Hydropower station unit oil mist treatment device

Abstract

The utility model relates to an oil mist treatment device for a hydropower station unit. The oil mist treatment device comprises a sealing box body, a first sealing strip and a second sealing strip, the side part of the sealing box body is provided with a side plate, and the sealing box body is spliced with the side plate through a bolt. The first sealing strip and the second sealing strip are detachably connected with the side portion of the sealing box body through the first fixing bolt and the second fixing bolt respectively, a double-layer structure is adopted, and the sealing effect between the sealing box and the thrust block is ensured. The second sealing strip comprises a sealing strip layer and an air bag type telescopic layer, and the telescopic layer is adjusted through an inflation and deflation opening. An oil leakage hole is formed in the side portion of the sealing box body, so that oil can flow back into the oil groove. Oil mist leakage is effectively prevented, the safety and reliability of unit operation are improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of sealing devices for hydropower stations, in particular to an oil mist treatment device for a unit in a hydropower station. Background Art

[0002] With growing electricity demand and technological advancements, large hydroelectric generators are increasingly being used. These units must not only operate efficiently and stably, but also ensure safety and environmental friendliness during operation. Large-capacity, high-speed hydroelectric generators place heavy loads on rotating components during operation, increasing friction, which in turn causes oil temperature to rise and oil volume to expand, generating large amounts of oil mist. This increase in oil mist not only increases the pressure inside the oil tank, exceeding the allowable volume of the oil mist area, but also causes oil and oil mist to escape through gaps in the oil tank cover, pipe joints, and breathing ports, where seals are poorly sealed. Furthermore, strong winds generated during unit operation can further exacerbate oil mist leakage.

[0003] The leakage of oil mist not only wastes lubricating oil resources and increases operating costs, but also pollutes the environment. More importantly, the presence of oil mist increases the risk of fire and poses a threat to the safety of power plants. Therefore, how to effectively control and treat oil mist has become an urgent problem. Although there are some devices on the market to reduce or prevent oil mist leakage, such as simple mechanical seals and labyrinth seals, these methods are often not effective when dealing with large-capacity and high-speed units. Mechanical seals are prone to failure due to wear, and although labyrinth seals can slow the leakage of oil mist to a certain extent, their sealing effect is limited under high pressure and large amounts of oil mist. In addition, most existing solutions do not take into account the issue of oil mist recovery and reuse, resulting in a waste of resources. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide an oil mist treatment device for a hydropower station unit, which can adopt a new sealing structure to achieve good sealing of the oil mist in the derivation oil tank, effectively eliminating the safety hazards brought about by the operation of the unit, greatly reducing the safety risks of maintenance operations, and improving maintenance efficiency and safety.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A hydropower station unit oil mist treatment device includes a sealing box body, a first sealing strip and a second sealing strip. The side of the sealing box body is provided with a side plate, and the sealing box body and the side plate are spliced ​​with each other by bolts. The side of the sealing box body is provided with a first sealing strip and a second sealing strip. The sealing box body is sealed and connected to the thrust head through the first sealing strip and the second sealing strip.

[0007] In a preferred solution, the first sealing strip is detachably connected to the side of the sealing box body via a first fixing bolt, and the first sealing strip adopts an upper and lower double-layer connection structure.

[0008] In a preferred solution, the upper end surface of the second sealing strip is detachably connected to the side of the sealing box body via a second fixing bolt, and the second sealing strip also adopts a double-layer connection structure.

[0009] In a preferred embodiment, the second sealing strip includes a sealing strip layer and a telescopic layer. The telescopic layer is arranged between the sealing strip layers. The telescopic layer is an airbag structure. A sunken air charging and discharging port is provided on the side of the second sealing strip. An air valve is provided in the air charging and discharging port and is connected to the telescopic layer.

[0010] In a preferred solution, an oil leakage hole is opened on the side of the sealing box body, and the oil leakage hole is connected to the sealing box body and the oil tank below.

[0011] An oil mist treatment device for a hydropower station unit has the following advantages:

[0012] 1. The utility model greatly improves the sealing effect by arranging the first sealing strip and the second sealing strip on the side of the sealing box body and adopting a double-layer structure. In particular, the airbag-type telescopic layer of the second sealing strip can adjust its thickness according to the actual working conditions, ensuring that good sealing performance can be maintained under different working conditions and effectively preventing the leakage of oil mist.

[0013] 2. The sealing design of this utility model can effectively eliminate the potential safety hazards brought by the operation of the unit and avoid fires and other safety accidents caused by oil mist leakage. At the same time, the side of the sealing box body is provided with an oil leakage hole, so that the oil can flow back to the oil tank in time, preventing oil accumulation, and further improving the safety and reliability of the system.

[0014] 3. Both the first sealing strip and the second sealing strip are detachable, which is convenient for installation and replacement. Especially after long-term operation, the sealing strip may be worn or aged. The sealing performance can be restored by simple disassembly and replacement, which greatly reduces maintenance costs and difficulty of overhaul. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic top view of the overall structure of the utility model;

[0017] Figure 2 This is a bottom view schematic diagram of the overall structure of the utility model;

[0018] Figure 3 It is an enlarged schematic diagram of the structural plane of the second sealing strip of the utility model.

[0019] In the figure: sealing box body 1, side plate 2, first sealing strip 3, first fixing bolt 4, second sealing strip 5, sealing strip layer 501, telescopic layer 502, charging and discharging port 503, oil leakage hole 6, second fixing bolt 7. DETAILED DESCRIPTION

[0020] like Figure 1 and Figure 2 As shown, an oil mist treatment device for a hydropower station unit includes a sealing box body 1, a first sealing strip 3 and a second sealing strip 5. A side plate 2 is provided on the side of the sealing box body 1, and the sealing box body 1 and the side plate 2 are spliced ​​with each other by bolts. A first sealing strip 3 and a second sealing strip 5 are installed on the side of the sealing box body 1, and the sealing box body 1 is sealedly connected to the thrust head through the first sealing strip 3 and the second sealing strip 5; one side of the sealing box body 1 is connected to the oil tank cover plate, and the first sealing strip 3 and the second sealing strip 5 can achieve a contact seal between the oil tank cover plate and the thrust head, that is, a gapless seal, to prevent overflow from the oil tank.

[0021] The preferred solution is Figure 2 As shown, the first sealing strip 3 is detachably connected to the side of the sealing box body 1 by a first fixing bolt 4, and the first sealing strip 3 adopts an upper and lower double-layer connection structure; the first sealing strip 3 is made of wool felt, which has good sealing and corrosion resistance. The double-layer structure of the first sealing strip 3 can effectively improve the overall sealing of the device.

[0022] The preferred solution is Figure 3 As shown, the upper end surface of the second sealing strip 5 is detachably connected to the side of the sealing box body 1 by a second fixing bolt 7, and the second sealing strip 5 also adopts a double-layer connection structure; the second sealing strip 5 is made of tetrafluoroethylene material, which has good sealing and corrosion resistance. The second sealing strip 5 can further improve the overall sealing of the device by adopting a double-layer structure.

[0023] The preferred solution is Figure 3 As shown, the second sealing strip 5 includes a sealing strip layer 501 and a telescopic layer 502. The telescopic layer 502 is arranged between the sealing strip layers 501 and has an airbag structure. A sunken air filling and discharging port 503 is provided on the side of the second sealing strip 5. The air filling and discharging port 503 is provided with an air valve and communicates with the telescopic layer 502.

[0024] During use, the device can inflate and deflate the telescopic layer 502 according to the thickness of the oil tank cover plate, thereby adjusting the overall thickness of the second sealing strip 5 and ensuring sufficient sealing contact between the second sealing strip 5 and the thrust head to achieve an optimal sealing state.

[0025] The preferred solution is Figure 1As shown, an oil leakage hole 6 is opened on the side of the sealing box body 1, and the oil leakage hole 6 connects the sealing box body 1 and the oil tank below. During the operation of the device, due to the increase in pressure in the lower oil tank, the oil mist will overflow into the interlayer inside the sealing box body 1. When the pressure in the lower oil tank decreases, the oil mist will condense into oil droplets and flow back into the oil tank through the oil leakage hole 6, which not only effectively prevents the leakage of oil mist, but also recovers oil through the oil leakage hole, realizing the recycling of resources.

[0026] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. An oil mist treatment device for a hydropower station unit, comprising a sealing box body (1), a first sealing strip (3) and a second sealing strip (5), characterized in that: A side plate (2) is provided on the side of the sealing box body (1); the sealing box body (1) and the side plate (2) are spliced ​​to each other by bolts; a first sealing strip (3) and a second sealing strip (5) are installed on the side of the sealing box body (1); the sealing box body (1) is sealedly connected to the thrust head via the first sealing strip (3) and the second sealing strip (5).

2. The oil mist treatment device for a hydropower station unit according to claim 1, characterized in that: The first sealing strip (3) is detachably connected to the side of the sealing box body (1) via a first fixing bolt (4), and the first sealing strip (3) adopts an upper and lower double-layer connection structure.

3. The oil mist treatment device for a hydropower station unit according to claim 1, characterized in that: The upper end surface of the second sealing strip (5) is detachably connected to the side of the sealing box body (1) via a second fixing bolt (7), and the second sealing strip (5) also adopts a double-layer connection structure.

4. The oil mist treatment device for a hydropower station unit according to claim 3, characterized in that: The second sealing strip (5) comprises a sealing strip layer (501) and a telescopic layer (502), wherein the telescopic layer (502) is arranged between the sealing strip layers (501), and the telescopic layer (502) is an airbag-type structure. A sunken air filling and discharging port (503) is provided on the side of the second sealing strip (5), and an air valve is provided in the air filling and discharging port (503) and is connected to the telescopic layer (502).

5. The oil mist treatment device for a hydropower station unit according to claim 3, characterized in that: An oil leakage hole (6) is provided on the side of the sealing box body (1), and the oil leakage hole (6) is connected to the sealing box body (1) and the oil tank below.

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