Electrolyzer for electrolytic hydrogen production and assembly stand thereof

Abstract

The present invention discloses an electrolytic cell for electrolytic hydrogen production and an assembly stand thereof, which relates to the technical field of electrolytic hydrogen production, and comprises a first end plate and a second end plate, wherein a plurality of electrolytic chambers and a plurality of limiting columns are installed between the first end plate and the second end plate, wherein the electrolytic chamber is composed of an anode plate, a first supporting foam, a first partition, an isolation membrane, a second partition, a second supporting foam and a cathode plate arranged in sequence, wherein the first partition comprises a first through hole, wherein a placement groove and a limiting groove are arranged at one end of the first through hole facing the membrane, wherein the limiting groove is arranged around the placement groove, wherein the membrane is located in the placement groove, wherein a limiting clamp ring is arranged in the limiting groove, wherein one end of the limiting clamp ring covers the top of the placement groove; wherein the end of the through hole away from the membrane covers the first supporting foam. Thus, the limiting clamp ring cooperates with the first partition plate to position the membrane and the second supporting foam, thereby preventing wrinkles from occurring thereafter, which may lead to abnormal hydrogen production in the electrolytic cell.

Description

Technical Field

[0001] The present invention relates to the technical field of electrolytic hydrogen production, and in particular to an electrolytic cell for electrolytic hydrogen production and an assembly stand thereof. Background Art

[0002] A hydrogen production electrolyzer is typically composed of several small electrolysis chambers connected in series, each consisting of a tank body, anode plates, a diaphragm, and cathode plates. The tank body holds the electrolyte, while the anode and cathode plates react to electrolyze water to produce hydrogen and oxygen. The diaphragm separates the anode and cathode chambers to prevent gas mixing.

[0003] When assembling an existing electrolytic cell, the electrode plate at one end needs to be placed flat, and then the three-point pins are placed on the electrode plate. Subsequently, the electrode plate, separator, diaphragm, etc. are placed on the electrode plate in sequence through the pins. During this process, the pins will pass through the pin holes reserved on the electrode plate, separator, and diaphragm to complete the positioning of the electrode plate, separator, diaphragm and other structures.

[0004] However, the installed capacity of existing hydrogen production electrolyzers is getting larger and larger, and their volume is also increasing accordingly. This has caused great difficulties in assembling the electrolyzers. It is easy for the electrolyzers to have problems such as inaccurate positioning after assembly, resulting in leakage of liquid and gas during operation.

[0005] Especially when laying the diaphragm, skilled technical workers are needed to lay the cut diaphragm on the partition without wrinkles, displacement and other problems. However, due to the extremely large size of the existing electrolytic cells, manual laying of the diaphragm is time-consuming and prone to errors. Summary of the Invention

[0006] In view of the above defects, the purpose of the present invention is to provide an electrolytic cell for electrolytic hydrogen production and an assembly stand thereof, aiming to solve the problem of increased deformation during welding in the prior art.

[0007] In order to solve the above technical problems, the technical solution of the present invention is:

[0008] An electrolytic cell for producing hydrogen by electrolysis comprises a first end plate and a second end plate, wherein a plurality of electrolytic chambers and a plurality of limiting columns are installed between the first end plate and the second end plate, wherein one end of the limiting column is connected to the first end plate, and the other end of the limiting column is connected to the second end plate, and the plurality of limiting columns are arranged around the electrolytic chamber; the electrolytic chamber is composed of an anode plate, a first supporting foam, a first partition, an isolation membrane, a second partition, a second supporting foam and a cathode plate arranged in sequence, the first partition comprises a first through hole, a placement groove and a limiting groove are provided at one end of the first through hole facing the membrane, the limiting groove is provided around the placement groove, the membrane is located in the placement groove, a limiting snap ring is provided in the limiting groove, and one end of the limiting snap ring covers the top of the placement groove; the end of the through hole away from the membrane covers the first supporting foam.

[0009] One end of the limiting clamp facing the second supporting foam is recessed toward the bottom of the limiting clamp to form a positioning groove, and the second supporting foam is arranged in the positioning groove.

[0010] Among them, an electrolytic cell assembly stand includes a support frame and a limit frame, wherein the support frame is hinged to the limit frame at one end facing the limit frame, and a support plate is provided at the end of the support frame away from the limit frame; a first telescopic cylinder is hinged to the bottom of the limit frame, and the telescopic end of the first telescopic cylinder is hinged to the end of the support frame facing the limit frame.

[0011] The distance between the hinge point between the support frame and the limiting frame and the bottom of the support frame is a, and the height of the support frame is b. .

[0012] Wherein, a fixing plate is further provided at one end of the support frame away from the limiting frame. The fixing plate and the support plate are arranged opposite to each other, one end of the fixing plate is hinged to the support frame, and a second telescopic cylinder is installed between the fixing plate and the support frame.

[0013] The fixing plate includes a first plate body and a second plate body, the diameter of the first plate body is smaller than the diameter of the second plate body, and when the electrolytic cell is clamped, the first plate body is arranged toward the supporting plate.

[0014] Among them, a first clamping plate and a second clamping plate are provided on the side wall of the support frame, the first clamping plate and the second clamping plate are arranged opposite to each other, an avoidance groove is provided on the side wall of the support frame, a third telescopic cylinder is installed on one end of the support frame facing the limit frame, one end of the first clamping plate is hinged in the avoidance groove, a first support arm is provided between the third telescopic cylinder and the first clamping plate, and a second support arm is provided between the second clamping plate and the third telescopic cylinder.

[0015] Among them, the first clamping plate and the second clamping plate have the same structure, and a clamping groove is provided at one end of the first clamping plate facing the second clamping plate, and a first clamping block and a second clamping block are installed in the clamping groove. The first clamping block and the second clamping block are arranged opposite to each other, and a support spring is provided between the first clamping block and the side wall of the clamping groove.

[0016] After adopting the above technical solution, the beneficial effects of the present invention are:

[0017] First, the limiting clamp cooperates with the first partition to position the diaphragm and the second supporting foam, preventing subsequent wrinkling that could lead to abnormal hydrogen production in the electrolyzer. Second, the support frame, limiting frame, and first telescopic cylinder cooperate to enable the assembled electrolyzer to be positioned horizontally. Third, the first clamping plate, second clamping plate, and third telescopic cylinder cooperate to clamp the first end plate of the electrolyzer, preventing it from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of an electrolyzer for producing hydrogen by electrolysis;

[0019] Figure 2 This is the structural diagram of the electrolysis chamber;

[0020] Figure 3 is a structural diagram of the first partition;

[0021] Figure 4 This is a bottom view of the limit snap ring;

[0022] Figure 5 The structural diagram of the assembly stand;

[0023] Figure 6 This is the structural diagram of the fixed plate;

[0024] Figure 7 is a structural diagram of the first splint;

[0025] Figure 8 2 is a cross-sectional view of the first splint.

[0026] In the figure: 100-first end plate, 110-second end plate, 120-limiting column, 130-electrolysis chamber, 1301-anode plate, 1302-first supporting foam, 1303-first separator, 1304-isolating membrane, 1305-second separator, 1306-second supporting foam, 1307-cathode plate, 1308-placement groove, 1309-limiting groove, 1310-limiting clamp, 1311 -positioning slot, 200-support frame, 201-limiting frame, 202-first telescopic cylinder, 204-support plate, 205-fixing plate, 206-second telescopic cylinder, 207-first clamping plate, 208-second clamping plate, 209-first support arm, 210-second support arm, 211-third telescopic cylinder, 212-clamping slot, 213-first clamping block, 214-second clamping block, 215-support spring. DETAILED DESCRIPTION

[0027] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] Example:

[0029] like Figure 1-4 As shown, an electrolytic cell for electrolytic hydrogen production includes a first end plate 100 and a second end plate 110, wherein a plurality of electrolytic chambers 130 and a plurality of limiting posts 120 are installed between the first end plate 100 and the second end plate 110, wherein one end of the limiting post 120 is connected to the first end plate 100, and the other end of the limiting post 120 is connected to the second end plate 110, and the plurality of limiting posts 120 are arranged around the electrolytic chamber 130; the electrolytic chamber 130 is composed of an anode plate 1301, a first supporting foam 1302, a first separator 1303, an isolation membrane 1304, and a second separator 1305, a second supporting foam 1306 and a cathode plate 1307 are arranged in sequence; the first partition 1303 includes a first through hole, and the first through hole is provided with a placement groove 1308 and a limiting groove 1309 at one end facing the diaphragm, the limiting groove 1309 is arranged around the placement groove 1308, the diaphragm is located in the placement groove 1308, and a limiting snap ring 1310 is provided in the limiting groove 1309, and one end of the limiting snap ring 1310 covers the top of the placement groove 1308; the end of the through hole away from the diaphragm covers the first supporting foam 1302.

[0030] To prevent the diaphragm from wrinkling, we need to fix it. To this end, this solution introduces a limit ring 1310. The diaphragm is placed flat in the placement groove 1308 and needs to be scraped flat. Then, the limit ring 1310 is placed in the limit groove 1309. The limit ring 1310 will flatten the edge of the diaphragm to prevent it from shifting due to device vibration, which may cause wrinkles in the diaphragm.

[0031] Wrinkles in the diaphragm are often caused by micro-movement of the second support foam 1306. Therefore, the second support foam 1306 needs to be separated from the diaphragm. The end of the stop ring 1310 facing the second support foam 1306 is recessed toward the bottom of the stop ring 1310 to form a positioning groove 1311, and the second support foam 1306 is positioned in the positioning groove 1311.

[0032] Since the electrolytic cell is extremely large, we need an assembly stand to assist in the installation of the electrolytic cell to assist workers in assembling the electrolytic cell.

[0033] For this reason, Figure 5-8 As shown, an electrolytic cell assembly stand includes a support frame 200 and a limiting frame 201. The end of the support frame 200 facing the limiting frame 201 is hinged to the limiting frame 201, and the end of the support frame 200 away from the limiting frame 201 is provided with a support plate 204. The bottom of the limiting frame 201 is hingedly connected to a first telescopic cylinder 202, and the telescopic end of the first telescopic cylinder 202 is hinged to the end of the support frame 200 facing the limiting frame 201. When assembling the electrolytic cell, the electrolytic cell is vertically arranged on the support plate 204. When we need to set the electrolytic cell horizontally, we only need to drive the first telescopic cylinder 202 to retract. At this time, the first telescopic cylinder 202 will drive the support frame 200 to rotate along the hinge point with the limiting frame 201. By controlling the retraction speed of the first telescopic cylinder 202, the support frame 200 will drive the electrolytic cell to slowly be placed horizontally.

[0034] In order to facilitate the support frame 200 to bear the force, the distance between the hinge point of the support frame 200 and the limiting frame 201 and the bottom of the support frame 200 is a, and the height of the support frame 200 is b. .

[0035] If the electrolytic cell is supported solely by the support plate 204, it is extremely likely to fall off during horizontal placement. To this end, a fixing plate 205 is further provided at the end of the support frame 200 away from the limiting frame 201. The fixing plate 205 is arranged opposite the support plate 204, and one end of the fixing plate 205 is hinged to the support frame 200. A second telescopic cylinder 206 is installed between the fixing plate 205 and the support frame 200. When the second telescopic cylinder 206 is extended, it drives the fixing plate 205 to rotate toward the end of the electrolytic cell away from the support plate 204. At this time, the fixing plate 205 and the support plate 204 will clamp the electrolytic cell to prevent it from falling off.

[0036] Preferably, the fixed plate 205 includes a first plate 2052 and a second plate 2051. The diameter of the first plate 2052 is smaller than that of the second plate 2051. When the electrolytic cell is clamped, the first plate 2052 is positioned toward the support plate 204. The support plate 204 and the fixed plate 205 in this embodiment have the same structure, except that one end of the support plate 204 is fixedly connected to the support frame 200.

[0037] In order to further prevent the electrolytic cell from falling off, a first clamping plate 207 and a second clamping plate 208 are provided on the side wall of the support frame 200. The first clamping plate 207 and the second clamping plate 208 are arranged opposite to each other. An avoidance groove is provided on the side wall of the support frame 200. A third telescopic cylinder 211 is installed on one end of the support frame 200 facing the limit frame 201. One end of the first clamping plate 207 is hinged in the avoidance groove. A first support arm 209 is provided between the third telescopic cylinder 211 and the first clamping plate 207, and a second support arm 210 is provided between the second clamping plate 208 and the third telescopic cylinder 211. The first clamping plate 207 and the second clamping plate 208 are both arranged around the first end plate 100 of the electrolytic cell. When the third telescopic cylinder 211 is extended, the first arm 209 drives the first clamping plate 207 to rotate toward the first end plate 100, and the second arm 210 drives the second clamping plate 208 to rotate toward the second end plate 110. Finally, the first clamping plate 207 and the second clamping plate 208 clamp the first end plate 100.

[0038] Preferably, the first clamping plate 207 and the second clamping plate 208 have the same structure. A clamping groove 212 is provided at one end of the first clamping plate 207 facing the second clamping plate 208. A first clamping block 213 and a second clamping block 214 are installed in the clamping groove 212. The first clamping block 213 and the second clamping block 214 are arranged opposite each other. A support spring 215 is provided between the first clamping block 213 and the side wall of the clamping groove 212. This design enables the clamping groove 212 to adapt to first end plates 100 of different thicknesses.

[0039] Similarly, the second end plate 110 of the electrolytic cell is provided with a clamping mechanism identical to that of the first end plate 100 .

[0040] In summary, this solution has the following advantages: First, the limiting clamp 1310 cooperates with the first partition 1303 to position the diaphragm and the second supporting foam 1306, preventing subsequent wrinkling that could lead to abnormal hydrogen production in the electrolyzer 4. Second, the cooperation between the support frame 200, the limiting frame 201, and the first telescopic cylinder 202 allows the assembled electrolyzer to be positioned horizontally. Third, the cooperation between the first clamping plate 207, the second clamping plate 208, and the third telescopic cylinder 211 allows the first end plate 100 of the electrolyzer to be clamped, preventing the electrolyzer from falling off.

[0041] The present invention is not limited to the above-mentioned specific implementation methods. Various changes made by ordinary technicians in this field based on the above-mentioned concept without creative work are all within the scope of protection of the present invention.

Claims

1. An electrolytic cell for producing hydrogen by electrolysis, comprising a first end plate (100) and a second end plate (110), wherein a plurality of electrolytic chambers (130) and a plurality of limiting columns (120) are installed between the first end plate (100) and the second end plate (110), wherein one end of the limiting column (120) is connected to the first end plate (100), and the other end of the limiting column (120) is connected to the second end plate (110), and the plurality of limiting columns (120) are arranged around the electrolytic chamber (130); the electrolytic chamber (130) is composed of an anode plate (1301), a first supporting foam (1302), a first separator (1303), an isolation membrane (1304), a second separator (1305), a second supporting foam (1306) and a cathode plate (1307) arranged in sequence, characterized in that: The first partition plate (1303) comprises a first through hole, and a placement groove (1308) and a limiting groove (1309) are arranged at one end of the first through hole facing the diaphragm, the limiting groove (1309) is arranged around the placement groove (1308), the diaphragm is located in the placement groove (1308), and a limiting clamp ring (1310) is arranged in the limiting groove (1309), and one end of the limiting clamp ring (1310) covers the top of the placement groove (1308); the end of the through hole away from the diaphragm covers the first supporting foam (1302).

2. The electrolytic cell for producing hydrogen by electrolysis according to claim 1, characterized in that: One end of the limiting clamp (1310) facing the second supporting foam (1306) is recessed toward the bottom of the limiting clamp (1310) to form a positioning groove (1311), and the second supporting foam (1306) is arranged in the positioning groove (1311).

3. The electrolytic cell for producing hydrogen by electrolysis according to claim 2, characterized in that: A stand for assembling an electrolytic cell for producing hydrogen by electrolysis, further comprising a support frame (200) and a limiting frame (201); one end of the support frame (200) facing the limiting frame (201) is hinged to the limiting frame (201); one end of the support frame (200) away from the limiting frame (201) is provided with a support plate (204); a first telescopic cylinder (202) is hinged to the bottom of the limiting frame (201); a telescopic end of the first telescopic cylinder (202) is hinged to one end of the support frame (200) facing the limiting frame (201); The distance between the hinge point between the support frame (200) and the limiting frame (201) and the bottom of the support frame (200) is a, and the height of the support frame (200) is b. ; A fixing plate (205) is further provided at one end of the support frame (200) away from the limiting frame (201); the fixing plate (205) and the support plate (204) are arranged opposite to each other; one end of the fixing plate (205) is hinged to the support frame (200); and a second telescopic cylinder (206) is installed between the fixing plate (205) and the support frame (200); The fixing plate (205) comprises a first plate body and a second plate body, the diameter of the first plate body is smaller than the diameter of the second plate body, and when the electrolytic cell is clamped, the first plate body is arranged toward the supporting plate (204).

4. The electrolytic cell for producing hydrogen by electrolysis according to claim 3, characterized in that: A first clamping plate (207) and a second clamping plate (208) are arranged on the side wall of the support frame (200), the first clamping plate (207) and the second clamping plate (208) are arranged opposite to each other, an avoidance groove is arranged on the side wall of the support frame (200), a third telescopic cylinder (211) is installed at one end of the support frame (200) facing the limit frame (201), one end of the first clamping plate (207) is hinged in the avoidance groove, a first support arm (209) is arranged between the third telescopic cylinder (211) and the first clamping plate (207), and a second support arm (210) is arranged between the second clamping plate (208) and the third telescopic cylinder (211).

5. The electrolytic cell for producing hydrogen by electrolysis according to claim 4, characterized in that: The first clamping plate (207) and the second clamping plate (208) have the same structure. A clamping groove (212) is provided at one end of the first clamping plate (207) facing the second clamping plate (208). A first clamping block (213) and a second clamping block (214) are installed in the clamping groove (212). The first clamping block (213) and the second clamping block (214) are arranged opposite to each other. A supporting spring (215) is provided between the first clamping block (213) and the side wall of the clamping groove (212).

Images