Visual end plate assembly of alkaline water electrolytic tank and alkaline water electrolytic tank

Abstract

The utility model provides an alkaline water electrolyzer visual end plate assembly and an alkaline water electrolyzer, relates to the field of electrolyzers, and adopts the scheme that the alkaline water electrolyzer visual end plate assembly comprises an end plate and a conductive polar plate which are coaxially arranged, the end plate is made of a transparent and non-conductive material, the conductive polar plate is of an annular structure, a conductive plate is arranged on the peripheral surface of the conductive polar plate, and the conductive plate is made of a transparent and non-conductive material. And the conductive plate is used for being connected with a power supply. According to the utility model, internal electrode and flow field conditions can be observed from the end part of the electrolytic cell, thereby facilitating work such as optimization design of the electrolytic cell.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electrolytic cell especially relates to a basic water electrolytic cell visual end plate assembly and basic water electrolytic cell. BACKGROUND

[0002] The basic water electrolytic cell is a kind of equipment using direct current to electrolyze water to generate hydrogen and oxygen, and the electrolyte usually adopts potassium hydroxide (KOH) solution, under the action of direct current, water molecules occur electrochemical reaction on electrode, and water molecules are decomposed into hydrogen ion and hydroxyl ion at cathode electrode, hydrogen ion obtains electron to generate hydrogen atom, and further generates hydrogen molecule;Hydroxyl ion passes through porous diaphragm to reach anode electrode under the action of electric field force.In anode electrode, hydroxyl ion occurs oxidation reaction to generate oxygen and proton, and proton remains in solution to continue circulation.

[0003] In prior art, the main body of basic electrolytic cell is assembled by end plate, sealing gasket, polar plate, electrode, diaphragm and other components, and the electrolytic cell includes dozens of electrolytic cells or even hundreds of electrolytic cells, which are pressed together to form cylindrical or square by screw rod and end plate;End plate tightly fixes each component of electrolytic cell together to form an integral structure, and through the cooperation of screw rod and end plate, pressure is applied to each component to keep them tightly connected, prevent displacement or loosening due to internal pressure or other external force during electrolysis process, and ensure the sealing and stability of electrolytic cell;The material of electrolytic cell end plate needs to have good mechanical strength, and generally adopts metal material such as stainless steel or titanium alloy, and in bipolar electrolytic cell, end plate is usually connected to positive and negative poles of power supply to transmit current by contacting with adjacent polar plate (bipolar plate).

[0004] When the above technical scheme is adopted, since end plate adopts metal material, the internal electrode and flow field of electrolytic cell cannot be observed, and observing the flow field and electrode change in basic electrolytic cell is crucial for optimizing the design and operation of electrolytic cell, improving electrolysis efficiency and stability, and reducing cost, etc., so it can be seen that the basic electrolytic cell in prior art still restricts the development of electrolytic water hydrogen production technology. UTILITY MODEL CONTENTS

[0005] In order to solve the technical problem that the metal end plate of electrolytic cell in prior art cannot observe the electrode and flow field from end, the utility model provides a basic water electrolytic cell visual end plate assembly and basic water electrolytic cell, which can observe the internal electrode and flow field from the end of electrolytic cell, and is convenient for electrolytic cell optimization design and other work.

[0006] The utility model discloses a kind of visual end plate assemblies of alkaline water electrolytic cell to solve the technical problem described above, including coaxially arranged end plate and conductive plate, the end plate uses transparent and non-conductive material, conductive plate is provided on the outer circumferential surface of the conductive plate, and the conductive plate is used to be connected with power supply.

[0007] The utility model discloses by using transparent and non-conductive material to manufacture end plate, and under the action of conductive plate, metal end plate in prior art can be replaced, on the one hand, visualization is realized, so that operator sees the change situation of flow field and electrode from electrolytic cell end, on the other hand, non-conductive material is also used, and stray current, bypass current, parasitic current can be avoided, and energy loss can be avoided.

[0008] Further, the end plate and the conductive plate are further provided with a sealing gasket, the conductive plate includes an installation end surface three, the installation end surface three is close to the end plate, the end plate includes an installation end surface two, the installation end surface two is close to the conductive plate, the installation end surface three and the installation end surface two are provided with a sealing groove group one at corresponding positions, the sealing groove group one includes a plurality of sealing grooves, the sealing gasket is arranged between the installation end surface two and the installation end surface three, the conductive plate includes an installation end surface one, the installation end surface one is away from the end plate, the installation end surface one is provided with a sealing groove group two, the sealing groove group two includes a plurality of sealing grooves, and the sealing groove group two is oppositely arranged with the sealing groove group one.

[0009] The utility model discloses by the plurality of sealing grooves of sealing groove group one and sealing groove group two can form multiple sealing lines (similar to "labyrinth seal"), by increasing the complexity and resistance of leakage path, significantly reduce the risk of fluid leakage, not only improve the sealing property of the end plate assembly, but also improve the sealing property of the electrolytic cell.

[0010] Further, four flow channel holes are arranged on the conductive plate, the flow channel holes are through holes, the axial direction of the flow channel holes is parallel to the axial direction of the conductive plate, four holes two are arranged on the end plate, the axial direction of the holes two is parallel to the axial direction of the end plate, the four holes two on the end plate correspond to the four flow channel holes on the conductive plate one by one, the four holes two on the end plate are through holes and are used for the flow of alkaline water, oxygen and hydrogen respectively, and the positions corresponding to the holes two on the sealing gasket are provided with relief holes.

[0011] Further, the installation end face one is provided with a hydrogen guide groove and a water guide groove, the hydrogen guide groove communicates the inner circle of the conductive electrode plate with one of the upper flow channel holes, the water guide groove communicates the inner circle of the conductive electrode plate with one of the lower flow channel holes, two anti-blocking grooves are arranged on the installation end face one, the two anti-blocking grooves are communicated with the hydrogen guide groove and the water guide groove respectively, a support plate is arranged in the anti-blocking groove, and the depth of the anti-blocking groove is smaller than that of the hydrogen guide groove or the water guide groove.

[0012] The anti-blocking groove and the support plate are arranged, so that the deformed convex sealing ring can be prevented from entering the hydrogen guide groove and the water guide groove, the smooth flow of hydrogen and alkaline water is ensured, and electrolysis is smoothly carried out.

[0013] Further, four acceleration grooves are arranged on the installation end face two, and the acceleration grooves are communicated with the corresponding holes two.

[0014] The acceleration grooves are arranged on the end plate, the cross-sectional area is increased, the flow rate of gas and alkaline water is improved, gas is prevented from gathering in the electrolytic tank, and meanwhile, the improvement of the flow rate of alkaline water is beneficial to accelerating heat dissipation of the electrolytic tank.

[0015] Further, four flow channel holes are arranged on the conductive electrode plate, the flow channel holes are through holes, the axial direction of the flow channel holes is parallel to the axial direction of the conductive electrode plate, four holes two are arranged on the end plate, the axial direction of the holes two is parallel to the axial direction of the end plate, the four holes two on the end plate correspond to the four flow channel holes on the conductive electrode plate one by one, the four holes two on the end plate are blind holes and are used for mounting positioning pins during assembly, and the position corresponding to the holes two on the sealing gasket is provided with a relief hole.

[0016] The holes two are arranged, so that the accuracy during assembly is ensured, and the assembly efficiency is improved.

[0017] Further, installation grooves one and two are arranged on the installation end face one, the installation groove one has a smaller diameter than the installation groove two, the installation groove one is used for placing an anode electrode, the installation groove two is used for placing a diaphragm, oxygen guide grooves and water guide grooves are arranged on the installation end face one, the oxygen guide grooves communicate the inner circle of the conductive electrode plate with one of the upper flow channel holes, the water guide grooves communicate the inner circle of the conductive electrode plate with one of the lower flow channel holes, two anti-blocking grooves are arranged on the installation end face one, the two anti-blocking grooves are communicated with the oxygen guide grooves and the water guide grooves respectively, a support plate is arranged in the anti-blocking groove, and the depth of the anti-blocking groove is smaller than that of the oxygen guide groove or the water guide groove.

[0018] The utility model discloses a accelerate groove is set up in end plate, forms a buffer chamber, oxygen or alkaline water is diffused into accelerate groove before entering hole, and the section area increases, and the flow rate reduces, and it is convenient for the observation of convection field.

[0019] Further, the mounting end face two is provided with a boss, the end face of the boss is provided with a plurality of protrusions, the boss is located in the conductive electrode plate inner circle, the protrusion is cylindrical structure, or the protrusion is square structure, or the protrusion is conical structure.

[0020] The utility model discloses a boss and protrusion can play the role of supporting electrode and diaphragm, optimizing current distribution and current collection, thereby replacing support net, need not arranging support net at the position of electrolytic cell close to end plate, simplifies electrolytic cell structure.

[0021] Further, the mounting hole is parallel with the axial direction of the end plate.

[0022] Secondly, the utility model provides an alkaline water electrolytic tank, which comprises an anode electrode and a cathode electrode, a diaphragm and a sealing ring are arranged between the anode electrode and the cathode electrode, and further comprises two alkaline water electrolytic tank visualized end plate assemblies, the anode electrode, the diaphragm, the sealing ring and the cathode electrode are coaxially arranged between the two alkaline water electrolytic tank visualized end plate assemblies, the conductive electrode plate close to the anode electrode is used for connecting a positive electrode of a power supply, the conductive electrode plate close to the cathode electrode is used for connecting a negative electrode of the power supply, and a tension bolt penetrates between the two alkaline water electrolytic tank visualized end plate assemblies.

[0023] From the above technical scheme, the utility model has the following advantages:

[0024] The utility model provides a kind of basic water electrolytic cell visual end plate assembly and basic water electrolytic cell, by using transparent and not conducting material manufacturing end plate, and under the action of conductive plate, metal end plate in prior art can be replaced, on the one hand, realize visualization, so that operator sees the change situation of flow field and electrode from electrolytic cell end, on the other hand, using not conducting material, stray current, bypass current, parasitic current can also be avoided, avoid causing energy loss;Multiple sealing grooves of sealing groove group one and sealing groove group two can form multiple sealing lines (similar to "labyrinth seal"), by increasing the complexity and resistance of leakage path, significantly reduce the risk of fluid leakage, not only improve the sealing property of the end plate assembly also improves the sealing property of electrolytic cell;By setting anti-blocking groove and support plate can avoid sealing ring deformation bulge into hydrogen guide groove and water guide groove, ensure the smooth flow of hydrogen and basic water, ensure that electrolysis is carried out smoothly;By setting hole two can guarantee accuracy in assembly process, improve assembly efficiency;By setting acceleration groove in end plate, form a buffer chamber, hydrogen or basic water is diffused into acceleration groove before entering hole, cross-sectional area increases, flow rate reduces, facilitate to observe flow field;By setting boss and protrusion can play the role of supporting electrode and diaphragm, optimizing current distribution and current collection, thereby replacing support net, without arranging support net in the position of electrolytic cell close to end plate, simplify electrolytic cell structure. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme of the utility model, the following will be briefly introduced the drawings needed to be used in description, obviously, the drawings in the following description only some embodiments of the utility model, for those skilled in the art, without creative labor, other drawings can also be obtained according to these drawings.

[0026] Figure 1 It is the structural schematic diagram of the embodiment one of the utility model.

[0027] Figure 2 It is the structural schematic diagram of the end plate in the embodiment one of the utility model.

[0028] Figure 3 It is the structural schematic diagram of the mounting end surface two of the end plate in the embodiment one of the utility model.

[0029] Figure 4 It is the structural schematic diagram of the mounting end surface one of the conductive plate in the embodiment one of the utility model.

[0030] Figure 5 It is the partial structural schematic diagram of the conductive plate in the embodiment one of the utility model.

[0031] Figure 6 It is the structural schematic diagram of the embodiment two of the utility model.

[0032] Figure 7 It is the structure schematic view of the mounting end face two of the end plate in the second embodiment of the utility model.

[0033] Figure 8 It is the structure schematic view of the mounting end face three of the conductive pole plate in the second embodiment of the utility model.

[0034] Figure 9 It is the structure schematic view of the mounting end face one of the conductive pole plate in the second embodiment of the utility model.

[0035] Figure 10 It is the structure schematic view of the mounting end face one of the conductive pole plate in the second embodiment of the utility model.

[0036] Figure 11 It is the structure schematic view of the mounting end face two of the end plate in the second embodiment of the utility model.

[0037] Figure 12 It is the structure schematic view of the mounting end face three of the conductive pole plate in the second embodiment of the utility model.

[0038] In the drawing, 1, end plate;2, sealing gasket;3, conductive pole plate;4, anode electrode;5, diaphragm;6, sealing ring;7, cathode electrode;8, mounting hole;9, hole two;10, boss;11, protrusion;12, conductive plate;13, sealing groove group one;14, flow channel hole;15, anti-blocking groove;16, hydrogen guide groove;17, connecting hole;18, water guide groove;19, sealing groove group two;20, acceleration groove;21, oxygen guide groove;22, mounting groove two;23, mounting groove one;24, mounting end face two;25, mounting end face three;26, mounting end face one. Specific embodiments

[0039] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme in the utility model will be described clearly and completely below by combining the drawings in the specific embodiment. Obviously, the following described embodiments are only some of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the patent, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of the patent protection. Specific embodiment one

[0041] As Figure 1As shown, the present embodiment provides an alkaline water electrolysis tank visual end plate assembly, which comprises coaxially arranged end plate 1 and conductive electrode plate 3, the end plate 1 is made of transparent and non-conductive material, the conductive electrode plate 3 is in ring structure, and the outer peripheral surface of the conductive electrode plate 3 is provided with a conductive plate 12 for connecting with a power supply, the conductive plate 12 is welded with the conductive electrode plate 3 or is in cast integrated structure, the end plate 1 can be made of acrylic or quartz glass, and the conductive electrode plate 3 can be made of stainless steel or carbon steel plated with nickel, in the present embodiment, the end plate 1 is made of quartz glass, and the conductive electrode plate 3 is made of carbon steel plated with nickel.

[0042] The present embodiment uses transparent and non-conductive material to manufacture the end plate 1, and under the action of the conductive electrode plate 3, the metal end plate 1 in the prior art can be replaced, on the one hand, visualization is realized, so that the operator can see the change of the flow field and the electrode from the end of the electrolysis tank, on the other hand, the use of non-conductive material can also avoid the generation of stray current, bypass current and parasitic current, and energy loss.

[0043] As shown in Figures 3 to 5 In order to enhance the sealing property, the end plate 1 and the conductive electrode plate 3 are made of different materials, and the sealing gasket 2 is arranged between the end plate 1 and the conductive electrode plate 3, the conductive electrode plate 3 comprises an installation end surface three 25 close to the end plate 1, the end plate 1 comprises an installation end surface two 24 close to the conductive electrode plate 3, the installation end surface three 25 and the installation end surface two 24 are provided with sealing groove group one 13 at corresponding positions, the sealing groove group one 13 comprises multiple sealing grooves, the sealing gasket 2 is arranged between the installation end surface two 24 and the installation end surface three 25, the conductive electrode plate 3 comprises an installation end surface one 26 away from the end plate 1, and the installation end surface one 26 is provided with sealing groove group two 19, the sealing groove group two 19 comprises multiple sealing grooves, and the sealing groove group two 19 is arranged opposite to the sealing groove group one 13; multiple sealing lines (similar to "labyrinth seal") can be formed through the multiple sealing grooves of the sealing groove group one 13 and the sealing groove group two 19, the complexity and resistance of the leakage path are increased, and the risk of alkaline water leakage is significantly reduced, the sealing groove group one 13 improves the sealing property of the end plate assembly, and the sealing groove group two 19 improves the sealing property of the electrolysis tank.

[0044] As shown in Figures 3 to 5As shown, the present embodiment is located at the cathode of the electrolytic cell, and the end plate assembly is at the cathode end, and flow channels for forming alkaline water, oxygen and hydrogen are provided on the conductive end plate 3, and four flow channel holes 14 are provided on the conductive end plate 3, the flow channel holes 14 are through holes, the axial direction of the flow channel holes 14 is parallel to the axial direction of the conductive end plate 3, and four holes two 9 are provided on the end plate 1, the axial direction of the holes two 9 is parallel to the axial direction of the end plate 1, the four holes two 9 on the end plate 1 correspond to the four flow channel holes 14 on the conductive end plate 3, and the four holes two 9 on the end plate 1 are through holes for the flow of alkaline water, oxygen and hydrogen, respectively, and the gasket 2 is provided with a relief hole at a position corresponding to the hole two 9; due to the existence of the gasket 2, in order to avoid the gasket 2 affecting the flow of gas or liquid, the installation end face one 26 is provided with a hydrogen guide groove 16 and a water guide groove 18, the hydrogen guide groove 16 and the water guide groove 18 are arranged along the radial direction of the conductive end plate 3, the hydrogen guide groove 16 communicates the inner ring of the conductive end plate 3 with the upper one of the flow channel holes 14, and the water guide groove 18 communicates the inner ring of the conductive end plate 3 with the lower one of the flow channel holes 14; in the single-chamber electrolytic cell, the two end plates 1 are pressed on the sealing ring 6, the sealing ring 6 is relatively thin and will be elastically deformed, thereby causing bulging, which is easy to block the hydrogen guide groove 16 and the water guide groove 18, in order to solve this technical problem, the installation end face one 26 is provided with two anti-blocking grooves 15, the two anti-blocking grooves 15 respectively communicate with the hydrogen guide groove 16 and the water guide groove 18, and a support plate is arranged in the anti-blocking groove 15, the depth of the anti-blocking groove 15 is less than the depth of the hydrogen guide groove 16 or the water guide groove 18, in the present embodiment, the support plate is made of stainless steel, and the support plate spans the hydrogen guide groove 16 and the water guide groove 18.

[0045] As shown, Figure 3 hydrogen and oxygen flow faster, in order to be able to observe the flow field more carefully, four acceleration grooves 20 are provided on the installation end face two 24, the acceleration grooves 20 communicate with the corresponding holes two 9, after this setting, the cross-sectional area is increased, the flow rate of the gas and the alkaline water is increased, and the gas is prevented from gathering in the electrolytic cell, and at the same time, increasing the flow rate of the alkaline water is beneficial to speeding up the heat dissipation of the electrolytic cell.

[0046] As shown, Figure 2 and Figure 3As shown, in the prior art, a support net is provided to enhance the support of the electrode and the diaphragm 5; in the present embodiment, a boss 10 is provided on the mounting end surface two 24 to simplify the structure of the electrolytic cell, the boss 10 is close to the electrode and serves as a support, and a plurality of protrusions 11 are provided on the end surface of the boss 10, the boss 10 is located in the inner circle of the conductive electrode plate 3, and the plurality of protrusions 11 can optimize the current distribution and current collection; the protrusions 11 can adopt a cylindrical structure, a square structure or a conical structure, and in the present embodiment, a cylindrical structure is adopted; the boss 10 and the protrusions 11 can serve to support the electrode and the diaphragm 5 and optimize the current distribution and current collection, thereby replacing the support net, and there is no need to arrange a support net near the end plate 1 of the electrolytic cell, thus simplifying the structure of the electrolytic cell.

[0047] As shown in Figure 2 to realize the pressing installation of other components of the electrolytic cell, the mounting hole 8 is provided on the end plate 1, the axial direction of the mounting hole 8 is parallel to the axial direction of the end plate 1, and in the present embodiment, four mounting holes 8 are provided.

[0048] As shown in Figure 4 to facilitate the access of temperature and voltage sensors to collect voltage and temperature data of the electrolytic cell, two connecting holes 17 are provided on the outer peripheral surface of the conductive electrode plate 3. Embodiment two

[0050] As shown in Figures 6 to 8 the present embodiment provides a visual end plate assembly for an alkaline water electrolytic cell, which has basically the same structure as that of embodiment one, and the difference lies in that: the present end plate assembly is used for the anode of the electrolytic cell, four hole twos 9 are provided on the end plate 1, the axial direction of the hole two 9 is parallel to the axial direction of the end plate 1, the four hole twos 9 on the end plate 1 correspond to the four flow channel holes 14 on the conductive electrode plate 3 one by one, the four hole twos 9 on the end plate 1 are blind holes respectively used for mounting positioning pins during assembly, the sealing gasket 2 is provided with a relief hole at a position corresponding to the hole two 9, and no acceleration groove 20 is provided on the mounting end surface two 24 of the end plate 1.

[0051] The present embodiment is provided on the anode of the electrolytic cell, the hole two 9 is set as a blind hole, there is no need to connect a corresponding pipeline (metal pipeline joint) at the end plate 1, no bypass current is generated, energy loss is further reduced, and the blind hole can be set to insert the positioning pin into the hole two 9 from the cathode end during the assembly of the electrolytic cell, thereby positioning each component to prevent displacement and reduce assembly efficiency.

[0052] As shown in Figures 9 to 11As shown, in this specific embodiment, mounting end face 26 is provided with mounting groove 23 and mounting groove 22. The diameter of mounting groove 23 is smaller than that of mounting groove 22. Mounting groove 23 is used to place the anode electrode 4, and mounting groove 22 is used to place the diaphragm 5. To facilitate the flow of oxygen, hydrogen, and alkaline water, mounting end face 26 is provided with oxygen guide groove 21 and water guide groove 18. Oxygen guide groove 21 connects the inner ring of the conductive electrode plate 3 to an upper flow channel hole 14, and water guide groove 18 connects the inner ring of the conductive electrode plate 3 to a lower flow channel hole 14. In a single-chamber electrolytic cell... In the middle, the two end plates 1 are pressed tightly on the sealing ring 6. The sealing ring 6 is relatively thin and will have elastic deformation, which will cause bulging and easily block the oxygen guide groove 21 and the water guide groove 18. To solve this technical problem, two anti-blocking grooves 15 are provided on the mounting end face 26. The two anti-blocking grooves 15 are respectively connected to the oxygen guide groove 21 and the water guide groove 18, and a support plate is provided in the anti-blocking groove 15. The depth of the anti-blocking groove 15 is less than the depth of the oxygen guide groove 21 or the water guide groove 18. In this specific embodiment, the support plate is made of stainless steel and spans the hydrogen guide groove 16 and the water guide groove 18. Specific Implementation Method 3

[0054] like Figure 12 As shown, this specific embodiment provides an alkaline water electrolyzer, including an anode electrode 4 and a cathode electrode 7. A diaphragm 5 and a sealing ring 6 are also provided between the anode electrode 4 and the cathode electrode 7. It also includes an alkaline water electrolyzer visualization end plate assembly from embodiment one and an alkaline water electrolyzer visualization end plate assembly from embodiment two. The anode electrode 4, diaphragm 5, sealing ring 6, and cathode electrode 7 are coaxially arranged between the two alkaline water electrolyzer visualization end plate assemblies. The sealing ring 6 has holes at positions corresponding to the flow channel holes 14. In this specific embodiment, the conductive electrode plate 3 in embodiment one is connected to the negative terminal of the power supply to form a cathode end plate assembly, while in embodiment two… The conductive electrode plate 3 is connected to the positive terminal of the power supply to form the anode plate assembly. The anode electrode 4 is set in the mounting groove 23 of the conductive electrode plate 3 in the second embodiment (i.e., the anode plate assembly). The cathode electrode 7 is close to the conductive electrode plate 3 in the first embodiment (i.e., the cathode plate assembly). In the end plate 1 of the cathode plate assembly, the upper two holes 9 are connected to the hydrogen pipe and the oxygen pipe, respectively, and the lower two holes 9 are connected to the water inlet pipe and the water outlet pipe, respectively. For easy connection, the four holes 9 are stepped holes. The inner wall of the large-diameter hole is also provided with threads for connection with the pipe joint. The mounting holes 8 corresponding to the end plates 1 in the anode plate assembly and the cathode plate assembly are penetrated by tie bolts.

[0055] In the specific embodiment, to realize the shunting of alkaline water and hydrogen and oxygen, the oxygen guide groove 21 on the conductive end plate 3 at the anode end is arranged staggered with the hydrogen guide groove 16 on the conductive end plate 3 at the cathode end, and the water guide groove 18 on the conductive end plate 3 at the anode end is arranged staggered with the water guide groove 18 on the conductive end plate 3 at the cathode end.

[0056] The working process of the electrolytic cell is as follows:

[0057] The alkaline water enters the cell from the water inlet pipe, passes through the hole two 9 on the cathode end plate assembly, the water guide groove 18 on the conductive end plate 3 at the cathode end, enters the vicinity of the cathode electrode 7, and continues to pass through the sealing ring 6, the diaphragm 5, the hole on the anode end conductive end plate 3, and the water guide groove 18 on the anode end conductive end plate 3 to enter the vicinity of the anode electrode. After the power is turned on, the cathode generates hydrogen by reduction reaction, and the anode electrode generates oxygen by oxidation reaction. The hydrogen enters the hole two 9 on the end plate 1 at the cathode end through the hydrogen guide groove 16 on the conductive end plate 3 at the cathode end and the flow channel hole 14, and enters the hydrogen pipe. The oxygen enters the hole two 9 on the end plate 1 at the anode end through the oxygen guide groove 21 on the conductive end plate 3 at the anode end and the flow channel hole 14, and enters the oxygen pipe.

[0058] From the above specific embodiment, the utility model has the following beneficial effects:

[0059] 1. The end plate 1 is made of transparent and non-conductive material, and under the action of the conductive end plate 3, it can replace the metal end plate 1 in the prior art. On the one hand, it realizes visualization, so that the operator can see the changes of the flow field and the electrode from the end of the electrolytic cell. On the other hand, the use of non-conductive material can also avoid the generation of stray current, bypass current and parasitic current, thereby avoiding energy loss. By providing an acceleration groove 20 on the end plate 1, a buffer cavity is formed. Oxygen, hydrogen or alkaline water is diffused into the acceleration groove 20 before entering the hole, the cross-sectional area is increased, and the flow rate is reduced, which is convenient for observing the flow field.

[0060] 2. The sealing gasket 2 can enhance the sealing between the end plate 1 and the conductive end plate 3, and avoid leakage;

[0061] 3. The multiple sealing grooves of the sealing groove one can form multiple sealing lines (similar to "labyrinth seal"). By increasing the complexity and resistance of the leakage path, the fluid leakage risk is significantly reduced.

[0062] 4. The sealing groove group two 19 can enhance the sealing effect of the end plate assembly on the sealing ring 6 in the electrolytic cell.

[0063] 5. The boss 10 and the protrusion 11 can support the electrode and the diaphragm 5, optimize the current distribution and current collection, thereby replacing the support net, eliminating the need to arrange the support net near the end plate 1 of the electrolytic cell, and simplifying the structure of the electrolytic cell.

[0064] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An alkaline water electrolyzer visualizing end plate assembly, characterized in that, The application relates to an electrode plate, which comprises a coaxially arranged end plate (1) and a conductive electrode plate (3), the end plate (1) is made of transparent and non-conductive material, the conductive electrode plate (3) is in a ring structure, and a conductive plate (12) is arranged on the outer peripheral surface of the conductive electrode plate (3) and used for being connected with a power supply.

2. The alkaline water electrolyzer visualizing end plate assembly of claim 1, wherein, The end plate (1) and the conductive electrode plate (3) are further provided with a sealing gasket (2), the conductive electrode plate (3) comprises an installation end surface three (25) which is close to the end plate (1), the end plate (1) comprises an installation end surface two (24) which is close to the conductive electrode plate (3), the installation end surface three (25) and the installation end surface two (24) are provided with a sealing groove group one (13) at corresponding positions, the sealing groove group one (13) comprises a plurality of sealing grooves, the sealing gasket (2) is arranged between the installation end surface two (24) and the installation end surface three (25), the conductive electrode plate (3) comprises an installation end surface one (26) which is away from the end plate (1), and the installation end surface one (26) is provided with a sealing groove group two (19), the sealing groove group two (19) comprises a plurality of sealing grooves, and the sealing groove group two (19) is oppositely arranged with the sealing groove group one (13).

3. The alkaline water electrolyzer visualizing end plate assembly of claim 2, wherein, Four flow channel holes (14) are arranged on the conductive electrode plate (3), the flow channel holes (14) are all through holes, the axial direction of the flow channel holes (14) is parallel to the axial direction of the conductive electrode plate (3), four hole twos (9) are arranged on the end plate (1), the axial direction of the hole twos (9) is parallel to the axial direction of the end plate (1), the four hole twos (9) on the end plate (1) correspond to the four flow channel holes (14) on the conductive electrode plate (3) one by one, the four hole twos (9) on the end plate (1) are through holes and are respectively used for the flow of alkaline water, oxygen and hydrogen, and the sealing gasket (2) is provided with a relief hole at a position corresponding to the hole two (9).

4. The alkaline water electrolyzer visualizing end plate assembly of claim 3, wherein, The installation end surface one (26) is provided with a hydrogen guiding groove (16) and a water guiding groove (18), the hydrogen guiding groove (16) communicates the inner ring of the conductive electrode plate (3) with one of the flow channel holes (14) at the upper portion, the water guiding groove (18) communicates the inner ring of the conductive electrode plate (3) with one of the flow channel holes (14) at the lower portion, the installation end surface one (26) is provided with two anti-blocking grooves (15), the two anti-blocking grooves (15) respectively communicate with the hydrogen guiding groove (16) and the water guiding groove (18), and the anti-blocking grooves (15) are provided with supporting plates, and the depth of the anti-blocking grooves (15) is smaller than that of the hydrogen guiding groove (16) or the water guiding groove (18).

5. The alkaline water electrolyzer visualizing end plate assembly of claim 4, wherein, The installation end surface two (24) is provided with four acceleration grooves (20), and the acceleration grooves (20) communicate with the corresponding hole twos (9).

6. The alkaline water electrolyzer visualizing end plate assembly of claim 2, wherein, Four flow channel holes (14) are arranged on the conductive electrode plate (3), the flow channel holes (14) are all through holes, the axial direction of the flow channel holes (14) is parallel to the axial direction of the conductive electrode plate (3), four hole twos (9) are arranged on the end plate (1), the axial direction of the hole twos (9) is parallel to the axial direction of the end plate (1), the four hole twos (9) on the end plate (1) correspond to the four flow channel holes (14) on the conductive electrode plate (3) one by one, the four hole twos (9) on the end plate (1) are blind holes and are respectively used for mounting positioning pins during assembly, and the sealing gasket (2) is provided with a relief hole at a position corresponding to the hole two (9).

7. The alkaline water electrolyzer visualizing end plate assembly of claim 6, wherein, The mounting end face one (26) is provided with a mounting groove one (23) and a mounting groove two (22), the diameter of the mounting groove one (23) is smaller than that of the mounting groove two (22), the mounting groove one (23) is used for placing an anode electrode, and the mounting groove two (22) is used for placing a diaphragm, the mounting end face one (26) is provided with an oxygen guide groove (21) and a water guide groove (18), the oxygen guide groove (21) communicates the inner ring of the conductive electrode plate (3) with one of the upper flow channel holes (14), the water guide groove (18) communicates the inner ring of the conductive electrode plate (3) with one of the lower flow channel holes (14), the mounting end face one (26) is provided with two anti-blocking grooves (15), the two anti-blocking grooves (15) respectively communicate with the oxygen guide groove (21) and the water guide groove (18), and a support plate is arranged in the anti-blocking groove (15), and the depth of the anti-blocking groove (15) is smaller than that of the oxygen guide groove (21) or the water guide groove (18).

8. The alkaline water electrolyzer visualizing end plate assembly of claim 2, wherein, The mounting end face two (24) is provided with a boss (10), the end face of the boss (10) is provided with a plurality of protrusions (11), the boss (10) is located in the inner ring of the conductive electrode plate (3), the protrusions (11) are in a cylindrical structure, or the protrusions (11) are in a square structure, or the protrusions (11) are in a conical structure.

9. The alkaline water electrolyzer visualizing end plate assembly of claim 8, wherein, The end plate (1) is provided with a mounting hole (8), and the axial direction of the mounting hole (8) is parallel to the axial direction of the end plate (1).

10. An alkaline water electrolyzer comprising an anode electrode (4) and a cathode electrode (7), a diaphragm (5) and a sealing ring (6) being provided between the anode electrode (4) and the cathode electrode (7), characterized in that, The end plate (1) is provided with a mounting hole (8), and the axial direction of the mounting hole (8) is parallel to the axial direction of the end plate (1). Two alkaline water electrolysis tank visual end plate assemblies as claimed in claim 2 are further included, the anode electrode (4), the diaphragm (5), the sealing ring (6) and the cathode electrode (7) are coaxially arranged between the two alkaline water electrolysis tank visual end plate assemblies, the conductive electrode plate (3) close to the anode electrode (4) is used for connecting a positive electrode of a power supply, the conductive electrode plate (3) close to the cathode electrode (7) is used for connecting a negative electrode of the power supply, and a tension bolt penetrates between the two alkaline water electrolysis tank visual end plate assemblies.

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