CN201531594U - Constant stress seal gasket capable of detecting leakage - Google Patents
Constant stress seal gasket capable of detecting leakage Download PDFInfo
- Publication number
- CN201531594U CN201531594U CN2009201894275U CN200920189427U CN201531594U CN 201531594 U CN201531594 U CN 201531594U CN 2009201894275 U CN2009201894275 U CN 2009201894275U CN 200920189427 U CN200920189427 U CN 200920189427U CN 201531594 U CN201531594 U CN 201531594U
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- China
- Prior art keywords
- seal ring
- end surface
- seal
- leakage
- outer shroud
- 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 - Lifetime
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Abstract
The utility model relates to a constant stress seal gasket capable of detecting leakage, which comprises an inner ring, an outer ring, a first seal ring arranged between the inner ring and the outer ring, and a second seal ring arranged on the outer side of the first seal ring. The upper end faces and the lower end faces of the first seal ring and the second seal ring respectively protrude from the upper end faces and the lower end faces of the outer ring and the inner ring and contact with a combining face of a connecting element to be sealed. A groove is formed by the outer circumferential surface of the first seal ring, partial lateral surface of the outer ring and the inner circumferential surface of the second seal ring, a sealed leakage-prevention cavity is formed by the groove and the combining face of the connecting element, and the cavity is communicated with the outside via a leakage hole. When leakage occurs on a first seal surface, medium enters the cavity and spreads to the outer side of the seal element via the leakage hole, and maintenance operators can quickly discover leakage by arranging detection devices such as a pressure gauge, a sensor or the like on the outer side of the leakage hole.
Description
Technical field
The utility model relates to a kind of leakage-detectable constant-stress Sealing.
Background technique
The nuclear level of can a hunting leak gasket seal belongs to highest level in the sealing grade of pad, it is mainly used in the system pipeline in the nuclear facility or the sealing occasion of other poisonous and hazardous high-risk chemical substance.The primary requirement of nuclear level gasket seal is exactly the zero leakage that reaches dangerous substance, in the prior art, gasket seal all be utilize the sealing surface of pad and link (being generally adpting flange) thus end face compress with certain seal pressure and guarantee sealing, but never the sealing situation to gasket seal detects, even sealing part exists a small amount of harmful matter to leak in the environment, also can't detect, have only when leakage situation is relatively more serious, just can arouse attention and detect, this belongs to passive detection mode, often when detection device detected the poisonous and harmful medium, it spread in environment and has caused security incident.
The model utility content
The purpose of this utility model provides a kind of gasket seal that can detect the sealing medium leakage situation, in case sealing surfaces leaks, the sealing pad can in time be reported to the police.
The concrete technological scheme that adopts of the utility model is: a kind of leakage-detectable constant-stress sealing gasket, it comprises ring in the metal, the metal outer shroud, be arranged on first seal ring between described interior ring and the outer shroud, be arranged on second seal ring in described first seal ring outside, the upper-end surface of described first seal ring and second seal ring and lower end surface protrude from the upper-end surface and the lower end surface of described outer shroud and interior ring respectively, described first seal ring contacts and seals with the junction plane of link respectively with the upper-end surface and the lower end surface of second seal ring, and the external peripheral surface of described first seal ring, the part side surface of described outer shroud and the inner circumferential surface of described second seal ring constitute groove, the junction plane of described groove and link just forms the anti-leak cavity of sealing, and described cavity is connected with the external world by Leak hole.
The utility model further technological scheme is: the seal pressure of described second seal ring is less than the seal pressure of described first seal ring.
Further, the upper-end surface of described first seal ring and lower end surface protrude from the upper-end surface and the lower end surface 0.1～10mm of described second seal ring respectively.
Further, described second seal ring comprises the upper-end surface that is separately positioned on described outer shroud and two diaphragm seals on the lower end surface.
