CN216749987U - Pressure reducing element test device for hydrogen supply system of fuel cell - Google Patents
Pressure reducing element test device for hydrogen supply system of fuel cell Download PDFInfo
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- CN216749987U CN216749987U CN202122523701.1U CN202122523701U CN216749987U CN 216749987 U CN216749987 U CN 216749987U CN 202122523701 U CN202122523701 U CN 202122523701U CN 216749987 U CN216749987 U CN 216749987U
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Abstract
The utility model discloses a pressure reducing element test device of a fuel cell hydrogen supply system, which comprises a main test path, wherein the main test path is sequentially provided with a hydrogen storage bottle, a first control valve, a first flowmeter, a first pressure sensor, a pressure reducing element, a second pressure sensor, a second control valve for simulating the back pressure of a fuel cell, a third pressure sensor, a third control valve and a tail discharge port along the airflow direction, and the performance test of the pressure reducing element is realized through the flow and pressure values respectively detected by the flowmeter and the pressure sensor. The pressure reducing element test device for the hydrogen supply system of the fuel cell provided by the utility model completes the performance verification of the pressure reducing element in the process of designing the pressure reducing element, improves the feasibility of designing the pressure reducing element, shortens the research and development period and reduces the research and development cost.
Description
Technical Field
The utility model relates to the technical field of fuel cells, in particular to a pressure reduction element test device of a hydrogen supply system of a fuel cell.
Background
The principle of the fuel cell is that a hydrogen supply system of the fuel cell provides hydrogen fuel, and the hydrogen fuel generates electrochemical reaction in the fuel cell to generate current and simultaneously generate water.
The fuel cell has high requirements on the pressure and flow stability of the hydrogen fuel, and therefore, in a hydrogen supply system, a pressure reducing element is required to be designed at the inlet end of the fuel cell to meet the requirements of the hydrogen fuel on the pressure and flow stability.
At present, the design of a pressure reducing element is generally that parameters of the pressure reducing element are determined according to parameters of a fuel cell, and the pressure reducing element is directly integrated into a hydrogen supply system of the fuel cell for verification after the pressure reducing element is manufactured, so that the fuel cell is possibly damaged, and the defects of low design feasibility, long research and development period, high research and development cost and the like exist.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a pressure reducing element test device for a hydrogen supply system of a fuel cell, and aims to solve the technical problems of low design feasibility, long research and development period and high research and development cost in the design process of the pressure reducing element of the hydrogen supply system of the existing fuel cell.
In order to achieve the purpose, the pressure reduction element test device for the hydrogen supply system of the fuel cell provided by the utility model comprises a main test path, wherein a hydrogen storage bottle, a first control valve, a first flowmeter, a first pressure sensor, a pressure reduction element, a second pressure sensor, a second control valve for simulating the back pressure of the fuel cell, a third pressure sensor, a third control valve and a tail discharge port are sequentially arranged on the main test path along the airflow direction.
Preferably, a pipeline between the third pressure sensor and the third control valve is connected with a return branch and a simulation branch, the return branch is sequentially provided with a second flowmeter, a fourth pressure sensor and a one-way valve along the airflow direction, the simulation branch is provided with a fourth control valve, and the simulation branch is used for simulating the hydrogen consumption of the fuel cell.
Preferably, the second and fourth control valves are proportional valves.
Preferably, the first control valve is a high pressure reducing valve.
Preferably, the third control valve is a solenoid valve.
Preferably, the tail gate is provided with a flame arrester.
Preferably, the first flow meter and the second flow meter are both mass flow meters.
Preferably, the first pressure sensor, the second pressure sensor, the third pressure sensor and the fourth pressure sensor are all ceramic pressure sensors.
Preferably, the pressure reduction element test device for the fuel cell hydrogen supply system further comprises a power supply module, and the power supply module supplies power to all control valves, sensors and flow meters on the test main path, the return branch path and the simulation branch path.
Preferably, the pressure reduction element test device for the hydrogen supply system of the fuel cell further comprises a control module, the control module controls the power supply of the power supply module, and the control module collects the flow and pressure values of the test main path and the return branch in real time.
