CN219432549U - Gas pressure reducing valve - Google Patents
Gas pressure reducing valve Download PDFInfo
- Publication number
- CN219432549U CN219432549U CN202320853854.9U CN202320853854U CN219432549U CN 219432549 U CN219432549 U CN 219432549U CN 202320853854 U CN202320853854 U CN 202320853854U CN 219432549 U CN219432549 U CN 219432549U
- Authority
- CN
- China
- Prior art keywords
- lifting rod
- gas pressure
- pressure reducing
- reducing valve
- guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Control Of Fluid Pressure (AREA)
Abstract
The utility model relates to the technical field of valves, and discloses a gas pressure reducing valve, which comprises: the lifting rod mechanism comprises a diaphragm and a lifting rod arranged in the housing, a lifting adjusting cover is arranged in the housing, a first compression spring is arranged between the adjusting cover and the diaphragm, the adjusting cover is used for adjusting the telescopic length of the first compression spring to adjust the elastic force of the first compression spring, an anti-toppling mechanism used for preventing the lifting rod from toppling is arranged in the housing, the anti-toppling mechanism comprises a limiting through groove arranged on the adjusting cover, and the upper end of the lifting rod is arranged in the limiting through groove to limit. The gas pressure reducing valve is provided with the anti-toppling mechanism, so that the diaphragm can be prevented from tilting under the working condition of large flow, the output pressure is ensured to be stable, and the gas pressure reducing valve is more reliable to use.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a gas pressure reducing valve.
Background
The gas pressure reducing valve is a gas valve device used in a gas system and used for reducing output pressure and stabilizing output pressure, an air inlet channel and a gas cavity are arranged in the pressure reducing valve, and a vent between the air inlet channel and the gas cavity is in a normally open state.
In the existing gas pressure reducing valves, a pressure reducing mechanism and a lifting rod mechanism are arranged in a shell of the existing gas pressure reducing valves, the lifting rod mechanism comprises a lifting rod and a diaphragm, when the existing gas pressure reducing valves work under a high-flow working condition, the air pressure acting on the diaphragm is large and is easy to be unevenly distributed, the diaphragm is easy to incline, and finally the air pressure output of an output port is unstable; therefore, the existing gas pressure reducing valves can only meet the working condition requirement of small flow, cannot meet the requirement of stable output of large flow, and are limited in application range.
Disclosure of Invention
First, the technical problem to be solved
The utility model aims to solve the problem of providing a fuel gas pressure reducing valve, which is provided with an anti-toppling mechanism, so that a diaphragm can be prevented from tilting under a high-flow working condition, the output pressure is ensured to be stable, and the fuel gas pressure reducing valve is more reliable to use.
(II) technical scheme
In order to solve the technical problem, the utility model provides a gas pressure reducing valve, comprising: the lifting rod mechanism comprises a diaphragm and a lifting rod which is arranged in the shell in a lifting manner, the pressure reducing mechanism comprises a swinging rod and a valve plug which is arranged on the swinging rod, the swinging rod is hinged on the shell through a hinge shaft, the valve plug is used for sealing a vent hole between the air inlet channel and the vent hole, and one end of the swinging rod is arranged in a mounting groove of the lifting rod; the shell is internally provided with a lifting adjusting cover, a first compression spring is arranged between the adjusting cover and the diaphragm, and the adjusting cover is used for adjusting the telescopic length of the first compression spring so as to adjust the elastic force of the first compression spring; during adjustment, the telescopic length of the first compression spring is adjusted through lifting of the adjustment cover, so that the elastic force of the first compression spring to the diaphragm is adjusted, the diaphragm is correspondingly deformed, when the adjustment cover descends, the first compression spring drives the diaphragm to deform downwards, so that the lifting rod moves downwards, and the swing rod rotates to increase the flow quantity of the vent hole, so that the flow quantity of the air outlet channel is increased; otherwise, when the regulating cover ascends, the diaphragm deforms upwards, and finally the flow of the air outlet channel is reduced; the membrane is made of nitrile rubber; the lifting rod is characterized in that an anti-toppling mechanism for preventing the lifting rod from toppling is arranged in the shell, the anti-toppling mechanism comprises a limiting through groove arranged on the adjusting cover, the upper end of the lifting rod is arranged in the limiting through groove to limit, so that the lifting rod is not easy to incline, and the diaphragm is prevented from inclining under a high-flow working condition, so that stable output pressure is ensured, and the lifting rod is more reliable to use; the upper limit of the applicable flow range of the product is improved, and the application range is wide.
Further, a first guide inclined plane is formed on the inner wall of the limit through groove, and an arc-shaped convex surface is formed at the upper end of the lifting rod.
