CN209927167U - Fuel cell ejector test system - Google Patents
Fuel cell ejector test system Download PDFInfo
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- CN209927167U CN209927167U CN201920942989.6U CN201920942989U CN209927167U CN 209927167 U CN209927167 U CN 209927167U CN 201920942989 U CN201920942989 U CN 201920942989U CN 209927167 U CN209927167 U CN 209927167U
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Abstract
The utility model provides a fuel cell ejector test system, which is used for testing the ejector capacity of an ejector, and the ejector to be tested is provided with an ejector jet port, an ejector drainage port and an ejector outlet; the test system includes: the gas supply module, the pressure control module, the temperature and humidity control module and the sensor module for detecting pressure, temperature and humidity are sequentially connected with the ejector jet port, the inlet of the temperature and humidity control module is connected with the ejector outlet, the outlet of the temperature and humidity control module is connected with the ejector drainage port, an exhaust valve and a pressure regulating valve are further arranged between the outlet of the temperature and humidity control module and the ejector drainage port, and flow meters are respectively arranged at the downstream of the gas supply module and the upstream of the ejector drainage port. The utility model discloses can test the fuel cell ejector test system of the ejector's of ejector under each operating mode.
Description
Technical Field
The utility model belongs to the technical field of fuel cell spare part test and specifically relates to a fuel cell ejector test system is related to.
Background
At present, with the rise of new energy, fuel cells are more and more emphasized, wherein proton exchange membrane fuel cells are widely applied in the fields of automobiles, aviation and the like. The fuel of the proton exchange membrane fuel cell is hydrogen, and in order to improve the utilization rate of the hydrogen, the hydrogen behind the electric pile needs to be introduced into the front end of the electric pile. The ejector converts high-pressure hydrogen at the front end of the galvanic pile into high-speed hydrogen, and then ejects low-speed low-pressure hydrogen at the rear end of the galvanic pile to the inlet of the galvanic pile to finally form hydrogen circulation.
In order to develop an ejector better, an ejector capacity test system of the ejector needs to be established. The performance of the ejector in an actual fuel cell system cannot be tested only by adopting dry gas for testing. The injection capacity of the ejector is mainly an injection rate and an injection pressure difference, wherein the injection rate is defined as the ratio of injection flow and jet flow, and the injection pressure difference is defined as the pressure difference between an ejector outlet and an ejector drainage port.
SUMMERY OF THE UTILITY MODEL
In view of the above, the technical problem to be solved of the utility model is to provide a fuel cell ejector test system that can test the ejector's of ejector under each operating mode ability of drawing.
Therefore, the fuel cell ejector testing system is used for testing the ejector capacity of the ejector, and the ejector to be tested is provided with an ejector jet port, an ejector drainage port and an ejector outlet;
the test system includes:
a gas supply module, a pressure control module, a temperature and humidity control module and a sensor module for detecting pressure, temperature and humidity,
the gas supply module and the pressure control module are sequentially connected with the ejector jet port, the inlet of the temperature and humidity control module is connected with the ejector outlet, the outlet of the temperature and humidity control module is connected with the ejector drainage port, an exhaust valve and a pressure regulating valve are further arranged between the outlet of the temperature and humidity control module and the ejector drainage port, and flow meters are respectively arranged at the downstream of the gas supply module and the upstream of the ejector drainage port.
According to the utility model discloses a fuel cell ejector test system has really reduced fuel cell system's actual structure to can control gaseous flow, pressure, temperature, humidity etc. condition respectively, can simulate the ejector's of ejector under each operating mode ability of penetrating. Meanwhile, the test system is simple in structure, low in cost and easy to build.
Also, the utility model discloses in, the sensor module is including setting up the first sensor unit in the upper reaches of ejector jet orifice, setting are in the second sensor unit in the upper reaches of ejector drainage mouth sets up the third sensor unit in the low reaches of ejector export, and sets up the fourth sensor unit in the low reaches of atmospheric control module.
According to the utility model discloses, flow, pressure, temperature, humidity in measurement ejector drainage mouth, efflux mouth and exit that can be accurate can also assist the atmospheric control module to control temperature and humidity simultaneously.
Also, the utility model discloses in, the temperature and humidity control module is including wet film humidifier, governing valve, temperature controller, water pump and the water flowmeter who establishes ties in proper order.
According to the utility model discloses, can control the gas humidity, the temperature of ejector export through above-mentioned part.
Also, in the present invention, a first temperature sensor and a first pressure sensor are installed at the upstream and downstream of the wet film humidifier.
According to the utility model discloses, can monitor the temperature and the pressure that enter into in the wet film humidifier, supplementary control temperature and water pressure.
Also, in the present invention, the water temperature controller includes a water heater and a radiator.
According to the utility model discloses, can heat or the thermal treatment, accurate control temperature to water.
Also, the utility model discloses in, gaseous module for supplying with can provide the high pressurized air source of certain pressure.
According to the utility model discloses, high pressurized air source cooperation pressure control module can accurate control gas pressure.
Also, in the present invention, the pressure control module is a proportional valve or a gas injector.
According to the utility model discloses, adopt above-mentioned part can carry out accurate control to pressure.
Also, in the present invention, the exhaust valve is an electromagnetic valve or a pneumatic valve.
According to the utility model discloses, can carry out on-off control to above-mentioned two valve bodies through the controller.
Also, in the present invention, the pressure regulating valve may be a proportional valve or a hand valve.
According to the utility model discloses, can control valve body's aperture very much to flow resistance is controlled in the gas pipeline.
Also, the present invention provides that each sensor unit includes a second pressure sensor, a second temperature sensor and a second humidity sensor.
According to the utility model discloses, can provide the control for gas humidity, pressure, temperature.
Drawings
Fig. 1 illustrates a fuel cell injector test system according to an embodiment of the present invention;
reference numerals:
1. a gas supply module for supplying a gas to the reaction chamber,
2. a pressure control module for controlling the pressure of the gas,
3. an ejector to be tested is arranged on the base,
31. the jet orifice of the ejector is provided with a jet hole,
32, a flow guide port of the ejector,
33. an outlet of the ejector is connected with the air inlet of the ejector,
4. a temperature and humidity control module for controlling the temperature and humidity of the air conditioner,
41. a wet film humidifier is arranged on the inner wall of the wet film humidifier,
42. the adjusting valve is arranged on the base plate,
43. a water temperature controller, a water temperature control device,
44. a water pump is arranged on the water tank,
45. a water flow meter,
46. A first temperature sensor for measuring a temperature of the fluid,
47. a first pressure sensor for measuring the pressure of the gas,
5. a pressure regulating valve,
6. an exhaust valve is arranged on the air inlet pipe,
7. the flow rate of the liquid flowing through the flow meter,
8. the sensor module is used for detecting the position of the sensor module,
81. the second pressure sensor is arranged on the second side of the first pressure sensor,
82. a second temperature sensor for measuring a temperature of the liquid,
83. a second humidity sensor.
Detailed Description
The present invention is further described below in conjunction with the following embodiments and the accompanying drawings, it being understood that the drawings and the following embodiments are illustrative of the present invention only and are not limiting.
The application discloses a fuel cell ejector testing system, which is used for testing the ejection capacity of an ejector, wherein the ejector to be tested is provided with an ejector jet port, an ejector drainage port and an ejector outlet; the test system includes: the gas supply module, the pressure control module, the temperature and humidity control module and the sensor module for detecting pressure, temperature and humidity are sequentially connected with the ejector jet port, the inlet of the temperature and humidity control module is connected with the ejector outlet, the outlet of the temperature and humidity control module is connected with the ejector drainage port, an exhaust valve and a pressure regulating valve are further arranged between the outlet of the temperature and humidity control module and the ejector drainage port, and flow meters are respectively arranged at the downstream of the gas supply module and the upstream of the ejector drainage port.
Compared with the prior art, the utility model discloses a fuel cell ejector test system accords with the actual running state of ejector among the fuel cell, and the ejector is the same with its position in the fuel cell system in this test system's position to can also simulate out the characteristic that produces water and humidified gas in the fuel cell operation process. Therefore, the influence of the flow, pressure, temperature and humidity of the gas on the ejection performance of the ejector can be tested, and the test system has fewer components, simple structure and easy operation.
Fig. 1 shows a fuel cell injector test system according to an embodiment of the present invention. The fuel cell ejector testing system of the embodiment can be used for testing the ejector capacity of the ejector, and the ejector 3 to be tested is an existing ejector and is provided with an ejector jet port 31, an ejector drainage port 32 and an ejector outlet 33.
As shown in fig. 1, the test system according to the present embodiment includes: the device comprises a gas supply module 1, a pressure control module 2, a temperature and humidity control module 4 and a sensor module 8 for detecting pressure, temperature and humidity.
The gas supply module 1 and the pressure control module 2 are sequentially connected with the ejector jet port 31. The inlet of the temperature and humidity control module 4 is connected with the ejector outlet 33, and the outlet of the temperature and humidity control module 4 is connected with the ejector drainage port 32. An exhaust valve 6 and a pressure regulating valve 5 are also arranged between the outlet of the temperature and humidity control module 4 and the ejector drainage port 32. A flow meter 7 is provided downstream of the gas supply module 1 and upstream of the ejector flow guide 32.
Specifically, the gas supply module 1 is a high-pressure gas source capable of providing a certain pressure, and includes a high-pressure gas cylinder and the like, for example, a high-pressure gas source capable of providing a pressure of more than 5MPa, and the specific range of the high-pressure gas source is related to the bearable capacity of the pressure control module. The pressure control module 2 may be a proportional valve or a gas injector. The gas injector may be an existing device, which functions as a proportional valve, and may adjust the opening of the valve body to perform rear end pressure control. The exhaust valve 6 may be a solenoid valve or a pneumatic valve. The pressure regulating valve 5 may be a proportional valve or a hand valve.
As shown in fig. 1, in the present embodiment, the sensor module may include a first sensor unit disposed upstream of the ejector jet port 31, a second sensor unit disposed upstream of the ejector flow-guiding port 32, a third sensor unit disposed downstream of the ejector outlet 33, and a fourth sensor unit disposed downstream of the temperature and humidity control module 4. Each sensor unit may include a second pressure sensor 81, a second temperature sensor 82, and a second humidity sensor 83, respectively.
As also shown in fig. 1, the temperature and humidity control module 4 may include a wet film humidifier 41, an adjusting valve 42, a water temperature controller 43, a water pump 44, and a water flow meter 45 connected in series in sequence. Further, a first temperature sensor 46 and a first pressure sensor 47 are mounted on both the upstream and downstream sides of the wet film humidifier 41. The water temperature controller 43 may include a water heater and a radiator.
The operation of the fuel cell ejector testing system is further described with reference to the accompanying drawings.
As shown in fig. 1, in the present embodiment, the hydrogen flow path: the high-pressure hydrogen from the gas supply module 1 is input to the ejector jet port 31 through the pressure control module 2, flows through the ejector 3, flows out of the ejector outlet 33, enters the wet film humidifier 41, flows out of the wet film humidifier 41, flows through the pressure regulating valve 5, is partially discharged to the outside through the exhaust valve 6, partially flows through the flow meter 7, enters the ejector 3 through the ejector drainage port 32, is mixed with the gas in the ejector jet port 31, and flows out of the ejector outlet 33 to form a circulation. In the present embodiment, the water flow path: from the water pump 44, it passes through the water flow meter 45, the wet film humidifier 41, the regulating valve 42, the water temperature controller 43, and then returns to the water pump 44.
Controlling gas flow: the exhaust valve 6 can simulate the hydrogen consumption of the galvanic pile, and the actual hydrogen consumption of the system is matched according to the feedback value of the flow meter 7 at the front end. Specifically, according to the test system in fig. 1, the gas flow out of the gas outlet valve 6 can be read by a flow meter 7 intermediate the gas supply module 1 and the pressure control module 2. In actual operation, a fuel cell consumes a certain amount of hydrogen. The exhaust valve 6 can be directly adjusted during the test process, so that the flow of the gas flowing out is equal to the consumption of the hydrogen under the working condition.
Controlling the temperature and humidity of gas: in the temperature and humidity control module 4 (for example, via the water pump 44 and the regulating valve 42), the flow rate and pressure of the water circuit can be regulated, and the water temperature controller 43 can control the water temperature. The humidity and temperature of the gas in the wet film humidifier 41 can be adjusted by adjusting the water-side pressure, temperature, and flow rate. As described above, in the present embodiment, the water flow path (i.e., water passage): from the water pump 44, it passes through the water flow meter 45, the wet film humidifier 41, the regulating valve 42, the water temperature controller 43, and then returns to the water pump 44. The above "water side" means: in the wet film humidifier 41, gas and water are respectively arranged on two sides of the film, water can permeate the film to enter the gas, but the gas cannot pass through the film, so that the gas can be humidified, and the gas flows through the gas side of the film and the water flows through the water side of the film.
Controlling gas pressure: control is performed by a pressure control module 2, such as a proportional valve. The proportional valve can be combined with a pressure sensor at the ejector outlet 33 to form closed-loop control, and any pressure can be set. The pressure regulating valve 5 can be used to simulate the flow resistance of the stack. Specifically, the flow resistance of the pressure regulating valve 5 is increased or decreased by the opening degree of the pressure regulating valve 5, and the actual pressure drop value is read by reading the values of the pressure sensors at the front and rear ends thereof, and then is kept consistent with the pressure drop value of the stack under the working condition, so that the flow resistance of the stack can be simulated.
The present invention will be described in detail with reference to examples. It should also be understood that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the modifications and adjustments made by those skilled in the art according to the above-mentioned contents of the present invention are not essential to the present invention. The specific process parameters and the like of the following examples are also only one example of suitable ranges, i.e., those skilled in the art can select the appropriate ranges through the description herein, and are not limited to the specific values exemplified below.
For example: under a certain working condition, the hydrogen inlet pressure of the galvanic pile is 140Kpa, and the outlet pressure is 120 Kpa; the inlet temperature of the galvanic pile is 65 ℃, and the outlet temperature of the galvanic pile is 70 ℃; the inlet humidity of the galvanic pile is 80%, the outlet humidity is 100%, the hydrogen consumption is 400slpm, and the injection capacity of the injector to be tested is measured under the working condition.
The pressure of the ejector outlet 33 is set to 140Kpa by adjusting the pressure control module 2, and the pressure regulating valve 5 is adjusted to set the pressure after the temperature and humidity control module 4 to 120 Kpa.
The temperature and humidity control module 4 is used for replacing the galvanic pile. Specifically, for the system, the fuel cell functions in the system from the viewpoint of hydrogen: the temperature and humidity control module can simulate the electric pile to generate water, and the test system is also a main innovation point. The water pump 44 and the water temperature controller 43 in the temperature and humidity control module 4 are adjusted to make the inlet temperature of the temperature and humidity control module 4 reach 65 ℃ and 80% of humidity, and the outlet temperature reaches 70 ℃ and 100% of humidity.
The stack consumption is simulated by adjusting the opening of the exhaust valve 6, so that the reading of the flowmeter 7 in front of the ejector jet orifice 31 is 400 slpm.
And finally, reading the pressure P1/P2/P3 at the jet port 31/the jet port 32/the jet port outlet of the injector, the flow Q1 of the jet port 31 of the injector and the flow Q2 of the jet port 32 of the injector, specifically, if a control monitoring module is arranged, communicating each sensor with the control monitoring module, and reading the pressure on the monitoring module, or directly reading the pressure from the sensor directly by adopting a sensor with a digital display, so that performance data such as the jet ratio of the injector can be obtained, and the design of the injector is optimized.
The present invention may be embodied in several forms without departing from the spirit of the essential characteristics thereof, and the embodiments are therefore to be considered in all respects as illustrative and not restrictive, since the scope of the invention is defined by the appended claims rather than by the description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (10)
1. A fuel cell ejector test system is used for testing the ejection capacity of an ejector, and an ejector (3) to be tested is provided with an ejector jet port (31), an ejector drainage port (32) and an ejector outlet (33);
characterized in that, this test system includes:
a gas supply module (1), a pressure control module (2), a temperature and humidity control module (4) and a sensor module (8) for detecting pressure, temperature and humidity,
the gas supply module (1) and the pressure control module (2) are sequentially connected with the ejector jet port (31), an inlet of the temperature and humidity control module (4) is connected with the ejector outlet (33), an outlet of the temperature and humidity control module (4) is connected with the ejector drainage port (32), an exhaust valve (6) and a pressure regulating valve (5) are further arranged between an outlet of the temperature and humidity control module (4) and the ejector drainage port (32), and a flow meter (7) is respectively arranged at the downstream of the gas supply module (1) and at the upstream of the ejector drainage port (32).
2. The fuel cell injector test system according to claim 1, wherein the sensor module includes a first sensor unit disposed upstream of the injector jet orifice (31), a second sensor unit disposed upstream of the injector flow vent (32), a third sensor unit disposed downstream of the injector outlet (33), and a fourth sensor unit disposed downstream of the temperature and humidity control module (4).
3. The fuel cell ejector testing system according to claim 1, wherein the temperature and humidity control module (4) comprises a wet film humidifier (41), a regulating valve (42), a water temperature controller (43), a water pump (44) and a water flow meter (45) which are connected in series in sequence.
4. The fuel cell injector testing system according to claim 3, wherein a first temperature sensor (46) and a first pressure sensor (47) are mounted upstream and downstream of the wet film humidifier (41).
5. The fuel cell injector testing system of claim 3, wherein the water temperature controller (43) includes a water heater and a heat sink.
6. The fuel cell injector testing system according to claim 1, wherein the gas supply module (1) is a high pressure gas source capable of providing a certain pressure.
7. The fuel cell injector testing system of claim 1, wherein the pressure control module (2) is a proportional valve or a gas injector.
8. The fuel cell injector testing system according to claim 1, wherein the vent valve (6) is a solenoid valve or a pneumatic valve.
9. The fuel cell injector test system according to claim 1, wherein the pressure regulating valve (5) is a proportional valve or a hand valve.
10. The fuel cell injector testing system of claim 2, wherein each sensor unit includes a second pressure sensor (81), a second temperature sensor (82), and a second humidity sensor (83).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920942989.6U CN209927167U (en) | 2019-06-21 | 2019-06-21 | Fuel cell ejector test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920942989.6U CN209927167U (en) | 2019-06-21 | 2019-06-21 | Fuel cell ejector test system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111929043A (en) * | 2020-07-13 | 2020-11-13 | 北京光徽德润航空技术有限公司 | Performance test system and method for aircraft ejector |
| CN112697486A (en) * | 2020-12-07 | 2021-04-23 | 上海朝临动力科技有限公司 | Performance detection device for compression and expansion integrated machine |
| CN112768734A (en) * | 2021-01-25 | 2021-05-07 | 湖南省计量检测研究院 | Fuel cell hydrogen ejector refrigerant temperature difference flow monitoring device |
| CN115356090A (en) * | 2022-07-14 | 2022-11-18 | 北京氢燃科技有限公司 | Test system and test method of fuel cell ejector |
-
2019
- 2019-06-21 CN CN201920942989.6U patent/CN209927167U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111929043A (en) * | 2020-07-13 | 2020-11-13 | 北京光徽德润航空技术有限公司 | Performance test system and method for aircraft ejector |
| CN112697486A (en) * | 2020-12-07 | 2021-04-23 | 上海朝临动力科技有限公司 | Performance detection device for compression and expansion integrated machine |
| CN112697486B (en) * | 2020-12-07 | 2023-09-26 | 上海朝临动力科技有限公司 | Performance detection device of compression and expansion integrated machine |
| CN112768734A (en) * | 2021-01-25 | 2021-05-07 | 湖南省计量检测研究院 | Fuel cell hydrogen ejector refrigerant temperature difference flow monitoring device |
| CN112768734B (en) * | 2021-01-25 | 2022-07-19 | 湖南省计量检测研究院 | Fuel cell hydrogen ejector refrigerant temperature difference flow monitoring device |
| CN115356090A (en) * | 2022-07-14 | 2022-11-18 | 北京氢燃科技有限公司 | Test system and test method of fuel cell ejector |
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