CN114739456B - Multichannel PEM pure water electrolysis hydrogen production testing device and application method - Google Patents

Abstract

The application discloses a multichannel PEM pure water electrolytic hydrogen production testing device and a using method thereof, wherein the multichannel PEM pure water electrolytic hydrogen production testing device comprises a frame, 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 and filling valve, a plurality of water supply channel water supply pump sets, 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 dryer which are arranged in the frame, an intelligent dew point instrument arranged on an instrument display area, a high-pressure mass flowmeter connected with a flow indicator, a plurality of hydrogen collecting joints arranged on an operation area, the power supply assembly comprises a power supply arranged on the frame, a conductivity instrument connected with the power supply, and a plurality of pairs of power supply joints arranged on the operation area, and the testing efficiency is improved by controlling the serial-parallel combination of the power supply and the water flow of the plurality of the water supply channels and the testing of PEM electrolytic tanks under different currents, voltages and flow rates.

Description

A 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 use method.

Background technique

PEM pure water hydrogen production has the advantages of stability, cleanliness and no noise. It is the commanding height of future power energy technology, and it is also a research hotspot for universities, scientific research institutions and multinational companies at home and abroad. In all aspects of the R&D and development of electrolyzers in the PEM electrolysis of pure water for hydrogen production, the technical level of the test platform for the PEM electrolysis hydrogen production unit plays a vital role. However, the existing test benches in the market are seldom or only capable of testing the performance 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.

Contents of the invention

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

The technical solution adopted for solving the above-mentioned technical problems:

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

Multiple pairs of power supply joints, multiple hydrogen gas collecting joints, multiple pure water supply joints, multiple pure water return joints and multiple control water valves are arranged in one-to-one correspondence.

The beneficial effect of the multi-channel PEM pure water electrolysis hydrogen production test device is: when in use, multiple PEM electrolytic cells can be clamped on multiple clamping brackets, and then the corresponding pair of pure water supply pipes and The other end of the pure water return pipe is connected to the water inlet and outlet of the PEM electrolyzer, and the corresponding hydrogen manifold is connected to the hydrogen port of the PEM electrolyzer, and the corresponding pair of 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 of the water supply pumps. The pure water flow and pressure of the water supply channel, open the corresponding control water valves, the conductivity meter controls the power supply to supply different currents and voltages to each PEM electrolyzer, so that multiple PEM electrolyzers can perform electrolysis under different working conditions Water, pure water flows back to the water tank from the PEM electrolyzer, the hydrogen gas from the PEM electrolyzer passes through the second sensor and the one-way valve, and then enters the hydrogen-water separator and dryer, the hydrogen-water separator separates hydrogen and water, and the dryer The hydrogen is dried, and the dried hydrogen is divided into two branches. The hydrogen in the first branch passes through the dew point solenoid valve and the intelligent dew point meter. The smart dew point meter detects the water content in the hydrogen to achieve the purpose of measuring the purity of the hydrogen. The hydrogen gas passes through the flowmeter solenoid valve and the high-pressure mass flowmeter in turn. The high-pressure mass flowmeter can test the hydrogen production rate. The testing of PEM electrolytic cells under different currents, voltages and flow rates improves the test efficiency, and the instrument display area and operation area on the control panel integrate display and operation areas, making the operation more convenient and intuitive.

As a further improvement of the above technical solution, a decompression valve is provided between the intelligent dew point meter and the dew point solenoid valve, the decompression valve is provided on the front side of the test bench, between the hydrogen pressure gauge and the dryer An overpressure switch, a pressure tracker, a backpressure valve and an output solenoid valve are connected in sequence, and the backpressure 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 up. When the set pressure is reached, the overpressure switch is controlled to open, and the hydrogen flows into the dryer through the pressure tracker, back pressure valve and output solenoid valve in sequence.

As a further improvement of the above technical solution, an emptying pipeline is connected between the back pressure valve and the output electromagnetic 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 exceeds the set value or the amount of hydrogen is 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 drain of the hydrogen-water separator is connected to the water tank through a return water pipeline, and the return water pipeline is equipped with a return water solenoid valve.

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.

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

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

In this plan, 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 is opened, and the water supply pump unit discharges the water to the drainage pipeline. After the water quality is qualified, the corresponding control water valve is 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 the drain pipeline through a drain valve, and the third sensor includes a liquid level sensor and a temperature sensor.

If the water level of the water tank in this scheme 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 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 water chiller and a circulating pump connected sequentially in a closed loop, and the water inlet and outlet of the heat exchanger are respectively connected to the water tank and multiple water supply channels The water inlet end is connected, and the water supply pump set is a multi-channel peristaltic pump.

This solution cools with pure water through a refrigerant cooling circuit formed by buffer tanks, heat exchangers, chillers and circulating pumps.

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

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

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

S1. Clamp the multiple PEM electrolyzers to be tested on the clamping bracket one by one, and connect the other ends of the pure water supply pipes and the pure water return pipes to the inlet and outlet of the multiple PEM electrolyzers. The water outlet is connected well, and a plurality of the hydrogen gas collectors are connected with the hydrogen gas ports of the plurality of PEM electrolyzers, and many pairs of the power supply connectors are connected with the two electrodes of the PEM electrolyzer through the power supply wires;

S2. The tap water is connected to the water supply 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 coming out of 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, open the drain solenoid valve, start the water supply pump group, drain the unqualified pure water, and then replenish, heat and cool the water tank , so that the water quality and temperature detector detects the water quality is qualified.

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 working requirements of electrolytic hydrogen production, the PLC control unit controls the power supply. Parallel combination, so that the current and voltage applied to each PEM electrolyzer are different, and finally the water flows back to the water tank;

S6. The hydrogen generated by the electrolysis of the PEM electrolyzer passes through the second sensor and the one-way valve, and then enters the hydrogen-water separator and the dryer. The hydrogen-water separator separates the hydrogen from water, and the dryer dries the hydrogen. There are two branches. The hydrogen in branch one passes through the dew point solenoid valve and the smart dew point meter in turn. The smart 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 goes through the flow meter solenoid valve, high pressure Mass flow meter, high pressure mass flow meter can test hydrogen production rate.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention will be further described;

Fig. 1 is a schematic structural view of an embodiment of the channel PEM pure water electrolysis hydrogen production test device provided by the present invention under one viewing angle;

Fig. 2 is a structural schematic view of another perspective of an embodiment of the channel PEM pure water electrolysis hydrogen production test device provided by the present invention;

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

Fig. 4 is a control flow diagram 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 embodiment of the present invention in detail, and the preferred embodiment of the present invention is shown in the accompanying drawings. Each technical feature and overall technical solution of the invention, but it should not be understood as a limitation on the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc. indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus 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", the meaning is one or more, and the meaning of multiple is more than two. Greater than, less than, exceeding, etc. are understood as not including the original number, above and below , within, etc. are understood as including the original number.

In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, and 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.

Referring to Fig. 1 to Fig. 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 test device for hydrogen production in this embodiment includes a frame 30, a pure water supply mechanism, a hydrogen detection component and a power supply component.

Wherein the front side of the frame 30 is provided with a test table 32, 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 electrolyzer 10, the The control panel 33 includes an instrument display area arranged on the upper part and an operating area arranged on the lower part. The instrument display area is provided with a flow indicator 27 connected to each flow sensor, and the frame 30 is a cabinet structure. The frame 30 is provided with an upper chamber and a lower chamber communicated with each other. A heat dissipation fan 31 is arranged on the top of the frame 30. The heat dissipation fan 31 mainly radiates heat inside the frame 30 to avoid overheating. The upper chamber and the lower chamber are installed to install various components.

The pure water supply mechanism includes a pure water supply pipeline and a pure water cooling assembly. Separate water supply pumps for multiple water supply channels, multiple pure water supply pipes 34, and multiple pure water return pipes 35, the water supply pumps are 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, and 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 with a plurality of water supply channels. The drainage pipeline is equipped with a drainage solenoid valve 3. The water tank 1 The bottom is provided with a drain, and the drain is connected to the drain pipeline through a drain valve 45. The third sensor includes a liquid level sensor and a temperature sensor. In this embodiment, a water quality and temperature detector 44 is provided 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 drains the water to the drain 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 is lower than the lower limit of the set value, the water replenishment solenoid valve 2 is opened, wherein the water replenishment solenoid valve 2 is connected to a small pure water machine.

The pure water cooling assembly of the present embodiment comprises a buffer tank 5, a heat exchanger 4, a water chiller 7 and a circulating pump 6 which are sequentially connected in a closed loop. 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 water chiller 7 and a circulation pump 6 .

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

When in use, a plurality of PEM electrolyzers 10 are clamped on a plurality of clamping brackets, and then the corresponding pair of pure water supply pipes 34 and the other end of the pure water return pipe 35 are connected to the inlet of the PEM electrolyzer 10 , Outlet connection.

The hydrogen detection assembly includes a hydrogen-water separator 13 and a dryer installed in the frame 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 A plurality of hydrogen gas collecting joints, the hydrogen gas collecting joints are connected with a hydrogen gas collecting pipe 36, and the hydrogen gas collecting pipe 36 is detachably connected with the hydrogen port of the PEM electrolyzer 10, and the interior of a plurality of the hydrogen gas collecting joints end is connected with the inlet of the hydrogen-water separator 13, and a second sensor 11 and a one-way valve 12 are sequentially arranged between each hydrogen gas collecting joint and the inlet end of the hydrogen-water separator 13, and the hydrogen-water separator The outlet end of device 13 is connected with the inlet end of drier, is connected with the hydrogen pressure gauge 15 that is arranged on the front side of test bench 32 between the outlet end of described hydrogen-water separator 13 and drier, and described drier The exhaust end of the exhaust port is respectively connected with the smart dew point meter 24 and the high-pressure mass flow meter 26 through a tee joint, and a dew point electromagnetic valve 22 is arranged between the smart dew point meter 24 and the drier, and between the high-pressure mass flow meter 26 and the dryer. A flow meter solenoid valve 25 is arranged between the dryers.

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

Moreover, 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, and an emptying sensor 41. , if the hydrogen pressure exceeds the set value or the amount of hydrogen is 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 drain outlet of the hydrogen-water separator 13 is connected to the water tank 1 through the water return pipeline 42, and the water return pipeline 42 is equipped with a return water solenoid valve 43. When the water in the hydrogen-water separator 13 reaches the set value , 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 efficiency of hydrogen-water separation. effect, and a plurality of drying pipes 20 are provided to improve the drying effect.

In use, the corresponding hydrogen gas header 36 is connected to the hydrogen gas port of the PEM electrolyzer 10 .

The power supply assembly includes a power supply 37 installed on the frame 30, a conductivity meter 28 connected to the power supply 37, a plurality of pairs of power supply joints 38 arranged in the operating area, and the power supply joints 38 are connected with power supply wires, and each pair of the power supply The power supply connector 38 is detachably connected to the two electrodes of the PEM electrolyzer 10 by two power supply wires, the conductivity meter 28 is arranged in the instrument display area, and the power supply 37 supplies power to many pairs of power supply connectors 38. When in use, the The corresponding pair of power supply connectors 38 are connected to the two electrodes of the PEM electrolyzer 10 through two power supply wires.

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

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

S2. The tap water is connected to the water supply 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 assembly, so that the pure water coming out of the pure water cooling assembly reaches the working temperature;

S4. The water quality and temperature detector 44 simply detects the pure water cooling assembly. If the detected water quality is unqualified, then open the drain solenoid valve 3, start the water supply pump group, drain the unqualified pure water, and then replenish water to the water tank 1. Heating and cooling make the water quality and temperature detector 44 detect that the water quality is qualified.

S5, open each control water valve 9, start the water supply pump group, the multi-channel pressure controller 29 controls the water flow and pressure of multiple water supply channels, after the water enters the PEM electrolyzer 10 to meet the working requirements of electrolytic 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 electrolyzer 10 different, and finally the water flows back to the water tank 1;

S6, the hydrogen generated by the electrolysis of the PEM electrolyzer 10 passes through the second sensor 11 and the one-way valve 12, then enters the hydrogen-water separator 13 and the drier, the hydrogen-water separator 13 separates the hydrogen from water, and the drier dries the hydrogen, and passes through The hydrogen in the drying process is divided into two branches. The hydrogen in the branch one passes through the dew point solenoid valve 22 and the intelligent dew point meter 24 in turn. The intelligent dew point meter 24 detects the water content in the hydrogen to achieve the purpose of measuring the purity of the hydrogen gas. The hydrogen in the branch two Pass through the flowmeter solenoid valve 25 and the high-pressure mass flowmeter 26 in turn, and 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 of the water supply pump group of multiple water supply channels, multiple PEM electrolytic cells 10 can be tested under different currents, voltages, and flow rates at the same time, which improves the test efficiency. Moreover, the instrument display area and the operation area on the control panel 33 integrate display and operation areas, making the operation more convenient and intuitive.

The preferred embodiments of the present invention have been described in detail above, but the invention is not limited to the described embodiments, and those skilled in the art can also make various equivalent modifications or replacements without violating the spirit of the present invention. These equivalent modifications or replacements are all 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: Frame (30), its front side is provided with test table top (32), is arranged on the control panel (33) of test table top (32) rear side upper part, and described test table top (32) is evenly distributed with a plurality of for clamping The clamping bracket of the PEM electrolyzer (10), the control panel (33) includes an instrument display area arranged on the top and an operation area arranged on the bottom, and the instrument display area is provided with a flow indicator (27); A pure water supply mechanism, which includes a pure water supply pipeline and a pure water cooling assembly, the pure water supply pipeline includes a water tank (1) installed in the frame (30), a water replenishment system connected to the upper side of the water tank (1) Solenoid valve (2), water supply pump set with multiple independent water supply channels, multiple pure water supply pipes (34), multiple pure water return pipes (35), the water supply pump set is provided with The multi-channel pressure controller (29) in the display area is provided with a heating assembly and a third sensor 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 component is connected to the water inlet ends of multiple water supply channels, and multiple pure water water supply joints respectively connected to the water outlet ends of multiple water supply channels, and multiple pure water supply joints connected to the water tank (1) are arranged in the operation area. The water return joint is provided with a control water valve (9) between each pure water supply joint and the water supply channel. The control water valve (9) is arranged in the operating area, and one end of the pure water supply pipe (34) Connect with the pure water supply joint one by one, the pure water return pipe (35) is connected with the pure water return joint one by one, the 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 inlet and outlet of the PEM electrolyzer (10); Hydrogen gas detection assembly, it comprises the hydrogen-water separator (13) that is installed in frame (30) and drier, the intelligent dew point instrument (24) that is installed on the instrument display area, the high pressure that is connected with flow display instrument (27) A mass flow meter (26), a plurality of hydrogen gas collecting joints installed in the operating area, the hydrogen gas collecting joints are connected with a hydrogen gas collecting pipe (36), and the hydrogen gas collecting pipe (36) is connected with the PEM electrolyzer (10 The hydrogen port of ) is detachably connected, and the inner ends of a plurality of hydrogen gas collecting joints are connected with the inlet of the hydrogen water separator (13), and each of the hydrogen gas collecting joints and the inlet of the hydrogen water separator (13) A second sensor (11) and a one-way valve (12) are arranged successively between the gas ends, and the outlet end of the hydrogen-water separator (13) is connected with the inlet end of the drier, and the hydrogen-water separator ( 13) between the outlet end of the dryer and the hydrogen pressure gauge (15) that is arranged on the front side of the test table (32) is connected, and the exhaust end of the dryer is respectively connected to the intelligent dew point meter (24) through a three-way joint. , high pressure mass flow meter (26) connection, be provided with dew point electromagnetic valve (22) between described intelligent dew point meter (24) and drier, be provided with between described high pressure mass flow meter (26) and drier Flow meter solenoid valve (25); The power supply assembly includes a power supply (37) installed on the frame (30), a conductivity meter (28) connected to the power supply (37), a plurality of pairs of power supply connectors (38) arranged in the operating area, and the power supply The connector (38) is connected with a power supply wire, and each pair of the power supply connector (38) is detachably connected to the two electrodes of the PEM electrolyzer (10) through two power supply wires, and the conductivity meter (28) is arranged on the meter display District, the power supply (37) supplies power to many pairs of power supply connectors (38); Multiple pairs of power supply joints (38), multiple hydrogen gas collecting joints, multiple pure water supply joints, multiple pure water return joints and multiple control water valves (9) are arranged in 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 decompression valve (23) is arranged between the intelligent dew point meter (24) and the dew point solenoid valve (22). 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 set On the front side of the test bench (32). 3. a kind of multi-channel PEM pure water electrolysis hydrogen production testing 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), emptying 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 the water return pipeline (42) is equipped with a water return solenoid valve (43). 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 includes 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, and 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 Solenoid valve (3). 7. A kind of multi-channel PEM pure water electrolysis hydrogen production testing 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 the 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 includes a buffer tank (5), a heat exchanger (4), a water chiller (7) and a circulation pump (6) connected sequentially in a closed loop, 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 multiple water supply channels, and the water supply pump set 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: Described frame (30) is a cabinet structure, is provided with the upper chamber that communicates with each other and installs lower chamber in described frame (30), is provided with cooling fan ( 31). 10. A method for using the multi-channel PEM pure water electrolysis hydrogen production test device according to any one of claims 1 to 9, characterized in that: it also includes a PLC control unit, and the PLC control unit is connected to each electrical element for control, A water quality and temperature detector (44) 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 with a plurality of water supply channels, and the drainage pipeline is installed with a drainage Solenoid valve (3), concrete steps are as follows: S1, a plurality of PEM electrolyzers (10) to be tested are clamped one by one on the clamping bracket, and the other end of many pairs of the pure water supply pipe (34) and the pure water return pipe (35) is connected with the other end of the pure water return pipe (35) The inlets and outlets of a plurality of PEM electrolyzers (10) are connected well, and a plurality of said hydrogen manifolds (36) are connected with the hydrogen ports of a plurality of PEM electrolyzers (10), and many pairs of said power supply joints (38) be connected with two electrodes of PEM electrolyzer (10) by power supply wire; S2. Tap water is connected to the water supply 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 assembly, so that the pure water coming out of the pure water cooling assembly reaches the working temperature; S4. The water quality and temperature detector (44) simply detects the pure water cooling assembly. If the detected water quality is unqualified, then open the drain solenoid valve (3), start the water supply pump group, and drain the unqualified pure water, and then clean the water tank. (1) Carry out replenishing water, heating, cooling, make water quality water temperature detector (44) detect water quality 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 electrolyzer (10) to meet the working requirements of electrolytic 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 electrolyzer (10) are different, and finally the water flows back to the water tank (1); After S6, the hydrogen generated by the electrolysis of the PEM electrolyzer (10) passes through the second sensor (11) and the one-way valve (12), enters the hydrogen-water separator (13) and the drier, and the hydrogen-water separator (13) separates the hydrogen and the The water is separated, the dryer dries the hydrogen, and the dried hydrogen is divided into two branches. The hydrogen in the branch one passes through the dew point solenoid valve (22), the intelligent dew point meter (24), and the intelligent dew point meter (24) detects the hydrogen gas. In order to achieve the purpose of measuring the purity of hydrogen, the hydrogen in branch 2 passes through the flowmeter solenoid valve (25) and the high-pressure mass flowmeter (26) successively, and the high-pressure mass flowmeter (26) can test the hydrogen production rate.