CN112760666A - Hydrogen production and hydrogen supplement system of hydrogen cooling unit and working method thereof - Google Patents
Hydrogen production and hydrogen supplement system of hydrogen cooling unit and working method thereof Download PDFInfo
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- CN112760666A CN112760666A CN202011429385.5A CN202011429385A CN112760666A CN 112760666 A CN112760666 A CN 112760666A CN 202011429385 A CN202011429385 A CN 202011429385A CN 112760666 A CN112760666 A CN 112760666A
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- 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
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- 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
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
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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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- Automation & Control Theory (AREA)
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- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention discloses a hydrogen production and hydrogen supplement system of a hydrogen cooling unit and a working method thereof, belonging to the hydrogen production and hydrogen supplement system, comprising a water tank, wherein the water tank is communicated with an ion purifier through a pipeline, the ion purifier is communicated with a filter through a pipeline, the filter is communicated with a PEM water electrolyzer through a pipeline, two poles of the PEM water electrolyzer are respectively communicated with a gas-liquid separator I and a gas-liquid separator II through pipelines, the gas-liquid separator I is communicated with a gas analyzer I through a pipeline, the gas analyzer I is communicated with a hydrogen tank through a pipeline, the hydrogen tank is communicated with the gas filter I through a pipeline, the gas filter I is communicated with a compressor I through a pipeline, the compressor I is communicated with a drying tower I through a pipeline, and the drying tower I is respectively communicated. The invention has scientific and reasonable structure, realizes automatic hydrogen supplement, can ensure the stable operation of the generator set, is beneficial to hydrogen sealing and can greatly improve the safety of the system.
Description
Technical Field
The invention relates to a hydrogen production and hydrogen supplement system, in particular to a hydrogen production and hydrogen supplement system of a hydrogen cooling unit.
Background
The generator set is an important component in a large-scale thermal power plant. In actual operation, the generator set generates a large amount of heat due to power loss of the motor winding and the iron core. In order to avoid the motor burning accident caused by the over-high temperature of the motor, a coolant is needed to cool the generator set, and commonly used coolants comprise air, water, hydrogen, oil and the like, wherein the hydrogen has high thermal conductivity (the thermal conductivity at 25 ℃ is 0.182W/(m.K), which is 8.4 times of the thermal conductivity of the air), small specific gravity, fast diffusion, easy transportation and recycling, and is a very effective gas cooling medium. For this reason, the thermal power generating units of 330-660MW all use hydrogen as the cooling medium of the generating units.
At present, an interval hydrogen supplementing mode is generally adopted, hydrogen is supplemented to rated pressure after hydrogen gas is reduced to certain pressure, the hydrogen supplementing mode can cause hydrogen pressure instability and fluctuation, so that heat conduction instability and hydrogen sealing pressure fluctuation are caused, the coiling temperature and the fluctuation of wind friction resistance can influence the energy saving of a generator, the coiling service life and the oil leakage of an oil seal and the like, therefore, the generator maintains constant rated hydrogen pressure, the stable operation of a generator set can be ensured, the hydrogen sealing is facilitated, and the safety of the system can be greatly improved.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a hydrogen production and supply system of a hydrogen cooling unit with a reasonable structural design and a working method thereof, and solves the problem that hydrogen is supplied to a rated pressure after hydrogen drops to a certain pressure by adopting an interval hydrogen supply mode at present. The hydrogen supplementing mode can cause hydrogen pressure instability and fluctuation, so that heat conduction instability and hydrogen sealing pressure fluctuation are caused, and the fluctuation of winding temperature and wind friction resistance can influence the energy conservation of the generator, the service life of winding and the oil leakage of oil seal and the like.
The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides a hydrogen cold machine group hydrogen manufacturing mends hydrogen system, includes water pitcher and controller, its characterized in that: the water tank is communicated with the ion purifier through a pipeline, the ion purifier is communicated with the filter through a pipeline, the filter is communicated with the PEM water electrolyzer through a pipeline, two poles of the PEM water electrolyzer are respectively communicated with the gas-liquid separator I and the gas-liquid separator II through pipelines, the gas-liquid separator I is communicated with the gas analyzer I through a pipeline, the gas analyzer I is communicated with the hydrogen tank through a pipeline, the hydrogen tank is communicated with the gas filter I through a pipeline, the gas filter I is communicated with the compressor I through a pipeline, the compressor I is communicated with the drying tower I through a pipeline, the drying tower I is respectively communicated with the low-pressure hydrogen storage tank and the high-pressure hydrogen gas cylinder group through pipelines, the low-pressure hydrogen storage tank is communicated with the hydrogen-cooled generator set through a pipeline, the gas-liquid separator II is communicated with the gas analyzer II through a, the oxygen tank is communicated with a second gas filter through a pipeline, the second gas filter is communicated with a second compressor through a pipeline, the second compressor is communicated with a second drying tower through a pipeline, oxygen in the second drying tower can be made into a compressed oxygen product, the second drying tower is communicated with a high-pressure oxygen cylinder set through a pipeline, and the controller is respectively electrically connected with electrical equipment in the whole system.
Further, a water outlet of the first gas-liquid separator is communicated with the water tank through a pipeline.
Further, the water outlet of the gas-liquid separator II is communicated with the water tank through a pipeline.
Furthermore, the gas-liquid separator is communicated with the cathode of the PEM water electrolyzer through a pipeline.
Further, the gas-liquid separator is communicated with the anode of the PEM water electrolyzer through a pipeline.
Furthermore, a first electromagnetic valve is arranged on a pipeline between the first gas analyzer and the hydrogen tank, and a second electromagnetic valve is arranged on a pipeline between the second gas analyzer and the oxygen tank.
The working method comprises the following steps: softened water enters an ion purifier for purification from a water tank through a pipeline, the purified water enters a filter for filtration through a pipeline, the filtered water enters a PEM water electrolysis tank, water is electrolyzed in the PEM water electrolysis tank, hydrogen is generated at the cathode of the PEM water electrolysis tank, oxygen is generated at the anode, the hydrogen enters a gas-liquid separator I through a pipeline for gas-liquid separation, the separated hydrogen enters a gas analyzer I through a pipeline, liquid water returns to the water tank through a pipeline, the hydrogen enters the gas analyzer I for detection, after the pressure and the purity meet the standards, an electromagnetic valve I is opened, the hydrogen enters a hydrogen tank through a pipeline, then enters the gas filter I through a pipeline for filtration, the filtered hydrogen enters a compressor I for compression, the compressed hydrogen enters a drying tower I through a pipeline for drying, and the dried hydrogen enters a low-pressure hydrogen storage tank and a high-pressure hydrogen gas bottle group through pipelines respectively, hydrogen in the low-pressure hydrogen storage tank enters a hydrogen-cooled generator set through a pipeline to cool the hydrogen-cooled generator set, hydrogen in the high-pressure hydrogen gas cylinder set is stored to be used as a hydrogen product, oxygen generated by the anode of the PEM water electrolyzer enters a gas-liquid separator II through a pipeline to be subjected to gas-liquid separation, the separated oxygen enters a gas analyzer II through a pipeline, wherein the liquid water returns to the water tank through the pipeline, the oxygen enters the gas analyzer II for detection, the electromagnetic valve II is opened after the pressure and the purity meet the standard, the oxygen enters the oxygen tank through the pipeline, and then the oxygen enters a second gas filter through a pipeline for filtering, the filtered oxygen enters a second compressor for compression, the compressed oxygen enters a second drying tower for drying through a pipeline, and the dried oxygen respectively enters a high-pressure oxygen cylinder group through a pipeline to prepare a compressed oxygen product.
