Gas pressure regulator with blow-off valve

Abstract

The fuel gas pressure regulator comprises a valve body, a partition plate fixedly connected to the side inner wall of the valve body, an upper sealing plate slidably connected to the interior of the partition plate, a second guide rod fixedly connected to the upper surface of the upper sealing plate, an upper diaphragm fixedly connected to the side inner wall of the valve body, an upper supporting plate fixedly connected to the center of the upper diaphragm, and a lower supporting plate fixedly connected to the center of the upper supporting plate. The upper surface of the upper supporting plate is fixedly connected with an upper supporting spring, the upper surface of the upper supporting plate is fixedly connected with a first guide rod, the upper surface of the valve body is fixedly connected with an upper supporting shell, the lower surface of the valve body is fixedly connected with a lower supporting shell, and clamping grooves are formed in the right surface of the second guide rod and the left surface of the first guide rod. Supporting shafts are rotationally connected to the front inner walls and the rear inner walls of the upper supporting shell and the lower supporting shell, gears are fixedly connected to the side inner walls of the supporting shafts, an input pipe is fixedly connected to the left surface of the valve body, an output pipe is fixedly connected to the right surface of the valve body, and through the devices, the working reliability and stability of the pressure regulator can be improved.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to a gas pressure regulator with a vent valve. Background Technology

[0002] In the process of piped gas transmission and distribution, when there are no users using gas downstream of the pressure regulator, the regulator will automatically close, making the gas flow through the regulator zero. At this time, the outlet of the pressure regulator is in a sealed state. In this sealed state, if the ambient temperature around the downstream pipeline rises or the pressure regulator leaks between upstream and downstream, the pressure in the downstream pipeline will continue to rise, thus threatening the safety of gas-using equipment on the downstream pipeline. In traditional gas pressure regulators, a single closing mechanism may be used to control the flow of gas and regulate pressure. A single mechanism is prone to damage when operating for a long time or under abnormal pressure shocks, causing the pressure regulator to malfunction and even causing safety accidents. For example, Chinese patent discloses "A Gas Pressure Regulator with a Venting Valve" (application number: 202220855894.2), which combines the gas pressure venting component with the gas pressure regulator, combining the functions of gas pressure regulation and safety venting, reducing the number of devices and the overall size, and reducing the manufacturing cost of the equipment. However, this device only has a single closing structure, and it will still malfunction after damage. Utility Model Content

[0003] The purpose of this invention is to provide a gas pressure regulator with a vent valve to solve the technical problems existing in the prior art.

[0004] This utility model also provides a gas pressure regulator with a vent valve as described above, comprising: a valve body; a partition plate fixedly connected to the inner side wall of the valve body; an upper sealing plate slidably connected inside the partition plate; a guide rod two fixedly connected to the upper surface of the upper sealing plate; an upper diaphragm fixedly connected to the inner side wall of the valve body; an upper support plate fixedly connected to the center of the upper diaphragm; an upper support spring fixedly connected to the upper surface of the upper support plate; a guide rod one fixedly connected to the upper surface of the upper support plate; an upper support shell fixedly connected to the upper surface of the valve body; a lower support shell fixedly connected to the lower surface of the valve body; slots provided on the right surface of the guide rod two and the left surface of the guide rod one; a support shaft rotatably connected to the front and rear inner walls of the upper and lower support shells; a gear fixedly connected to the inner side wall of the support shaft; an input pipe fixedly connected to the left surface of the valve body; and an output pipe fixedly connected to the right surface of the valve body. This device improves the reliability and stability of the pressure regulator's operation.

[0005] According to the present invention, a gas pressure regulator with a vent valve is provided, wherein a lower diaphragm is fixedly connected to the inner side wall of the valve body, and a lower support plate is fixedly connected to the center of the lower diaphragm. The above device is beneficial to realize the lower diaphragm's sensing of pressure and the transmission of motion with the help of the lower support plate.

[0006] According to the present invention, a gas pressure regulator with a vent valve is provided, wherein a guide rod three is fixedly connected to the lower surface of the lower support plate, and a lower sealing plate is slidably connected inside the partition plate. The above device is beneficial for providing the installation position of the guide rod three and the lower sealing plate.

[0007] According to the present invention, a gas pressure regulator with a vent valve is provided. Through the above device, a guide rod four is fixedly connected to the lower surface of the lower sealing plate, and a lower support spring is fixedly connected to the lower surface of the lower support plate. This facilitates the connection between the guide rod four and the lower sealing plate and provides elastic support for the lower support plate.

[0008] According to the present invention, a gas pressure regulator with a vent valve is provided, wherein the input pipe, valve body, output pipe and partition are connected, and the upper sealing plate is located directly below the lower sealing plate. The above device is beneficial to the flow of gas.

[0009] According to the present invention, a gas pressure regulator with a vent valve is provided, wherein the slot is simultaneously provided on the left surface of guide rod three and the right surface of guide rod four, and the gear meshes with the slot to rotate. Through the above device, the meshing rotation of the gear is beneficial to move guide rod two and guide rod four.

[0010] According to the present invention, a gas pressure regulator with a vent valve is provided, wherein the first guide rod penetrates the upper surface of the valve body and the third guide rod penetrates the lower surface of the valve body. The above device helps to ensure that the first guide rod and the third guide rod can mesh and rotate with the gear.

[0011] According to the present invention, a gas pressure regulator with a vent valve is provided, wherein the upper end of the upper support spring is fixedly connected to the upper top wall of the valve body, and the lower end of the lower support spring is fixedly connected to the lower bottom wall of the valve body. The above device is beneficial to the stability of the upper support spring and the lower support spring.

[0012] Compared with existing technologies, this gas pressure regulator, through a double-closed structure composed of an upper sealing plate and a lower sealing plate, when the output gas pressure is abnormal, the upper diaphragm and the lower diaphragm drive guide rod one and guide rod three respectively, so that the grooves on guide rod one and guide rod three mesh with gears. Then, under the meshing action of gears and guide rod two and guide rod four, the upper and lower sealing plates move to close the partition. This helps to avoid the problem of work stoppage caused by the failure of a single closing mechanism, and improves the reliability and stability of the pressure regulator. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Figure 1 This is a right-side structural view of the gas pressure regulator of this utility model;

[0015] Figure 2 This is a diagram showing the internal structure of the gas pressure regulator of this utility model;

[0016] Figure 3 This is a cross-sectional structural diagram of the gas pressure regulator of this utility model;

[0017] Figure 4 This is a left-side structural view of the gas pressure regulator of this utility model.

[0018] Legend:

[0019] 1. Valve body; 2. Upper support shell; 3. Lower support shell; 4. Output pipe; 5. Input pipe; 6. Upper diaphragm; 7. Upper support plate; 8. Guide rod one; 9. Guide rod two; 10. Support shaft; 11. Gear; 12. Slot; 13. Upper support spring; 14. Lower diaphragm; 15. Lower support plate; 16. Lower support spring; 17. Guide rod three; 18. Guide rod four; 19. Upper sealing plate; 20. Lower sealing plate; 21. Partition plate. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4This utility model discloses a gas pressure regulator with a vent valve, comprising: a valve body 1; a partition 21 fixedly connected to the inner side wall of the valve body 1; an upper sealing plate 19 slidably connected inside the partition 21; a guide rod 9 fixedly connected to the upper surface of the upper sealing plate 19; an upper diaphragm 6 fixedly connected to the inner side wall of the valve body 1; an upper support plate 7 fixedly connected to the center of the upper diaphragm 6; an upper support spring 13 fixedly connected to the upper surface of the upper support plate 7; the upper end of the upper support spring 13 fixedly connected to the upper top wall of the valve body 1; and the upper surface of the upper support plate 7 fixedly connected to... There is a guide rod 8 that passes through the upper surface of the valve body 1. The upper support shell 2 is fixedly connected to the upper surface of the valve body 1. The right surface of the guide rod 9 and the left surface of the guide rod 8 are both provided with slots 12. The front and rear inner walls of the upper support shell 2 are rotatably connected to the support shaft 10. The side inner wall of the support shaft 10 is fixedly connected to the gear 11. The left surface of the valve body 1 is fixedly connected to the input pipe 5, and the right surface of the valve body 1 is fixedly connected to the output pipe 4. The input pipe 5, the valve body 1, the output pipe 4, and the partition 21 are connected. The gear 11 meshes with the slot 12 and rotates.

[0022] Specifically, the gas enters the valve body 1 of the regulator's vent valve from the input pipe 5, passes through the partition 21 area, and is output from the output pipe 4. When the output gas pressure is too high, the gas pressure acts on the upper diaphragm 6, and the upper diaphragm 6 will deform accordingly according to the pressure. The upper support plate 7, which is fixedly connected to the center of the upper diaphragm 6, will move accordingly, thereby compressing the upper support spring 13. When the upper support plate 7 moves, it drives the guide rod 8 to move upward. At the same time, due to the meshing and rotation of the slot 12 and the gear 11, it drives the guide rod 9 to move downward. Since the guide rod 9 is connected to the upper sealing plate 19, the upper sealing plate 19 will move with the downward movement of the guide rod 9, thereby closing the partition 21.

[0023] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A lower support shell 3 is fixedly connected to the lower surface of the valve body 1. A lower diaphragm 14 is fixedly connected to the inner side wall of the valve body 1. A lower support plate 15 is fixedly connected to the center of the lower diaphragm 14. A guide rod 17 is fixedly connected to the lower surface of the lower support plate 15. The guide rod 17 passes through the lower surface of the valve body 1. A lower support spring 16 is fixedly connected to the lower surface of the lower support plate 15. The lower end of the lower support spring 16 is fixedly connected to the lower bottom wall of the valve body 1. A lower sealing plate 20 is slidably connected inside the partition plate 21. A guide rod 18 is fixedly connected to the lower surface of the lower sealing plate 20. An upper sealing plate 19 is located directly below the lower sealing plate 20. A slot 12 is simultaneously provided on the left surface of the guide rod 17 and the right surface of the guide rod 18. A support shaft 10 is rotatably connected to the front and rear inner walls of the lower support shell 3. A gear 11 is fixedly connected to the inner side wall of the support shaft 10. The gear 11 meshes with the slot 12 and rotates.

[0024] Specifically, when the internal gas pressure output of the vent valve body 1 changes, the pressure will act on the lower diaphragm 14 simultaneously. The lower diaphragm 14 will deform accordingly according to the pressure. Since the lower support plate 15 is fixedly connected to its center, it will drive the lower support plate 15 to move downward, thereby compressing the lower support spring 16. When the lower support plate 15 moves, it will drive the guide rod 17 to move downward. At the same time, due to the meshing and rotation of the slot 12 and the gear 11, it will drive the guide rod 18 to move upward. Since the guide rod 18 is connected to the lower sealing plate 20, the lower sealing plate 20 will move with the upward movement of the guide rod 18, thereby closing the partition 21. Through the double closing structure, the problem of work stoppage caused by the failure of a single closing mechanism is avoided.

[0025] Working principle: Gas enters the valve body 1 of the regulator's vent valve from the input pipe 5, passes through the partition 21 area, and is output from the output pipe 4. When the output gas pressure is too high, the pressure acts on the upper diaphragm 6, causing it to deform. This causes the upper support plate 7 to move and compress the upper support spring 13. The upper support plate 7 then moves the guide rod 8 upward. Because the groove 12 on the left surface of the guide rod 8 meshes with the gear 11 on the support shaft 10 inside the upper support housing 2, the guide rod 9 moves downward, causing the upper sealing plate 19 to move downward and close the partition 21. Simultaneously... The pressure also acts on the lower diaphragm 14, causing it to deform and drive the lower support plate 15 to move downward, compressing the lower support spring 16. The lower support plate 15 drives the guide rod 17 to move downward. Because the groove 12 on the left surface of the guide rod 17 meshes with the gear 11 on the support shaft 10 inside the lower support shell 3, the guide rod 18 moves upward, thereby causing the lower sealing plate 20 to move upward and close the partition 21. Through the double closing structure composed of the upper sealing plate 19 and the lower sealing plate 20, the problem of work stoppage caused by the failure of a single closing mechanism is avoided.

[0026] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A gas pressure regulator with a vent valve, characterized in that, include: A valve body (1) has a partition plate (21) fixedly connected to its inner side wall. An upper sealing plate (19) is slidably connected inside the partition plate (21). A guide rod (9) is fixedly connected to the upper surface of the upper sealing plate (19). An upper diaphragm (6) is fixedly connected to the inner side wall of the valve body (1). An upper support plate (7) is fixedly connected to the center of the upper diaphragm (6). An upper support spring (13) is fixedly connected to the upper surface of the upper support plate (7). A guide rod (8) is fixedly connected to the upper surface of the upper support plate (7). (1) The upper surface of the valve body (1) is fixedly connected to the upper support shell (2), the lower surface of the valve body (1) is fixedly connected to the lower support shell (3), the right surface of the guide rod (9) and the left surface of the guide rod (8) are both provided with slots (12), the front and rear inner walls of the upper support shell (2) and the lower support shell (3) are rotatably connected to the support shaft (10), the inner side wall of the support shaft (10) is fixedly connected to the gear (11), the left surface of the valve body (1) is fixedly connected to the input pipe (5), and the right surface of the valve body (1) is fixedly connected to the output pipe (4).

2. A gas pressure regulator with a vent valve according to claim 1, characterized in that, A lower diaphragm (14) is fixedly connected to the inner side wall of the valve body (1), and a lower support plate (15) is fixedly connected to the center of the lower diaphragm (14).

3. A gas pressure regulator with a vent valve according to claim 2, characterized in that, The lower surface of the lower support plate (15) is fixedly connected to the guide rod three (17), and the interior of the partition plate (21) is slidably connected to the lower sealing plate (20).

4. A gas pressure regulator with a vent valve according to claim 3, characterized in that, The lower support plate (15) is fixedly connected to the lower support spring (16), and the lower sealing plate (20) is fixedly connected to the guide rod (18).

5. A gas pressure regulator with a vent valve according to claim 1, characterized in that, The input pipe (5), valve body (1), output pipe (4), and partition (21) are connected, and the upper sealing plate (19) is located directly below the lower sealing plate (20).

6. A gas pressure regulator with a vent valve according to claim 4, characterized in that, The slot (12) is simultaneously located on the left surface of guide rod three (17) and the right surface of guide rod four (18), and the gear (11) meshes with the slot (12) to rotate.

7. A gas pressure regulator with a vent valve according to claim 3, characterized in that, The first guide rod (8) penetrates the upper surface of the valve body (1), and the third guide rod (17) penetrates the lower surface of the valve body (1).

8. A gas pressure regulator with a vent valve according to claim 4, characterized in that, The upper end of the upper support spring (13) is fixedly connected to the upper top wall of the valve body (1), and the lower end of the lower support spring (16) is fixedly connected to the lower bottom wall of the valve body (1).

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