Temporary filter screen for oil flushing of steam turbine

Abstract

The utility model discloses a steam turbine oil flushing temporary filter screen which comprises an outer cylinder, first wall holes are dug in the surface of the outer cylinder, the two sides of the outer cylinder are connected with sealing covers through connecting mechanisms, stainless steel filter cloth is arranged on the inner wall of the outer cylinder, an inner cylinder is arranged on the inner wall of the stainless steel filter cloth, second wall holes are dug in the surface of the inner cylinder, and the second wall holes are connected with the sealing covers through connecting mechanisms. An adjusting mechanism is arranged on one side of the sealing cover, stabilizer bars are symmetrically arranged on one side of the adjusting mechanism and make contact with the inner wall of the inner cylinder, the outer cylinder and the sealing cover are connected through a component in the connecting end in a threaded mode, then starting and adjusting are conducted through a component in the adjusting end, and the stabilizer bars are driven to conduct adjusting. The plurality of stabilizing rods are respectively attached to multiple sides of the inner wall of the inner cylinder, so that the inner cylinder, the stainless steel filter cloth and the outer cylinder are stably connected and are convenient to disassemble and assemble, and later cleaning of filtration is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of temporary filtering auxiliary equipment for steam turbine oil flushing, and specifically relates to a temporary filter screen for steam turbine oil flushing. Background Technique

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. High-temperature and high-pressure steam passes through a fixed nozzle to become an accelerated air flow and then jets onto the blades, causing the rotor equipped with the blade row to rotate and do work externally at the same time. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship power plants.

[0003] To ensure the long-term safe and stable operation of the steam turbine, it is necessary to regularly conduct Class A maintenance or bearing inspection on the steam turbine according to the requirements of the manufacturer. During each Class A maintenance or most bearing disassembly inspections of the steam turbine, in order to protect the steam turbine bearings and prevent impurities from entering the bearings during the lubricating oil circulation before the steam turbine starts, a temporary flushing filter screen is generally added to the bearing inlet pipeline. It is not convenient to disassemble and assemble between the temporary flushing filter screen and the inner and outer cylinders, resulting in inconvenient cleaning during the later stage of filtration.

[0004] In view of this, a temporary filter screen for steam turbine oil flushing is provided to overcome the above defects. Content of the Utility Model

[0005] In view of the problems in the related art, the utility model proposes a temporary filter screen for steam turbine oil flushing to overcome the above technical problems existing in the existing related art.

[0006] Therefore, the specific technical solution adopted by the utility model is as follows:

[0007] A temporary filter screen for steam turbine oil flushing includes an outer cylinder. First wall holes are dug on the surface of the outer cylinder. Sealing covers are connected to both sides of the outer cylinder through a connection mechanism. A stainless steel filter cloth is arranged on the inner wall of the outer cylinder. An inner cylinder is arranged on the inner wall of the stainless steel filter cloth. Second wall holes are dug on the surface of the inner cylinder. An adjustment mechanism is arranged on one side of the sealing cover. Stabilizing rods are symmetrically arranged on one side of the adjustment mechanism, and the stabilizing rods are in contact with the inner wall of the inner cylinder.

[0008] Preferably, a liquid inlet pipe is arranged on the right side of the top surface of the upper sealing cover, and the liquid inlet pipe extends to the bottom of the sealing cover.

[0009] Preferably, the connection mechanism includes a connection block, a first thread, a connection groove, and a second thread. The connection block is fixedly arranged on one side of the sealing cover. The first thread is arranged on the surface of the connection block. The connection grooves are symmetrically dug on the upper and lower sides of the outer cylinder. The second thread is equidistantly arranged in the connection grooves.

[0010] Preferably, the connecting block is arranged in the connecting groove, and the first thread is threadedly connected with the second thread.

[0011] Preferably, the adjusting mechanism includes an adjusting groove, a bidirectional adjusting screw rod and an adjusting block. The adjusting groove is dug in the middle of one side of the sealing cover. A bidirectional adjusting screw rod is arranged on the right side of the inner cavity of the adjusting groove. The outer wall of the bidirectional adjusting screw rod is threadedly connected with an adjusting block, and the connection between the adjusting block and the stabilizing rod is fixedly connected.

[0012] Preferably, the left side of the bidirectional adjusting screw rod penetrates through the left side of the inner cavity of the adjusting groove and extends to the left side of the sealing cover, and a knob cap is sleeved on the left side of the bidirectional adjusting screw rod.

[0013] The present utility model has the following beneficial effects:

[0014] Compared with the prior art, for the temporary filter screen for steam turbine oil flushing, through the combination of multiple mechanisms such as the connecting mechanism and the adjusting mechanism to form a new structure. First, the outer cylinder and the sealing cover are connected through the components in the connecting end and are threadedly connected. Then, the components in the adjusting end are started and adjusted, driving the adjustment of multiple stabilizing rods. The multiple stabilizing rods respectively fit on multiple sides of the inner wall of the inner cylinder, making the connection between the inner cylinder, the stainless steel filter cloth and the outer cylinder stable, and making it convenient to disassemble and assemble the inner cylinder, the stainless steel filter cloth and the outer cylinder, facilitating the cleaning in the later stage of filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 is a front view structural schematic diagram of a temporary filter screen for steam turbine oil flushing according to an embodiment of the present utility model;

[0017] Figure 2 is a disassembled structural schematic diagram of a temporary filter screen for steam turbine oil flushing according to an embodiment of the present utility model;

[0018] Figure 3 is a structural schematic diagram between the outer cylinder, the stainless steel filter screen and the inner cylinder of a temporary filter screen for steam turbine oil flushing according to an embodiment of the present utility model;

[0019] Figure 4 is a disassembled structural schematic diagram of the sealing cover and a part of the connecting mechanism of a temporary filter screen for steam turbine oil flushing according to an embodiment of the present utility model.

[0020] In the figure:

[0021] 1. Outer cylinder; 2. First wall hole; 3. Connecting mechanism; 4. Sealing cover; 5. Stainless steel filter cloth; 6. Inner cylinder; 7. Second wall hole; 8. Adjusting mechanism; 9. Stabilizing rod; 10. Liquid inlet pipe; 11. Connecting block; 12. First thread; 13. Connecting groove; 14. Second thread; 15. Adjusting groove; 16. Bi-directional adjusting screw rod; 17. Adjusting block; 18. Button cap. Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0023] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element 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 utility model.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] Embodiment

[0026] As Figure 1As shown in FIG. 4, a temporary filter for steam turbine oil flushing according to an embodiment of the present invention includes an outer cylinder 1. First wall holes 2 are dug on the surface of the outer cylinder 1. Sealing covers 4 are connected to both sides of the outer cylinder 1 through a connection mechanism 3. A stainless steel filter cloth 5 is arranged on the inner wall of the outer cylinder 1. An inner cylinder 6 is arranged on the inner wall of the stainless steel filter cloth 5. Second wall holes 7 are dug on the surface of the inner cylinder 6. An adjustment mechanism 8 is arranged on one side of the sealing cover 4. Stabilizing rods 9 are symmetrically arranged on one side of the adjustment mechanism 8, and the stabilizing rods 9 are in contact with the inner wall of the inner cylinder 6. A liquid inlet pipe 10 is arranged on the right side of the top surface of the sealing cover 4 located above, and the liquid inlet pipe 10 extends to the bottom of the sealing cover 4. The outer cylinder and the sealing cover 4 are connected by components in the connection mechanism 3 and are connected by threads. Then, the components in the adjustment mechanism 8 are started and adjusted, driving the adjustment of the multiple stabilizing rods 9. The multiple stabilizing rods 9 are respectively attached to multiple sides of the inner wall of the inner cylinder 6, making the connection between the inner cylinder 6, the stainless steel filter cloth 5 and the outer cylinder 1 stable, and making it convenient to disassemble and assemble the inner cylinder 6, the stainless steel filter cloth 5 and the outer cylinder 1, facilitating cleaning in the later stage of filtration.

[0027] The operation method is as follows: First, the stainless steel filter cloth 5 is sleeved and wrapped outside the inner cylinder 6. Secondly, the inner cylinder 6 is inserted into the outer cylinder 1. From the outside to the inside, they are the outer cylinder 1, the stainless steel filter cloth 5 and the inner cylinder 6. Lubricating oil enters the opening of the inner cylinder 6 through the liquid inlet pipe 10. The lubricating oil entering the inner cylinder 6 sequentially passes through the second wall holes 7 of the inner cylinder 6 and the stainless steel filter cloth 5, and finally flows out through the first wall holes 2 on the surface of the outer cylinder 1. During the flow of the lubricating oil, impurities are filtered.

[0028] The connection mechanism 3 includes a connection block 11, a first thread 12, a connection groove 13 and a second thread 14. The connection block 11 is fixedly arranged on one side of the sealing cover 4. The first thread 12 is arranged on the surface of the connection block 11. The connection grooves 13 are symmetrically dug on the upper and lower sides of the outer cylinder 1. The second thread 14 is equidistantly arranged in the connection grooves 13. The connection block 11 is arranged in the connection groove 13, and the first thread 12 and the second thread 14 are connected by threads; the sealing covers 4 are arranged on the upper and lower sides of the outer cylinder 1, and the components thereon, namely the connection block 11, are fixedly connected in the connection groove 13 through thread connection, that is, through the thread connection between the first thread 12 and the second thread 14, the sealing cover 4 and its upper components are fixed on the upper and lower sides of the outer cylinder 1.

