CN114739456A - Multi-channel PEM pure water electrolysis hydrogen production testing device and using method thereof - Google Patents

Abstract

The invention discloses a multichannel PEM pure water electrolytic hydrogen production testing device and a using method thereof, the device comprises a rack, a pure water supply mechanism, a hydrogen detection assembly and a power supply assembly, the pure water supply mechanism comprises a pure water supply pipeline and a pure water cooling assembly, the pure water supply pipeline comprises a water tank, a water supplementing electromagnetic valve, a water supply pump set with a plurality of water supply channels, a plurality of pure water supply pipes and a plurality of pure water return pipes, the hydrogen detection assembly comprises a hydrogen-water separator and a drier which are arranged in the rack, an intelligent dew point instrument arranged on an instrument display area, a high-voltage mass flow meter connected with a flow display instrument, a plurality of hydrogen collecting joints arranged on an operation area, the power supply assembly comprises a power supply source arranged on the rack, an electrical conductor connected with the power supply source, a plurality of pairs of power supply joints arranged on the operation area, and the water flow of the plurality of water supply channels and the serial-parallel combination of the power supply source and the control of the water flow of the plurality of water supply channels, and meanwhile, the PEM electrolytic cells are tested under different currents, voltages and flows, so that the testing efficiency is improved.

Description

A kind of multi-channel PEM pure water electrolysis hydrogen production test device and using method

technical field

The invention relates to the technical field of hydrogen production by electrolysis of water, in particular to a multi-channel PEM pure water electrolysis hydrogen production test device and a method for using the same.

Background technique

Hydrogen production from PEM pure water has the advantages of stability, cleanliness and no noise. It is the technical commanding height of future power energy, and is also a research hotspot of domestic and foreign universities, scientific research institutions and multinational enterprises. The technical level of the test platform of the PEM electrolysis hydrogen production unit plays a crucial role in the research and development of the electrolytic cell in the PEM electrolysis of pure water for hydrogen production. However, the existing test benches in the market seldom or can only meet the performance test of a single electrolyzer, and the test is single and unstable. Therefore, it is very important to develop a stable and efficient PEM electrolysis pure water hydrogen production unit test device.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a multi-channel PEM pure water electrolysis hydrogen production test device and use method, so as to solve one or more technical problems existing in the prior art, and at least provide a beneficial choice or create conditions.

The technical solutions adopted to solve the above technical problems:

First of all, the present invention provides a multi-channel PEM pure water electrolysis hydrogen production test device, which includes: a rack, a pure water supply mechanism, a hydrogen detection component and a power supply component. The upper control panel, the test table is evenly distributed with a plurality of clamping brackets for clamping the PEM electrolytic cell, the control panel includes an instrument display area arranged in the upper part and an operation area arranged in the lower part, and the instrument display area is There is a flow indicator in the area; the pure water supply mechanism includes a pure water supply pipeline and a pure water cooling component, and the pure water supply pipeline includes a water tank installed in the rack, a water replenishment solenoid valve connected to the upper side of the water tank, and a set of There is a water supply pump group, a plurality of pure water supply pipes, and a plurality of pure water return pipes with separate water supply channels. The water supply pump group is provided with a multi-channel pressure controller arranged in the instrument display area. In the water tank A heating component and a third sensor are arranged inside, the water inlet of the pure water cooling component is connected to the water tank, the water outlet of the pure water cooling component is connected to the water inlet ends of a plurality of water supply channels, and the operation area is provided with A plurality of pure water water supply joints respectively connected with the water outlet ends of the plurality of water supply channels, and a plurality of pure water return water joints connected with the water tank, and a control water valve is arranged between each pure water supply joint and the water supply channel. The control water valve is arranged in the operation area, one end of the pure water supply pipe is connected with the pure water water supply joint one by one, the pure water return pipe is connected with the pure water return joint one by one, and a corresponding pair of all The other ends of the pure water supply pipe and the pure water return pipe are detachably connected to the water inlet and outlet of the PEM electrolytic cell; the hydrogen detection component includes a hydrogen water separator and a dryer installed in the rack, installed in the instrument display area The intelligent dew point meter on the device, the high-pressure mass flowmeter connected to the flow indicator, and a plurality of hydrogen collector joints installed in the operation area, the hydrogen collector joints are connected with a hydrogen collector pipe, and the hydrogen collector pipe is connected to the PEM The hydrogen port of the electrolyzer is detachably connected, and the inner ends of the plurality of hydrogen current collecting joints are connected to the inlet of the hydrogen water separator, and between each of the hydrogen current collecting joints and the inlet end of the hydrogen water separator in sequence A second sensor and a one-way valve are provided, the outlet end of the hydrogen water separator is connected to the inlet end of the dryer, and a test bench is connected between the outlet end of the hydrogen water separator and the dryer. The hydrogen pressure gauge on the front side, the exhaust end of the dryer is connected to the intelligent dew point meter and the high pressure mass flowmeter respectively through the three-way joint, a dew point solenoid valve is set between the intelligent dew point meter and the dryer, A flowmeter solenoid valve is arranged between the high-pressure mass flowmeter and the dryer; the power supply assembly includes a power supply installed on the rack, a conductivity meter connected to the power supply, and multiple pairs of power supply connectors arranged in the operation area. The connectors are connected with power supply wires, and each pair of the power supply connectors is detachably connected to the two electrodes of the PEM electrolytic cell through two power supply wires. ;

A plurality of pairs of power supply connectors, a plurality of hydrogen current collecting connectors, a plurality of pure water supply connectors, a plurality of pure water return water connectors and a plurality of control water valves are arranged in a one-to-one correspondence.

The beneficial effect of the multi-channel PEM pure water electrolysis hydrogen production test device is: when in use, a plurality of PEM electrolytic cells can be clamped on a plurality of clamping brackets, and then a corresponding pair of the pure water water supply pipes and the The other end of the pure water return pipe is connected to the inlet and outlet of the PEM electrolyzer, the corresponding hydrogen collector is connected to the hydrogen port of the PEM electrolyzer, and the corresponding pair of the power supply connectors are connected to the PEM electrolyzer through two power supply wires. The two electrodes of the tank are connected, the pure water in the water tank is heated and then cooled by the pure water cooling component, so that the pure water from the pure water cooling component reaches the working temperature, and the multi-channel pressure controller is used to control each water supply pump group. The pure water flow and pressure of the water supply channel, open several corresponding control water valves, and the conductivity meter controls the power supply to supply different currents and voltages to each PEM electrolytic cell, so that multiple PEM electrolytic cells can be electrolyzed under different working conditions. Water and pure water come out from the PEM electrolyzer and return to the water tank. After the hydrogen from the PEM electrolyzer passes through the second sensor and the one-way valve, it enters the hydrogen-water separator and dryer. The hydrogen-water separator separates hydrogen and water, and the dryer For hydrogen drying, the dried hydrogen is divided into two branches. The hydrogen in the first branch passes through the dew point solenoid valve, the intelligent dew point meter, and the intelligent dew point meter to detect the water content in the hydrogen to achieve the purpose of measuring the purity of the hydrogen. The hydrogen passes through the flowmeter solenoid valve, high pressure mass flowmeter in turn, and the high pressure mass flowmeter can test the hydrogen production rate. The test of PEM electrolyzer under different currents, voltages and flow rates improves the test efficiency, and the instrument display area and the operation area on the control panel integrate the display and operation area, making the operation more convenient and intuitive.

As a further improvement of the above technical solution, a pressure reducing valve is arranged between the intelligent dew point meter and the dew point solenoid valve, and the pressure reducing valve is arranged on the front side of the test table, between the hydrogen pressure gauge and the dryer An overpressure switch, a pressure tracker, a back pressure valve and an output solenoid valve are connected in sequence, and the back pressure valve is arranged on the front side of the test table. In order to ensure that the hydrogen has a certain pressure, an overpressure switch is set. When the pressure is set, the overpressure switch is controlled to open, and the hydrogen flows through the pressure tracker, the back pressure valve and the output solenoid valve in turn and enters the dryer.

As a further improvement of the above technical solution, an emptying pipeline is connected between the back pressure valve and the output solenoid valve, and the emptying pipeline is sequentially connected with an emptying solenoid valve, an emptying manual valve, and an emptying sensor.

If the hydrogen pressure is too high or the amount of hydrogen is too large, the overpressure switch and the emptying solenoid valve are opened, and the hydrogen is discharged through the emptying pipeline.

As a further improvement of the above technical solution, the water outlet of the hydrogen water separator is connected to the water tank through a return water pipeline, and a return water solenoid valve is installed on the return water pipeline.

When the water in the hydrogen water separator reaches the set value, the return water solenoid valve is controlled to open, and the water returns to the water tank.

As a further improvement of the above technical solution, the hydrogen-water separator is a multi-stage hydrogen-water separator structure, and the dryer includes a plurality of drying pipes connected in sequence.

The scheme adopts the structure of a multi-stage hydrogen-water separator to improve the effect of hydrogen-water separation, and sets up multiple drying tubes to improve the drying effect.

As a further improvement of the above technical solution, a water quality and water temperature detector is arranged between the water supply pump group and the pure water cooling assembly, and the outlet of the water supply pump group is connected with a drainage pipeline connected to a plurality of water supply channels. The pipeline is equipped with a drain solenoid valve.

In this scheme, a water quality and temperature detector is set up to monitor the water quality of pure water. If the water quality is unqualified, the drainage solenoid valve will be opened, and the water supply pump group will discharge the water to the drainage pipeline. After the water quality is qualified, the corresponding control water valve will be opened.

As a further improvement of the above technical solution, a drain port is provided at the bottom of the water tank, the drain port is connected to a drain pipeline through a drain valve, and the third sensor includes a liquid level sensor and a temperature sensor.

In this scheme, if the water level of the water tank is higher than the upper limit of the set value, the drain valve will be opened, and if it is lower than the lower limit of the set value, the water replenishment solenoid valve will be opened.

As a further improvement of the above technical solution, the pure water cooling assembly includes a buffer tank, a heat exchanger, a chiller and a circulating pump that are connected in a closed loop in sequence, and the water inlet and outlet of the heat exchanger are respectively connected to the water tank and a plurality of water supply channels. The water inlet end of the pump is connected, and the water supply pump group is a multi-channel peristaltic pump.

This scheme is used for cooling with pure water through a refrigerant cooling circuit formed by a buffer tank, a heat exchanger, a chiller and a circulating pump.

As a further improvement of the above technical solution, the rack is a case structure, an upper installation chamber and a lower installation chamber communicated with each other are arranged in the rack, and a cooling fan is arranged on the top of the rack.

The cooling fan mainly dissipates heat inside the rack to avoid overheating. The installation upper chamber and the installation lower chamber are used to install various components.

In addition, the present invention also provides a method of using a multi-channel PEM pure water electrolysis hydrogen production test device. The multi-channel PEM pure water electrolysis hydrogen production test device further includes a PLC control unit, and the PLC control unit is controlled and connected to each electrical element, Specific steps are as follows:

S1, the multiple PEM electrolytic cells to be tested are clamped on the clamping bracket in one-to-one correspondence, and the other ends of the multiple pairs of the pure water supply pipe and the pure water return pipe are connected to the inlet and outlet of the multiple PEM electrolytic cells. The nozzles are well connected, and a plurality of the hydrogen gas collectors are well connected with the hydrogen gas ports of a plurality of PEM electrolytic cells, and a plurality of pairs of the power supply connectors are well connected with the two electrodes of the PEM electrolytic cells through power supply wires;

S2. The tap water is connected to the water replenishment solenoid valve through a small pure water machine, and supplies water to the water tank, the heating component heats the water in the water tank, and the third sensor monitors the water level and temperature of the water tank;

S3. After the pure water in the water tank is heated to the set temperature, it is cooled by the pure water cooling component, so that the pure water from the pure water cooling component reaches the working temperature;

S4. The water quality and temperature detector simply detects the pure water cooling components. If the detected water quality is unqualified, the drain solenoid valve is opened, the water supply pump group is started, the unqualified pure water is drained, and the water tank is replenished, heated and cooled. , so that the water quality and water temperature detector is qualified to detect the water quality.

S5. Open each control water valve, start the water supply pump group, and the multi-channel pressure controller controls the water flow and pressure of multiple water supply channels. After the water enters the PEM electrolyzer to meet the work requirements of electrolysis and hydrogen production, the PLC control unit controls the series of the power supply. Parallel combination, so that the current and voltage applied to each PEM electrolytic cell are different, and finally the water flows back to the water tank;

S6. After the hydrogen generated by the electrolysis of the PEM electrolyzer passes through the second sensor and the one-way valve, it enters the hydrogen-water separator and the dryer. The hydrogen-water separator separates the hydrogen and water, and the dryer dries the hydrogen. There are two branches. The hydrogen in the branch one passes through the dew point solenoid valve, the intelligent dew point meter, and the intelligent dew point meter detects the water content in the hydrogen to achieve the purpose of measuring the purity of the hydrogen. The hydrogen in the branch two passes through the flowmeter solenoid valve, the high pressure Mass flow meter, high pressure mass flow meter can test the hydrogen production rate.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments;

Fig. 1 is the channel PEM pure water electrolysis hydrogen production test device provided by the present invention, the structural representation under one of the viewing angles of an embodiment thereof;

2 is a schematic structural diagram of the channel PEM pure water electrolysis hydrogen production test device provided by the present invention, an embodiment of which is from another perspective;

3 is a side view of an embodiment of the channel PEM pure water electrolysis hydrogen production test device provided by the present invention;

4 is a control flow chart of an embodiment of the channel PEM pure water electrolysis hydrogen production test device provided by the present invention.

