Hydrogen cooling generator hydrogen whole process control system and method

Abstract

A hydrogen cooling generator hydrogen whole process control system and method belong to hydrogen cooling generator technical field, solve how to maintain the pressure of hydrogen cooling generator, purity meets the operation requirement, reduces the problem of operation cost; One end of the hydrogen cooling generator is used as a gas end low pressure area A, the input end of the dehumidification module IV is connected with the gas end low pressure area A of the hydrogen cooling generator, the other end of the hydrogen cooling generator is used as a gas supplement end B, the output end of the purification module III is connected with the gas supplement end B of the hydrogen cooling generator, the hydrogen production module I, carbon dioxide gasification replacement module II and dehumidification module IV are all arranged on the air inlet pipeline of the hydrogen purification module III; The application realizes on-demand hydrogen production, avoids the leakage risk caused by hydrogen storage and long-distance hydrogen transportation; The whole process automatic operation and maintenance of hydrogen preparation, purity improvement and on-demand hydrogen supplement of the hydrogen cooling generator are realized, manual intervention is reduced, and operation economy is improved.

Description

Technical Field

[0001] This invention belongs to the technical field of hydrogen-cooled generators, and relates to a control system, control method, and hydrogen-cooled generator for the entire process of hydrogen production, replenishment, and purification. Background Technology

[0002] Hydrogen possesses excellent physicochemical properties such as low density, low ventilation loss, strong fluidity, high heat transfer capacity, and stable chemical properties, making it widely used in cooling the stator and rotor windings of hydrogen-cooled generators. As the core cooling medium for generators, the pressure and purity of hydrogen are crucial for ensuring cooling efficiency, maintaining safe operation, and extending the generator's lifespan. Hydrogen pressure directly affects cooling efficiency, generator output, and the stability of the sealing system, making it a critical parameter that requires real-time monitoring during operation and maintenance. For example, the power industry standard DL / T 2791—2024, "Operation and Maintenance Procedures for Hydrogen Systems in Hydrogen-Cooled Generators," stipulates that when the rated hydrogen pressure of a steam turbine generator is ≥0.3MPa, the recommended daily hydrogen leakage should be less than 11.5 Nm³ / d. Meanwhile, hydrogen purity directly affects generator losses and operation and maintenance costs; long-term operation of a generator with low hydrogen purity is extremely uneconomical. For example, Article 8.4.1b of DL / T 1164-2012 "Guidelines for the Operation of Steam Turbine Generators" states that "the purity of hydrogen in the generator, by volume, should be above 96%, and preferably above 98% to improve efficiency." Furthermore, the nationally published book "Design, Manufacturing and Operation of Large Steam Turbine Generators" states that "every 1% decrease in hydrogen purity leads to an 11% increase in ventilation losses" and "wind loss accounts for 20% of the theoretical power generation loss of the generator." This demonstrates that insufficient hydrogen purity significantly increases ventilation losses and reduces power generation efficiency. According to relevant literature, every 1% decrease in hydrogen purity increases generator power loss by 120kW.

[0003] In current technology, the control of hydrogen pressure and purity in generators is achieved through hydrogen replenishment and discharge. However, frequent manual operation cannot guarantee that the hydrogen pressure is constant or that the purity is maintained above 99% in real time, posing a potential threat to the safe operation of the unit and causing certain economic losses. Summary of the Invention

[0004] The technical problem to be solved by this invention is how to maintain the pressure and purity of hydrogen-cooled generators to meet operational requirements and reduce operating costs.

[0005] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0006] A hydrogen-cooled generator hydrogen production process control system includes: a hydrogen production module I, a carbon dioxide vaporization and replacement module II, a hydrogen purification module III, a hydrogen dehumidification module IV, and a control module; one end of the hydrogen-cooled generator serves as a low-pressure gas end A, the input end of the dehumidification module IV is connected to the low-pressure gas end A of the hydrogen-cooled generator, the other end of the hydrogen-cooled generator serves as a gas replenishment end B, the output end of the purification module III is connected to the gas replenishment end B of the hydrogen-cooled generator, and the hydrogen production module I, the carbon dioxide vaporization and replacement module II, and the dehumidification module IV are all installed on the gas inlet pipe of the hydrogen purification module III; The inlet pipeline of the hydrogen purification module III includes a second manual valve, a third manual valve, and a third check valve; the output end of the hydrogen production module I is connected to the output end of the carbon dioxide vaporization and replacement module II, and then connected to the input end of the third check valve; the output end of the dehumidification module IV is connected to the input end of the second manual valve; the output end of the second manual valve is connected to the output end of the third check valve, and then connected to the input end of the third manual valve; the output end of the third manual valve is connected to the purification module III. The control module includes a first pressure gauge, a first purity meter, and a first humidity meter connected to the hydrogen-cooled generator. The control module controls the start and stop of the hydrogen production module I, the carbon dioxide vaporization and replacement module II, the hydrogen purification module III, and the hydrogen dehumidification module IV respectively according to the actual hydrogen pressure, purity, and humidity of the hydrogen-cooled generator.

[0007] Furthermore, when the first pressure gauge detects that the hydrogen pressure is lower than the rated pressure, the control module calculates the amount of hydrogen required to replenish the hydrogen-cooled generator, sets the working program of the hydrogen production module I, starts the hydrogen production module I to start producing hydrogen, and the produced hydrogen is purified by the purification module III and then recharged to the gas replenishment end B of the hydrogen-cooled generator. When the first purity meter detects that the hydrogen purity of the hydrogen-cooled generator is lower than the lower purity limit, the control module sets the working program of the purification module III, starts the purification module III to purify the hydrogen from the low-pressure area A of the hydrogen-cooled generator gas end and after passing through the dehumidification module IV, and recharges it to the gas replenishment end B of the hydrogen-cooled generator until the hydrogen purity is raised to the target purity or above. When the first hygrometer detects that the current humidity is lower than the saturation humidity corresponding to the lowest temperature inside the hydrogen-cooled generator, the control module starts the dehumidification module IV to perform dehumidification by setting the working program of the dehumidification module IV.

[0008] Furthermore, the hydrogen production module I includes a first electric valve, a water treatment unit, a water tank, a first check valve, a first oxygen-water separator, a first cooler, an electrolyzer, a second oxygen-water separator, a deaerator, a second cooler, a second pressure gauge, a second purity meter, a second electric valve, a second check valve, a first flow meter, and a first manual valve; The first electric valve, water treatment unit, water tank, and first check valve are connected in sequence. The non-series end of the first electric valve serves as the input end of the hydrogen production module, connected to pure water. The output end of the first check valve is connected to the input end of the first oxygen-water separator. The two ends of the cooler are connected to the liquid outlet of the first oxygen-water separator and the water inlet of the electrolyzer, respectively. The anode outlet of the electrolyzer is connected to the input end of the first oxygen-water separator. The cathode outlet of the electrolyzer is connected to the input end of the second oxygen-water separator. The liquid outlet of the second oxygen-water separator is connected to the input end of the first oxygen-water separator. The gas outlet of the second oxygen-water separator is connected to the input end of the deaerator. The deaerator, second cooler, second pressure gauge, second purity meter, second electric valve, second check valve, first flow meter, and first manual valve are connected in sequence.

[0009] Furthermore, the carbon dioxide vaporization replacement module II includes a ninth manual valve, a fourth one-way valve, a third flow meter, a tenth pressure gauge, a tenth manual valve, a first thermometer, a heater, an eleventh manual valve, and a carbon dioxide cylinder connected in sequence.

[0010] Furthermore, the purification module III includes a pressurization component, a filtration component, and a membrane separation component connected in sequence; the membrane separation component includes a primary filtration unit, a secondary filtration unit, and a tertiary filtration unit; the permeate side of the primary filtration unit serves as the output end of the purification module III and is connected to the gas supply end B of the hydrogen-cooled generator; the non-permeate side of the primary filtration unit is connected to the input end of the secondary filtration unit; the permeate side of the secondary filtration unit is connected to the input end of the pressurization component; the non-permeate side of the secondary filtration unit is connected to the input end of the tertiary filtration unit; the permeate side of the tertiary filtration unit is connected to the input end of the pressurization component; and the non-permeate side of the tertiary filtration unit is connected to the input end of the primary filtration unit.

[0011] Furthermore, the pressurization assembly includes a third electric valve, a third purity meter, a third pressure gauge, and a compressor connected in sequence; The filtration assembly includes a fourth pressure gauge, a fourth electric valve, a first filter, a second filter, an activated carbon canister, a third filter, a fourth filter, and a fourth manual valve connected in sequence; the first filter, the second filter, the third filter, and the fourth filter are also provided with drain ports.

[0012] Furthermore, the primary filtration unit includes a fifth electric valve, a fifth pressure gauge, a primary filter membrane, a sixth electric valve, a sixth pressure gauge, and a fourth purity meter connected in sequence; the non-series end of the fifth electric valve serves as the input end of the primary filtration unit, receiving the hydrogen to be purified transmitted by the filter assembly or the tertiary filtration unit; the permeation side of the primary filter membrane is connected to the sixth electric valve; the non-series end of the fourth purity meter serves as the output end of the primary filtration unit and is connected to the gas supply end B of the hydrogen-cooled generator; and the non-permeation side of the primary filter membrane is connected to the input end of the secondary filtration unit. The secondary filtration unit includes a seventh electric valve, a seventh pressure gauge, a first and a second-stage filter membrane connected in sequence, and a second-stage filter membrane connected in parallel with the first and second-stage filter membrane. The input ends of the first and second-stage filter membranes are connected to the output end of the seventh pressure gauge. The permeable sides of the first and second-stage filter membranes are connected together and then connected to the input end of the third electric valve. The non-permeable sides of the first and second-stage filter membranes are connected together and then connected to the input end of the tertiary filtration unit. The three-stage filtration unit includes a fifth manual valve, an eighth pressure gauge, a three-stage filter membrane, a sixth manual valve, a second flow meter, a ninth pressure gauge, a fifth purity meter, an eighth electric valve, and a third check valve connected in sequence. The permeable side of the three-stage filter membrane is connected to the input end of the third electric valve, the non-permeable side of the three-stage filter membrane is connected to the sixth manual valve, and the output end of the third check valve is connected to the input end of the fifth electric valve.

[0013] Furthermore, the dehumidification module IV includes a first dehumidifier, a second dehumidifier, a twelfth manual valve, a thirteenth manual valve, a fourteenth manual valve, a fifteenth manual valve, a sixteenth manual valve, a seventeenth manual valve, and an eighteenth manual valve; The input end of the first dehumidifier is connected to the low-pressure area A of the hydrogen-cooled generator as the input end of the dehumidification module IV. The output end of the first dehumidifier is connected to the input end of the second dehumidifier. The output end of the second dehumidifier is connected to the twelfth manual valve, the thirteenth manual valve, and the fourteenth manual valve in sequence. The output end of the second dehumidifier is also connected to the input end of the first dehumidifier. The two ends of the fifteenth manual valve are respectively connected to the gas supply end B of the hydrogen-cooled generator and the output end of the thirteenth manual valve. The sixteenth manual valve and the eighteenth manual valve are connected in series. The non-series end of the sixteenth manual valve is connected to the fourth purity meter. The non-series end of the eighteenth manual valve is connected to the gas supply end B of the hydrogen-cooled generator. One end of the seventeenth manual valve is connected to the common point of the series connection of the sixteenth and eighteenth manual valves, and the other end of the seventeenth manual valve is vented.

[0014] The present invention also provides a control method based on the above-mentioned hydrogen-cooled generator hydrogen whole-process control system, comprising the following steps: Detect the pressure, purity, and humidity of the hydrogen system in a hydrogen-cooled generator; When the first pressure gauge detects that the hydrogen pressure is lower than the rated pressure, the control module calculates the amount of hydrogen to be added to the hydrogen-cooled generator. By setting the working program of the hydrogen production module I, the hydrogen production module I is started to produce hydrogen. The produced hydrogen is purified by the purification module III and then returned to the gas supply terminal B of the hydrogen-cooled generator. When the first purity meter detects that the hydrogen purity of the hydrogen-cooled generator is lower than the lower purity limit, the control module sets the working program of the purification module III, starts the purification module III to purify the hydrogen from the low-pressure area A of the hydrogen-cooled generator gas end and after passing through the dehumidification module IV, and recharges it to the gas replenishment end B of the hydrogen-cooled generator until the hydrogen purity is raised to the target purity or above. When the first hygrometer detects that the current humidity is lower than the saturation humidity corresponding to the lowest temperature inside the hydrogen-cooled generator, the control module starts the dehumidification module IV to perform dehumidification by setting the working program of the dehumidification module IV.

