Gas buffer tank

Abstract

The gas buffer tank comprises a tank body, an elastic diaphragm, a gas inlet pipe, a gas outlet pipe and a pressure relief cylinder, the elastic diaphragm is arranged in an inner cavity of the tank body and divides the tank body into a first cavity and a second cavity, a pressure relief opening is formed in the side wall of the pressure relief cylinder, a pressure relief pipe is arranged at the pressure relief opening in a communicated mode, a gas storage tank is arranged on the pressure relief pipe in a communicated mode, and the gas storage tank is provided with a gas outlet. A plunger is movably arranged at the pressure relief cylinder, a spring, an abutting ring and an adjusting assembly are arranged on the pressure relief cylinder, an air bag is arranged in an inner cavity of the air storage tank, the pressure relief pipe is communicated with the air bag, an air supplementing pipe is arranged on the air bag in a communicated mode, and the air supplementing pipe is communicated with the first cavity. According to the buffer tank, the pressure relief threshold value of the first cavity is adjusted through the adjusting assembly to be matched with the gas during pressure relief stored in the gas storage tank, high-pressure gas at the gas outlet pipe can be effectively reduced, gas supplementing work can be conducted in time when the pressure at the gas outlet pipe is insufficient, and the pressure stabilizing effect of the whole buffer tank on gas conveying is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen preparation, in particular to a gas buffer tank. Background Art

[0002] A surge tank consists of a tank body, inlet and outlet valves, a pressure gauge, and an exhaust valve. The tank body is typically constructed of steel, with valves installed at the inlet and outlet for connecting fluid lines. A surge tank is typically equipped with an air bladder or diaphragm to buffer changes in fluid pressure.

[0003] The primary function of a buffer tank is to mitigate pressure fluctuations in the pipeline, protecting the pipeline and its accessories from damage caused by oscillations and fluctuations. When the fluid in the pipeline generates a transient high pressure due to some reason, such as the rapid opening of a valve, the buffer tank quickly receives the fluid, reducing the speed of the medium's transient changes in the pipeline and maintaining a relatively stable pressure. As the pipeline pressure decreases, the compressed air inside the buffer tank is slowly released, keeping the pipeline pressure relatively stable.

[0004] However, the current buffer tank has a limited buffer pressure range for the internal gas and cannot release pressure after the pressure exceeds the opening range of the airbag or diaphragm. The buffer tank itself has poor protection performance and cannot adjust the pressure relief valve of the airbag or diaphragm according to usage needs, making it inconvenient to use. Utility Model Content

[0005] The purpose of this utility model is to address the deficiencies in the above-mentioned technology and to propose a gas buffer tank to solve the above-mentioned problems.

[0006] The air bag is connected with the air inlet pipe, and the air inlet pipe is connected with the air outlet pipe.

[0007] Preferably, the adjusting assembly includes a screw and an adjusting block, the screw is rotatably mounted on the pressure relief cylinder, the adjusting block is movably mounted on the pressure relief cylinder and the adjusting block cannot rotate relative to the pressure relief cylinder, a screw hole that cooperates with the screw is provided on the adjusting block, the adjusting block abuts against the spring and presses the spring tightly against the plunger.

[0008] Preferably, a first gear is provided on the screw, a second gear is rotatably provided on the pressure relief cylinder, the second gear is engaged with the first gear, a speed ratio of the second gear to the first gear is greater than 1, and a rotating handle is provided on the second gear.

[0009] Preferably, the speed ratio of the second gear to the first gear is 3:1.

[0010] Preferably, the adjusting block is a square block, and the pressure relief cylinder is provided with a square groove for the movable installation of the square block.

[0011] Preferably, the side wall of the pressure relief cylinder aligned with the square groove is made of transparent glass, and the transparent glass is marked with a scale for indicating the size of the spring preload force.

[0012] Preferably, a pressure gauge is provided on the second chamber.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] When the air pressure at the air inlet pipe is high, the elastic diaphragm at the first chamber expands to reduce the gas delivery pressure, that is, to reduce the air pressure at the air outlet pipe. The gas in the first chamber can push the plunger to move through the lower end of the pressure relief cylinder. When the air pressure in the first chamber is greater than the preload force of the spring, the plunger is pushed up, the pressure relief port opens, and the gas is discharged to the air bag of the air storage tank through the pressure relief pipe for pressure relief. When the gas pressure at the air outlet pipe is low, the gas stored in the first chamber cooperates with the elastic action of the elastic diaphragm to supplement the pressure, so that the air pressure at the air outlet pipe can reach the threshold value of its pressure valve and perform air outlet. When the air pressure in the first chamber is lower than the air pressure in the air bag at the air storage tank, the air bag replenishes gas to the first chamber through the air replenishment pipe so that the air pressure in the first chamber is sufficient to supplement the low-pressure gas in the air inlet pipe. That is, the elastic effect of the elastic diaphragm is used to buffer the gas at the intake pipe, and the preload force of the spring at the pressure relief pipe is adjusted by the adjusting component to adjust the pressure relief valve value of the first chamber, which can effectively reduce the gas pressure at the outlet pipe and output it through the outlet pipe. The air bag at the gas storage tank is used to store the gas during pressure relief and replenish it in time through the air replenishment pipe when the air pressure at the first chamber is reduced, which is beneficial for the first chamber to replenish the low-pressure gas at the intake pipe, thereby improving the overall pressure stabilization effect of the buffer tank on gas transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0017] Figure 2 A cross-sectional view of an embodiment of the present invention;

[0018] Figure 3 This is a structural diagram of a pressure relief cylinder in a certain embodiment of the present utility model;

[0019] Figure 4 This is a structural diagram of the adjustment component in a certain embodiment of the present utility model.

[0020] In the figure, 1-tank body; 11-inlet pipe; 12-outlet pipe; 13-elastic diaphragm; 14-first chamber; 15-second chamber; 2-pressure relief cylinder; 21-pressure relief port; 22-pressure relief pipe; 23-plunger; 24-spring; 25-abutment ring; 26-square groove; 3-air storage tank; 4-adjusting assembly; 41-screw; 42-adjusting block; 5-air bag; 51-air supply pipe; 6-first gear; 7-second gear; 71-handle; 8-scale; 9-pressure gauge. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0022] Example 1:

[0023] Reference Figures 1 to 4The utility model provides a gas buffer tank, including a tank body 1, an elastic diaphragm 13, an air inlet pipe 11, an air outlet pipe 12 and a pressure relief cylinder 2. The elastic diaphragm 13 is arranged in the inner cavity of the tank body 1 and divides the tank body 1 into a first chamber 14 and a second chamber 15. The lower end of the pressure relief cylinder 2, the air inlet pipe 11 and the air outlet pipe 12 are all connected to the first chamber 14. A pressure relief port 21 is provided on the side wall of the pressure relief cylinder 2. A pressure relief pipe 22 is provided at the pressure relief port 21. A gas storage tank 3 is provided on the pressure relief pipe 22. The pressure relief cylinder 2 is movable. A plunger 23 is provided, and a spring 24, an adjusting assembly 4 and an abutment ring 25 are provided on the pressure relief cylinder 2. The spring 24 is used to push the plunger 23 to drive the plunger 23 to abut on the abutment ring 25. The adjusting assembly 4 is used to adjust the preload force of the spring 24. An air bag 5 is provided in the inner cavity of the air storage tank 3. The pressure relief pipe 22 is connected to the air bag 5. An air supply pipe 51 is provided on the air bag 5. The air supply pipe 51 is connected to the first chamber 14. A one-way valve is provided on the air supply pipe 51 and the air inlet pipe 11, and a pressure valve is provided at the air outlet pipe 12.

[0024] When the air pressure at the intake pipe 11 is high, the elastic diaphragm 13 at the first chamber 14 expands to reduce the gas delivery pressure, that is, to reduce the air pressure at the outlet pipe 12. The gas in the first chamber 14 can push the plunger 23 to move through the lower end of the pressure relief cylinder 2. When the air pressure in the first chamber 14 is greater than the preload force of the spring 24, the plunger 23 is lifted, the pressure relief port 21 opens, and the gas is discharged to the air bag 5 of the air storage tank 3 through the pressure relief pipe 22 for pressure relief. When the gas pressure at the outlet pipe 12 is low, the gas stored in the first chamber 14 cooperates with the elastic action of the elastic diaphragm 13 to supplement the pressure, so that the air pressure at the outlet pipe 12 can reach the threshold of its pressure valve and perform the gas discharge. When the air pressure in the first chamber 14 is lower than the air pressure in the air bag 5 at the air storage tank 3, the air bag 5 replenishes gas to the first chamber 14 through the air replenishment pipe 51 so that the air pressure in the first chamber 14 is sufficient to supplement the low-pressure gas in the intake pipe 11. That is, the elastic effect of the elastic diaphragm 13 is used to buffer the gas at the intake pipe 11, and the preload force of the spring 24 at the pressure relief pipe 22 is adjusted by the adjustment component 4 to adjust the pressure relief threshold of the first chamber 14. This can effectively reduce the gas pressure at the outlet pipe 12 and output it through the outlet pipe 12. The airbag 5 at the air storage tank 3 is used to store the gas during pressure relief and timely replenish it through the air replenishment pipe 51 when the air pressure in the first chamber 14 decreases. This is beneficial for the first chamber 14 to replenish the low-pressure gas at the intake pipe 11, thereby improving the overall pressure stabilization effect of the buffer tank on gas delivery. Among them, the one-way valve at the air replenishment pipe 51 only allows gas to be transported from the airbag 5 to the first chamber 14, and the one-way valve on the intake pipe 11 only allows gas to be transported through the intake pipe 11 to the first chamber 14 to prevent gas backflow.

[0025] Example 2:

[0026] Reference Figures 1 to 4 Combined with the technical solution of Example 1, in this embodiment, the adjusting assembly 4 includes a screw 41 and an adjusting block 42. The screw 41 is rotatably installed on the pressure relief cylinder 2, and the adjusting block 42 is movably installed on the pressure relief cylinder 2 and the adjusting block 42 cannot rotate relative to the pressure relief cylinder 2. A screw hole that cooperates with the screw 41 is provided on the adjusting block 42. The adjusting block 42 abuts against the spring 24 and presses the spring 24 tightly against the plunger 23.

[0027] By rotating the screw 41 , the screw 41 cooperates with the screw hole on the adjusting block 42 to adjust the position of the adjusting block 42 and thus adjust the preload force of the spring 24 . The pressure relief valve value of the first chamber 14 can be adjusted as needed.

[0028] Specifically, a first gear 6 is provided on the screw 41 , a second gear 7 is rotatably provided on the pressure relief cylinder 2 , the second gear 7 is engaged with the first gear 6 , a speed ratio of the second gear 7 to the first gear 6 is greater than 1, and a rotating handle 71 is provided on the second gear 7 .

[0029] Specifically, the speed ratio of the second gear 7 to the first gear 6 is 3:1.

[0030] Rotating the handle 71 drives the screw 41 via the second gear 7 and the first gear 6 to adjust the preload force of the spring 24. The speed ratio between the second gear 7 and the first gear 6 is 3:1, meaning that the screw 41 rotates once for every 3 rotations of the handle 71. This effectively reduces the force applied to the handle 71, making it easier for operators to rotate the handle 71. In other embodiments, the speed ratio between the second gear 7 and the first gear 6 can be 2:1, 4:1, or other values ​​greater than 1 to reduce the force applied to the handle 71.

[0031] Example 3:

[0032] Reference Figures 1 to 4 Combining the technical solutions of Example 1 and Example 2, in this embodiment, the adjustment block 42 is a square block, and the pressure relief cylinder 2 is provided with a square groove 26 for the movable installation of the square block.

[0033] Specifically, the side wall of the pressure relief cylinder 2 aligned with the square groove 26 is made of transparent glass, and a scale 8 for indicating the preload force of the spring 24 is marked on the transparent glass.

[0034] The position of the adjustment block 42 can be determined by the scale 8 to determine the magnitude of the preload force of the spring 24 , thereby determining the current pressure relief magnitude at the pressure relief pipe 22 .

[0035] Specifically, a pressure gauge 9 is provided on the second chamber 15 .

[0036] A pressure gauge 9 is provided on the second chamber 15 so that the staff can observe the air pressure condition inside the tank body 1 .

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any person skilled in the art can utilize the above technical content to make many possible changes and modifications to the present invention without departing from the scope of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any changes, modifications, equivalent changes, and modifications made to the above embodiments based on the technology of the present invention that do not depart from the content of the present invention are within the scope of protection of the present invention.

Claims

1. A gas buffer tank, characterized in that: and a tube connecting the discharging opening of the gas receptacle and the pump with a check valve in the port of interest. The tube which connects the gas receptacle to the outlet port of the gas receptacle is connected to the outlet port of the gas receptacle by a check valve in the port of interest.

2. A gas buffer tank according to claim 1, characterized in that: The adjusting assembly includes a screw and an adjusting block. The screw is rotatably mounted on the pressure relief cylinder. The adjusting block is movably mounted on the pressure relief cylinder and cannot rotate relative to the pressure relief cylinder. A screw hole that cooperates with the screw is provided on the adjusting block. The adjusting block abuts against the spring and presses the spring tightly against the plunger.

3. A gas buffer tank according to claim 2, characterized in that: A first gear is provided on the screw rod, a second gear is rotatably provided on the pressure relief cylinder, the second gear is engaged with the first gear, a speed ratio of the second gear to the first gear is greater than 1, and a rotating handle is provided on the second gear.

4. A gas buffer tank according to claim 3, characterized in that: The speed ratio of the second gear to the first gear is 3:

1.

5. A gas buffer tank according to claim 2, characterized in that: The regulating block is a square block, and the pressure relief cylinder is provided with a square groove for the movable installation of the square block.

6. A gas buffer tank according to claim 5, characterized in that: The side wall of the pressure relief cylinder aligned with the square groove is made of transparent glass, and the transparent glass is marked with a scale for indicating the size of the spring preload force.

7. A gas buffer tank according to claim 1, characterized in that: The second chamber is provided with a pressure gauge.

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