CN207864832U - A kind of pipe joint sealing structure and pipe fitting - Google Patents
A kind of pipe joint sealing structure and pipe fitting Download PDFInfo
- Publication number
- CN207864832U CN207864832U CN201721803986.1U CN201721803986U CN207864832U CN 207864832 U CN207864832 U CN 207864832U CN 201721803986 U CN201721803986 U CN 201721803986U CN 207864832 U CN207864832 U CN 207864832U
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- CN
- China
- Prior art keywords
- sealing structure
- pipe joint
- joint sealing
- screw thread
- pipe
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Abstract
The utility model provides a kind of pipe joint sealing structure and pipe fitting, the pipe joint sealing structure include：Ontology is provided with the first screw thread on the ontology；The cap nut being connect with the body fits is provided with the second screw thread to match with first screw thread on the inner wall on the cap nut；Wherein, second screw thread is wedge screw thread.The pipe joint sealing structure of the utility model embodiment, wedge thread is applied on the internal thread of cap nut, improve the anti-loosening property of pipe joint sealing structure, the pretightning force relaxation of pipe joint sealing structure can be effectively prevented, to avoid the decline of the pipe joint sealing structure pretightning force in actual production use, and then ensure the sealing performance of pipe joint sealing structure.
Description
Technical field
The utility model is related to mechanical engineering technical field, more particularly to a kind of pipe joint sealing structure and pipe fitting.
Background technology
Bulb-the conical surface, the pipe joint sealing structures such as the conical surface-conical surface and beam type are in necks such as Aeronautics and Astronautics, vehicle, ships
It is widely applied in the pipe-line system in domain, sealing performance directly determines the reliability of product.In the assembling process of pipe-line system
In, pretightning force is one of major influence factors of its sealing performance, and pipe fitting during the work time can vibrated, impact, friendship
The load effect such as becoming leads to that thread looseness phenomenon occurs between internal and external threads tooth, so as to cause the decline of pipe fitting pretightning force, into
And cause the reduction of sealing performance.Therefore, the locking holding to its sealing performance of pipe fitting is most important, how to improve pipe and connects
The anti-loosening property of head becomes engineering problem urgently to be resolved hurrily in practice.
But since pipe joint structure is compact, the structures such as common locking measures such as double nut, plain cushion, spring washer in engineering
It is difficult to apply in pipe joint sealing structure.
Utility model content
The utility model embodiment technical problems to be solved are to provide a kind of pipe joint sealing structure and pipe fitting, to
It realizes and ensures pipe seal performance.
In order to solve the above technical problems, the utility model embodiment provides a kind of pipe joint sealing structure, including：
Ontology is provided with the first screw thread on the ontology；
The cap nut being connect with the body fits is provided with and first spiral shell on the inner wall on the cap nut
The second screw thread that line matches；
Wherein, second screw thread is wedge screw thread.
Further, the wedge angle of second screw thread is 0 °~60 °.
Further, first screw thread is 60 ° of equilateral triangle screw threads.
Further, the ontology includes a connecting pin, and first screw thread is arranged on the outer wall of the connecting pin.
Further, the cap nut includes：
Nut body, the first end of the nut body are provided with opening, and the first end of the nut body is to separate
The direction of the second end of the nut body extends to form an extension；
Holding section, the holding section are fixedly connected with the second end of the nut body, and confession is provided on the holding section
The through-hole that component passes through.
On the other hand according to the utility model, the utility model embodiment additionally provides a kind of pipe fitting, including institute as above
The pipe joint sealing structure stated.
Compared with prior art, a kind of pipe joint sealing structure and pipe fitting that the utility model embodiment provides, at least
It has the advantages that：
Wedge thread is applied on the internal thread of cap nut by the pipe joint sealing structure of the utility model embodiment,
The anti-loosening property of pipe joint sealing structure is improved, the pretightning force relaxation of pipe joint sealing structure can be effectively prevented, to
The decline of the pipe joint sealing structure pretightning force in actual production use is avoided, and then ensures the leakproofness of pipe joint sealing structure
Energy.
Description of the drawings
Fig. 1 is the structural schematic diagram of the pipe joint sealing structure of the utility model embodiment；
Fig. 2 is the partial enlarged view at A in Fig. 1；
Fig. 3 is the partial enlarged view of second screw thread of the utility model embodiment.
Specific implementation mode
In order to make the technical problems, technical solutions and advantages to be solved by the utility model clearer, below in conjunction with attached drawing
And specific embodiment is described in detail.In the following description, such as specific configure with the specific detail of component only is provided
Only to assist in comprehensive understanding the embodiments of the present invention.It therefore, it will be apparent to those skilled in the art that can be to here
The embodiment of description makes various changes and modifications without departing from the scope of the utility model and spirit.In addition, in order to clear and
Succinctly, the description to known function and construction is omitted.
It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text mean it is related with embodiment
A particular feature, structure, or characteristic is included at least one embodiment of the utility model.Therefore, go out everywhere in the whole instruction
Existing " in one embodiment " or " in one embodiment " not necessarily refers to identical embodiment.In addition, these are specific special
Sign, structure or characteristic can in any suitable manner combine in one or more embodiments.
Referring to Fig. 1 to Fig. 3, the utility model embodiment provides a kind of pipe joint sealing structure, including：
Ontology 1 is provided with the first screw thread 2 on the ontology 1；
The cap nut 3 being connected with the ontology 1 is provided on the inner wall on the cap nut 3 and described the
The second screw thread 4 that one screw thread 2 matches；
Wherein, second screw thread 4 is wedge screw thread.
Wedge thread is applied on the internal thread of cap nut 3 by the pipe joint sealing structure of the utility model embodiment,
The anti-loosening property of pipe joint sealing structure is improved, the pretightning force relaxation of pipe joint sealing structure can be effectively prevented, to
The decline of the pipe joint sealing structure pretightning force in actual production use is avoided, and then ensures the leakproofness of pipe joint sealing structure
Energy.
In the related art, by taking bulb-conical surface sealing structure pipe fitting as an example, bulb-conical surface pipe joint sealing structure is logical
Often it is made of three kinds of 60 ° of conical surface parts, cap nut 3 and ball-end parts parts.The cap nut 3 and the conical surface zero of ordinary pipe couplings
Internal and external threads are 60 ° of equilateral triangle threads on part.Although this thread has root of the tooth intensity height, good self-locking property
The advantages that, still, in actual condition, the influence of the factors such as vibrated, alternating load and cataclysm temperature, common 60 ° are equilateral
The anti-loosing effect of triangle thread tooth is unsatisfactory, usually can there is a situation where thread looseness.
In the pipe joint sealing structure of the utility model embodiment, by the way that the internal thread of cap nut 3 is set as carving
Shape screw thread, when cap nut 3 being enabled to coordinate with pipe fitting under the action of pretightning force, 2 deformation of the first screw thread is thus with carving
Shape screw thread matches, and forms a firm threaded connection.
Referring to Fig. 3, wherein the wedge angle of second screw thread 4 is 0 °~60 °.It can be tested by a large number of experiments and emulation
Card, wedge angle [alpha], which is 0 °~60 °, has certain anti-loosing effect, and anti-loosing effect is best when wherein wedge angle is about 30 °.
Wherein, first screw thread 2 can be 60 ° of equilateral triangle screw threads, that is, common standard screw thread, it is contemplated that answer
The influence that power is concentrated, while being limited by working ability, actual thread tooth can also be isosceles trapezoid.
Further, the ontology 1 includes a connecting pin, and first screw thread 2 is arranged on the outer wall of the connecting pin.
Cap nut 3 is spirally connected with the connecting pin.
Referring to Fig. 1, wherein the cap nut 3 may include：
The first end of nut body 31, the nut body 31 is provided with opening, and the first end of the nut body 31
An extension 32 is extended to form to the direction of the second end far from the nut body 31；
Holding section 33, the holding section 33 are fixedly connected with the second end of the nut body 31, on the holding section 33
It is provided with the through-hole passed through for component.
Wherein component can be ball-end parts, and the setting of through-hole is installed convenient for ball-end parts.
On the other hand according to the utility model, the utility model embodiment additionally provides a kind of pipe fitting, including institute as above
The pipe joint sealing structure stated.
To sum up, wedge thread is applied to the interior spiral shell of cap nut 3 by the pipe joint sealing structure of the utility model embodiment
On line, the anti-loosening property of pipe joint sealing structure is improved, the pretightning force relaxation of pipe joint sealing structure can be effectively prevented,
To avoid the decline of the pipe joint sealing structure pretightning force in actual production use, and then ensure the close of pipe joint sealing structure
Sealing property.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, under the premise of not departing from principle described in the utility model, several improvements and modifications can also be made, these improvement
The scope of protection of the utility model is also should be regarded as with retouching.
Claims (6)
1. a kind of pipe joint sealing structure, which is characterized in that including：
Ontology is provided with the first screw thread on the ontology；
The cap nut being connect with the body fits is provided with and the first screw thread phase on the inner wall on the cap nut
Matched second screw thread；
Wherein, second screw thread is wedge screw thread.
2. pipe joint sealing structure according to claim 1, which is characterized in that the wedge angle of second screw thread is 0 °
~60 °.
3. pipe joint sealing structure according to claim 1, which is characterized in that first screw thread is 60 ° of equilateral triangles
Shape screw thread.
4. pipe joint sealing structure according to claim 1, which is characterized in that the ontology includes a connecting pin, described
First screw thread is arranged on the outer wall of the connecting pin.
5. pipe joint sealing structure according to claim 1, which is characterized in that the cap nut includes：
The first end of nut body, the nut body is provided with opening, and the first end of the nut body is to far from described
The direction of the second end of nut body extends to form an extension；
Holding section, the holding section are fixedly connected with the second end of the nut body, are provided on the holding section for cooperation
The through-hole that component passes through.
6. a kind of pipe fitting, which is characterized in that including such as Claims 1 to 5 any one of them pipe joint sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721803986.1U CN207864832U (en) | 2017-12-21 | 2017-12-21 | A kind of pipe joint sealing structure and pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721803986.1U CN207864832U (en) | 2017-12-21 | 2017-12-21 | A kind of pipe joint sealing structure and pipe fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207864832U true CN207864832U (en) | 2018-09-14 |
Family
ID=63465899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721803986.1U Expired - Fee Related CN207864832U (en) | 2017-12-21 | 2017-12-21 | A kind of pipe joint sealing structure and pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207864832U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878645A (en) * | 2020-08-11 | 2020-11-03 | 贵州航天精工制造有限公司 | Pipe joint with anti-loosening structure |
| CN112240825A (en) * | 2019-07-19 | 2021-01-19 | 中国航天标准化研究所 | Pipe joint sealing structure torsion-tension relation testing device and method |
-
2017
- 2017-12-21 CN CN201721803986.1U patent/CN207864832U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240825A (en) * | 2019-07-19 | 2021-01-19 | 中国航天标准化研究所 | Pipe joint sealing structure torsion-tension relation testing device and method |
| CN112240825B (en) * | 2019-07-19 | 2023-07-07 | 中国航天标准化研究所 | Device and method for testing torsion-pull relation of pipe joint sealing structure |
| CN111878645A (en) * | 2020-08-11 | 2020-11-03 | 贵州航天精工制造有限公司 | Pipe joint with anti-loosening structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180914 Termination date: 20181221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |