Hydrogen production and storage apparatus

Abstract

The utility model provides a kind of hydrogen production hydrogen storage equipment, including at least one hydrogen production module and pure water module;Every hydrogen production module includes: first support, forms a first installation space;Deionization column, is set to the bottom of first support;PEM electrolytic cell, is located in the side of deionization column;Pure water storage device includes: box, forms a second installation space;At least two liquid level sensors are respectively located in the first liquid level and second liquid level of box, and when water level reaches first liquid level or second liquid level, the trigger signal emitted by liquid level sensor located in first liquid level is opposite to the trigger signal emitted by liquid level sensor located in second liquid level, wherein first liquid level is lower than second liquid level;Water inlet hole is connected with a pure water machine to receive pure water into box;Water return hole is connected with PEM electrolytic cell.After the above technical scheme is used, it has active protection measures to prevent equipment from being damaged.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen production, and in particular to a hydrogen production and storage device. Background Technology

[0002] Currently, environmental problems caused by energy use have become a key bottleneck restricting economic and social development. Innovating energy supply models, gradually reducing dependence on fossil fuels, and vigorously promoting the development of clean and renewable energy have become a general consensus among countries worldwide regarding future energy structure adjustments. my country possesses abundant renewable energy resources; for example, the technically exploitable wind energy resources suitable for centralized development amount to 2.57 billion kW (kilowatts), and regions with abundant or relatively abundant solar energy resources account for more than two-thirds of the country's total area. However, at present, both wind and solar energy supply suffer from regional, temporal, and intermittent drawbacks. Especially when renewable energy generation is integrated into the grid, its volatility can cause significant impacts on the grid, even leading to grid paralysis in severe cases. Therefore, the problem of large-scale wind and solar power curtailment is extremely prominent.

[0003] Hydrogen energy, as an energy carrier, boasts advantages such as high energy density, high calorific value, and high conversion efficiency. It is a crucial medium for the large-scale, efficient utilization of renewable energy and is hailed as the most promising clean energy supply pathway of the 21st century. How to utilize curtailed wind and solar power to achieve hydrogen conversion and then rationally utilize this energy has become a pressing issue in the field of renewable energy.

[0004] In existing technological systems, hydrogen production and hydrogen refueling are typically separated. The general process involves: hydrogen production followed by storage in storage facilities, then transportation to a refueling station via long-tube trailers. The hydrogen is then pressurized to approximately 45 MPa by a hydrogen compression device, and finally refueled using a hydrogen refueling system. This process involves significant distances between production and refueling sites, large equipment footprints, and inconvenience due to the storage and transportation involved, resulting in low efficiency and high costs. Furthermore, while solid-state hydrogen storage-based hydrogen production and storage equipment offers higher hydrogen storage density and controllable charging and discharging performance, making hydrogen storage and utilization more efficient, safe, and reliable, it still faces numerous challenges, including system integration, thermal management, cycle life, hydrogen storage performance, and energy efficiency.

[0005] Therefore, a new type of hydrogen production and storage equipment is needed that integrates hydrogen production and storage, and has certain warning and protection functions for the amount of pure water input into it. Utility Model Content

[0006] In order to overcome the above-mentioned technical defects, the purpose of this invention is to provide a hydrogen production and storage device with active protection measures to prevent damage to the device.

[0007] This invention discloses a hydrogen production and storage device, including at least one hydrogen production module and a pure water module; Each hydrogen production module includes: The first bracket forms a first installation space; The deionization column is located at the bottom of the first support. The PEM electrolyzer is located next to the deionization column; The pure water storage device includes: The enclosure forms a second installation space; At least two liquid level sensors are respectively installed at the first liquid level and the second liquid level of the tank. When the water level reaches the first liquid level or the second liquid level, the trigger signal emitted by the liquid level sensor installed at the first liquid level is opposite to the trigger signal emitted by the liquid level sensor installed at the second liquid level, wherein the first liquid level is lower than the second liquid level. The water inlet is connected to a pure water machine to receive pure water into the tank. The return water hole connects to the PEM electrolysis cell.

[0008] Preferably, the at least two liquid level sensors include: a first liquid level sensor disposed at a first liquid level, and a second liquid level sensor disposed at a second liquid level; The first liquid level sensor includes a first main body and a first trigger part. The first trigger part is hinged to the first main body, and the rotation direction of the first trigger part is from horizontal to upward. The second liquid level sensor includes a second main body and a second trigger part. The second trigger part is hinged to the second main body, and the rotation direction of the second trigger part is horizontal from the bottom.

[0009] Preferably, the at least two liquid level sensors further include: a third liquid level sensor, disposed at a third liquid level, wherein the third liquid level is higher than the second liquid level; The third liquid level sensor includes a third main body and a third triggering part. The third triggering part is hinged to the third main body, and the rotation direction of the third triggering part is horizontal from the bottom.

[0010] Preferably, the first trigger part of the first liquid level sensor is placed horizontally; The second trigger part of the second liquid level sensor is placed at a first angle to the horizontal. The third trigger part of the third liquid level sensor is placed at a second angle to the horizontal direction, and the second angle is greater than the first angle.

[0011] Preferably, a connecting rod is also provided between the second liquid level sensor and the third liquid level sensor; One end of the connecting rod is connected to the second trigger part, and the other end of the connecting rod is connected to the third trigger part.

[0012] Preferably, one end of the connecting rod is connected to the second trigger part, close to the hinge end of the second main body part; The other end of the connecting rod is connected to the third trigger part, away from the free end of the third main body.

[0013] Preferably, the pure water storage device further includes: The water outlet extends into the PEM electrolysis cell to form a water outlet path; Drainage holes are located at the bottom of the box. Vent holes are located on the casing; and A water flow detection sensor is also installed at the end of the return water hole located at the PEM electrolysis cell to detect whether there is pure water in the pipeline connected to the return water hole.

[0014] Preferably, it further includes: At least one gas-liquid separator to separate condensate; A transparent tube is connected to a gas-liquid separator to confirm whether the prepared hydrogen contains moisture. At least two drying and regeneration units are arranged side by side downstream of the transparent tube and deliver hydrogen to the hydrogen storage cylinder.

[0015] Preferably, at least one gas-liquid separator includes a first gas-liquid separator and a second gas-liquid separator; The first gas-liquid separator includes an electrode level sensor and a drain for a solenoid valve. The electrode level sensor detects the liquid level height and sends a command to the solenoid valve to control the solenoid valve to close. The second gas-liquid separator condenses hydrogen gas through its internal cooling element; The hydrogen storage module also includes: Several hydrogen storage cylinders, manifolds, compressors, refrigeration modules, heat exchange devices, and mounting enclosures; The hydrogen storage module is located on the upper layer of the installation box. The hydrogen gas, after being dried and purified by the drying and regeneration device, is input into the hydrogen storage bottle through the manifold. The heat released when the hydrogen storage bottle absorbs hydrogen is absorbed by the evaporator and then discharged by the compressor, refrigeration module and heat exchange device.

[0016] Preferably, the drying and regeneration device has a built-in molecular sieve, and a layer of heating paper is provided on the outer layer of the sieve, and a layer of heat-insulating cotton is provided on the outer layer of the heating paper.

[0017] Compared with existing technologies, the above technical solution has the following advantages: By installing a water flow detection sensor at the return water inlet to detect whether there is water flow, the PEM electrolyzer is found to be short of water or whether there is water in the water circuit, thus avoiding the failure of the PEM electrolyzer to burn out due to lack of water. The pure water tank also has a water level detection function to prevent the pure water level from being too high or too low. The two drying and regeneration units can be used selectively, meaning that when one unit is operating normally, the other performs drying and regeneration to remove water vapor, thus avoiding downtime and improving hydrogen production efficiency and hydrogen storage performance. Attached Figure Description

[0018] Figure 1 To conform to the structural schematic diagram of the hydrogen production module in a preferred embodiment of this utility model; Figure 2 To conform to the structural schematic diagram of the liquid level sensor in a preferred embodiment of this utility model; Figure 3 This is a schematic diagram of the hydrogen production and storage device in a preferred embodiment of the present invention; Figure 4 This is a schematic diagram of the gas-water separator in a preferred embodiment of the present invention; Figure 5 This is a schematic diagram of the pure water storage device in a preferred embodiment of the present invention; Figure 6 A schematic diagram showing the position arrangement of the second and third liquid level sensors in a preferred embodiment of this utility model.

[0019] Figure label: 100-Hydrogen production and storage equipment; 110-Hydrogen production module, 111-First support, 112-Deionization column, 113-PEM electrolyzer; 120 - First liquid level sensor, 121 - First trigger unit, 122 - First main body unit; 130 - Second liquid level sensor, 131 - Second trigger unit, 132 - Second main body unit; 140 - Drainage device; 141 - Electrode level sensor; 150 - Pure water storage device, 151 - Drain hole, 152 - Vent hole. Detailed Implementation

[0020] The advantages of the present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments.

[0021] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0022] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0023] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if," as used herein, can be interpreted as "when," "in response to determination," or "when," or "in the event of a determination." In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not 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, they should not be construed as limitations on this invention.

[0024] In the description of this invention, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0025] In the following description, suffixes such as "module," "part," or "unit" used to denote elements are used only for the convenience of the description of the invention and have no specific meaning in themselves. Therefore, "module" and "part" can be used interchangeably.

[0026] See Figure 1-3This document illustrates a structural schematic diagram of a hydrogen production and storage device 100 conforming to a preferred embodiment of the present invention, as well as a structural schematic diagram of its internal hydrogen production module 110. In this embodiment, the hydrogen production and storage device 100 further includes a pure water module. Pure water from the pure water module is supplied to the hydrogen production module 110, where the hydrogen production module 110 produces the hydrogen required by the user. Specifically, the hydrogen production module 110 includes: a first support 111 forming a first installation space, within which other components of the hydrogen production module 110 can be installed; and a deionization column 112, which removes dissolved cations and anions from water using ion exchange resin to produce "deionized water" or "high-purity water," and is internally filled with a mixture of cation exchange resins (…). Type) and anion exchange resin ( Type): For use with cation exchange resins Exchange cations in water (such as ); for anion exchange resins Exchange anions in water (such as After the exchange, and Deionization is achieved by combining the generated water (H2O). Therefore, the deionization column 112 is placed at the bottom of the first support 111 to ultimately produce deionized water. The PEM electrolyzer 113, a water electrolysis hydrogen production device using a proton exchange membrane as the electrolyte, is one of the mainstream technologies for green hydrogen production. It is located next to the deionization column 112 and may include: a compression plate, usually made of aluminum alloy, used to fix the entire electrolyzer structure; an insulating layer / rubber ring, to achieve electrical insulation and sealing to prevent gas and liquid leakage; a bipolar plate (BPP), which conducts electricity, separates electrolysis units, distributes fluid and dissipates heat, and is usually made of titanium or stainless steel; and a gas diffusion layer, usually a titanium mesh or titanium felt, to promote gas diffusion. The process includes the transmission of water and gas, and the collection of current; the membrane electrode assembly (MEA), comprising a proton exchange membrane (such as a Nafion membrane) and catalyst layers coated on both sides, is the core area of ​​the electrolysis reaction; the pure water storage device includes: a tank forming a second installation space for installing other components within the pure water storage device; at least two liquid level sensors, respectively located at a first liquid level and a second liquid level in the tank, for detecting the height of the liquid level (i.e., water level) within the tank, and when the water level reaches the first liquid level or the second liquid level, the trigger signal emitted by the liquid level sensor located at the first liquid level is opposite to the trigger signal emitted by the liquid level sensor located at the second liquid level, wherein the first liquid level is lower than the second liquid level. Specifically, when the water level has not reached the first level, the trigger signal emitted by the first level sensor 120 is, for example, a high-level signal, and the trigger signal emitted by the second level sensor 130 is, for example, a low-level signal, which can be used to control the pure water input; when the water level exceeds the first level but has not reached the second level, the trigger signal emitted by the first level sensor 120 is a low-level signal, and the trigger signal emitted by the second level sensor 130 is also a low-level signal, continuing to be used to control the pure water input; when the water level reaches... When the second liquid level is reached, the trigger signal from the first liquid level sensor 120 is a low-level signal, and the trigger signal from the second liquid level sensor 130 is a high-level signal, thus stopping the input of pure water. The inlet port connects to a pure water machine to receive pure water into the tank. The return port connects to the PEM electrolyzer 113, allowing unreacted water in the PEM electrolyzer to flow back into the tank. For example, there can be four return ports, with two connected to the PEM electrolyzer and the other two to the gas-liquid separator. Therefore, through the design of the hydrogen production device and pure water storage device, and the alternating signals from the two liquid level sensors, the addition and stopping of pure water can be achieved fully automatically, eliminating the need for user control and enabling silent hydrogen production for the user.

[0027] Continue reading Figure 2The system includes at least two level sensors: a first level sensor 120 located at a first liquid level and a second level sensor 130 located at a second liquid level. Preferably, both the first level sensor 120 and the second level sensor 130 can be duckbill-type level sensors. A duckbill-type level sensor is a float-type level switch, named for its duckbill-like shape. It uses a float that moves up and down with the liquid level, driving an internal magnet to trigger a reed switch or microswitch to achieve level alarm or control functions. Specifically, the duckbill-type level sensor includes a switch structure combining a float and a reed. The float has a built-in magnet; changes in liquid level cause the float to move up and down, moving the magnet closer to or away from the reed switch, thereby connecting or disconnecting the circuit. In other words, the first liquid level sensor 120 includes a first main body 122 (used as a reed switch) and a first trigger part 121 (used as a float). The first trigger part 121 is hinged to the first main body 122, and the rotation direction of the first trigger part 121 is from horizontal to upward. The second liquid level sensor 130 includes a second main body 132 (used as a reed switch) and a second trigger part 131 (used as a float). The second trigger part 131 is hinged to the second main body 132, and the rotation direction of the second trigger part 131 is from downward to horizontal. Because the rotation direction of the first trigger part 121 and the initial position of the second trigger part 131 in their natural state are different, the trigger signals generated by the two under the same conditions are different. For example, under normal conditions, the first trigger 121 is close to the first main body 122, the circuit is connected, and a high-level signal is generated, indicating that the liquid level is too low. When the first trigger 121 is affected by the buoyancy of the rising liquid level, it rotates upward, causing the first trigger 121 to move away from the first main body 122, the circuit is disconnected, and a low-level signal is generated, indicating that pure water can continue to be accepted. Correspondingly, the second trigger 131 is affected by gravity, rotates downward and droops, causing the second trigger 131 to move away from the second main body 132, the circuit is disconnected, and a low-level signal is generated, indicating that pure water can continue to be accepted. When the second trigger 131 is affected by the buoyancy of the rising liquid level, it rotates upward, causing the second trigger 131 to move closer to the second main body 132, the circuit is connected, and a high-level signal is generated, indicating that pure water acceptance has stopped. Through the above configuration, and by placing the first liquid level sensor 120 and the second liquid level sensor 130 at different liquid level heights, different electrical signals can be generated at different liquid level heights.

[0028] Preferably, the at least two liquid level sensors further include: a third liquid level sensor (the first liquid level sensor 120 is used to control water inlet, the second liquid level sensor 130 is used to inform the user of the optimal liquid level, and the third liquid level sensor is used to prevent pure water from overflowing), located at the third liquid level, wherein the third liquid level is higher than the second liquid level; the third liquid level sensor includes a third main body and a third triggering part, the third triggering part is hinged to the third main body, and the rotation direction of the third triggering part is horizontal rotation from the bottom, that is, consistent with the trigger signal of the second liquid level sensor 130.

[0029] More specifically, the first trigger portion 121 of the first liquid level sensor 120 is placed horizontally; the second trigger portion 131 of the second liquid level sensor 130 is placed at a first angle to the horizontal direction, and preferably, see [reference needed] Figure 6 The system can be configured such that when the second trigger part 131 is close to the second main body part 132, the second trigger part 131 is higher than the second main body part 132; the third trigger part 141 of the third liquid level sensor is placed at a second angle to the horizontal direction, and the second angle is greater than the first angle. Preferably, it can be configured such that when the third trigger part is close to the third main body part, the third trigger part is higher than the third main body part. When tilted, when the liquid level rises, the rotational effect of buoyancy on the second trigger part 131 and the third trigger part will be smaller, which allows the liquid level to be controlled higher (the torque generated by buoyancy is smaller). Conversely, it can also be configured such that the second liquid level sensor 130 is placed horizontally, the third liquid level sensor is placed horizontally, and the first liquid level sensor 120 is tilted, then the liquid level can be controlled lower.

[0030] To further control and ensure that the liquid level does not become too high, a connecting rod is provided between the second liquid level sensor 130 and the third liquid level sensor. One end of the connecting rod is connected to the second trigger part 131, and the other end of the connecting rod is connected to the third trigger part. When the liquid level only reaches the second liquid level sensor 130, the rotation of the second trigger part 131 will drive the third trigger part to rotate together. When the second liquid level sensor 130 forms a high level, even though the liquid level has not yet risen to the third liquid level sensor, the third trigger part will also form a high level for the liquid level sensor, thereby controlling the liquid level cutoff position to be lower.

[0031] Furthermore, if the user needs to control the liquid level cutoff position to be lower, it can be configured such that: one end of the connecting rod is connected to the second trigger part 131, close to the hinge end of the second main body part 132; the other end of the connecting rod is connected to the third trigger part, away from the free end of the third main body part. Thus, when the liquid level rises and the buoyancy drives the second trigger part 131 to rotate, the connecting rod has a larger rotation arc length in the second trigger part 131, thereby driving the third trigger part to have a larger rotation arc length. The third liquid level sensor will generate a high-level signal earlier and stop accepting pure water.

[0032] See Figure 5 Preferably or optionally, the pure water storage device 150 further includes: a water outlet extending into the PEM electrolysis cell 113 to form a water outlet path, providing pure water to the PEM electrolysis cell 113; a drain hole 151 located at the bottom of the tank for easy maintenance, debugging, and drainage during transportation; an exhaust hole 152 located on the tank; and a water flow detection sensor is also provided at the end of the return water hole located at the PEM electrolysis cell 113 to detect whether there is pure water in the pipe connected to the return water hole. The water flow sensor is used to monitor whether there is water flow in the pipe to prevent the PEM electrolysis cell 113 from continuing to operate when the water tank is short of water, because the PEM electrolysis cell 113 is easily damaged when it is short of water. In addition, even if there is water in the water tank, there may be a situation where there is no water in the water circuit, for example, if the water pipe before entering the PEM electrolysis cell 113 leaks.

[0033] Preferably or optionally, the hydrogen production and storage device 100 further includes the following components: at least one gas-liquid separator for separating condensate; a transparent tube connected to the gas-liquid separator for determining whether the produced hydrogen still contains moisture, specifically for convenient observation of whether the gas-liquid separator is working properly, for example, when the following phenomenon occurs: due to the program setting of the gas-liquid separator drainage time, the water in the gas-liquid separator is not completely drained before the drain valve is closed, which will cause the water in the gas-liquid separator to accumulate more and more, eventually overflowing into the transparent tube, so that the user can determine whether the above situation has occurred by observing the water accumulation in the transparent tube; a drying and regeneration device, located downstream of the transparent tube, is responsible for re-drying the hydrogen, and the dried hydrogen is transported to the hydrogen storage cylinder.

[0034] from Figure 4The detailed demonstration shows that the gas-liquid separator configuration includes at least two key components: a first gas-liquid separator and a second gas-liquid separator. The first gas-liquid separator is a precision device that integrates an electrode level sensor 141 and a drain valve 140 for controlling the solenoid valve. The main function of the electrode level sensor 141 is to monitor the liquid level in real time. When the liquid level reaches a preset threshold, it immediately sends a command to the solenoid valve, causing it to open to drain the water, ensuring stable system operation. The second gas-liquid separator condenses hydrogen through its internal cooling element. Furthermore, the hydrogen production and storage device 100 also includes a hydrogen storage module. The hydrogen storage module is relatively complex, containing not only several hydrogen storage cylinders but also a manifold, compressor, cooling module, heat exchange device, and a housing to accommodate all these components. The hydrogen storage module is located on the upper layer of the housing, partly because hydrogen is lighter and rises, and partly for easy access and replacement of the storage cylinders by the user. The hydrogen gas exiting the PEM electrolyzer contains a large amount of moisture. In this embodiment, the hydrogen pipeline is first routed to the vicinity of the evaporator within the hydrogen storage module (located between the hydrogen storage bottle and the evaporator) to preliminarily cool the hydrogen gas and condense the moisture. The hydrogen is then transported to a first gas-liquid separator, a second gas-liquid separator, a transparent tube, and a drying and regeneration device for drying and purification. The dried and purified hydrogen is then fed into the hydrogen storage bottle via a manifold. The hydrogen storage bottle releases heat during hydrogen absorption, which needs to be absorbed by the evaporator to prevent the temperature of the hydrogen storage module from rising and affecting the absorption efficiency. In this module, the hydrogen storage module is located on the upper layer of the mounting housing, and its role is crucial. The hydrogen gas processed by the drying and regeneration device is then introduced into the hydrogen storage bottle for storage via the manifold. It is important to note that the hydrogen storage bottle releases heat during hydrogen absorption; this heat needs to be effectively managed to avoid adverse effects on the system. Therefore, the evaporator absorbs this heat, and then through the coordinated operation of the compressor, refrigeration module and heat exchange device, the hydrogen cylinder is cooled, which greatly improves the hydrogen filling effect and achieves effective cooling, ensuring that the entire hydrogen storage module is in the best operating condition.

[0035] In this embodiment, the gas-liquid separator, the transparent tube, and the drying and regeneration device can optionally work together to purify and dry the hydrogen. Alternatively, a separate purification and drying module can be used for hydrogen purification and drying; there is no limitation.

[0036] In addition, the drying and regeneration device contains molecular sieve adsorbent material, which is covered with a layer of heating paper, and then wrapped with a layer of insulating cotton to enhance the heat insulation effect. After the device has been running for a period of time, the molecular sieve gradually becomes saturated, and the heating and regeneration program needs to be started. The adsorbed moisture is desorbed by heating, and the generated hot steam is controlled by a valve group and discharged from the system. This embodiment uses two sets of drying and regeneration devices configured in parallel, which can be used alternately: when one set needs to regenerate molecular sieves, it automatically switches to the other set to continue working, thereby achieving uninterrupted continuous operation of the drying process. This dual-channel redundancy design ensures seamless switching between the main and backup systems, achieving maintenance-free operation during continuous operation cycles, and significantly improving the reliability of equipment operation and process stability.

[0037] It should be noted that the embodiments of the present invention have better implementability and are not intended to limit the present invention in any way. Any person skilled in the art may use the above-disclosed technical content to change or modify it into equivalent effective embodiments. However, any modifications or equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A hydrogen production and storage device, characterized in that, Includes at least one hydrogen production module and a pure water module; Each of the hydrogen production modules includes: The first bracket forms a first installation space; A deionization column is disposed at the bottom of the first support; A PEM electrolytic cell is located beside the deionization column; The pure water module includes: The enclosure forms a second installation space; At least two liquid level sensors are respectively installed at a first liquid level and a second liquid level in the tank. When the water level does not reach the first liquid level or exceeds the second liquid level, the trigger signal emitted by the liquid level sensor installed at the first liquid level is opposite to the trigger signal emitted by the liquid level sensor installed at the second liquid level, wherein the first liquid level is lower than the second liquid level. The water inlet is connected to a pure water machine to receive pure water into the tank. The return water hole is connected to the PEM electrolysis cell.

2. The hydrogen production and storage equipment as described in claim 1, characterized in that, The at least two liquid level sensors include: a first liquid level sensor disposed at the first liquid level, and a second liquid level sensor disposed at the second liquid level; The first liquid level sensor includes a first main body and a first trigger part, the first trigger part is hinged to the first main body, and the rotation direction of the first trigger part is from horizontal to upward. The second liquid level sensor includes a second main body and a second trigger part. The second trigger part is hinged to the second main body, and the second trigger part rotates horizontally from the bottom.

3. The hydrogen production and storage equipment as described in claim 2, characterized in that, The at least two liquid level sensors further include: a third liquid level sensor, disposed at a third liquid level, wherein the third liquid level is higher than the second liquid level; The third liquid level sensor includes a third main body and a third trigger part. The third trigger part is hinged to the third main body, and the rotation direction of the third trigger part is horizontal from the bottom.

4. The hydrogen production and storage equipment as described in claim 3, characterized in that, The first trigger part of the first liquid level sensor is placed horizontally; The second trigger part of the second liquid level sensor is placed at a first angle to the horizontal direction; The placement direction of the third trigger part of the third liquid level sensor is at a second angle to the horizontal direction, and the second angle is greater than the first angle.

5. The hydrogen production and storage equipment as described in claim 3, characterized in that, A connecting rod is also provided between the second liquid level sensor and the third liquid level sensor; One end of the connecting rod is connected to the second trigger part, and the other end of the connecting rod is connected to the third trigger part.

6. The hydrogen production and storage equipment as described in claim 5, characterized in that, One end of the connecting rod is connected to the second trigger part, near the hinge end of the second main body part; The other end of the connecting rod is connected to the third trigger part, away from the free end of the third main body.

7. The hydrogen production and storage equipment as described in claim 1, characterized in that, The pure water storage device also includes: The water outlet extends into the PEM electrolysis cell to form a water outlet path; A drainage hole is located at the bottom of the box body; An exhaust vent is provided on the housing. and The end of the return water hole located at the PEM electrolysis cell is also equipped with a water flow detection sensor to detect whether there is pure water in the pipeline connected to the return water hole.

8. The hydrogen production and storage equipment as described in claim 1, characterized in that, Also includes: At least one gas-liquid separator to separate condensate; A transparent tube is connected to the gas-liquid separator to confirm for the second time whether the prepared hydrogen contains moisture. At least two drying and regeneration devices are arranged side by side downstream of the transparent tube and deliver hydrogen to the hydrogen storage cylinder.

9. The hydrogen production and storage equipment as described in claim 8, characterized in that, At least one gas-liquid separator includes a first gas-liquid separator and a second gas-liquid separator; The first gas-liquid separator includes an electrode level sensor and a drain for a solenoid valve. The electrode level sensor detects the liquid level height and sends a command to the solenoid valve to control the solenoid valve to close. The second gas-liquid separator condenses hydrogen gas through its internal cooling element; The hydrogen storage module includes: Several hydrogen storage cylinders, manifolds, compressors, refrigeration modules, heat exchange devices, and mounting enclosures; The hydrogen storage module is located on the upper layer of the mounting box. The hydrogen gas, after being dried and purified by the drying and regeneration device, is input into the hydrogen storage bottle through the manifold. The heat released when the hydrogen storage bottle absorbs hydrogen is absorbed by an evaporator and then discharged by the compressor, refrigeration module and heat exchange device.

10. The hydrogen production and storage equipment as described in claim 8, characterized in that, The drying and regeneration device has a built-in molecular sieve, an outer layer of heating paper, and an outer layer of heat-insulating cotton.

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