A filter device for a turbine EH oil system

Abstract

The utility model discloses a steam turbine EH oil system oil filter equipment relates to steam turbine high pressure fire -resistant oil system technical field, this steam turbine EH oil system oil filter equipment, including EH oil tank, EH oil pump, first EH oil regenerative pump and second EH oil regenerative pump, the output of second EH oil regenerative pump is provided with filter assembly, the filter assembly includes second diatomite filter, cellulose primary filter and cellulose secondary filter, and second diatomite filter, cellulose primary filter and cellulose secondary filter are in turn arranged, the output of first EH oil regenerative pump is provided with first diatomite filter, the output of first diatomite filter is provided with resin filter, and the scheme has solved the problem that the existing steam turbine long -time operation, owing to on -line oil filter device aging, and manual oil filter time is shorter, causes EH oil frequently appears acid value, resistivity, granularity unqualified, leads to servo valve frequent failure.

Description

Technical Field

[0001] This utility model relates to the technical field of high-pressure fire-resistant oil systems for steam turbines, specifically an oil filtration device for an EH oil system of a steam turbine. Background Technology

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power unit. High-temperature and high-pressure steam passes through a fixed nozzle, becomes an accelerated airflow, and is then injected onto the blades, causing the rotor equipped with a row of blades to rotate and perform work.

[0003] For example, the Chinese authorized patent with announcement number CN214118597U (a high-pressure fire-resistant oil supply system for a steam turbine) includes an oil supply system and an actuator. The oil supply system, actuator, and manual stop valve are connected sequentially through oil pipelines. The oil supply system includes an EH oil station and a regeneration device. The EH oil station includes an oil tank and a high-pressure oil pump. A high-pressure accumulator and a regeneration device are sequentially arranged at the outlet of the oil tank. The actuator includes a high-pressure quick-closing valve oil actuator, a high-adjustment oil actuator, and a low-adjustment oil actuator connected in sequence. A high-pressure accumulator is arranged after the high-adjustment oil actuator. The quick-closing valve oil actuator adopts a single-sided oil inlet method, while the high-adjustment oil actuator and the low-adjustment oil actuator both adopt a double-sided oil inlet method.

[0004] However, after long-term operation, existing steam turbines experience frequent issues with EH oil, such as aging of the online oil filtration device and short manual filtration time, leading to unqualified acid value, resistivity, and particle size, which in turn causes frequent servo valve failures. Therefore, this does not meet the current requirements. To address this, we propose an oil filtration device for the steam turbine EH oil system. Utility Model Content

[0005] The purpose of this utility model is to provide an oil filtration device for the EH oil system of a steam turbine, in order to solve the problem mentioned in the background art that after long-term operation of existing steam turbines, due to the aging of the online oil filtration device and the short manual oil filtration time, the EH oil frequently fails to meet the standards for acid value, resistivity, and particle size, leading to frequent servo valve failures.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oil filtration device for a steam turbine EH oil system, comprising: an EH oil tank, an EH oil pump, a first EH oil regeneration pump, and a second EH oil regeneration pump. The output end of the second EH oil regeneration pump is provided with a filter assembly, which includes a second diatomaceous earth filter, a cellulose primary filter, and a cellulose secondary filter, arranged sequentially. The output end of the first EH oil regeneration pump is provided with a first diatomaceous earth filter, and the output end of the first diatomaceous earth filter is provided with a resin filter.

[0007] Preferably, the bottom of the second diatomaceous earth filter, the primary cellulose filter, and the secondary cellulose filter are all provided with mounting bases, the lower end of the mounting bases is provided with support bases, and a connecting pipe is provided on one side of the mounting bases.

[0008] Preferably, the cellulose secondary filter is externally provided with a first stabilizing component, and the second diatomaceous earth filter, the cellulose primary filter and the cellulose secondary filter are connected through the first stabilizing component. The second diatomaceous earth filter is externally provided with a second stabilizing component, and the second diatomaceous earth filter and the cellulose primary filter are connected through the second stabilizing component. Furthermore, multiple first stabilizing components and multiple second stabilizing components are provided.

[0009] Preferably, the first stabilizing component includes a first stabilizing hoop and a first connecting frame, and multiple first stabilizing hoops are provided, and adjacent first stabilizing hoops are fixed together by heat fusion through the first connecting frame.

[0010] Preferably, the second stabilizing component includes a second stabilizing hoop and a second connecting frame, and two second stabilizing hoops are provided, and the two second stabilizing hoops are fixed together by heat fusion through the second connecting frame. One side surface of both the first stabilizing hoop and the second stabilizing hoop is provided with an installation opening.

[0011] Preferably, both the upper and lower surfaces of the first connecting frame and the second connecting frame are provided with connecting slots, and connecting plates are inserted into the connecting slots.

[0012] Preferably, both the first stabilizing component and the second stabilizing component are made of engineering plastics.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model, by adding a filter component, realizes the design and manufacture of a set of filters consisting of a second diatomaceous earth filter, a primary cellulose filter and a secondary cellulose filter on the basis of the original equipment. This reduces impurities in EH oil, lowers acid value, increases resistivity, and improves EH oil quality, thereby improving the economic efficiency of the unit and extending the service life of the equipment. The EH oil tanks of each unit can achieve 24-hour uninterrupted online oil filtration, effectively playing the role of oil purification, reducing the time for personnel to filter oil on-site, reducing the workload of personnel, and reducing abnormalities such as oil leakage caused by improper operation of the oil filter. After on-site trial operation, the expected effect was achieved. This solves the problem that after the existing steam turbine has been running for a long time, due to the aging of the online oil filtration device and the short manual oil filtration time, the EH oil frequently has unqualified acid value, resistivity and particle size, which leads to frequent failure of the servo valve.

[0015] (2) By fitting the first stabilizing component over the outside of the second diatomaceous earth filter, the cellulose primary filter and the cellulose secondary filter, the connection stability of the second diatomaceous earth filter, the cellulose primary filter and the cellulose secondary filter is improved, collision and tilting are avoided, stability and safety are improved, and it is not easy to be damaged by collision and tilting. When the upper and lower first stabilizing components are connected, the two ends of the connecting plate are inserted into the connecting slots of the two first stabilizing components respectively to limit the two first stabilizing components and further improve stability. The second stabilizing component fixes the second diatomaceous earth filter and the cellulose primary filter in the same way, so as to facilitate the connection of filters of different heights and improve flexibility. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the filter assembly structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the first stabilizing component structure of this utility model;

[0018] Figure 3 This is a bottom view of the first stabilizing component of this utility model;

[0019] Figure 4 This is a schematic diagram of the second stabilizing component structure of this utility model;

[0020] Figure 5 This is a system diagram of the present invention;

[0021] In the diagram: 1. EH oil tank; 2. EH oil pump; 3. First EH oil regeneration pump; 4. Second EH oil regeneration pump; 5. First diatomaceous earth filter; 6. Resin filter; 7. Second diatomaceous earth filter; 8. Cellulose primary filter; 9. Cellulose secondary filter; 10. Filter assembly; 11. Mounting base; 12. Connecting pipe; 13. Support base; 14. First stabilizing assembly; 15. Second stabilizing assembly; 16. First stabilizing hoop; 17. First connecting frame; 18. Connecting slot; 19. Connecting insert plate; 20. Mounting opening; 21. Second stabilizing hoop; 22. Second connecting frame. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-5An embodiment of this utility model provides an oil filtration device for a steam turbine EH oil system, comprising: an EH oil tank 1, an EH oil pump 2, a first EH oil regeneration pump 3, and a second EH oil regeneration pump 4. The output end of the second EH oil regeneration pump 4 is provided with a filter assembly 10, which includes a second diatomaceous earth filter 7, a cellulose primary filter 8, and a cellulose secondary filter 9, arranged in sequence. The output end of the first EH oil regeneration pump 3 is provided with a first diatomaceous earth filter 5, and the output end of the first diatomaceous earth filter 5 is provided with a resin filter 6. The bottom ends of the second diatomaceous earth filter 7, the cellulose primary filter 8, and the cellulose secondary filter 9 are all provided with mounting bases 11, the lower end of the mounting bases 11 is provided with a support base 13, and a connecting pipe 12 is provided on one side of the mounting bases 11.

[0024] By adding filter component 10, a multi-functional online oil filtration device consisting of a second diatomaceous earth filter 7, a primary cellulose filter 8, and a secondary cellulose filter 9 is designed and manufactured based on the existing equipment. This device filters impurities and reduces acidity. It is connected to the existing equipment via connecting pipe 12. Figure 5 As shown, the EH oil tank 1 of each unit can achieve 24-hour uninterrupted online oil filtration, which effectively purifies the oil quality, reduces the workload of personnel and prevents abnormalities such as oil leakage caused by improper operation of the oil filter, thus ensuring the safe and stable operation of the unit's regulation system.

[0025] A first stabilizing component 14 is externally disposed on the cellulose secondary filter 9, and the second diatomaceous earth filter 7, the cellulose primary filter 8, and the cellulose secondary filter 9 are connected through the first stabilizing component 14. A second stabilizing component 15 is externally disposed on the second diatomaceous earth filter 7, and the second diatomaceous earth filter 7 and the cellulose primary filter 8 are connected through the second stabilizing component 15. Multiple first stabilizing components 14 and 15 are provided. The first stabilizing component 14 includes a first stabilizing hoop 16 and a first connecting frame 17, and multiple first stabilizing hoops 16 are provided, with adjacent first stabilizing hoops... The stabilizing hoops 16 are fixed together by heat fusion through the first connecting frame 17. The second stabilizing component 15 includes a second stabilizing hoop 21 and a second connecting frame 22. There are two second stabilizing hoops 21, and the two second stabilizing hoops 21 are fixed together by heat fusion through the second connecting frame 22. One side surface of the first stabilizing hoop 16 and the second stabilizing hoop 21 are provided with an installation opening 20. The upper and lower surfaces of the first connecting frame 17 and the second connecting frame 22 are provided with a connecting slot 18. A connecting insert plate 19 is inserted into the inside of the connecting slot 18. The first stabilizing component 14 and the second stabilizing component 15 are both made of engineering plastics.

[0026] The first stabilizing component 14 is fitted over the outside of the second diatomaceous earth filter 7, the cellulose primary filter 8, and the cellulose secondary filter 9. The three first stabilizing clamps 16 are fitted over the outside of the second diatomaceous earth filter 7, the cellulose primary filter 8, and the cellulose secondary filter 9 through the installation openings 20, which improves the connection stability of the second diatomaceous earth filter 7, the cellulose primary filter 8, and the cellulose secondary filter 9, avoids collision and tilting, improves stability and safety, and is not easily damaged by collision and tilting. When the upper and lower first stabilizing components 14 are connected, the two ends of the connecting plate 19 are respectively inserted into the connecting slots 18 of the two first stabilizing components 14 to limit the two first stabilizing components 14 and further improve stability.

[0027] The second stabilizing component 15 secures the second diatomaceous earth filter 7 and the cellulose primary filter 8 in the same manner, thereby facilitating the connection of filters of different heights and improving flexibility.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A turbine EH oil system filtration device, comprising an EH oil tank (1), an EH oil pump (2), a first EH oil regeneration pump (3), and a second EH oil regeneration pump (4), characterized in that: The output end of the second EH oil regeneration pump (4) is provided with a filter assembly (10), the filter assembly (10) includes a second diatomaceous earth filter (7), a cellulose primary filter (8) and a cellulose secondary filter (9), and the second diatomaceous earth filter (7), the cellulose primary filter (8) and the cellulose secondary filter (9) are arranged in sequence. The output end of the first EH oil regeneration pump (3) is provided with a first diatomaceous earth filter (5), and the output end of the first diatomaceous earth filter (5) is provided with a resin filter (6).

2. The turbine EH oil system oil filtration device according to claim 1, characterized in that: The bottom of the second diatomaceous earth filter (7), the cellulose primary filter (8) and the cellulose secondary filter (9) are all provided with mounting bases (11), the lower end of the mounting base (11) is provided with a support base (13), and a connecting pipe (12) is provided on one side of the mounting base (11).

3. The turbine EH oil system oil filtration device according to claim 1, characterized in that: The cellulose secondary filter (9) is externally provided with a first stabilizing component (14), and the second diatomaceous earth filter (7), the cellulose primary filter (8) and the cellulose secondary filter (9) are connected through the first stabilizing component (14). The second diatomaceous earth filter (7) is externally provided with a second stabilizing component (15), and the second diatomaceous earth filter (7) and the cellulose primary filter (8) are connected through the second stabilizing component (15). Multiple first stabilizing components (14) and second stabilizing components (15) are provided.

4. The turbine EH oil system filtration device according to claim 3, characterized in that: The first stabilizing component (14) includes a first stabilizing hoop (16) and a first connecting frame (17), and multiple first stabilizing hoops (16) are provided, and two adjacent first stabilizing hoops (16) are fixed by heat fusion through the first connecting frame (17).

5. The turbine EH oil system filtration device according to claim 4, characterized in that: The second stabilizing component (15) includes a second stabilizing hoop (21) and a second connecting frame (22), and there are two second stabilizing hoops (21), and the two second stabilizing hoops (21) are fixed together by heat fusion through the second connecting frame (22). The first stabilizing hoop (16) and the second stabilizing hoop (21) are provided with an installation opening (20) on one side surface.

6. The turbine EH oil system filtration device according to claim 5, characterized in that: The first connecting frame (17) and the second connecting frame (22) are provided with connecting slots (18) on their upper and lower surfaces, and connecting plates (19) are inserted into the connecting slots (18).

7. The turbine EH oil system oil filtration device according to claim 3, characterized in that: The first stabilizing component (14) and the second stabilizing component (15) are both made of engineering plastics.

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