CN201351789Y - Sealing plug capable of expanding at pipe opening - Google Patents

Sealing plug capable of expanding at pipe opening Download PDF

Info

Publication number
CN201351789Y
CN201351789Y CNU2008202320659U CN200820232065U CN201351789Y CN 201351789 Y CN201351789 Y CN 201351789Y CN U2008202320659 U CNU2008202320659 U CN U2008202320659U CN 200820232065 U CN200820232065 U CN 200820232065U CN 201351789 Y CN201351789 Y CN 201351789Y
Authority
CN
China
Prior art keywords
pipe
pawl
bloated
mouth
sealing
Prior art date
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.)
Expired - Fee Related
Application number
CNU2008202320659U
Other languages
Chinese (zh)
Inventor
刘涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dalian Locomotive and Rolling Stock Co Ltd of China CNR Corp Ltd
Original Assignee
Dalian Locomotive and Rolling Stock Co Ltd of China CNR Corp Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dalian Locomotive and Rolling Stock Co Ltd of China CNR Corp Ltd filed Critical Dalian Locomotive and Rolling Stock Co Ltd of China CNR Corp Ltd
Priority to CNU2008202320659U priority Critical patent/CN201351789Y/en
Application granted granted Critical
Publication of CN201351789Y publication Critical patent/CN201351789Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model relates to a sealing plug, in particular to a sealing plug capable of expanding at a pipe opening, which is characterized by comprising a shaft (1). One end of the shaft (1) is provided with a stopper (10) while the other end is in threaded connection with a lock nut (3), a gasket (9), a sealing sleeve (8), a conical expanded core (7) and an extrusion gasket (4) are sequentially sleeved between the stopper (10) and the lock nut (3) on the shaft (1), an expanded claw (2) is disposed between the extrusion gasket (4) and the conical expanded core (7), and an inclined plane arranged on the expanded claw (2) is engaged with the conical surface on the outside surface of the conical expanded core (7). The sealing plug capable of expanding at a pipe opening is fine in sealing effects, wide in usage range, strong in maintenance performance, low in costs, safe and reliable and applicable to high-pressure pipelines.

Description

Mouth of pipe Expansion sealing is stifled
Technical field
It is stifled that the utility model relates to a kind of sealing, and particularly a kind of mouth of pipe Expansion sealing is stifled.
Background technique
In the pipework technology, at complete or section of tubing system where necessary, need the uncovered pipeline of shutoff, with the leak test of finishing system or pipe fitting, detect some component/portion's performance of subsystems or isolate some component/part system as required.Generally, can be according to the form of mouth of pipe link, adopt the plugging structure of being furnished with corresponding with it structure, as the blind plugging of inside/outside screw thread, have the flange of blind hole etc.And in engineering practice, it is the light pipe that does not weld, processes and assemble any type of linkage structure that most applications needs the position of shutoff.In addition along with the fast development of pipeline connection technology, a large amount of various nothings convenient to disassembly, rubber seal that sealability is superior are threaded, non-welded quick coupling is applied in engineering practice.This practical situations is that the blocking technology of light pipe proposes requirements at the higher level naturally.
The mouth of pipe shutoff of traditional light pipe mainly contains following several mode:
(1) welding/cutting
The mouth of pipe adopts welding manner sealing or welding to have the plugging structure of sealing configuration, cuts after test is finished, and returns to the original situation of the mouth of pipe.This mode complex process, the welding process requirement height damages part to be measured, can not be applied to the demanding situation of highi degree of accuracy or turbidity test, recovers mouth of pipe original state difficulty after test is finished.Belong to original, extensive process means.
(2) shutoff of rubber or plastic tube
Adopt hose band that rubber or plastic tube are connected with treating the adapter mouth, and also can be with mouth of pipe shutoff with the other end sealing, but be subjected to the strength of materials restriction of used rubber or plastic tube and the structural limitations of hose band, can only be applied to the situation that the system pressure utmost point supports, limit the application of this structure greatly.
(3) nose end face seal
The nose end face seal is by the external force of the vertical mouth of pipe sealing surface rubber parts of sufficient intensity directly to be pressed to get lodged on the mouth of pipe.Usually need manufacture and design the special application of force and plugging structure, must survey pipe fitting by fixing belt simultaneously, generally be applicable to independent pipe, be not suitable for pipe-line system, it is little to be suitable for the caliber scope in addition; The plugging technology equipment is complicated, the expense height.
(4) employing is treated the process duct joint that the Tube to tube fittings structure is identical with the mouth of pipe
If waiting to take over what mouthful adopt is that the nothing of rubber seal is threaded, non-welded quick coupling, can design and produce sealing configuration and be connected in the opposite side of pipe joint, shortcoming is leakage test or other test that can not be higher than system works pressure, can only be applied to wait to take over mouth in addition the occasion of rapid pipe joint is housed, process duct joint expense height also is to limit one of its factor of applying.
Summary of the invention
The purpose of this utility model provides a kind of good sealing effect, stifled applicable to pressure duct, using scope is wide, safe and reliable, maintainability is strong, cost is low mouth of pipe Expansion sealing, overcomes the deficiencies in the prior art.
Mouth of pipe Expansion sealing of the present utility model is stifled, it is characterized in that: comprise axle 1, one end of axle 1 is provided with block piece 10, the other end locking nut 3 that has been threaded, between block piece 10 and locking nut 3, be set with pad 9, stuffing box gland 8, the bloated core 7 of taper, dummy block 4 on the axle 1 successively, be provided with the pawl 2 that expands between dummy block 4 and the bloated core 7 of taper, the conical surface that the pawl 2 that expands is provided with inclined-plane and bloated core 7 appearances of taper matches.
Mouth of pipe Expansion sealing of the present utility model is stifled, and wherein said bloated pawl 2 is three, and evenly distributes on circumference, is wound with spring 5 in the groove of the outer circumference direction setting of each bloated pawl 2.
Mouth of pipe Expansion sealing of the present utility model is stifled compared with prior art, has following advantage:
(1) good seal performance: as a kind of endoporus sealing configuration, the material of reasonable selection stuffing box gland, the work area (sectional is made several sections) of increasing stuffing box gland can increase substantially sealability as required.
(2) be suitable for hyperbaric environment:, make the Security of shutoff improve greatly owing to adopted the bloated pawl/cored structure that expands.For further improving its Security, can increase the quantity of the bloated pawl/cored structure that expands as required.Also mean simultaneously the extremely desirable dissipate-swelling pawl in workplace of the low pressure/cored structure that expands, and adopt the sealing function component separately.Adopt this design philosophy, can reach 1000kgf/m in theory 2More than.
(3) Applicable scope is big: be 20mm-200mm according to the shutoff of this principle design manufacturing ips scope applicatory in theory, in addition bigger.
(4) have more Security: under the situation of correct assembling, pressure acts on pipe plug in the pipeline, and the bloated pawl of the pipe plug/cored structure that expands makes pipe plug be clamped in inner tube wall, prevents that pipe plug from being launched out under fluid pressure action in pipeline, has more Security.
(5) maintainable high: seal configuration is simple, and it is little to wear and tear.Sealing and the bloated pawl/cored structure that expands is replaceable, is easy to safeguard.
(6) good economy performance: each component structural is simple, and quantity is few, and spare part in common use is many, and manufacturing expense is cheap.
(7) possess functional expansionary: can be made into the blind plugging shutoff mouth of pipe, also can be made into the middle perforate of test, the technology that connects test element is stifled.But the shutoff mouth of pipe not only, but also similar structure such as shutoff pressurized container.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
As shown in Figure 1: 1 is axle, and an end of axle 1 is provided with block piece 10, and block piece 10 can be nut and is threaded with axle 1.Axle 1 the other end locking nut 3 that has been threaded.
Between block piece 10 and locking nut 3, be set with pad 9, stuffing box gland 8, the bloated core 7 of taper, dummy block 4 on the axle 1 successively.Stuffing box gland 8 is functional parts of sealing, is installed in pad 9 and taper and expands between the core 7, and when locking nut 3 screws in, the core 7 crush seals cover 8 that expands, the stuffing box gland of being made by industrial chemicals 8 expands, and realizes the purpose of blocking pipe.
Be provided with the pawl 2 that expands between dummy block 4 and the bloated core 7 of taper, the conical surface that the pawl 2 that expands is provided with inclined-plane and bloated core 7 appearances of taper matches.The pawl 2 that wherein expands is three, and evenly distributes on circumference, is wound with spring 5 in the groove of the outer circumference direction setting of each bloated pawl 2.Bloated core 7 structures of pawl 2/ taper of expanding are the locking mechanism of pipe plug.Taper fit between the bloated core 7 of bloated pawl 2 and taper, bloated pawl 2 external diameters that make three circumference be provided with increase, and along with the screw-in of locking nut 3, the anti-skidding outer surface of the pawl 2 that expands holds out against tube wall, thereby pipe plug safety is fixed in the mouth of pipe.Spring 5 feasible pawl 2 self-returns that expand during locking nut 3 revolutions.
The material of stuffing box gland 8 is rubber (fluorine rubber, silicone rubber and ethylene propylene diene rubber etc.) or nylon etc.
During use, this device inserted treat in pipe 6 terminations of shutoff, screw-in/back-out locking nut 3 just can reach the purpose of shutoff and dismounting.

Claims (2)

1, a kind of mouth of pipe Expansion sealing is stifled, it is characterized in that: comprise axle (1), one end of axle (1) is provided with block piece (10), the other end locking nut (3) that has been threaded, be set with pad (9), stuffing box gland (8), taper expand core (7), dummy block (4) between block piece (10) and the locking nut (3) successively being positioned on the axle (1), be provided with bloated pawl (2) between dummy block (4) and the bloated core (7) of taper, the conical surface that the pawl (2) that expands is provided with inclined-plane and bloated core (7) appearance of taper matches.
2, mouth of pipe Expansion sealing according to claim 1 is stifled, and it is characterized in that: described bloated pawl (2) is three, and evenly distributes on circumference, is wound with spring (5) in the groove of the outer circumference direction setting of each bloated pawl (2).
CNU2008202320659U 2008-12-25 2008-12-25 Sealing plug capable of expanding at pipe opening Expired - Fee Related CN201351789Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008202320659U CN201351789Y (en) 2008-12-25 2008-12-25 Sealing plug capable of expanding at pipe opening

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008202320659U CN201351789Y (en) 2008-12-25 2008-12-25 Sealing plug capable of expanding at pipe opening

Publications (1)

Publication Number Publication Date
CN201351789Y true CN201351789Y (en) 2009-11-25

Family

ID=41375176

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008202320659U Expired - Fee Related CN201351789Y (en) 2008-12-25 2008-12-25 Sealing plug capable of expanding at pipe opening

Country Status (1)

Country Link
CN (1) CN201351789Y (en)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101975327A (en) * 2010-10-21 2011-02-16 中北大学 Mechanical type pipeline leak-stopping device capable of quickly increasing diameter
CN102242853A (en) * 2010-05-12 2011-11-16 中国石油天然气集团公司 Temporary plugging device for extrusion type pipeline
CN102359602A (en) * 2011-09-08 2012-02-22 中钢集团吉林机电设备有限公司 Hollow pipe shutoff valve for hollow electrode
RU2451866C1 (en) * 2010-11-08 2012-05-27 Открытое акционерное общество "Корпорация "Московский институт теплотехники" (ОАО "Корпорация "МИТ") Sealing device
CN102809018A (en) * 2012-08-14 2012-12-05 张家港华东锅炉有限公司 Pipe orifice seal device for pipe hydraulic test
CN103016899A (en) * 2012-12-14 2013-04-03 广州中船黄埔造船有限公司 Pipe sealing device
CN103047509A (en) * 2012-12-24 2013-04-17 中国石油大学(北京) Locking device of stopper inside pipe
CN103836298A (en) * 2012-11-22 2014-06-04 中国石油天然气股份有限公司 Pipeline isolator
CN103953819A (en) * 2014-03-12 2014-07-30 祖宝华 Quick stopper for long-distance pipeline orifice
CN104197013A (en) * 2014-09-12 2014-12-10 上海电气核电设备有限公司 Small-connecting-pipe mechanical sealing structure and sealing method
CN104568405A (en) * 2014-12-25 2015-04-29 中国石油天然气集团公司 Slips strength test device and system
CN104565662A (en) * 2014-12-22 2015-04-29 洛阳能源密封件有限公司 Soft sealing and blocking device for pipeline end part
CN105067195A (en) * 2015-09-14 2015-11-18 中船黄埔文冲船舶有限公司 Pipeline water filling test sealing isolation device and application method thereof
CN105156673A (en) * 2015-09-14 2015-12-16 江西洪都航空工业集团有限责任公司 Big aperture blanking cap
CN105546269A (en) * 2016-02-23 2016-05-04 南阳市鼎钢实业有限公司 Quickly assembled pipeline sealing device
CN106051373A (en) * 2016-08-03 2016-10-26 无锡隆盛科技股份有限公司 Sealing device with stepless adjustment type outside diameter
GB2555219A (en) * 2016-10-14 2018-04-25 Mcgarian Bruce Apparatus for sealing a casing
CN110094594A (en) * 2018-01-31 2019-08-06 上海宝冶集团有限公司 Plug for pipeline pressure test
CN110576090A (en) * 2019-08-26 2019-12-17 四川航天长征装备制造有限公司 Pipe orifice sealing device
CN111530632A (en) * 2020-05-15 2020-08-14 浙江浩普环保工程有限公司 Vertical type shaking-stopping device for lower end of wet electric cathode wire
CN111577894A (en) * 2020-05-27 2020-08-25 福建宁德核电有限公司 Prevent foreign matter plugging device suitable for multiple bore
CN112628519A (en) * 2019-10-08 2021-04-09 中国石油化工股份有限公司 High-pressure self-tightening type pipeline plug and application thereof

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102242853A (en) * 2010-05-12 2011-11-16 中国石油天然气集团公司 Temporary plugging device for extrusion type pipeline
CN101975327B (en) * 2010-10-21 2012-08-08 中北大学 Mechanical type pipeline leak-stopping device capable of quickly increasing diameter
CN101975327A (en) * 2010-10-21 2011-02-16 中北大学 Mechanical type pipeline leak-stopping device capable of quickly increasing diameter
RU2451866C1 (en) * 2010-11-08 2012-05-27 Открытое акционерное общество "Корпорация "Московский институт теплотехники" (ОАО "Корпорация "МИТ") Sealing device
CN102359602A (en) * 2011-09-08 2012-02-22 中钢集团吉林机电设备有限公司 Hollow pipe shutoff valve for hollow electrode
CN102809018A (en) * 2012-08-14 2012-12-05 张家港华东锅炉有限公司 Pipe orifice seal device for pipe hydraulic test
CN103836298A (en) * 2012-11-22 2014-06-04 中国石油天然气股份有限公司 Pipeline isolator
CN103836298B (en) * 2012-11-22 2016-05-11 中国石油天然气股份有限公司 A kind of pipeline isolation device
CN103016899A (en) * 2012-12-14 2013-04-03 广州中船黄埔造船有限公司 Pipe sealing device
CN103016899B (en) * 2012-12-14 2015-04-22 广州中船黄埔造船有限公司 Pipe sealing device
CN103047509B (en) * 2012-12-24 2014-10-29 中国石油大学(北京) Locking device of stopper inside pipe
CN103047509A (en) * 2012-12-24 2013-04-17 中国石油大学(北京) Locking device of stopper inside pipe
CN103953819A (en) * 2014-03-12 2014-07-30 祖宝华 Quick stopper for long-distance pipeline orifice
CN103953819B (en) * 2014-03-12 2015-10-28 祖宝华 Long-distance transport pipes mouth of pipe quick plugging device
CN104197013A (en) * 2014-09-12 2014-12-10 上海电气核电设备有限公司 Small-connecting-pipe mechanical sealing structure and sealing method
CN104565662B (en) * 2014-12-22 2018-04-27 洛阳能源密封件有限公司 A kind of soft plugging device of pipe head
CN104565662A (en) * 2014-12-22 2015-04-29 洛阳能源密封件有限公司 Soft sealing and blocking device for pipeline end part
CN104568405A (en) * 2014-12-25 2015-04-29 中国石油天然气集团公司 Slips strength test device and system
CN104568405B (en) * 2014-12-25 2017-09-01 中国石油天然气集团公司 Slips strength test device and its system
CN105156673A (en) * 2015-09-14 2015-12-16 江西洪都航空工业集团有限责任公司 Big aperture blanking cap
CN105067195A (en) * 2015-09-14 2015-11-18 中船黄埔文冲船舶有限公司 Pipeline water filling test sealing isolation device and application method thereof
CN105546269A (en) * 2016-02-23 2016-05-04 南阳市鼎钢实业有限公司 Quickly assembled pipeline sealing device
CN106051373A (en) * 2016-08-03 2016-10-26 无锡隆盛科技股份有限公司 Sealing device with stepless adjustment type outside diameter
GB2555140A (en) * 2016-10-14 2018-04-25 Mcgarian Bruce An apparatus for sealing a pipe
GB2555219A (en) * 2016-10-14 2018-04-25 Mcgarian Bruce Apparatus for sealing a casing
GB2555219B (en) * 2016-10-14 2022-03-23 Mcgarian Bruce An Apparatus for sealing a pipe
CN110094594A (en) * 2018-01-31 2019-08-06 上海宝冶集团有限公司 Plug for pipeline pressure test
CN110576090A (en) * 2019-08-26 2019-12-17 四川航天长征装备制造有限公司 Pipe orifice sealing device
CN110576090B (en) * 2019-08-26 2020-11-27 四川航天长征装备制造有限公司 Pipe orifice sealing device
CN112628519A (en) * 2019-10-08 2021-04-09 中国石油化工股份有限公司 High-pressure self-tightening type pipeline plug and application thereof
CN111530632A (en) * 2020-05-15 2020-08-14 浙江浩普环保工程有限公司 Vertical type shaking-stopping device for lower end of wet electric cathode wire
CN111530632B (en) * 2020-05-15 2022-01-11 浙江浩普环保工程有限公司 Vertical type shaking-stopping device for lower end of wet electric cathode wire
CN111577894A (en) * 2020-05-27 2020-08-25 福建宁德核电有限公司 Prevent foreign matter plugging device suitable for multiple bore

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20091125

Termination date: 20161225

CF01 Termination of patent right due to non-payment of annual fee