Hydrogen production plant

Abstract

The application discloses a hydrogen production equipment, which comprises a water storage tank, a heating assembly and a dry burning prevention assembly. The water storage tank is internally provided with a containing cavity. An elongated channel is arranged on the water storage tank along the radial direction of the water storage tank, and the elongated channel and the containing cavity are in communication with each other. The heating assembly comprises a heating piece, and the heating piece is at least partially located in the containing cavity and located on one side of the elongated channel close to the bottom wall of the containing cavity. The dry burning prevention assembly comprises a controller and a liquid level detection component, the liquid level detection component is arranged in the elongated channel, the liquid level detection component is at least used for detecting the liquid level height in the containing cavity, the liquid level detection component and the heating piece are electrically connected with the controller, the liquid level detection component sends the detected liquid level height to the controller, and the controller controls the heating piece through the liquid level height. The application solves the problem that the electrolyte can cause damage to the water level sensor, and when the water level sensor cannot detect the water level in the water storage tank, the electric heating rod has a dry burning risk.

Description

Technical Field

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

[0002] In the water electrolysis hydrogen production process, the temperature of the electrolyte in the storage tank needs to be maintained within a certain range to ensure high hydrogen production efficiency. Current technology involves installing electric heating rods inside the storage tank to heat the electrolyte and using a water level sensor to detect the liquid level. However, the electrolyte is highly corrosive and can damage the water level sensor. Furthermore, if the water level sensor fails to detect the water level in the storage tank, the electric heating rods risk dry-burning. Utility Model Content

[0003] The main objective of this application is to provide a hydrogen production device to solve the problem mentioned in the background art that the electrolyte can damage the water level sensor, and that the electric heating rod is at risk of dry burning when the water level sensor cannot detect the water level in the storage tank.

[0004] According to one aspect of this application, a hydrogen production apparatus is provided, comprising:

[0005] A water storage tank, wherein a receiving cavity is provided inside the water storage tank, and a slender channel is provided on the water storage tank along the radial direction of the water storage tank, the slender channel being interconnected with the receiving cavity;

[0006] A heating assembly, the heating assembly including a heating element, the heating element being at least partially located within the accommodating cavity and on one side of the elongated channel near the bottom wall of the accommodating cavity;

[0007] An anti-dry-burning component includes a controller and a liquid level detection component. The liquid level detection component is disposed in the elongated channel and is used to detect the liquid level height in the accommodating cavity. The liquid level detection component and the heating element are both electrically connected to the controller. The liquid level detection component sends the detected liquid level height to the controller, and the controller controls the heating element based on the liquid level height.

[0008] Furthermore, the water storage tank includes a cover and a tank body. The cover is fitted over the top of the tank body and is sealed to the tank body. The cover and the tank body enclose the receiving cavity. The elongated channel includes a first pipe and a second pipe. Along the height direction of the tank body, the first pipe is located close to the cover, and the second pipe is located close to the bottom wall of the receiving cavity.

[0009] The liquid level detection component includes:

[0010] A first pressure detection element is disposed in the first pipeline to detect the pressure inside the first pipeline.

[0011] A second pressure detection element is disposed in the second pipeline to detect the pressure inside the second pipeline;

[0012] The calculation module is electrically connected to the first pressure detection device, the second pressure detection device, and the controller. The calculation module calculates the liquid level height based on the signals transmitted by the first pressure detection device and the second pressure detection device, and transmits the liquid level height to the controller.

[0013] Furthermore, the first pressure detection element includes a first detection surface, which abuts against the end of the first pipe away from the tank body. The first detection surface is used to detect the pressure inside the first pipe. The cross-sectional dimension of the first pipe is smaller than the dimension of the first detection surface. The first detection surface includes a corrosion-resistant material surface.

[0014] Furthermore, the second pressure detection element includes a second detection surface, which abuts against the end of the second pipe away from the tank body. The second detection surface is used to detect the pressure inside the second pipe. The cross-sectional dimension of the second pipe is smaller than the dimension of the second detection surface. The second detection surface includes a corrosion-resistant material surface.

[0015] Furthermore, the tank body is also provided with a liquid outlet channel, which is connected to the accommodating cavity. Along the height direction of the tank body, the minimum distance between the liquid outlet channel and the bottom wall of the accommodating cavity is greater than the minimum distance between the heating element and the bottom wall of the accommodating cavity.

[0016] Furthermore, a liquid level tube is provided on the outer surface of the tank, the length of the liquid level tube extends along the height direction of the tank, and both ends of the liquid level tube are connected to the accommodating cavity.

[0017] Furthermore, the heating assembly also includes a heater, which is disposed on the outer surface of the tank and electrically connected to the controller. The heating element includes:

[0018] A heating element electrically connected to the heater, located at least partially within the accommodating cavity along the radial direction of the tank, the heating element comprising a corrosion-resistant structure.

[0019] Furthermore, a temperature sensor is provided on the tank body, and the temperature sensor is located close to the heating tube. The temperature sensor is used to detect the liquid temperature in the accommodating cavity at least once. The controller controls the heating tube according to the signal transmitted by the temperature sensor.

[0020] Furthermore, the cover is provided with a first channel, the first end of the first channel is connected to the accommodating cavity, and the second end of the first channel opposite to the first end is connected to the outside of the water storage tank.

[0021] Furthermore, the bottom wall of the accommodating cavity is provided with a second channel, which communicates with the accommodating cavity and is used at least to drain the liquid in the accommodating cavity.

[0022] In this application, when the liquid in the containment cavity cannot submerge the heating element, the liquid level detection component detects a liquid level height lower than the height of the heating element, posing a risk of dry-burning damage to the heating element. In this case, the controller can control the heating element to stop heating based on the received liquid level height, effectively preventing dry-burning damage. When the liquid in the containment cavity completely submerges the heating element, the liquid level detection component detects a liquid level height greater than the height of the heating element. In this case, the controller can control the heating element to perform heating actions based on the received liquid level height, ensuring that the liquid temperature meets the operating temperature requirements of the hydrogen production equipment and improving the hydrogen production efficiency. This application, by placing the liquid level detection component in a narrow channel to detect the liquid level in the containment cavity, effectively reduces the contact area between the liquid level detection component and the liquid in the containment cavity, effectively reducing the risk of damage to the liquid level detection component, ensuring that the liquid level detection component can more accurately detect the liquid level, preventing dry-burning damage to the heating element, extending the service life of the liquid level detection component, and improving the safety and reliability of the hydrogen production equipment. The heating element is positioned close to the bottom wall of the containment cavity, ensuring it is more easily submerged in liquid and effectively reducing the risk of dry-burning damage. Furthermore, when the heating element is activated, the heated liquid expands due to heat, decreasing its density and flowing upwards, while the cooler liquid flows downwards around the heating element, creating natural convection circulation. This natural convection circulation allows for more uniform heating of the liquid, effectively reducing localized overheating, accelerating the heating rate, and improving heating efficiency, which in turn enhances the hydrogen production efficiency of the hydrogen production equipment. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1This is a front view of the hydrogen production equipment disclosed in this application;

[0025] Figure 2 This is a schematic diagram (I) of the hydrogen production equipment disclosed in this application;

[0026] Figure 3 This is a schematic diagram (II) of the hydrogen production equipment disclosed in this application;

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 This is a cross-sectional view of the hydrogen production equipment disclosed in this application;

[0029] Figure 6 This is a schematic diagram of the structure of the second pressure detection element disclosed in this application.

[0030] The above figures include the following reference numerals:

[0031] 10. Water storage tank; 11. Receptacle cavity; 12. Slender channel; 121. First pipe; 122. Second pipe; 13. Cover; 131. First channel; 14. Tank body; 15. Limiting post; 16. Liquid outlet channel; 17. Liquid level pipe; 18. Temperature sensor; 19. Second channel; 20. Heating assembly; 21. Heating element; 22. Heater; 30. Anti-dry burning assembly; 31. Liquid level detection component; 312. Second pressure detection component; 3121. Second detection surface; 313. Calculation module; 3131. Limiting ring. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0035] like Figures 1 to 6 As shown, this application provides a hydrogen production device. The hydrogen production device includes a water storage tank 10, a heating assembly 20, and an anti-dry-burning assembly 30. The water storage tank 10 has a receiving cavity 11. Along the radial direction of the water storage tank 10 (e.g., along the radial direction of the water storage tank 10), the receiving cavity 11 is provided. Figure 1 The water tank 10 has an elongated channel 12 (the radial direction of the water tank 10 is perpendicular to its height direction, as indicated by the center arrow X). The elongated channel 12 is connected to the receiving cavity 11. The heating assembly 20 includes a heating element 21, which is at least partially located within the receiving cavity 11 and on the side of the elongated channel 12 near the bottom wall of the receiving cavity 11. The anti-dry-burning assembly 30 includes a controller and a liquid level detection component 31. The liquid level detection component 31 is located in the elongated channel 12 and is used to detect the liquid level in the receiving cavity 11. Both the liquid level detection component 31 and the heating element 21 are electrically connected to the controller. The liquid level detection component 31 sends the detected liquid level to the controller, which uses the liquid level to control the heating element 21.

[0036] In this embodiment, when the liquid in the accommodating cavity 11 cannot submerge the heating element 21, the liquid level detection component 31 detects a liquid level height lower than the height of the heating element 21, posing a risk of dry-burning damage to the heating element 21. In this case, the controller can control the heating element 21 to stop heating based on the received liquid level height, effectively preventing dry-burning damage. When the liquid in the accommodating cavity 11 completely submerges the heating element 21, the liquid level detection component 31 detects a liquid level height greater than the height of the heating element 21. In this case, the controller can control the heating element 21 to perform heating based on the received liquid level height, ensuring that the liquid temperature meets the operating temperature requirements of the hydrogen production equipment and improving the hydrogen production efficiency of the equipment. This application detects the liquid level in the accommodating cavity 11 by placing the liquid level detection component 31 in the elongated channel 12. This effectively reduces the contact area between the liquid level detection component 31 and the liquid in the accommodating cavity 11, thereby reducing the risk of corrosion damage to the liquid level detection component 31. This ensures that the liquid level detection component 31 can more accurately detect the liquid level, prevents the heating element 21 from burning out, extends the service life of the liquid level detection component 31, and improves the safety and reliability of the hydrogen production equipment. The heating element 21 is positioned close to the bottom wall of the accommodating cavity 11, ensuring that it is more easily submerged in liquid, effectively reducing the risk of dry-burning damage. Furthermore, when the heating element 21 is heating, the heated liquid expands due to heat, decreasing its density and flowing upwards. Cooler liquid flows downwards to the vicinity of the heating element 21, forming a natural convection circulation. This natural convection circulation allows the liquid to be heated more evenly, effectively reducing localized overheating, accelerating the heating rate, and improving the heating efficiency of the liquid, which is beneficial for improving the hydrogen production efficiency of the hydrogen production equipment.

[0037] The liquid within the accommodating cavity 11 is an electrolyte. Generally, the electrolyte includes one or more of potassium hydroxide, sodium hydroxide, sodium carbonate, and potassium dihydrogen phosphate. This application places the liquid level detection component 31 within the elongated channel 12, effectively reducing the corrosive effect of the electrolyte on the liquid level detection component 31, ensuring that the liquid level detection component 31 can more accurately detect the liquid level height, and preventing the heating element 21 from dry-burning and being damaged.

[0038] In one embodiment, the water storage tank 10 includes a cover 13 and a tank body 14. The cover 13 is fitted over the top of the tank body 14 and is sealed to the tank body 14. The cover 13 and the tank body 14 form a receiving cavity 11. The elongated channel 12 includes a first pipe 121 and a second pipe 122, extending along the height direction of the tank body 14 (e.g., ...). Figure 1(In the direction indicated by the middle arrow Y), the first pipe 121 is located near the cover 13, and the second pipe 122 is located near the bottom wall of the accommodating cavity 11. The liquid level detection component 31 includes a first pressure detection element, a second pressure detection element 312, and a calculation module 313. The first pressure detection element is located in the first pipe 121 to detect the pressure inside the first pipe 121. The second pressure detection element 312 is located in the second pipe 122 to detect the pressure inside the second pipe 122. The calculation module 313 is electrically connected to the first pressure detection element, the second pressure detection element 312, and the controller. The calculation module 313 calculates the liquid level height based on the signals transmitted by the first and second pressure detection elements 312 and transmits the liquid level height to the controller. The first pipe 121 is sealed to the first pressure detection element, and the second pipe 122 is sealed to the second pressure detection element 312. The cover 13 is sealed to the tank 14, ensuring that the liquid in the containment cavity 11 is protected from external dust and other impurities, and preventing the electrolyte from reacting with components in the air and affecting its performance. Good sealing also prevents the electrolyte in the storage tank 10 from overflowing, effectively preventing electrolyte leakage from causing corrosion damage to other equipment. The first pipe 121 and the second pipe 122 are spaced apart along the height of the tank 14, utilizing the space in that direction. The first pipe 121 is close to the cover 13, and the first pressure detection element is located in the first pipe 121, allowing it to detect the pressure within the first pipe 121. Along the height of the tank 14, the liquid level is no higher than the first pressure detection element. According to Pascal's law, the pressure on the liquid surface can be considered as the pressure of the gas in contact with the liquid surface, and the pressure on the liquid surface can be considered as the pressure detected by the first pressure detection element. The second pipe 122 is located near the bottom wall of the accommodating cavity 11, and the second pressure detection element 312 is disposed in the second pipe 122, so that the second pressure detection element 312 can be used to detect the pressure inside the second pipe 122. According to the liquid pressure formula P = ρgh (where P is pressure, ρ is liquid density, g is gravitational acceleration, and h is the height difference between the liquid surface and the second pipe 122), and the pressure difference between the first pipe 121 and the second pipe 122 detected by the first pressure detection element and the second pressure difference detected by the second pressure detection element 312, the calculation module 313 can accurately determine the height between the liquid surface and the second pipe 122. Combining the height of the second pipe 122 relative to the bottom wall of the accommodating cavity 11, the calculation module 313 can also obtain the liquid level height. The controller can control the heating element 21 according to the liquid level height provided by the calculation module 313. The liquid level detection method, which uses the pressure difference between the first pipe 121 and the second pipe 122, can obtain more accurate liquid level information, providing a more accurate basis for the controller to control the heating element 21 and effectively preventing the heating element 21 from being damaged by dry burning.

[0039] In addition, the first pressure detection element, the second pressure detection element 312 and the calculation module 313 are all located outside the accommodating cavity 11, which reduces the contact area between the liquid level detection element 31 and the electrolyte, reduces the risk of corrosion of the liquid level detection element 31, extends the service life of the liquid level detection element 31, and also reduces the possibility of dry burning of the heating element 21 due to corrosion of the liquid level detection element 31, thereby improving the reliability and safety of the hydrogen production equipment.

[0040] The tank body 14 is provided with a limit post 15, and the calculation module 313 is provided with a limit ring 3131 that cooperates with the limit post 15. The limit ring 3131 is sleeved on the limit post 15 to stably fix the liquid level detection component 31 on the tank body 14.

[0041] Specifically, both the tank body 14 and the cover 13 can be made of corrosion-resistant materials. For example, the tank body 14 and the cover 13 can be made of 316L stainless steel. 316L stainless steel has excellent corrosion resistance and high-temperature resistance, and can maintain stable performance in various high-temperature electrolyte environments, ensuring the operational stability of the hydrogen production equipment. 316L stainless steel also has good heat dissipation performance. During the operation of the hydrogen production equipment, the electrolyte temperature will rise, and the electrolyte temperature may exceed its optimal operating temperature. After the electrolyte is recovered into the water storage tank 10, it needs to be cooled down. The tank body 14, made of 316L material, has a certain heat dissipation function, which helps the electrolyte to quickly cool down to a suitable operating temperature.

[0042] The first pressure detection element includes a first detection surface that abuts against the end of the first pipe 121 furthest from the tank 14. The first detection surface is used to detect the pressure inside the first pipe 121. The cross-sectional dimension of the first pipe 121 is smaller than the size of the first detection surface. The first detection surface includes a corrosion-resistant material surface. The first detection surface is larger than the cross-sectional dimension of the first pipe 121. The first detection surface only needs to contact the liquid at the port of the first pipe 121 to detect the pressure inside the first pipe 121, effectively reducing the contact area between the first detection surface and the liquid. Furthermore, the use of a corrosion-resistant material on the first detection surface effectively prevents corrosion damage to the first pressure detection element caused by the electrolyte. Simultaneously, the abutment between the first detection surface and the end of the first pipe 121 furthest from the tank 14 facilitates the installation of the first pressure detection element. The first detection surface can better cover the port of the first pipe 121, forming a good seal, ensuring the accuracy of the pressure detection inside the first pipe 121, and preventing electrolyte leakage from the connection between the first detection surface and the first detection element, ensuring the accuracy of the pressure detection and avoiding damage to the first pressure detection element caused by electrolyte leakage.

[0043] The second pressure detection element 312 includes a second detection surface 3121, which abuts against the end of the second pipe 122 away from the tank 14. The second detection surface 3121 is used to detect the pressure inside the second pipe 122. The cross-sectional dimension of the second pipe 122 is smaller than the dimension of the second detection surface 3121. The second detection surface 3121 includes a corrosion-resistant material surface. The second detection surface 3121 is larger than the cross-sectional dimension of the second pipe 122. The second detection surface 3121 only needs to contact the liquid at the port of the second pipe 122 to detect the pressure inside the second pipe 122, effectively reducing the contact area between the second detection surface 3121 and the liquid. Furthermore, the use of a corrosion-resistant material on the second detection surface 3121 effectively prevents corrosion damage to the second pressure detection element 312 caused by the electrolyte. Simultaneously, the abutment between the second detection surface 3121 and the end of the second pipe 122 away from the tank 14 facilitates the installation of the second pressure detection element 312. The second detection surface 3121 can better cover the port of the second pipe 122, forming a good seal, ensuring the accuracy of pressure detection in the second pipe 122, and also preventing electrolyte leakage from the connection between the second detection surface 3121 and the second detection element, ensuring the accuracy of pressure detection, and avoiding damage to the second pressure detection element 312 caused by electrolyte leakage.

[0044] In another embodiment, a float ball can be provided in the accommodating cavity 11 to obtain the liquid level height, so as to effectively prevent the heating element 21 from being damaged by dry burning.

[0045] In one embodiment, a liquid outlet channel 16 is also provided on the tank body 14. The liquid outlet channel 16 communicates with the accommodating cavity 11. Along the height direction of the tank body 14, the minimum distance H1 between the liquid outlet channel 16 and the bottom wall of the accommodating cavity 11 is greater than the minimum distance H2 between the heating element 21 and the bottom wall of the accommodating cavity 11. When electrolyte is discharged from the liquid outlet channel 16, the electrolyte level in the water storage tank 10 will always be higher than the lowest point of the heating element 21. This ensures that the heating element 21 is always surrounded by electrolyte, avoiding dry burning due to the heating element 21 being exposed outside the electrolyte because the electrolyte level is too low. This helps to extend the service life of the heating element 21 and improve the safety and stability of the hydrogen production equipment. The heating element 21 is located below the liquid outlet channel 16, so that the electrolyte around the heating element 21 can form a relatively stable heating area. When the electrolyte flows out from the outlet channel 16, the electrolyte flow in the bottom heating area is relatively small, which helps maintain the stability of the electrolyte temperature around the heating element 21, ensuring heating efficiency and heating uniformity, thereby improving hydrogen production efficiency. If the outlet channel 16 is positioned too low, the electrolyte flow near the heating element 21 may be too frequent, and heat cannot be effectively accumulated, affecting the heating effect.

[0046] In one embodiment, a liquid level pipe 17 is provided on the outer surface of the tank body 14. The length of the liquid level pipe 17 extends along the height direction of the tank body 14, and both ends of the liquid level pipe 17 are connected to the receiving cavity 11. The liquid level pipe 17, connected to the receiving cavity 11 and extending along the height direction of the tank body 14, can visually display the liquid level of the electrolyte in the receiving cavity 11. Operators can quickly and accurately understand the liquid level of the electrolyte in the water storage tank 10 by directly observing the liquid level position in the liquid level pipe 17, further effectively preventing the heating element 21 from dry-burning and being damaged.

[0047] In one embodiment, the heating assembly 20 further includes a heater 22, which is disposed on the outer surface of the tank 14 and electrically connected to the controller. The heating element 21 includes a heating tube. The heating tube is electrically connected to the heater 22 and is located at least partially within the accommodating cavity 11 along the radial direction of the tank 14. The heating tube includes a corrosion-resistant structure. The heater 22 is disposed on the outer surface of the tank 14, and the heating tube is at least partially located within the accommodating cavity 11. The heater 22 can provide electrical energy to the heating tube, which can convert electrical energy into heat energy. The heating tube is made of corrosion-resistant material, which can effectively prevent the electrolyte from corroding and damaging the heating tube, ensuring the heating reliability of the heating tube. The heating tube is in direct contact with the electrolyte, increasing the heating area and improving the heating efficiency. It can quickly heat the electrolyte to a suitable temperature, which is beneficial to improving the reaction rate of electrolytic hydrogen production, thereby improving the hydrogen production efficiency. The heater 22 is electrically connected to the controller, which can precisely control the working state of the heater 22 according to the preset temperature value and the actual electrolyte temperature, realizing flexible adjustment of the heating process. For example, when the electrolyte temperature is lower than the set value, the controller will start the heater 22 to make the heating tube work. When the temperature reaches the set value or the liquid level is low, the controller can control the heater 22 to stop working, ensuring that the electrolyte temperature is kept within a suitable range, which is beneficial to improving the stability and controllability of the hydrogen production process.

[0048] Specifically, the heating tubes include multiple sets, which are arranged radially along the tank body 14 within the accommodating cavity 11. These multiple sets of heating tubes can also heat the electrolyte at the edge of the accommodating cavity 11, ensuring that the electrolyte can be heated quickly and more evenly.

[0049] In one embodiment, a temperature sensor 18 is installed on the tank 14, positioned close to the heating element. The temperature sensor 18 is used to detect the liquid temperature within the containment cavity 11. The controller controls the heating element based on the signal transmitted by the temperature sensor 18. The proximity of the temperature sensor 18 to the heating element allows for accurate measurement of the electrolyte temperature within the containment cavity 11 near the heating element. The temperature sensor 18 accurately acquires electrolyte temperature information, providing accurate data support for the controller. The controller's control of the heating element based on the signal transmitted by the temperature sensor 18 enables precise temperature control. When the temperature sensor 18 detects that the electrolyte temperature is below a set value, the controller increases the power or extends the heating time of the heating element to raise the electrolyte temperature. When the temperature reaches the set value, the controller reduces the power or stops heating to prevent overheating of the electrolyte. This precise temperature control helps maintain the water electrolysis hydrogen production reaction under optimal temperature conditions, improving hydrogen production efficiency and quality. Alternatively, if the controller receives an excessively high temperature signal from the temperature sensor 18, the heating element may be prone to dry burning. In this case, the controller can also stop the heating element from operating, effectively preventing damage from dry burning. The coordinated operation of the temperature sensor 18 and the controller enables automated control of the heating process. This eliminates the need for frequent manual monitoring and adjustment of the electrolyte temperature, reducing the workload and errors associated with manual operation and improving the automation level and production efficiency of the hydrogen production process.

[0050] In one embodiment, the cover 13 is provided with a first channel 131. The first end of the first channel 131 is connected to the accommodating cavity 11, and the second end of the first channel 131, opposite to the first end, is connected to the outside of the water storage tank 10. When the hydrogen production equipment is running, the liquid in the accommodating cavity 11 generates oxygen, which can be discharged from the first channel 131 to the outside of the water storage tank 10, ensuring that the pressure in the accommodating cavity 11 is not too high and ensuring that the oxygen in the accommodating cavity 11 can be delivered to the outside of the water storage tank 10 more quickly, thereby reducing the gas pressure in the accommodating cavity 11.

[0051] In one embodiment, a second channel 19 is provided on the bottom wall of the receiving cavity 11, and the second channel 19 communicates with the receiving cavity 11. The second channel 19 is at least used to drain the liquid in the receiving cavity 11. The second channel 19 on the bottom wall of the receiving cavity 11 allows for quick and convenient drainage of the liquid in the receiving cavity 11, avoiding manual scooping or other complex drainage methods, thus improving work efficiency. At the same time, this arrangement allows for the drainage of as much liquid as possible from the receiving cavity 11, facilitating subsequent cleaning and maintenance. An on / off valve can be provided on the second channel 19 to control the opening and closing of the second channel 19.

[0052] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0053] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0054] The above are merely preferred embodiments of this application and are 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 hydrogen production device, characterized in that, include: A water storage tank (10) is provided with a receiving cavity (11) inside the water storage tank (10). Along the radial direction of the water storage tank (10), a slender channel (12) is provided on the water storage tank (10), and the slender channel (12) is connected to the receiving cavity (11). Heating assembly (20), the heating assembly (20) includes a heating element (21), the heating element (21) being at least partially located within the accommodating cavity (11) and located on one side of the elongated channel (12) near the bottom wall of the accommodating cavity (11); An anti-dry-burning component (30) is provided, comprising a controller and a liquid level detection component (31). The liquid level detection component (31) is disposed in the elongated channel (12). The liquid level detection component (31) is used to detect the liquid level in the accommodating cavity (11). The liquid level detection component (31) and the heating element (21) are both electrically connected to the controller. The liquid level detection component (31) sends the detected liquid level to the controller. The controller controls the heating element (21) based on the liquid level.

2. The hydrogen production equipment according to claim 1, characterized in that, The water storage tank (10) includes a cover (13) and a tank body (14). The cover (13) covers the top of the tank body (14) and is sealed to the tank body (14). The cover (13) and the tank body (14) enclose the cavity (11). The elongated channel (12) includes a first pipe (121) and a second pipe (122). Along the height direction of the tank body (14), the first pipe (121) is located close to the cover (13), and the second pipe (122) is located close to the bottom wall of the cavity (11). The liquid level detection component (31) includes: A first pressure detection element is disposed in the first pipe (121) to detect the pressure inside the first pipe (121); A second pressure detection element (312) is disposed in the second pipe (122) for detecting the pressure inside the second pipe (122); The calculation module (313) is electrically connected to the first pressure detection element, the second pressure detection element (312) and the controller respectively. The calculation module (313) calculates the liquid level height based on the signals transmitted by the first pressure detection element and the second pressure detection element (312) and transmits the liquid level height to the controller.

3. The hydrogen production equipment according to claim 2, characterized in that, The first pressure detection element includes a first detection surface, which abuts against the end of the first pipe (121) away from the tank (14). The first detection surface is used to detect the pressure inside the first pipe (121). The cross-sectional dimension of the first pipe (121) is smaller than the dimension of the first detection surface. The first detection surface includes a corrosion-resistant material surface.

4. The hydrogen production equipment according to claim 2, characterized in that, The second pressure detection element (312) includes a second detection surface (3121), which abuts against one end of the second pipe (122) away from the tank (14). The second detection surface (3121) is used to detect the pressure inside the second pipe (122). The cross-sectional dimension of the second pipe (122) is smaller than the dimension of the second detection surface (3121). The second detection surface (3121) includes a corrosion-resistant material surface.

5. The hydrogen production equipment according to any one of claims 2 to 4, characterized in that, The tank (14) is also provided with a liquid outlet channel (16), which is connected to the accommodating cavity (11). Along the height direction of the tank (14), the minimum distance between the liquid outlet channel (16) and the bottom wall of the accommodating cavity (11) is greater than the minimum distance between the heating element (21) and the bottom wall of the accommodating cavity (11).

6. The hydrogen production equipment according to any one of claims 2 to 4, characterized in that, A liquid level pipe (17) is provided on the outer surface of the tank (14). The length of the liquid level pipe (17) extends along the height direction of the tank (14), and both ends of the liquid level pipe (17) are connected to the accommodating cavity (11).

7. The hydrogen production equipment according to any one of claims 2 to 4, characterized in that, The heating assembly (20) further includes a heater (22), which is disposed on the outer surface of the tank (14) and electrically connected to the controller. The heating element (21) includes: A heating tube electrically connected to the heater (22) is located at least partially within the accommodating cavity (11) along the radial direction of the tank body (14), and the heating tube includes a corrosion-resistant structure.

8. The hydrogen production equipment according to claim 7, characterized in that, A temperature sensor (18) is provided on the tank (14). The temperature sensor (18) is located close to the heating tube. The temperature sensor (18) is used to detect the liquid temperature in the accommodating cavity (11). The controller controls the heating tube according to the signal transmitted by the temperature sensor (18).

9. The hydrogen production equipment according to any one of claims 2 to 4, characterized in that, The cover (13) is provided with a first channel (131), the first end of the first channel (131) is connected to the accommodating cavity (11), and the second end of the first channel (131) opposite to the first end is connected to the outside of the water storage tank (10).

10. The hydrogen production equipment according to any one of claims 2 to 4, characterized in that, The bottom wall of the accommodating cavity (11) is provided with a second channel (19), which is connected to the accommodating cavity (11) and is used at least to drain the liquid in the accommodating cavity (11).

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