A freeze detection system for a hydrogen circulation pump and method of use

Abstract

The present application relates to the technical field of fuel cell, in particular to a kind of freezing observation system of hydrogen circulation pump and use method, hydrogen circulation pump includes motor and the pump head connected with motor;Observation hole, gas inlet and gas outlet are set on the pump head;The freezing observation system includes temperature box, water tank and control valve, the hydrogen circulation pump is placed in temperature box, and the water tank is communicated with gas inlet;The control valve is set on gas outlet;The freezing observation system of hydrogen circulation pump and control method can be observed and design analysis contrast for the freezing observation of hydrogen circulation pump, greatly reduce development time, improve development efficiency;Strong support is provided for hydrogen circulation pump anti-icing optimization and cold start.

Description

Technical Field

[0001] This invention relates to the field of fuel cell technology, and specifically to an icing observation system for a hydrogen circulation pump and its usage method. Background Technology

[0002] A fuel cell is a device that generates water by an electrochemical reaction between hydrogen and oxygen while simultaneously outputting electrical energy. It has advantages such as high power generation efficiency, low environmental pollution, high specific energy, and low noise, and has received widespread attention in the field of new energy and has good application prospects in the automotive industry.

[0003] As a core component of fuel cells, hydrogen circulation pumps often encounter the problem of icing in winter during use. Therefore, it is essential to observe and optimize the icing process during the design phase. However, there is currently no icing observation device or method for hydrogen circulation pumps in fuel cells. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an icing observation system for hydrogen circulation pumps in winter, and a method for using it.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] An icing observation system for a hydrogen circulation pump, the hydrogen circulation pump including a motor and a pump head connected to the motor; the pump head is provided with an observation hole, an air inlet and an air outlet;

[0007] The icing observation system includes a temperature chamber, a water tank, and a control valve. The hydrogen circulation pump is placed inside the temperature chamber, and the water tank is connected to the gas inlet. The control valve is located at the gas outlet.

[0008] To solve the above-mentioned technical problems, another technical solution adopted by the present invention is as follows:

[0009] A control method for the above-mentioned hydrogen circulation pump icing observation system includes:

[0010] S102. Start the hydrogen circulation pump and run it until the hydrogen circulation pump is stable. Check all connections of the icing observation system for leaks or other faults.

[0011] S103. Start the water tank and spray water into the pump head at a rate of 3-6 ml / min for 1-5 minutes; or introduce saturated wet steam into the pump head through the water tank for 7-15 minutes.

[0012] S104. Stop the water tank and purge the hydrogen circulation pump at the highest speed for 2-5 minutes.

[0013] S105. Start the incubator and begin cooling. Once the temperature inside the incubator reaches -45 to -30°C, maintain a constant temperature for 6 to 10 hours.

[0014] S106. Observe the internal icing area and icing thickness through the observation port on the hydrogen circulation pump.

[0015] The beneficial effects of this invention are as follows: the icing observation system and control method for the hydrogen circulation pump can be used for icing observation and design analysis and comparison of the hydrogen circulation pump, which greatly reduces development time and improves development efficiency; it also provides strong support for the optimization of hydrogen circulation pump anti-icing and cold start. Attached Figure Description

[0016] Figure 1 This is a system block diagram of an icing observation system for a hydrogen circulation pump according to a specific embodiment of the present invention.

[0017] Figure 2 A flowchart illustrating the usage method of an icing observation system for a hydrogen circulation pump, as described in a specific embodiment of the present invention.

[0018] Labeling Explanation: 1. Controller; 2. Temperature Chamber; 3. Temperature Sensor; 4. Hydrogen Circulation Pump; 5. Motor; 6. Pump Head; 7. Observation Hole; 8. Air Inlet; 9. Air Outlet; 10. Air Filter; 11. First Flow Meter; 12. Water Tank; 13. Nozzle; 14. Control Valve; 15. Second Flow Meter; 16. Pressure Gauge; 17. Exhaust Port. Detailed Implementation

[0019] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0020] Please refer to Figure 1 as well as Figure 2 An icing observation system for a hydrogen circulation pump 4, the hydrogen circulation pump 4 including a motor 5 and a pump head 6 connected to the motor 5; the pump head 6 is provided with an observation hole 7, an air inlet 8 and an air outlet 9.

