Alkaline electrolytic water hydrogen production diaphragm and electrolytic cell thereof

Abstract

The electrolytic bath comprises two supporting end plates and further comprises a plurality of electrolytic frames, the electrolytic frames are evenly arranged between the two supporting end plates, thin sealing gaskets are arranged at the two ends of each electrolytic frame, and the thin sealing gaskets are arranged between the two supporting end plates. A cathode plate or an anode plate, a thick sealing gasket and a diaphragm assembly are sequentially arranged between the thin sealing gaskets of every two adjacent electrolysis frames from back to front, and the cathode plates and the anode plates are sequentially aligned and staggered from back to front; the two supporting end plates are connected through a plurality of pressing screw rods, and the distance between the two supporting end plates is shortened through the pressing screw rods, so that the electrolysis frames are pressed and sealed with one another; and meanwhile, thin sealing gaskets or thick sealing gaskets are arranged between the electrolysis frames and between the electrolysis frames and the supporting end plates, so that the electrolysis frames and the electrolysis frames as well as between the electrolysis frames and the supporting end plates can be effectively sealed, and the problem of liquid leakage or gas leakage is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen production by electrolyzing water, and specifically to an alkaline electrolyzed water hydrogen production diaphragm and its electrolytic cell. Background Technique

[0002] The principle of alkaline electrolyzed water hydrogen production is that under the action of direct current, water molecules undergo reduction reaction and oxidation reaction at the cathode and anode of the electrolytic cell respectively to generate hydrogen and oxygen. Traditional alkaline electrolyzed water hydrogen production electrolytic cells usually consist of a cathode, an anode, a diaphragm, an electrolyte, and an electrolytic cell body, etc.

[0003] For example, the invention patent with the patent number CN202111149631.6 discloses an electrolytic cell integrated structure based on an alkaline electrolyzed water hydrogen production process, including an electrolytic cell body, a first plate sheet, a second plate sheet, and a diaphragm. A square column is fixedly connected to the inner side wall of the electrolytic cell body. A guiding chute is axially opened at the top of the square column. The side walls of the first plate sheet or the second plate sheet are slidably clamped with the guiding chute. A wiring groove is opened at the top of the square column. An electrode conductive contact is connected to the side wall of the guiding chute. The electrode conductive contact is electrically connected to the wiring groove. The first plate sheet or the second plate sheet is electrically connected to the electrode conductive contact; the first plate sheet or the second plate sheet is clamped and fixed with the square column via the guiding chute. The external cable is fixed via the wiring groove and is electrically connected to the electrode conductive contact. The first plate sheet or the second plate sheet abuts and fits with the electrode conductive contact in the guiding chute. The first plate sheet or the second plate sheet is normally powered and operates. The first plate sheet or the second plate sheet is convenient to disassemble and assemble.

[0004] The electrolytic cell integrated structure based on the alkaline electrolyzed water hydrogen production process provided by the above patent has poor sealing effect, is not convenient for collecting the electrolyzed gas, is not conducive to separating and diverting oxygen and hydrogen, and at the same time, the overall electrolytic cell cannot be extended or shortened according to the use requirements, and the applicability of use is poor. Summary of the Invention

[0005] The purpose of the present invention is to provide an alkaline electrolyzed water hydrogen production diaphragm and its electrolytic cell, aiming to improve the problems of poor sealing effect of the existing electrolytic cell, inconvenience in collecting the electrolyzed gas, unfavorable separation and diversion of oxygen and hydrogen, and at the same time, the overall electrolytic cell cannot be extended or shortened according to the use requirements, and the applicability of use is poor.

[0006] The present invention is implemented as follows:

[0007] In a first aspect, an alkaline electrolyzed water hydrogen production diaphragm, the alkaline electrolyzed water hydrogen production diaphragm includes a mounting frame, a pressing ring, fixing bolts and a diaphragm body, the diaphragm body is attached to the inner side of the mounting frame, the pressing ring is pressed against the diaphragm body, and the fixing bolts connect the pressing ring and the mounting frame; by pressing the diaphragm body with the pressing ring, it ensures the stable connection between the diaphragm body and the mounting frame, and at the same time facilitates the replacement of the diaphragm body.

[0008] Preferably, a pressing groove is provided on the inner side of one end of the mounting frame, a plurality of limiting posts are evenly provided inside the pressing groove, a connecting groove is provided in the middle of the limiting posts, the edge of the diaphragm body is sleeved on the limiting posts, a counterbore is provided at the position of the pressing ring aligned with the connecting groove, the pressing ring is pressed into the pressing groove, and the fixing bolt passes through the counterbore and is threadedly connected to the connecting groove; a surface coating is applied to the surface of the diaphragm body, and the surface coating contains zirconia and polymer.

[0009] In a second aspect, the present invention provides an electrolytic cell containing the above alkaline electrolyzed water hydrogen production diaphragm, the electrolytic cell includes two support end plates, and further includes a plurality of electrolytic frames, a plurality of electrolytic frames are evenly provided between the two support end plates, thin gaskets are provided at both ends of the electrolytic frames, and between the thin gaskets of two adjacent electrolytic frames, a cathode plate or an anode plate, a thick gasket and a diaphragm assembly are sequentially provided from back to front, and the cathode plates and anode plates are aligned and staggered in sequence from back to front; the two support end plates are connected by a plurality of pressing screws, and by shortening the distance between the two support end plates with the plurality of pressing screws, the plurality of electrolytic frames are mutually pressed and sealed; a electrolyte delivery pipe is connected to the bottom of the two support end plates, and the electrolyte delivery pipe is respectively connected to the bottom ends of the plurality of electrolytic frames; oxygen drainage pipes and hydrogen drainage pipes are respectively provided directly above the plurality of electrolytic frames, the oxygen drainage pipe is connected to the top ends of the electrolytic frames corresponding to all anode plates, and the hydrogen drainage pipe 11 is connected to the top ends of the electrolytic frames corresponding to all cathode plates.

[0010] Preferably, a plurality of connection holes are evenly provided at the position of the support end plate near the edge for the pressing screws to pass through the support end plate; a mounting hole is provided at the bottom of the support end plate, and the mounting hole is used for mounting the electrolyte delivery pipe; a bottom plate is provided at the bottom end of the support end plate, and a plurality of bolt holes are evenly provided on the bottom plate.

[0011] Preferably, connection heads are provided at both the top end and the bottom end of the electrolytic frame, a circulation hole is provided in the middle of the connection head and is communicated with the inside of the electrolytic frame, and the connection head at the top of the electrolytic frame is used to be connected to the oxygen drainage pipe or the hydrogen drainage pipe, and the connection head at the bottom of the electrolytic frame is used to be connected to the electrolyte delivery pipe.

[0012] Preferably, the cathode plates and the anode plates have the same structure, the cathode plates and the anode plates are made of copper, connection feet are provided on the sides of the cathode plates and the anode plates, and connection ports are provided in the middle of the connection feet;

[0013] The reaction formula at the cathode plate is: 2H2O + 2e - →H2 + 2OH - ; The reaction formula at the anode plate is: 2OH - →1 / 2O2 + H2O + 2e - ;

[0014] The effective reaction areas of the cathode plate and the anode plate are S c and S a , the current density is J, the cell voltage is V, and the electrolysis temperature is T; the cell voltage V is expressed as: V = E e q + η c + η a + IR; where, E eq is the theoretical decomposition voltage, η c is the cathode overpotential, η a is the anode overpotential, I is the current, and R is the internal resistance of the electrolytic cell;

[0015] The electrolysis efficiency η e ff at the cathode plate or the anode plate is expressed as: where, n HO is the number of moles of hydrogen or oxygen generated, F is the Faraday constant, is the molar volume of hydrogen, and t is the electrolysis time.

[0016] Preferably, connecting screws are provided at both ends of the pressing screw. The connecting screws pass through the connecting holes, and a pressing cap is provided at one end of the connecting screw passing through the connecting hole. The pressing cap presses against the supporting end plate.

[0017] Preferably, a row of shunt pipes is provided on the side of the electrolyte delivery pipe. First adapter caps are provided at the tops of the shunt pipes. The first adapter caps are connected to the connection heads at the bottom ends of the electrolysis frames; threaded connection pipes are provided at both ends of the electrolyte delivery pipe.

[0018] Preferably, the oxygen diversion pipe and the hydrogen diversion pipe have the same structure. A row of diversion pipes is provided on the side of each of the oxygen diversion pipe and the hydrogen diversion pipe. Second adapter caps are provided at the bottom ends of the diversion pipes. The second adapter caps are connected to the connection heads at the top of the electrolysis frame.

[0019] Preferably, it further includes terminal posts. There are two terminal posts. One terminal post is connected to the connection feet of multiple anode plates at the same time, and the other terminal post is connected to the connection feet of multiple cathode plates at the same time. Both ends of the terminal post are provided with limiting end plates, and multiple compression nuts are arranged on the terminal post. The compression nuts are used to press on the connection feet to achieve the purpose of fixing the terminal post. A wiring frame is arranged on the side of the terminal post. An ear plate is arranged at the bottom end of the wiring frame, and a wire passing hole is arranged in the middle of the ear plate. The ear plate and the wire passing hole are used to cooperate with the positive or negative pole of the DC power supply.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. In the present invention, multiple electrolysis frames are installed between two support end plates. The electrolysis frames are used to store electrolytic solution. The electrolytic solution is electrolyzed by energizing the anode plates or cathode plates. In this way, only oxygen or hydrogen is generated inside each electrolysis frame, which is convenient for centralized drainage of oxygen and hydrogen. At the same time, thin gaskets or thick gaskets are arranged between the electrolysis frames and between the electrolysis frames and the support end plates. In this way, effective sealing can be achieved between the electrolysis frames and between the electrolysis frames and the support end plates, avoiding problems such as liquid leakage or gas leakage.

[0022] 2. In the present invention, the entire electrolytic cell can be quickly disassembled by removing the compression screw, which is convenient for the maintenance of the electrolytic cell and also convenient for replacing the components of the corresponding electrolytic cell according to the usage requirements.

[0023] 3. Terminal posts are installed on both the anode plates and cathode plates of the present invention, which is convenient for the anode plates and cathode plates to be connected to the DC power supply at the same time, thus facilitating the stable electrolysis of water to produce hydrogen. Description of the Drawings

[0024] Figure 1 is the overall structural schematic diagram of the present invention;

[0025] Figure 2 is the structural schematic diagram of the support end plate of the present invention;

[0026] Figure 3 is the structural schematic diagram of the electrolysis frame of the present invention;

[0027] Figure 4 is the structural schematic diagram of the cathode plate of the present invention;

[0028] Figure 5 is the structural schematic diagram of the diaphragm assembly of the present invention;

[0029] Figure 6 is the structural schematic diagram of the installation frame of the present invention;

[0030] Figure 7 is the structural schematic diagram of the pressing ring of the present invention;

[0031] Figure 8 is a schematic diagram of the layered structure of the diaphragm body of the present invention;

[0032] Figure 9 is a schematic diagram of the structure of the compression screw of the present invention;

[0033] Figure 10 is a schematic diagram of the structure of the electrolyte delivery pipe of the present invention;

[0034] Figure 11 is a schematic diagram of the structure of the oxygen drainage pipe of the present invention;

[0035] Figure 12 is a schematic diagram of the structure of the terminal of the present invention.

[0036] In the figure: 1, support end plate; 110, connection hole; 120, mounting hole; 130, bottom plate; 140, bolt hole; 2, electrolytic cell; 21, connector; 22, flow hole; 3, thin gasket; 4, cathode plate; 41, connection leg; 42, connection port; 5, thick gasket; 6, diaphragm assembly; 61, mounting frame; 611, pressure groove; 612, limit post; 613, connection groove; 62, pressure ring; 621, counterbore; 63, fixing bolt; 64, diaphragm body; 641, surface coating; 7, anode plate; 8, compression screw; 81, connection screw; 82, compression cap; 9, electrolyte delivery pipe; 91, shunt pipe; 92, first adapter cap; 93, threaded connection pipe; 10, oxygen drainage pipe; 101, guide pipe; 102, second adapter cap; 11, hydrogen drainage pipe; 12, terminal; 121, compression nut; 122, limit end plate; 123, connection frame; 124, ear plate; 125, wire passing hole. Detailed implementation manners

[0037] In the present invention, unless otherwise clearly defined and limited, the terms "install", "connect", "couple", "fix" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0038] The following will be further described in conjunction with the accompanying drawings and specific embodiments:

[0039] Embodiment 1

[0040] As Figure 1As shown in the figure, an electrolytic cell containing an alkaline electrolyzed water hydrogen production diaphragm includes two support end plates 1, and also includes a plurality of electrolytic frames 2. A plurality of electrolytic frames 2 are evenly arranged between the two support end plates 1. The support end plates 1 are used to support the entire electrolytic cell. At the same time, the support end plates 1 can also clamp and fix the plurality of electrolytic frames 2 to ensure effective sealing between the electrolytic frames 2. Thin gaskets 3 are provided at both ends of the electrolytic frame 2, and between the thin gaskets 3 of two adjacent electrolytic frames 2, a cathode plate 4 or an anode plate 7, a thick gasket 5, and a diaphragm assembly 6 are sequentially arranged from back to front. The cathode plate 4 and the anode plate 7 are sequentially aligned and staggered from back to front; this structure facilitates pressing and fixing each component of the electrolytic cell by shrinking the distance between the two support end plates 1, ensuring good sealing of the entire electrolytic cell, and at the same time enabling close cooperation between the components of the electrolytic cell. The two support end plates 1 are connected by a plurality of compression screws 8. By shortening the distance between the two support end plates 1 through the plurality of compression screws 8, the plurality of electrolytic frames 2 are pressed and sealed with each other; the bottom of the two support end plates 1 is connected with an electrolyte delivery pipe 9, and the electrolyte delivery pipe 9 is respectively connected to the bottom ends of the plurality of electrolytic frames 2; the electrolyte delivery pipe 9 is used to deliver electrolyte to the inside of each electrode frame. Oxygen drainage pipes 10 and hydrogen drainage pipes 11 are respectively provided directly above the plurality of electrolytic frames 2. The oxygen drainage pipe 10 is connected to the top ends of the electrolytic frames 2 corresponding to all the anode plates 7, and the hydrogen drainage pipe 11 is connected to the top ends of the electrolytic frames 2 corresponding to all the cathode plates 4; this structure facilitates draining oxygen and hydrogen separately to avoid mixing of oxygen and hydrogen.

[0041] As Figure 2 shown, a plurality of connection holes 110 are evenly provided at the edge position of the support end plate 1 for the compression screw 8 to pass through the support end plate 1; an installation hole 120 is provided at the bottom of the support end plate 1, and the installation hole 120 is used to install the electrolyte delivery pipe 9; a bottom plate 130 is provided at the bottom end of the support end plate 1, and a plurality of bolt holes 140 are evenly provided on the bottom plate 130; the cooperation of the bottom plate 130 and the bolt holes 140 facilitates fixing the position of the support end plate 1, so as to achieve the purpose of fixing the entire electrolytic cell.

[0042] As Figure 3 shown, connection heads 21 are provided at both the top and bottom ends of the electrolytic frame 2. A through hole 22 is provided in the middle of the connection head 21 and is communicated with the inside of the electrolytic frame 2. The connection head 21 at the top of the electrolytic frame 2 is used to connect with the oxygen drainage pipe 10 or the hydrogen drainage pipe 11, and the connection head 21 at the bottom of the electrolytic frame 2 is used to connect with the electrolyte delivery pipe 9.

[0043] As Figure 4As shown, the cathode plate 4 and the anode plate 7 have the same structure. The cathode plate 4 and the anode plate 7 are made of copper, and this structure facilitates the connection of the cathode plate 4 and the anode plate 7 to the cathode and anode of the DC power supply respectively. Connection feet 41 are provided on the sides of both the cathode plate 4 and the anode plate 7, and a wiring port 42 is provided in the middle of the connection feet 41. The cooperation of the connection feet 41 and the wiring port 42 is to facilitate the connection of wires, thereby facilitating the energization of the cathode plate 4 and the anode plate 7. The reaction formula at the cathode plate 4 is: 2H2O + 2e - →H2 + 2OH - ; the reaction formula at the anode plate 7 is: 2OH - →1 / 2O2 + H2O + 2e - ; through the reaction formula, the chemical reactions occurring at the cathode and anode can be intuitively seen. The effective reaction areas of the cathode plate 4 and the anode plate 7 are S c and S a respectively, the current density is J, the cell voltage is V, and the electrolysis temperature is T. The cell voltage V can be expressed as: V = E e q + η c + η a + IR; where E eq is the theoretical decomposition voltage, η c is the cathode overpotential, η a is the anode overpotential, I is the current, and R is the internal resistance of the electrolytic cell; based on the above parameters, the cell voltage can be calculated, which is convenient for users to accurately calculate the corresponding data when calculating data is required. The electrolysis efficiency η e ff at the cathode plate 4 or the anode plate 7 can be expressed as: where, n HO is the number of moles of hydrogen or oxygen generated, F is the Faraday constant, is the molar volume of hydrogen, and t is the electrolysis time; it is convenient to calculate the corresponding electrolysis efficiency of the cathode or anode according to the above formula.

[0044] Such as Figure 5 Figure 6 , Figure 7 and Figure 8As shown, the diaphragm assembly 6 includes a mounting frame 61, a pressing ring 62, fixing bolts 63 and a diaphragm body 64. The diaphragm body 64 is attached to the inner side of the mounting frame 61. The pressing ring 62 presses on the diaphragm body 64, and the fixing bolts 63 connect the pressing ring 62 and the mounting frame 61. This structure facilitates pressing and fixing the diaphragm body 64 inside the mounting frame 61, and also facilitates replacing the corresponding diaphragm body 64 according to usage requirements. By pressing the diaphragm body 64 with the pressing ring 62, the stable connection between the diaphragm body 64 and the mounting frame 61 is ensured, and at the same time, the replacement of the diaphragm body 64 is facilitated. A pressing groove 611 is provided on the inner side of one end of the mounting frame 61. A plurality of limiting posts 612 are evenly provided inside the pressing groove 611. A connecting groove 613 is provided in the middle of the limiting posts 612. The edge of the diaphragm body 64 is sleeved on the limiting posts 612. This structure facilitates the stable installation of the diaphragm body 64 inside the mounting frame 61, and at the same time, the limiting posts 612 also facilitate the threaded connection between the mounting frame 61 and the fixing bolts 63. A counterbore 621 is provided on the pressing ring 62 at the position aligned with the connecting groove 613. The pressing ring 62 is pressed into the pressing groove 611, and the fixing bolts 63 pass through the counterbore 621 and are threadedly connected to the connecting groove 613. A surface coating 641 is coated on the surface of the diaphragm body 64, and the surface coating 641 contains zirconia and polymer. This structure facilitates the better cooperation of the diaphragm body 64 with the electrolytic cell for electrolytic water hydrogen production.

[0045] As Figure 9 shown, connecting screws 81 are provided at both ends of the pressing screw 8. The connecting screws 81 pass through the connecting holes 110, and a pressing cap 82 is provided at one end of the connecting screw 81 passing through the connecting hole 110. The pressing cap 82 presses on the support end plate 1. This structure facilitates the stable connection of the two support end plates 1 by the pressing screw 8, and the distance between the two support end plates 1 can be reduced by turning the pressing cap 82.

[0046] As Figure 10 shown, a row of shunt pipes 91 are provided on the side of the electrolyte delivery pipe 9. First adapter caps 92 are provided at the tops of the shunt pipes 91. The first adapter caps 92 are connected to the connection heads 21 at the bottom end of the electrolytic frame 2. This structure facilitates the smooth delivery of the electrolyte into the electrolytic frame 2, ensuring that the electrolyte is delivered to the corresponding electrolytic frames 2 respectively. Threaded connection pipes 93 are provided at both ends of the electrolyte delivery pipe 9. The threaded connection pipes 93 facilitate the connection of the electrolyte delivery pipe 9 to the external electrolyte supply pipe.

[0047] As Figure 11As shown, the oxygen drainage pipe 10 and the hydrogen drainage pipe 11 have the same structure. A row of diversion pipes 101 are provided on the sides of the oxygen drainage pipe 10 and the hydrogen drainage pipe 11. A second adapter cap 102 is provided at the bottom of the diversion pipe 101, and the second adapter cap 102 is connected to the connector 21 at the top of the electrolysis cell 2. This structure facilitates the connection of the oxygen drainage pipe 10 and the hydrogen drainage pipe 11 to the electrolysis cell 2 that generates oxygen or hydrogen respectively, so as to facilitate the connection of all the electrolysis cells 2 that generate oxygen, or the connection of all the electrolysis cells 2 that generate hydrogen.

[0048] Working principle: During use, calculate the number of electrolysis cells 2 required according to the demand, and then use the compression screw 8 to cooperate with the support end plate 1 to assemble multiple electrolysis cells 2 together with the thin gasket 3, the thick gasket 5, the diaphragm assembly 6, the cathode plate 4 and the anode plate 7; connect the electrolyte delivery pipe 9 to multiple electrolysis cells 2, connect the oxygen drainage pipe 10 to the electrolysis cell 2 that generates oxygen, and connect the hydrogen drainage pipe 11 to the electrolysis cell 2 that generates hydrogen; connect the anode plate 7 and the cathode plate 4 to the anode and cathode of the DC power supply respectively; then inject an appropriate amount of electrolyte into the electrolysis cell 2, turn on the DC power supply, and after the current flows through the anode plate 7 or the cathode plate 4, corresponding chemical reactions will occur. Hydrogen is generated at the cathode, and oxygen is generated at the anode. The generated hydrogen and oxygen are led out from the hydrogen drainage pipe 11 and the oxygen drainage pipe 10 respectively. Compared with the prior art, in this application, multiple electrolysis cells 2 are installed between two support end plates 1. The electrolysis cells 2 are used to store the electrolyte, and the electrolyte is electrolyzed by energizing the anode plate 7 or the cathode plate 4, so that only oxygen or hydrogen is generated inside each electrolysis cell 2, which facilitates the centralized drainage of oxygen and hydrogen; at the same time, thin gaskets 3 or thick gaskets 5 are provided between the electrolysis cells 2 and between the electrolysis cells 2 and the support end plates 1, so that effective sealing can be achieved between the electrolysis cells 2 and between the electrolysis cells 2 and the support end plates 1, avoiding problems such as liquid leakage or gas leakage.

[0049] Embodiment 2

[0050] As Figure 1As shown in the figure, an electrolytic cell containing an alkaline electrolyzed water hydrogen production diaphragm includes two support end plates 1, and also includes a plurality of electrolytic frames 2. A plurality of electrolytic frames 2 are evenly arranged between the two support end plates 1. The support end plates 1 are used to support the entire electrolytic cell. At the same time, the support end plates 1 can also clamp and fix the plurality of electrolytic frames 2 to ensure effective sealing between the electrolytic frames 2. Thin gaskets 3 are provided at both ends of the electrolytic frame 2, and between the thin gaskets 3 of two adjacent electrolytic frames 2, a cathode plate 4 or an anode plate 7, a thick gasket 5, and a diaphragm assembly 6 are sequentially arranged from back to front. The cathode plates 4 and the anode plates 7 are arranged in an aligned and staggered manner from back to front; this structure facilitates pressing and fixing the various components of the electrolytic cell by shrinking the distance between the two support end plates 1, ensuring good sealing of the entire electrolytic cell, and at the same time enabling the various components of the electrolytic cell to cooperate closely. The two support end plates 1 are connected by a plurality of compression screws 8. By shortening the distance between the two support end plates 1 through the plurality of compression screws 8, the plurality of electrolytic frames 2 are pressed and sealed with each other; the bottoms of the two support end plates 1 are connected with electrolyte delivery pipes 9, and the electrolyte delivery pipes 9 are respectively connected to the bottoms of the plurality of electrolytic frames 2; the electrolyte delivery pipes 9 are used to deliver electrolyte inside each electrode frame. Oxygen drainage pipes 10 and hydrogen drainage pipes 11 are respectively provided directly above the plurality of electrolytic frames 2. The oxygen drainage pipes 10 are connected to the tops of the electrolytic frames 2 corresponding to all the anode plates 7, and the hydrogen drainage pipes 11 are connected to the tops of the electrolytic frames 2 corresponding to all the cathode plates 4; this structure facilitates draining oxygen and hydrogen separately to avoid mixing of oxygen and hydrogen.

[0051] As Figure 2 shown, a plurality of connection holes 110 are evenly provided at the edge position of the support end plate 1 for the compression screws 8 to pass through the support end plate 1; an installation hole 120 is provided at the bottom of the support end plate 1, and the installation hole 120 is used to install the electrolyte delivery pipe 9; a bottom plate 130 is provided at the bottom end of the support end plate 1, and a plurality of bolt holes 140 are evenly provided on the bottom plate 130; the cooperation of the bottom plate 130 and the bolt holes 140 facilitates fixing the position of the support end plate 1, thereby achieving the purpose of fixing the entire electrolytic cell.

[0052] As Figure 3 shown, connection heads 21 are provided at both the top and bottom ends of the electrolytic frame 2. A through hole 22 is provided in the middle of the connection head 21 and is communicated with the inside of the electrolytic frame 2. The connection head 21 at the top of the electrolytic frame 2 is used to be connected with the oxygen drainage pipe 10 or the hydrogen drainage pipe 11, and the connection head 21 at the bottom of the electrolytic frame 2 is used to be connected with the electrolyte delivery pipe 9.

[0053] As Figure 4As shown, the cathode plate 4 and the anode plate 7 have the same structure. The cathode plate 4 and the anode plate 7 are made of copper, and this structure facilitates the connection of the cathode plate 4 and the anode plate 7 to the cathode and anode of the DC power supply respectively. Connection feet 41 are provided on the sides of both the cathode plate 4 and the anode plate 7, and a wiring port 42 is provided in the middle of the connection feet 41; the cooperation of the connection feet 41 and the wiring port 42 is to facilitate the connection of wires, thus facilitating the energization of the cathode plate 4 and the anode plate 7; the reaction formula at the cathode plate 4 is: 2H2O + 2e - →H2 + 2OH - ; the reaction formula at the anode plate 7 is: 2OH - →1 / 2O2 + H2O + 2e - ; through the reaction formula, the chemical reactions occurring at the cathode and anode can be intuitively seen. The effective reaction areas of the cathode plate 4 and the anode plate 7 are S c and S a respectively, the current density is J, the cell voltage is V, and the electrolysis temperature is T; the cell voltage V can be expressed as: V = E e q + η c + η a + IR; where, E eq is the theoretical decomposition voltage, η c is the cathode overpotential, η a is the anode overpotential, I is the current, and R is the internal resistance of the electrolytic cell; based on the above parameters, the cell voltage can be calculated, which facilitates the accurate calculation of the corresponding data by the user when calculating data is required. The electrolysis efficiency η e ff at the cathode plate 4 or the anode plate 7 can be expressed as: where, n HO is the number of moles of hydrogen or oxygen generated, F is the Faraday constant, is the molar volume of hydrogen, and t is the electrolysis time; it is convenient to calculate the corresponding electrolysis efficiency of the cathode or anode according to the above formula.

[0054] Such as Figure 5 Figure 6 、 Figure 7 and Figure 8As shown, the diaphragm assembly 6 includes a mounting frame 61, a pressing ring 62, fixing bolts 63, and a diaphragm body 64. The diaphragm body 64 is attached to the inner side of the mounting frame 61. The pressing ring 62 presses against the diaphragm body 64, and the fixing bolts 63 connect the pressing ring 62 and the mounting frame 61. This structure facilitates pressing and fixing the diaphragm body 64 inside the mounting frame 61 and also facilitates replacing the corresponding diaphragm body 64 according to usage requirements. By pressing the diaphragm body 64 with the pressing ring 62, the stable connection between the diaphragm body 64 and the mounting frame 61 is ensured, and at the same time, the replacement of the diaphragm body 64 is facilitated. Inside one end of the mounting frame 61, there is a pressing groove 611. Inside the pressing groove 611, a plurality of limiting posts 612 are evenly arranged. In the middle of the limiting posts 612, there is a connecting groove 613. The edge of the diaphragm body 64 is sleeved on the limiting posts 612. This structure facilitates the stable installation of the diaphragm body 64 inside the mounting frame 61, and at the same time, the limiting posts 612 also facilitate the threaded connection between the mounting frame 61 and the fixing bolts 63. At the position of the connecting groove 613 on the pressing ring 62, there is a counterbore 621. The pressing ring 62 is pressed into the inside of the pressing groove 611, and the fixing bolts 63 pass through the counterbore 621 and are threadedly connected to the connecting groove 613. On the surface of the diaphragm body 64, there is a surface coating 641, and the surface coating 641 contains zirconia and polymer. This structure facilitates the better cooperation of the diaphragm body 64 with the electrolytic cell for electrolytic water hydrogen production.

[0055] As Figure 9 shown, at both ends of the pressing screw 8, there are connecting screws 81. The connecting screws 81 pass through the connecting holes 110, and at one end of the connecting screws 81 passing through the connecting holes 110, there is a pressing cap 82. The pressing cap 82 presses against the supporting end plate 1. This structure facilitates the stable connection of the two supporting end plates 1 by the pressing screw 8, and by turning the pressing cap 82, the distance between the two supporting end plates 1 can be reduced.

[0056] As Figure 10 shown, on the side of the electrolyte delivery pipe 9, there is a row of shunt pipes 91. At the top of each shunt pipe 91, there is a first adapter cap 92. The first adapter cap 92 is connected to the connection head 21 at the bottom end of the electrolytic cell frame 2. This structure facilitates the smooth delivery of the electrolyte into the electrolytic cell frame 2 and ensures that the electrolyte is delivered to the corresponding electrolytic cell frame 2 respectively. At both ends of the electrolyte delivery pipe 9, there are threaded connection pipes 93, and the threaded connection pipes 93 facilitate the connection of the electrolyte delivery pipe 9 to the external electrolyte supply pipeline.

[0057] As Figure 11As shown, the oxygen drainage pipe 10 and the hydrogen drainage pipe 11 have the same structure. A row of diversion pipes 101 are provided on the sides of the oxygen drainage pipe 10 and the hydrogen drainage pipe 11. A second adapter cap 102 is provided at the bottom of the diversion pipe 101, and the second adapter cap 102 is connected to the connector 21 at the top of the electrolysis cell 2. This structure facilitates the connection of the oxygen drainage pipe 10 and the hydrogen drainage pipe 11 to the corresponding electrolysis cells 2 that generate oxygen or hydrogen respectively, so as to facilitate the connection of all the electrolysis cells 2 that generate oxygen or the connection of all the electrolysis cells 2 that generate hydrogen.

[0058] As Figure 12 shown, it further includes connection terminals 12. There are two connection terminals 12. One connection terminal 12 is simultaneously connected to the connection feet 41 of multiple anode plates 7, and the other connection terminal 12 is simultaneously connected to the connection feet 41 of multiple cathode plates 4. This structure facilitates the simultaneous power supply to multiple cathode plates 4 or anode plates 7, avoiding the need to wire each cathode plate 4 or anode plate 7 separately. Limit end plates 122 are provided at both ends of the connection terminal 12, and the limit end plates 122 are used to limit the connection terminal 12 from both ends. A plurality of compression nuts 121 are provided on the connection terminal 12, and the compression nuts 121 are used to press on the connection feet 41 to achieve the purpose of fixing the connection terminal 12. A connection frame 123 is provided on the side of the connection terminal 12. An ear plate 124 is provided at the bottom of the connection frame 123. A wire passing hole 125 is provided in the middle of the ear plate 124. The ear plate 124 and the wire passing hole 125 are used to be connected to the positive or negative pole of the DC power supply, facilitating the quick wiring and power-on of the cathode plate 4 or the anode plate 7.

[0059] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An alkaline electrolyzed water hydrogen production diaphragm, characterized in that, The alkaline electrolyzed water hydrogen production diaphragm includes a mounting frame (61), a pressing ring (62), fixing bolts (63) and a diaphragm body (64). The diaphragm body (64) is attached to the inner side of the mounting frame (61). The pressing ring (62) is pressed against the diaphragm body (64), and the fixing bolts (63) connect the pressing ring (62) and the mounting frame (61). By pressing the diaphragm body (64) with the pressing ring (62), the stable connection between the diaphragm body (64) and the mounting frame (61) is ensured, and at the same time, the replacement of the diaphragm body (64) is facilitated.

2. The alkaline electrolyzed water hydrogen production diaphragm according to claim 1, wherein One end of the mounting frame (61) is provided with a pressing groove (611) on the inner side. A plurality of limiting posts (612) are evenly arranged inside the pressing groove (611). A connecting groove (613) is provided in the middle of the limiting posts (612). The edge of the diaphragm body (64) is sleeved on the limiting posts (612). A counterbore (621) is provided at the position of the pressing ring (62) aligned with the connecting groove (613). The pressing ring (62) is pressed into the pressing groove (611). The fixing bolt (63) passes through the counterbore (621) and is threadedly connected to the connecting groove (613). A surface coating (641) is coated on the surface of the diaphragm body (64), and the surface coating (641) contains zirconia and polymer.

3. An electrolytic cell, comprising two support end plates (1), characterized in that, It further includes a plurality of electrolysis frames (2). A plurality of electrolysis frames (2) are evenly arranged between the two support end plates (1). Thin gaskets (3) are provided at both ends of the electrolysis frames (2). Between the thin gaskets (3) of two adjacent electrolysis frames (2), a cathode plate (4) or an anode plate (7), a thick gasket (5) and a diaphragm assembly (6) are sequentially arranged from back to front. The cathode plates (4) and the anode plates (7) are aligned and staggered from back to front. The two support end plates (1) are connected by a plurality of pressing screws (8). By shortening the distance between the two support end plates (1) through the plurality of pressing screws (8), the plurality of electrolysis frames (2) are pressed and sealed with each other. The bottoms of the two support end plates (1) are connected with an electrolyte delivery pipe (9), and the electrolyte delivery pipe (9) is respectively connected to the bottom ends of the plurality of electrolysis frames (2). Above the plurality of electrolysis frames (2), an oxygen drainage pipe (10) and a hydrogen drainage pipe (11) are respectively provided. The oxygen drainage pipe (10) is connected to the top ends of the electrolysis frames (2) corresponding to all the anode plates (7), and the hydrogen drainage pipe 11 is connected to the top ends of the electrolysis frames (2) corresponding to all the cathode plates (4). The diaphragm assembly (6) is the alkaline electrolyzed water hydrogen production diaphragm according to any one of claims 1-2.

4. The electrolytic cell according to claim 3, characterized in that, A plurality of connection holes (110) are evenly provided at positions of the support end plate (1) close to the edge for the pressing screws (8) to pass through the support end plate (1). An installation hole (120) is provided at the bottom of the support end plate (1), and the installation hole (120) is used for installing the electrolyte delivery pipe (9). A bottom plate (130) is provided at the bottom end of the support end plate (1), and a plurality of bolt holes (140) are evenly provided on the bottom plate (130).

5. An electrolytic cell according to claim 3, characterized in that, Both the top and bottom of the electrolysis cell (2) are provided with connectors (21). A flow-through hole (22) is provided in the middle of the connector (21) and is communicated with the inside of the electrolysis cell (2). The connector (21) at the top of the electrolysis cell (2) is used to connect with the oxygen drainage pipe (10) or the hydrogen drainage pipe (11), and the connector (21) at the bottom of the electrolysis cell (2) is used to connect with the electrolyte delivery pipe (9).

6. An electrolytic cell according to claim 3, characterized in that, The cathode plate (4) and the anode plate (7) have the same structure. The cathode plate (4) and the anode plate (7) are made of copper. Connecting feet (41) are provided on the sides of the cathode plate (4) and the anode plate (7), and a wiring port (42) is provided in the middle of the connecting feet (41). The reaction formula at the cathode plate (4) is: 2H2O + 2e - →H2 + 2OH - ; The reaction formula at the anode plate (7) is: 2OH - →1 / 2O2 + H2O + 2e - ; The effective reaction areas of the cathode plate (4) and the anode plate (7) are S c and S a respectively, the current density is J, the cell voltage is V, and the electrolysis temperature is T; the cell voltage V is expressed as: V = E e q + η c + η a + IR; where E eq is the theoretical decomposition voltage, η c is the cathode overpotential, η a is the anode overpotential, I is the current, and R is the internal resistance of the electrolytic cell; The electrolysis efficiency η at the cathode plate (4) or the anode plate (7) e is expressed as: where n HO is the number of moles of hydrogen or oxygen produced, F is the Faraday constant, is the molar volume of hydrogen, and t is the electrolysis time.

7. An electrolytic cell according to claim 4, characterized in that, Both ends of the compression screw (8) are provided with connecting screws (81). The connecting screws (81) pass through the connecting holes (110), and a compression cap (82) is provided at one end of the connecting screw (81) passing through the connecting hole (110). The compression cap (82) presses against the support end plate (1).

8. An electrolytic cell according to claim 4, characterized in that, A row of shunt pipes (91) is provided on the side of the electrolyte delivery pipe (9). First adapter caps (92) are provided at the tops of the shunt pipes (91), and the first adapter caps (92) are connected to the connectors (21) at the bottom of the electrolysis cell (2). Threaded connecting pipes (93) are provided at both ends of the electrolyte delivery pipe (9).

9. An electrolytic cell according to claim 5, characterized in that, The oxygen drainage pipe (10) and the hydrogen drainage pipe (11) have the same structure. A row of diversion pipes (101) is provided on the sides of the oxygen drainage pipe (10) and the hydrogen drainage pipe (11). Second adapter caps (102) are provided at the bottoms of the diversion pipes (101), and the second adapter caps (102) are connected to the connectors (21) at the top of the electrolysis cell (2).

10. An electrolytic cell according to claim 6, characterized in that, It also includes connection terminals (12). There are two connection terminals (12). One connection terminal (12) is connected to the connecting feet (41) of multiple anode plates (7) at the same time, and the other connection terminal (12) is connected to the connecting feet (41) of multiple cathode plates (4) at the same time. Limiting end plates (122) are provided at both ends of the connection terminal (12), and a plurality of compression nuts (121) are provided on the connection terminal (12). The compression nuts (121) are used to press against the connecting feet (41) to fix the connection terminal (12). A wiring frame (123) is provided on the side of the connection terminal (12). An ear plate (124) is provided at the bottom of the wiring frame (123), and a wire-passing hole (125) is provided in the middle of the ear plate (124). The ear plate (124) and the wire-passing hole (125) are used to connect with the positive or negative pole of the DC power supply.

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