Speed regulator hydraulic air supply system capable of reducing water content of air source

Abstract

The utility model discloses a speed regulator hydraulic air supply system capable of reducing the water content of an air source, and relates to the technical field of speed regulator systems. The hydraulic air supply system of the speed regulator comprises a medium-pressure unit, a medium-pressure air tank, a pressure air tank and a pressure oil tank which are connected in sequence, a medium-pressure gas tank liquid level sensor is arranged on the medium-pressure gas tank, a medium-pressure gas tank electric drain valve is arranged at the bottom of the medium-pressure gas tank, a pressure gas tank liquid level sensor is arranged on the pressure gas tank, and a pressure gas tank electric drain valve is arranged at the bottom of the pressure gas tank. The medium-pressure gas tank liquid level sensor, the medium-pressure gas tank electric drain valve, the pressure gas tank liquid level sensor and the pressure gas tank electric drain valve are all connected with the controller. The liquid water in the medium-pressure gas tank and the pressure gas tank can be monitored in real time and automatically discharged, and the liquid water is effectively prevented from being gathered at the bottoms of the medium-pressure gas tank and the pressure gas tank for a long time, so that corrosion of water to related equipment of the hydraulic gas supply system is relieved, and the service life of the hydraulic gas supply system is prolonged.

Description

Technical Field

[0001] This application relates to the field of speed governor system technology, specifically to a speed governor hydraulic air supply system that reduces the water content of the air source. Background Technology

[0002] The governor system is an auxiliary control device for the stable operation of a hydro-generator unit. It ensures the power station can output electrical energy efficiently and stably by precisely controlling the speed of the turbine or steam turbine. The hydraulic air supply system, as an important component of the governor system, provides a stable air source to ensure the stable operation of the hydraulic system within the governor system.

[0003] Currently, hydraulic air supply systems typically consist of a medium-pressure compressor, a medium-pressure air tank, a pressure air tank, and a pressure oil tank connected in sequence. The medium-pressure compressor compresses air to a specific pressure and then delivers it to the medium-pressure air tank for storage. The medium-pressure air tank, under pressure, then delivers the gas to the pressure air tank, which ultimately reaches the pressure oil tank to supply a stable supply of hydraulic oil to the speed controller system.

[0004] However, in actual operation, the intermediate-pressure compressor inevitably introduces moisture from the air into the hydraulic air supply system during the air compression process. Over time, a large amount of liquid water accumulates at the bottom of the intermediate-pressure and pressure tanks. This not only accelerates the corrosion of related equipment in the hydraulic air supply system and shortens its service life, but may also lead to excessive moisture content in the pressure tank. Once the moisture content in the pressure tank exceeds the standard, the performance of the hydraulic oil inside will be severely affected, leading to problems such as sluggish response and decreased accuracy in the governor system, posing a serious threat to the stable operation of the governor system and the safe operation of the hydro-generator unit. Utility Model Content

[0005] The purpose of this application is to provide a speed governor hydraulic air supply system that reduces the water content of the air source, thereby solving the problems of shortened service life of the hydraulic air supply system and the impact on the performance of hydraulic oil.

[0006] The technical solution adopted by this application to solve its technical problem is:

[0007] A speed regulator hydraulic air supply system for reducing the moisture content of the air source includes a medium-pressure unit, a medium-pressure air tank, a pressure air tank, and a pressure oil tank connected in sequence. The medium-pressure air tank is equipped with a medium-pressure air tank level sensor and an electric drain valve at the bottom of the medium-pressure air tank. The pressure air tank is equipped with a pressure air tank level sensor and an electric drain valve at the bottom of the pressure air tank. The medium-pressure air tank level sensor, the electric drain valve, the pressure air tank level sensor, and the electric drain valve are all connected to a controller.

[0008] Furthermore, the medium-pressure unit includes multiple medium-pressure units, and the outlet of each medium-pressure unit is connected to the inlet of the medium-pressure gas tank through a first dewatering device.

[0009] Furthermore, the first dehydration device includes a first refrigerated dryer and a first gas-water separator. The air inlet of the first refrigerated dryer is connected to the air outlet of the medium-pressure machine, the air outlet of the first refrigerated dryer is connected to the air inlet of the first gas-water separator, and the air outlet of the first gas-water separator is connected to the air inlet of the medium-pressure gas tank.

[0010] Furthermore, a check valve and a first normally open valve are sequentially provided on the pipeline between the outlet of the medium-pressure compressor and the inlet of the first refrigerated dryer along the gas delivery direction. A second normally open valve is provided on the pipeline between the outlet of the first refrigerated dryer and the inlet of the first gas-water separator. The inlet of the first normally open valve is connected to the outlet of the second normally open valve through a spare pipe. A first normally closed valve is provided on the spare pipe.

[0011] Furthermore, the drain outlet of the first gas-water separator is connected to the sewage pipe.

[0012] Furthermore, both the first refrigerated dryer and the first gas-water separator are connected to the controller.

[0013] Furthermore, the outlet of each of the first gas-water separators is connected to a medium-pressure gas main pipe, which is connected to the inlet of the medium-pressure gas tank.

[0014] Furthermore, the outlet of the medium-pressure gas tank is connected to the inlet of the pressure gas tank through a medium-pressure gas supply main pipe, and a second water removal device is provided on the medium-pressure gas supply main pipe.

[0015] Furthermore, the medium-pressure gas supply main pipe is equipped with an automatic gas replenishment valve assembly.

[0016] Furthermore, the pressure tank is equipped with a safety valve.

[0017] The beneficial effects of this application are:

[0018] The speed regulator hydraulic air supply system for reducing the water content of the air source provided in this application embodiment, by installing a medium-pressure air tank level sensor and a medium-pressure air tank electric drain valve on the medium-pressure air tank, and installing a pressure air tank level sensor and a pressure air tank electric drain valve on the pressure air tank, and connecting them to a controller, can realize real-time monitoring and automatic discharge of liquid water in the medium-pressure air tank and the pressure air tank, effectively avoiding long-term accumulation of liquid water at the bottom of the medium-pressure air tank and the pressure air tank, thereby slowing down the corrosion of water on the related equipment of the hydraulic air supply system and extending its service life.

[0019] Compared to existing hydraulic air supply systems, this application effectively reduces the water content in the air source by draining water from the medium-pressure air tank and the pressure air tank. This prevents the water content in the pressure oil tank from exceeding the standard, avoids affecting the performance of the hydraulic oil in the pressure oil tank, and enables the governor system to operate stably with high precision and high response speed. This provides a solid foundation for the efficient and stable power generation of the turbine generator unit and improves the safety and reliability of the entire power generation system. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the hydraulic air supply system for the speed governor provided in the embodiments of this application;

[0022] Figure 2 This is a structural schematic diagram of a medium-pressure unit.

[0023] Figure label:

[0024] 10-Medium-pressure unit; 101-Medium-pressure unit; 102-First dewatering device; 1021-First refrigerated dryer; 1022-First gas-water separator; 103-Check valve; 104-First normally open valve; 105-Second normally open valve; 106-Spare pipe; 107-First normally closed valve;

[0025] 11-Medium-pressure gas tank; 12-Pressure gas tank; 13-Pressure oil tank; 14-Medium-pressure gas tank level sensor; 15-Medium-pressure gas tank electric drain valve; 16-Pressure gas tank level sensor; 17-Pressure gas tank electric drain valve; 18-Controller; 19-Drain pipe; 20-Medium-pressure gas supply main pipe; 21-Second water removal device; 22-Automatic air replenishment valve assembly; 23-Safety valve; 24-Medium-pressure gas main pipe. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0027] In the description of this application, the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and 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. Therefore, they should not be construed as limitations on this application. Unless otherwise specified, the above-mentioned orientational descriptions can be flexibly set in actual application, provided that the relative positional relationships shown in the accompanying drawings are satisfied.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] See Figure 1 This application provides a speed regulator hydraulic air supply system for reducing the water content of the air source, including a medium-pressure unit 10, a medium-pressure air tank 11, a pressure air tank 12, and a pressure oil tank 13 connected in sequence; the medium-pressure air tank 11 is equipped with a medium-pressure air tank level sensor 14, and the bottom of the medium-pressure air tank 11 is equipped with a medium-pressure air tank electric drain valve 15; the pressure air tank 12 is equipped with a pressure air tank level sensor 16, and the bottom of the pressure air tank 12 is equipped with a pressure air tank electric drain valve 17; the medium-pressure air tank level sensor 14, the medium-pressure air tank electric drain valve 15, the pressure air tank level sensor 16, and the pressure air tank electric drain valve 17 are all connected to a controller 18.

[0030] See Figure 1 The medium-pressure unit 10 includes at least two medium-pressure compressors 101, also called medium-pressure air compressors. Each medium-pressure compressor 101 has its air inlet directly connected to the atmosphere for drawing in air from the outside. The air outlet of each medium-pressure compressor 101 is connected to the air inlet of a medium-pressure air tank 11 via a pipe, allowing the compressors to compress air to a specific pressure and then store it in the tank. Each compressor 101 also has a drain outlet at its bottom for discharging wastewater generated during operation. This wastewater mainly originates from the condensation of moisture in the air during compression. The drain outlet of each compressor 101 is connected to a drain pipe 19 via a pipe. For example, three medium-pressure compressors 101 are used to compress air to 7 MPa before storing it in the medium-pressure air tank 11.

[0031] The outlet of the medium-pressure air tank 11 is connected to the inlet of the pressure air tank 12 via a pipe. The outlet of the pressure air tank 12 is connected to the inlet of the pressure oil tank 13 via a pipe. The upper part of the inner cavity of the pressure oil tank 13 is connected to its inlet, and the lower part of the inner cavity of the pressure oil tank 13 stores hydraulic oil. Under pressure, the medium-pressure air tank 11 can deliver the compressed air inside to the pressure air tank 12, and finally to the pressure oil tank 13, to regulate the pressure and oil volume in the pressure oil tank 13, so as to provide a stable hydraulic oil supply to the speed governor system using the pressure oil tank 13.

[0032] The medium-pressure air tank 11 is equipped with a pressure transmitter, which, along with the medium-pressure compressor 101, is connected to the controller 18. The pressure transmitter monitors the pressure inside the medium-pressure air tank 11 in real time and sends the pressure data to the controller 18. When the pressure inside the medium-pressure air tank 11 falls below the preset pressure in the controller 18, the controller 18 issues a start command for the medium-pressure compressor 101. Upon receiving the command, the medium-pressure compressor 101 starts, compressing air through three stages and then delivering it to the medium-pressure air tank 11 for storage. The controller 18 includes, but is not limited to, a PLC controller.

[0033] A medium-pressure gas tank 11 is equipped with a medium-pressure gas tank level sensor 14, which can monitor the liquid water level in the medium-pressure gas tank 11 in real time and send the monitored liquid level data to the controller 18. A medium-pressure gas tank electric drain valve 15 is located at the bottom of the medium-pressure gas tank 11. When the liquid level data received by the controller 18 exceeds the preset liquid level, the controller 18 sends an opening command to the medium-pressure gas tank electric drain valve 15. Upon receiving the opening command, the medium-pressure gas tank electric drain valve 15 opens, thereby draining the liquid water from the medium-pressure gas tank 11.

[0034] The pressure tank 12 is equipped with a pressure tank level sensor 16, which can monitor the liquid level in the pressure tank 12 in real time and send the monitored liquid level data to the controller 18. The bottom of the pressure tank 12 is equipped with a pressure tank electric drain valve 17. When the liquid level data received by the controller 18 exceeds a preset level, the controller 18 sends an opening command to the pressure tank electric drain valve 17. Upon receiving the opening command, the pressure tank electric drain valve 17 opens, thereby draining the liquid water from the pressure tank 12.

[0035] See Figure 1 The working principle of the speed regulator hydraulic air supply system for reducing the water content of the air source provided in this application embodiment is as follows:

[0036] The medium-pressure air tank 11 stores compressed air at 7 MPa. Under pressure, the medium-pressure air tank 11 delivers the compressed air to the pressure air tank 12, and finally to the pressure oil tank 13. During this process, the pressure transmitter on the medium-pressure air tank 11 monitors the pressure inside the medium-pressure air tank 11 in real time and transmits the pressure data to the controller 18. When the pressure data received by the controller 18 is lower than the preset pressure, the controller 18 issues a start command for the medium-pressure compressor. After receiving the start command, the medium-pressure compressor 101 starts and delivers the air to the medium-pressure air tank 11 for storage after three-stage compression. When the pressure data received by the controller 18 exceeds the preset pressure, the controller 18 issues a shut-down command for the medium-pressure compressor. After receiving the shut-down command, the medium-pressure compressor 101 shuts down. Meanwhile, the medium-pressure gas tank level sensor 14 monitors the liquid water level in the medium-pressure gas tank 11 in real time and sends the monitored liquid level data to the controller 18. When the liquid level data received by the controller 18 exceeds the preset liquid level of the medium-pressure gas tank, the controller 18 sends an opening command to the electric drain valve 15 of the medium-pressure gas tank. After receiving the opening command, the electric drain valve 15 of the medium-pressure gas tank opens, thereby draining the liquid water in the medium-pressure gas tank 11. After all the liquid water is drained, the electric drain valve 15 of the medium-pressure gas tank closes. Meanwhile, the pressure tank level sensor 16 monitors the liquid water level in the pressure tank 12 in real time and sends the monitored level data to the controller 18. When the level data received by the controller 18 exceeds the preset level of the pressure tank, the controller 18 sends an opening command to the pressure tank electric drain valve 17. After receiving the opening command, the pressure tank electric drain valve 17 opens, thereby draining the liquid water in the pressure tank 12. After all the liquid water is drained, the pressure tank electric drain valve 17 closes. This cycle ensures the stable operation of the entire hydraulic air supply system.

[0037] The speed regulator hydraulic air supply system for reducing the water content of the air source provided in this application embodiment, by installing a medium-pressure air tank level sensor 14 and a medium-pressure air tank electric drain valve 15 on the medium-pressure air tank 11, and installing a pressure air tank level sensor 16 and a pressure air tank electric drain valve 17 on the pressure air tank 12, and connecting them to the controller 18, can realize real-time monitoring and automatic discharge of liquid water in the medium-pressure air tank 11 and the pressure air tank 12, effectively avoiding long-term accumulation of liquid water at the bottom of the medium-pressure air tank 11 and the pressure air tank 12, thereby slowing down the corrosion of related equipment of the hydraulic air supply system by moisture and extending its service life.

[0038] Compared to existing hydraulic air supply systems, this application effectively reduces the water content in the air source by draining water from the medium-pressure air tank 11 and the pressure air tank 12. This prevents the water content in the pressure oil tank 13 from exceeding the standard, avoids affecting the performance of the hydraulic oil in the pressure oil tank 13, and enables the governor system to operate stably with high precision and high response speed. This provides a solid foundation for the efficient and stable power generation of the turbine generator set and improves the safety and reliability of the entire power generation system.

[0039] In some embodiments, see Figure 2 The medium-pressure unit 10 includes multiple medium-pressure units 101, and the outlet of each medium-pressure unit 101 is connected to the inlet of the medium-pressure gas tank 11 through a first dehydration device 102. "Multiple" refers to at least two units. For example, the medium-pressure unit 10 includes three medium-pressure units 101, and each medium-pressure unit 101 is connected to the inlet of the medium-pressure gas tank 11 through a first dehydration device 102.

[0040] Correspondingly, by setting a first dehydration device 102 at the air outlet of each intermediate pressure unit 101, the compressed air output by the intermediate pressure unit 101 can be preliminarily dehydrated using the first dehydration device 102, which greatly reduces the moisture content of the air entering the intermediate pressure air tank 11. This not only reduces the burden on the drainage equipment on the intermediate pressure air tank 11 and the pressure air tank 12, but also reduces the risk of damage to the entire hydraulic air supply system due to moisture erosion, providing a more reliable guarantee for the long-term stable operation of the entire hydraulic air supply system.

[0041] The first water removal device 102 can be an air-water separator or other existing structures, as long as it can remove moisture from compressed air. No specific limitations are made here.

[0042] In some embodiments, see Figure 2 The first dehydration device 102 includes a first refrigerated dryer 1021 and a first gas-water separator 1022. The air inlet of the first refrigerated dryer 1021 is connected to the air outlet of the medium-pressure compressor 101, the air outlet of the first refrigerated dryer 1021 is connected to the air inlet of the first gas-water separator 1022, and the air outlet of the first gas-water separator 1022 is connected to the air inlet of the medium-pressure gas tank 11.

[0043] Correspondingly, when atmospheric air is compressed by the medium-pressure compressor 101, mechanical energy is converted into the internal energy of the compressed air, which leads to an increase in the temperature of the compressed air and a higher water content. By setting up a first refrigerated dryer 1021 and a first gas-water separator 1022, when the compressed air enters the first refrigerated dryer 1021, the temperature of the compressed air can be lowered using refrigeration technology, causing the water vapor in the air to condense into liquid water, thereby achieving preliminary water removal. When the compressed air processed by the first refrigerated dryer 1021 enters the first gas-water separator 1022, the residual liquid water is further separated. Through this dual water removal measure, the water content of the gas entering the medium-pressure gas tank 11 is significantly reduced, reducing the possibility of water accumulation in the gas tank, reducing the risk of corrosion of the gas tank and related pipelines due to water, and further ensuring that the performance of the hydraulic oil is not affected by water.

[0044] In some embodiments, see Figure 2 A check valve 103 and a first normally open valve 104 are sequentially installed on the pipeline between the outlet of the medium-pressure unit 101 and the inlet of the first refrigerated dryer 1021 along the gas conveying direction. A second normally open valve 105 is installed on the pipeline between the outlet of the first refrigerated dryer 1021 and the inlet of the first gas-water separator 1022. The inlet of the first normally open valve 104 is connected to the outlet of the second normally open valve 105 through a spare pipe 106. A first normally closed valve 107 is installed on the spare pipe 106.

[0045] Correspondingly, by installing a check valve 103 on the pipeline between the outlet of the intermediate pressure unit 101 and the inlet of the first refrigerated dryer 1021, the gas can only flow in the direction from the intermediate pressure unit 101 to the first refrigerated dryer 1021, and cannot flow backward. By setting a first normally open valve 104, a second normally open valve 105, a backup pipe 106, and a first normally closed valve 107, the system is provided with flexible control and backup functions. During normal operation, the first normally open valve 104 and the second normally open valve 105 remain open, and the first normally closed valve 107 remains closed. The gas passes through the first refrigerated dryer 1021 and the first gas-water separator 1022 for dehydration treatment before entering the intermediate pressure gas tank 11. When the first refrigerated dryer 1021 malfunctions and needs repair or replacement, the first normally open valve 104 and the second normally open valve 105 can be closed, and the first normally closed valve 107 can be opened, allowing the gas to bypass the first refrigerated dryer 1021 and directly enter the first gas-water separator 1022 through the backup pipe 106. This ensures that the entire gas supply system can still operate normally during the maintenance of the first refrigerated dryer 1021, improving the reliability and availability of the system.

[0046] In some embodiments, see Figure 2The drain outlet of the first gas-water separator 1022 can be connected to the sewage pipe 19. Correspondingly, this structure allows the water separated from the first gas-water separator 1022 to be centrally discharged into the sewage pipe 19, and then discharged into a designated sewage system via the sewage pipe 19, facilitating unified treatment and monitoring of wastewater. Of course, the drain outlet of the first refrigerated dryer 1021 can also be connected to the sewage pipe 19, as can the electric drain valve 15 of the medium-pressure gas tank and the electric drain valve 17 of the pressure gas tank.

[0047] In some embodiments, see Figure 1 , Figure 2 The first refrigerated dryer 1021 and the first gas-water separator 1022 are both connected to the controller 18.

[0048] Correspondingly, by connecting the first refrigerated dryer 1021 and the first gas-water separator 1022 to the controller 18, the controller 18 can automatically adjust the operating status of the first refrigerated dryer 1021 and the first gas-water separator 1022, such as the refrigeration temperature and operating time, according to preset parameters and real-time monitoring data. This automated control method can reduce manual intervention and improve the operating efficiency of the system.

[0049] In some embodiments, see Figure 2 The outlet of each first gas-water separator 1022 is connected to the medium-pressure gas main pipe 24, and the medium-pressure gas main pipe 24 is connected to the inlet of the medium-pressure gas tank 11.

[0050] Correspondingly, the outlets of multiple first gas-water separators 1022 are centrally connected through the medium-pressure gas header 24, so that the compressed air generated by multiple medium-pressure compressors 101, after being dehydrated, can uniformly enter the medium-pressure gas header 24 and then be centrally transported to the medium-pressure gas tank 11. This structure can ensure more stable gas pressure and flow rate in the medium-pressure gas tank 11, avoiding the impact of fluctuations in a single medium-pressure compressor 101 or the first dehydration device 102 on the entire system.

[0051] In some embodiments, see Figure 1 The outlet of the medium-pressure gas tank 11 is connected to the inlet of the pressure gas tank 12 via the medium-pressure gas supply header 20. The medium-pressure gas supply header 20 is equipped with a second dehydration device 21. For example, the second dehydration device 21 can be a second refrigerated dryer, a second gas-water separator, a combination of the second refrigerated dryer and the second gas-water separator, or other existing structures, without specific limitations here.

[0052] Correspondingly, by setting a second dehydration device 21, the gas can be dehydrated again, which further reduces the water content of the gas entering the pressure tank 12 and further reduces the possibility of water accumulation in the pressure tank 12.

[0053] In some embodiments, see Figure 1 An automatic air supply valve assembly 22 is installed on the medium-pressure air supply main pipe 20. Accordingly, the automatic air supply valve assembly 22 can automatically adjust the air supply volume according to the actual needs of the system, so that the system can better adapt to different working conditions and operating conditions. This automation function reduces the need for manual intervention, reduces the workload and difficulty of operation for operators, and improves the operating efficiency and convenience of the system.

[0054] In some embodiments, see Figure 1 The pressure tank 12 is equipped with a safety valve 23. Accordingly, by setting the safety valve 23, when the pressure inside the pressure tank 12 exceeds the set safety threshold, the safety valve 23 can automatically open to release the excess pressure, effectively preventing the pressure tank 12 from exploding or other safety accidents due to excessive pressure, and ensuring the safety of the system and operators.

[0055] The hydraulic air supply system for reducing the moisture content of the air source provided in this application embodiment can be equipped with corresponding valves on each pipeline to meet different process requirements.

[0056] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A speed regulator hydraulic air supply system for reducing the moisture content of the air source, comprising a medium-pressure unit (10), a medium-pressure air tank (11), a pressure air tank (12), and a pressure oil tank (13) connected in sequence; characterized in that, The medium-pressure gas tank (11) is equipped with a medium-pressure gas tank level sensor (14), and the bottom of the medium-pressure gas tank (11) is equipped with a medium-pressure gas tank electric drain valve (15). The pressure gas tank (12) is equipped with a pressure gas tank level sensor (16), and the bottom of the pressure gas tank (12) is equipped with a pressure gas tank electric drain valve (17). The medium-pressure gas tank level sensor (14), the medium-pressure gas tank electric drain valve (15), the pressure gas tank level sensor (16), and the pressure gas tank electric drain valve (17) are all connected to the controller (18).

2. The governor hydraulic gas supply system of claim 1, wherein The medium-pressure unit (10) includes a plurality of medium-pressure units (101), and the outlet of each medium-pressure unit (101) is connected to the inlet of the medium-pressure gas tank (11) through a first dewatering device (102).

3. The governor hydraulic gas supply system of claim 2, wherein The first dehydration device (102) includes a first refrigerated dryer (1021) and a first gas-water separator (1022). The air inlet of the first refrigerated dryer (1021) is connected to the air outlet of the medium-pressure machine (101), the air outlet of the first refrigerated dryer (1021) is connected to the air inlet of the first gas-water separator (1022), and the air outlet of the first gas-water separator (1022) is connected to the air inlet of the medium-pressure gas tank (11).

4. The governor hydraulic gas supply system of claim 3, wherein A check valve (103) and a first normally open valve (104) are sequentially provided on the pipe between the outlet of the medium-pressure unit (101) and the inlet of the first refrigerated dryer (1021) along the gas delivery direction. A second normally open valve (105) is provided on the pipe between the outlet of the first refrigerated dryer (1021) and the inlet of the first gas-water separator (1022). The inlet of the first normally open valve (104) is connected to the outlet of the second normally open valve (105) through a spare pipe (106). A first normally closed valve (107) is provided on the spare pipe (106).

5. The governor hydraulic gas supply system of claim 3, wherein The drain outlet of the first gas-water separator (1022) is connected to the sewage pipe (19).

6. The governor hydraulic gas supply system of claim 3, wherein The first refrigerated dryer (1021) and the first gas-water separator (1022) are both connected to the controller (18).

7. The governor hydraulic gas supply system of claim 3, wherein The outlet of each of the first gas-water separators (1022) is connected to the medium-pressure gas main pipe (24), which is connected to the inlet of the medium-pressure gas tank (11).

8. The governor hydraulic gas supply system of claim 1, wherein The outlet of the medium-pressure gas tank (11) is connected to the inlet of the pressure gas tank (12) through the medium-pressure gas supply main pipe (20), and the medium-pressure gas supply main pipe (20) is equipped with a second water removal device (21).

9. The governor hydraulic gas supply system of claim 8, wherein An automatic gas replenishment valve assembly (22) is provided on the medium-pressure gas supply main pipe (20).

10. The governor hydraulic gas supply system of claim 1, wherein The pressure tank (12) is equipped with a safety valve (23).

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