CN108105524B - Inflatable pipeline plugging tool with pressure relief structure - Google Patents
Inflatable pipeline plugging tool with pressure relief structure Download PDFInfo
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- CN108105524B CN108105524B CN201810118856.7A CN201810118856A CN108105524B CN 108105524 B CN108105524 B CN 108105524B CN 201810118856 A CN201810118856 A CN 201810118856A CN 108105524 B CN108105524 B CN 108105524B
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- Prior art keywords
- threaded shaft
- pipeline
- pressure relief
- plug
- relief structure
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- Legal status (The legal status 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 status listed.)
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Classifications
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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
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/164—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a sealing fluid being introduced in the pipe
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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
- F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining
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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
- F16L55/10—Means for stopping flow in pipes or hoses
- F16L55/12—Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/132—Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
- F16L55/134—Means for stopping flow in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing by means of an inflatable packing
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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
- F16L55/1612—Devices for covering leaks in pipes or hoses, e.g. hose-menders by means of a plug
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses an inflatable pipeline plugging tool with a pressure relief structure, which comprises a threaded shaft, and a plug, a hollow sleeve, a pipeline connecting mechanism and the pressure relief structure which are sequentially arranged on the threaded shaft along the radial direction, wherein the threaded shaft is a threaded pipe with two open ends and a hollow inside. The designed threaded shaft is a threaded pipe with two open ends and a hollow interior, one end of the thread is provided with a plug, the other end of the thread is provided with the pressure relief structure, when the threaded shaft is used, the plug with the air bag structure seals a damaged pipeline on one hand, and when the pressure of flowing medium (such as water) in the pipeline to the plug reaches a preset safety value, the pressure relief structure is used for realizing automatic opening of the pressure relief valve, and the flowing medium is discharged out of the pipeline 13 until the internal pressure value and the external pressure value reach balance, so that the safety of sealing the pipeline is greatly ensured; and through the pipeline coupling mechanism that mainly comprises location panel and many connecting rods, realize the secondary shutoff to the pipeline, the shutoff reliability improves greatly.
Description
Technical Field
The invention relates to a pipeline plugging device, in particular to an inflatable pipeline plugging tool with a pressure relief structure.
Background
The pipeline technology in China is continuously popularized and applied along with the living needs of people and the construction of cities. Almost every industry applies to pipelines such as tap water pipelines and waste water pipelines of tap water supply systems, natural gas pipelines of natural gas supply systems, fresh water pipelines, fuel oil pipelines, boiler steam pipelines and the like on ships. When the pipeline is in use, the pipeline is often broken and damaged due to the impact of external force, the aging of the pipeline or the corrosion of conveyed media, and the leakage of conveyed media such as water, natural gas, fuel oil and the like, so that the pipeline has great potential safety hazard and great property loss. Therefore, for leakage or fracture failure of a pipeline, the broken pipeline is generally replaced in real time after the broken pipeline or the leaked pipeline is subjected to sealing and plugging through a plugging block.
At present, the traditional plugging mode mainly adopts a cork and a rag to plug a damaged pipe orifice, and the traditional plugging method has the disadvantages of complex operation, long plugging time and great manpower requirement; in addition, when the traditional pipeline plugging tool is used, the medium in the pipeline can be directly sealed in the pipeline, and as the pressure of the medium accumulated in the pipeline is gradually increased, the stress on two sides of the plugged pipeline is unbalanced when the pressure in the pipeline is accumulated to a certain extent, and when the plugging tool is flushed by the medium in the pipeline, great danger is brought to the maintenance and replacement of the pipeline, and particularly, when the pipeline conveying medium is combustible and explosive medium such as natural gas, petroleum and the like, great harm is brought.
