CN114717577B - Oxyhydrogen self-balancing device and method for electrolytic water hydrogen production system - Google Patents
Oxyhydrogen self-balancing device and method for electrolytic water hydrogen production system Download PDFInfo
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- CN114717577B CN114717577B CN202210502006.3A CN202210502006A CN114717577B CN 114717577 B CN114717577 B CN 114717577B CN 202210502006 A CN202210502006 A CN 202210502006A CN 114717577 B CN114717577 B CN 114717577B
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- hydrogen
- oxygen
- separator
- buffer tube
- pressure
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 136
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 136
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 91
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000001301 oxygen Substances 0.000 claims abstract description 103
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 103
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 94
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 42
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- 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
- C25B15/00—Operating or servicing cells
- C25B15/02—Process control or regulation
-
- 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
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
- C25B15/083—Separating products
-
- 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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- 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)
- Automation & Control Theory (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention discloses an oxyhydrogen self-balancing device and method of a water electrolysis hydrogen production system, comprising the following steps: the hydrogen separator is communicated with the oxygen separator, a buffer tube used for balancing pressure is arranged between the hydrogen separator and the oxygen separator, a hydrogen side piston is arranged in the buffer tube and close to one end of the hydrogen separator, and an oxygen side piston is arranged in the buffer tube and close to one side of the oxygen separator. According to the invention, the buffer tube is communicated between the hydrogen separator and the oxygen separator, and the hydrogen side piston and the oxygen side piston are arranged in the buffer tube, so that when the pressure in the hydrogen separator or the oxygen separator changes, the hydrogen side piston and the oxygen side piston in the buffer tube can move in the buffer tube to balance the pressure on two sides of the hydrogen separator and the oxygen separator, thereby reducing the change of the liquid level difference in the hydrogen separator and the oxygen separator caused by the influence of air pressure, ensuring that the liquid level difference in the hydrogen separator and the oxygen separator is always in an allowable range, and ensuring the safety requirement of the electrolytic water hydrogen production operation.
Description
Technical Field
The invention relates to the technical field of electrolytic water hydrogen production equipment, in particular to an oxyhydrogen self-balancing device and method of an electrolytic water hydrogen production system.
Background
The liquid level difference of the hydrogen and oxygen separators of the water electrolysis hydrogen production system can only meet the safety requirement in a small range. At present, the pressures at two sides of oxyhydrogen are respectively collected, and the pressures are calculated and compared to control the opening of regulating valves at two sides to achieve the purpose of balancing, so that the operation is very complicated, the load change of the electrolytic tank cannot be responded quickly, the liquid level difference of the hydrogen and oxygen separators cannot be controlled in a setting range, and the oxyhydrogen gas can be mixed and dangerous when serious.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
In order to achieve the above purpose, the invention provides an oxyhydrogen self-balancing device of an electrolytic water hydrogen production system, comprising: the hydrogen separator is communicated with the oxygen separator, a buffer tube used for balancing pressure is arranged between the hydrogen separator and the oxygen separator, a hydrogen side piston is arranged in the buffer tube and close to one end of the hydrogen separator, and an oxygen side piston is arranged in the buffer tube and close to one side of the oxygen separator.
According to the invention, the buffer tube is communicated between the hydrogen separator and the oxygen separator, and the hydrogen side piston and the oxygen side piston are arranged in the buffer tube, so that when the pressure in the hydrogen separator or the oxygen separator changes, the hydrogen side piston and the oxygen side piston in the buffer tube can move in the buffer tube to balance the pressure on two sides of the hydrogen separator and the oxygen separator, thereby reducing the change of the liquid level difference in the hydrogen separator and the oxygen separator caused by the influence of air pressure, ensuring that the liquid level difference in the hydrogen separator and the oxygen separator is always in an allowable range, ensuring the safety requirement of the hydrogen production operation by water electrolysis, and saving a large amount of manpower investment.
Optionally, a porous support member is provided at both the location where the hydrogen separator communicates with the buffer tube and the location where the oxygen separator communicates with the buffer tube.
Further, the porous support member is sealingly connected to the buffer tube.
Further, the buffer tube is filled with a buffer balance medium.
Further, the pressure of the buffer tube buffer balance medium is 50% of the rated working pressure of the electrolytic cell where the self-balancing device is located.
Further, the pressure-reducing balance medium is a gas medium.
Further, the buffer tube internal volume is the sum of the hydrogen separator volume and the oxygen separator volume.
The invention also provides an oxyhydrogen self-balancing method of the electrolyzed water hydrogen production system for implementing the oxyhydrogen self-balancing device of the electrolyzed water hydrogen production system, which comprises the following steps:
s1, packaging a buffer tube with a buffer balance medium in advance, wherein the pressure of the buffer balance medium is 50% of the rated working pressure of an electrolytic tank where the self-balancing device is positioned, and assembling an oxyhydrogen balance device of an electrolytic water hydrogen production system;
s2, placing the hydrogen-oxygen self-balancing device of the assembled water electrolysis hydrogen production system in an electrolytic tank, respectively placing a hydrogen separator and an oxygen separator in the electrolytic tank corresponding to the hydrogen side and the oxygen side, and starting the electrolytic tank to perform water electrolysis hydrogen production operation;
and S3, in the operation of producing hydrogen by electrolyzing water, the hydrogen side piston and the oxygen side piston in the buffer tube move in the buffer tube to adjust the pressure at the two sides of the hydrogen separator and the oxygen separator according to the pressure at the two sides of the hydrogen separator and the oxygen separator.
Further, in the step S3, when the pressures of both sides of the hydrogen and the oxygen of the electrolytic cell reach 50% of the rated operating pressure of the electrolytic cell, the positions of the hydrogen side piston and the oxygen side piston are unchanged.
Further, in the step S3, when the pressure of the hydrogen side and the oxygen side of the electrolyzer reach 100% of the rated working pressure of the electrolyzer, the hydrogen side piston and the oxygen side piston both compress one fourth of the total volume of the buffer tube towards the middle part of the buffer tube to reach a new balance.
Further, in the step S3, when the pressure of either one of the hydrogen side and the oxygen side suddenly increases, the hydrogen side piston or the oxygen side piston corresponding to the one side moves toward the inside of the buffer tube, and the oxygen side piston or the hydrogen side piston of the other side moves toward the end of the buffer tube, so that the hydrogen side and the oxygen side of the electrolyzer are balanced again.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic diagram of the overall structure of an oxyhydrogen self-balancing device of a water electrolysis hydrogen production system according to the present invention;
FIG. 2 is a schematic view of the structure of a porous support member in an oxyhydrogen self-balancing device of a water electrolysis hydrogen production system according to the present invention;
FIG. 3 is a flow chart of overall method steps of a hydrogen-oxygen self-balancing method of a water electrolysis hydrogen production system according to the present invention.
Reference numerals illustrate:
1. a hydrogen separator; 2. a porous support member; 3. a hydrogen side piston; 4. a buffer tube; 5. an oxygen side piston; 6. an oxygen separator.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The invention provides an oxyhydrogen self-balancing device of a water electrolysis hydrogen production system, which is described in detail below with reference to fig. 1 to 2.
An oxyhydrogen self-balancing device of an electrolytic water hydrogen production system, comprising: the hydrogen separator 1 and the oxygen separator 6 are communicated with each other, a buffer tube 4 for balancing pressure is arranged between the hydrogen separator 1 and the oxygen separator 6, a hydrogen side piston 3 is arranged in the buffer tube 4 at one end, close to the hydrogen separator 1, of the buffer tube 4, and an oxygen side piston 5 is arranged in the buffer tube 4 at one side, close to the oxygen separator 6, of the buffer tube 4.
The buffer tube 4 is filled with a buffer balance medium corresponding to the pipeline between the hydrogen side piston 3 and the oxygen side piston 5, and in this embodiment, the buffer balance medium is a gaseous medium, specifically, nitrogen, and in other embodiments, the buffer balance medium may also be a liquid medium. And meanwhile, in order to ensure that the buffer pressure balance medium can be in the buffer tube 4, the inner volume of the buffer tube 4 is the sum of the volumes of the hydrogen separator 1 and the oxygen separator 6 on the premise of not influencing the normal operation of the hydrogen separator 1 and the oxygen separator 6, and the pressure of the buffer pressure balance medium in the buffer tube 4 is 50% of the rated working pressure of an electrolytic tank where the self-balancing device is positioned.
Further, in order to avoid that the pressures generated in the electrolytic cell by the hydrogen separator 1 and the oxygen separator 6 do not always allow the hydrogen side piston 3 and the oxygen side piston 5 to be placed in the buffer tube 4 at all times during operation, porous support members 2 are provided at both the positions where the hydrogen separator 1 communicates with the buffer tube 4 and the positions where the oxygen separator 6 communicates with the buffer tube 4. In this embodiment, the porous support member 2 is provided in a disc shape, and a plurality of circular through holes are provided in an array penetrating the porous support member 2 on the end face of the porous support member 2. In some embodiments, the circular through holes provided on the porous support member 2 may be polygonal through holes. The hydrogen in the hydrogen separator 1 and the oxygen in the oxygen separator 6 can enter the buffer tube 4 through the porous supporting member 2, so that the pressure balance adjustment on both sides of the hydrogen separator 1 and the oxygen separator 6 is completed in the buffer tube 4 in cooperation with the buffer balance medium, the hydrogen side piston 3 and the oxygen side piston 5. And the porous support member 2 is sealingly connected to the buffer tube 4 in order to avoid leakage of hydrogen or oxygen generated in the electrolytic cell into the buffer tube 4.
The invention also provides an oxyhydrogen self-balancing method of the electrolyzed water hydrogen production system for implementing the oxyhydrogen self-balancing device of the electrolyzed water hydrogen production system, which comprises the following steps with reference to FIG. 3:
s1, a buffer tube 4 is filled with a buffer balance medium in advance, the pressure of the buffer balance medium is 50% of the rated working pressure of an electrolytic tank where the self-balancing device is positioned, and an oxyhydrogen balance device of an electrolytic water hydrogen production system is assembled;
s2, placing the hydrogen-oxygen self-balancing device of the assembled water electrolysis hydrogen production system in an electrolytic tank, respectively placing the hydrogen separator 1 and the oxygen separator 6 in the electrolytic tank at the corresponding hydrogen side and the oxygen side, and starting the electrolytic tank to carry out water electrolysis hydrogen production operation;
s3, in the operation of producing hydrogen by electrolyzing water, the hydrogen side piston 3 and the oxygen side piston 5 in the buffer tube 4 move in the buffer tube 4 according to the pressure of the two sides of the hydrogen separator 1 and the oxygen separator 6 to adjust the pressure of the two sides of the hydrogen separator 1 and the oxygen separator 6.
Specifically, for different working conditions, the hydrogen side piston 3 and the oxygen side piston 5 have different working states, and in S3, when the pressures of the hydrogen side and the oxygen side of the electrolytic cell reach 50% of the rated working pressure of the electrolytic cell, the positions of the hydrogen side piston 3 and the oxygen side piston 5 are unchanged.
In S3, when the pressure of both the hydrogen and oxygen sides of the electrolyzer reaches 100% of the rated operating pressure of the electrolyzer, the hydrogen side piston 3 and the oxygen side piston 5 each compress a quarter of the total volume of the buffer tube 4 toward the middle of the buffer tube 4 to a new equilibrium.
In S3, when the pressure of either one of the hydrogen side and the oxygen side suddenly increases, the hydrogen side piston 3 or the oxygen side piston 5 corresponding to the one side moves into the buffer tube 4, and the oxygen side piston 5 or the hydrogen side piston 3 of the other side moves toward the end of the buffer tube 4, so that the hydrogen side and the oxygen side of the electrolytic cell are balanced again. In this embodiment, taking the example of 20% increase of the hydrogen side pressure, assuming that the rated pressure of the electrolytic cell is 1MPa, the hydrogen side pressure of the electrolytic cell is suddenly increased from 1MPa to 1.2MPa, according to the gas state equation, it is known that the hydrogen side piston 3 compresses and moves one fifth of the total volume of the buffer tube 4 toward the middle of the buffer tube 4, and the oxygen side piston moves one tenth of the total volume of the buffer tube 4 toward the end of the buffer tube 4, so that the pressure balance is re-reached.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An oxyhydrogen self-balancing device of an electrolytic water hydrogen production system, which is characterized by comprising: the hydrogen separator is communicated with the oxygen separator, a buffer tube used for balancing pressure is arranged between the hydrogen separator and the oxygen separator, a hydrogen side piston is arranged in the buffer tube and close to one end of the hydrogen separator, an oxygen side piston is arranged in the buffer tube and close to one side of the oxygen separator, and a buffer pressure balancing medium is filled in a pipeline between the corresponding hydrogen side piston and the oxygen side piston in the buffer tube.
2. The hydrogen-oxygen self-balancing device of the water electrolysis hydrogen production system according to claim 1, wherein: porous support members are provided at both the locations where the hydrogen separator communicates with the buffer tube and the locations where the oxygen separator communicates with the buffer tube.
3. The hydrogen-oxygen self-balancing device of the water electrolysis hydrogen production system according to claim 2, wherein: the porous support member is sealingly connected to the buffer tube.
4. The hydrogen and oxygen self-balancing device of an electrolytic water hydrogen production system according to claim 1, wherein the pressure of the buffer tube buffer medium is 50% of the rated operating pressure of the electrolytic tank where the self-balancing device is located.
5. The hydrogen-oxygen self-balancing device of the water electrolysis hydrogen production system according to claim 1, wherein the pressure-reducing balancing medium is a gas medium.
6. An oxyhydrogen self-balancing device for a water electrolysis hydrogen production system according to claim 1, wherein the buffer tube internal volume is the sum of the hydrogen separator volume and the oxygen separator volume.
7. A method for hydrogen and oxygen self-balancing of an electrolytic water hydrogen production system according to any one of claims 1 to 6, comprising the steps of:
s1, packaging a buffer tube with a buffer balance medium in advance, wherein the pressure of the buffer balance medium is 50% of the rated working pressure of an electrolytic tank where the self-balancing device is positioned, and assembling an oxyhydrogen balance device of an electrolytic water hydrogen production system;
s2, placing the hydrogen-oxygen self-balancing device of the assembled water electrolysis hydrogen production system in an electrolytic tank, respectively placing a hydrogen separator and an oxygen separator in the electrolytic tank corresponding to the hydrogen side and the oxygen side, and starting the electrolytic tank to perform water electrolysis hydrogen production operation;
and S3, in the operation of producing hydrogen by electrolyzing water, the hydrogen side piston and the oxygen side piston in the buffer tube move in the buffer tube to adjust the pressure at the two sides of the hydrogen separator and the oxygen separator according to the pressure at the two sides of the hydrogen separator and the oxygen separator.
8. The hydrogen-oxygen self-balancing method of the water electrolysis hydrogen production system according to claim 7, wherein in the step S3, when the pressure of the hydrogen side and the oxygen side of the electrolytic cell reaches 50% of the rated operating pressure of the electrolytic cell, the positions of the hydrogen side piston and the oxygen side piston are unchanged.
9. A hydrogen and oxygen self-balancing method for a water electrolysis hydrogen production system according to claim 7, wherein in S3, when the pressure of both hydrogen and oxygen sides of the electrolyzer reaches 100% of the rated operating pressure of the electrolyzer, the hydrogen side piston and the oxygen side piston each compress a quarter of the total volume of the buffer tube toward the middle of the buffer tube to reach a new balance.
10. The hydrogen-oxygen self-balancing method of the water electrolysis hydrogen production system according to claim 7, wherein in the step S3, when the pressure of either one of the hydrogen side and the oxygen side suddenly increases, the hydrogen side piston or the oxygen side piston corresponding to the one side moves toward the inside of the buffer tube, and the oxygen side piston or the hydrogen side piston at the other side moves toward the end of the buffer tube, so that the hydrogen side and the oxygen side of the electrolytic cell are balanced again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210502006.3A CN114717577B (en) | 2022-05-09 | 2022-05-09 | Oxyhydrogen self-balancing device and method for electrolytic water hydrogen production system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210502006.3A CN114717577B (en) | 2022-05-09 | 2022-05-09 | Oxyhydrogen self-balancing device and method for electrolytic water hydrogen production system |
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| CN114717577A CN114717577A (en) | 2022-07-08 |
| CN114717577B true CN114717577B (en) | 2024-01-26 |
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| CN115652351B (en) * | 2022-11-03 | 2023-06-20 | 嘉庚创新实验室 | Asymmetric electrolytic water hydrogen production device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2747228Y (en) * | 2004-11-11 | 2005-12-21 | 高洪山 | Hydro-electrolytic hydrogen production device |
| CN212404296U (en) * | 2020-05-21 | 2021-01-26 | 考克利尔竞立(苏州)氢能科技有限公司 | Isolation protection device for water electrolysis hydrogen production |
| CN213655834U (en) * | 2020-10-30 | 2021-07-09 | 深圳市氢益家生物科技有限公司 | Integrated pressure balance regulating valve |
| CN214032711U (en) * | 2021-05-25 | 2021-08-24 | 北京水木汇德科技发展中心(有限合伙) | Water electrolysis hydrogen production device |
| CN113802135A (en) * | 2021-09-23 | 2021-12-17 | 中国华能集团清洁能源技术研究院有限公司 | Pressure difference adjusting device of electrolytic hydrogen production system and electrolytic hydrogen production system |
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- 2022-05-09 CN CN202210502006.3A patent/CN114717577B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2747228Y (en) * | 2004-11-11 | 2005-12-21 | 高洪山 | Hydro-electrolytic hydrogen production device |
| CN212404296U (en) * | 2020-05-21 | 2021-01-26 | 考克利尔竞立(苏州)氢能科技有限公司 | Isolation protection device for water electrolysis hydrogen production |
| CN213655834U (en) * | 2020-10-30 | 2021-07-09 | 深圳市氢益家生物科技有限公司 | Integrated pressure balance regulating valve |
| CN214032711U (en) * | 2021-05-25 | 2021-08-24 | 北京水木汇德科技发展中心(有限合伙) | Water electrolysis hydrogen production device |
| CN113802135A (en) * | 2021-09-23 | 2021-12-17 | 中国华能集团清洁能源技术研究院有限公司 | Pressure difference adjusting device of electrolytic hydrogen production system and electrolytic hydrogen production system |
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