CN214404829U - Automobile-used LNG adiabatic gas cylinder relief valve with increase pressure regulating function - Google Patents
Automobile-used LNG adiabatic gas cylinder relief valve with increase pressure regulating function Download PDFInfo
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- CN214404829U CN214404829U CN202023180762.4U CN202023180762U CN214404829U CN 214404829 U CN214404829 U CN 214404829U CN 202023180762 U CN202023180762 U CN 202023180762U CN 214404829 U CN214404829 U CN 214404829U
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Abstract
The utility model provides a vehicle LNG heat insulation gas cylinder safety valve with pressure regulating function, including the safety valve main part, the safety valve main part includes the valve body, and the upper end of valve body is a piston body, is equipped with a piston in the piston body, and the piston reciprocates in the piston body, and the top of piston still is equipped with a recess, and the direction of seting up of recess is towards the inner wall of piston body, is fixed with the guide ring in the recess, and the piston still includes a piston rod, is equipped with the spring between piston rod and the piston body; a first elastic sealing ring is arranged between the piston rod and the valve body, a nut for blocking the elastic sealing ring is arranged above the first elastic sealing ring and fixed on a gasket, a second elastic sealing ring is arranged at the top of the piston, a check ring is arranged above the second elastic sealing ring, and a clamp spring is fixed above the check ring. The utility model discloses a thereby increase two elastic sealing circle and can improve holistic sealed effect between piston and valve body to every elastic sealing circle top all is provided with and is used for fixed spacing part.
Description
Technical Field
The utility model relates to a valve field, concretely relates to adiabatic gas cylinder relief valve of automobile-used LNG with increase pressure regulating function.
Background
LNG is an abbreviation for Liquefied Natural Gas, English, Liquefied Natural Gas. After the natural gas is purified (to remove impurities such as carbon dioxide, sulfide, heavy hydrocarbon, water and the like), the natural gas is cryogenically cooled to-162 ℃ under normal pressure, and the natural gas is changed from a gaseous state to a liquid state, namely liquefied natural gas, wherein the volume of the liquefied natural gas is about 1/620 of the volume of the natural gas with the same mass, and the weight of the liquefied natural gas is about 45 percent of that of water with the same volume.
The safety valve is a special valve, wherein the opening and closing part is in a normally closed state under the action of external force, and when the pressure of a medium in equipment or a pipeline rises to exceed a specified value, the medium is discharged to the outside of the system to prevent the pressure of the medium in the pipeline or the equipment from exceeding the specified value. The safety valve is mainly used for boiler, pressure container and pipeline, and its control pressure is not greater than specified value, so that it can play important role in protecting personal safety and equipment operation.
In the prior art, the LNG safety valve has a complex structure, a large volume and poor sealing performance.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides an adiabatic gas cylinder relief valve of automobile-used LNG with increase pressure regulating function to solve the problem of above-mentioned at least one kind of technique.
The technical scheme of the utility model is that: the vehicle LNG heat-insulation gas cylinder safety valve with the function of increasing pressure regulation comprises a safety valve main body and is characterized in that the safety valve main body comprises a valve body, the upper end part of the valve body is a piston body, a piston is arranged in the piston body and moves up and down in the piston body, the top of the piston is also provided with a groove, the opening direction of the groove faces to the inner wall of the piston body, a guide ring is fixed in the groove, the piston further comprises a piston rod, and a spring is arranged between the piston rod and the piston body;
the piston rod with be equipped with first elastic sealing ring between the valve body, first elastic sealing ring top is equipped with the nut that blocks elastic sealing ring, the nut is fixed on a gasket, the top of piston is equipped with second elastic sealing ring, the top of second elastic sealing ring is equipped with the retaining ring, the retaining ring top is fixed with the jump ring.
The utility model discloses a thereby increase two elastic sealing circle and can improve holistic sealed effect between piston and valve body to every elastic sealing circle top all is provided with and is used for fixed spacing part, and then can prevent not hard up of elastic sealing circle. The utility model discloses an increase the movement track that the guide ring can be convenient for restrict the piston. The utility model discloses a retaining ring with the second elastic sealing ring that the jump ring is right carries on spacingly.
Further preferably, the tail end of the piston is connected with a valve clack, and the valve clack is located at the lower end of the valve body. The utility model discloses an optimize the structure of traditional relief valve to can further reduce the volume of relief valve.
Preferably, the valve body is provided with two channels, the inside of the valve body is communicated with the outside through the two channels, and the two channels are in an inclined state.
The utility model discloses a gaseous business turn over of passageway ability of two slopes can be convenient for.
Further preferably, the lower end of the piston body is inserted into the lower end part of the valve body, an opening is formed in the top of the piston body, and a pressing cap is fixed at the opening of the piston body.
The utility model discloses a press the cap can play the effect of steady voltage.
Preferably, a circular plate body is arranged at the top of the pressing cap, the outer diameter of the plate body is larger than that of the piston body, a cylinder is connected to the lower portion of the circular plate body and extends into the piston body, and the circular plate body is fixed above the opening.
The utility model discloses a circular plate body can play limiting displacement to pressing the cap.
Preferably, an annular groove is formed in the joint of the cylinder and the circular plate, the opening of the annular groove faces the inner wall of the piston body, and a sealing ring is embedded in the annular groove.
Thereby improving the sealing performance of the pressure cap and the piston body.
Preferably, the cylinder is further provided with a groove with a downward opening, and the top of the piston is provided with a protrusion matched with the groove.
The piston can be limited.
Further preferably, the guide ring is located below the second elastic sealing ring.
Preferably, the valve body is provided with a piston movement breathing channel, and the piston movement breathing channel is in an inclined state.
The utility model discloses a piston motion breathing passage of slope can be convenient for gaseous business turn over.
Further preferably, the piston movement breathing passage is formed at the lower end of the valve body, and an opening of the piston movement breathing passage in the valve body is flush with the gasket.
Preferably, the piston rod end of the piston is provided with a through hole. Facilitating the introduction of gas into the piston chamber.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is another schematic structural diagram of the present invention.
In the figure: the device comprises a valve body 1, a piston body 2, a piston 3, a pressure cap 4, a valve clack 5, a channel 6, a first elastic sealing ring 7, a nut 8, a gasket 9, a sealing ring 10, a second elastic sealing ring 11, a retainer ring 12, a snap spring 13, a guide ring 14, a spring 15 and a piston movement breathing channel 16.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Example 1
As shown in fig. 1-2, a vehicle LNG heat-insulating gas cylinder safety valve with pressure-regulating function, which comprises a safety valve main body, and is characterized in that the safety valve main body comprises a valve body 1, the upper end of the valve body is a piston body 2, a piston 3 is arranged in the piston body, the piston moves up and down in the piston body, the top of the piston is further provided with a groove, the opening direction of the groove faces to the inner wall of the piston body, a guide ring 14 is fixed in the groove, the piston further comprises a piston rod, and a spring 15 is arranged between the piston rod and the piston body; a first elastic sealing ring 7 is arranged between the piston rod and the valve body, a nut 8 for blocking the elastic sealing ring is arranged above the first elastic sealing ring and fixed on a gasket 9, a second elastic sealing ring 11 is arranged at the top of the piston, a retainer ring 12 is arranged above the second elastic sealing ring, and a clamp spring 13 is fixed above the retainer ring.
The utility model discloses a thereby increase two elastic sealing circle and can improve holistic sealed effect between piston and valve body to every elastic sealing circle top all is provided with and is used for fixed spacing part, and then can prevent not hard up of elastic sealing circle. The utility model discloses an increase the movement track that the guide ring can be convenient for restrict the piston. The utility model discloses a retaining ring carries on spacingly with the second elastic sealing ring that the jump ring is right.
Further preferably, the end of the piston is connected to a valve flap 5, which is located at the lower end of the valve body. The utility model discloses an optimize the structure of traditional relief valve to can further reduce the volume of relief valve.
Further preferably, two channels 6 are formed in the valve body, the interior of the valve body is communicated with the exterior through the two channels, and the two channels are in an inclined state. The utility model discloses a gaseous business turn over of passageway ability of two slopes can be convenient for.
Further preferably, the lower end of the piston body is inserted into the lower end part of the valve body, the top of the piston body is provided with an opening, and a pressure cap 4 is fixed at the opening of the piston body. The utility model discloses a press the cap can play the effect of steady voltage.
Further preferably, the top of the pressing cap is provided with a circular plate body, the outer diameter of the plate body is larger than that of the piston body, a cylinder is connected to the lower portion of the circular plate body and extends into the piston body, and the circular plate body is fixed to the upper portion of the opening. The utility model discloses a circular plate body can play limiting displacement to pressing the cap.
Preferably, an annular groove is formed at the joint of the cylinder and the circular plate, the opening of the annular groove faces the inner wall of the piston body, and a sealing ring 10 is embedded in the annular groove. Thereby improving the sealing performance of the pressure cap and the piston body.
Preferably, the cylinder is further provided with a groove with a downward opening, and the top of the piston is provided with a bulge matched with the groove. The piston can be limited.
Further preferably, the guide ring is located below the second elastic sealing ring.
Preferably, the valve body is provided with a piston movement breathing channel 16, and the piston movement breathing channel is in an inclined state. The utility model discloses a piston motion breathing passage of slope can be convenient for gaseous business turn over.
Further preferably, the piston movement breathing passage is arranged at the lower end part of the valve body, and an opening of the piston movement breathing passage in the valve body is flush with the gasket.
The end of the piston rod of the piston is provided with a through hole. Facilitating the introduction of gas into the piston chamber.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that for the second person of ordinary skill in the art, without departing from the principles of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (8)
1. The vehicle LNG heat-insulation gas cylinder safety valve with the function of increasing pressure regulation comprises a safety valve main body and is characterized in that the safety valve main body comprises a valve body, the upper end part of the valve body is a piston body, a piston is arranged in the piston body and moves up and down in the piston body, the top of the piston is also provided with a groove, the opening direction of the groove faces to the inner wall of the piston body, a guide ring is fixed in the groove, the piston further comprises a piston rod, and a spring is arranged between the piston rod and the piston body;
the piston rod with be equipped with first elastic sealing ring between the valve body, first elastic sealing ring top is equipped with the nut that blocks elastic sealing ring, the nut is fixed on a gasket, the top of piston is equipped with second elastic sealing ring, the top of second elastic sealing ring is equipped with the retaining ring, the retaining ring top is fixed with the jump ring.
2. The vehicle LNG heat-insulation gas cylinder safety valve with the function of increasing pressure regulation of claim 1, is characterized in that: the tail end of the piston is connected with a valve clack, and the valve clack is located at the lower end of the valve body.
3. The vehicle LNG heat-insulation gas cylinder safety valve with the function of increasing pressure regulation of claim 1, is characterized in that: the valve body is provided with two channels, the inside of the valve body is communicated with the outside through the two channels, and the two channels are in an inclined state.
4. The vehicle LNG heat-insulation gas cylinder safety valve with the function of increasing pressure regulation of claim 1, is characterized in that: the lower end of the piston body is inserted into the lower end portion of the valve body, an opening is formed in the top of the piston body, and a pressing cap is fixed at the opening of the piston body.
5. The vehicle LNG heat-insulation gas cylinder safety valve with the function of increasing pressure regulation according to claim 4, characterized in that: the top of the pressing cap is provided with a circular plate body, the outer diameter of the plate body is larger than that of the piston body, a cylinder is connected to the lower portion of the circular plate body and extends into the piston body, and the circular plate body is fixed to the upper portion of the opening.
6. The vehicle LNG heat-insulation gas cylinder safety valve with the function of increasing pressure regulation of claim 5, is characterized in that: the connecting part of the cylinder and the circular plate body is provided with an annular groove, the opening of the annular groove faces the inner wall of the piston body, and a sealing ring is embedded in the annular groove.
7. The vehicle LNG heat-insulation gas cylinder safety valve with the function of increasing pressure regulation of claim 5, is characterized in that: the cylinder is further provided with a groove with a downward opening, and the top of the piston is provided with a bulge matched with the groove.
8. The vehicle LNG heat-insulation gas cylinder safety valve with the function of increasing pressure regulation of claim 1, is characterized in that: a piston movement breathing channel is formed in the valve body and is in an inclined state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023180762.4U CN214404829U (en) | 2020-12-25 | 2020-12-25 | Automobile-used LNG adiabatic gas cylinder relief valve with increase pressure regulating function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023180762.4U CN214404829U (en) | 2020-12-25 | 2020-12-25 | Automobile-used LNG adiabatic gas cylinder relief valve with increase pressure regulating function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214404829U true CN214404829U (en) | 2021-10-15 |
Family
ID=78041047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023180762.4U Active CN214404829U (en) | 2020-12-25 | 2020-12-25 | Automobile-used LNG adiabatic gas cylinder relief valve with increase pressure regulating function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214404829U (en) |
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2020
- 2020-12-25 CN CN202023180762.4U patent/CN214404829U/en active Active
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