Detailed ways

This part will describe the specific embodiments of the present invention in detail, and the preferred embodiments of the present invention are shown in the accompanying drawings. Each technical feature and overall technical solution of the invention should not be construed as limiting the protection scope of the invention.

In the description of the present invention, it should be understood that the azimuth description, such as the azimuth or position relationship indicated by up, down, front, rear, left, right, etc., is based on the azimuth or position relationship shown in the drawings, only In order to facilitate the description of the present invention and simplify the description, it is not indicated or implied that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, if there is a word description such as "several", its meaning is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including this number, above, below , within, etc. are understood to include this number.

In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, connection should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

1 to 4, the multi-channel PEM pure water electrolysis hydrogen production test device of the present invention makes the following embodiments:

The multi-channel PEM pure water electrolysis hydrogen production test device in this embodiment includes a rack 30, a pure water supply mechanism, a hydrogen detection component and a power supply component.

The front side of the rack 30 is provided with a test table 32 and a control panel 33 arranged on the upper part of the rear side of the test table 32. The test table 32 is evenly distributed with a plurality of clamping brackets for clamping the PEM electrolytic cell 10. The control panel 33 includes an instrument display area arranged in the upper part and an operation area arranged in the lower part. The instrument display area is provided with a flow indicator 27 connected to each flow sensor, and the rack 30 is a chassis structure. The rack 30 is provided with an upper installation chamber and a lower installation chamber that are connected to each other, and a cooling fan 31 is arranged on the top of the rack 30. The cooling fan 31 mainly dissipates heat inside the rack 30 to avoid overheating. The installation upper chamber and the installation lower chamber are used to install various components.

The pure water supply mechanism includes a pure water supply pipeline and a pure water cooling component. The pure water supply pipeline includes a water tank 1 installed in the rack 30 , a water replenishment solenoid valve 2 connected to the upper side of the water tank 1 , and a A water supply pump group, a plurality of pure water supply pipes 34, and a plurality of pure water return pipes 35 of a plurality of separate water supply channels, the water supply pump group is provided with a multi-channel pressure controller 29 arranged in the instrument display area, and the water supply The water pump group is a multi-channel peristaltic pump 8. The multi-channel pressure controller 29 is used to control the driving force of the pump head of each water supply channel. A heating assembly and a third sensor are arranged in the water tank 1. A water quality and temperature detector 44 is arranged between the water cooling components. The outlet of the water supply pump group is connected with a drainage pipeline connected to a plurality of water supply channels. The drainage pipeline is installed with a drainage solenoid valve 3. The bottom is provided with a drain port, the drain port is connected to the drain pipeline through a drain valve 45, and the third sensor includes a liquid level sensor and a temperature sensor. In this embodiment, a water quality and temperature detector 44 is set to monitor the water quality of pure water, If the water quality is unqualified, the drain solenoid valve 3 is opened, and the water supply pump group will discharge the water to the drainage pipeline. After the water quality is qualified, the corresponding control water valve 9 is opened. If the water level of the water tank 1 is higher than the upper limit of the set value, the drain valve 45 is opened. , and below the lower limit of the set value, the water replenishment solenoid valve 2 is opened, and the water replenishment solenoid valve 2 is connected to a small pure water machine.

The pure water cooling assembly of this embodiment includes a buffer tank 5, a heat exchanger 4, a chiller 7 and a circulating pump 6 that are sequentially closed-loop connected. The water inlet end of the water supply channel is connected, and is cooled with pure water through a refrigerant cooling circuit formed by a buffer tank 5, a heat exchanger 4, a chiller 7 and a circulating pump 6.

The operation area is provided with a plurality of pure water water supply joints respectively connected with the outlet ends of the plurality of water supply channels, and a plurality of pure water return water joints connected with the water tank 1, between each pure water water supply joint and the water supply channel A control water valve 9 is provided, the control water valve 9 is arranged in the operation area, one end of the pure water supply pipe 34 is connected to the pure water supply joint one by one, and the pure water return pipe 35 is connected to the pure water return pipe 35. The water joints are connected in a one-to-one correspondence, and the other ends of the corresponding pair of the pure water supply pipes 34 and the pure water return pipes 35 are detachably connected to the water inlet and outlet of the PEM electrolytic cell 10 .

In use, a plurality of PEM electrolytic cells 10 are clamped on a plurality of clamping brackets, and then the other ends of the corresponding pair of the pure water supply pipe 34 and the pure water return pipe 35 are connected to the inlet of the PEM electrolytic cell 10. , Water outlet connection.

The hydrogen detection assembly includes a hydrogen water separator 13 and a dryer installed in the rack 30, an intelligent dew point meter 24 installed on the instrument display area, a high-pressure mass flow meter 26 connected to the flow display instrument 27, and a device installed in the operation area. A plurality of hydrogen gas collecting joints, the hydrogen gas collecting joints are connected with a hydrogen gas collecting pipe 36, the hydrogen gas collecting pipe 36 is detachably connected with the hydrogen port of the PEM electrolytic cell 10, and the inner parts of the plurality of the hydrogen gas collecting joints are connected. The terminal is connected to the inlet of the hydrogen water separator 13, and a second sensor 11 and a one-way valve 12 are sequentially arranged between each of the hydrogen current collecting joints and the inlet end of the hydrogen water separator 13. The hydrogen water separator The outlet end of the device 13 is connected to the inlet end of the dryer, and a hydrogen pressure gauge 15 is connected between the outlet end of the hydrogen water separator 13 and the dryer, and a hydrogen pressure gauge 15 is arranged on the front side of the test table 32. The dryer The exhaust end of the air conditioner is connected to the intelligent dew point meter 24 and the high pressure mass flow meter 26 respectively through the three-way joint, a dew point solenoid valve 22 is arranged between the intelligent dew point meter 24 and the dryer, and the high pressure mass flow meter 26 is connected to the dryer. A flowmeter solenoid valve 25 is provided between the dryers.

Further, a pressure reducing valve 23 is arranged between the intelligent dew point meter 24 and the dew point solenoid valve 22, and the pressure reducing valve 23 is arranged on the front side of the test table 32, between the hydrogen pressure gauge 15 and the dryer. The overpressure switch 16, the pressure tracker 17, the back pressure valve 18 and the output solenoid valve 19 are connected in sequence, and the back pressure valve 18 is arranged on the front side of the test table 32. When the pressure switch 16 is set, the overpressure switch 16 is controlled to open, and the hydrogen flows through the pressure tracker 17, the back pressure valve 18 and the output solenoid valve 19 in sequence and then enters the dryer.

In addition, an emptying pipeline 39 is connected between the back pressure valve 18 and the output solenoid valve 19, and the emptying pipeline 39 is sequentially connected with the emptying solenoid valve 21, the emptying manual valve 40, and the emptying sensor 41. , if the hydrogen pressure is too high or the amount of hydrogen is too large, the overpressure switch 16 and the emptying solenoid valve 21 are opened, and the hydrogen is discharged through the emptying pipeline 39 .

In addition, the water outlet of the hydrogen water separator 13 is connected to the water tank 1 through the return water pipeline 42, and the return water pipeline 42 is equipped with a return water solenoid valve 43. When the water in the hydrogen water separator 13 reaches the set value When , the return water solenoid valve 43 is controlled to open, and the water returns to the water tank 1 .

The hydrogen-water separator 13 in this embodiment is a multi-stage hydrogen-water separator structure, and the dryer includes a plurality of drying pipes 20 connected in sequence, and adopts the structure of a multi-stage hydrogen-water separator to improve the separation efficiency of hydrogen-water. effect, and a plurality of drying pipes 20 are provided to improve the drying effect.

When in use, the corresponding hydrogen manifold 36 is connected to the hydrogen port of the PEM electrolytic cell 10 .

The power supply assembly includes a power supply 37 installed on the rack 30, a conductivity meter 28 connected to the power supply 37, and a plurality of pairs of power supply connectors 38 arranged in the operating area. The power supply connectors 38 are connected with power supply wires. The power supply connector 38 is detachably connected to the two electrodes of the PEM electrolytic cell 10 through two power supply wires, the conductivity meter 28 is arranged in the instrument display area, and the power supply 37 supplies power to multiple pairs of power supply connectors 38. A corresponding pair of the power supply connectors 38 are connected to the two electrodes of the PEM electrolytic cell 10 through two power supply wires.

This embodiment also provides a method of using a multi-channel PEM pure water electrolysis hydrogen production test device. The multi-channel PEM pure water electrolysis hydrogen production test device further includes a PLC control unit, and the PLC control unit is controlled and connected to each electrical element. Proceed as follows:

S1, the multiple PEM electrolytic cells 10 to be tested are clamped on the clamping bracket in one-to-one correspondence, and the other ends of the multiple pairs of the pure water supply pipes 34 and the pure water return pipes 35 are connected with the multiple PEM electrolytic cells 10. The inlet and outlet are connected well, and a plurality of the hydrogen collectors 36 are connected with the hydrogen ports of a plurality of PEM electrolytic cells 10, and a plurality of pairs of the power supply connectors 38 are connected to the two electrodes of the PEM electrolytic cell 10 through power supply wires. connected;

S2. The tap water is connected to the water replenishment solenoid valve 2 through a small pure water machine, and supplies water to the water tank 1, the heating component heats the water in the water tank 1, and the third sensor monitors the water level and temperature of the water tank 1;

S3. After the pure water in the water tank 1 is heated to the set temperature, it is cooled by the pure water cooling component, so that the pure water from the pure water cooling component reaches the working temperature;

S4. The water quality and temperature detector 44 simply detects the pure water cooling components. If the detected water quality is unqualified, the drain solenoid valve 3 is opened, the water supply pump group is started, and the unqualified pure water is drained, and then the water tank 1 is replenished, Heating and cooling make the water quality detected by the water quality and temperature detector 44 qualified.

S5. Open each control water valve 9, start the water supply pump group, and the multi-channel pressure controller 29 controls the water flow and pressure of multiple water supply channels. After the water enters the PEM electrolytic cell 10 to meet the work requirements of electrolysis and hydrogen production, the PLC control unit controls the power supply The series-parallel combination of the power supply 37 makes the current and voltage applied to each PEM electrolytic cell 10 different, and finally the water flows back to the water tank 1;

S6. After the hydrogen generated by the electrolysis of the PEM electrolytic cell 10 passes through the second sensor 11 and the one-way valve 12, it enters the hydrogen water separator 13 and the drier. The hydrogen water separator 13 separates the hydrogen and water, and the drier dries the hydrogen. The dried hydrogen is divided into two branches. The hydrogen in the first branch passes through the dew point solenoid valve 22, the intelligent dew point meter 24, and the intelligent dew point meter 24 to detect the water content in the hydrogen to achieve the purpose of measuring the purity of the hydrogen. Through the flowmeter solenoid valve 25 and the high pressure mass flowmeter 26 in turn, the high pressure mass flowmeter 26 can test the hydrogen production rate.

In this embodiment, by controlling the series-parallel combination of the power supply 37 and the water flow rate of the water supply pump groups of multiple water supply channels, multiple PEM electrolytic cells 10 can be tested under different currents, voltages and flow rates at the same time, thereby improving the test efficiency. In addition, the instrument display area and the operation area on the control panel 33 are integrated with areas for display and operation, which is more convenient and intuitive to operate.

The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments, and those skilled in the art can also make various equivalent modifications or substitutions without departing from the spirit of the present invention, These equivalent modifications or substitutions are all included within the scope defined by the claims of the present application.

Claims (10)

1. a multi-channel PEM pure water electrolysis hydrogen production test device, is characterized in that: it comprises: The rack (30) is provided with a test table (32) on the front side, and a control panel (33) arranged on the upper part of the rear side of the test table (32), the test table (32) is evenly distributed with a plurality of clamps for clamping The clamping bracket of the PEM electrolytic cell (10), the control panel (33) includes an instrument display area arranged in the upper part and an operation area arranged in the lower part, and the instrument display area is provided with a flow indicator (27); A pure water supply mechanism, comprising a pure water supply pipeline and a pure water cooling component, the pure water supply pipeline comprising a water tank (1) installed in the rack (30), and a water replenishment connected to the upper side of the water tank (1) A solenoid valve (2), a water supply pump group provided with a plurality of mutually independent water supply channels, a plurality of pure water supply pipes (34), and a plurality of pure water return pipes (35), the water supply pump group is provided with a A multi-channel pressure controller (29) in the display area, a heating assembly and a third sensor are arranged in the water tank (1), the water inlet of the pure water cooling assembly is connected to the water tank (1), and the pure water cooling The water outlet of the assembly is connected with the water inlet ends of the plurality of water supply channels, and the operation area is provided with a plurality of pure water water supply joints respectively connected with the water outlet ends of the plurality of water supply channels, and a plurality of pure water water supply joints connected with the water tank (1). A water return joint, a control water valve (9) is arranged between each pure water supply joint and the water supply channel, the control water valve (9) is arranged in the operation area, and one end of the pure water supply pipe (34) One-to-one connection with the pure water supply joint, the pure water return pipe (35) is connected with the pure water return joint in one-to-one correspondence, and a corresponding pair of the pure water supply pipe (34) and the pure water return pipe The other end of (35) is detachably connected with the water inlet and outlet of the PEM electrolytic cell (10); A hydrogen gas detection assembly, which includes a hydrogen water separator (13) and a dryer installed in a rack (30), an intelligent dew point meter (24) installed on the instrument display area, and a high pressure connected to the flow display instrument (27) A mass flow meter (26), a plurality of hydrogen collecting joints installed in the operation area, the hydrogen collecting joints are connected with a hydrogen collecting pipe (36), and the hydrogen collecting pipe (36) is connected to the PEM electrolyzer (10). The hydrogen port of the ) is detachably connected, and the inner ends of a plurality of the hydrogen collecting joints are connected to the inlet of the hydrogen water separator (13), and each of the hydrogen collecting joints is connected to the inlet of the hydrogen water separator (13). A second sensor (11) and a one-way valve (12) are arranged in sequence between the gas ends, the gas outlet end of the hydrogen water separator (13) is connected to the inlet end of the dryer, and the hydrogen water separator (13) is connected to the gas inlet end of the dryer. 13) A hydrogen pressure gauge (15) arranged on the front side of the test table (32) is connected between the outlet end of the dryer and the dryer, and the exhaust end of the dryer is respectively connected to the intelligent dew point meter (24) through a tee joint. , a high pressure mass flowmeter (26) is connected, a dew point solenoid valve (22) is arranged between the intelligent dew point meter (24) and the dryer, and a dew point solenoid valve (22) is arranged between the high pressure mass flowmeter (26) and the dryer Flowmeter solenoid valve (25); A power supply assembly, comprising a power supply (37) installed on a rack (30), a conductivity meter (28) connected to the power supply (37), and a plurality of pairs of power supply connectors (38) arranged in the operating area, the power supply The connectors (38) are connected with power supply wires, and each pair of the power supply connectors (38) is detachably connected to the two electrodes of the PEM electrolytic cell (10) through two power supply wires, and the conductivity meter (28) is arranged on the meter display area, the power supply (37) supplies power to multiple pairs of power supply connectors (38); A plurality of pairs of power supply joints (38), a plurality of hydrogen current collecting joints, a plurality of pure water supply joints, a plurality of pure water return water joints and a plurality of control water valves (9) are arranged in a one-to-one correspondence. 2. a kind of multi-channel PEM pure water electrolysis hydrogen production test device according to claim 1, It is characterized by: A pressure reducing valve (23) is arranged between the intelligent dew point meter (24) and the dew point solenoid valve (22). The pressure reducing valve (23) is arranged on the front side of the test table (32). An overpressure switch (16), a pressure tracker (17), a back pressure valve (18) and an output solenoid valve (19) are sequentially connected between the pressure gauge (15) and the dryer, and the back pressure valve (18) is provided with on the front side of the test table (32). 3. a kind of multi-channel PEM pure water electrolysis hydrogen production test device according to claim 2, It is characterized by: An emptying pipeline (39) is connected between the back pressure valve (18) and the output solenoid valve (19), and the emptying pipeline (39) is sequentially connected with an emptying solenoid valve (21), an emptying Manual valve (40), drain sensor (41). 4. a kind of multi-channel PEM pure water electrolysis hydrogen production test device according to claim 1, It is characterized by: The water outlet of the hydrogen water separator (13) is connected to the water tank (1) through a water return pipeline (42), and a return water solenoid valve (43) is installed on the return water pipeline (42). 5. a kind of multi-channel PEM pure water electrolysis hydrogen production test device according to claim 1, It is characterized by: The hydrogen water separator (13) is a multi-stage hydrogen water separator structure, and the dryer comprises a plurality of drying pipes (20) connected in sequence. 6. a kind of multi-channel PEM pure water electrolysis hydrogen production test device according to claim 1, It is characterized by: A water quality and temperature detector (44) is arranged between the water supply pump group and the pure water cooling assembly, the outlet of the water supply pump group is connected with a drainage pipeline connected with a plurality of water supply channels, and the drainage pipeline is installed with a drainage pipe Solenoid valve (3). 7. a kind of multi-channel PEM pure water electrolysis hydrogen production test device according to claim 6, It is characterized by: The bottom of the water tank (1) is provided with a drain port, the drain port is connected to a drain pipeline through a drain valve (45), and the third sensor includes a liquid level sensor and a temperature sensor. 8. a kind of multi-channel PEM pure water electrolysis hydrogen production test device according to claim 1, It is characterized by: The pure water cooling assembly comprises a buffer tank (5), a heat exchanger (4), a chiller (7) and a circulating pump (6) which are sequentially closed-loop connected, and the water inlet and outlet of the heat exchanger (4) are respectively It is connected with the water tank (1) and the water inlet ends of the plurality of water supply channels, and the water supply pump group is a multi-channel peristaltic pump (8). 9. a kind of multi-channel PEM pure water electrolysis hydrogen production test device according to claim 1, It is characterized by: The rack (30) is a case structure, an upper installation chamber and a lower installation chamber that communicate with each other are arranged in the rack (30), and a cooling fan ( 31). 10. A using method of the multi-channel PEM pure water electrolysis hydrogen production test device according to any one of claims 1 to 9, it is characterized in that: also comprise PLC control unit, described PLC control unit is connected with each electric element control, A water quality and temperature detector (44) is arranged between the water supply pump group and the pure water cooling assembly, the outlet of the water supply pump group is connected with a drainage pipeline connected with a plurality of water supply channels, and the drainage pipeline is installed with a drainage pipe Solenoid valve (3), the specific steps are as follows: S1. Clamp the multiple PEM electrolytic cells (10) to be tested on the clamping bracket in one-to-one correspondence, and connect the other ends of the multiple pairs of the pure water supply pipes (34) and the pure water return pipes (35) with The water inlets and water outlets of a plurality of PEM electrolytic cells (10) are well connected, and a plurality of the hydrogen gas collecting pipes (36) are well connected with the hydrogen gas ports of the plurality of PEM electrolytic cells (10), and a plurality of pairs of the power supply connectors are connected. (38) well connected with the two electrodes of the PEM electrolytic cell (10) through the power supply wire; S2. The tap water is connected to the water replenishment solenoid valve (2) through a small pure water machine, and supplies water to the water tank (1), the heating component heats the water in the water tank (1), and the third sensor monitors the water level of the water tank (1) and temperature; S3. After the pure water in the water tank (1) is heated to the set temperature, it is cooled by the pure water cooling component, so that the pure water from the pure water cooling component reaches the working temperature; S4. The water quality and water temperature detector (44) simply detects the pure water cooling component. If the detected water quality is unqualified, the drain solenoid valve (3) is opened, the water supply pump group is started, and the unqualified pure water is drained, and then the water tank is drained. (1) Water replenishment, heating and cooling are carried out, so that the water quality detected by the water quality and temperature detector (44) is qualified. S5. Open each control water valve (9), start the water supply pump group, and the multi-channel pressure controller (29) controls the water flow and pressure of multiple water supply channels. After the water enters the PEM electrolytic cell (10) to meet the work requirements of electrolysis for hydrogen production , the PLC control unit controls the series-parallel combination of the power supply (37), so that the current and voltage applied to each PEM electrolytic cell (10) are different, and finally the water flows back to the water tank (1); S6. After the hydrogen generated by the electrolysis of the PEM electrolyzer (10) passes through the second sensor (11) and the check valve (12), it enters the hydrogen water separator (13) and the dryer, and the hydrogen water separator (13) separates the hydrogen and The water is separated, the dryer dries the hydrogen, and the dried hydrogen is divided into two branches. The hydrogen in the first branch passes through the dew point solenoid valve (22), the intelligent dew point meter (24), and the intelligent dew point meter (24) to detect the hydrogen. In order to measure the hydrogen purity, the hydrogen in the second branch passes through the flowmeter solenoid valve (25), the high pressure mass flowmeter (26) in turn, and the high pressure mass flowmeter (26) can test the hydrogen production rate.

Images