CN203067995U - Pipeline threaded connector - Google Patents
Pipeline threaded connector Download PDFInfo
- Publication number
- CN203067995U CN203067995U CN 201320034391 CN201320034391U CN203067995U CN 203067995 U CN203067995 U CN 203067995U CN 201320034391 CN201320034391 CN 201320034391 CN 201320034391 U CN201320034391 U CN 201320034391U CN 203067995 U CN203067995 U CN 203067995U
- Authority
- CN
- China
- Prior art keywords
- flat shoulder
- connector
- grafting head
- shoulder grafting
- pipe
- 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 - Lifetime
Links
Images
Abstract
The utility model discloses a pipeline threaded connector which comprises a front pipe flat shoulder connector and a rear pipe flat shoulder connector, wherein one ends of the front pipe flat shoulder connector and the rear pipe flat shoulder connector are provided with welding grooves, and the other ends of the front pipe flat shoulder connector and the rear pipe flat shoulder connector are provided with bosses; a gasket ring is clamped and padded between the bosses of the front pipe flat shoulder connector and a rear pipe flat shoulder connector; a screwing connector with an external thread is arranged on the front pipe flat shoulder connector in a sleeving manner; an externally sleeving nut with an internal thread is arranged on the rear pipe flat shoulder connector; the externally sleeving nut is in threaded connection with the screwing connector; and the inner wall at one end of the externally sleeving nut is provided with a convex shoulder. The pipeline threaded connector is characterized in that an elastic pad is arranged on the rear pipe flat shoulder connector in the sleeving manner, and the elastic pad is located between the boss of the rear pipe flat shoulder connector and the convex shoulder of the externally sleeving nut. After the threaded connector is used for a long term, the characteristic of rebounding of the elastic pad is used for compensating the creep stress loosening to avoid leakage of the gasket ring caused by stress reduction, so that the sealing performance of the pipeline threaded connector is ensured, and the service life of the pipeline threaded connector is prolonged.
Description
Technical field
This use is novel to relate to a kind of pressure duct inipple that can resist creep under variable stress.
Background technique
Inipple is common pipeline connecting parts, and is simple and easy to operate because of its installation and removal, little extensive use takes up room.The most important characteristic of inipple will guarantee its sealing exactly, adopts flat shoulder grafting head to add the structural type of gasket seal more.For instance, inipple generally is made up of seal connector (flat shoulder grafting head), gasket seal and threaded fastener (as cap nut, screw-in joint) etc., and the prefastening load that acts on the gasket seal has determined sealability.After feeding high-pressure medium, fluid thrust can make prefastening load reduce, and gasket seal produces spring-back force and compensates pretightening force, will cause seal failure if exceeded the resilience of gasket seal.Inipple is under the effect of high-pressure working medium alternate load and temperature alternating, and As time goes on the resilience stress on the gasket seal material reduction in various degree all can take place, i.e. creep relaxation.Creep relaxation is one of major reason that causes the inipple seal failure.The seal failure that brings owing to creep relaxation under the big alternate load effect of high-pressure fluid medium is more general.After the gasket seal of inipple produced creep relaxation, sealing surface can be peeled off, and causes leakage then, has reduced the working life of inipple, influences the normal use of pipeline.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of pipeline inipple, the stress loss that its energy compensation sealing pad causes owing to creep, thus the sealing of assurance inipple prevents from revealing, and reaches to prolong the inipple purpose in working life.
The utility model is to address the above problem the technological scheme that adopts to be the flat shoulder grafting head of pipe before comprising and the flat shoulder grafting head of back pipe, the front end of the rear end of the flat shoulder grafting head of pipe and the flat shoulder grafting head of back pipe is provided with boss before described, folder is lined with gasket seal between the boss of the preceding flat shoulder grafting head of pipe and the flat shoulder grafting head of back pipe, overlap on the flat shoulder grafting head of pipe before described and be equiped with externally threaded screw-in joint, screw in the joint rear end near the boss of the flat shoulder grafting head of preceding pipe, cover is equiped with the cap nut of internal thread on the flat shoulder grafting head of described back pipe, the inwall of cap nut rear end is provided with convex shoulder screws in joint near the back pipe boss, cap nut is connected with the screw-in joint screw thread, it is characterized in that: also be set with resilient pad on the flat shoulder grafting head of described back pipe, described resilient pad places between the convex shoulder of the boss of the flat shoulder grafting head of back pipe and cap nut.
By technique scheme, described resilient pad is the surface of contact dish-shaped resilient pad at angle of managing the boss of flat shoulder grafting head with described back, and described angle is 15o.
