Device for testing reverse process of hydrogen fuel cell

Abstract

The invention relates to the technical field of hydrogen fuel cells, and discloses a hydrogen fuel cell reverse process testing device, which comprises an equipment body, and four groups of equipment gas inlet pipelines, two groups of gas mixing tanks, a water vapor generator, a cooling water tank, an air heating furnace and a mixed gas heating furnace are sequentially arranged in the equipment body from top to bottom; through cooperation of a galvanic pile heating furnace temperature controller, an equipment gas inlet pipeline, a gas mixing tank, a water vapor generator and a cooling water tank, different gases are respectively introduced into the gas mixing tank for heating by utilizing the equipment gas inlet pipeline, so that the heated gases are mixed with water vapor and then are introduced into a cathode and an anode of a galvanic pile, and the accuracy of a measurement structure is ensured; and the SOEC electrolytic tank can accelerate the electrode reaction rate at high temperature, so that the overpotential of the cathode and the anode is obviously reduced, the energy loss in the electrolysis process is effectively reduced, and the power utilization cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen fuel cells, in particular to a reverse process testing device for hydrogen fuel cells. Background Art

[0002] With the rapid development of renewable energy and the deepening of energy transformation, SOEC technology has shown a wide range of application scenarios. In the hydrogen energy economy, SOEC can be used as an efficient and clean hydrogen preparation technology combined with renewable energy to achieve efficient energy conversion and storage. The normal operation of the SOEC system requires a high temperature environment of 600-1000℃. Its working process is opposite to the principle of fuel cells. In the electrolysis mode, water vapor is electrolyzed by providing electricity through an external power supply; Traditional alkaline solution ammonia production and proton exchange membrane (PEM) hydrogen production technologies consume a lot of electricity, which increases the electricity cost of hydrogen production, and there is a lot of energy loss during the electrolysis process. The hydrogen production efficiency needs to be further improved. Therefore, we need to propose a hydrogen fuel cell reverse process test device. Summary of the invention

[0003] The purpose of the present invention is to provide a hydrogen fuel cell reverse process testing device, which provides stable, high-temperature water vapor, hydrogen, air, nitrogen and electricity supply for electrolysis of water. It can also provide carbon monoxide gas for reversible fuel cells. Carbon monoxide reacts with hydrogen to produce methanol, which is more convenient for storage and transportation, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hydrogen fuel cell reverse process testing device, comprising a device body, wherein the interior of the device body is provided with four groups of equipment air intake pipes, two groups of gas mixing tanks, a steam generator, a cooling water tank, an air heating furnace and a gas mixing heating furnace in sequence from top to bottom, and one side of the device body is provided with a device air intake end valve installed at the lower end of the four groups of equipment air intake pipes, and one side of the device body is provided with a display screen, a stack heating furnace temperature controller, a high-power programmable DC power supply and a multi-function meter, and the four groups of equipment air intake pipes are used to introduce CDA, CO, H2 and N2 respectively, wherein two groups of the equipment air intake pipes are connected to one group of the gas mixing tanks, and the other two groups of the equipment air intake pipes are connected to the other group of the gas mixing tanks.

[0005] Preferably, an emergency stop button, a network port, a power-on indicator light, a buzzer and a conversion switch are provided on one side of the device body, and the power-on indicator light, the buzzer and the conversion switch are arranged in a straight line.

[0006] Preferably, the multi-function meter is arranged below the display screen, the buzzer is arranged directly below the multi-function meter, and the emergency stop button is arranged above the power-on indicator light.

[0007] Preferably, the inner cavity of the device body is provided with an electrical system; The electrical system includes a gas flow monitoring module, a gas temperature monitoring module, a gas humidity monitoring module and a cross-flow pump flow monitoring module.

[0008] Preferably, the inner cavity of the cooling water tank is provided with a coil, and the air outlet end of the coil is provided with a flame arrester, and the outer side of the cooling water tank is provided with a circulating water pump, a finned radiator and a cooling fan for cooling the cooling water.

[0009] Preferably, the inner cavity of the equipment body is provided with a mass flow controller and a CO gas leakage alarm which are connected with the air inlet pipes of the four groups of equipment, and the gas outlet ends of the two groups of gas mixing tanks are provided with solenoid valves.

[0010] Compared with the prior art, the present invention has the following beneficial effects: The present invention mainly cooperates between a temperature controller of a fuel cell heating furnace, an air intake pipe of an equipment, a gas mixing tank, a steam generator and a cooling water tank, and uses the air intake pipe of the equipment to respectively pass different gases into the gas mixing tank for heating, so that the heated gas is mixed with water vapor and then passed into the anode and cathode of the fuel cell, thereby ensuring the accuracy of the measurement structure, and using a SOEC electrolytic cell at high temperature to accelerate the electrode reaction rate, significantly reduce the overpotential of the cathode and the anode, effectively reduce the energy loss of the electrolysis process, and reduce the electricity cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall front structure of the present invention; Figure 2 It is a schematic diagram of the overall rear view structure of the present invention.

[0012] In the figure: 1. Display screen; 2. Emergency stop button; 3. Temperature controller of fuel cell heating furnace; 4. Network port; 5. High-power programmable DC power supply; 6. Valve at the air inlet end of the equipment; 7. Multi-function meter; 8. Power-on indicator light; 9. Buzzer; 10. Switch; 11. Air inlet pipe of the equipment; 12. Mixing tank; 13. Steam generator; 14. Cooling water tank; 15. Air heating furnace; 16. Mixing heating furnace; 17. Electrical system; 18. Equipment body. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] See also Figure 1-2The present invention provides a technical solution: a hydrogen fuel cell reverse process test device, comprising a device body 18, wherein the inside of the device body 18 is sequentially provided with four groups of device air intake pipes 11, two groups of gas mixing tanks 12, a water vapor generator 13, a cooling water tank 14, an air heating furnace 15 and a gas mixing heating furnace 16 from top to bottom, and one side of the device body 18 is provided with a device air intake end valve 6 installed at the lower end of the four groups of device air intake pipes 11, and one side of the device body 18 is provided with a display screen 1, a stack heating furnace temperature controller 3, a high-power programmable DC power supply 5 and a multi-function meter 7, and the four groups of device air intake pipes 11 are respectively used to introduce CDA, CO, H2 and N2, wherein two groups of device air intake pipes 11 are connected to one group of gas mixing tanks 12, and the other two groups of device air intake pipes 11 are connected to the other group of gas mixing tanks 12, and the SOEC electrolyzer can accelerate the electrode reaction rate at high temperature, significantly reduce the overpotential of the cathode and the anode, and effectively reduce the energy loss of the electrolysis process, and the SOEC technology is a prior art and will not be described in detail.

[0015] An emergency stop button 2, a network port 4, a power-on indicator light 8, a buzzer 9 and a conversion switch 10 are provided on one side of the equipment body 18. The power-on indicator light 8, the buzzer 9 and the conversion switch 10 are arranged in a straight line. The emergency stop button 2 can be used to stop the operation of the equipment body 18 as soon as a problem occurs in a certain link, thereby improving safety. At the same time, the buzzer 9 can be used to conveniently remind the equipment body 18 of a fault. The power-on indicator light 8 can be used to conveniently understand the power generation situation. During the test, "electricity-hydrogen-electricity" hydrogen production, hydrogen storage and power generation are formed, thereby improving energy utilization efficiency and promoting the storage and use of renewable energy.

[0016] The multi-function meter 7 is arranged below the display screen 1, the buzzer 9 is arranged directly below the multi-function meter 7, and the emergency stop button 2 is arranged above the power-on indicator light 8. The display screen 1 is convenient for observing various displayed values, thereby facilitating understanding of changes in the values.

[0017] The inner cavity of the device body 18 is provided with an electrical system 17; The electrical system 17 includes a gas flow monitoring module, a gas temperature monitoring module, a gas humidity monitoring module and a flow monitoring module for a horizontal flow pump. The gas flow monitoring module (detected by a gas flow sensor, which can convert the flow rate of the gas into a measurable electrical signal) is used to monitor the gas flow to ensure that the flow rates of various gases are accurate and stable. The gas temperature monitoring module (using a temperature sensor to monitor the temperature change of the gas in real time, based on technologies such as thermocouples, resistance temperature detectors (RTDs) or thermistors, which can convert temperature changes into measurable electrical signals) monitors the real-time temperature of key locations, and automatically adjusts the output of the heating device according to the temperature feedback signal. Output power, ensure that the actual temperature is adjusted slightly within the set temperature range, monitor the gas humidity through the gas humidity monitoring module (the built-in humidity sensor is used to monitor the humidity changes of the gas in real time, based on capacitive, resistive, thermal conduction or optical principles and other technologies, it can convert the humidity changes into measurable electrical signals) to ensure that the steam humidity meets the use requirements, and monitor the flow of the horizontal flow pump through the horizontal flow pump flow monitoring module (the built-in flow sensor is used to monitor the flow changes of the horizontal flow pump in real time, based on the principles of thermal conduction, ultrasound, turbine, etc., it can convert the flow changes into measurable electrical signals) to ensure that the steam generator continuously and stably provides steam.