[0029] The adjusting mechanism 8 includes an adjusting groove 15, a bidirectional adjusting screw rod 16 and an adjusting block 17. The adjusting groove 15 is dug in the middle of one side of the sealing cover 4. A bidirectional adjusting screw rod 16 is arranged on the right side of the inner cavity of the adjusting groove 15. The outer wall of the bidirectional adjusting screw rod 16 is threadedly connected with an adjusting block 17, and the connection part of the adjusting block 17 and the stabilizing rod 9 is fixedly connected. The left side of the bidirectional adjusting screw rod 16 penetrates through the left side of the inner cavity of the adjusting groove 15 and extends to the left side of the sealing cover 4, and a knob cap 18 is sleeved on the left side of the bidirectional adjusting screw rod 16. By turning the bidirectional adjusting screw rod 16 with the knob cap 18, the outer wall of the bidirectional adjusting screw rod 16 drives a plurality of adjusting blocks 17 to adjust in the opposite direction through reverse threads, and the stabilizing rod 9 fixedly connected to one side of the adjusting block 17 is driven and attached to one side of the inner wall of the inner cylinder 6, so that the connection among the inner cylinder 6, the stainless steel filter cloth 5 and the outer cylinder 1 is stable.

[0030] In summary, by means of the above technical solution of the present invention, when this device is in use, first, the sealing covers 4 are arranged on the upper and lower sides of the outer cylinder 1, and the components thereon, namely the connecting blocks 11, are fixedly connected in the connecting grooves 13 through threaded connections, that is, through the threaded connection between the first thread 12 and the second thread 14, the sealing covers 4 and the components on their upper ends are fixed on the upper and lower sides of the outer cylinder 1. Then, the bidirectional adjusting screw rod 16 is turned by the knob cap 18. The outer wall of the bidirectional adjusting screw rod 16 drives a plurality of adjusting blocks 17 to adjust in the opposite direction through reverse threads, and the stabilizing rod 9 fixedly connected to one side of the adjusting block 17 is driven and attached to one side of the inner wall of the inner cylinder 6, so that the connection among the inner cylinder 6, the stainless steel filter cloth 5 and the outer cylinder 1 is stable.

[0031] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A temporary filter for steam turbine oil flushing, characterized in that, It includes an outer cylinder (1). First wall holes (2) are dug on the surface of the outer cylinder (1). Sealing covers (4) are connected to both sides of the outer cylinder (1) through connecting mechanisms (3). A stainless steel filter cloth (5) is arranged on the inner wall of the outer cylinder (1). An inner cylinder (6) is arranged on the inner wall of the stainless steel filter cloth (5). Second wall holes (7) are dug on the surface of the inner cylinder (6). An adjusting mechanism (8) is arranged on one side of the sealing cover (4). Stabilizing rods (9) are symmetrically arranged on one side of the adjusting mechanism (8), and the stabilizing rods (9) are in contact with the inner wall of the inner cylinder (6).

2. The temporary filter for steam turbine oil flushing according to claim 1, wherein A liquid inlet pipe (10) is arranged on the right side of the top surface of the sealing cover (4) located above, and the liquid inlet pipe (10) extends to the bottom of the sealing cover (4).

3. A temporary filter for steam turbine oil flushing according to claim 2, characterized in that, The connecting mechanism (3) includes a connecting block (11), a first thread (12), a connecting groove (13) and a second thread (14). The connecting block (11) is fixedly arranged on one side of the sealing cover (4). The first thread (12) is arranged on the surface of the connecting block (11). The connecting grooves (13) are symmetrically dug on the upper and lower sides of the outer cylinder (1). The second threads (14) are equidistantly arranged in the connecting grooves (13).

4. The temporary filter for steam turbine oil flushing according to claim 3, wherein The connecting block (11) is arranged in the connecting groove (13), and the first thread (12) and the second thread (14) are threadedly connected.

5. A temporary filter for steam turbine oil flushing according to claim 4, characterized in that, The adjusting mechanism (8) includes an adjusting groove (15), a bidirectional adjusting screw rod (16) and an adjusting block (17). The adjusting groove (15) is dug in the middle of one side of the sealing cover (4). The bidirectional adjusting screw rod (16) is arranged on the right side of the inner cavity of the adjusting groove (15). The adjusting block (17) is threadedly connected to the outer wall of the bidirectional adjusting screw rod (16), and the connection between the adjusting block (17) and the stabilizing rod (9) is fixedly connected.

6. The temporary filter for steam turbine oil flushing according to claim 5, characterized in that, The left side of the bidirectional adjusting screw rod (16) penetrates through the left side of the inner cavity of the adjusting groove (15) and extends to the left side of the sealing cover (4), and a knob cap (18) is sleeved on the left side of the bidirectional adjusting screw rod (16).

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