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WO2009116109A1 - Système de fermeture pour conduites sous pression et procédé d’installation associé - Google Patents

Système de fermeture pour conduites sous pression et procédé d’installation associé Download PDF

Info

Publication number
WO2009116109A1
WO2009116109A1 PCT/IT2009/000055 IT2009000055W WO2009116109A1 WO 2009116109 A1 WO2009116109 A1 WO 2009116109A1 IT 2009000055 W IT2009000055 W IT 2009000055W WO 2009116109 A1 WO2009116109 A1 WO 2009116109A1
Authority
WO
WIPO (PCT)
Prior art keywords
plug
seat
closing system
fitting
closing
Prior art date
Application number
PCT/IT2009/000055
Other languages
English (en)
Inventor
Roberto Ravetti
Original Assignee
Roberto Ravetti
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 Roberto Ravetti filed Critical Roberto Ravetti
Priority to EP09721924A priority Critical patent/EP2268961A1/fr
Priority to RU2010142467/06A priority patent/RU2484355C2/ru
Publication of WO2009116109A1 publication Critical patent/WO2009116109A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow in pipes or hoses
    • F16L55/11—Plugs

Definitions

  • the present invention refers to a closing system, in particular for closing shaped fittings for interception of fluids, particularly gas.
  • the present invention further refers to a process for installing such closing system.
  • Closing systems are known in the art, that are typically used for plugging shaped fittings used for intercepting ducts for transporting water, gas or other pressurised fluids.
  • Such shaped fitting whose shape is substantially cylindrical, has a shaped end that is welded to the duct around the opening of this latter one, that it is necessary to plug: the upper opening, typically circular, is then equipped with an internal threading adapted to be engaged by a corresponding threading obtained on the circumference around a closing plug: in order to then proceed to close the duct intercepting fitting, it is necessary to place the plug inside the fitting opening, take the respective threading to mesh and rotate the plug with respect to the fitting itself till its complete screwing. It is clear that the above operations are extremely difficult in case of fittings and related plugs whose sizes and weights are big. Moreover, closing the plug onto the fitting would be severely difficult, if not even impossible, if dirt, debris or other residuals should be inserted between the threads.
  • object of the present invention is solving the above prior art problems, by providing a closing system for a fitting in which the plug can be made integral with the related fitting without using an interposed threading, making the fitting plugging operation quicker, more practical and easier.
  • FIG. 1 shows a side sectional view of a first preferred embodiment of the closing system according to the present invention
  • FIG. 2 shows a side sectional view of a second preferred embodiment of the closing system according to the present invention
  • FIG. 3 shows an enlargement of the part contained in box A in FIG. 1;
  • FIG. 4 shows an enlargement of the part contained in box B in FIG. 2.
  • the closing system 1 comprises at least one fitting 3, whose shape is preferably tubular with a symmetry axis designated by straight line S-S in Figures 1 and 2, having a first end 5 thereof adapted to be made integral, for example through welding or other suitable fastening means, around an opening of a duct and a second end 7 equipped with an opening 9, whose shape is preferably circular, adapted to house inside it at least one closing plug 11, preferably in a concentric position with symmetry axis R-R, such plug 11 being made integral with the fitting 3, and in particular inside the opening 9 of the second end 7 of the fitting 3 through at least three radial fastening pins 13, therefore having a symmetry axis P-P orthogonal to the symmetry axis R-R of the fitting 3 and the plug 11, each adapted to engage at least one respective perimeter and radial seat 15 of the plug 11 itself, passing through at least one respective housing seat 17 of the radial fitting 3, therefore also having a
  • fitting 3 be made integral with a curvilinear surface of a duct, its first end 5 will be suitably shaped.
  • the fitting 3 is internally equipped with at least one abutment shoulder 19 of the plug 11 itself.
  • the shoulder 19 provides a conical abutment to the plug 11, exploiting the interference between the walls of the related materials.
  • the shoulder provides a plane abutment to the plug 11.
  • the shoulder 19 can have any other shape adapted to provide an abutment surface to the plug 11 and keep it in position inside the opening 9 of the fitting 3 to allow the insertion of the fastening pin 13 inside the housing seat 17 and engage the seat 15 of the plug 11.
  • this latter one can be preferably made as at least one perimeter groove to the plug 11: in such a way, coupling between housing seat 17 and seat 15 can occur whichever the angular orientation of the plug 11 is around the symmetry axis S-S once having abutted again the shoulder 19.
  • each one of the fastening pins 13 is equipped, at least partially, with an external threading 13a adapted to grip a corresponding internal threading to the housing seat 17 and with a fastening end 13b going out of the housing seat 17 to engage the seat 15 of the plug 11.
  • the seat 15 could have the side walls not parallel but tapered, in such a way as to create an interference with the fastening end 13b of the pin 13 sufficient to consolidate the cooperation between seat 15 and pin 13 itself.
  • every fastening pin 13 corresponding to the opening of the housing seat 17 communicating with the outside can be equipped with at least one seat 13c for inserting a tool suitable for screwing and unscrewing the fastening pin 13 necessary to make the plug 11 integral with the fitting 3 or, on the contrary, in case of following removal of the plug 11 itself.
  • the opening of the housing seat 17 communicating with the outside can be equipped with at least one protecting cover 21, also equipped with at least one threaded portion adapted to grip the internal threading of the housing seat 17: in this latter case, also the head of the protecting cover 21 could be equipped with at least one inserting seat 21a (for example an hexagonal recess) of a suitable tool for screwing and unscrewing the protecting cover 21.
  • connection means to any suitable fixture, such as for example a duct plugging device or a duct drilling device: such connection means could then comprise at least one manifold or a connecting flange.
  • the shaped fitting is welded onto the piping; then, he covers 21 are inserted to obtain, through the compression of the 0-ring 22, a perfect seal to pressure (in this step the fastening pins 13 have been removed from their seats 15) .
  • a temporary on-off valve (whose shape is preferably plate) is assembled, through which it is possible to drill the pressurised duct by means of a suitable tube-drilling machine.
  • a fluid intercepting system is assembled, and then one works on the duct without pressure, since interception is performed in two points, between which it is possible to intervene.
  • the third step consists in removing the intercepting system and in closing the temporary on-off valve.
  • the fourth step is inserting the plug 11 in its own seat 19 and obtaining the airtight plugging of the shaped fitting.
  • the plug 11 is inserted through Ia temporary on-off valve, till it is compressed in the seat 19 and the duct plugging and pressure sealing are obtained.
  • a suitable sealing fixture for example the tube-drilling machine or a system with an hydraulic cylinder

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipe Accessories (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Cable Accessories (AREA)
  • External Artificial Organs (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

La présente invention concerne un système de fermeture (1) pour un raccord profilé (3) pour l’interception de fluides, en particulier des gaz, comprenant une première extrémité (5) conçue pour être rendue solidaire autour d’une ouverture d’une conduite et une seconde extrémité (7) munie d’une ouverture (9) conçue pour loger à l’intérieur au moins un bouchon de fermeture (11), ce bouchon (11) étant rendu solidaire du raccord (3) au moyen d’au moins trois ergots radiaux de fixation (13), chacun adapté pour s’engrener avec un siège périphérique et radial respectif (15) du bouchon (11). L’invention concerne également un procédé pour installer un tel système de fermeture (1).
PCT/IT2009/000055 2008-03-19 2009-02-13 Système de fermeture pour conduites sous pression et procédé d’installation associé WO2009116109A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09721924A EP2268961A1 (fr) 2008-03-19 2009-02-13 Système de fermeture pour conduites sous pression et procédé d'installation associé
RU2010142467/06A RU2484355C2 (ru) 2008-03-19 2009-02-13 Закрывающая система для трубопроводов, находящихся под давлением

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO2008A000209 2008-03-19
ITTO20080209 ITTO20080209A1 (it) 2008-03-19 2008-03-19 Sistema di chiusura di condutture in pressione e relativo procedimento di installazione.

Publications (1)

Publication Number Publication Date
WO2009116109A1 true WO2009116109A1 (fr) 2009-09-24

Family

ID=40293282

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2009/000055 WO2009116109A1 (fr) 2008-03-19 2009-02-13 Système de fermeture pour conduites sous pression et procédé d’installation associé

Country Status (4)

Country Link
EP (1) EP2268961A1 (fr)
IT (1) ITTO20080209A1 (fr)
RU (1) RU2484355C2 (fr)
WO (1) WO2009116109A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2661420C2 (ru) * 2016-08-17 2018-07-16 Акционерное Общество "Волгоградгоргаз" Закрывающая система для трубопроводов, находящихся под давлением
RU2675429C2 (ru) * 2017-05-26 2018-12-19 Акционерное Общество "Волгоградгоргаз" Устройство для установки закрывающей системы для газопроводов, находящихся под давлением
RU202306U1 (ru) * 2020-04-27 2021-02-11 Общество с ограниченной ответственностью Научно-инжиниринговая компания "АССИ" (ООО НИК "АССИ") Приварной фитинг для трубопроводов под давлением

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2988111A (en) * 1958-10-06 1961-06-13 Williamson Inc T Fluid tight closure
US4344460A (en) * 1980-11-28 1982-08-17 Advance Valve Installations Apparatus for plugging a pressure piping system
US4513788A (en) * 1983-11-28 1985-04-30 Koppl Company Inc. Flange system for pipeline plugging
US6810903B1 (en) * 1998-04-22 2004-11-02 Hydra-Stop, Inc. Conduit flow controller

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL150144B1 (pl) * 1986-04-04 1990-04-30 Uchwyt do hydraulicznego zamykania i uszczelniania końców rur poddanych ciśnieniu wewnętrznemu

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2988111A (en) * 1958-10-06 1961-06-13 Williamson Inc T Fluid tight closure
US4344460A (en) * 1980-11-28 1982-08-17 Advance Valve Installations Apparatus for plugging a pressure piping system
US4513788A (en) * 1983-11-28 1985-04-30 Koppl Company Inc. Flange system for pipeline plugging
US6810903B1 (en) * 1998-04-22 2004-11-02 Hydra-Stop, Inc. Conduit flow controller

Also Published As

Publication number Publication date
EP2268961A1 (fr) 2011-01-05
RU2010142467A (ru) 2012-04-27
ITTO20080209A1 (it) 2008-06-18
RU2484355C2 (ru) 2013-06-10

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