[0021] The icing observation system includes a temperature chamber 2, a water tank 12, and a control valve 14. The hydrogen circulation pump 4 is placed inside the temperature chamber 2, and the water tank 12 is connected to the air inlet 8. The control valve 14 is located on the air outlet 9.

[0022] Furthermore, the observation hole 7 is a transparent, closed structure.

[0023] As described above, the observation hole 7, with its transparent and closed structure, can only serve the purpose of observation, preventing leakage of hydrogen gas.

[0024] Furthermore, the observation hole 7 is provided with a removable plug.

[0025] As described above, the removable plug allows for sealing during the operation of the hydrogen circulation pump 4.

[0026] Furthermore, the icing observation system also includes an endoscope, which enters the pump head 6 through the observation hole 7.

[0027] As described above, the endoscope allows for observation of the internal condition of the pump head 6, making the icing situation inside the pump head 6 more accurate.

[0028] Furthermore, the icing observation system also includes a controller 1, which is electrically connected to the hydrogen circulation pump 4, the temperature chamber 2, the water tank 12, and the control valve 14.

[0029] Furthermore, a temperature sensor 3 is installed inside the temperature chamber 2, and the temperature sensor 3 is electrically connected to the controller 1.

[0030] Furthermore, the icing observation system also includes an air filter 10 and a first flow meter 11, wherein the air filter 10, the first flow meter 11, the water tank 12 and the air inlet 8 are connected in sequence.

[0031] As can be seen from the above description, the accuracy of the calculation can be greatly improved by using the air filter 10 and the first flow meter 11.

[0032] Furthermore, a second flow meter 15, a pressure gauge 16, and an exhaust port 17 are sequentially connected to the outlet of the control valve 14.

[0033] As described above, the difference between the second flow meter 15 and the first flow meter 11 can be used to determine if there is an air leak in the stone; the pressure gauge 16 is used to check whether the discharged pressure meets the requirements.

[0034] A control method for the icing observation system of the aforementioned hydrogen circulation pump 4 includes:

[0035] S102. Start hydrogen circulation pump 4 and run it until the hydrogen circulation pump 4 is stable. Check whether there is any leakage or other fault at each connection of the icing observation system.

[0036] S103. Start the water tank 12 and spray water into the pump head 6 at a rate of 3-6 ml / min for 1-5 minutes; or introduce saturated wet steam into the pump head 6 through the water tank 12 for 7-15 minutes.

[0037] S104, stop water tank 12, and hydrogen circulation pump 4 purges at the highest speed for 2-5 minutes;

[0038] S105. Start the temperature chamber 2 and begin cooling. After the temperature inside the temperature chamber 2 reaches -45 to -30℃, maintain a constant temperature for 6 to 10 hours.

[0039] S106. Observe the internal icing area and icing thickness through the observation port on the hydrogen circulation pump.

[0040] Furthermore, the air leakage fault is determined by obtaining the difference between the second flow meter 15 and the first flow meter 11.

[0041] As can be seen from the above description, the icing observation system and control method of the hydrogen circulation pump 4 can be used for icing observation and design analysis and comparison of the hydrogen circulation pump 4, which greatly reduces development time and improves development efficiency; and provides strong support for the anti-icing optimization and cold start of the hydrogen circulation pump 4.

[0042] Example 1

[0043] An icing observation system for a hydrogen circulation pump 4, the hydrogen circulation pump 4 including a motor 5 and a pump head 6 connected to the motor 5; the pump head 6 is provided with an observation hole 7, an air inlet 8 and an air outlet 9.

[0044] The icing observation system includes a temperature chamber 2, a water tank 12, and a control valve 14. The hydrogen circulation pump 4 is placed inside the temperature chamber 2, and the water tank 12 is connected to the air inlet 8. The control valve 14 is located on the air outlet 9.

[0045] The icing observation system also includes an endoscope, which enters the pump head 6 through the observation hole 7.

[0046] The icing observation system also includes a controller 1, which is electrically connected to the hydrogen circulation pump 4, the temperature chamber 2, the water tank 12, and the control valve 14.

[0047] The temperature sensor 3 is installed inside the temperature chamber 2 and is electrically connected to the controller 1.

[0048] The icing observation system also includes an air filter 10 and a first flow meter 11, wherein the air filter 10, the first flow meter 11, the water tank 12 and the air inlet 8 are connected in sequence.

[0049] The outlet of the control valve 14 is also connected in sequence to a second flow meter 15, a pressure gauge 16, and an exhaust port 17.

