Water replenishing device of water electrolysis hydrogen production equipment

Abstract

The utility model discloses a water replenishing device for water electrolysis hydrogen production equipment, which relates to the technical field of water replenishing of electrolytic baths and particularly comprises a pressure tank, and a plurality of joints are arranged on the side surface of the pressure tank; the number of the flow regulating valves corresponds to that of the connectors, liquid flow sensors are arranged on inlets of the flow regulating valves, and water pressure sensors are arranged on outlets of the flow regulating valves; wherein the liquid flow sensors are respectively connected with the joints through pipelines, and the water pressure sensors are respectively communicated with the electrolytic bath through pipelines. When the device is used, electrolyte is stored in the pressure tank through the water supply pump, and the pressure tank pumps water outwards at a certain pressure when supplying liquid outwards, so that the electrolytic cells connected with the pressure tank can supply water under a certain pressure, and the problem of unbalanced pressure caused by the fact that the electrolytic cells are connected to one pump body at the same time is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic cell water replenishment, in particular to a water replenishment device for water electrolysis hydrogen production equipment. Background Art

[0002] The electrolyzer is the main equipment for industrial hydrogen production. Direct current is passed into it during operation. That is, when direct current passes through the electrolyzer, an oxidation reaction occurs at the interface between the anode and the solution, and a reduction reaction occurs at the interface between the cathode and the solution to produce the desired product.

[0003] When hydrogen is produced, the electrolyzer continuously consumes water (electrolyte) during operation, so water needs to be continuously added to the electrolyzer. Most of the water replenishment devices of existing hydrogen production equipment only rely on control valves and water pumps to control the water volume, and cannot achieve multi-point, uniform, and controllable water replenishment. For example, if there are multiple electrolyzers, the pipelines are connected to a pump body at the same time. Due to the length of the pipeline, the resistance of the pipeline, etc., the water pressure input into each electrolyzer will be different, which cannot meet the problem of simultaneous water supply to multiple electrolyzers. To this end, we propose a water replenishment device for water electrolysis hydrogen production equipment. Utility Model Content

[0004] In view of the disadvantage that there is pressure imbalance when supplying water to multiple electrolytic cells at the same time, the utility model provides a water replenishing device for water electrolysis hydrogen production equipment, which has the advantages of allowing multiple electrolytic cells to be connected to a pressure tank at the same time and supplying water at a set pressure through the pressure tank, thereby solving the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] Design a water replenishing device for water electrolysis hydrogen production equipment, including:

[0007] A pressure tank having a plurality of joints on the side of the pressure tank;

[0008] Flow regulating valves, the number of flow regulating valves corresponds to the number of joints, a liquid flow sensor is provided on the inlet of the flow regulating valve, and a water pressure sensor is provided on the outlet;

[0009] Wherein, the liquid flow sensors are connected to the joints through pipelines, and the water pressure sensors are connected to the electrolytic cells through pipelines.

[0010] Preferably, the pressure value of the pressure tank is at least 0.4 MPa.

[0011] Preferably, the joint is arranged at the bottom of the side of the pressure tank.

[0012] Preferably, the side of the pressure tank is connected to the water supply pump through a water delivery pipe, and the inlet of the water supply pump is connected to a water inlet pipe.

[0013] Preferably, an electric control valve is provided on the water delivery pipe, and a water pressure detector is provided in the pressure tank;

[0014] It further includes a controller, and the controller is respectively connected to the flow regulating valve, the water supply pump, the water pressure detector, the liquid flow sensor, the water pressure sensor, and the electric control valve through wires.

[0015] Preferably, both the pressure tank and the water supply pump are arranged on the base;

[0016] An installation frame is further provided on the base, and installation plates are distributed in multiple layers in the installation frame. The flow regulating valve, the liquid flow sensor, and the water pressure sensor are respectively installed on the installation plates.

[0017] Preferably, an alarm is further provided on the installation frame, and the alarm is connected to the controller through a wire.

[0018] Compared with the prior art, when the present utility model is in use, the electrolyte is stored in the pressure tank by the water supply pump. When the pressure tank supplies liquid outward, it will pump water outward with a certain pressure. Therefore, the electrolytic cells connected to the pressure tank can all supply water under a certain pressure, avoiding the problem of pressure imbalance caused by being connected to the same pump body simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Structural schematic of the present utility model Figure 1 .

[0020] Figure 2 Structural schematic of the present utility model Figure 2 .

[0021] Figure 3 Structural schematic diagram of the connection between the present utility model and the electrolytic cell.

[0022] In the figure: base 1, water inlet pipe 2, water supply pump 3, water delivery pipe 4, pressure tank 5, alarm 6, installation frame 7, flow regulating valve 8, water pressure sensor 9, installation plate 10, liquid flow sensor 11, control cabinet 12. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1 to 3, the present utility model provides a technical solution: a water replenishing device for a water electrolysis hydrogen production equipment, including a base 1, on which a pressure tank 5 and a water supply pump 3 are provided. The base 1 is also provided with a mounting rack 7, and the mounting rack 7 is a "U"-shaped frame body with an opening facing downwards;

[0025] As Figure 1 shown, a multi-layer mounting plate 10 is installed inside the mounting rack 7, and a plurality of flow regulating valves 8 are respectively installed on each layer of the mounting plate 10. A liquid flow sensor 11 is provided at the inlet of the flow regulating valve 8, and a water pressure sensor 9 is provided at its outlet. The water pressure sensor 9 and the liquid flow sensor 11 are also fixed on the mounting plate 10.

[0026] A plurality of joints are provided on the side of the pressure tank 5, and the number of joints corresponds to the number of flow regulating valves 8. In the actual operation process, the liquid flow sensors 11 are respectively connected to the joints through pipelines, and the water pressure sensors 9 are respectively connected to the electrolytic cells through pipelines (as Figure 3 shown). In this way, the water in the pressure tank 5 can enter the liquid flow sensor 11 through the pipeline first, and then the water passes through the flow regulating valve 8 and the water pressure sensor 9 in sequence. The water pressure sensors 9 are respectively connected to the electrolytic cells through pipelines, allowing the water to flow into the electrolytic cells.

[0027] It should be noted that when the present utility model is actually used, it may be connected to more than one electrolytic cell (as Figure 3 shown). In order to make the water flowing into the electrolytic cell have a certain pressure, the pressure value of the selected pressure tank 5 is at least 0.4 MPa, and the specific pressure value of the pressure tank 5 should match the input pressure of the electrolytic cell.

[0028] As Figure 1 Therefore, the side of the pressure tank 5 is connected to the water supply pump 3 through a water delivery pipe 4. The inlet of the water supply pump 3 is connected with a water inlet pipe 2. The water delivery pipe 4 is arranged at the top position of the pressure tank 5, and an electric control valve is provided on the water delivery pipe 4. The water supply pump is a high-pressure pump, and the water supply pump 3 is connected to the external water source through a filter. If the electrolytic cell is an alkaline electrolytic cell, the water supply pump 3 is connected to an alkaline solution storage tank through a pipeline, so that the water supply pump can pump the external electrolyte into the pressure tank 5 for storage at a certain pressure;

[0029] And a water pressure detector is provided inside the pressure tank 5. The electric control valve and the water pressure detector are respectively connected to the controller through wires, and the controller is also connected to the water supply pump 3 through wires. In this way, the pressure inside the pressure tank can be monitored in real time through the water pressure detector. When the pressure is lower than the preset value, the water supply pump 3 automatically starts to supply water into the pressure tank. When the pressure value reaches the preset value, the pressure tank stops supplying water.

[0030] The controller is also connected to the flow regulating valve 8, the liquid flow sensor 11, and the water pressure sensor 9 through wires respectively. Since the pressure tank 5 outputs the electrolyte with a certain water pressure, the water pressure in each flow regulating valve is equal. The controller first sets the flow value of each liquid flow sensor 11, and then the flow regulating valve 8 is automatically adjusted under the control of the controller, and finally the liquid can be supplied to the electrolytic cell at the set flow rate.

[0031] It should be emphasized that the water pressure sensor 9 is arranged on the side of the flow regulating valve 8 close to the electrolytic cell, and it is used to monitor the pressure of the pipeline connected to the electrolytic cell. The controller is connected to the alarm 6 through a wire, and the alarm 6 is arranged on the mounting bracket 7. The alarm 6 is preferably an audible and visual alarm. When the water pressure sensor 9 and the liquid flow sensor 11 sense abnormal data, the controller will give an alarm prompt through the alarm.

[0032] Furthermore, the joint is arranged at the bottom side position of the pressure tank 5, which can avoid the contact between the joint and the air at the top of the pressure tank 5 and prevent the air from mixing into the joint and being introduced into the electrolytic cell.

[0033] Based on the above embodiments, it can be further optimized. The cabinet door of the control cabinet 12 is provided with a display and operation buttons, and the display and operation buttons are respectively connected to the controller through wires. The display is used to display the data monitored by various sensors, and the operation buttons include the buttons for controlling the flow regulating valve 8, the start button, etc.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0035] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A water replenishing device for water electrolysis hydrogen production equipment, characterized in that: include, A pressure tank (5), wherein a plurality of joints are provided on the side of the pressure tank (5); flow regulating valves (8), the number of flow regulating valves (8) corresponding to the number of joints, a liquid flow sensor (11) being provided on the inlet of the flow regulating valve (8), and a water pressure sensor (9) being provided on the outlet; The liquid flow sensors (11) are connected to the joints through pipelines, and the water pressure sensors (9) are connected to the electrolytic cells through pipelines.

2. A water replenishing device for water electrolysis hydrogen production equipment according to claim 1, characterized in that: The pressure value of the pressure tank (5) is at least 0.4 MPa.

3. A water replenishing device for water electrolysis hydrogen production equipment according to claim 1, characterized in that: The joint is arranged at the bottom of the side of the pressure tank (5).

4. A water replenishing device for water electrolysis hydrogen production equipment according to claim 1, characterized in that: The side of the pressure tank (5) is connected to the water supply pump (3) through a water delivery pipe (4), and the inlet of the water supply pump (3) is connected to a water inlet pipe (2).

5. A water replenishing device for water electrolysis hydrogen production equipment according to claim 4, characterized in that: An electric control valve is provided on the water delivery pipe (4), and a water pressure detector is provided in the pressure tank (5); It also includes a controller, which is connected to the flow regulating valve (8), the water supply pump (3), the water pressure detector, the liquid flow sensor (11), the water pressure sensor (9), and the electric control valve through wires.

6. A water replenishing device for water electrolysis hydrogen production equipment according to claim 5, characterized in that: The pressure tank (5) and the water supply pump (3) are both arranged on the base (1); A mounting frame (7) is also provided on the base (1), and a multi-layered mounting plate (10) is provided inside the mounting frame (7). The flow regulating valve (8), the liquid flow sensor (11), and the water pressure sensor (9) are respectively mounted on the mounting plate (10).

7. A water replenishing device for water electrolysis hydrogen production equipment according to claim 6, characterized in that: An alarm is also provided on the mounting frame (7), and the alarm is connected to the controller via a wire.

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