CN208519048U - A kind of Novel combined seal gasket - Google Patents
A kind of Novel combined seal gasket Download PDFInfo
- Publication number
- CN208519048U CN208519048U CN201821121302.4U CN201821121302U CN208519048U CN 208519048 U CN208519048 U CN 208519048U CN 201821121302 U CN201821121302 U CN 201821121302U CN 208519048 U CN208519048 U CN 208519048U
- Authority
- CN
- China
- Prior art keywords
- gasket
- seal
- fixed
- ring
- outer ring
- 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
Links
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model relates to a kind of Novel combined seal gaskets, comprising: inner ring, outer ring and intermediate seal gasket, gasket seal are located among compound gasket, have good compression recovery performance, mainly seal；Fixed inner and outer rings are located at the inside and outside circle of gasket seal, play positioning and limit gasket radial deformation, and the connection type of gasket seal and fixed ring is unlimited, can be clamping, bonding or other modes.The utility model can apply sufficiently large bolt pretightening under the premise of guaranteeing that material is not crushed, and be required with meeting sealing performance for extending gasket service life and different operation operating condition lower flange connector etc..
Description
Technical field
The utility model relates to a kind of Novel combined seal gaskets more particularly to a kind of comprehensive utilization inner and outer rings to play positioning
The sealing effect of gasket is able to achieve with limitation gasket radial deformation and compression resilience.
Background technique
Leading non-metallic gasket to be applied at present has rubber sheet gasket, teflon gasket and enhances rubber without asbestos fibre
Gasket etc..Rubber sheet gasket has high resiliency and lower creep properties, is able to maintain and seals matching surface and be preferably bonded and sealing connects
Stress is touched, reliable sealing is provided；Teflon gasket can generate the deformation of creep when compressing, and increase with the raising of temperature
Add.While the deformation of creep, the relaxation of gasket stress is caused, cold flow easily occurs, causes leakage to increase, seal failure；
Fiber in no asbestos fibre enhancing rubber sheet gasket is mainly used to improve the intensity of gasket, which can bear higher gasket and answer
Power has good compression strength, good creep resistant slackness.Although non-metallic gasket have good compression resilience and
Leakproofness, but excessive stress cannot be born, conquassation or pressure break phenomenon easily occur when gasket stress is too big.Bolt-flange-
Gasket seal system passes through flange bolt hole by means of connection bolt, applies under the action of bolt pretightening to flange sealing surface
Pressure promotes the gasket between two flange faces that plastic deformation or flexible deformation occurs, and then uneven between filling flange sealing surface
Microgap, to achieve the purpose that sealing.The loss of the mechanical integrity, spacer thickness of gasket may cause bolt flange to connect
The leakage of welding system, sealing performance are heavily dependent on the deformation-strength characteristic of material, with the increase of gasket stress, leakage
Rate decline, in flange erection stage, people often increase the pretightning force of bolt to guarantee the leakproofness of flange, gasket stress
Bigger, leakage will be fewer.But gasket stress it is too big when, gasket occur elastic-plastic deformation cause thickness rapidly be thinned (conquassation),
Solution fragmentation body (pressure break) may also occur.In actual installation, the size for controlling bolt pretightening is highly difficult, and bolt tightens sequence not
When gasket bending deformation may also be caused, sealing effect is influenced.
Summary of the invention
The purpose of the utility model is to provide a kind of Novel combined seal gaskets, and compound gasket is by inner ring, outer ring and centre
Gasket composition, inner and outer rings play a part of to position and limit gasket radial deformation.Gasket has good compression resilience
Can, it mainly seals, compression is on the one hand to fill up sealing to make gasket that elasticity or plastic deformation occur by pretightning force
On the other hand the leakage defect on surface eliminates the gap inside sealing material, to prevent fluid media (medium) from passing through sealing material itself
Leakage.Sealing surface caused by internal pressure separates when resilience performance compensates for work, and keeps having between gasket and sealing surface enough
Remaining pressing force.The connection type of gasket and fixed ring is unlimited, can be clamping, bonding or other modes, passes through fixation
Make the stable structure of compound gasket.
It is as follows that the utility model solves technical solution used by its technical problem:
A kind of Novel combined seal gasket, which is characterized in that the compound gasket includes: intermediate seal gasket 2, in fixation
Ring 3 and fixed outer ring 1；It the inner ring of intermediate seal gasket 2 and is contacted respectively with fixed inner ring 3 and fixed outer ring 1 with outer ring, by consolidating
Determine inner ring 3 and fixed outer ring 1 is fixed, the outer ring of the inner ring of fixed outer ring 1 and fixed inner ring 3 is processed into concave arc shape inclined-plane.
The fixation inner ring 3 and fixed outer ring 1 and the way of contact of intermediate seal gasket 2 are to be clamped or Nian Jie.
Fixed inner ring 3 and fixed outer ring 1 and 2 contact position of gasket seal are disposed as fillet.
The beneficial effects of the utility model are as follows:
(1) flange and the axially contact of compound gasket fixed ring limit the deformation of flange, make entire bolted flange joints
Bearing capacity increase；
(2) compound gasket combines that fixed ring material stiffness is big, intensity is big and the good compression rebound of gasket seal material
Performance, fixed ring limit its radial deformation, it is made to keep enough resilience performances；
(3) flange metal contacted with fixed ring ensure that gasket stress not with external applied load change and change, reduce its due to
Pre-tight stress is too big and causes the phenomenon that being crushed or rupturing, and improves the leakproofness of bump joint；
(4) assembly rear gasket has determining thickness, i.e. determining decrement, guarantees the enough resiliences of gasket and sealing
Performance avoids the degeneration of gasket material performance at any time；
(5) compound gasket realizes the function of guaranteeing structural intergrity and control leakproofness, prolongs the service life.