[0050] Example 2

[0051] An icing observation system for a hydrogen circulation pump 4 is described, and the similarities with Embodiment 1 will not be repeated here. The observation hole 7 is a transparent, closed structure.

[0052] Example 3

[0053] A control method for an icing observation system of a hydrogen circulation pump 4 according to either Embodiment 1 or Embodiment 2, comprising:

[0054] S102: Start the hydrogen circulation pump 4 and run it for a period of time to stabilize the operation of the circulation pump. Check whether there is any leakage or other faults at each connection of the icing observation system of the hydrogen circulation pump 4.

[0055] S103: Start the nozzle 13 (the water tank 12 has a nozzle 13) to start spraying water at 5ml / min for 2 minutes; or introduce saturated wet steam (the water tank 12 can generate saturated wet steam, which can be achieved by conventional technical means) for 10 minutes.

[0056] S104: Stop water spraying, and the circulating pump will purge at the highest speed for 3 minutes;

[0057] S105: Start incubator 2 and begin cooling. Once the temperature inside incubator 2 reaches -35℃, maintain a constant temperature for 8 hours.

[0058] S106: After the test, observe the internal icing area and icing thickness through the observation port on the hydrogen circulation pump.

[0059] During operation, controller 1 starts hydrogen circulation pump 4. Air is purified by air filter 10, passes through first flow meter 11, and then through water tank 12. It enters pump head 6 of hydrogen circulation pump 4 through inlet 8 and exits through outlet 9. A control valve 14 is installed outside outlet 9 to adjust the circulation pressure of hydrogen circulation pump 4, ensuring the pressure matches the normal operating pressure. A second flow meter 15 is connected after control valve 14, which can be compared with the first flow meter 11 to determine if there is a leak. A pressure gauge 16 is then used to check the pressure of the gas discharged from hydrogen circulation pump 4. The circulated gas is finally discharged through exhaust port 17.

[0060] In the process of using Example 1, the above steps S102-S106 are followed. During the operation of the hydrogen circulation pump 4, several observation holes on the pump head 6 are blocked with plugs. The observation holes are distributed in different parts of the pump head 6 to facilitate the observation of the icing position inside the pump head 6. An endoscope can be used for observation through the observation holes.

[0061] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An icing observation system for a hydrogen circulation pump, the hydrogen circulation pump comprising a motor and a pump head connected to the motor; characterized in that, The pump head is provided with an observation hole, an air inlet, and an air outlet; The icing observation system includes a temperature chamber, a water tank, and a control valve. The hydrogen circulation pump is placed inside the temperature chamber, and the water tank is connected to the gas inlet. The control valve is located at the gas outlet. The observation hole is equipped with a removable plug; The icing observation system also includes an endoscope, which enters the pump head through an observation hole; The icing observation system also includes an air filter and a first flow meter, wherein the air filter, the first flow meter, the water tank and the air inlet are connected in sequence; The outlet of the control valve is also connected in sequence to a second flow meter, a pressure gauge, and an exhaust port.

2. The icing observation system for the hydrogen circulation pump according to claim 1, characterized in that, The observation hole is a transparent, closed structure.

3. The icing observation system for the hydrogen circulation pump according to claim 1, characterized in that, The icing observation system also includes a controller, which is electrically connected to a hydrogen circulation pump, a temperature chamber, a water tank, and a control valve.

4. The icing observation system for the hydrogen circulation pump according to claim 3, characterized in that, The temperature chamber is equipped with a temperature sensor, which is electrically connected to the controller.

5. A control method for an icing observation system of a hydrogen circulation pump according to any one of claims 1-4, characterized in that, include S102. Start the hydrogen circulation pump and run it until the hydrogen circulation pump is stable. Check all connections of the icing observation system for leaks or other faults. S103. Start the water tank and spray water into the pump head at a rate of 3-6 ml / min for 1-5 minutes; or introduce saturated wet steam into the pump head through the water tank for 7-15 minutes. S104. Stop the water tank and purge the hydrogen circulation pump at the highest speed for 2-5 minutes. S105. Start the incubator and begin cooling. Once the temperature inside the incubator reaches -45 to -30°C, maintain a constant temperature for 6 to 10 hours. S106. Observe the internal icing area and icing thickness through the observation port on the hydrogen circulation pump.

6. The control method according to claim 5, characterized in that, Step S102 determines whether there is an air leak or other malfunction by obtaining the difference between the second flow meter and the first flow meter.

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