By technique scheme, described gasket seal is for radially becoming the fusiformis gasket seal on small angle inclined-plane with through hole from the edge to the central through bore, and described small angle is 8o.
By technique scheme, the front end of the flat shoulder grafting head of described preceding pipe and the rear end of the flat shoulder grafting head of back pipe are provided with the bevel for welding for connecting pipeline.
The beneficial effects of the utility model are: by increasing the structural design that a resilient pad changes the pipeline inipple, described resilient pad is used for the compensation sealing pad because the stress loss that creep causes, in pipeline, feed high-pressure medium, because resilient pad has rebound characteristics, produce elastic strain behind the pressurized, the effective stress relaxation of compensation sealing pad, thereby the sealing surface that prevents gasket seal is peeled off, prevent from revealing, and then the sealing of assurance inipple, the working life of prolongation inipple.
Further guarantee the sealing of inipple, the resilient pad that the utility model uses adopts butterfly structure, has strengthened the resilience of resilient pad more, can better offset the creep under variable stress of gasket seal.
Further guarantee the sealing of inipple, the gasket seal that the utility model uses adopts the fusiformis structure, after inipple applied screw threads for fastening power, end, described inclined-plane produced an adaptive linear sealing face according to the size of fastening force, improves sealing effect.
Description of drawings
Fig. 1 is an embodiment's of the utility model structural representation;
Fig. 2 is butterfly resilient pad sectional view;
Fig. 3 is fusiformis gasket seal sectional view.
Embodiment
Further describe mode of execution of the present utility model below in conjunction with accompanying drawing.
As shown in Figure 1, the flat shoulder grafting head 2 of pipe and the flat shoulder grafting head 8 of back pipe before comprising, the front end of the rear end of the flat shoulder grafting head 2 of preceding pipe and the flat shoulder grafting head 8 of back pipe is provided with boss, folder is lined with gasket seal 4 between the boss 9 of the boss 6 of the flat shoulder grafting head 2 of preceding pipe and the flat shoulder grafting head 8 of back pipe, cover is equiped with externally threaded screw-in joint 3 on the flat shoulder grafting head 2 of preceding pipe, screw in joint 3 rear ends near the boss of the flat shoulder grafting head 2 of preceding pipe, cover is equiped with the cap nut 1 of internal thread on the flat shoulder grafting head 8 of back pipe, the inwall of cap nut 1 rear end is provided with convex shoulder 7 screws in joint 8 near the back pipe boss 9, cap nut 1 is threaded with screw-in joint 3, also be set with resilient pad 5 on the flat shoulder grafting head 8 of back pipe, resilient pad 5 places between the convex shoulder 7 of the boss 9 of the flat shoulder grafting head 8 of back pipe and cap nut 1.The rear end of the front end of the flat shoulder grafting head 2 of preceding pipe and the flat shoulder grafting head 8 of back pipe is provided with the bevel for welding for connecting pipeline.
As shown in Figure 2, the butterfly resilient pad that the resilient pad 5 that the utility model uses is made as materials such as Elastic Steel, its with the surface of contact of the boss 9 of the flat shoulder grafting head 8 of back pipe at angle, angle is 15o, the thickness of butterfly resilient pad is t, diameter is D.
As shown in Figure 3, the fusiformis gasket seal that the gasket seal 4 that the utility model uses is made as materials such as rubber, it radially becomes the small angle inclined-plane with through hole from the edge to the central through bore, and small angle is 8o, and the thickness of fusiformis gasket seal is 4mm, and external diameter is D, internal diameter is d.
Using process of the present utility model is: nut makes the fusiformis gasket seal produce an adaptive linear sealing surface with the screw threads for fastening power that screws in joint during the inipple assembling, feed high-pressure medium during work in inipple and the pipeline that connects thereof, resilient pad produces elastic strain simultaneously.After long-time the use, the gasket seal creep under variable stress is lax, and the creep stress that the rebound characteristics of resilient pad is used for the compensation sealing pad is lax, has prevented the leakage that the gasket seal stress descends and causes, thereby guarantee the sealing of joint, prolonged the working life of inipple.
Claims (4)
1. pipeline inipple, the flat shoulder grafting head of pipe and the flat shoulder grafting head of back pipe before comprising, the front end of the rear end of the flat shoulder grafting head of pipe and the flat shoulder grafting head of back pipe is provided with boss before described, folder is lined with gasket seal between the boss of the preceding flat shoulder grafting head of pipe and the flat shoulder grafting head of back pipe, overlap on the flat shoulder grafting head of pipe before described and be equiped with externally threaded screw-in joint, screw in the joint rear end near the boss of the flat shoulder grafting head of preceding pipe, cover is equiped with the cap nut of internal thread on the flat shoulder grafting head of described back pipe, the inwall of cap nut rear end is provided with convex shoulder screws in joint near the back pipe boss, cap nut is connected with the screw-in joint screw thread, it is characterized in that: also be set with resilient pad on the flat shoulder grafting head of described back pipe, described resilient pad places between the convex shoulder of the boss of the flat shoulder grafting head of back pipe and cap nut.