According to the pressure reducing element test device for the hydrogen supply system of the fuel cell, when hydrogen flows through the test main path, the first flowmeter detects the flow passing through the pressure reducing element, the first pressure sensor, the second pressure sensor and the third pressure sensor respectively detect the pressure of the hydrogen before the hydrogen enters the pressure reducing element, the pressure of the hydrogen after the hydrogen passes through the pressure reducing element and the pressure of the hydrogen after the hydrogen passes through the second control valve, and the performance test of the pressure reducing element is realized through the detected flow and pressure values. The pressure reducing element test device for the hydrogen supply system of the fuel cell provided by the utility model completes the performance verification of the pressure reducing element in the process of designing the pressure reducing element, improves the feasibility of designing the pressure reducing element, shortens the research and development period and reduces the research and development cost.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a pressure reduction element testing apparatus of a fuel cell hydrogen supply system according to the present invention.
The reference numbers illustrate:
the achievement of the objects, the functional characteristics and the advantages of the utility model will be further explained with the embodiments and with reference to the attached drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and back) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Example one
The embodiment of the utility model provides a pressure reduction element test device for a hydrogen supply system of a fuel cell, and referring to fig. 1, the pressure reduction element test device for the hydrogen supply system of the fuel cell comprises a main test path 1, wherein a hydrogen storage bottle 10, a first control valve 11, a first flow meter 12, a first pressure sensor 13, a pressure reduction element 14, a second pressure sensor 15, a second control valve 16 for simulating the back pressure of the fuel cell, a third pressure sensor 17, a third control valve 18 and a tail discharge port 19 are sequentially arranged on the main test path along the airflow direction.
In this embodiment, the first flow meter 12 is configured to detect a flow value flowing through the pressure reducing element 14, the first pressure sensor 13, the second pressure sensor 15, and the third pressure sensor 17 are configured to detect a pressure value before hydrogen enters the pressure reducing element 14, a pressure value after hydrogen flows through the pressure reducing element 14, and a pressure value after hydrogen flows through the second control valve 16, respectively, the second control valve is configured to simulate a back pressure of the fuel cell, and a flow-pressure relation graph of the pressure reducing element 14 is completed through the collected flow value and pressure value, so as to implement a performance test on the pressure reducing element 14. Specifically, on the main test path 1, the hydrogen storage bottle 10 provides high-pressure hydrogen, and the high-pressure hydrogen flows through the first control valve 11, and the first control valve 11 decompresses the high-pressure hydrogen, then flows through the first flow meter 12, the first pressure sensor 13, the decompression element 14, the second pressure sensor 15, the second control valve 16, the third pressure sensor 17, and the third control valve 18 in sequence, and is finally discharged through the tail discharge port 19. And obtaining a relation curve chart of the flow and the pressure of the decompression element 14 through the flow value detected by the first flowmeter 12 and the pressure values respectively detected by the first pressure sensor 13, the second pressure sensor 15 and the third pressure sensor 17, and completing a performance test of the decompression element 14. The pressure reducing element test device for the hydrogen supply system of the fuel cell provided by the embodiment completes the performance verification of the pressure reducing element 14 in the process of designing the pressure reducing element 14, improves the feasibility of designing the pressure reducing element 14, shortens the research and development period and reduces the research and development cost.
Example two
Referring to fig. 1, a return branch 2 and a simulation branch 3 are connected to a pipeline between a third pressure sensor 17 and a third control valve 18 according to an embodiment of the present invention, the return branch 2 is sequentially provided with a second flow meter 21, a fourth pressure sensor 22 and a check valve 23 along a gas flow direction, the simulation branch 3 is provided with a fourth control valve 31, and the simulation branch 3 is used for simulating hydrogen consumption of a fuel cell.
In this embodiment, the backflow branch 2 is used to simulate the backflow state of hydrogen after the fuel cell reaction, and the simulation branch 3 is used to simulate the consumption of hydrogen after the fuel cell reaction. The inlet end of the return branch 2 is connected to a pipeline between the third pressure sensor 17 and the third control valve 18, the outlet end is connected to a pipeline between the second pressure sensor 15 and the second control valve 16, the inlet end of the analog branch 3 is connected to a pipeline between the third pressure sensor 17 and the third control valve 18, and the outlet end is connected to a pipeline at the rear end of the third control valve 18. The simulation branch 3 is provided with a fourth control valve 31, the fourth control valve 31 is used for simulating the consumption of hydrogen in the fuel cell, the return branch 2 is sequentially provided with a second flow meter 21, a fourth pressure sensor 22 and a one-way valve 23 along the airflow direction, the second flow meter 21 is used for detecting the flow of the returned hydrogen, the fourth pressure sensor 22 is used for detecting the pressure of the returned hydrogen, and the control test of the pressure reducing element 14 is further completed through the flow values and the pressure values detected on the main test path 1 and the return branch 2. Specifically, on the main test path 1, a hydrogen storage bottle 10 supplies high-pressure hydrogen gas, the high-pressure hydrogen gas flows through a first control valve 11, the first control valve 11 depressurizes the high-pressure hydrogen gas, then flows through the first flow meter 12, the first pressure sensor 13, the pressure reducing member 14, the second pressure sensor 15, the second control valve 16 and the third pressure sensor 17 in this order, then, the hydrogen gas is branched by the return branch 2 and the simulation branch 3, and the fourth control valve 31 of the simulation branch 3 simulates the hydrogen consumption state in the fuel cell, and at this time, the hydrogen gas entering the return branch 2 is the hydrogen gas remaining after the reaction of the fuel cell, the second flow meter 21 detects the flow rate of the returned hydrogen gas, the fourth pressure sensor 22 detects the pressure of the returned hydrogen gas, the control test of the pressure reducing element 14 is further realized through the flow value and the pressure value detected on the main test path 1 and the return branch 2.
EXAMPLE III
Referring to fig. 1, the second control valve 16 and the fourth control valve 31 according to the embodiment of the present invention are proportional valves.
In this embodiment, the second control valve 16 and the fourth control valve 31 are proportional valves, which can continuously and proportionally control the pressure and flow rate of hydrogen according to the input electrical signal, and the proportional valves also have pressure compensation performance, and the output pressure and flow rate can not be affected by the load change. Therefore, the proportional valve is used for simulating the back pressure of the fuel cell, the resistance balance can be adjusted, and the test error caused by the unbalanced resistance is reduced; the fourth control valve 31 is used for simulating the consumption of the hydrogen of the fuel cell, controlling the opening of the fourth control valve 31 in real time according to the working states of different fuel cells, simulating the consumption of the hydrogen of the fuel cell, and improving the reliability of simulating the working of the fuel cell and the accuracy of the test result.
Example four
Referring to fig. 1, the first control valve 11 according to the embodiment of the present invention is a high pressure reducing valve.
In this embodiment, the first control valve 11 is a high-pressure reducing valve, and the high-pressure reducing valve adjusts the flow rate of the hydrogen by controlling the opening degree of the opening and closing member in the valve body, so that the pressure of the hydrogen is kept within a certain range. The inlet end of the first control valve 11 is connected with the hydrogen storage bottle 10, the hydrogen pressure of the hydrogen storage bottle 10 is usually over 12Mpa, and the hydrogen can not be directly supplied to the fuel cell, the high-pressure reducing valve is selected to reduce the pressure of the hydrogen in the hydrogen storage bottle 10, even if the pressure of the hydrogen output by the hydrogen storage bottle 10 changes, the high-pressure reducing valve can keep the outlet pressure within a set range, and the parts at the rear end are protected.
EXAMPLE five
Referring to fig. 1, the third control valve 18 according to the embodiment of the present invention is a solenoid valve.
In this embodiment, the third control valve 18 is an electromagnetic valve, which is automatically controlled to open or close by a power supply, and has the characteristics of fast response, low cost, high safety and the like. The third control valve 18 is mainly used for controlling the emission of the hydrogen fuel after the reaction of the fuel cell, and an electromagnetic valve is selected, so that the tail emission efficiency and the safety are improved.
EXAMPLE six
Referring to fig. 1, a back vent 19 according to an embodiment of the present invention is provided with a flame arrester.
In this embodiment, the fire arrestor is arranged at the tail outlet 19, so as to prevent external flames from entering the pipeline from the tail outlet 19 or prevent the flames from spreading in the pipeline, thereby improving the safety.
EXAMPLE seven
Referring to fig. 1, the first flowmeter 12 and the second flowmeter 21 according to the embodiment of the present invention are mass flowmeters.
In this embodiment, the first flowmeter 12 and the second flowmeter 21 are both mass flowmeters, and the mass flowmeters have the advantages of high response speed, good linearity, and the like. The mass flow meter can improve the efficiency and accuracy of the test.
Example eight
Referring to fig. 1, the first pressure sensor 13, the second pressure sensor 15, the third pressure sensor 17, and the fourth pressure sensor 22 according to the embodiment of the present invention are all ceramic pressure sensors.
