Hydrogen pressure stabilizing regulator

Abstract

The utility model discloses a hydrogen pressure stabilizing adjusting device, including main pipeline, main pipeline is connected between hydrogen pressure machine export and hydrogen unit air inlet, and is installed with automatic regulating valve on main pipeline, and is installed with one way parallel shunt pipeline on the side of main pipeline, and is installed with the air supplement valve, pressure stabilizing tank and exhaust valve that set gradually on shunt pipeline, the pressure stabilizing tank includes the inner bag, and the outer portion of inner bag is wound with glass fibre layer, and the bottom of inner bag is equipped with the air supplement joint of integrative injection molding with it, and the top of inner bag is equipped with the exhaust joint of integrative injection molding with it, and air supplement joint and exhaust joint all are linked with inner bag inner chamber. The utility model provides a hydrogen pressure stabilizing adjusting device can avoid hydrogen pressure machine export pressure fluctuation too big, makes the pressure in electrolytic cell always keep stable, is favorable to safety production.

Description

Technical Field

[0001] This utility model relates to a hydrogen pressure stabilization and regulation device, belonging to the technical field of chlor-alkali industry. Background Technology

[0002] The electrolyzer is connected to the inlet of the hydrogen compressor via pipeline, and the outlet of the hydrogen compressor is connected to the hydrogen-consuming unit via pipeline. The outlet pressure of the hydrogen compressor fluctuates frequently due to the influence of the hydrogen-consuming unit, which is transmitted back to the inlet of the hydrogen compressor, thus causing pressure instability within the electrolyzer. Since the electrolyzer requires extremely high pressure precision, pressure fluctuations directly affect electrolysis efficiency, such as reducing hydrogen production, and may even damage core components of the electrolyzer, such as electrodes and membrane modules, threatening safe production.

[0003] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0004] This invention addresses the shortcomings of the prior art by providing a hydrogen pressure stabilization and regulation device, which can prevent excessive fluctuations in the outlet pressure of the hydrogen compressor and keep the pressure inside the electrolyzer stable, thus promoting safe production.

[0005] To solve the above technical problems, the present invention adopts the following technical solution: A hydrogen pressure stabilizing and regulating device includes a main pipeline connected between the outlet of a hydrogen compressor and the inlet of a hydrogen-using unit. An automatic regulating valve is installed on the main pipeline. A parallel bypass pipeline is installed alongside the main pipeline, and a gas supply valve, a pressure stabilizing tank, and an exhaust valve are installed sequentially on the bypass pipeline. The pressure stabilizing tank includes an inner liner, the outside of which is wrapped with a fiberglass layer. The bottom of the inner liner is provided with a gas supply connector integrally injection-molded therewith, and the top of the inner liner is provided with an exhaust connector integrally injection-molded therewith. Both the gas supply connector and the exhaust connector are connected to the inner cavity of the inner liner.

[0006] Furthermore, the inlet of the hydrogen compressor is connected to the electrolyzer via a hydrogen inlet pipe.

[0007] Furthermore, the axis of the inner liner is set in the vertical direction, and the inner liner is formed by hot-melting and splicing two shell parts that are symmetrically arranged at the top and bottom.

[0008] Furthermore, the bottom and top of the inner cavity of the inner liner are provided with reinforcing ribs.

[0009] Furthermore, both the air supply connector and the exhaust connector are L-shaped structures.

[0010] Furthermore, the air supply connector is connected to the air supply valve via a flange, and the exhaust connector is connected to the exhaust valve via a flange.

[0011] Furthermore, the connection points between the air supply connector and the exhaust connector and the inner liner are each provided with at least two annular grooves.

[0012] Furthermore, the bottom of the pressure stabilizing tank is provided with multiple support legs.

[0013] Furthermore, the inner liner is made of polymer plastic.

[0014] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: This invention utilizes a parallel design of the main pipeline and the bypass pipeline. The automatic regulating valve in the main pipeline can automatically adjust its opening to maintain stable base pressure. The gas replenishment valve, pressure stabilizing tank, and exhaust valve in the bypass pipeline serve as a pressure buffer and replenishment system. When the automatic regulating valve cannot cope with short-term large fluctuations, such as a sudden surge or drop in hydrogen consumption, it can quickly intervene through gas replenishment or exhaust, forming a dual stabilization mechanism of main regulation and auxiliary buffer. This avoids excessive fluctuations in the outlet pressure of the hydrogen compressor, ensuring that the pressure in the electrolyzer remains stable, which is beneficial for safe production.

[0015] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the pressure stabilizing tank; Figure 3 yes Figure 2 A magnified view of point P in the middle.

[0017] In the diagram, 1-hydrogen compressor, 2-hydrogen unit, 3-hydrogen inlet pipe, 4-main pipeline, 5-automatic regulating valve, 6-bypass pipeline, 7-pressure stabilizer, 71-inner liner, 72-glass fiber layer, 73-gas inlet connector, 74-gas outlet connector, 75-support leg, 76-reinforcing rib, 77-ring groove, 8-gas inlet valve, 9-gas outlet valve. Detailed Implementation

[0018] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0019] like Figures 1-3 As shown in the figure, this utility model provides a hydrogen pressure stabilization and regulation device, including a main pipeline 4, which is connected between the outlet of the hydrogen compressor 1 and the inlet of the hydrogen-using unit 2. An automatic regulating valve 5 is installed on the main pipeline 4, and a parallel bypass pipeline 6 is installed next to the main pipeline 4. A gas replenishment valve 8, a pressure stabilizing tank 7, and an exhaust valve 9 are installed on the bypass pipeline 6 in sequence.

[0020] The inlet of the hydrogen compressor 1 is connected to the electrolyzer via a hydrogen inlet pipe 3.

[0021] The pressure stabilizing tank 7 includes an inner liner 71, which is made of high-molecular plastic material and has a glass fiber layer 72 wrapped around its exterior.

[0022] The inner liner 71 has its axis set vertically, and the inner liner 71 is formed by hot-melting two shell parts that are symmetrically arranged at the top and bottom.

[0023] The inner liner 71 is provided with reinforcing ribs 76 at both the bottom and top of the inner cavity. The reinforcing ribs 76 are used to improve the pressure resistance of the inner liner 71.

[0024] The bottom of the inner liner 71 is provided with an air inlet connector 73 integrally injection molded therewith, and the top of the inner liner 71 is provided with an exhaust connector 74 integrally injection molded therewith. Both the air inlet connector 73 and the exhaust connector 74 are connected to the inner cavity of the inner liner 71.

[0025] The air supply connector 73 and the exhaust connector 74 are placed in the molding mold of the molten plastic in the inner liner 71 in advance. During the molding process, the molten plastic wraps the air supply connector 73 and the exhaust connector 74, and they are firmly connected after molding.

[0026] Both the air supply connector 73 and the exhaust connector 74 are L-shaped structures.

[0027] The air supply connector 73 is connected to the air supply valve 8 via a flange, and the exhaust connector 74 is connected to the exhaust valve 9 via a flange.

[0028] At least two annular grooves 77 are provided at the connection points of the air supply connector 73 and the exhaust connector 74 with the inner liner 71. The annular grooves 77 are used to fill polymer plastic to improve the connection strength between the air supply connector 73 and the exhaust connector 74 and the inner liner 71.

[0029] The bottom of the pressure stabilizing tank 7 is provided with multiple support legs 75.

[0030] The specific working principle of this utility model is as follows: This utility model provides a main pipeline 4 and a bypass pipeline 6 connected in parallel between the outlet of the hydrogen compressor 1 and the inlet of the hydrogen-using unit 2. An automatic regulating valve 5 is installed on the main pipeline 4, and a make-up gas valve 8, a pressure stabilizing tank 7, and an exhaust valve 9 are installed sequentially on the bypass pipeline 6.

[0031] When the hydrogen output of hydrogen compressor 1 exceeds the hydrogen consumption of hydrogen-using unit 2, hydrogen can be stored in pressure stabilizing tank 7 through gas supply valve 8; when the hydrogen output of hydrogen compressor 1 is less than the hydrogen consumption of hydrogen-using unit 2, hydrogen can be supplied through exhaust valve 9. This avoids excessive fluctuations in the outlet pressure of hydrogen compressor 1, ensuring that the pressure inside the electrolyzer remains stable, which is beneficial for safe production.

[0032] The pressure stabilizing tank of this invention is made of a composite of an inner liner of high-molecular plastic and an outer glass fiber layer, which has the advantages of being lightweight and having high pressure resistance.

[0033] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A hydrogen pressure stabilizing and regulating device, characterized in that: It includes a main pipeline (4), which is connected between the outlet of the hydrogen compressor (1) and the inlet of the hydrogen-using unit (2). An automatic regulating valve (5) is installed on the main pipeline (4). A parallel bypass pipeline (6) is installed next to the main pipeline (4). A gas replenishment valve (8), a pressure stabilizing tank (7), and an exhaust valve (9) are installed on the bypass pipeline (6) in sequence. The pressure stabilizing tank (7) includes an inner liner (71), which is wrapped with a glass fiber layer (72). The bottom of the inner liner (71) is provided with a gas replenishment connector (73) integrally injection molded with it. The top of the inner liner (71) is provided with an exhaust connector (74 integrally injection molded with it. The gas replenishment connector (73) and the exhaust connector (74) are both connected to the inner cavity of the inner liner (71).

2. The hydrogen pressure stabilizing and regulating device as described in claim 1, characterized in that: The inlet of the hydrogen compressor (1) is connected to the electrolyzer via a hydrogen inlet pipe (3).

3. The hydrogen pressure stabilizing and regulating device as described in claim 1, characterized in that: The axis of the inner liner (71) is set in the vertical direction, and the inner liner (71) is formed by hot-melting two shell parts that are symmetrically arranged at the top and bottom.

4. The hydrogen pressure stabilizing and regulating device as described in claim 1, characterized in that: The inner liner (71) is provided with reinforcing ribs (76) at the bottom and top of the inner cavity.

5. The hydrogen pressure stabilizing and regulating device as described in claim 1, characterized in that: Both the air supply connector (73) and the exhaust connector (74) are L-shaped structures.

6. The hydrogen pressure stabilizing and regulating device as described in claim 1, characterized in that: The air supply connector (73) is connected to the air supply valve (8) via a flange, and the exhaust connector (74) is connected to the exhaust valve (9) via a flange.

7. The hydrogen pressure stabilizing and regulating device as described in claim 1, characterized in that: At least two annular grooves (77) are provided at the connection points of the air supply connector (73) and the exhaust connector (74) with the inner liner (71).

8. The hydrogen pressure stabilizing and regulating device as described in claim 1, characterized in that: The bottom of the pressure stabilizing tank (7) is provided with multiple support legs (75).

9. The hydrogen pressure stabilizing and regulating device as described in claim 1, characterized in that: The inner liner (71) is made of polymer plastic.

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