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

Abstract

The invention 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 technical field of governor systems, and specifically relates to a hydraulic air supply system for a governor that reduces the water content in the air source. Background Art

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

[0003] Currently, the hydraulic air supply system is usually composed of a medium-pressure compressor, a medium-pressure air tank, a pressure air tank, and a pressure oil tank connected in sequence. Among them, the medium-pressure compressor compresses air to a specific pressure and then transports it to the medium-pressure air tank for storage. The medium-pressure air tank transports the gas to the pressure air tank under pressure, and finally reaches the pressure oil tank to supply stable hydraulic oil for the governor system.

[0004] However, in actual operation, during the process of compressing air by the medium-pressure compressor, it is inevitable to bring the moisture in the air into the hydraulic air supply system together. Over time, a large amount of liquid water will accumulate at the bottom of the medium-pressure air tank and the pressure air tank. This will not only accelerate the corrosion of the relevant equipment in the hydraulic air supply system and shorten its service life, but also may cause the water content in the pressure oil tank to exceed the standard. Once the water content in the pressure oil tank exceeds the standard, the performance of the hydraulic oil in the pressure oil tank will be seriously affected, which will in turn cause problems such as slow action and decreased accuracy in the governor system, posing serious potential hazards to the stable operation of the governor system and the safe operation of hydro-generator units. Summary of the Invention

[0005] The purpose of this application is to provide a hydraulic air supply system for a governor that reduces the water content in the air source, and solve the problems of shortened service life of the hydraulic air supply system and affected performance of the hydraulic oil.

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

[0007] A hydraulic air supply system for a governor that reduces the water content in 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; a medium-pressure air tank liquid level sensor is provided on the medium-pressure air tank, a medium-pressure air tank electric drain valve is provided at the bottom of the medium-pressure air tank, a pressure air tank liquid level sensor is provided on the pressure air tank, a pressure air tank electric drain valve is provided at the bottom of the pressure air tank, and the medium-pressure air tank liquid level sensor, the medium-pressure air tank electric drain valve, the pressure air tank liquid level sensor, and the pressure air tank electric drain valve are all connected to a controller.

[0008] Further, the medium-pressure unit includes a plurality of medium-pressure machines, and the air outlet of each medium-pressure machine is communicated with the air inlet of the medium-pressure gas tank through a first water removal device.

[0009] Further, the first water removal device includes a first refrigerated dryer and a first gas-water separator. The air inlet of the first refrigerated dryer is communicated with the air outlet of the medium-pressure machine, the air outlet of the first refrigerated dryer is communicated with the air inlet of the first gas-water separator, and the air outlet of the first gas-water separator is communicated with the air inlet of the medium-pressure gas tank.

[0010] Further, a check valve and a first normally open valve are sequentially arranged on the pipeline between the air outlet of the medium-pressure machine and the air inlet of the first refrigerated dryer along the gas transmission direction. A second normally open valve is arranged on the pipeline between the air outlet of the first refrigerated dryer and the air inlet of the first gas-water separator. The inlet of the first normally open valve is communicated with the outlet of the second normally open valve through a spare pipe, and a first normally closed valve is arranged on the spare pipe.

[0011] Further, the drain outlet of the first gas-water separator is communicated with a sewage discharge pipe.

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

[0013] Further, the air outlet of each first gas-water separator is communicated with a medium-pressure gas main pipe, and the medium-pressure gas main pipe is communicated with the air inlet of the medium-pressure gas tank.

[0014] Further, the air outlet of the medium-pressure gas tank is communicated with the air inlet of the pressure gas tank through a medium-pressure gas supply main pipe, and a second water removal device is arranged on the medium-pressure gas supply main pipe.

[0015] Further, an automatic air replenishment valve group is arranged on the medium-pressure gas supply main pipe.

[0016] Further, a safety valve is arranged on the pressure gas tank.

