Water electrolysis hydrogen production device

Abstract

The utility model discloses a water electrolysis hydrogen production device which comprises hydrogen side pneumatic valve bodies and oxygen side pneumatic valve bodies, the oxygen side pneumatic valve bodies and the hydrogen side pneumatic valve bodies are arranged in one-to-one correspondence and synchronously opened and closed, and the hydrogen side pneumatic valve bodies and the corresponding oxygen side pneumatic valve bodies are synchronously opened and closed through corresponding control gas circuits. Wherein the control gas circuit comprises a gas circuit main pipe and two gas circuit branch pipes, and the gas inlet end of the gas circuit main pipe is used for being connected with a gas source supply pipe; the two gas path branch pipes are connected to the gas outlet end of the gas path main pipe, the gas outlet end of one gas path branch pipe is communicated with one hydrogen side pneumatic valve body, and the gas outlet end of the other gas path branch pipe is communicated with the oxygen side pneumatic valve body which is arranged corresponding to the hydrogen side pneumatic valve body and is synchronously opened and closed; the electromagnetic valve is arranged on the gas path main pipe and used for controlling on-off of a gas path of the gas path main pipe. Compared with an arrangement mode of a control gas circuit of a traditional pneumatic valve body, the arrangement number of electromagnetic valves and related electrical elements is greatly reduced, meanwhile, fault occurrence points are reduced, and the cost of the whole control pipeline is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic switch valve control, and more specifically, to an electrolytic water hydrogen production device. Background Technique

[0002] A pneumatic switch valve is an electric valve that uses air as a power source. It mainly controls the opening and closing of the valve through the power provided by the air source, thereby realizing the control of the flow of gas or liquid. The pneumatic switch valve has the advantages of sensitive action, high control precision, stable performance, etc., and thus has been widely used in the field of industrial automation.

[0003] Generally speaking, a pneumatic switch valve includes a control air circuit and a pneumatic valve body. Among them, the air inlet of the pneumatic valve body is connected to the air source through the control air circuit, and a solenoid valve is arranged on the control air circuit. By controlling the opening and closing of the solenoid valve, the on-off of the control air circuit can be controlled, thereby realizing the opening and closing control of the pneumatic valve body. In the prior art, each pneumatic valve body is equipped with an independent control air circuit, and a solenoid valve is arranged on each control air circuit. For example, the hydrogen-side separation pipeline and the oxygen-side separation pipeline in the electrolytic water hydrogen production device have great similarity in the process control flow. A hydrogen-side pneumatic valve body is arranged on the hydrogen-side separation pipeline, and an oxygen-side pneumatic valve body is arranged on the oxygen-side separation pipeline. The hydrogen-side pneumatic valve body and the oxygen-side pneumatic valve body at the corresponding layout position often have the requirement of synchronous opening and closing. However, the existing layout method of the control air circuit of the pneumatic valve body still needs to be equipped with an independent solenoid valve on each control air circuit connected to each pneumatic valve body, resulting in a relatively high cost of the entire control pipeline of the electrolytic water hydrogen production device.

[0004] To sum up, how to solve the problem of relatively high cost of the entire control pipeline of the electrolytic water hydrogen production device has become an urgent technical problem for those skilled in the art. Content of the Utility Model

[0005] In view of this, the utility model provides an electrolytic water hydrogen production device to solve the problem of relatively high cost of the entire control pipeline of the electrolytic water hydrogen production device.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] An electrolytic water hydrogen production device includes a hydrogen-side separation pipeline and an oxygen-side separation pipeline. A hydrogen-side pneumatic valve body is arranged on the hydrogen-side separation pipeline, and an oxygen-side pneumatic valve body that is arranged in one-to-one correspondence with the hydrogen-side pneumatic valve body and opens and closes synchronously is arranged on the oxygen-side separation pipeline. The hydrogen-side pneumatic valve body and the corresponding oxygen-side pneumatic valve body realize synchronous opening and closing through the corresponding control air circuit;

[0008] Among them, the control air circuit includes:

[0009] The main gas pipeline, whose inlet end is used to connect with the gas source supply pipe;

[0010] Two gas pipeline branches, both connected to the outlet end of the main gas pipeline. The outlet end of one gas pipeline branch is communicated with one hydrogen-side pneumatic valve body, and the outlet end of the other gas pipeline branch is communicated with an oxygen-side pneumatic valve body which is arranged corresponding to and opens and closes synchronously with the hydrogen-side pneumatic valve body;

[0011] The solenoid valve is arranged on the main gas pipeline and is used to control the on-off of the gas path of the main gas pipeline.

[0012] Optionally, a filter pressure reducing valve is further arranged on the main gas pipeline, and the filter pressure reducing valve is located upstream of the solenoid valve.

[0013] Optionally, a gas source ball valve is arranged on the gas pipeline branch, and the gas source ball valve is used to control the on-off of the gas pipeline branch.

[0014] Optionally, a hydrogen gas-liquid separator, a hydrogen scrubber and a first gas-water separator are arranged in sequence along the hydrogen output path on the hydrogen-side separation pipeline. The first gas-water separator is communicated with the hydrogen gas-liquid separator through a first drain pipe, and a first drainage buffer tank is arranged on the first drain pipe; an oxygen gas-liquid separator, an oxygen scrubber and a second gas-water separator are arranged in sequence along the oxygen output path on the oxygen-side separation pipeline. The second gas-water separator is communicated with the oxygen gas-liquid separator through a second drain pipe, and a second drainage buffer tank is arranged on the second drain pipe.

[0015] Optionally, the hydrogen-side pneumatic valve body includes a first hydrogen-side pneumatic valve body arranged on the first drain pipe and upstream of the first drainage buffer tank, and the oxygen-side pneumatic valve body includes a first oxygen-side pneumatic valve body arranged on the second drain pipe and upstream of the second drainage buffer tank;

[0016] Wherein, the first hydrogen-side pneumatic valve body and the first oxygen-side pneumatic valve body correspond to each other and realize synchronous opening and closing through a first control gas path.

[0017] Optionally, the hydrogen-side pneumatic valve body includes a second hydrogen-side pneumatic valve body arranged on the first drain pipe and downstream of the first drainage buffer tank, and the oxygen-side pneumatic valve body includes a second oxygen-side pneumatic valve body arranged on the second drain pipe and downstream of the second drainage buffer tank;

[0018] Wherein, the second hydrogen-side pneumatic valve body and the second oxygen-side pneumatic valve body correspond to each other and realize synchronous opening and closing through a second control gas path.

[0019] Optionally, the solenoid valve on the first control gas path and the solenoid valve on the second control gas path are configured to be opened at intervals and their opening and closing are interlocked.

[0020] Optionally, the hydrogen scrubber is communicated with the water source supply pipeline through a first water replenishing pipe; the oxygen scrubber is communicated with the water source supply pipeline through a second water replenishing pipe;

[0021] Wherein, the hydrogen-side pneumatic valve body includes a third hydrogen-side pneumatic valve body arranged on the first water replenishing pipe, the oxygen-side pneumatic valve body includes a third oxygen-side pneumatic valve body arranged on the second water replenishing pipe, the third hydrogen-side pneumatic valve body corresponds to the third oxygen-side pneumatic valve body and realizes synchronous opening and closing through a third control air path.

[0022] Optionally, the hydrogen gas-liquid separator is communicated with the inert gas supply pipeline through a first replacement gas pipe; the oxygen gas-liquid separator is communicated with the inert gas supply pipeline through a second replacement gas pipe;

[0023] Wherein, the hydrogen-side pneumatic valve body includes a fourth hydrogen-side pneumatic valve body arranged on the first replacement gas pipe, the oxygen-side pneumatic valve body includes a fourth oxygen-side pneumatic valve body arranged on the second replacement gas pipe, the fourth hydrogen-side pneumatic valve body corresponds to the fourth oxygen-side pneumatic valve body and realizes synchronous opening and closing through a fourth control air path.

[0024] Optionally, the hydrogen-side pneumatic valve body and the oxygen-side pneumatic valve body are configured as multiple pairs that correspond one by one. Each pair of the hydrogen-side pneumatic valve body and the oxygen-side pneumatic valve body realizes synchronous opening and closing through their respective corresponding control air paths, and the air inlet ends of the main air paths of each control air path are connected to the same instrument air.

[0025] Compared with the content of the background technology introduction, the above-mentioned electrolytic water hydrogen production device includes a hydrogen-side separation pipeline and an oxygen-side separation pipeline. A hydrogen-side pneumatic valve body is arranged on the hydrogen-side separation pipeline, and an oxygen-side pneumatic valve body arranged in one-to-one correspondence with the hydrogen-side pneumatic valve body and opening and closing synchronously is arranged on the oxygen-side separation pipeline. The hydrogen-side pneumatic valve body and the corresponding oxygen-side pneumatic valve body achieve synchronous opening and closing through the corresponding control air path; wherein, the control air path includes an air path main pipe and two air path branch pipes. The intake end of the air path main pipe is used to connect to the gas source supply pipe; both of the two air path branch pipes are connected to the outlet end of the air path main pipe. The outlet end of one air path branch pipe is communicated with a hydrogen-side pneumatic valve body, and the outlet end of the other air path branch pipe is communicated with the oxygen-side pneumatic valve body arranged in one-to-one correspondence with and opening and closing synchronously with this hydrogen-side pneumatic valve body; an electromagnetic valve is arranged on the air path main pipe for controlling the on-off of the air path of the air path main pipe. In the actual application process of this electrolytic water hydrogen production device, the hydrogen-side pneumatic valve body on the hydrogen-side separation pipeline and the oxygen-side pneumatic valve body on the corresponding oxygen-side separation pipeline achieve synchronous opening and closing through the corresponding control air path. And for the corresponding control air path, only by controlling the opening and closing of the electromagnetic valve on the air path main pipe, the on-off of the two air path branch pipes can be realized, and finally the synchronous opening and closing control of the two pneumatic valve bodies (the corresponding hydrogen-side pneumatic valve body and oxygen-side pneumatic valve body) can be realized. Compared with the layout method of the control air path of the traditional pneumatic valve body, the arrangement quantity of the electromagnetic valve and related electrical components is greatly reduced, and at the same time, the fault occurrence points are also reduced, effectively reducing the cost of the entire control pipeline of the electrolytic water hydrogen production device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0027] Figure 1 It is a schematic structural diagram of the control air path provided by the embodiment of the present invention;

[0028] Figure 2 It is a schematic structural diagram of the hydrogen separation pipeline provided by the embodiment of the present invention;

[0029] Figure 3 It is a schematic structural diagram of the oxygen separation pipeline provided by the embodiment of the present invention;

[0030] Figure 4 It is a schematic structural diagram of the electrolytic water hydrogen production device provided by the embodiment of the present invention.

[0031] Among them, Figures 1-4 In:

[0032] Control air circuit 100, main air circuit 101, branch air circuit 102, solenoid valve 103, filter pressure reducing valve 104, pneumatic ball valve 105, three-way joint 106;

[0033] Hydrogen-side separation pipeline 200, hydrogen-side pneumatic valve body 200a, hydrogen gas-liquid separator 201, hydrogen scrubber 202, first gas-water separator 203, first drain pipe 204, first drain buffer tank 205, first hydrogen-side pneumatic valve body 206, second hydrogen-side pneumatic valve body 207, third hydrogen-side pneumatic valve body 208, first replacement gas pipe 209, fourth hydrogen-side pneumatic valve body 210, hydrogen heat exchanger 211;

[0034] Oxygen-side separation pipeline 300, oxygen-side pneumatic valve body 300a, oxygen gas-liquid separator 301, oxygen scrubber 302, second gas-water separator 303, second drain pipe 304, second drain buffer tank 305, first oxygen-side pneumatic valve body 306, second oxygen-side pneumatic valve body 307, third oxygen-side pneumatic valve body 308, second replacement gas pipe 309, fourth oxygen-side pneumatic valve body 310, oxygen heat exchanger 311;

[0035] First control air circuit 400;

[0036] Second control air circuit 500;

[0037] Water source supply pipeline 600;

[0038] Second control air circuit 700;

[0039] Inert gas supply pipeline 800;

[0040] Fourth control air circuit 900. Detailed implementation mode

[0041] The core of the present utility model lies in providing an electrolytic water hydrogen production device, so as to solve the problem of relatively high cost of the entire control pipeline of the electrolytic water hydrogen production device.

[0042] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0043] Refer to Figures 1-4As shown in the figure, the present utility model provides an electrolytic water hydrogen production device, which includes a hydrogen-side separation pipeline 200 and an oxygen-side separation pipeline 300. Among them, the hydrogen-side separation pipeline 200 is mainly used for separating the hydrogen generated by the electrolytic cell to obtain relatively pure hydrogen, and a hydrogen-side pneumatic valve body 200a is arranged on the hydrogen-side separation pipeline 200; the oxygen-side separation pipeline 300 is mainly used for separating the oxygen generated by the electrolytic cell to obtain relatively pure oxygen, and an oxygen-side pneumatic valve body 300a arranged in one-to-one correspondence with and opening and closing synchronously with the hydrogen-side pneumatic valve body 200a is arranged on the oxygen-side separation pipeline 300. The hydrogen-side pneumatic valve body 200a and the corresponding oxygen-side pneumatic valve body 300a can be synchronously opened and closed through the corresponding control air circuit 100.

[0044] The corresponding control air circuit 100 may specifically include an air circuit main pipe 101, a solenoid valve 103 and two air circuit branch pipes 102. Among them, the intake end of the air circuit main pipe 101 is used to connect to the gas source supply pipe; both of the two air circuit branch pipes 102 are connected to the outlet end of the air circuit main pipe 101, and the specific connection method can be realized by using a multi-way valve. For example, referring to Figure 1 As shown in the figure, the two air circuit branch pipes 102 can be connected to the air circuit main pipe 101 through a tee joint 106. The outlet ends of the respective air circuit branch pipes 102 are respectively used to communicate with different pneumatic valve bodies. Specifically in the electrolytic water hydrogen production device, the outlet end of one air circuit branch pipe 102 communicates with a hydrogen-side pneumatic valve body 200a, and the outlet end of the other air circuit branch pipe 102 communicates with an oxygen-side pneumatic valve body 300a arranged in one-to-one correspondence with and opening and closing synchronously with the hydrogen-side pneumatic valve body 200a; the solenoid valve 103 is arranged on the air circuit main pipe 101 and is used to control the on-off of the air circuit of the air circuit main pipe 101, so as to control the synchronous opening and closing of a hydrogen-side pneumatic valve body 200a and an oxygen-side pneumatic valve body 300a arranged in one-to-one correspondence with the hydrogen-side pneumatic valve body 200a.

[0045] It should be noted that both the hydrogen-side pneumatic valve body 200a and the oxygen-side pneumatic valve body 300a belong to pneumatic valve bodies. Generally, a pneumatic valve body has a valve body and an actuator arranged inside the valve body. The control air circuit 100 can introduce a gas with a certain pressure into the intake end of the pneumatic valve body, so that the actuator moves, and then drives the valve body to complete the closing action. The actuator may include, but is not limited to, an elastic element, and the elastic element has an elastic force to keep the valve body in the open state. Since the pneumatic valve body itself belongs to the prior art and mainly can achieve pneumatic opening and closing, no more specific limitations are made here.

[0046] In the actual application process of this electrolytic water hydrogen production device, the hydrogen-side pneumatic valve body 200a on the hydrogen-side separation pipeline 200 and the oxygen-side pneumatic valve body 300a on the corresponding oxygen-side separation pipeline 300 are synchronously opened and closed through the corresponding control air circuit 100. And for the corresponding control air circuit 100, only the opening and closing of the solenoid valve 103 on the main air circuit pipe 101 need to be controlled to realize the on-off of the two air circuit branches 102, and finally realize the synchronous opening and closing control of the two pneumatic valve bodies (the correspondingly arranged hydrogen-side pneumatic valve body 200a and oxygen-side pneumatic valve body 300a). Compared with the layout method of the control air circuit of the traditional pneumatic valve body, the arrangement quantity of the solenoid valve 103 and related electrical components is greatly reduced. At the same time, the fault occurrence points are also reduced, effectively reducing the cost of the entire control pipeline of the electrolytic water hydrogen production device.

[0047] In some specific implementation schemes, a filter pressure reducing valve 104 can also be arranged on the above-mentioned main air circuit pipe 101, and the filter pressure reducing valve 104 is located upstream of the solenoid valve 103. By designing the above-mentioned filter pressure reducing valve 104 upstream of the solenoid valve 103, it can play a certain protective role for the solenoid valve 103, avoiding impurities from entering the solenoid valve 103 and affecting the service life of the solenoid valve 103, and at the same time, it also has a certain pressure reducing effect. In addition, a main ball valve can also be designed on the main air circuit pipe 101, and the main ball valve is arranged upstream of the filter pressure reducing valve 104, so that the overall opening and closing control of the entire control air circuit 100 can be facilitated.

[0048] In some other specific implementation schemes, an air source ball valve 105 can also be arranged on the above-mentioned air circuit branch 102, and the air source ball valve 105 is mainly used to control the on-off of the air circuit branch 102. By designing the air source ball valve 105, when one air circuit branch 102 is under maintenance, the other air circuit branch 102 is not affected. It should be noted that the air source ball valve 105 of the same manufacturer and quality is cheaper than the solenoid valve 103, so it will not affect the cost reduction effect of the entire control pipeline.

[0049] It should be noted that the quantity of the hydrogen-side pneumatic valve body 200a and the oxygen-side pneumatic valve body 300a is not limited to one pair. The two can be configured as multiple pairs in one-to-one correspondence. Each pair of the hydrogen-side pneumatic valve body 200a and the oxygen-side pneumatic valve body 300a realizes synchronous opening and closing through their respective corresponding control air circuits 100. The air inlet ends of the main air circuit pipes 101 of each control air circuit 100 can be connected to the same instrument air. Such an arrangement helps to save the quantity of components, thus helping to reduce the cost of the entire control pipeline.

[0050] For those skilled in the art to better understand the technical solution of the present utility model, the following combines Figure 4 to give an example of the preferred structure in which each control air is connected to the same instrument air:

[0051] Reference Figure 4 As shown, the main air pipeline 101 (i.e., the instrument air branch pipeline) of each control air pipeline 100 is led from the main pipeline system of the instrument air. The instrument air branch pipeline adopts a TUBE compression fitting pressure guiding pipe. After being pressured from the instrument air main pipeline system, the pressure guiding pipe can specifically extend upward at an angle of 1 / 12, and then a pipe bender is used to adjust the laying path of the pressure guiding pipe. When it extends to a height difference of 1.2 meters from the ground, a filter pressure reducing valve 104 is installed, and then a pipe connection type solenoid valve (such as a two-way three-way solenoid valve) is installed. The pressure guiding pipe is connected into the solenoid valve from the inlet and led out from the outlet of the solenoid valve. After the pressure guiding pipe is led out from the outlet of the pipe connection type two-way three-way solenoid valve, it continues to be laid for 0.3 - 0.5 meters, and then a compression fitting three-way joint 106 is installed. The two pressure guiding pipes at the outlet of the compression fitting three-way joint (i.e., the air pipeline branch 102) are respectively connected near the actuator of the pneumatic valve body 106. A gas source ball valve 105 is installed in the area convenient for operation. After installing the gas source ball valve 105, the pressure guiding pipe is connected to the air inlet of the actuator of the pneumatic valve body 106. Finally, the spare port of the actuator and the exhaust port of the solenoid valve are blocked with a silencer.

[0052] Calculation of air consumption:

[0053] Taking the pipe connection type solenoid valve ASCO551B301 series as an example, the diameter of its solenoid valve is 1 / 4 inch, the nominal diameter is 6mm, and the air flow capacity of the instrument air per hour can reach 0.6 m³ / h. Taking the DN25 pneumatic on-off valve as an example for the pneumatic on-off valve, its operating pressure is 1.8 Mpa, the design temperature is considered at 90 degrees, the maximum closing differential pressure is considered at 2.2 Mpa. Taking the MD cylinder MDNSII75K8 as an example for the actuator, when the instrument air pressure is 5 bar, the maximum output torque in the closed position is 33 Nm, and the maximum output torque in the open position is 27 Nm. The single-time opening volume of the actuator is 0.3 L, and the single-time closing volume of the actuator is 0.34 L. The average flow velocity of the instrument air is 15 m / s.

[0054] Then the formula for the stroke time of the pneumatic valve body 106 is T = w / (v * 0.0036 * π * (d / 2)² * m)

[0055] In the above formula:

[0056] T--------Valve stroke time

[0057] w-------Volume of gas required for the actuator to act

[0058] v----------Average flow velocity of instrument air

[0059] π----------Constant (3.141592654)

[0060] d----------Inner diameter of the pressure guiding pipe

[0061] m----------Number of actuators

[0062] Then the stroke time for the simultaneous open position of the two pneumatic valve bodies 106 is:

[0063] 0.3 / (15 * 0.0036 * 3.1415926 * (6 / 2)^2 * 1000 / 3600 * 2) = 1.414S

[0064] The stroke time for the simultaneous closed position of the two pneumatic valve bodies is:

[0065] 0.34 / (15 * 0.0036 * 3.1415926 * (6 / 2)^2 * 1000 / 3600 * 2) = 1.603S

[0066] Conclusion: The above stroke time can meet the process control requirements.

[0067] In some specific implementation cases, referring to Figures 2-4 As shown, generally, a hydrogen gas-liquid separator 201, a hydrogen scrubber 202, and a first gas-water separator 203 are arranged in sequence along the hydrogen output path on the above-mentioned hydrogen-side separation pipeline 200. And generally, a hydrogen heat exchanger 211 (which can specifically have a coolant inlet and a coolant outlet) is also arranged between the hydrogen scrubber 202 and the first gas-water separator 203. Through this hydrogen heat exchanger 211, the hydrogen output from the hydrogen scrubber 202 can be cooled. The first gas-water separator 203 is connected to the hydrogen gas-liquid separator 201 through a first drain pipe 204, and a first drainage buffer tank 205 is arranged on the first drain pipe 204; on the oxygen-side separation pipeline 300, an oxygen gas-liquid separator 301, an oxygen scrubber 302, and a second gas-water separator 303 are arranged in sequence along the oxygen output path. And generally, an oxygen heat exchanger 311 (which can specifically have a coolant inlet and a coolant outlet) is also arranged between the oxygen scrubber 302 and the second gas-water separator 303. The second gas-water separator 303 is connected to the oxygen gas-liquid separator 301 through a second drain pipe 304, and a second drainage buffer tank 305 is arranged on the second drain pipe 304.

[0068] Among them, the hydrogen-side pneumatic valve body 200a includes a first hydrogen-side pneumatic valve body 206 disposed on the first drain pipe 204 and upstream of the first drainage buffer tank 205. The oxygen-side pneumatic valve body 300a includes a first oxygen-side pneumatic valve body 306 disposed on the second drain pipe 304 and upstream of the second drainage buffer tank 305. The first hydrogen-side pneumatic valve body 206 corresponds to the first oxygen-side pneumatic valve body 306 and realizes synchronous opening and closing through the first control air circuit 400. The first control air circuit 400 is configured in the structural form of the aforementioned control air circuit 100. During the actual operation of the electrolytic water hydrogen production device, the opening and closing action timings of the first hydrogen-side pneumatic valve body 206 and the first oxygen-side pneumatic valve body 306 during the working process can overlap. Therefore, the two can be designed to be synchronously opened and closed. Thus, the corresponding solenoid valve on the first control air circuit 400 can control the synchronous opening and closing of the first hydrogen-side pneumatic valve body 206 and the first oxygen-side pneumatic valve body 306 to meet the requirement that the first gas-water separator 203 discharges water into the first drainage buffer tank 205 and the second gas-water separator 303 discharges water into the second drainage buffer tank 305. By designing the above structural form, it helps to reduce the arrangement quantity of solenoid valves and related electrical components, thereby helping to reduce costs.

[0069] In a further embodiment, referring to Figure 4 As shown, the above-mentioned hydrogen-side pneumatic valve body 200a may further include a second hydrogen-side pneumatic valve body 207 disposed on the first drain pipe 204 and downstream of the first drainage buffer tank 205. The oxygen-side pneumatic valve body 300a may further include a second oxygen-side pneumatic valve body 307 disposed on the second drain pipe 304 and downstream of the second drainage buffer tank 305. Among them, the second hydrogen-side pneumatic valve body 207 corresponds to the second oxygen-side pneumatic valve body 307 and realizes synchronous opening and closing through the second control air circuit 500. The second control air circuit 500 is configured in the structural form of the aforementioned control air circuit 100. Since the opening and closing action timings of the second hydrogen-side pneumatic valve body 207 and the second oxygen-side pneumatic valve body 307 during the working process can overlap, they can be designed to be synchronously opened and closed. Subsequently, the corresponding solenoid valve on the second control air circuit 500 can control the synchronous opening and closing of the second hydrogen-side pneumatic valve body 207 and the second oxygen-side pneumatic valve body 307 to meet the requirement that the first drainage buffer tank 205 discharges water into the hydrogen gas-liquid separator 201 and the second drainage buffer tank 305 discharges water into the oxygen gas-liquid separator 301. By designing this structural form, it helps to reduce the arrangement quantity of solenoid valves, thereby helping to further reduce costs.

[0070] In a further embodiment, the electromagnetic valves on the first control air path 400 and the electromagnetic valves on the second control air path 500 can be specifically configured to be opened at intervals and interlocked in opening and closing, that is, when the electromagnetic valve on the first control air path 400 is opened, the electromagnetic valve on the second control air path 500 is closed, and the two will not be opened simultaneously. By designing the opening and closing mode as above, by opening the electromagnetic valve on the first control air path 400 and closing the electromagnetic valve on the second control air path 500 at the same time, the first hydrogen-side pneumatic valve body 206 and the first oxygen-side pneumatic valve body 306 are in the open state, and the second hydrogen-side pneumatic valve body 207 and the second oxygen-side pneumatic valve body 307 are in the closed state. At this time, a certain amount of water can be stored in the first drainage buffer tank 205 and the second drainage buffer tank 305. After an interval of time (such as 5 minutes, this 5 minutes is only an example, and the corresponding time interval can be set according to requirements in actual applications), by closing the electromagnetic valve on the first control air path 400 and opening the electromagnetic valve on the second control air path 500 at the same time, the first hydrogen-side pneumatic valve body 206 and the first oxygen-side pneumatic valve body 306 are in the closed state, and the second hydrogen-side pneumatic valve body 207 and the second oxygen-side pneumatic valve body 307 are in the open state. At this time, the water stored in the first drainage buffer tank 205 can be discharged into the hydrogen gas-liquid separator 201, and the water stored in the second drainage buffer tank 305 can be discharged into the oxygen-side gas-liquid separator 301, so that the water levels in the first drainage buffer tank 205 and the second drainage buffer tank 305 are easier to be controlled within the set water level range.

[0071] In some other specific embodiments, the hydrogen scrubber 202 can be specifically connected to the water source supply pipeline 600 through the first water supply pipe; the oxygen scrubber 302 can be connected to the water source supply pipeline 600 through the second water supply pipe; wherein, the hydrogen-side pneumatic valve body 200a includes a third hydrogen-side pneumatic valve body 208 arranged on the first water supply pipe, and the oxygen-side pneumatic valve body 300a includes a third oxygen-side pneumatic valve body 308 arranged on the second water supply pipe. The third hydrogen-side pneumatic valve body 208 and the third oxygen-side pneumatic valve body 308 correspond to each other and are synchronously opened and closed through the third control air path 700, and the third control air path 700 is configured in the structural form of the foregoing control air path 100. Since in the actual working process of the electrolytic water hydrogen production device, the action timings of the third hydrogen-side pneumatic valve body 208 and the third oxygen-side pneumatic valve body 308 can just overlap, therefore, by designing the third hydrogen-side pneumatic valve body 208 and the third oxygen-side pneumatic valve body 308 to be synchronously opened and closed through the third control air path 700, the number of electromagnetic valves arranged on the entire control pipeline can be further reduced, which helps to further reduce the cost.

[0072] In some more specific embodiments, the above-mentioned hydrogen gas-liquid separator 201 can be connected to the inert gas supply pipeline 800 through the first replacement gas pipe 209, and a fourth hydrogen-side pneumatic valve body 210 can be arranged on the first replacement gas pipe 209; the oxygen gas-liquid separator 301 is connected to the inert gas supply pipeline 800 through the second replacement gas pipe 309, and a fourth oxygen-side pneumatic valve body 310 is arranged on the second replacement gas pipe 309; by designing the above-mentioned fourth hydrogen-side pneumatic valve body 210 and fourth oxygen-side pneumatic valve body 310, the hydrogen gas-liquid separator 201 and the oxygen gas-liquid separator 301 can be automatically replaced with inert gas according to requirements to meet the corresponding working requirements. Among them, the hydrogen-side pneumatic valve body 200a includes the fourth hydrogen-side pneumatic valve body 210 arranged on the first replacement gas pipe 209, and the oxygen-side pneumatic valve body 300a includes the fourth oxygen-side pneumatic valve body 310 arranged on the second replacement gas pipe 309. The fourth hydrogen-side pneumatic valve body 210 and the fourth oxygen-side pneumatic valve body 310 can be opened and closed synchronously through the fourth control gas path 900. The fourth control gas path 900 is configured in the structural form of the foregoing control gas path 100. Then, when performing inert gas replacement, the fourth hydrogen-side pneumatic valve body 210 and the fourth oxygen-side pneumatic valve body 310 are opened and closed synchronously. Specifically, when the electrolytic water hydrogen production device needs to be automatically replaced with inert gas, first determine the system pressure. After the system pressure meets the conditions, the fourth hydrogen-side pneumatic valve body 210 and the fourth oxygen-side pneumatic valve body 310 are simultaneously opened through the solenoid valve on the fourth control gas path 900. When the system pressure is met, the fourth hydrogen-side pneumatic valve body 210 and the fourth oxygen-side pneumatic valve body 310 are simultaneously closed through the solenoid valve on the fourth control gas path 900, and the back-end air compressor connected to the inert gas supply pipeline 800 is closed. It should be noted that the inert gas in the above-mentioned inert gas supply pipeline 800 can be, but is not limited to, nitrogen.

[0073] It should be noted that the various embodiments in this specification are all described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0074] As shown in this application and the claims, unless the context clearly indicates an exception, words such as "a", "an", "one" and / or "the" are not specifically singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of the clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. An element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, commodity or device including the element.

[0075] Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B may mean A or B. The "and / or" herein is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality of" means two or more than two.

[0076] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0077] In this article, specific examples are used to elaborate on the principles and implementation manners of the present utility model. The description of the above embodiments is only used to help understand the core idea of the present utility model. Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A water electrolysis hydrogen production device, comprising a hydrogen side separation pipeline (200) and an oxygen side separation pipeline (300), wherein the hydrogen side separation pipeline (200) is provided with a hydrogen side pneumatic valve body (200a), and the oxygen side separation pipeline (300) is provided with an oxygen side pneumatic valve body (300a) which is arranged in a one-to-one correspondence with the hydrogen side pneumatic valve body (200a) and opens and closes synchronously, characterized in that: The hydrogen-side pneumatic valve body (200a) and the corresponding oxygen-side pneumatic valve body (300a) are opened and closed synchronously via corresponding control air circuits (100); Wherein, the control gas circuit (100) comprises: A gas line main pipe (101), the gas inlet end of which is used to be connected to a gas source supply pipe; Two gas branch pipes (102) are connected to the gas outlet end of the gas main pipe (101), the gas outlet end of one gas branch pipe (102) is connected to one of the hydrogen-side pneumatic valve bodies (200a), and the gas outlet end of the other gas branch pipe (102) is connected to an oxygen-side pneumatic valve body (300a) which is arranged corresponding to the hydrogen-side pneumatic valve body (200a) and opens and closes synchronously; The solenoid valve (103) is arranged on the main gas line (101) and is used to control the on-off of the gas line of the main gas line (101).

2. The water electrolysis hydrogen production device according to claim 1, characterized in that: The gas line main pipe (101) is also provided with a filter pressure reducing valve (104), and the filter pressure reducing valve (104) is located upstream of the solenoid valve (103).

3. The water electrolysis hydrogen production device according to claim 1, characterized in that: The gas branch pipe (102) is provided with a gas source ball valve (105), and the gas source ball valve (105) is used to control the on-off of the gas branch pipe (102).

4. The water electrolysis hydrogen production device according to any one of claims 1 to 3, characterized in that: The hydrogen side separation pipeline (200) is provided with a hydrogen gas-liquid separator (201), a hydrogen scrubber (202) and a first gas-water separator (203) arranged in sequence along the hydrogen output path; the first gas-water separator (203) is connected to the hydrogen gas-liquid separator (201) via a first drain pipe (204), and a first drain buffer tank (205) is provided on the first drain pipe (204); the oxygen side separation pipeline (300) is provided with an oxygen gas-liquid separator (301), an oxygen scrubber (302) and a second gas-water separator (303) arranged in sequence along the oxygen output path; the second gas-water separator (303) is connected to the oxygen gas-liquid separator (301) via a second drain pipe (304), and a second drain buffer tank (305) is provided on the second drain pipe (304).

5. The water electrolysis hydrogen production device according to claim 4, characterized in that: The hydrogen-side pneumatic valve body (200a) comprises a first hydrogen-side pneumatic valve body (206) disposed on the first drainage pipe (204) and located upstream of the first drainage buffer tank (205); the oxygen-side pneumatic valve body (300a) comprises a first oxygen-side pneumatic valve body (306) disposed on the second drainage pipe (304) and located upstream of the second drainage buffer tank (305); The first hydrogen-side pneumatic valve body (206) corresponds to the first oxygen-side pneumatic valve body (306) and is opened and closed synchronously via a first control air circuit (400).

6. The water electrolysis hydrogen production device according to claim 5, characterized in that: The hydrogen-side pneumatic valve body (200a) comprises a second hydrogen-side pneumatic valve body (207) disposed on the first drainage pipe (204) and located downstream of the first drainage buffer tank (205); the oxygen-side pneumatic valve body (300a) comprises a second oxygen-side pneumatic valve body (307) disposed on the second drainage pipe (304) and located downstream of the second drainage buffer tank (305); The second hydrogen-side pneumatic valve body (207) corresponds to the second oxygen-side pneumatic valve body (307) and is opened and closed synchronously via a second control air circuit (500).

7. The water electrolysis hydrogen production device according to claim 6, characterized in that: The solenoid valve on the first control air circuit (400) and the solenoid valve on the second control air circuit (500) are configured to be opened at intervals and interlocked.

8. The water electrolysis hydrogen production device according to claim 4, characterized in that: The hydrogen scrubber (202) is connected to the water supply pipeline (600) via a first water supply pipe; the oxygen scrubber (302) is connected to the water supply pipeline (600) via a second water supply pipe; The hydrogen side pneumatic valve body (200a) includes a third hydrogen side pneumatic valve body (208) arranged on the first water supply pipe, and the oxygen side pneumatic valve body (300a) includes a third oxygen side pneumatic valve body (308) arranged on the second water supply pipe. The third hydrogen side pneumatic valve body (208) corresponds to the third oxygen side pneumatic valve body (308) and is synchronously opened and closed through a third control air circuit (700).

9. The water electrolysis hydrogen production device according to claim 4, characterized in that: The hydrogen gas-liquid separator (201) is connected to the inert gas supply pipeline (800) via a first replacement gas pipe (209); the oxygen gas-liquid separator (301) is connected to the inert gas supply pipeline (800) via a second replacement gas pipe (309); The hydrogen side pneumatic valve body (200a) includes a fourth hydrogen side pneumatic valve body (210) arranged on the first replacement gas pipe (209), and the oxygen side pneumatic valve body (300a) includes a fourth oxygen side pneumatic valve body (310) arranged on the second replacement gas pipe (309). The fourth hydrogen side pneumatic valve body (210) corresponds to the fourth oxygen side pneumatic valve body (310) and is synchronously opened and closed through a fourth control gas circuit (900).

10. The water electrolysis hydrogen production device according to any one of claims 1-3 and 5-9, characterized in that: The hydrogen side pneumatic valve body and the oxygen side pneumatic valve body are configured as multiple pairs corresponding to each other. Each pair of the hydrogen side pneumatic valve body and the oxygen side pneumatic valve body are synchronously opened and closed through their respective corresponding control air circuits, and the air inlet end of the air main pipe of each control air circuit is connected to the same instrument air.

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