CN204611024U - The valve of the seal ring with self-tightening sealing - Google Patents
The valve of the seal ring with self-tightening sealing Download PDFInfo
- Publication number
- CN204611024U CN204611024U CN201520204553.9U CN201520204553U CN204611024U CN 204611024 U CN204611024 U CN 204611024U CN 201520204553 U CN201520204553 U CN 201520204553U CN 204611024 U CN204611024 U CN 204611024U
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- CN
- China
- Prior art keywords
- seal ring
- valve
- plane
- inclination angle
- flange
- 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
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Abstract
The utility model is the valve of seal ring of band self-tightening sealing, solves existing valve and valve gap, the problem of external leakage easily appears in the sealing of pipeline.Valve body (1) with valve gap (2) or/and the V-type annular groove that on pipeline, the junction plane of abutted flange (4) has symmetrical inclined-plane to form and the seal ring (3) that cross section is V-type coordinate, seal ring is the ring seal ring that inside and outside wall all has inclination angle, and the inclination angle on the outer wall inclined-plane of seal ring (3) is greater than the inclination angle on inclined-plane of symmetry of valve body and valve gap, abutted flange.
Description
technical field:
The utility model is relevant with valve and underwater flange, especially relevant with flange seal in valve.
background technique:
Existing valve, the sealing of middle flange mainly realizes by O type circle or metal wound gasket.The sealing of its O type circle is along with the increase of service life, and material is easily aging, and then easily occurs external leakage.Also easily external leakage is there is after the many mounting or dismounting several times of metal wound gasket sealing.That O type circle or metal wound gasket sealing all exist when after in-vivo medium pressure increase, the problem that the seal pressure between its Gai Yuti reduces, thus the possibility that medium is leaked increases.Especially high pressure or Super high pressure valve and serious potential safety hazard is existed especially to the valve of poisonous, harmful, inflammable and explosive medium transport.
model utility content:
It is simple that the purpose of this utility model is to provide a kind of structure, guarantees middle flange, underwater flange seals completely, do not produce the valve of the seal ring of the band self-tightening sealing of leakage.
The utility model is achieved in that
Valve body 1 with valve gap 2 or/and the seal ring 3 that the junction plane of the abutted flange 4 V-type annular groove that has symmetrical inclined-plane to form and cross section are V-type coordinates, seal ring 3 is the ring seal ring that inside and outside wall all has oblique angle, and the inclination angle on the outer wall inclined-plane of seal ring 3 is greater than the inclination angle on valve body 1 and the inclined-plane of the symmetry of valve gap 2, abutted flange 4.
Valve body 1 is respectively middle flange, underwater flange with the junction plane of valve gap 2, abutted flange 4.
Seal ring 3 is made up of PTFE or metal.
Valve body 1 of the present utility model and valve gap 2, valve body 1 and abutted flange 4 are the inclined-plane having several angle with seal ring 3 junction plane, inclined-plane (varying in size with the symmetrical inclination angle of inclined plane of valve body 1 with valve gap 2 or abutted flange 4) on this inclined-plane and seal ring 3 fits under pretightening force effect, reaches seal action.When in valve body cavity, pressure medium acts on valve gap 2, pretightening force between valve gap 2 and valve body 1 will reduce, seal pressure also reduces thereupon, be subject to pressure medium effect in the V-type vallecular cavity of now seal ring 3 simultaneously, sealing inclined-plane A, B surface pressure that itself and valve body 1 and valve gap 2 are fitted strengthens, and compensate for the reduction of valve seal specific pressure.Avoiding problems because seal pressure reduces to produce the possibility leaked outside.Sealing ring, for pipeline, can prevent temperature change to cause the possibility that leaks outside of flange connections.
The utility model has the following advantages:
1, guarantee that middle flange and underwater flange seal completely, do not produce leakage, can be connected with pipeline for related valve.Especially for high pressure and Super high pressure valve more practical.
2, sealing is reliable, and long service life, can guarantee that fed sheet of a media does not leak outside.Can be used for inflammable, the poisonous medium operating mode of requirement zero leakage.
3, structure is simple, cost is low.
accompanying drawing illustrates:
Fig. 1 is structural drawing of the present utility model.
Fig. 2 is the partial enlarged drawing of Fig. 1.
embodiment:
Valve body 1 with valve gap 2 or/and the seal ring 3 that the junction plane of the abutted flange 4 V-type annular groove that has symmetrical inclined-plane to form and cross section are V-type coordinates, seal ring 3 is the ring seal ring that inside and outside wall all has oblique angle, and the inclination angle on the outer wall inclined-plane of seal ring 3 is greater than the inclination angle on valve body 1 and the inclined-plane of the symmetry of valve gap 2, abutted flange 4.
Valve body 1 is respectively middle flange, underwater flange with the junction plane of valve gap 2, welding neckflange 4.
Seal ring 3 is made up of PTFE or metal.
Claims (3)
1. be with the valve of the seal ring of self-tightening sealing, it is characterized in that valve body (1) with valve gap (2) or/and the seal ring (3) that the V-type annular groove that on pipeline, the junction plane of abutted flange (4) has symmetrical inclined-plane to form and cross section are V-type coordinates, seal ring is the ring seal ring that inside and outside wall all has inclination angle, and the inclination angle on the outer wall inclined-plane of seal ring (3) is greater than the inclination angle on inclined-plane of symmetry of valve body and valve gap, abutted flange.
2. the valve of the seal ring of band self-tightening sealing according to claim 1, is characterized in that valve body (1) is respectively middle flange, underwater flange with the junction plane of valve gap (2), abutted flange (4).
3. the valve of the seal ring of band self-tightening sealing according to claim 1, is characterized in that seal ring is made up of PTFE or metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520204553.9U CN204611024U (en) | 2015-04-08 | 2015-04-08 | The valve of the seal ring with self-tightening sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520204553.9U CN204611024U (en) | 2015-04-08 | 2015-04-08 | The valve of the seal ring with self-tightening sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204611024U true CN204611024U (en) | 2015-09-02 |
Family
ID=53963591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520204553.9U Expired - Fee Related CN204611024U (en) | 2015-04-08 | 2015-04-08 | The valve of the seal ring with self-tightening sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204611024U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567954A (en) * | 2016-11-08 | 2017-04-19 | 上海发电设备成套设计研究院 | Split type self-tightening sealing regulating valve cover with cooling fins |
-
2015
- 2015-04-08 CN CN201520204553.9U patent/CN204611024U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567954A (en) * | 2016-11-08 | 2017-04-19 | 上海发电设备成套设计研究院 | Split type self-tightening sealing regulating valve cover with cooling fins |
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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: 20150902 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |