CN201884670U - Seal ring suitable for low-voltage environment - Google Patents
Seal ring suitable for low-voltage environment Download PDFInfo
- Publication number
- CN201884670U CN201884670U CN2010206714479U CN201020671447U CN201884670U CN 201884670 U CN201884670 U CN 201884670U CN 2010206714479 U CN2010206714479 U CN 2010206714479U CN 201020671447 U CN201020671447 U CN 201020671447U CN 201884670 U CN201884670 U CN 201884670U
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- seal ring
- sealing
- seal
- sealing lip
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Abstract
The utility model relates to a seal ring suitable for low-voltage environment. The seal ring is characterized by including a sealing body, an oblique cone sealing lip is arranged at the upper part of the sealing body, and an upper surface of the sealing lip is designed as an inclined plane; the sealing lip and the sealing body are connected as a whole; and a groove is arranged between the sealing lip and the sealing body. The seal ring provided by the utility model has a simple structure and takes full advantage of pressure difference of gas inside and outside a seal vessel for the self-closing seal; excessive pre-tightening force is not needed to be exerted on the seal ring, and the higher the pressure difference is, the better the sealing effect is; and the seal ring is suitable for the sealing of a vacuum vessel with smaller pressure difference of the gas inside and outside the vessel and higher requirement for air tightness.
Description
Technical field
The utility model relates to a kind of seal ring, particularly about a kind of seal ring that is applicable to environment under low pressure.
Background technique
At present, the various seal rings of the many employings of the gas seal of container make it be close to sealing part by outside afterburning extruding, can't overflow thereby internal tank gas is plugged.The shortcoming of this sealing means is its structure more complicated, to the surface Machining required precision height of sealing surface, need apply very big pretightening force and make its generation certain deformation reach sealing to seal ring.Therefore, above-mentioned various seal ring is not suitable for the sealing of the hypobaric chamber hatch door of quick open and close.When hypobaric chamber was in the work operating mode, the approach that the seal ring leakage may occur had two kinds: the one, and the leakage (being boundary leakage) between seal ring and sealing door-plate and the doorframe; The 2nd, by seal ring internal penetration (being infiltration leakage).Boundary leakage is the main cause of seal failure, and factor such as the structure of the selection of it and sealing surface, machining accuracy, seal ring and compression degree is closely related.Application and practical experience by for many years show, prevent boundary leakage, and major measure is the resistance that increases on the leakage way, and make it the leakage Driving force that produced greater than by sealing surface both sides pressure reduction.If adopt common plain washer or O RunddichtringO structural type, because the size of hypobaric chamber hatch door is big and be rectangle, there is more uncontrollable factor in processing and the installation process, simple dependence atmospheric action seals in sealing door-plate applied pressure may cause seal failure, and when sealing door-plate pressure at both sides is lower, the pretightening force of gas pressure on seal ring is less, is easy to generate gas leakage.
In addition, seal ring can have a strong impact on sealability under the synergy of pressure, medium and temperature, even makes seal ring because of fatigue total failure.Especially under the condition of high temperature, some nonmetallic gasket also can accelerated ageing, rotten, even burns.
Summary of the invention
At the problems referred to above, the purpose of this utility model provides a kind of seal ring that is applicable to environment under low pressure.
For achieving the above object, the utility model is taked following technological scheme: a kind of seal ring is characterized in that: it comprises a seal, and the top of described seal is provided with an oblique cone type sealing lip, and the upper surface of described sealing lip is designed to an inclined-plane; Described sealing lip and described seal link into an integrated entity, and have a groove between described sealing lip and the described seal.
Choose silicone rubber as Manufacturing material.
The utility model is owing to take above technological scheme, it has the following advantages: 1, the utility model is simple in structure, the pressure reduction that has made full use of the inside and outside gas of seal container carries out self-closing sealing to it, need not be too much apply the seal ring pretightening force, and pressure reduction is high more, sealing effect is good more, is applicable to the less and sealing of the vacuum vessel that sealing requirements is higher of inside and outside pressure reduction of container.2, the utility model works the sealing lip of dominating seal action and is designed to oblique cone type, this structure can reduce the Deformation control strength of sealing lip, help the applying of seal ring and sealing surface, and the upper surface of sealing lip is designed to an inclined-plane, this design can reduce the pretightening force that the seal ring distortion needs.3, the utility model is chosen the material of silicone rubber as seal ring, and it has and does not pollute working medium, corrosion-resistant, good deformability and resilience, and is difficult for softening under high low temperature working environment or excellent comprehensive performances such as hardens, can reuse.4, the utility model can be applied to the self-closing self-locking hatch door of minute-pressure, in case seal ring atmospheric action in the sealing door-plate apply wiper seal when losing efficacy, then can obtain compensation from the atmospheric pressure that sealing lip directly is subjected to, thereby reduce the boundary leakage and the infiltration leakage that may occur, guarantee the reliable type that seals, even and can guarantee hatch door to produce micro displacement and do not leak.5, the utility model can be applied on the hypobaric chamber hatch door of external-open or two kinds of forms of inward swinging door, and all can realize the self-closing sealing of draught head.6, the utility model is less demanding to the planeness of sealing surface, has reduced to make the technology difficulty of hatch door sealing.
Description of drawings
Fig. 1 is the structural representation of the utility model seal ring
Fig. 2 is the user mode figure of the utility model seal ring
Fig. 3 is the local enlarged diagram of Fig. 2
Embodiment
Below in conjunction with drawings and Examples the utility model is described in detail.
As shown in Figure 1, seal ring 1 of the present utility model comprises a seal 11, and the top of seal 11 is provided with an oblique cone type sealing lip 12, and the upper surface of sealing lip 12 is designed to an inclined-plane.Sealing lip 12 links into an integrated entity with seal 11, and has a groove 13 between sealing lip 12 and the seal 11, so that sealing lip 12 has certain elasticity (can upper and lowerly be out of shape).
Since when choosing the material of seal ring 1, different sealing member materials, and its physical property and chemical property are all different, need take all factors into consideration compatibility and operating conditions such as pressure, temperature, stream time and operation period with working medium.Therefore, the good and bad performance of comprehensive each sealing member material, choose the material of silicone rubber as seal ring, it has and does not pollute working medium, corrosion-resistant, good deformability and resilience, and is difficult for softening under high low temperature working environment or excellent comprehensive performances such as hardens, can reuse.
As shown in Figure 2, it is a kind of self-closing self-locking hatch door of minute-pressure of using seal ring, it comprises hatch door body 2, both sides, doorframe 21 top at hatch door body 2 are welded a draw-in groove plate 22 respectively, the seal 11 of seal ring 1 embeds in the groove of two draw-in groove plates, 22 compositions, and 12 sealing door-plates 23 with hatch door body 2 of sealing lip are fitted.Doorframe 21 inboards are provided with a door lock mechanism 3, and are corresponding with movable dead bolt 31 positions of door lock mechanism 3, are welded with a voussoir 4 on the doorframe 21.
The working principle of the self-closing self-locking hatch door of minute-pressure of the present utility model is:
When the manual-lock hatch door, by door lock mechanism 3 (rotatable handle 32, movable dead bolt 31 moves forward, and carries out the self tightening wedge surface with voussoir 4 and contact, promotion sealing door-plate 23 moves forward and compresses seal ring 1) make sealing lip 12 to internal strain, thus realize initial sealings with 23 applyings of sealing door-plate.
When beginning to vacuumize in the cabin, the inside and outside draught head that forms in cabin, gas is desired to enter in the cabin out of my cabin, according to the structural feature of seal ring 1, in the air-flow effect following (as shown in Figure 3), sealing lip 12 is subjected to suction upwards, fit tightly with sealing door-plate 23, along with the continuous rising of cabin inside and outside differential pressure, sealing lip 12 is tight more with the applying of sealing door-plate 23, thereby reaches sealing effect.And, as long as be in the work operating mode, regardless of being intentionally or being not intended to stir door lock mechanism 3, the inside and outside pressure reduction that exists in cabin all is enough to make the manpower can't opened door, thereby realize the purpose of self-locking, avoid causing that the cabin internal pressure raises rapidly and the safe and reliable of work operating mode guaranteed in the loss that can't estimate that brings thus because unexpected situation causes hatch door moment to be opened.
When the air pressure balance of hatch door both sides, do not have applied external force on the whole hatch door this moment, rotation hand wheel 33, and the angle of adjustment activity dead bolt 32 is opened hatch door.
The utility model only describes with the foregoing description; the structure of each parts, the position is set and connects and all can change to some extent; on the basis of technical solutions of the utility model; all improvement and equivalents of individual component being carried out according to the utility model principle all should not got rid of outside protection domain of the present utility model.
Claims (2)
1. seal ring that is applicable to environment under low pressure, it is characterized in that: it comprises a seal, the top of described seal is provided with an oblique cone type sealing lip, and the upper surface of described sealing lip is designed to an inclined-plane; Described sealing lip and described seal link into an integrated entity, and have a groove between described sealing lip and the described seal.
2. a kind of seal ring that is applicable to environment under low pressure as claimed in claim 1 is characterized in that: choose silicone rubber as Manufacturing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206714479U CN201884670U (en) | 2010-12-10 | 2010-12-10 | Seal ring suitable for low-voltage environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206714479U CN201884670U (en) | 2010-12-10 | 2010-12-10 | Seal ring suitable for low-voltage environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201884670U true CN201884670U (en) | 2011-06-29 |
Family
ID=44182211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206714479U Expired - Fee Related CN201884670U (en) | 2010-12-10 | 2010-12-10 | Seal ring suitable for low-voltage environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201884670U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514213A (en) * | 2011-12-01 | 2012-06-27 | 北京控制工程研究所 | Method for rapidly repairing spacecraft valve sealing structure |
| CN109099163A (en) * | 2017-06-21 | 2018-12-28 | 徐工集团工程机械股份有限公司 | Sealing ring, multichannel center-rotary joint and walking type excavator |
| CN114984857A (en) * | 2022-06-28 | 2022-09-02 | 华能辛店发电有限公司 | Reation kettle is used in preparation of power plant's waste gas absorption liquid |
-
2010
- 2010-12-10 CN CN2010206714479U patent/CN201884670U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514213A (en) * | 2011-12-01 | 2012-06-27 | 北京控制工程研究所 | Method for rapidly repairing spacecraft valve sealing structure |
| CN102514213B (en) * | 2011-12-01 | 2014-04-02 | 北京控制工程研究所 | Method for rapidly repairing spacecraft valve sealing structure |
| CN109099163A (en) * | 2017-06-21 | 2018-12-28 | 徐工集团工程机械股份有限公司 | Sealing ring, multichannel center-rotary joint and walking type excavator |
| CN114984857A (en) * | 2022-06-28 | 2022-09-02 | 华能辛店发电有限公司 | Reation kettle is used in preparation of power plant's waste gas absorption liquid |
| CN114984857B (en) * | 2022-06-28 | 2023-09-08 | 华能辛店发电有限公司 | Reaction kettle for preparing waste gas absorption liquid of power plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20171210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |