Testing device for filter of fuel cell cooling system

Abstract

The utility model provides a testing device for a filter of a fuel cell cooling system. The testing device comprises a water pump, a first pressure sensor, a first conductivity tester, a filter, a tensile machine, a second conductivity tester, a second pressure sensor, a flow meter, a temperature control water tank, a temperature sensor, a data acquisition control unit, a water adding port, a water discharging port and an exhaust port, by adjusting the rotating speed of the water pump and the temperature of the temperature control water tank, pressure loss testing, conductivity testing, tension testing, filtering capacity testing and service life testing of the filter under different flows, different temperatures and flows can be carried out. The device can generate a pressure loss performance curve for model selection, detection of ion precipitation amount and ultimate tension value, and judgment of filtering capacity and service life, has the advantages of reduction of test cost, simulation of actual working conditions and the like, and can comprehensively detect whether the performance of the filter meets the use requirements of a fuel cell system or not.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel cell cooling system technical field, specifically, especially, a kind of testing device for filter of fuel cell cooling system. BACKGROUND

[0002] Fuel cell system is a complex whole, it is composed of stack (module), hydrogen system, air system, water thermal management system, control system and multiple parts.Each system is also composed of numerous parts.In fuel cell system test, testing system parts is inevitable.However, single part is tested on system, there are many problems, on the one hand, it is too complex, will involve numerous subsystems, lead to test bench also become extremely complex, greatly increase the test cost;On the other hand, it will also waste a lot of resources.How to test single part, reduce the parts on test bench as much as possible, make it relatively independent with other subsystems.At the same time, also can realize the performance test of part, to ensure that in the case where not affecting other subsystems, the performance of single part is accurately tested, become the problem that fuel cell system test is urgently solved. SUMMARY

[0003] According to the technical problem proposed above, a testing device for filter of fuel cell cooling system is provided.The utility model reduces test bench parts, and keeps relatively independent with other subsystems, while in the case where not affecting other subsystems, the performance test of part can also be realized.

[0004] The technical means adopted by the utility model are as follows:

[0005] A testing device for filter of fuel cell cooling system, comprising: water pump, first pressure sensor, first electric conductivity tester, filter, tension machine, second electric conductivity tester, second pressure sensor, flowmeter, temperature-controlled water tank, temperature sensor, data acquisition control unit, water inlet, drain and exhaust port;

[0006] The outlet of the water pump is communicated with the inlet of the first conductivity tester, a first pressure sensor is installed on the pipeline connecting the outlet of the water pump with the inlet of the first conductivity tester, the outlet of the first conductivity tester is communicated with the inlet of the filter, the outlet of the filter is communicated with the inlet of the second conductivity tester, the two ends of the tension machine are respectively connected with the two ends of the filter, the outlet of the second conductivity tester is communicated with the inlet of the flow meter, a second pressure sensor is installed on the pipeline connecting the outlet of the second conductivity tester with the inlet of the flow meter, the outlet of the flow meter is communicated with the temperature-controlled water tank, the inlet of the water pump is communicated with the temperature-controlled water tank, the temperature-controlled water tank is provided with a heater, a temperature control unit, a temperature sensor, a water inlet, a water outlet and an exhaust port, and the data acquisition control unit is electrically connected with the temperature sensor, the first pressure sensor, the first conductivity tester, the second conductivity tester, the second pressure sensor, and the flow meter.

[0007] Further, the pressure loss test of the filter under different flow rates is performed by adjusting the rotation speed of the water pump to control the flow rate of the cooling liquid passing through the filter, the flow rate value of the cooling liquid is monitored in real time by the flow meter, the pressure value P1 before the filter is measured by the first pressure sensor, the pressure value P2 after the filter is measured by the second pressure sensor, and the difference between P2 and P1 is the pressure loss value of the filter under the flow rate, and the pressure loss values under different flow rates can be obtained by changing the rotation speed of the water pump, and a pressure loss performance curve is generated, which is used for filter selection of a fuel cell system.

