CN106763100A - 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
- CN106763100A CN106763100A CN201710136729.5A CN201710136729A CN106763100A CN 106763100 A CN106763100 A CN 106763100A CN 201710136729 A CN201710136729 A CN 201710136729A CN 106763100 A CN106763100 A CN 106763100A
- Authority
- CN
- China
- Prior art keywords
- tooth form
- form composition
- butterfly
- composition spacer
- dish
- 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.)
- Pending
Links
- 125000006850 spacer group Chemical group 0.000 title claims abstract description 37
- 239000007787 solid Substances 0.000 claims abstract description 32
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000003870 refractory metal Substances 0.000 claims description 3
- 238000009827 uniform distribution Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 41
- 238000013461 design Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
- F16B43/001—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts for sealing or insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
- F16B43/02—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts with special provisions for engaging surfaces which are not perpendicular to a bolt axis or do not surround the bolt
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The invention 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 dish-shaped body (13) coaxial integrally connected of 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 present invention in working order when, under the double action by the medium internal pressure in annular groove and the sealing surface part automatic rebounding of butterfly body, remain efficient sealing.
Description
Technical field
The invention 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 cannot 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
Obtain flange face has enough end face stress with gasket seal face.And the disk spring used on chemical industry equipment be limited to material and
Processing method, price is also higher.
The shortcoming of existing technology is mainly the end face understrressing on pad because of bolt relaxation under HTHP, no
Efficient sealing can be reached.And it is relatively costly to provide the method for compensation rate to install disc spring additional, safeguard again very inconvenient.
The content of the invention
(1) technical problem to be solved
The technical problem to be solved in the present invention is to provide a kind of structurally simple, economical practical, easy to maintenance and high in high temperature
Pressure remains the elastic self-tightening tooth form Composition spacer of efficient sealed performance.
(2) technical scheme
In order to solve the above technical problems, the present invention provides a kind of elastic self-tightening tooth form Composition spacer, it include locating ring,
Solid body, dish-shaped body and coating；Locating ring, solid body and the dish-shaped body coaxial integrally connected of three's ecto-entad；
A co-axial annular groove is offered on the inner ring surface of butterfly body；Coating has two, two coating difference
Matching cover is in the upper surface of both solid body and butterfly body and lower surface.
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 outward 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, the sealing pattern according to tooth form Composition spacer of the invention, the principle sealed using self-tightening,
Part dish sealing surface is employed, using the dish-shaped elastic construction of patch metal material, and the self-tightening principle of internal pressure is combined,
Bolt cannot be provided under the situation of enough end face pretightning forces during HTHP, and dish-shaped self-tightening sealing structure can keep efficient all the time
Sealing.The low advantage of the existing initial sealing pretightning force of sealing structure of the invention, the dish-shaped sealing surface of pad inboard portion is again
With elasticity, resilience can be kept all the time under the conditions of long-term use；When internal pressure and temperature are raised, the inner chambers of pad
Acted on by internal pressure, enough pretightning forces are produced on end face, even if in bolt relaxation, the situation that flange sealing surface is tended to separate out
Under, 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 elasticity self-tightening tooth form Composition spacer of the invention.
Fig. 2 is the partial structural diagram of elasticity self-tightening tooth form Composition spacer of the invention.
The effect of sealing is realized after Fig. 3 is elasticity self-tightening tooth form Composition spacer collocation flange of the invention and bolt is installed
Figure.
Fig. 4 is the structural representation of the elastic self-tightening tooth form Composition spacer with size marking of the invention.
Fig. 5 is the partial structural diagram of the elastic self-tightening tooth form Composition spacer with size marking of the invention.
Fig. 6 is the design sketch before deformation when elasticity self-tightening tooth form Composition spacer of the invention is installed.
Fig. 7 is the design sketch after deformation when elasticity self-tightening tooth form Composition spacer of the invention is installed.
Fig. 8 is design sketch of the in running order lower dish-shaped sealing surface part of the present invention by medium internal pressure P.
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.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the invention is described in further detail.Hereinafter implement
Example can not be used for limiting the scope of the present invention for illustrating the present invention.
Fig. 1 is the structural representation of elasticity self-tightening tooth form Composition spacer of the invention, major embodiment this elastic self-tightening
Tooth form Composition spacer 1 is made up of locating ring 11, solid body 12, dish-shaped body 13 and coating 14, and reflects emphatically
The co-axial annular groove 131 opened up on the inner ring surface of butterfly body 13；Fig. 2 is that elasticity self-tightening tooth form of the invention is answered
The partial structural diagram of pad is closed, emphasis embodies annular tooth 15, and butterfly body 13 by the annular tooth of inner ring to outer shroud
15 inclined planes for being formed；Realized after Fig. 3 is elasticity self-tightening tooth form Composition spacer collocation flange of the invention and bolt is installed close
The design sketch of envelope；Fig. 4 is the structural representation of the elastic self-tightening tooth form Composition spacer with size marking of the invention, reflects bullet
The relative dimensions of property self-tightening tooth form Composition spacer 1；Fig. 5 is the elastic self-tightening tooth form Composition spacer with size marking of the invention
Partial structural diagram；Fig. 6 is the design sketch before deformation when elasticity self-tightening tooth form Composition spacer of the invention is installed；Fig. 7 is
Design sketch when elasticity self-tightening tooth form Composition spacer of the invention is installed after deformation；Fig. 8 is the in running order lower present invention
Dish-shaped sealing surface part is subject to the design sketch of medium internal pressure P.
The structure of elasticity self-tightening tooth form Composition spacer of the invention is as shown in figure 1, the elastic self-tightening tooth form Composition spacer 1
Including locating ring 11, solid body 12, dish-shaped body 13 and coating 14；Locating ring 11, solid body 12 and dish-shaped body 13
The coaxial integrally connected of three's ecto-entad；A co-axial annular groove 131 is offered on the inner ring surface of butterfly body 13；Cover
Cap rock 14 has two, and two difference matching covers of coating 14 are in solid body 12 and both upper surfaces of butterfly body 13
And lower surface.The present invention, using the principle of self-tightening sealing, employs part dish according to the sealing pattern of tooth form Composition spacer
Sealing surface, using the dish-shaped elastic construction of pad, and with reference to the self-tightening principle of internal pressure, in HTHP, bolt cannot be provided
Under the situation of enough end face pretightning forces, 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 invention, the dish-shaped sealing surface of pad inboard portion is again
With elasticity, resilience can be kept all the time under the conditions of long-term use；When internal pressure and temperature are raised, the inner chambers of pad
Acted on by internal pressure, enough pretightning forces are produced on end face, even if in bolt relaxation, the situation that flange sealing surface is tended to separate out
Under, 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.
The present invention was both structurally simple, economical practical, easy to maintenance, and remained efficient sealed property at high temperature under high pressure
Energy.
As shown in figure 1, in the present embodiment, the thickness of the thickness less than solid body 12 of locating ring 11, 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 the effect of sealing 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 thick solid body
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 be tooth form highly；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, groove T3 high of dish-shaped tooth top and the angle of horizontal plane are determined；
C) the dish-shaped sealing surface gross thickness T of pad；
D) axial deflection according to dish-shaped body calculates the load of the part；
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 determine 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 the effect of medium internal pressure P, internal pressure is higher, then this opposition will
Bigger, when bolt produces lax 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 present invention at high temperature when, the medium internal pressure P in annular groove 131 can be raised with temperature
And strengthen, and then cause sealing property more high-efficient and lasting.
These are only the preferred embodiment of the present invention, it is noted that come for those skilled in the art
Say, on the premise of the technology of the present invention principle is not departed from, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
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 dish-shaped body (13) coaxial integrally connected of 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；The inner ring thicknesses of butterfly body (13) are thick 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 |
|---|---|---|---|
| CN201710136729.5A CN106763100A (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 |
|---|---|---|---|
| CN201710136729.5A CN106763100A (en) | 2017-03-09 | 2017-03-09 | A kind of elastic self-tightening tooth form Composition spacer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106763100A true CN106763100A (en) | 2017-05-31 |
Family
ID=58961692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710136729.5A Pending CN106763100A (en) | 2017-03-09 | 2017-03-09 | A kind of elastic self-tightening tooth form Composition spacer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106763100A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594504A (en) * | 2019-08-20 | 2019-12-20 | 北京航天动力研究所 | Self-tightening type composite sealing structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1124145A (en) * | 1966-06-06 | 1968-08-21 | North American Aviation Inc | Improvements in dual spring seals |
| FR1592109A (en) * | 1968-05-08 | 1970-05-11 | ||
| EP0930452A1 (en) * | 1998-01-16 | 1999-07-21 | Daiso Corporation | Gasket |
| CN103968074A (en) * | 2014-04-22 | 2014-08-06 | 章华 | Middle flange sealing structure of high-pressure valve |
| CN203868335U (en) * | 2014-04-30 | 2014-10-08 | 宁波易天地信远密封技术有限公司 | Sealing ring |
| CN104358874A (en) * | 2014-11-05 | 2015-02-18 | 苏州宝骅机械技术有限公司 | High-compressibility and high-resilience sealing assembly |
| CN105042234A (en) * | 2015-04-20 | 2015-11-11 | 中国石油大学(华东) | MMC type gasket and design method for flange connection |
| CN206522334U (en) * | 2017-03-09 | 2017-09-26 | 龚石磊 | A kind of elastic self-tightening tooth form Composition spacer |
-
2017
- 2017-03-09 CN CN201710136729.5A patent/CN106763100A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1124145A (en) * | 1966-06-06 | 1968-08-21 | North American Aviation Inc | Improvements in dual spring seals |
| FR1592109A (en) * | 1968-05-08 | 1970-05-11 | ||
| EP0930452A1 (en) * | 1998-01-16 | 1999-07-21 | Daiso Corporation | Gasket |
| CN103968074A (en) * | 2014-04-22 | 2014-08-06 | 章华 | Middle flange sealing structure of high-pressure valve |
| CN203868335U (en) * | 2014-04-30 | 2014-10-08 | 宁波易天地信远密封技术有限公司 | Sealing ring |
| CN104358874A (en) * | 2014-11-05 | 2015-02-18 | 苏州宝骅机械技术有限公司 | High-compressibility and high-resilience sealing assembly |
| CN105042234A (en) * | 2015-04-20 | 2015-11-11 | 中国石油大学(华东) | MMC type gasket and design method for flange connection |
| CN206522334U (en) * | 2017-03-09 | 2017-09-26 | 龚石磊 | A kind of elastic self-tightening tooth form Composition spacer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594504A (en) * | 2019-08-20 | 2019-12-20 | 北京航天动力研究所 | Self-tightening type composite sealing structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |