CN108061216B - Pipeline plugging tool with pressure relief structure - Google Patents
Pipeline plugging tool with pressure relief structure Download PDFInfo
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- CN108061216B CN108061216B CN201810118415.7A CN201810118415A CN108061216B CN 108061216 B CN108061216 B CN 108061216B CN 201810118415 A CN201810118415 A CN 201810118415A CN 108061216 B CN108061216 B CN 108061216B
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- Prior art keywords
- pipeline
- threaded shaft
- pressure relief
- plug
- relief structure
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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
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/105—Closing devices introduced radially into the pipe or hose
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The utility model discloses a pipeline plugging tool with a pressure relief structure, which comprises a threaded shaft, a plug, a hollow sleeve, a pipeline connecting mechanism and the pressure relief structure, wherein the plug, the hollow sleeve, the pipeline connecting mechanism and the pressure relief structure are sequentially arranged on the threaded shaft, and the threaded shaft is a threaded pipe with two open ends and a hollow interior. The designed threaded shaft is a threaded pipe with two open ends and a hollow interior, one end of the threaded shaft is provided with a plug, and the other end of the threaded shaft is provided with the pressure relief structure; and through the pipeline coupling mechanism that mainly comprises location panel and many connecting rods, realized the secondary shutoff, the shutoff reliability improves greatly.
Description
Technical Field
The utility model relates to a pipeline plugging device, in particular to a 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 utility model aims to provide the 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 utility model is realized by the following technical scheme:
pipeline plugging tool with pressure relief structure, which comprises a threaded shaft and a plug, a hollow sleeve, a pipeline connecting mechanism and a pressure relief structure which are sequentially arranged on the threaded shaft along the radial direction, wherein the threaded shaft is a threaded pipe with openings at two ends and hollow inside, and the threaded shaft is provided with a threaded hole, a hollow sleeve and a pipeline connecting mechanism
The plug for plugging the inner wall of the pipeline comprises n sealing gaskets and n+1 circular clamping plates, wherein the circular clamping plates are sequentially and coaxially arranged on a threaded shaft, one sealing gasket is arranged between every two adjacent circular clamping plates, the sealing gaskets and the circular clamping plates are coaxially arranged on the threaded shaft, and each sealing gasket is provided with an annular groove matched with the circular clamping plates in size, wherein n is an integer which is more 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.
The beneficial effects of the utility model are as follows:
1) The plug adopted by the utility model comprises n sealing gaskets and n+1 circular clamping plates, when a pipeline is plugged, the hollow sleeve is pushed to extrude the plug and the plug is fixed on the threaded shaft by adopting the rotating piece, the sealing gaskets are seamlessly attached to the circular clamping plates and the inner wall of the pipeline under the extrusion action of the front circular clamping plates and the rear circular clamping plates, so that a plurality of airtight and airtight plugging cavities are formed, and the sealing device has the characteristics of simple structure, convenience in operation and remarkable plugging effect.
2) Through the pipeline coupling mechanism that mainly comprises but the locating panel of sliding connection on the screw axis and at least 2 evenly distributed are at locating panel lateral part, when using, fix the flange dish on the pipeline with the pothook on the connecting rod after again with the end cap is fixed, fix locating panel on the screw axis through the fastener at last, realize the secondary shutoff of pipeline at flange dish and connecting rod to locating panel's taut effort like this, the shutoff reliability 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 a 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.
Fig. 5 is a schematic side view of a seal gasket.
Fig. 6 is a schematic top view of fig. 5.
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, a sealing gasket, 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 and an annular groove.
Detailed Description
As shown in fig. 1, the pipeline plugging tool with the pressure relief structure comprises a threaded shaft 1, a plug 3, a hollow sleeve 4, a pipeline 13 connecting mechanism and the pressure relief structure, wherein the plug 3, the hollow sleeve 4, the pipeline 13 connecting mechanism and the pressure relief structure 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, 5 and 6, the plug 3 used comprises n sealing washers 3-2 and n+1 circular clamping plates 3-1, wherein n is an integer not less than 1. In this embodiment, n=2, namely, 2 sealing washers 3-2 and 3 circular clamping plates 3-1, and a through hole for the threaded shaft 1 to penetrate is formed in the center of each circular clamping plate 3-1. The circular clamping plates 3-1 are coaxially mounted on the threaded shaft 1 in turn and one of the sealing washers 3-2 is mounted between each two adjacent circular clamping plates 3-1. The sealing washers 3-2 and the circular clamping plates 3-1 are coaxially arranged on the threaded shaft 1, and annular grooves 17 matched with the circular clamping plates 3-1 in size are formed in each sealing washer 3-2. In this embodiment, the inner diameter of the annular groove 17 is 0.5-1.5mm smaller than the diameter of the circular clamping plate 3-1. The diameter of each circular clamping plate 3-1 is consistent, and is 0.5-1.5mm smaller than the inner diameter of the pipeline 13 to be blocked. The sealing gasket 3-2 is a soft rubber ring with solid structure and 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 pipeline 13 connecting mechanism can be freely connected to the pipeline 13, and the other end of the pipeline 13 connecting mechanism is in threaded connection with the threaded shaft 1. As shown in fig. 2 and 3, the pipe 13 connecting 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 supporting plates 11 is 4, and the supporting plates are installed in a cross structure with the threaded shaft 1 as a 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 output end of the controller is connected with the control end of the pressure relief valve, and the input key is connected with the controller.
As shown in fig. 1, the present utility model is operative:
1) Extending the plug 3 into the pipeline 13;
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 pressing the sealing gaskets 3-2, and under the extrusion action of the front and rear round clamping plates 3-1, deforming all the sealing gaskets 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 15 disc 12 fixed on the pipeline 13, and the positioning panel 2 can be fixed by tightening the tightening nut 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 utility model and is not to be construed as limiting the utility model, but is intended to cover all modifications, equivalents, improvements and alternatives falling within the spirit and principle of the utility model.
Claims (5)
1. Pipeline shutoff instrument of taking pressure release structure, its characterized in that: the device comprises a threaded shaft (1) along the radial direction, and a plug (3), a hollow sleeve (4), a pipeline (13) connecting mechanism and a pressure relief structure which are sequentially arranged on the threaded shaft (1), wherein the threaded shaft (1) is a threaded pipe with two open ends and a hollow interior;
the plug (3) comprises n sealing gaskets (3-2) and n+1 circular clamping plates (3-1), the circular clamping plates (3-1) are sequentially and coaxially arranged on a threaded shaft (1), one sealing gasket (3-2) is arranged between every two adjacent circular clamping plates (3-1), the sealing gaskets (3-2) and the circular clamping plates (3-1) are coaxially arranged on the threaded shaft (1), and each sealing gasket (3-2) is provided with an annular groove (17) matched with the circular clamping plates (3-1) in size, wherein n is an integer more than or equal to 1;
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 is provided with a screwing piece for fixing the plug (3), the screwing piece is in threaded connection with the threaded shaft (1), one end of the pipeline (13) connecting mechanism can be freely connected with the pipeline (13), and the other end of the pipeline (13) connecting mechanism is 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).
2. The pipeline plugging tool with a pressure relief structure according to claim 1, wherein: the pipeline (13) connecting mechanism comprises a positioning panel (2) and at least 2 connecting rods (9), wherein the positioning panel (2) is slidably connected to the threaded shaft (1) through fasteners, the cross section area of the positioning panel (2) is larger than that of the plug (3), and one end of each connecting rod (9) is hinged to the side wall of the corresponding positioning panel (2), and a clamping hook for connecting the pipeline (13) is arranged at the other end of each connecting rod.
