Multi-part test system for fuel cell

Abstract

The utility model relates to the technical field of fuel cells, and discloses a multi-part test system for a fuel cell, which is suitable for tested part groups and comprises a gas source, the gas source is connected with a plurality of gas paths, different tested part groups are respectively arranged on the plurality of gas paths, the plurality of gas paths are arranged in parallel, the gas paths are provided with valve groups, the valve groups are used for adjusting gas flow in the gas paths, and the valve groups are connected with the gas source. The gas circuit is provided with a switch, the valve group comprises a pressure reducing valve which is arranged on one side of the switch, and two pressure sensors are arranged on the gas circuit. According to the multi-part testing system for the fuel cell, a plurality of parts of the same type form a tested part group, the tested part group is divided into different tested part groups according to the types of the parts, the different tested part groups are respectively arranged on different gas paths, and the gas flow in each gas path is respectively adjusted through a valve group for testing the tested part groups. Therefore, simultaneous testing of multiple types of parts can be realized, and the detection efficiency of the parts can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, in particular to a multi-part testing system for fuel cells. Background Art

[0002] A hydrogen fuel engine is an engine that uses hydrogen as an internal combustion engine fuel. Hydrogen does not contain carbon, does not produce CO2 after combustion, and can be obtained through renewable energy sources such as solar energy and wind energy. When hydrogen is used as an internal combustion engine fuel, it is very easy to achieve lean combustion, emits less pollutants, and has high thermal efficiency. It is considered to be an ideal energy source or energy carrier.

[0003] It is very important for hydrogen fuel cell engines to conduct air tightness and high and low pressure cycle durability tests on key components such as intercoolers. The current testing method is generally to test a single type of parts or to test the entire engine. For a large number of parts of various types, due to the large difference in their cavity volumes, it is difficult to balance the flow resistance, exhaust time and pressure distribution, making it impossible to test a large number of parts of various types at the same time. Testing a single type of parts will result in low detection efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-part testing system for a fuel cell to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-part testing system for a fuel cell, suitable for a group of parts to be tested, comprising: a gas source, the gas source is connected to a plurality of gas circuits, different groups of parts to be tested are respectively arranged in a plurality of the gas circuits, the plurality of the gas circuits are arranged in parallel, the gas circuits are provided with valve groups, and the valve groups are used to adjust the airflow in the gas circuits.

[0006] Preferably, the gas circuit is provided with a switch.

[0007] Preferably, the valve group includes a pressure reducing valve, and the pressure reducing valve is arranged on one side of the switch.

[0008] Preferably, two pressure sensors are arranged on the gas path.

[0009] Preferably, the two pressure sensors are respectively arranged on both sides of the measured parts group.

[0010] Preferably, one end of the gas circuit is connected to a plurality of branches.

[0011] Preferably, the several branches on each gas path are arranged in parallel.

[0012] Preferably, the valve group comprises an exhaust valve group, and the exhaust valve group is formed by connecting a plurality of exhaust valves in parallel.

[0013] Preferably, the exhaust valve is arranged on the branch line.

[0014] The multi-parts test system for fuel cells has the following beneficial effects:

[0015] The fuel cell multi-parts test system combines multiple parts of the same type into a tested parts group, which is divided into different tested parts groups according to the types of parts. Different tested parts groups are respectively arranged in different gas paths, and the airflow in each gas path is adjusted by a valve group to test the tested parts group, so as to realize simultaneous testing of multiple quantities and types of parts, thereby improving the detection efficiency of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a multi-part testing system for a fuel cell provided in an embodiment of the present application.

[0017] In the figure: 1. gas source; 2. gas path; 3. switch; 4. pressure reducing valve; 5. first pressure sensor; 6. second pressure sensor; 7. exhaust valve group; 8. measured parts group. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1 As shown, the utility model provides a multi-part testing system for a fuel cell, which is suitable for a part group 8 to be tested. Since the volumes of the cavities of the parts to be tested are different, a plurality of parts of the same type (with the same or similar cavities) are combined into a part group 8 to be tested, and the parts are divided into different part groups 8 to be tested according to their types. The testing system comprises: an air source 1, the air source 1 is connected to a plurality of air circuits 2, different part groups 8 to be tested are respectively arranged in a plurality of air circuits 2, the number of air circuits 2 is adjusted according to the number of part groups 8 to be tested, and the plurality of air circuits 2 are arranged in parallel.

[0020] The gas circuit 2 is provided with a valve group, and the valve group is used to adjust the airflow in the gas circuit 2.

[0021] Specifically, the gas circuit 2 is provided with a switch 3 for controlling the connection and closing of each gas circuit 2 with the gas source 1. The valve group includes a pressure reducing valve 4. The gas pressure in the gas circuit 2 can be adjusted by the pressure reducing valve 4 to balance the pressure distribution of each gas circuit 2, thereby improving the pressure consistency of each gas circuit 2. The pressure reducing valve 4 is arranged on one side of the switch 3. Two pressure sensors are arranged on the gas circuit 2, namely a first pressure sensor 5 and a second pressure sensor 6. The first pressure sensor 5 and the second pressure sensor 6 are respectively arranged on both sides of the measured part group 8, so as to monitor the front and rear end pressures of the measured part group 8.

[0022] Furthermore, one end of the gas circuit 2 is connected to several branches, and several branches on each gas circuit 2 are arranged in parallel. The valve group also includes an exhaust valve group 7, and the exhaust valve group 7 is formed by several exhaust valves in parallel. The exhaust valve is arranged on the branch, and the air pressure of the gas circuit 2 is adjusted by the exhaust valve to realize the control of the high and low pressure cycle. Since the cavities of different measured part groups 8 are different, multiple exhaust valves can be connected in parallel in the gas circuit 2 with a larger cavity, so that the exhaust time is closer to the gas circuit 2 with a smaller cavity, thereby maintaining the consistency of the high and low pressure cycle frequency (i.e., period) of each gas circuit 2.

[0023] In this embodiment, different groups of tested parts 8 are respectively arranged on different air paths 2, and the airflow in each air path 2 is adjusted respectively by the pressure reducing valve 4 and the exhaust valve in the exhaust valve group 7, so as to test the group of tested parts 8, so as to realize the simultaneous testing of a large number and a variety of parts, thereby improving the detection efficiency of parts. At the same time, the problems of excessive flow resistance, excessive front-to-back pressure difference and long exhaust time caused by different types of parts (i.e., the cavities of some parts are larger and the cavities of other parts are smaller) are solved.

[0024] In the present application, the air tightness test and the high and low pressure cycle durability test can be performed on the tested parts group 8 through the regulating valve group, thereby realizing multifunctional integration.

[0025] Working principle: Different groups of tested parts 8 are respectively set on different gas circuits 2, and the air flow in each gas circuit 2 is adjusted by the pressure reducing valve 4 and the exhaust valve in the exhaust valve group 7 to test the group of tested parts 8, so as to realize simultaneous testing of multiple quantities and types of parts.

[0026] In summary, although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-component test system for a fuel cell, suitable for a group of components to be tested, characterized in that: include: An air source, the air source is connected to a plurality of air paths, and different groups of tested parts are respectively arranged in the plurality of air paths; Several of the gas circuits are arranged in parallel; The gas circuit is provided with a valve group, and the valve group is used to adjust the airflow in the gas circuit.

2. The test system according to claim 1, characterized in that: The gas circuit is provided with a switch.

3. The test system according to claim 2, characterized in that: The valve group includes a pressure reducing valve, and the pressure reducing valve is arranged on one side of the switch.

4. The test system according to claim 1, characterized in that: Two pressure sensors are arranged on the gas path.

5. The test system according to claim 4, characterized in that: The two pressure sensors are respectively arranged on two sides of the measured parts group.

6. The test system according to claim 1, characterized in that: One end of the gas circuit is connected to a plurality of branches.

7. The test system according to claim 6, characterized in that: The plurality of branches on each gas path are arranged in parallel.

8. The test system according to claim 7, characterized in that: The valve group includes an exhaust valve group, and the exhaust valve group is formed by connecting a plurality of exhaust valves in parallel.

9. The test system according to claim 8, characterized in that: The exhaust valve is arranged on the branch line.

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