Aiming at the technical problems, various improved pipeline plugging tools appear in the prior art, for example, chinese patent publication No. 203099206U discloses a pipeline plugging device which comprises a sphere and a pressure relief pipe, wherein a pressure relief hole is formed in the sphere, the inner end of the pressure relief pipe is fixed in the pressure relief hole, and a valve is fixedly arranged on the pressure relief pipe. The plugging device with the structure can discharge medium in the pipeline rapidly through the pressure relief hole arranged in the ball body and under the cooperation of the pressure relief pipe, and can effectively improve the safety of pipeline plugging. The following drawbacks still exist: 1) The sphere for plugging the pipeline and the inner wall of the pipeline cannot be subjected to seamless plugging, and the plugging effect still needs to be improved; 2) The pressure relief pipe serving as the pressure relief function is separated from the sphere, and if the pressure relief pipe and the sphere are connected with each other to be loose, the pressure relief function on the pipeline during plugging can be lost, and the pressure relief stability is low; 3) The ball is directly plugged on the inner wall of the pipeline, the ball and the pipeline are not provided with corresponding connecting/fixing devices, and the safety and stability of the pipeline plugging are required to be improved.
Disclosure of Invention
Aiming at the defects, the invention aims to provide the inflatable pipeline plugging tool with the pressure relief structure, which has the advantages of simple structure, rapid plugging operation and integration of plugging and pressure relief.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
The utility model provides a take air-expanding pipeline shutoff instrument of pressure release structure, includes along radial screw thread axle and installs end cap, cavity sleeve pipe, pipeline coupling mechanism and the pressure release structure on the screw thread axle in proper order, the screw thread axle is both ends opening and inside hollow screwed pipe, wherein
The plug for plugging the pipeline comprises an inflation pipe, an inflation ball valve, n air bags and n+1 circular clamping plates, wherein the circular clamping plates are sequentially and coaxially arranged on a threaded shaft, one air bag is arranged between every two adjacent circular clamping plates, the air bags and the circular clamping plates are coaxially arranged on the threaded shaft, one end of the inflation pipe is connected with the inflation ball valve, and the other end of the inflation pipe sequentially penetrates into the circular clamping plates and then is respectively communicated with the air bags, wherein n is an integer larger than or equal to 1;
The hollow sleeve penetrates into the threaded shaft, one end of the hollow sleeve is fixed on the plug, the other end of the hollow sleeve is provided with a screwing piece for fixing the plug, the screwing piece is in threaded connection with the threaded shaft, one end of the pipeline connecting mechanism can be freely connected with the pipeline, and the other end of the pipeline connecting mechanism is in threaded connection with the threaded shaft;
The pressure relief structure for properly discharging the medium in the pipeline comprises a pressure relief valve, wherein one end of the pressure relief valve is connected with a threaded shaft through a flange, and the other end of the pressure relief valve is connected with a communicating pipe.
In the above-mentioned scheme, be used for realizing that shutoff instrument and pipeline are connected together pipeline coupling mechanism can include location panel and at least 2 connecting rods, but location panel passes through fastener sliding connection on the screw spindle and location panel's cross-sectional area is greater than the cross-sectional area of end cap, the one end of connecting rod articulates at location panel's lateral wall, its other end is equipped with the pothook that is used for connecting the pipeline.
In the above scheme, further, the piece of screwing includes first adapter sleeve and two rotatory handles, and first adapter sleeve penetrates in the screw thread axle and respectively installs a screw nut in first adapter sleeve's both ends, screw nut and screw thread axle threaded connection, two rotatory handles are symmetrical respectively to be established in the both sides of screw thread axle and fix on first adapter sleeve.
In the above scheme, the fastener that adopts includes the second adapter sleeve, and the second adapter sleeve penetrates in the screw thread axle and install perpendicularly on the second adapter sleeve the location panel, respectively install one at the both ends of second adapter sleeve and screw up the nut, screw up nut and screw thread axle threaded connection.
In the above scheme, in order to enhance the stability and the connection strength of the pipeline connecting mechanism, at least 3 supporting plates can be connected between the positioning panel and the second connecting sleeve, one end of each supporting plate is fixed on the positioning panel, and the other end of each supporting plate is fixed on the second connecting sleeve.
In the above-mentioned scheme, in order to realize the intelligent control of relief valve, the relief structure still includes pressure sensor, input button and controller, pressure sensor installs in the screw spindle and is connected with the input of controller, the input button is connected with the input of controller, the output of controller is connected with the control end of relief valve and the I/O interface of controller is connected with remote monitoring host computer through wireless communication module.
The beneficial effects of the invention are as follows:
1) The plug adopted by the invention comprises n air bags and n+1 circular clamping plates, the air bags are inflated through the inflation pipe and the inflation ball valve, the air bags are extruded and deformed under the extrusion action of the front circular clamping plates and the rear circular clamping plates when the pipeline is plugged, the periphery of the air bags extend to be in seamless fit with the inner walls of the circular clamping plates and the pipeline, and a plurality of airtight and airtight plugging cavities are formed.
2) Through the pipeline coupling mechanism that mainly comprises location panel and more than 2 just evenly distributed at the connecting rod of location panel lateral part, when using, fix the flange dish on the pipeline with the pothook on the connecting rod again after the end cap is fixed, fix the location panel on the screw thread axle through the fastener at last, play the tensioning effect to installing at the epaxial location panel of screw thread through the connection of flange dish and connecting rod, realize the secondary shutoff of pipeline, the reliability of shutoff improves greatly.
3) The designed threaded shaft is a threaded pipe with openings at two ends and hollow inside, the plug is arranged at one end of the threaded shaft, the pressure relief structure is arranged at the other end of the threaded shaft, when the threaded shaft is used, the plug plugs a damaged pipeline on one hand, when the pressure of a flowing medium (such as water) in the pipeline to the plug reaches a preset safety value, the pressure relief valve is automatically opened, and the flowing medium is discharged out of the pipeline until the internal pressure value and the external pressure value reach balance, so that the safety of plugging the pipeline is greatly ensured.
Drawings
Fig. 1 is a schematic side view of the inflatable pipeline plugging tool with a pressure relief structure in use.
Fig. 2 is a schematic A-A side view of the positioning panel of fig. 1.
Fig. 3 is a schematic structural view of the pipe connection mechanism.
Fig. 4 is a schematic structural diagram of the plug.
The reference numerals in the figures are: 1. the device comprises a threaded shaft, 2, a positioning panel, 3, a plug, 3-1, a circular clamping plate, 3-2, an air bag, 4, a hollow sleeve, 5, a rotary handle, 6, a first connecting sleeve, 7, a screwing nut, 8, a second connecting sleeve, 9, a connecting rod, 10, a fixing nut, 11, a supporting plate, 12, a flange plate, 13, a pipeline, 14, a pressure relief valve, 15, a flange, 16, a communicating pipe, 17, an inflation ball valve, 18 and an inflation tube.
Detailed Description
As shown in fig. 1, the inflatable pipeline plugging tool with the pressure relief structure comprises a threaded shaft 1, and a plug 3, a hollow sleeve 4, a pipeline connecting mechanism and the pressure relief structure which are sequentially arranged on the threaded shaft 1 along the radial direction. The threaded shaft 1 is a threaded pipe with two open ends and a hollow inside, and the threaded pipe is specifically a threaded steel pipe.
As shown in FIG. 4, the plug 3 comprises an inflation tube 18, an inflation ball valve 17, n air bags 3-2 and n+1 circular clamping plates 3-1, wherein n is an integer greater than or equal to 1. In this embodiment, n=2, namely, 2 airbags 3-2 and 3 circular splints 3-1, and a through hole for the threaded shaft 1 to penetrate is formed in the center of each circular splints 3-1. The circular clamping plates 3-1 are sequentially and coaxially mounted on the threaded shaft 1 and one of the air bags 3-2 is mounted between every two adjacent circular clamping plates 3-1. The air bags 3-2 and the circular clamping plates 3-1 are coaxially arranged on the threaded shaft 1, one end of the air inflation pipe 18 is connected with the air inflation ball valve 17, and the other end of the air inflation pipe sequentially penetrates through the circular clamping plates 3-1 and then is sequentially communicated with the air bags 3-2. In this embodiment, the diameters of the circular clamping plates 3-1 are identical, and are 0.5-1.5mm smaller than the inner diameter of the pipeline 13 to be plugged. The adopted air bag 3-2 is made of a soft rubber air bag 3-2 with extensibility.
The hollow sleeve 4 penetrates into the threaded shaft 1, one end of the hollow sleeve 4 is fixed on the plug 3, the other end of the hollow sleeve 4 is provided with a screwing piece for fixing the plug 3, and the screwing piece is in threaded connection with the threaded shaft 1. The other side of the plug 3 opposite to the hollow pipe 13 is provided with a fixing nut 10 for fixing the plug 3 on the threaded shaft 1 in cooperation with a screwing piece. The screwing piece comprises a first connecting sleeve 6 and two rotary handles 5, the first connecting sleeve 6 penetrates into the threaded shaft 1, a tightening nut 7 is respectively arranged at two ends of the first connecting sleeve 6, the tightening nut 7 is in threaded connection with the threaded shaft 1, and the two rotary handles 5 are symmetrically arranged at two sides of the threaded shaft 1 and fixed on the first connecting sleeve 6.
One end of the pipe connecting mechanism can be freely connected to the pipe 13, and the other end of the pipe connecting mechanism is in threaded connection with the threaded shaft 1. As shown in fig. 2 and 3, the pipe connection mechanism comprises a positioning panel 2 and at least 2 connecting rods 9. The positioning panel 2 is slidably connected to the threaded shaft 1 through a fastener, and the cross-sectional area of the positioning panel 2 is larger than that of the choke plug 3. The positioning panel 2 is a round solid steel plate. One end of the connecting rod 9 is hinged to the side wall of the positioning panel 2, and the other end of the connecting rod is provided with a clamping hook for connecting a pipeline 13. At least 3 support plates 11 are connected between the positioning panel 2 and the second connecting sleeve 8. In this embodiment, the number of the connecting rods 9 is 4, and the connecting rods are installed in a cross structure with the threaded shaft 1 as the center. One end of each supporting plate 11 is fixed to the positioning panel 2, and the other end thereof is fixed to the second connecting sleeve 8.
The fastener comprises a second connecting sleeve 8, the second connecting sleeve 8 penetrates into the threaded shaft 1, the positioning panel 2 is vertically arranged on the second connecting sleeve 8, two ends of the second connecting sleeve 8 are respectively provided with a tightening nut 7, and the tightening nuts 7 are in threaded connection with the threaded shaft 1.
The pressure relief structure comprises a pressure relief valve, one end of the pressure relief valve is connected with the threaded shaft 1 through a flange 15, and the other end of the pressure relief valve is connected with a communicating pipe 16. Namely, the pressure relief structure and the plug 3 are both arranged on the threaded shaft 1, and the pressure relief valve is specifically a stop valve. For realizing intelligent start and stop of the control valve and setting safe starting values for conveying media in different pipelines 13, the pressure relief structure further comprises a controller, an input key and a pressure sensor, wherein the pressure sensor is arranged in the threaded shaft 1 and is connected with the input end of the controller, the input key is connected with the controller, the output end of the controller is connected with the control end of the pressure relief valve, and an I/O interface of the controller is connected with a remote monitoring upper computer through a wireless communication module.
As shown in fig. 1, the present invention is operative:
1) The plug 3 is extended into the pipeline 13, and simultaneously, the air bag 3-2 is inflated through the inflation ball valve 17 and the inflation pipe 18;
2) Then pushing the hollow sleeve 4 to move the plug 3 to a proper position, rotating the rotary handle 5, screwing the tightening nut 7 on the threaded shaft 1 to rotate, pushing the hollow sleeve 4 to sequentially press all the round clamping plates 3-1 on the plug 3 forwards, sequentially stressing all the round clamping plates 3-1, forward extruding the inflated air bags 3-2, and under the extrusion action of the front and rear round clamping plates 3-1, deforming all the air bags 3-2, extending all around, tightly fitting the inner space of each round clamping plate 3-1 and the pipeline 13 to form a sealing cavity with 2 air tightness, and finally screwing the tightening nut 7 on the rotary handle 5;
3) The clamping hooks on the connecting rod 9 are hooked on the flange plate 12 fixed on the pipeline 13, and the positioning panel 2 can be fixed by tightening the tightening nuts 7 on the second connecting sleeve 8, so that the plugging operation can be completed. In the process of plugging the pipeline 13 by the plug 3, when the pressure of the flowing medium (such as water) in the pipeline 13 on the plug 3 reaches a preset safety value, the pressure release valve is automatically opened, and the flowing medium is discharged out of the pipeline 13 until the internal and external pressure values reach balance, and the pressure release valve is automatically closed.