[0017] Advantages of the present application:

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

[0019] Compared with the existing hydraulic gas supply system, by draining the water in the medium-pressure gas tank and the pressure gas tank, the present application can effectively reduce the water content in the gas source, thereby preventing the water content in the pressure oil tank from exceeding the standard, avoiding the influence on the performance of the hydraulic oil in the pressure oil tank, enabling the governor system to always operate stably with high precision and high response speed, providing a solid foundation for the efficient and stable power generation of the water turbine generator set, and improving the safety and reliability of the entire power generation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0021] Figure 1 is a schematic structural diagram of the governor hydraulic gas supply system provided by the embodiment of the present application;

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

[0023] Reference numerals:

[0024] 10 - Medium-pressure unit; 101 - Medium-pressure machine; 102 - First water removal device; 1021 - First cold 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 liquid level sensor; 15 - Medium-pressure gas tank electric drain valve; 16 - Pressure gas tank liquid 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 make-up valve group; 23 - Safety valve; 24 - Medium-pressure gas main pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0027] In the description of the present application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. Without special instructions, under the condition of satisfying the relative positional relationship shown in the drawings, the above-mentioned directional descriptions can be flexibly set during the actual application process.

[0028] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0029] See Figure 1 , an actuator hydraulic air supply system for reducing the water content of the air source provided by an embodiment of the present application includes a medium-pressure unit 10, a medium-pressure gas tank 11, a pressure gas tank 12, and a pressure oil tank 13 connected in sequence; a medium-pressure gas tank level sensor 14 is provided on the medium-pressure gas tank 11, a medium-pressure gas tank electric drain valve 15 is provided at the bottom of the medium-pressure gas tank 11, a pressure gas tank level sensor 16 is provided on the pressure gas tank 12, a pressure gas tank electric drain valve 17 is provided at the bottom of the pressure gas tank 12, and 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 a controller 18.

[0030] See Figure 1 , the medium-pressure unit 10 includes at least two medium-pressure compressors 101. The medium-pressure compressor 101 is also called a medium-pressure air compressor. The air inlet of each medium-pressure compressor 101 is directly communicated with the atmosphere for sucking air from the outside; the air outlet of each medium-pressure compressor 101 is communicated with the air inlet of the medium-pressure gas tank 11 through a pipeline, so that the air can be compressed to a specific pressure by the medium-pressure compressor 101 and then transported and stored in the medium-pressure gas tank 11; a sewage outlet is also provided at the bottom of each medium-pressure compressor 101 for discharging the waste water generated during the operation of the medium-pressure compressor 101. These waste waters mainly come from the condensation of moisture in the air during the compression process. Among them, the sewage outlet of each medium-pressure compressor 101 can be communicated with a sewage pipe 19 through a pipeline. Exemplarily, three medium-pressure compressors 101 are used to compress air to 7 MPa and then transport and store it in the medium-pressure gas tank 11.

[0031] The air outlet of the medium-pressure gas tank 11 is connected to the air inlet of the pressure gas tank 12 through a pipeline, the air outlet of the pressure gas tank 12 is connected to the air inlet of the pressure oil tank 13 through a pipeline, the upper part of the inner cavity of the pressure oil tank 13 is connected to its air inlet, and hydraulic oil is stored in the lower part of the inner cavity of the pressure oil tank 13. Under the action of pressure, the medium-pressure gas tank 11 can transport the compressed air therein to the pressure gas tank 12 and finally reach the pressure oil tank 13 to adjust the pressure and oil volume in the pressure oil tank 13, so as to use the pressure oil tank 13 to provide stable hydraulic oil for the governor system.

[0032] A pressure transmitter is provided on the medium-pressure gas tank 11, and both the pressure transmitter and the medium-pressure compressor 101 are connected to the controller 18. The pressure transmitter can be used to monitor the pressure in the medium-pressure gas tank 11 in real time and send the pressure data to the controller 18. When the pressure in the medium-pressure gas tank 11 is lower than the preset pressure in the controller 18, the controller 18 issues a start command for the medium-pressure compressor, and after receiving the command, the medium-pressure compressor 101 starts and transports the air to the medium-pressure gas tank 11 for storage after three-stage compression by the body. Among them, the controller 18 includes but is not limited to a PLC controller.

