CN202708061U - Multi-stage constant stress sealing gasket - Google Patents
Multi-stage constant stress sealing gasket Download PDFInfo
- Publication number
- CN202708061U CN202708061U CN 201220233711 CN201220233711U CN202708061U CN 202708061 U CN202708061 U CN 202708061U CN 201220233711 CN201220233711 CN 201220233711 CN 201220233711 U CN201220233711 U CN 201220233711U CN 202708061 U CN202708061 U CN 202708061U
- Authority
- CN
- China
- Prior art keywords
- metal
- ring
- constant stress
- sealing
- gasket seal
- 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.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model discloses a multi-stage constant stress sealing gasket, comprising a metal inner ring, a metal outer ring and a flexible filler arranged between the metal inner ring and the metal outer ring. The upper surface and the lower surface on the inner side of the metal inner ring are tooth-shaped or wave-shaped; one-stage seal is formed between the upper and lower surfaces on the inner side of the metal inner ring and a connector; the upper surface and the lower surface on the outer side of the metal inner ring are also tooth-shaped or wave-shaped and coated with a flexible cladding; second-stage seal is formed between the flexible cladding and the connector; the upper surface and the lower surface of the flexible filler are protruded from the upper and lower surfaces of the metal inner ring and the metal outer ring respectively; and third-stage seal in a surface contact sealing structural type is formed between the upper and lower surfaces of the flexible filler and the connector. The multi-stage constant stress sealing gasket meets the sealing requirement of high temperature and high pressure, ensures constant sealing stress under alternate load, and is widely applicable to sealing in the industries of nuclear, petroleum, chemicals, supercritical thermal power, and the like.
Description
Technical field
The utility model relates to a kind of Sealing, be particularly related to and a kind ofly be suitable for high temperature, high pressure and with the pressurized container under the harsh working condition such as the alternate load that is formed by thermal shock (thermal cycle), pressure medium fluctuation etc., such as heat exchanger, reaction vessel and seal for pipe joints in the hydrocracking reaction device, and the gasket seal of the sealing such as the valve of severe rugged environment.
Background technique
Under the working condition of high temperature, high pressure and chemical reaction, such as the hydrocracking reaction device, need various types of static seals, change the alternate load that causes because the particularity of technique, device have by thermal shock (thermal cycle) and pressure, adopt gasket seal for tradition, such as spiral wound gasket, the metal octangonal ring, metal oval ring, corrugated serrated compound gasket, grooved metal gasket etc. all can't satisfy the seal request in the alternate load situation.Therefore for the sealing under the harsh working condition, need to provide the very comprehensive Sealing of a kind of comprehensive sealing to satisfy sealing.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and a kind of seal request that can satisfy High Temperature High Pressure is provided, and can guarantee again to guarantee under alternate load the constant multistage constant stress gasket seal of Sealing Stress.
For solving above technical problem, the utility model is taked following technological scheme:
A kind of multistage constant stress gasket seal, it comprises ring, metal outer shroud in the metal, is arranged on the flexible packing between the interior ring of metal and the metal outer shroud, wherein: upper surface and the lower surface of the inside part of ring are profile of tooth or waveform in the metal, and forming structural type between the upper surface of the inside part of ring and lower surface and the link in this metal is the primary seal of line contact sealing; Upper surface and the lower surface of the external lateral portion of ring also are profile of tooth or waveform in the metal, and the upper surface of the external lateral portion that encircles in this metal and lower surface are covered with flexible coating, and forming structural type between this flexibility coating and the link is the secondary seal of line contact sealing; The upper and lower surface of flexible packing is protruded respectively the upper and lower surface of ring and metal outer shroud in the metal, and with link between to form structural type be that face contacts three grades of sealings that seal.
According to further embodiment of the present utility model, the material of ring can be Austenitic Stainless Steel, nife, Ti metal or titanium alloy etc. in the described metal.Described flexible coating can be for Expanded graphite, teflon, without asbestos, mica or soft metal etc.Described flexible packing can for Expanded graphite, teflon, without asbestos, mica or soft metal etc., be preferably Expanded graphite.
According to a preferred aspect of the present utility model, the material of ring is Austenitic Stainless Steel, nife in the metal, and the flexible coating of Ti metal or titanium alloy is Expanded graphite, teflon, without asbestos, mica or soft metal; Flexible packing is Expanded graphite, teflon, without asbestos, mica or soft metal.
According to the utility model, the profile of tooth number of the upper surface of the inside part of ring and external lateral portion and lower surface or crest number can be for one or more in the metal, and be preferably a plurality of.
Because the enforcement of above technological scheme, the utility model compared with prior art has following advantage:
Gasket seal of the present utility model is line contact sealing contacts seal combination with face three grades of sealing configuration forms, wherein, in the metal ring be the primary seal ring also be the metal frame of secondary seal, be again the interior ring of three grades of seal rings; Be covered in the flexible coating of ring external lateral portion in the metal, energy effective compensation link is the defective of flanged surface for example, avoids the direct contact of metal to metal, can reliably closely be combined with link; Flexible packing is three grades of sealings, and it has high rebound elasticity, but the Sealing Stress that the generations strains such as clamping bolt that effective compensation causes because of thermal shock and pressure surge cause is lost; The metal outer shroud plays the role of positioning when pad is installed, and also is the overload stresses storage simultaneously, but the Sealing Stress that the factors such as effective compensation thermal shock (thermal cycle), pressure surge cause disappearance guarantees that also seal ring avoids transshipping conquassation.Therefore, gasket seal of the present utility model can satisfy the seal request of High Temperature High Pressure, can guarantee that under alternate load Sealing Stress is constant again, even under harsh working condition, also property assurance sealing is safe and reliable, thereby can be widely used in the sealing of the industries such as nuclear industry, oil, chemical industry, supercritical thermal power.
Description of drawings
The utility model is described in more detail below in conjunction with accompanying drawing and specific embodiment:
Fig. 1 is the structural representation according to multistage constant stress gasket seal of the present utility model;
Wherein: 1, ring in the metal; 10, inside part; 11, external lateral portion; 2, metal outer shroud; 3, flexible packing; 4, flexible coating.
Embodiment
As shown in Figure 1, comprise according to the multistage constant stress gasket seal of present embodiment and encircle 1 in the metal, metal outer shroud 2, be arranged on flexible packing 3 and flexible coating 4 between the ring 1 and metal outer shroud 2 in the metal.
Upper surface and the lower surface of the inside part 10 of ring 1 are profile of tooth or waveform in the metal, the upper surface of the inside part 10 of ring 1 and lower surface and link in this metal (are such as flange etc., demonstration among the figure) forming structural type between is the primary seal of line contact sealing, the upper surface of inside part 10 and lower surface can be for encircling material own, also can compound other soft alloy or nonmetal, profile of tooth number or crest number can be for one or more, and the material of ring 1 can be Austenitic Stainless Steel, nife etc. in the metal.
Upper surface and the lower surface of the external lateral portion 11 of ring 1 are waveform in the metal.Described flexible coating 4 is covered on the upper surface and lower surface of this external lateral portion 11.Forming structural type between this flexibility coating 4 and the link is the secondary seal of line contact sealing.Flexible coating 4 can be Expanded graphite or other flexible material, provides mechanical support by ring 1 in the metal, can determine sealability according to thickness, ripple spacing and the ripple height of metal.
Flexible packing 3 be Expanded graphite, and its upper and lower surface is protruded respectively the upper and lower surface of ring and metal outer shroud in the metal, and with link between formation structural type be that face contacts three grades of sealings that seal.Flexible packing 3 has very high rebound elasticity, but the dense envelope stress that the generations strains such as clamping bolt that effective compensation causes because of thermal shock and pressure surge cause lacks.
Metal outer shroud 2 plays the role of positioning when pad is installed, and also is the overload stresses storage simultaneously, but the Sealing Stress that the factors such as effective compensation thermal shock (thermal cycle), pressure surge cause disappearance guarantees that also seal ring avoids transshipping conquassation.
The multistage constant stress gasket seal of present embodiment has following features:
1, multistage constant stress gasket seal with the rational composite design of multiple sealing configuration together, and different materials is done good fit, thereby make seal ring have very high comprehensive sealing.
2, the principle of multistage constant stress gasket seal is multi-stage sealed, makes as far as possible that primary seal and sealing medium are minimum to be contacted, and can effectively prevent primary seal material and medium generation chemical reaction, avoids pad that the gasket seal performance was lost efficacy.
3, consist of the multistage dense seal ring of multistage constant stress gasket seal, reduced from inside to outside by the probability of dielectric corrosion, and the anti-corrosion capacity of sealing gasket own increases from outside to inside.This project organization can very effectively reduce sealing gasket by the possibility of dielectric corrosion, to guarantee the effective sealing of sealing gasket.
But the dense envelope stress disappearance that the generation strains such as clamping bolt that 4 effective compensations cause because of thermal shock and pressure surge cause guarantees that sealing is effectively lasting.
5, can effective compensation the defective of flanged surface, and can effectively prevent gasket seal by conquassation, blow out, have excellent reliability.
6, have excellent corrosion resistance, high-low temperature resistant and good compression resilience reach the characteristics such as low pretightening force, can guarantee that pad has excellent sealability and permanent working life.