The above description is for the purpose of illustrating the embodiments of the present invention and is not to be construed as limiting the invention, but is intended to cover all modifications, equivalents, improvements and alternatives falling within the spirit and principle of the invention.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810118856.7A CN108105524B (en) | 2018-02-06 | 2018-02-06 | Inflatable pipeline plugging tool with pressure relief structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810118856.7A CN108105524B (en) | 2018-02-06 | 2018-02-06 | Inflatable pipeline plugging tool with pressure relief structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108105524A CN108105524A (en) | 2018-06-01 |
| CN108105524B true CN108105524B (en) | 2024-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810118856.7A Active CN108105524B (en) | 2018-02-06 | 2018-02-06 | Inflatable pipeline plugging tool with pressure relief structure |
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| CN (1) | CN108105524B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736817B (en) * | 2018-11-28 | 2020-09-01 | 安徽铜都流体科技股份有限公司 | Plugging control method based on low-frequency electromagnetic signal communication and intelligent plugging ball positioning |
| CN110375144B (en) * | 2019-08-31 | 2024-07-05 | 日照钢铁控股集团有限公司 | An air bag device for quickly and effectively cutting off the power medium in the isolation pipeline |
| CN112145860B (en) * | 2020-09-22 | 2022-05-20 | 河北润达石化工程建设有限公司 | Natural gas pipeline overhauling and plugging device and using method |
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| CN102109080A (en) * | 2010-11-24 | 2011-06-29 | 太原理工大学 | Inner plugging air bag for leakage of risk source pipeline and quick plugging method thereof |
| CN204459598U (en) * | 2014-12-31 | 2015-07-08 | 中国石油天然气股份有限公司 | pressure relief plug |
| CN205534817U (en) * | 2016-03-21 | 2016-08-31 | 中国石油天然气股份有限公司 | Pipeline plugging device |
| WO2016197401A1 (en) * | 2015-06-08 | 2016-12-15 | 刘富生 | Inflatable tent valve and inflatable tent connection structure |
| CN206175936U (en) * | 2015-12-22 | 2017-05-17 | 文登蓝岛建筑工程有限公司 | Multi -level tubular says capping |
| CN106764238A (en) * | 2017-02-24 | 2017-05-31 | 江苏海事职业技术学院 | A kind of self-locking pipeline port is met an urgent need plugging device |
| CN107131387A (en) * | 2017-05-09 | 2017-09-05 | 中北大学 | Air bag and guiding device are blocked in a kind of pipeline based on self-locking |
| CN207935622U (en) * | 2018-02-06 | 2018-10-02 | 钦州学院 | Air heave type plugging pipelines tool with pressure relief |
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2018
- 2018-02-06 CN CN201810118856.7A patent/CN108105524B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109080A (en) * | 2010-11-24 | 2011-06-29 | 太原理工大学 | Inner plugging air bag for leakage of risk source pipeline and quick plugging method thereof |
| CN204459598U (en) * | 2014-12-31 | 2015-07-08 | 中国石油天然气股份有限公司 | pressure relief plug |
| WO2016197401A1 (en) * | 2015-06-08 | 2016-12-15 | 刘富生 | Inflatable tent valve and inflatable tent connection structure |
| CN206175936U (en) * | 2015-12-22 | 2017-05-17 | 文登蓝岛建筑工程有限公司 | Multi -level tubular says capping |
| CN205534817U (en) * | 2016-03-21 | 2016-08-31 | 中国石油天然气股份有限公司 | Pipeline plugging device |
| CN106764238A (en) * | 2017-02-24 | 2017-05-31 | 江苏海事职业技术学院 | A kind of self-locking pipeline port is met an urgent need plugging device |
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| CN207935622U (en) * | 2018-02-06 | 2018-10-02 | 钦州学院 | Air heave type plugging pipelines tool with pressure relief |
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| CN108105524A (en) | 2018-06-01 |
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