WO2005111493A1 - Methode de reparation d'une fuite sur une canalisation de gaz a l’endroit d’une bride - Google Patents
Methode de reparation d'une fuite sur une canalisation de gaz a l’endroit d’une bride Download PDFInfo
- Publication number
- WO2005111493A1 WO2005111493A1 PCT/FR2005/000876 FR2005000876W WO2005111493A1 WO 2005111493 A1 WO2005111493 A1 WO 2005111493A1 FR 2005000876 W FR2005000876 W FR 2005000876W WO 2005111493 A1 WO2005111493 A1 WO 2005111493A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- formwork
- valve
- rigid
- leak
- pipe
- Prior art date
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
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/175—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by using materials which fill a space around the pipe before hardening
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/045—Details of casing, e.g. gas tightness
Definitions
- the present invention relates to the repair of leaks in pipes where fluid under pressure circulates and in particular a method of repairing a fluid pipe at the location of the leak.
- the flanges Due to their design, the flanges always use a "joint" of more or less rigid material capable of sealing locally. This part constitutes the weak point of the flange, and mainly becomes the source of leakage.
- the complexity stems from the location of the leak which can interfere either in the upper part of the joint, or run through the fixing bolts. So to speak, in such conditions the leak remains undetectable.
- the metal formwork has the same constraints as above but injection difficulties are added. Indeed, it is impossible to inject any resin while the flange is leaking because of big adhesion problems appear. In addition, injection under pressure is not possible because the operator risks sending resin inside the pipe.
- a second process mainly used in Great Britain consists of injecting resin.
- the flange is perforated and a suitable resin is injected at the leaking joint.
- the resin is supposed to go around the flange, fill any gaps, polymerize despite the operating conditions and finally stop the leak.
- This delicate and random technology is not widely used in maintenance services.
- the “bandage” process consists in placing a strip of glass fabric pre-impregnated with resin. The break is difficult or even impossible under pressure. This system of "tourniquet" around the fleeing flange seems closer to a makeshift DIY than a repair certified by professionals.
- This process has major drawbacks, in particular it can only be used if the surface condition of the flange is prepared and cleaned in order to favor the bonding of the composite (or intervention under leakage does not guarantee it) and if it is installed properly, it condemns the bridle- from any access and prevents its dismantling during- a scheduled maintenance campaign.
- the object of the invention is to provide a method of repairing a pipe containing pressurized fluid which can be carried out easily and effectively while the pipe is kept operational.
- Another object of the invention is to provide a method of repairing a pipe containing pressurized fluid, at the location of a flange, which leaves the flange intact and allows easy access in the event of intervention. major on the flange.
- the object of the invention is therefore a method of repairing a pipe containing pressurized fluid comprising at least one leak comprising the following steps: a) installation of a flexible and waterproof formwork bearing on the pipe of each side of the leak and trapping the latter, the flexible formwork comprising a valve so that the fluid coming from the leak can escape, b) installation of a rigid and sealed formwork bearing on the pipe on each side of the flexible formwork and trapping the latter, and c) injection of a liquid polymerizable material inside the rigid formwork, the flexible formwork then being trapped in a sleeve of polymer resin after polymerization of the polymerizable material.
- this leak could be located anywhere in the pipeline outside of a flange.
- the pipe 11 is a gas transport pipe such as a pipe through which one or more electric cables pass in an atmosphere of sulfur hexafluoride gas intended to insulate the pipe electrically and thermally. But it could be a liquid transport pipe. Note that it does not matter to know where the leak is located, as we will see later.
- the first step of the method according to the invention consists in surrounding the flange with a first flexible and watertight formwork 12 having the shape of a ring open at its base to trap the flange 10.
- a first flexible and watertight formwork 12 having the shape of a ring open at its base to trap the flange 10.
- the edges 14 and 16 formwork perpendicular to the axis of the pipe 11 are fixed to the lateral sides of the flange, for example using a double-sided adhesive.
- the flexible and waterproof formwork 12 has a communication with the outside, a valve 18, which it is recommended to place at the highest point of the formwork during its installation as illustrated in the figure.
- This valve would of course be located at the lowest point if the pipeline contained liquid.
- This valve allows the escape of gas from the leak when the formwork has been installed around the flange. It can therefore be seen that the exact location of the leak does not matter since the leaking gas is trapped in the waterproof formwork 12 and can only escape through the valve 18.
- the valve cap is removed to allow the leaking gas to escape without causing an overpressure in the formwork. Note that it is recommended to use a formwork that can withstand gas pressure although this is not mandatory.
- the second step consists in installing a second rigid and waterproof formwork 20 trapping the first formwork and having the shape of a ring open at its base like the first formwork.
- the formwork is fixed by its two edges 22 and 24 to the pipe 11 by means of an appropriate fixing means such as a foam adhesive.
- the rigid formwork 20 can be any type of sleeve intended for plugging leaks in the pipes, and in particular the modular sleeve which is the subject of the patent.
- the sleeve is fixed securely to the pipe 11 by means of straps (not shown) which tighten the edges 22 and 24 of the flange.
- the rigid formwork or sleeve 20, sealed, is intended to receive a polymerizable material. To do this, it has at least one injection orifice 27 in which a funnel 28 adapted to pour the polymerizable material is placed there.
- the injection opening of the rigid formwork must be at the highest point of the formwork and close to the valve 18 (in the case of a gas pipe).
- the rigid formwork 20 has a hole which is placed exactly plumb with the valve 18 so as to introduce there a guide tube intended to be placed around the valve.
- This guide tube has the function of directing the gas out of the rigid formwork.
- the third step consists in injecting a polymerizable resin inside the rigid formwork 20 by pouring the liquid resin into the funnel 28.
- the liquid polymerizable material fills the entire volume of the rigid formwork outside the flexible formwork. Thanks to the guide tube 30 which surrounds the valve 18, the liquid material cannot penetrate inside the flexible formwork while the leaking gas continues to escape through the valve 18.
- valve closing plug is introduced into the guide tube 30 when the level of the resin reaches the valve and the valve is closed using the plug. Then, after removing the guide tube, the liquid resin is continued to be introduced until the filling has reached the injection holes, the valve being embedded in the resin. It goes without saying that this technique can only be used if the flexible formwork withstands a pressure higher than that of the gas inside the pipe.
- the resin is injected until it reaches the injection holes without the guide tube being removed. It is only when the resin is polymerized and therefore solid that the plug is introduced into the guide tube and that the valve is closed.
- the method which has just been described has the advantage of protecting the flange inside the flexible formwork at the same time as it ensures total sealing. Thereafter, if it becomes necessary to access the flange for a major intervention, it will suffice to break the sleeve of polymerized resin and to release the flange by removing the flexible formwork.
- the method according to the invention applies to any leak occurring at a any place in the pipeline, i.e. outside of a flange.
- the flexible formwork is fixed directly on the outer wall of the pipe as is also fixed the rigid formwork.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007510064A JP2007534908A (ja) | 2004-04-28 | 2005-04-12 | ガスパイプのフランジ部の漏れを修理する方法 |
CA2564109A CA2564109C (fr) | 2004-04-28 | 2005-04-12 | Methode de reparation d'une fuite sur une canalisation de gaz a l'endroit d'une bride |
EP05757231A EP1759143B1 (fr) | 2004-04-28 | 2005-04-12 | Methode de reparation d'une fuite sur une canalisation de gaz a l'endroit d'une bride |
US11/587,429 US7635007B2 (en) | 2004-04-28 | 2005-04-12 | Method of repairing a leak in a flange of a gas pipe |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0404484 | 2004-04-28 | ||
FR0404484A FR2869668B3 (fr) | 2004-04-28 | 2004-04-28 | Methode de reparation d'une canalisation de gaz a l'endroit d'une bride |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005111493A1 true WO2005111493A1 (fr) | 2005-11-24 |
Family
ID=34971812
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2005/000876 WO2005111493A1 (fr) | 2004-04-28 | 2005-04-12 | Methode de reparation d'une fuite sur une canalisation de gaz a l’endroit d’une bride |
Country Status (8)
Country | Link |
---|---|
US (1) | US7635007B2 (fr) |
EP (1) | EP1759143B1 (fr) |
JP (1) | JP2007534908A (fr) |
CN (1) | CN100516621C (fr) |
CA (1) | CA2564109C (fr) |
FR (1) | FR2869668B3 (fr) |
RU (1) | RU2372548C2 (fr) |
WO (1) | WO2005111493A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2648294A1 (fr) | 2012-04-05 | 2013-10-09 | Siemens Aktiengesellschaft | Dispositif d'étanchéification ultérieure d'un boîtier d'isolation rempli de gaz isolant dans la technologie haute tension |
CN104266034A (zh) * | 2014-09-29 | 2015-01-07 | 广东韶钢松山股份有限公司 | 一种管道法兰接口泄露快速修复装置及其修复方法 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1774218B1 (fr) * | 2004-06-02 | 2013-07-10 | Golden Triangle Enterprises Pty Ltd. | Appareil et procede pour capturer et contenir des fuites de gaz d'hexafluorure de soufre |
