CN107387935B - Compensator upstream end pipeline pressure leakage blocking device and leakage blocking method - Google Patents
Compensator upstream end pipeline pressure leakage blocking device and leakage blocking method Download PDFInfo
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- CN107387935B CN107387935B CN201710835111.8A CN201710835111A CN107387935B CN 107387935 B CN107387935 B CN 107387935B CN 201710835111 A CN201710835111 A CN 201710835111A CN 107387935 B CN107387935 B CN 107387935B
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- 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
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a compensator upstream end pipeline under-pressure leakage blocking device and a method, the device comprises a gate valve, a water pump and a compensator, wherein the gate valve is arranged on an upstream end pipeline of the compensator, a top opening is arranged on the upstream end pipeline between the gate valve and the compensator, the water pump is arranged at the front part of the top opening, a pipeline sealing structure is arranged at the rear part of the top opening, and the pipeline sealing structure is in sealing fit with the inner wall of the pipeline at the top opening; the method comprises the following steps: closing the gate valve upstream of the compensator; an opening is arranged at the top of the pipeline at the rear part of the gate valve; a water pump is arranged at the opening for pumping water; putting into a pipeline sealing structure; a diversion valve is arranged at the bottom of the front opening of the pipeline sealing structure; replacing the compensator; and opening the diversion valve, removing the pipeline sealing structure and the drainage pump, and recovering the sealing state of the top opening by welding. The invention is easy to assemble, disassemble and use, can realize the water-free of the upstream pipeline of the compensator under the condition that the valve is not closed tightly, and shortens the time for processing the pipeline fault.
Description
Technical Field
The invention relates to the technical field of hot plugging of a heating pipeline, in particular to a hot plugging device and a hot plugging method for a pipeline at the upstream end of a compensator, which are used for quickly repairing and replacing a large-diameter heating pipeline compensator after bursting.
Background
In heating power heating pipe way operation in-process, the compensator phenomenon of bursting takes place occasionally, causes long time heating power to stop supplying easily, causes very big influence to resident user's work and life, causes economic loss even to industrial user, brings great energy waste to the heat supply unit simultaneously, consequently needs high-efficient completion emergency repair task in the short time. Especially, the major diameter pipeline more than DN600, water supply pressure is big, water supply temperature is high, need close the valve of front end among the prior art, meets the not tight condition of valve closure, can't cut off rivers completely, can not realize welding under the anhydrous environment, need close more last grade valve again, or bypass drainage, the defect and the problem that exist are: the waiting time is long; great difficulty is caused to the work of replacing the compensator, and the influence surface is enlarged; in order to solve the problems, a simple, efficient and practical plugging device needs to be developed.
Disclosure of Invention
The invention provides a pressurized plugging device for a pipeline at the upstream end of a compensator in order to solve the problems in the prior art; the invention has the characteristics of simple structure, easy operation, low cost, strong practicability and the like, can realize the waterless environment of the upstream pipeline of the compensator, and creates good welding conditions for the replacement of the compensator. After the device is put into use, the fault handling time is reduced by 60-70% compared with the prior similar accidents.
The invention also provides a leakage stopping method by utilizing the compensator upstream end pipeline pressure stopping device.
The technical scheme for solving the technical problem of the invention is as follows:
the utility model provides a compensator upstream end pipeline area pressure plugging device, includes gate valve, suction pump, pipeline seal structure, compensator, and on the upstream end pipeline of compensator was located to the gate valve, be equipped with the open-top on the upstream end pipeline between gate valve and compensator, the front portion of open-top position was located to the suction pump, is equipped with pipeline seal structure at the rear portion of open-top position, and pipeline seal structure and the sealed cooperation of the pipeline inner wall of open-top position.
And a diversion valve is arranged at the bottom of the top opening position of the front part of the pipeline sealing structure.
The pipeline sealing structure comprises a thin-wall cylinder, and a sealing gasket is arranged on the outer cylindrical surface of the cylinder.
The sealing gasket is a silica gel gasket.
The pipeline sealing structure further comprises a fastener, and the fastener clamps the sealing gasket and the inner wall of the pipeline.
