Cavitation corrosion prevention structure of alkaline water electrolytic bath

Abstract

The utility model relates to the technical field of electrolytic baths, and particularly discloses an alkaline water electrolytic bath anti-cavitation structure which comprises an electrolytic bath body and an upper sealing cover, a bubble segmentation assembly is arranged in the electrolytic bath body, and a turbulent flow heating assembly rotationally connected with the bubble segmentation assembly is arranged on the upper sealing cover; the bubble segmentation assembly comprises a frame slidably connected with the inner wall of the electrolytic cell body, a decomposition net is arranged on the frame, the turbulent flow heating assembly comprises a rotating roller rotationally connected with the upper sealing cover and the frame, a plurality of turbulent flow rollers are arranged at one end of the rotating roller in a circumferential array mode, and electric heating wires are wound around the rotating roller and the multiple turbulent flow rollers; according to the utility model, the electrolyte is heated through the turbulent flow heating assembly, the reaction efficiency of the electrolyte is improved, bubbles generated by decomposition of the electrolyte are drained, and the phenomenon that the bubbles are impacted and attached to the side wall of the electrolytic cell is reduced; and rising bubbles generated by electrolyte decomposition are broken in advance through the bubble segmentation assembly, so that the damage of the cavitation phenomenon to the electrolytic cell is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic cells, in particular to an anti-cavitation structure of an alkaline water electrolytic cell. Background Art

[0002] The alkaline water electrolysis method is to electrolyze water by using an alkaline aqueous solution containing alkaline metal hydroxide as an electrolyte, generate hydrogen from the cathode, generate oxygen from the anode, and generate a large number of bubbles during the gas discharge process. With respect to the above-mentioned related technologies, the inventors believe that the large amount of hydrogen and oxygen generated by electrolysis will rise to the electrolyte surface in the form of bubbles and then burst. At the same time, the bubbles are likely to adhere to the inner wall of the electrolytic cell during the rising process, and then burst under the action of pressure, causing cavitation on the inner wall of the electrolytic cell, thereby damaging the electrolytic cell. The liquid surface of the electrolyte is close to the gas outlet pipe, so the closer the position in the electrolytic cell body is to the gas outlet pipe, the more serious the cavitation phenomenon is.

[0003] A Chinese patent document CN217997347U discloses an anti-cavitation structure for an alkaline water electrolyzer, which includes an electrolytic cell body, a protective bushing and a decomposition net. The electrolytic cell body includes an electrolytic cell body and an air outlet pipe. The air outlet pipe is placed above the electrolytic cell body. A protective bushing is bonded to the inner wall of the electrolytic cell body. The protective bushing extends to the inner wall of the air outlet pipe. A support assembly is provided on the inner wall of the protective bushing near the air outlet pipe. The support assembly supports the decomposition net, and the decomposition net covers the opening of the protective bushing. The present application has the effect of reducing the damage caused by cavitation to the electrolytic cell body; however, the protective bushing added in the technical content greatly reduces the reaction efficiency of the electrolytic cell, and the setting of the bushing affects the conductivity between the upper plates of the electrolytic cell, resulting in a reduction in its reaction efficiency.

[0004] Therefore, we provide an anti-cavitation structure for an alkaline water electrolyzer, which heats the electrolyte through a turbulent heating component to improve its reaction efficiency, and drains the bubbles generated by the decomposition of the electrolyte to reduce the phenomenon of bubbles impacting and adhering to the side walls of the electrolyzer; the rising bubbles generated by the decomposition of the electrolyte are ruptured in advance through a bubble splitting component, further reducing the damage of cavitation to the electrolyzer. Utility Model Content

[0005] In order to solve the above-mentioned problems existing in the prior art, the utility model provides an anti-cavitation structure for an alkaline water electrolyzer, which can heat the electrolyte through a turbulent heating component to improve its reaction efficiency, and drain the bubbles generated by the decomposition of the electrolyte to reduce the phenomenon of the bubbles impacting and adhering to the side wall of the electrolyzer; the rising bubbles generated by the decomposition of the electrolyte are ruptured in advance through the bubble splitting component, further reducing the damage of cavitation to the electrolyzer.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] An alkaline water electrolyzer anti-cavitation structure comprises an electrolyzer body and an upper cover, wherein a bubble splitting component is arranged in the electrolyzer body, and a turbulent heating component rotatably connected to the bubble splitting component is arranged on the upper cover;

[0008] The bubble splitting assembly comprises a frame slidably connected to the inner wall of the electrolytic cell body, the frame is provided with a decomposition net, and the bubble splitting assembly splits the rising bubbles generated when the electrolyte is decomposed through the decomposition net;

[0009] The turbulence heating component includes a roller rotatably connected to the upper cover and the frame, a plurality of turbulence rollers are arranged in a circular array at one end of the roller, and electric heating wires are wound around the roller and the plurality of turbulence rollers. The turbulence heating component turbules the rising bubbles generated when the electrolyte decomposes through the turbulence roller, and heats the electrolyte through the electric heating wire.

[0010] When the alkaline water electrolyzer decomposes the electrolyte, the controller controls the heating wire to heat the electrolyte, and starts the low-speed DC motor. The low-speed DC motor drives the roller and the spoiler roller to operate, so that the electrolyte achieves a slow stirring and heating effect. The rising bubbles generated during the decomposition are drained by the vortex formed by the stirring of the spoiler roller, and the bubbles located near the inner wall of the electrolytic cell are drained to the vicinity of the vortex, thereby effectively reducing the situation where the bubbles adhere to the inner wall of the electrolytic cell. While the spoiler roller stirs and drains the bubbles, it also heats the electrolyte, thereby increasing the reaction rate of the electrolyte. The rising bubbles generated by the electrolysis of the electrolyte are divided after passing through the decomposition net on the frame, which causes the bubbles to rupture in advance, so that tiny bubbles composed of hydrogen and oxygen adhere to the decomposition net, so that cavitation acts on the decomposition net, thereby further reducing the damage of cavitation to the electrolytic cell.

[0011] Furthermore, the bubble segmentation assembly also includes a plurality of buffer pads arranged in a circumferential array on the periphery of the frame, and the frame is connected to the inner wall of the electrolytic cell body through the buffer pads.

[0012] Furthermore, the bubble segmentation assembly also includes a through hole arranged in the center of the frame, and the roller passes through the through hole. While the frame carries the decomposition net, it also limits the roller so that the roller will not be polarized due to the long roller body.

[0013] Furthermore, the turbulent heating assembly also includes a limit block mounted on the roller, the limit block is slidably connected to the roller, and an adjustment bolt is provided on the limit block. The limit block adjusts the position of the limit block on the roller through the adjustment bolt. By loosening the adjustment bolt, the position of the limit block on the roller can be adjusted, thereby improving the adaptability of the decomposition net on the frame to electrolytic cells of different depths.

[0014] Furthermore, the frame is rotatably connected to the limit block, the rotating roller is connected to a low-speed DC motor, the low-speed DC motor is located above the upper cover, and an air outlet is provided on the upper cover.

[0015] Furthermore, the heating wire on the rotating roller is located below the limiting block, and the spoiler roller is arranged at an angle relative to the rotating roller. The inclined arrangement of the spoiler roller helps it to perform turbulent stirring on the electrolyte.

[0016] The beneficial effects of the utility model are:

[0017] (1) The turbulent heating assembly is set up so that the rising bubbles generated by the decomposition of the electrolyte are drained by the vortex formed by the stirring of the turbulent roller, and the bubbles near the inner wall of the electrolytic cell are drained to the vicinity of the vortex, thereby effectively reducing the situation where the bubbles adhere to the inner wall of the electrolytic cell. While the turbulent roller stirs and drains the bubbles, it also heats the electrolyte through the heating wire arranged around its outside, thereby improving the reaction rate of the electrolyte.

[0018] (2) The bubble splitting assembly is set up so that the rising bubbles generated by the decomposition of the electrolyte are split after passing through the decomposition net on the frame, which causes the bubbles to burst in advance and causes tiny bubbles composed of hydrogen and oxygen to adhere to the decomposition net, so that cavitation acts on the decomposition net, thereby further reducing the damage of cavitation to the electrolytic cell.

[0019] (3) By setting an adjustable limit block, the position of the limit block on the roller can be adjusted by loosening the adjustment bolt, and the position of the limit block on the roller can be determined by tightening the adjustment bolt, thereby improving the adaptability of the decomposition net on the frame to electrolytic cells of different depths.

[0020] (4) The frame is set up so that the frame can not only carry the decomposition net, but also limit the position of the roller to prevent the roller from being greatly polarized due to the long length of the roller body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is the first cross-sectional view of the utility model;

[0024] Figure 3 It is a second cross-sectional view of the utility model;

[0025] Figure 4 It is a top sectional view of the utility model;

[0026] Figure 5 It is a schematic diagram of the coordination of the turbulent heating component and the bubble dividing component of the utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the turbulent heating component of the utility model;

[0028] Figure 7 It is a schematic diagram of the structure of the bubble segmentation component of the utility model.

[0029] Description of main component symbols:

[0030] In the figure: 1. electrolytic cell body; 2. upper cover; 201. air outlet; 3. low-speed DC motor; 4. rotating roller; 401. limit block; 402. adjusting bolt; 5. spoiler roller; 501. heating wire; 6. frame; 601. decomposition net; 602. buffer pad; 603. through hole. DETAILED DESCRIPTION

[0031] In order to further explain the technical means and effects adopted by the utility model to achieve the predetermined utility model purpose, the specific implementation methods, structures, features and effects of the utility model are clearly and completely described below in combination with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present application, it should be understood that the orientation or position relationship indicated by "inside" or "outside" etc. is based on the orientation or position described in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and therefore cannot be understood as a limitation on the present application.

[0033] See also Figures 1 to 7 , is an alkaline water electrolyzer anti-cavitation structure disclosed in the utility model, comprising an electrolyzer body 1 and an upper cover 2, wherein a bubble splitting component is arranged in the electrolyzer body 1, and a turbulent heating component rotatably connected to the bubble splitting component is arranged on the upper cover 2;

[0034] The bubble splitting assembly includes a frame 6 slidably connected to the inner wall of the electrolytic cell body 1, and a decomposition net 601 is provided on the frame 6. The bubble splitting assembly splits the rising bubbles generated when the electrolyte is decomposed through the decomposition net 601;

[0035] The turbulence heating component includes a roller 4 rotatably connected to the upper cover 2 and the frame 6, and a plurality of turbulence rollers 5 are arranged in a circumferential array at one end of the roller 4. The roller 4 and the plurality of turbulence rollers 5 are both provided with heating wires 501. The turbulence heating component turbules the rising bubbles generated when the electrolyte decomposes through the turbulence roller 5, and heats the electrolyte through the heating wires 501.

[0036] When the alkaline water electrolyzer decomposes the electrolyte, the controller controls the heating wire 501 to heat the electrolyte, and starts the low-speed DC motor 3. The operation of the low-speed DC motor 3 drives the roller 4 and the spoiler roller 5 to operate, so that the electrolyte achieves a slow stirring and heating effect. The rising bubbles generated during the decomposition are drained by the vortex formed by the stirring of the spoiler roller 5, and the bubbles located near the inner wall of the electrolytic cell are drained to the vicinity of the vortex, thereby effectively reducing the situation where the bubbles adhere to the inner wall of the electrolytic cell. While the spoiler roller 5 stirs and drains the bubbles, it also heats the electrolyte, thereby increasing the reaction rate of the electrolyte. The rising bubbles generated by the electrolysis of the electrolyte are divided after passing through the decomposition net 601 on the frame 6, which causes the bubbles to rupture in advance, so that the tiny bubbles composed of hydrogen and oxygen adhere to the decomposition net 601, so that the cavitation phenomenon acts on the decomposition net 601, thereby further reducing the damage of the cavitation phenomenon to the electrolytic cell.

[0037] See also Figures 2 to 7 The bubble separation component also includes a plurality of buffer pads 602 arranged in a circumferential array on the periphery of the frame 6, and the frame 6 is connected to the inner wall of the electrolytic cell body 1 through the buffer pads 602. The bubble separation component also includes a through hole 603 arranged in the center of the frame 6, and the roller 4 passes through the through hole 603.

[0038] In this embodiment, it should be noted that: the frame 6 not only carries the decomposition net 601, but also limits the position of the roller 4, so that the roller 4 will not be polarized due to the long roller body.

[0039] See also Figures 2 to 6 The turbulent heating assembly also includes a limit block 401 sleeved on the roller 4, the limit block 401 is slidably connected to the roller 4, an adjustment bolt 402 is provided on the limit block 401, and the limit block 401 adjusts the position of the limit block 401 on the roller 4 through the adjustment bolt 402.

[0040] In this embodiment, it should be noted that: by loosening the adjusting bolt 402, the position of the limit block 401 on the roller 4 can be adjusted, and the adjusting bolt 402 can be tightened to determine the position of the limit block 401 on the roller 4, thereby improving the adaptability of the decomposition net 601 on the frame 6 to electrolytic cells of different depths.

[0041] See also Figures 2 to 3The frame 6 is rotatably connected to the limit block 401, the roller 4 is connected to a low-speed DC motor 3, the low-speed DC motor 3 is located above the upper cover 2, the upper cover 2 is provided with an air outlet 201, the heating wire 501 on the roller 4 is located below the limit block 401, and the spoiler roller 5 is inclined relative to the roller 4. The inclined setting of the spoiler roller 5 helps it to stir the electrolyte.

[0042] The working principle and use process of the utility model are as follows: when the alkaline water electrolytic cell decomposes the electrolyte, the controller controls the electric heating wire 501 to heat the electrolyte, and starts the low-speed DC motor 3 to operate. The operation of the low-speed DC motor 3 drives the roller 4 and the spoiler roller 5 to operate, so that the electrolyte achieves a slow stirring and heating effect. The rising bubbles generated during the decomposition are drained by the vortex formed by the stirring of the spoiler roller 5, and the bubbles located near the inner wall of the electrolytic cell are drained to the vicinity of the vortex, thereby effectively reducing the situation where the bubbles adhere to the inner wall of the electrolytic cell. In addition, the spoiler roller 5 stirs and drains the bubbles of the electrolyte, and heats the electrolyte at the same time, thereby improving the reaction rate of the electrolyte.

[0043] The rising bubbles generated by the electrolysis of the electrolyte are divided after passing through the decomposition net 601 on the frame 6, which causes the bubbles to burst in advance, so that the tiny bubbles composed of hydrogen and oxygen adhere to the decomposition net 601, causing cavitation to act on the decomposition net 601, thereby further reducing the damage of cavitation to the electrolytic cell.

[0044] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An alkaline water electrolyzer anti-cavitation structure, comprising an electrolyzer body (1) and an upper cover (2), characterized in that: The electrolytic cell body (1) is provided with a bubble splitting component, and the upper cover (2) is provided with a turbulent heating component rotatably connected to the bubble splitting component; The bubble splitting component comprises a frame (6) slidably connected to the inner wall of the electrolytic cell body (1), a decomposition net (601) being arranged on the frame (6), and the bubble splitting component splits rising bubbles generated when the electrolyte is decomposed through the decomposition net (601); The turbulence heating component comprises a rotating roller (4) rotatably connected to the upper cover (2) and the frame (6); a plurality of turbulence rollers (5) are arranged in a circumferential array at one end of the rotating roller (4); electric heating wires (501) are wound around the rotating roller (4) and the plurality of turbulence rollers (5); the turbulence heating component turbules rising bubbles generated when the electrolyte decomposes through the turbulence roller (5), and heats the electrolyte through the electric heating wire (501).

2. The anti-cavitation structure of an alkaline water electrolyzer according to claim 1, characterized in that: The bubble separation component also includes a plurality of buffer pads (602) arranged in a circumferential array on the periphery of the frame (6), and the frame (6) is connected to the inner wall of the electrolytic cell body (1) via the buffer pads (602).

3. The anti-cavitation structure of an alkaline water electrolyzer according to claim 1, characterized in that: The bubble separation component further comprises a through hole (603) arranged at the center of the frame (6), and the rotating roller (4) passes through the through hole (603).

4. The anti-cavitation structure of an alkaline water electrolyzer according to claim 1, characterized in that: The turbulent heating assembly also includes a limit block (401) sleeved on the rotating roller (4), the limit block (401) being slidably connected to the rotating roller (4), and an adjustment bolt (402) being provided on the limit block (401), and the limit block (401) is used to adjust the position of the limit block (401) on the rotating roller (4) through the adjustment bolt (402).

5. The anti-cavitation structure of an alkaline water electrolyzer according to claim 4, characterized in that: The frame (6) is rotatably connected to the limit block (401); the rotating roller (4) is connected to a low-speed DC motor (3); the low-speed DC motor (3) is located above the upper cover (2); and an air outlet (201) is provided on the upper cover (2).

6. The anti-cavitation structure of an alkaline water electrolyzer according to claim 4, characterized in that: The heating wire (501) on the rotating roller (4) is located below the limiting block (401), and the spoiler roller (5) is arranged at an angle relative to the rotating roller (4).

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