CN101749512B (zh) * | 2008-12-15 | 2014-05-07 | 北京安科管道工程科技有限公司 | 法兰加固和/或带压堵漏的方法 |
CN102455146B (zh) * | 2010-10-15 | 2013-08-21 | 中海石油炼化有限责任公司 | 空气冷却器丝堵的堵漏装置 |
GB201309330D0 (en) * | 2013-05-23 | 2013-07-10 | Sev Trent Water Ltd | Pipe Connection |
MC200156B1 (fr) | 2013-07-30 | 2014-02-19 | 3X Eng | Bande de renforcement améliorée pour la réparation des canalisations de transport de fluides |
MC200157B1 (fr) | 2013-07-30 | 2014-02-19 | 3X Eng | Plaque de retenue pour bande de renforcement |
US11585478B2 (en) | 2016-03-09 | 2023-02-21 | Jose A. Cajiga | Casing system and method for pipeline reinforcement and repair |
FR3071584B1 (fr) | 2017-09-24 | 2020-01-10 | 3X Engineering | Dispositif pour faciliter la reparation des pipelines |
CN109681721A (zh) * | 2019-01-10 | 2019-04-26 | 中海油能源发展股份有限公司 | 一种法兰及由壬的专用防护装置 |
CN112682615A (zh) * | 2021-01-07 | 2021-04-20 | 中国人民解放军陆军工程大学 | 一种应急堵漏装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3938774A (en) * | 1973-07-02 | 1976-02-17 | Btr Industries Limited | Method and apparatus for sealing leaking pipeline joints |
GB2080916A (en) * | 1980-07-29 | 1982-02-10 | Encapsulation Services Ltd | Repairing a leak in a pipe |
Family Cites Families (11)
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US3563276A (en) * | 1968-08-29 | 1971-02-16 | Bonded Products Inc | Pipe joint cocoon |
US4053176A (en) * | 1975-10-15 | 1977-10-11 | West Chester Chemical Co., Inc. | Collar for sealing pipe joints |
GB2093146A (en) * | 1981-02-12 | 1982-08-25 | British Gas Corp | Improvements in sealing a leak in a pipe or pipeline carrying fluid under pressure |
JP2788095B2 (ja) * | 1990-03-29 | 1998-08-20 | 大阪瓦斯株式会社 | 流路形成体の修繕方法 |
GB2288216B (en) * | 1994-03-31 | 1997-11-12 | British Gas Plc | Method & apparatus for lining a pipe with a polymer liner |
FR2740199B1 (fr) | 1995-10-18 | 1998-01-02 | 3X Engineering | Manchon modulaire pour la protection, la reparation ou la renovation d'une canalisation |
JP3453480B2 (ja) * | 1996-07-26 | 2003-10-06 | 日本ペトラ株式会社 | 流体配管の漏洩箇所の補修方法 |
FR2782367B1 (fr) | 1998-08-12 | 2000-09-22 | 3X Engineering | Dispositif de colmatage d'une fuite dans une canalisation |
CN1081309C (zh) * | 1998-10-28 | 2002-03-20 | 上海市徐汇区化学事故应急救援工作站 | 管道用快速带压堵漏方法 |
US6217688B1 (en) * | 1999-01-25 | 2001-04-17 | Phillip G. Landers | Method of repairing a flanged pipe joint |
FR2851635B1 (fr) | 2003-02-24 | 2006-06-30 | 3X Engineering | Manchon a insert pour la reparation d'une canalisation de transport de fluide a haute pression |
-
2004
- 2004-04-28 FR FR0404484A patent/FR2869668B3/fr not_active Expired - Lifetime
-
2005
- 2005-04-12 CN CNB2005800134081A patent/CN100516621C/zh active Active
- 2005-04-12 WO PCT/FR2005/000876 patent/WO2005111493A1/fr active Application Filing
- 2005-04-12 RU RU2006141841/06A patent/RU2372548C2/ru active
- 2005-04-12 EP EP05757231A patent/EP1759143B1/fr active Active
- 2005-04-12 US US11/587,429 patent/US7635007B2/en active Active
- 2005-04-12 JP JP2007510064A patent/JP2007534908A/ja active Pending
- 2005-04-12 CA CA2564109A patent/CA2564109C/fr active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3938774A (en) * | 1973-07-02 | 1976-02-17 | Btr Industries Limited | Method and apparatus for sealing leaking pipeline joints |
GB2080916A (en) * | 1980-07-29 | 1982-02-10 | Encapsulation Services Ltd | Repairing a leak in a pipe |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2648294A1 (fr) | 2012-04-05 | 2013-10-09 | Siemens Aktiengesellschaft | Dispositif d'étanchéification ultérieure d'un boîtier d'isolation rempli de gaz isolant dans la technologie haute tension |
CN104266034A (zh) * | 2014-09-29 | 2015-01-07 | 广东韶钢松山股份有限公司 | 一种管道法兰接口泄露快速修复装置及其修复方法 |
Also Published As
Publication number | Publication date |
---|---|
US7635007B2 (en) | 2009-12-22 |
EP1759143B1 (fr) | 2012-10-10 |
FR2869668B3 (fr) | 2007-02-09 |
JP2007534908A (ja) | 2007-11-29 |
US20080092972A1 (en) | 2008-04-24 |
EP1759143A1 (fr) | 2007-03-07 |
FR2869668A1 (fr) | 2005-11-04 |
RU2372548C2 (ru) | 2009-11-10 |
CN100516621C (zh) | 2009-07-22 |
CA2564109C (fr) | 2013-05-07 |
CA2564109A1 (fr) | 2005-11-24 |
CN1946963A (zh) | 2007-04-11 |
RU2006141841A (ru) | 2008-06-10 |
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