[0033] A medium-pressure gas tank liquid level sensor 14 is provided on the medium-pressure gas tank 11. The medium-pressure gas tank liquid level sensor 14 can be used to monitor the liquid level height of the liquid water in the medium-pressure gas tank 11 in real time and send the monitored liquid level data to the controller 18. An electric drain valve 15 for the medium-pressure gas tank is provided 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 electric drain valve 15 for the medium-pressure gas tank. After receiving the opening command, the electric drain valve 15 for the medium-pressure gas tank opens, and then the liquid water in the medium-pressure gas tank 11 is drained away.

[0034] A pressure gas tank liquid level sensor 16 is provided on the pressure gas tank 12. The pressure gas tank liquid level sensor 16 can be used to monitor the liquid level height in the pressure gas tank 12 in real time and send the monitored liquid level data to the controller 18. An electric drain valve 17 for the pressure gas tank is provided at the bottom of the pressure gas tank 12. When the liquid level data received by the controller 18 exceeds the preset liquid level, the controller 18 sends an opening command to the electric drain valve 17 for the pressure gas tank. After receiving the opening command, the electric drain valve 17 for the pressure gas tank opens, and then the liquid water in the pressure gas tank 12 is drained away.

[0035] See Figure 1 , the working principle of the governor hydraulic air supply system for reducing the water content of the gas source provided by the embodiment of the present application is:

[0036] The medium-pressure gas tank 11 stores compressed air at 7 MPa. Under the action of pressure, the medium-pressure gas tank 11 transports the compressed air therein to the pressure gas tank 12 and finally reaches the pressure oil tank 13. During this process, the pressure transmitter on the medium-pressure gas tank 11 monitors the pressure inside the medium-pressure gas 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 transports the air to the medium-pressure gas tank 11 for storage after three-stage compression by the main body. When the pressure data received by the controller 18 exceeds the preset pressure, the controller 18 issues a shutdown command for the medium-pressure compressor. After receiving the shutdown command, the medium-pressure compressor 101 shuts down. At the same time, the liquid level sensor 14 of the medium-pressure gas tank monitors the liquid level height of the liquid water inside 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, and then drains the liquid water inside 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. At the same time, the liquid level sensor 16 of the pressure gas tank monitors the liquid level height of the liquid water inside the pressure gas tank 12 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 pressure gas tank, the controller 18 sends an opening command to the electric drain valve 17 of the pressure gas tank. After receiving the opening command, the electric drain valve 17 of the pressure gas tank opens, and then drains the liquid water inside the pressure gas tank 12. After all the liquid water is drained, the electric drain valve 17 of the pressure gas tank closes. Such a cycle can ensure the stable operation of the entire hydraulic gas supply system.

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

[0038] Compared with the existing hydraulic gas supply system, by draining the water in the medium-pressure gas tank 11 and the pressure gas tank 12 in this application, the water content in the gas source can be effectively reduced, thereby preventing the water content in the pressure oil tank 13 from exceeding the standard, avoiding the influence on the performance of the hydraulic oil in the pressure oil tank 13, enabling the governor system to always operate stably with high precision and high response speed, providing a solid foundation for the efficient and stable power generation of the water turbine generator set, and improving the safety and reliability of the entire power generation system.

[0039] In some embodiments, referring to Figure 2 , the medium-pressure unit 10 includes a plurality of medium-pressure machines 101, and the air outlet of each medium-pressure machine 101 is connected to the air inlet of the medium-pressure gas tank 11 through a first water removal device 102. Herein, "a plurality" refers to at least two. For example, the medium-pressure unit 10 includes three medium-pressure machines 101, and the air outlet of each medium-pressure machine 101 is connected to the air inlet of the medium-pressure gas tank 11 through a first water removal device 102.

[0040] Correspondingly, by arranging the first water removal device 102 at the air outlet of each medium-pressure machine 101, the first water removal device 102 can be used to preliminarily treat the compressed air output by the medium-pressure machine 101, greatly reducing the water content of the air entering the medium-pressure gas tank 11. This not only reduces the burden on the drainage equipment of the medium-pressure gas tank 11 and the pressure gas tank 12, but also reduces the risk of damage to the entire hydraulic gas supply system due to water erosion, providing a more reliable guarantee for the long-term stable operation of the entire hydraulic gas supply system.

[0041] The first water removal device 102 can be an air-water separator or other existing structures, as long as it can play the role of removing moisture in the compressed air, and no specific limitation is made here.

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

[0043] Correspondingly, after the air in the atmosphere is compressed by the medium-pressure compressor 101, the mechanical energy is converted into the internal energy of the compressed air, which will cause the temperature of the compressed air to rise, resulting in a relatively high water content in the compressed air. By setting the first cold dryer 1021 and the first air-water separator 1022, when the compressed air enters the first cold dryer 1021, the refrigeration technology can be used to lower the temperature of the compressed air, condense the water vapor in the air into liquid water, so as to achieve preliminary water removal. When the compressed air processed by the first cold dryer 1021 enters the first air-water separator 1022, the remaining liquid water is further separated. Through this double water removal measure, the water content of the gas entering the medium-pressure gas tank 11 is greatly reduced, reducing the possibility of water accumulation in the gas tank, and reducing the risk of moisture corrosion of the gas tank and related pipelines, further ensuring that the performance of the hydraulic oil is not affected by moisture.

[0044] In some embodiments, referring to Figure 2 , a check valve 103 and a first normally open valve 104 are sequentially arranged on the pipeline between the air outlet of the medium-pressure compressor 101 and the air inlet of the first cold dryer 1021 along the gas transmission direction. A second normally open valve 105 is arranged on the pipeline between the air outlet of the first cold dryer 1021 and the air inlet of the first air-water separator 1022. The inlet of the first normally open valve 104 is communicated with the outlet of the second normally open valve 105 through a spare pipe 106, and a first normally closed valve 107 is arranged on the spare pipe 106.

[0045] Correspondingly, by setting a check valve 103 on the pipeline between the air outlet of the medium-pressure compressor 101 and the air inlet of the first cold dryer 1021, the gas can only flow in the direction from the medium-pressure compressor 101 to the first cold dryer 1021 and cannot flow backward. By setting the first normally open valve 104, the second normally open valve 105, the spare pipe 106 and the first normally closed valve 107, flexible control and standby functions are provided for the system. During normal operation, the first normally open valve 104 and the second normally open valve 105 are kept open, and the first normally closed valve 107 is kept closed. The gas passes through the first cold dryer 1021 and the first air-water separator 1022 in sequence for water treatment and then enters the medium-pressure gas tank 11. When the first cold dryer 1021 fails and needs to be repaired or replaced, 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, so that the gas bypasses the first cold dryer 1021 through the spare pipe 106 and directly enters the first air-water separator 1022, thus ensuring that the entire gas supply system can still operate normally during the repair period of the first cold dryer 1021, improving the reliability and availability of the system.

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

[0047] In some embodiments, referring to Figure 1 , Figure 2 , the first cold dryer 1021 and the first air-water separator 1022 are both connected to the controller 18.

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

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

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

[0051] In some embodiments, referring to Figure 1 , the air outlet of the medium-pressure air tank 11 is connected to the air inlet of the pressure air tank 12 through the medium-pressure air supply main pipe 20, and a second water removal device 21 is provided on the medium-pressure air supply main pipe 20. Exemplarily, the second water removal device 21 can be a second cold dryer, or a second air-water separator, or a combined structure of a second cold dryer and a second air-water separator, or other existing structures, which are not specifically limited herein.

[0052] Correspondingly, by setting the second water removal device 21, the gas can be subjected to secondary water treatment, further reducing the water content of the gas entering the pressure air tank 12 and further reducing the possibility of water accumulation in the pressure air tank 12.

[0053] In some embodiments, referring to Figure 1 , an automatic air replenishing valve group 22 is provided on the medium-pressure gas supply main pipe 20. Correspondingly, the automatic air replenishing valve group 22 can automatically adjust the air replenishing amount according to the actual requirements of the system, enabling the system to better adapt to different working conditions and operating conditions. This automation function reduces the need for manual intervention, lowers the work intensity and operation difficulty of the operators, and improves the operation efficiency and operation convenience of the system.

[0054] In some embodiments, referring to Figure 1 , a safety valve 23 is provided on the pressure gas tank 12. Correspondingly, by setting the safety valve 23, when the pressure in the pressure gas tank 12 exceeds the set safety threshold, the safety valve 23 can automatically open to release the excess pressure, effectively preventing the pressure gas tank 12 from exploding or suffering other safety accidents due to excessive pressure, and ensuring the safety of the system and the operators.

[0055] For the governor hydraulic gas supply system provided by the embodiments of the present application for reducing the water content of the gas source, corresponding valves can be provided on each pipeline therein to meet different process requirements.

[0056] The above are only the specific implementation manners of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present application should be covered within the protection scope of the present application.

Claims

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

2. The hydraulic air supply system of the governor according to claim 1, characterized in that, The medium-pressure unit (10) includes a plurality of medium-pressure compressors (101), and the outlet of each medium-pressure compressor (101) is communicated with the inlet of the medium-pressure gas tank (11) through a first water removal device (102).

3. The governor hydraulic air supply system according to claim 2, characterized in that, The first water removal device (102) includes a first cold dryer (1021) and a first gas-water separator (1022). The inlet of the first cold dryer (1021) is communicated with the outlet of the medium-pressure compressor (101), the outlet of the first cold dryer (1021) is communicated with the inlet of the first gas-water separator (1022), and the outlet of the first gas-water separator (1022) is communicated with the inlet of the medium-pressure gas tank (11).

4. The hydraulic air supply system of the governor according to claim 3, characterized in that, A check valve (103) and a first normally open valve (104) are sequentially arranged on the pipeline between the outlet of the medium-pressure compressor (101) and the inlet of the first cold dryer (1021) along the gas transmission direction. A second normally open valve (105) is arranged on the pipeline between the outlet of the first cold dryer (1021) and the inlet of the first gas-water separator (1022). The inlet of the first normally open valve (104) is communicated with the outlet of the second normally open valve (105) through a spare pipe (106), and a first normally closed valve (107) is arranged on the spare pipe (106).

5. The governor hydraulic air supply system according to claim 3, characterized in that, The drain port of the first gas-water separator (1022) is communicated with a sewage discharge pipe (19).

6. The governor hydraulic air supply system according to claim 3, characterized in that, The first cold dryer (1021) and the first gas-water separator (1022) are both connected to the controller (18).

7. The hydraulic air supply system of the governor according to claim 3, characterized in that, The outlet of each first gas-water separator (1022) is communicated with a medium-pressure gas main pipe (24), and the medium-pressure gas main pipe (24) is communicated with the inlet of the medium-pressure gas tank (11).

8. The hydraulic air supply system of a governor according to claim 1, characterized in that, The outlet of the medium-pressure gas tank (11) is communicated with the inlet of the pressure gas tank (12) through a medium-pressure gas supply main pipe (20), and a second water removal device (21) is arranged on the medium-pressure gas supply main pipe (20).

9. The governor hydraulic air supply system according to claim 8, characterized in that, An automatic air replenishing valve group (22) is arranged on the medium-pressure gas supply main pipe (20).

10. The hydraulic air supply system of the governor according to claim 1, characterized in that, A safety valve (23) is arranged on the pressure gas tank (12).

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