The fastener comprises a steel belt, the lower portion of the steel belt is matched with the outer wall of the pipeline, the steel belt portion is matched with the upper portion of the outer cylindrical surface of the cylinder, and two ends of the steel belt are connected through fastening clamps.
The leakage blocking method by utilizing the compensator upstream end pipeline pressure blocking device comprises the following steps:
1) Closing the gate valve upstream of the compensator;
2) An opening is arranged at the top of the pipeline at the rear part of the gate valve;
3) A water pump is arranged at the opening for pumping water;
4) Putting the pipeline sealing structure, and adjusting the fastener to ensure that the sealing surface between the pipeline sealing structure and the inner wall of the pipeline is well sealed;
5) A bottom opening is formed in the bottom of the opening position of the front part of the pipeline sealing structure, and a diversion valve is installed at the bottom opening;
6) Taking down the original compensator from the original connecting position of the compensator;
7) Replacing the compensator;
8) And opening the diversion valve, removing the pipeline sealing structure and the drainage pump, and recovering the sealing state of the top opening by welding.
The invention has the advantages of
1. The invention has simple structure, easy assembly, disassembly and use, can realize the waterless environment of the upstream pipeline of the compensator under the condition of untight closing of the valve, and creates good welding conditions for the replacement and repair of the compensator, and after the device of the invention is used, the pipeline fault processing time is shortened by 60 to 70 percent compared with the structure of the prior art.
2. The pipeline sealing structure comprises a thin-wall cylinder, a sealing gasket is arranged on the outer cylindrical surface of the cylinder, and the cylinder and the sealing gasket are in sealing fit with the inner wall of the pipeline, so that the fitting surface is well sealed and does not leak water, the pressurized leakage stoppage can be quickly completed under the condition that a valve is not closed tightly, and the pipeline sealing structure is simple in structure, efficient and practical. The sealing gasket is a silica gel gasket, the silica gel gasket is matched with the inner wall of the pipeline, and after a locking force is applied, the sealing performance is good, the adsorption performance is high, the thermal stability is good, and the sealing gasket has the advantages of higher elasticity and mechanical strength.
3. The bottom of the top opening position of the front part of the pipeline sealing structure is provided with the diversion valve, so that the water in the pipeline can be quickly discharged in the subsequent process of removing the blind plate, the working condition is created for the welding recovery of the pipeline opening position to the original state, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a schematic view of the connection and matching structure of the pipeline sealing structure and the pipeline.
Detailed Description
For a better understanding of the present invention, embodiments thereof are explained in detail below with reference to the accompanying drawings.
With reference to fig. 1 to 3, a compensator upstream end pipeline pressurized plugging device comprises a gate valve 1, a water suction pump 2, a pipeline sealing structure 3 and a compensator 4, wherein the gate valve 1 is arranged on an upstream end pipeline 7 of the compensator 4, a top opening 8 is arranged on the upstream end pipeline between the gate valve 1 and the compensator 4, the opening size is suitable for the diameter of the upstream end pipeline, the water suction pump 2 is arranged in the front of the top opening position, the pipeline sealing structure 3 is arranged at the rear of the top opening position, and the pipeline sealing structure 3 is in sealing fit with the inner wall of the pipeline at the top opening position.
A diversion valve 6 is arranged at the bottom of the top opening position of the front part of the pipeline sealing structure 3. Through the diverter valve of pipeline bottom, can get rid of pipeline normal water fast after getting rid of pipeline seal structure 3, for pipeline opening position welding resumes to original condition creation operating condition, guaranteed the operating efficiency.
The pipe sealing structure 3 comprises a thin-wall cylinder 31, and a sealing gasket 32 is arranged on the outer cylindrical surface of the cylinder. Through the sealing fit of the cylinder 31 and the sealing gasket 32 with the inner wall of the pipeline, the matching surface is sealed well and does not seep water, the leakage stoppage under pressure can be rapidly completed under the condition that the valve is not closed tightly, and the structure is simple, efficient and practical.
The sealing pad 32 is a silica gel pad. After the silica gel pad is added, the silica gel pad is inosculated with the inner wall of the pipeline, and after the locking force is added, the sealing is good; the silica gel pad has a thickness of 8-10 mm, and has the advantages of high adsorption performance, good thermal stability, and high elasticity and mechanical strength.
The pipe sealing structure 3 further includes a fastening member 33, and the fastening member 33 clamps the gasket 32 to the inner wall of the pipe.
The fastener 33 comprises a steel belt 34, the lower portion of the steel belt is matched with the outer wall of the pipeline, the steel belt portion is matched with the upper portion of the outer cylindrical surface of the cylinder 31, and two ends of the steel belt are connected through a fastening clamp 35.
A method for plugging a pipeline at the upstream end of a compensator in a pressurized manner comprises the following steps:
1) Closing the gate valve 1 upstream of the compensator;
2) An opening 8 is arranged at the top of the pipeline at the rear part of the gate valve 1, and the size of the opening 8 is generally 500mm in the axial direction and about 1/2 of the pipe diameter in the radial direction;
3) A water suction pump 2 is arranged at the opening 8 to pump water, so that the water pressure is reduced;
4) Placing the pipeline sealing structure 3, and adjusting the fastener 33 to ensure that the pressure intensity of the sealing surface between the pipeline sealing structure and the inner wall of the pipeline reaches about 0.8Mpa and the sealing surface is well sealed;
5) The bottom of the opening position of the front part of the pipeline sealing structure 3 is provided with a bottom opening, and a diversion valve 6 is arranged at the bottom opening;
6) Taking down the original compensator from the two ends of the original connecting position 5 of the compensator;
7) Replacing the new compensator;
8) And opening the diversion valve, removing the pipeline sealing structure 3 and the drainage pump, and recovering the sealing state of the top opening 8 by welding.
In actual operation, after the gate valve 1 is closed, an opening 8 with a proper size is cut at the top of the pipeline; placing a water pump for quick drainage; a diversion valve is arranged at an opening at the bottom of the pipeline; the prefabricated pipeline sealing structure 3 is in sealing fit with the inner wall of the pipeline through the cylinder 31 and the sealing gasket 32, after a locking force is applied, the sealing is good, so that the matching surface is good in sealing and water seepage-proof, and the sealing gasket 32 is made of 8mm-10mm silica gel, so that the prefabricated pipeline sealing structure has the advantages of being high in adsorption performance, good in thermal stability, and high in elasticity and mechanical strength.
Although the specific embodiments of the present invention have been described with reference to the accompanying drawings, the scope of the present invention is not limited thereto, and various modifications and variations can be made by those skilled in the art without inventive efforts based on the technical solution of the present invention.
Claims (5)
1. A pressure leakage blocking device for a pipeline at the upstream end of a compensator is characterized by comprising a gate valve, a water suction pump and the compensator, wherein the gate valve is arranged on the pipeline at the upstream end of the compensator;
the pipeline sealing structure comprises a thin-wall cylinder, and a sealing gasket is arranged on the outer cylindrical surface of the cylinder; the pipeline sealing structure further comprises a fastener, and the fastener clamps the sealing gasket and the inner wall of the pipeline.
2. The device for plugging a pipeline at the upstream end of a compensator according to claim 1, wherein a diversion valve is arranged at the bottom of the top opening position of the front part of the pipeline sealing structure.
3. The compensator upstream end pipeline pressure plugging device as claimed in claim 1, wherein the sealing gasket is a silica gel gasket.
4. The device for plugging the pipeline pressure at the upstream end of the compensator as claimed in claim 1, wherein the fastener comprises a steel belt, the lower part of the steel belt is matched with the outer wall of the pipeline, the steel belt part is matched with the upper part of the outer cylindrical surface of the cylinder, and the two ends of the steel belt are connected through a fastening clamp.
