An electrolyte level adjustment structure built into an electrolytic cell

Abstract

The utility model relates to the technical field of electrolytic cells, and specifically to a built-in electrolyte level regulating structure of an electrolytic cell. It comprises an electrolytic cell, a proton exchange membrane and a liquid level detection device. The liquid level detection device comprises at least two cylindrical partitions, a float and a laser rangefinder. During the experiment, the laser rangefinder can record the real-time height of the liquid level and feed it back to the experimenter or the pure water supply equipment. After receiving the feedback that the liquid level is too high or too low, the experimenter can adjust the input speed and output speed of the pure water in the electrolytic cell 1. Or the pure water supply equipment can adjust the input speed of the pure water in the electrolytic cell according to the preset liquid level.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic cells, in particular to a built-in electrolyte level regulating structure of an electrolytic cell. Background Art

[0002] The electrolytic cell consists of a cell body, an anode and a cathode. Most of them use a diaphragm to separate the anode chamber and the cathode chamber. According to the different electrolytes, they are divided into three categories: aqueous solution electrolytic cell, molten salt electrolytic cell and non-aqueous solution electrolytic cell. When direct current passes through the electrolytic cell, 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] In the prior art, there is a device for replenishing pure water for the electrolytic cell, such as a PEM electrolytic cell authorized by the Chinese patent authorization announcement number: CN219032398U on May 16, 2023, including: a water pipe and an electric drain valve, a shunt pipe is installed in the middle position of the water pipe, a tank body is installed at the lower end of the water pipe, a telescopic rod is installed at the lower end of the water pipe, a slider is installed at the lower end of the telescopic rod, the shunt pipe includes a pipe body, a water level control valve and a water injection pipe, a water level control valve is installed at the lower end of the pipe body, and a water injection pipe is installed at the lower end of the water level control valve. The utility model has the following beneficial effects: by using the water pipe and the shunt pipe, multiple groups of electrolytic cells inside the tank body can be replenished with water, and by using the electric-controlled drain valve, the inside of the electrolytic cell can be quickly drained, and by using the slide, the slider and the telescopic rod, it is convenient for the staff to take out the water pipe and the shunt pipe, and maintain or replace them, which is convenient and quick.

[0004] In actual use, the reaction zone of the electrolytic cell needs to be sealed to ensure that the product gas can be collected smoothly, and the solution of the prior art cannot intuitively obtain and record the relative height of the liquid level during use. The pure water level in the electrolytic cell can only be replenished to a specified height through a water level control valve. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to:

[0006] 1. Design an electrolyte level adjustment mechanism built into the electrolytic cell to realize the function of recording and adjusting the electrolyte level during operation.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An electrolytic cell built-in electrolyte level regulating structure, characterized in that it comprises an electrolytic cell and a proton exchange membrane, wherein the proton exchange membrane divides the electrolytic cell into an anode reaction zone and a cathode reaction zone, and the electrolytic cell is provided with an anode reaction zone liquid inlet, an anode reaction zone liquid outlet, a cathode reaction zone liquid inlet and a cathode reaction zone liquid outlet;

[0009] The anode reaction zone liquid inlet is arranged in the anode reaction zone, the anode reaction zone liquid outlet is arranged in the anode reaction zone, and the anode reaction zone liquid inlet is arranged on the opposite side of the anode reaction zone liquid outlet;

[0010] The cathode reaction zone liquid inlet is arranged in the cathode reaction zone, the cathode reaction zone liquid outlet is arranged in the cathode reaction zone, and the cathode reaction zone liquid inlet is arranged on the opposite side of the cathode reaction zone liquid outlet;

[0011] A transparent observation window for observing the liquid level is also provided at the diagonal position of the electrolytic cell, and a liquid level detection device for feeding back the liquid level in the electrolytic cell is also provided at the diagonal position of the electrolytic cell;

[0012] The liquid level detection device includes at least two cylindrical partitions, a float and a laser rangefinder. The partition is arranged in the anode reaction area and the cathode reaction area. The float is arranged in the partition. The float moves up and down in the vertical direction inside the partition. The position of the partition corresponds to the position of the observation window. The partition is provided with a plurality of through holes for liquid to pass through. The size of the through holes is smaller than the diameter of the float. The laser rangefinder is arranged at the bottom of the partition. The laser generating and reflected light receiving devices of the laser rangefinder are both facing the direction of the float.

[0013] This technical solution uses a float to display the liquid level of the electrolyte in the electrolytic cell in real time. After excluding the purely mechanical liquid level adjustment solution with low reliability and the resistive liquid level adjustment solution that may be disturbed in the electrolyte, a laser rangefinder that is not easily disturbed is used to measure the liquid level of the working electrolyte, thereby realizing the function of recording and adjusting the liquid level of the working electrolyte.

[0014] Optionally, the laser rangefinder transmits liquid level data to the pure water control device.

[0015] The pure water control device is used to control the pure water input and input into the electrolytic cell, and can adopt various control methods well known in the industry, such as electric control valves combined with control systems.

[0016] Optionally, the pure water control device includes a control device, a pure water storage tank, an input water pump, an output water pump and a waste liquid tank, the control device receives liquid level height data from the laser rangefinder through a wired or wireless connection, the control device is electrically connected to the input water pump, the control device is electrically connected to the output water pump, the pure water storage tank is connected to the liquid inlet of the anode reaction zone through the input water pump, the pure water storage tank is connected to the liquid inlet of the cathode reaction zone through the input water pump, the waste liquid tank is connected to the liquid outlet of the anode reaction zone through the output water pump, and the waste liquid tank is connected to the liquid outlet of the cathode reaction zone through the output water pump.

[0017] There are two sets of input water pumps and output water pumps respectively, which are used to control the entry and input of pure water into the cathode reaction zone and the anode reaction zone. Through the additional control device, the liquid level information fed back by the laser rangefinder can be recorded, archived and compared with the pre-input liquid level, and an electrical signal can be sent to the input and output water pumps to adjust the liquid level of the cathode reaction zone and the anode reaction zone to the specified height.

[0018] Optionally, the through hole is a long strip-shaped through hole, and a plurality of the through holes are staggeredly arranged on the partition.

[0019] Optionally, at least one through hole penetrates the partition at each height of the partition in the vertical direction.

[0020] This design can ensure that when the liquid level in the electrolytic cell is at any height, the float can enter the partition through the hole and float on the liquid surface.

[0021] Optionally, at each height of the partition in the vertical direction, there are at least two symmetrical through holes penetrating the partition.

[0022] This design can ensure that when the liquid in the electrolytic cell enters the float from the symmetrical through holes, it can generate symmetrical forces on the float, thereby reducing the collision between the float and the partition.

[0023] The beneficial technical effects of the utility model are: BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the three-dimensional structure of the cover plate after the electrode plate is installed in the utility model;

[0025] Figure 2 It is a structural schematic diagram of the electrolytic cell of the utility model;

[0026] Figure 3 This is a schematic diagram of the flow direction of pure water during the working process of the utility model;

[0027] Figure 4It is a partial cross-sectional structural schematic diagram of the liquid level detection device of the utility model;

[0028] Figure 5 It is a schematic diagram of the connection relationship between the pure water control device and the electrolytic cell of the utility model.

[0029] Figure markings: 1-electrolyzer, 2-proton exchange membrane, 3-anode reaction zone liquid inlet, 4-anode reaction zone liquid outlet, 5-cathode reaction zone liquid inlet, 6-cathode reaction zone liquid outlet, 7-transparent observation window, 8-partition, 9-laser rangefinder, 10-cover plate, 11-anode reaction plate, 12-cathode reaction plate, 13-anode gas outlet, 14-cathode gas outlet, 15-middle downstream zone, 16-side countercurrent zones, 17-anode support block, 18-cathode support block, 19-float, 20-through hole, 21-control device, 22-pure water storage tank, 23-input water pump, 24-output water pump, 25-waste liquid tank. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0031] Reference Figure 2 As shown, a PEM electrolyzer 1 comprises an electrolyzer 1 and a proton exchange membrane 2. The proton exchange membrane 2 divides the electrolyzer 1 into an anode reaction zone and a cathode reaction zone. The electrolyzer 1 is vertically arranged with three anode reaction zone liquid inlets 3, three anode reaction zone liquid outlets 4, three cathode reaction zone liquid inlets 5 and three cathode reaction zone liquid outlets 6. The design of multiple liquid inlets and outlets is mainly used for experimental testing of the influence of the inlet and outlet positions of pure water on the electrolysis efficiency and electrode loss.

[0032] The anode reaction zone liquid inlet 3 is arranged in the anode reaction zone, and the anode reaction zone liquid outlet 4 is arranged in the anode reaction zone. The anode reaction zone liquid inlet 3 and the anode reaction zone liquid outlet 4 are arranged on opposite sides.

[0033] The cathode reaction zone liquid inlet 5 is arranged in the cathode reaction zone, and the cathode reaction zone liquid outlet 6 is arranged in the cathode reaction zone. The cathode reaction zone liquid inlet 5 and the cathode reaction zone liquid outlet 6 are arranged on opposite sides.

[0034] A transparent observation window 7 for observing the liquid level is also provided at the diagonal portion of the electrolytic cell 1 , and a liquid level detection device for automatically feeding back the liquid level in the electrolytic cell 1 is also provided at the diagonal portion of the electrolytic cell 1 .

[0035] The liquid level detection device includes a cylindrical partition 8, a float and a laser rangefinder 9. There are two partitions 8, which are respectively arranged in the anode reaction area and the cathode reaction area. Both partitions 8 are located at the observation window, and the partitions 8 are provided with a plurality of through holes for liquid to pass through, and the size of the through holes is smaller than the diameter of the float. The laser rangefinder 9 is arranged at the bottom of the partition 8, and its laser generating and reflected light receiving devices are both facing the direction of the float.

[0036] During the experiment, the laser rangefinder 9 can record the real-time height of the liquid level and feed it back to the experimenter or the pure water supply device. After receiving the feedback that the liquid level is too high or too low, the experimenter can adjust the input speed and output speed of the pure water in the electrolytic cell 1. Or the pure water supply device can adjust the input speed of the pure water in the electrolytic cell 1 according to the preset liquid level.

[0037] Reference Figure 4 As shown, the length dimension of the through hole 20 is greater than the diameter of the float 19, and the width dimension is less than the diameter of the float 19 to ensure that the float 19 will not slip out of the through hole 20. The through holes 20 are symmetrically arranged in pairs on the partition plate, and are staggered to ensure that when the liquid level in the electrolytic cell 1 is at any height, it can enter the partition plate 8 through the symmetrical through holes 20 to make the float 19 float on the liquid surface.

[0038] Reference Figure 5 As shown, the pure water control device includes a control device, a pure water storage tank, an input water pump, an output water pump and a waste liquid tank. The control device receives liquid level height data from a laser rangefinder through a wired or wireless connection. The control device is electrically connected to the input water pump, and the control device is electrically connected to the output water pump. The pure water storage tank is connected to the liquid inlet of the anode reaction zone through the input water pump, the pure water storage tank is connected to the liquid inlet of the cathode reaction zone through the input water pump, the waste liquid tank is connected to the liquid outlet of the anode reaction zone through the output water pump, and the waste liquid tank is connected to the liquid outlet of the cathode reaction zone through the output water pump.

[0039] Reference Figure 1 As shown, there are a cover plate 10, an anode electrode plate and a cathode electrode plate. The cover plate 10 corresponds to the opening shape of the electrolytic cell 1, and a sealing ring is arranged around the periphery of the lower surface of the cover plate 10 as a sealing structure. The cover plate 10 is provided with an anode electrode plate and a cathode electrode plate.

[0040] The anode electrode plate corresponds to the anode reaction zone, and the cathode electrode plate corresponds to the cathode reaction zone.

[0041] The anode electrode plate includes two anode reaction plates 11, which are arranged in parallel and have a gap between them for pure water to flow from the anode reaction area liquid inlet 3 to the anode reaction area liquid outlet 4. The anode support block 17 is clamped between the two anode reaction plates 11.

[0042] The cathode electrode plate includes two cathode reaction plates 12, which are arranged in parallel, and a gap is left between the two cathode reaction plates 12 for pure water to flow from the cathode reaction zone liquid inlet 5 to the cathode reaction zone liquid outlet 6. The cathode support block 18 is clamped between the two cathode reaction plates 12.

[0043] The cover plate 10 is provided with an anode gas outlet 13 corresponding to the position of the anode reaction zone and a cathode gas outlet 14 corresponding to the position of the cathode reaction zone.

[0044] Reference Figure 3 As shown, the anode electrode plate and the cathode electrode plate have the same arrangement structure, so that the corresponding anode reaction area and cathode reaction area are divided into a central downstream area 15 and two side upstream areas 16, forming partially circulating pure water during operation.

[0045] By at least two reaction plates, the reaction zone is divided into a central downstream zone 15 and countercurrent zones 16 on both sides to form a partial circulation flow. Part of the pure water can repeatedly react with the reaction plates, ensuring the utilization rate of the pure water while also allowing the pure water circulation in the electrolytic cell 1 to flow at a faster speed; since the flow rate of pure water in this design is relatively fast, in order to prevent the electrode plates from being impacted by the water flow or shaking due to inconsistent pressure on both sides, a support block structure is designed between the two electrode plates to ensure that the relative position between the two electrode plates is fixed.

[0046] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An electrolyte level adjustment structure built into an electrolytic cell, characterized in that: The electrolytic cell comprises an electrolytic cell and a proton exchange membrane, wherein the proton exchange membrane divides the electrolytic cell into an anode reaction zone and a cathode reaction zone, and the electrolytic cell is provided with an anode reaction zone liquid inlet, an anode reaction zone liquid outlet, a cathode reaction zone liquid inlet and a cathode reaction zone liquid outlet; The anode reaction zone liquid inlet is arranged in the anode reaction zone, the anode reaction zone liquid outlet is arranged in the anode reaction zone, and the anode reaction zone liquid inlet is arranged on the opposite side of the anode reaction zone liquid outlet; The cathode reaction zone liquid inlet is arranged in the cathode reaction zone, the cathode reaction zone liquid outlet is arranged in the cathode reaction zone, and the cathode reaction zone liquid inlet is arranged on the opposite side of the cathode reaction zone liquid outlet; A transparent observation window for observing the liquid level is also provided at the diagonal position of the electrolytic cell, and a liquid level detection device for feeding back the liquid level in the electrolytic cell is also provided at the diagonal position of the electrolytic cell; The liquid level detection device includes at least two cylindrical partitions, a float and a laser rangefinder. The partition is arranged in the anode reaction area and the cathode reaction area. The float is arranged in the partition. The float moves up and down in the vertical direction inside the partition. The position of the partition corresponds to the position of the observation window. The partition is provided with a plurality of through holes for liquid to pass through. The size of the through holes is smaller than the diameter of the float. The laser rangefinder is arranged at the bottom of the partition. The laser generating and reflected light receiving devices of the laser rangefinder are both facing the direction of the float.

2. The electrolyte level regulating structure built into an electrolytic cell according to claim 1, characterized in that: The laser rangefinder transmits liquid level data to the pure water control device.

3. The electrolyte level regulating structure built into an electrolytic cell according to claim 2, characterized in that: The pure water control device includes a control device, a pure water storage tank, an input water pump, an output water pump and a waste liquid tank. The control device receives liquid level height data from the laser rangefinder through a wired or wireless connection. The control device is electrically connected to the input water pump, and the control device is electrically connected to the output water pump. The pure water storage tank is connected to the liquid inlet of the anode reaction zone through the input water pump, and the pure water storage tank is connected to the liquid inlet of the cathode reaction zone through the input water pump. The waste liquid tank is connected to the liquid outlet of the anode reaction zone through the output water pump, and the waste liquid tank is connected to the liquid outlet of the cathode reaction zone through the output water pump.

4. The electrolyte level regulating structure built into an electrolytic cell according to any one of claims 1 to 3, characterized in that: The through holes are long strip-shaped through holes, and a plurality of the through holes are staggeredly arranged on the partition.

5. The electrolyte level regulating structure built into the electrolytic cell according to claim 4, characterized in that: At least one through hole penetrates the partition at each height in the vertical direction.

6. The electrolyte level regulating structure built into the electrolytic cell according to claim 5, characterized in that: At each height of the partition in the vertical direction, there are at least two symmetrical through holes penetrating the partition.

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