Integrated valve group for hydrogen-oxygen fuel cell

Abstract

The utility model provides an integrated valve group for a hydrogen-oxygen fuel cell, which comprises a main control valve, a high-pressure pressure sensor, a proportional valve, a safety valve, a low-pressure pressure sensor, a heating rod, a temperature sensor, a shell and a gas circuit, the main control valve, the high-pressure pressure sensor, the safety valve, the low-pressure pressure sensor and the heating rod are fixedly connected with the shell through threads on the components, and sealing rings are arranged at the joints; the proportional valve is fixedly connected with the shell through a long bolt, and a sealing ring is arranged at the joint; the temperature sensor extends into the shell and is fixedly connected with the shell, the gas circuit is arranged in the shell, and the main control valve, the high-pressure pressure sensor, the proportional valve, the safety valve and the low-pressure pressure sensor are respectively communicated with the gas circuit; the integrated valve group is simple in structure, convenient to process and high in reliability, the overall volume of the hydrogen-oxygen fuel cell is reduced, and meanwhile, the communication of gas paths is realized through the shell, so that the safety of the hydrogen-oxygen fuel cell is improved.

Description

Technical Field

[0001] This utility model relates to an integrated valve assembly, and more particularly to an integrated valve assembly for hydrogen-oxygen fuel cells. Background Technology

[0002] Fuel cells boast extremely high energy conversion efficiency, directly converting the chemical energy of fuel into electrical energy through an electrochemical reaction, eliminating the need for intermediate processes such as combustion. This energy conversion rate far surpasses that of traditional heat engine power generation. The main emission from fuel cells is water vapor, resulting in minimal environmental pollution, making it a clean energy conversion method. As a highly efficient and environmentally friendly energy conversion method, fuel cells are of great significance for promoting sustainable development and addressing global energy and environmental challenges.

[0003] There are many different types of fuel cells, among which hydrogen-oxygen fuel cells are the mainstream direction of fuel cell research and application, and are widely used in automobiles, ships, aircraft, and aerospace. In traditional hydrogen-oxygen fuel cells, the main control valve, pressure reducing valve, safety valve, sensor, and heating component are separate devices, which occupy a large space and reduce the safety of the hydrogen-oxygen fuel cell. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an integrated valve assembly for hydrogen-oxygen fuel cells.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] An integrated valve assembly for a hydrogen-oxygen fuel cell includes a main control valve 1, a high-pressure sensor 2, a proportional valve 3, a safety valve 4, a low-pressure sensor 5, a heating rod 6, a temperature sensor 7, a housing 8, and a gas path. The main control valve, high-pressure sensor, safety valve, low-pressure sensor, and heating rod are fixedly connected to the housing via threads on their components, and sealing rings are provided at the connection points for sealing. The proportional valve is fixedly connected to the housing via long bolts, and sealing rings are provided at the connection points for sealing. The temperature sensor extends into the housing and is fixedly connected to the housing. The gas path is located inside the housing, and the main control valve 1, high-pressure sensor 2, proportional valve 3, safety valve 4, and low-pressure sensor 5 are respectively connected to the gas path.

[0007] Preferably, in the above-mentioned integrated valve assembly for hydrogen-oxygen fuel cells, the temperature sensor is fixedly connected to the housing via thermally conductive adhesive.

[0008] Preferably, in the above-mentioned integrated valve group for hydrogen-oxygen fuel cells, the main control valve 1 is a solenoid valve used to control the opening and closing of the overall gas path of the integrated valve group, and is located at the front of the gas path.

[0009] Preferably, in the above-mentioned integrated valve group for hydrogen-oxygen fuel cells, the high-pressure sensor is located after the main control valve and is used to monitor the pressure of the gas entering the integrated valve group.

[0010] Preferably, in the above-mentioned integrated valve assembly for hydrogen-oxygen fuel cells, the proportional valve is a solenoid valve used to reduce the pressure of the gas entering the integrated valve assembly, reducing the gas pressure from 400 kPa to 170 kPa.

[0011] Preferably, in the above-mentioned integrated valve assembly for hydrogen-oxygen fuel cells, the safety valve is a mechanical valve used to ensure the safety of the hydrogen-oxygen fuel cell. It opens to quickly release pressure when the proportional valve fails or the gas pressure is too high.

[0012] Preferably, in the above-mentioned integrated valve assembly for hydrogen-oxygen fuel cells, the low-pressure sensor is located after the safety valve and is used to detect the pressure of the gas in the integrated valve assembly after it has been depressurized by the proportional valve.

[0013] Beneficial effects:

[0014] The integrated valve assembly for hydrogen-oxygen fuel cells features a simple structure, convenient processing, and high reliability. It integrates the main control valve, high-pressure sensor, proportional valve, safety valve, low-pressure sensor, heating rod, and temperature sensor. Using sealing rings to meet the sealing requirements of the fuel cell reduces the space occupied by these components, thus reducing the overall size of the hydrogen-oxygen fuel cell, decreasing production difficulty, and improving production efficiency. This provides a technological foundation for the miniaturization of hydrogen-oxygen fuel cells. Furthermore, the gas path is connected through the casing, eliminating conventional pipeline connections and improving the safety of the hydrogen-oxygen fuel cell. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the integrated valve assembly for hydrogen-oxygen fuel cells described in this utility model.

[0016] Figure 2 This is an assembly diagram of the integrated valve assembly for hydrogen-oxygen fuel cells described in this utility model. Detailed Implementation

[0017] The integrated valve assembly for hydrogen-oxygen fuel cells described in this utility model will be described in detail below with reference to the embodiments and accompanying drawings.

[0018] Example 1

[0019] like Figure 1As shown, the integrated valve assembly for a hydrogen-oxygen fuel cell includes a main control valve 1, a high-pressure sensor 2, a proportional valve 3, a safety valve 4, a low-pressure sensor 5, a heating rod 6, a temperature sensor 7, a housing 8, and a gas path. The main control valve, high-pressure sensor, safety valve, low-pressure sensor, and heating rod are fixedly connected to the housing via threads on their components, with sealing rings 9 at the connection points for sealing. The main control valve 1 is a solenoid valve used to control the opening and closing of the overall gas path of the integrated valve assembly and is located at the front of the gas path. The high-pressure sensor is located after the main control valve and is used to monitor the pressure of the gas entering the integrated valve assembly. The safety valve is a mechanical valve used to ensure the safety of the hydrogen-oxygen fuel cell; it opens rapidly to release pressure when the proportional valve fails or the gas path pressure is too high. The low-pressure sensor is located after the safety valve and is used to detect the pressure of the gas in the integrated valve assembly after being depressurized by the proportional valve. The heating rod is used to heat the entire integrated valve assembly to meet the low-temperature start-up requirements of the fuel cell system. The proportional valve is a solenoid valve used to reduce the pressure of the gas entering the integrated valve assembly from 400 kPa to 170 kPa. The proportional valve is fixedly connected to the housing by long bolts, and a sealing ring is provided at the connection point for sealing. The temperature sensor extends into the housing and is fixedly connected to the housing by thermally conductive adhesive. The temperature sensor is used to provide real-time temperature feedback for the integrated valve assembly. The gas path is located inside the housing, which has a reasonable structural design to provide the gas flow path and the fixed positions for the valves, sensors, and heating rods. The main control valve 1, high-pressure sensor 2, proportional valve 3, safety valve 4, and low-pressure sensor 5 are all connected to the gas path.

[0020] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model. The construction steps of the present utility model are not in any particular order. All improvements and modifications made by those skilled in the art based on the method of the present utility model or on the method of the present utility model are considered to be within the scope of protection of the present utility model.

Claims

1. An integrated valve assembly for a hydrogen-oxygen fuel cell, characterized in that: The device includes a main control valve, a high-pressure sensor, a proportional valve, a safety valve, a low-pressure sensor, a heating rod, a temperature sensor, a housing, and a gas path. The main control valve, high-pressure sensor, safety valve, low-pressure sensor, and heating rod are fixedly connected to the housing via threads on their components, and a sealing ring is provided at the connection. The proportional valve is fixedly connected to the housing via a long bolt, and a sealing ring is provided at the connection. The temperature sensor extends into the housing and is fixedly connected to the housing. The gas path is located inside the housing, and the main control valve, high-pressure sensor, proportional valve, safety valve, and low-pressure sensor are respectively connected to the gas path.

2. The integrated valve assembly for a hydrogen-oxygen fuel cell according to claim 1, characterized in that: The temperature sensor is fixedly connected to the housing using thermally conductive adhesive.

3. The integrated valve assembly for a hydrogen-oxygen fuel cell according to claim 1, characterized in that: The main control valve is a solenoid valve, located at the very beginning of the air path.

4. The integrated valve assembly for a hydrogen-oxygen fuel cell according to claim 1, characterized in that: The high-pressure sensor is located behind the main control valve.

5. The integrated valve assembly for a hydrogen-oxygen fuel cell according to claim 1, characterized in that: The proportional valve is a solenoid valve.

6. The integrated valve assembly for a hydrogen-oxygen fuel cell according to claim 1, characterized in that: The safety valve is a mechanical valve.

7. The integrated valve assembly for a hydrogen-oxygen fuel cell according to claim 1, characterized in that: The low-pressure sensor is located behind the safety valve.

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