CN221004026U - Pressure maintaining valve for gas cylinder - Google Patents
Pressure maintaining valve for gas cylinder Download PDFInfo
- Publication number
- CN221004026U CN221004026U CN202322848362.3U CN202322848362U CN221004026U CN 221004026 U CN221004026 U CN 221004026U CN 202322848362 U CN202322848362 U CN 202322848362U CN 221004026 U CN221004026 U CN 221004026U
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- detection
- valve body
- pressure maintaining
- shell
- maintaining valve
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- 238000001514 detection method Methods 0.000 claims abstract description 109
- 238000007789 sealing Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of gas cylinder valves, and discloses a gas cylinder pressure maintaining valve, which comprises a pressure maintaining valve body, wherein a detection shell component is arranged at the bottom of the pressure maintaining valve body, and comprises: a detection housing; the gas cylinder connector is fixedly connected to the bottom of the detection shell; the detection air passage is formed in the detection shell; the inside swing joint of detection air flue has leak detection subassembly, leak detection subassembly includes: the detection grooves are symmetrically formed in the detection shell; through setting up the detection shell subassembly, be equipped with the leak detection subassembly in the detection shell subassembly, before the pressure-maintaining valve uses, can directly install the detection shell subassembly to the inlet port of valve, in the pressure-maintaining valve use, utilize the measuring rod in the leak detection subassembly to monitor the atmospheric pressure state, when the atmospheric pressure state changes, then represent the valve and leak, the person of facilitating the use in time observes the valve condition to in time change.
Description
Technical Field
The utility model relates to the technical field of gas cylinder valves, in particular to a gas cylinder pressure maintaining valve.
Background
The pressure maintaining valve with novel piston is a valve capable of ensuring the purity of gas in a gas cylinder and having a certain pressure. A piston is arranged in a valve body in the prior art, and a sealing gasket at the lower end of the piston is in sealing contact with the valve body; the piston is connected with the lower part of the valve rod, the upper part of the valve rod is provided with a hand wheel, the hand wheel is internally provided with a hand wheel spring, the hand wheel spring is tightly pressed on the valve rod through a hand wheel cover, the guide sleeve is arranged in the screw sleeve, the screw sleeve drives the guide sleeve to pass through the middle of the valve body and the piston and is connected with the air outlet of the valve body, the guide sleeve is propped against the valve body under the action of the guide sleeve spring, and the guide sleeve is in sealing contact with the valve body to form a valve.
In prior art (publication number is CN215569726U, proposes a gas cylinder valve with residual pressure holding device), including valve body, case and valve rod all are located the inside of valve body, the case is located the below of valve rod, the surface of case and the inside threaded connection of valve body, and with the contact of the air inlet end inner roof of valve body, the inside fixed mounting of valve body has residual pressure holding device, and residual pressure holding device includes the pressurize valve case, the surface of pressurize valve case is passed through O shape circle and is cup jointed with the inside slip of valve body, the air inlet has been seted up to the left side surface of valve body, the inner wall of air inlet communicates with each other with the left side surface of pressurize valve case.
In the prior art, in the use process of the gas cylinder pressure maintaining valve, whether the valve is leaked or not can not be automatically detected, and external equipment is required for detection, so that the gas cylinder pressure maintaining valve is more troublesome.
Disclosure of utility model
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides the gas cylinder pressure-maintaining valve which has the advantages that whether the valve leaks or not can be automatically monitored in the use process, so that a user can observe the condition of the valve in time, and the problems that whether the valve leaks or not can not be automatically detected and external equipment is needed for detection and the detection is troublesome in the use process of the gas cylinder pressure-maintaining valve are solved.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a gas cylinder pressure maintaining valve, includes the pressure maintaining valve body, the bottom of pressure maintaining valve body is equipped with detects shell subassembly, it includes to detect shell subassembly:
A detection housing;
The gas cylinder connector is fixedly connected to the bottom of the detection shell;
the detection air passage is formed in the detection shell;
The inside swing joint of detection air flue has leak detection subassembly, leak detection subassembly includes:
The detection grooves are symmetrically formed in the detection shell;
The detection rod is movably connected to the inside of the detection airway;
the pressing plate is fixedly connected to the outer side wall of the detection rod;
the detection head is fixedly connected to the bottom end of the detection rod;
The spring piece is fixedly connected to the top of the pressing plate;
The piezoelectric sensor is arranged in the detection groove and is opposite to the spring piece;
The outer side wall of the detection shell is provided with a signal receiver, and the electrical input end of the signal receiver is electrically connected with the piezoelectric sensor.
Preferably, the pressure maintaining valve body includes:
a valve body;
the valve rod is arranged at the top of the valve body;
The hand wheel is fixedly connected to the top end of the valve rod;
the air outlet connector is arranged at the air outlet end of the valve body;
the air inlet connector is arranged at the air inlet end of the valve body.
Preferably, the detection case assembly further includes:
The valve body joint is arranged at the top of the detection shell, and the detection shell is in threaded connection with the pressure maintaining valve body through the valve body joint.
Preferably, the detection case assembly further includes:
and the O-shaped sealing ring is arranged on the outer side wall of the valve body joint.
Preferably, two pressing plates are arranged, and the two pressing plates are symmetrically arranged on the outer side wall of the detection rod.
Preferably, the detection head is of a circular sheet-like structure.
(III) beneficial effects
Compared with the prior art, the utility model provides the gas cylinder pressure maintaining valve, which has the following beneficial effects:
This gas cylinder pressurize valve through setting up and detecting the shell subassembly, detects and is equipped with the leak detection subassembly in the shell subassembly, before the pressure-keeping valve uses, can directly install the inlet port who detects the shell subassembly to the valve, in the pressure-keeping valve use, utilizes the measuring rod in the leak detection subassembly to monitor the atmospheric pressure state, when the atmospheric pressure state changes, then represents the valve and leak, the person of facilitating the use in time observes the valve condition to in time change.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of the structure of the detection shell assembly according to the present utility model;
FIG. 3 is a schematic diagram of a leak detection assembly according to the present utility model.
In the figure:
10. A pressure maintaining valve body; 11. a valve body; 12. a valve stem; 13. a hand wheel; 14. an air outlet joint; 15. an air inlet joint;
20. A detection housing assembly; 21. a detection housing; 22. a gas cylinder joint; 23. a valve body joint; 24. detecting an air passage; 25. an O-ring seal;
30. a leak detection assembly; 31. a detection groove; 32. a detection rod; 33. a pressing plate; 34. a detection head; 35. a spring piece; 36. a piezoelectric sensor;
40. A signal receiver.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
The utility model provides a gas cylinder pressure maintaining valve, includes pressure maintaining valve body 10, and pressure maintaining valve body 10 includes: a valve body 11; a valve rod 12 provided at the top of the valve body 11; a hand wheel 13 fixedly connected to the top end of the valve rod 12; the air outlet joint 14 is arranged at the air outlet end of the valve body 11; an air inlet joint 15 arranged at the air inlet end of the valve body 11;
The pressure maintaining valve body 10 consists of a valve body 11, a valve rod 12, a hand wheel 13, an air outlet joint 14 and an air inlet joint 15;
The bottom of pressurize valve body 10 is equipped with detects shell subassembly 20, detects shell subassembly 20 and includes: a detection housing 21; a gas cylinder joint 22 fixedly connected to the bottom of the detection housing 21; the valve body joint 23 is arranged at the top of the detection shell 21, and the detection shell 21 is in threaded connection with the pressure maintaining valve body 10 through the valve body joint 23; a detection air passage 24 provided in the detection housing 21; an O-ring 25 provided on the outer side wall of the valve body joint 23;
The detection shell 21 is directly mounted on the air inlet joint 15 of the valve body 11 through the valve body joint 23, so that the disassembly and the replacement are convenient, the bottom air bottle joint 22 is directly connected with an air bottle interface, and air in the air bottle enters the pressure maintaining valve body 10 through the detection air passage 24;
The inside of the detection airway 24 is movably connected with a leak detection assembly 30, the leak detection assembly 30 comprising: the detection groove 31 is symmetrically arranged in the detection shell 21; the detection rod 32 is movably connected to the inside of the detection air passage 24; the two pressing plates 33 are arranged in total, the two pressing plates 33 are symmetrically arranged on the outer side wall of the detection rod 32 and fixedly connected with the outer side wall of the detection rod 32; the detection head 34 is of a circular sheet structure, and is fixedly connected to the bottom end of the detection rod 32; a spring piece 35 fixedly connected to the top of the pressing plate 33; a piezoelectric sensor 36 provided inside the detection groove 31 and disposed opposite to the spring piece 35;
When the pressure maintaining valve body 10 is closed, the detection air passage 24 in the detection shell 21 is in an air pressure balance state, so that the detection rod 32 cannot move, when leakage occurs, the detection air passage 24 in the detection shell 21 is in an air pressure instability state, so that air pushes the detection rod 32 to move through the detection head 34, the pressing plate 33 on the outer side of the detection rod 32 moves, the pressing plate 33 presses the piezoelectric sensor 36 through the spring piece 35, the piezoelectric sensor 36 converts pressure into an electric signal, and leakage information is detected;
The outer side wall of the detection shell 21 is provided with a signal receiver 40, and the electrical input end of the signal receiver 40 is electrically connected with the piezoelectric sensor 36;
the signal receiver 40 receives and uploads the electrical signal of the piezoelectric sensor 36 to the terminal.
Referring to fig. 1-3, during installation, the detection housing 21 is directly installed on the air inlet connector 15 of the valve body 11 through the valve body connector 23, the bottom air bottle connector 22 is directly connected with the air bottle connector, air in the air bottle enters the pressure maintaining valve body 10 through the detection air passage 24, when the pressure maintaining valve body 10 is closed, the detection air passage 24 in the detection housing 21 is in an air pressure balance state, the detection rod 32 cannot move, when leakage occurs, the detection air passage 24 in the detection housing 21 is in an air pressure unstable state, the air pushes the detection rod 32 to move through the detection head 34, the pressing plate 33 on the outer side of the detection rod 32 moves, the pressing plate 33 presses the piezoelectric sensor 36 through the spring piece 35, the piezoelectric sensor 36 converts pressure into an electric signal, leakage information is detected, and finally, the signal receiver 40 receives the electric signal of the piezoelectric sensor 36 and uploads the electric signal to a terminal, so that a worker is reminded of overhauling and maintaining.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a gas cylinder pressure maintaining valve, includes pressure maintaining valve body (10), its characterized in that: the bottom of pressurize valve body (10) is equipped with detects shell subassembly (20), detect shell subassembly (20) include:
a detection housing (21);
The gas cylinder connector (22) is fixedly connected to the bottom of the detection shell (21);
A detection air passage (24) which is arranged in the detection shell (21);
the inside swing joint of detection air flue (24) has leak detection subassembly (30), leak detection subassembly (30) include:
the detection grooves (31) are symmetrically formed in the detection shell (21);
the detection rod (32) is movably connected to the inside of the detection air passage (24);
A pressing plate (33) fixedly connected to the outer side wall of the detection rod (32);
The detection head (34) is fixedly connected to the bottom end of the detection rod (32);
the spring piece (35) is fixedly connected to the top of the pressing plate (33);
a piezoelectric sensor (36) provided inside the detection groove (31) and disposed opposite to the spring piece (35);
The outer side wall of the detection shell (21) is provided with a signal receiver (40), and the electrical input end of the signal receiver (40) is electrically connected with the piezoelectric sensor (36).
2. The cylinder pressure maintaining valve according to claim 1, wherein: the pressure maintaining valve body (10) includes:
A valve body (11);
a valve rod (12) arranged at the top of the valve body (11);
the hand wheel (13) is fixedly connected to the top end of the valve rod (12);
The air outlet joint (14) is arranged at the air outlet end of the valve body (11);
and an air inlet joint (15) which is arranged at the air inlet end of the valve body (11).
3. The cylinder pressure maintaining valve according to claim 1, wherein: the test housing assembly (20) further comprises:
the valve body joint (23) is arranged at the top of the detection shell (21), and the detection shell (21) is in threaded connection with the pressure maintaining valve body (10) through the valve body joint (23).
4. A cylinder pressure maintaining valve according to claim 3, wherein: the test housing assembly (20) further comprises:
And an O-shaped sealing ring (25) arranged on the outer side wall of the valve body joint (23).
5. The cylinder pressure maintaining valve according to claim 1, wherein: two pressing plates (33) are arranged in total, and the two pressing plates (33) are symmetrically arranged on the outer side wall of the detection rod (32).
6. The cylinder pressure maintaining valve according to claim 1, wherein: the detection head (34) is of a circular sheet-like structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322848362.3U CN221004026U (en) | 2023-10-24 | 2023-10-24 | Pressure maintaining valve for gas cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322848362.3U CN221004026U (en) | 2023-10-24 | 2023-10-24 | Pressure maintaining valve for gas cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221004026U true CN221004026U (en) | 2024-05-24 |
Family
ID=91115519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322848362.3U Active CN221004026U (en) | 2023-10-24 | 2023-10-24 | Pressure maintaining valve for gas cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221004026U (en) |
-
2023
- 2023-10-24 CN CN202322848362.3U patent/CN221004026U/en active Active
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