In this embodiment, the first pressure sensor 13, the second pressure sensor 15, the third pressure sensor 17, and the fourth pressure sensor 22 are ceramic pressure sensors. The ceramic pressure sensor has the advantages of good linearity, good precision and the like. The adoption of the ceramic pressure sensor can improve the reliability of the test.
Example nine
Referring to fig. 1, the pressure reducing element testing apparatus for a hydrogen supply system of a fuel cell provided in the embodiment of the present invention further includes a power supply module, where the power supply module supplies power to all control valves, sensors, and flow meters on the main test path 1, the return branch 2, and the simulation branch 3.
In this embodiment, the power supply module is electrically connected to the components on the test main circuit 1, the backflow branch circuit 2, and the simulation branch circuit 3, and supplies power to the components.
Example ten
Referring to fig. 1, the pressure reducing element testing apparatus for a hydrogen supply system of a fuel cell provided in the embodiment of the present invention further includes a control module, where the control module controls the power supply module to supply power, and the control module collects flow and pressure values of the main test circuit 1 and the return branch circuit 2 in real time.
In this embodiment, the control module is mainly used to control the power supply module to supply power, and control the main test path 1, the backflow path 2, and the simulation path 3, for example, the control power supply module supplies power to all control valves, sensors, and flow meters on the main test path 1, the backflow path 2, and the simulation path 3, and controls opening and closing of the control valves, opening of the simulation path 3, and the like. In addition, the control module collects the flow value and the pressure value on the pipeline in real time, automatically analyzes the relation between the flow and the pressure of the pressure reducing element 14, and realizes the performance test of the pressure reducing element 14 and the test of the control strategy of the pressure reducing element in the hydrogen supply system.
The above description is only a part of or preferred embodiments of the present invention, and neither the text nor the drawings should be construed as limiting the scope of the present invention, and all equivalent structural changes, which are made by using the contents of the present specification and the drawings, or any other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The pressure reduction element test device for the fuel cell hydrogen supply system is characterized by comprising a main test path, wherein the main test path is sequentially provided with a hydrogen storage bottle, a first control valve, a first flowmeter, a first pressure sensor, a pressure reduction element, a second pressure sensor, a second control valve for simulating the back pressure of a fuel cell, a third pressure sensor, a third control valve and a tail discharge port along the airflow direction.
2. The pressure reducing element testing device for the hydrogen supply system of the fuel cell as claimed in claim 1, wherein a return branch and a simulation branch are connected to a pipeline between the third pressure sensor and the third control valve, the return branch is sequentially provided with a second flowmeter, a fourth pressure sensor and a one-way valve along the gas flow direction, the simulation branch is provided with a fourth control valve, and the simulation branch is used for simulating the hydrogen consumption of the fuel cell.
3. The fuel cell hydrogen supply system pressure reducing element testing apparatus of claim 2, wherein the second and fourth control valves are proportional valves.
4. The fuel cell hydrogen supply system pressure reducing element testing apparatus as defined in claim 1, wherein the first control valve is a high pressure reducing valve.
5. The fuel cell hydrogen supply system pressure reducing element testing apparatus as defined in claim 1, wherein the third control valve is an electromagnetic valve.
6. The fuel cell hydrogen supply system pressure reduction element testing apparatus as defined in claim 1, wherein the tail gate is provided with a flame arrestor.
7. The fuel cell hydrogen supply system pressure reducing element testing device of claim 2, wherein the first flow meter and the second flow meter are both mass flow meters.
8. The fuel cell hydrogen supply system pressure reducing element testing device of claim 2, wherein the first pressure sensor, the second pressure sensor, the third pressure sensor and the fourth pressure sensor are all ceramic pressure sensors.
9. The fuel cell hydrogen supply system pressure reduction element test device of claim 2, further comprising a power supply module, wherein the power supply module supplies power to all control valves, sensors and flow meters on the main test path, the return branch path and the simulation branch path.
10. The pressure reduction element testing device of the fuel cell hydrogen supply system according to claim 9, further comprising a control module, wherein the control module controls the power supply module to supply power, and the control module collects flow and pressure values of the main test path and the return branch in real time.
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| CN114006010A (en) * | 2021-10-19 | 2022-02-01 | 深圳国氢新能源科技有限公司 | Pressure reducing element test device for hydrogen supply system of fuel cell |
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| CN114006010A (en) * | 2021-10-19 | 2022-02-01 | 深圳国氢新能源科技有限公司 | Pressure reducing element test device for hydrogen supply system of fuel cell |
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