2. pipeline inipple according to claim 1 is characterized in that: described resilient pad for and the surface of contact dish-shaped resilient pad at angle of the boss of the flat shoulder grafting head of described back pipe, described angle is 15 o.
3. pipeline inipple according to claim 1 is characterized in that: described gasket seal is for radially becoming the fusiformis gasket seal on small angle inclined-plane with through hole from the edge to the central through bore, described small angle is 8 o.
4. pipeline inipple according to claim 1 is characterized in that: the rear end of the front end of the flat shoulder grafting head of pipe and the flat shoulder grafting head of back pipe is provided with the bevel for welding for connecting pipeline before described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320034391 CN203067995U (en) | 2013-01-23 | 2013-01-23 | Pipeline threaded connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320034391 CN203067995U (en) | 2013-01-23 | 2013-01-23 | Pipeline threaded connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203067995U true CN203067995U (en) | 2013-07-17 |
Family
ID=48766778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320034391 Expired - Lifetime CN203067995U (en) | 2013-01-23 | 2013-01-23 | Pipeline threaded connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203067995U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106232279A (en) * | 2014-01-24 | 2016-12-14 | 电力研究所有限公司 | Stepped design welding line joint groove |
-
2013
- 2013-01-23 CN CN 201320034391 patent/CN203067995U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106232279A (en) * | 2014-01-24 | 2016-12-14 | 电力研究所有限公司 | Stepped design welding line joint groove |
| US10994361B2 (en) | 2014-01-24 | 2021-05-04 | Electric Power Research Institute, Inc. | Stepped design weld joint preparation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206195308U (en) | Built -in damping particle and filling liquid's damper | |
| CN103527607A (en) | Nut | |
| CN201723870U (en) | Sealless oil pipe joint | |
| CN105889734B (en) | Grease fitting | |
| CN203067995U (en) | Pipeline threaded connector | |
| CN105977073B (en) | Nozzle connection structure and the arc-chutes and breaker using the structure | |
| CN202065566U (en) | Sealing connection device of metal fuel pipe of diesel engine | |
| CN201866231U (en) | Oil seal convenient to dismantle and disassembly tool therefor | |
| CN201884234U (en) | Pump head of diaphragm type metering pump | |
| CN103016839B (en) | Elastic thin-wall valve seat for big-flow high-pressure valve | |
| CN202468120U (en) | Fuel injector gasket | |
| CN204082766U (en) | The stuck Electrohydraulic push rod of anti-screw thread | |
| CN211738008U (en) | Hydraulic conical surface metal sealing process plug | |
| CN204664095U (en) | Be applicable to the anti-loose structure be threaded | |
| CN205136870U (en) | Fire oil pipe connection structure | |
| CN208311180U (en) | A kind of hydraulic cylinder being easily installed oil pipe | |
| CN202302034U (en) | Internal-pressure self-sealing valve structure | |
| CN203945615U (en) | A kind of novel lock mould oil cylinder hermetically-sealed construction | |
| CN209587422U (en) | A kind of bending rubber joint | |
| CN218236307U (en) | Leakage-proof corrosion-resistant four-way valve seal head | |
| CN204003134U (en) | Gas engine cylinder cap | |
| CN209638577U (en) | A kind of double sealing structure of screwed pipe joint | |
| CN214366982U (en) | Special cylinder for raising pigs | |
| CN216279478U (en) | Thin type shearing valve | |
| CN202252389U (en) | Sealing structure of cable interface for pressure vessel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160706 Address after: 430025 No. four, No. 35, hi tech Development Zone, East Lake hi tech Development Zone, Hubei, Wuhan Patentee after: WUHAN HAIBORUI TECHNOLOGY Co.,Ltd. Address before: 441623 Hubei Province, Wuhan city Wuchang District Ziyang Road No. 268 Patentee before: China Ship Research and Design Center |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20220120 Address after: No. 268, ZhangZhidong Road, Wuchang District, Wuhan City, Hubei Province 430064 Patentee after: China Ship Research and Design Center Address before: 430025 No.35, Gaoxin 4th Road, Donghu hi tech Development Zone, Wuhan City, Hubei Province Patentee before: WUHAN HAIBORUI TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |
|
| CX01 | Expiry of patent term |