Proton exchange membrane water electrolysis hydrogen production device and method

Abstract

The invention discloses a proton exchange membrane water electrolysis hydrogen production device and method, and belongs to the technical field of hydrogen production devices, the technical key points are as follows: the proton exchange membrane water electrolysis hydrogen production device comprises a bottom plate, an electrolysis tank is arranged on the bottom plate, hydrogen bottle replacement and collection operation can be automatically realized through an arranged gas storage and bottle replacement mechanism, and manual intervention on bottle replacement and gas collection treatment is not needed; the requirements of manual operation are greatly reduced, the cleaning operation of dirt and sediments on the surface of a pole column can be correspondingly completed while the gas collection bottle is switched for gas collection through the arranged pole column cleaning mechanism, and the efficient catalytic activity of an electrode is kept, so that the yield and purity of hydrogen are increased; by means of the arranged water supplementing mechanism, when the gas collection bottle completes gas collection and conducts switching gas collection of the next station, appropriate water supplementing operation is correspondingly conducted, the continuous hydrogen collection efficiency is improved, manual intervention is not needed, and therefore the overall operation efficiency is improved, and the production cost is reduced. The device has the advantages of convenience in automatically replacing the storage bottle, convenience in automatically replenishing water and convenience in automatically cleaning the electrode column.

Description

Technical Field

[0001] The present invention relates to the field of hydrogen production devices, and in particular to a proton exchange membrane water electrolysis hydrogen production device and method. Background Art

[0002] As the global awareness of environmental protection continues to increase, hydrogen energy, as a clean and efficient form of energy, is gradually gaining widespread attention. Hydrogen is a highly flammable, colorless, transparent, odorless and insoluble gas in water. It is an ideal secondary energy source and is widely used in petrochemical, electronics, metallurgical, food processing, aerospace and other fields.

[0003] Hydrogen production by water electrolysis is a relatively convenient method for producing hydrogen. Direct current is passed through an electrolytic cell filled with electrolyte, and water molecules undergo electrochemical reactions on the electrodes, decomposing into hydrogen and oxygen. Existing electrolysis devices will produce some by-products during the electrolysis process. These by-products will be adsorbed on the electrode columns in the electrolysis box, and scale will easily form over a long period of time, affecting the efficiency of hydrogen production by electrolysis, increasing the energy consumption of hydrogen production by water electrolysis, and raising the cost of use. In addition, most of the water electrolysis hydrogen production equipment currently uses water replenishment devices that are manually replenished. Although this method is simple, manual operation is required for each replenishment. At the same time, when the gas storage is full, manual operation is required to replace the storage bottle, which is time-consuming and labor-intensive and cannot meet actual use needs.

[0004] Therefore, it is necessary to provide a proton exchange membrane water electrolysis hydrogen production device and method to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the embodiments of the present invention is to provide a proton exchange membrane water electrolysis hydrogen production device and method, aiming to solve the technical problems raised in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A proton exchange membrane water electrolysis hydrogen production device, comprising a bottom plate, an electrolysis box is arranged on the bottom plate, a box cover is arranged on the electrolysis box, a proton exchange membrane and a cathode electrode column and an anode electrode column for electrolyzing water are arranged in the electrolysis box, a hydrogen outlet pipe is arranged on one side of the cathode electrode column, an oxygen outlet pipe is arranged on one side of the anode electrode column, the oxygen outlet pipe and the hydrogen outlet pipe are both connected to the inside of the electrolysis box, and further comprising:

[0008] A gas storage and bottle exchange mechanism, which is installed at the docking installation position of the oxygen outlet pipe and the hydrogen outlet pipe, and is used to replace the hydrogen storage bottle and the oxygen storage bottle for docking storage, and the number of hydrogen storage bottles and oxygen storage bottles is several, and the gas storage and bottle exchange mechanism includes a chain, a sliding plate and an electric clamping claw for driving the hydrogen storage bottle and the oxygen storage bottle to move and dock, the electric clamping claw is fixedly installed on the sliding plate, the sliding plate is slidably connected to the guide rail through a plurality of guide pulleys, the guide rail is fixedly installed on the first top plate, the chain is drivingly connected to the first top plate, and the sliding plate is installed on the chain;

[0009] The pole cleaning mechanism is installed at the outer connection of the cathode electrode column and the anode electrode column, and is synchronously driven by the gas storage and bottle exchange mechanism to clean the dirt on the cathode electrode column and the anode electrode column. The pole cleaning mechanism includes a scraper, a guide slide bar and a lifting plate for reciprocating cleaning. The scraper is fixedly installed on the lifting plate through the guide slide bar, and the guide slide bar is limitedly slidably connected to the electrolytic box, and the scraper is fixedly connected through a connecting rod;

[0010] The water replenishment mechanism is installed on one side of the electrolytic box and is synchronously driven by the gas storage and bottle exchange mechanism to perform synchronous water replenishment operations in the electrolytic box. The water replenishment mechanism includes a water replenishment box and a water tank for water replenishment connection. The water replenishment box is provided with a piston plate for reciprocating water pumping and transportation connection, and the water replenishment box is connected to the interior of the electrolytic box through a water injection pipe and a connecting water pipe.

[0011] As a further solution of the present invention, the gas storage and bottle exchange mechanism also includes a first sprocket and a second sprocket for driving the hydrogen storage bottle and the oxygen storage bottle clamped by the electric clamp to switch the work positions, the first sprocket and the second sprocket are both transmission connected to the chain, the first sprocket is rotatably connected to the first top plate through a first connecting shaft, the second sprocket is rotatably connected to the first top plate through a second connecting shaft, the first top plate is fixedly installed on the box cover, the first connecting shaft is rotatably connected to the third connecting shaft through a bevel gear pair, the third connecting shaft is rotatably installed on the inside of the box cover through a fifth connecting shaft, the fifth connecting shaft is fixedly connected to the output shaft of the driving motor, the driving motor is fixedly installed on the outside of the electrolytic box, and the first top plate is fixedly connected to the second top plate through a fixing column.

[0012] As a further solution of the present invention, the gas storage and bottle exchange mechanism also includes an electric push rod and a limit frame for limiting the docking of the hydrogen storage bottle and the oxygen storage bottle, the limit frame is fixedly connected to the air guide pipe through an air pipe fixing frame, the air guide pipe is fixedly connected to the hydrogen outlet pipe and the oxygen outlet pipe through an elastic hose, the hydrogen outlet pipe and the oxygen outlet pipe are both provided with a second control valve, the air pipe fixing frame is fixedly connected to the output end of the electric push rod, the electric push rod is fixedly installed on the outside of the electrolytic box, and the hydrogen storage bottle and the oxygen storage bottle are both provided with a first control valve.

[0013] As a further solution of the present invention, the pole cleaning mechanism also includes an eccentric wheel for driving the scraper to move back and forth for cleaning. The eccentric wheel is rotatably installed inside the box cover through a fifth connecting shaft, and the eccentric wheel is rotatably installed on one side of the lifting plate. A plurality of springs are arranged at the connection between the lifting plate and the electrolytic box.

[0014] As a further solution of the present invention, the cathode electrode column and the anode electrode column are both installed inside the electrolytic box through a pole mounting seat, and the proton exchange membrane is fixedly installed inside the electrolytic box through a connecting frame.

[0015] As a further solution of the present invention, the water replenishing mechanism also includes a curved rotating shaft and a traction rod for driving the piston plate to reciprocate, the piston plate is fixedly connected to a pressing plate through the piston rod, the pressing plate is fixedly connected to a hinge seat, one end of the traction rod is hingedly mounted on the hinge seat, the other end of the traction rod is mounted on the curved rotating shaft through a sliding sleeve, the curved rotating shaft is rotatably mounted on one side of the box cover through a fixed plate, and an air guide hole is provided on the water replenishing tank.

[0016] As a further solution of the present invention, the water replenishing mechanism also includes a first gear and a second gear for driving the curved shaft to rotate, the curved shaft is rotatably connected to a fourth connecting shaft through a synchronous belt, the fourth connecting shaft is rotatably installed on one side of the box cover, the fourth connecting shaft is fixedly connected to the second gear, the second gear is meshed with the first gear, the first gear is fixedly installed on the third connecting shaft, and the diameter of the first gear is larger than that of the second gear.

[0017] As a further solution of the present invention, the water replenishing tank is fixedly connected to the water tank through a pumping pipe, a water injection one-way valve is provided on the water injection pipe, a water pumping one-way valve is provided on the pumping pipe, an installation shell is provided on the outside of the water tank, and a maintenance door is provided on the installation shell.

[0018] A method for using a proton exchange membrane water electrolysis hydrogen production device, the method comprising the following steps:

[0019] Step 1: The electric clamp holds and fixes a hydrogen storage bottle and an oxygen storage bottle, the output shaft of the driving motor drives the third connecting shaft on the fifth connecting shaft to rotate, the third connecting shaft drives the first sprocket on the first connecting shaft to rotate under the connection relationship of the bevel gear pair, and drives the chain to drive the electric clamp on the sliding plate to move to the work station under the transmission connection relationship of the second sprocket;

[0020] Step 2: The hydrogen storage bottle and the oxygen storage bottle held by the electric gripper are moved to the position directly above the airway pipe, and the electric push rod drives the airway pipe connected to the airway fixing frame and the limit frame to move upward, completing the docking of the airway pipe with the ends of the hydrogen storage bottle and the oxygen storage bottle, and the support and limit of the hydrogen storage bottle and the oxygen storage bottle by the limit frame;

[0021] Step 3: The cathode electrode column and the anode electrode column in the electrolysis box perform water electrolysis, and the proton exchange membrane on the connection frame performs proton exchange. The hydrogen generated by electrolysis at the cathode electrode column is collected and stored in the hydrogen storage bottle through the hydrogen outlet pipe, the elastic hose and the air guide pipe, and the oxygen generated by electrolysis at the anode electrode column is collected and stored in the oxygen storage bottle through the oxygen outlet pipe, the elastic hose and the air guide pipe;

[0022] Step 4: The driving motor drives the hydrogen storage bottle and the oxygen storage bottle held by the electric clamp to switch the workstations, and synchronously drives the eccentric wheel on the fifth connecting shaft to rotate. Under the connection relationship between the eccentric wheel and the spring, the scraper on the guide slide rod is driven to reciprocate and scrape the outside of the cathode electrode column and the anode electrode column, thereby completing the cleaning operation of the cathode electrode column and the anode electrode column;

[0023] Step 5: The driving motor drives the hydrogen storage bottle and the oxygen storage bottle clamped by the electric clamp to switch the workstations, and synchronously drives the first gear on the third connecting shaft to rotate. The first gear drives the fourth connecting shaft to rotate under the relationship of meshing connection with the second gear. The fourth connecting shaft drives the curved shaft to rotate under the synchronous drive of the synchronous belt. Under the curved rotation of the curved shaft and the connection relationship between the sliding sleeve and the traction rod, the piston plate on the piston rod is driven to reciprocate inside the water replenishment tank. Under the connection relationship between the water injection check valve on the water injection pipe and the water extraction check valve on the water extraction pipe, the water in the water tank is transported to the electrolytic box through the water replenishment tank for water replenishment operation.

[0024] In summary, compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0025] The gas storage and bottle exchange mechanism provided in the present invention can automatically realize the hydrogen bottle exchange and collection operation without manual intervention in bottle exchange and gas collection processing, which greatly reduces the need for manual operation, thereby reducing labor costs, while reducing downtime caused by human errors and improving the reliability of the overall operation.

[0026] The pole cleaning mechanism can clean the dirt and sediment on the pole surface while switching the gas collecting bottle to collect gas, maintain the efficient catalytic activity of the electrode, thereby increasing the output and purity of hydrogen, reducing manual participation, reducing labor costs and time costs, and reducing the frequency of electrode replacement, thereby correspondingly extending the service life of the equipment.

[0027] By setting up a water replenishment mechanism, when the gas collecting bottle completes gas collection and switches to the next workstation for gas collection, an appropriate amount of water replenishment operation will be carried out accordingly, thereby improving the continuous collection efficiency of hydrogen without manual intervention, thereby improving the overall operating efficiency. At the same time, it can avoid damage to the electrolyzer and other equipment caused by electrolyte drying up or excessive concentration, further extending the service life of the entire equipment and improving overall work efficiency.

[0028] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of an embodiment of the invention.

[0030] Figure 2 It is a side structural schematic diagram of an embodiment of the invention.

[0031] Figure 3 It is a schematic diagram of the top structure of an embodiment of the invention.

[0032] Figure 4 It is a schematic diagram of the connection structure of the sliding plate in an embodiment of the invention.

[0033] Figure 5 It is a schematic diagram of the connection structure inside the installation shell in an embodiment of the invention.

[0034] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of A.

[0035] Figure 7 It is a schematic diagram of the cross-sectional structure of the water replenishment tank connection in an embodiment of the invention.

[0036] Figure 8 for Figure 7 Schematic diagram of the enlarged structure of B.

[0037] Fig. 9 It is a schematic diagram of the cross-sectional structure inside the electrolytic box in an embodiment of the invention.

[0038] Fig.10 for Fig. 9 Schematic diagram of the enlarged structure of C in the figure.

[0039] Figure numerals: 1, bottom plate; 2, electrolytic box; 3, box cover; 4, installation shell; 5, maintenance door; 6, hydrogen storage bottle; 7, oxygen storage bottle; 8, first control valve; 9, first top plate; 10, fixed column; 11, second top plate; 12, first sprocket; 13, second sprocket; 14, first connecting shaft; 15, second connecting shaft; 16, chain; 17, sliding plate; 18, guide pulley; 19, electric clamp; 20, bevel gear pair; 21, third connecting shaft; 22, fixed plate; 23, first gear; 24, second gear; 25, fourth connecting shaft; 26, synchronous belt; 27, curved shaft; 28, sliding sleeve; 29, traction rod; 30, articulated seat; 31, pressing plate; 32, piston rod; 33. Water replenishment tank; 34. Air guide hole; 35. Piston plate; 36. Water pumping pipe; 37. Water pumping check valve; 38. Water tank; 39. Water injection pipe; 40. Water injection check valve; 41. Connecting water pipe; 42. Oxygen outlet pipe; 43. Hydrogen outlet pipe; 44. Second control valve; 45. Elastic hose; 46. Air pipe; 47. Air pipe fixing bracket; 48. Electric push rod; 49. Limit frame; 50. Connection frame; 51. Proton exchange membrane; 52. Cathode electrode column; 53. Anode electrode column; 54. Pole mounting seat; 55. Scraper; 56. Connecting rod; 57. Guide slide rod; 58. Lifting plate; 59. Spring; 60. Eccentric wheel; 61. Fifth connecting shaft; 62. Guide rail; 63. Drive motor. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. 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.

[0041] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0042] Example 1

[0043] See also Figures 1 to 9 A proton exchange membrane water electrolysis hydrogen production device and method, comprising a bottom plate 1, an electrolysis box 2 is arranged on the bottom plate 1, a box cover 3 is arranged on the electrolysis box 2, a proton exchange membrane 51 and a cathode electrode column 52 and an anode electrode column 53 for electrolyzing water are arranged in the electrolysis box 2, a hydrogen outlet pipe 43 is arranged on one side of the cathode electrode column 52, an oxygen outlet pipe 42 is arranged on one side of the anode electrode column 53, and the oxygen outlet pipe 42 and the hydrogen outlet pipe 43 are both connected to the inside of the electrolysis box 2, and also include:

[0044] The gas storage and bottle replacement mechanism is installed at the docking installation position of the oxygen outlet pipe 42 and the hydrogen outlet pipe 43, and is used to replace the hydrogen storage bottle 6 and the oxygen storage bottle 7 for docking storage, and the number of hydrogen storage bottles 6 and the number of oxygen storage bottles 7 are both several. The gas storage and bottle replacement mechanism includes a chain 16, a sliding plate 17 and an electric clamp 19 for driving the hydrogen storage bottle 6 and the oxygen storage bottle 7 to move and dock. The electric clamp 19 is fixedly installed on the sliding plate 17, and the sliding plate 17 is slidably connected to the guide rail 62 through a plurality of guide pulleys 18. The guide rail 62 is fixedly installed on the first top plate 9, the chain 16 is transmission connected to the first top plate 9, and the sliding plate 17 is installed on the chain 16.

[0045] Furthermore, the gas storage and bottle exchange mechanism also includes a first sprocket 12 and a second sprocket 13 for driving the hydrogen storage bottle 6 and the oxygen storage bottle 7 clamped by the electric clamp 19 to switch the work positions. The first sprocket 12 and the second sprocket 13 are both transmission-connected to the chain 16. The first sprocket 12 is rotationally connected to the first top plate 9 through the first connecting shaft 14, and the second sprocket 13 is rotationally connected to the first top plate 9 through the second connecting shaft 15. The first top plate 9 is fixedly installed on the box cover 3. The first connecting shaft 14 is rotationally connected to the third connecting shaft 21 through the bevel gear pair 20. The third connecting shaft 21 is rotationally installed inside the box cover 3 through the fifth connecting shaft 61. The fifth connecting shaft 61 is fixedly connected to the output shaft of the drive motor 63. The drive motor 63 is fixedly installed on the outside of the electrolytic box 2. The first top plate 9 is fixedly connected to the second top plate 11 through the fixing column 10.

[0046] Furthermore, the gas storage and bottle exchange mechanism also includes an electric push rod 48 and a limit frame 49 for limiting the docking of the hydrogen storage bottle 6 and the oxygen storage bottle 7. The limit frame 49 is fixedly connected to the air guide pipe 46 through the air pipe fixing frame 47. The air guide pipe 46 is fixedly connected to the hydrogen outlet pipe 43 and the oxygen outlet pipe 42 through the elastic hose 45. The hydrogen outlet pipe 43 and the oxygen outlet pipe 42 are both provided with a second control valve 44. The air pipe fixing frame 47 is fixedly connected to the output end of the electric push rod 48. The electric push rod 48 is fixedly installed on the outside of the electrolytic box 2, and the hydrogen storage bottle 6 and the oxygen storage bottle 7 are both provided with a first control valve 8.

[0047] Preferably, when performing the electrolysis of water processing, the hydrogen storage bottle 6 and the oxygen storage bottle 7 can be clamped and fixed on the electric clamp 19 in advance. Whenever it is necessary to switch the next storage bottle for gas collection operation, the output shaft of the drive motor 63 drives the third connecting shaft 21 on the fifth connecting shaft 61 to rotate. The third connecting shaft 21 drives the first sprocket 12 on the first connecting shaft 14 to rotate under the connection relationship of the bevel gear pair 20, and then drives the chain 16 to drive the electric clamp 19 on the sliding plate 17 to move the work station under the synchronous transmission connection relationship of the second sprocket 13, thereby completing the switching and docking movement of the hydrogen storage bottle 6 and the oxygen storage bottle 7 work stations.

[0048] Whenever the hydrogen storage bottle 6 and the oxygen storage bottle 7 switch workstations, the electric push rod 48 drives the limit frame 49 and the air duct 46 to descend to the lowest position in advance, so as to facilitate the docking and installation of the subsequent workstations, that is, when the hydrogen storage bottle 6 and the oxygen storage bottle 7 clamped by the electric clamp 19 of the next workstation move to the position directly above the air duct 46, the electric push rod 48 drives the air duct 46 connected to the air duct fixing frame 47 and the limit frame 49 to move upward, completing the docking of the air duct 46 with the ends of the hydrogen storage bottle 6 and the oxygen storage bottle 7, and the support and limitation of the hydrogen storage bottle 6 and the oxygen storage bottle 7 by the limit frame 49. At this time, the second control valve 44 on the oxygen outlet pipe 42 and the hydrogen outlet pipe 43 and the first control valve 8 on the docked hydrogen storage bottle 6 and the oxygen storage bottle 7 are opened, which is convenient for the corresponding gas collection operation, and no manual intervention is required in bottle replacement and gas collection processing, which significantly improves work efficiency.

[0049] The cathode electrode column 52 and the anode electrode column 53 in the electrolysis box 2 perform water electrolysis processing operations, and the proton exchange membrane 51 on the connecting frame 50 performs proton exchange. The hydrogen generated by electrolysis at the cathode electrode column 52 is sequentially delivered from the hydrogen outlet pipe 43, the elastic hose 45 and the air duct 46 to the hydrogen storage bottle 6 for collection and storage. The oxygen generated by electrolysis at the anode electrode column 53 is sequentially delivered from the oxygen outlet pipe 42, the elastic hose 45 and the air duct 46 to the oxygen storage bottle 7 for collection and storage. Oxygen and hydrogen can be collected synchronously with high work efficiency.

[0050] This method of automatically switching the hydrogen storage bottle 6 and the oxygen storage bottle 7 to perform hydrogen and oxygen collection operations greatly reduces the need for manual operation, thereby reducing labor costs, while reducing downtime caused by human errors and improving the reliability of overall operation.

[0051] Example 2

[0052] like Figures 1 to 10 As shown, based on Example 1, this embodiment further includes a pole cleaning mechanism, which is installed at the outer connection of the cathode electrode column 52 and the anode electrode column 53, and is synchronously driven by the gas storage and bottle exchange mechanism to clean the dirt on the cathode electrode column 52 and the anode electrode column 53. The pole cleaning mechanism includes a scraper 55, a guide slide 57 and a lifting plate 58 for reciprocating cleaning. The scraper 55 is fixedly installed on the lifting plate 58 through the guide slide 57, and the guide slide 57 is limitedly slidably connected to the electrolytic box 2, and the scraper 55 is fixedly connected through the connecting rod 56.

[0053] Furthermore, the pole cleaning mechanism also includes an eccentric wheel 60 for driving the scraper 55 to move back and forth for cleaning. The eccentric wheel 60 is rotatably installed inside the box cover 3 through a fifth connecting shaft 61, and the eccentric wheel 60 is rotatably installed on one side of the lifting plate 58. A plurality of springs 59 are provided at the connection between the lifting plate 58 and the electrolytic box 2.

[0054] Furthermore, the cathode electrode column 52 and the anode electrode column 53 are both installed inside the electrolytic box 2 through the electrode column mounting seat 54 , and the proton exchange membrane 51 is fixedly installed inside the electrolytic box 2 through the connection frame 50 .

[0055] Preferably, in the present embodiment, the driving motor 63 drives the hydrogen storage bottle 6 and the oxygen storage bottle 7 clamped by the electric clamp 19 to switch the workstations, and at the same time, the eccentric wheel 60 on the fifth connecting shaft 61 is synchronously driven to rotate. Under the eccentricity of the eccentric wheel 60 and the elastic connection relationship of the spring 59, the scraper 55 on the guide slide bar 57 is driven to move back and forth to scrape the outer sides of the cathode electrode column 52 and the anode electrode column 53, thereby completing the cleaning operation of the cathode electrode column 52 and the anode electrode column 53, thereby reducing the adsorption of by-products and the adhesion of scale, and greatly improving the working efficiency of hydrogen production by electrolysis of water.

[0056] This method of regular and automatic cleaning of the electrode columns can effectively remove dirt and sediment on the surface of the electrode columns and maintain the efficient catalytic activity of the electrodes, thereby increasing the production and purity of hydrogen, reducing manual participation, reducing labor costs and time costs, while reducing the frequency of electrode replacement and correspondingly extending the service life of the equipment, further reducing long-term operating costs and maintenance costs.

[0057] Example 3

[0058] like Figures 1 to 9 As shown, based on the above-mentioned embodiments, this embodiment further includes a water replenishment mechanism, which is installed on one side of the electrolytic box 2 and is synchronously driven by the gas storage and bottle exchange mechanism to perform synchronous water replenishment operations in the electrolytic box 2. The water replenishment mechanism includes a water replenishment box 33 and a water tank 38 for water replenishment connection. The water replenishment box 33 is provided with a piston plate 35 for reciprocating water pumping and conveying connection, and the water replenishment box 33 is connected to the interior of the electrolytic box 2 through a water injection pipe 39 and a connecting water conduit 41.

[0059] Furthermore, the water replenishing mechanism also includes a curved shaft 27 and a traction rod 29 connected to drive the piston plate 35 to reciprocate. The piston plate 35 is fixedly connected to a pressing plate 31 through a piston rod 32. A hinge seat 30 is fixedly connected to the pressing plate 31. One end of the traction rod 29 is hingedly mounted on the hinge seat 30. The other end of the traction rod 29 is sleeved and mounted on the curved shaft 27 through a sliding sleeve 28. The curved shaft 27 is rotatably mounted on one side of the box cover 3 through a fixed plate 22. An air guide hole 34 is provided on the water replenishing box 33.

[0060] Furthermore, the water replenishing mechanism also includes a first gear 23 and a second gear 24 for driving the curved rotating shaft 27 to rotate. The curved rotating shaft 27 is rotatably connected to a fourth connecting shaft 25 through a synchronous belt 26. The fourth connecting shaft 25 is rotatably installed on one side of the box cover 3. The fourth connecting shaft 25 is fixedly connected to the second gear 24. The second gear 24 is meshed with the first gear 23. The first gear 23 is fixedly installed on the third connecting shaft 21. The diameter of the first gear 23 is larger than that of the second gear 24.

[0061] Furthermore, the water replenishment tank 33 is fixedly connected to a water tank 38 via a water pumping pipe 36, a water injection check valve 40 is provided on the water injection pipe 39, a water pumping check valve 37 is provided on the water pumping pipe 36, an installation shell 4 is provided on the outer side of the water tank 38, and a maintenance door 5 is provided on the installation shell 4.

[0062] Preferably, in the present embodiment, the driving motor 63 drives the hydrogen storage bottle 6 and the oxygen storage bottle 7 clamped by the electric clamp 19 to switch the workstations, and synchronously drives the first gear 23 on the third connecting shaft 21 to rotate. The first gear 23 drives the fourth connecting shaft 25 to rotate in a meshing connection with the second gear 24. Since the diameter of the first gear 23 is larger than that of the second gear 24, the fourth connecting shaft 25 drives the curved shaft 27 to rotate more quickly under the synchronous drive of the synchronous belt 26. Under the curved rotation of the curved shaft 27 and the connection relationship between the sliding sleeve 28 and the traction rod 29, the piston plate 35 on the piston rod 32 is driven to reciprocate inside the water replenishment tank 33. Under the connection relationship between the water injection check valve 40 on the water injection pipe 39 and the water extraction check valve 37 on the water extraction pipe 36, the water in the water tank 38 is transferred to the electrolytic box 2 via the water replenishment tank 33 for water replenishment operation.

[0063] That is, every time the gas collecting bottle completes gas collection and switches to the next workstation for gas collection, an appropriate amount of water replenishment operation will be carried out accordingly, which improves the continuous collection efficiency of hydrogen without the need for human intervention, thereby improving the overall operating efficiency. At the same time, it can avoid damage to the electrolyzer and other equipment caused by electrolyte drying up or excessive concentration, further extending the service life of the entire equipment and improving overall work efficiency.

[0064] It should be particularly noted that both the fourth connecting shaft 25 and the curved rotating shaft 27 are provided with pulleys which are synchronously connected with the synchronous belt 26 .

[0065] A method for using a proton exchange membrane water electrolysis hydrogen production device comprises the following steps:

[0066] Step 1: The hydrogen storage bottle 6 and the oxygen storage bottle 7 are clamped and fixed on the electric clamp 19, and the output shaft of the driving motor 63 drives the third connecting shaft 21 on the fifth connecting shaft 61 to rotate. The third connecting shaft 21 drives the first sprocket 12 on the first connecting shaft 14 to rotate under the connection relationship of the bevel gear pair 20, and drives the chain 16 to drive the electric clamp 19 on the sliding plate 17 to move to the work station under the transmission connection relationship of the second sprocket 13;

[0067] Step 2: The hydrogen storage bottle 6 and the oxygen storage bottle 7 held by the electric clamp 19 are moved to the position directly above the air pipe 46, and the electric push rod 48 drives the air pipe 46 connected to the air pipe fixing frame 47 and the limit frame 49 to move upward, completing the docking of the air pipe 46 with the ends of the hydrogen storage bottle 6 and the oxygen storage bottle 7, and the support and limit of the hydrogen storage bottle 6 and the oxygen storage bottle 7 by the limit frame 49;

[0068] Step 3: The cathode electrode column 52 and the anode electrode column 53 in the electrolysis box 2 perform water electrolysis, and the proton exchange membrane 51 on the connection frame 50 performs proton exchange. The hydrogen generated by electrolysis at the cathode electrode column 52 sequentially passes through the hydrogen outlet pipe 43, the elastic hose 45 and the air guide pipe 46 to the hydrogen storage bottle 6 for collection and storage, and the oxygen generated by electrolysis at the anode electrode column 53 sequentially passes through the oxygen outlet pipe 42, the elastic hose 45 and the air guide pipe 46 to the oxygen storage bottle 7 for collection and storage;

[0069] Step 4: The driving motor 63 drives the hydrogen storage bottle 6 and the oxygen storage bottle 7 held by the electric clamp 19 to switch positions, and synchronously drives the eccentric wheel 60 on the fifth connecting shaft 61 to rotate. Under the eccentricity of the eccentric wheel 60 and the connection relationship of the spring 59, the scraper 55 on the guide slide bar 57 is driven to reciprocate and scrape the outer sides of the cathode electrode column 52 and the anode electrode column 53, thereby completing the cleaning operation of the cathode electrode column 52 and the anode electrode column 53;

[0070] Step 5: The driving motor 63 drives the hydrogen storage bottle 6 and the oxygen storage bottle 7 clamped by the electric clamp 19 to switch the workstations, and synchronously drives the first gear 23 on the third connecting shaft 21 to rotate. The first gear 23 drives the fourth connecting shaft 25 to rotate under the relationship of meshing connection with the second gear 24. The fourth connecting shaft 25 drives the curved shaft 27 to rotate under the synchronous drive of the synchronous belt 26. Under the curved rotation of the curved shaft 27 and the connection relationship between the sliding sleeve 28 and the traction rod 29, the piston plate 35 on the piston rod 32 is driven to reciprocate inside the water replenishment tank 33. Under the connection relationship between the water injection check valve 40 on the water injection pipe 39 and the water extraction check valve 37 on the water extraction pipe 36, the water in the water tank 38 is transported by the water replenishment tank 33 to the electrolytic box 2 for water replenishment operation.

[0071] It should be particularly noted that the components in this application are all universal standard parts or components well known to those skilled in the art, which effectively solve the technical problems raised in the background technology.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A proton exchange membrane water electrolysis hydrogen production device, comprising a bottom plate (1), characterized in that: An electrolysis box (2) is arranged on the bottom plate (1), and a box cover (3) is arranged on the electrolysis box (2). A proton exchange membrane (51) and a cathode electrode column (52) and an anode electrode column (53) for electrolyzing water are arranged in the electrolysis box (2). A hydrogen outlet pipe (43) is arranged on one side of the cathode electrode column (52), and an oxygen outlet pipe (42) is arranged on one side of the anode electrode column (53). Both the oxygen outlet pipe (42) and the hydrogen outlet pipe (43) are connected to the inside of the electrolysis box (2). The electrolysis box (2) further comprises: A gas storage and bottle exchange mechanism, which is installed at the docking installation position of the oxygen outlet pipe (42) and the hydrogen outlet pipe (43), and is used to replace the hydrogen storage bottle (6) and the oxygen storage bottle (7) for docking storage, and the number of the hydrogen storage bottle (6) and the oxygen storage bottle (7) are both several. The gas storage and bottle exchange mechanism comprises a chain (16) for driving the hydrogen storage bottle (6) and the oxygen storage bottle (7) to move and dock, a sliding plate (17) and an electric clamp (19), the electric clamp (19) is fixedly installed on the sliding plate (17), the sliding plate (17) is slidably connected to the guide rail (62) through a plurality of guide pulleys (18), the guide rail (62) is fixedly installed on the first top plate (9), the chain (16) is transmission-connected to the first top plate (9), and the sliding plate (17) is installed on the chain (16); A pole cleaning mechanism is installed at the outer connection of the cathode electrode column (52) and the anode electrode column (53), and is synchronously driven by the gas storage and bottle exchange mechanism to clean the dirt on the cathode electrode column (52) and the anode electrode column (53). The pole cleaning mechanism comprises a scraper (55) for reciprocating cleaning, a guide slide bar (57) and a lifting plate (58). The scraper (55) is fixedly installed on the lifting plate (58) through the guide slide bar (57), and the guide slide bar (57) is limitedly slidably connected to the electrolytic box (2). The scraper (55) is fixedly connected through a connecting rod (56); A water replenishment mechanism is installed on one side of the electrolytic box (2) and is synchronously driven by the gas storage and bottle exchange mechanism to synchronously replenish water in the electrolytic box (2). The water replenishment mechanism includes a water replenishment box (33) and a water tank (38) for water replenishment connection. A piston plate (35) for reciprocating water pumping and conveying connection is arranged in the water replenishment box (33), and the water replenishment box (33) is connected to the inside of the electrolytic box (2) through a water injection pipe (39) and a connecting water conduit (41).

2. The proton exchange membrane water electrolysis hydrogen production device according to claim 1, characterized in that: The gas storage and bottle exchange mechanism also includes a first sprocket (12) and a second sprocket (13) for driving the hydrogen storage bottle (6) and the oxygen storage bottle (7) clamped by the electric clamp (19) to switch the workstations. The first sprocket (12) and the second sprocket (13) are both transmission-connected to the chain (16). The first sprocket (12) is rotationally connected to the first top plate (9) via a first connecting shaft (14). The second sprocket (13) is rotationally connected to the first top plate (9) via a second connecting shaft (15). A top plate (9) is fixedly mounted on the box cover (3); the first connecting shaft (14) is rotatably connected to the third connecting shaft (21) via a bevel gear pair (20); the third connecting shaft (21) is rotatably mounted inside the box cover (3) via a fifth connecting shaft (61); the fifth connecting shaft (61) is fixedly connected to the output shaft of a drive motor (63); the drive motor (63) is fixedly mounted on the outside of the electrolytic box (2); the first top plate (9) is fixedly connected to the second top plate (11) via a fixing column (10).

3. The proton exchange membrane water electrolysis hydrogen production device according to claim 2, characterized in that: The gas storage and bottle exchange mechanism further comprises an electric push rod (48) and a limit frame (49) for limiting the docking of the hydrogen storage bottle (6) and the oxygen storage bottle (7); the limit frame (49) is fixedly connected to an air guide pipe (46) through an air pipe fixing frame (47); the air guide pipe (46) is fixedly connected to a hydrogen outlet pipe (43) and an oxygen outlet pipe (42) through an elastic hose (45); a second control valve (44) is provided on each of the hydrogen outlet pipe (43) and the oxygen outlet pipe (42); the air pipe fixing frame (47) is fixedly connected to the output end of the electric push rod (48); the electric push rod (48) is fixedly installed on the outside of the electrolytic box (2); and a first control valve (8) is provided on each of the hydrogen storage bottle (6) and the oxygen storage bottle (7).

4. The proton exchange membrane water electrolysis hydrogen production device according to claim 2, characterized in that: The pole cleaning mechanism also includes an eccentric wheel (60) for driving the scraper (55) to move back and forth for cleaning. The eccentric wheel (60) is rotatably mounted inside the box cover (3) via a fifth connecting shaft (61), and the eccentric wheel (60) is rotatably mounted on one side of the lifting plate (58). A plurality of springs (59) are provided at the connection between the lifting plate (58) and the electrolytic box (2).

5. The proton exchange membrane water electrolysis hydrogen production device according to claim 4, characterized in that: The cathode electrode column (52) and the anode electrode column (53) are both installed inside the electrolysis box (2) via a column mounting seat (54), and the proton exchange membrane (51) is fixedly installed inside the electrolysis box (2) via a connection frame (50).

6. The proton exchange membrane water electrolysis hydrogen production device according to claim 2, characterized in that: The water replenishing mechanism also includes a curved rotating shaft (27) and a traction rod (29) connected for driving the piston plate (35) to move back and forth. The piston plate (35) is fixedly connected to a pressing plate (31) through a piston rod (32). The pressing plate (31) is fixedly connected to a hinge seat (30). One end of the traction rod (29) is hingedly mounted on the hinge seat (30). The other end of the traction rod (29) is sleeved and mounted on the curved rotating shaft (27) through a sliding sleeve (28). The curved rotating shaft (27) is rotatably mounted on one side of the box cover (3) through a fixed plate (22). An air guide hole (34) is provided on the water replenishing box (33).

7. The proton exchange membrane water electrolysis hydrogen production device according to claim 6, characterized in that: The water replenishing mechanism also includes a first gear (23) and a second gear (24) for driving the curved rotating shaft (27) to rotate; the curved rotating shaft (27) is rotatably connected to a fourth connecting shaft (25) via a synchronous belt (26); the fourth connecting shaft (25) is rotatably mounted on one side of the box cover (3); the fourth connecting shaft (25) is fixedly connected to the second gear (24); the second gear (24) is meshingly connected to the first gear (23); the first gear (23) is fixedly mounted on the third connecting shaft (21); and the diameter of the first gear (23) is larger than that of the second gear (24).

8. The proton exchange membrane water electrolysis hydrogen production device according to claim 7, characterized in that: The water replenishment tank (33) is fixedly connected to a water tank (38) via a water extraction pipe (36); a water injection check valve (40) is provided on the water injection pipe (39); a water extraction check valve (37) is provided on the water extraction pipe (36); a mounting shell (4) is provided on the outer side of the water tank (38); and a maintenance door (5) is provided on the mounting shell (4).

9. A method for using a proton exchange membrane water electrolysis hydrogen production device, applied to the proton exchange membrane water electrolysis hydrogen production device as claimed in any one of claims 1 to 8, characterized in that: The method for using the proton exchange membrane water electrolysis hydrogen production device comprises the following steps: Step 1: The hydrogen storage bottle (6) and the oxygen storage bottle (7) are clamped and fixed on the electric clamp (19), and the output shaft of the driving motor (63) drives the third connecting shaft (21) on the fifth connecting shaft (61) to rotate. The third connecting shaft (21) drives the first sprocket (12) on the first connecting shaft (14) to rotate under the connection relationship of the bevel gear pair (20), and drives the chain (16) to drive the electric clamp (19) on the sliding plate (17) to move the workstation under the transmission connection relationship of the second sprocket (13); Step 2: The hydrogen storage bottle (6) and the oxygen storage bottle (7) held by the electric clamp (19) are moved to the position directly above the air pipe (46), and the electric push rod (48) drives the air pipe (46) connected to the air pipe fixing frame (47) and the limit frame (49) to move upward, completing the docking of the air pipe (46) with the ends of the hydrogen storage bottle (6) and the oxygen storage bottle (7), and the support and limit of the limit frame (49) on the hydrogen storage bottle (6) and the oxygen storage bottle (7); Step 3: The cathode electrode column (52) and the anode electrode column (53) in the electrolysis box (2) perform water electrolysis, and the proton exchange membrane (51) on the connection frame (50) performs proton exchange. The hydrogen generated by electrolysis at the cathode electrode column (52) sequentially flows from the hydrogen outlet pipe (43), the elastic hose (45) and the air guide pipe (46) to the hydrogen storage bottle (6) for collection and storage. The oxygen generated by electrolysis at the anode electrode column (53) sequentially flows from the oxygen outlet pipe (42), the elastic hose (45) and the air guide pipe (46) to the oxygen storage bottle (7) for collection and storage. Step 4: The driving motor (63) drives the hydrogen storage bottle (6) and the oxygen storage bottle (7) clamped by the electric clamp (19) to switch the workstations, and synchronously drives the eccentric wheel (60) on the fifth connecting shaft (61) to rotate. Under the connection relationship between the eccentric wheel (60) and the spring (59), the scraper (55) on the guide slide bar (57) is driven to move back and forth to scrape the outer sides of the cathode electrode column (52) and the anode electrode column (53), thereby completing the cleaning operation of the cathode electrode column (52) and the anode electrode column (53); Step 5: The driving motor (63) drives the hydrogen storage bottle (6) and the oxygen storage bottle (7) held by the electric clamp (19) to switch positions, and synchronously drives the first gear (23) on the third connecting shaft (21) to rotate. The first gear (23) drives the fourth connecting shaft (25) to rotate under the relationship of meshing connection with the second gear (24). The fourth connecting shaft (25) drives the curved rotating shaft (27) to rotate under the synchronous drive of the synchronous belt (26). The curved rotation of the curved shaft (27) and the connection between the sliding sleeve (28) and the traction rod (29) drive the piston plate (35) on the piston rod (32) to reciprocate inside the water supply tank (33). Under the connection between the water injection check valve (40) on the water injection pipe (39) and the water extraction check valve (37) on the water extraction pipe (36), the water in the water tank (38) is transferred to the electrolytic box (2) through the water supply tank (33) to perform water replenishment operation.

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