Further, the anti-toppling mechanism further comprises a limiting groove formed in the inner side of the shell, and the bottom of the lifting rod is placed in the limiting groove to limit.
Further, a limiting protrusion for limiting the lifting rod is formed on the shell.
Further, a second guide inclined plane is formed on the limiting protrusion, and a third guide inclined plane corresponding to the second guide inclined plane is formed on the lifting rod.
Further, the anti-toppling mechanism further comprises a first tray and a guide frame, wherein the first tray is arranged between the guide frame and the membrane, the upper end of the first compression spring is abutted to the adjusting cover, and the lower end of the first compression spring is abutted to the guide frame.
Further, a plurality of guide blocks are formed on the guide frame, and guide grooves corresponding to the guide blocks are formed on the shell.
Further, a positioning groove for positioning the bottom of the guide frame is formed in the first tray, and the bottom of the guide frame is arranged in the positioning groove.
Further, a second compression spring is arranged between the first tray and the adjusting cover.
Further, the adjusting cover is connected to the shell in a threaded manner.
(III) beneficial effects
The fuel gas pressure reducing valve is provided with the anti-toppling mechanism, so that the diaphragm can be prevented from tilting under the working condition of large flow, the output pressure is ensured to be stable, the use is more reliable, the upper limit of the applicable flow range of a product is improved, and the application range is wide; the bottom of the lifting rod is placed in the limiting groove to limit, so that the bottom of the lifting rod is not easy to displace, and the lifting rod is ensured not to incline; a limiting protrusion for limiting the lifting rod is formed on the shell, so that the lifting rod is not easy to incline; the second guide inclined plane is formed on the limiting bulge, the third guide inclined plane is formed on the lifting rod, and the lifting rod can be guided and corrected through the second guide inclined plane and the third guide inclined plane, so that the lifting rod is not easy to incline when the air pressure in the communicating cavity is increased; a plurality of guide blocks are formed on the guide frame, a guide groove is formed on the shell, and the guide blocks are arranged in the guide groove in a sliding way up and down manner, so that the guide frame is not easy to incline; the positioning groove used for positioning the bottom of the guide frame is arranged on the first tray, so that dislocation is difficult to occur on the bottom of the guide frame relative to the first tray, and the structure is stable and reliable.
Drawings
FIG. 1 is a perspective view of a gas pressure relief valve of the present utility model;
FIG. 2 is a cross-sectional view of a gas pressure relief valve of the present utility model;
fig. 3 is an enlarged view of a portion a in fig. 2;
FIG. 4 is a second cross-sectional view of the gas pressure relief valve of the present utility model;
fig. 5 is an enlarged view of a portion B in fig. 4;
FIG. 6 is a schematic view of the construction of a gas pressure relief valve poppet of the present utility model;
FIG. 7 is a schematic view of the first tray of the gas pressure reducing valve of the present utility model;
FIG. 8 is a schematic view of the guide frame of the gas pressure reducing valve of the present utility model;
FIG. 9 is a schematic view of the guide groove of the gas pressure reducing valve of the present utility model;
FIG. 10 is a schematic diagram of a limiting groove of a gas pressure reducing valve according to the present utility model;
FIG. 11 is a schematic view of the structure of the gas pressure reducing valve regulating cover of the present utility model;
the corresponding component names for each reference number in the figures are: 1 is a shell, 101 is a limit groove, 102 is a limit bulge, 103 is a second guide inclined plane, 104 is a guide groove, 105 is an upper shell, 106 is a lower shell, 2 is a diaphragm, 3 is a lifting rod, 301 is a third guide inclined plane, 302 is an arc convex surface, 4 is an adjusting cover, 401 is a limit through groove, 402 is a first guide inclined plane, 5 is a first compression spring, 6 is a first tray, 601 is a positioning groove, 602 is a reinforcing rib, 7 is a guide frame, 701 is a guide block, 8 is a second compression spring, 9 is a top cover, 11 is an air inlet channel, 12 is an air outlet channel, 13 is a swinging rod, 131 is a mounting groove, 14 is a valve plug, 15 is a communication cavity, 16 is a vent hole, 17 is a hinge shaft, 18 is a plum blossom retainer ring, 19 is a fish eye gasket, 20 is a second tray, 21 is an annular bulge, 22 is a filter screen, 23 is a cross groove, 24 is a pressure relief cavity, and 25 is a pressure relief cavity.
Detailed Description
The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
Referring to fig. 1-11, the present utility model provides a gas pressure reducing valve, comprising: the device comprises a shell 1 and a lifting rod mechanism and a decompression mechanism which are arranged in the shell 1, wherein the shell 1 comprises an upper shell 105 and a lower shell 106 connected with the upper shell 105, an air inlet channel 11 and an air outlet channel 12 are arranged on the shell 1, a communication cavity 15 for communicating the air inlet channel 11 and the air outlet channel 12 is formed in the shell 1, the lifting rod mechanism comprises a diaphragm 2 and a lifting rod 3 which is arranged in the shell 1 in a lifting manner, the decompression mechanism comprises a swinging rod 13 and a valve plug 14 which is arranged on the swinging rod 13, the swinging rod 13 is hinged on the shell 1 through a hinge shaft 17, the valve plug 14 is used for blocking a vent hole 16 between the air inlet channel 11 and the communication cavity 15 so as to change the opening of the vent hole 16, and one end of the swinging rod 13 is arranged in a mounting groove 131 of the lifting rod 3; an adjustable cover 4 which can be lifted is arranged in the shell 1, a first compression spring 5 is arranged between the adjustable cover 4 and the diaphragm 2, and the adjustable cover 4 is used for adjusting the telescopic length of the first compression spring 5 so as to adjust the elastic force of the first compression spring; during adjustment, the lifting of the cover 4 is adjusted to adjust the telescopic length of the first compression spring 5, so that the elastic force of the first compression spring 5 to the membrane 2 is adjusted to enable the membrane 2 to be correspondingly deformed, when the adjustment cover 4 descends, the first compression spring 5 drives the membrane 2 to be downwards deformed, so that the lifting rod 3 moves downwards, the swing rod 13 rotates to increase the flow of the vent hole 16, and the flow of the air outlet channel 12 is increased; otherwise, when the adjusting cover 4 ascends, the diaphragm 2 deforms upwards, and finally the flow of the air outlet channel 12 is reduced; the membrane 2 is made of nitrile rubber; the anti-toppling mechanism for preventing the lifting rod 3 from toppling is arranged in the shell 1 and comprises a limiting through groove 401 arranged on the adjusting cover 4, the upper end of the lifting rod 3 is arranged in the limiting through groove 401 to limit, so that the lifting rod 3 is not easy to incline, and the diaphragm is prevented from inclining under a large-flow working condition, so that stable output pressure is ensured, and the use is more reliable; the upper limit of the applicable flow range of the product is improved, and the application range is wide.
Referring to fig. 1-3, a first guiding inclined plane 402 is formed at the lower part of the inner wall of the limit through groove 401, and an arc convex plane 302 is formed at the upper end of the lifting rod 3; when the adjusting cover 4 is installed, the upper end of the lifting rod 3 is conveniently led into the limit through groove 401 for limit.
Referring to fig. 1, 2, 6 and 10, the anti-toppling mechanism further comprises a limiting groove 101 formed on the inner side of the shell 1, wherein the limiting groove 101 is formed below the lifting rod 3, the bottom of the lifting rod 3 is placed in the limiting groove 101 to limit, so that displacement of the bottom of the lifting rod 3 is not easy to occur, the lifting rod 3 is further ensured not to incline, and the membrane 2 is prevented from inclining under a high-flow working condition so as to ensure stable output of flow.
Referring to fig. 4, 5, 6 and 10, a limiting protrusion 102 for limiting the lifting rod 3 is formed on the shell 1, two limiting protrusions 102 are oppositely arranged, and the lifting rod 3 is arranged between the two limiting protrusions 102 for limiting, so that the lifting rod 3 is not easy to incline; the second guide inclined plane 103 is formed on the limiting protrusion 102, the third guide inclined plane 301 corresponding to the second guide inclined plane 103 is formed on the lifting rod 3, when the flow of the air outlet channel 12 is regulated, the lifting rod 3 moves downwards, the lifting rod 3 can be guided and corrected through the second guide inclined plane 103 and the third guide inclined plane 301, the lifting rod 3 is not easy to incline when the air pressure in the communication cavity 15 is increased, and then the membrane 2 is not easy to incline.
Referring to fig. 2, 7, 8 and 9, the anti-toppling mechanism further includes a first tray 6 and a guide frame 7, where a plurality of reinforcing ribs 602 are annularly disposed on the first tray 6, so that the first tray 6 is not easy to deform; the lower side of the first tray 6 is abutted against the membrane 2, and the membrane 2 can be prevented from tilting to a certain extent even when the first tray 6 is not tilted; the first tray 6 is arranged between the guide frame 7 and the diaphragm 2, the upper end of the first compression spring 5 is propped against the adjusting cover 4, the lower end of the first compression spring 5 is propped against the guide frame 7, the bottom of the guide frame 7 is annularly propped against the first tray 6, and the first tray 6 is relatively uniformly stressed, so that the first tray 6 is not easy to incline; a plurality of guide blocks 701 are formed on the guide frame 7, and three guide blocks 701 are provided in this embodiment; the shell 1 is provided with the guide groove 104 corresponding to the guide block 701, and the guide block 701 is arranged in the guide groove 104 in a sliding way up and down, so that the guide frame 7 is not easy to incline, and the first tray 6 and the membrane 2 are not easy to incline; the positioning groove 601 for positioning the bottom of the guide frame 7 is formed in the first tray 6, the bottom of the guide frame 7 is arranged in the positioning groove 601, so that dislocation is not easy to occur on the bottom of the guide frame 7 relative to the first tray 6, the membrane 2 is prevented from tilting, and the structure is stable and reliable; if the bottom of the guide frame 7 is displaced relative to the first tray 6, the first tray 6 may be inclined due to uneven stress, and the diaphragm 2 may be inclined.
Referring to fig. 1, 2, 3 and 6, the lifting rod 3 is integrally formed with a second tray 20, an annular protrusion 21 is formed on the second tray 20, and the upper end of the annular protrusion 21 abuts against the membrane 2, so that the membrane 2 is not easy to incline; a second compression spring 8 is arranged between the first tray 6 and the adjusting cover 4, so that the elasticity between the first tray 6 and the adjusting cover 4 is increased, a gap is not easily formed between the diaphragm 2 and the annular bulge 21 due to overlarge air pressure in the communication cavity 15, and fuel gas can leak to the pressure release cavity 25 in the shell 1 through the gap; if leakage occurs, the fuel gas in the pressure relief cavity 25 can be discharged through the pressure relief opening 22 on the shell 1, and a stainless steel filter screen 23 is arranged at the pressure relief opening 22 to prevent dust and other impurities from entering the shell 1; the pressure relief opening 22 can be also connected with an exhaust pipe (not shown in the figure) in a screwed manner, so that leaked gas is discharged outdoors through the exhaust pipe, and the safety is ensured; a plum blossom check ring 18 and a fish eye gasket 19 are arranged between the adjusting cover 4 and the second compression spring 8, the upper end of the second compression spring 8 is abutted against the fish eye gasket 19, and the plum blossom check ring 18 and the fish eye gasket 19 enable the upper end of the second compression spring 8 not to easily displace; the lower end of the second compression spring 8 abuts against the first tray 6.
Referring to fig. 1, 2 and 11, the adjustment cap 4 is screw-coupled to the housing 1, and a cross groove 24 is formed on the adjustment cap 4, and the cross groove 24 facilitates a user to rotate the adjustment cap 4 to raise or lower the adjustment cap 4; the top cover 25 is screwed on the shell 1, the top cover 25 is arranged above the adjusting cover 4, the top cover 25 plays a role in dust prevention and water prevention, and the adjusting cover 4 can be rotated and adjusted after the top cover 25 is screwed down, so that the operation is convenient.
According to the gas pressure reducing valve, the positioning groove for positioning the bottom of the guide frame is formed in the first tray, so that dislocation is not easy to occur on the bottom of the guide frame relative to the first tray, and the structure is stable and reliable; the anti-toppling mechanism is arranged, so that the diaphragm can be prevented from tilting under the working condition of high flow, the output pressure is ensured to be stable, the use is more reliable, the upper limit of the applicable flow range of the product is improved, and the application range is wide; the bottom of the lifting rod is placed in the limiting groove to limit, so that the bottom of the lifting rod is not easy to displace, and the lifting rod is ensured not to incline; a limiting protrusion for limiting the lifting rod is formed on the shell, so that the lifting rod is not easy to incline; the second guide inclined plane is formed on the limiting bulge, the third guide inclined plane is formed on the lifting rod, and the lifting rod can be guided and corrected through the second guide inclined plane and the third guide inclined plane, so that the lifting rod is not easy to incline when the air pressure in the communicating cavity is increased; a plurality of guide blocks are formed on the guide frame, a guide groove is formed in the shell, and the guide blocks are arranged in the guide groove in a sliding mode up and down, so that the guide frame is not easy to incline.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (10)
1. A gas pressure relief valve comprising: the lifting rod mechanism comprises a membrane (2) and a lifting rod (3) which is arranged in the shell (1) in a lifting manner, and is characterized in that an adjusting cover (4) which is arranged in the shell (1) in a lifting manner is arranged between the adjusting cover (4) and the membrane (2), a first compression spring (5) is arranged between the adjusting cover (4) and the membrane (2), the adjusting cover (4) is used for adjusting the telescopic length of the first compression spring (5) so as to adjust the elastic force of the first compression spring, an anti-toppling mechanism which is used for preventing the lifting rod (3) from toppling is arranged in the shell (1), the anti-toppling mechanism comprises a limiting through groove (401) which is arranged on the adjusting cover (4), and the upper end of the lifting rod (3) is arranged in the limiting through groove (401) to limit.
