SU672394A1 - Pipeline closing-off method - Google Patents
Pipeline closing-off methodInfo
- Publication number
- SU672394A1 SU672394A1 SU772563238A SU2563238A SU672394A1 SU 672394 A1 SU672394 A1 SU 672394A1 SU 772563238 A SU772563238 A SU 772563238A SU 2563238 A SU2563238 A SU 2563238A SU 672394 A1 SU672394 A1 SU 672394A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- pipeline
- plug
- pipeline closing
- space
- shell
- 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
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
t. .: , .; . ;Изобретение относитс «трубопроводному транспорту и может быть использовано дл перекрыти сечени трубопровода при проведении ремонтны работ. Известен способ перекрыти трубопровода , предусматривающий создание в нем герметизирующего тампона путем закачивани в .трубопровод полимерной композиции С11. . Также известен способ перёкрыти трубопровода, включающий размещение внутри трубопровода заглушки с наруж ной и внутренней оболочками из эла зтичного материала и заполнение прост ранства между оболочками в зкой жидкостью , а полости внутренней оболоч .ки - сжатым воздухом 2. По известному способу недостаточна надежность перекрыти , возможна деформаци заглушки под действием давлени перекачиваемой по трубопроводу среды. С целью повышени надежности перекрыти трубопровода, перед эапол- нением пространства между оболочками внутреннюю оболочку заполн ют полимерной композицией, образующей после полимеризации твердое дро. Сущность способа по сн етс чертежом . В трубопроводе 1 вырезают окно 2 дл введени заглушки с наружной 3 и внутренней 4 оболочкали из эластичного материала, в эластичную оболочку 4 через полую ось 5 закачивают полимерную композицию, например пенополиуретан ППУ-ЗС, образующую после полимеризации твердое дро, заккрепленное на оси 5 и ограниченное оболочкой 4, а пространство между оболочкакш 3 и 4 через патрубок 6 заполн ют газом или жидкостью под давлением до полного перекрыти проходного сечени трубопровода. Ядро из полимера, закрепленное на оси 5, удерживает заглушку от перемещени вдоль трубопровода под воздействием. давлени перекачиваемой среды. По окончании ремонтных работ твердое дро раствор ют, например, в метакризол.е, из пространства между оболочкаьет выпускают сжатый газ. и вынимают заглушку из трубопровода. Использование способа по насто щему изобретению значительно повышает надежность перекрыти трубопровода, исключа возможность перемещени заглушки по трубопроводу под действиемt. .:,.; . The invention relates to a pipeline transport and can be used to close a section of a pipeline during repair work. There is a method of shutting off the pipeline, which involves creating a sealing plug in it by pumping the polymer composition C11 into the pipeline. . A method is also known to overlap a pipeline, which includes placing a plug with outer and inner shells of an elastic material inside the pipeline and filling the space between the shells with a viscous liquid, and the cavity of the inner sheath with compressed air 2. By a known method, there is insufficient reliability to block deformation of the plug under the action of the pressure of the pumped medium. In order to increase the reliability of pipeline overlap, before the space between the shells is filled, the inner shell is filled with a polymer composition that forms a solid core after polymerization. The essence of the method is illustrated in the drawing. In pipe 1, a window 2 is cut out for inserting the plug from the outer 3 and inner 4 sheaths from elastic material. A polymer composition, such as polyurethane foam PPU-3S, is formed after the polymerization and forms a solid core fixed to axis 5 and limited shell 4, and the space between shell 3 and 4 through pipe 6 is filled with gas or liquid under pressure until the pipeline cross section is completely blocked. A polymer core fixed on axis 5 keeps the plug from moving along the pipeline under impact. pressure of the pumped medium. At the end of the repair work, solid cores are dissolved, for example, in metacrizole, compressed gas is released from the space between the shell. and remove the plug from the pipeline. The use of the method of the present invention significantly increases the reliability of pipeline shut-off, eliminating the possibility of the stub moving along the pipeline under the action of
давлени перекачиваемой среды, и уПрс дйёт удаление заглушки из трубопровода по проведении ремонтных ра-. бот.pressure of the pumped medium, and the system manages to remove the plug from the pipeline during repair work. bot
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772563238A SU672394A1 (en) | 1977-12-06 | 1977-12-06 | Pipeline closing-off method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772563238A SU672394A1 (en) | 1977-12-06 | 1977-12-06 | Pipeline closing-off method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU672394A1 true SU672394A1 (en) | 1979-07-05 |
Family
ID=20741668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU772563238A SU672394A1 (en) | 1977-12-06 | 1977-12-06 | Pipeline closing-off method |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU672394A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5400826A (en) * | 1988-11-10 | 1995-03-28 | British Gas Plc | Temporarily blocking the bore of a pipe through which a fluid flows with a foamed plus removed by dissolving |
| WO2001069120A1 (en) * | 2000-03-14 | 2001-09-20 | Yarra Valley Water Limited | Improved pipeline isolating device |
| RU2701652C1 (en) * | 2019-02-07 | 2019-09-30 | Общество с ограниченной ответственностью "Трейд Металл" | Method of dismantling a pipeline for decommissioning or for repair purposes |
-
1977
- 1977-12-06 SU SU772563238A patent/SU672394A1/en active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5400826A (en) * | 1988-11-10 | 1995-03-28 | British Gas Plc | Temporarily blocking the bore of a pipe through which a fluid flows with a foamed plus removed by dissolving |
| US5687771A (en) * | 1988-11-10 | 1997-11-18 | British Gas Plc | Temporarily blocking the bore of a pipe through which a fluid flows with a foamed plug removed by dissolving |
| WO2001069120A1 (en) * | 2000-03-14 | 2001-09-20 | Yarra Valley Water Limited | Improved pipeline isolating device |
| RU2701652C1 (en) * | 2019-02-07 | 2019-09-30 | Общество с ограниченной ответственностью "Трейд Металл" | Method of dismantling a pipeline for decommissioning or for repair purposes |
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