A steam engine oil tank filtering structure

Abstract

The utility model discloses a steam turbine oil tank filter structure, including two top cover plates of fixed in steam turbine oil tank body top surface, the bottom of metal frame is inserted to the inboard of steam turbine oil tank body through bar -shaped spigot, and the inboard of metal frame is provided with filter core, the steam turbine oil tank filter structure of the application, through design slanted guide groove cooperation magnetism strip on filter core, effectively solved the problem of inconvenient and metal scrap recycling wear and tear of impurity cleaning in the prior art, in particular, slanted guide groove can guide the scrap that filter core is close to oil inlet side one side intercepts to groove bottom, avoids its direct drop in the bottom of oil tank, thereby facilitating the concentrated cleaning of subsequent, magnetism strip can adsorb the metal component in scrap, further reduce the metal pollution in oil tank, protect steam turbine parts from wearing and tearing, simultaneously, the design of top locking structure and sealing mechanism makes the disassembly and maintenance of filter core become simple and fast, shortens the maintenance time, and reduces the maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of steam turbine oil tanks, specifically relating to a steam turbine oil tank filtration structure. Background Technology

[0002] During the operation of a power plant, the steam turbine, as the core power equipment, is crucial for stable and efficient operation. The steam turbine oil tank, as a key component of the steam turbine lubrication system, undertakes the important tasks of storing, cooling, and purifying lubricating oil. During the operation of the steam turbine, the lubricating oil not only lubricates the bearings and reduces wear, but also effectively cools moving parts to prevent overheating and damage. However, with the long-term operation of the steam turbine, various impurities, such as metal shavings and other impurities, will inevitably mix into the lubricating oil in the tank. If these shavings and impurities are not removed in time, they will seriously affect the performance of the lubricating oil and thus threaten the safe operation of the steam turbine.

[0003] Currently, power plant turbine oil tanks commonly employ filtration structures to intercept and remove impurities from the lubricating oil. Traditional filtration structures are typically composed of fiberglass, stainless steel woven mesh, and polyester materials to form a filter element that intercepts impurities as the oil passes through, preventing them from entering the lubrication system. However, existing filtration structures have significant drawbacks in practical applications: Firstly, most of the impurities intercepted by the filter element fall directly to the bottom of the oil tank. Over time, these impurities gradually accumulate to form sludge, which is not only difficult to clean but may also corrode the inside of the oil tank, affecting its service life. In addition, the installation and maintenance of existing filtration structures are also inconvenient. Since the filter element is usually fixed inside the oil tank, replacement or cleaning requires disassembling a large number of related components, which is cumbersome and time-consuming, increasing maintenance costs and downtime. Therefore, this utility model proposes a turbine oil tank filtration structure. Utility Model Content

[0004] The purpose of this invention is to provide a gas engine oil tank filter structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a steam engine oil tank filter structure, comprising...

[0006] Two top cover plates are fixed to the top surface of the turbine oil tank. A metal frame is welded to the bottom surface of the top cover plate. A strip-shaped slot for inserting the metal frame is opened on the top surface of the turbine oil tank. The bottom end of the metal frame is inserted into the inside of the turbine oil tank through the strip-shaped slot. A filter element is provided on the inside of the metal frame.

[0007] The filter element has multiple inclined guide grooves on one side near the oil inlet pipe, and a magnetic strip is embedded at the bottom of the inclined guide groove.

[0008] It also includes two locking structures located between the turbine oil tank and the top cover.

[0009] Preferably, the locking structure includes a top seat fixed to the top surface of the turbine oil tank, a threaded base rod fixed to the top surface of the top seat, a locking block and a locking ring sleeved on the surface of the threaded base rod, and the end of the locking block extends to the top surface of the top cover plate to move the top cover plate down and lock it, and the locking ring is located on top of the locking block and locks the locking block.

[0010] Preferably, the locking structure further includes a limiting block fixed to the top surface of the top cover plate, and the end surface of the locking block is provided with a limiting hole corresponding to the limiting block, and the limiting block is inserted into the limiting hole.

[0011] Preferably, a U-shaped sealing gasket is embedded in the bottom surface of the top cover plate, the bottom surface of the U-shaped sealing gasket is provided with an integrated U-shaped sealing protrusion, and the top surface of the turbine oil tank body is provided with a U-shaped sealing top groove corresponding to the U-shaped sealing protrusion around the strip-shaped inlet.

[0012] Preferably, rubber side gaskets are embedded on both sides of the filter element at the bottom of the strip-shaped inlet, and the side of the rubber side gasket is provided with an integrated side sealing strip, which abuts against the inner wall of the turbine oil tank.

[0013] Preferably, the cross-section of the U-shaped sealing protrusion is semi-circular, and the cross-section of the side sealing protrusion is semi-circular.

[0014] Preferably, a chip collection groove is formed on the bottom surface of the metal frame relative to the left side of the filter element.

[0015] Preferably, the bottom surface of the metal frame is provided with a positioning groove, and the bottom inner wall of the turbine oil tank is fixed with a positioning block corresponding to the positioning groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: The steam turbine oil tank filter structure proposed in this application effectively solves the problems of inconvenient impurity cleaning and metal debris circulation wear in the prior art by designing inclined guide grooves and magnetic strips on the filter element. Specifically, the inclined guide grooves can guide the debris intercepted on the side of the filter element near the oil inlet to the bottom of the groove, preventing it from falling directly to the bottom of the oil tank, thus facilitating subsequent centralized cleaning; the magnetic strips can adsorb the metal components in the debris, further reducing metal contamination in the oil tank and protecting the turbine components from wear. At the same time, the design of the top locking structure and sealing mechanism makes the disassembly and maintenance of the filter element simple and quick, greatly shortening the maintenance time and reducing the maintenance cost. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This utility model Figure 2 A magnified view of a portion of region B in the middle;

[0020] Figure 4 This utility model Figure 2 A magnified view of a portion of region C in the middle;

[0021] Figure 5 This utility model Figure 1 A magnified view of a portion of region A in the middle;

[0022] In the diagram: 1. Top cover plate; 11. U-shaped sealing gasket; 12. U-shaped sealing protrusion; 2. Locking structure; 21. Top seat; 22. Threaded base rod; 23. Locking ring; 24. Locking pressure block; 25. Limiting hole; 26. Limiting block; 3. Turbine oil tank body; 31. Strip-shaped inlet; 32. Positioning bottom block; 33. U-shaped sealing top groove; 4. Oil inlet pipe; 5. Metal frame; 51. Chip collection groove; 52. Positioning bottom groove; 53. Rubber side gasket; 531. Side sealing protrusion; 6. Filter element; 61. Inclined guide groove; 62. Magnetic strip. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example

[0025] Please see Figures 1 to 5 This is an embodiment of the present utility model, which provides the following technical solution: a steam engine oil tank filter structure, including...

[0026] Two top cover plates 1 are fixed to the top surface of the turbine oil tank 3. A metal frame 5 is welded to the bottom surface of the top cover plate 1. A strip-shaped insertion port 31 for inserting the metal frame 5 is opened on the top surface of the turbine oil tank 3. The bottom end of the metal frame 5 is inserted into the inner side of the turbine oil tank 3 through the strip-shaped insertion port 31. A filter element 6 is provided on the inner side of the metal frame 5. The filter element 6 is made of glass fiber, stainless steel woven mesh and polyester material through a lamination composite process. The surface forms a microporous structure, which allows some debris and impurities to be filtered out when the oil in the turbine oil tank 3 passes through the filter element 6.

[0027] It should be noted that the oil circulation principle of the turbine oil tank 3 itself does not involve the "filtration structure" of this application, so it will not be elaborated on here. Simply put, the external oil pump sends the turbine lubricating oil into the turbine oil tank 3 through the oil inlet pipe 4 and then discharges it from the oil outlet at the other end of the turbine oil tank 3 back into the turbine lubrication system oil circuit.

[0028] Multiple inclined guide grooves 61 are laser-cut on one side of the filter element 6 near the oil inlet pipe 4, and magnetic strips 62 are embedded at the bottom of the inclined guide grooves 61. The inclined guide grooves 61 designed on the side of the filter element 6 near the oil inlet pipe 4 allow the filter element 6 to filter out debris and impurities when the oil flows from the oil inlet pipe 4 into the turbine oil tank 3 and flows to the oil outlet on the other side of the turbine oil tank 3. These debris and impurities intercepted by the filter element 6 are all located on the side of the filter element 6 near the oil inlet pipe 4. Then, these debris and impurities can fall into the bottom of the inclined guide grooves 61 under the guidance of the inclined guide grooves 61 and be effectively collected, avoiding the intercepted debris and impurities falling directly to the bottom of the turbine oil tank 3 and being difficult to clean. In addition, some metal debris in the debris and impurities that fall into the bottom of the inclined guide grooves 61 can be attracted by the magnetic strips 62, which facilitates subsequent cleaning.

[0029] It also includes two locking structures 2 set between the turbine oil tank body 3 and the top cover plate 1, which are used to lock the top cover plate 1 during daily use to ensure the installation stability of the metal frame 5 and the filter element 6. Afterwards, it is only necessary to periodically release the locking structure 2 from the top cover plate 1 and pull out the metal frame 5 to clean and maintain the surface of the filter element 6.

[0030] In this embodiment, preferably, the locking structure 2 includes a top seat 21 welded and fixed to the top surface of the turbine oil tank 3, a threaded base rod 22 welded and fixed to the top surface of the top seat 21, a locking pressure block 24 sleeved on the surface of the threaded base rod 22, and a locking ring 23. The locking ring 23 is threadedly connected to the threaded base rod 22. The locking ring 23 is similar to a locking nut. The end of the locking pressure block 24 extends to the top surface of the top cover plate 1 to move the top cover plate 1 down and lock it. The locking ring 23 is on top of the locking pressure block 24 and locks the locking pressure block 24, ensuring the installation stability of the top cover plate 1.

[0031] In this embodiment, preferably, the locking structure 2 further includes a limiting block 26 welded and fixed to the top surface of the top cover plate 1, and the end surface of the locking pressure block 24 is provided with a limiting hole 25 corresponding to the limiting block 26. The limiting block 26 is inserted into the limiting hole 25, so that when the end of the locking pressure block 24 is pressed against the top of the top cover plate 1, it can be effectively limited and will not rotate, ensuring the limiting stability of the locking pressure block 24 on the top cover plate 1. If it is necessary to release the locking of the top cover plate 1 later, it is only necessary to remove the locking block 26. Pinch the locking ring 23 and rotate it counterclockwise to release it from pressing the locking block 24. Then move the locking block 24 upward so that the limiting block 26 moves out of the limiting hole 25. Then rotate the locking block 24 around the threaded base rod 22 so that the end of the locking block 24 rotates away from the top of the top cover plate 1. This quickly releases the locking limit on the top cover plate 1. At this time, lift the top cover plate 1 to remove the metal frame 5 for cleaning and maintenance of the filter element 6, improving the convenience of subsequent maintenance.

[0032] In this embodiment, preferably, a U-shaped sealing gasket 11 is embedded in the bottom surface of the top cover plate 1. Embedding installation means that the bottom surface of the top cover plate 1 has an embedding groove for the U-shaped sealing gasket 11 to be installed, and the U-shaped sealing gasket 11 is installed in the embedding groove. The bottom surface of the U-shaped sealing gasket 11 has an integral U-shaped sealing protrusion 12. Both are made of fluororubber material, which will undergo elastic deformation when squeezed. The top surface of the turbine oil tank body 3 has a U-shaped sealing top groove 33 corresponding to the U-shaped sealing protrusion 12 around the strip-shaped inlet 31. When the top cover plate 1 is locked and pressed down by the locking structure 2, the U-shaped sealing protrusion 12 is squeezed into the U-shaped sealing top groove 33 for effective sealing and to prevent oil leakage at the strip-shaped inlet 31.

[0033] In this embodiment, preferably, rubber side gaskets 53 are embedded in both sides of the filter element 6 at the bottom of the strip-shaped inlet 31. This embedding refers to the metal frame 5 having a strip-shaped groove on its side for the rubber side gasket 53 to be embedded in. The rubber side gasket 53 is installed in this groove, ensuring that it does not interfere with the normal insertion and removal of the metal frame 5. The rubber side gasket 53 also has an integrated side sealing protrusion 531 on its side. Both are made of fluororubber, which undergoes elastic deformation when compressed. This ensures that the side sealing protrusion 531 undergoes elastic deformation when the metal frame 5 is inserted into or removed from the strip-shaped inlet 31, without affecting the normal insertion and removal of the metal frame 5. The side sealing protrusion 531 abuts against the inner wall of the turbine oil tank 3, further sealing the strip-shaped inlet 31 and preventing oil leakage.

[0034] In this embodiment, preferably, the cross-section of the U-shaped sealing protrusion 12 is semi-circular, and the cross-section of the side sealing protrusion 531 is semi-circular.

[0035] In this embodiment, preferably, a chip collection groove 51 is provided on the bottom surface of the metal frame 5 relative to the left side of the filter element 6, so that a small portion of the debris and impurities intercepted by the filter element 6 can fall into the chip collection groove 51 and be collected.

[0036] In this embodiment, preferably, a positioning groove 52 is provided on the bottom surface of the metal frame 5, and a positioning block 32 corresponding to the positioning groove 52 is welded and fixed to the inner wall of the bottom end of the turbine oil tank body 3. When the bottom end of the metal frame 5 is inserted into the inner side of the turbine oil tank body 3, when the bottom end of the metal frame 5 is in contact with the inner wall of the bottom end of the turbine oil tank body 3, the positioning block 32 will enter the positioning groove 52 to support and position the metal frame 5.

[0037] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steam engine oil tank filter structure, characterized in that: include Two top cover plates (1) are fixed on the top surface of the turbine oil tank body (3). A metal frame (5) is welded and fixed to the bottom surface of the top cover plate (1). A strip-shaped socket (31) for inserting the metal frame (5) is opened on the top surface of the turbine oil tank body (3). The bottom end of the metal frame (5) is inserted into the inner side of the turbine oil tank body (3) through the strip-shaped socket (31). A filter element (6) is provided on the inner side of the metal frame (5). The filter element (6) has multiple inclined guide grooves (61) on one side near the oil inlet pipe (4), and a magnetic strip (62) is embedded at the bottom of the inclined guide groove (61). It also includes two locking structures (2) disposed between the turbine oil tank body (3) and the top cover plate (1).

2. The engine oil tank filter structure according to claim 1, characterized in that: The locking structure (2) includes a top seat (21) fixed on the top surface of the turbine oil tank body (3), a threaded base rod (22) fixed on the top surface of the top seat (21), a locking block (24) sleeved on the surface of the threaded base rod (22), and a locking ring (23). The end of the locking block (24) extends to the top surface of the top cover plate (1) to lock the top cover plate (1) down. The locking ring (23) is located on top of the locking block (24) and locks the locking block (24).

3. The engine oil tank filter structure according to claim 2, characterized in that: The locking structure (2) also includes a limiting block (26) fixed on the top surface of the top cover plate (1), and the end surface of the locking block (24) is provided with a limiting hole (25) corresponding to the limiting block (26), and the limiting block (26) is inserted into the limiting hole (25).

4. The engine oil tank filter structure according to claim 1, characterized in that: The bottom surface of the top cover plate (1) is embedded with a U-shaped sealing gasket (11), the bottom surface of the U-shaped sealing gasket (11) is provided with an integrated U-shaped sealing protrusion (12), and the top surface of the turbine oil tank body (3) is provided with a U-shaped sealing top groove (33) corresponding to the U-shaped sealing protrusion (12) around the strip-shaped inlet (31).

5. The engine oil tank filter structure according to claim 4, characterized in that: Rubber side gaskets (53) are embedded on both sides of the filter element (6) at the bottom of the strip-shaped inlet (31), and the side of the rubber side gasket (53) is provided with an integrated side sealing strip (531), which abuts against the inner wall of the turbine oil tank body (3).

6. The engine oil tank filter structure according to claim 5, characterized in that: The cross-section of the U-shaped sealing protrusion (12) is semi-circular, and the cross-section of the side sealing protrusion (531) is semi-circular.

7. The engine oil tank filter structure according to claim 1, characterized in that: The bottom surface of the metal frame (5) is provided with a chip collection groove (51) relative to the left side of the filter element (6).

8. The oil tank filter structure for a steam engine according to claim 1, characterized in that: The bottom surface of the metal frame (5) is provided with a positioning groove (52), and the bottom inner wall of the turbine oil tank body (3) is fixed with a positioning block (32) corresponding to the positioning groove (52).

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