CN214838671U - Novel relief pressure valve is used to CNG jar - Google Patents
Novel relief pressure valve is used to CNG jar Download PDFInfo
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- CN214838671U CN214838671U CN202121215066.4U CN202121215066U CN214838671U CN 214838671 U CN214838671 U CN 214838671U CN 202121215066 U CN202121215066 U CN 202121215066U CN 214838671 U CN214838671 U CN 214838671U
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Abstract
The utility model discloses a CNG jar is with novel relief pressure valve, which comprises an upper shell, the bottom fixedly connected with inferior valve of epitheca, the one end of intake pipe runs through epitheca and the solid fixed cylinder of fixedly connected with, the top fixed connection of solid fixed cylinder is at the interior roof of epitheca, the interior fixedly connected with secondary spring of top middle part of epitheca, the bottom fixedly connected with valve of secondary spring, the bottom side fixedly connected with spring cushion of transmission film, the bottom fixedly connected with main spring of spring cushion, the bottom fixedly connected with adjusting screw of main spring. The utility model discloses in, at first through auxiliary spring, valve, ejector pin and transmission film, can reduce high-pressure natural gas atmospheric pressure, main spring and auxiliary spring can play support and damping effect, and effectual solution is how to drop high-pressure natural gas to stable medium pressure and not fragile technical problem, makes the life of relief pressure valve obtain improving, is worth wideling popularize.
Description
Technical Field
The utility model relates to a pressure reducer technical field especially relates to a CNG jar is with novel relief pressure valve.
Background
The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure through regulation and leads the outlet pressure to be automatically stored and stabilized by the energy of the medium. From the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with variable local resistance, namely, the flow speed and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, thereby achieving the purpose of pressure reduction. Then, the fluctuation of the pressure behind the valve is balanced with the spring force by means of the regulation of the control and regulation system, so that the pressure behind the valve is kept constant within a certain error range.
Chinese patent CN201220610075.8 discloses a liquefied natural gas pressure reducer, which comprises a lower cover assembly, an upper cover assembly, a valve core, a corrugated diaphragm and a screw assembly. The utility model discloses a liquefied natural gas pressure reducer can be low temperature resistant, corrosion-resistant, anti sulphur, ageing resistance. But this utility model also has the unstable problem of step-down, to the CNG jar, still damage easily after long-term the use, life remains to promote.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art, and providing a novel pressure reducing valve for a CNG tank.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a CNG jar is with novel relief pressure valve, includes the epitheca, the bottom fixedly connected with inferior valve of epitheca, one side fixedly connected with intake pipe of epitheca, the opposite side fixedly connected with blast pipe of epitheca, the one end of intake pipe runs through epitheca and the solid fixed cylinder of fixedly connected with, the top fixed connection of solid fixed cylinder is at the interior roof of epitheca, the interior fixedly connected with secondary spring of top middle part of epitheca, the bottom fixedly connected with valve of secondary spring, the bottom side fixedly connected with ejector pin of valve, the bottom fixedly connected with transmission film of ejector pin, the bottom side fixedly connected with spring cushion of transmission film, the bottom fixedly connected with main spring of spring cushion, the bottom fixedly connected with adjusting screw of main spring, adjusting screw's outside threaded connection is in the bottom of inferior valve.
As a further description of the above technical solution:
and a high-pressure gauge is arranged on the outer side of the air inlet pipe.
As a further description of the above technical solution:
and a low-pressure meter is arranged on the outer side of the exhaust pipe.
As a further description of the above technical solution:
and a high-pressure air chamber is arranged in the fixed cylinder.
As a further description of the above technical solution:
and a low-pressure air chamber is arranged in the upper shell.
As a further description of the above technical solution:
an installation cylinder is arranged at the inner bottom of the lower shell.
As a further description of the above technical solution:
the bottom of the fixed cylinder is provided with an opening.
As a further description of the above technical solution:
and a safety valve is arranged on the outer side of the upper shell.
The utility model discloses following beneficial effect has:
the utility model discloses in, at first through the top middle part internal fixation who goes up the shell be connected with the auxiliary spring, through the auxiliary spring, the valve, ejector pin and transmission film, can reduce high-pressure natural gas atmospheric pressure, through spring cushion, the main spring, adjusting screw and inferior valve, can adjust pressure, main spring and auxiliary spring can play support and damping effect, the effectual solution is how to drop high-pressure natural gas to stable medium pressure and not fragile technical problem, make the life of relief pressure valve obtain improving, be worth wideling popularize.
Drawings
Fig. 1 is a schematic structural view of a novel pressure reducing valve for a CNG tank according to the present invention;
fig. 2 is a front view of the novel pressure reducing valve for the CNG tank according to the present invention;
fig. 3 is a front sectional view of the novel pressure reducing valve for the CNG tank of the present invention.
Illustration of the drawings:
1. a lower case; 2. a safety valve; 3. an air inlet pipe; 4. a high pressure gauge; 5. an upper shell; 6. a low pressure gauge; 7. an exhaust pipe; 8. adjusting the screw rod; 9. a low pressure gas chamber; 10. a spring cushion block; 11. a main spring; 12. a transmission film; 13. a top rod; 14. a high pressure gas chamber; 15. a secondary spring; 16. a shutter; 17. a fixed cylinder; 18. and (6) mounting the cylinder.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, the present invention provides an embodiment: a novel pressure reducing valve for a CNG tank comprises an upper shell 5, wherein the bottom end of the upper shell 5 is fixedly connected with a lower shell 1, one side of the upper shell 5 is fixedly connected with an air inlet pipe 3, the other side of the upper shell 5 is fixedly connected with an exhaust pipe 7, when the CNG tank is used, 16MPa high-pressure CNG is connected through the air inlet pipe 3, the exhaust pipe 7 can discharge and reduce the pressure to a stable 0.35MPa outlet pressure, one end of the air inlet pipe 3 penetrates through the upper shell 5 and is fixedly connected with a fixed cylinder 17, the top of the fixed cylinder 17 is fixedly connected with the inner top wall of the upper shell 5, an auxiliary spring 15 is fixedly connected in the middle of the top end of the upper shell 5, the bottom end of the auxiliary spring 15 is fixedly connected with a valve 16, the bottom side of the valve 16 is fixedly connected with an ejector rod 13, the bottom end of the ejector rod 13 is fixedly connected with a transmission film 12, a cushioning effect is achieved through the auxiliary spring 15, the impact resistance of the transmission film 12 is improved, the transmission film 12 is prevented from being damaged, and the service life is prolonged, bottom side fixedly connected with spring cushion 10 of transmission film 12, the bottom fixedly connected with main spring 11 of spring cushion 10, the bottom fixedly connected with adjusting screw 8 of main spring 11, adjusting screw 8's outside threaded connection is in the bottom of inferior valve 1, reciprocates through adjusting screw 8 and adjusts transmission film 12, realizes can adjusting low pressure, and main spring 11 can play support and damping effect.
The outside of intake pipe 3 is provided with high-pressure gauge 4, the outside of blast pipe 7 is provided with low-pressure gauge 6, the atmospheric pressure of CNG is convenient for detect, the inside of solid fixed cylinder 17 is provided with high-pressure gas chamber 14, there is high-pressure CNG in the solid fixed cylinder 17, the inside of epitheca 5 is provided with low-pressure gas chamber 9, high-pressure CNG gets into in the low-pressure gas chamber 9 through solid fixed cylinder 17, discharge from blast pipe 7 after atmospheric pressure is reduced, the interior bottom of inferior valve 1 is provided with installation section of thick bamboo 18, the inner wall sliding connection of installation section of thick bamboo 18 is in the outside of spring cushion 10, be convenient for spring cushion 10 reciprocates, the bottom of solid fixed cylinder 17 is provided with the opening, be convenient for ventilate, the outside of epitheca 5 is provided with relief valve 2, relief valve 2 is in normally closed state, when the CNG pressure in epitheca 5 risees and surpasss the specified value, prevent that the pressure in the epitheca 5 from surpassing specified numerical value through outwards discharging the medium.
The working principle is as follows: when the CNG tank is used, high-pressure natural gas is accessed through the air inlet pipe 3, the exhaust pipe 7 can discharge natural gas decompressed to stable pressure, the pressure of the natural gas is convenient to detect through the high-pressure gauge 4 and the low-pressure gauge 6, the middle part of the top end of the upper shell 5 is fixedly connected with the auxiliary spring 15, the auxiliary spring 15 is connected with the valve 16, the valve 16 is connected with the ejector rod 13, the ejector rod 13 is connected with the transmission film 12, the bottom side of the transmission film 12 is connected with the spring cushion block 10, the bottom end of the spring cushion block 10 is connected with the main spring 11, the bottom end of the main spring 11 is connected with the adjusting screw 8, the outer side of the adjusting screw 8 is in threaded connection with the bottom end of the lower shell 1, the transmission film 12 is adjusted by moving up and down through the adjusting screw 8, pressure can be adjusted, the main spring 11 and the auxiliary spring 15 can play a role in supporting and damping, and the technical problem of how to reduce the high-pressure natural gas to stable medium-pressure and not easy to damage is effectively solved, the service life of the pressure reducing valve is prolonged.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (8)
1. A CNG tank is with novel relief pressure valve, includes epitheca (5), its characterized in that: the bottom end of the upper shell (5) is fixedly connected with a lower shell (1), one side of the upper shell (5) is fixedly connected with an air inlet pipe (3), the other side of the upper shell (5) is fixedly connected with an exhaust pipe (7), one end of the air inlet pipe (3) penetrates through the upper shell (5) and is fixedly connected with a fixed cylinder (17), the top of the fixed cylinder (17) is fixedly connected with the inner top wall of the upper shell (5), an auxiliary spring (15) is fixedly connected in the middle of the top end of the upper shell (5), the bottom end of the auxiliary spring (15) is fixedly connected with a valve (16), the bottom side of the valve (16) is fixedly connected with an ejector rod (13), the bottom end of the ejector rod (13) is fixedly connected with a transmission film (12), the bottom side of the transmission film (12) is fixedly connected with a spring cushion block (10), and the bottom end of the spring cushion block (10) is fixedly connected with a main spring (11), the bottom end of the main spring (11) is fixedly connected with an adjusting screw rod (8), and the outer side of the adjusting screw rod (8) is in threaded connection with the bottom end of the lower shell (1).
2. The novel pressure reducing valve for a CNG tank according to claim 1, wherein: and a high-pressure gauge (4) is arranged on the outer side of the air inlet pipe (3).
3. The novel pressure reducing valve for a CNG tank according to claim 1, wherein: and a low-pressure meter (6) is arranged on the outer side of the exhaust pipe (7).
4. The novel pressure reducing valve for a CNG tank according to claim 1, wherein: the fixed cylinder (17) is internally provided with a high-pressure air chamber (14).
5. The novel pressure reducing valve for a CNG tank according to claim 1, wherein: and a low-pressure air chamber (9) is arranged in the upper shell (5).
6. The novel pressure reducing valve for a CNG tank according to claim 1, wherein: an installation cylinder (18) is arranged at the inner bottom of the lower shell (1).
7. The novel pressure reducing valve for a CNG tank according to claim 1, wherein: the bottom end of the fixed cylinder (17) is provided with an opening.
8. The novel pressure reducing valve for a CNG tank according to claim 1, wherein: and a safety valve (2) is arranged on the outer side of the upper shell (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121215066.4U CN214838671U (en) | 2021-06-02 | 2021-06-02 | Novel relief pressure valve is used to CNG jar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121215066.4U CN214838671U (en) | 2021-06-02 | 2021-06-02 | Novel relief pressure valve is used to CNG jar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214838671U true CN214838671U (en) | 2021-11-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121215066.4U Active CN214838671U (en) | 2021-06-02 | 2021-06-02 | Novel relief pressure valve is used to CNG jar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214838671U (en) |
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2021
- 2021-06-02 CN CN202121215066.4U patent/CN214838671U/en active Active
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