CN104565626A - Auxiliary sealing structure for spherical joint - Google Patents

Auxiliary sealing structure for spherical joint Download PDF

Info

Publication number
CN104565626A
CN104565626A CN201410766291.5A CN201410766291A CN104565626A CN 104565626 A CN104565626 A CN 104565626A CN 201410766291 A CN201410766291 A CN 201410766291A CN 104565626 A CN104565626 A CN 104565626A
Authority
CN
China
Prior art keywords
joint
spherical
gland nut
sealing structure
screwing
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.)
Pending
Application number
CN201410766291.5A
Other languages
Chinese (zh)
Inventor
赵志芳
侯新荣
宋海涛
张晓静
吴波
王正
王连春
张洁
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.)
China North Engine Research Institute Tianjin
Original Assignee
China North Engine Research Institute Tianjin
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 China North Engine Research Institute Tianjin filed Critical China North Engine Research Institute Tianjin
Priority to CN201410766291.5A priority Critical patent/CN104565626A/en
Publication of CN104565626A publication Critical patent/CN104565626A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00Adjustable joints, Joints allowing movement
    • F16L27/02Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
    • F16L27/04Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00Adjustable joints, Joints allowing movement
    • F16L27/02Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
    • F16L27/04Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces
    • F16L27/06Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction with partly spherical engaging surfaces with special sealing means between the engaging surfaces

Abstract

The invention provides an auxiliary sealing structure for a spherical joint. The auxiliary sealing structure comprises a screwing-in joint, a spherical pipe joint and a gland nut, wherein an external spherical head of the spherical pipe joint is inserted into an inner tapered hole of the screwing-in joint; the gland nut is sleeved in an unthreaded hole of the spherical pipe joint; internal threads of the gland nut are matched and tightened with external threads of the screwing-in joint; a spherical surface of the external spherical head and the inner tapered hole form a linear annular contact sealing belt; an annular sealing gasket is mounted between an inner end face of the gland nut and an outer end face of the spherical pipe joint. The auxiliary sealing structure for the spherical joint has the advantages and positive effects that an O-shaped sealing ring is additionally arranged in a meshing area of the external threads of the screwing-in joint and the internal threads of the gland nut, and the annular sealing gasket is additionally arranged between the inner end face of the gland nut and the outer end face of the spherical pipe joint, so that the sealing effect of the spherical pipe joint is promoted, and the leakage problem of the spherical pipe joint is solved.

Description

A kind of spherical joint auxiliary sealing structure
Technical field
The invention belongs to ball shaped joint construction technical field of sealing technology, especially relate to a kind of spherical joint auxiliary sealing structure.
Background technique
Spherical joint sealing configuration is a kind of seal form generally adopted in diesel low-voltage pipeline.Sealing form structure is simple, it is little to take up room, centering adjustment is easy, easy to assembly, can be applicable to the environment that medium system, cooling system and lubrication system etc. use different mediums.But the leakage problem of spherical joint, is also diesel engine in use long-standing phenomenon of the failure, has certain generality.
The line style ring-like contact band that spherical tube coupling sphere is formed with screw-in structure taper hole, i.e. sealing strip, sealing effect is unstable, especially high-power diesel engine work under bad environment, in the larger situation of complete machine oscillation, in actual use, often there is the leakage of medium, pollute engine room, even cause serious consequences such as catching fire.
Summary of the invention
In view of this, the problem to be solved in the present invention is to provide a kind of spherical joint auxiliary sealing structure, to solve the sealing problem of spherical joint.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of spherical joint auxiliary sealing structure, comprises and screws in joint, spherical tube coupling and gland nut, and the outer spherical head of described spherical tube coupling inserts in the internal tapered hole screwing in joint, and gland nut is inserted in the unthreaded hole of spherical tube coupling; By gland nut internal thread with screw in the outside thread of joint and coordinate and tighten, the sphere of outer spherical head and internal tapered hole form linear ring-like contact sealing strip;
Between described gland nut interior edge face and spherical tube coupling exterior edge face, annular sealing gaskets is installed, a seal groove is provided with in the middle part of the outer side surface of described screw-in joint, be provided with O RunddichtringO in seal groove, described O RunddichtringO is between the outside thread screwing in joint and the internal thread of gland nut.
Preferably, described annular sealing gaskets can adopt rubber or soft metal to make.
Preferably, described O RunddichtringO adopts rubber to make.
The advantage that the present invention has and good effect are:
The present invention is by adding O RunddichtringO at screw-in joint outside thread and gland nut internal thread mesh regional, compress end face add annular sealing gaskets between spherical joint exterior edge face and gland nut interior edge face, improve the sealing effect of spherical joint, solve spherical joint leakage problems; And easy to process, less to structural modification, cost increases little.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure:
1-screws in joint, the spherical tube coupling of 2-, 3-gland nut, 4-annular sealing gaskets, 5-O RunddichtringO.
Embodiment
Below in conjunction with accompanying drawing, specific embodiments of the invention are elaborated.
A kind of spherical joint auxiliary sealing structure, comprises and screws in joint 1, spherical tube coupling 2 and gland nut 3, and the outer spherical head of spherical tube coupling 2 inserts in the internal tapered hole screwing in joint 1, and gland nut 3 is inserted in the unthreaded hole of spherical tube coupling 2; By gland nut 3 internal thread with screw in the outside thread of joint 1 and coordinate and tighten, the sphere of outer spherical head and internal tapered hole form linear ring-like contact sealing strip.
Be provided with annular sealing gaskets 4 between described gland nut 3 interior edge face and spherical tube coupling 2 exterior edge face, described annular sealing gaskets 4 can adopt rubber or soft metal to make.
Be provided with a seal groove in the middle part of the outer side surface of described screw-in joint 1, be provided with O RunddichtringO 5 in seal groove, described O RunddichtringO 5 is between the outside thread screwing in joint 1 and the internal thread of gland nut 3, and described O RunddichtringO 5 adopts rubber to make.
When in use, add O RunddichtringO 5 at the screw-in outside thread of joint 1 and the internal thread mesh regional of gland nut 3, between the exterior edge face of spherical tube coupling 2 and gland nut 3 interior edge face, compress end face add annular sealing gaskets 4, improve the sealing effect of spherical joint, solve spherical joint leakage problems.
Above one embodiment of the present of invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the present patent application scope change and improve, and all should still belong within patent covering scope of the present invention.

Claims (3)

1. a spherical joint auxiliary sealing structure, comprises and screws in joint, spherical tube coupling and gland nut, it is characterized in that: the outer spherical head of described spherical tube coupling inserts in the internal tapered hole screwing in joint, and gland nut is inserted in the unthreaded hole of spherical tube coupling; By gland nut internal thread with screw in the outside thread of joint and coordinate and tighten, the sphere of outer spherical head and internal tapered hole form linear ring-like contact sealing strip;
Between described gland nut interior edge face and spherical tube coupling exterior edge face, annular sealing gaskets is installed, a seal groove is provided with in the middle part of the outer side surface of described screw-in joint, be provided with O RunddichtringO in seal groove, described O RunddichtringO is between the outside thread screwing in joint and the internal thread of gland nut.
2. spherical joint auxiliary sealing structure according to claim 1, is characterized in that: described annular sealing gaskets can adopt rubber or soft metal to make.
3. spherical joint auxiliary sealing structure according to claim 2, is characterized in that: described O RunddichtringO adopts rubber to make.
CN201410766291.5A 2014-12-11 2014-12-11 Auxiliary sealing structure for spherical joint Pending CN104565626A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410766291.5A CN104565626A (en) 2014-12-11 2014-12-11 Auxiliary sealing structure for spherical joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410766291.5A CN104565626A (en) 2014-12-11 2014-12-11 Auxiliary sealing structure for spherical joint

Publications (1)

Publication Number Publication Date
CN104565626A true CN104565626A (en) 2015-04-29

Family

ID=53082360

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410766291.5A Pending CN104565626A (en) 2014-12-11 2014-12-11 Auxiliary sealing structure for spherical joint

Country Status (1)

Country Link
CN (1) CN104565626A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107859744A (en) * 2017-11-17 2018-03-30 江西怡杉环保股份有限公司 HTHP sealed digestion device
CN113236782B (en) * 2021-04-29 2023-11-17 西安航天精密机电研究所 High-pressure-resistant low-friction dynamic sealing structure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2426059Y (en) * 2000-04-07 2001-04-04 章其东 Universal adjustable joint piece
KR20100038654A (en) * 2008-10-06 2010-04-15 유영민 A preventive means of hosepipe's being twisted
CN201723870U (en) * 2010-04-01 2011-01-26 丁健 Sealless oil pipe joint
CN202252485U (en) * 2011-09-28 2012-05-30 浙江奥利达气动工具股份有限公司 Air inlet adapter capable of rotating by 360 degrees
CN202252484U (en) * 2011-08-29 2012-05-30 贵州航太精密制造有限公司 Pipeline connection structure with adjustable application range
CN203463833U (en) * 2013-09-27 2014-03-05 湖北航天技术研究院总体设计所 Sealing assembly for butt-joint of high-temperature high-pressure gas pipelines

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2426059Y (en) * 2000-04-07 2001-04-04 章其东 Universal adjustable joint piece
KR20100038654A (en) * 2008-10-06 2010-04-15 유영민 A preventive means of hosepipe's being twisted
CN201723870U (en) * 2010-04-01 2011-01-26 丁健 Sealless oil pipe joint
CN202252484U (en) * 2011-08-29 2012-05-30 贵州航太精密制造有限公司 Pipeline connection structure with adjustable application range
CN202252485U (en) * 2011-09-28 2012-05-30 浙江奥利达气动工具股份有限公司 Air inlet adapter capable of rotating by 360 degrees
CN203463833U (en) * 2013-09-27 2014-03-05 湖北航天技术研究院总体设计所 Sealing assembly for butt-joint of high-temperature high-pressure gas pipelines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107859744A (en) * 2017-11-17 2018-03-30 江西怡杉环保股份有限公司 HTHP sealed digestion device
CN113236782B (en) * 2021-04-29 2023-11-17 西安航天精密机电研究所 High-pressure-resistant low-friction dynamic sealing structure

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Application publication date: 20150429

RJ01 Rejection of invention patent application after publication