CN202274096U - Embedded type graphite metal gasket - Google Patents
Embedded type graphite metal gasket Download PDFInfo
- Publication number
- CN202274096U CN202274096U CN2011203595792U CN201120359579U CN202274096U CN 202274096 U CN202274096 U CN 202274096U CN 2011203595792 U CN2011203595792 U CN 2011203595792U CN 201120359579 U CN201120359579 U CN 201120359579U CN 202274096 U CN202274096 U CN 202274096U
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Abstract
The utility model relates to sealing gaskets, in particular to an embedded type graphite metal gasket, which mainly solves the technical problems, in the prior art, that the load of the gasket, comprising dead load, pressure, external bending moment and temperature, abruptly changes, the adjustment result on these changes of loads by the gasket is bound to increase or decrease a counterforce, and finally, the creep relaxation is increased or the risk of leakage is increased and the like. The embedded type graphite metal gasket comprises stainless steel inner supporting rings (1); stainless steel outer positioning rings (2) are arranged outside the stainless steel inner supporting rings; and the embedded type graphite metal gasket is characterized in that flexible graphite rings (3) are arranged between the stainless steel inner supporting rings (1) and the stainless steel outer positioning rings (2) in an embedding manner, the thickness of the flexible graphite rings is greater than that of the stainless steel inner supporting rings and the stainless steel outer positioning rings.
Description
Technical field
The utility model relates to a kind of gasket seal, especially relates to a kind of embedded graphite metallic shim.
Background technique
Sealing is that metal does not contact the perhaps bolt flange gasket seal of float type with metal for the conventional bolt flange gasket: bolt load all acts on the surface of contact of flange facing and pad; The plastic deformation that pad takes place is used to fill the various both macro and micro defectives of sealing surfaces, to block fluid-encapsulated leakage through flange facing.Chinese patent discloses a kind of graphite composite sealing pad (notice of authorization number: CN201434070); Its gasket seal is by one deck graphite grazing layer and one deck layers of reinforcement constitute at least; Be provided with adhesive layer between graphite grazing layer and the layers of reinforcement, graphite grazing layer and layers of reinforcement are through the bonding back of adhesive layer pressing and forming; The graphite grazing layer comprises sealing layer and lower seal layer; Layers of reinforcement is located between sealing layer and the lower seal layer; Layers of reinforcement and said upward sealing layer and said lower seal interlayer are gripped with said adhesive layer respectively, and last sealing layer, layers of reinforcement and lower seal interlayer are bonding after pressing and forming through said two adhesive layers; The graphite grazing layer is processed by flexible pure graphite material, and layers of reinforcement is a metal plate, and metal plate is aluminium sheet or steel plate, and the thickness of metal plate is less than 0.3mm.This pad bolt load under the pretension state is equal to the pad reaction force, and in the whole service cycle, initial pad reaction force by from various inside or (with) the external load effect, the change of part has taken place.These load comprise the unexpected variation of deadweight, pressure, outer moment of flexure and temperature etc.Pad certainly will make its reaction force or increase or minimizing to the adjusting result of these load variations, brings the most at last and strengthens creep relaxation or increase the risk of leaking.
The model utility content
The utility model provides a kind of embedded graphite metallic shim; It mainly is the unexpected variation that the load that solves the existing in prior technology pad comprises deadweight, pressure, outer moment of flexure and temperature; Pad is to the adjusting result of these load variations; Certainly will make its reaction force or increase or minimizing, bring the technical problem that strengthens creep relaxation or increase the risk of leaking etc. the most at last.
Above-mentioned technical problem of the present invention mainly is able to solve through following technical proposals:
The embedded graphite metallic shim of the utility model; Comprise the stainless steel inside support ring; The stainless steel inside support ring is provided with the stainless steel outer positioning ring outward; Be embedded with the Expanded graphite ring between described stainless steel inside support ring and the stainless steel outer positioning ring, the thickness of Expanded graphite ring is greater than the thickness of stainless steel inside support ring, stainless steel outer positioning ring.The innovative point of the utility model: in the middle of austenitic stainless steel outer positioning ring of low hardness and stainless steel inside support ring, embed a high-purity Expanded graphite ring.The stainless steel outer positioning ring hardness be HB≤140.The pad that is combined by Expanded graphite ring and stainless steel inside support ring, stainless steel outer positioning ring places between two prominent sealing surfaces of flange; Stainless steel inside support ring, stainless steel outer positioning ring play limit collar and play support and restriction graphite annulus; The outer surface of low hardness Austenitic Stainless Steel outer positioning ring of simultaneously filling high purity graphite through solution treatment design waveform is because contact in advance; Therefore the Expanded graphite ring is played the effect of auxiliary seal, flexible graphite material has excellent ductility, heat resistance, chemical resistance and corrosion resistance simultaneously.During assembling, bolt pretightening makes metal flange and the outer loop contacts of metal earlier, and then the bolt force of appending a certain size.During operation, the bolt force of appending has compensated interior pressure and the minimizing to pad stress such as other mechanical loads, thermal cycle, mechanical vibration.Flexible graphite gasket through precise design can obtain than better mechanical property of spiral wound gaskets and sealability, and has lower pretension bolt power, better to the adaptability of load fluctuation and the repeatability of performance.
As preferably, the internal surface of the outer surface of described stainless steel inside support ring, stainless steel outer positioning ring is provided with groove, and the Expanded graphite ring is provided with fin and is embedded in the groove.Combination between each component is tightr like this.
As preferably, the inner outer surface up and down of described stainless steel outer positioning ring all is filled with the high purity graphite undulated layer, and the Expanded graphite ring is played the effect of auxiliary seal, makes sealing effect better.The stainless steel outer positioning ring is through solution treatment hardness HB≤140.
Therefore, the utility model can obtain than better mechanical property of spiral wound gaskets and sealability, and has lower pretension bolt power, and is better to the adaptability of load fluctuation and the repeatability of performance, simple and reasonable for structure.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the utility model.
Component, position and numbering among the figure: stainless steel inside support ring 1, stainless steel outer positioning ring 2, Expanded graphite ring 3, fin 4, high purity graphite undulated layer 5.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technological scheme of the utility model.
Embodiment: the embedded graphite metallic shim that this is routine, like Fig. 1, a stainless steel inside support ring 1 is arranged, the stainless steel inside support ring is provided with stainless steel outer positioning ring 2 outward, and the inner outer surface up and down of stainless steel outer positioning ring all is filled with high purity graphite undulated layer 5.Be embedded with Expanded graphite ring 3 between stainless steel inside support ring and the stainless steel outer positioning ring, the internal surface of the outer surface of stainless steel inside support ring, stainless steel outer positioning ring is provided with groove, and the Expanded graphite ring is provided with fin 4 and is embedded in the groove.The thickness of Expanded graphite ring is greater than the thickness of stainless steel inside support ring, stainless steel outer positioning ring.
During use, will place by the pad that Expanded graphite ring 3 and stainless steel inside support ring 1, stainless steel outer positioning ring 2 combine between two prominent sealing surfaces of flange to get final product.
This performance of products index can satisfy nuclear level sealing usage requirement.
The above is merely specific embodiment of the present invention, but structure characteristic of the present invention is not limited thereto, and any those skilled in the art is in the field of the invention, and the variation of being done or modify all is encompassed among the claim of the present invention.
Claims (3)
1. embedded graphite metallic shim; Comprise stainless steel inside support ring (1); The stainless steel inside support ring is provided with stainless steel outer positioning ring (2) outward; It is characterized in that being embedded with Expanded graphite ring (3) between described stainless steel inside support ring (1) and the stainless steel outer positioning ring (2), the thickness of Expanded graphite ring is greater than the thickness of stainless steel inside support ring, stainless steel outer positioning ring.
2. embedded graphite metallic shim according to claim 1; It is characterized in that the outer surface of described stainless steel inside support ring (1), the internal surface of stainless steel outer positioning ring (2) are provided with groove, Expanded graphite ring (3) is provided with fin (4) and is embedded in the groove.
3. embedded graphite metallic shim according to claim 1 and 2 is characterized in that the inner outer surface up and down of described stainless steel outer positioning ring (2) all is filled with high purity graphite undulated layer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203595792U CN202274096U (en) | 2011-09-23 | 2011-09-23 | Embedded type graphite metal gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203595792U CN202274096U (en) | 2011-09-23 | 2011-09-23 | Embedded type graphite metal gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202274096U true CN202274096U (en) | 2012-06-13 |
Family
ID=46194457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203595792U Expired - Lifetime CN202274096U (en) | 2011-09-23 | 2011-09-23 | Embedded type graphite metal gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202274096U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106224551A (en) * | 2016-08-31 | 2016-12-14 | 苏州宝骅机械技术有限公司 | Gasket seal |
| CN106224550A (en) * | 2016-08-31 | 2016-12-14 | 苏州宝骅机械技术有限公司 | A kind of gasket seal |
| CN109737255A (en) * | 2019-01-25 | 2019-05-10 | 郑州中海威环保科技有限公司 | A kind of rubber lining pipe fitting high pressure seal structure |
| WO2020099859A1 (en) * | 2018-11-15 | 2020-05-22 | Edwards Limited | Seal for a vacuum pump |
| CN113700959A (en) * | 2021-08-27 | 2021-11-26 | 中国核动力研究设计院 | Sealing structure |
-
2011
- 2011-09-23 CN CN2011203595792U patent/CN202274096U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106224551A (en) * | 2016-08-31 | 2016-12-14 | 苏州宝骅机械技术有限公司 | Gasket seal |
| CN106224550A (en) * | 2016-08-31 | 2016-12-14 | 苏州宝骅机械技术有限公司 | A kind of gasket seal |
| WO2020099859A1 (en) * | 2018-11-15 | 2020-05-22 | Edwards Limited | Seal for a vacuum pump |
| CN113302422A (en) * | 2018-11-15 | 2021-08-24 | 爱德华兹有限公司 | Seal for vacuum pump |
| CN113302422B (en) * | 2018-11-15 | 2023-08-29 | 爱德华兹有限公司 | Seal for vacuum pump |
| US11761452B2 (en) | 2018-11-15 | 2023-09-19 | Edwards Limited | Seal for a vacuum pump |
| CN109737255A (en) * | 2019-01-25 | 2019-05-10 | 郑州中海威环保科技有限公司 | A kind of rubber lining pipe fitting high pressure seal structure |
| CN109737255B (en) * | 2019-01-25 | 2023-12-19 | 郑州中海威环保科技有限公司 | High-pressure sealing structure for rubber lining pipe fitting |
| CN113700959A (en) * | 2021-08-27 | 2021-11-26 | 中国核动力研究设计院 | Sealing structure |
| CN113700959B (en) * | 2021-08-27 | 2023-10-24 | 中国核动力研究设计院 | Sealing structure |
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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: 20170223 Address after: 311255 Hangzhou Town, Xiaoshan District, Zhejiang, Pu Yang Town, Taoyuan Patentee after: Zhejiang Guotai Xiao Xing sealing material Limited by Share Ltd Address before: 311255 Zhejiang, Xiaoshan City, the town of Yang Yang Lake Village Patentee before: Guotai Seal Material Co., Ltd., Zhejiang Prov. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120613 |