CN218710904U - Electrode sealing frame for electrolytic stack - Google Patents
Electrode sealing frame for electrolytic stack Download PDFInfo
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- CN218710904U CN218710904U CN202222719495.6U CN202222719495U CN218710904U CN 218710904 U CN218710904 U CN 218710904U CN 202222719495 U CN202222719495 U CN 202222719495U CN 218710904 U CN218710904 U CN 218710904U
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- flow channel
- sealing frame
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- electrode
- sealing
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- 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
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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The utility model discloses an electrode sealing frame for electrolysis is piled, including sealing frame, sealing frame has: a water inlet; and a plurality of flow channels which flow through the membrane electrode area are arranged between the water inlet and the water outlet, and the time for water to flow from the water inlet to the water outlet through each flow channel is equal. A group of pure water flow channels are arranged between the outer bottom frame of the electrolytic stack electrode frame and the concave stack, and the pure water flow channel holes penetrate through the front side and the back side of the electrolytic stack electrode frame.
Description
Technical Field
The utility model relates to a hydrogen preparation technical field, in particular to an electrode sealing frame for electrolysis is piled.
Background
The hydrogen is the cleanest and efficient energy in the 21 st century, and how to efficiently prepare the hydrogen also immediately becomes a key technology of research, so that PEM (cation exchange membrane) water electrolysis hydrogen production is the advanced hydrogen production technology at home and abroad at present, and the most key component in the PEM water electrolysis hydrogen production technology is an electrolysis pile.
When the pure water flowing time of the flow channel structure of the sealing frame is equal, the uniformity of reaction and the uniformity of heat exchange are important performance indexes in the electrolytic stack, and the reason that the uniformity of reaction and the uniformity of heat exchange are poor is that the flow channel structure of the sealing frame cannot make the flowing time of the pure water equal, for example, the flow channel structure of the traditional electrolytic cell has the problems that the flow channel structure of the traditional electrolytic cell determines that the flow path of the fluid is not as long, the pure water cannot arrive at the same time, and the uniformity of reaction and the uniformity of heat exchange are affected.
SUMMERY OF THE UTILITY MODEL
The main object of the utility model is to provide an electrode sealing frame for electrolysis is piled, can effectively solve the problem among the background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an electrode sealing frame for an electrolytic stack comprising a sealing frame having:
the water inlet is used for inputting pure water;
the membrane electrode comprises a water inlet, a membrane electrode area, a plurality of channels which flow through the membrane electrode area are arranged between the water inlet and the water outlet, a groove in the frame is used for transmitting media from the water inlet to the membrane electrode area, the size and the length of the cross section of the groove are calculated during implementation, and the fact that fluids in each groove reach the membrane electrode area at the same time is guaranteed through tests, namely the time for pure water to flow from the water inlet to the water outlet through each channel is equal.
A group of pure water flow channels are arranged between the outer bottom frame of the electrolytic stack electrode frame and the concave stack, and the pure water flow channel holes penetrate through the front side and the back side of the electrolytic stack electrode frame.
As a preferred embodiment, the cross-sectional areas and the lengths of the multiple flow passages are the same, the water inlet to the water outlet has the shortest straight line, and the bending degree of the flow passage close to the shortest straight line is higher than that of the flow passage relatively far away from the shortest straight line, so as to ensure that the lengths of the flow passages are the same, for example, the flow passage close to the shortest straight line is S-shaped, and the flow passage far away from the shortest straight line is arc-shaped, so that pure water can reach each cross section at the same time, and the overall uniformity, the reaction uniformity and the heat exchange uniformity are ensured.
In a preferred embodiment, the plurality of flow channels includes at least a primary flow channel and a secondary flow channel, and the primary flow channel and the secondary flow channel have different lengths and sectional areas:
the length of the primary flow channel is smaller than that of the secondary flow channel;
the sectional area of the secondary flow channel is larger than that of the primary flow channel.
As a preferred embodiment, the plurality of runners further include a third runner, the length and the sectional area of the third runner are both greater than those of the second runner, at least two second runners and at least two third runners are provided, and the second runners and the third runner are distributed on two sides of the first runner.
By arranging the first-stage flow channel, the second-stage flow channel and the third-stage flow channel, the length of the flow channel is increased along with the number of stages, the sectional area of the flow channel is also increased along with the number of stages, and the flow velocity of the flow channel is increased along with the number of stages, so that the time spent by pure water in each flow channel for one time is equal, and the integral uniformity, the reaction uniformity and the heat exchange uniformity are ensured.
As a preferable embodiment, the sealing frame is further provided with a hydrogen outlet which is communicated with the membrane electrode area, and the hydrogen outlet is arranged in the center of two sides of the sealing frame and is used for collecting and using the prepared gas and also avoiding the phenomenon that the gas is locally collected to cause a sharp temperature rise and burn out the membrane electrode
In a preferred embodiment, the sealing frame is composed of an anode plastic plate and a cathode plastic plate, the electrolytic stack electrode frame is integrally formed by injection molding of engineering plastic, and a circle of concave stacks are respectively arranged on the front and back surfaces of the frame for the anode and the cathode correspondingly to serve as the sealing stacks.
As a preferred embodiment, the titanium plate comprises an anode titanium plate and a cathode titanium plate:
the anode titanium plate is arranged on one surface of the anode plastic plate of the sealing frame;
the cathode titanium plate is arranged on one surface of the cathode plastic plate of the sealing frame.
As a preferred embodiment, further comprising a first sealing film and a second sealing film:
the first sealing film is provided with hole positions corresponding to the water inlet, the water outlet and the hydrogen outlet, and is arranged between the anode plastic plate and the anode titanium plate;
the second sealing film is arranged on the other surface of the contact surface of the cathode titanium plate and the cathode plastic plate.
As a preferable embodiment, the solar cell further comprises a membrane electrode, and the membrane electrode is arranged in the middle of the anode titanium plate and the cathode titanium plate.
As a preferred embodiment, still include end plate, sealed pad and third seal membrane, the end plate includes upper portion board and lower part board, sealed pad with the water inlet the delivery port with the hydrogen outlet corresponds the setting, sealed pad is located the third seal membrane with between the upper portion board, set up the multilayer seal membrane, can fill the space that the stereoplasm level probably exists, improve the leakproofness, and the water inlet the delivery port with the hydrogen outlet additionally sets up sealed the pad.
As a preferred embodiment, still include screw rod, flange nut and quick-operation joint, the end plate the positive pole titanium board first seal membrane, positive pole plastic board the negative pole plastic board the second seal membrane the membrane electrode the third seal membrane with the negative pole titanium board all be equipped with the hole site that the screw rod corresponds just passes through the screw rod with flange nut fixed connection, quick-operation joint is a plurality of, and is a plurality of quick-operation joint with the upper portion board is connected and respectively with the delivery port the water inlet with go out the hydrogen mouth intercommunication.
Compared with the prior art, the utility model discloses following beneficial effect has:
the performance of the electrolytic stack and the use stability of the electrolytic stack are improved, and the condition of each reaction section of the whole electrolytic stack is ensured to be consistent;
the reaction area and the water inlet and outlet are kept at a certain distance, so that the stability of the reaction area can be better ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic view of a sealing frame structure of an electrode sealing frame for an electrolytic stack according to the present invention.
Fig. 2 is a schematic diagram of an electrolytic stack structure of an electrode sealing frame for an electrolytic stack according to the present invention.
In the figure: 100. a sealing frame; 110. a water inlet; 120. a water outlet; 130. a hydrogen outlet; 141. a primary flow channel; 142. a secondary flow channel; 143. a third-stage flow channel; 11. an anode plastic plate; 12. a cathode plastic plate; 21. an anode titanium plate; 22. a cathode titanium plate; 31. a first sealing film; 32. a second sealing film; 33. a third sealing film; 34. a gasket; 40. a membrane electrode; 50. an end plate; 61. a screw; 62. a flange nut; 70. a quick coupling.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, there is illustrated an electrode sealing frame for an electrolytic stack, comprising a sealing frame 100, the sealing frame 100 having:
a water inlet 110 for inputting pure water;
and a plurality of flow channels which flow through the membrane electrode 40 region are arranged between the water inlet 110 and the water outlet 120, and the grooves in the frame are used for transmitting media from the water inlet 110 to the membrane electrode 40 region, and during implementation, the cross-sectional dimensions and the lengths of the grooves are calculated to ensure that the fluids in each groove simultaneously reach the membrane electrode 40 region, that is, the time for pure water to flow from the water inlet 110 to the water outlet 120 through each flow channel is equal.
A group of pure water flow channels are arranged between the outer frame at the bottom of the electrolytic stack electrode frame and the concave stack, and the pure water flow channel holes penetrate through the front side and the back side of the electrolytic stack electrode frame, so that water flows into the concave stack after entering the water inlet 110, is transmitted to the same cross section and then flows into the electrolytic stack, the pure water is guaranteed to reach each cross section simultaneously, and the uniformity of the whole body, the uniformity of reaction and the uniformity of heat exchange are guaranteed.
The cross-sectional areas and the lengths of the other multiple flow channels are the same, the water inlet 110 to the water outlet 120 is provided with the shortest straight line, the tortuosity of the flow channel close to the shortest straight line is higher than that of the flow channel relatively far away from the shortest straight line, so that the lengths of all the flow channels are ensured to be the same, if the flow channel close to the shortest straight line is S-shaped, the flow channel far away from the shortest straight line is arc-shaped, pure water is ensured to reach each cross-section simultaneously, and the integral uniformity, the reaction uniformity and the heat exchange uniformity are ensured.
In addition, the plurality of runners may have at least a primary runner 141 and a secondary runner 142, and the primary runner 141 and the secondary runner 142 may have different lengths and sectional areas:
the length of the primary runner 141 is smaller than that of the secondary runner 142;
the secondary flow path 142 has a larger sectional area than the primary flow path 141.
Further, the plurality of runners further include a third runner 143, the length and the sectional area of the third runner 143 are both greater than those of the second runner 142, at least two second runners 142 and at least two third runners 143 are provided, and the second runners 142 and the third runners 143 are distributed on two sides of the first runner 141.
By arranging the first-stage flow channel 141, the second-stage flow channel 142 and the third-stage flow channel 143. N-stage flow channel, the length of the flow channel is increased along with the stage number, the sectional area of the flow channel is also increased along with the stage number, and the flow velocity of the flow channel is increased along with the stage number, so that the time spent by pure water in each flow channel for one time from beginning to end is equal, and the integral uniformity, the reaction uniformity and the heat exchange uniformity are ensured.
The sealing frame 100 further has a hydrogen outlet 130, the hydrogen outlet 130 is communicated with the membrane electrode 40, the hydrogen outlet 130 is arranged in the center of two sides of the sealing frame 100, and is used for collecting and using the prepared gas, and avoiding local gas accumulation, which causes a sharp temperature rise and burns out the membrane electrode 40
Example 2
As shown in fig. 2, a complete electrolytic stack structure is shown, including the sealing frame structure of example 1 above.
The sealing frame 100 is composed of an anode plastic plate 11 and a cathode plastic plate 12, the electrolytic stack pole frame is integrally formed by injection molding of engineering plastic, and the front and back surfaces of the frame are respectively provided with a circle of concave stacks corresponding to the anode and the cathode to serve as sealing stacks.
Wherein, still include positive pole titanium board 21 and negative pole titanium board 22:
the anode titanium plate 21 is arranged on one surface of the anode plastic plate 11 of the sealing frame 100;
the cathode titanium plate 22 is disposed on one side of the cathode plastic plate 12 of the sealing frame 100.
Wherein, still include first sealing film 31 and second sealing film 32:
the first sealing film 31 is provided with hole positions corresponding to the water inlet 110, the water outlet 120 and the hydrogen outlet 130, and the first sealing film 31 is arranged between the anode plastic plate 11 and the anode titanium plate 21;
the second sealing film 32 is provided on the other surface of the cathode titanium plate 22 that is in contact with the cathode plastic plate 12.
The membrane electrode assembly comprises a membrane electrode 40, wherein the membrane electrode 40 is arranged in the middle of the anode titanium plate 21 and the cathode titanium plate 22.
Wherein, still include end plate 50, sealed pad 34 and third seal membrane 33, end plate 50 includes upper portion board and lower part board, sealed pad 34 with water inlet 110 delivery port 120 with hydrogen outlet 130 corresponds the setting, sealed pad 34 is located third seal membrane 33 with between the upper portion board, set up the multilayer seal membrane, can fill the space that the stereoplasm level probably exists, improve the leakproofness, and water inlet 110 delivery port 120 with hydrogen outlet 130 additionally sets up sealed pad 34.
Wherein, still include screw rod 61, flange nut 62 and quick-operation joint 70, the end plate 50 the positive pole titanium board 21 first seal membrane 31 the positive pole plastic board 11 the negative pole plastic board 12 the second seal membrane 32 membrane electrode 40 the third seal membrane 33 with the negative pole titanium board 22 all be equipped with the hole site that the screw rod 61 corresponds just passes through screw rod 61 with flange nut 62 fixed connection, quick-operation joint 70 is a plurality of, and is a plurality of quick-operation joint 70 with the upper portion board is connected just respectively with delivery port 120 the water inlet 110 with go out hydrogen mouth 130 intercommunication.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used for convenience of description and simplicity of description only, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An electrode sealing frame for an electrolytic stack, comprising a sealing frame having:
a water inlet;
and a plurality of flow channels which flow through the membrane electrode area are arranged between the water inlet and the water outlet, and the time for water to flow from the water inlet to the water outlet through each flow channel is equal.
2. The electrode sealing frame for electrolytic stacks of claim 1, wherein the plurality of flow channels have at least a primary flow channel and a secondary flow channel, the primary flow channel and the secondary flow channel having different lengths and cross-sectional areas:
the length of the primary flow channel is smaller than that of the secondary flow channel;
the sectional area of the secondary flow channel is larger than that of the primary flow channel.
3. The electrode sealing frame for an electrolytic stack of claim 2, wherein the plurality of flow channels further comprises a tertiary flow channel, the tertiary flow channel has a length and a cross-sectional area larger than those of the secondary flow channel, the number of the secondary flow channel and the tertiary flow channel is at least two, and the secondary flow channel and the tertiary flow channel are distributed on two sides of the primary flow channel.
4. The electrode sealing frame for an electrolytic stack according to any one of claims 1 to 3, wherein the sealing frame further has a hydrogen outlet port communicating with the membrane electrode region, the hydrogen outlet port being provided at the center of both sides of the sealing frame.
5. The electrode sealing frame for an electrolytic stack of claim 4, wherein the sealing frame is composed of an anode plastic plate and a cathode plastic plate.
6. The electrode sealing frame for an electrolytic stack of claim 5, further comprising an anode titanium plate and a cathode titanium plate:
the anode titanium plate is arranged on one surface of the anode plastic plate of the sealing frame;
the cathode titanium plate is arranged on one surface of the cathode plastic plate of the sealing frame.
7. The electrode sealing frame for an electrolytic stack of claim 6, further comprising a first sealing film and a second sealing film:
the first sealing film is provided with hole positions corresponding to the water inlet, the water outlet and the hydrogen outlet, and is arranged between the anode plastic plate and the anode titanium plate;
the second sealing film is arranged on the other surface of the contact surface of the cathode titanium plate and the cathode plastic plate.
8. The electrode sealing frame for an electrolytic stack according to claim 7, further comprising a membrane electrode provided in the middle of the anode titanium plate and the cathode titanium plate.
9. The electrode sealing frame for an electrolytic stack of claim 8, further comprising an end plate, a sealing gasket, and a third sealing membrane, wherein the end plate comprises an upper plate and a lower plate, the sealing gasket is disposed corresponding to the water inlet, the water outlet, and the hydrogen outlet, and the sealing gasket is disposed between the third sealing membrane and the upper plate.
10. The electrode sealing frame for the electrolytic stack according to claim 9, further comprising a screw, a flange nut, and a quick coupling, wherein the end plate, the anode titanium plate, the first sealing film, the anode plastic plate, the cathode plastic plate, the second sealing film, the membrane electrode, the third sealing film, and the cathode titanium plate are provided with hole sites corresponding to the screw and are fixedly connected through the screw and the flange nut, the quick coupling is plural, and the quick coupling is connected to the upper plate and is respectively communicated with the water outlet, the water inlet, and the hydrogen outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222719495.6U CN218710904U (en) | 2022-10-17 | 2022-10-17 | Electrode sealing frame for electrolytic stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222719495.6U CN218710904U (en) | 2022-10-17 | 2022-10-17 | Electrode sealing frame for electrolytic stack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218710904U true CN218710904U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222719495.6U Active CN218710904U (en) | 2022-10-17 | 2022-10-17 | Electrode sealing frame for electrolytic stack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218710904U (en) |
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2022
- 2022-10-17 CN CN202222719495.6U patent/CN218710904U/en active Active
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