3. The pipeline plugging tool with a pressure relief structure according to claim 1 or 2, wherein: the screwing piece comprises a first connecting sleeve (6) and two rotary handles (5), wherein the first connecting sleeve (6) penetrates into the threaded shaft (1), two ends of the first connecting sleeve (6) are respectively provided with a screwing nut (7), the screwing nuts (7) are in threaded connection with the threaded shaft (1), and the two rotary handles (5) are symmetrically arranged on two sides of the threaded shaft (1) respectively and are fixed on the first connecting sleeve (6).
4. The pipeline plugging tool with a pressure relief structure according to claim 2, wherein: the fastener comprises a second connecting sleeve (8), wherein the second connecting sleeve (8) penetrates into the threaded shaft (1), the locating 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).
5. The pipeline plugging tool with a pressure relief structure according to claim 2, wherein: at least 3 supporting plates (11) are connected between the positioning panel (2) and the second connecting sleeve (8), one end of each supporting plate (11) is fixed on the positioning panel (2), and the other end of each supporting plate is fixed on the second connecting sleeve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810118415.7A CN108061216B (en) | 2018-02-06 | 2018-02-06 | Pipeline plugging tool with pressure relief structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810118415.7A CN108061216B (en) | 2018-02-06 | 2018-02-06 | Pipeline plugging tool with pressure relief structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108061216A CN108061216A (en) | 2018-05-22 |
| CN108061216B true CN108061216B (en) | 2023-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810118415.7A Active CN108061216B (en) | 2018-02-06 | 2018-02-06 | Pipeline plugging tool with pressure relief structure |
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| Country | Link |
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| CN (1) | CN108061216B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108716582B (en) * | 2018-07-28 | 2024-02-23 | 湖南大麓科技有限公司 | Device and method for repairing local collapse of pipeline |
| CN111189584B (en) * | 2020-01-13 | 2022-03-22 | 江苏集萃有机光电技术研究所有限公司 | Vacuum plugging mechanism, vacuum plugging method and vacuum testing equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0259518A2 (en) * | 1986-09-09 | 1988-03-16 | Franz Janssen | Method for repairing underground pipelines |
| CN201810932U (en) * | 2010-04-27 | 2011-04-27 | 新疆三叶管道技术有限责任公司 | Release type plugging device |
| CN205173847U (en) * | 2015-11-19 | 2016-04-20 | 重庆三英管道设备有限公司 | Plugging device with small transfer line |
| CN205534817U (en) * | 2016-03-21 | 2016-08-31 | 中国石油天然气股份有限公司 | Pipeline plugging device |
| CN206221891U (en) * | 2016-11-15 | 2017-06-06 | 中建八局第四建设有限公司 | A kind of duct closing type device |
| CN107314187A (en) * | 2017-08-31 | 2017-11-03 | 张辉 | A kind of pipeline sealing device |
| CN207935607U (en) * | 2018-02-06 | 2018-10-02 | 钦州学院 | Plugging pipelines tool with pressure relief |
-
2018
- 2018-02-06 CN CN201810118415.7A patent/CN108061216B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0259518A2 (en) * | 1986-09-09 | 1988-03-16 | Franz Janssen | Method for repairing underground pipelines |
| CN201810932U (en) * | 2010-04-27 | 2011-04-27 | 新疆三叶管道技术有限责任公司 | Release type plugging device |
| CN205173847U (en) * | 2015-11-19 | 2016-04-20 | 重庆三英管道设备有限公司 | Plugging device with small transfer line |
| CN205534817U (en) * | 2016-03-21 | 2016-08-31 | 中国石油天然气股份有限公司 | Pipeline plugging device |
| CN206221891U (en) * | 2016-11-15 | 2017-06-06 | 中建八局第四建设有限公司 | A kind of duct closing type device |
| CN107314187A (en) * | 2017-08-31 | 2017-11-03 | 张辉 | A kind of pipeline sealing device |
| CN207935607U (en) * | 2018-02-06 | 2018-10-02 | 钦州学院 | Plugging pipelines tool with pressure relief |
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| CN108061216A (en) | 2018-05-22 |
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