Compared with the prior art, the invention has the following advantages and effects: the system provides a water electrolysis hydrogen production process scheme based on a Proton Exchange Membrane (PEM), which can replace the original interval hydrogen supplement mode, and the PEM water electrolysis hydrogen production system adopts a direct hydrogen supplement mode to keep the purity of hydrogen constant and the pressure of hydrogen stable, thereby realizing the optimization of hydrogen pressure and purity and contributing to the energy conservation of a generator and the guarantee of the maximum power generation load; the controller records data online, so that the pollution and leakage of water vapor, oxygen and other gases can be avoided; the fault accumulation in the interval of the manual hydrogen supplement can determine the real-time leakage amount through the record of the hydrogen supplement rate, the leakage fault calibration and detection are facilitated, the hydrogen production amount of the PEM water electrolyzer can be intelligently and continuously controlled from 0 to 100 percent, the PEM water electrolyzer can be directly connected with a generator, the automatic hydrogen supplement is realized, the stable operation of a generator set can be ensured, the hydrogen sealing is facilitated, and the safety of the system can be greatly improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: the device comprises a water tank 1, an ion purifier 2, a filter 3, a PEM water electrolyzer 4, a first gas-liquid separator 5, a first gas analyzer 6, a first electromagnetic valve 7, a hydrogen tank 8, a first gas filter 9, a first compressor 10, a first drying tower 11, a low-pressure hydrogen storage tank 12, a hydrogen-cooled generator set 13, a high-pressure hydrogen gas cylinder set 14, a second gas-liquid separator 15, a second gas analyzer 16, a second electromagnetic valve 17, an oxygen tank 18, a second gas filter 19, a second compressor 20, a second drying tower 21, a compressed oxygen product 22, a high-pressure oxygen gas cylinder set 23 and a controller 24.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Referring to fig. 1, a hydrogen production and hydrogen supplement system of a hydrogen cooling unit comprises a water tank 1 and a controller 24, wherein the water tank 1 is communicated with an ion purifier 2 through a pipeline, the ion purifier 2 is communicated with a filter 3 through a pipeline, the filter 3 is communicated with a PEM water electrolysis bath 4 through a pipeline, two poles of the PEM water electrolysis bath 4 are respectively communicated with a gas-liquid separator I5 and a gas-liquid separator II 15 through pipelines, two poles of the PEM water electrolysis bath 4 are a cathode and an anode, the cathode can generate hydrogen, the anode can generate oxygen, the gas-liquid separator I5 is communicated with a gas analyzer I6 through a pipeline, the gas analyzer I6 is communicated with a hydrogen tank 8 through a pipeline, the hydrogen tank 8 is communicated with a gas filter I9 through a pipeline, the gas filter I9 is communicated with a compressor I10 through a pipeline, the compressor I10 is communicated with a drying tower I11 through a pipeline, the drying tower, the high-pressure hydrogen gas cylinder group 14 can store hydrogen gas for use, the low-pressure hydrogen storage tank 12 is communicated with the hydrogen-cooled generator set 13 through a pipeline, the hydrogen gas can be used for cooling the hydrogen-cooled generator set 13, the gas-liquid separator 15 is communicated with the gas analyzer 16 through a pipeline, the gas analyzer 16 is communicated with the oxygen tank 18 through a pipeline, the oxygen tank 18 is communicated with the gas filter 19 through a pipeline, the gas filter 19 is communicated with the compressor 20 through a pipeline, the compressor 20 is communicated with the drying tower 21 through a pipeline, oxygen in the drying tower 21 can be made into a compressed oxygen product 22, the compressed oxygen product 22 can be sold, the drying tower 21 is communicated with the high-pressure oxygen gas cylinder group 23 through a pipeline, the high-pressure oxygen gas cylinder group 23 can store the oxygen gas for use or sale, the controller 24 is respectively electrically connected with electrical equipment in the whole system, and the controller 24 can control the electrical equipment in the whole system.
Specifically, a water outlet of the first gas-liquid separator 5 is communicated with the water tank 1 through a pipeline, and water separated from the hydrogen can flow back into the water tank 1. The water outlet of the gas-liquid separator 15 is communicated with the water tank 1 through a pipeline, and water separated from the oxygen can flow back into the water tank 1. The first gas-liquid separator 5 is communicated with the cathode of the PEM water electrolyzer 4 through a pipeline, and the cathode of the PEM water electrolyzer 4 can generate hydrogen. The gas-liquid separator 15 is communicated with the anode of the PEM water electrolyzer 4 through a pipeline, and the anode of the PEM water electrolyzer 4 can generate oxygen. A first electromagnetic valve 7 is arranged on a pipeline between the first gas analyzer 6 and the hydrogen tank 8, a second electromagnetic valve 17 is arranged on a pipeline between the second gas analyzer 16 and the oxygen tank 18, and the controller 24 can control the circulation of the hydrogen and the oxygen through the first electromagnetic valve 7 and the second electromagnetic valve 17.
The electrical components presented in the document are electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device for controlling a computer and the like.
The working method comprises the following steps: the controller 24 is electrically connected with all electrical equipment in the whole system and can control the whole device to run, the model of the controller 24 is an SC200 universal controller, the controller is a product in the prior art, softened water enters the ion purifier 2 from the water tank 1 through a pipeline for purification, the purified water enters the filter 3 through a pipeline for filtration, the filtered water enters the PEM water electrolysis tank 4, water is electrolyzed in the PEM water electrolysis tank 4, hydrogen is generated at the cathode of the PEM water electrolysis tank 4, oxygen is generated at the anode, the hydrogen enters the gas-liquid separator 5 through a pipeline for gas-liquid separation, the separated hydrogen enters the gas analyzer 6 through a pipeline, wherein liquid water returns to the water tank 1 through a pipeline, the hydrogen enters the gas analyzer 6 for detection, after the pressure and the purity meet the standards, the electromagnetic valve I7 is opened, the hydrogen enters the hydrogen tank 8 through a pipeline, then the hydrogen enters a gas filter I9 through a pipeline for filtering, the filtered hydrogen enters a compressor I10 for compression, the compressed hydrogen enters a drying tower I11 through a pipeline for drying, the dried hydrogen enters a low-pressure hydrogen storage tank 12 and a high-pressure hydrogen cylinder group 14 through pipelines respectively, the hydrogen in the low-pressure hydrogen storage tank 12 enters a hydrogen-cooled generator set 13 through a pipeline for cooling, the hydrogen in the high-pressure hydrogen cylinder group 14 can be stored for being used as a hydrogen product, oxygen generated by the anode of a PEM water electrolysis bath 4 enters a gas-liquid separator II 15 through a pipeline for gas-liquid separation, the separated oxygen enters a gas analyzer II 16 through a pipeline, liquid water returns to a water tank 1 through a pipeline, the oxygen enters the gas analyzer II 16 for detection, and after the pressure and the purity meet the standards, an electromagnetic valve II 17 is opened, oxygen enters an oxygen tank 18 through a pipeline, then enters a gas filter II 19 through the pipeline for filtering, the filtered oxygen enters a compressor II 20 for compression, the compressed oxygen enters a drying tower II 21 through the pipeline for drying, and the dried oxygen respectively enters a high-pressure oxygen cylinder group 23 through the pipeline and is made into a compressed oxygen product 22.
Those not described in detail in this specification are well within the skill of the art.
In addition, it should be noted that the above contents described in the present specification are only illustrations of the structures of the present invention. All equivalent variations of the structures, features and principles described in accordance with the present inventive concepts are included within the scope of the present invention. Those skilled in the art to which the invention relates will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.
Claims (5)
1. The utility model provides a hydrogen cold machine group hydrogen manufacturing mends hydrogen system, includes water pitcher (1) and controller (24), its characterized in that: the water tank (1) is communicated with the ion purifier (2) through a pipeline, the ion purifier (2) is communicated with the filter (3) through a pipeline, the filter (3) is communicated with the PEM water electrolyzer (4) through a pipeline, two poles of the PEM water electrolyzer (4) are respectively communicated with the gas-liquid separator I (5) and the gas-liquid separator II (15) through pipelines, water outlets of the gas-liquid separator I (5) and the gas-liquid separator II (15) are communicated with the water tank (1) through pipelines, the gas-liquid separator I (5) is communicated with the gas analyzer I (6) through a pipeline, the gas analyzer I (6) is communicated with the hydrogen tank (8) through a pipeline, the hydrogen tank (8) is communicated with the gas filter I (9) through a pipeline, the gas filter I (9) is communicated with the compressor I (10) through a pipeline, and the compressor I (10) is communicated with, drying tower (11) are respectively through pipeline intercommunication low pressure hydrogen storage tank (12) and high pressure hydrogen gas cylinder group (14), low pressure hydrogen storage tank (12) are through pipeline intercommunication hydrogen-cooled generating set (13), gas-liquid separator two (15) are through pipeline intercommunication gas analysis appearance two (16), gas analysis appearance two (16) are through pipeline intercommunication oxygen jar (18), oxygen jar (18) are through pipeline intercommunication gas filter two (19), gas filter two (19) are through pipeline intercommunication compressor two (20), compressor two (20) are through pipeline intercommunication drying tower two (21), drying tower two (21) are through pipeline intercommunication high pressure oxygen gas cylinder group (23), electrical equipment in the whole system is connected to controller (24) electricity respectively.
