CN2314157Y - H shape composite cushion - Google Patents
H shape composite cushion Download PDFInfo
- Publication number
- CN2314157Y CN2314157Y CN 97243252 CN97243252U CN2314157Y CN 2314157 Y CN2314157 Y CN 2314157Y CN 97243252 CN97243252 CN 97243252 CN 97243252 U CN97243252 U CN 97243252U CN 2314157 Y CN2314157 Y CN 2314157Y
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- China
- Prior art keywords
- cushion
- utility
- model
- ring
- shaped
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- 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 relates to a sealing cushion particularly the sealing cushion between flange connections in industry, which comprises a cushion body in the shape of circular ring, and is characterized in that the middle parts of the upper surface and the lower surface of the cushion body are respectively provided with a ring-shaped concave groove, and expandable graphite is pressed into two ring-shaped concave groove to form an H-shaped composite cushion of integral type. The utility model is suitable for high-temperature between 200 DEG C to 600 DEG C and high pressure operation condition below 20MPa. The H-shaped construction of the cushion can prevent expandable graphite from radial flow at high temperatures. The utility model has the advantages of good sealing effect, easy processing, easy production, low cost, convenient operation, and repeatable utilization of cushion frameworks.
Description
The utility model relates to a kind of gasket seal, the gasket seal between the particularly industrial flange connections.
In the equipment of various industries such as petrochemical industry, chemical industry, medicine, food, electric power, all there are a large amount of " static seal " problems.Often there is the dielectric leakage phenomenon to occur, causes fire, blast, cause tremendous economic loss, personal injury and environmental pollution.And present 95% " static seal " is to adopt " flange seal ", and pad is exactly a critical piece in the flange seal system.Existing pad mainly contains rubber asbestos plate, dentiform gasket, octangonal ring, expanded graphite wound gasket, strengthens expanded graphite pad, wave tooth composite gasket etc., and all there are some problems in various degree in they.Rubber asbestos plate pad high temperature easily leaks down, can only use below 200 ℃; The control of solid-metal serrated gasket machining error is strict, the easy damaged flange facing, and its mild steel material source is nervous; Octagonal Steel pad machining error and surface roughness require high, cost an arm and a leg, and flange facing is difficult to repair; The expanded graphite wound gasket is difficult to centering to concavo-convex flange, is easy to generate " conquassation " phenomenon, and its major diameter pad is difficult to make and easy " falling apart "; Strengthen the expanded graphite pad and easily produce the mutual sliding phenomenon of interlayer, and cost an arm and a leg; The corrugated serrated compound gasket processing difficulties costs an arm and a leg, and can't reuse.
The purpose of this utility model is exactly in order to address the above problem, and a kind of good sealing effect is provided, produces easy H type Composition spacer.
Technical solution of the present utility model:
A kind of H type Composition spacer, it includes the ring clout body, and it is characterized in that respectively has a shallow annular groove at the middle part, upper and lower surface of clout body, is pressed into expanded graphite in the two shallow annular grooves, constitutes an integrated type H type Composition spacer.
Advantage of the present utility model:
1, is applicable to 200 ℃ of-600 ℃ of high temperature and the following operation with high pressure condition of 20MPa.
2, the H type structure of pad can prevent Radial Flow under the expanded graphite high temperature, and sealing effect is good.
3, processing is simple, production is easy, with low cost, easy to operate.
4, the pad skeleton can reuse.
Fig. 1 is a structural representation of the present utility model.
As Fig. 1, the utility model respectively has in a shallow annular groove 2, two shallow grooves 2 at the middle part on the upper and lower surface of ring clout body 1 and is pressed into expanded graphite 3, and expanded graphite 3 can adopt Bond and clout body 1 to fuse, and constitutes integrated type H type Composition spacer.The thickness of the expanded graphite 3 that is pressed into and the degree of depth of clout body shallow grooves 2 match, and also can slightly exceed the shallow grooves 2 of clout body 1, utilize the elastic performance of graphite to play good sealing effect.
The utility model uses time image, and the same clamping of pad was between two adpting flanges in the past, and the test that process high temperature pressure corrosion medium and temperature fluctuate widely proves favorable sealing property, is better than the pad of other various structures.
Claims (1)
1, a kind of H type Composition spacer, it includes the ring clout body, and it is characterized in that respectively has a shallow annular groove at the middle part, upper and lower surface of clout body, is pressed into expanded graphite in the two shallow annular grooves, constitutes an integrated type H type Composition spacer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97243252 CN2314157Y (en) | 1997-12-22 | 1997-12-22 | H shape composite cushion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97243252 CN2314157Y (en) | 1997-12-22 | 1997-12-22 | H shape composite cushion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2314157Y true CN2314157Y (en) | 1999-04-14 |
Family
ID=33952279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97243252 Expired - Fee Related CN2314157Y (en) | 1997-12-22 | 1997-12-22 | H shape composite cushion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2314157Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425604A (en) * | 2006-02-01 | 2012-04-25 | 圣戈本操作塑料有限公司 | Composite gasket |
| CN103016732A (en) * | 2012-12-31 | 2013-04-03 | 自贡鑫剑密封科技有限公司 | H-shaped metal composite gasket |
| CN103939453A (en) * | 2014-05-12 | 2014-07-23 | 安徽孟凌精密电子有限公司 | Metal sealing gasket |
| CN105156676A (en) * | 2015-07-17 | 2015-12-16 | 滨州双峰石墨密封材料有限公司 | Multi-stage sealing graphite gasket |
| CN105972210A (en) * | 2016-07-11 | 2016-09-28 | 苏州宝骅机械技术有限公司 | Sealing gasket |
-
1997
- 1997-12-22 CN CN 97243252 patent/CN2314157Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425604A (en) * | 2006-02-01 | 2012-04-25 | 圣戈本操作塑料有限公司 | Composite gasket |
| CN103016732A (en) * | 2012-12-31 | 2013-04-03 | 自贡鑫剑密封科技有限公司 | H-shaped metal composite gasket |
| CN103939453A (en) * | 2014-05-12 | 2014-07-23 | 安徽孟凌精密电子有限公司 | Metal sealing gasket |
| CN105156676A (en) * | 2015-07-17 | 2015-12-16 | 滨州双峰石墨密封材料有限公司 | Multi-stage sealing graphite gasket |
| CN105156676B (en) * | 2015-07-17 | 2017-05-10 | 滨州双峰石墨密封材料有限公司 | Multi-stage sealing graphite gasket |
| CN105972210A (en) * | 2016-07-11 | 2016-09-28 | 苏州宝骅机械技术有限公司 | Sealing gasket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |