CN114990594A - Electrode frame for high-voltage electrolysis and high-voltage electrolytic tank - Google Patents
Electrode frame for high-voltage electrolysis and high-voltage electrolytic tank Download PDFInfo
- Publication number
- CN114990594A CN114990594A CN202210783265.8A CN202210783265A CN114990594A CN 114990594 A CN114990594 A CN 114990594A CN 202210783265 A CN202210783265 A CN 202210783265A CN 114990594 A CN114990594 A CN 114990594A
- Authority
- CN
- China
- Prior art keywords
- frame
- anode
- cathode
- hydrogen
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/05—Pressure cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
- C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
- C25B9/21—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms two or more diaphragms
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/60—Constructional parts of cells
- C25B9/63—Holders for electrodes; Positioning of the electrodes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention relates to an electrode frame for high-voltage electrolysis and a high-voltage electrolytic tank, belonging to the technical field of hydrogen production by electrolysis. The electrode frame includes positive pole frame and negative pole frame, positive pole frame and negative pole frame are the same square frame of external diameter size, the division of symmetry has inlet opening and apopore on the positive pole frame, the symmetry is opened on the negative pole frame has the hydrogen hole, the symmetric distribution that corresponds respectively on positive pole frame and the negative pole frame has a plurality of bolt perforation, the frame body two sides of positive pole frame and negative pole frame are equipped with the sealed burr of many rings of V type respectively along the inner edge and the outer fringe of frame body, the sealed burr intermeshing of positive pole frame and negative pole frame involution face. When the anode frame and the cathode frame of the electrode frame are butted, the anode frame and the cathode frame are meshed with each other through the V-shaped sealing convex lines on the inner edge and the outer edge of each electrode frame, and the butted sealing and fastening effects are better.
Description
Technical Field
The invention relates to the technical field of electrolytic hydrogen production equipment, in particular to an electrode frame for high-voltage electrolysis and a high-voltage electrolytic tank.
Background
The hydrogen is an extremely clean and efficient renewable energy source, and under the large environment that carbon emission is reduced to achieve the aim of carbon neutralization, the PEM water electrolysis hydrogen production technology is widely applied to the fields of hydrogen production in a hydrogenation station, hydrogen production by water electrolysis of renewable energy sources such as wind power and the like, energy storage and the like, and is an advanced hydrogen production technology in the world. Hydrogen is continuously recognized and valued, the demand of the market for hydrogen production equipment is continuously increased, the safety index is listed as the most important index of hydrogen energy equipment, and the hydrogen purity and the hydrogen pressure are the second indexes.
At present, the water flow of a water inlet hole of an electrode frame of the existing electrolytic cell has a high water flow speed, and the high-speed water flow easily impacts a local precious metal coating on a membrane electrode to influence the normal work of the electrolytic cell. And after the sealing film of the butt joint surface of the electrode frame is used for a long time, the sealing film at the water inlet and outlet holes or the hydrogen hole is aged and damaged due to the influence of oxygen environment, water flow, air flow scouring and the like, so that a flow channel is blocked, and the normal operation of equipment is influenced.
In addition, due to multiple factors such as the structure and the assembly precision, the existing electrode frame on the market exerts great force on the membrane electrode, the anode frame and the conductive metal layer under the action of high-pressure hydrogen pressure, particularly, a gap at the butt joint of the outer edge of the conductive metal and the inner edge of the anode sealing frame generates great cutting force on the membrane electrode, and once the electrode frame at the inner edge of the anode frame is broken after long-time use, hydrogen and oxygen are mixed easily, so that the explosion risk exists.
Disclosure of Invention
In order to solve the problems in the prior art, the invention designs an electrode frame for high-pressure electrolysis and a high-pressure electrolytic cell, so as to solve the problems that in the prior art, the water flow of a water inlet hole of the electrode frame is too fast, sealing films at a water flow passage and a hydrogen flow passage are aged, damaged and easily blocked, reduce the cutting force of high-pressure hydrogen on the edge of the electrode frame of a membrane electrode, and improve the application safety of the membrane electrode.
The invention firstly discloses an electrode frame for a high-voltage electrolytic tank, which adopts the technical scheme that: the electrode frame comprises an anode frame and a cathode frame, the anode frame and the cathode frame are square frames with the same outer diameter and size, the left and right side frame bodies of the anode frame are symmetrically provided with a water inlet hole and a water outlet hole, the upper and lower side frame bodies are symmetrically provided with hydrogen passing holes, a plurality of water through holes are symmetrically formed on the frame bodies on the left side and the right side of the cathode frame, hydrogen holes are symmetrically formed on the frame bodies on the upper side and the lower side, the positions of the water through holes correspond to the positions of the water through holes and the water through holes on the anode frame, the position of the hydrogen hole corresponds to the position of the hydrogen through hole on the anode frame, the anode frame and the cathode frame are respectively provided with a plurality of bolt through holes in a corresponding symmetric distribution mode, a plurality of circles of V-shaped sealing convex patterns are respectively arranged on two sides of the frame body of the anode frame and the frame body of the cathode frame along the inner edge and the outer edge of the frame body, and when the anode frame and the cathode frame are in butt joint, the sealing convex patterns on the butt joint surfaces of the anode frame and the cathode frame are meshed with each other. The anode frame and the cathode frame are provided with sealing ribs which can be engaged with each other, so that the fastening stability and the sealing property of the anode frame and the cathode frame to the membrane body clamped therebetween can be improved.
Furthermore, the sealing wale at the front surface edge of the anode frame bypasses from the opposite outer sides of the water inlet hole and the water outlet hole, a water flow channel is formed between the water inlet hole and the water outlet hole and the inner edge of the frame body in a downward concave mode, the sealing wale at the front surface edge of the cathode frame bypasses from the opposite outer side of the hydrogen hole, a hydrogen flow channel is formed between the hydrogen hole and the inner edge of the frame body in a downward concave mode, the water flow channel of the anode frame and the hydrogen flow channel of the cathode frame are respectively in a fan shape, multiple rows of flow dividing stems are arranged in the water flow channel of the water inlet hole in a staggered mode. The fan-shaped flow channel can improve the throughput of water or hydrogen and the working efficiency of the electrolytic cell, and the flow distribution stems arranged in a staggered manner are arranged in the water flow channel of the water inlet hole, so that the instantaneous speed of water inlet can be effectively reduced, water flow is uniformly distributed, and the local impact on a membrane electrode is reduced.
Furthermore, cover plates are arranged on the upper sides of the water flow channel of the anode frame and the hydrogen flow channel of the cathode frame, and a plurality of sealing convex patterns are also arranged on the upper surfaces of the cover plates. The cover plate is arranged to cover the water flow channel and the hydrogen flow channel, and the sealing film is directly pressed on the cover plate after being arranged, so that the sealing film is not in direct contact with the water flow channel or the hydrogen flow channel, the impact is reduced, and the channel is prevented from being blocked by breakage.
Further, the positive pole frame corresponds with negative pole frame position and is equipped with a plurality of holding rings that constitute by the cyclic annular V type burr of multichannel respectively, the central point of the holding ring of positive pole frame puts the arch has the locating pin, the central point of the holding ring of negative pole frame puts and is recessed to have the locating hole, positive pole frame and negative pole frame are when being right, and the V type burr intermeshing of the two corresponding holding ring, the locating pin of positive pole frame is inserted and is closed in the locating hole of negative pole frame. The positioning ring is used for ensuring the accuracy of butt joint installation of the anode frame and the cathode frame.
Furthermore, the frame width of the cathode frame is greater than that of the anode frame, and when the cathode frame and the anode frame are combined, the inner edge of the frame of the cathode frame exceeds the inner edge of the frame of the anode frame to form a supporting platform. After the membrane electrode is clamped between the anode frame and the cathode frame, the joint between the anode frame and the anode metal conducting layer is blocked by the supporting platform beyond the inner edge of the cathode frame, so that the hydrogen pressure from the side of the cathode frame cannot generate cutting force on the membrane electrode due to the existence of the joint between the anode frame and the metal conducting layer.
Furthermore, column feet are respectively protruded from two ends of the bottom surface of the cover plate, connecting holes are respectively formed in two sides of the water flow channel of the anode frame and the hydrogen flow channel of the cathode frame, and when the cover plate is covered on the flow channels, the column feet at two ends are respectively inserted into the connecting holes in two sides of the flow channels. The column base and the connecting hole improve the stability of the cover plate connection.
The invention also discloses a high-pressure electrolytic tank, which comprises a plurality of electrolytic chambers formed by the pair of anode frames and the cathode frames, wherein the plurality of electrolytic chambers are vertically stacked in sequence, the pair of anode frames and the cathode frames forming each electrolytic chamber are butted through the front surfaces of the respective frame bodies, the anode frames are arranged on the upper parts of the anode frames and the cathode frames are arranged on the lower parts of the cathode frames, the bottom of each high-pressure electrolytic tank is a cathode end plate, the top of each high-pressure electrolytic tank is an anode end plate, the anode end plate and the cathode end plate are provided with a plurality of bolt through holes corresponding to the electrode frames respectively and are connected and fastened through a plurality of fastening bolts sequentially penetrating through the corresponding bolt through holes, the side surface of each anode end plate is provided with a water injection hole, a water discharge hole and a hydrogen discharge hole, the water injection hole, the water discharge hole and the hydrogen discharge hole are respectively provided with flow channels in the anode end plate, and the positions of the water inlet hole, the water outlet hole and the hydrogen hole of the anode end plate corresponding to the electrode frame are respectively perforated and are respectively connected with the water inlet hole, the water outlet hole and the hydrogen hole of the electrode frame, The water outlet hole is butted with the hydrogen hole.