[0008] Further, the conductivity test of the filter under different temperatures and flow rates is performed by changing the temperature of the cooling liquid by the temperature control unit and the heater in the temperature-controlled water tank, and adjusting the flow rate of the cooling liquid by adjusting the rotation speed of the water pump, the conductivity value σ1 of the cooling liquid before the filter is measured by the first conductivity tester, the conductivity value σ2 of the cooling liquid before the filter is measured by the second conductivity tester, and the difference between σ2 and σ1 is the conductivity improvement value of the cooling liquid under the temperature and flow rate, i.e. the ion precipitation amount of the filter, and the ion precipitation amount under different working conditions can be measured by adjusting the temperature and flow rate.

[0009] Further, the tension test of the filter under different temperatures and flow rates is performed by changing the tension value of the tension machine to measure the maximum tension value of the filter in real time, and by changing the temperature of the cooling liquid by the temperature control unit and the heater in the temperature-controlled water tank and adjusting the flow rate of the cooling liquid by adjusting the rotation speed of the water pump, so as to obtain the limit tension value of the filter under different temperatures and flow rates.

[0010] Further, the filter capacity and service life of the filter are tested by the first pressure sensor and the second pressure sensor arranged on the inlet and outlet pipelines of the filter, the filter capacity and service life are judged according to the change curve of the flow resistance with time, the filter is replaced when the flow resistance increases to a limited value, and the service life is determined according to the replacement time period.

[0011] Further, the tension machine can perform dynamic pressure-bearing capacity testing on the filter, and the previous single detection mode of the filter is changed, so that the measurement tends to be closer to the actual operation state.

[0012] Further, the heater and the temperature control unit of the temperature control water tank can accurately control the temperature of the cooling liquid, and provide a stable temperature environment for testing the filter under different temperature conditions.

[0013] Further, the data acquisition and control unit can collect and process the data of the temperature sensor, the pressure sensor, the conductivity tester and the flow meter in real time, and realize accurate control and data monitoring of the testing process.

[0014] Compared with the prior art, the testing device for the filter of the fuel cell cooling system has the following advantages:

[0015] 1. The testing device for the filter of the fuel cell cooling system can accurately measure the pressure loss value of the filter under different flow rates, and generate a pressure loss performance curve, thereby providing a key basis for selecting the filter of the fuel cell system.

[0016] 2. Compared with the prior art, the testing device for the filter of the fuel cell cooling system reduces the test bench parts, maintains relative independence from other subsystems, effectively simplifies the structure of the testing system, reduces the testing cost, avoids resource waste, and improves the testing efficiency.

[0017] 3. The testing device for the filter of the fuel cell cooling system performs dynamic pressure-bearing capacity testing on the filter by the tension machine, adjusts the temperature and flow rate by the temperature control water tank and the water pump, simulates various working conditions of the filter in the actual operation of the fuel cell system, and makes the testing result closer to the actual working state, thereby providing strong support for the optimized design and reliable application of the filter.

[0018] Based on the above reasons, the testing device for the filter of the fuel cell cooling system can be popularized in the field of fuel cell cooling system technology. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0020] Figure 1 It is a kind of test device principle block diagram for filter of fuel cell cooling system described in the present application.

[0021] In the drawing: 1, water pump;2, first pressure sensor;3, first conductivity tester;4, filter;5, tensile testing machine;6, second conductivity tester;7, second pressure sensor;8, flow meter;9, temperature control water tank;10, temperature sensor;11, data acquisition control unit;12, water inlet;13, drain;14, exhaust port. DETAILED DESCRIPTION

[0022] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. The description of at least one exemplary embodiment is actually only illustrative, not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0024] It should be noted that the terms used herein are only for describing specific embodiments, not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form, and in addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, it means that there is a feature, step, operation, device, component and / or its combination.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0026] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0027] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0028] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0029] likeFigure 1 As shown, this utility model provides a testing device for a filter in a fuel cell cooling system, comprising: a water pump 1; a first pressure sensor 2; a first conductivity meter 3; a filter 4; a tensile testing machine 5; a second conductivity meter 6; a second pressure sensor 7; a flow meter 8; a temperature-controlled water tank 9; a temperature sensor 10; a data acquisition and control unit 11; a water inlet 12; a drain outlet 13; and an exhaust outlet 14.

[0030] The outlet of the water pump 1 is connected to the inlet of the first conductivity meter 3. A first pressure sensor 2 is installed on the pipeline connecting the outlet of the water pump 1 and the inlet of the first conductivity meter 3. The outlet of the first conductivity meter 3 is connected to the inlet of the filter 4. The outlet of the filter 4 is connected to the inlet of the second conductivity meter 6. The two ends of the tensile testing machine 5 are respectively connected to the two ends of the filter 4. The outlet of the second conductivity meter 6 is connected to the inlet of the flow meter 8. A second pressure sensor 7 is installed on the pipeline connecting the outlet of the second conductivity meter 6 and the inlet of the flow meter 8. The outlet of the flow meter 8 is connected to the temperature-controlled water tank 9. The inlet of the water pump 1 is connected to the temperature-controlled water tank 9. The temperature-controlled water tank 9 is equipped with a heater, a temperature control unit, a temperature sensor 10, a water inlet 12, a drain outlet 13, and an exhaust outlet 14. The data acquisition control unit 11 is electrically connected to the temperature sensor 10, the first pressure sensor 2, the first conductivity meter 3, the second conductivity meter 6, the second pressure sensor 7, and the flow meter 8.

[0031] Furthermore, the pressure loss test of the filter 4 at different flow rates is conducted. The speed of the water pump 1 is adjusted to control the flow rate of the coolant passing through the filter 4. The flow rate of the coolant passing through the filter 4 is monitored in real time by the flow meter 8. The pressure value P1 at the front end of the filter 4 is measured by the first pressure sensor 2, and the pressure value P2 at the rear end of the filter 4 is measured by the second pressure sensor 7. The difference between P2 and P1 is the pressure loss value of the filter 4 at this flow rate. By changing the speed of the water pump 1 to obtain different coolant flow rates, the corresponding pressure loss value of the filter 4 can be calculated. Finally, a pressure loss performance curve of the filter 4 can be generated, which can be used as a selection basis for the filter 4 in the fuel cell system.

[0032] Furthermore, the conductivity test of the filter 4 at different temperatures and flow rates is conducted by changing the temperature of the coolant in the testing device through the temperature control unit and heater in the temperature-controlled water tank 9; changing the flow rate of the coolant flowing through the filter 4 by adjusting the speed of the water pump 1; measuring the conductivity value σ1 of the coolant flowing through the front end of the filter 4 by the first conductivity tester 3, and measuring the conductivity value σ2 of the coolant flowing through the front end of the filter 4 by the second conductivity tester 6. The difference between σ2 and σ1 is the increase in conductivity of the coolant at this temperature and flow rate, which can also be understood as the amount of ion precipitation of the filter 4; by adjusting the temperature and flow rate of the coolant, the amount of ion precipitation of the filter 4 under different operating conditions can be measured.

[0033] Furthermore, the tensile test of the filter 4 at different temperatures and flow rates can be performed by changing the tensile force value of the tensile testing machine 5, thereby allowing the maximum tensile force that the filter 4 can withstand to be measured in real time. The temperature of the coolant in the testing device is changed by the temperature control unit and heater in the temperature-controlled water tank 9; the flow rate of the coolant flowing through the filter 4 is changed by adjusting the speed of the water pump 1; thus, the ultimate tensile force value that the filter 4 can withstand at different temperatures and flow rates can be obtained.

[0034] Furthermore, to test the filtration capacity and service life of the filter 4, a first pressure sensor 2 and a second pressure sensor 7 are installed on the inlet and outlet pipes of the filter 4. The pressure difference between the pressure sensors can determine the flow resistance of the filter 4 at different flow rates. Simultaneously, the filtration capacity and service life of the filter 4 can be evaluated based on the flow resistance change curve over time. When the filter 4 has been running in the system for a period of time and its flow resistance increases to a certain limit, the filter 4 needs to be replaced to prevent excessive flow resistance from affecting the cooling system's heat dissipation capacity. At this point, its service life can be evaluated based on the replacement cycle of the filter 4.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A testing apparatus for a filter in a fuel cell cooling system, characterized in that, include: Water pump (1), first pressure sensor (2), first conductivity tester (3), filter (4), tensile testing machine (5), second conductivity tester (6), second pressure sensor (7), flow meter (8), temperature-controlled water tank (9), temperature sensor (10), data acquisition and control unit (11), water inlet (12), drain outlet (13) and vent outlet (14); The outlet of the water pump (1) is connected to the inlet of the first conductivity meter (3). A first pressure sensor (2) is installed on the pipeline connecting the outlet of the water pump (1) and the inlet of the first conductivity meter (3). The outlet of the first conductivity meter (3) is connected to the inlet of the filter (4). The outlet of the filter (4) is connected to the inlet of the second conductivity meter (6). The two ends of the tensile testing machine (5) are respectively connected to the two ends of the filter (4). The outlet of the second conductivity meter (6) is connected to the inlet of the flow meter (8). A second pressure sensor (7) is installed on the inlet pipe of the flow meter (8). The outlet of the flow meter (8) is connected to the temperature-controlled water tank (9). The inlet of the water pump (1) is connected to the temperature-controlled water tank (9). The temperature-controlled water tank (9) is equipped with a heater, a temperature control unit, a temperature sensor (10), a water inlet (12), a drain outlet (13), and an exhaust outlet (14). The data acquisition control unit (11) is electrically connected to the temperature sensor (10), the first pressure sensor (2), the first conductivity meter (3), the second conductivity meter (6), the second pressure sensor (7), and the flow meter (8).

2. The testing apparatus for a filter in a fuel cell cooling system according to claim 1, characterized in that, The pressure loss test of the filter (4) under different flow rates is carried out by adjusting the speed of the water pump (1) to control the flow rate of the coolant flowing through the filter (4), and the flow rate value of the coolant is monitored in real time by the flow meter (8). The pressure value P1 at the front end of the filter (4) is measured by the first pressure sensor (2), and the pressure value P2 at the rear end of the filter (4) is measured by the second pressure sensor (7). The difference between P2 and P1 is the pressure loss value of the filter (4) under this flow rate. By changing the speed of the water pump (1), the pressure loss value under different flow rates can be obtained and a pressure loss performance curve can be generated. This curve is used for the selection of the filter (4) of the fuel cell system.

3. The testing apparatus for a filter in a fuel cell cooling system according to claim 1, characterized in that, The conductivity of the filter (4) under different temperatures and flow rates is tested by changing the temperature of the coolant through the temperature control unit and heater in the temperature-controlled water tank (9) and adjusting the speed of the water pump (1) to change the flow rate of the coolant. The conductivity value α1 of the coolant at the front end of the filter (4) is measured by the first conductivity tester (3), and the conductivity value σ2 of the coolant at the front end of the filter (4) is measured by the second conductivity tester (6). The difference between σ2 and σ1 is the conductivity increase of the coolant at that temperature and flow rate, which is the amount of ion precipitation of the filter (4). The amount of ion precipitation under different working conditions can be measured by adjusting the temperature and flow rate.

4. The testing apparatus for a filter in a fuel cell cooling system according to claim 1, characterized in that, The maximum tensile force that the filter (4) can withstand under different temperatures and flow rates is measured in real time by changing the tensile force value of the tensile testing machine (5). At the same time, the temperature control unit and heater in the temperature-controlled water tank (9) are combined to change the coolant temperature and adjust the speed of the water pump (1) to change the coolant flow rate, thereby obtaining the limit tensile force value that the filter (4) can withstand under different temperatures and flow rates.

5. A testing apparatus for a filter in a fuel cell cooling system according to claim 1, characterized in that, The filtration capacity and service life of the filter (4) are tested by using the first pressure sensor (2) and the second pressure sensor (7) installed on its inlet and outlet pipes to determine the flow resistance of the filter (4) at different flow rates. The filtration capacity and service life of the filter (4) are evaluated based on the curve of the flow resistance changing over time. When the flow resistance increases to a limit value, the filter (4) is replaced. Its service life is determined based on the replacement time cycle.

6. A testing apparatus for a filter in a fuel cell cooling system according to claim 1, characterized in that, The tensile testing machine (5) can perform dynamic pressure testing on the filter (4), which changes the previous method of simply testing the filter and makes the measurement more in line with the actual operating state.

7. A testing apparatus for a filter in a fuel cell cooling system according to claim 1, characterized in that, The heater and temperature control unit of the temperature-controlled water tank (9) can accurately control the temperature of the coolant, providing a stable temperature environment for the filter (4) to be tested under different temperature conditions.

8. A testing apparatus for a filter in a fuel cell cooling system according to claim 1, characterized in that, The data acquisition and control unit (11) can acquire and process data from the temperature sensor (10), pressure sensor, conductivity meter and flow meter (8) in real time, so as to achieve precise control and data monitoring of the testing process.

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