Water tank and electrolytic hydrogen production equipment

Abstract

The utility model provides a water tank which comprises a first water tank and a second water tank, a first liquid outlet is formed in the bottom of the first water tank, a first liquid inlet is formed in the top of the second water tank, the first liquid inlet and the first liquid outlet are connected through a first control valve, and the first control valve is used for controlling the first liquid inlet and the first liquid outlet to be communicated or closed. A sprayer is arranged at the top of the inner cavity of the first water tank, and when the inner cavity of the first water tank is cleaned, the sprayer is started to spray cleaning liquid to clean the inner cavity of the first water tank. According to the water tank, the interior of the water tank is cleaned through the sprayers, cleaning is convenient, and manual work is not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of water electrolysis hydrogen production, especially to a water tank and electrolytic hydrogen production equipment. BACKGROUND

[0002] Water electrolysis hydrogen production technology usually refers to the technology that hydrogen is produced after electrolysis of liquid containing electrolyte. The water providing electrolyte is usually desalted water (or deionized water), and for different water electrolysis technology routes, two kinds of liquid with different properties can be formed and input into electrolytic devices, one of which is alkaline ion water (30% KOH or 20% NaOH), and the other is pure water.

[0003] In the equipment for electrolytic hydrogen production, a water tank is usually configured, which is used for configuring alkaline electrolyte and pure water. In the process of electrolytic water hydrogen production, as the water in the water tank is recycled and stored for a long time, impurities in the water will gradually adhere to the inner cavity wall of the water tank and precipitate to the bottom of the water tank, and a layer of dirt will be formed on the inner cavity wall and the bottom of the water tank after long-term use. At present, the cleaning method is manual flushing, and then the sewage is discharged from the water tank. This cleaning method is not convenient and occupies manpower. UTILITY MODEL CONTENT

[0004] The technical purpose of the utility model is to provide a water tank, which aims to solve the problems of inconvenient cleaning of the water tank and occupation of manpower.

[0005] To solve the above technical problems, the utility model provides a water tank, which comprises a first water tank and a second water tank, the bottom of the first water tank is provided with a first liquid outlet, the top of the second water tank is provided with a first liquid inlet, the first liquid inlet and the first liquid outlet are connected through a first control valve, the first control valve is used for controlling the communication or closing of the first liquid inlet and the first liquid outlet, the top of the inner cavity of the first water tank is provided with a sprayer, and when the inner cavity of the first water tank is cleaned, the sprayer is opened to spray cleaning liquid to clean the inner cavity of the first water tank.

[0006] Further, the bottom of the first water tank is provided with a drainage part, the drainage part is funnel-shaped, and the first liquid outlet is arranged at the bottom end of the drainage part; and / or

[0007] The top of the first water tank is provided with a material inlet; and / or

[0008] The top of the first water tank is provided with a liquid return port.

[0009] Further, the water tank is provided with a first connecting pipeline, one end of the first connecting pipeline is connected with the sprayer, the other end of the first connecting pipeline is connected with a cleaning liquid supply source, the first connecting pipeline is provided with a booster pump, and the booster pump is used for conveying the cleaning liquid.

[0010] Further, the pressure of the booster pump is 5-7 bar.

[0011] Further, the first control valve is a three-way valve, and the first control valve comprises a first connecting port, a second connecting port and a third connecting port.

[0012] The water tank is provided with a delivery pipe, the first connecting port is connected with the first liquid inlet, the second connecting port is connected with the first liquid outlet, and the third connecting port is connected with the delivery pipe.

[0013] Further, the first water tank is provided with a first liquid level sensor, and the first liquid level sensor is used for detecting the liquid level of the first water tank.

[0014] The first water tank is provided with a first liquid level sensor and a second liquid outlet, the second liquid outlet is provided with a second control valve, the first liquid level sensor is used for detecting the liquid level of the first water tank, and the first liquid level sensor is connected with the first control valve and the second control valve.

[0015] Further, the second water tank is provided with a second liquid level sensor, and the second liquid level sensor is used for detecting the liquid level of the second water tank.

[0016] The second water tank is provided with a second liquid level sensor and a blowdown port, the blowdown port is provided with a third control valve, the second liquid level sensor is used for detecting the liquid level of the second water tank, and the second liquid level sensor is connected with the third control valve.

[0017] Further, the bottom end of the first water tank and the top end of the second water tank are connected, and the bottom end of the first water tank and the top end of the second water tank are connected through a hinge structure or a rotating shaft structure, and the first water tank can rotate relative to the second water tank.

[0018] Further, the edge of the bottom end of the first water tank is provided with a first connecting part, the edge of the top end of the second water tank is provided with a second connecting part, the first connecting part and the second connecting part are matched and connected.

[0019] The first water tank and the second water tank are provided with a containing cavity.

[0020] The utility model discloses a kind of electrolytic hydrogen production equipment, and the electrolytic hydrogen production equipment includes the water tank as described in any one of above embodiments, and the water tank is used to store electrolyte, to supply the electrolytic hydrogen production equipment.

[0021] The utility model discloses a water tank, water tank includes first water tank and second water tank, and the bottom of first water tank is equipped with first liquid outlet, and the top of second water tank is equipped with first liquid inlet, and first liquid inlet and first liquid outlet are connected through first control valve, and first control valve is used for controlling first liquid inlet and first liquid outlet to communicate or close, and the top of first water tank inner chamber is equipped with sprayer, when washing first water tank inner chamber, sprayer opens to wash first water tank inner chamber with the spray cleaning fluid. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the overall structure schematic diagram of water tank in the utility model embodiment;

[0023] Figure 2 It is Figure 1 The top view of

[0024] Figure 3 It is the structure schematic diagram that first water tank rotates relative to second water tank in the utility model embodiment;

[0025] Figure 4 It is the simple schematic diagram of water tank water flow direction in the utility model embodiment.

[0026] In the drawings, various reference signs represent: 1, first water tank;11, first liquid outlet;12, drainage part;13, inlet;14, return liquid port;15, first liquid level sensor;16, second liquid outlet;161, second control valve;17, first connecting part;2, second water tank;21, first liquid inlet;22, second liquid level sensor;23, blowdown;231, third control valve;24, second connecting part;31, first control valve;32, first connecting pipeline;321, booster pump;33, rotating shaft structure;34, containing cavity;4, sprayer;41, spray liquid injection port;42, spray liquid cavity;5, conveying pipe;51, outlet. DETAILED DESCRIPTION

[0027] The embodiments of the utility model will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as limiting the utility model, and all other embodiments obtained by those skilled in the art without creative labor based on the embodiments in the utility model belong to the scope protected by the utility model.

[0028] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential" and "radial" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model in that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0029] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0030] In the electrolytic hydrogen production equipment, a water tank is usually configured to configure alkaline electrolyte and pure water. In the process of electrolytic hydrogen production, as the water in the water tank is recycled and stored for a long time, impurities in the water will gradually adhere to the inner wall of the water tank and precipitate to the bottom of the water tank. After long-term use, a layer of dirt will be formed on the inner wall and the bottom of the water tank. At present, the cleaning method is artificial flushing, and the sewage is discharged from the water tank. This cleaning method is inconvenient and occupies manpower.

[0031] In view of the above technical problems, the utility model provides a water tank, which aims to solve the problem of inconvenient cleaning of the water tank and occupation of manpower.

[0032] As shown in the accompanying Figure 1 , it is the overall structure schematic view of the water tank in the utility model embodiment; as shown in the accompanying Figure 2 , it is Figure 1 the top view. As shown in the accompanying Figures 1-2 , the water tank comprises a first water tank 1 and a second water tank 2, the first water tank 1 is provided with a first liquid outlet 11 at the bottom, the second water tank 2 is provided with a first liquid inlet 21 at the top, the first liquid inlet 21 and the first liquid outlet 11 are connected through a first control valve 31, the first control valve 31 is used to control the communication or closing of the first liquid inlet 21 and the first liquid outlet 11, and the first water tank 1 is provided with a sprayer 4 at the top of the inner cavity. When cleaning the inner cavity of the first water tank 1, the sprayer 4 is opened to spray cleaning liquid to clean the inner cavity of the first water tank 1.

[0033] The first water tank 1 is used to store the electrolyte, which can be alkaline water, desalinated water, deionized water, or pure water. Alkaline water includes a 30% KOH solution and a 20% NaOH solution. The electrolyte stored in the first water tank 1 is used to supply the electrolytic hydrogen production equipment to produce hydrogen. After prolonged use, a layer of dirt easily forms on the inner wall and bottom of the first water tank 1. At this time, the sprayer 4 can be turned on, spraying the cleaning solution onto the inner wall and bottom of the first water tank 1 in a diffused spray form, thereby achieving the cleaning purpose. The cleaning solution can be desalinated water or a solution that can react with the dirt, such as an acidic solution. The cleaning solution can dissolve the dirt, causing it to detach from the inner wall and bottom of the first water tank 1, achieving the cleaning purpose. After the initial cleaning, the sprayer 4 can spray pure water to rinse away any remaining cleaning solution in the first water tank 1. The second water tank 2 is used to buffer wastewater, i.e., the wastewater generated from cleaning the first water tank 1. During the cleaning process of the first water tank 1, the first control valve 31 is opened to connect the first liquid inlet 21 and the first liquid outlet 11, so that the sewage in the first water tank 1 can be left into the second water tank 2.

[0034] Through the above embodiments, when dirt forms on the inner wall and bottom of the first water tank 1, the first water tank 1 can be cleaned by the sprayer 4. This cleaning method is convenient and does not require manual labor.

[0035] As attached Figure 1 and 3 As shown, in some embodiments, the bottom of the first water tank 1 is provided with a drainage section 12, which is funnel-shaped, and the first outlet 11 is located at the bottom of the drainage section 12. The drainage section 12 facilitates the drainage of water in the first water tank 1 to the first outlet 11, preventing the liquid at the bottom of the first water tank 1 from not being able to drain out, thereby preventing sewage residue in the first water tank 1 after cleaning, which would affect the subsequent use of the first water tank 1.

[0036] In some embodiments, the first water tank 1 is provided with an inlet 13 at its top. When the electrolyte is an alkaline solution, pure water at a first preset level can be introduced into the first water tank 1 first, and then alkaline material can be added through the inlet 13 to dissolve the alkaline material in the pure water, thus forming an alkaline electrolyte. The inlet 13 facilitates the addition of materials to the first water tank 1. The inlet 13 is provided with a sealing cap, which can be used to seal the inlet 13 when no materials need to be added.

[0037] In some embodiments, the top of the first water tank 1 is provided with a return port 14, through which pure water or electrolyte can be added to the first water tank 1 directly. Thus, the return port 14 facilitates the addition of liquid to the first water tank 1. For example, during the preparation of alkali solution, the liquid in the first water tank 1 is pumped out by an alkali pump and then pumped back into the first water tank 1 for circulation. Furthermore, when the electrolytic hydrogen production equipment is shut down, the liquid is pumped back into a fixed cavity for storage.

[0038] As attached Figure 4 As shown, in some embodiments, the water tank is provided with a first connecting pipe 32, one end of which is connected to a sprayer 4, and the other end is connected to a cleaning fluid supply source. The first connecting pipe 32 is provided with a booster pump 321, which is used to deliver the cleaning fluid. The booster pump 321 can increase the spray pressure of the sprayer 4, so that the cleaning fluid can be sprayed onto the inner wall and bottom of the first water tank 1 to flush away dirt, thereby increasing the cleaning effect.

[0039] As attached Figure 1 As shown, the sprayer 4 is provided with a spray liquid inlet 41 and a spray liquid chamber 42. External spray liquid is injected into the spray liquid chamber 42 from the spray liquid inlet 41, so that the sprayer 4 uses the spray liquid 4 in the spray liquid chamber 42 to spray and brush the inner wall and bottom of the first water tank 1.

[0040] Based on the design of the first connecting pipe 32 having a booster pump 321, the pressure of the booster pump 321 is 5 to 7 bar. Within this pressure range, the inner wall and bottom of the first water tank 1 can be cleaned, and the spray pressure will not cause the first water tank 1 to become unbalanced and shake.

[0041] In some embodiments, the first control valve 31 is a three-way valve, comprising a first connection port (not shown), a second connection port (not shown), and a third connection port (not shown). The water tank is equipped with a delivery pipe 5. The first connection port is connected to the first inlet 21, the second connection port is connected to the first outlet 11, and the third connection port is connected to the delivery pipe 5. Understandably, one end of the delivery pipe 5 is connected to the third connection port, and the other end is connected to the electrolysis equipment, allowing the electrolyte in the first water tank 1 to be delivered to the electrolysis equipment for electrolysis, thereby generating hydrogen gas. When the first water tank 1 needs to discharge wastewater, the first control valve 31 controls the first and second connection ports to connect, allowing the wastewater in the first water tank 1 to pass through the first and second connection ports and enter the second water tank 2. When the first water tank 1 needs to deliver electrolyte to the electrolysis equipment, the first control valve 31 controls the second and third connection ports to connect, allowing the electrolyte to flow through the second and third connection ports into the delivery pipe 5, thereby being delivered to the electrolysis equipment. When the first water tank 1 is in the electrolyte preparation state, the first control valve 31 is closed. Exemplarily, the end of the delivery pipe 5 opposite to the first water tank 1 is provided with an outlet 51, which is connected to the electrolysis equipment.

[0042] For example, a removable filter screen is provided at the outlet 51 of the delivery pipe 5 to filter the electrolyte passing through the outlet 51. When the filter screen becomes old, it can be replaced. Or, when there is a lot of debris on the filter screen, it can be removed for cleaning.

[0043] In some embodiments, the first water tank 1 is provided with a first liquid level sensor 15 for detecting the liquid level of the first water tank 1. A preset liquid amount can be added to the first water tank 1, and when the first liquid level sensor 15 detects that the liquid level in the first water tank 1 reaches the preset liquid amount, the addition of liquid to the first water tank 1 is stopped.

[0044] In some embodiments, the first water tank 1 is provided with a first liquid level sensor 15 and a second liquid outlet 16, the second liquid outlet 16 is provided with a second control valve 161, the first liquid level sensor 15 is used to detect the liquid level of the first water tank 1, and the first liquid level sensor 15 is connected to the first control valve 31 and the second control valve 161. The first liquid level sensor 15 is used to control the opening and closing of the first control valve 31 and the second control valve 161. For example, when the first liquid level sensor 15 detects that the liquid level of the first water tank 1 is greater than 40%, the electric valve of the second connecting port is controlled to close the first control valve 31, so that the second connecting port is completely closed, and the second control valve 161 is controlled to be opened, and the electrolyte flows out of the second liquid outlet 16 to be delivered to the electrolysis equipment. When it is needed to deliver electrolyte to the electrolysis equipment, when the first liquid level sensor 15 detects that the liquid level of the first water tank 1 is less than or equal to 40%, the first control valve 31 is controlled, and the second connecting port and the third connecting port are communicated, the electrolyte flows into the delivery pipe 5 through the second connecting port and the third connecting port, and then is delivered to the electrolysis equipment. It can be understood that the electrolyte is easy to deposit dirt at the bottom, and the electrolyte above the 40% liquid level is relatively impurity-free, so that the electrolysis equipment is supplied with liquid through the third connecting port when the liquid level is sufficient. The 40% liquid level value can be modified according to actual conditions, and the 40% liquid level value is only an example in this embodiment, and does not limit the setting of the liquid level value of the utility model.

[0045] In some embodiments, the second water tank 2 is provided with a second liquid level sensor 22 for detecting the liquid level of the second water tank 2. When the second liquid level sensor 22 detects that the liquid level of the second water tank 2 is greater than a second preset liquid level, an alarm can be prompted, or the sewage in the second water tank 2 can be automatically discharged. For example, the second preset liquid level can be one of 70%, 80%, and 90%.

[0046] In some embodiments, the second water tank 2 is equipped with a second liquid level sensor 22 and a drain outlet 23. The drain outlet 23 is equipped with a third control valve 231. The second liquid level sensor 22 is used to detect the liquid level in the second water tank 2, and the second liquid level sensor 22 is connected to the third control valve 231. The second liquid level sensor 22 controls the opening and closing of the third control valve 231. When the second liquid level sensor 22 detects that the liquid level in the second water tank 2 exceeds a second preset liquid level, the second liquid level sensor 22 will control the third control valve 231 to open, so as to discharge the sewage in the second water tank 2. It can be understood that the drain outlet 23 is located near the bottom of the second water tank 2 to discharge as much sewage as possible from the second water tank 2.

[0047] The first liquid level sensor 15 and the second liquid level sensor 22 described in the above embodiments can be one of a magnetic float level gauge, a photoelectric liquid level sensor, or a capacitive liquid level sensor. The first liquid level sensor 15 and the second liquid level sensor 22 can be the same type of liquid level sensor or different types of liquid level sensors.

[0048] As attached Figure 1 and Figure 3 As shown, in some embodiments, the bottom of the first water tank 1 and the top of the second water tank 2 are connected, and the bottom of the first water tank 1 and the top of the second water tank 2 are connected by a hinge structure or a pivot structure 33, allowing the first water tank 1 to rotate relative to the second water tank 2. The first water tank 1 can rotate relative to the second water tank 2 to open the bottom of the first water tank 1, thereby facilitating cleaning of the first outlet 11 and replacement or maintenance of the first control valve 31. The connecting structure includes two hinges and a pivot. The two hinges have pivot holes, and the pivot passes through the pivot holes of the two hinges, allowing the two hinges to rotate relative to each other. The two hinges are respectively fixed to the first water tank 1 and the second water tank 2, allowing the first water tank 1 and the second water tank 2 to rotate relative to each other. The pivot structure 33 includes a pivot (not shown in the figure) and pivot holes (not shown in the figure) provided on the first water tank 1 and / or the second water tank 2, through which the pivot passes to rotatably connect the first water tank 1 and the second water tank 2.

[0049] Based on the design that the first water tank 1 and the second water tank 2 can rotate relative to each other, the top of the first water tank 1 is provided with a hanging ear (not shown in the figure). When the first water tank 1 rotates relative to the second water tank 2 to open the gap between the first water tank 1 and the second water tank 2, the hanging ear can be hooked to fix the first water tank 1 and prevent the first water tank 1 from rotating. This makes it easier to maintain the components located at the bottom of the first water tank 1.

[0050] In some embodiments, the first water tank 1 is provided with a first connecting portion 17 at the edge of the bottom end, and the second water tank 2 is provided with a second connecting portion 24 at the edge of the top end. The first connecting portion 17 and the second connecting portion 24 are adapted and connected. When the first water tank 1 and the second water tank 2 are connected at the bottom end and the top end, the first connecting portion 17 and the second connecting portion 24 are connected, which can prevent the first water tank 1 and the second water tank 2 from shaking relative to each other. The first connecting portion 17 and the second connecting portion 24 can be a groove and a protrusion, respectively, or the first connecting portion 17 and the second connecting portion 24 can be protrusions that are offset from each other. When the first connecting portion 17 and the second connecting portion 24 are connected, the gap between the edge of the first water tank 1 and the edge of the second water tank 2 is small, which can make the entire water tank more aesthetically pleasing.

[0051] In some embodiments, a receiving cavity 34 is provided between the first water tank 1 and the second water tank 2. The receiving cavity 34 can be used to install components of the water tank, such as the delivery pipe 5 and the first control valve 31 in the above-described embodiments. The components in the receiving cavity 34 can be replaced and maintained by opening the space between the first water tank 1 and the second water tank 2.

[0052] Further, the receiving cavity 34 can be formed by the space between the funnel-shaped drainage portion 12 and the top end of the second water tank 2 in the above-described embodiments. In this way, the liquid can be drained by the drainage portion 12, and components can be installed in the receiving cavity 34.

[0053] In an embodiment, the axial cross-sectional outer profile of the first water tank 1 and the second water tank 2 is polygonal, i.e., the first water tank 1 and the second water tank 2 have multiple faces. The multiple faces are flat, which facilitates the arrangement of the liquid level outlet and the liquid level inlet, and facilitates the installation of the control valve and the liquid level sensor. The axial cross-section of the inner cavity of the first water tank 1 and the second water tank 2 is circular, and the wall surface of the inner cavity is an arc, which is not easy to hide dirt.

[0054] In an embodiment, the electrolytic hydrogen production equipment includes a water tank as in any one of the above-described embodiments. The water tank is used to store electrolyte to supply the electrolytic hydrogen production equipment. The structure and benefits of the water tank have been described in detail in the above-described embodiments. Since the electrolytic hydrogen production equipment includes the water tank, it includes the structure and benefits of the above-described embodiments, which will not be described again.

[0055] In some embodiments, the electrolytic hydrogen production equipment includes a controller connected to the first control valve, the second control valve, the third control valve, the first liquid level sensor, and the second liquid level sensor, to control the operation of the first control valve, the second control valve, the third control valve, the first liquid level sensor, and the second liquid level sensor.

[0056] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A water tank characterized by, The water tank comprises a first water tank and a second water tank, the first water tank is provided with a first liquid outlet at the bottom, the second water tank is provided with a first liquid inlet at the top, the first liquid inlet and the first liquid outlet are connected through a first control valve, the first control valve is used to control the communication or closing of the first liquid inlet and the first liquid outlet, the first water tank is provided with a sprayer at the top of the inner cavity, when cleaning the inner cavity of the first water tank, the sprayer is opened to spray cleaning liquid to clean the inner cavity of the first water tank.

2. The water tank according to claim 1, characterized in that The first water tank is provided with a drainage part at the bottom, the drainage part is funnel-shaped, and the first liquid outlet is arranged at the bottom end of the drainage part; and / or The first water tank is provided with a liquid inlet at the top; and / or The first water tank is provided with a liquid return port at the top.

3. The water tank according to claim 1, characterized in that The water tank is provided with a first connecting pipeline, one end of the first connecting pipeline is connected with the sprayer, the other end of the first connecting pipeline is connected with a cleaning liquid supply source, the first connecting pipeline is provided with a booster pump, and the booster pump is used to deliver the cleaning liquid.

4. The water tank according to claim 3, characterized in that The pressure of the booster pump is 5-7 bar.

5. The water tank according to claim 1, characterized in that The first control valve is a three-way valve, the first control valve comprises a first connecting port, a second connecting port and a third connecting port; The water tank is provided with a delivery pipe, the first connecting port is connected with the first liquid inlet, the second connecting port is connected with the first liquid outlet, and the third connecting port is connected with the delivery pipe.

6. The water tank according to claim 5, characterized in that The first water tank is provided with a first liquid level sensor, and the first liquid level sensor is used to detect the liquid level of the first water tank; or The first water tank is provided with a first liquid level sensor and a second liquid outlet, the second liquid outlet is provided with a second control valve, the first liquid level sensor is used to detect the liquid level of the first water tank, and the first liquid level sensor is connected with the first control valve and the second control valve.

7. The water tank according to claim 1, characterized in that The second water tank is provided with a second liquid level sensor, and the second liquid level sensor is used to detect the liquid level of the second water tank; or The second water tank is provided with a second liquid level sensor and a blowdown port, the blowdown port is provided with a third control valve, the second liquid level sensor is used to detect the liquid level of the second water tank, and the second liquid level sensor is connected with the third control valve.

8. The water tank of claim 1, wherein The bottom end of the first water tank and the top end of the second water tank are connected, and the bottom end of the first water tank and the top end of the second water tank are connected through a hinge structure or a rotating shaft structure, and the first water tank can rotate relative to the second water tank.

9. The water tank according to claim 8, characterized in that The edge of the bottom end of the first water tank is provided with a first connecting part, the edge of the top end of the second water tank is provided with a second connecting part, the first connecting part and the second connecting part are matched and connected; and / or A containing cavity is arranged between the first water tank and the second water tank.

10. An electrolytic hydrogen generator, characterized by comprising: The electrolytic hydrogen production equipment comprises the water tank as claimed in any one of claims 1-9, and the water tank is used to store electrolyte to supply the electrolytic hydrogen production equipment.

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