Further, accompany a membrane electrode between the anode frame of every electrolysis chamber and the negative pole frame, the side pad that goes up of anode frame has the positive pole top seal membrane, has filled up the positive pole bottom seal membrane between downside and the membrane electrode, has filled up the negative pole top seal membrane between the side of going up of negative pole frame and the membrane electrode, and the downside pad has the negative pole bottom seal membrane, be equipped with the positive pole metal level in the framework of anode frame, the outer fringe four sides of positive pole metal level dock with the framework inner edge four sides of anode frame respectively, be equipped with the negative pole metal level in the framework of negative pole frame, the outer fringe four sides of negative pole metal level dock with the framework inner edge four sides of negative pole frame respectively.
Furthermore, an upper insulating plate and an anode electrode plate are sequentially arranged between the lower side face of the anode end plate and the electrolytic chamber, and a lower insulating plate, a cathode electrode plate and a titanium partition plate are sequentially arranged between the upper side face of the cathode end plate and the electrolytic chamber.
Furthermore, a plurality of fastening nuts are connected to the top end of each fastening bolt in a threaded manner on the upper side of the anode end plate, each fastening bolt is sleeved with a spring pad, and the spring pad is located between the fastening nut on the bottommost side and the anode end plate.
Compared with the prior art, the electrode frame for high-voltage electrolysis and the high-voltage electrolysis cell have the advantages that the water flow channel and the hydrogen flow channel of the electrode frame are both arranged in a fan shape, so that the throughput of water flow or hydrogen flow in the electrode frame can be effectively improved, and the working efficiency of the electrolysis cell is improved;
the flow splitting stems which are arranged in a staggered manner are arranged in the water flow channel of the water inlet hole of the anode frame, so that the instantaneous speed of water inlet can be effectively reduced, water flow is uniformly distributed, and local impact on the membrane electrode is reduced;
cover plates are respectively arranged on the water flow passage and the hydrogen flow passage of the electrode frame to cover the water flow passage and the hydrogen flow passage, and the sealing films are directly pressed on the cover plates after being arranged and cannot be contacted with the water flow passage or the hydrogen flow passage, so that the impact is reduced, and the water flow passage is prevented from being blocked by crushing;
the sealing ribs on the inner edge and the outer edge of the anode frame and the cathode frame can be meshed after being butted, so that the fastening effect and the sealing effect of a membrane body between the anode frame and the cathode frame are improved, and meanwhile, the anode frame and the cathode frame are respectively provided with positioning rings with positioning pins and positioning holes, so that the anode frame and the cathode frame can be more accurately stacked and butted;
in addition, the inner diameter of the cathode frame is smaller than that of the anode frame, namely the width of the cathode frame is larger than that of the anode frame, on the basis that the outer diameters of the cathode frame and the anode frame are the same, the inner edge of the cathode frame can exceed the inner edge of the anode frame after the cathode frame and the anode frame are in butt joint to form a supporting platform, and a membrane electrode between the cathode frame and the anode frame is supported at the joint of the anode frame and a metal conducting layer inside the anode frame, so that the shearing force of high-pressure hydrogen on the membrane electrode at the position is avoided, the membrane electrode is prevented from being damaged, the service life of the membrane electrode is effectively prolonged, and the safety of equipment is improved.
Drawings
Fig. 1 is a schematic front view of an anode frame.
Fig. 2 is a schematic structural diagram of the anode frame without a cover plate on the front surface.
Fig. 3 is a schematic diagram of the back structure of the anode frame.
FIG. 4 is a schematic view of a partial enlarged structure of the water flow channel of the water inlet of the anode frame.
Fig. 5 is a schematic view of a coupling structure of the cap plate.
Fig. 6 is a schematic front view of the cathode frame.
Fig. 7 is a schematic structural view of the cathode frame without a cover plate on the front surface.
Fig. 8 is a schematic view of the back structure of the cathode frame.
FIG. 9 is a schematic partial cross-sectional view of the positioning ring when the anode and cathode frames are mounted in a stacked configuration.
FIG. 10 is a schematic view showing a split structure of the electrolytic cell.
FIG. 11 is a schematic view of a cross-sectional structure of an anode frame and a cathode frame when they are mounted in a stacked manner.
FIG. 12 is a schematic view showing the change of water flow rates in the electrolytic cell of the present invention and the conventional electrolytic cell.
FIG. 13 is a schematic view showing the pressure change of the electrolytic cell of the present invention and a conventional electrolytic cell.
FIG. 14 is a schematic view showing the change in voltage between the electrolytic cell of the present invention and a conventional electrolytic cell.
In the figure, 1 anode frame, 2 cathode frame, 3-V type sealing convex line, 4 positioning rings, 5 bolt through holes, 6 cover plates, 7 membrane electrodes, 8 anode end plates, 9 cathode end plates, 10 titanium material separators, 11 water inlet holes, 12 water outlet holes, 13 water flow channels, 14 flow dividing stems, 15 positioning pins, 16 anode upper sealing films, 17 anode lower sealing films, 18 anode metal layers, 19 hydrogen through holes, 21 water through holes, 22 hydrogen holes, 23 hydrogen flow channels, 24 positioning holes, 25 cathode upper sealing films, 26 cathode lower sealing films, 27 cathode metal layers, 28 supporting platforms, 61 column feet, 81 upper insulating plates, 82 anode electrode plates, 91 lower insulating plates, 92 cathode electrode plates, 101 fastening bolts, 102 fastening nuts, 103 spring pads, 104 water injection holes and 105 hydrogen outlet holes.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments. The technical solutions in the embodiments of the present invention are clearly and completely described, and the described embodiments are only some, but not all, of the inventive embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention.
Example 1
As shown in fig. 1 to 9, the present invention discloses an embodiment of an electrode frame for high-voltage electrolysis, in which the electrode frame includes an anode frame 1 and a cathode frame 2, and the anode frame 1 and the cathode frame 2 are square frames with the same outer diameter. The left and right side frames of the anode frame 1 are symmetrically provided with 3 water inlet holes 11 and 3 water outlet holes 12 respectively, and the upper and lower side frames are symmetrically provided with 1 hydrogen passing hole 19 respectively. The left and right frame bodies of the cathode frame 2 are symmetrically provided with 3 water through holes 21 respectively, and the upper and lower frame bodies are symmetrically provided with 1 hydrogen hole 22 respectively. The positions of the water through holes 21 of the cathode frame 2 correspond to the positions of the water through holes 11 and the water through holes 12 on the anode frame 1, and the positions of the hydrogen through holes 22 correspond to the positions of the hydrogen through holes 19 on the anode frame 1. A plurality of bolt through holes 5 are symmetrically distributed on the anode frame 1 and the cathode frame 2 correspondingly respectively, a plurality of circles of V-shaped sealing convex patterns 3 are respectively arranged on two surfaces of the frame body of the anode frame 1 and the cathode frame 2 along the inner edge and the outer edge of the frame body, and when the anode frame 1 and the cathode frame 2 are matched, the V-shaped sealing convex patterns 3 on the inner edge and the outer edge of the matching surface of the anode frame 1 and the matching surface of the cathode frame 2 are meshed with each other respectively.
The sealing convex patterns at the inner edge of the front surface of the frame body of the anode frame 1 bypass the relative outer sides of the 3 water inlet holes 11 and the 3 water outlet holes 12 at the left side and the right side, and a water flow channel 13 is formed between the water inlet holes 11 and the water outlet holes 12 and the inner edge of the frame body in a downward concave mode. The hydrogen passing holes 19 on the upper and lower sides are positioned between the sealing ribs on the inner and outer edges.
The sealing ribs at the inner edge of the front face of the frame body of the cathode frame 2 bypass from the opposite outer sides of the hydrogen holes 22 at the upper and lower sides, a hydrogen flow channel 23 is formed by recessing between the hydrogen holes 22 and the inner edge of the frame body, and the water passing holes 21 at the left and right sides are positioned between the sealing ribs at the inner and outer edges. The water flow channel 13 of the anode frame 1 and the hydrogen flow channel 23 of the cathode frame 2 are respectively in a fan shape, and are respectively provided with a plurality of rows of flow dividing stems 14. The flow dividing stems in the water flow channels at the 3 water inlet holes 11 of the anode frame 1 are arranged in a staggered manner to form a plurality of staggered and communicated water channels.
The water flow channel 13 of the anode frame 1 and the hydrogen flow channel 23 of the cathode frame 2 are respectively provided with a layer of cover plate 6, and the upper surface of the cover plate 6 is also provided with a plurality of sealing convex lines. The two ends of the bottom surface of the cover plate 6 are respectively provided with a raised column base 61, correspondingly, the two sides of the water flow channel 13 of the anode frame 1 and the hydrogen flow channel 23 of the cathode frame 2 are respectively provided with a concave connecting hole, when the cover plate 6 is covered on the flow channel, the column bases 61 at the two ends are respectively inserted into the connecting holes at the two sides of the flow channel, and the column bases and the connecting holes improve the accuracy and the stability of the cover plate connection. After the cover plate 6 is covered on the flow channel, the plate surface is flush with the frame surfaces of the anode frame and the cathode frame, and the sealing convex lines on the cover plate are also flush with the V-shaped sealing convex lines at the inner edge of the frame. The cover plate is arranged to cover the water flow channel and the hydrogen flow channel, the sealing film is directly pressed on the cover plate after being arranged, the sealing film cannot be in direct contact with the water flow channel or the hydrogen flow channel, impact is reduced, and the water flow channel is prevented from being blocked by breakage.
The corresponding positions of the frame bodies of the anode frame 1 and the cathode frame 2 are respectively provided with a plurality of positioning rings 4 consisting of a plurality of annular V-shaped convex lines, the central position of the positioning ring of the anode frame 1 is provided with a positioning pin 15 in a protruding manner, and the central position of the positioning ring of the cathode frame 2 is provided with a positioning hole 24 in a recessed manner. When the anode frame 1 and the cathode frame 2 are aligned, the V-shaped ridges of the corresponding positioning rings 4 are engaged with each other, and the positioning pin 15 of the anode frame 1 is inserted into the positioning hole 24 of the cathode frame 2. The positioning ring 4 is used for ensuring the accuracy of butt joint installation of the anode frame 1 and the cathode frame 2.
The frame width of the cathode frame 2 is larger than that of the anode frame 1, when the two frames are combined, the inner edge of the frame of the cathode frame 2 exceeds the inner edge of the frame of the anode frame 1 to form a supporting platform to shield the joint between the inner edge of the anode frame 1 and the anode metal conductive layer, so that the hydrogen pressure from the cathode frame side can not generate cutting force on the membrane electrode due to the existence of the joint between the anode frame and the metal conductive layer
Example 2
As shown in fig. 10 and 11, the present invention discloses a high-voltage electrolytic tank, in this embodiment, the high-voltage electrolytic tank includes a plurality of electrolytic chambers formed by a pair of anode frames 1 and cathode frames 2 described in embodiment 1, which are vertically stacked in sequence, the pair of anode frames 1 and cathode frames 2 forming each electrolytic chamber are butted through the front surfaces of the respective frames, the anode frame 1 is on the top, the cathode frame 2 is on the bottom, and only the schematic structural diagram of 1 electrolytic chamber is shown in fig. 9. The bottom of the high-pressure electrolytic tank is a cathode end plate 9, the top is an anode end plate 8, a plurality of bolt perforations are respectively arranged on the anode end plate 8 and the cathode end plate 9 corresponding to an electrode frame, and the bolts pass through the corresponding bolt perforations in sequence through a plurality of fastening bolts 101 to be connected and fastened, a water injection hole 104, a water discharge hole and a hydrogen discharge hole 105 are arranged on the side surface of the anode end plate 8, runners are respectively arranged in the anode end plate 8 through the water injection hole 104, the water discharge hole and the hydrogen discharge hole 105, the runners are arranged at the bottom surface of the anode end plate 8 corresponding to the positions of a water inlet hole, a water outlet hole and a hydrogen hole of the motor frame, and the runners are respectively butted with the water inlet hole, the water outlet hole and the hydrogen hole of the electrode frame.
An upper insulating plate 81 and an anode electrode plate 82 are sequentially arranged between the lower side surface of the anode end plate 8 and the electrolytic chamber, and a lower insulating plate 91, a cathode electrode plate 92 and a titanium material partition plate 10 are sequentially arranged between the upper side surface of the cathode end plate 9 and the electrolytic chamber.
An anode frame 1 and a cathode frame 2 constituting each electrolytic chamber sandwich a membrane electrode 7. An anode upper sealing film 16 is padded on the upper side surface of the anode frame 1, an anode lower sealing film 17 is padded between the lower side surface and the membrane electrode 7, a cathode upper sealing film 25 is padded between the upper side surface of the cathode frame 2 and the membrane electrode 7, a cathode lower sealing film 26 is padded on the lower side surface, and an anode metal layer 18 is arranged in the frame body of the anode frame 1. The four edges of the outer edge of the anode metal layer 18 are respectively butted with the four edges of the inner edge of the frame body of the anode frame 1. The frame body of the cathode frame 2 is provided with a cathode metal layer 27, and four edges of the outer edge of the cathode metal layer 27 are respectively butted with four edges of the inner edge of the frame body of the cathode frame 2. The inner edge of the cathode frame 2 forms a support platform 28 at the underside of the joint of the anode frame 1 and the anode metal layer 18, and the membrane electrode 7 is pressed against the support platform 28.
Seal membrane in the electrolysis trough, the electrode plate, the insulating board, all bolt perforation on corresponding electrode frame on baffle and the membrane electrode, water hole and hydrogen hole department all open and have the perforation, so that the water and the hydrogen of every electrolysis chamber flow through, make simultaneously that the fastening bolt 101 passes with the installation in proper order, the top of every fastening bolt 101 all threaded connection has a plurality of fastening nut 102 in the upside of positive pole end plate 8, every fastening bolt 101 all has the spring pad 103, the spring pad 103 is located between the fastening nut 102 and the positive pole end plate 8 of bottommost side, the spring pad 103 can effectively deal with the thickness change that each part in the electrolysis trough caused because of expend with heat and contract with cold, keep the stability of electrolysis trough structure.
Example 3
The electrolytic cell disclosed in patent example 2 of the invention is selected to be compared with the old traditional electrolytic cell before transformation, and the electrolytic cell and the traditional electrolytic cell are respectively used for normal electrolytic hydrogen production, and the external environment temperature, the power supply voltage, the water flow pressure and the like of the electrolytic cell and the traditional electrolytic cell are completely the same. The equipment states of the two electrolytic tanks are detected at intervals in the using process.
1. Every 1000 hours, the water flow changes of the two electrolytic tanks are detected, and the detection results are recorded as shown in Table 1,
table 1: variation of water flow
| Time/(thousand hours) | The invention relates to an electrolytic cell | Conventional |
| 1 | 32.00 | 24 |
| 2 | 31.80 | 22 |
| 3 | 31.30 | 18 |
| 4 | 29.00 | 12 |
| 5 | 27.97 | 2 |
By recording the data in table 1 and referring to fig. 12, firstly, the water flow rate of the electrolytic cell disclosed in example 2 of the present invention is significantly higher than that of the conventional electrolytic cell of the control group, and is one third higher than that of the conventional electrolytic cell, and the improvement is very significant. The main reason is that the water flow channels of the anode frame are arranged in a fan shape, so that the water flow throughput is increased, and the hydrogen production efficiency of the electrolytic cell can be obviously improved by increasing the water flow. Furthermore, along with the extension of the working time, the water flow of the traditional electrolytic cell of the control group is continuously reduced, and the reason is that the sealing film on the electrode frame is damaged due to long-time work, water flow scouring, oxidation and the like, so that the water flow channel is blocked, and the water flow is continuously reduced. The cover plate is added on the water flow channel of the electrolytic cell disclosed by the invention, so that the sealing film cannot be in direct contact with the water flow channel, and the sealing film is effectively prevented from being damaged to block the water flow channel. Therefore, the water flow is not obviously reduced along with the extension of the working time, and the electrolytic cell is ensured to have continuous and stable hydrogen production efficiency.
2. The sealing performance of the electrolytic cells is checked by means of pressure detection, the pressure change of the two electrolytic cells is recorded every 1 hour, and the detection result is recorded as shown in table 2,
table 2: variation of pressure
The data recorded in table 2 and shown in fig. 13 show that the detection pressure of the electrolytic cell disclosed in inventive example 2 is not significantly reduced with the passage of time, and is basically maintained stable, which indicates that the sealing performance is good; the detection pressure of the traditional electrolytic cell of the control group is obviously reduced along with the time, and the tightness is poor. The obvious difference between the electrolytic cell of the invention and the traditional electrolytic cell is that the sealing wales at the inner part and the outer part of the anode frame and the cathode frame of the electrolytic cell of the invention are butted in a meshing way, thus effectively improving the sealing property of the electrolytic cell.
3. Every 100 hours, the voltage changes of the two electrolytic cells were measured, and the measurement results were recorded as shown in Table 3,
table 3: variation of voltage
The data recorded in table 3, in combination with the fact that the voltage of the electrolytic cell disclosed in embodiment 2 of the present invention shown in fig. 14 does not change much after 2000 hours of operation, and the voltage of the electrolytic cell as the control group increases with the increase of the operation time, illustrate that the problem of the electrolytic cell of the control group due to the self-generated structure exists with the increase of the operation time, and the power consumption of the electrolytic cell in order to ensure the hydrogen production increases continuously.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, which is defined by the appended claims and the description of the invention.
Claims (10)
1. An electrode frame for high-voltage electrolysis, which comprises an anode frame and a cathode frame and is characterized in that the anode frame and the cathode frame are square frames with the same outer diameter, the left and right side frames of the anode frame are symmetrically provided with a plurality of water inlet holes and water outlet holes, the upper and lower side frames are symmetrically provided with hydrogen passing holes, the left and right side frames of the cathode frame are symmetrically provided with a plurality of water passing holes, the upper and lower side frames are symmetrically provided with hydrogen holes, the positions of the water passing holes correspond to the positions of the water inlet holes and the water outlet holes on the anode frame, the positions of the hydrogen passing holes correspond to the positions of the hydrogen passing holes on the anode frame, the corresponding symmetric distributions on the anode frame and the cathode frame are respectively provided with a plurality of bolt through holes, the two sides of the anode frame and the cathode frame are respectively provided with a plurality of V-shaped sealing convex lines along the inner edge and the outer edge of the frames, and the anode frame and the cathode frame are oppositely combined, the sealing convex ridges of the two opposite surfaces are mutually meshed.
2. The electrode frame for high-pressure electrolysis according to claim 1, wherein the sealing ribs at the front surface edge of the anode frame body bypass from the opposite outer sides of the water inlet hole and the water outlet hole, the water flow channel is recessed between the water inlet hole and the water outlet hole and the inner edge of the anode frame body, the sealing ribs at the front surface edge of the cathode frame body bypass from the opposite outer side of the hydrogen hole, a hydrogen flow channel is recessed between the hydrogen hole and the inner edge of the anode frame body, the hydrogen flow channel of the anode frame and the hydrogen flow channel of the cathode frame body are respectively fan-shaped, wherein a plurality of rows of flow-dividing ribs are respectively arranged, and the flow-dividing ribs in the water flow channel at the water inlet hole are arranged in a staggered manner.
3. The electrode frame for high-pressure electrolysis according to claim 2, wherein the water flow passage of the anode frame and the hydrogen flow passage of the cathode frame are provided with cover plates at upper sides thereof, and the upper surfaces of the cover plates are also provided with a plurality of sealing ribs.
4. The electrode frame for high-voltage electrolysis according to claim 3, wherein the anode frame and the cathode frame are respectively provided with a plurality of positioning rings formed by a plurality of annular V-shaped ribs, the center of the positioning ring of the anode frame is provided with a positioning pin in a protruding manner, the center of the positioning ring of the cathode frame is provided with a positioning hole in a recessed manner, when the anode frame and the cathode frame are aligned, the V-shaped ribs of the corresponding positioning rings are engaged with each other, and the positioning pin of the anode frame is inserted into the positioning hole of the cathode frame.
5. The electrode frame for high-voltage electrolysis according to claim 4, wherein the frame body width of the cathode frame is larger than the frame body width of the anode frame, and when the two frames are aligned, the inner edge of the frame body of the cathode frame exceeds the inner edge of the frame body of the anode frame to form a supporting platform.
6. The electrode frame for high pressure electrolysis according to claim 5, wherein the cap plate has studs protruded from both ends of the bottom surface thereof, the water flow channel of the anode frame and the hydrogen flow channel of the cathode frame have connection holes recessed from both sides thereof, and the studs at both ends are inserted into the connection holes at both sides of the flow channels when the cap plate is fitted over the flow channels.
7. A high-pressure electrolytic cell, characterized in that, the high-pressure electrolytic cell includes a plurality of vertically stacked electrolytic cells composed of a pair of anode frames and cathode frames according to claim 6, the anode frame and cathode frame constituting each electrolytic cell are butted through the front of their respective frame body, the anode frame is on top, the cathode frame is under, the bottom of the high-pressure electrolytic cell is a cathode end plate, the top is an anode end plate, the anode end plate and cathode end plate are provided with a plurality of bolt through holes corresponding to the electrode frames, and are fastened through the bolt through holes corresponding to the bolt through holes in sequence, the side of the anode end plate is provided with a water injection hole, a water discharge hole and a hydrogen discharge hole, the water injection hole, water discharge hole and hydrogen discharge hole are provided with flow channels inside the anode end plate, and the bottom of the anode end plate is provided with holes corresponding to the positions of the water inlet hole, water outlet hole and hydrogen discharge hole of the electrode frame, and are respectively butted with the water hole of the electrode frame and the hydrogen hole.
8. A high-pressure electrolyser as claimed in claim 7 wherein, between the anode frame and the cathode frame of each electrolyser, there is sandwiched a membrane electrode, the upper side of the anode frame is padded with an anode top seal membrane, the lower side and the membrane electrode are padded with an anode bottom seal membrane, the upper side of the cathode frame and the membrane electrode are padded with a cathode top seal membrane, and the lower side is padded with a cathode bottom seal membrane, an anode metal layer is provided in the frame of the anode frame, the outer edge four sides of the anode metal layer are butted with the frame inner edge four sides of the anode frame respectively, a cathode metal layer is provided in the frame of the cathode frame, the outer edge four sides of the cathode metal layer are butted with the frame inner edge four sides of the cathode frame respectively.
9. The high-pressure electrolytic cell according to claim 8, wherein an upper insulating plate and an anode electrode plate are sequentially arranged between the lower side surface of the anode end plate and the electrolytic chamber, and a lower insulating plate, a cathode electrode plate and a titanium separator are sequentially arranged between the upper side surface of the cathode end plate and the electrolytic chamber.
10. A high-pressure electrolyser as claimed in claim 9 wherein the top end of each fastening bolt is threaded with a plurality of fastening nuts on the upper side of the anode end plate, each fastening bolt being sleeved with a spring washer located between the bottommost fastening nut and the anode end plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210783265.8A CN114990594B (en) | 2022-07-05 | 2022-07-05 | Electrode frame for high-voltage electrolysis and high-voltage electrolysis tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210783265.8A CN114990594B (en) | 2022-07-05 | 2022-07-05 | Electrode frame for high-voltage electrolysis and high-voltage electrolysis tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114990594A true CN114990594A (en) | 2022-09-02 |
| CN114990594B CN114990594B (en) | 2023-07-25 |
Family
ID=83020565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210783265.8A Active CN114990594B (en) | 2022-07-05 | 2022-07-05 | Electrode frame for high-voltage electrolysis and high-voltage electrolysis tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114990594B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600340A (en) * | 2014-12-26 | 2015-05-06 | 上海电气集团股份有限公司 | Electrode frame structure of single batteries in redox flow battery as well as single battery and electric pile |
| KR101828598B1 (en) * | 2017-11-27 | 2018-02-12 | 임한귀 | Seawater Electrolyer not using Acid Cleaning |
| CN108796538A (en) * | 2018-08-27 | 2018-11-13 | 山东赛克赛斯氢能源有限公司 | A kind of electrolytic bath pole sealing frame |
| CN108796539A (en) * | 2018-08-27 | 2018-11-13 | 山东赛克赛斯氢能源有限公司 | Electrolytic bath pole sealing frame |
| CN113106481A (en) * | 2020-09-14 | 2021-07-13 | 氢牛科技(东莞)有限公司 | Hydrogen-oxygen generating device and hydrogen-oxygen preparation method thereof |
| CN114628720A (en) * | 2020-12-11 | 2022-06-14 | 中国科学院大连化学物理研究所 | Electrode frame and diaphragm or bipolar plate integrated assembly and application thereof |
-
2022
- 2022-07-05 CN CN202210783265.8A patent/CN114990594B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600340A (en) * | 2014-12-26 | 2015-05-06 | 上海电气集团股份有限公司 | Electrode frame structure of single batteries in redox flow battery as well as single battery and electric pile |
| KR101828598B1 (en) * | 2017-11-27 | 2018-02-12 | 임한귀 | Seawater Electrolyer not using Acid Cleaning |
| CN108796538A (en) * | 2018-08-27 | 2018-11-13 | 山东赛克赛斯氢能源有限公司 | A kind of electrolytic bath pole sealing frame |
| CN108796539A (en) * | 2018-08-27 | 2018-11-13 | 山东赛克赛斯氢能源有限公司 | Electrolytic bath pole sealing frame |
| CN113106481A (en) * | 2020-09-14 | 2021-07-13 | 氢牛科技(东莞)有限公司 | Hydrogen-oxygen generating device and hydrogen-oxygen preparation method thereof |
| CN114628720A (en) * | 2020-12-11 | 2022-06-14 | 中国科学院大连化学物理研究所 | Electrode frame and diaphragm or bipolar plate integrated assembly and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114990594B (en) | 2023-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109980245B (en) | Sealing method for bipolar plate and membrane electrode in direct methanol fuel cell | |
| CN108796539B (en) | Electrode sealing frame for electrolytic cell | |
| KR20110124415A (en) | Pem water electrolyser using 3-dimension mesh | |
| CN102683718A (en) | Bipolar plate for fuel cell | |
| CN114262909A (en) | Proton exchange membrane water electrolyzer, system and method | |
| US7906247B2 (en) | Fuel cell and frame used therein | |
| CN216972701U (en) | Proton exchange membrane water electrolyzer and system | |
| CN217757689U (en) | Axial non-equidistant corrugated plate electrode structure | |
| CN114318386A (en) | Proton exchange membrane water electrolyzer, system and method | |
| WO2012042288A1 (en) | Frameless electrochemical cell stack having self centering rigid plastic bushings in aligned through holes of interconnects and membrane assemblies | |
| CN114990594A (en) | Electrode frame for high-voltage electrolysis and high-voltage electrolytic tank | |
| CN105047959A (en) | Over-bridge metal bipolar plate for fuel cell | |
| CN102122721A (en) | Hydrogen production device based on solid electrolyte electrolytic cell | |
| CN210052797U (en) | Single cell for testing fuel cell | |
| CN111313049A (en) | Gas distribution structure of flow field transition region of graphite bipolar plate | |
| CN114759212B (en) | Bipolar plate for fuel cell | |
| CN216427429U (en) | Bipolar plate for water electrolyzer | |
| CN114824338A (en) | Flow battery runner with two-fork finger type structure on bipolar plate | |
| CN213093233U (en) | Low-power fuel cell bipolar plate | |
| CN115094452A (en) | Composite electrode frame and electrolytic cell | |
| CN204834755U (en) | Bridging formula metal bipolar plate | |
| CN113818038A (en) | Axial non-equidistant corrugated plate electrode | |
| CN209200075U (en) | A kind of parallel-connection type hydraulic galvanic battery electrode frame | |
| CN208368633U (en) | A kind of electrode frame used for all-vanadium redox flow battery | |
| CN209447939U (en) | A kind of tandem electrode of liquid flow cell frame and its battery stack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |