阅读说明：本技术 水冷式电解槽 (Water-cooled electrolytic cell ) 是由 朱艳冰 王杰鹏 张晓辉 杨金彭 焦文强 岳飞飞 杨泽鹏 郜鑫 魏灿 于 2021-07-29 设计创作，主要内容包括：本发明公开了一种水冷式电解槽,包括：阴极端压板、阳极端压板、两个绝缘垫片和多根拉杆,阴极端压板的下端或阳极端压板的下端设置有至少一个通孔,阴极端压板的上端或阳极端压板的上端设置有至少一个通孔；至少一个电解组件,夹设在阴极端压板和阳极端压板之间,电解组件具有阴极反应腔和阳极反应腔,阴极电解液进液管、阴极反应腔和氢气出气管相连通,阳极电解液进液管、阳极反应腔和氧气出气管相连通；至少两个极板,极板设置在电解组件的端部,每个极板中均设置有冷却水道；拉杆能穿设经过阴极端压板和阳极端压板,并将阴极端压板、阳极端压板、至少一个电解组件、至少两个极板和两个绝缘垫片拉紧后形成一个整体。本发明能回收电解过程余热。(The invention discloses a water-cooled electrolytic cell, comprising: the device comprises a cathode end pressing plate, an anode end pressing plate, two insulating gaskets and a plurality of pull rods, wherein at least one through hole is formed in the lower end of the cathode end pressing plate or the lower end of the anode end pressing plate, and at least one through hole is formed in the upper end of the cathode end pressing plate or the upper end of the anode end pressing plate; the electrolytic component is provided with a cathode reaction cavity and an anode reaction cavity, the cathode electrolyte inlet pipe and the cathode reaction cavity are communicated with the hydrogen outlet pipe, and the anode electrolyte inlet pipe and the anode reaction cavity are communicated with the oxygen outlet pipe; the polar plates are arranged at the end parts of the electrolytic assembly, and each polar plate is provided with a cooling water channel; the pull rod can penetrate through the cathode end pressing plate and the anode end pressing plate, and the cathode end pressing plate, the anode end pressing plate, the at least one electrolysis assembly, the at least two polar plates and the two insulating gaskets are tensioned to form a whole. The invention can recover the waste heat in the electrolysis process.)

1. A water-cooled electrolytic cell, comprising:

a cathode end platen;

the lower end of the cathode end pressing plate or the lower end of the anode end pressing plate is provided with at least one through hole in a plurality of through holes which are respectively communicated with the anolyte liquid inlet pipe, the catholyte liquid inlet pipe and the cooling water inlet pipe, and the upper end of the cathode end pressing plate or the upper end of the anode end pressing plate is provided with at least one through hole in a plurality of through holes which are respectively communicated with the hydrogen gas outlet pipe, the oxygen gas outlet pipe and the cooling water outlet pipe;

the electrolytic component is clamped between the cathode end pressing plate and the anode end pressing plate and is provided with a cathode reaction cavity and an anode reaction cavity, the cathode electrolyte inlet pipe and the cathode reaction cavity are communicated with the hydrogen gas outlet pipe, and the anode electrolyte inlet pipe and the anode reaction cavity are communicated with the oxygen gas outlet pipe;

the polar plates are arranged at the end parts of the electrolytic assembly, a cooling water channel is arranged in each polar plate, and the cooling water inlet pipe, the cooling water channel and the cooling water outlet pipe are communicated;

the two insulating gaskets are clamped between the polar plate positioned at the end part of the at least one electrolysis assembly and the cathode end pressing plate, and the other insulating gasket is clamped between the polar plate positioned at the other end part of the at least one electrolysis assembly and the anode end pressing plate;

the pull rods can penetrate through the cathode end pressing plate and the anode end pressing plate and tension the cathode end pressing plate, the anode end pressing plate, the at least one electrolysis assembly, the at least two polar plates and the two insulating gaskets to form a whole.

2. The water-cooled electrolyzer of claim 1, wherein the electrolysis assembly comprises:

a cathode sealing gasket having a cathode through hole in the center thereof for mounting a cathode electrode;

an anode sealing gasket, the center of which is provided with an anode through hole for installing an anode electrode, the lower ends of the polar plate, the cathode sealing gasket and the anode sealing gasket are all provided with an anode electrolyte inlet hole, a cathode electrolyte inlet hole and a cooling water inlet hole which are respectively communicated with an anode electrolyte inlet pipe, a cathode electrolyte inlet pipe and a cooling water inlet pipe, and the upper end of the polar plate, the upper end of the cathode sealing gasket and the upper end of the anode sealing gasket are all provided with a hydrogen outlet hole, an oxygen outlet hole and a cooling water outlet hole which are respectively communicated with a hydrogen outlet pipe, an oxygen outlet pipe and a cooling water outlet pipe;

a cathode electrolyte inlet groove and a hydrogen outlet groove which are used for communicating the cathode through hole with the cathode electrolyte inlet hole and the hydrogen outlet hole respectively are formed in the cathode sealing gasket along the radial direction of the cathode sealing gasket, and an anode electrolyte inlet groove and an oxygen outlet groove which are used for communicating the anode through hole with the anode electrolyte inlet hole and the oxygen outlet hole respectively are formed in the anode sealing gasket along the radial direction of the anode sealing gasket;

the diaphragm is clamped between the cathode sealing gasket and the anode sealing gasket, the cathode through hole and the diaphragm and the polar plate which are respectively positioned at two sides of the cathode sealing gasket are jointly surrounded to form the cathode reaction cavity, and the anode through hole and the diaphragm and the polar plate which are respectively positioned at two sides of the anode sealing gasket are jointly surrounded to form the anode reaction cavity.

3. The water-cooled electrolytic cell according to claim 2,

the cathode sealing gasket and the anode sealing gasket are made of any one high polymer material of polyethylene, polypropylene, polytetrafluoroethylene, polyether ether ketone, polysulfone, modified polytetrafluoroethylene and modified polyether ether ketone;

and/or

The cathode electrode and the anode electrode respectively comprise at least one layer of electrode substrate made of conductive materials, and each layer of electrode substrate is any one of a stainless steel mesh, a nickel mesh, foamed nickel, a titanium mesh, a titanium felt, a porous titanium plate, carbon cloth, carbon paper and a carbon felt;

and/or

The diaphragm is any one of an asbestos diaphragm, a non-asbestos diaphragm, an organic composite diaphragm, an inorganic composite diaphragm, a proton exchange membrane and an anion exchange membrane.

4. The water-cooled electrolytic cell according to claim 3, wherein the electrode substrate is further coated with a layer of catalyst, and the catalyst is coated on the electrode substrate by any one of thermal spraying, high temperature sintering, electrodeposition and vacuum evaporation.

5. The water-cooled electrolytic cell according to claim 2, wherein each of the plates has a cathode side and an anode side, annular outer seal lines are provided on the cathode side and the anode side, respectively, in a circumferential direction of the plate, a hydrogen side inner sealing line which can seal the cathode through hole, the cathode electrolyte inlet hole and the hydrogen outlet hole into a whole is arranged on the cathode side, an oxygen side inner sealing line which can seal the anode through hole, the anolyte liquid inlet hole and the oxygen gas outlet hole into a whole is arranged on the anode side, annular inner sealing lines are arranged at other opening positions on the cathode side and the anode side along the circumferential direction of the cathode side and the anode side, and the outer seal line encloses the hydrogen-side inner seal line and the annular inner seal line within their sealing ranges or the outer seal line encloses the oxygen-side inner seal line and the annular inner seal line within their sealing ranges.

6. The water-cooled electrolytic cell according to claim 5,

the outer sealing line, the hydrogen-side inner sealing line, the oxygen-side inner sealing line and the annular inner sealing line are convex lines protruding outwards, and the cross section of each convex line is in any one of a triangular shape, a trapezoidal shape and a square shape;

and/or

Each pole plate is made of any one of stainless steel, carbon steel, titanium and nickel.

7. The water-cooled electrolytic cell according to claim 2, wherein the cooling water passage in each of the plates is provided in correspondence with a position of the cathode through-hole or the anode through-hole, and an area ratio of the cooling water passage to the cathode through-hole or the anode through-hole is 1/3 to 1/2.

8. The water-cooled electrolytic cell according to claim 7, wherein the height of the cooling water channel in the axial direction of the plate is 1/3 to 2/3 times the thickness of the plate, and the cross-sectional width of the cooling water channel is 2 to 5 times the height of the cooling water channel.

9. The water-cooled electrolytic cell according to claim 2, further comprising a drain pipe disposed on the cathode end pressing plate or the anode end pressing plate, the drain pipe being in communication with the anolyte inlet hole or the catholyte inlet hole.

10. The water-cooled electrolytic cell according to any one of claims 1 to 9, wherein the number of the anolyte inlet pipe, the catholyte inlet pipe, the hydrogen outlet pipe, and the oxygen outlet pipe is plural.

Technical Field

The invention relates to the technical field of water electrolysis hydrogen production equipment, in particular to a water-cooled electrolytic cell.

Background

The hydrogen energy storage is based on the technical principle of hydrogen production by water electrolysis, and utilizes electric energy to prepare hydrogen, so that the electric energy is converted into hydrogen energy to be stored, and then the hydrogen energy is supplied to users such as fuel cells and the like on specific occasions to realize conversion, storage and reutilization of surplus electric energy. The hydrogen energy storage technology is considered to be an effective way for solving the problem of renewable energy consumption, but due to the fact that energy consumption is high in the water electrolysis process, hydrogen production by renewable energy still has the problems of high cost and poor economy at present.

The water-cooled electrolytic cell can generate a large amount of waste heat along with the operation process, the prior industrial alkaline and pure water-cooled electrolytic cells take out heat through the flowing of electrolyte, high-temperature electrolyte flows out of the water-cooled electrolytic cell in a gas-liquid mixture form, a gas-liquid processor is cooled by cooling water, and the electrolyte cooled to a certain temperature circularly enters the water-cooled electrolytic cell for continuous use. The control method has the problems of large temperature fluctuation range and slow temperature regulation response of the water-cooled electrolytic cell, is not favorable for stable and efficient operation of the water-cooled electrolytic cell, and the cooling water outlet temperature of the gas-liquid processor is lower, so that the waste heat generated in the electrolytic process can not be recycled, thereby reducing the energy utilization efficiency of the whole process of electrolytic hydrogen production.

Disclosure of Invention

The invention aims to provide a water-cooled electrolytic cell, which is used for solving the problems of high energy consumption, high cost, large temperature fluctuation range of the water-cooled electrolytic cell, slow temperature regulation response, low waste heat recovery efficiency in the electrolytic process and the like in the prior art.

The above object of the present invention can be achieved by the following technical solutions:

the invention provides a water-cooled electrolytic cell, comprising: a cathode end platen; the lower end of the cathode end pressing plate or the lower end of the anode end pressing plate is provided with at least one through hole in a plurality of through holes which are respectively communicated with the anolyte liquid inlet pipe, the catholyte liquid inlet pipe and the cooling water inlet pipe, and the upper end of the cathode end pressing plate or the upper end of the anode end pressing plate is provided with at least one through hole in a plurality of through holes which are respectively communicated with the hydrogen gas outlet pipe, the oxygen gas outlet pipe and the cooling water outlet pipe; the electrolytic component is clamped between the cathode end pressing plate and the anode end pressing plate and is provided with a cathode reaction cavity and an anode reaction cavity, the cathode electrolyte inlet pipe and the cathode reaction cavity are communicated with the hydrogen gas outlet pipe, and the anode electrolyte inlet pipe and the anode reaction cavity are communicated with the oxygen gas outlet pipe; the polar plates are arranged at the end parts of the electrolytic assembly, a cooling water channel is arranged in each polar plate, and the cooling water inlet pipe, the cooling water channel and the cooling water outlet pipe are communicated; the two insulating gaskets are clamped between the polar plate positioned at the end part of the at least one electrolysis assembly and the cathode end pressing plate, and the other insulating gasket is clamped between the polar plate positioned at the other end part of the at least one electrolysis assembly and the anode end pressing plate; the pull rods can penetrate through the cathode end pressing plate and the anode end pressing plate and tension the cathode end pressing plate, the anode end pressing plate, the at least one electrolysis assembly, the at least two polar plates and the two insulating gaskets to form a whole.

Preferably, wherein the electrolytic assembly comprises: a cathode sealing gasket having a cathode through hole in the center thereof for mounting a cathode electrode; an anode sealing gasket, the center of which is provided with an anode through hole for installing an anode electrode, the lower ends of the polar plate, the cathode sealing gasket and the anode sealing gasket are all provided with an anode electrolyte inlet hole, a cathode electrolyte inlet hole and a cooling water inlet hole which are respectively communicated with an anode electrolyte inlet pipe, a cathode electrolyte inlet pipe and a cooling water inlet pipe, and the upper end of the polar plate, the upper end of the cathode sealing gasket and the upper end of the anode sealing gasket are all provided with a hydrogen outlet hole, an oxygen outlet hole and a cooling water outlet hole which are respectively communicated with a hydrogen outlet pipe, an oxygen outlet pipe and a cooling water outlet pipe; a cathode electrolyte inlet groove and a hydrogen outlet groove which are used for communicating the cathode through hole with the cathode electrolyte inlet hole and the hydrogen outlet hole respectively are formed in the cathode sealing gasket along the radial direction of the cathode sealing gasket, and an anode electrolyte inlet groove and an oxygen outlet groove which are used for communicating the anode through hole with the anode electrolyte inlet hole and the oxygen outlet hole respectively are formed in the anode sealing gasket along the radial direction of the anode sealing gasket; the diaphragm is clamped between the cathode sealing gasket and the anode sealing gasket, the cathode through hole and the diaphragm and the polar plate which are respectively positioned at two sides of the cathode sealing gasket are jointly surrounded to form the cathode reaction cavity, and the anode through hole and the diaphragm and the polar plate which are respectively positioned at two sides of the anode sealing gasket are jointly surrounded to form the anode reaction cavity.

Preferably, the cathode sealing gasket and the anode sealing gasket are made of any one high molecular polymer material of polyethylene, polypropylene, polytetrafluoroethylene, polyether ether ketone, polysulfone, modified polytetrafluoroethylene and modified polyether ether ketone.

Preferably, the cathode electrode and the anode electrode each include at least one layer of electrode substrate made of a conductive material, and each layer of electrode substrate is any one of a stainless steel mesh, a nickel mesh, foamed nickel, a titanium mesh, a titanium felt, a porous titanium plate, carbon cloth, carbon paper, and a carbon felt.

Preferably, the diaphragm is any one of an asbestos diaphragm, a non-asbestos diaphragm, an organic composite diaphragm, an inorganic composite diaphragm, a proton exchange membrane and an anion exchange membrane.

Preferably, the electrode substrate is further coated with a layer of catalyst, and the catalyst is coated on the electrode substrate by any one of thermal spraying, high-temperature sintering, electrodeposition and vacuum evaporation.

Preferably, each of the pole plates has a cathode side and an anode side, and annular outer seal lines are respectively arranged on the cathode side and the anode side along the circumferential direction of the pole plate, a hydrogen side inner sealing line which can seal the cathode through hole, the cathode electrolyte inlet hole and the hydrogen outlet hole into a whole is arranged on the cathode side, an oxygen side inner sealing line which can seal the anode through hole, the anolyte liquid inlet hole and the oxygen gas outlet hole into a whole is arranged on the anode side, annular inner sealing lines are arranged at other opening positions on the cathode side and the anode side along the circumferential direction of the cathode side and the anode side, and the outer seal line encloses the hydrogen-side inner seal line and the annular inner seal line within their sealing ranges or the outer seal line encloses the oxygen-side inner seal line and the annular inner seal line within their sealing ranges.

Preferably, the outer seal line, the hydrogen-side inner seal line, the oxygen-side inner seal line, and the annular inner seal line are convex lines protruding outward, and the cross-sectional shape of the convex lines is any one of a triangle, a trapezoid, and a square.

Preferably, each of the pole plates is made of any one of stainless steel, carbon steel, titanium and nickel.

Preferably, the coolant passage in each of the plates is provided corresponding to a position of the cathode through-hole or the anode through-hole, and an area ratio of the coolant passage to the cathode through-hole or the anode through-hole is 1/3 to 1/2.

Preferably, the height of the cooling water channel along the axial direction of the pole plate is 1/3-2/3 of the thickness of the pole plate, and the section width of the cooling water channel is 2-5 times of the height of the cooling water channel.

Preferably, the device also comprises a drain pipe arranged on the cathode end pressing plate or the anode end pressing plate, wherein the drain pipe is communicated with the anolyte liquid inlet hole or the catholyte liquid inlet hole.

Preferably, the number of the anolyte liquid inlet pipe, the catholyte liquid inlet pipe, the hydrogen gas outlet pipe and the oxygen gas outlet pipe is multiple.

The invention has at least the following characteristics and advantages:

the water-cooled electrolytic cell can realize high-precision control and quick adjustment of the temperature of the water-cooled electrolytic cell, thereby realizing the recovery of waste heat in the electrolytic process.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of the structure of a water-cooled electrolytic cell according to the present invention;

FIG. 2 is an assembled view of the water-cooled electrolytic cell of the present invention;

FIG. 3 is a schematic diagram of the cathode side of the plate of the present invention;

FIG. 4 is a schematic diagram of the anode side of the plate of the present invention;

FIG. 5 is a schematic structural diagram of the cooling water flow channel inside the polar plate according to the present invention;

FIG. 6 is a schematic structural diagram of the cooling water flow channel inside the polar plate according to the present invention;

FIG. 7 is a schematic structural view of a cathode gasket of the present invention;

FIG. 8 is a schematic structural diagram of an anode gasket seal of the present invention.

Reference numerals and description:

100. a water-cooled electrolytic cell; 1. a cathode end platen; 2. an anode end pressing plate; 3. a polar plate; 4. a diaphragm; 5. a cathode sealing gasket; 6. an anode sealing gasket; 7. a cathode electrode; 8. an anode electrode; 9. a pull rod; 10. fastening a nut; 11. an insulating spacer; 12. a cathode electrolyte inlet pipe; 13. an anolyte feed pipe; 14. a hydrogen outlet pipe; 15. an oxygen outlet pipe; 16. a cooling water inlet pipe; 17. a cooling water outlet pipe; 18. a blow-off pipe; 31. a catholyte inlet port; 32. an anolyte feed aperture; 33. a hydrogen gas outlet; 34. an oxygen outlet hole; 35. a cooling water inlet hole; 36. a cooling water outlet hole; 37. a hydrogen side inner seal line; 38. an annular inner seal line; 39. an outer seal line; 40. an oxygen side inner seal line; 41. a cooling water channel; 57. a catholyte inlet groove; 58. a hydrogen gas outlet groove; 67. an anolyte liquid inlet groove; 68. and an oxygen outlet groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a water-cooled electrolytic cell 100, please refer to fig. 1 to 8, which comprises a cathode end pressing plate 1, an anode end pressing plate 2, at least one electrolytic component, at least two polar plates 3, two insulating gaskets 11 and a plurality of pull rods 9.

Specifically, the lower end of the cathode end pressing plate 1 or the lower end of the anode end pressing plate 2 is provided with at least one through hole of a plurality of through holes respectively used for being communicated with an anolyte liquid inlet pipe 13, a catholyte liquid inlet pipe 12 and a cooling water inlet pipe 16, and the upper end of the cathode end pressing plate 1 or the upper end of the anode end pressing plate 2 is provided with at least one through hole of a plurality of through holes respectively used for being communicated with a hydrogen gas outlet pipe 14, an oxygen gas outlet pipe 15 and a cooling water outlet pipe 17; at least one electrolytic component is clamped between the cathode end pressing plate 1 and the anode end pressing plate 2, the electrolytic component is provided with a cathode reaction cavity and an anode reaction cavity, the cathode electrolyte inlet pipe 12 and the cathode reaction cavity are communicated with the hydrogen outlet pipe 14, and the anode electrolyte inlet pipe 13 and the anode reaction cavity are communicated with the oxygen outlet pipe 15; the polar plates 3 are arranged at the end parts of the electrolytic assembly, each polar plate 3 is provided with a cooling water channel 41, and the cooling water inlet pipe 16, the cooling water channels 41 and the cooling water outlet pipe 17 are communicated; one insulating gasket 11 is clamped between the polar plate 3 and the cathode end pressing plate 1 which are positioned at the end part of at least one electrolytic assembly, and the other insulating gasket 11 is clamped between the polar plate 3 and the anode end pressing plate 2 which are positioned at the other end part of at least one electrolytic assembly (namely, after the at least one electrolytic assembly and the plurality of polar plates 3 are assembled into a whole, one insulating gasket 11 is respectively arranged at two ends of the whole); the pull rod 9 can penetrate through the cathode end pressing plate 1 and the anode end pressing plate 2, and the cathode end pressing plate 1, the anode end pressing plate 2, the at least one electrolysis assembly, the at least two polar plates 3 and the two insulating gaskets 11 are tensioned to form a whole.

The water-cooled electrolytic cell 100 of the present invention can realize high precision control and rapid regulation of the temperature of the electrolytic cell, thereby realizing recovery of waste heat in the electrolytic process.

It should be understood by those skilled in the art that the catholyte inlet pipe 12 and the anolyte inlet pipe 13 may be disposed on the same end press plate (i.e. the cathode end press plate 1 or the anode end press plate 2), or may be disposed on the cathode end press plate 1 and the anode end press plate 2 separately. The hydrogen outlet pipe 14 and the cathode electrolyte inlet pipe 12 can be arranged on different end pressing plates (namely, a cathode end pressing plate 1 or an anode end pressing plate 2) or on the same end pressing plate (namely, the cathode end pressing plate 1 or the anode end pressing plate 2); the oxygen outlet pipe 15 and the anolyte liquid inlet pipe 13 can be arranged on different end pressing plates (namely the cathode end pressing plate 1 or the anode end pressing plate 2) or can be arranged on the same end pressing plate (namely the cathode end pressing plate 1 or the anode end pressing plate 2). The cooling water inlet pipe 16 and the cooling water outlet pipe 17 can be arranged on the same end pressing plate (namely, the cathode end pressing plate 1 or the anode end pressing plate 2), or can be respectively arranged on the two end pressing plates (namely, the cathode end pressing plate 1 and the anode end pressing plate 2).

Further, referring to fig. 1 to 4, 7 and 8, the electrolytic assembly comprises a cathode sealing gasket 5, an anode sealing gasket 6 and a separator 4. Specifically, the center of the cathode sealing gasket 5 is provided with a cathode through hole for installing a cathode electrode 7, the center of the anode sealing gasket 6 is provided with an anode through hole for installing an anode electrode 8 (namely, the cathode sealing gasket 5 and the anode sealing gasket 6 are both circular rings), the lower end of the polar plate 3, the lower end of the cathode sealing gasket 5 and the lower end of the anode sealing gasket 6 are respectively provided with an anolyte liquid inlet hole 32, a catholyte liquid inlet hole 31 and a cooling water inlet hole 35 which are respectively communicated with the anolyte liquid inlet pipe 13, the catholyte liquid inlet pipe 12 and the cooling water inlet pipe 16, the upper ends of the polar plate 3, the cathode sealing gasket 5 and the anode sealing gasket 6 are respectively provided with a hydrogen outlet hole 33, an oxygen outlet hole 34 and a cooling water outlet hole 36 which are respectively communicated with the hydrogen outlet pipe 14, the oxygen outlet pipe 15 and the cooling water outlet pipe 17; a catholyte liquid inlet groove 57 and a hydrogen outlet groove 58 for communicating a cathode through hole with the catholyte liquid inlet hole 31 and the hydrogen outlet hole 33 respectively are formed in the cathode sealing gasket 5 along the radial direction thereof (i.e. the cathode through hole is communicated with the catholyte liquid inlet hole 31 through the catholyte liquid inlet groove 57, and the cathode through hole is communicated with the hydrogen outlet hole 33 through the hydrogen outlet groove 58), an anolyte liquid inlet groove 67 and an oxygen outlet groove 68 for communicating an anolyte liquid inlet hole 32 and the oxygen outlet hole 34 with an anolyte through hole respectively are formed in the anode sealing gasket 6 along the radial direction thereof (i.e. the anode through hole is communicated with the anolyte liquid inlet hole 32 through the anolyte liquid inlet groove 67, and the anode through hole is communicated with the oxygen outlet hole 34 through the oxygen outlet groove 68); the diaphragm 4 is clamped between the cathode sealing gasket 5 and the anode sealing gasket 6, the cathode through hole and the diaphragm 4 and the polar plate 3 which are respectively positioned at two sides of the cathode sealing gasket 5 are jointly surrounded to form a cathode reaction cavity, and the anode through hole and the diaphragm 4 and the polar plate 3 which are respectively positioned at two sides of the anode sealing gasket 6 are jointly surrounded to form an anode reaction cavity.

It should be understood by those skilled in the art that the number of the various holes (except the cooling water inlet hole 35 and the cooling water outlet hole 36) on the pole plate 3, the cathode sealing gasket 5 and the anode sealing gasket 6 may be one or more, and may be specifically adjusted according to the size of the pole plate 3; the same holes on the three components have the same hole diameter and number.

According to the invention, the cooling water inlet pipe 16 and the cooling water inlet hole 35 are arranged at the lower end of each component, and the cooling water outlet pipe 17 and the cooling water outlet hole 36 are arranged at the upper end of each component, so that when the cooling water cooling device is used, cooling water flows into the pole plate 3 from the cooling water inlet hole 35, then flows upwards and flows out of the pole plate 3 from the cooling water outlet hole 36, and the cooling effect is ensured.

In some embodiments, referring to fig. 7 and 8, cathode sealing gasket 5 and anode sealing gasket 6 are made of any one of polyethylene, polypropylene, polytetrafluoroethylene, polyetheretherketone, polysulfone, modified polytetrafluoroethylene and modified polyetheretherketone. In other embodiments, the diaphragm 4 is any one of an asbestos diaphragm, a non-asbestos diaphragm, an organic composite diaphragm, an inorganic composite diaphragm, a proton exchange membrane, and an anion exchange membrane.

In some embodiments, referring to fig. 7 and 8, each of the cathode electrode 7 and the anode electrode 8 includes at least one layer of electrode substrate made of conductive material, each layer of electrode substrate is any one of stainless steel mesh, nickel foam, titanium mesh, titanium felt, porous titanium plate, carbon cloth, carbon paper and carbon felt;

further, referring to fig. 7 and 8, the electrode substrate is further coated with a layer of catalyst, and the catalyst is coated on the electrode substrate by any one of thermal spraying, high-temperature sintering, electrodeposition and vacuum evaporation.

In some embodiments, referring to fig. 3 and 4, each plate 3 has a cathode side and an anode side (i.e., the plate 3 is a metal bipolar plate), annular outer seal lines 39 are respectively disposed on the cathode side and the anode side along the circumferential direction of the plate 3, a hydrogen side inner sealing line 37 capable of sealing the cathode through hole, the cathode electrolyte inlet hole 31 and the hydrogen outlet hole 33 into a whole is arranged on the cathode side, an oxygen side inner sealing line 40 capable of sealing the anode through hole, the anolyte inlet hole 32 and the oxygen outlet hole 34 into a whole is arranged on the anode side, at other locations of the openings on the cathode side and the anode side there are provided annular inner seal lines 38 along their circumference, and the outer seal line 39 encloses the hydrogen-side inner seal line 37 and the annular inner seal line 38 within their sealing ranges, and the outer seal line 39 encloses the oxygen-side inner seal line 40 and the annular inner seal line 38 within their sealing ranges. In some preferred embodiments, each plate 3 is made of any one of stainless steel, carbon steel, titanium, and nickel.

In some embodiments, referring to fig. 3 and 4, the outer seal line 39, the hydrogen-side inner seal line 37, the oxygen-side inner seal line 40, and the annular inner seal line 38 are convex lines protruding outward, and the cross-sectional shape of the convex lines is any one of triangular, trapezoidal, and square. In some preferred embodiments, referring to fig. 3 and 4, the outer sealing line 39 is provided with at least two passes to ensure the sealing effect.

By adopting the design, the sealing lines (namely the outer sealing line 39, the hydrogen side inner sealing line 37, the oxygen side inner sealing line 40 and the annular inner sealing line 38) can be ensured to be embedded into the sealing gaskets (namely the cathode sealing gasket 5 and the anode sealing gasket 6) when the assembled water-cooled electrolytic cell 100 is tensioned, so that the sealing performance of the water-cooled electrolytic cell 100 can be effectively improved, and air leakage and liquid leakage are prevented when the water-cooled electrolytic cell 100 works.

In some embodiments, the pattern, height, width, number, spacing, etc. of the annular inner seal lines 38 on the anode and cathode sides of the plate 3 are the same, as are the pattern, height, width, number, spacing, etc. of the outer seal lines 39 on the anode and cathode sides.

It will be appreciated by those skilled in the art that the number of inner seal lines per group may be more than two, and the number of outer seal lines 39 may be more than two, preferably three, depending on the size of the plate 3. Parameters such as the width and height of the inner seal line and the outer seal line 39 and the distance between the seal lines can be adjusted according to the size of the polar plate 3.

In some embodiments, referring to fig. 5 and 6, the cooling water channels 41 in each plate 3 are disposed corresponding to the positions of the cathode through holes or the anode through holes (i.e., the cooling water channels 41 are mainly distributed in the electrolyzed water reaction generation region, i.e., the region surrounded by the hydrogen-side inner seal line 37 and the oxygen-side inner seal line 40), and the ratio of the area of the cooling water channels 41 to the area of the cathode through holes or the anode through holes is 1/3 to 1/2 (i.e., the ratio of the area of the cooling water channels 41 in the direction parallel to the plate 3 to the area of the electrolyzed water reaction generation region is 1/3 to 1/2). Through the design, the invention can ensure that the water-cooled electrolytic tank 100 has enough heat exchange area, thereby improving the precision and speed of temperature regulation and control of the water-cooled electrolytic tank 100 and simultaneously ensuring that the conductivity of the polar plate 3 is not influenced.

Further, referring to fig. 5 and 6, the height of the cooling water channel 41 in the axial direction of the plate 3 (i.e., the direction perpendicular to the surface of the plate 3 is defined as the height of the cooling water channel 41) is 1/3 to 2/3 times the thickness of the plate 3, and the cross-sectional width of the cooling water channel 41 is 2 to 5 times the height of the cooling water channel 41. Here, the cross-sectional width of the cooling water passage 41 refers to the cross-sectional width of a single water passage, and the height of the cooling water passage 41 refers to the height of the water passage in the axial direction of the plate 3.

It should be understood by those skilled in the art that the cross-sectional shape of the cooling water channel 41 may be square, circular or other shapes, and it is within the scope of the present invention to provide the cooling effect.

According to the invention, cooling water can be directly introduced into the water-cooled electrolytic tank 100 through the design, and the flow of the cooling water is adjusted according to the actually measured temperature of the water-cooled electrolytic tank 100, so that the temperature control precision and the temperature regulation speed of the water-cooled electrolytic tank 100 are improved. When the water-cooled electrolytic cell 100 operates, the outlet water temperature of the cooling water can approach the working temperature of the water-cooled electrolytic cell 100 and reach about 70 ℃ to 80 ℃, so that the requirements of various application scenes on the water temperature are met, the waste heat in the electrolytic process can be recycled, the comprehensive energy utilization efficiency of the whole hydrogen production process is improved, and the water-cooled electrolytic cell can be applied to the field of hydrogen production by renewable energy sources and improves the economy.

In some embodiments, referring to fig. 1 and fig. 2, the apparatus further comprises a sewage draining pipe 18 disposed on the cathode end pressing plate 1 or the anode end pressing plate 2, and the sewage draining pipe 18 is communicated with the anolyte inlet hole 32 or the catholyte inlet hole 31. It should be understood by those skilled in the art that the waste pipe 18 can be connected to either the anolyte inlet port 32 or the catholyte inlet port 31 to discharge contaminants from the apparatus, and it is within the scope of the present invention to provide a waste pipe 18. Of course, in order to facilitate the discharge of the pollutants, in some embodiments, a sewage pump is further included, and the connection manner and the installation position of the sewage pump can be designed and adjusted according to actual requirements, which is not limited herein.

In some embodiments, the number of the anolyte inlet pipe 13, the catholyte inlet pipe 12, the hydrogen outlet pipe 14, and the oxygen outlet pipe 15 is plural.

The method of assembling the water-cooled electrolytic cell 100 of the present invention will be described below to facilitate understanding of the present invention, referring to FIGS. 1 to 8:

firstly, flatly placing a cathode end pressing plate 1, and placing an insulating gasket 11 on the cathode end pressing plate 1;

the polar plate 3 is laid on the insulating gasket 11, and the cathode side of the polar plate 3 faces upwards;

placing a cathode sealing gasket 5 with the same outer diameter on the pole plate 3 (at the moment, the cathode side of the pole plate 3 is in contact with the cathode sealing gasket 5), and embedding the cathode electrode 7 into the cathode sealing gasket 5, namely, installing and accommodating the cathode electrode 7 in the cathode through hole;

placing the separator 4 on the cathode sealing gasket 5;

placing an anode sealing gasket 6 on the diaphragm 4, and embedding an anode electrode 8 into the anode sealing gasket 6, namely installing and accommodating the anode electrode 8 in the anode through hole;

the other plate 3 is placed on the anode sealing gasket 6 with the anode side down and the cathode side up.

The water-cooled electrolytic tank components (namely electrolytic components) with preset quantity are continuously stacked according to the use requirement by repeating the sequence, after the last water-cooled electrolytic tank component is stacked (namely after the assembly is finished), another insulating gasket 11 is placed on the last polar plate 3, then the anode end pressing plate 2 is placed, and the end pressing plates (namely the cathode end pressing plate 1 and the anode end pressing plate 2) are ensured to be aligned with the same gas-liquid pore passages on the insulating gasket 11, the polar plate 3 and the sealing gasket (namely the cathode sealing gasket 5 and the anode sealing gasket 6) (namely the hydrogen outlet pipe 14 on the anode end pressing plate 2 is ensured to be aligned with the hydrogen outlet hole 33 on the polar plate 3, the hydrogen outlet hole 33 on the cathode sealing gasket 5 and the hydrogen outlet hole 33 on the anode sealing gasket 6, the oxygen outlet pipe 15 on the anode end pressing plate 2 is ensured to be aligned with the oxygen outlet hole 34 on the polar plate 3 and the oxygen outlet hole 34 on the cathode sealing gasket 5, The oxygen outlet holes 34 on the anode sealing gasket 6 are aligned; the cooling water outlet pipe 17 on the anode end pressing plate 2 is aligned with the cooling water outlet hole 36 on the polar plate 3, the cooling water outlet hole 36 on the cathode sealing gasket 5 and the cooling water outlet hole 36 on the anode sealing gasket 6). And finally, tensioning end pressing plates (namely a cathode end pressing plate 1 and an anode end pressing plate 2) at two ends of the water-cooled electrolytic cell 100 by using a fastener (namely a pull rod 9) and a fastening nut 10 to finish the assembly of the water-cooled electrolytic cell 100.

During the assembly process, a user can finely adjust the position of the assembly by using the tool to ensure that the gas-liquid channels on the sealing gaskets (namely the cathode sealing gasket 5 and the anode sealing gasket 6) are aligned with the gas-liquid channels of the same type on the polar plate 3. Namely, ensure that: a cathode electrolyte inlet pipe 12 on the cathode end pressing plate 1 is aligned with a cathode electrolyte inlet hole 31 on the polar plate 3, a cathode electrolyte inlet hole 31 on the cathode sealing gasket 5 and a cathode electrolyte inlet hole 31 on the anode sealing gasket 6; an anolyte liquid inlet pipe 13 on the cathode end pressing plate 1 is aligned with an anolyte liquid inlet hole 32 on the polar plate 3, an anolyte liquid inlet hole 32 on the cathode sealing gasket 5 and an anolyte liquid inlet hole 32 on the anode sealing gasket 6; the hydrogen outlet hole 33 on the polar plate 3 is aligned with the hydrogen outlet hole 33 on the cathode sealing gasket 5 and the hydrogen outlet hole 33 on the anode sealing gasket 6; the oxygen outlet holes 34 on the polar plate 3 are aligned with the oxygen outlet holes 34 on the cathode sealing gasket 5 and the oxygen outlet holes 34 on the anode sealing gasket 6; the cooling water inlet pipe 16 on the cathode end pressing plate 1 is aligned with the cooling water inlet hole 35 on the polar plate 3, the cooling water inlet hole 35 on the cathode sealing gasket 5 and the cooling water inlet hole 35 on the anode sealing gasket 6; the cooling water outlet hole 36 on the polar plate 3 is aligned with the cooling water outlet hole 36 on the cathode sealing gasket 5 and the cooling water outlet hole 36 on the anode sealing gasket 6.

Certainly in order to facilitate the gas-liquid pore channel alignment on each component, in some embodiments, the positioning protrusions and the positioning grooves can be arranged on two side surfaces of each component, so that it is ensured that the two matched components can be positioned through the corresponding positioning protrusions and the corresponding positioning grooves, the gas-liquid pore channel alignment on each component is ensured, the assembly time is saved, and the construction efficiency is improved.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.