Multifunctional BOP test bench

Abstract

The utility model relates to the field of fuel cell auxiliary systems, and specifically relates to a multifunctional BOP test bench comprising an air path test bench used for testing BOP performance of an air path; the hydrogen path test bench is used for testing the BOP performance of the hydrogen path; the performance of the ejector is tested by using the hydrogen input of the hydrogen path test bench; and the cooling system is used for cooling the air path test bench and the hydrogen path test bench. According to the utility model, common test benches of an air path and a hydrogen path in the market are combined together to form a public test bench, and compared with a BOP test bench in the market, the test range is wider. The test cost is saved to a great extent, the space utilization rate is improved, the operation steps are reduced more quickly, and a lot of time and labor costs are saved.

Description

Technical Field

[0001] The utility model relates to the field of fuel cell auxiliary systems, in particular to a multifunctional BOP test bench. Background Art

[0002] In the field of hydrogen, BOP refers to the fuel cell auxiliary system, which is the abbreviation of Balance of Plant. It refers to the non-battery components of the hydrogen fuel cell system, including the air supply system, hydrogen circulation system, water and heat management system, control and monitoring system, etc. The core components include air compressors, circulation pumps, humidifiers, water pumps, hydrogen pumps, etc. They are the basis of the comprehensive functions of the hydrogen fuel cell system and are the key components to ensure the normal operation of the hydrogen fuel cell system.

[0003] Different product systems use different BOP components. There are many BOP test benches on the market that correspond to components of different powers. The applicable product system power range is relatively small and subject to many restrictions. It cannot test the performance of multiple BOPs. In addition, the control method is mostly PLC control, and the program writing is complex and not universal. In addition, the BOP test benches on the market mainly test a single channel, such as only the air channel or the hydrogen channel in the fuel cell system. If both need to be tested, two BOP test benches are required. Each channel requires a cooling system, which greatly increases the waste of time, manpower and materials. Utility Model Content

[0004] The utility model aims to propose a multifunctional BOP test bench in view of the problem that there are many types of BOP test benches in the background technology, but the functions are relatively single and the control methods are relatively complicated.

[0005] The technical solution of the utility model: a multifunctional BOP test bench, comprising:

[0006] Air circuit test bench, used to test the BOP performance of the air circuit;

[0007] Hydrogen circuit test bench, used to test the BOP performance of the hydrogen circuit;

[0008] Ejector test bench, using hydrogen input from the hydrogen circuit test bench to test the performance of the ejector;

[0009] The cooling system is used to provide cooling for the air path test bench and the hydrogen path test bench.

[0010] Preferably, the air path test bench includes an air filter, an air flow meter, an air compressor test piece, a temperature and pressure sensor, an intercooler test piece, a throttle, a switch valve a and a tail exhaust which are sequentially arranged on the air path.

[0011] Preferably, the cooling system includes a cooling system a for providing cooling for the air path test bench and a cooling system b for providing cooling for the hydrogen path test bench.

[0012] Preferably, the hydrogen path test bench includes a switch valve f, a gas preheater, a proportional valve, a gas cooler, a hydrogen flowmeter a, and a hydrogen pump to be tested part which are arranged in sequence on the gas path. The hydrogen returns to the proportional valve after passing through the hydrogen pump to be tested part. When the gas reaches the set temperature, the proportional valve is closed, and an internal circulation of hydrogen is formed between the gas cooler, the hydrogen flowmeter a, and the hydrogen pump to be tested part.

[0013] Preferably, the cooling system a is composed of the air compressor test piece, the cooling flow meter, the intercooler test piece, the switch valve c, the radiator, the water pump and the switch valve b to form a circulating cooling path; the cooling system b is composed of the radiator, the water pump, the switch valve e, the hydrogen pump test piece, the switch valve d and the gas cooler to form a circulating cooling path.

[0014] Preferably, a switch valve i and a tail exhaust are provided on the internal circulation pipeline to adjust the pressure of the internal circulation.

[0015] Preferably, the ejector test bench includes a switch valve f, a gas preheater, an ejector test piece, a hydrogen flowmeter b, a switch valve g and a tail exhaust which are sequentially arranged on the gas path.

[0016] Preferably, a hydrogen circulation structure is arranged between the ejector test piece and the hydrogen flowmeter b, and the hydrogen circulation structure comprises a switch valve h and a hydrogen flowmeter c, and a circulating gas circuit is formed between the switch valve h, the hydrogen flowmeter c and the ejector test piece.

[0017] Compared with the prior art, the utility model has the following beneficial technical effects: the common air path and hydrogen path test benches on the market are combined to form a common test bench, and the system power range that can be tested is 80KW-300KW, which is wider than the test range of the BOP test bench on the market. There are many key components of the fuel cell system that can be tested, and the two paths share a cooling system, which greatly saves the test cost, improves the utilization rate of space, and reduces the number of operation steps, which is faster and saves a lot of time and manpower costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a schematic structural diagram of an embodiment.

[0019] Figure numerals: 1, air filter; 2, air flow meter; 3, air compressor test piece; 4, intercooler test piece; 5, temperature and pressure sensor; 6, throttle; 7, switch valve a; 8, tail exhaust; 9, cooling flow meter; 10, switch valve b; 11, switch valve c; 12, water pump; 13, radiator; 14, switch valve f; 15, gas preheater; 16, proportional valve; 17, gas cooler; 18, hydrogen flow meter a; 19, hydrogen pump test piece; 20, switch valve d; 21, switch valve e; 22, switch valve i; 23, switch valve g; 24, hydrogen flow meter b; 25, switch valve h; 26, hydrogen flow meter c; 27, ejector test piece. DETAILED DESCRIPTION

[0020] Embodiment 1

[0021] like Figure 1 As shown, the utility model proposes a multifunctional BOP test bench, comprising:

[0022] Air circuit test bench, used to test the BOP performance of the air circuit;

[0023] Hydrogen circuit test bench, used to test the BOP performance of the hydrogen circuit;

[0024] Ejector test bench, using hydrogen input from the hydrogen circuit test bench to test the performance of the ejector;

[0025] The cooling system is used to provide cooling for the air path test bench and the hydrogen path test bench. The cooling system includes a cooling system a for providing cooling for the air path test bench and a cooling system b for providing cooling for the hydrogen path test bench.

[0026] In this embodiment, the common air path and hydrogen path test benches on the market are combined to form a common test bench, and the system power range that can be tested is 80KW-300KW, which is wider than the test range of the BOP test bench on the market. There are many key components of the fuel cell system that can be tested, and the two paths share a cooling system, which greatly saves the test cost, improves the utilization of space, and reduces the number of operation steps, which is faster and saves a lot of time and manpower costs.

[0027] Embodiment 2

[0028] like Figure 1 As shown, the utility model proposes a multifunctional BOP test bench. Compared with the first embodiment, the air path test bench includes an air filter 1, an air flow meter 2, an air compressor test piece 3, a temperature and pressure sensor 5, an intercooler test piece 4, a throttle 6, a switch valve a7 and a tail exhaust 8 which are arranged in sequence on the air path.

[0029] The cooling system a is composed of the air compressor test piece 3, the cooling flow meter 9, the intercooler test piece 4, the switch valve c11, the radiator 13, the water pump 12 and the switch valve b10 to form a circulating cooling path.

[0030] In this embodiment, the FCU controls the opening of the throttle valve 6 and the switch valve a7 to adjust the air intake and pressure of the air path. The air is taken in, passes through the air filter 1, the air flow meter 2, the air compressor test piece 3, the temperature and pressure sensor 5 and the intercooler test piece 4, and finally discharged through the tail exhaust 8. At this time, the cooling system a is also working, and the coolant passes through the water pump 12, passes through the air compressor test piece 3, the cooling flow meter 9 and the intercooler test piece 4 in turn through the opening adjustment of the switch valve b10, and finally returns to the radiator 13 through the opening adjustment of the switch valve c11. After the heat dissipation is completed, it returns to the water pump 12 again to start a new cycle.

[0031] Embodiment 3

[0032] like Figure 1 As shown, a multifunctional BOP test bench proposed by the utility model, compared with the first embodiment, the hydrogen path test bench includes a switch valve f14, a gas preheater 15, a proportional valve 16, a gas cooler 17, a hydrogen flow meter a18, and a hydrogen pump to be tested part 19 which are sequentially arranged on the gas path. After the hydrogen passes through the hydrogen pump to be tested part 19 and returns to the proportional valve 16, the proportional valve 16 is closed when the gas reaches the set temperature, and an internal circulation of hydrogen is formed between the gas cooler 17, the hydrogen flow meter a18 and the hydrogen pump to be tested part 19. A switch valve i22 and a tail exhaust 8 are arranged on the internal circulation pipeline to adjust the pressure of the internal circulation.

[0033] The cooling system b is composed of a radiator 13, a water pump 12, a switch valve e21, a hydrogen pump test piece 19, a switch valve d20 and a gas cooler 17 to form a circulating cooling path.

[0034] In this embodiment, it is only necessary to start the hydrogen circuit test bench of the test bench. The FCU controls the opening size of the switch valve f14 and the proportional valve 16 to adjust the intake rate and pressure of the hydrogen circuit. The hydrogen is heated by the gas preheater 15, passes through the gas cooler 17 and the hydrogen flowmeter a18 to reach the hydrogen pump test piece 19, and then returns to the back of the proportional valve 16. When the gas reaches a certain temperature, the proportional valve 16 is closed to form a cycle. When it is necessary to adjust the pressure in the cycle, the FCU controls the switch valve i22 to adjust the pressure in the cycle for tail discharge 8. At this time, the cooling system b is working at the same time, and the FCU controls the closing of the switch valve b10 leading to the air circuit. The coolant passes through the water pump, and is adjusted by the opening of the switch valve e21 and the switch valve d20. It passes through the hydrogen pump test piece 19, the gas cooler 17 and the radiator 13 in turn, and finally returns to the water pump 12 to start a new cycle.

[0035] Embodiment 4

[0036] like Figure 1 As shown, the utility model proposes a multifunctional BOP test bench. Compared with the first embodiment, the second embodiment or the third embodiment, the ejector test bench includes a switch valve f14, a gas preheater 15, an ejector test piece 27, a hydrogen flowmeter b24, a switch valve g23 and a tail exhaust 8 which are sequentially arranged on the gas path.

[0037] Furthermore, a hydrogen circulation structure is arranged between the ejector test piece 27 and the hydrogen flowmeter b24, and the hydrogen circulation structure includes a switch valve h25 and a hydrogen flowmeter c26, and a circulating gas circuit is formed between the switch valve h25, the hydrogen flowmeter c26 and the ejector test piece 27.

[0038] In this embodiment, when the performance of the ejector test piece 27 needs to be tested, the FCU controls the opening of the switch valve g23 to adjust the exhaust volume and the pressure in the channel. The hydrogen reaches the ejector test piece 27 via the gas preheater 15, and then passes through the hydrogen flowmeter b24 for tail discharge. Most of the hydrogen can be recycled. By closing the switch valve g23, the hydrogen coming out of the ejector test piece 27 can be adjusted by the switch valve h25, and then return to the ejector test piece 27 via the hydrogen flowmeter c26 for reuse.

[0039] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A multifunctional BOP test bench, characterized in that: include: Air circuit test bench, used to test the BOP performance of the air circuit; The air path test bench comprises an air filter (1), an air flow meter (2), an air compressor to be tested (3), a temperature and pressure sensor (5), an intercooler to be tested (4), a throttle valve (6), a switch valve a (7) and a tail exhaust (8) which are sequentially arranged on the air path; Hydrogen circuit test bench, used to test the BOP performance of the hydrogen circuit; Ejector test bench, using hydrogen input from the hydrogen circuit test bench to test the performance of the ejector; The cooling system is used to provide cooling for the air path test bench and the hydrogen path test bench.

2. The multifunctional BOP test bench according to claim 1, characterized in that: The cooling system includes a cooling system a for providing cooling for the air path test bench and a cooling system b for providing cooling for the hydrogen path test bench.

3. The multifunctional BOP test bench according to claim 1, characterized in that: The hydrogen circuit test bench comprises a switch valve f (14), a gas preheater (15), a proportional valve (16), a gas cooler (17), a hydrogen flow meter a (18), and a hydrogen pump to be tested (19) which are sequentially arranged on the gas circuit. After the hydrogen passes through the hydrogen pump to be tested (19) and returns to the proportional valve (16), the proportional valve (16) is closed when the gas reaches a set temperature, and an internal circulation of hydrogen is formed between the gas cooler (17), the hydrogen flow meter a (18), and the hydrogen pump to be tested (19).

4. The multifunctional BOP test bench according to claim 3, characterized in that: The cooling system a is composed of an air compressor test piece (3), a cooling flow meter (9), an intercooler test piece (4), a switch valve c (11), a radiator (13), a water pump (12) and a switch valve b (10) to form a circulating cooling path; the cooling system b is composed of a radiator (13), a water pump (12), a switch valve e (21), a hydrogen pump test piece (19), a switch valve d (20) and a gas cooler (17) to form a circulating cooling path.

5. The multifunctional BOP test bench according to claim 4, characterized in that: The internal circulation pipeline is provided with a switch valve i (22) and a tail exhaust (8) to adjust the pressure of the internal circulation.

6. The multifunctional BOP test bench according to claim 4, characterized in that: The ejector test bench comprises a switch valve f (14), a gas preheater (15), an ejector test piece (27), a hydrogen flow meter b (24), a switch valve g (23) and a tail exhaust (8) which are sequentially arranged on a gas path.

7. The multifunctional BOP test bench according to claim 6, characterized in that: A hydrogen circulation structure is provided between the ejector test piece (27) and the hydrogen flow meter b (24), and the hydrogen circulation structure comprises a switch valve h (25) and a hydrogen flow meter c (26). A circulation gas path is formed between the switch valve h (25), the hydrogen flow meter c (26) and the ejector test piece (27).

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