A lubrication station for electric turbomachines

Abstract

This application relates to the field of thin oil lubrication station technology and discloses a lubrication station for electric steam turbines, including two fixed cylinders. An inlet pipe is fixedly connected to the top of each cylinder, and an outlet pipe is fixedly connected to the bottom of each cylinder. A control valve is fixedly installed on both sides of the inlet and outlet pipes. A filter cartridge is detachably fixed to the inner side of each cylinder. This invention uses a drive mechanism to move a sliding component and a movable ring, causing high-pressure clean lubricating oil to be sprayed onto the outer wall of the filter cartridge through progressively decreasing height nozzles. Backflushing cleaning occurs when the nozzle openings are in contact with the outer wall of the filter cartridge. The sliding component moves to scrape away impurities adhering to the inner wall of the filter cartridge and pushes them to a point near the drain pipe for rapid discharge. This achieves filter cartridge regeneration without disassembling the filter cartridge and reduces the amount of oil required for backflushing, thus improving the reliability of continuous operation of the lubrication station.

Description

Technical Field

[0001] This application relates to the field of thin oil lubrication station technology, and more particularly to a lubrication station for electric steam turbines. Background Technology

[0002] A lubrication station is a centralized lubrication device that uses an oil pump to forcefully circulate lubricating oil, providing lubrication to the bearings and gears of high-speed rotating machinery. It is widely used in industries such as power, petrochemicals, metallurgy, shipbuilding, cement, papermaking, and general machinery. In the power turbine industry, existing lubrication stations typically include a common base, oil tank, oil pump, cooler, filter, accumulator, control instruments, and valves and pipelines. During unit operation, after the oil pump starts, the lubricating oil in the tank flows out from the tank outlet, passing sequentially through a check valve, pump unit, double-cylinder filter, cooler, and self-regulating valve, and is directly delivered to the bearings and thrust bearings of the turbine for lubrication and cooling.

[0003] A typical dual-cylinder filter includes two parallel filter cylinders, along with inlet and outlet pipes and a switching valve assembly. Each cylinder contains a removable filter element, such as a mesh filter or a cartridge filter. The side wall of the filter element has several filter holes to intercept solid impurities in the lubricating oil. The inlet pipe is connected to the upper or side of the cylinder, and the outlet pipe is connected to the bottom of the cylinder. The lubricating oil to be filtered enters the cylinder through the inlet pipe, passes through the filter holes of the filter element, and enters the annular cavity between the filter element and the inner wall of the cylinder. The clean lubricating oil flows out through the outlet pipe. During operation, the switching valve connects one cylinder to the inlet and outlet pipes, while the other cylinder is closed or in standby mode. When the filter element in the working cylinder becomes clogged with impurities, causing the inlet and outlet pressure difference to reach a set value, the switching valve reverses, connecting the standby cylinder to the pipeline and disconnecting the original working cylinder, thus enabling filter element replacement or cleaning without shutting down the system.

[0004] However, when the existing dual-cylinder filters are actually applied in the lubrication station of electric turbines, when the filter cartridges need to be cleaned due to blockage by impurities, it is usually necessary to disassemble the filter cartridges from the fixed cylinder for cleaning or replacement. After replacement, manual control of oil inlet and outlet of the cylinder is required. This process is not only cumbersome and time-consuming, but also causes impurities attached to the filter cartridges to drip or scatter during disassembly, resulting in oil pollution and environmental pollution around the equipment. In addition, if backwashing is used for online cleaning, such as injecting oil from the bottom of the fixed cylinder and draining oil from the top, this method requires a continuous injection of a large amount of lubricating oil to flush away the impurities attached to the outer wall of the filter cartridges. The amount of oil required for backwashing is large, and the amount of oil containing impurities to be treated subsequently also increases accordingly, resulting in resource waste and increased treatment costs, as well as poor filter cartridge cleaning and regeneration effect, affecting the service life and filtration efficiency of the filter. Summary of the Invention

[0005] This application proposes a lubrication station for electric steam turbines, which has the advantages of improving the regeneration effect of filter cartridges and reducing the amount of oil required for backwashing, thereby solving the problem that the manual maintenance process of filters in traditional lubrication stations is cumbersome and easily leads to oil contamination.

[0006] To achieve the above objectives, this application adopts the following technical solution: a lubrication station for an electric steam turbine, comprising two fixed cylinders, with an inlet pipe fixedly connected near the top of the two fixed cylinders, and an outlet pipe fixedly connected near the bottom of the two fixed cylinders. A control valve is fixedly installed on both sides of the inlet and outlet pipes. A filter cylinder is detachably fixedly installed on the inner side of the fixed cylinder. The side wall of the filter cylinder has several filter holes. A movable ring is slidably sleeved on the top of the filter cylinder. Sliding pipes are fixedly connected to both sides of the top of the movable ring. An annular flow cavity is opened on the inner side of the movable ring.

[0007] The movable ring has a spray hole on its inner side near the filter cartridge and also includes an adjustment mechanism. The adjustment mechanism is used to drive the movable ring to spray lubricating oil through the spray hole while moving vertically. After the movable ring moves to the lower stop point, the sliding member is positioned at the top of the movable ring.

[0008] Furthermore, the top of the filter cartridge is open, the spray hole is an annular hole, a pressure sensor is installed between the inlet pipe and the outlet pipe, and an exhaust valve is fixedly installed on the top of the fixed cylinder.

[0009] Furthermore, a fixed tube is slidably sleeved on the inner side of the sliding tube. The adjustment mechanism includes a moving rod and a driving mechanism. The moving rod is fixedly connected to the sliding tube. Connecting rods are fixedly connected to both sides of the top of the moving rod. The sliding element is fixedly connected to the corresponding connecting rod. A guide seat is fixedly connected to the top of the filter cartridge. The driving mechanism is used to drive the moving rod to move up and down. A drain pipe is fixedly sleeved on the bottom of the filter cartridge. A second control valve is fixedly installed on the body of the drain pipe.

[0010] Furthermore, the cavity of the fixed tube is connected to the cavity of the sliding tube, the fixed tube is fixedly sleeved with the fixed cylinder, the guide seat is annular and has an opening on its side wall, the sliding member is slidably sleeved on the inner side of the guide seat, and the inner diameter of the guide seat is adapted to the inner diameter of the filter cartridge.

[0011] Furthermore, the driving mechanism includes a first spring, one end of which is fixedly connected to the bottom of the filter cartridge, and the other end of which is fixedly connected to a sliding member.

[0012] Furthermore, the sliding member is configured as an annular plate, and the sliding member can move to contact the inner wall of the filter cartridge. The sliding member is used to scrape off impurities adhering to the inner wall of the filter cartridge.

[0013] Furthermore, the sliding member is disc-shaped, and the disc body of the sliding member has a plurality of filter holes, the diameter of which is adapted to the filter hole diameter of the filter cartridge.

[0014] Furthermore, the driving mechanism is configured as an electric push rod, which is fixedly mounted on the top of the fixed cylinder. The output rod of the electric push rod is fixedly connected to the moving rod, and the output rod of the electric push rod is slidably sleeved with the fixed cylinder.

[0015] Furthermore, an exchange tube is fixedly connected to one side of the fixed cylinder, and a liquid storage cylinder for temporarily storing clean lubricating oil is fixedly connected to one end of the exchange tube. A control valve No. 3 is fixedly installed on the body of the exchange tube, and a sliding plug is slidably sleeved on the inner side of the liquid storage cylinder. A spring No. 2 is fixedly connected to the side of the sliding plug away from the exchange tube, and one end of the spring No. 2 is fixedly connected to the liquid storage cylinder.

[0016] The beneficial effects of this invention are as follows:

[0017] This application provides a lubrication station for electric steam turbines. A drive mechanism, in conjunction with high-pressure lubricating oil flowing through a fixed pipe, drives a moving ring and sliding components. A backwashing oil pump pumps clean lubricating oil at high pressure into the flow chamber, which is then sprayed onto the outer wall of the filter cartridge through spray nozzles. During the movement of the spray nozzles, the filter cartridge's pores are backwashed layer by layer. This ensures close contact between the spray nozzles and the filter pores during backwashing, while avoiding the increased lubricating oil volume required by traditional bottom-injection and top-outflow methods. This reduces the amount of subsequent oil containing impurities, achieving efficient cleaning and regeneration of the filter cartridge. Simultaneously, the drive mechanism drives the sliding components to move synchronously, scraping off impurities adhering to the inner wall of the filter cartridge and pushing them to the drain pipe for discharge, further improving the regeneration effect. Online cleaning is performed without disassembling the filter cartridge, avoiding secondary oil contamination caused by disassembly and extending the maintenance cycle of the lubrication station.

[0018] Furthermore, by opening filter holes on the sliding component that match the diameter of the filter cartridge's filter holes, the sliding component can separate the top and bottom spaces inside the filter cartridge during its downward movement. This restricts the upward movement of scraped impurities and concentrates the scraped and backflushed impurities to the bottom of the filter cartridge. Simultaneously, the moving ring at the bottom sprays backflushing filter holes, which in turn carries the accumulated impurities more smoothly out of the drain pipe, further improving the regeneration effect and reducing the amount of oil required for backflushing, thereby improving the reliability of the lubrication station's continuous operation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0020] Figure 1 This is a schematic diagram of the overall structure of this application;

[0021] Figure 2 This is a schematic cross-sectional view of a portion of the structure at the fixed cylinder in this application;

[0022] Figure 3 This is a schematic cross-sectional view of the structure at the active ring of this application;

[0023] Figure 4 For this application Figure 3 Enlarged view of the structure at point A in the image;

[0024] Figure 5 This is a schematic cross-sectional view of the liquid storage cylinder structure in this application.

[0025] In the diagram: 1. Fixed cylinder; 2. Inlet pipe; 3. Outlet pipe; 4. Control valve No. 1; 5. Filter cartridge; 6. Movable ring; 7. Flow chamber; 8. Spray hole; 9. Fixed pipe; 10. Sliding pipe; 11. Drain pipe; 12. Control valve No. 2; 13. Sliding component; 14. Guide seat; 15. Spring No. 1; 16. Connecting rod; 17. Moving rod; 18. Electric push rod; 19. Exchange pipe; 20. Storage cylinder; 21. Control valve No. 3; 22. Sliding plug; 23. Spring No. 2. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and 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.

[0027] Example 1, as Figures 1-4A lubrication station for an electric steam turbine includes two fixed cylinders 1. An inlet pipe 2 is fixedly connected to the top of each cylinder 1, and an outlet pipe 3 is fixedly connected to the bottom of each cylinder 1. The inlet pipe 2 is connected to the return oil line on the side of the lubrication station closest to the electric steam turbine, and the outlet pipe 3 is connected to the return oil line on the side of the lubrication station closest to the oil tank. This allows the lubricating oil to be filtered through the internal filter structure of the fixed cylinder 1 and then returned to the oil tank of the lubrication station. A control valve 4 is fixedly installed on both sides of the inlet pipe 2 and the outlet pipe 3. Specifically, the two control valves 4 are located on both sides of the corresponding inlet port of the inlet pipe 2 and the two control valves 4 are located on both sides of the corresponding outlet port of the outlet pipe 3. (See reference...) Figure 2 The filter cylinder 5 is detachably fixed to the inner side of the fixed cylinder 1.

[0028] Specifically, the top part of the filter cartridge 5 is fixedly connected to the inner wall of the fixed cylinder 1 by screws. The top of the filter cartridge 5 is open. Several micro-filter holes are opened on the side wall of the filter cartridge 5 to filter impurities in the lubricating oil. A pressure sensor can be installed between the inlet pipe 2 and the outlet pipe 3 to detect the pressure difference of the lubricating oil at the inlet and outlet. The processor determines whether the filter cartridge 5 is blocked by the filtered impurities based on the feedback value of the pressure sensor. An exhaust valve is fixedly installed on the top of the fixed cylinder 1. By adjusting the opening of the corresponding control valve 4 at the top, the lubricating oil slowly enters the fixed cylinder 1 and the air in the fixed cylinder 1 is discharged to avoid affecting the subsequent filtration efficiency.

[0029] During operation, the No. 1 control valve 4 on the side of the working fixed cylinder 1 is kept open, while the No. 1 control valve 4 on the side of the standby fixed cylinder 1 is kept closed. The lubricating oil returning from the electric turbine components enters the single fixed cylinder 1 from near the top position through the inlet pipe 2. The lubricating oil then passes through the filter holes on the inside of the filter cylinder 5 and enters the cavity between the outer wall of the filter cylinder 5 and the inner wall of the fixed cylinder 1. The filtered impurities remain on the inside of the filter cylinder 5, and the filtered clean lubricating oil flows out through the outlet pipe 3 and enters the oil tank of the lubrication station through the pipeline. When the filter cylinder 5 is clogged with impurities, it needs to be switched online to the standby fixed cylinder 1 for operation. Several No. 1 control valves 4 are opened to allow both fixed cylinders 1 to perform filtration operations simultaneously. Then, the No. 1 control valve 4 on the side of the clog is closed, and the clogged fixed cylinder 1 is switched to the standby state.

[0030] A movable ring 6 is slidably sleeved on the top of the filter cartridge 5. Sliding tubes 10 are fixedly connected to both sides of the top of the movable ring 6. An annular flow cavity 7 is opened on the inner side of the movable ring 6. The flow cavity 7 is connected to the cavity of the sliding tube 10. A spray hole 8 is opened on the inner ring of the movable ring 6 near the filter cartridge 5. The spray hole 8 is set as an annular hole. The spray hole 8 can also be set as several spray holes. The spray hole 8 connects the flow cavity 7 and the inner cavity of the fixed cylinder 1. A fixed tube 9 is slidably sleeved on the inner side of the sliding tube 10. The cavity of the fixed tube 9 is connected to the cavity of the sliding tube 10. The fixed tube 9 is fixedly sleeved on the fixed cylinder 1. Corresponding fixed tubes 9 are connected to each other through pipes. Two corresponding fixed tubes 9 are connected to the backwash oil pump of the lubrication station through pipes equipped with valves, which are used to pump part of the oil in the oil tank into the fixed tube 9 at a higher oil pressure.

[0031] Two sliding tubes 10 are fixedly connected to the top of a moving rod 17, which is movably sleeved on the outside of the fixed tube 9. Connecting rods 16 are fixedly connected to both sides of the top of the moving rod 17. Sliding parts 13 are fixedly connected to the bottom of the two connecting rods 16. A guide seat 14 is fixedly connected to the top of the filter cartridge 5. The guide seat 14 is annular and has an opening on its side wall. When the sliding part 13 is located at the top position inside the guide seat 14, lubricating oil flows through the channel between the guide seat 14 and the fixed cylinder 1 and through the opening of the guide seat 14 into the inside of the filter cartridge 5. The sliding part 13 is slidably sleeved on the inside of the guide seat 14. The inner diameter of the guide seat 14 is adapted to the inner diameter of the filter cartridge 5. A driving mechanism is provided on the fixed cylinder 1. The driving mechanism is used to drive the moving rod 17 to move up and down.

[0032] In this embodiment, the driving mechanism includes a first spring 15. One end of the first spring 15 is fixedly connected to the bottom of the filter cylinder 5, and the other end of the first spring 15 is fixedly connected to the sliding member 13. The sliding member 13 is used to push the sliding member 13 to move vertically upward. In this embodiment, the sliding member 13 is set as an annular plate. A drain pipe 11 is fixedly sleeved at the bottom of the filter cylinder 5. The drain pipe 11 is connected to the collection box through a pipe. The lubricating oil containing impurities is introduced into the collection box through the drain pipe for collection and sedimentation, which facilitates subsequent centralized treatment. The drain pipe 11 is fixedly sleeved with the fixed cylinder 1. A second control valve 12 is fixedly installed on the pipe body of the drain pipe 11. When the corresponding fixed cylinder 1 is working, the second control valve 12 remains closed.

[0033] When cleaning and regenerating the filter cartridge 5, the corresponding fixed cartridge 1 is switched to standby mode, the corresponding second control valve 12 is opened, and clean lubricating oil is pumped into the fixed pipe 9 through the backwash oil pump. The lubricating oil flows through the fixed pipe 9, through the sliding pipe 10, and into the flow chamber 7. The high-pressure lubricating oil is sprayed out through the spray hole 8. At this time, the pressure relief of the spray hole 8 is less than the supply pressure of the lubricating oil in the flow chamber 7, so that the high-pressure lubricating oil is sprayed from the spray hole 8 onto the outer wall of the filter cartridge 5, thereby backwashing the filter holes of the filter cartridge 5.

[0034] At this time, the lubricating oil pressure in the flow chamber 7 is greater than the oil pressure in the fixed cylinder 1, which drives the movable ring 6 to move and descend against the elastic force of the first spring 15, thereby changing the height of the spray hole 8. This causes the spray hole 8 to spray oil while moving, until the movable ring 6 moves to the bottom of the filter cylinder 5. The oil containing impurities inside the filter cylinder 5 is discharged through the drain pipe 11, thereby backflushing and cleaning the filter holes on the outer wall of the entire filter cylinder 5. On the one hand, the spray hole 8 is backflushed in a close fit with the filter holes to ensure the backflushing cleaning effect. On the other hand, it avoids the need for a large amount of lubricating oil due to the method of backflushing by filling the bottom and draining the top of the fixed cylinder 1. Thus, the filter cylinder 5 is cleaned and regenerated with a reduced amount of lubricating oil required for backflushing, reducing the amount of lubricating oil to be processed in the subsequent collection box.

[0035] The movement of the sliding tube 10 drives the movement rod 17 to move, which in turn drives the connecting rod 16 to move, thereby causing the sliding member 13 to move and descend until it contacts the inner wall of the filter cartridge 5. The sliding member 13 scrapes away impurities that are not easily impacted by the lubricating oil spray on the inner wall of the filter cartridge 5, ensuring the cleaning effect on the filter cartridge 5. After backflushing, the second control valve 12 is closed, the oil supply is stopped, and the valve on the pipeline between the fixed tube 9 and the backflushing oil pump is closed. The sliding member 13 is driven to reset under the elastic force of the first spring 15, thus completing regeneration without disassembling and removing the filter cartridge 5, avoiding oil contamination. If necessary, the above backflushing action can be repeated.

[0036] Example 2, as Figures 1-4 Unlike the slider 13 in Embodiment 1, in this embodiment, the slider 13 is disc-shaped, and the disc body of the slider 13 has a number of filter holes, the diameter of which is adapted to the diameter of the filter holes in the filter cylinder 5.

[0037] During the process of the connecting rod 16 driving the sliding member 13 to move and descend, the sliding member 13 scrapes away the impurities attached to the inner wall of the filter cylinder 5 until it moves to the position near the bottom of the filter cylinder 5, that is, the bottom stop position. At this time, the movable ring 6 moves to the bottom of the filter cylinder 5 and is located at the bottom of the sliding member 13. Thus, during the process of the sliding member 13 moving inside the filter cylinder 5, the top and bottom are separated by the sliding member 13, allowing the lubricating oil to pass through while restricting the impurities from being disturbed and moving out of the inner side of the filter cylinder 5, further ensuring the regeneration effect of the filter cylinder 5. At the same time, when the sliding member 13 moves to the bottom stop, the distance between the sliding member 13 and the bottom wall of the filter cylinder 5 is small. Under this condition, the movable ring 6 continuously sprays high-pressure lubricating oil in a ring shape through the spray hole 8, so that the lubricating oil flow can more easily carry away the impurities scraped and collected by the sliding member from the drain pipe 11, thereby improving the regeneration effect and further reducing the amount of lubricating oil required for backflushing.

[0038] Example 3, as Figures 1-4Unlike the driving mechanism in Embodiment 2, in this embodiment, the driving mechanism is set as an electric push rod 18. The electric push rod 18 is fixedly installed on the top of the fixed cylinder 1. The output rod of the electric push rod 18 is fixedly connected to the moving rod 17. The output rod of the electric push rod 18 is slidably sleeved with the fixed cylinder 1. When the filter cartridge 5 is regenerated, the electric push rod 18 drives the moving rod 17 to move vertically, thereby driving the sliding member 13 and the movable ring 6 to move. This facilitates the adjustment of the moving speed of the movable ring 6 and ensures the backwashing cleaning effect on the filter cartridge 5.

[0039] Example 4, as Figures 1-5 Based on Embodiment 3, an exchange tube 19 is fixedly connected to one side of the fixed cylinder 1, and a liquid storage cylinder 20 for temporarily storing clean lubricating oil is fixedly connected to one end of the exchange tube 19. Specifically, a third control valve 21 is fixedly installed on the body of the exchange tube 19, and a sliding plug 22 is slidably sleeved on the inner side of the liquid storage cylinder 20. A second spring 23 is fixedly connected to the side of the sliding plug 22 away from the exchange tube 19, and one end of the second spring 23 is fixedly connected to the liquid storage cylinder 20.

[0040] During backflushing and cleaning of filter cartridge 5, control valve 12 remains closed, and control valve 21 is opened to pump high-pressure lubricating oil into fixed pipe 9. Electric push rod 18 drives moving rod 17 to descend, thereby driving sliding component 13 and movable ring 6 to descend at a rated speed. This causes movable ring 6 to move and backflush filter cartridge 5. At this time, the lubricating oil filled into fixed cylinder 1 enters liquid storage tank 20 through exchange pipe 19 and pushes sliding plug 22 to move away from exchange pipe 19 against the elastic force of spring 23. After sliding component 13 and movable ring 6 move to the lower stop point, control valve 12 is opened and control valve 21 is closed. At this time, the lubricating oil drives the impurities scraped and concentrated by sliding component 13 to be discharged through drain pipe 11, further reducing the amount of lubricating oil recovered with impurities and reducing the amount of subsequent centralized processing.

[0041] After the backflushing operation is completed, keep the No. 2 control valve 12 closed, open the No. 3 control valve 21 and the corresponding bottom No. 1 control valve 4, and the No. 2 spring 23 drives the sliding plug 22 to move and reset against the oil pressure of the outlet pipe 3; the No. 2 spring 23 can also be replaced by an oil pump set on the side of the exchange pipe 19 near the liquid storage tank 20, which is used to draw the lubricating oil back into the oil tank of the lubrication station.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lubrication station for an electric steam turbine, comprising two fixed cylinders (1), with an inlet pipe (2) fixedly connected to the top of each of the two fixed cylinders (1), and an outlet pipe (3) fixedly connected to the bottom of each of the two fixed cylinders (1), wherein a control valve (4) is fixedly installed on both sides of the inlet pipe (2) and the outlet pipe (3), characterized in that, The filter cylinder (5) is detachably fixed to the inner side of the fixed cylinder (1). The side wall of the filter cylinder (5) has several filter holes. The top of the filter cylinder (5) is slidably sleeved with a movable ring (6). Sliding tubes (10) are fixedly connected to both sides of the top of the movable ring (6). The inner side of the movable ring (6) has an annular flow cavity (7). The inner ring of the movable ring (6) near the filter cartridge (5) is provided with a spray hole (8) and also includes an adjustment mechanism. The adjustment mechanism is used to drive the movable ring (6) to spray lubricating oil through the spray hole (8) while moving vertically. After the movable ring (6) moves to the lower stop point, the sliding member (13) is located at the top of the movable ring (6).

2. The lubrication station for an electric steam turbine according to claim 1, characterized in that, The top of the filter cartridge (5) is open, the spray hole (8) is an annular hole, a pressure sensor is provided between the inlet pipe (2) and the outlet pipe (3), and an exhaust valve is fixedly provided on the top of the fixed cylinder (1).

3. A lubrication station for an electric steam turbine according to claim 1, characterized in that, The sliding tube (10) is slidably sleeved with a fixed tube (9). The adjustment mechanism includes a moving rod (17) and a driving mechanism. The moving rod (17) is fixedly connected to the sliding tube (10). Both sides of the top of the moving rod (17) are fixedly connected with connecting rods (16). The sliding part (13) is fixedly connected with the corresponding connecting rod (16). The top of the filter cylinder (5) is fixedly connected with a guide seat (14). The driving mechanism is used to drive the moving rod (17) to move up and down. The bottom of the filter cylinder (5) is fixedly sleeved with a drain pipe (11). The body of the drain pipe (11) is fixedly equipped with a second control valve (12).

4. A lubrication station for an electric steam turbine according to claim 3, characterized in that, The cavity of the fixed tube (9) is connected to the cavity of the sliding tube (10). The fixed tube (9) is fixedly sleeved with the fixed cylinder (1). The guide seat (14) is annular and has an opening on its side wall. The sliding member (13) is slidably sleeved on the inner side of the guide seat (14). The inner diameter of the guide seat (14) is adapted to the inner diameter of the filter cylinder (5).

5. A lubrication station for an electric steam turbine according to claim 3, characterized in that, The driving mechanism includes a first spring (15), one end of which is fixedly connected to the bottom of the filter cylinder (5), and the other end of which is fixedly connected to the sliding member (13).

6. A lubrication station for an electric steam turbine according to claim 3, characterized in that, The sliding member (13) is configured as an annular plate. The sliding member (13) can move to contact the inner wall of the filter cylinder (5). The sliding member (13) is used to scrape off the impurities attached to the inner wall of the filter cylinder (5).

7. A lubrication station for an electric steam turbine according to claim 3, characterized in that, The sliding member (13) is disc-shaped, and the disc body of the sliding member (13) has a plurality of filter holes, the diameter of which is adapted to the filter hole diameter of the filter cylinder (5).

8. A lubrication station for an electric steam turbine according to claim 3, characterized in that, The driving mechanism is set as an electric push rod (18), which is fixedly set on the top of the fixed cylinder (1). The output rod of the electric push rod (18) is fixedly connected to the moving rod (17), and the output rod of the electric push rod (18) is slidably sleeved with the fixed cylinder (1).

9. A lubrication station for an electric steam turbine according to claim 8, characterized in that, A replacement tube (19) is fixedly connected to one side of the fixed cylinder (1). A liquid storage cylinder (20) for temporarily storing clean lubricating oil is fixedly connected to one end of the replacement tube (19). A third control valve (21) is fixedly installed on the body of the replacement tube (19). A sliding plug (22) is slidably sleeved on the inner side of the liquid storage cylinder (20). A second spring (23) is fixedly connected to the side of the sliding plug (22) away from the replacement tube (19). One end of the second spring (23) is fixedly connected to the liquid storage cylinder (20).

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