PEM electrolytic cell anode module and PEM hydrogen production equipment

Abstract

The embodiment of the utility model provides a PEM electrolytic cell anode module and PEM hydrogen production equipment, and belongs to the technical field of hydrogen production. The PEM electrolytic cell anode module comprises a frame, an anode waterway circulation module, a hydrogen dilution module and a gas detection module, wherein the anode waterway circulation module, the hydrogen dilution module and the gas detection module are arranged on the frame; the anode waterway circulation module comprises an oxygen separation tank, a water pump, a pure water heat exchanger and a filter, a water inlet of the oxygen separation tank is communicated with an anode water outlet of the PEM electrode bath, an outlet of the oxygen separation tank is communicated with an inlet of the water pump, an outlet of the water pump is communicated with an inlet of the filter, and an outlet of the filter is communicated with an inlet of the PEM electrolytic bath; the pure water heat exchanger is arranged on a pipeline between the water pump and the filter; the hydrogen dilution module is used for diluting the concentration of hydrogen in the oxygen tank, and the gas detection module is used for at least detecting gas exhausted by the oxygen tank. The PEM electrolytic cell anode module integrates multiple functions and can meet more scene requirements.

Description

Technical Field

[0001] This application relates to the field of hydrogen production technology, and more specifically, to a PEM electrolyzer anode module and a PEM hydrogen production device. Background Technology

[0002] PEM (Proton Exchange Membrane) water electrolysis for hydrogen production is a technology that uses pure water as a raw material. A proton exchange membrane (PEM) is used as the diaphragm, with a catalyst coated on its surface. Under the influence of direct current, pure water is reacted into hydrogen and oxygen. The PEM PEM is made of perfluorosulfonic acid, which effectively prevents electron conduction and blocks gas crosstalk between the anode and cathode. PEM water electrolysis technology has strong anti-interference characteristics and can be adapted to unstable power outputs such as photovoltaic, wind, and tidal power generation, enabling green hydrogen production at its source.

[0003] In PEM hydrogen production technology, the electrolyzer produces oxygen at the anode and hydrogen at the cathode, thus producing hydrogen energy. However, current PEM hydrogen production equipment is not yet perfect. PEM hydrogen production equipment generally integrates multiple devices into a container, resulting in large size and difficulties in replacement and maintenance. Therefore, a modular design for PEM hydrogen production equipment is particularly important. Utility Model Content

[0004] This application provides a PEM electrolyzer anode module and a PEM hydrogen production device. The PEM electrode cell anode module is modularly designed and multifunctionally integrated to meet the needs of more scenarios.

[0005] In a first aspect, embodiments of this application provide an anode module for a PEM electrolyzer. The anode module includes a frame, an anode water circulation module, a hydrogen dilution module, and a gas detection module, all of which are housed within the frame. The anode water circulation module includes an oxygen tank, a water pump, a pure water heat exchanger, and a filter. The inlet of the oxygen tank is connected to the anode outlet of the PEM electrode cell, the outlet of the oxygen tank is connected to the inlet of the water pump, the outlet of the water pump is connected to the inlet of the filter, and the outlet of the filter is connected to the inlet of the PEM electrolyzer to form an anode circulation water path. The pure water heat exchanger is installed on the pipeline between the water pump and the filter to regulate the water temperature in the anode circulation water path and maintain it within a preset range. The hydrogen dilution module is used to dilute the concentration of hydrogen in the oxygen tank, and the gas detection module is used to detect at least the gas discharged from the oxygen tank.

[0006] In this design, the anode water circulation module, hydrogen dilution module, and gas detection module are all housed within a frame, achieving a modular design for the entire anode module. The anode water circulation module includes an oxygen tank, a water pump, a pure water heat exchanger, and a filter. The inlet of the oxygen tank is connected to the anode outlet of the PEM electrode cell, the outlet of the oxygen tank is connected to the inlet of the water pump, the outlet of the water pump is connected to the inlet of the filter, and the outlet of the filter can be connected to the inlet of the PEM electrolysis cell, thus forming the anode circulation water path. The filter removes impurities from the water, purifying the water in the anode circulation water path. The water pump provides power to circulate the water in the anode circulation water path. The pure water heat exchanger, located on the pipeline between the water pump and the filter, controls and maintains the water temperature in the anode circulation water path within a preset range, achieving heat exchange. The hydrogen dilution module dilutes the hydrogen concentration in the oxygen tank, achieving hydrogen dilution and ensuring higher safety for gas emissions from the oxygen tank. The gas detection module can detect at least the gas discharged from the oxygen distribution tank. Therefore, the anode module integrates the anode water circulation module, hydrogen dilution module, and gas detection module into one unit, giving it anode water circulation function, water purification function, gas detection function, hydrogen dilution function, and heat exchange function. This multi-functional integration offers high flexibility and can meet the needs of more scenarios.

[0007] In some embodiments, a partition plate is provided inside the frame, and a first gap is provided between the partition plate and one side of the frame in a first direction, so as to form a first region and a second region in the internal space of the frame. The gas detection module is located in the first region and is disposed on the partition plate, and the anode water circulation module and the hydrogen dilution module are disposed in the second region; the first direction is the width direction or the length direction of the frame.

[0008] In the above technical solution, a partition plate is set inside the frame, which divides the internal space of the frame into a first area and a second area, thereby achieving the function of partitioning. The anode water circulation module and the hydrogen dilution module are set in the second area, while the gas detection module is located in the first area and integrated on the partition plate. This is equivalent to partitioning the anode water circulation module and the hydrogen dilution module, which has high directionality, reasonable layout, and reduces the risk of personnel misoperation of the gas detection module.

[0009] In some embodiments, there is a second gap between the lower end of the partition plate and the bottom of the frame, and the anode water circulation module and the hydrogen dilution module are located on one side or below the gas detection module in the first direction.

[0010] In the above technical solution, there is a gap between the partition plate and the bottom of the frame, that is, the partition plate does not completely divide the internal space of the frame into two independent spaces. The anode water circulation module and the hydrogen dilution module can be set on one side or the lower side of the first direction of the gas detection module. While the gas detection module is spatially separated from the anode water circulation module and the hydrogen dilution module, it not only facilitates the spatial layout of the gas detection module and the anode water circulation module, but also facilitates the wiring connection between each module, making it more flexible.

[0011] In some embodiments, the PEM electrolytic cell anode module further includes a protective cover surrounding the periphery of the frame; the protective cover has an openable and closable maintenance door on at least two opposite sides in a first direction, and the maintenance door has an observation window made of transparent material.

[0012] In the above technical solution, the protective cover surrounding the frame effectively seals the outer perimeter of the frame within the PEM electrolyzer anode module, creating a relatively enclosed space and resulting in a cleaner appearance. Since the gas detection module is located on one side of the frame in the first direction, and the anode water circulation module and hydrogen dilution module are located on one or below the gas detection module in the first direction, the protective cover features openable and closable maintenance doors on at least two opposite sides in the first direction. These doors allow personnel to access the components of the anode water circulation module, hydrogen dilution module, and gas detection module for easy inspection and maintenance. Furthermore, transparent observation windows within the maintenance doors allow personnel to monitor the operational status of the internal components of the anode module in real time without opening the doors.

[0013] In some embodiments, the gas detection module includes an oxygen-hydrogen detection panel, a hydrogen-oxygen detection panel, and a leak detection panel, which are sequentially mounted on a partition plate along a second direction; the hydrogen-oxygen detection panel and the leak detection panel have sampling interfaces for communicating with a purification device at the top of the frame, and the second direction is perpendicular to the first direction.

[0014] In the above technical solution, the oxygen-hydrogen detection panel, hydrogen-oxygen detection panel, and leak detection panel in the gas detection module are all sequentially distributed on the partition plate, providing strong directionality and reducing the risk of human error. Maintenance personnel only need to open the corresponding maintenance door during inspection and maintenance. Furthermore, the gas detection module includes multiple detection panels; the oxygen-hydrogen detection panel can detect the hydrogen content in the gas discharged from the oxygen vent of the oxygen distribution tank. Through the installation of the hydrogen-oxygen detection panel and the leak detection panel, and by connecting to external purification equipment via the sampling interface, gas sampling and detection of the purification equipment can be achieved. This eliminates the need for additional gas detection components in the purification equipment, diversifying the gas detection functions and making the gas detection capabilities of the PEM electrolyzer anode module more comprehensive.

[0015] In some embodiments, the hydrogen dilution module includes an air filter and an oxygen extraction fan. The air filter is installed on the extraction pipe of the oxygen extraction fan to filter the gas extracted by the oxygen extraction fan. The outlet of the oxygen extraction fan is connected to the interior of the oxygen distribution tank.

[0016] In the above technical solution, since the water discharged from the anode outlet of the PEM electrolyzer into the oxygen distribution tank contains oxygen and a small amount of hydrogen, the exhaust pipe of the oxygen extraction fan in the hydrogen dilution module is connected to the atmosphere. An air filter is installed on the exhaust pipe of the oxygen extraction fan. The air filter has the function of purifying air and can filter the gas extracted by the oxygen extraction fan. The gas extracted by the oxygen extraction fan enters the oxygen distribution tank, which can dilute the gas inside the oxygen distribution tank and reduce the concentration of hydrogen in the oxygen distribution tank. The oxygen exhaust port of the oxygen distribution tank is connected to the atmosphere, making the exhaust safer.

[0017] In some embodiments, a pure water inlet is provided at the top of the frame, one end of which is connected to the oxygen tank; a three-way valve is provided on the circulating water pipeline of the pure water heat exchanger, the three-way valve having a first interface and a second interface, the first interface and the second interface being located at the top of the frame.

[0018] In the above technical solution, one end of the pure water supply port is connected to the oxygen separation tank. Through the pure water supply port located at the top of the frame, pure water can be supplied to the oxygen separation tank after being connected to an external pure water device. A three-way valve is installed on the circulating water pipeline of the pure water heat exchanger. The first and second ports of the three-way valve are located at the top of the frame. Taking into account and utilizing the actual conditions at the customer's site, especially in cases where there are already cooling radiators or cooling towers on site, the first and second ports of the three-way valve can be connected to external cooling radiators or cooling towers to regulate and control the temperature of the entire anode water circuit, thereby meeting the optimal operating conditions of the electrolytic cell. Furthermore, the sampling port, pure water supply port, and three-way valve ports are all located at the top of the frame, with a relatively concentrated distribution of ports for convenient external connections.

[0019] In some embodiments, a vortex flow meter and a conductivity meter are installed on the pipeline between the outlet of the water pump and the filter; a deionization pipeline is connected in parallel between the vortex flow meter and the oxygen separation tank, and a deionizer is installed on the deionization pipeline.

[0020] In the above technical solution, a vortex flow meter and a conductivity meter are installed on the pipeline between the water pump outlet and the filter. The vortex flow meter can measure and detect the water flow in the anode circulating water circuit, and the conductivity meter can detect the conductivity of the water in the anode circulating water circuit. A deionization pipeline is connected in parallel between the vortex flow meter and the oxygen separation tank. The deionizer can periodically remove ions from the water in the anode circulating water circuit.

[0021] In some embodiments, the bottom of the frame is provided with multiple casters.

[0022] In the above technical solution, multiple casters are installed at the bottom of the frame. These casters allow the entire PEM electrolytic cell anode module to be moved as needed, facilitating the adjustment and installation of the entire module and providing high flexibility. Furthermore, the casters create a raised space between the bottom of the frame and the ground, allowing forklifts to access the space for loading and unloading. This raised space can also be used to lay electrical wiring harnesses and drainage pipes, enhancing its practicality.

[0023] Secondly, this application also provides a PEM hydrogen production device, which includes the PEM electrolyzer anode module of any of the foregoing embodiments.

[0024] Of course, PEM hydrogen production equipment can also include PEM electrolyzers, pure water machines, purification equipment, and DC power supplies.

[0025] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the anode module of the PEM electrolyzer provided in some embodiments of this application;

[0028] Figure 2 A side view of the PEM electrolytic cell anode module after opening the maintenance door, provided in some embodiments of this application;

[0029] Figure 3This is a side view of the PEM electrolytic cell anode module after the maintenance door is opened at another angle, according to some embodiments of this application.

[0030] Figure 4 This is a top view of the anode module of a PEM electrolyzer provided in some embodiments of this application.

[0031] Icons: 100-Anode Module; 10-Frame; 20-Anode Water Circulation Module; 21-Oxygen Tank; 211-Oxygen Exhaust Port; 22-Water Pump; 23-Pure Water Heat Exchanger; 24-Vortex Flow Meter; 25-Conductivity Detector; 26-Deionizer; 27-Three-Way Valve; 28-Filter; 30-Hydrogen Dilution Module; 31-Air Filter; 32-Oxygen Extraction Fan; 40-Gas Detection Module; 41-Oxygen-in-Hydrogen Detection Panel; 411-Oxygen-in-Hydrogen Detection Gas Exhaust Port; 42-Hydrogen-in-Oxygen Detection Panel; 421-Hydrogen-in-Oxygen Detection Gas Exhaust Port; 43-Leak Detection Panel; 431-Leak Detection Gas Exhaust Port; 50-Separator Plate; 60-Protective Cover; 61-Maintenance Door; 62-Observation Window; 70-Pure Water Inlet; 71-First Interface; 72-Second Interface; 80-Universal Wheel; X-First Direction; Y-Second Direction. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of the embodiments of this application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of this application is usually placed in when in use. It is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0036] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up" and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] Example

[0038] This application provides an embodiment of a PEM electrolytic cell anode module. Please refer to... Figures 1 to 4 The PEM electrolyzer anode module 100 includes a frame 10, an anode water circulation module 20, a hydrogen dilution module 30, and a gas detection module 40, all of which are housed within the frame 10. The anode water circulation module 20 includes an oxygen tank 21, a water pump 22, a pure water heat exchanger 23, and a filter 28. The inlet of the oxygen tank 21 is connected to the anode outlet of the PEM electrode cell, and the outlet of the oxygen tank 21 is connected to the inlet of the water pump 22. The outlet of the water pump 22 is connected to the inlet of the filter 28, and the outlet of the filter 28 is connected to the inlet of the PEM electrolyzer to form an anode circulation water path. The pure water heat exchanger 23 is installed on the pipeline between the water pump 22 and the filter 28 to regulate the water temperature in the anode circulation water path and maintain it within a preset range. The hydrogen dilution module 30 is used to dilute the hydrogen concentration in the oxygen tank 21, and the gas detection module 40 is used to detect at least the gas discharged from the oxygen tank 21.

[0039] In this design, the anode water circulation module 20, hydrogen dilution module 30, and gas detection module 40 are all housed within the frame 10, achieving a modular design for the anode module 100. The anode water circulation module 20 includes an oxygen tank 21, a water pump 22, a pure water heat exchanger 23, and a filter 28. The inlet of the oxygen tank 21 is externally connected to the anode outlet of the PEM electrode cell, and the outlet of the oxygen tank 21 is connected to the inlet of the water pump 22. The outlet of the water pump 22 is connected to the inlet of the filter 28, and the outlet of the filter 28 can be connected to the inlet of the PEM electrolysis cell, thus forming an anode circulation water path. The filter 28 filters the water to remove impurities and particles, purifying the water in the anode circulation water path. The water pump 22 provides power to circulate the water in the anode circulation water path. The pure water heat exchanger 23 is located on the pipeline between the water pump 22 and the filter 28, enabling temperature control and maintenance of the water in the anode circulation water path within a preset range, thus achieving heat exchange for the water in the anode circulation water path. The hydrogen dilution module 30 dilutes the hydrogen concentration in the oxygen tank 21, achieving a hydrogen dilution function and enhancing the safety of gas emissions from the oxygen tank 21. The gas detection module 40 can detect at least the gas emitted from the oxygen tank 21. Therefore, the anode module integrates the anode water circulation module 20, the hydrogen dilution module 30, and the gas detection module 40 into one unit, giving the anode module 100 a multi-functional integration of anode water circulation, water purification, gas detection, hydrogen dilution, and heat exchange functions. This multi-functional integration offers high flexibility and can meet the needs of more scenarios.

[0040] The dimensions of the frame 10 can be determined according to the actual situation. Optionally, the dimensions of the frame 10 can be 2100mm*1955mm*2274mm, which can meet the needs of most space arrangements. The filter 28 refers to a filter device that can filter the water in the circulating water circuit, and the filter 28 can be a Y-type filter.

[0041] In some embodiments, please combine Figure 1 and Figure 4A partition plate 50 is provided inside the frame 10, and a first distance is provided between the partition plate 50 and one side of the frame 10 in the first direction X, so as to form a first region and a second region in the internal space of the frame 10. The gas detection module 40 is located in the first region and is disposed on the partition plate 50, while the anode water circulation module 20 and the hydrogen dilution module 30 are disposed in the second region; the first direction X is the width direction or the length direction of the frame 10. By providing a partition plate 50 inside the frame 10, the partition plate 50 divides the internal space of the frame 10 into a first region and a second region, realizing the function of partitioning. The anode water circulation module 20 and the hydrogen dilution module 30 are disposed in the second region, and the gas detection module 40 is located in the first region and integrated on the partition plate 50. This is equivalent to partitioning the anode water circulation module 20 and the hydrogen dilution module 30, which has high directionality, reasonable layout, and reduces the risk of personnel misoperation of the gas detection module 40.

[0042] A partition 50 extends vertically onto the frame 10 and is fixedly connected to it. Vertically, the lower end of the partition 50 may have a gap with the bottom of the frame 10, thus the partition 50 primarily functions to divide the space of the frame 10 into a first area and a second area, while the first and second areas remain interconnected. Alternatively, the lower end of the partition 50 may extend to the bottom of the frame 10, thereby dividing the space of the frame 10 into two independent spaces.

[0043] In some embodiments, a second gap exists between the lower end of the partition plate 50 and the bottom of the frame 10. The anode water circulation module 20 and the hydrogen dilution module 30 are located on one side or below the first direction X of the gas detection module 40. The gap between the partition plate 50 and the bottom of the frame 10 means that the partition plate 50 does not completely divide the internal space of the frame 10 into two independent spaces. The anode water circulation module 20 and the hydrogen dilution module 30 can be located on one side or below the first direction X of the gas detection module 40. While the gas detection module 40 is spatially separated from the anode water circulation module 20 and the hydrogen dilution module 30, this not only facilitates the spatial layout of the gas detection module 40 and the anode water circulation module 20, but also facilitates the wiring connections and arrangements between the modules, resulting in greater flexibility.

[0044] In some embodiments, please refer to Figure 1The PEM electrolyzer anode module also includes a protective cover 60, which surrounds the periphery of the frame 10. The protective cover 60 has openable and closable maintenance doors 61 on at least two opposite sides in the first direction X, and each maintenance door 61 has an observation window 62 made of transparent material. By surrounding the frame 10 with the protective cover 60, the protective cover 60 effectively seals the outer periphery of the frame 10 within the PEM electrolyzer anode module, creating a relatively enclosed space and resulting in a cleaner appearance for the PEM electrolyzer anode module. Since the gas detection module 40 is located on one side of the frame 10 in the first direction X, and the anode water circulation module 20 and hydrogen dilution module 30 are located on one side or below the gas detection module 40 in the first direction X, the protective cover 60 has openable and closable maintenance doors 61 on at least two opposite sides in the first direction X. By opening the maintenance doors 61, personnel can expose the components of the anode water circulation module 20, hydrogen dilution module 30, and gas detection module 40, facilitating the inspection and maintenance of the components within the frame 10. A transparent observation window 62 is provided in the maintenance door 61, allowing personnel to observe the operating status of the internal components of the anode module in real time without opening the maintenance door 61.

[0045] In the case where the frame 10 is a rectangular frame structure, the protective cover 60 has four sides in the circumferential direction. The protective cover 60 has at least two openable and closable maintenance doors 61 on opposite sides in the first direction X. This means that the protective cover 60 may have maintenance doors 61 on opposite sides in the first direction X, or it may have maintenance doors 61 on three sides (including the two opposite sides in the first direction X), or each side, depending on the specific circumstances. The observation window 62 can be a transparent PVC panel.

[0046] In some embodiments, please refer to Figure 3 and Figure 4 The gas detection module 40 includes an oxygen-hydrogen detection panel 41, a hydrogen-oxygen detection panel 42, and a leak detection panel 43. The oxygen-hydrogen detection panel 41, the hydrogen-oxygen detection panel 42, and the leak detection panel 43 are sequentially mounted on the partition plate 50 along the second direction Y. The hydrogen-oxygen detection panel 42 and the leak detection panel 43 are provided with sampling interfaces for communicating with purification equipment (not shown in the figure). The second direction Y is perpendicular to the first direction X.

[0047] The oxygen-hydrogen detection panel 41, hydrogen-oxygen detection panel 42, and leak detection panel 43 in the gas detection module 40 are sequentially distributed on the partition plate 50, providing strong directionality and reducing the risk of human error. Maintenance personnel only need to open the corresponding maintenance door 61 for inspection and maintenance. Furthermore, the gas detection module 40 includes multiple detection panels. The oxygen-hydrogen detection panel 41 can detect the hydrogen content in the gas discharged from the oxygen outlet 211 of the oxygen distribution tank 21. Through the installation of the hydrogen-oxygen detection panel 42 and the leak detection panel 43, the sampling interface can be connected to external purification equipment to achieve gas sampling and detection of the purification equipment. This eliminates the need for additional gas detection components in the purification equipment, diversifying the gas detection functions and making the gas detection capabilities of the PEM electrolyzer anode module 100 more comprehensive.

[0048] like Figure 4 As shown, the oxygen-hydrogen detection panel 41 is equipped with an oxygen-hydrogen detection gas emission port 411, which allows the oxygen-hydrogen detection panel 41 to detect and release the sampled gas. The oxygen-hydrogen detection gas emission port 411 is located at the top of the frame 10. Similarly, the hydrogen-oxygen detection panel 42 is equipped with a hydrogen-oxygen detection gas emission port 421, and the leak detection panel 43 is equipped with a leak detection gas emission port 431, both located at the top of the frame 10. The multiple gas emission ports of each detection panel of the gas detection module 40 are centrally located at the top of the frame 10, making maintenance easier.

[0049] In some embodiments, please refer to Figure 2 The hydrogen dilution module 30 includes an air filter 31 and an oxygen extraction fan 32. The air filter 31 is installed on the extraction pipe of the oxygen extraction fan 32 to filter the gas extracted by the oxygen extraction fan 32. The outlet of the oxygen extraction fan 32 is connected to the interior of the oxygen distribution tank 21. Since the water discharged into the oxygen distribution tank 21 from the anode outlet of the PEM electrolyzer contains oxygen and a small amount of hydrogen, the extraction pipe of the oxygen extraction fan 32 in the hydrogen dilution module 30 is connected to the atmosphere. The air filter 31, installed on the extraction pipe of the oxygen extraction fan 32, has the function of purifying the air and can filter the gas extracted by the oxygen extraction fan 32. The gas extracted by the oxygen extraction fan 32 enters the oxygen distribution tank 21, which can dilute the gas inside the oxygen distribution tank 21 and reduce the hydrogen concentration inside the oxygen distribution tank 21. The oxygen exhaust port 211 of the oxygen distribution tank 21 is connected to the atmosphere, making the exhaust safer.

[0050] Among them, air filter 31 is also known as air filter 28, which can purify the gas.

[0051] In some embodiments, please refer to Figure 4The top of the frame 10 is also equipped with a pure water inlet 70, one end of which is connected to the oxygen separator 21. A three-way valve 27 is installed on the circulating water pipeline of the pure water heat exchanger 23. The three-way valve 27 has a first interface 71 and a second interface 72, which are located on the top of the frame 10. One end of the pure water inlet 70 is connected to the oxygen separator 21. Through the pure water inlet 70 on the top of the frame 10, pure water can be supplied to the oxygen separator 21 after connecting to an external pure water device. A three-way valve 27 is installed on the circulating water pipeline of the pure water heat exchanger 23. The first port 71 and the second port 72 of the three-way valve 27 are located at the top of the frame 10. Taking into account and utilizing the actual conditions of the customer's site, especially the situation where there is already a cooling radiator or cooling tower on site, the first port 71 and the second port 72 of the three-way valve 27 can be connected to the cold water of the cooling radiator or cooling tower to regulate and control the temperature of the entire anode water circuit to meet the optimal operating conditions of the electrolytic cell. In addition, the sampling port, the pure water supply port 70, and the ports of the three-way valve 27 are all located at the top of the frame 10, and the port positions are relatively concentrated, which facilitates external connection.

[0052] In some embodiments, please refer to Figure 3 A vortex flow meter 24 and a conductivity meter 25 are installed on the pipeline between the outlet of the water pump 22 and the filter 28. A deionization pipeline is connected in parallel between the vortex flow meter 24 and the oxygen separation tank 21, and a deionizer 26 is installed on the deionization pipeline. By installing the vortex flow meter 24 and the conductivity meter 25 on the pipeline between the outlet of the water pump 22 and the filter 28, the vortex flow meter 24 can measure and detect the water flow rate in the anode circulating water circuit, and the conductivity meter 25 can detect the conductivity of the water in the anode circulating water circuit. The deionization pipeline connected in parallel between the vortex flow meter 24 and the oxygen separation tank 21 allows the deionizer 26 to periodically remove ions from the water in the anode circulating water circuit.

[0053] In some embodiments, please refer to Figure 1 The bottom of the frame 10 is equipped with multiple casters 80. These casters 80 allow the PEM electrolytic cell anode module 100 to be moved as needed, facilitating adjustment and installation of the entire anode module 100 and offering high flexibility. Furthermore, the casters 80 create a raised space between the bottom of the frame 10 and the ground, allowing forklifts to access the space for loading and unloading, and also providing space for laying electrical wiring harnesses and drainage pipes, enhancing its practicality.

[0054] The casters 80 can be heavy-duty casters 80. The specific number of casters 80 can be determined according to the actual situation. In this embodiment, the number of casters 80 is set to four, and the four casters 80 are located at the four bottom corners of the frame 10.

[0055] The operating principle of the PEM electrolyzer anode module 100 is as follows: the outlet pipe of the PEM electrolyzer is connected to the oxygen distribution tank 21, the oxygen distribution tank 21 is connected to the water pump 22 through a pipeline, the outlet of the water pump 22 is connected to the pure water heat exchanger 23 through a pipeline, the pure water heat exchanger 23 is connected to the vortex flow meter 24 through a pipeline, the rear end of the vortex flow meter 24 is connected to the conductivity meter 25, the rear end of the conductivity meter 25 is connected to the filter 28, and the rear end of the filter 28 is connected to the water inlet of the PEM electrolyzer. The inlet of deionizer 26 is connected to the front end of vortex flow meter 24, and the outlet of deionizer 26 is connected to oxygen separator 21; the front end of air filter 31 draws air from the atmosphere, and the rear end is connected to the air inlet of oxygen extraction fan 32, the rear end of oxygen extraction fan 32 is connected to oxygen separator 21, and the oxygen discharge port 211 of oxygen separator 21 is connected to the atmosphere; the pure water supply port 70 of oxygen separator 21 is connected to a pure water machine; the other side of pure water heat exchanger 23 is connected to three-way valve 27, and three-way valve 27 is externally connected to a cooling water circulation system. The hydrogen-oxygen detection panel 42 and the leak detection panel 43 draw gas from the purification equipment for detection, and the oxygen-hydrogen detection panel 41 draws gas from the oxygen discharge port 211 of oxygen separator 21 for detection.

[0056] This application also provides a PEM hydrogen production device, which includes the PEM electrolyzer anode module 100 of any of the foregoing embodiments. The PEM hydrogen production device may also include an electrolyzer, a pure water machine, a purification device, and a DC power supply, etc.

[0057] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0058] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A PEM electrolytic cell anode module, characterized in that, It includes a frame, an anode water circulation module, a hydrogen dilution module, and a gas detection module, wherein the anode water circulation module, the hydrogen dilution module, and the gas detection module are all disposed within the frame; The anode water circulation module includes an oxygen separator, a water pump, a pure water heat exchanger, and a filter. The inlet of the oxygen separator is connected to the anode outlet of the PEM electrode cell, the outlet of the oxygen separator is connected to the inlet of the water pump, the outlet of the water pump is connected to the inlet of the filter, and the outlet of the filter is connected to the inlet of the PEM electrolysis cell to form an anode circulation water circuit. The pure water heat exchanger is installed on the pipeline between the water pump and the filter to regulate the water temperature in the anode circulation water circuit and maintain it within a preset range. The hydrogen dilution module is used to dilute the concentration of hydrogen in the oxygen separator, and the gas detection module is used to detect at least the gas discharged from the oxygen separator.

2. The PEM electrolytic cell anode module according to claim 1, characterized in that, A partition plate is provided inside the frame, and the partition plate has a first gap with one side of the frame in a first direction to form a first region and a second region in the internal space of the frame. The gas detection module is located in the first region and is disposed on the partition plate, and the anode water circulation module and the hydrogen dilution module are disposed in the second region. The first direction is the width direction or the length direction of the frame.

3. The PEM electrolytic cell anode module according to claim 2, characterized in that, There is a second gap between the lower end of the partition plate and the bottom of the frame, and the anode water circulation module and the hydrogen dilution module are located on one side or below the first direction of the gas detection module.

4. The PEM electrolytic cell anode module according to claim 3, characterized in that, The PEM electrolytic cell anode module also includes: A protective cover is provided around the periphery of the frame; the protective cover has an openable and closable maintenance door on at least two opposite sides in the first direction, and the maintenance door has an observation window made of transparent material.

5. The PEM electrolytic cell anode module according to claim 2, characterized in that, The gas detection module includes an oxygen-hydrogen detection panel, a hydrogen-oxygen detection panel, and a leak detection panel. The oxygen-hydrogen detection panel, the hydrogen-oxygen detection panel, and the leak detection panel are sequentially mounted on the partition plate along a second direction. The hydrogen-oxygen detection panel and the leak detection panel are provided with sampling interfaces for communication with the purification equipment. The second direction is perpendicular to the first direction.

6. The PEM electrolytic cell anode module according to claim 1, characterized in that, The hydrogen dilution module includes an air filter and an oxygen extraction fan. The air filter is installed on the exhaust pipe of the oxygen extraction fan to filter the gas extracted by the oxygen extraction fan. The exhaust port of the oxygen extraction fan is connected to the interior of the oxygen distribution tank.

7. The PEM electrolytic cell anode module according to claim 1, characterized in that, The top of the frame is also provided with a pure water inlet, one end of which is connected to the oxygen tank. A three-way valve is installed on the circulating water pipeline of the pure water heat exchanger. The three-way valve has a first port and a second port, which are located at the top of the frame.

8. The PEM electrolytic cell anode module according to claim 1, characterized in that, A vortex flow meter and a conductivity meter are installed on the pipeline between the outlet of the water pump and the filter. A deionization pipeline is connected in parallel between the vortex flow meter and the oxygen separator, and a deionizer is installed on the deionization pipeline.

9. The PEM electrolytic cell anode module according to claim 1, characterized in that, The bottom of the frame is equipped with multiple casters.

10. A PEM hydrogen production device, characterized in that, Includes the PEM electrolytic cell anode module according to any one of claims 1-9.

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