2. The gas pressure reducing valve according to claim 1, wherein a first guide inclined surface (402) is formed on the inner wall of the limit through groove (401), and an arc convex surface (302) is formed on the upper end of the lifting rod (3).
3. The gas pressure reducing valve according to claim 1, wherein the anti-toppling mechanism further comprises a limiting groove (101) formed on the inner side of the shell (1), and the bottom of the lifting rod (3) is placed in the limiting groove (101) for limiting.
4. The gas pressure reducing valve according to claim 1, wherein a limit projection (102) for limiting the lifting lever (3) is formed on the housing (1).
5. The gas pressure reducing valve according to claim 4, wherein a second guide slope (103) is formed on the limit projection (102), and a third guide slope (301) corresponding to the second guide slope (103) is formed on the lifting lever (3).
6. The gas pressure reducing valve according to claim 1, wherein the anti-toppling mechanism further comprises a first tray (6) and a guide frame (7), the first tray (6) is arranged between the guide frame (7) and the diaphragm (2), the upper end of the first compression spring (5) is abutted against the adjusting cover (4), and the lower end of the first compression spring (5) is abutted against the guide frame (7).
7. The gas pressure reducing valve according to claim 6, wherein a plurality of guide blocks (701) are formed on the guide frame (7), and guide grooves (104) corresponding to the guide blocks (701) are formed on the housing (1).
8. The gas pressure reducing valve according to claim 6, wherein a positioning groove (601) for positioning the bottom of the guide frame (7) is arranged on the first tray (6), and the bottom of the guide frame (7) is arranged in the positioning groove (601).
9. The gas pressure reducing valve according to claim 6, characterized in that a second compression spring (8) is arranged between the first tray (6) and the regulating cover (4).
10. The gas pressure reducing valve according to any one of claims 1 to 9, characterized in that the regulating cap (4) is screwed onto the housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320853854.9U CN219432549U (en) | 2023-04-17 | 2023-04-17 | Gas pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320853854.9U CN219432549U (en) | 2023-04-17 | 2023-04-17 | Gas pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219432549U true CN219432549U (en) | 2023-07-28 |
Family
ID=87337923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320853854.9U Active CN219432549U (en) | 2023-04-17 | 2023-04-17 | Gas pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219432549U (en) |
-
2023
- 2023-04-17 CN CN202320853854.9U patent/CN219432549U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4556084A (en) | Air admittance valve | |
| CN109185516B (en) | Lever type gas pressure regulator | |
| CN219432549U (en) | Gas pressure reducing valve | |
| KR100671271B1 (en) | Gas regulator | |
| US4787416A (en) | Regulator means for automatically shutting pipeline passage off during pressure reducing failure | |
| US20240026985A1 (en) | Check valve for low pressure operating conditions | |
| WO2019019523A1 (en) | Safety valve having double-sealing function | |
| CN218582297U (en) | Locking gate valve with pressure relief function | |
| CN114483395A (en) | Fuel tank cap and fuel tank | |
| KR101175926B1 (en) | Normal open steam valve | |
| CN115614520B (en) | Automatic bleeding valve | |
| CN108223869B (en) | Marine high-pressure air back pressure valve | |
| CN212718229U (en) | Pressure limiting valve suitable for vacuum fresh-keeping machine | |
| CN110542013B (en) | Floating ball type drain valve | |
| CN110553069B (en) | Fluid pressure stabilizing valve | |
| KR100826044B1 (en) | Liquid control valve | |
| KR200216890Y1 (en) | Pressure regulating valve | |
| CN216447490U (en) | Pressure reducing valve comprising vacuum breaker | |
| KR100740567B1 (en) | Liquid level measurement apparatus | |
| CN220293432U (en) | Pressure release valve of pressure cooker | |
| CN218992480U (en) | Pressure reducing valve | |
| CN218954135U (en) | Automatic and rapid pressure regulating valve for aerospace | |
| CN217951332U (en) | Cold air blow-off valve with safety blow-off function | |
| CN217713655U (en) | Lifting button assembly of gas pressure regulator and pressure regulator equipment | |
| CN221145417U (en) | Pressure regulating valve with pressure relief function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |