Photovoltaic water electrolysis hydrogen production system

Abstract

The invention relates to the technical field of water electrolysis equipment, in particular to a photovoltaic water electrolysis hydrogen production system which comprises a skid-mounted shell, and a photovoltaic power generation unit, a water electrolysis unit, a gas storage unit, a power supply and heat supply unit and a central controller are arranged in the skid-mounted shell; the water electrolysis unit comprises an electrolysis assembly, an airflow purification assembly, a vibration energy storage assembly, a temperature monitoring assembly and an air bag sealing assembly; the gas storage unit is used for storing oxygen and hydrogen electrolyzed by the water electrolysis unit; and the power supply and heat supply unit is used for converting the hydrogen in the gas storage unit into electric energy. The photovoltaic power generation module, the water electrolysis module, the solid-state gas storage module, the hydrogen fuel cell module and the waste heat heat supply module are assembled in a modularized mode, photovoltaic power generation, power supply and electrolysis of water into hydrogen and oxygen for storage can be independently completed, the hydrogen fuel cell is used, hydrogen is converted into electric power, meanwhile, working waste heat of the electrolytic cell and the fuel cell is absorbed, and energy is saved. And combined supply of hydrogen, oxygen, heat and electricity is carried out.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water electrolysis equipment, in particular to a photovoltaic water electrolysis hydrogen production system. BACKGROUND

[0002] The plateau region is rich in light resources, but the terrain is complex and the power grid is missing. The traditional photovoltaic system is difficult to support stable hydrogen production due to intermittent power generation. The environment in the plateau region is harsh, and the traditional water electrolysis hydrogen production technology is difficult to adapt to the rapid response demand of low air pressure, large diurnal temperature difference and off-grid scene. At the same time, under the condition of low pressure in the plateau region, the energy storage environment is poor. In the current hydrogen storage technology, high-pressure gaseous hydrogen storage has safety hazards, and low-temperature liquid hydrogen storage has high energy consumption; in addition, due to the thin air, oxygen scarcity and transportation difficulties in the plateau region, a safe and efficient oxygen supply solution is urgently needed. The superposition of the above technical problems causes the light resources in the plateau region to be unable to be utilized in a stable manner by electrolysis.

[0003] Therefore, it is necessary to propose a more reasonable technical solution to solve the technical problems existing in the prior art. SUMMARY

[0004] The present application aims to provide a photovoltaic water electrolysis hydrogen production system, which adjusts and optimizes the system composition structure to solve the problem of utilizing light resources by electrolysis in the plateau region in the prior art.

[0005] In order to achieve the above-mentioned purpose, the hydrogen production system disclosed by the present application can adopt the following scheme: A photovoltaic water electrolysis hydrogen production system, comprising: A skid-mounted shell, wherein a photovoltaic power generation unit, a water electrolysis unit, a gas storage unit, a power supply and heating unit, and a central controller are arranged in the skid-mounted shell, and the central controller is in communication connection with the photovoltaic power generation unit, the water electrolysis unit, the gas storage unit, and the power supply and heating unit, respectively; The photovoltaic power generation unit is used to convert solar energy into electrical energy and supply energy to the water electrolysis unit, the gas storage unit, the power supply and heating unit, and the central controller; The water electrolysis unit comprises an electrolysis assembly, an airflow purification assembly, a vibration energy storage assembly, a temperature monitoring assembly, and a gas bag sealing assembly. The electrolysis assembly is used to electrolyze water into hydrogen and oxygen. The airflow purification assembly is used to purify hydrogen and oxygen. The electrolysis assembly and the airflow purification assembly are connected to each other through a gas conveying pipeline. The vibration energy storage assembly is used to store the energy generated by the vibration of hydrogen and oxygen in the gas conveying pipeline and drive the temperature monitoring assembly and the gas bag sealing assembly to work. The temperature monitoring assembly is used to monitor the temperature during electrolysis. The gas bag sealing assembly is used to seal the gas conveying pipeline. The gas storage unit is used for storing oxygen and hydrogen electrolyzed by the water electrolysis unit respectively. The power supply and heating unit is used for converting hydrogen in the gas storage unit into electric energy.

[0006] Preferably, the gas flow purification assembly, the gas storage unit and the power supply and heating unit are sequentially connected through pipelines, and the power supply and heating unit is electrically connected with the gas storage unit.

[0007] Preferably, the photovoltaic power generation unit comprises side wing photovoltaic panels, a connecting rod mechanism one, a tree-shaped photovoltaic panel, a connecting rod mechanism two, a storage battery, a transformer one and a rectifier, the side wing photovoltaic panels are connected to both sides of the pry shell through hinges, the connecting rod mechanism one is used for adjusting the inclination angle of the side wing photovoltaic panels, the tree-shaped photovoltaic panel is provided with an extension rod at the bottom, the connecting rod mechanism two is connected with the extension rod, the direct current generated by the side wing photovoltaic panels and the tree-shaped photovoltaic panel enters the storage battery after passing through the transformer one and the rectifier, a part of the current is used for supplying energy for the central controller and the electrolysis assembly in poor light conditions, and the other part of the current directly drives the electrolysis assembly to work.

[0008] Preferably, the electrolysis assembly comprises a lye tank, a pure water tank, an electrolysis tank and an electrolysis cell, the pure water tank and the lye tank are connected with each other through pipelines and valves, the lye tank is connected with the electrolysis tank through a water inlet pipe and a water return pipe, the electrolysis tank is provided with the electrolysis cell, and the electrolysis cell is used for electrolyzing alkaline water.

[0009] Preferably, the gas flow purification assembly comprises gas flow output pipes, gas-liquid separation devices, hydrogen purification devices and oxygen purification devices, the gas flow output pipes are connected to both sides of the electrolysis tank, the gas flow output pipes on both sides are respectively connected with the gas-liquid separation devices, the gas-liquid separation devices are respectively connected with the hydrogen purification devices and the oxygen purification devices, and the gas-liquid separation devices are used for separating water in the gas flow.

[0010] Preferably, the vibration energy storage assembly comprises a mounting frame, a trigger rod, a plug, a reset spring, an energy storage box and a piezoelectric ceramic block, the mounting frame is arranged in the gas flow output pipe, the mounting frame is provided with a gas flow hole, the plug is movably connected to the gas flow hole, the plug is connected to one end of the trigger rod, the trigger rod is movably connected to the mounting frame, the other end of the trigger rod away from the plug is connected to the energy storage box, and the piezoelectric ceramic is arranged in the energy storage box. When the gas flow passes through the gas flow hole, the plug is lifted out of the gas flow hole, when the plug is lifted out of the gas flow hole, the trigger rod abuts against the piezoelectric ceramic block, and the reset spring is arranged in the energy storage box and used for driving the trigger rod to reset.

[0011] Preferably, the temperature monitoring assembly comprises an electrolytic tank temperature sensor arranged in the electrolytic tank, and the electrolytic tank temperature sensor is configured to detect the temperature of the electrolytic tank.

[0012] Preferably, the air bag sealing assembly comprises a connecting joint, a connecting rod, a piston block, a cylinder and an annular air bag, the air flow output pipe is connected to the electrolytic tank through the connecting joint, the connecting rod is arranged around the trigger rod, the connecting rod is connected with the piston block, the piston block is movably connected to the cylinder, the cylinder is connected to the annular air bag, and the annular air bag is arranged in the connecting joint.

[0013] Preferably, the gas storage unit comprises a solid-state hydrogen storage tank and a high-pressure oxygen storage tank, the solid-state hydrogen storage tank is connected to the hydrogen purification device, and the high-pressure oxygen storage tank is connected to the oxygen purification device, the solid-state hydrogen storage tank is configured to store the hydrogen generated by electrolysis, and the high-pressure oxygen storage tank is configured to store the oxygen generated by electrolysis.

[0014] Preferably, the power and heat supply unit comprises a hydrogen fuel cell, an inverter, a transformer two, a heat exchanger and a constant temperature water tank, the hydrogen fuel cell is connected to the gas outlet of the solid-state hydrogen storage tank through the gas inlet pipe, the hydrogen fuel cell is configured to convert hydrogen into electric energy, the electric energy output by the hydrogen fuel cell is adjusted and integrated by the transformer two and the inverter to form a stable current, the heat exchanger is configured to recycle the waste heat of the hydrogen fuel cell through circulating water or circulating antifreeze, and the constant temperature water tank is configured to store the water or antifreeze for circulation.

[0015] Compared with the prior art, the present application has the following advantages: the present application integrates the photovoltaic power generation, water electrolysis, solid-state gas storage, hydrogen fuel cell and waste heat supply modules into a pry housing through modularization and centralized installation, and is provided with a photovoltaic power generation system and an emergency storage battery, so that power generation and power supply can be independently completed at any time and anywhere as needed, water is electrolyzed into hydrogen and oxygen for storage, a hydrogen fuel cell is used to convert hydrogen into electric power, waste heat of the fuel cell is absorbed to realize heat and power supply, the energy generated by the output gas flow after electrolysis can be used to detect the temperature of the electrolytic tank and improve the sealing of the air flow output pipe, and the adaptability cavity is provided. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only represent some of the embodiments of the present application, and therefore should not be considered as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 The schematic diagram of the architecture of each unit of the present application.

[0018] Figure 2 The schematic diagram of the architecture of each unit of the present application.

[0019] Figure 3 The schematic diagram of the architecture of the pry shell of the present application. Figure 1 .

[0020] Figure 4 The schematic diagram of the architecture of the pry shell of the present application. Figure 2 .

[0021] Figure 5 The schematic diagram of the connection structure of the electrolysis box and the airflow output pipe of the present application.

[0022] Figure 6 The schematic diagram of the internal structure of the electrolysis box of the present application.

[0023] Figure 7 The schematic diagram of the architecture of the airflow output pipe of the present application.

[0024] Figure 8 The schematic diagram of the internal structure of the airflow output pipe of the present application.

[0025] Figure 9 The schematic diagram of the connection structure of the mounting rack, the trigger rod and the energy storage box of the present application (the energy storage box is shown in cross section).

[0026] Figure 10 The schematic diagram of the connection structure of the trigger rod, the connecting rod and the piston block of the present application.

[0027] In the diagram: 1. Skid-mounted casing; 2. Central controller; 3. Side photovoltaic panels; 4. Linkage mechanism one; 5. Tree-shaped photovoltaic panel; 6. Linkage mechanism two; 7. Battery; 8. Transformer one; 9. Rectifier; 10. Alkali tank; 11. Pure water tank; 12. Electrolysis tank; 13. Electrolytic cell; 14. Gas outlet pipe; 15. Gas-liquid separation device; 1601. Hydrogen purification device; 1602. Oxygen purification device; 17. Mounting bracket; 18. Trigger rod ; 19. Plug; 20. Return spring; 21. Energy storage box; 22. Piezoelectric ceramic block; 23. Electrolytic cell temperature sensor; 24. Connecting joint; 25. Connecting rod; 26. Piston block; 27. Cylinder; 28. Annular airbag; 29. ​​Solid hydrogen storage tank; 30. High-pressure oxygen storage tank; 31. Hydrogen fuel cell; 32. Inverter; 33. Transformer II; 34. Heat exchanger; 35. Constant temperature water tank; 501. Telescopic rod; 3401. Circulating water pump. Detailed Implementation

[0028] The following description, in conjunction with the accompanying drawings and specific embodiments, further illustrates this embodiment.

[0029] In view of the current situation where the electrolysis method cannot effectively utilize sunlight resources in high-altitude areas, the following embodiments are optimized and overcome the defects existing in the prior art.

[0030] Example 1 Please see Figures 1-10 This embodiment provides a technical solution: A photovoltaic water electrolysis hydrogen production system, as shown in the instruction manual. Figure 1 As shown, it includes: The skid-mounted housing 1 has casters at its bottom. Inside the skid-mounted housing 1 are a photovoltaic power generation unit, a water electrolysis unit, a gas storage unit, a power supply and heating unit, and a central controller 2. The central controller 2 is communicatively connected to the photovoltaic power generation unit, the water electrolysis unit, the gas storage unit, and the power supply and heating unit. The central controller 2 controls the position and angle of the movable adjustable side photovoltaic panels 3 and the tree-shaped photovoltaic panels 5 through a pre-set program, maximizing the absorption of solar radiation by the photovoltaic panels to maximize power generation and thus improve the hydrogen production efficiency of the water electrolysis unit. In this embodiment, the central controller 2 uses a PLC controller, which is a conventional technology, and its structure and features will not be described in detail. The photovoltaic power generation unit is used to convert solar energy into electrical energy and to power the water electrolysis unit, gas storage unit, power supply and heating unit and central controller 2; The electrolysis water unit comprises an electrolysis assembly, an airflow purification assembly, a vibration energy storage assembly, a temperature monitoring assembly and an airbag sealing assembly, the electrolysis assembly is used for electrolyzing water into hydrogen and oxygen, the airflow purification assembly is used for purifying the hydrogen and the oxygen, the electrolysis assembly and the airflow purification assembly are connected with each other through a gas conveying pipeline, the vibration energy storage assembly is used for storing energy generated by vibration of the hydrogen and the oxygen in the gas conveying pipeline and driving the temperature monitoring assembly and the airbag sealing assembly to work, the temperature monitoring assembly is used for monitoring temperature during electrolysis, and the airbag sealing assembly is used for sealing the gas conveying pipeline. The gas storage unit is used for respectively storing the hydrogen and the oxygen electrolyzed by the electrolysis water unit. The power supply and heating unit is used for converting the hydrogen in the gas storage unit into electric energy.

[0031] The airflow purification assembly, the gas storage unit and the power supply and heating unit are sequentially connected through pipelines, and the power supply and heating unit is electrically connected with the gas storage unit.

[0032] The photovoltaic power generation unit comprises side wing photovoltaic panels 3, a connecting rod mechanism 4, tree-shaped photovoltaic panels 5, a connecting rod mechanism 6, a storage battery 7, a transformer 8 and a rectifier 9. Figure 2 In the drawings, the reference signs “3, 5” are used to represent the side wing photovoltaic panels 3 and the tree-shaped photovoltaic panels 5, the side wing photovoltaic panels 3 and the tree-shaped photovoltaic panels 5 are both used for photovoltaic power generation, the side wing photovoltaic panels 3 are connected to both sides of the pry shell 1 through hinges, the connecting rod mechanism 4 is used for adjusting the inclination angle of the side wing photovoltaic panels 3, the connecting rod mechanism 4 comprises a motor and two transmission rods, the motor is used for driving the transmission rods to rotate, thereby driving the side wing photovoltaic panels 3 to rotate, the tree-shaped photovoltaic panels 5 are provided with telescopic rods 501 at the bottom, the connecting rod mechanism 6 is connected with the telescopic rods 501, the direct current generated by the side wing photovoltaic panels 3 and the tree-shaped photovoltaic panels 5 is directly input into the storage battery 7 through the transformer 8 and the rectifier 9, the storage battery 7 is used for supplying energy for the central controller 2 and the electrolysis assembly in rainy or night time, and the other part of current is directly input into the electrolysis assembly.

[0033] The electrolysis assembly comprises a lye tank 10, a pure water tank 11, an electrolysis tank 12 and an electrolytic cell 13. The lye tank 10 is used to store lye to enhance the conductivity of the electrolytic water, reduce the resistance in the electrolysis process, and improve the electrolysis efficiency. The lye tank 10 and the pure water tank 11 are both provided with a water level gauge for detecting the liquid level in the lye tank 10 and the pure water tank 11. The water level gauges are in communication connection with the central controller 2. The pure water tank 11 and the lye tank 10 are connected to each other through pipes and valves. The lye tank 10 is connected with the electrolysis tank 12 through a water inlet pipe and a water return pipe. The water inlet pipe is provided with a water pump. The electrolysis tank 12 is provided with the electrolytic cell 13. The electrolytic cell 13 is used to electrolyze alkaline water. In the process of electrolyzing water to produce hydrogen, the hydrogen and oxygen are not separated. The hydrogen and oxygen are generated at the two ends of the electrolytic cell 13. The hydrogen is generated at the cathode end. The hydrogen flows out together with the lye and is separated from the lye through a gas-liquid separation device 15. Then, the hydrogen is further purified through a hydrogen purification device 1601 to obtain high-purity hydrogen. The oxygen is generated at the anode end. The process of generating hydrogen at the cathode is the same as that of generating oxygen at the anode. Therefore, no further description is given.

[0034] The gas flow purification assembly comprises gas flow output pipes 14, gas-liquid separation devices 15, a hydrogen purification device 1601 and an oxygen purification device 1601. The gas flow output pipes 14 are connected to the gas outlet pipes on both sides of the electrolysis tank 12. The gas flow output pipes 14 on both sides are both connected with the gas-liquid separation devices 15. The gas-liquid separation devices 15 are used to separate the lye in the gas flow. The two gas-liquid separation devices are respectively connected with the hydrogen purification device 1601 and the oxygen purification device 1601. In this embodiment, the gas-liquid separation device 15 is a gas-liquid separator. The hydrogen purification device 1601 is a hydrogen purifier. The oxygen purification device 1601 is an oxygen purifier. The gas-liquid separator, the hydrogen purifier and the oxygen purifier are all prior art, and no further description is given.

[0035] The vibration energy storage assembly comprises a mounting frame 17, a trigger rod 18, a plug 19, a reset spring 20, an energy storage box 21 and a piezoelectric ceramic block 22. The mounting frame 17 is used to limit the movement of the trigger rod 18, so that the trigger rod 18 can only move along the axis of the airflow output pipe 14 when the plug 19 is lifted. The mounting frame 17 is arranged in the airflow output pipe 14 and is provided with an airflow hole. The plug 19 is movably connected to the airflow hole. In this embodiment, the plug 19 and the airflow hole are both in the structure of a circular truncated cone. The plug 19 is fixedly connected to one end of the trigger rod 18. The trigger rod 18 is movably connected to the mounting frame 17. The end of the trigger rod 18 away from the plug 19 is connected to the energy storage box 21. The piezoelectric ceramic block 22 is arranged in the energy storage box 21. When the airflow passes through the airflow hole, the plug 19 will be lifted out of the airflow hole. When the plug 19 is lifted out of the airflow hole, the trigger rod 18 will push against the piezoelectric ceramic block 22. After the piezoelectric ceramic block 22 is pushed, an electric current will be generated. After rectification, the electric current will be input into the driving lithium battery of the electrolytic tank temperature sensor 23. The reset spring 20 is arranged in the energy storage box 21. The two ends of the reset spring 20 are fixedly connected to the inner wall of the energy storage box 21 and the trigger rod 18, respectively. The reset spring 20 is used to drive the trigger rod 18 to reset. During the electrolysis of water, due to the fluctuation of the electric current or the local change of the electrode surface, the generation of bubbles is intermittent. These fluctuations and local electrolysis effects also cause bubbles to appear one after another instead of continuous airflow. Therefore, when outputting, the plug 19 will be lifted, reset and repeat the process continuously.

[0036] The temperature monitoring assembly comprises an electrolytic tank temperature sensor 23. The electrolytic tank temperature sensor 23 is inserted into the electrolysis box 12. The electrolytic tank temperature sensor 23 is used to detect the temperature of the electrolysis box 12.

[0037] The air bag sealing assembly comprises a connecting joint 24, a connecting rod 25, a piston block 26, an air cylinder 27 and an annular air bag 28. The connecting joint 24 is used to connect the airflow output pipe 14 and the air outlet pipe of the electrolytic tank 13. The airflow output pipe 14 is connected to the electrolytic tank 13 through the connecting joint 24. The connecting rod 25 is arranged around the trigger rod 18. The connecting rod 25 is used to connect the piston block 26 and the trigger rod 18. The connecting rod 25 is connected with the piston block 26. The piston block 26 is movably connected to the air cylinder 27. The air outlet end of the air cylinder 27 is connected to the annular air bag 28. The annular air bag 28 is arranged in the connecting joint 24. The annular air bag 28 is provided with a pressure relief valve. The pressure relief valve is used to open when the pressure of the annular air bag 28 reaches a set value, so as to prevent the internal air pressure of the annular air bag 28 from being too high.

[0038] The gas storage unit includes a solid hydrogen storage tank 29 and a high-pressure oxygen storage tank 30. The solid hydrogen storage tank 29 is connected to the hydrogen purification device 1601 and is used to store the hydrogen electrolyzed. The high-pressure oxygen storage tank 30 is connected to the oxygen purification device 1602 and is used to store the oxygen electrolyzed. In this embodiment, the shell of the solid hydrogen storage tank 29 is provided with an air inlet and an air outlet on both sides, and a hydrogen circulation valve is arranged at the air inlet and the air outlet. The solid hydrogen storage tank 29 is sequentially provided with a thermal insulation material layer, a solid hydrogen storage material layer, and a heating film. Temperature sensors and pressure sensors are arranged in the solid hydrogen storage tank 29 and the high-pressure oxygen storage tank 30, and the temperature sensors and the pressure sensors are in communication connection with the central controller 2. The solid hydrogen storage material is a metal hydride alloy (in this embodiment, LaNi5, TiMn 1-5 / TiCr2, Mg2Ni / MgH2, ZrV2 / ZrCr2, etc. can be used for hydrogen storage), and the metal hydride alloy is in a porous granular form and is filled in the solid hydrogen storage tank 29. An expansion buffer layer is arranged between the porous particles, and the expansion buffer layer is a flexible graphite material.

[0039] The power supply and heating unit includes a hydrogen fuel cell 31, an inverter 32, a transformer two 33, a heat exchanger 34, and a constant temperature water tank 35. The hydrogen fuel cell 31 is connected to the air outlet of the solid hydrogen storage tank 29 through an air inlet pipe. The hydrogen fuel cell 31 is used to convert hydrogen into electrical energy. The electrical energy output by the hydrogen fuel cell 31 is adjusted and integrated by the inverter 32 and the transformer two 33 to form a stable current. The heat exchanger 34 is used to recover the waste heat of the hydrogen fuel cell 31 by circulating water or circulating antifreeze and store the waste heat in the constant temperature water tank 35. The process is driven by a circulating water pump 3401 as shown in the accompanying drawings. In this embodiment, the water in the constant temperature water tank 35 can be directly input into the room for heating. The constant temperature water tank 35 is used to store water or antifreeze for circulation. A temperature sensor is arranged in the constant temperature water tank 35 to detect the water temperature of the constant temperature water tank 35 as shown in the accompanying drawings. In actual use, the constant temperature water tank 35 is not only used for heating by the hydrogen fuel cell, but also needs to discharge a large amount of heat generated during the operation of the electrolytic tank 13. Therefore, a water circulation system (not shown in the accompanying drawings) is also arranged in the electrolytic tank 13 to discharge the heat generated during the operation of the electrolytic tank 13, and the heat carried out can directly change the circulating water into hot water. Figure 2 Figure 2

[0040] ​​Working principle: in use, the operation is converted into electrical energy by the photovoltaic power generation unit, and the photovoltaic fluctuating current is converted into smooth direct current by the transformer and rectifier 9, part of the direct current is stored by the storage battery 7 and input into the central controller 2, another part of the direct current directly drives the electrolysis assembly to prepare hydrogen and oxygen, the prepared hydrogen and oxygen are output through the gas flow output pipe 14, after separation through the gas-liquid separation device 15, hydrogen purification device 1601 and oxygen purification device 1602, the hydrogen and oxygen are respectively stored in the solid-state hydrogen storage tank 29 and the high-pressure oxygen storage tank 30, the oxygen in the high-pressure oxygen storage tank 30 can be used as oxygen supply in plateau area, through the setting of the high-pressure oxygen storage tank 30, oxygen can be directly produced and stored under high pressure when the photovoltaic water electrolysis hydrogen production system is in use, and an end device (such as a small oxygen inhalation bottle corresponding to the oxygen tank) can be added for use, so that the hydrogen produced can be used immediately, solving the problem of oxygen deficiency and transportation bottleneck in plateau area, the hydrogen in the solid-state hydrogen storage tank 29 is used for energy supply of the hydrogen fuel cell 31, transformer two 33 is a DC-PC converter, the electrical energy output by the hydrogen fuel cell 31 is adjusted and integrated through transformer two 33 and inverter 32 to form a stable current which can be output, and the waste heat of the hydrogen fuel cell 31 during operation is recycled by the heat exchanger 34. When output, the airflow will continuously lift the plug 19, so that the trigger rod 18 presses the piezoelectric ceramic block 22, the current generated by the piezoelectric ceramic block 22 is input into the energy supply lithium battery of the electrolytic tank temperature sensor 23 after rectification, and drives the electrolytic tank temperature sensor 23 to work through the lithium battery, detects the temperature of the electrolytic tank 13 in real time and feeds back to the central controller 2 for monitoring, at the same time, when the trigger rod 18 moves, the piston block 26 will move along the cylinder 27 to enhance the sealing effect of the annular air bag 28 on the gas flow output pipe 14.

[0041] The above is the embodiment of the embodiment; but the embodiment is not limited to the above optional embodiment; those skilled in the art can obtain other various embodiments by arbitrarily combining the above methods; anyone can obtain other various forms of embodiments under the inspiration of the embodiment. The above specific embodiments should not be understood as limiting the protection scope of the embodiment; the protection scope of the embodiment should be defined by the claims.

Claims

1. A photovoltaic water electrolysis hydrogen production system, characterized in that, include: A skid-mounted housing (1) is provided inside which a photovoltaic power generation unit, an electrolysis water unit, a gas storage unit, a power supply and heating unit and a central controller (2) are provided. The central controller (2) is communicatively connected to the photovoltaic power generation unit, the electrolysis water unit, the gas storage unit and the power supply and heating unit respectively. The photovoltaic power generation unit is used to convert solar energy into electrical energy and supply energy to the water electrolysis unit, the gas storage unit, the power supply and heating unit and the central controller (2); The water electrolysis unit includes an electrolysis component, a gas flow purification component, a vibration energy storage component, a temperature monitoring component, and an airbag sealing component. The electrolysis component is used to electrolyze water into hydrogen and oxygen. The gas flow purification component is used to purify the hydrogen and oxygen. The electrolysis component and the gas flow purification component are interconnected through a gas delivery pipeline. The vibration energy storage component is used to store the energy generated by the vibration of hydrogen and oxygen in the gas delivery pipeline and to drive the temperature monitoring component and the airbag sealing component to work. The temperature monitoring component is used to monitor the temperature during electrolysis, and the airbag sealing component is used to seal the gas delivery pipeline. The gas storage unit is used to store the oxygen and hydrogen produced by the water electrolysis unit, respectively. The power supply and heating unit is used to convert hydrogen in the gas storage unit into electrical energy or heat energy.

2. The photovoltaic water electrolysis hydrogen production system according to claim 1, characterized in that: The gas purification component, gas storage unit, and power supply and heating unit are connected in sequence through pipelines, and the power supply and heating unit is electrically connected to the gas storage unit.

3. The photovoltaic water electrolysis hydrogen production system according to claim 1, characterized in that: The photovoltaic power generation unit includes a side-wing photovoltaic panel (3), a first linkage mechanism (4), a tree-shaped photovoltaic panel (5), a second linkage mechanism (6), a storage battery (7), a first transformer (8), and a rectifier (9). The side-wing photovoltaic panel (3) is connected to both sides of the skid-mounted housing (1) by hinges. The first linkage mechanism (4) is used to adjust the tilt angle of the side-wing photovoltaic panel (3). The bottom of the tree-shaped photovoltaic panel (5) is provided with a telescopic rod (501). The second linkage mechanism (6) is connected to the telescopic rod (501). The DC power generated by the side-wing photovoltaic panel (3) and the tree-shaped photovoltaic panel (5) enters the storage battery (7) after passing through the first transformer (8) and the rectifier (9). The storage battery (7) is used to power the central controller (2) and the electrolytic component when the light conditions are poor. The other part of the current directly drives the electrolytic component to work.

4. The photovoltaic water electrolysis hydrogen production system according to claim 1, characterized in that: The electrolysis assembly includes an alkali tank (10), a pure water tank (11), an electrolysis tank (12), and an electrolytic cell (13). The pure water tank (11) and the alkali tank (10) are connected to each other through pipes and valves. The alkali tank (10) is connected to the electrolysis tank (12) through an inlet pipe and a return pipe. An electrolytic cell (13) is provided inside the electrolysis tank (12). The electrolytic cell (13) is used to electrolyze alkaline water.

5. The photovoltaic water electrolysis hydrogen production system according to claim 4, characterized in that: The gas flow purification assembly includes a gas flow output pipe (14), a gas-liquid separation device (15), a hydrogen purification device (1601), and an oxygen purification device (1602). The gas flow output pipe (14) is connected to both sides of the electrolysis tank (12). The gas flow output pipes (14) on both sides are respectively connected to the gas-liquid separation devices (15). The two gas-liquid separation devices (15) are respectively connected to the hydrogen purification device (1601) and the oxygen purification device (1602). The gas-liquid separation device (15) is used to separate the moisture in the gas flow.

6. The photovoltaic water electrolysis hydrogen production system according to claim 5, characterized in that: The vibration energy storage assembly includes a mounting bracket (17), a trigger rod (18), a plug (19), a return spring (20), an energy storage box (21), and a piezoelectric ceramic block (22). The mounting bracket (17) is disposed inside the airflow output pipe (14). The mounting bracket (17) is provided with an airflow hole. The plug (19) is movably connected to the airflow hole. The plug (19) is connected to one end of the trigger rod (18). The trigger rod (18) is movably connected to the mounting bracket (17). One end of the rod (18) away from the plug (19) is connected to the energy storage box (21). The piezoelectric ceramic is disposed in the energy storage box (21). When the airflow passes through the airflow hole, it will push the plug (19) out of the airflow hole. When the plug (19) is pushed out of the airflow hole, the trigger rod (18) will press against the piezoelectric ceramic block (22). The reset spring (20) is disposed in the energy storage box (21). The reset spring (20) is used to drive the trigger rod (18) to reset.

7. The photovoltaic water electrolysis hydrogen production system according to claim 6, characterized in that: The temperature monitoring component includes an electrolytic cell temperature sensor (23), which is disposed in the electrolytic tank (12) and is used to detect the temperature of the electrolytic tank (12).

8. The photovoltaic water electrolysis hydrogen production system according to claim 7, characterized in that: The airbag sealing assembly includes a connecting joint (24), a connecting rod (25), a piston block (26), a cylinder (27), and an annular airbag (28). The airflow output pipe (14) is connected to the electrolytic cell (13) through the connecting joint (24). The connecting rod (25) is arranged around the trigger rod (18). The connecting rod (25) is connected to the piston block (26). The piston block (26) is movably connected to the cylinder (27). The cylinder (27) is connected to the annular airbag (28). The annular airbag (28) is located at the connecting joint (24).

9. The photovoltaic water electrolysis hydrogen production system according to claim 5, characterized in that: The gas storage unit includes a solid hydrogen storage tank (29) and a high-pressure oxygen storage tank (30). The solid hydrogen storage tank (29) is connected to the hydrogen purification device (1601), and the high-pressure oxygen storage tank (30) is connected to the oxygen purification device (1602). The solid hydrogen storage tank (29) is used to store the electrolyzed hydrogen, and the high-pressure oxygen storage tank (30) is used to store the electrolyzed oxygen.

10. The photovoltaic water electrolysis hydrogen production system according to claim 9, characterized in that: The power supply and heating unit includes a hydrogen fuel cell (31), an inverter (32), a transformer (33), a heat exchanger (34), and a constant temperature water tank (35). The hydrogen fuel cell (31) is connected to the outlet of the solid hydrogen storage tank (29) through an air inlet pipe. The hydrogen fuel cell (31) is used to convert hydrogen into electrical energy. The electrical energy output by the hydrogen fuel cell (31) is adjusted and integrated by the transformer (33) and the inverter (32) to form a stable current. The heat exchanger (34) is used to recover the waste heat of the hydrogen fuel cell (31) through circulating water or circulating antifreeze. The constant temperature water tank (35) is used to store water or antifreeze for circulation.

Images