[0015] The present invention also provides a hydrogen-cooled generator, which adopts the above-mentioned hydrogen-cooled generator hydrogen whole-process control system. The low-pressure area of ​​the gas end of the hydrogen-cooled generator is connected to the input end of the hydrogen dehumidification module IV in the control system, and the gas replenishment end of the hydrogen-cooled generator is connected to the output end of the purification module III in the control system.

[0016] The advantages of this invention are: (1) This invention achieves fully automated operation and maintenance of hydrogen production, replenishment, and purification based on the hydrogen and hydrogen purity of the hydrogen-cooled generator. Hydrogen production and replenishment are only performed on demand, and no hydrogen storage or transportation is required for daily operation and maintenance. When the hydrogen pressure of the hydrogen-cooled generator drops and hydrogen replenishment is needed, hydrogen is produced by the hydrogen production section, and the hydrogen is purified by the hydrogen purification section and then recharged to the generator's replenishment end. When the hydrogen purity of the hydrogen-cooled generator is low, the hydrogen purification section is used to purify the hydrogen flowing out of the low-pressure area of ​​the hydrogen-cooled generator's gas end after passing through the dehumidification section. The purified hydrogen is then recharged to the generator's replenishment end, thus constructing a hydrogen production-purification-replenishment system. Through a collaborative and interconnected technical approach, this invention can produce hydrogen based on the amount of hydrogen replenishment needed, avoiding hydrogen leakage during hydrogen storage and long pipeline transportation. It achieves fully automated operation and maintenance of hydrogen preparation, purity enhancement, and on-demand hydrogen replenishment, reducing manual operation. At the same time, it ensures that the hydrogen pressure of the hydrogen-cooled generator meets the operating requirements, improves the hydrogen purity to over 99%, and achieves automated matching of precise hydrogen production and efficient purification. This ensures the safe, economical, efficient, and stable operation of the hydrogen-cooled generator and improves the economic benefits of the generator's hydrogen system. Furthermore, the control system of this invention is highly integrated and features a reasonable structure and simple operation.

[0017] (2) In this invention, hydrogen is first pressurized by a compressor, and oil impurities are removed by adsorption through a filter and an activated carbon canister. The hydrogen is then purified by three-stage filtration to achieve efficient separation of hydrogen molecules. The high-purity hydrogen separated is directly fed back to the hydrogen-cooled generator's gas supply end from the permeation side after being controlled by a valve. The hydrogen with more impurities on the non-permeation side is further purified by a secondary filter membrane. The gas purified by the exhaust gas from the primary filter membrane by two parallel secondary filter membranes flows into the pressurization component for pressurization and filtration again. The impurity gas discharged flows into the tertiary filter membrane. The gas with higher hydrogen content separated by the tertiary filter membrane flows into the purification pipeline after the third manual valve. The discharge flow rate of the impurity gas can be adjusted by adjusting the tenth manual valve in conjunction with the third flow meter. After the tertiary filter membrane, the impurity gases such as oxygen, nitrogen, and carbon dioxide are efficiently separated, and more than 99% of the hydrogen is recovered. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the hydrogen-cooled generator hydrogen whole-process control system according to Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the hydrogen production module according to Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the carbon dioxide vaporization replacement module according to Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the purification module according to Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the dehumidification module according to Embodiment 1 of the present invention; Figure label: Control module: 1. First pressure gauge; 2. First purity meter; 3. First hygrometer; Hydrogen Production Module I: 4. First electric valve; 5. Water treatment; 6. Water tank; 7. First check valve; 8. First oxygen-water separator; 9. First cooler; 10. Electrolyzer; 11. Second oxygen-water separator; 12. Deaerator; 13. Second cooler; 14. Second pressure gauge; 15. Second purity meter; 16. Second electric valve; 17. Second check valve; 18. First flow meter; 19. First manual valve; Intake piping: 20, Second manual valve; 21, Third manual valve; Purification Module III: 22. Third Electric Valve; 23. Third Purity Meter; 24. Third Pressure Gauge; 25. Compressor; 26. Fourth Pressure Gauge; 27. Fourth Electric Valve; 28. First Filter; 29. ​​Second Filter; 30. Activated Carbon Canister; 31. Third Filter; 32. Fourth Filter; 33. Fourth Manual Valve; 34. Fifth Electric Valve; 35. Fifth Pressure Gauge; 36. First-Stage Filter Membrane; 37. Sixth Electric Valve; 38. Sixth Pressure Gauge; 39. Fourth Purity Meter; 40. Seventh Electric Valve; 41. Seventh Pressure Gauge; 42. First and Second-Stage Filter Membranes; 43. Second and Second-Stage Filter Membranes; 44. Fifth Manual Valve; 45. Eighth Pressure Gauge; 46. Third-Stage Filter Membrane; 47. Sixth Manual Valve; 48. Second Flow Meter; 49. Ninth Pressure Gauge; 50. Fifth Purity Meter; 51. Eighth Electric Valve; 52. Third Check Valve; 53. Seventh Manual Valve; Intake line: 55, Eighth manual valve; Carbon dioxide vaporization replacement module II: 56. Ninth manual valve; 57. Fourth check valve; 58. Third flow meter; 59. Tenth pressure gauge; 60. Tenth manual valve; 61. First thermometer; 62. Heater; 63. Eleventh manual valve; 64. Carbon dioxide cylinder; Dehumidification Module IV: 65. First dehumidifier dryer; 66. Second dehumidifier dryer; 67. Twelfth manual valve; 68. Thirteenth manual valve; 69. Fourteenth manual valve; 70. Fifteenth manual valve; 71. Sixteenth manual valve; 72. Seventeenth manual valve; 73. Eighteenth manual valve. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments: Example 1 like Figure 1Specifically, a hydrogen-cooled generator hydrogen process control system is disclosed, including: a hydrogen production module I, a carbon dioxide vaporization and replacement module II, a hydrogen purification module III, a hydrogen dehumidification module IV, and a control module; one end of the hydrogen-cooled generator serves as the gas end low-pressure zone A, the input end of the dehumidification module IV is connected to the gas end low-pressure zone A of the hydrogen-cooled generator, the other end of the hydrogen-cooled generator serves as the gas replenishment end B, the output end of the purification module III is connected to the gas replenishment end B of the hydrogen-cooled generator, and the hydrogen production module I, the carbon dioxide vaporization and replacement module II, and the dehumidification module IV are all installed on the gas inlet pipe of the hydrogen purification module III; The inlet pipeline of the hydrogen purification module III includes a second manual valve 20, a third manual valve 21, and a third check valve 55; the output end of the hydrogen production module I is connected to the output end of the carbon dioxide vaporization and replacement module II, and then connected to the input end of the third check valve 55; the output end of the dehumidification module IV is connected to the input end of the second manual valve 20; the output end of the second manual valve 20 is connected to the output end of the third check valve 55, and then connected to the input end of the third manual valve 21; the output end of the third manual valve 21 is connected to the purification module III. The control module includes a first pressure gauge 1, a first purity meter 2, and a first hygrometer 3 connected to the hydrogen-cooled generator. Based on the actual hydrogen pressure, purity, and humidity of the hydrogen-cooled generator, the control module controls the start and stop of the hydrogen production module I, the carbon dioxide vaporization and replacement module II, the hydrogen purification module III, and the hydrogen dehumidification module IV, respectively, to achieve automatic coordinated operation of hydrogen replenishment, purification, and dehumidification. Specifically, this includes the following: Hydrogen replenishment mode: When the first pressure gauge 1 detects that the hydrogen pressure is lower than the rated pressure, the control module calculates the amount of hydrogen required to replenish the hydrogen-cooled generator. By setting the working program of the hydrogen production module I, the hydrogen production module I is started to produce hydrogen. The produced hydrogen is purified by the purification module III and then recharged to the replenishment terminal B of the hydrogen-cooled generator.

[0021] In a preferred embodiment, when the hydrogen pressure of the hydrogen-cooled generator is more than 0.05 MPa lower than the internal cooling water stator pressure, the hydrogen pressure is considered to be lower than the rated pressure of the hydrogen-cooled generator.

[0022] Purification mode: When the first purity meter 2 detects that the hydrogen purity of the hydrogen-cooled generator is lower than the lower purity limit, the control module starts the purification module III by setting the working program of the purification module III to purify the hydrogen from the low-pressure area A of the hydrogen-cooled generator gas end and after passing through the dehumidification module IV, and then recharges it to the gas replenishment end B of the hydrogen-cooled generator until the hydrogen purity is raised to the target purity or above.

[0023] In a preferred embodiment, the lower limit of hydrogen purity is set to 98% and the target purity is set to 99%. When the first purity meter 2 detects that the hydrogen purity is lower than 98%, the purification module III is started; when the detected hydrogen purity increases to 99% or above, the purification module III stops operating.

[0024] Dehumidification mode: When the first hygrometer 3 detects that the current humidity is lower than the saturation humidity corresponding to the lowest temperature inside the hydrogen-cooled generator, the control module starts the dehumidification module IV to perform dehumidification by setting the working program of the dehumidification module IV.

[0025] In a preferred embodiment, the minimum temperature is 5°C lower than the minimum temperature inside the hydrogen-cooled generator, at which point the control module filters the moisture in the hydrogen by activating the dehumidification module IV.

[0026] Furthermore, it also includes a gas replacement mode: when the hydrogen-cooled generator requires gas replacement (such as before shutdown maintenance), the control module activates the carbon dioxide vaporization replacement module II by setting its operating program. This embodiment utilizes the hydrogen production module I, carbon dioxide vaporization replacement module II, hydrogen purification module III, and hydrogen dehumidification module IV in conjunction to ensure that the hydrogen pressure of the hydrogen-cooled generator meets operational requirements, improves hydrogen purity, and achieves automated matching of precise hydrogen production and efficient purification, ensuring the safe, economical, efficient, and stable operation of the hydrogen-cooled generator. Specifically, each module from hydrogen production module I to hydrogen dehumidification module IV is described in detail: The hydrogen production module I includes a first electric valve 4, a water treatment unit 5, a water tank 6, a first check valve 7, a first oxygen-water separator 8, a first cooler 9, an electrolytic cell 10, a second oxygen-water separator 11, a deaerator 12, a second cooler 13, a second pressure gauge 14, a second purity meter 15, a second electric valve 16, a second check valve 17, a first flow meter 18, and a first manual valve 19. like Figure 2 As shown, the first electric valve 4, water treatment 5, water tank 6, and first check valve 7 are connected in sequence. The non-series end of the first electric valve 4 serves as the input end of the hydrogen production module, connected to pure water. The output end of the first check valve 7 is connected to the input end of the first oxygen-water separator 8. The two ends of the cooler 9 are connected to the liquid outlet of the first oxygen-water separator 8 and the water inlet of the electrolytic cell 10, respectively. The anode side outlet of the electrolytic cell 10 is connected to the input end of the first oxygen-water separator 8. The cathode side outlet of the electrolytic cell 10 is connected to the input end of the second oxygen-water separator 11. The liquid outlet of the second oxygen-water separator 11 is connected to the input end of the first oxygen-water separator 8. The gas outlet of the second oxygen-water separator 11 is connected to the input end of the deaerator 12. The deaerator 12, second cooler 13, second pressure gauge 14, second purity meter 15, second electric valve 16, second check valve 17, first flow meter 18, and first manual valve 19 are connected in sequence.

[0027] In a preferred embodiment, the electrolyzer 10 is a PEM electrolyzer, and the water treatment 5 is specifically a pure water preparation device that treats tap water or industrial water into deionized water or high-purity water that meets the requirements of the PEM electrolyzer.

