Fuel cell gas-liquid separator testing device

Abstract

The utility model discloses a fuel cell gas-liquid separator testing device which comprises a gas inlet pipeline, a temperature and humidity control mechanism, a water inlet mechanism and a water outlet mechanism, and the temperature and humidity control mechanism comprises a humidifying device, a heating device, a first temperature sensor, a first pressure sensor and a humidity sensor. The humidifying device, the heating device, the first temperature sensor, the first pressure sensor and the humidity sensor are sequentially arranged on the air inlet pipeline. The testing device has the advantages that high-precision control over gas flow and liquid water flow is achieved, real-time response dynamic changes are conducted according to different working conditions, the requirements for parameters such as flow and temperature in the running period of a simulation system are met, the multi-parameter working conditions on a whole vehicle are simulated, working condition simulation can be conducted according to different performance tests, and the testing efficiency is improved. The working condition change of the system is quickly responded, and the high-precision test of the separation efficiency of the gas-liquid separator is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel cell liquid separator technical field, concretely relates to a fuel cell gas liquid separator testing arrangement. BACKGROUND

[0002] The regenerative fuel cell system has the characteristics of high specific energy, low restriction of charge and discharge times and depth, no pollution and zero emission, and has a wide application prospect in orbit spacecraft, moon base and the like. The regenerative fuel cell system stores space solar energy by taking water as an energy storage medium, and releases the stored electric energy when entering a shadow area. The working process involves many gas-liquid medium management and recycling links. Under the space microgravity, the gas-liquid medium cannot be deposited and separated by using the gravitational field and density difference, and in the electrolysis process of the space microgravity regenerative fuel cell system, the problem of high-pressure and high-flow gas-liquid separation under the condition of large-scale variable working pressure must be solved. Therefore, the high-efficiency gas-liquid separation technology under the microgravity condition has become one of the key problems to be solved. At present, there are mainly two technical schemes for the gas-liquid separator in the space microgravity environment, one is a static membrane separator using capillary or surface tension, and the other is a dynamic centrifugal separator using centrifugal force.

[0003] The static membrane separator has small separation capacity, slow separation speed and relatively large volume. The water separation capacity of the static water separator of the electrolytic oxygen generation system of the manned spaceflight renewable life support technology in China is about 4-6 L / h, which is difficult to meet the use requirements of the gas-liquid separation of the electrolysis process of the high-power space regenerative fuel cell system. The membrane gas capture separator is used in the thermal control loop of the international space station, which functions to capture and remove a small amount of gas mixed into the liquid circulation loop when the system components are replaced, and the gas-liquid transmission treatment capacity is small.

[0004] The dynamic centrifugal separator has large separation capacity, fast separation speed and small volume, and is more suitable for the gas-liquid separation of the space regenerative fuel cell system, and the main problem is that energy is consumed. The Apollo lunar vehicle fuel cell main power system adopts a dynamic centrifugal separator to realize the gas-liquid separation of the hydrogen and water mixture after the hydrogen condenser, and the gas-liquid ratio of the outlet fluid of the space regenerative fuel cell system high-pressure electrolyzer is similar, and the water separation capacity is required to be large.

[0005] At present, the test of the gas-liquid separator only stays at the basic stage, the gas flow and the liquid flow entering the gas-liquid separator cannot be controlled with high precision, the liquid water amount at the inlet and outlet of the gas-liquid separator cannot be measured accurately, it is difficult to meet the high-precision test of the separation efficiency of the gas-liquid separator, the hardware factory test and the performance matching test with the system cannot be met, and the size of the gas-liquid separator required by different levels of fuel cell systems cannot be accurately matched. UTILITY MODEL CONTENTS

[0006] The technical problem to be solved by the utility model is how to satisfy the high-precision test of the separation efficiency of the gas-liquid separator.

[0007] To solve the above technical problem, the utility model provides the following technical scheme:

[0008] A fuel cell gas-liquid separator testing device, including air inlet pipeline, temperature and humidity control mechanism, water inlet mechanism and water outlet mechanism, air inlet pipeline is provided with temperature and humidity control mechanism, the output end of temperature and humidity control mechanism and the output end of water inlet mechanism are communicated and then communicated with the air inlet end of gas-liquid separator, the input end of water outlet mechanism is communicated with the water outlet end of gas-liquid separator;

[0009] Temperature and humidity control mechanism includes humidification equipment, heating equipment, first temperature sensor, first pressure sensor and humidity sensor, humidification equipment, heating equipment, first temperature sensor, first pressure sensor and humidity sensor are sequentially arranged on air inlet pipeline.

[0010] The testing device realizes high-precision control of gas flow and liquid water flow and real-time response dynamic change according to different working conditions, satisfies the size of flow, temperature and other parameters during simulation system operation, simulates multiple parameter working conditions on the whole vehicle, can simulate working conditions according to different performance tests, quickly responds to the working condition change of the system, satisfies the high-precision test of the separation efficiency of the gas-liquid separator, reduces the test error and improves the test efficiency.

[0011] Preferably, it further includes a branch pipeline, the input end and the output end of the humidification equipment are communicated respectively at both ends of the branch pipeline, a first valve is further arranged on the air inlet pipeline between the branch pipeline and the input end of the humidification equipment, and a second valve is arranged on the branch pipeline.

[0012] Preferably, the third valve, the second pressure sensor, the filter, the pressure reducing valve, the first flowmeter, the third pressure sensor, the proportional valve and the fourth pressure sensor are sequentially arranged on the air inlet pipeline along the air inlet direction.

[0013] Preferably, the water inlet mechanism includes a water inlet pipeline and an atomizing nozzle, and the water inlet pipeline and the output end are communicated with the atomizing nozzle arranged on the output end of the temperature and humidity control mechanism.

[0014] Preferably, the fourth valve, the metering pump and the second flowmeter are sequentially arranged on the water inlet pipeline along the water inlet direction.

[0015] Preferably, the input end of the water inlet pipeline is communicated with the humidification equipment.

[0016] Preferably, the water outlet mechanism includes a water outlet pipeline, and the input end of the water outlet pipeline is communicated with the water outlet end of the gas-liquid separator.

[0017] Preferably, the fifth valve and the third flowmeter are arranged on the water outlet pipeline.

[0018] Preferably, the tail exhaust mechanism further comprises a tail exhaust collection tank, a liquid level meter and an electric valve, the tail exhaust collection tank is communicated with the output end of the gas-liquid separator, the tail exhaust collection tank is provided with the liquid level meter, and the bottom of the tail exhaust collection tank is provided with the electric valve.

[0019] Preferably, the tail exhaust mechanism further comprises a tail exhaust collection tank, a liquid level meter and an electric valve, the tail exhaust collection tank is communicated with the output end of the gas-liquid separator, the tail exhaust collection tank is provided with the liquid level meter, and the bottom of the tail exhaust collection tank is provided with the electric valve.

[0020] Compared with the prior art, the utility model has the beneficial effects that:

[0021] The test device realizes high-precision control of gas flow and liquid water flow and real-time response dynamic change according to different working conditions, meets the size of flow, temperature and other parameters during the simulation system operation, simulates the multiple-parameter working conditions on the whole vehicle, can simulate the working conditions according to different performance tests, quickly responds to the working condition change of the system, meets the high-precision test of the separation efficiency of the gas-liquid separator, reduces the test error and improves the test efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic view of the utility model embodiment. DETAILED DESCRIPTION

[0023] In order to facilitate the person skilled in the art to understand the technical scheme of the utility model, the technical scheme of the utility model will be further described in conjunction with the drawings of the specification.

[0024] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected, or can be communicated; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication between two elements or the interaction relationship between two elements. For the person skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0025] In the present application, unless otherwise explicitly specified and limited, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0026] Reference Figure 1The embodiment discloses a fuel cell gas-liquid separator testing device, which comprises an air inlet pipeline 1, a temperature and humidity control mechanism 2, a water inlet mechanism 3, a water outlet mechanism 4 and a tail exhaust mechanism 5. The temperature and humidity control mechanism 2 is arranged on the air inlet pipeline 1. The output end of the temperature and humidity control mechanism 2 is communicated with the output end of the water inlet mechanism 3, and then communicated with the air inlet end of a gas-liquid separator 6. The input end of the water outlet mechanism 4 is communicated with the water outlet end of the gas-liquid separator 6. The input end of the tail exhaust mechanism 5 is communicated with the output end of the gas-liquid separator 6.

[0027] The air inlet pipeline 1 is sequentially provided with a third valve 7, a second pressure sensor 8, a filter 9, a pressure reducing valve 10, a first flow meter 11, a third pressure sensor 12, a proportional valve 13 and a fourth pressure sensor 14 along the air inlet direction. The gas flow entering the gas-liquid separator 6 is controlled through the above structure, and the flow of the medium under different working conditions in the actual operation of the gas-liquid separator is simulated.

[0028] The temperature and humidity control mechanism 2 comprises a humidifying device 21, a heating device 22, a first temperature sensor 23, a first pressure sensor 24 and a humidity sensor 25. The humidifying device 21, the heating device 22, the first temperature sensor 23, the first pressure sensor 24 and the humidity sensor 25 are sequentially arranged on the air inlet pipeline 1, and are used for simulating the temperature and humidity conditions inside the fuel cell and meeting the temperature and humidity control of the gas under different working conditions.

[0029] The temperature and humidity control mechanism 2 further comprises a branch pipeline 26, the two ends of the branch pipeline 26 are respectively communicated with the input end and the output end of the humidifying device 21. A first valve 27 is further arranged on the air inlet pipeline 1 between the branch pipeline 26 and the input end of the humidifying device 21. A second valve 28 is arranged on the branch pipeline 26. When the gas needs to be humidified, the second valve 28 is closed and the first valve 27 is opened. When the gas does not need to be humidified, the first valve 27 is closed and the second valve 28 is opened. The gas flows into the heating device 22 for heating from the branch pipeline 26.

[0030] The water inlet mechanism 3 comprises a water inlet pipeline 31, an atomizing nozzle 32, a fourth valve 33, a metering pump 34 and a second flow meter 35. The water inlet pipeline 31 is communicated with the output end and the atomizing nozzle 32 arranged on the output end of the temperature and humidity control mechanism 2. The water inlet pipeline 31 is sequentially provided with the fourth valve 33, the metering pump 34 and the second flow meter 35 along the water inlet direction, and is used for controlling the liquid water flow required by the gas-liquid separator 6 under different working conditions of the input end. Further, the liquid water sprayed by the atomizing nozzle 32 is sprayed in the same direction as the gas flow direction, so that the liquid water and the gas at the inlet of the gas-liquid separator 6 can be fully mixed and enter the gas-liquid separator 6.

[0031] Further, the input end of the water inlet pipeline 31 is communicated with the humidifying device 21, and the humidifying device 21 provides water for the gas-liquid separator 6.

[0032] The water outlet mechanism 4 comprises a water outlet pipeline 41, a fifth valve 42 and a third flow meter 43, the input end of the water outlet pipeline 41 is communicated with the water outlet end of the gas-liquid separator 6, the fifth valve 42 and the third flow meter 43 are arranged on the water outlet pipeline 41, and the third flow meter 43 is used for monitoring the liquid water amount of the water outlet end of the gas-liquid separator 6 under different working conditions.

[0033] The tail discharge mechanism 5 comprises a tail discharge collection tank 51, a liquid level meter 52 and an electric valve 53, the input end of the tail discharge collection tank 51 is communicated with the output end of the gas-liquid separator 6, the liquid level meter 52 is arranged on the tail discharge collection tank 51, and the electric valve 53 is arranged at the bottom output end of the tail discharge collection tank 51.

[0034] In the embodiment, the gas inlet pipeline 1 provides gas for the gas-liquid separator 6 and controls the flow of the gas inlet of the gas-liquid separator 6, the humidity and temperature control mechanism 2 is used for simulating the humidity and temperature working conditions inside the fuel cell, so as to meet the temperature and humidity control of the gas under different working conditions, the water inlet mechanism 3 is used for controlling the liquid water flow amount required by the gas-liquid separator 6 under different working conditions, and the water outlet mechanism 4 is used for monitoring the liquid water amount of the outlet of the gas-liquid separator under different working conditions.

[0035] In conclusion, the test device realizes high-precision control of the gas flow and the liquid water flow and real-time response to dynamic changes according to different working conditions, meets the size of the flow, temperature and other parameters during the simulation system operation, simulates the multiple parameter working conditions on the whole vehicle, can simulate the working conditions according to different performance tests, quickly responds to the working condition changes of the system, meets the high-precision test of the separation efficiency of the gas-liquid separator, reduces the test error and improves the test efficiency.

[0036] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the present application, and any figure reference in the claims should not be regarded as limiting the claims.

[0037] The above-described embodiments only represent the implementation of the present application, and the protection scope of the present application is not limited to the above-described embodiments. For those skilled in the art, on the premise of not departing from the concept of the present application, a number of modifications and improvements can be made, and these all belong to the protection scope of the present application.

Claims

1. A fuel cell gas-liquid separator test apparatus characterized by: The air inlet pipeline is provided with the temperature and humidity control mechanism, and the output end of the temperature and humidity control mechanism is communicated with the output end of the water inlet mechanism and then communicated with the air inlet end of the gas-liquid separator. The temperature and humidity control mechanism comprises a humidifying device, a heating device, a first temperature sensor, a first pressure sensor and a humidity sensor, which are sequentially arranged on the air inlet pipeline.

2. A fuel cell gas-liquid separator test device according to claim 1, wherein: The branch pipeline is further provided with a first valve between the branch pipeline and the input end of the humidifying device.

3. A fuel cell gas-liquid separator test device according to claim 1, wherein: The air inlet pipeline is provided with a third valve, a second pressure sensor, a filter, a pressure reducing valve, a first flow meter, a third pressure sensor, a proportional valve and a fourth pressure sensor in sequence along the air inlet direction.

4. A fuel cell gas-liquid separator test device according to claim 1, wherein: The water inlet mechanism comprises a water inlet pipeline and an atomizing nozzle, and the water inlet pipeline is communicated with the output end and the atomizing nozzle arranged on the output end of the temperature and humidity control mechanism.

5. A fuel cell gas-liquid separator test device according to claim 4, wherein: The water inlet pipeline is provided with a fourth valve, a metering pump and a second flow meter in sequence along the water inlet direction.

6. A fuel cell gas-liquid separator test device according to claim 4, wherein: The input end of the water inlet pipeline is communicated with the humidifying device.

7. A fuel cell gas-liquid separator test device according to claim 1, wherein: The water outlet mechanism comprises a water outlet pipeline, and the input end of the water outlet pipeline is communicated with the water outlet end of the gas-liquid separator.

8. A fuel cell gas-liquid separator test device according to claim 7, wherein: The water outlet pipeline is provided with a fifth valve and a third flow meter.

9. A fuel cell gas-liquid separator test device according to claim 1, wherein: The tail exhaust mechanism is further provided with a tail exhaust collection tank, a liquid level meter and an electric valve.

10. A fuel cell gas-liquid separator test device according to claim 9, wherein: The tail exhaust collection tank is provided with the liquid level meter, and the bottom output end of the tail exhaust collection tank is provided with the electric valve.

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