CN213017975U - Double-sealing structure for O-shaped ring of high-pressure valve hole cover - Google Patents
Double-sealing structure for O-shaped ring of high-pressure valve hole cover Download PDFInfo
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- CN213017975U CN213017975U CN202021162053.0U CN202021162053U CN213017975U CN 213017975 U CN213017975 U CN 213017975U CN 202021162053 U CN202021162053 U CN 202021162053U CN 213017975 U CN213017975 U CN 213017975U
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Abstract
The utility model relates to a high pressure valve handhole door O shape circle double-seal structure is provided with the sealed O of triangle shape circle in crossing angle department of pressure valve bonnet, valve port lid and cylinder inboard, is provided with radial seal O shape circle in high pressure valve handhole door inboard, and radial seal O shape circle is located the sealed O of triangle shape circle non-pressure side. The radial sealing O-shaped ring is made of nitrile rubber or fluororubber according to different material pressing forces and temperature grades; the material of the triangular sealing O-shaped ring is T3 material with more ductility and corrosion resistance. A radial sealing O-shaped ring and a triangular sealing O-shaped ring are arranged in a high-pressure valve hole cover and are symmetrically arranged along the central axis of the high-pressure valve hole cover. The compressor has the advantages that the double-sealing form of the radial sealing O-shaped ring and the triangular sealing O-shaped ring is adopted, the sealing is carried out in multiple directions in the radial direction and the axial direction, the extrusion is more attached at the structure of the triangular sealing form, the sealing effect is better, and the stable operation period of the compressor is further improved.
Description
Technical Field
The utility model discloses mainly be applied to fields such as petrochemical, coal chemical industry with the gaseous sealing of reciprocating piston compressor valve hole department (valve hole lid), a high-pressure valve hole lid O shape circle double-seal structure specifically says so.
Background
The valve port cover is typically sealed by an O-ring, which is an annular seal with an O-ring (circular) cross-section. Generally, the gasket is mounted in a groove and compressed appropriately, and can be used as a seal for various fluids such as oil, water, air, and gas. The sealing form of the O-shaped ring is divided into a reciprocating dynamic seal and a static seal. Static sealing can be often used in the compressor, and a single O-shaped ring sealing structure is adopted at a pressure valve hole (a valve hole cover) of the original reciprocating piston compressor.
A single O-shaped ring sealing structure is adopted at a pressure valve hole (valve hole cover) of an original compressor, and the single O-shaped ring sealing structure is suitable for sealing low-pressure gas and generating gas leakage phenomenon due to the fact that the sealing cannot be realized when high-pressure gas is encountered. The single O-shaped ring sealing structure adopted at the valve hole (valve hole cover) of the original compressor belongs to static radial sealing and has a single sealing direction.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high pressure valve handhole door double-seal structure includes that radial static seal and triangle-shaped are sealed, is applicable to sealed high-pressure gas.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a high pressure valve handhole door double containment structure, includes high pressure valve handhole door and pressure valve bonnet and O shape circle, its technical essential is: a triangular sealing O-shaped ring is arranged at the intersection angle of the pressure valve cover, the valve hole cover and the inner side of the cylinder, a radial sealing O-shaped ring is arranged on the inner side of the high-pressure valve hole cover, and the radial sealing O-shaped ring is positioned on the non-pressure side of the triangular sealing O-shaped ring. The radial sealing O-shaped ring is made of nitrile rubber or fluororubber according to different material pressing forces and temperature grades; the material of the triangular sealing O-shaped ring is T3 material with more ductility and corrosion resistance. A radial sealing O-shaped ring and a triangular sealing O-shaped ring are arranged in a high-pressure valve hole cover and are symmetrically arranged along the central axis of the high-pressure valve hole cover.
The utility model has the advantages and beneficial effects that: the high-pressure valve hole cover O-shaped ring double seal adopts a common O-shaped ring (a radial seal form) + an angle type O-shaped ring (a triangular seal form), and is sealed in multiple directions in the radial direction and the axial direction, and the extrusion is more laminated at the structure of the triangular seal form, so that the sealing effect is better, gas is not easy to leak, the stable operation period of a compressor is prolonged, and the yield of the compressor is ensured.
Drawings
FIG. 1 is a schematic view of a high pressure valve cap construction;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2;
the reference numbers are as follows: 1. the high-pressure valve hole cover comprises a high-pressure valve hole cover 2, a gas pressure side 3, a radial sealing O-shaped ring 4, a cylinder inner side 5, a triangular sealing O-shaped ring 6 and a valve pressing cover.
Detailed description of the preferred embodimentsthe present invention is shown in fig. 1-3, and relates to a dual sealing structure for a high pressure valve hole cover, which comprises a high pressure valve hole cover 1 and a pressure valve cover 6, wherein: a triangular sealing O-shaped ring 4 is arranged at the intersection angle of the pressure valve cover, the valve hole cover and the inner side of the cylinder, a radial sealing O-shaped ring 3 is arranged at the inner side of the high-pressure valve hole cover, the radial sealing O-shaped ring is positioned at the non-air pressure side of the triangular sealing O-shaped ring, the material pressing force and the temperature grade of the radial sealing O-shaped ring are distinguished, and nitrile rubber or fluororubber can be selected; the material of the triangular sealing O-shaped ring is T3 material with more ductility and corrosion resistance. The T3 material is pure copper material. A radial sealing O-shaped ring and a triangular sealing O-shaped ring are arranged in a high-pressure valve hole cover and are symmetrically arranged along the central axis of the high-pressure valve hole cover.
The utility model relates to a high pressure valve handhole door O shape circle double containment, as shown in figure 1, high pressure valve handhole door O shape circle double containment adopts ordinary O shape circle (radial seal form) + angle form O shape circle (triangle seal form), seals from radial, axial multi-direction. The angled O-ring is made of a more ductile and corrosion resistant T3 material. Compared with the prior single O-shaped ring sealing structure technology of the valve cap, the high-pressure valve cap double-sealing structure has the following advantages and practicability: according to the application occasion of the O-shaped ring found in GB/T3452.1-2005O-shaped rubber sealing ring for hydraulic gas, the nitrile rubber (general oil-resistant rubber) can be applied at the maximum temperature of 125 ℃ and the pressure of 320 Bar; the fluororubber (oil-resistant and corrosion-resistant rubber) can be applied at the highest temperature of 200 ℃ and under the pressure of 100Bar, and the common O-shaped ring in the valve cover is made of the materials for radial sealing. And the pressure side of the valve hole cover is subjected to radial and axial combined sealing (a triangular sealing mode) by adopting an angular O-shaped ring, so that gas is further sealed, the gas leakage phenomenon of the compressor is avoided, and the production capacity of the compressor is greatly improved.
The angle type O-shaped ring is made of T3 material with more ductility and corrosion resistance, the T3 material is extruded to be more attached to the triangular sealing structure, the sealing effect is better, the service life of the T3 material is longer, and the angle type O-shaped ring is more suitable for high-pressure and high-temperature environments. Thereby improving the smooth operation period of the compressor.
Claims (1)
1. The utility model provides a high pressure valve handhole door O shape circle double-seal structure, includes high pressure valve handhole door and pressure valve bonnet and O shape circle, its characterized in that: a triangular sealing O-shaped ring is arranged at the intersection angle of the pressure valve cover, the valve hole cover and the inner side of the cylinder, a radial sealing O-shaped ring is arranged at the inner side of the high-pressure valve hole cover, and the radial sealing O-shaped ring is positioned at the non-pressure side of the triangular sealing O-shaped ring; the radial sealing O-shaped ring is made of nitrile rubber or fluororubber according to different material pressing forces and temperature grades; the triangular sealing O-shaped ring is made of T3 material with better ductility and corrosion resistance; a radial sealing O-shaped ring and a triangular sealing O-shaped ring are arranged in a high-pressure valve hole cover and are symmetrically arranged along the central axis of the high-pressure valve hole cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021162053.0U CN213017975U (en) | 2020-06-22 | 2020-06-22 | Double-sealing structure for O-shaped ring of high-pressure valve hole cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021162053.0U CN213017975U (en) | 2020-06-22 | 2020-06-22 | Double-sealing structure for O-shaped ring of high-pressure valve hole cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213017975U true CN213017975U (en) | 2021-04-20 |
Family
ID=75496478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021162053.0U Active CN213017975U (en) | 2020-06-22 | 2020-06-22 | Double-sealing structure for O-shaped ring of high-pressure valve hole cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213017975U (en) |
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2020
- 2020-06-22 CN CN202021162053.0U patent/CN213017975U/en active Active
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