PEM electrolytic bath

Abstract

The PEM electrolytic bath comprises a box body, a mounting hole is formed in the top of the box body in a penetrating mode, a plurality of sliding blocks are fixedly connected to the inner bottom of the box body, an opening and closing assembly is arranged on the inner top of the box body, and an exhaust pipe and an air inlet pipe are connected to the top of the box body in a penetrating mode. Valves are fixedly connected to the top ends of the exhaust pipe and the gas inlet pipe, a fan is fixedly connected to the top end of one of the valves, a first hydrogen pipe is fixedly connected to the inner side wall of the mounting hole, and a hydrogen-oxygen mixture storage tank and a hydrogen storage tank are arranged on one side of the surface of the box body. By means of the structure, the oxygen pipe is used for detecting the hydrogen content in the oxygen discharging process, the alarm can be used for reminding in time when the hydrogen content is too high, the fan is combined for rapidly diluting the internal hydrogen content, maintenance personnel can conduct maintenance in time, and the maintenance efficiency is improved. The safety can be effectively guaranteed, and the practicability is higher.

Description

Technical Field

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

[0002] A PEM electrolytic cell is an electrolysis device that uses a solid proton exchange membrane (PEM) as an electrolyte. It can efficiently decompose water into hydrogen and oxygen within a wide range of temperatures and pressures. The core components of a PEM electrolytic cell include a proton exchange membrane, electrodes (anode and cathode), a gas diffusion layer, and a flow field plate. These components together constitute the basic structure of the electrolytic cell, enabling the electrolysis process to occur at a lower voltage, thereby improving the energy conversion efficiency.

[0003] In the prior art, the detection method of a PEM electrolytic cell is usually off-line detection, which cannot achieve real-time monitoring of the state of the PEM membrane. After the detection is completed, the pipeline for transporting hydrogen cannot be closed in time. Since hydrogen is an inflammable and explosive gas, it is easy to generate safety hazards. Moreover, the inside of the box body is filled with a hydrogen-oxygen mixture, and the staff cannot detect the PEM electrolytic cell in time, which delays production and reduces work efficiency. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that the detection method of a PEM electrolytic cell is usually off-line detection, which cannot achieve real-time monitoring of the state of the PEM membrane. After the detection is completed, the pipeline for transporting hydrogen cannot be closed in time. Since hydrogen is an inflammable and explosive gas, it is easy to generate safety hazards. Moreover, the inside of the box body is filled with a hydrogen-oxygen mixture, and the staff cannot detect the PEM electrolytic cell in time, which delays production and reduces work efficiency.

[0005] To solve the above technical problem, a technical solution adopted by the utility model is: to provide a PEM electrolytic cell, including a box body. An installation hole is penetrated and opened at the top of the box body. A plurality of sliders are fixedly connected to the inner bottom of the box body. An opening and closing assembly is arranged at the inner top of the box body. An exhaust pipe and an intake pipe are penetrated and connected to the top of the box body. Valves are fixedly connected to the tops of the exhaust pipe and the intake pipe. A blower is fixedly connected to the top of one of the valves.

[0006] The inner side wall of the installation hole is fixedly connected with a first hydrogen pipe. On one side of the surface of the box body, a hydrogen-oxygen mixture storage tank and a hydrogen storage tank are arranged. A first connecting pipe is fixedly connected between the hydrogen-oxygen mixture storage tank and another valve. A second connecting pipe is fixedly connected between the hydrogen storage tank and the first hydrogen pipe. The inner bottom of the box body is fixedly connected with a PEM electrolytic cell body. A one-way valve pipe is fixedly connected to the surface of the PEM electrolytic cell body. One end of each one-way valve pipe penetrates and extends to the outside of the box body. An oxygen pipe is fixedly installed on the surface of the PEM electrolytic cell body close to the one-way valve pipe.

[0007] Preferably, the opening and closing assembly includes a rotating plate. A plurality of sliding grooves are formed in the bottom of the rotating plate in a penetrating manner. A plurality of sliders are all slidably connected to the inside of the sliding grooves. A plurality of connecting frames are rotatably connected to the bottom of the rotating plate. A plurality of connecting columns are fixedly connected to the bottom of the box body. A fixing ring is fixedly connected to the bottom of the plurality of connecting columns in a sleeved manner. A plurality of baffles are rotatably connected to the outside of the plurality of connecting columns in a sleeved manner. The plurality of baffles are located on one side of the fixing ring. One end of each of the plurality of connecting frames is rotatably connected to one of the plurality of baffles respectively. By opening and closing between the baffles, it is convenient to open and close after installation.

[0008] Preferably, a hydrogen concentration detector is fixedly connected to the inner side wall of the box body. An alarm is fixedly installed on one side of the surface of the hydrogen concentration detector. The hydrogen concentration detector and the alarm are electrically connected, and an alarm reminder can be given when the hydrogen content in oxygen is too high.

[0009] Preferably, a second hydrogen pipe is fixedly connected to the air outlet hole of the PEM electrolytic cell body. The top end of the second hydrogen pipe is fixedly connected to the bottom end of the fixing ring, which is convenient for collecting the generated hydrogen.

[0010] Preferably, an arc gear disc is fixedly connected to one side of the surface of the rotating plate. A gear is rotatably connected to the bottom of the box body. The gear is meshed with the arc gear disc, and the rotation of the gear can engage the arc gear disc to rotate reciprocally.

[0011] Preferably, a stepping motor is fixedly connected to the top of the box body. The output end of the stepping motor penetrates and extends to the inside of the box body and is fixedly connected to the top of the gear. By setting the stepping motor, the gear can be reciprocally driven, which is very convenient.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. By setting the above structure, the utility model detects the hydrogen content during the oxygen discharge process through the oxygen pipe. When the hydrogen content is too high, the alarm can be used for timely reminder, and combined with the fan, the hydrogen content inside can be quickly diluted, which is beneficial for maintenance personnel to carry out maintenance in a timely manner, and the safety can be effectively guaranteed, and the practicability is stronger.

[0014] 2. By setting structures such as a rotating plate, a connecting frame and a baffle, the rotating plate drives the connecting frame to rotate, and the connecting frame drives the baffle to rotate, so as to achieve the effect of blocking the installation hole, so as to avoid stopping collection when the hydrogen content in the oxygen is too high, and effectively prevent the phenomenon of hydrogen flowing back again after stopping work, improve the working efficiency of hydrogen collection, and the practicability is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional view of a PEM electrolyzer of the present utility model;

[0016] Figure 2 is a schematic diagram of the internal structure of the first perspective box body of a PEM electrolyzer of the present utility model;

[0017] Figure 3 is a schematic diagram of the internal structure of the second perspective box body of a PEM electrolyzer of the present utility model;

[0018] Figure 4 is a schematic diagram of the structure of the opening and closing assembly of a PEM electrolyzer of the present utility model;

[0019] Figure 5 is a schematic diagram of the structure of the installation hole and the slider of a PEM electrolyzer of the present utility model.

[0020] In the figure: 1, box body; 2, PEM electrolyzer body; 3, exhaust pipe; 4, hydrogen concentration detector; 5, alarm; 6, inlet pipe; 7, fan; 8, valve; 9, first connecting pipe; 10, hydrogen-oxygen mixture storage tank; 11, hydrogen storage tank; 12, second connecting pipe; 13, first hydrogen pipe; 14, rotating plate; 15, one-way valve pipe; 16, connecting frame; 17, fixed ring; 18, connecting column; 19, chute; 20, slider; 21, baffle; 22, arc gear disk; 23, gear; 24, installation hole; 25, second hydrogen pipe; 26, stepper motor; 27, oxygen pipe. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The following describes in detail the preferred embodiments of the present utility model with reference to the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 5, a PEM electrolyzer, comprising a box body 1, an installation hole 24 is penetrated and opened at the top of the box body 1, a plurality of sliders 20 are fixedly connected to the inner bottom of the box body 1, an opening and closing assembly is arranged at the inner top of the box body 1, an exhaust pipe 3 and an air inlet pipe 6 are penetrated and connected to the top of the box body 1, valves 8 are fixedly connected to the tops of the exhaust pipe 3 and the air inlet pipe 6, and a blower 7 is fixedly connected to the top of one of the valves 8;

[0023] The inner side wall of the installation hole 24 is fixedly connected with a first hydrogen pipe 13, a hydrogen-oxygen mixture storage tank 10 and a hydrogen storage tank 11 are arranged on one side of the surface of the box body 1, a first connecting pipe 9 is fixedly connected between the hydrogen-oxygen mixture storage tank 10 and the other valve 8, a second connecting pipe 12 is fixedly connected between the hydrogen storage tank 11 and the first hydrogen pipe 13, a PEM electrolyzer body 2 is fixedly connected to the inner bottom of the box body 1, a check valve pipe 15 is fixedly connected to the surface of the PEM electrolyzer body 2, one end of the check valve pipe 15 penetrates and extends to the outside of the box body 1, an oxygen pipe 27 is fixedly installed on the surface of the PEM electrolyzer body 2 close to the check valve pipe 15, a hydrogen concentration detector 4 is fixedly connected to the inner side wall of the box body 1, an alarm 5 is fixedly installed on one side of the surface of the hydrogen concentration detector 4, and the hydrogen concentration detector 4 and the alarm 5 are electrically connected, which can give an alarm reminder when the hydrogen content in the oxygen is too high. The air outlet of the PEM electrolyzer body 2 is fixedly connected with a second hydrogen pipe 25, and the top end of the second hydrogen pipe 25 is fixedly connected with the bottom end of a fixing ring 17, which is convenient for collecting the generated hydrogen. A stepping motor 26 is fixedly connected to the top of the box body 1, and the output end of the stepping motor 26 penetrates and extends to the inside of the box body 1 and is fixedly connected with the top of a gear 23. By setting the stepping motor 26, the gear 23 can be reciprocally driven, which is very convenient.

[0024] As Figure 3 and Figure 4 shown, the opening and closing assembly includes a rotating plate 14, a plurality of sliding grooves 19 are penetrated and opened at the bottom of the rotating plate 14, and a plurality of sliders 20 are all slidably connected to the inside of the sliding grooves 19. A plurality of connecting frames 16 are rotatably connected to the bottom of the rotating plate 14. A plurality of connecting columns 18 are fixedly connected to the bottom of the box body 1. The bottoms of the plurality of connecting columns 18 are sleeved and fixedly connected with a fixing ring 17. A plurality of baffles 21 are rotatably connected to the outside of the plurality of connecting columns 18. The plurality of baffles 21 are located on one side of the fixing ring 17. One ends of the plurality of connecting frames 16 are respectively rotatably connected with the plurality of baffles 21. By using the opening and closing between the baffles 21, it is convenient to open and close the installation hole 24. An arc gear disk 22 is fixedly connected to one side of the surface of the rotating plate 14. A gear 23 is rotatably connected to the bottom of the box body 1. The gear 23 is meshed with the arc gear disk 22. By using the rotation of the gear 23, the arc gear disk 22 can be reciprocally rotated.

[0025] When the utility model is in use, electrolyzed water enters the interior of the PEM electrolytic cell body 2 through the one-way valve pipe 15. The PEM electrolytic cell body 2 is started, and the hydrogen gas produced enters the first hydrogen gas pipe 13 through the second hydrogen gas pipe 25, and enters the interior of the hydrogen gas storage tank 11 through the first hydrogen gas pipe 13 and the second connecting pipe 12. The remaining oxygen after decomposition enters the interior of the hydrogen-oxygen mixture storage tank 10 through the exhaust pipe 3 and the first connecting pipe 9. When the hydrogen gas concentration detector 4 detects that the hydrogen gas content is too high, the alarm 5 emits a beeping sound, and the mounting hole 24 is started. The mounting hole 24 drives the transmission gear 23 to rotate, the gear 23 drives the arc gear disk 22 to rotate, the arc gear disk 22 drives the rotating plate 14 to rotate along the slider 20, the rotating plate 14 drives the connecting frame 16 to rotate, and the connecting frame 16 drives the baffle plate 21 to rotate along the connecting column 18 to close the mounting hole 24, preventing the hydrogen-oxygen mixture from being discharged. After the beeping sound attracts the staff, the staff unscrews the valve 8, and starts the blower 7 to blow external air into the interior of the box body 1, and blows the internal hydrogen-oxygen mixture into the interior of the hydrogen-oxygen mixture storage tank 10, which is convenient for the staff to detect and repair the PEM electrolytic cell body 2.

[0026] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A PEM electrolyzer, comprising a box body (1), characterized in that: The top of the box body (1) is provided with a mounting hole (24), the inner bottom of the box body (1) is fixedly connected with a plurality of sliders (20), the inner top of the box body (1) is provided with an opening and closing assembly, the top of the box body (1) is connected with an exhaust pipe (3) and an air intake pipe (6), the top ends of the exhaust pipe (3) and the air intake pipe (6) are fixedly connected with valves (8), and the top end of one of the valves (8) is fixedly connected with a fan (7); A first hydrogen pipe (13) is fixedly connected to the inner side wall of the mounting hole (24); a hydrogen-oxygen mixture storage tank (10) and a hydrogen storage tank (11) are arranged on one side of the surface of the box body (1); a first connecting pipe (9) is fixedly connected between the hydrogen-oxygen mixture storage tank (10) and another valve (8); a second connecting pipe (12) is fixedly connected between the hydrogen storage tank (11) and the first hydrogen pipe (13); a PEM electrolyzer body (2) is fixedly connected to the inner bottom of the box body (1); a one-way valve pipe (15) is fixedly connected to the surface of the PEM electrolyzer body (2); one end of the one-way valve pipe (15) extends through the outside of the box body (1); and an oxygen pipe (27) is fixedly installed on the surface of the PEM electrolyzer body (2) close to the one-way valve pipe (15).

2. A PEM electrolyzer according to claim 1, characterized in that: The opening and closing assembly comprises a rotating plate (14), a plurality of sliding grooves (19) are formed through the bottom of the rotating plate (14), a plurality of sliding blocks (20) are slidably connected to the inside of the sliding grooves (19), a plurality of connecting frames (16) are rotatably connected to the bottom of the rotating plate (14), a plurality of connecting columns (18) are fixedly connected to the bottom of the box body (1), a plurality of connecting columns (18) are sleeved and fixedly connected to the bottom of the plurality of connecting columns (18), a plurality of baffles (21) are sleeved and rotatably connected to the outside of the plurality of connecting columns (18), the plurality of baffles (21) are located on one side of the fixed ring (17), and one end of the plurality of connecting frames (16) is rotatably connected to the plurality of baffles (21) respectively.

3. A PEM electrolyzer according to claim 1, characterized in that: A hydrogen concentration detector (4) is fixedly connected to the inner wall of the box body (1), an alarm (5) is fixedly installed on one side of the surface of the hydrogen concentration detector (4), and the hydrogen concentration detector (4) and the alarm (5) are electrically connected.

4. A PEM electrolyzer according to claim 1, characterized in that: The gas outlet of the PEM electrolyzer body (2) is fixedly connected to a second hydrogen pipe (25), and the top end of the second hydrogen pipe (25) is fixedly connected to the bottom end of the fixing ring (17).

5. A PEM electrolyzer according to claim 2, characterized in that: An arc-shaped gear plate (22) is fixedly connected to one side of the surface of the rotating plate (14), and a gear (23) is rotatably connected to the bottom of the box body (1), and the gear (23) is meshingly connected to the arc-shaped gear plate (22).

6. A PEM electrolyzer according to claim 5, characterized in that: A stepper motor (26) is fixedly connected to the top of the box body (1), and an output end of the stepper motor (26) extends through the interior of the box body (1) and is fixedly connected to the top of the gear (23).

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