[0018] The inner cavity of the cooling water tank 14 is provided with a coil, and the air outlet end of the coil is provided with a flame arrester. The outer side of the cooling water tank 14 is provided with a circulating water pump, a finned radiator and a cooling fan for cooling the cooling water. Before starting the equipment body 18, the cooling water tank 14 needs to be filled with softened water or pure water, and the water level height is 280±30mm. During the experiment, the liquid level is observed at any time by operating the main screen to ensure sufficient cooling water.

[0019] The inner cavity of the equipment body 18 is provided with a mass flow controller and a CO gas leakage alarm connected to the four sets of equipment air inlet pipes 11. The gas outlet ends of the two sets of mixing tanks 12 are provided with solenoid valves. The CO gas leakage alarm detects the CO concentration inside the equipment in real time. When the alarm value is reached, a buzzer sounds and the alarm light flashes. When the actual flow of the mass flow controller exceeds ±5% of the set flow, an alarm prompt is triggered.

[0020] When the equipment is used for testing, CDA enters the anode of the fuel cell stack through a manual stop valve, a mass flow controller, a solenoid valve, and an air heating furnace 15; N2 enters the water vapor generator 13 through a manual stop valve and a mass flow controller, and enters the first gas mixing tank 12 together with water vapor. In the gas mixing tank 12, water vapor and N2 are evenly mixed to ensure that the measurement results are more accurate and stable; CO and H2 pass through a manual stop valve and a mass flow controller and merge with the evenly mixed water vapor before entering the second gas mixing tank 12 for full mixing; then enter the cathode of the fuel cell stack through a solenoid valve and a gas mixing heating furnace 16; the cathode exhaust gas discharged after the fuel cell stack reaction enters the coil in the cooling water tank 14 along the pipeline for heat exchange and cooling, and then is discharged to the outdoors.

[0021] The following is the electrolysis reaction process of the stack cathode and stack anode: Cathode reaction: H2O+2e - →H2+O 2- , water gets electrons at the cathode and is reduced to hydrogen and oxygen ions; Anode reaction: O 2- →0.5O2+2e - , oxygen ions lose electrons at the anode and are oxidized into oxygen.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydrogen fuel cell reverse process testing device, comprising a device body (18), characterized in that: The interior of the equipment body (18) is provided with four groups of equipment air intake pipes (11), two groups of gas mixing tanks (12), a steam generator (13), a cooling water tank (14), an air heating furnace (15) and a gas mixing heating furnace (16) in sequence from top to bottom. One side of the equipment body (18) is provided with an equipment air intake end valve (6) installed at the lower end of the four groups of equipment air intake pipes (11). One side of the equipment body (18) is provided with a display screen (1), a temperature controller for the stack heating furnace (3), a high-power programmable DC power supply (5) and a multi-function meter (7). The four groups of equipment air intake pipes (11) are used to introduce CDA, CO, H2 and N2 respectively. Two groups of the equipment air intake pipes (11) are connected to one group of gas mixing tanks (12), and the other two groups of the equipment air intake pipes (11) are connected to the other group of gas mixing tanks (12).

2. The hydrogen fuel cell reverse process testing device according to claim 1, characterized in that: An emergency stop button (2), a network port (4), a power-on indicator light (8), a buzzer (9) and a conversion switch (10) are arranged on one side of the device body (18); the power-on indicator light (8), the buzzer (9) and the conversion switch (10) are arranged in a straight line.

3. The hydrogen fuel cell reverse process testing device according to claim 2, characterized in that: The multifunctional meter (7) is arranged below the display screen (1), the buzzer (9) is arranged directly below the multifunctional meter (7), and the emergency stop button (2) is arranged above the power-on indicator light (8).

4. The hydrogen fuel cell reverse process testing device according to claim 3, characterized in that: The inner cavity of the device body (18) is provided with an electrical system (17); The electrical system (17) comprises a gas flow monitoring module, a gas temperature monitoring module, a gas humidity monitoring module and a cross-flow pump flow monitoring module.

5. The hydrogen fuel cell reverse process testing device according to claim 4, characterized in that: The inner cavity of the cooling water tank (14) is provided with a coil, and the air outlet end of the coil is provided with a flame arrester. The outer side of the cooling water tank (14) is provided with a circulating water pump, a finned radiator and a cooling fan for cooling the cooling water.

6. The hydrogen fuel cell reverse process testing device according to claim 5, characterized in that: The inner cavity of the equipment body (18) is provided with a mass flow controller and a CO gas leakage alarm which are connected to the four sets of equipment air inlet pipes (11), and the gas outlet ends of the two sets of gas mixing tanks (12) are both provided with solenoid valves.

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