CN107631122A - A kind of novel intelligent plugging device - Google Patents
A kind of novel intelligent plugging device Download PDFInfo
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- CN107631122A CN107631122A CN201710874191.8A CN201710874191A CN107631122A CN 107631122 A CN107631122 A CN 107631122A CN 201710874191 A CN201710874191 A CN 201710874191A CN 107631122 A CN107631122 A CN 107631122A
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- hydraulic cylinder
- pipeline
- locking
- closure
- internal diameter
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- 238000012856 packing Methods 0.000 claims abstract description 25
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 10
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 8
- 244000043261 Hevea brasiliensis Species 0.000 claims description 3
- 229920005549 butyl rubber Polymers 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims description 3
- 229920003052 natural elastomer Polymers 0.000 claims description 3
- 229920001194 natural rubber Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims 1
- 229920001971 elastomer Polymers 0.000 claims 1
- 229910052731 fluorine Inorganic materials 0.000 claims 1
- 239000011737 fluorine Substances 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 12
- 238000001125 extrusion Methods 0.000 description 8
- 208000018672 Dilatation Diseases 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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- Pipe Accessories (AREA)
Abstract
A kind of novel intelligent plugging device, mainly includes：Block assembly and power assembly, when carrying out pipeline maintenance operation, the present invention advances forward in pipe under the promotion of upstream medium, communication module receiving and plugging instruction in power assembly, control module drives micro hydraulic module, high-pressure fluid is filled with to the main hydraulic cylinder of closure assembly by high-pressure hose, makes packing circle and locking slips radial dilatation, realizes closure；After the end of job, communication module receives deblocking instruction, and control module driving micro hydraulic module draws back high-pressure fluid, and packing circle sets back with locking slips, realizes deblocking；The present invention returns to pipeline under medium promotion and receives ball end.The present invention, which has, does not destroy original pipeline, and closure is more reliable, the advantages that saving maintenance time and labour cost, and application prospect is extensive.
Description
Technical field:
The present invention relates to a kind of intelligent plugging device for Oil ＆ gas pipe service operation, and in particular to a kind of achievable pipeline
Interior self-plugging and the novel intelligent plugging device of deblocking.
Background technology:
Pipeline transportation economical rationality the most, it is that China's oil, natural gas transportation are main in oil, gas industry
Mode.Pipeline in During Process of Long-term Operation, disturbed by external force, artificial destruction, material corrosion, the factors such as defect
Influence, pipeline failure can be caused, cause huge economic loss, and have a strong impact on the production and life of the people.
Current widely used pipeline maintenance method is press and open holes blocking technology.Although press and open holes blocking technology
The on-line production reparation of oil-gas pipeline can be completed, but the closure pressure of the method is relatively low, and complex process, influence conduit running when
Between it is also longer.It is very big for pipelines in deep sea enforcement difficulty, and sealed for the inner layer pipe of double-skin duct of the seabed with heat-insulation layer
Stifled is inapplicable.
Some external companies have successfully developed a kind of intelligence envelope that can voluntarily enter horizontal high voltage closure, deblocking in pipeline
Stifled device, and be applied successfully in actual production.Technique ensure that the integrality of pipeline, reduce without the perforate on pipeline
Operation difficulty, while greatly save maintenance time and labour cost.As PSI companies of Norway (are received for 2005 by TDW companies
Purchase) smart plug series (8~48 inches of size, packing pressure 10~250bar) successfully carry out more than 240 isolation
Operation.Tecno Plug, BISTOP the and BISEP series of products of STATS Group companies can also realize remote control plugging device
Set and unseal.The operation principle of two company's intelligent plugging devices is essentially identical, and its operation principle is：Circumferentially distributed wedge shape
Inclined-plane cooperation is done between slips and shell, ring packing packing element is positioned in the compressible groove of shell；When intelligent plugging device is in pipe
After running to specified location in road, intelligent plugging device axially contracts under self power effect, by inclined-plane by plugging device
Axial shrinkage motion is changed into the radial dilatation motion of dovetail slip, so as to clamping inner-walls of duct；Axial shrinkage is compressed simultaneously can
The volume of compression groove, so as to which cartridge radially be extruded, realize the sealing between inner-walls of duct.It is complete to block operation
Cheng Hou, intelligent plugging device is axially elongated under self power effect, and dovetail slip and cartridge set back, and are pushed away in medium
Pipeline is returned under dynamic and receives ball end.But dovetail slip clamping inner-walls of duct is mechanical sealing so as to the process of sealing, for ellipse
Larger pipeline is spent, part dovetail slip can be caused to be unable to clamping inner-walls of duct, so as to which secure seal can not be realized.
Utility model patent (patent No. ZL disclosed in the country, Chinese Petroleum Univ. Zhang Shimin et al.
20082012883.3) propose a kind of intelligent plugging device in tube.Its cardinal principle is：Intelligent plugging device pushes away in its front and rear pressure difference
Dynamic lower arrival specified location, by the driving of main driving cylinder and secondary driving cylinder so that pressure bearing head, extrusion bowl and actuator disk three
Close to each other in axial direction, under the ramp effect of extrusion bowl, lock slider radial dilatation clamping tube wall, packing circle is radially expanded reality
Now block；After the completion for the treatment of operation, deblocking is realized in main driving cylinder and secondary driving cylinder counter motion, and receipts ball is returned under medium promotion
End.But the slip extrusion bowl connection used between this device pressure bearing head and actuator is insecure, and long-term use of, extrusion bowl is with performing
Loosening and gap are also easy to produce between device, between extrusion bowl and pressure bearing head, reliable sealing can not be realized.In addition, lock slider and squeeze
Enter the foreign matters such as impurity in the dovetail slideway between bowl in operation if pressing, lock slider will be caused can not to be realized along extrusion bowl
Radial dilatation, so as to can not clamping pipeline, closure is failed.
The problem of in order to overcome existing intelligent plugging device block reliability difference, the present invention propose a kind of novel intelligent closure
Device, self-plugging and deblocking when can run to specified location in the duct, and improve block reliability.With seal member
Higher with inner-walls of duct compactness, closure is more reliable, saves maintenance time and the advantages that labour cost.
The content of the invention：
Main to include closure assembly and power assembly the present invention relates to a kind of novel intelligent plugging device, closure assembly is main
Including packing circle, pressurising tire, locking hydraulic cylinder, spring, locking slips, supporting guide wheel, prevent raming, main hydraulic cylinder and hydraulic pressure
Pipeline, power assembly profile is similar to the straight panel wiper of routine, equipped with micro hydraulic module, control module in its internal cavity
And communication module；Power assembly is connected positioned at the upstream of closure assembly, closure assembly with power assembly by ball pivot in the duct
Connect；Closure assembly outer ring is from upstream to that downstream has been sequentially arranged 2~3 packing circles and 1 circle locks slips, pressurising tire cloth vertically
Packing circle lower section is placed in, and is connected by fluid pressure line with the main hydraulic cylinder inside closure assembly；Locking hydraulic cylinder is located at
Lock below slips, the piston rod external part for locking hydraulic cylinder is connected by spring with locking slips, locks the another of hydraulic cylinder
One end is connected by fluid pressure line with main hydraulic cylinder；The outlet of micro hydraulic module passes through high-pressure hose and main hydraulic cylinder phase
Even, anti-to ram positioned at closure assembly at the axle center of the outer face in downstream, supporting guide wheel has several, be evenly distributed in
On the outer face for blocking assembly both ends.
Described packing circle is annular, and annular external diameter is about 0.9 times of internal diameter of the pipeline, and internal diameter is about the 0.8 of internal diameter of the pipeline
Times, width is about 0.1 times of internal diameter of the pipeline vertically, and the material for insulating circle is oil resistivity and the preferable nonmetallic materials of resilience
Such as polyurethane, fluorubber.
Described pressurising tire is annular, and annular external diameter is about 0.8 times of internal diameter of the pipeline, and internal diameter is about the 0.7 of internal diameter of the pipeline
Times, width is about 0.1 times of internal diameter of the pipeline vertically, is provided with the interface being connected with fluid pressure line on its annular inner ring surface, fills
The material for pressing tire is the elasticity such as natural rubber or butyl rubber and the preferable material of sealing.
Described locking slips profile is thick tile shape, its concave side and the piston rod external part and bullet of locking hydraulic cylinder
Spring is connected, and there is locking screw thread its convex surface side, is evenly distributed 4~8, and the material for locking slips is closed for the higher hard of hardness
The high duty metals such as gold.
The present invention at work, advances forward, communication module receives in power assembly upstream tube under the promotion of medium
After closure instruction, control module driving micro hydraulic module, high-pressure fluid is filled with by main hydraulic cylinder by high-pressure hose, makes packing
Circle and locking slips radial dilatation, realize closure；After the end of job, communication module receives deblocking instruction, and control module is driven
Actuating miniature hydraulic module draws back high-pressure fluid, and packing circle sets back with locking slips, realizes deblocking；The present invention pushes away in medium
Pipeline is returned under dynamic and receives ball end.
Compared with existing intelligent plugging device, the device has following benefit：
(1) loosening and gap caused by coordinating between extrusion bowl, actuator and pressure bearing head three are avoided, is realized reliable close
Envelope.
(2) avoid in lock slider and extrusion bowl slideway enter lock slider caused by debris can not open completely so as to
Make the risk of closure failure.
(3) sealed compared to mechanical type, after hydraulic system, device seal member can be preferably bonded with inner-walls of duct,
Technological operation is simple, repairs short time limit, ensure that the safety and steady operation of pipeline.
Brief description of the drawings：
Fig. 1 is the composition schematic diagram of the present invention；
Fig. 2 is present invention closure process schematic；
Fig. 3 is present invention deblocking process schematic；
Fig. 4 is that closure process of the present invention blocks the partial enlarged drawing of assembly 1；
Fig. 5 is that deblocking process of the present invention blocks the partial enlarged drawing of assembly 1.
In figure：1. block assembly；2. packing circle；3. pressurising tire；4. lock hydraulic cylinder；5. spring；6. lock slips；7.
Support directive wheel；8. anti-ram；9. main hydraulic cylinder；10. fluid pressure line；11. ball pivot；12. high-pressure hose；13. power assembly；14.
Hydraulic module；15. control module；16. communication module；17. pipeline.
Embodiment:
Embodiments of the invention are elaborated below in conjunction with the accompanying drawings：The present embodiment is premised on inventive technique scheme
Under implemented, give detailed embodiment, protection scope of the present invention is not limited to following embodiments.
As shown in figure 1, the invention mainly comprises closure assembly 1 and power assembly 13, closure assembly 1 mainly includes packing circle
2nd, pressurising tire 3, locking hydraulic cylinder 4, spring 5, locking slips 6, supporting guide wheel 7, anti-ram 8, main hydraulic cylinder 9 and hydraulic tube
Road 10, the profile of power assembly 13 is similar to the straight panel wiper of routine, equipped with micro hydraulic module 14, control in its internal cavity
Module 15 and communication module 16；Power assembly 13, positioned at the upstream of closure assembly 1, blocks assembly 1 and power is total in pipeline 17
It is connected into 13 by ball pivot 11；Closure assembly 1 outer ring is from upstream to downstream and has been sequentially arranged 2~3 packing 2 Hes of circle vertically
1 circle locking slips 6, pressurising tire 3 is arranged in the lower section of packing circle 2, and passes through fluid pressure line 10 and the master inside closure assembly 1
Hydraulic cylinder 9 is connected；Hydraulic cylinder 4 is locked positioned at locking slips 6 lower section, lock the piston rod external part of hydraulic cylinder 4 by spring 5 with
Locking slips 6 is connected, and the other end of locking hydraulic cylinder 4 is connected by fluid pressure line 10 with main hydraulic cylinder 9；Micro hydraulic mould
The outlet of block 14 is connected by high-pressure hose 12 with main hydraulic cylinder 9, it is anti-ram 8 positioned at closure assembly 1 close to the outer face in downstream
Axle center at, supporting guide wheel 7 has several, is evenly distributed on the outer face at closure assembly 1 both ends.
Described packing circle 2 is annular, and annular external diameter is about 0.9 times of the internal diameter of pipeline 17, and internal diameter is about the internal diameter of pipeline 17
0.8 times, width is about 0.1 times of the internal diameter of pipeline 17 vertically, and the material of packing circle 2 is preferably non-for oil resistivity and resilience
Metal material such as polyurethane, fluorubber etc..
Described pressurising tire 3 is annular, and annular external diameter is about 0.8 times of the internal diameter of pipeline 17, and internal diameter is about the internal diameter of pipeline 17
0.7 times, width is about 0.1 times of the internal diameter of pipeline 17 vertically, is provided with its annular inner ring surface and is connected with fluid pressure line 10
Interface, the material of pressurising tire 3 is the elasticity such as natural rubber or butyl rubber and the preferable material of sealing.
The described profile of locking slips 6 is thick tile shape, the piston rod external part of its concave side and locking hydraulic cylinder 4 and
Spring 5 is connected, and there is locking screw thread its convex surface side, is evenly distributed 4~8, and the material of locking slips 6 is higher hard of hardness
The high duty metals such as matter alloy.
The course of work of the present invention is summarized as follows：
As shown in Fig. 2 when carrying out 17 maintenance activity of pipeline, the present invention is put into from the service of pipeline 17 end, the present invention is at it
Advanced forward under the promotion of medium in square tube afterwards.When that will reach precalculated position, communication module 16 receives closure instruction, control
Molding block 15 drives micro hydraulic module 14, and high-pressure fluid is filled with into main hydraulic cylinder 9 by high-pressure hose 12；Main hydraulic cylinder 9 is lived
Pressure of the plug close to the side of power assembly 13 is more than the pressure of opposite side, so as to promote piston by the stream of the opposite side of main hydraulic cylinder 9
Body is pressed into locking hydraulic cylinder 4 and pressurising tire 3 by fluid pressure line 10.
It is protruding in the presence of the incoming of fluid pressure line 10 to lock the piston of hydraulic cylinder 4, promotes locking slips 6 radially to expand
, locking screw thread is partially penetrated into the inwall of pipeline 17, and (this process needs control module 15 to control hydraulic system pressure, makes piercing depth
In the range of Industry code requirements, guarantee does not make the damage inactivation of pipeline 17), realize the position locking of the present invention.During this,
Spring 5 is changed into the state of being stretched from nature.Pressurising tire 3 radially expands in the presence of the incoming of fluid pressure line 10,
So as to promote packing 2 radial dilatations of circle, the sealing with the inwall of pipeline 17 is realized.
As shown in figure 3, after the end of job, communication module 16 receives deblocking instruction, and control module 15 drives micro hydraulic
Module 14 draws back high-pressure fluid.Now spring 5 returns to nature from the state of being stretched, and pulls locking slips 6 and pipeline
17 inwalls depart from.Packing circle 2 is radially contracted in the presence of natural resiliency, returns to original state, so as to realization device
Deblocking；The present invention returns to pipeline 17 under medium promotion and receives ball end, fulfils assignment.
The Purely mechanical that the present invention cleverly introduces hydraulic way original intelligent plugging device seals, and avoids extruding
Caused in loosening and gap, and lock slider slideway caused by coordinating between bowl, actuator and pressure bearing head three into debris
The risk that can not open completely of lock slider.The present invention has seal member and pipeline compactness higher, and closure is more reliable, section
The advantages that saving maintenance time and labour cost.
Claims (4)
- A kind of 1. novel intelligent plugging device, it is characterised in that：Main to include closure assembly (1) and power assembly (13), closure is total Mainly include packing circle (2), pressurising tire (3), locking hydraulic cylinder (4), spring (5), locking slips (6), supporting guide wheel into (1) (7), prevent raming (8), main hydraulic cylinder (9) and fluid pressure line (10), power assembly (13) profile and conventional straight panel wiper It is similar, micro hydraulic module (14), control module (15) and communication module (16) are housed in its internal cavity；Power assembly (13) It is connected in pipeline (17) positioned at the upstream of closure assembly (1), closure assembly (1) with power assembly (13) by ball pivot (11) Connect；Closure assembly (1) outer ring is from upstream to downstream and has been sequentially arranged 2~3 packing circles (2) and 1 circle locking slips vertically (6), pressurising tire (3) is arranged in below packing circle (2), and passes through fluid pressure line (10) master internal with being located at closure assembly (1) Hydraulic cylinder (9) is connected；Hydraulic cylinder (4) is locked below locking slips (6), the piston rod external part of locking hydraulic cylinder (4) leads to Cross spring (5) with locking slips (6) to be connected, the other end of locking hydraulic cylinder (4) passes through fluid pressure line (10) and main hydraulic cylinder (9) it is connected；The outlet of micro hydraulic module (14) is connected by high-pressure hose (12) with main hydraulic cylinder (9), anti-(8) position of raming In closure assembly (1) at the axle center of the outer face in downstream, supporting guide wheel (7) has several, is evenly distributed in closure On the outer face at assembly (1) both ends.
- A kind of 2. novel intelligent plugging device according to claim 1, it is characterised in that：Described packing circle (2) is annular, Annular external diameter is about 0.9 times of pipeline (17) internal diameter, and internal diameter is about 0.8 times of pipeline (17) internal diameter, and width is about managed vertically 0.1 times of road (17) internal diameter, the material of packing circle (2) is oil resistivity and the preferable nonmetallic materials of resilience such as polyurethane, fluorine Rubber etc..
- A kind of 3. novel intelligent plugging device according to claim 1, it is characterised in that：Described pressurising tire (3) is annular, Annular external diameter is about 0.8 times of pipeline (17) internal diameter, and internal diameter is about 0.7 times of pipeline (17) internal diameter, and width is about managed vertically 0.1 times of road (17) internal diameter, the interface being connected with fluid pressure line (10), the material of pressurising tire (3) are provided with its annular inner ring surface Matter is the elasticity such as natural rubber or butyl rubber and the preferable material of sealing.
- A kind of 4. novel intelligent plugging device according to claim 1, it is characterised in that：Described locking slips (6) profile For thick tile shape, its concave side is connected with the piston rod external part and spring (5) of locking hydraulic cylinder (4), and its convex surface side has Locking screw thread, 4~8 are evenly distributed, the material of locking slips (6) is the high duty metals such as the higher hard alloy of hardness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710874191.8A CN107631122B (en) | 2017-09-25 | 2017-09-25 | A kind of novel intelligent plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710874191.8A CN107631122B (en) | 2017-09-25 | 2017-09-25 | A kind of novel intelligent plugging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107631122A true CN107631122A (en) | 2018-01-26 |
| CN107631122B CN107631122B (en) | 2019-05-10 |
Family
ID=61103500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710874191.8A Expired - Fee Related CN107631122B (en) | 2017-09-25 | 2017-09-25 | A kind of novel intelligent plugging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107631122B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578852A (en) * | 2019-09-23 | 2019-12-17 | 中国石油大学(华东) | Intelligent pipeline plugging device and plugging method thereof |
| CN111120771A (en) * | 2020-01-12 | 2020-05-08 | 王伟峰 | Plugging robot in pipeline |
| CN112963653A (en) * | 2021-02-02 | 2021-06-15 | 中石化南京工程有限公司 | In-service pipeline plugging and isolating device and motor control method thereof |
| CN113700968A (en) * | 2021-08-27 | 2021-11-26 | 姚军 | Temporary plugging device for liquid pipeline |
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| EP0240851A2 (en) * | 1986-03-29 | 1987-10-14 | Siemens Aktiengesellschaft | Device for plugging a pipeline |
| CN1138375A (en) * | 1993-12-21 | 1996-12-18 | 温尼德斯制管商有限公司 | Expandable plug and control method |
| US20100313985A1 (en) * | 2009-06-12 | 2010-12-16 | Angus George Bowie | Pipeline isolation |
| 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 |
| CN202152898U (en) * | 2011-07-08 | 2012-02-29 | 宝鸡市众安消防器材有限公司 | Plug for valves and oily pipelines |
| CN102384335A (en) * | 2011-11-11 | 2012-03-21 | 哈尔滨工程大学 | Real-time plugging device for undersea oil-leaking pipelines |
| CN204005013U (en) * | 2014-08-01 | 2014-12-10 | 台州市金焰机械设备有限公司 | The leather cup block head that a kind of pipeline is used |
| CN106065980A (en) * | 2016-06-23 | 2016-11-02 | 西南石油大学 | A kind of reducing type leather cup type wiper |
-
2017
- 2017-09-25 CN CN201710874191.8A patent/CN107631122B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0240851A2 (en) * | 1986-03-29 | 1987-10-14 | Siemens Aktiengesellschaft | Device for plugging a pipeline |
| CN1138375A (en) * | 1993-12-21 | 1996-12-18 | 温尼德斯制管商有限公司 | Expandable plug and control method |
| US20100313985A1 (en) * | 2009-06-12 | 2010-12-16 | Angus George Bowie | Pipeline isolation |
| 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 |
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| CN204005013U (en) * | 2014-08-01 | 2014-12-10 | 台州市金焰机械设备有限公司 | The leather cup block head that a kind of pipeline is used |
| CN106065980A (en) * | 2016-06-23 | 2016-11-02 | 西南石油大学 | A kind of reducing type leather cup type wiper |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578852A (en) * | 2019-09-23 | 2019-12-17 | 中国石油大学(华东) | Intelligent pipeline plugging device and plugging method thereof |
| CN110578852B (en) * | 2019-09-23 | 2021-08-27 | 中国石油大学(华东) | Intelligent pipeline plugging device and plugging method thereof |
| CN111120771A (en) * | 2020-01-12 | 2020-05-08 | 王伟峰 | Plugging robot in pipeline |
| CN111120771B (en) * | 2020-01-12 | 2021-05-14 | 王伟峰 | Plugging robot in pipeline |
| CN112963653A (en) * | 2021-02-02 | 2021-06-15 | 中石化南京工程有限公司 | In-service pipeline plugging and isolating device and motor control method thereof |
| CN113700968A (en) * | 2021-08-27 | 2021-11-26 | 姚军 | Temporary plugging device for liquid pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107631122B (en) | 2019-05-10 |
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