Further, offer the groove that multiple tracks is along the circumferential direction extended respectively on the surface of contact between described diaphragm seal and the described outer shroud, and the groove interlock mutually on described diaphragm seal and the outer shroud, on the cross section of the shaft axis of crossing described outer shroud, being projected as of described groove is corrugated, zigzag fashion, rectangle.
Further, described Leak hole is opened on the described outer shroud.
Further, described Leak hole comprises the side opening that a through hole and an end are connected with described through hole, described through hole extends to the lower end surface of described outer shroud from the upper-end surface of described outer shroud, the other end of described side opening is connected with the external world, and described Leak hole is communicated with the cavity that lays respectively at described gasket seal both sides.
Further, offer a plurality of described Leak holes on the described outer shroud, and the through hole on a plurality of described Leak hole is evenly distributed in the described groove.
Further, also offer the connectivity slot that along the circumferential direction extends on the upper-end surface of described outer shroud and the lower end surface, described connectivity slot is communicated with each described through hole.
Further, described first seal ring is that graphite-seal ring, metal twine a kind of in seal ring, the cladding sealing ring.
Further, the diaphragm seal on described second seal ring is a kind of in Graphite pad, teflon gasket, the rubber sheet gasket.
Further, described Leak hole connects the detection device that leaks.
Further, the periphery of described gasket seal is provided with and is used to survey the detection device whether sealing medium leaks, and described detection device joins in described Leak hole.
During construction, described leakage-detectable constant-stress sealing gasket is clamped between the adpting flange of both sides, first seal ring seals mutually with the upper-end surface of second seal ring and the lower end surface of top adpting flange, first seal ring seals mutually with the lower end surface of second seal ring and the upper-end surface of below adpting flange, the groove that lays respectively at gasket seal upper-end surface and lower end surface forms two cavitys with the adpting flange of both sides respectively, therefore the both ends of the surface of first seal ring form first sealing surfaces, when there is leakage in first sealing surfaces, medium can enter in this cavity and by Leak hole and flow to the gasket seal outside, and two end faces of second seal ring form second sealing surfaces, can stop more substantial dielectric leakage, by cooperating detection devices such as pressure gauge or sensor, the maintenance man can find to leak soon.
Advantage of the present utility model is:
1, when first seal ring lost efficacy, second seal ring of the present utility model can stop the leaking medium that enters in the groove further to external world's diffusion, and guarantees that sealing medium just can be detected before leak in the external world;
2, the utility model not only can be realized supervision, measurement, the warning to the first sealing surfaces leakage situation, and for the minor leakage of first sealing surfaces, this airtight cavity can also store the medium of seepage, to avoid leaking into atmosphere, befouling environment;
Therefore 3, do not need vessel flange to have special leakage detecting structure and cooperate the competence exertion effect with it, practicability of the present utility model, versatility are stronger;
4, the seal pressure of second seal ring is less than the seal pressure of first seal ring, and the pretightening force that therefore can not make adpting flange tighten bolt increases a lot, thereby has reduced the extra stiffness demand to bolt and adpting flange, and versatility is stronger;
When 5, the seal pressure that bears when first seal ring is excessive,, the suffered unnecessary active force of first seal ring discharges because being transferred to radially, and in acting on ring and the outer shroud, so the power of the first seal ring reaction on adpting flange remains constant; Thereby make the seal pressure on first seal ring keep constant.
Description of drawings
Accompanying drawing 1 is a plan view of the present utility model;
Accompanying drawing 2 is along the sectional view of A-A in the accompanying drawing 1;
Accompanying drawing 3 is the scheme of installation of the utility model and adpting flange;
Wherein: 1, interior ring; 2, outer shroud; 3, first seal ring; 4, second seal ring; 5, Leak hole; 6, through hole; 7, side opening; 8, connectivity slot; 9, adpting flange; 10, junction plane; 11, cavity.
Embodiment
Referring to accompanying drawing 1 to shown in the accompanying drawing 3, a kind of leakage-detectable constant-stress sealing gasket, ring 1 in it comprises, outer shroud 2, be arranged on first seal ring 3 between described interior ring 1 and the outer shroud 2, be arranged on second seal ring 4 in described first seal ring 3 outsides, the upper-end surface of described first seal ring 3 and second seal ring 4 and lower end surface protrude from the upper-end surface and the lower end surface of described outer shroud 2 and interior ring 1 respectively, described first seal ring 3 contacts and seals with the junction plane 10 of adpting flange 9 respectively with the upper-end surface and the lower end surface of second seal ring 4, and the external peripheral surface of described first seal ring 3, the inner circumferential surface of the part side surface of described outer shroud 2 and described second seal ring 4 constitutes groove, the junction plane 10 of described groove and adpting flange 9 just forms the anti-leak cavity 11 of sealing, offer Leak hole 5 on the described outer shroud 2, described cavity 11 is connected with the external world by Leak hole 5.Be provided with in the described Leak hole 5 or in the described groove and be used to survey the detection device whether sealing medium leaks.
During construction, described leakage-detectable constant-stress sealing gasket is clamped between the adpting flange 19 of both sides, first seal ring 3 seals mutually with the upper-end surface of second seal ring 4 and the lower end surface of top adpting flange 19, first seal ring 3 seals mutually with the lower end surface of second seal ring 4 and the upper-end surface of below adpting flange 19, therefore the upper-end surface and the lower end surface of first seal ring 3 form first sealing surfaces, when there is leakage in first sealing surfaces, those leakages or the medium (gas that leaks out, liquid etc.) can enter in the cavity 11, medium and corresponding pressure will appear in this cavity 11, because the upper-end surface and the lower end surface of second seal ring 4 form second sealing surfaces, therefore medium can only flow to the gasket seal outside by Leak hole 5, detection devices such as pressure gauge or sensor are set by the outer end at Leak hole 5, and the maintenance man can find to leak soon.
Preferably, the seal pressure of described second seal ring 4 is less than the seal pressure of described first seal ring 3, specifically, the seal pressure of second seal ring 4 of this pad has only 0.01～0.9 of first seal ring, 3 seal pressures, therefore can be not extra roll up the pretightening force that adpting flange 19 tightens bolt, thereby reduced rigidity requirement to bolt and adpting flange 19.
Specifically, the upper-end surface of described first seal ring 3 exceeds the upper-end surface 0.1～10mm of described second seal ring 4; The lower end surface of described first seal ring 3 is above the lower end surface 0.1～10mm of described second seal ring 4.
In the present embodiment, as shown in Figure 2, described second seal ring 4 comprises the upper-end surface that is separately positioned on described outer shroud 2 and two diaphragm seals on the lower end surface.Diaphragm seal on described second seal ring 4 is a kind of in Graphite pad, teflon gasket, the rubber sheet gasket.
For increasing the join strength between diaphragm seal and the outer shroud 2, offer the groove that multiple tracks is along the circumferential direction extended respectively on the surface of contact between described diaphragm seal and the described outer shroud 2, and the groove interlock mutually on described diaphragm seal and the outer shroud, on the cross section of the shaft axis of crossing described outer shroud 2, described groove be projected as corrugated or zigzag fashion or rectangle or triangle etc.
Say further, described Leak hole 5 comprises the side opening 7 that a through hole 6 and an end are connected with described through hole 5, described through hole 6 extends to the lower end surface of described outer shroud 2 from the upper-end surface of described outer shroud 2, the other end of described side opening 7 is connected with the external world, described Leak hole 5 is communicated with the cavity 11 that lays respectively at described gasket seal both sides, upper and lower two face leakages of gasket seal like this, Leak hole 5 can both be derived medium.
Preferably, be plugged for preventing this Leak hole 5, and cause normally to detect leakage, offer a plurality of described Leak holes 5 on the described outer shroud, and the through hole 6 of a plurality of described Leak holes 5 is evenly distributed in the described groove.In general, preferred 2～4 of the quantity of Leak hole 5, each Leak hole 5 all is provided with detection device near the end on the gasket seal external peripheral surface, and so in a single day leak detecting device taking place will report to the police.
Say further, for also offering the connectivity slot 8 that along the circumferential direction extends on the upper-end surface of described outer shroud 2 and the lower end surface, described connectivity slot 8 is communicated with each described through hole 6, and the leaking medium that any position exists in the groove on the whole circumference direction can both be directed in the through hole 6 like this.
Described first seal ring 3 can select for use graphite-seal ring or metal to twine a kind of in seal ring or the cladding sealing ring.
Described in the specification " on ", upper and lower position relationship consistency in D score position relation and the accompanying drawing 2.
Claims (12)
1. leakage-detectable constant-stress sealing gasket, it is characterized in that: it comprises ring in the metal, the metal outer shroud, be arranged on first seal ring between described interior ring and the outer shroud, be arranged on second seal ring in described first seal ring outside, the upper-end surface of described first seal ring and second seal ring and lower end surface protrude from the upper-end surface and the lower end surface of described outer shroud and interior ring respectively, described first seal ring contacts and seals with the junction plane of link respectively with the upper-end surface and the lower end surface of second seal ring, and the external peripheral surface of described first seal ring, the part side surface of described outer shroud and the inner circumferential surface of described second seal ring constitute groove, the junction plane of described groove and link just forms the anti-leak cavity of sealing, offer Leak hole on the described outer shroud, described cavity is connected with the external world by this Leak hole.
2. leakage-detectable constant-stress sealing gasket according to claim 1 is characterized in that: the seal pressure of described second seal ring is less than the seal pressure of described first seal ring.
3. leakage-detectable constant-stress sealing gasket according to claim 2 is characterized in that: the upper-end surface of described first seal ring and lower end surface protrude from the upper-end surface and the lower end surface 0.1～10mm of described second seal ring respectively.
4. leakage-detectable constant-stress sealing gasket according to claim 1 is characterized in that: described second seal ring comprises the upper-end surface that is separately positioned on described outer shroud and two diaphragm seals on the lower end surface.
5. leakage-detectable constant-stress sealing gasket according to claim 4, it is characterized in that: offer the groove that multiple tracks is along the circumferential direction extended respectively on the surface of contact between described diaphragm seal and the described outer shroud, and the groove interlock mutually on described diaphragm seal and the outer shroud, on the cross section of the shaft axis of crossing described outer shroud, described groove be projected as corrugated or zigzag fashion or rectangle.
6. leakage-detectable constant-stress sealing gasket according to claim 1, it is characterized in that: described Leak hole comprises the side opening that a through hole and an end are connected with described through hole, described through hole extends to the lower end surface of described outer shroud from the upper-end surface of described outer shroud, the other end of described side opening is connected with the external world, and described Leak hole is communicated with the cavity that lays respectively at described gasket seal both sides.
7. leakage-detectable constant-stress sealing gasket according to claim 6 is characterized in that: offer a plurality of described Leak holes on the described outer shroud, and the through hole on a plurality of described Leak hole is evenly distributed in the described groove.
8. leakage-detectable constant-stress sealing gasket according to claim 7 is characterized in that: also offer the connectivity slot that along the circumferential direction extends on the upper-end surface of described outer shroud and the lower end surface, described connectivity slot is communicated with each described through hole.
9. leakage-detectable constant-stress sealing gasket according to claim 1 is characterized in that: described first seal ring is that graphite-seal ring, metal twine a kind of in seal ring, the cladding sealing ring.
10. leakage-detectable constant-stress sealing gasket according to claim 1 is characterized in that: the diaphragm seal on described second seal ring is a kind of in Graphite pad, teflon gasket, the rubber sheet gasket.
11. according to claim 1 or 2 or 6 described leakage-detectable constant-stress sealing gaskets, it is characterized in that: the periphery of described gasket seal is provided with and is used to survey the detection device whether sealing medium leaks, and described detection device joins in described Leak hole.
12. leakage-detectable constant-stress sealing gasket according to claim 1 is characterized in that: be provided with in the described Leak hole or in the described groove and be used to survey the detection device whether sealing medium leaks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201894275U CN201531594U (en) | 2009-09-30 | 2009-09-30 | Constant stress seal gasket capable of detecting leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201894275U CN201531594U (en) | 2009-09-30 | 2009-09-30 | Constant stress seal gasket capable of detecting leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201531594U true CN201531594U (en) | 2010-07-21 |
Family
ID=42526998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201894275U Expired - Lifetime CN201531594U (en) | 2009-09-30 | 2009-09-30 | Constant stress seal gasket capable of detecting leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201531594U (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080726A (en) * | 2011-02-01 | 2011-06-01 | 宁波天生密封件有限公司 | Intelligent controlled sealing gasket |
| CN102094970A (en) * | 2011-02-01 | 2011-06-15 | 宁波天生密封件有限公司 | Sealing gasket capable of controlling range of stress relaxation |
| CN101692353B (en) * | 2009-09-30 | 2011-11-23 | 马志刚 | Leakage-detectable constant-stress sealing gasket |
| CN102313016A (en) * | 2011-08-25 | 2012-01-11 | 中国石油化工股份有限公司 | Sealing control method for equipment |
| CN102678925A (en) * | 2012-05-23 | 2012-09-19 | 苏州宝骅机械技术有限公司 | Multi-stage constant stress sealing gasket |
| CN103267186A (en) * | 2013-06-20 | 2013-08-28 | 苏州柏德纳科技有限公司 | Flange gasket for automobile exhaust pipe |
| CN103456551A (en) * | 2013-01-24 | 2013-12-18 | 河南平高电气股份有限公司 | High-voltage switch barrel with easy leak detection function and high-voltage switch comprising high-voltage switch barrel |
| CN103456550A (en) * | 2013-01-24 | 2013-12-18 | 河南平高电气股份有限公司 | High-voltage switch barrel easy to detect and high-voltage switch comprising high-voltage switch barrel |
| CN103456429A (en) * | 2013-01-24 | 2013-12-18 | 河南平高电气股份有限公司 | Insulator easy to detect and high-voltage switch comprising insulator |
| CN103456553A (en) * | 2013-01-24 | 2013-12-18 | 河南平高电气股份有限公司 | High-voltage switch barrel and high-voltage switch using same |
| CN105089734A (en) * | 2014-05-14 | 2015-11-25 | 福特环球技术公司 | Engine Assembly With Passageway For Reducing Oil Leakage |
| CN105179725A (en) * | 2015-09-25 | 2015-12-23 | 马莉 | Sealing ring for valve and detecting device and detecting method using sealing ring |
| CN105422854A (en) * | 2015-12-29 | 2016-03-23 | 周庆涛 | Self-pressure test gasket and application method thereof |
| CN106050809A (en) * | 2016-07-18 | 2016-10-26 | 天津优瑞纳斯液压机械有限公司 | Ultra-high-pressure anti-explosion structure with transition joint |
| CN107401641A (en) * | 2017-08-11 | 2017-11-28 | 慧感(上海)物联网科技有限公司 | A kind of universal in-service online collecting mechanism of flange seal |
| CN112648384A (en) * | 2020-12-30 | 2021-04-13 | 苏州宝骅密封科技股份有限公司 | Medium self-tightening sealing device |
| CN113686523A (en) * | 2021-08-25 | 2021-11-23 | 重庆川仪调节阀有限公司 | Gasket sealing performance detection method |
-
2009
- 2009-09-30 CN CN2009201894275U patent/CN201531594U/en not_active Expired - Lifetime
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101692353B (en) * | 2009-09-30 | 2011-11-23 | 马志刚 | Leakage-detectable constant-stress sealing gasket |
| CN102094970A (en) * | 2011-02-01 | 2011-06-15 | 宁波天生密封件有限公司 | Sealing gasket capable of controlling range of stress relaxation |
| WO2012103674A1 (en) * | 2011-02-01 | 2012-08-09 | 宁波天生密封件有限公司 | Intelligent controllable sealing gasket |
| WO2012103673A1 (en) * | 2011-02-01 | 2012-08-09 | 宁波天生密封件有限公司 | Sealing gasket whose stress relaxation ratio is in a controllable range |
| CN102080726A (en) * | 2011-02-01 | 2011-06-01 | 宁波天生密封件有限公司 | Intelligent controlled sealing gasket |
| CN102313016B (en) * | 2011-08-25 | 2014-08-27 | 中国石油化工股份有限公司 | Sealing control method for equipment |
| CN102313016A (en) * | 2011-08-25 | 2012-01-11 | 中国石油化工股份有限公司 | Sealing control method for equipment |
| CN102678925A (en) * | 2012-05-23 | 2012-09-19 | 苏州宝骅机械技术有限公司 | Multi-stage constant stress sealing gasket |
| CN103456550B (en) * | 2013-01-24 | 2016-05-04 | 河南平高电气股份有限公司 | A kind of easy inspection formula high-voltage switch gear cylindrical shell and use the high-voltage switch gear of this cylindrical shell |
| CN103456550A (en) * | 2013-01-24 | 2013-12-18 | 河南平高电气股份有限公司 | High-voltage switch barrel easy to detect and high-voltage switch comprising high-voltage switch barrel |
| CN103456429A (en) * | 2013-01-24 | 2013-12-18 | 河南平高电气股份有限公司 | Insulator easy to detect and high-voltage switch comprising insulator |
| CN103456553A (en) * | 2013-01-24 | 2013-12-18 | 河南平高电气股份有限公司 | High-voltage switch barrel and high-voltage switch using same |
| CN103456551A (en) * | 2013-01-24 | 2013-12-18 | 河南平高电气股份有限公司 | High-voltage switch barrel with easy leak detection function and high-voltage switch comprising high-voltage switch barrel |
| CN103456551B (en) * | 2013-01-24 | 2016-05-04 | 河南平高电气股份有限公司 | A kind of high-voltage switch gear cylindrical shell of easy leak detection and use the high-voltage switch gear of this cylindrical shell |
| CN103267186A (en) * | 2013-06-20 | 2013-08-28 | 苏州柏德纳科技有限公司 | Flange gasket for automobile exhaust pipe |
| CN105089734A (en) * | 2014-05-14 | 2015-11-25 | 福特环球技术公司 | Engine Assembly With Passageway For Reducing Oil Leakage |
| CN105089734B (en) * | 2014-05-14 | 2019-07-09 | 福特环球技术公司 | Band is reduced the engine assembly in oil leakage channel |
| US10443458B2 (en) | 2014-05-14 | 2019-10-15 | Ford Global Technologies, Llc | Engine assembly with passageway for reducing oil leakage |
| CN105179725A (en) * | 2015-09-25 | 2015-12-23 | 马莉 | Sealing ring for valve and detecting device and detecting method using sealing ring |
| CN105422854A (en) * | 2015-12-29 | 2016-03-23 | 周庆涛 | Self-pressure test gasket and application method thereof |
| CN106050809A (en) * | 2016-07-18 | 2016-10-26 | 天津优瑞纳斯液压机械有限公司 | Ultra-high-pressure anti-explosion structure with transition joint |
| CN107401641A (en) * | 2017-08-11 | 2017-11-28 | 慧感(上海)物联网科技有限公司 | A kind of universal in-service online collecting mechanism of flange seal |
| CN107401641B (en) * | 2017-08-11 | 2023-08-18 | 慧感(上海)物联网科技有限公司 | On-line collection mechanism for universal in-service flange seal |
| CN112648384A (en) * | 2020-12-30 | 2021-04-13 | 苏州宝骅密封科技股份有限公司 | Medium self-tightening sealing device |
| CN113686523A (en) * | 2021-08-25 | 2021-11-23 | 重庆川仪调节阀有限公司 | Gasket sealing performance detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100721 Effective date of abandoning: 20090930 |