+

WO1983001660A1 - Systeme de pompe destine a etre place a des endroits presentant un danger d'explosion a bord d'un bateau citerne - Google Patents

Systeme de pompe destine a etre place a des endroits presentant un danger d'explosion a bord d'un bateau citerne Download PDF

Info

Publication number
WO1983001660A1
WO1983001660A1 PCT/NO1982/000056 NO8200056W WO8301660A1 WO 1983001660 A1 WO1983001660 A1 WO 1983001660A1 NO 8200056 W NO8200056 W NO 8200056W WO 8301660 A1 WO8301660 A1 WO 8301660A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
motor
conduit
housing
pressure
Prior art date
Application number
PCT/NO1982/000056
Other languages
English (en)
Inventor
And Developments A/S Patents
Original Assignee
Stephansen, Roald, A.
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 Stephansen, Roald, A. filed Critical Stephansen, Roald, A.
Publication of WO1983001660A1 publication Critical patent/WO1983001660A1/fr

Links

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
    • F04D13/00—Pumping installations or systems
    • F04D13/12—Combinations of two or more pumps

Definitions

  • the present invention relates to a pump system for placing in explosively dangerous regions on board a tanker comprising two tandem pumps, of which a first pump which is submerged in the cargo in a freight tank, is driven by a hydraulic motor via a short shaft which passes through a pressure medium-controlled drainage chamber, while a second pump which is freely disposed in the explosively dangerous region is driven by an electric motor via a short shaft which passes through a pressure medium-controlled drainage chamber which motor is provided with a surrounding housing through which fluid flows.
  • explosively dangerous region is to be understood in particular deck areas of the tanker above cargo tanks of the ship. However, there will also be a corresponding explosively dangerous region in the so-called pump rooms in such instances where the second pump is placed in such a room.
  • the said first pump which is submerged in the cargo and which is driven by a hydraulic motor, is preferably of that construction which is illustrated and described in Norwegian Patent Specficiation No. 123,115.
  • the said first pump of the preferred construction is specially protected against admixture of cargo medium in the drive medium of the pump and against admixture of drive medium in the cargo medium respectively, controlled via the pressure medium- controlled drainage chamber together with a coopera ⁇ ting pressure medium-controlled "cofferdam" or shield chamber.
  • the said second pump which is placed on the ship's deck (which generally can constitute an explosively dangerous region) and which is driven by an electric motor, is particularly exposed to the danger of explosion, since in combination with the motor and its electrical connections it is easy for spark for ⁇ mations to occur which can ignite the gases in the explosively dangerous region and particularly gases which have penetrated into or are formed in the electric motor.
  • the aim is a parti ⁇ cularly simple and operatively reliable solution which is made possible by the combination of the said first, hydraulically driven pump and the second, electrically driven pump.
  • the pump system according to the invention is characterised in that the housing is passed through by hydraulic pressure medium which is supplied from the return conduit from the hydraulic motor of the first pump.
  • drive medium of the first pump which is delivered from the return side of the hydraulic motor, as circulating protective medium for the electric motor of the second pump, there can be obtained a simple and effective instal ⁇ lation with a plentiful supply of protective medium and thereby with an effective circulation in the motor housing of the electric motor, without special control means.
  • the motor housing of the second pump is put into a branch conduit from the return conduit from the hydraulic motor of the first pump, with a back pressure valve arranged in the feed portion of the branch conduit, while there is in ⁇ serted in a portion of the return conduit, which runs parallel to the branch conduit, a pressure regulating valve.
  • the safety valve in the portion of the return conduit coupled in parallel can form a similar stop against the transfer of wear dust from the motor housing of the second pump to the motor housing of the first pump, at the same time as a suitable amount of the available return oil is regu ⁇ lated in a short circuit path outside the motor housing of the second motor.
  • a first pump 12 which is driven by a hydraulic motor 13 via a relatively short drive shaft 14.
  • the motor 13 with bearings (not shown) of the drive shaft 14 is received in a motor housing 15 (illustrated with broken lines) .
  • a drainage chamber 16 between the motor housing 15 and a pump housing 17 which surrounds a pump rotor 12a on the lower end of the drive shaft 14.
  • a shield chamber 20 (cofferdam) having a conduit connection 21 parallel to the pump conduit 19 to the deck 18 of the ship.
  • low pressure conduit 23 are shown in a freely disposed arrangement, but in practice it is preferred that the supply conduit 22 passes centrally inside the return conduit 23, while the return conduit 23 for its part passes internally in the conduit connection 21 to the ship's deck.
  • the illustrated pump 12 can be designed corre ⁇ spondingly as shown and described in Norwegian Patent Specification No. 123,115, both with respect to construction and mode of operation.
  • the pump conduit 19 and conduit connection 21 with associated conduits 22, 23 are led through the deck via a head 24 from which the pump conduit 19 extends with a conduit stump 19a to the inlet 25 to a second pump 26 (booster pump) arranged on the ship's deck while the conduit connection 21 leads via a conduit stump 21a to a suitable outlet on deck or at a suitable distance above and/or outside the deck.
  • a pump conduit 27 extends further to a suitable (not shown) delivery location outside the ship.
  • the said second pump 26 has a pump rotor 26a which is driven via a short shaft 31 from an electric motor 30.
  • the motor 30 with portions of the shaft 31 and associated bearings 32 is received in a motor housing 33. Between the motor housing 33 and housing
  • the motor housing 33 is surrounded over the whole length of the rotor of the motor and a distance behind the rotor of the motor by an extra protective jacket 37 which defines flow passage 38 from the inner hollow space 39 of the motor housing 33 to an outlet chamber 40 from which there extends an upper outlet conduit 41 to the downstream end of the return conduit 23, while there extends from the upstream end of the return conduit 23 a branch conduit 42 to the bottom of the motor housing 33 in front of the jacket 37.
  • a back pressure valve 43 which prevents low pressure hydraulic oil from running backwards to the hydraulic motor of the first pump.
  • a pressure regu ⁇ lating valve 44 which prevents low pressure hydraulic oil from running backwards to the hydraulic motor of the first pump.
  • a conduit 51 extends via a safety valve 52 to a mix of pumps 53 with an associated pressure regulating valve 54.
  • an overflow conduit 55 extends back to the tank 45, there being * inserted in the conduit 55 a back ' pressure valve 56.
  • the high pressure conduit 22 extends via a safety valve 58 to a quantity regulating valve 59 and from the valve 59 directly to the motor 13 of the first pump 12.
  • the quantity regu ⁇ lating valve 59 is arranged in the illustrated embodi ⁇ ment within the outlet chamber 40 of the protective jacket 37. From the valve 59 a low pressure branch conduit 60 runs back to the return conduit 23.
  • the drive medium and the cargo can be maintained separately from each other by means of relatively simple means and with the use of simple control measures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

Système de pompe destiné à être placé à des endroits présentant un danger d'explosion à bord d'un bateau citerne et comprenant deux pompes en tandem. Une première pompe (12), qui est submergée dans le cargo dans un réservoir de chargement (11), est entraînée par un moteur hydraulique (13) par l'intermédiaire d'un arbre court (14) passant au travers d'une chambre de drainage commandée par un milieu sous pression (16). Une deuxième pompe (26), qui est disposée librement dans la région présentant le danger d'explosion est entraînée par un moteur électrique (30) par l'intermédiaire d'un arbre court (31) passant au travers d'une chambre de drainage commandée par un milieu sous pression (35), ce moteur étant entouré d'une enceinte (33) au travers de laquelle s'écoule le fluide. L'enceinte (103) est traversée par le milieu sous pression hyraulique provenant de la conduite de retour (23) depuis le moteur hydraulique (13) de la première pompe (12).
PCT/NO1982/000056 1981-11-02 1982-11-02 Systeme de pompe destine a etre place a des endroits presentant un danger d'explosion a bord d'un bateau citerne WO1983001660A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO813688811102 1981-11-02
NO813688A NO149146C (no) 1981-11-02 1981-11-02 Pumpesystem for plassering i eksplosjonsfarlig omraade ombord i tankskip.

Publications (1)

Publication Number Publication Date
WO1983001660A1 true WO1983001660A1 (fr) 1983-05-11

Family

ID=19886294

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1982/000056 WO1983001660A1 (fr) 1981-11-02 1982-11-02 Systeme de pompe destine a etre place a des endroits presentant un danger d'explosion a bord d'un bateau citerne

Country Status (2)

Country Link
NO (1) NO149146C (fr)
WO (1) WO1983001660A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006122359A3 (fr) * 2005-05-17 2007-01-25 Ralph Alexander James Findlay Ensemble pompe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE612137C (de) * 1932-04-15 1935-04-13 Mario Tamini Fahrbare Pumpenanlage, insbesondere fuer Feuerloeschzwecke
DE644049C (de) * 1933-06-07 1937-04-23 Mario Tamini Einrichtung zum Anlassen und UEberwinden grosser Saughoehen an ortsbeweglichen Pumpen fuer Feuerloesch- und aehnliche Zwecke
US3304877A (en) * 1965-06-08 1967-02-21 J C Carter Company Submerged motor driven pumping system
NO123115B (fr) * 1967-10-18 1971-09-27 Patents & Dev As

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE612137C (de) * 1932-04-15 1935-04-13 Mario Tamini Fahrbare Pumpenanlage, insbesondere fuer Feuerloeschzwecke
DE644049C (de) * 1933-06-07 1937-04-23 Mario Tamini Einrichtung zum Anlassen und UEberwinden grosser Saughoehen an ortsbeweglichen Pumpen fuer Feuerloesch- und aehnliche Zwecke
US3304877A (en) * 1965-06-08 1967-02-21 J C Carter Company Submerged motor driven pumping system
NO123115B (fr) * 1967-10-18 1971-09-27 Patents & Dev As

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006122359A3 (fr) * 2005-05-17 2007-01-25 Ralph Alexander James Findlay Ensemble pompe

Also Published As

Publication number Publication date
NO149146B (no) 1983-11-14
NO813688L (no) 1983-05-03
NO149146C (no) 1990-11-22

Similar Documents

Publication Publication Date Title
AU702921B2 (en) A sub-sea pumping system and an associated method
EP0063444B1 (fr) Système de pompe submersible à entraînement électrique
US5336064A (en) Electric motor driven pump
CN102606617B (zh) 用于液压动力止推轴承的瞬时液压静力操作的系统和方法
KR20040016884A (ko) 선박 추진 장치 및 방법
US3574487A (en) Pump means
US8556600B2 (en) Protection system for subsea seawater injection pumps
US3304877A (en) Submerged motor driven pumping system
US4587076A (en) Sealing device for the drive shaft of a high pressure fluid pump
WO1983001660A1 (fr) Systeme de pompe destine a etre place a des endroits presentant un danger d'explosion a bord d'un bateau citerne
SG186446A1 (en) Combined barrier and lubrication fluids pressure regulation system and unit for a subsea motor and pump module
US6086331A (en) Safety pumping system for hazardous environments using pressurized gas in a plurality of chambers
US3741688A (en) Circulation pump for refrigeration plant
US2305648A (en) Submersible motor structure
GB2209801A (en) An apparatus for underwater conveyance of petroleum or natural gas
GB2149492A (en) Cooling means for a hydraulic system
JPH07242198A (ja) 船尾管シール装置
RU2004852C1 (ru) Центробежный насос дл перекачивани агрессивных и углеводородных сред
CA2239509C (fr) Dispositif de pompage sous-marin et procede correspondant
US2199490A (en) Submersible pump
EP4116185A1 (fr) Groupe propulseur pour un navire
NO345592B1 (en) Subsea motor and pump assembly and its use in a subsea desalination plant
SU1041629A1 (ru) Устройство дл контрол процесса транспортировки жидкости в трубопроводах
FI105531B (fi) Sovitelma sammutusjärjestelmän yhteydessä
SU1099114A1 (ru) Система маслоснабжени подшипника паровой турбины

Legal Events

Date Code Title Description
AK Designated states

Designated state(s): DE GB JP NL SE US

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载