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WO2004067852A1 - Water-intake apparatus and drainage apparatus - Google Patents

Water-intake apparatus and drainage apparatus Download PDF

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Publication number
WO2004067852A1
WO2004067852A1 PCT/JP2004/000854 JP2004000854W WO2004067852A1 WO 2004067852 A1 WO2004067852 A1 WO 2004067852A1 JP 2004000854 W JP2004000854 W JP 2004000854W WO 2004067852 A1 WO2004067852 A1 WO 2004067852A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
equipment installation
motor pump
submersible motor
installation tube
Prior art date
Application number
PCT/JP2004/000854
Other languages
French (fr)
Inventor
Akira Sasaki
Takanobu Oba
Kenichi Mori
Keiji Kato
Original Assignee
Ebara Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ebara Corporation filed Critical Ebara Corporation
Publication of WO2004067852A1 publication Critical patent/WO2004067852A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
    • E03B3/04—Methods or installations for obtaining or collecting drinking water or tap water from surface water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/043—Artificial seaweed

Definitions

  • the present invention relates to a water-intake apparatus and a drainage apparatus, andmore particularly to a water-intake apparatus which is suitable for taking in water from a river or the like in which water level is largely fluctuated and sand or the like tends to be accumulated, and a drainage apparatus which is suitable for draining water from a river or the like in which water level is largely fluctuated and sand or the like tends to be accumulated.
  • a material having a high hardness and a high abrasion resistance is used for components of a water-intake apparatus or a drainage apparatus which contact water, thereby preventing the components from being worn due to entering of sand or the like.
  • a crane installed on the civil engineering structure or a large-sized movable crane is used to hoist the water-intake apparatus such as a pump or other equipment and transfer suchwater-intake apparatus onto a certain place where maintenance of the water-intake apparatus is performed.
  • the present invention has been made in view of the above drawbacks. It is therefore an object of the present invention to provide an inexpensive water-intake apparatus and an inexpensive drainage apparatus which can be easily installed without requiring large-scale engineering work, can be protected from sediments such as sand, and can be maintained in a good operational condition with easy maintenance.
  • a water-intake apparatus comprising: an equipment installation tube having a lower end which is submerged in water; a submersible motor pump provided in the equipment installation tube; a suction pipe connected to a suction port of the submersible motor pump; a delivery pipe connected to a discharge port of the submersible motor pump and extending through the equipment installation tube to a predetermined location; and a floating apparatus for supporting a suction port of the suction pipe in the water.
  • a drainage apparatus comprising: an equipment installation tube having a lower end which is submerged in water; a submersible motor pump provided in the equipment installation tube; a suction pipe connected to a suction port of the submersible motor pump; a delivery pipe connected to a discharge port of the submersible motor pump and extending through the equipment installation tube to a predetermined location; and a floating apparatus for supporting a suction port of the suction pipe in the water.
  • the equipment installation tube is providedon an inclined surface.
  • the inclined surface may be an inclined surface of a bank of a river, and an inclined surface of a lake, a swamp or the like.
  • the equipment installation tube has an upper end positioned above a water surface.
  • the submersible motor pump since the submersible motor pump is installed in the equipment installation tube, and water is taken in through the suction pipe whose suction port is supported in the water by the floatation apparatus, sand does not enter the liquid contactingportion (components which contact water) of the pump section or the like of the submersible motor pump. Thus, erosion is not generated at the liquid contacting portion of the water-intake apparatus or the drainage apparatus, and the rotating member such as a pump impeller is not damaged or broken.
  • the water-intake apparatus or the drainage apparatus such as a submersible motor pump can be mainly composed of the equipment installation tube installed on the inclined surface, the suction pipe, and the floatation apparatus for supporting the suction port of the suction pipe in the water, it is not necessary to construct a large-scale civil engineering structure (structures) . Further, since sand or the like can hardly enter the water-intake apparatus or the drainage apparatus, it is not necessary to use an expensive material having a high abrasionresistance for the liquidcontactingportion (components which contactwater) of thewater-intake apparatus or the drainage apparatus. Thus, an ordinarywater-intake apparatus or drainage apparatus which is inexpensive can be used.
  • the water-intake apparatus or the drainage apparatus further comprises a traction mechanism for moving the submersible motor pump up and down along an inclined surface of the equipment installation tube.
  • a traction mechanism for moving the submersible motor pump up and down along an inclined surface of the equipment installation tube.
  • a discharge port of the suction pipe is fixed to the lower end of the equipment installation tube, and when the submersible motor pump is moved to the lower end of the equipment installation tube along the inclined surface of the equipment installation tube, the suction port of the submersible motor pump is automatically connected to the discharge port of the suction pipe.
  • the suction port of the submersible motor pump is automatically coupled to the discharge port of the suction pipe. Therefore, installationwork of the submersiblemotorpump is extremely facilitated.
  • the submersible motor pump has wheels so that the center of the suction port of the submersible motor pump is aligned with the center of the equipment installation tube.
  • the submersible motor pump because the submersible motor pump has wheels so that the center of the suction port of the submersible motor pump is aligned with the center of the equipment installation tube, the submersible motor pump is moved downwardly along the inner wall surface of the equipment installation tube so that the center of the suction port of the submersible motor pump is aligned with the center of the equipment installation tube at all times.
  • the position of the center of the suction port of the submersible motor pump is always constant, and hence the center of the suction port of the submersible motor pump is aligned with the center of the suction pipe, and the suction port of the submersible motor pump is connected to the discharge port of the suction pipe.
  • the suction port of the suction pipe is open in the water near the water surface.
  • the suction pipe is supported in such a manner that the suction port of the suction pipe is open in the water near the water surface, and water near the water surface hardly includes sand or the like
  • the water which is taken in from the suction port hardly includes sand or the like or includes a trace amount of sand or the like, and hence the amount of sand or the like which enters the pump section of the submersible motor pump is minimized.
  • FIG. 1 is a schematic view of an overall arrangement of awater-intake apparatus according to an embodiment of thepresent invention
  • FIGS .2Aand 2B are views showing a lowerpart of an equipment installation tube in the water-intake apparatus according to the embodiment of the present invention, and FIG. 2A is a cross-sectional view of the equipment installation tube and FIG.
  • FIG. 2B is a cross-sectional view taken along line II-II of FIG. 2A;
  • FIG. 3 is a schematic view showing a traction mechanism of the water-intake apparatus according to the embodiment of the present invention.
  • FIG. 4 is a schematic view showing the state in which a submersible motor pump of the water-intake apparatus according to the present invention is transferred to the maintenance place;
  • FIG. 5 is a perspective view of a guide rail of the water-intake apparatus according to the present invention. Best Mode for Carrying Out the Invention
  • FIG. 1 is a schematic view showing an overall arrangement of a water-intake apparatus according to an embodiment of the present invention.
  • equipment installation tube 13 which is made of steel or the like is provided on an inclined surface
  • a suction pipe 14 having a flexibility is fixed to the lower end of the equipment installation tube 13, and a suction port section 14b having a suction port therein of the suction pipe
  • floatation apparatus 15 is supported in a submerged state near a water surface 16 by a floatation apparatus 15.
  • a submersible motor pump 30 is provided in the lower part of the equipment installation tube 13, and a suction port section
  • a delivery pipe 33 is connected to a discharge port section 32 having a discharge port therein of the submersible motor pump 30, and the delivery pipe 33 extends through the equipment installation tube 13 and the top portion of the bank 11 to a predetermined location where water supply is required.
  • the submersible motor pump 30 has wheels 34 so that the submersible motor pump 30 can move up and down in the equipment installation tube 13 along the inclined surface of the equipment installation tube 13 by a traction mechanism (described later on) .
  • FIGS. 2A and 2B are views showing the lower part of the equipment installation tube
  • FIG. 2A is a cross-sectional view showing the lower part of the equipment installation tube
  • FIG. 2B is a cross-sectional view taken along line II-II of FIG. 2A.
  • the suction pipe 14 has a discharge port section having a discharge port therein which is fixedthrough a flange 14c to the lower endof the equipment installation tube 13.
  • an elastic packing (gasket) 17 is providedon an inner surface 13a of the lower endof the equipment installation tube 13.
  • the submersible motor pump 30 is moved downwardly as shown by the arrow B while it is in traction by the traction mechanism
  • the suction port section 31 of the submersible motor pump 30 is brought into contact with the elastic packing 17 through a flange 31a of the suction port section 31, and hence the suction port section 31 of the submersible motor pump 30 is connectedto the suctionpipe 14. While the submersible motor pump 30 is in operation, the submersible motor pump 30 is strongly pressed against the lower end of the equipment installation tube 13 due to a pressing force produced by a pumping action forpumpingwater throughthe deliverypipe 33. Therefore, the flange 31a of the suction port section 31 is brought into intimate contact with the elastic packing 17 to maintain liquid-tightness .
  • the equipment installation tube 13 is cylindrical, and the submersible motor pump 30 is moved downwardly by the wheels 34 along the inner wall surface of the equipment installation tube 13 in such a state that the center of the suction port section 31 is aligned with the center of the equipment installation tube 13 at all times. Therefore, the position of the center of the suctionport section 31 having the suctionport is always constant, and hence the center of the suction port section 31 is aligned with the center of the suction pipe 14 attached to the equipment installation tube 13. The center of the suctionpipe 14 is aligned with the center of the equipment installation tube 13. Further, a guide means such as a guide rail for guiding the wheels 34 of the submersible motor pump 30 may be provided in the equipment installation tube 13.
  • FIG. 3 is a schematic view showing the traction mechanism for moving the submersible motor pump 30 up and down along the inclined surface (inner wall surface) of the equipment installation tube 13.
  • One end of a rope 35 is fixed to the submersible motor pump 30, and the rope 35 extends via a guide pulley 36 provided on the top portion of the bank 11 toward a winch 37, and the other end of the rope 35 is fixed to the winch 37. Therefore, the rope 35 is wound or unwound by the winch 37.
  • the submersible motor pump 30 is moved upwardly by winding the rope 35 with the winch 37, and is moved downwardly by unwinding the rope 35 with the winch 37.
  • the guide rail 38 for guiding the wheels 34 of the submersible motor pump 30 is disposed adjacent to an entrance 13b of the equipment installation tube 13 so that the submersible motor pump 30 is guided when the submersible motor pump 30 enters the equipment installation tube 13 or goes out of the equipment installation tube 13.
  • the guide rail 38 extends to the location near the guide pulley 36.
  • the guide rail 38 comprises a base plate 38a and two guide plates 38b which are provided perpendicularly on the base plate 38a and extend in parallel to each other at a predetermined interval (interval which can accommodate a pair of parallel wheels 34 of the submersible motor pump 30) .
  • the wheels 34 of the submersible motor pump 30 are positioned between the two guide plates 38b, and thus the submersible motor pump 30 is guided when the submersible motor pump 30 enters the equipment installation tube 13 or goes out of the equipment installation tube 13.
  • the guide plate 38b of the guide rail 38 has an L-shaped cross section
  • the guide plate 38b may comprise a pipe having a cylindrical cross section or an elongate member having a triangular cross section.
  • the winch 37 When maintenance of the submersible motor pump 30 is performed, the winch 37 is driven, and the submersible motor pump 30 is pulledup alongthe inclinedsurface (innerwall surface) of the equipment installation tube 13.
  • the guide rail 38 As shown in FIG. 4, the guide rail 38 having the above structure shown in FIG.5 is disposed at the maintenance place. Therefore, as the submersible motor pump 30 is guided by the guide rail 38, the submersible motor pump 30 is transferred to the maintenance place. After maintenance of the submersible motor pump 30 is completed, the submersible motor pump 30 is transferred by unwinding the rope 35 with the winch 37 to the location near the entrance 13b of the equipment installation tube 13, and then the submersible motor pump 30 is introduced into the equipment installation tube 13 through the entrance 13b by the guide rail 38.
  • the submersible motor pump 30 is installed in the equipment installation tube 13 provided on the inclined surface of the bank 11, the submersible motor pump 30 can be completely protected from sand of the river 10.
  • the discharge port section having the discharge port therein of the suction pipe 14 is attached to the lower end of the equipment installation tube 13, and the suction port section 14b having the suction port therein of the suction pipe 14 is supported in a submerged state near the water surface 16 by the floatation apparatus 15. Because sand is not included in the water near the water surface 16, sand of the river hardly enters the equipment installation tube 13. Therefore, sand or the like can hardly enter the pump section of the submersible motor pump 30, and hence an ordinary submersible motor pump which does not use a material having a high abrasion resistance can be employed.
  • the water-intake apparatus can be mainly composed of the equipment installation tube 13 provided on the inclined surface of the bank 11 at the water-intake location of the river 10, the suction pipe 14, the floatation apparatus 15 for floating the suction port section 14b of the suction pipe 14 in the water, the traction mechanism having the winch 37, the pulley 36 and the like, and some attachments, it is not necessary to construct a large-scale civil engineering structure (structures) .
  • the submersible motor pump 30 can be easily pulled up on the ground by the winch 37 of the traction mechanism when maintenance of the submersible motor pump 30 is performed, maintenance work is extremely facilitated and large-sized equipment such as a crane is not required for the maintenance work. Thus, it is not necessary to secure a large site for installing the water-intake apparatus.
  • a facility constituting the water-intake apparatus which is installed on the inclined surface of the bank of the river has been described in the above embodiment, the installation place of the water-intake apparatus is not limited to the river.
  • a facility constituting the water-intake apparatus may be installed on an inclined surface of a bank, a shore, or the like of a channel, a lake, a swamp, or the like.
  • the present invention is applicable to a drainage apparatus for draining water from a river, a lake, a swamp, or the like.
  • the submersible motor pump since the submersible motor pump is installed in the equipment installation tube, and water is taken in through the suction pipe whose suction port is supported in the water by the floatation apparatus, sand does not enter the liquid contacting ortion (components which contact water) of the pump section or the like of the submersible motor pump. Thus, erosion is not generated at the liquid contacting portion of the water-intake apparatus or the drainage apparatus, and the rotating member such as a pump impeller is not damaged or broken. Further, even if the equipment installation tube is buried in sand due to sedimentation of a large amount of sand, the submersible motor pump can be kept in a safe and stable condition.
  • the water-intake apparatus or the drainage apparatus such as a submersible motor pump can be mainly composed of the equipment installation tube installed on the inclined surface, the suction pipe, and the floatation apparatus for supporting the suction port of the suction pipe in the water, it is not necessary to construct a large-scale civil engineering structure (structures). Therefore, the water-intake apparatus or the drainage apparatus becomes inexpensive and can be easily installed.
  • the submersible motor pump can be moved up and down along the inclined surface in the equipment installation tube by the traction mechanism, the submersible motor pump can be easily moved to the maintenance location on the ground when maintenance of the submersible motor pump is performed, and hence maintenance work is extremely facilitated. Therefore, large-sized equipment such as a crane is not required for maintenance work, and it is not necessary to construct the civil engineering structure (structures) and to secure a large site for the civil engineering structure.
  • the suction port of the submersible motor pump is automatically coupled to the discharge port of the suction pipe. Therefore, installationwork of the submersiblemotorpump is extremely facilitated. Particularly, after maintenance of the submersible motor pump is performed, reinstallation work of the submersible motor pump can be easily performed.
  • the submersible motor pump has wheels so that the center of the suction port of the submersible motor pump is aligned with the center of the equipment installation tube, the submersible motor pump is moved downwardly along the inner wall surface of the equipment installation tube so that the center of the suction port of the submersible motor pump is alignedwith the center of the equipment installation tube at all times. Therefore, the position of the center of the suction port of the submersible motor pump is always constant, and hence the center of the suction port of the submersible motor pump is aligned with the center of the suction pipe, and the suction port of the submersible motor pump is connected to the discharge port of the suction pipe.
  • the suction pipe is supported in such a manner that the suction port of the suction pipe is open in the water near the water surface, and water near the water surface hardly includes sand or the like
  • the water which is taken in from the suction port hardly includes sand or the like or includes a trace amount of sand or the like, and hence the amount of sand or the like which enters the pump section of the submersible motor pump is minimized.
  • the present invention is applicable to a water-intake apparatus or a drainage apparatus which is suitable for taking water in from a river or the like in which water level is largely fluctuated and sand or the like tends to be accumulated.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A water-intake apparatus is used for taking water in from a river or the like. The water-intake apparatus includes an equipment installation tube (13) having a lower end submerged in water and an upper end positioned above a water surface, a submersible motor pump (30) provided in the equipment installation tube (13), a suction pipe (14) connected to a suction port of the submersible motor pump (30), and a delivery pipe (33) connected to a discharge port (32) of the submersible motor pump (30) and extending through the equipment installation tube (13) to a predetermined location. The water-intake apparatus further includes a floating apparatus for supporting a suction port of the suction pipe (14) in the water

Description

DESCRIPTION
WATER-INTAKE APPARATUS AND DRAINAGE APPARATUS
Technical Field The present invention relates to a water-intake apparatus and a drainage apparatus, andmore particularly to a water-intake apparatus which is suitable for taking in water from a river or the like in which water level is largely fluctuated and sand or the like tends to be accumulated, and a drainage apparatus which is suitable for draining water from a river or the like in which water level is largely fluctuated and sand or the like tends to be accumulated.
Background Art Conventionally, when water is taken in from a river or the like in which water level is largely fluctuated and a large amount of sediment such as sand is present, in many cases, a civil engineering structure (structures) is constructed and a water-intake apparatus such as a vertical pump is installed on the civil engineering structure. Further, in order to protect a water-intake apparatus or a drainage apparatus such as a pump from sand or the like, a water passage is provided from a water-intake position of a river or the like, and sand or the like is prevented from entering the water-intake apparatus or the drainage apparatus by the civil engineering structure. Alternatively, a material having a high hardness and a high abrasion resistance is used for components of a water-intake apparatus or a drainage apparatus which contact water, thereby preventing the components from being worn due to entering of sand or the like. Further, when maintenance of a water-intake apparatus such as a pump is performed, a crane installed on the civil engineering structure or a large-sized movable crane is used to hoist the water-intake apparatus such as a pump or other equipment and transfer suchwater-intake apparatus onto a certain place where maintenance of the water-intake apparatus is performed.
However, in a case where a civil engineering structure (structures) is constructed in advance and a water-intake apparatus such as a vertical pump is installed, or in a case where a water passage is provided from a water-intake position of a river and sand or the like is prevented from entering a water-intake apparatus by a civil engineering structure (structures), or in a case where a crane installed on a civil engineering structure or a large capacity mobile crane is used for maintenance of a water-intake apparatus, it is necessary toprovide a large-scale civil engineering structure (structures) and a large capacity mobile crane, and hence a large construction cost and a construction site are required. Further, in order to remove the accumulated sand, a large restoration cost is required.
Further, it is necessary not only to use equipment such as a crane for maintenance work but also to perform difficult work including hoisting of the water-intake apparatus such as a pump and reinstallation of the water-intake apparatus after its maintenance. Further, erosion is generated by a large quantity of sand which has entered the pump, and a rotating member such as a pump impeller is damaged. Furthermore, in a case where a material having a high hardness and a high abrasion resistance is used for components of a water-intake apparatus which contact water, water-intake equipment such as a pump becomes expensive, and hence the overall water-intake apparatus becomes expensive.
Disclosure of Invention
The present invention has been made in view of the above drawbacks. It is therefore an object of the present invention to provide an inexpensive water-intake apparatus and an inexpensive drainage apparatus which can be easily installed without requiring large-scale engineering work, can be protected from sediments such as sand, and can be maintained in a good operational condition with easy maintenance. In order to achieve the above object, according to the present invention, there is provided a water-intake apparatus comprising: an equipment installation tube having a lower end which is submerged in water; a submersible motor pump provided in the equipment installation tube; a suction pipe connected to a suction port of the submersible motor pump; a delivery pipe connected to a discharge port of the submersible motor pump and extending through the equipment installation tube to a predetermined location; and a floating apparatus for supporting a suction port of the suction pipe in the water. According to the present invention, there is provided a drainage apparatus comprising: an equipment installation tube having a lower end which is submerged in water; a submersible motor pump provided in the equipment installation tube; a suction pipe connected to a suction port of the submersible motor pump; a delivery pipe connected to a discharge port of the submersible motor pump and extending through the equipment installation tube to a predetermined location; and a floating apparatus for supporting a suction port of the suction pipe in the water.
According to a preferred aspect of the present invention, the equipment installation tube is providedon an inclined surface.
The inclined surface may be an inclined surface of a bank of a river, and an inclined surface of a lake, a swamp or the like.
According to a preferred aspect of the present invention, the equipment installation tube has an upper end positioned above a water surface.
According to the present invention, since the submersible motor pump is installed in the equipment installation tube, and water is taken in through the suction pipe whose suction port is supported in the water by the floatation apparatus, sand does not enter the liquid contactingportion (components which contact water) of the pump section or the like of the submersible motor pump. Thus, erosion is not generated at the liquid contacting portion of the water-intake apparatus or the drainage apparatus, and the rotating member such as a pump impeller is not damaged or broken. Further, since the water-intake apparatus or the drainage apparatus such as a submersible motor pump can be mainly composed of the equipment installation tube installed on the inclined surface, the suction pipe, and the floatation apparatus for supporting the suction port of the suction pipe in the water, it is not necessary to construct a large-scale civil engineering structure (structures) . Further, since sand or the like can hardly enter the water-intake apparatus or the drainage apparatus, it is not necessary to use an expensive material having a high abrasionresistance for the liquidcontactingportion (components which contactwater) of thewater-intake apparatus or the drainage apparatus. Thus, an ordinarywater-intake apparatus or drainage apparatus which is inexpensive can be used. According to a preferred aspect of the present invention, the water-intake apparatus or the drainage apparatus further comprises a traction mechanism for moving the submersible motor pump up and down along an inclined surface of the equipment installation tube. According to the present invention, since the submersible motor pump can be moved up and down along the inclined surface in the equipment installation tube by the traction mechanism, the submersible motor pump can be easily moved to the maintenance location on the ground when maintenance of the submersible motor pump is performed, and hence maintenance work is extremely facilitated. Therefore, large-sized equipment such as a crane is not required for maintenance work, and it is not necessary to construct the civil engineering structure (structures) and to secure a large site for the civil engineering structure. According to a preferred aspect of the present invention, a discharge port of the suction pipe is fixed to the lower end of the equipment installation tube, and when the submersible motor pump is moved to the lower end of the equipment installation tube along the inclined surface of the equipment installation tube, the suction port of the submersible motor pump is automatically connected to the discharge port of the suction pipe. According to the present invention, when the submersible motor pump is moved downwardly to the lower end of the equipment installation tube, the suction port of the submersible motor pump is automatically coupled to the discharge port of the suction pipe. Therefore, installationwork of the submersiblemotorpump is extremely facilitated.
According to a preferred aspect of the present invention, the submersible motor pump has wheels so that the center of the suction port of the submersible motor pump is aligned with the center of the equipment installation tube. According to thepresent invention, because the submersible motor pump has wheels so that the center of the suction port of the submersible motor pump is aligned with the center of the equipment installation tube, the submersible motor pump is moved downwardly along the inner wall surface of the equipment installation tube so that the center of the suction port of the submersible motor pump is aligned with the center of the equipment installation tube at all times. Therefore, the position of the center of the suction port of the submersible motor pump is always constant, and hence the center of the suction port of the submersible motor pump is aligned with the center of the suction pipe, and the suction port of the submersible motor pump is connected to the discharge port of the suction pipe.
According to a preferred aspect of the present invention, the suction port of the suction pipe is open in the water near the water surface.
According to the present invention, because the suction pipe is supported in such a manner that the suction port of the suction pipe is open in the water near the water surface, and water near the water surface hardly includes sand or the like
(solid substance having a larger specific gravity than water or a smaller specific gravity than water) or includes a trace amount of sand or the like, the water which is taken in from the suction port hardly includes sand or the like or includes a trace amount of sand or the like, and hence the amount of sand or the like which enters the pump section of the submersible motor pump is minimized.
Brief Description of Drawings
FIG. 1 is a schematic view of an overall arrangement of awater-intake apparatus according to an embodiment of thepresent invention;
FIGS .2Aand 2B are views showing a lowerpart of an equipment installation tube in the water-intake apparatus according to the embodiment of the present invention, and FIG. 2A is a cross-sectional view of the equipment installation tube and FIG.
2B is a cross-sectional view taken along line II-II of FIG. 2A;
FIG. 3 is a schematic view showing a traction mechanism of the water-intake apparatus according to the embodiment of the present invention;
FIG. 4 is a schematic view showing the state in which a submersible motor pump of the water-intake apparatus according to the present invention is transferred to the maintenance place; and
FIG. 5 is a perspective view of a guide rail of the water-intake apparatus according to the present invention. Best Mode for Carrying Out the Invention
A water-intake apparatus according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view showing an overall arrangement of a water-intake apparatus according to an embodiment of the present invention.
As shown in FIG. 1, a tube 13 for installing equipment
(hereinafter referred to as equipment installation tube 13) which is made of steel or the like is provided on an inclined surface
12 of a bank 11 of a river 10. The equipment installation tube
13 is cylindrical, and has a lower end submerged in the water and an upper end extending to the top of the bank 11 or its vicinity. A suction pipe 14 having a flexibility is fixed to the lower end of the equipment installation tube 13, and a suction port section 14b having a suction port therein of the suction pipe
14 is supported in a submerged state near a water surface 16 by a floatation apparatus 15.
A submersible motor pump 30 is provided in the lower part of the equipment installation tube 13, and a suction port section
31 having a suction port therein of the submersible motor pump
30 is connected to the suction pipe 14. A delivery pipe 33 is connected to a discharge port section 32 having a discharge port therein of the submersible motor pump 30, and the delivery pipe 33 extends through the equipment installation tube 13 and the top portion of the bank 11 to a predetermined location where water supply is required. The submersible motor pump 30 has wheels 34 so that the submersible motor pump 30 can move up and down in the equipment installation tube 13 along the inclined surface of the equipment installation tube 13 by a traction mechanism (described later on) .
FIGS. 2A and 2B are views showing the lower part of the equipment installation tube, and FIG. 2A is a cross-sectional view showing the lower part of the equipment installation tube and FIG. 2B is a cross-sectional view taken along line II-II of FIG. 2A. As shown in FIGS. 2A and 2B, the suction pipe 14 has a discharge port section having a discharge port therein which is fixedthrough a flange 14c to the lower endof the equipment installation tube 13. Further, an elastic packing (gasket) 17 is providedon an inner surface 13a of the lower endof the equipment installation tube 13.
The submersible motor pump 30 is moved downwardly as shown by the arrow B while it is in traction by the traction mechanism
(described later on) , and the suction port section 31 of the submersible motor pump 30 is brought into contact with the elastic packing 17 through a flange 31a of the suction port section 31, and hence the suction port section 31 of the submersible motor pump 30 is connectedto the suctionpipe 14. While the submersible motor pump 30 is in operation, the submersible motor pump 30 is strongly pressed against the lower end of the equipment installation tube 13 due to a pressing force produced by a pumping action forpumpingwater throughthe deliverypipe 33. Therefore, the flange 31a of the suction port section 31 is brought into intimate contact with the elastic packing 17 to maintain liquid-tightness .
The equipment installation tube 13 is cylindrical, and the submersible motor pump 30 is moved downwardly by the wheels 34 along the inner wall surface of the equipment installation tube 13 in such a state that the center of the suction port section 31 is aligned with the center of the equipment installation tube 13 at all times. Therefore, the position of the center of the suctionport section 31 having the suctionport is always constant, and hence the center of the suction port section 31 is aligned with the center of the suction pipe 14 attached to the equipment installation tube 13. The center of the suctionpipe 14 is aligned with the center of the equipment installation tube 13. Further, a guide means such as a guide rail for guiding the wheels 34 of the submersible motor pump 30 may be provided in the equipment installation tube 13.
FIG. 3 is a schematic view showing the traction mechanism for moving the submersible motor pump 30 up and down along the inclined surface (inner wall surface) of the equipment installation tube 13. One end of a rope 35 is fixed to the submersible motor pump 30, and the rope 35 extends via a guide pulley 36 provided on the top portion of the bank 11 toward a winch 37, and the other end of the rope 35 is fixed to the winch 37. Therefore, the rope 35 is wound or unwound by the winch 37. Specifically, the submersible motor pump 30 is moved upwardly by winding the rope 35 with the winch 37, and is moved downwardly by unwinding the rope 35 with the winch 37. As shown in FIG.3, the guide rail 38 for guiding the wheels 34 of the submersible motor pump 30 is disposed adjacent to an entrance 13b of the equipment installation tube 13 so that the submersible motor pump 30 is guided when the submersible motor pump 30 enters the equipment installation tube 13 or goes out of the equipment installation tube 13. The guide rail 38 extends to the location near the guide pulley 36. As shown in FIG. 5, the guide rail 38 comprises a base plate 38a and two guide plates 38b which are provided perpendicularly on the base plate 38a and extend in parallel to each other at a predetermined interval (interval which can accommodate a pair of parallel wheels 34 of the submersible motor pump 30) . The wheels 34 of the submersible motor pump 30 are positioned between the two guide plates 38b, and thus the submersible motor pump 30 is guided when the submersible motor pump 30 enters the equipment installation tube 13 or goes out of the equipment installation tube 13. Although the guide plate 38b of the guide rail 38 has an L-shaped cross section, the guide plate 38b may comprise a pipe having a cylindrical cross section or an elongate member having a triangular cross section.
When maintenance of the submersible motor pump 30 is performed, the winch 37 is driven, and the submersible motor pump 30 is pulledup alongthe inclinedsurface (innerwall surface) of the equipment installation tube 13. As shown in FIG. 4, the guide rail 38 having the above structure shown in FIG.5 is disposed at the maintenance place. Therefore, as the submersible motor pump 30 is guided by the guide rail 38, the submersible motor pump 30 is transferred to the maintenance place. After maintenance of the submersible motor pump 30 is completed, the submersible motor pump 30 is transferred by unwinding the rope 35 with the winch 37 to the location near the entrance 13b of the equipment installation tube 13, and then the submersible motor pump 30 is introduced into the equipment installation tube 13 through the entrance 13b by the guide rail 38. Thereafter, the rope 35 is further unwound by the winch 37 to move the submersible motor pump 30 downwardly, and the suction port section 31 having the suctionport therein of the submersible motor pump 30 is automatically connected to the discharge port section having the discharge port therein of the suction pipe 14 at the lower end of the equipment installation tube 13.
Because the submersible motor pump 30 is installed in the equipment installation tube 13 provided on the inclined surface of the bank 11, the submersible motor pump 30 can be completely protected from sand of the river 10. Specifically, the discharge port section having the discharge port therein of the suction pipe 14 is attached to the lower end of the equipment installation tube 13, and the suction port section 14b having the suction port therein of the suction pipe 14 is supported in a submerged state near the water surface 16 by the floatation apparatus 15. Because sand is not included in the water near the water surface 16, sand of the river hardly enters the equipment installation tube 13. Therefore, sand or the like can hardly enter the pump section of the submersible motor pump 30, and hence an ordinary submersible motor pump which does not use a material having a high abrasion resistance can be employed.
Further, since the water-intake apparatus can be mainly composed of the equipment installation tube 13 provided on the inclined surface of the bank 11 at the water-intake location of the river 10, the suction pipe 14, the floatation apparatus 15 for floating the suction port section 14b of the suction pipe 14 in the water, the traction mechanism having the winch 37, the pulley 36 and the like, and some attachments, it is not necessary to construct a large-scale civil engineering structure (structures) .
Further, since the submersible motor pump 30 can be easily pulled up on the ground by the winch 37 of the traction mechanism when maintenance of the submersible motor pump 30 is performed, maintenance work is extremely facilitated and large-sized equipment such as a crane is not required for the maintenance work. Thus, it is not necessary to secure a large site for installing the water-intake apparatus. Although a facility constituting the water-intake apparatus which is installed on the inclined surface of the bank of the river has been described in the above embodiment, the installation place of the water-intake apparatus is not limited to the river. For example, a facility constituting the water-intake apparatus may be installed on an inclined surface of a bank, a shore, or the like of a channel, a lake, a swamp, or the like. Further, although the embodiment in which the present invention is applied to the water-intake apparatus has been described, the present invention is applicable to a drainage apparatus for draining water from a river, a lake, a swamp, or the like.
According to the present invention, the following advantages can be offered: According to the present invention, since the submersible motor pump is installed in the equipment installation tube, and water is taken in through the suction pipe whose suction port is supported in the water by the floatation apparatus, sand does not enter the liquid contacting ortion (components which contact water) of the pump section or the like of the submersible motor pump. Thus, erosion is not generated at the liquid contacting portion of the water-intake apparatus or the drainage apparatus, and the rotating member such as a pump impeller is not damaged or broken. Further, even if the equipment installation tube is buried in sand due to sedimentation of a large amount of sand, the submersible motor pump can be kept in a safe and stable condition.
Further, since the water-intake apparatus or the drainage apparatus such as a submersible motor pump can be mainly composed of the equipment installation tube installed on the inclined surface, the suction pipe, and the floatation apparatus for supporting the suction port of the suction pipe in the water, it is not necessary to construct a large-scale civil engineering structure (structures). Therefore, the water-intake apparatus or the drainage apparatus becomes inexpensive and can be easily installed.
Further, since sand or the like can hardly enter the water-intake apparatus or the drainage apparatus, it is not necessary to use an expensive material having a high abrasion resistance for the liquid contacting portion (components which contact water) of the water-intake apparatus or the drainage apparatus . Thus, an ordinarywater-intake apparatus or drainage apparatus such as a submersible motor pump which is inexpensive can be used.
According to the present invention, since the submersible motor pump can be moved up and down along the inclined surface in the equipment installation tube by the traction mechanism, the submersible motor pump can be easily moved to the maintenance location on the ground when maintenance of the submersible motor pump is performed, and hence maintenance work is extremely facilitated. Therefore, large-sized equipment such as a crane is not required for maintenance work, and it is not necessary to construct the civil engineering structure (structures) and to secure a large site for the civil engineering structure.
According to the present invention, when the submersible motor pump is moved downwardly to the lower end of the equipment installation tube, the suction port of the submersible motor pump is automatically coupled to the discharge port of the suction pipe. Therefore, installationwork of the submersiblemotorpump is extremely facilitated. Particularly, after maintenance of the submersible motor pump is performed, reinstallation work of the submersible motor pump can be easily performed.
Accordingto thepresent invention, because the submersible motor pump has wheels so that the center of the suction port of the submersible motor pump is aligned with the center of the equipment installation tube, the submersible motor pump is moved downwardly along the inner wall surface of the equipment installation tube so that the center of the suction port of the submersible motor pump is alignedwith the center of the equipment installation tube at all times. Therefore, the position of the center of the suction port of the submersible motor pump is always constant, and hence the center of the suction port of the submersible motor pump is aligned with the center of the suction pipe, and the suction port of the submersible motor pump is connected to the discharge port of the suction pipe.
According to the present invention, because the suction pipe is supported in such a manner that the suction port of the suction pipe is open in the water near the water surface, and water near the water surface hardly includes sand or the like
(solid substance having a larger specific gravity than water or a smaller specific gravity than water) or includes a trace amount of sand or the like, the water which is taken in from the suction port hardly includes sand or the like or includes a trace amount of sand or the like, and hence the amount of sand or the like which enters the pump section of the submersible motor pump is minimized.
Industrial Applicability
The present invention is applicable to a water-intake apparatus or a drainage apparatus which is suitable for taking water in from a river or the like in which water level is largely fluctuated and sand or the like tends to be accumulated.

Claims

1. A water-intake apparatus comprising: an equipment installation tube having a lower end which is submerged in water; a submersible motor pump provided in said equipment installation tube; a suction pipe connected to a suction port of said submersible motor pump; a delivery pipe connected to a discharge port of said submersible motor pump and extending through said equipment installation tube to a predetermined location; and a floating apparatus for supporting a suction port of said suction pipe in the water.
2. A water-intake apparatus according to claim 1, wherein said equipment installation tube is provided on an inclined surface.
3. A water-intake apparatus according to claim 1, wherein said equipment installation tube has an upper end positioned above a water surface.
4. A water-intake apparatus according to claim 1, further comprising: a traction mechanism for moving said submersible motor pump up and down along an inclined surface of said equipment installation tube.
5. Awater-intake apparatus according to claim 4, wherein a discharge port of said suction pipe is fixed to the lower end of said equipment installation tube, and when said submersible motorpump is moved to the lower end of said equipment installation tube along said inclined surface of said equipment installation tube, said suction port of said submersible motor pump is automatically connected to said discharge port of said suction pipe, j
6. A water-intake apparatus according to claim 1, wherein said submersible motor pump has wheels so that the center of said suction port of said submersible motor pump is aligned with the center of said equipment installation tube.
7. A water-intake apparatus according to any one of claims 1 to 6, wherein said suction port of said suction pipe is open in the water near the water surface.
8. A drainage apparatus comprising: an equipment installation tube having a lower end which is submerged in water; a submersible motor pump provided in said equipment installation tube; a suction pipe connected to a suction port of said submersible motor pump; a delivery pipe connected to a discharge port of said submersible motor pump and extending through said equipment installation tube to a predetermined location; and a floating apparatus for supporting a suction port of said suction pipe in the water.
9. A drainage apparatus according to claim 8, wherein said equipment installation tube is provided on an inclined surface.
10. A drainage apparatus according to claim 8, wherein said equipment installation tube has an upper end positioned above a water surface.
11. A drainage apparatus according to claim 8, further comprising: a traction mechanism for moving said submersible motor pump up and down along an inclined surface of said equipment installation tube.
12. A drainage apparatus according to claim 11, wherein a discharge port of said suction pipe is fixed to the lower end of said equipment installation tube, and when said submersible motorpump is moved to the lower end of said equipment installation tube along said inclined surface of said equipment installation tube, said suction port of said submersible motor pump is automatically connected to said discharge port of said suction pipe.
13. A drainage apparatus according to claim 8, wherein said submersible motor pump has wheels so that the center of said suction port of said submersible motor pump is aligned with the center of said equipment installation tube.
14. A drainage apparatus according to any one of claims 8 to 13, wherein said suction port of said suction pipe is open in the water near the water surface.
PCT/JP2004/000854 2003-01-31 2004-01-29 Water-intake apparatus and drainage apparatus WO2004067852A1 (en)

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JP2003-023758 2003-01-31
JP2003023758A JP3863114B2 (en) 2003-01-31 2003-01-31 Water intake or drainage device

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CN102561454A (en) * 2010-12-30 2012-07-11 上海市基础工程有限公司 Water intake method utilizing pipe jacking vertically
CN102678579A (en) * 2012-05-31 2012-09-19 泰州泰丰泵业有限公司 Anti-sand submersible electric pump
WO2013082662A1 (en) * 2011-12-08 2013-06-13 Weir Minerals Australia Ltd Pump apparatus
RU2507659C2 (en) * 2011-05-31 2014-02-20 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Белгородский государственный национальный исследовательский университет" System of energy supply of water-intake wells of coastal water intake
CN104652578A (en) * 2015-02-02 2015-05-27 化工部长沙设计研究院 Assembled tailing water siphon water return device
CN110905045A (en) * 2019-11-24 2020-03-24 杭州奕树科技有限公司 Outdoor water liquid drawing equipment
CN119221563A (en) * 2024-09-25 2024-12-31 中铁四局集团有限公司 An underwater precise positioning system for water intake head

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CN102561454B (en) * 2010-12-30 2014-02-12 上海市基础工程集团有限公司 Water intake method utilizing pipe jacking vertically
CN102561454A (en) * 2010-12-30 2012-07-11 上海市基础工程有限公司 Water intake method utilizing pipe jacking vertically
RU2507659C2 (en) * 2011-05-31 2014-02-20 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Белгородский государственный национальный исследовательский университет" System of energy supply of water-intake wells of coastal water intake
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CN102678579A (en) * 2012-05-31 2012-09-19 泰州泰丰泵业有限公司 Anti-sand submersible electric pump
CN104652578A (en) * 2015-02-02 2015-05-27 化工部长沙设计研究院 Assembled tailing water siphon water return device
CN110905045A (en) * 2019-11-24 2020-03-24 杭州奕树科技有限公司 Outdoor water liquid drawing equipment
CN110905045B (en) * 2019-11-24 2021-03-09 左晓武 Outdoor water liquid drawing equipment
CN119221563A (en) * 2024-09-25 2024-12-31 中铁四局集团有限公司 An underwater precise positioning system for water intake head

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