5. A plugging method using the pressurized plugging device for the pipeline at the upstream end of the compensator as claimed in any one of claims 1 to 4, characterized by comprising the following steps:
1) Closing a gate valve upstream of the compensator;
2) An opening is arranged at the top of the pipeline at the rear part of the gate valve;
3) A water pump is arranged at the opening for pumping water;
4) Putting the pipeline sealing structure, and adjusting the fastener to ensure that the sealing surface between the pipeline sealing structure and the inner wall of the pipeline is well sealed;
5) A bottom opening is formed in the bottom of the opening position of the front part of the pipeline sealing structure, and a diversion valve is installed at the bottom opening;
6) Taking down the original compensator from the original connecting position of the compensator;
7) Replacing the compensator;
8) And opening the diversion valve, removing the pipeline sealing structure and the drainage pump, and recovering the sealing state of the top opening by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710835111.8A CN107387935B (en) | 2017-09-15 | 2017-09-15 | Compensator upstream end pipeline pressure leakage blocking device and leakage blocking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710835111.8A CN107387935B (en) | 2017-09-15 | 2017-09-15 | Compensator upstream end pipeline pressure leakage blocking device and leakage blocking method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107387935A CN107387935A (en) | 2017-11-24 |
| CN107387935B true CN107387935B (en) | 2023-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710835111.8A Active CN107387935B (en) | 2017-09-15 | 2017-09-15 | Compensator upstream end pipeline pressure leakage blocking device and leakage blocking method |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2085109A (en) * | 1980-10-07 | 1982-04-21 | Greenhough John Heath | Pipe Sealing Clamp |
| US5219001A (en) * | 1991-08-12 | 1993-06-15 | The Ford Meter Box Company, Inc. | Pipe repair clamp |
| JPH0914567A (en) * | 1995-06-22 | 1997-01-17 | Hiroshi Sato | Pipe line opening/closing device and pipe line restoration construction method |
| US6109829A (en) * | 1995-09-21 | 2000-08-29 | Coflexip Stena Offshore Ltd. | Pipeline pigging |
| JP2008190568A (en) * | 2007-02-01 | 2008-08-21 | Waterworks Technology Development Organization Co Ltd | Fluid shut-off method for fluid transport pipe |
| CN102635756A (en) * | 2012-04-20 | 2012-08-15 | 中国十七冶集团有限公司 | Under-water leakage blocking and repairing method of exterior line pipeline |
| CN104180125A (en) * | 2013-05-24 | 2014-12-03 | (株)正宇Coupling | Clamp for repairing pipe |
| CN205424270U (en) * | 2016-03-22 | 2016-08-03 | 牛庆平 | Pressure conduit plugging machine |
| CN207132022U (en) * | 2017-09-15 | 2018-03-23 | 济南热力集团有限公司 | A kind of compensator upstream end pipeline provided with pressure plugging device |
-
2017
- 2017-09-15 CN CN201710835111.8A patent/CN107387935B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2085109A (en) * | 1980-10-07 | 1982-04-21 | Greenhough John Heath | Pipe Sealing Clamp |
| US5219001A (en) * | 1991-08-12 | 1993-06-15 | The Ford Meter Box Company, Inc. | Pipe repair clamp |
| JPH0914567A (en) * | 1995-06-22 | 1997-01-17 | Hiroshi Sato | Pipe line opening/closing device and pipe line restoration construction method |
| US6109829A (en) * | 1995-09-21 | 2000-08-29 | Coflexip Stena Offshore Ltd. | Pipeline pigging |
| JP2008190568A (en) * | 2007-02-01 | 2008-08-21 | Waterworks Technology Development Organization Co Ltd | Fluid shut-off method for fluid transport pipe |
| CN102635756A (en) * | 2012-04-20 | 2012-08-15 | 中国十七冶集团有限公司 | Under-water leakage blocking and repairing method of exterior line pipeline |
| CN104180125A (en) * | 2013-05-24 | 2014-12-03 | (株)正宇Coupling | Clamp for repairing pipe |
| CN205424270U (en) * | 2016-03-22 | 2016-08-03 | 牛庆平 | Pressure conduit plugging machine |
| CN207132022U (en) * | 2017-09-15 | 2018-03-23 | 济南热力集团有限公司 | A kind of compensator upstream end pipeline provided with pressure plugging device |
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| CN107387935A (en) | 2017-11-24 |
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