CN206522334U - A kind of elastic self-tightening tooth form Composition spacer - Google Patents
A kind of elastic self-tightening tooth form Composition spacer Download PDFInfo
- Publication number
- CN206522334U CN206522334U CN201720224223.5U CN201720224223U CN206522334U CN 206522334 U CN206522334 U CN 206522334U CN 201720224223 U CN201720224223 U CN 201720224223U CN 206522334 U CN206522334 U CN 206522334U
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- China
- Prior art keywords
- tooth form
- form composition
- butterfly
- elastic self
- composition spacer
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Abstract
The utility model discloses a kind of elastic self-tightening tooth form Composition spacer, it includes locating ring (11), solid body (12), dish-shaped body (13) and coating (14)；The locating ring (11), solid body (12) and the coaxial integrally connected of dish-shaped body (13) three's ecto-entad；A co-axial annular groove (131) is offered on the inner ring surface of butterfly body (13)；The coating (14) has two, and two coatings (14) difference matching covers are in the upper surface of both solid body (12) and butterfly body (13) and lower surface.The utility model is in working condition, by under the medium internal pressure in annular groove and the double action of the sealing surface part automatic rebounding of butterfly body, remaining efficient sealing.
Description
Technical field
The utility model belongs to a kind of Composition spacer, more particularly to a kind of elastic self-tightening tooth form Composition spacer.
Background technology
Current bolt, pad and flange seal system are relaxed under high-temperature and high-pressure conditions due to the deformation of bolt, in pad
Enough end face stress or the pre-sealed face separation of flange can not be kept on piece, so as to cause seal failure to leak.So in this kind
HTHP or temperature alternating frequently under operating mode, keep efficient sealing, and the safe operation for chemical industry equipment is particularly weighed
Will.
Existing pad mainly uses SW with outside ring or tooth form Composition spacer etc., and pad is under high-temperature and high-pressure conditions
Compensation limited capacity, so general widespread practice is to install disk spring additional on bolt to provide enough compensation rates, make
Obtaining flange face and gasket seal face has enough end face stress.And on chemical industry equipment used in disk spring be limited to material and
Processing method, price is also higher.
The shortcoming of the existing technology mainly end face understrressing on pad because of bolt relaxation under HTHP, no
Efficient sealing can be reached.And it is higher to provide the method cost of compensation rate to install disc spring additional, safeguard again very inconvenient.
Utility model content
(1) technical problem to be solved
The technical problems to be solved in the utility model be to provide it is a kind of structurally simple, economical practical, easy to maintenance, and in height
The elastic self-tightening tooth form Composition spacer of efficient sealed performance is remained under warm high pressure.
(2) technical scheme
In order to solve the above technical problems, the utility model provides a kind of elastic self-tightening tooth form Composition spacer, it includes fixed
Position ring, solid body, dish-shaped body and coating；Locating ring, solid body and dish-shaped body three ecto-entad are coaxially integral
Connection；A co-axial annular groove is offered on the inner ring surface of butterfly body；Coating has two, two coatings
Matching cover is in the upper surface of both solid body and butterfly body and lower surface respectively.
Wherein, the thickness of locating ring is less than the thickness of solid body, and the inner ring surface of the locating ring is integrally connected to solid
The outer ring surface stage casing of body；The outer ring thickness of butterfly body is identical with the inner ring thicknesses of solid body, the outer ring surface of the butterfly body
Match integrally connected with the inner ring surface of solid body；The inner ring thicknesses of butterfly body are more than its outer ring thickness, the butterfly body
Upper surface and lower surface be in outer low and inner high inclined plane.
Wherein, the upper surface and lower surface of the solid body of coaxial integrally connected and butterfly body be uniform-distribution with by outside to
Interior annular tooth.
Wherein, the inclined plane that butterfly body is formed by the annular tooth of inner ring to outer shroud and horizontal plane shape a in an angle.
Wherein, locating ring, solid body and dish-shaped body three are made up of refractory metal material.
Wherein, coating is made up of high-temperature flexible graphite.
(3) beneficial effect
Compared with prior art, sealing pattern of the utility model according to tooth form Composition spacer, sealed using self-tightening
Principle, employs the dish-shaped sealing surface in part, and using the dish-shaped elastic construction of patch metal material, and it is former to combine the self-tightening of internal pressure
Reason, in HTHP, bolt can not be provided under the situation of enough end face pretightning forces, and dish-shaped self-tightening sealing structure can be kept all the time
Efficient sealing.The low advantage of the existing initial sealing pretightning force of sealing structure of the present utility model, the dish of pad inboard portion
Shape sealing surface is again flexible, can keep resilience all the time under the conditions of long-term use；When internal pressure and temperature are raised, pad
Inner chambers acted on by internal pressure, enough pretightning forces are produced on end face, even in bolt relaxation, flange sealing surface tends to
Under the situation of separation, it can keep all the time efficient sealed.And this kind of structure is because its elastic self-tightening structure has certain reply
Axially and radially impact capacity.
Brief description of the drawings
Fig. 1 is the structural representation of the elastic self-tightening tooth form Composition spacer of the utility model.
Fig. 2 is the partial structural diagram of the elastic self-tightening tooth form Composition spacer of the utility model.
Fig. 3 is the sealed effect of realization after the elastic self-tightening tooth form Composition spacer collocation flange of the utility model and bolt installation
Fruit is schemed.
Fig. 4 is the structural representation of elastic self-tightening tooth form Composition spacer of the utility model with size marking.
Fig. 5 is the partial structural diagram of elastic self-tightening tooth form Composition spacer of the utility model with size marking.
Fig. 6 is the design sketch before deformation when the elastic self-tightening tooth form Composition spacer of the utility model is installed.
Fig. 7 is the design sketch after deformation when the elastic self-tightening tooth form Composition spacer of the utility model is installed.
Fig. 8 be the utility model it is in running order under dish-shaped sealing surface part by medium internal pressure P design sketch.
Description of reference numerals：1st, elastic self-tightening tooth form Composition spacer；2nd, flange；3rd, bolt；11st, locating ring；12nd, it is solid
Body；13rd, dish-shaped body；14th, coating；15th, annular tooth；131st, annular groove.
Embodiment
With reference to the accompanying drawings and examples, embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but can not be used for limiting scope of the present utility model.
Fig. 1 is the structural representation of the elastic self-tightening tooth form Composition spacer of the utility model, major embodiment this elasticity oneself
Tight type tooth form Composition spacer 1 is made up of locating ring 11, solid body 12, dish-shaped body 13 and coating 14, and anti-emphatically
The co-axial annular groove 131 opened up on the inner ring surface for having reflected butterfly body 13；Fig. 2 is the elastic self-tightening of the utility model
The partial structural diagram of type tooth form Composition spacer, emphasis embodies annular tooth 15, and butterfly body 13 by inner ring to outer shroud
The inclined plane that is formed of annular tooth 15；Fig. 3 is the elastic self-tightening tooth form Composition spacer collocation flange of the utility model and bolt
Sealed design sketch is realized after installation；Fig. 4 is the knot of elastic self-tightening tooth form Composition spacer of the utility model with size marking
Structure schematic diagram, reflects the relative dimensions of elastic self-tightening tooth form Composition spacer 1；Fig. 5 is the utility model with size marking
The partial structural diagram of elastic self-tightening tooth form Composition spacer；Fig. 6 is the elastic self-tightening tooth form Composition spacer of the utility model
Design sketch before being deformed during installation；Fig. 7 is the effect after deformation when the elastic self-tightening tooth form Composition spacer of the utility model is installed
Figure；Fig. 8 be the utility model it is in running order under dish-shaped sealing surface part by medium internal pressure P design sketch.
The structure of the utility model elasticity self-tightening tooth form Composition spacer is as shown in figure 1, the elastic self-tightening tooth form is compound
Pad 1 includes locating ring 11, solid body 12, dish-shaped body 13 and coating 14；Locating ring 11, solid body 12 and dish are originally
The coaxial integrally connected of three's ecto-entad of body 13；A co-axial annular groove is offered on the inner ring surface of butterfly body 13
131；Coating 14 has two, and two difference matching covers of coating 14 are in both solid body 12 and butterfly body 13
Upper surface and lower surface.Sealing pattern of the utility model according to tooth form Composition spacer, using the sealed principle of self-tightening, is used
The dish-shaped sealing surface in part, using the dish-shaped elastic construction of pad, and combines the self-tightening principle of internal pressure, the spiral shell in HTHP
Bolt can not be provided under the situation of enough end face pretightning forces, and dish-shaped self-tightening sealing structure can keep efficient sealing all the time.
The low advantage of the existing initial sealing pretightning force of sealing structure of the present utility model, the dish sealing of pad inboard portion
Face is again flexible, can keep resilience all the time under the conditions of long-term use；When internal pressure and temperature are raised, the inner side of pad
Cavity is acted on by internal pressure, and enough pretightning forces are produced on end face, even in bolt relaxation, what flange sealing surface was tended to separate out
Under situation, it can keep all the time efficient sealed.And this kind of structure because its elastic self-tightening structure have certain reply axially and
Radial impact ability.
The utility model was both structurally simple, economical practical, easy to maintenance, and remained at high temperature under high pressure efficient sealed
Performance.
As shown in figure 1, in the present embodiment, the thickness of locating ring 11 is less than the thickness of solid body 12, the locating ring 11
Inner ring surface is integrally connected to the outer ring surface stage casing of solid body 12；The outer ring thickness of butterfly body 13 and the inner ring of solid body 12
Thickness is identical, and the outer ring surface of the butterfly body 13 and the inner ring surface of solid body 12 match integrally connected；Butterfly body 13
Inner ring thicknesses are more than its outer ring thickness, and the upper surface of the butterfly body 13 and lower surface are in outer low and inner high inclined plane, the inclination
Face can ensure that butterfly body 13 has resilience.
As shown in Fig. 2 in the present embodiment, the solid body 12 of coaxial integrally connected and the upper surface of butterfly body 13 and under
Surface is uniform-distribution with annular tooth 15 from outside to inside, is further ensured that the sealing property of this product.
As shown in figures 2 and 5, in the present embodiment, butterfly body 13 is by inclining that the annular tooth 15 of inner ring to outer shroud is formed
Inclined-plane and horizontal plane shape a in an angle.
In the present embodiment, locating ring 11, solid body 12 and the dish-shaped three of body 13 are made up of refractory metal material
So that butterfly body 13 has good resilience at high temperature under high pressure.
In the present embodiment, coating 14 is made up of high-temperature flexible graphite, it is ensured that this product has at high temperature under high pressure
There is good sealing property.
As shown in figure 3, elastic self-tightening tooth form Composition spacer 1 realizes sealed effect after collocation flange and bolt are installed
Figure.
Wherein, as shown in Figures 4 and 5, T is dish-like sealing surface gross thickness；T is positioning ring thickness；T1 is that solid body is thick
Degree；T2 is dish-shaped body thickness；T3 is that groove is high；B is overburden cover；E is groove depth；D1 is disk portion internal diameter；D2 is dish-like
Segment outer radius；D3 is body external diameter；D4 is pad external diameter；H is tooth form height；P is tooth pitch；R is the radius of flute of tooth；R is tooth top half
Footpath；A is the angle of dish-shaped tooth top and horizontal plane.
In addition, the structure of the elastic self-tightening tooth form Composition spacer 1 needs to be designed according to working condition, the route of design
It is as follows：
A) slack of supporting bolt is determined according to device operating temperature；
B) the size a, groove depth e, the high T3 of groove of the angle of dish-shaped tooth top and horizontal plane are determined；
C) the dish-shaped sealing surface gross thickness T of pad；
D) load of the part is calculated according to the axial deflection of dish-shaped body；
E) amount of deflection and fatigue strength after dish-shaped body distortion are calculated and is checked；
F) overall width (D1 and D3) of sealing surface is determined according to bolt power and the minimum pre-tight stress of pad；
G) the radial dimension D1 and D4 of pad are determined according to the size of flange；
H) tooth pitch p is generally 1.5mm, and corresponding R, r is 0.4mm, but can be adjusted according to service condition.
Wherein, as shown in Fig. 3, Fig. 6 and Fig. 7, in the presence of bolt power F, dish-shaped sealing surface part tends to level, with reality
Heart sealing surface part equally reaches sealing effectiveness.In addition, as shown in figure 8, dish-shaped sealing surface portion branch under in running order
Opposition is produced to flange sealing surface by medium internal pressure P effect, internal pressure is higher, then this opposition will
Bigger, when bolt produces relaxation deformation, flange sealing surface is tended to separate out, then dish-shaped sealing surface part then starts resilience, together
When in the presence of internal pressure, dish-like sealing surface can keep opposition F all the time for flange sealing surface so that in this kind of situation
Under, remain efficient sealing；And the utility model at high temperature when, the medium internal pressure P in annular groove 131 can be with temperature
Raise and strengthen, and then cause sealing property more high-efficient and lasting.
It these are only preferred embodiment of the present utility model, it is noted that for the ordinary skill people of the art
Member for, on the premise of the utility model technical principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (6)
1. a kind of elastic self-tightening tooth form Composition spacer, it is characterised in that：The elastic self-tightening tooth form Composition spacer (1) includes
Locating ring (11), solid body (12), dish-shaped body (13) and coating (14)；The locating ring (11), solid body (12)
And the coaxial integrally connected of dish-shaped body (13) three's ecto-entad；Offered on the inner ring surface of butterfly body (13) one it is same therewith
The annular groove (131) of axle；The coating (14) has two, and two coatings (14) difference matching covers are in solid body
(12) and both butterfly bodies (13) upper surface and lower surface.
2. elastic self-tightening tooth form Composition spacer according to claim 1, it is characterised in that：The thickness of the locating ring (11)
Degree is less than the thickness of solid body (12), and the inner ring surface of the locating ring (11) is integrally connected in the outer ring surface of solid body (12)
Section；The outer ring thickness of the butterfly body (13) is identical with the inner ring thicknesses of solid body (12), outside the butterfly body (13)
The inner ring surface of anchor ring and solid body (12) matches integrally connected；It is thick that the inner ring thicknesses of butterfly body (13) are more than its outer shroud
Degree, the upper surface of the butterfly body (13) and lower surface are in outer low and inner high inclined plane.
3. elastic self-tightening tooth form Composition spacer according to claim 2, it is characterised in that：The coaxial integrally connected
The upper surface and lower surface of solid body (12) and butterfly body (13) are uniform-distribution with annular tooth (15) from outside to inside.
4. elastic self-tightening tooth form Composition spacer according to claim 3, it is characterised in that：The butterfly body (13) by
The inclined plane that inner ring is formed to the annular tooth (15) of outer shroud and horizontal plane shape a in an angle.
5. elastic self-tightening tooth form Composition spacer according to claim 1, it is characterised in that：The locating ring (11), reality
Heart body (12) and dish-shaped body (13) three are made up of refractory metal material.
6. elastic self-tightening tooth form Composition spacer according to claim 1, it is characterised in that：The coating (14) be by
High-temperature flexible graphite is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720224223.5U CN206522334U (en) | 2017-03-09 | 2017-03-09 | A kind of elastic self-tightening tooth form Composition spacer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720224223.5U CN206522334U (en) | 2017-03-09 | 2017-03-09 | A kind of elastic self-tightening tooth form Composition spacer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206522334U true CN206522334U (en) | 2017-09-26 |
Family
ID=59903296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720224223.5U Expired - Fee Related CN206522334U (en) | 2017-03-09 | 2017-03-09 | A kind of elastic self-tightening tooth form Composition spacer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206522334U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763100A (en) * | 2017-03-09 | 2017-05-31 | 龚石磊 | A kind of elastic self-tightening tooth form Composition spacer |
-
2017
- 2017-03-09 CN CN201720224223.5U patent/CN206522334U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763100A (en) * | 2017-03-09 | 2017-05-31 | 龚石磊 | A kind of elastic self-tightening tooth form Composition spacer |
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| 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: 20170926 Termination date: 20200309 |
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| CF01 | Termination of patent right due to non-payment of annual fee |