Detailed description of the invention
Fig. 1 is compound gasket structural schematic diagram
Fig. 2 is compound gasket top view
Fig. 3 is fixed ring, wherein (A) inner ring, (B) outer ring
Wherein: 1, fixed outer ring；2, gasket seal；3, fixed inner ring.
Specific embodiment
The utility model is further elaborated below by specific embodiment:
According to the comprehensive performance of material, fixed outer ring 1, fixed inner ring 3 make compound gasket stable structure, limit gasket seal
Excessive radial deformation guarantees that intermediate seal gasket will not be crushed or rupture because of becoming larger for external applied load.Fixation outer ring 1 is consolidated
Determining inner ring 3 can be selected the big metal material of rigidity, intensity, and the excellent nonmetallic materials of compression recovery performance can be selected in gasket seal 2.
In bolted flange joints, apply pretightning force, flange sealing surface is first contacted with diaphragm seal pad, and bolt load all acts on sealing
On piece pad.With being continuously increased for bolt load, flange sealing surface is moved closer to fixed ring until being in contact.Work as fixed ring
After flange contact, certain bolt load is continued to, this part bolt load is born by the fixed ring contacted, and diaphragm seal
Pad the stress maintenance constant on sealing surface.The bolt load that fixed ring undertakes is to Compensating flange joint contact surfaces stress
It reduces, and gasket seal face stress remains constant.Therefore, the gasket seal of the combination guarantees in limitation gasket radial deformation
Under the premise of material is not crushed, sufficiently large bolt pretightening can be applied, extend gasket service life and difference to meet
It operates sealing of operating condition lower flange connector etc. to require, and there is mechanical strength appropriate, sealed medium pressure can be resisted and caused
Blowout, be resistant to cause the shearing motion of flange pair because of temperature or mechanical load.
Claims (3)
1. a kind of Novel combined seal gasket, which is characterized in that the combination sealing gasket includes: intermediate seal gasket 2, fixed
Inner ring 3 and fixed outer ring 1；The inner ring and outer ring of intermediate seal gasket 2 is contacted with fixed inner ring 3 and fixed outer ring 1 respectively, by solid
Determine inner ring 3 and fixed outer ring 1 is fixed, the outer ring of the inner ring of fixed outer ring 1 and fixed inner ring 3 is processed into concave arc shape inclined-plane.
2. combination sealing gasket as described in claim 1, which is characterized in that the fixation inner ring 3 and fixed outer ring 1 are in
Between gasket seal 2 the way of contact be clamping or bonding.
3. combination sealing gasket as described in claim 1, which is characterized in that fixed inner ring 3 and fixed outer ring 1 and gasket seal
2 contact positions are disposed as fillet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821121302.4U CN208519048U (en) | 2018-07-16 | 2018-07-16 | A kind of Novel combined seal gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821121302.4U CN208519048U (en) | 2018-07-16 | 2018-07-16 | A kind of Novel combined seal gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208519048U true CN208519048U (en) | 2019-02-19 |
Family
ID=65335709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821121302.4U Expired - Fee Related CN208519048U (en) | 2018-07-16 | 2018-07-16 | A kind of Novel combined seal gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208519048U (en) |
-
2018
- 2018-07-16 CN CN201821121302.4U patent/CN208519048U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5750438B2 (en) | Cylinder head gasket | |
| CN204420391U (en) | A kind of flange sealing structure based on wave tooth composite gasket | |
| CN103016867A (en) | Combined gasket | |
| WO2021047669A1 (en) | Combined multi-end-face sealing rotary compensator | |
| CN107504186B (en) | A kind of adaptive transformation operating mode type assembly type rubber sealing structure | |
| CN208519048U (en) | A kind of Novel combined seal gasket | |
| CN214466538U (en) | Combined valve rod sealing structure | |
| CN105587869A (en) | Double-scraper diaphragm butterfly valve | |
| CN202646749U (en) | High-temperature high-pressure large-diameter overall forging wedged gate valve | |
| CN202100754U (en) | Metal sealing ball valve | |
| CN103982674A (en) | Top-mounting fixation ball valve | |
| CN209340496U (en) | Self-sealing gasket | |
| CN204664441U (en) | The two-way soft sealing butterfly valve of a kind of High Pressure Difference | |
| CN206299844U (en) | A kind of high-pressure check valve of low leakage | |
| CN202302270U (en) | Automatic packing sealing structure of high-pressure valve | |
| CN205689803U (en) | A kind of high-temperature metal seal ball valve | |
| CN204784765U (en) | Three eccentric low temperature butterfly valves | |
| CN111577926A (en) | XBL pipeline ball valve | |
| CN102242232A (en) | Three-eccentric cut-off butterfly valve of blast furnace | |
| CN205423918U (en) | Bolt manner fixes ball valve seating structure | |
| CN212643716U (en) | Self-sealing structure of valve | |
| CN216112294U (en) | Vacuum ball valve | |
| CN212480203U (en) | XBL pipeline ball valve | |
| CN110695658A (en) | Assembly process for valve seat of track ball valve | |
| CN217559281U (en) | Elastic sealing structure for high temperature and high pressure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |