CN117089863A - Sealing method of hydrogen production sealing structure - Google Patents
Sealing method of hydrogen production sealing structure Download PDFInfo
- Publication number
- CN117089863A CN117089863A CN202311037138.4A CN202311037138A CN117089863A CN 117089863 A CN117089863 A CN 117089863A CN 202311037138 A CN202311037138 A CN 202311037138A CN 117089863 A CN117089863 A CN 117089863A
- Authority
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- China
- Prior art keywords
- gasket
- sealing
- diaphragm
- hydrogen production
- area
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 86
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000001257 hydrogen Substances 0.000 title claims abstract description 44
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910001868 water Inorganic materials 0.000 claims abstract description 18
- 238000011010 flushing procedure Methods 0.000 claims abstract description 4
- 230000008719 thickening Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 abstract description 2
- 238000005868 electrolysis reaction Methods 0.000 description 8
- 239000012528 membrane Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010220 ion permeability Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- C25B9/60—Constructional parts of 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
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 a sealing method of a hydrogen production sealing structure; the method comprises the following steps: s1, flushing an anode screen of a cell with pure water; s2, pulling a handle part on the diaphragm and placing the handle part above the unit grooves, then placing the diaphragm between two adjacent unit grooves from top to bottom, pulling two lower corners of the diaphragm, and enabling the diaphragm to be opposite to the unit grooves; s3, manually translating the diaphragm and firmly attaching the diaphragm to the washed net surface; s4, moving another unit groove to press the diaphragm, namely sealing and attaching the two first gaskets and the second gaskets, wherein the outer edge of the diaphragm is positioned in a sealing area, and the handle part passes through the locking area and extends to the outside of the locking area; and S5, after the two unit grooves are locked, removing the handle part positioned outside the gasket. According to the invention, the sealing area is used for pressing the diaphragm through the sealing fit of the first gasket and the second gasket, and the seepage of the diaphragm is closed through the locking area.
Description
Technical Field
The invention relates to a sealing method of a hydrogen production sealing structure, and belongs to the technical field of electrolytic tank sealing.
Background
The water electrolysis hydrogen production is one of the methods which are widely applied and mature at present. The hydrogen production process by using water as raw material is the reverse process of producing water by burning hydrogen and oxygen, so that only a certain form of certain energy is provided, the water can be decomposed. The efficiency of preparing hydrogen by decomposing water with electric energy is generally 75-85%, the process is simple, pollution is avoided, but the consumed electric quantity is large, so that the application of the method is limited to a certain extent. The method for producing hydrogen by using the electrolytic water of the peak-valley difference of the power grid is also characterized by being used as an energy storage means. The water power resources in China are rich, the water power is utilized for generating electricity, and the hydrogen production by water electrolysis has development prospect. Solar energy is inexhaustible, and a method for producing hydrogen by utilizing photoelectricity is called a solar energy hydrogen energy system, and experimental research has been carried out abroad. With the improvement of the conversion energy efficiency of the solar cell, the reduction of the cost and the extension of the service life are immeasurable, and the prospect of the solar cell for hydrogen production is not estimated. Meanwhile, the solar energy, the wind energy, the ocean energy and the like can also be used for preparing hydrogen through electricity and can be used for being regulated by taking hydrogen as an intermediate energy carrier, and converted energy is stored, so that the energy supply for users is more flexible and convenient. The surplus electric energy of the power supply system in the valley can also be used for hydrogen production by water electrolysis, so that the purpose of energy storage is achieved. Hundreds of water electrolysis hydrogen production devices in various scales in China are small-sized electrolysis hydrogen production equipment, and the purpose of the hydrogen electrolysis hydrogen production equipment is to prepare hydrogen gas as a seasoning rather than as an energy source. Along with the gradual expansion of the application of hydrogen energy, the water electrolysis hydrogen production method is inevitably developed.
The water electrolysis hydrogen production is a convenient method for producing hydrogen, direct current is introduced into an electrolytic tank filled with potassium hydroxide or sodium hydroxide, and water molecules undergo electrochemical reaction on electrodes to be decomposed into hydrogen and oxygen. As shown in figure 1, in the electrolytic tank in the prior art, a plurality of unit tanks are placed on an extruder, rubber gaskets and diaphragms are arranged between adjacent unit tanks, and a sealing effect is achieved through compression of an oil cylinder on the extruder, and as shown in figure 2, during installation of the diaphragms, the diaphragms are lifted by 2 persons at the top of the electrolytic tank and put down, and the lower 2 persons are at the corners of the 2, and after four corners are tensioned and leveled, the unit tanks are compressed. (the anode net is flushed, the membrane is sucked to the net surface), the size of the membrane is larger than the outer edge of the rubber gasket, the hydrogen production membrane is coated with a hydrophilic coating on the two sides of the fiber substrate net, the thickness is 0.5-1 mm, the product needs to meet the ion permeability and smaller resistance, the sealing is difficult, the two surfaces of the membrane exposed outside the stress range of the gasket are used for leaking liquid, and the problem that the pressure is increased cannot be solved, so that the electrolytic tank is leaked is solved.
Therefore, a sealing method of a hydrogen production sealing structure is needed to prevent the diaphragm from leaking outwards.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to overcome the defects of the prior art, the sealing method of the hydrogen production sealing structure for preventing the diaphragm from leaking outwards is provided.
The invention solves the problems by adopting the following technical scheme:
a sealing method of hydrogen production sealing structure; the method comprises the following steps:
s1, flushing an anode screen of a cell with pure water;
s2, pulling a handle part on the diaphragm and placing the handle part above the unit grooves, then placing the diaphragm between two adjacent unit grooves from top to bottom, pulling two lower corners of the diaphragm, and enabling the diaphragm to be opposite to the unit grooves;
s3, manually translating the diaphragm and firmly attaching the diaphragm to the washed net surface;
s4, moving another unit groove to press the diaphragm, namely sealing and attaching the two first gaskets and the second gaskets, wherein the outer edge of the diaphragm is positioned in a sealing area, and the handle part passes through the locking area and extends to the outside of the locking area;
and S5, after the two unit grooves are locked, removing the handle part positioned outside the gasket.
The hydrogen production sealing structure comprises a first gasket, a second gasket, a diaphragm and two unit grooves, wherein the first gasket and the second gasket are positioned between the two unit grooves, one side, close to each other, of the first gasket and the second gasket is the front side, the other side is the back side, one side, close to each other, of the two unit grooves is the sealing surface, the back side of the first gasket is attached to the sealing surface of one unit groove, the back side of the second gasket is attached to the sealing surface of the other unit groove, the diaphragm is positioned between the first gasket and the second gasket, and the diaphragm is provided with a handle. The first gasket and the second gasket form a sealing area of the inner ring and a locking area of the outer ring, the diaphragm is arranged between the first gasket and the second gasket of the sealing area, and the joint of the sealing area and the locking area is positioned in the outer edge of the unit groove.
Preferably, the front surface of the first gasket is stepped, and the first gasket is thickened towards the front surface of the first gasket, so that locking pressure is generated between the first gasket and the second gasket to form a locking area.
Preferably, the thickness is 0.5mm to 1.5mm.
Preferably, the joint of the sealing area and the locking area is 5 mm-10 mm away from the outer edge of the sealing surface.
Preferably, the size of the diaphragm is smaller than or equal to the size of the inner edge of the locking part.
Preferably, the front and back surfaces of the first gasket and the front and back surfaces of the second gasket are both provided with waterlines.
Preferably, the front surface of the second gasket is provided with ribs.
Preferably, the first gasket and the second gasket are made of rubber.
Compared with the prior art, the invention has the advantages that:
according to the sealing method of the hydrogen production sealing structure, the sealing region is used for pressing the diaphragm tightly through the sealing joint of the first gasket and the second gasket, and seepage of the diaphragm is closed through the locking region, so that sealing of the diaphragm is realized, and seepage is avoided.
Drawings
FIG. 1 is a schematic view of a prior art electrolytic cell;
FIG. 2 is a schematic diagram of a prior art diaphragm mounting structure;
FIG. 3 is a schematic structural view of a hydrogen production seal structure of the present invention;
FIG. 4 is a schematic view of a connection structure between a diaphragm and a handle
FIG. 5 is a schematic view of a gasket construction;
fig. 6 is a schematic diagram of a connection structure of a gasket and a diaphragm.
Wherein:
the sealing gasket comprises a first gasket 1, a second gasket 2, a diaphragm 3, a unit groove 4, a sealing surface 5, a thickening 6, a waterline 7, a convex rib 8 and a handle part 9.
Detailed Description
As shown in fig. 3-6, a hydrogen production sealing structure comprises a first gasket 1, a second gasket 2, a diaphragm 3 and two unit grooves 4, wherein the first gasket 1 and the second gasket 2 are made of rubber, the first gasket 1 and the second gasket 2 are positioned between the two unit grooves 4, one side, close to each other, of the first gasket 1 and the second gasket 2 is the front side, the other side is the back side, one side, close to each other, of the two unit grooves 4 is the sealing surface 5, the back side of the first gasket 1 is attached to the sealing surface 5 of one unit groove 4, the back side of the second gasket 2 is attached to the sealing surface 5 of the other unit groove 4, the diaphragm 3 is positioned between the first gasket 1 and the second gasket 2, a lifting part is arranged on the diaphragm 3, the first gasket 1 and the second gasket 2 form a sealing area of an inner ring and a locking area of an outer ring, the diaphragm 3 is arranged between the first gasket 1 and the second gasket 2 of the sealing area, and the joint of the sealing area and the locking area is positioned in the outer edge of the unit groove 4.
The front surface of the first gasket 1 is in a step shape, and the first gasket 1 is thickened by 60.5-1.5 mm towards the front surface, so that locking pressure is generated between the first gasket 1 and the second gasket 2 to form a locking area.
The joint of the sealing area and the locking area is 5 mm-10 mm away from the outer edge of the sealing surface 5.
The size of the diaphragm 3 is smaller than or equal to the inner edge size of the locking part.
The front and back sides of the first gasket 1 and the front and back sides of the second gasket 2 are respectively provided with a waterline 7.
The front face of the second gasket 2 is provided with a convex rib 8.
The working principle of the hydrogen production sealing structure is as follows:
the first gasket 1 is an anode gasket, the second gasket 2 is a cathode gasket, the front surface of the anode gasket is arranged in a step shape, so that the diaphragm 3 is conveniently hidden in a sealing area, the positioning is convenient during installation, the two unit grooves 4 are driven by an oil cylinder to realize locking, namely, after the distance between the two unit grooves 4 is reduced, the pressure on a sealing surface 5 is kept consistent, the first gasket 1 is attached to the second gasket 2, the sealing effect is ensured through a convex rib 8, namely, double sealing is formed, the sealing area is used for compressing the diaphragm 3, and the locking area is used for closing the seepage of the diaphragm 3;
a sealing method of hydrogen production sealing structure; the method comprises the following steps:
step S1, flushing the anode net of the unit tank 4 with pure water;
step S2, pulling a handle part on the diaphragm 3 and placing the handle part above the unit grooves 4, then placing the diaphragm 3 between two adjacent unit grooves 4 from top to bottom, pulling two lower corners of the diaphragm 3, and enabling the diaphragm 3 to be opposite to the unit grooves 4;
s3, manually translating the diaphragm 3 and firmly attaching the diaphragm 3 to the washed net surface;
s4, moving another unit groove 4 to press the diaphragm 3, namely, sealing and attaching the two first gaskets 1 and the second gaskets 2, wherein the outer edge of the diaphragm 3 is positioned in a sealing area, and a handle part passes through a locking area and extends to the outside of the locking area;
and S5, after the two unit grooves 4 are locked, removing the handle parts positioned outside the gasket.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions that are formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present invention.
Claims (8)
1. A sealing method of hydrogen production sealing structure; the hydrogen production sealing structure is characterized by comprising a first gasket (1), a second gasket (2), a diaphragm (3) and two unit grooves (4), wherein the first gasket (1) and the second gasket (2) are positioned between the two unit grooves (4), one side, which is close to each other, of the first gasket (1) and the second gasket (2) is the front surface, the other side is the back surface, one side, which is close to each other, of the two unit grooves (4) is a sealing surface (5), the back surface of the first gasket (1) is attached to the sealing surface (5) of one unit groove (4), the back surface of the second gasket (2) is attached to the sealing surface (5) of the other unit groove (4), the diaphragm (3) is positioned between the first gasket (1) and the second gasket (2), the diaphragm (3) is provided with a handle part, the first gasket (1) and the second gasket (2) form a sealing area of an inner ring and a locking area, the diaphragm (3) is arranged between the first gasket (1) and the second gasket (2) of the sealing area, and the outer ring (2) is positioned at the connecting area of the sealing area and the outer ring (4);
the specific sealing method comprises the following steps:
s1, flushing an anode screen of a unit tank (4) with pure water;
step S2, pulling a handle part on the diaphragm (3) and placing the handle part above the unit grooves (4), then placing the diaphragm (3) between two adjacent unit grooves (4) from top to bottom, pulling two lower corners of the diaphragm (3), and enabling the diaphragm (3) to be opposite to the unit grooves (4);
s3, manually translating the diaphragm (3) and firmly adhering the diaphragm (3) to the washed net surface;
s4, moving another unit groove (4) to press the diaphragm (3), namely sealing and attaching the two first gaskets (1) and the second gaskets (2), wherein the outer edge of the diaphragm (3) is positioned in a sealing area, and a handle part passes through a locking area and extends to the outside of the locking area;
and S5, after the two unit grooves (4) are locked, removing the handle part positioned outside the gasket.
2. The sealing method of a hydrogen production sealing structure according to claim 1, wherein: the front surface of the first gasket (1) is stepped, and the first gasket (1) is thickened (6) towards the front surface of the first gasket, so that locking pressure is generated between the first gasket (1) and the second gasket (2) to form a locking area.
3. The sealing method of a hydrogen production sealing structure according to claim 2, wherein: the thickness of the thickening (6) is 0.5 mm-1.5 mm.
4. The sealing method of a hydrogen production sealing structure according to claim 2, wherein: the joint of the sealing area and the locking area is 5 mm-10 mm away from the outer edge of the sealing surface (5).
5. The sealing method of a hydrogen production sealing structure according to claim 2, wherein: the size of the diaphragm (3) is smaller than or equal to the inner edge size of the locking part.
6. The sealing method of a hydrogen production sealing structure according to claim 1, wherein: the front and back sides of the first gasket (1) and the front and back sides of the second gasket (2) are respectively provided with a waterline (7).
7. The sealing method of a hydrogen production sealing structure according to claim 1, wherein: the front face of the second gasket (2) is provided with a convex rib (8).
8. The sealing method of a hydrogen production sealing structure according to claim 1, wherein: the first gasket (1) and the second gasket (2) are made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311037138.4A CN117089863A (en) | 2023-08-17 | 2023-08-17 | Sealing method of hydrogen production sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311037138.4A CN117089863A (en) | 2023-08-17 | 2023-08-17 | Sealing method of hydrogen production sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117089863A true CN117089863A (en) | 2023-11-21 |
Family
ID=88776727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311037138.4A Pending CN117089863A (en) | 2023-08-17 | 2023-08-17 | Sealing method of hydrogen production sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117089863A (en) |
-
2023
- 2023-08-17 CN CN202311037138.4A patent/CN117089863A/en active Pending
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