CN206206582U - Sealing device - Google Patents
Sealing device Download PDFInfo
- Publication number
- CN206206582U CN206206582U CN201621186546.1U CN201621186546U CN206206582U CN 206206582 U CN206206582 U CN 206206582U CN 201621186546 U CN201621186546 U CN 201621186546U CN 206206582 U CN206206582 U CN 206206582U
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- CN
- China
- Prior art keywords
- sealing surface
- bottom wall
- airtight
- wall
- filler
- 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- Withdrawn - After Issue
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- 238000007789 sealing Methods 0.000 title claims abstract description 155
- 239000000945 filler Substances 0.000 claims abstract description 37
- 238000012856 packing Methods 0.000 claims abstract description 24
- 238000002955 isolation Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 description 8
- 241000283216 Phocidae Species 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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- Gasket Seals (AREA)
Abstract
A kind of sealing device, including upper sealing surface and lower sealing surface, the sealing device also include airtight and watertight padding, and the airtight and watertight padding is arranged between the upper sealing surface and the lower sealing surface；Wherein, the upper sealing surface includes packing cavity side wall and bottom wall, and described filler chamber side wall is stretched out from the upper sealing surface, and the packing cavity for accommodating airtight and watertight padding is formed therebetween；The lower sealing surface includes that filler accommodates trenched side-wall and filler accommodates groove bottom wall, and the filler groove for accommodating airtight and watertight padding is formed therebetween；The packing cavity side wall of the upper sealing surface can coordinate with the side wall of the lower sealing surface, and the overall chamber for accommodating the airtight and watertight padding is formed therebetween, and the overall chamber includes annular sealing surface, outer annular sealing surface and upper and lower sealed bottom wall face.By the device, even if sealing surface has certain gap, medium also cannot directly pass through gap, so as to improve the stability of sealing, reliability.Fig. 2.
Description
Technical field
The utility model is related to sealing device field, is filled more particularly to the sealing for valve, pipeline, container connection
Put.
Background technology
For container connection position or valve, the adpting flange of pipeline, general manufacturer is all the public affairs according to product
Claim what pressure was selected by standard design.Have bright for flange seal mode, the sealing gasket of pairing and application place in standard
True code requirement.But, in practice, although producer is all to select appropriate sealing device by specification, but actually used
During undesirable dielectric leakage problem still occurs, this and the occasion that sealing device is used, immesurable environment become
The factors such as change have close relationship.For example, apply to high/low temperature change greatly, coefficient of thermal expansion greatly, pressure greatly when, by
In material deformation in itself so that the phenomenon that dielectric leakage occurs in sealing device happens occasionally, and this is also connected with conventional flange
When sealing structure existing for inherent shortcoming have certain relation.Specifically, the sealing means of conventional flange connection are more, but mainly
In the presence of four kinds of forms as shown in figures 1 a-1d, including whole plane (FF types) flange sealing surface, convex surface (RF types) flange sealing surface,
Male and fomale(M＆F) (MF types) flange sealing surface and tenon face (MF types) flange sealing surface.In these four major type of sealing structures,
Its sealing means belongs to plane sealing structure, and the leakage way of flat seal is as follows：1) leakage：Sealing surface exist gap or
Defect；2) seepage：There is latent defect (loose, crackle etc.) in cushion material；3) spread：There are pore and microscopic spaces in material.
And in Practical Project, the situation of flange seal leakage belongs to the and 1) plants " leakage " form mostly, and the reason for produce this leakage
It is more complicated, sometimes it is superimposed by many factors and is caused, certain position of sealing surface is produced gap, invite medium from seam
Leakage in gap.Similarly, foregoing other several plane sealing structures cannot all overcome these problems.
Therefore, it is the problem above of solution conventional seals structure, this area needs a kind of improved sealing structure badly.
Utility model content
The purpose of this utility model is to provide a kind of sealing device, by the device, even if sealing surface exist it is certain
Gap, medium also cannot directly pass through gap, so as to improve the stability of sealing, reliability.
To achieve the above object, the utility model provides a kind of sealing device, including upper sealing surface and lower sealing surface, institute
Stating sealing device also includes airtight and watertight padding, and the airtight and watertight padding is arranged between the upper sealing surface and the lower sealing surface；Its
In, the upper sealing surface includes packing cavity side wall and bottom wall, and described filler chamber side wall stretches out from the upper sealing surface, formed therebetween
Packing cavity for accommodating airtight and watertight padding；The lower sealing surface includes that filler accommodates trenched side-wall and filler accommodates groove bottom wall,
The filler groove for accommodating airtight and watertight padding is formed therebetween；The packing cavity of the upper sealing surface holds with the filler of the lower sealing surface
Groove of receiving coordinates, and forms the overall chamber for accommodating the airtight and watertight padding therebetween, and the overall chamber includes annular sealing surface, outer
Annular sealing surface and upper and lower sealed bottom wall face.
It is preferred that being additionally provided with isolation projection on the bottom wall of the lower sealing surface.
It is preferred that when coordinating, the height of the packing cavity side wall of the upper sealing surface is not enough to and the lower sealing surface
Filler accommodates the bottom wall contact of groove.
It is preferred that characterized in that, the described filler bottom of chamber wall of the upper sealing surface and the described of the lower sealing surface are filled out
The surface that material accommodates groove bottom wall is uneven shape.
It is preferred that the rough shape includes circular arc jog and/or zigzag jog and/or waveform
Jog.
It is preferred that the packing cavity side wall of the upper sealing surface, bottom wall form first medium leak path, the path is in big
Cause " bow " wordline.
It is preferred that characterized in that, the lower sealing surface filler accommodates side wall, bottom wall and the described filler groove of groove
The isolation projection of bottom wall forms second medium leak path together, and the path is in substantially " huge " wordline.
It is preferred that the airtight and watertight padding is soft packing.
By previous constructions, sealing device of the present utility model can overcome various under various different application scenarios
The influence of environmental factor or material factors so that the gap that medium cannot be passed through directly between sealing surface, significantly increases sealing
Stability and reliability.Therefore, sealing device of the present utility model is applied to pipeline, valve, the sealing of the connecting portion of container,
It is especially adapted for use in the sealing of flange connecting portion.
Brief description of the drawings
Specific embodiment of the present utility model is illustrated referring now to the following drawings, in the accompanying drawings：
Figure 1A -1D are the schematic cross-sectional views of prior art sealing device；
Fig. 2 is the partial schematic sectional view for including the flange connection according to the utility model sealing device.
Fig. 3 is a kind of schematic cross-sectional view of embodiment of the utility model sealing device；
Fig. 4 is the schematic cross-sectional view of the utility model sealing device another kind embodiment；
Fig. 5 is that media leaks path is illustrated with embodiment illustrated in fig. 4；
Fig. 6 is that self sealss principle is illustrated with embodiment illustrated in fig. 4；
Fig. 7, Fig. 8 and Fig. 9 A-9B respectively illustrate various sealing surface structures that the utility model sealing device is used
Make.
Specific embodiment
Partial schematic sectional view as shown in Figure 2, shows a kind of flange including the utility model sealing device 1 in figure
Attachment structure 2, the flange connection is used for connecting pipe or valve member, and medium is accommodated in the cavity 3 on right side in figure
4, these media are probably the medium of high temperature or/high pressure, it is also possible to corrosive medium.However, people in the art
Member can also understand, although flange connection is shown, but the flange connection is only for illustrating
Application scenario of the present utility model, sealing device of the present utility model can also be applied to the occasions such as container connection position, therefore
The feature and technical scheme of sealing device of the present utility model should not be restricted by the limitation of flange connection.In flange connection
Upper and lower joint face 201 and 202 on be respectively equipped with the upper sealing surface 101 and lower sealing surface 102 of the utility model sealing device 1,
The sealing device also includes airtight and watertight padding 103, and the airtight and watertight padding 103 is arranged on sealing surface and lower sealing surface 101, between 102.
More clearly as shown in figure 3, in the utility model, upper sealing surface 101 includes a pair of Hes of packing cavity side wall 1011
Bottom wall 1012, the packing cavity side wall stretches out from upper sealing surface 101, is formed together for accommodating airtight and watertight padding by the side wall and bottom wall
Packing cavity.The lower sealing surface 102 includes that a filler accommodates trenched side-wall 1021 and bottom wall 1022, forms close for accommodating therebetween
The filler groove of packing material.Isolation projection 10221 is additionally provided with the bottom wall.In connection, upper sealing surface 101 and lower sealing surface
102 coordinate, and packing cavity side wall 1011 stretches into filler and accommodates in trenched side-wall 1021 at that time, and coordinates with it.
Again as shown in detail in fig. 3, when medium is located in the cavity on the right side of drawing when (as shown in P), upper sealing surface 101
The filler of packing cavity side wall 1011 and lower sealing surface 102 accommodate the cooperation of trenched side-wall 1021 to form overall chamber, this is whole
Fluid chamber includes annular sealing surface I and outer annular sealing surface II and upper and lower sealed bottom wall face, and airtight and watertight padding 103 is close with upper
The bottom wall 1012 in the airtight and watertight padding chamber of front cover 101 is contacted, and airtight and watertight padding 103 is also accommodated with the airtight and watertight padding of lower sealing surface 102
The bottom wall 1022 of groove is contacted.It is preferred that isolation projection 10221 set on bottom wall 1022 stretches into height certain in airtight and watertight padding
Degree, to play a part of to change the flow path of potential leakage medium.
Additionally it is preferred that the height of the packing cavity side wall 1011 of upper sealing surface 101 is not enough to be filled out with lower sealing surface 102
Material accommodate groove bottom wall 1022 contact, can so make filler 103 be further filled into the gap stayed therebetween and preferably
Enhancing sealing effectiveness.
Fig. 4 is another embodiment schematic cross-sectional view of the utility model sealing device, upper sealing surface 101 in the embodiment
Bottom wall 1012 and the surface of bottom wall 1022 of lower sealing surface 102 be all rough；Specifically, Fig. 7 for another example, Fig. 8 and
Shown in Fig. 9 A and 9B, these rough surfaces can as shown in Figure 7 include substantially circular arc jog, or can be such as figure
Include substantially waveform jog shown in 8, or can as illustrated in figures 9a and 9b include substantially zigzag jog, wherein Fig. 9 A and
Sawtooth protrusion direction shown in Fig. 9 B is opposite.
Again as shown in Figure 5 and Figure 6, shown in figure the media leaks path that assumes in the utility model sealing device and from
Sealing principle.Specifically, airtight and watertight padding 103, for example, can be that the soft packing of the materials such as soft graphite, graphite packing is set
On the upper and lower sealing surface 101 and 102 in set packing cavity and filler groove, it is close that now airtight and watertight padding 103 is crushed on annular
Between front cover I and outer annular sealing surface II, the surrounding of airtight and watertight padding is tight with the respective side wall of packing cavity and filler groove and bottom wall
Contiguity is touched.Now, its respective bottom wall 1012 and 1022 plays a part of flat seal, and respective side wall 1011 and 1021 is played
The effect of radial seal, has especially blocked the direct connection in leaking medium path by the mutual cooperation of each side wall.Even if by
When there is gap between the change such as use environment or medium temperature, pressure causes upper and lower sealing surface 101 and 102, such as Fig. 5
When hypothesis media flow paths shown in middle arrow occur, because flow path has actually been blocked, therefore medium cannot directly lead to
Cross gap and produce leakage, i.e., essence basically can not reach path shown in left arrow in figure.Specifically, now medium can
Two flow paths can occur, one is along the side wall 1011 of upper sealing surface, the first medium leak path of bottom wall 1012, should
Path is similar to " bow " wordline；The second is along the side wall 1021 of lower sealing surface, the second medium leak path of bottom wall 1022, especially
It is that, when there is isolation projection 10221 on filler groove bottom wall 1022, the isolated path is now overall close similar to " huge " wordline
Seal apparatus are presented Yi " Zhang " shape slot structure.By the construction, the sealing radial load blocking medium flow field that annular sealing surface I is applied
Dynamic path, it is assumed that media leaks are entered into the gap of upper and lower sealing surface, then the pressure medium in integral sealing space can be from
Upper and lower side and direction compression seal filler (as shown in Figure 6) of inner side three, make outer annular sealing surface contact more closely, and play
Self sealing action.
Therefore, understood by above with reference to accompanying drawing, with reference to the embodiment description of the utility model sealing device, this
The sealing device of utility model is by the packing cavity of upper sealing surface and the respective side wall of the filler groove of lower sealing surface and bottom wall structure
Make and form an integral sealing space, the sealing space includes annular sealing surface and outer annular sealing surface and forms radial seal
To block the direct access of medium, so as to prevent direct leakage；Airtight and watertight padding in sealing space simultaneously is closely
Contacted with cavity wall, from upper and lower side and inboard compression airtight and watertight padding, and clamp force can be produced from so that outer when medium is flowed into wherein
Annular sealing surface contact is tightr.Additionally, what " bow " the font line formed by upper sealing surface and lower sealing surface were formed
" huge " font line so that all line lengths of sealing, seals more reliable.For another example the concave-convex surface employed in embodiment, such as sawtooth
Shape etc. so that the more stable reliability of sealing.
The utility model design is explained in detail above in association with specific preferred embodiment, however it is general for this area
For logical technical staff, the further modifications and variations in the utility model concept will be it is to be understood that especially
Although sealing device of the present utility model is its feature that illustrates as a example by upper and lower sealing surface when flange is connected, but ability
Field technique personnel can apparently recognize that the utility model sealing device could be applicable to various types of planes and end
Face is sealed, and these modification and variation are all fallen within the protection domain of appended claims.
Claims (8)
1. a kind of sealing device, including upper sealing surface and lower sealing surface, the sealing device also include airtight and watertight padding, the sealing
Filler is arranged between the upper sealing surface and the lower sealing surface；
Characterized in that,
The upper sealing surface includes packing cavity side wall and bottom wall, and described filler chamber side wall stretches out from the upper sealing surface, the side
The packing cavity for accommodating airtight and watertight padding is formed between wall and the bottom wall；
The lower sealing surface includes that filler accommodates trenched side-wall and filler accommodates groove bottom wall, shape between the side wall and the bottom wall
Into the filler groove for accommodating airtight and watertight padding；
The described filler chamber of the upper sealing surface accommodates groove and coordinates with the described filler of the lower sealing surface, is formed accommodate therebetween
The overall chamber of the airtight and watertight padding, the overall chamber constitutes annular sealing surface, outer annular sealing surface and upper and lower sealing
Wall surface.
2. sealing device as claimed in claim 1, it is characterised in that be additionally provided with isolation on the bottom wall of the lower sealing surface
Projection.
3. sealing device according to claim 1, it is characterised in that the height of the described filler chamber side wall of the upper sealing surface
Degree is set to be not enough to contacted with the described filler receiving groove bottom wall of the lower sealing surface.
4. sealing device according to claim 1, it is characterised in that the described filler bottom of chamber wall of the upper sealing surface and institute
The described filler receiving groove bottom wall for stating lower sealing surface has rough surface.
5. sealing device according to claim 4, it is characterised in that the rough surface includes that circular arc is concavo-convex
Portion and/or zigzag jog and/or waveform jog.
6. sealing device according to claim 1, it is characterised in that the described filler chamber side wall of the upper sealing surface and institute
State bottom wall and form first medium leak path, the path is in substantially " to bend " wordline.
7. the sealing device according to claim 1 or 6, it is characterised in that the described filler of the lower sealing surface accommodates ditch
The isolation projection of groove sidewall and the bottom wall and described filler groove bottom wall forms second medium leak path, the road together
Footpath is in substantially " huge " wordline.
8. sealing device according to claim 1, it is characterised in that the airtight and watertight padding is soft packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621186546.1U CN206206582U (en) | 2016-11-04 | 2016-11-04 | Sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621186546.1U CN206206582U (en) | 2016-11-04 | 2016-11-04 | Sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206206582U true CN206206582U (en) | 2017-05-31 |
Family
ID=58757925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621186546.1U Withdrawn - After Issue CN206206582U (en) | 2016-11-04 | 2016-11-04 | Sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206206582U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019511A (en) * | 2016-11-04 | 2018-05-11 | 江南阀门有限公司 | Sealing device |
| CN109910206A (en) * | 2019-04-30 | 2019-06-21 | 川田机械制造(上海)有限公司 | Disintegrator knife cavity configuration and corresponding pulverizer |
| TWI717810B (en) * | 2019-08-20 | 2021-02-01 | 潔康企業有限公司 | High-efficiency sealing structure of tubular modular boiler |
-
2016
- 2016-11-04 CN CN201621186546.1U patent/CN206206582U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019511A (en) * | 2016-11-04 | 2018-05-11 | 江南阀门有限公司 | Sealing device |
| CN108019511B (en) * | 2016-11-04 | 2024-03-29 | 江南阀门有限公司 | Sealing device |
| CN109910206A (en) * | 2019-04-30 | 2019-06-21 | 川田机械制造(上海)有限公司 | Disintegrator knife cavity configuration and corresponding pulverizer |
| CN109910206B (en) * | 2019-04-30 | 2024-03-22 | 川田机械制造(上海)有限公司 | Crusher knife cavity structure and corresponding crusher |
| TWI717810B (en) * | 2019-08-20 | 2021-02-01 | 潔康企業有限公司 | High-efficiency sealing structure of tubular modular boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170531 Effective date of abandoning: 20240329 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170531 Effective date of abandoning: 20240329 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |