CN217762052U - Low temperature compressor gas valve lid seal structure - Google Patents
Low temperature compressor gas valve lid seal structure Download PDFInfo
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- CN217762052U CN217762052U CN202221566033.9U CN202221566033U CN217762052U CN 217762052 U CN217762052 U CN 217762052U CN 202221566033 U CN202221566033 U CN 202221566033U CN 217762052 U CN217762052 U CN 217762052U
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- boss
- gas valve
- recess
- inner end
- sealing
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Abstract
The utility model discloses a low temperature compressor gas valve lid seal structure, including the gas valve lid, on the valve opening of cylinder block was located to the fixed lid of gas valve lid, be equipped with the boss on the terminal surface in the corresponding gas valve lid, the laminating is matchd with the valve opening inner wall to the boss excircle, its characterized in that: an annular groove is formed in the outer circle of the inner end of the boss and is communicated with the inner end face of the boss, a sealing element is installed in the annular groove, a gland is fixedly arranged on the corresponding inner end face of the boss, and the sealing element is limited in the annular groove by the gland; the sealing member is including polytetrafluoroethylene sealing washer and round spring, and the sealing washer the inner has seted up the round recess, and the spring matching inlays to be located in this recess to carry out elastic support to recess both sides wall, corresponding recess both sides wall is sealed laminating valve hole inner wall and ring channel lateral wall respectively. The utility model discloses rational in infrastructure, sealed stable.
Description
Technical Field
The utility model relates to an improvement invention of compressor especially relates to an improvement invention of low temperature compressor gas valve lid seal structure.
Background
In the prior art, a conventional sealing ring is used for sealing between a gas valve cover of the low-temperature compressor and the inner wall of a valve hole of a cylinder body, however, the sealing ring is in a low-temperature and high-pressure environment in the low-temperature compressor, the sealing ring is hardened at a low temperature, and in addition, the high-pressure environment is adopted, so that leakage is easy to occur.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome prior art not enough, provide a rational in infrastructure, sealed stable low temperature compressor gas valve gap seal structure.
In order to solve the technical problem, the utility model discloses an adopt following technical scheme to realize: this kind of low temperature compressor gas valve lid seal structure, including the gas valve lid, on the valve opening of cylinder block was located to the fixed lid of gas valve lid, be equipped with the boss in the terminal face in the corresponding gas valve lid, the laminating is matchd with the valve opening inner wall to the boss excircle, its characterized in that: an annular groove is formed in the excircle of the inner end of the boss and is communicated with the inner end face of the boss, a sealing element is installed in the annular groove, a gland is fixedly arranged on the corresponding inner end face of the boss, and the sealing element is limited in the annular groove by the gland; the sealing element comprises a polytetrafluoroethylene sealing ring and a circle of spring, a circle of groove is formed in the inner end of the sealing ring, the spring is embedded in the groove in a matching mode and elastically supports two side walls of the groove, and the two corresponding side walls of the groove are respectively in sealing fit with the inner wall of the valve hole and the side wall of the annular groove.
The spring is made of stainless steel.
The section of the spring is O-shaped or U-shaped.
The gland is of an annular structure and is connected with the inner end face of the boss through a fastener.
The utility model has the advantages that the improved low-temperature compressor gas valve cover sealing structure adopts the spring energy storage sealing; the inner part and the outer part are different, the outer sealing element body adopts an enhanced filled polytetrafluoroethylene sealing ring, the inner part adopts a stainless steel spring made of special materials, and the sealing ring is contacted with the valve port surface of the cylinder body to play a sealing role, so that the requirements on low friction coefficient, high strength, wear resistance, working medium resistance and low temperature resistance are met; the spring provides pressure for the sealing ring to prevent gas leakage, so that the lip (two side walls of the groove) of the sealing ring is always tightly attached to the contact surface, and the abrasion of materials and the offset or eccentricity of matched parts are compensated; the system pressure can also assist the sealing element to store energy, and the gas valve cover can realize effective sealing no matter under a high-pressure compressor or a low-pressure compressor.
Drawings
The following describes the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a structural diagram of the air valve cover of the present invention.
Fig. 3 is a structural diagram of the sealing member of the present invention.
Detailed Description
The drawings show the structure of the present invention, and the details thereof will be further described with reference to the drawings. In the embodiment, the sealing structure of the gas valve cover of the low-temperature compressor comprises the gas valve cover 1, wherein the gas valve cover 1 is fixedly covered on a valve hole of a cylinder body 2, a boss 11 is arranged on the inner end surface of the corresponding gas valve cover 1, the outer circle of the boss 11 is matched and attached with the inner wall of the valve hole, an annular groove 12 is arranged on the outer circle of the inner end of the boss 11, the annular groove 12 is communicated with the inner end surface of the boss 11, a sealing element 3 is arranged in the annular groove 12, a gland 4 is fixedly arranged on the inner end surface of the corresponding boss 11, and the sealing element 3 is limited in the annular groove 12 by the gland 4; the sealing element 3 comprises a polytetrafluoroethylene sealing ring 31 and a ring of spring 32, a ring of groove 33 is formed in the inner end of the sealing ring 31, the spring 32 is embedded in the groove 33 in a matching mode, elastic support is carried out on two side walls of the groove 33, and the two corresponding side walls of the groove 33 are respectively in sealing fit with the inner wall of the valve hole and the side wall of the annular groove 12.
According to the sealing principle of the utility model, the spring 32 provides pressure for the sealing ring 31 to prevent gas leakage, so that the two side walls of the groove 33 of the sealing ring 31 are always tightly attached to the inner wall of the valve hole and the side wall of the annular groove 12, and the abrasion of materials and the offset or eccentricity of matched parts are compensated; the system pressure can also assist the sealing ring 31 to store energy, namely high-pressure gas enters the groove 33 to form pressure on two side walls of the groove 33, so that the gas valve cover 1 can realize effective sealing no matter under a high-pressure compressor or a low-pressure compressor.
In a further improved embodiment, the spring 32 is made of stainless steel, and the stainless steel enables the spring 32 to have low temperature resistance.
As a further improved embodiment, the cross section of the spring 32 is O-shaped or U-shaped, and the spring stably and elastically supports two side walls of the groove 33 of the sealing ring 31.
As a specific embodiment of further improvement, the gland 4 is of an annular structure and is connected with the inner end face of the boss 11 through a fastener, so that the limit of the sealing ring 31 is realized, and the membrane type unloader 5 arranged at the center of the air valve cover is not influenced.
In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a low temperature compressor gas valve lid seal structure, including the gas valve lid, on the valve opening of cylinder block was located to the fixed lid of gas valve lid, be equipped with the boss in the inner terminal surface of corresponding gas valve lid, the laminating is matchd with the valve opening inner wall to the boss excircle, its characterized in that: an annular groove is formed in the excircle of the inner end of the boss and is communicated with the inner end face of the boss, a sealing element is installed in the annular groove, a gland is fixedly arranged on the corresponding inner end face of the boss, and the sealing element is limited in the annular groove by the gland; the sealing member is including polytetrafluoroethylene sealing washer and round spring, and the sealing washer the inner has seted up the round recess, and the spring matching inlays to be located in this recess to carry out elastic support to recess both sides wall, corresponding recess both sides wall is sealed laminating valve hole inner wall and ring channel lateral wall respectively.
2. The cryogenic compressor gas valve cover seal structure of claim 1, wherein: the spring is made of stainless steel.
3. The gas valve cover sealing structure of the cryogenic compressor according to claim 1 or 2, wherein: the cross section of the spring is O-shaped or U-shaped.
4. The cryogenic compressor gas valve cover seal structure of claim 1, wherein: the gland is of an annular structure and is connected with the inner end face of the boss through a fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221566033.9U CN217762052U (en) | 2022-06-22 | 2022-06-22 | Low temperature compressor gas valve lid seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221566033.9U CN217762052U (en) | 2022-06-22 | 2022-06-22 | Low temperature compressor gas valve lid seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217762052U true CN217762052U (en) | 2022-11-08 |
Family
ID=83895499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221566033.9U Active CN217762052U (en) | 2022-06-22 | 2022-06-22 | Low temperature compressor gas valve lid seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217762052U (en) |
-
2022
- 2022-06-22 CN CN202221566033.9U patent/CN217762052U/en active Active
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