[0028] In this embodiment, when the hydrogen-cooled generator needs hydrogen replenishment, the hydrogen production module I is started. Specifically, the first electric valve 4 is opened, and the PEM electrolyzer 10 is started to electrolyze water to produce hydrogen. Pure water first flows into the first oxygen-water separator 8, where the gas in the water is initially separated. It flows out from the liquid outlet and is cooled by the cooler 9 before flowing into the electrolyzer 10. After the electrolyzer 10 is energized, oxygen and hydrogen ions are generated at the anode. The hydrogen ions pass through the proton exchange membrane to the cathode and combine with electrons to generate hydrogen gas. Since the hydrogen gas will carry water vapor, it flows into the second oxygen-water separator 11 for gas-liquid separation. The separated oxygen, water vapor, etc., flow back into the first oxygen-water separator 8 for separation and discharge of oxygen. The water vapor then participates in the electrolysis of water to produce hydrogen again. The produced hydrogen gas is processed by oxygen-water separation, deoxygenation, cooling, and drying, and then output through pipelines. Once the hydrogen production meets the calculated hydrogen replenishment amount, the first electric valve 4 is closed to stop hydrogen production.

[0029] The carbon dioxide vaporization replacement module II includes a ninth manual valve 56, a fourth one-way valve 57, a third flow meter 58, a tenth pressure gauge 59, a tenth manual valve 60, a first thermometer 61, a heater 62, an eleventh manual valve 63, and a carbon dioxide cylinder 64 connected in sequence.

[0030] In this embodiment, when gas replacement is required for the hydrogen-cooled generator and its auxiliary pipelines (such as before shutdown for maintenance), since the carbon dioxide vaporization replacement module II is connected to other functional modules, carbon dioxide is first used to replace the hydrogen in the entire generator system, and then air is used to replace the carbon dioxide, thus achieving gas replacement of the entire system. Specifically, the control module activates the carbon dioxide vaporization replacement module II, opens the eleventh manual valve 63, and opens the carbon dioxide cylinder 64. First, the outlet gas temperature is set. The heater 62 fully heats and vaporizes the liquid CO2 to prevent low-temperature liquid CO2 from directly entering the pipeline, which could cause pipeline brittleness or valve damage. The first thermometer 61 monitors the temperature of the vaporized CO2 to ensure it reaches the set value. After the carbon dioxide flowing from the carbon dioxide cylinder 64 is fully vaporized by the heater 62, it flows through the fourth one-way valve 57 and the eleventh manual valve 63 into the inlet pipeline (between the first manual valve 19 and the second manual valve 20 in the figure) to prevent gas in the pipeline from flowing back into the carbon dioxide vaporization replacement module II pipeline, thus connecting and replacing the hydrogen in the entire hydrogen-cooled generator system. Simultaneously, the flow rate of the vaporized CO2 is adjusted by adjusting the tenth manual valve 60, and the third flow meter 58 is used to measure the total amount of CO2 introduced to determine whether the replacement is sufficient.

[0031] The purification module III includes a pressurization assembly, a filtration assembly, and a membrane separation assembly connected in sequence. The membrane separation assembly includes a primary filtration unit, a secondary filtration unit, and a tertiary filtration unit. The permeate side of the primary filtration unit serves as the output terminal of the purification module III and is connected to the gas supply terminal B of the hydrogen-cooled generator. The non-permeate side of the primary filtration unit is connected to the input terminal of the secondary filtration unit. The permeate side of the secondary filtration unit is connected to the input terminal of the pressurization assembly. The non-permeate side of the secondary filtration unit is connected to the input terminal of the tertiary filtration unit. The permeate side of the tertiary filtration unit is connected to the input terminal of the pressurization assembly. The non-permeate side of the tertiary filtration unit is connected to the input terminal of the primary filtration unit. Further detailed description of each component of the purification module III follows: The pressurization assembly includes a third electric valve 22, a third purity meter 23, a third pressure gauge 24, and a compressor 25 connected in sequence.

[0032] In this embodiment, the pressurization assembly is used to receive hydrogen for purification from the hydrogen production module I, the carbon dioxide vaporization and replacement module II, the hydrogen dehumidification module IV, and the hydrogen purification module III. The third purity meter 23 and the third pressure gauge 24 are used to detect the purity and pressure of the hydrogen entering the pressurization assembly, respectively.

[0033] The filtration assembly includes a fourth pressure gauge 26, a fourth electric valve 27, a first filter 28, a second filter 29, an activated carbon canister 30, a third filter 31, a fourth filter 32, and a fourth manual valve 33 connected in sequence. The first filter 28, the second filter 29, the third filter 31, and the fourth filter 32 are also provided with drain ports, through which particulate impurities in the gas flowing through the activated carbon canister 30 are filtered.

[0034] The primary filtration unit includes a fifth electric valve 34, a fifth pressure gauge 35, a primary filter membrane 36, a sixth electric valve 37, a sixth pressure gauge 38, and a fourth purity meter 39 connected in sequence. The non-series end of the fifth electric valve 34 serves as the input end of the primary filtration unit, receiving the hydrogen to be purified from the filter assembly or the tertiary filtration unit. The permeation side of the primary filter membrane 36 is connected to the sixth electric valve 37. The non-series end of the fourth purity meter 39 serves as the output end of the primary filtration unit and is connected to the gas supply end B of the hydrogen-cooled generator. The non-permeation side of the primary filter membrane 36 is connected to the input end of the secondary filtration unit.

[0035] The secondary filtration unit includes a seventh electric valve 40, a seventh pressure gauge 41, a first secondary filter membrane 42 connected in sequence, and a second secondary filter membrane 43 connected in parallel with the first secondary filter membrane 42. The input ends of the first secondary filter membrane 42 and the second secondary filter membrane 43 are connected to the output end of the seventh pressure gauge 41. The permeable sides of the first secondary filter membrane 42 and the second secondary filter membrane 43 are connected together and then connected to the input end of the third electric valve 22. The non-permeable sides of the first secondary filter membrane 42 and the second secondary filter membrane 43 are connected together and then connected to the input end of the tertiary filtration unit.

[0036] The three-stage filtration unit includes a fifth manual valve 44, an eighth pressure gauge 45, a three-stage filter membrane 46, a sixth manual valve 47, a second flow meter 48, a ninth pressure gauge 49, a fifth purity meter 50, an eighth electric valve 51, and a third one-way valve 52 connected in sequence. The permeable side of the three-stage filter membrane 46 is connected to the input end of the third electric valve 22, the non-permeable side of the three-stage filter membrane 46 is connected to the sixth manual valve 47, and the output end of the third one-way valve 52 is connected to the input end of the fifth electric valve 34.

[0037] Furthermore, it also includes a seventh manual valve 53, one end of which is connected to the output end of the third one-way valve 52, and the other end of the seventh manual valve 53 is vented (released) to replace gas or to achieve rapid replacement during venting.

[0038] In this embodiment, the hydrogen purification sequence of the hydrogen purification module III is as follows: the pressurization component first pressurizes the hydrogen using compressor 25, removes oil impurities by adsorption through filter and activated carbon canister 30, and then purifies the hydrogen through three-stage filtration to achieve efficient separation of hydrogen molecules; the separated high-purity hydrogen is directly returned to the hydrogen-cooled generator's gas supply end B from the permeation side after being controlled by a valve, while the hydrogen containing more impurities on the non-permeation side enters the secondary filter membrane for further purification; the gas after the exhaust gas discharged from the primary filter membrane 36 by the two parallel secondary filter membranes flows into the pressurization component for re-pressurization and filtration, while the discharged impurity gas flows into the tertiary filter membrane 46 for treatment, and the gas with a higher hydrogen content separated by the tertiary filter membrane 46 flows into the purification pipeline after the third manual valve 21; by adjusting the sixth manual valve 47 in conjunction with the second flow meter 48, the discharge flow rate of the impurity gas can be adjusted. After treatment by the tertiary filter membrane 46, efficient separation of impurity gases such as oxygen, nitrogen, and carbon dioxide is achieved, and more than 99% of the hydrogen is recovered.

[0039] On the other hand, in addition to filtering out impurity gases, the multi-stage filtration unit in this embodiment is also designed to improve the hydrogen gas recovery rate. If a large amount of hydrogen is discharged, frequent hydrogen replenishment is still required. However, this embodiment can ensure that most of the discharged gases are impurity gases such as nitrogen and oxygen through three-stage filtration, which not only improves the purity of the gas but also reduces the amount of hydrogen discharged, thereby reducing the amount of hydrogen replenishment and reducing the frequency of on-site manual operation.

[0040] Furthermore, in this embodiment, the connection points of each stage of the filtration unit can be used as hydrogen sampling points. The effectiveness of hydrogen purification is judged based on the sampling results. By adjusting the flow rate of the discharged impurity gas, the amount of gas to be returned for further purification is determined, thereby achieving the goal of discharging impurity gas and improving hydrogen purity. In this embodiment, each pipeline is equipped with multiple manual and electric valves to ensure the safety of hydrogen use.

[0041] In a preferred embodiment, the primary filter membrane 36, the first secondary filter membrane 42, the second secondary filter membrane 43, and the tertiary filter membrane 46 are palladium membranes.

[0042] The dehumidification module IV includes a first dehumidifier 65, a second dehumidifier 66, a twelfth manual valve 67, a thirteenth manual valve 68, a fourteenth manual valve 69, a fifteenth manual valve 70, a sixteenth manual valve 71, a seventeenth manual valve 72, and an eighteenth manual valve 73. The input end of the first dehumidifier 65 is connected to the low-pressure area A of the hydrogen-cooled generator as the input end of the dehumidification module IV. The output end of the first dehumidifier 65 is connected to the input end of the second dehumidifier 66. The output end of the second dehumidifier 66 is connected in sequence to the twelfth manual valve 67, the thirteenth manual valve 68, and the fourteenth manual valve 69. The output end of the second dehumidifier 66 is also connected to the input end of the first dehumidifier 65. The two ends of the fifteenth manual valve 70 are respectively connected to the gas supply end B of the hydrogen-cooled generator and the output end of the thirteenth manual valve 68. The sixteenth manual valve 71 and the eighteenth manual valve 73 are connected in series. The non-series end of the sixteenth manual valve 71 is connected to the fourth purity meter 39. The non-series end of the eighteenth manual valve 73 is connected to the gas supply end B of the hydrogen-cooled generator. One end of the seventeenth manual valve 72 is connected to the common point of the series connection of the sixteenth manual valve 71 and the eighteenth manual valve 73. The other end of the seventeenth manual valve 72 is vented.

[0043] In this embodiment, the hydrogen flowing out from the low-pressure zone A at the gas end of the hydrogen-cooled generator passes through two dehumidifiers in the dehumidification module IV to remove moisture before entering the subsequent purification module or being directly replenished through the feedback loop. The hydrogen can also be vented by switching the manual valve.

[0044] On the other hand, the gas containing moisture first flows through the first dehumidifier 65 for preliminary drying and then enters the second dehumidifier 66 for deep drying. The outlet of the second dehumidifier 66 is divided into two paths: one path is output as dehumidified gas to the next functional module, and the other path is returned to the first dehumidifier 65. The returned dry gas can dilute the moisture content of the inlet moisture, so that the first dehumidifier 65 can handle more moisture with the same adsorption capacity. In addition, the first dehumidifier 65 and the second dehumidifier 66 can switch the working state of each dryer through a bypass valve to realize the dual-tower alternating adsorption and regeneration working state of the first dehumidifier 65 working and the second dehumidifier 66 regenerating, or the first dehumidifier 65 regenerating and the second dehumidifier 66 working.

[0045] Corresponding to the aforementioned hydrogen-cooled generator hydrogen process control system, the present invention also provides a hydrogen-cooled generator hydrogen process control method, comprising the following steps: Detect the pressure, purity, and humidity of the hydrogen system in a hydrogen-cooled generator; When the first pressure gauge 1 detects that the hydrogen pressure is lower than the rated pressure, the control module calculates the amount of hydrogen to be added to the hydrogen-cooled generator. By setting the working program of the hydrogen production module I, the hydrogen production module I is started to produce hydrogen. The produced hydrogen is purified by the purification module III and then returned to the gas supply terminal B of the hydrogen-cooled generator. When the first purity meter 2 detects that the hydrogen purity of the hydrogen-cooled generator is lower than the lower purity limit, the control module sets the working program of the purification module III, starts the purification module III to purify the hydrogen from the low-pressure area A of the hydrogen-cooled generator gas end and after passing through the dehumidification module IV, and recharges it to the gas replenishment end B of the hydrogen-cooled generator until the hydrogen purity is raised to the target purity or above. When the first hygrometer 3 detects that the current humidity is lower than the saturation humidity corresponding to the lowest temperature inside the hydrogen-cooled generator, the control module starts the dehumidification module IV to dehumidify by setting the working program of the dehumidification module IV.

[0046] The present invention also provides a hydrogen-cooled generator, which adopts the above-mentioned hydrogen-cooled generator hydrogen whole-process control system. The low-pressure area of ​​the gas end of the hydrogen-cooled generator is connected to the input end of the hydrogen dehumidification module IV in the control system, and the gas replenishment end of the hydrogen-cooled generator is connected to the output end of the purification module III in the control system.

[0047] In the description of this specification, references to terms such as "in a preferred embodiment," "preferred," "in this embodiment," "specific," or "furthermore," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0048] In the description of this specification, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the invention.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this specification, unless otherwise stated, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydrogen-cooled generator hydrogen process control system, characterized in that, include: The system consists of a hydrogen production module I, a carbon dioxide vaporization and replacement module II, a hydrogen purification module III, a dehumidification module IV, and a control module. One end of the hydrogen-cooled generator serves as the low-pressure gas section A. The input end of the dehumidification module IV is connected to the low-pressure gas section A of the hydrogen-cooled generator. The other end of the hydrogen-cooled generator serves as the gas replenishment end B. The output end of the purification module III is connected to the gas replenishment end B of the hydrogen-cooled generator. The hydrogen production module I, the carbon dioxide vaporization and replacement module II, and the dehumidification module IV are all installed on the gas inlet pipe of the hydrogen purification module III. The inlet pipeline of the hydrogen purification module III includes a second manual valve (20), a third manual valve (21), and a third check valve (52); the output end of the hydrogen production module I is connected to the output end of the carbon dioxide vaporization and replacement module II, and then connected to the input end of the third check valve (52); the output end of the dehumidification module IV is connected to the input end of the second manual valve (20); the output end of the second manual valve (20) is connected to the output end of the third check valve (52), and then connected to the input end of the third manual valve (21); the output end of the third manual valve (21) is connected to the purification module III. The control module includes a first pressure gauge (1), a first purity meter (2), and a first humidity meter (3) connected to the hydrogen-cooled generator. The control module controls the start and stop of the hydrogen production module I, the carbon dioxide vaporization and replacement module II, the hydrogen purification module III, and the dehumidification module IV respectively according to the actual hydrogen pressure, purity, and humidity of the hydrogen-cooled generator.

2. The hydrogen-cooled generator hydrogen process control system according to claim 1, characterized in that, When the first pressure gauge (1) detects that the hydrogen pressure is lower than the rated pressure, the control module calculates the amount of hydrogen to be added to the hydrogen-cooled generator, sets the working program of the hydrogen production module I, starts the hydrogen production module I to start producing hydrogen, and the produced hydrogen is purified by the purification module III and then recharged to the gas supply end B of the hydrogen-cooled generator. When the first purity meter (2) detects that the hydrogen purity of the hydrogen-cooled generator is lower than the lower limit of purity, the control module sets the working program of the purification module III, starts the purification module III to purify the hydrogen from the low-pressure area A of the hydrogen-cooled generator gas end and after passing through the dehumidification module IV, and recharges it to the gas replenishment end B of the hydrogen-cooled generator until the hydrogen purity is raised to the target purity or above. When the first hygrometer (3) detects that the current humidity is lower than the saturation humidity corresponding to the lowest temperature inside the hydrogen-cooled generator, the control module starts the dehumidification module IV to dehumidify by setting the working program of the dehumidification module IV.

3. The hydrogen-cooled generator hydrogen process control system according to claim 1, characterized in that, The hydrogen production module I includes a first electric valve (4), a water treatment unit (5), a water tank (6), a first check valve (7), a first oxygen-water separator (8), a first cooler (9), an electrolyzer (10), a second oxygen-water separator (11), a deaerator (12), a second cooler (13), a second pressure gauge (14), a second purity meter (15), a second electric valve (16), a second check valve (17), a first flow meter (18), and a first manual valve (19). The first electric valve (4), water treatment (5), water tank (6), and first one-way valve (7) are connected in sequence. The non-series end of the first electric valve (4) is connected to pure water as the input end of the hydrogen production module. The output end of the first one-way valve (7) is connected to the input end of the first oxygen-water separator (8). The two ends of the cooler are connected to the liquid outlet of the first oxygen-water separator (8) and the water inlet of the electrolytic cell (10), respectively. The anode side outlet of the electrolytic cell (10) is connected to the input end of the first oxygen-water separator (8). The cathode side outlet is connected to the input end of the second oxygen-water separator (11), the liquid outlet of the second oxygen-water separator (11) is connected to the input end of the first oxygen-water separator (8), the gas outlet of the second oxygen-water separator (11) is connected to the input end of the deaerator (12), and the deaerator (12), the second cooler (13), the second pressure gauge (14), the second purity meter (15), the second electric valve (16), the second check valve (17), the first flow meter (18), and the first manual valve (19) are connected in sequence.

4. The hydrogen-cooled generator hydrogen process control system according to claim 1, characterized in that, The carbon dioxide vaporization replacement module II includes a ninth manual valve (56), a fourth one-way valve (57), a third flow meter (58), a tenth pressure gauge (59), a tenth manual valve (60), a first thermometer (61), a heater (62), an eleventh manual valve (63), and a carbon dioxide cylinder (64) connected in sequence.

5. The hydrogen-cooled generator hydrogen process control system according to claim 1, characterized in that, The purification module III includes a pressurization component, a filtration component, and a membrane separation component connected in sequence. The membrane separation component includes a primary filtration unit, a secondary filtration unit, and a tertiary filtration unit. The permeate side of the primary filtration unit serves as the output terminal of the purification module III and is connected to the gas supply terminal B of the hydrogen-cooled generator. The non-permeate side of the primary filtration unit is connected to the input terminal of the secondary filtration unit. The permeate side of the secondary filtration unit is connected to the input terminal of the pressurization component. The non-permeate side of the secondary filtration unit is connected to the input terminal of the tertiary filtration unit. The permeate side of the tertiary filtration unit is connected to the input terminal of the pressurization component. The non-permeate side of the tertiary filtration unit is connected to the input terminal of the primary filtration unit.

6. The hydrogen-cooled generator hydrogen process control system according to claim 5, characterized in that, The pressurization assembly includes a third electric valve (22), a third purity meter (23), a third pressure gauge (24), and a compressor (25) connected in sequence. The filter assembly includes a fourth pressure gauge (26), a fourth electric valve (27), a first filter (28), a second filter (29), an activated carbon canister (30), a third filter (31), a fourth filter (32), and a fourth manual valve (33) connected in sequence; the first filter (28), the second filter (29), the third filter (31), and the fourth filter (32) are also provided with drain outlets.

7. The hydrogen-cooled generator hydrogen process control system according to claim 5, characterized in that, The primary filtration unit includes a fifth electric valve (34), a fifth pressure gauge (35), a primary filter membrane (36), a sixth electric valve (37), a sixth pressure gauge (38), and a fourth purity meter (39) connected in sequence. The non-series end of the fifth electric valve (34) serves as the input end of the primary filtration unit, receiving the hydrogen to be purified transmitted by the filter assembly or the tertiary filtration unit. The permeation side of the primary filter membrane (36) is connected to the sixth electric valve (37). The non-series end of the fourth purity meter (39) serves as the output end of the primary filtration unit and is connected to the gas supply end B of the hydrogen-cooled generator. The non-permeation side of the primary filter membrane (36) is connected to the input end of the secondary filtration unit. The secondary filtration unit includes a seventh electric valve (40), a seventh pressure gauge (41), a first secondary filter membrane (42) connected in sequence, and a second secondary filter membrane (43) connected in parallel with the first secondary filter membrane (42). The input ends of the first secondary filter membrane (42) and the second secondary filter membrane (43) are connected to the output end of the seventh pressure gauge (41). The permeable sides of the first secondary filter membrane (42) and the second secondary filter membrane (43) are connected together and then connected to the input end of the third electric valve (22). The non-permeable sides of the first secondary filter membrane (42) and the second secondary filter membrane (43) are connected together and then connected to the input end of the tertiary filtration unit. The three-stage filtration unit includes a fifth manual valve (44), an eighth pressure gauge (45), a three-stage filter membrane (46), a sixth manual valve (47), a second flow meter (48), a ninth pressure gauge (49), a fifth purity meter (50), an eighth electric valve (51), and a third check valve (52) connected in sequence. The permeation side of the three-stage filter membrane (46) is connected to the input end of the third electric valve (22), the non-permeation side of the three-stage filter membrane (46) is connected to the sixth manual valve (47), and the output end of the third check valve (52) is connected to the input end of the fifth electric valve (34).

8. The hydrogen-cooled generator hydrogen process control system according to claim 1, characterized in that, The dehumidification module IV includes a first dehumidifier (65), a second dehumidifier (66), a twelfth manual valve (67), a thirteenth manual valve (68), a fourteenth manual valve (69), a fifteenth manual valve (70), a sixteenth manual valve (71), a seventeenth manual valve (72), and an eighteenth manual valve (73). The input end of the first dehumidifier (65) is connected to the low-pressure area A of the gas end of the hydrogen-cooled generator as the input end of the dehumidification module IV. The output end of the first dehumidifier (65) is connected to the input end of the second dehumidifier (66). The output end of the second dehumidifier (66) is connected to the twelfth manual valve (67), the thirteenth manual valve (68), and the fourteenth manual valve (69) in sequence. The output end of the second dehumidifier (66) is also connected to the input end of the first dehumidifier (65). The two ends of the fifteenth manual valve (70) are respectively connected to the gas supply end B of the hydrogen-cooled generator and the output end of the thirteenth manual valve (68). The sixteenth manual valve (71) and the eighteenth manual valve (73) are connected in series. The non-series end of the sixteenth manual valve (71) is connected to the fourth purity meter (39). The non-series end of the eighteenth manual valve (73) is connected to the gas supply end B of the hydrogen-cooled generator. One end of the seventeenth manual valve (72) is connected to the common point of the series connection of the sixteenth manual valve (71) and the eighteenth manual valve (73). The other end of the seventeenth manual valve (72) is vented.

9. A control method for the hydrogen-cooled generator hydrogen whole-process control system according to any one of claims 1-8, characterized in that, Includes the following steps: Detect the pressure, purity, and humidity of the hydrogen system in a hydrogen-cooled generator; When the first pressure gauge detects that the hydrogen pressure is lower than the rated pressure, the control module calculates the amount of hydrogen to be added to the hydrogen-cooled generator. By setting the working program of the hydrogen production module I, the hydrogen production module I is started to produce hydrogen. The produced hydrogen is purified by the purification module III and then returned to the gas supply terminal B of the hydrogen-cooled generator. When the first purity meter detects that the hydrogen purity of the hydrogen-cooled generator is lower than the lower purity limit, the control module sets the working program of the purification module III, starts the purification module III to purify the hydrogen from the low-pressure area A of the hydrogen-cooled generator gas end and after passing through the dehumidification module IV, and recharges it to the gas replenishment end B of the hydrogen-cooled generator until the hydrogen purity is raised to the target purity or above. When the first hygrometer detects that the current humidity is lower than the saturation humidity corresponding to the lowest temperature inside the hydrogen-cooled generator, the control module starts the dehumidification module IV to perform dehumidification by setting the working program of the dehumidification module IV.

10. A hydrogen-cooled generator, characterized in that, The hydrogen-cooled generator hydrogen whole-process control system according to any one of claims 1-8 is adopted, wherein the low-pressure area of ​​the gas end of the hydrogen-cooled generator is connected to the input end of the hydrogen dehumidification module IV in the control system, and the gas replenishment end of the hydrogen-cooled generator is connected to the output end of the purification module III in the control system.

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