2. The hydrogen production and hydrogen supplement system of the hydrogen cooling unit according to claim 1, characterized in that: the first gas-liquid separator (5) is communicated with the cathode of the PEM water electrolyzer (4) through a pipeline.
3. The hydrogen production and hydrogen supplement system of the hydrogen cooling unit according to claim 1, characterized in that: the gas-liquid separator II (15) is communicated with the anode of the PEM water electrolyzer (4) through a pipeline.
4. The hydrogen production and hydrogen supplement system of the hydrogen cooling unit according to claim 1, characterized in that: a first electromagnetic valve (7) is installed on a pipeline between the first gas analyzer (6) and the hydrogen tank (8), and a second electromagnetic valve (17) is installed on a pipeline between the second gas analyzer (16) and the oxygen tank (18).
5. A working method of the hydrogen production and hydrogen supplement system of the hydrogen cooling unit as claimed in any one of claims 1 to 4, characterized in that: the process is as follows: softened water enters an ion purifier (2) for purification from a water tank (1) through a pipeline, the purified water enters a filter (3) for filtration through a pipeline, the filtered water enters a PEM water electrolysis tank (4), water is electrolyzed in the PEM water electrolysis tank (4), hydrogen is generated at the cathode of the PEM water electrolysis tank (4), oxygen is generated at the anode, the hydrogen enters a gas-liquid separator (5) through a pipeline for gas-liquid separation, the separated hydrogen enters a gas analyzer I (6) through a pipeline, liquid water returns to the water tank (1) through a pipeline, the hydrogen enters a gas analyzer I (6) for detection, a solenoid valve I (7) is opened after pressure and purity meet standards, the hydrogen enters a hydrogen tank (8) through a pipeline and then enters a gas filter I (9) through a pipeline for filtration, the filtered hydrogen enters a compressor I (10) for compression, the compressed hydrogen enters a drying tower I (11) through a pipeline for drying, the dried hydrogen enters a low-pressure hydrogen storage tank (12) and a high-pressure hydrogen gas cylinder group (14) through pipelines respectively, the hydrogen in the low-pressure hydrogen storage tank (12) enters a hydrogen-cooled generator set (13) through a pipeline for cooling, the hydrogen in the high-pressure hydrogen gas cylinder group (14) is stored for being used as a hydrogen product, oxygen generated by the anode of a PEM water electrolysis cell (4) enters a gas-liquid separator II (15) through a pipeline for gas-liquid separation, the separated oxygen enters a gas analyzer II (16) through a pipeline, liquid water returns to a water tank (1) through a pipeline, the oxygen enters the gas analyzer II (16) for detection, after the pressure and the purity meet the standards, an electromagnetic valve II (17) is opened, the oxygen enters an oxygen tank (18) through a pipeline, and then the oxygen enters a second gas filter (19) through a pipeline for filtering, the filtered oxygen enters a second compressor (20) for compressing, the compressed oxygen enters a second drying tower (21) through a pipeline for drying, and the dried oxygen respectively enters a high-pressure oxygen gas bottle group (23) through a pipeline to prepare a compressed oxygen product (22).
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| CN202011429385.5A CN112760666A (en) | 2020-12-09 | 2020-12-09 | Hydrogen production and hydrogen supplement system of hydrogen cooling unit and working method thereof |
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| CN202011429385.5A CN112760666A (en) | 2020-12-09 | 2020-12-09 | Hydrogen production and hydrogen supplement system of hydrogen cooling unit and working method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699537A (en) * | 2021-07-29 | 2021-11-26 | 中国船舶重工集团公司第七一八研究所 | Differential pressure type pure water electrolysis hydrogen production system |
| CN113803638A (en) * | 2021-07-30 | 2021-12-17 | 华电电力科学研究院有限公司 | Intelligent generator hydrogen cooling system and control method |
| CN114807959A (en) * | 2022-03-15 | 2022-07-29 | 中国船舶重工集团公司第七一八研究所 | High-efficiency hydrogen production system suitable for wide power fluctuation |
| CN115652331A (en) * | 2022-11-18 | 2023-01-31 | 天津锦美氢源科技发展有限公司 | Movable hydrogen production equipment and process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115652331A (en) * | 2022-11-18 | 2023-01-31 | 天津锦美氢源科技发展有限公司 | Movable hydrogen production equipment and process |
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Application publication date: 20210507 |