More than the utility model has been done detailed description; its purpose is to allow the personage that is familiar with this art can understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to Spirit Essence of the present utility model change or modify, and all should be encompassed in the protection domain of the present utility model.
Claims (6)
1. multistage constant stress gasket seal, it is characterized in that: described multistage constant stress gasket seal comprises ring, metal outer shroud in the metal, is arranged on the flexible packing between the interior ring of described metal and the described metal outer shroud, wherein: upper surface and the lower surface of the inside part of ring are profile of tooth or waveform in the described metal, and forming structural type between the upper surface of the inside part of ring and lower surface and the link in this metal is the primary seal of line contact sealing; Upper surface and the lower surface of the external lateral portion of ring also are profile of tooth or waveform in the described metal, and the upper surface of the external lateral portion that encircles in this metal and lower surface are covered with flexible coating, and forming structural type between this flexibility coating and the described link is the secondary seal of line contact sealing; The upper and lower surface of described flexible packing is protruded respectively the upper and lower surface of ring and described metal outer shroud in the described metal, and with described link between to form structural type be that face contacts three grades of sealings that seal.
2. multistage constant stress gasket seal according to claim 1 is characterized in that: the material of ring is Austenitic Stainless Steel, nife, Ti metal or titanium alloy in the described metal.
3. multistage constant stress gasket seal according to claim 1 is characterized in that: the material of described flexible coating is Expanded graphite, teflon, without asbestos, mica or soft metal.
4. multistage constant stress gasket seal according to claim 1 is characterized in that: described flexible packing is Expanded graphite, teflon, without asbestos, mica or soft metal.
5. multistage constant stress gasket seal according to claim 1 is characterized in that: the material of ring is Austenitic Stainless Steel, nife in the described metal, Ti metal or titanium alloy; The material of described flexible coating is Expanded graphite, teflon or without asbestos; Described flexible packing is Expanded graphite, teflon, without asbestos, mica or soft metal.
6. multistage constant stress gasket seal according to claim 1 is characterized in that: the inside part of ring and the upper surface of external lateral portion and profile of tooth number or the crest number of lower surface are one or more in the described metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220233711 CN202708061U (en) | 2012-05-23 | 2012-05-23 | Multi-stage constant stress sealing gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220233711 CN202708061U (en) | 2012-05-23 | 2012-05-23 | Multi-stage constant stress sealing gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202708061U true CN202708061U (en) | 2013-01-30 |
Family
ID=47588367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220233711 Withdrawn - After Issue CN202708061U (en) | 2012-05-23 | 2012-05-23 | Multi-stage constant stress sealing gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202708061U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2012
- 2012-05-23 CN CN 201220233711 patent/CN202708061U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102678925B (en) * | 2012-05-23 | 2014-04-16 | 苏州宝骅机械技术有限公司 | Multi-stage constant stress sealing gasket |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102678925B (en) | Multi-stage constant stress sealing gasket | |
| CN105910474B (en) | More tubular sheet heat exchangers | |
| CN205980874U (en) | Carborundum shell and tube heat exchanger | |
| CN102644738A (en) | Metal winding gasket | |
| CN104089119B (en) | A kind of flange assembly for being applied to HTHP and its fluctuation operating mode | |
| CN204420391U (en) | A kind of flange sealing structure based on wave tooth composite gasket | |
| CN202708061U (en) | Multi-stage constant stress sealing gasket | |
| CN204420390U (en) | A kind of novel flange sealing configuration | |
| CN208295110U (en) | A kind of stacking gasket | |
| CN204628872U (en) | A kind of stepped tooth contact flange | |
| CN104358874B (en) | A kind of high compression resilience seal assembly high | |
| CN206419593U (en) | Winding-type metallic gasket | |
| CN103775780A (en) | Anti-torsion corrugated compensator | |
| CN203272775U (en) | High-pressure graphite metal gasket with edges wrapped internally and externally | |
| CN203963006U (en) | A kind of high-strength graphite Composition spacer | |
| CN204239750U (en) | A kind of high compression height resilience black box | |
| CN204437540U (en) | Integral-type insulating joint | |
| CN216343895U (en) | Low-temperature-resistant graphite filling winding gasket | |
| CN206572102U (en) | Spiral wound gaskets | |
| CN205896251U (en) | High temperature ball valve that floats sealed firmly | |
| CN205896165U (en) | Dish flexible graphite metal corrugated metal gaskets | |
| CN204437284U (en) | The withstand voltage graphite annulus of a kind of high strength | |
| CN204647298U (en) | A kind of spiral wound gaskets of high temperature high voltage resistant | |
| CN202326651U (en) | Composite metal corrugated flange gasket | |
| CN204878717U (en) | Flange structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130130 Effective date of abandoning: 20140416 |
|
| RGAV | Abandon patent right to avoid regrant |