PEM electrolytic bath pressure applying device

Abstract

The utility model relates to the technical field of PEM electrolytic baths, in particular to a PEM electrolytic bath pressure applying device which comprises an electrolytic bath and a pressure applying pipe, the upper end of the electrolytic bath is communicated and fixedly connected with a connecting pipe, one end of the pressure applying pipe is connected with the connecting pipe in a sealing mode, and the pressure applying pipe is communicated and fixedly connected with a transfer assembly used for preventing backflow of products in the electrolytic bath. The transfer assembly comprises a fixing box, the fixing box is fixedly connected to the pressure applying pipe in a communicating mode, a rectangular frame is fixedly connected to the inner wall of the fixing box, and two sealing plates are symmetrically and rotationally connected to the inner wall of the fixing box; the transfer assembly is mounted on the pressure applying pipe, the sealing plates are stamped by pressure during pressure applying, so that the two sealing plates rotate, the pressure enters the electrolytic bath through the pipeline and the connecting pipe, and when pressure applying is stopped, the sealing plates abut against the rectangular frame under the action of the elastic supporting assembly, and gas cannot penetrate through the transfer assembly; therefore, the gas generated in the electrolytic bath is prevented from reversely entering the pressure transmitter or deeper part of the pressure applying pipe through the pressure applying pipe.

Description

Technical Field

[0001] The utility model relates to the field of PEM electrolytic cells, in particular to a pressure applying device for a PEM electrolytic cell. Background Art

[0002] The PEM electrolyzer uses a proton exchange membrane electrolyzer. Its working principle is that water molecules are first decomposed into oxygen and hydrogen ions under the catalytic action of an anode catalyst (such as a precious metal iridium catalyst). The hydrogen ions then pass through the PEM between the cathode and the anode, and then generate hydrogen under the catalysis of a cathode catalyst (such as a precious metal platinum catalyst). Since the hydrogen produced at the cathode and the oxygen produced at the anode are separated by the PEM, the hydrogen produced by PEM water electrolysis has high purity, and applying pressure to the PEM electrolyzer can improve the hydrogen production efficiency.

[0003] The existing PEM electrolyzer pressure application device mainly uses pressure transmitters, regulators and other equipment to adjust the cell pressure. The pressure transmitter pressure point is set at the top of the oxygen separator, and the pressure is applied to the inside of the PEM electrolyzer in a controlled manner to ensure the stability of the PEM electrolyzer pressure.

[0004] However, when the pressure transmitter stops applying pressure to the electrolyzer through the pipeline, the gas generated in the electrolyzer will reversely enter the pressure transmitter or deeper into the pipeline through the pipeline, thereby reducing the amount of electrolysis products. Therefore, a PEM electrolyzer pressure application device is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a pressure applying device for a PEM electrolyzer to solve the problems raised in the above background technology.

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

[0007] A PEM electrolyzer pressure applying device comprises an electrolyzer and a pressure applying tube, wherein the upper end of the electrolyzer is connected and fixedly connected with a connecting tube, one end of the pressure applying tube is sealedly connected to the connecting tube, and a transfer component for preventing backflow of products in the electrolyzer is connected and fixedly connected to the pressure applying tube;

[0008] The transfer assembly includes a fixed box, which is connected and fixed to the pressure pipe, a rectangular frame is fixed to the inner wall of the fixed box, two groups of sealing plates are symmetrically rotated and connected to the inner wall of the fixed box, the upper ends of the two groups of sealing plates are abutted and matched with the lower end of the rectangular frame, the ends of the two groups of sealing plates are abutted and sealed, and two groups of elastic support components are symmetrically rotated and connected to the inner wall of the fixed box, and the two groups of elastic support components are respectively abutted and matched with the lower ends of the two groups of sealing plates.

[0009] Preferably, the elastic support assembly includes a support plate, one end of the support plate is rotatably connected to the inner wall of the fixed box, and the other end abuts against the lower end of the sealing plate, and a spring is fixedly connected between the side wall of the fixed box and the side wall of the support plate.

[0010] Preferably, a sealing ring is fixedly connected to the inner wall of the rectangular frame, the lower end of the sealing ring abuts and cooperates with the upper end of the sealing plate, the ends of the two groups of sealing plates are fixedly connected with sealing gaskets, and the two groups of sealing gaskets abut and cooperate with each other.

[0011] Preferably, a fixing ring is fixedly connected to the side wall at the end of the pressure tube, and a sliding ring is slidably connected to the side wall of the pressure tube. The sliding ring is located on the side of the fixing ring away from the electrolytic cell. A connecting plate is fixedly connected to one side of the sliding ring, and a threaded ring is fixedly connected to the end of the connecting plate. The threaded ring is threadedly connected to the outer wall of the connecting tube.

[0012] Preferably, a plurality of groups of plug rods are inserted into the threaded ring, one end of the plurality of groups of plug rods is fixedly connected to a connecting ring, the connecting ring is located between the threaded ring and the fixed ring, and one end of the plurality of groups of plug rods away from the connecting ring is plugged into and matched with the upper end of the electrolytic cell.

[0013] Preferably, the multiple groups of the rod side walls are commonly fixed with an abutment ring, which abuts against the upper end of the electrolytic cell, and the multiple groups of rod side walls are each sleeved with a spring 2, one end of the multiple groups of spring 2 is fixed to the threaded ring, and the other end is fixed to the abutment ring.

[0014] Beneficial effects of the utility model:

[0015] The utility model installs a transfer component on the pressure pipe. When pressure is applied, the pressure punches the sealing plate, causing the two groups of sealing plates to rotate, and the pressure enters the electrolytic cell through the pipeline and the connecting pipe. When the pressure is stopped, the sealing plate abuts against the rectangular frame under the action of the elastic support component, and the gas cannot pass through the transfer component, thereby preventing the gas generated in the electrolytic cell from reversely entering the pressure transmitter or deeper into the pressure pipe through the pressure pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0019] Figure 3 yes Figure 1 A schematic diagram of the structure at A;

[0020] Figure 4 yes Figure 2 A schematic diagram of the structure at B;

[0021] Figure 5 yes Figure 2 A schematic diagram of the structure at position C of FIG.

[0022] The reference numerals in the figures are as follows:

[0023] 1. Electrolytic cell; 2. Pressure tube; 3. Fixed box; 4. Rectangular frame; 5. Sealing ring; 6. Sealing plate; 7. Sealing pad; 8. Support plate; 9. Spring 1; 10. Fixed ring; 11. Sliding ring; 12. Connecting plate; 13. Threaded ring; 14. Connecting tube; 15. Connecting ring; 16. Insert rod; 17. Spring 2; 18. Abutment ring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. 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.

[0025] A PEM electrolyzer pressure applying device, such as Figure 1-Figure 5 As shown, it includes an electrolytic cell 1 and a pressure pipe 2. The electrolytic cell 1 is provided with a liquid inlet pipe, a liquid outlet pipe, an air outlet pipe and other structures. It is a prior art. The upper end of the electrolytic cell 1 is connected and fixedly connected with a connecting pipe 14. One end of the pressure pipe 2 is sealed and connected with the connecting pipe 14. The pressure pipe 2 is connected and fixedly connected with a transfer component for preventing the backflow of the product in the electrolytic cell 1.

[0026] The transfer assembly includes a fixed box 3, which is connected and fixedly connected to the pressure pipe 2. A rectangular frame 4 is fixedly connected to the inner wall of the fixed box 3. The outer wall of the rectangular frame 4 is fitted and fixedly connected to the inner wall of the fixed box 3. Two groups of sealing plates 6 are symmetrically rotated and connected to the inner wall of the fixed box 3. Three sides of each group of sealing plates 6 are fitted with the fixed box 3. The upper ends of the two groups of sealing plates 6 are abutted and matched with the lower end of the rectangular frame 4. The ends of the two groups of sealing plates 6 are abutted and sealed. Two groups of elastic support components are symmetrically rotated and connected to the inner wall of the fixed box 3. The two groups of elastic support components are respectively abutted and matched with the lower ends of the two groups of sealing plates 6.

[0027] A transfer assembly is installed on the pressure tube 2. When pressure is applied, the pressure stamps the sealing plate 6, causing the two groups of sealing plates 6 to rotate, and the end of the elastic support assembly slides and abuts against the lower end of the sealing plate 6. The pressure enters the electrolytic cell 1 through the pipeline and the connecting pipe 14. When the pressure is stopped, the sealing plate 6 abuts and seals against the rectangular frame 4 under the action of the elastic support assembly. The two groups of sealing ends abut and seal, and the gas cannot pass through the transfer assembly, thereby preventing the gas generated in the electrolytic cell 1 from reversely entering the pressure transmitter or deeper into the pressure tube 2 through the pressure tube 2.

[0028] The elastic support assembly includes a support plate 8, one end of which is rotatably connected to the inner wall of the fixed box 3, and the other end is abutted against the lower end of the sealing plate 6. A spring 9 is fixed between the side wall of the fixed box 3 and the side wall of the support plate 8.

[0029] like Figure 5 As shown, when pressure is applied, the sealing plate 6 rotates, squeezing one end of the support plate 8, and the other end of the support plate 8 slides under the lower end of the sealing plate 6, and the elastic potential energy of the spring 9 increases. The spring 9 is always in a stretched state. When the pressure is finished, the upper end surface of the sealing plate 6 is not subjected to force, and the spring 9 pulls the support plate 8 to rotate, so that the support plate 8 supports the sealing plate 6 to close, thereby sealing the two sets of sealing plates 6.

[0030] A sealing ring 5 is fixedly connected to the inner wall of the rectangular frame 4 , and the lower end of the sealing ring 5 abuts and cooperates with the upper end of the sealing plate 6 . The ends of the two groups of sealing plates 6 are fixedly connected with sealing pads 7 , and the two groups of sealing pads 7 abut and cooperate with each other.

[0031] like Figure 5 As shown, the sealing ring 5 seals the sealing plate 6 and the rectangular frame 4, and the sealing gasket 7 seals the ends of the two groups of sealing plates 6 against each other.

[0032] A fixing ring 10 is fixedly connected to the side wall of the end of the pressure tube 2, and a sliding ring 11 is slidably connected to the side wall of the pressure tube 2. The sliding ring 11 is located on the side of the fixing ring 10 away from the electrolytic cell 1. A connecting plate 12 is fixedly connected to one side of the sliding ring 11, and a threaded ring 13 is fixedly connected to the end of the connecting plate 12. The threaded ring 13 is threadedly connected to the outer wall of the connecting tube 14.

[0033] like Figure 1-Figure 3 As shown, after the pressure tube 2 and the connecting tube 14 are installed, since the outer wall of the connecting tube 14 is provided with threads, the threaded ring 13 is rotated to make the threaded ring 13 and the outer wall of the connecting tube 14 threadedly connected, thereby reinforcing the pressure tube 2 and the connecting tube 14 to prevent the pressure tube 2 and the connecting tube 14 from loosening due to high pressure, and the fixing ring 10 prevents the sliding ring 11 from detaching from the pressure tube 2.

[0034] The threaded ring 13 is plugged with multiple groups of plug rods 16, one end of which is fixedly connected to a connecting ring 15. The connecting ring 15 is located between the threaded ring 13 and the fixed ring 10, and one end of the multiple groups of plug rods 16 away from the connecting ring 15 is plugged into the upper end of the electrolytic cell 1.

[0035] like Figure 1-Figure 3 As shown, after the threaded ring 13 is connected to the connecting pipe 14 , the plug rod 16 is plugged into the upper end of the electrolytic cell 1 to prevent the threaded ring 13 from rotating, and the connecting ring 15 is pulled to control the plug rod 16 to separate from the electrolytic cell 1 .

[0036] The side walls of the multiple groups of the insertion rods 16 are commonly fixed with abutment rings 18, which abut against the upper end of the electrolytic cell 1. The side walls of the multiple groups of the insertion rods 16 are all sleeved with springs 17, one end of the multiple groups of springs 17 is fixed to the threaded ring 13, and the other end is fixed to the abutment ring 18.

[0037] like Figure 1-Figure 3 As shown, the spring 2 17 is always in a compressed state, squeezing the abutment ring 18 so that the insertion rod 16 is tightly plugged into the upper end of the electrolytic cell 1, thereby increasing the structural stability.

[0038] The working principle of a PEM electrolyzer pressure applying device provided by the utility model is as follows:

[0039] A transfer assembly is installed on the pressure tube 2. When pressure is applied, the pressure stamps the sealing plate 6, causing the two groups of sealing plates 6 to rotate, and the support plate 8 slides and abuts against the lower end of the sealing plate 6, and the pressure enters the electrolytic cell 1 through the pipeline and the connecting pipe 14. When the pressure is stopped, the sealing plate 6 abuts and seals with the rectangular frame 4 under the action of the spring 9 and the support plate 8, and the two groups of sealing ends abut and seal, and the gas cannot pass through the transfer assembly, thereby preventing the gas generated in the electrolytic cell 1 from reversely entering the pressure transmitter or deeper into the pressure tube 2 through the pressure tube 2.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A PEM electrolyzer pressure applying device, comprising an electrolyzer (1) and a pressure applying tube (2), characterized in that: The upper end of the electrolytic cell (1) is connected and fixedly connected with a connecting pipe (14), one end of the pressure tube (2) is sealedly connected to the connecting pipe (14), and the pressure tube (2) is connected and fixedly connected with a transfer component for preventing the backflow of products in the electrolytic cell (1); The transfer assembly comprises a fixed box (3), the fixed box (3) is connected and fixedly connected to the pressure pipe (2), the inner wall of the fixed box (3) is fixedly connected to a rectangular frame (4), the inner wall of the fixed box (3) is symmetrically rotatably connected to two groups of sealing plates (6), the upper ends of the two groups of sealing plates (6) are both abutted and matched with the lower ends of the rectangular frame (4), the ends of the two groups of sealing plates (6) are abutted and sealed, and the inner wall of the fixed box (3) is symmetrically rotatably connected to two groups of elastic support components, and the two groups of elastic support components are respectively abutted and matched with the lower ends of the two groups of sealing plates (6).

2. A PEM electrolyzer pressure applying device according to claim 1, characterized in that: The elastic support assembly comprises a support plate (8), one end of the support plate (8) is rotatably connected to the inner wall of the fixed box (3), and the other end is abutted against the lower end of the sealing plate (6), and a spring (9) is fixedly connected between the side wall of the fixed box (3) and the side wall of the support plate (8).

3. A PEM electrolyzer pressure applying device according to claim 1, characterized in that: A sealing ring (5) is fixedly connected to the inner wall of the rectangular frame (4), the lower end of the sealing ring (5) is in abutment with the upper end of the sealing plate (6), the ends of the two groups of sealing plates (6) are fixedly connected to sealing pads (7), and the two groups of sealing pads (7) are in abutment with each other.

4. A PEM electrolyzer pressure applying device according to claim 1, characterized in that: A fixing ring (10) is fixedly connected to the side wall of the end of the pressure tube (2), and a sliding ring (11) is slidably connected to the side wall of the pressure tube (2). The sliding ring (11) is located on a side of the fixing ring (10) away from the electrolytic cell (1). A connecting plate (12) is fixedly connected to one side of the sliding ring (11), and a threaded ring (13) is fixedly connected to the end of the connecting plate (12). The threaded ring (13) is threadedly connected to the outer wall of the connecting tube (14).

5. A PEM electrolyzer pressure applying device according to claim 4, characterized in that: A plurality of groups of plug rods (16) are plugged into the threaded ring (13), one end of each of the plurality of groups of plug rods (16) being fixedly connected to a connecting ring (15), the connecting ring (15) being located between the threaded ring (13) and the fixing ring (10), and one end of each of the plurality of groups of plug rods (16) away from the connecting ring (15) being plugged into and matched with the upper end of the electrolytic cell (1).

6. A PEM electrolyzer pressure applying device according to claim 5, characterized in that: The side walls of the plurality of groups of the plug rods (16) are commonly fixedly connected with a contact ring (18), the contact ring (18) is in contact with the upper end of the electrolytic cell (1), and the side walls of the plurality of groups of the plug rods (16) are all sleeved with a second spring (17), one end of the plurality of groups of the second spring (17) is fixedly connected to the threaded ring (13), and the other end is fixedly connected to the contact ring (18).

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