Oil level observation and cleaning device for substation equipment

Abstract

The present invention relates to the technical field of power equipment maintenance, and in particular to an oil level observation and pollution cleaning device for transformer substation equipment. The technical problem solved by the present invention is that pollutants generated during transformer operation reduce the insulating effect of insulating oil. The technical implementation scheme of the present invention is as follows: it comprises a transformer, an oil storage tank is fixedly connected to the transformer, the oil storage tank is filled with insulating oil, a pollution cleaning mechanism is installed on the oil storage tank, the pollution cleaning mechanism includes a mounting shell, and the mounting shell is threadedly fixed to the oil storage tank. The beneficial effect of the present invention is that by rotating the centrifugal unit, tiny pollutants that are corroded and peeled off are separated from the insulating oil, the Tesla valve impacts the flowing insulating oil through its own loop to generate convection, slowing down the flow of the insulating oil, and the insulating oil is squeezed out of the centrifugal unit slowly by centrifugal force, so that the insulating oil is separated from the pollutants, the insulating strength of the insulating oil is improved, and the working safety of the substation is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of power equipment maintenance, in particular to an oil level observation and pollution cleaning device for transformer substation equipment. Background Art

[0002] The transformer in a substation is one of the most important devices in the power system. Its main function is to increase or decrease the AC voltage to achieve efficient transmission and distribution of electrical energy. To prevent the transformer from overheating during operation, it is often cooled by wrapping the working equipment in an oil tank and filling it with insulating oil. Insulating oil is an electrical insulating medium that can effectively isolate the live parts of electrical equipment, preventing arc discharge and leakage, thereby ensuring the normal operation of electrical equipment and the safety of operators.

[0003] During the operation of the transformer, the insulating oil often flows in the cooling mechanism, causing some metal surface particles to be scraped off by the insulating oil. These particles dissolve in the insulating oil as solid pollutants, which deteriorates the insulation effect of the insulating oil. The conductive phenomenon of the insulating oil will electrolyze the insulating oil to produce gaseous pollutants, further deteriorating the insulation effect of the insulating oil and making it more likely for arcs to occur in the transformer. If the pollutants in the insulating oil are not cleaned in time, the insulating oil, as a flammable and explosive electrical insulating medium, can easily be ignited by the arc, causing an explosion in the substation and seriously threatening the lives of the workers. Summary of the Invention

[0004] In order to overcome the shortcoming that pollutants are generated during transformer operation and reduce the insulation effect of insulating oil, an oil level observation and cleaning device for transformer substation equipment is provided, which can automatically clean pollutants in insulating oil.

[0005] The technical solution of the present invention is: an oil level observation and cleaning device for substation equipment, comprising a transformer, an oil storage tank fixedly connected to the transformer, the oil storage tank filled with insulating oil, a cleaning mechanism installed on the oil storage tank, the cleaning mechanism comprising a mounting shell, the mounting shell being threadedly fixed to the oil storage tank, an L-shaped cylindrical shell fixedly connected to one end of the mounting shell, an air extraction unit installed at the side end of the L-shaped cylindrical shell, a centrifugal unit installed at the bottom end of the mounting shell, a clutch unit installed in the mounting shell, and a positioning unit installed on one side of the mounting shell;

[0006] The air extraction unit includes a first shell, the side end of the L-shaped cylindrical shell is fixedly connected to the first shell, the outer wall of the first shell is provided with an air outlet and an air inlet, the first shell is connected to the mounting shell through the air inlet, one end of the first shell is fixedly connected to the motor, the output shaft of the motor eccentrically passes through the first shell and is fixedly connected to the second rotating shaft, and the second rotating shaft is installed with a sealing assembly;

[0007] The centrifugal unit includes a rotating shell, the bottom of the outer side of the mounting shell is rotatably connected to the rotating shell, a plurality of U-shaped cavities are circumferentially distributed in the rotating shell, and a cone is fixed to the bottom of the rotating shell;

[0008] The positioning unit includes an L-shaped tube, which is fixedly connected to one side of the mounting shell. The bottom end of the L-shaped tube is circumferentially provided with liquid inlet holes. The outer wall of the L-shaped tube is slidably connected to a T-shaped sleeve, and the measuring unit is installed on the T-shaped sleeve.

[0009] Preferably, the sealing assembly includes a rotating column, which is rotatably connected to the second rotating shaft, and a plurality of sliding grooves are distributed circumferentially on the rotating column. A sliding plate is slidably connected in the sliding groove, and an elastic sealing plate is fixed to one end of the sliding plate. A compression spring is connected between the rotating column and the sliding plate.

[0010] Preferably, it further includes a first bevel gear and a first rotating shaft, one end of the second rotating shaft is fixedly connected to the first bevel gear, the first rotating shaft is rotatably connected to the mounting shell, one end of the first rotating shaft is fixedly connected to the second bevel gear, and the second bevel gear is meshed with the first bevel gear.

[0011] Preferably, the centrifugal unit also includes a one-way valve and a Tesla valve, which are fixedly connected to the U-shaped cavity of the rotating shell. Limited flow channels are opened in the Tesla valve in an arc shape and a straight line distribution, and liquid outlet holes are opened in the rotating shell in a circumferential distribution.

[0012] Preferably, the flow limiting channel consists of a curved passage and a straight passage, the straight passage is connected to a plurality of curved passages, and the curved passages are used to prevent the insulating oil from flowing into the liquid outlet.

[0013] Preferably, the centrifugal unit further includes a cover, a drain hole is provided on one side of the rotating shell, the drain hole is threadedly connected to the cover, liquid holes are provided between the several U-shaped cavities of the rotating shell, and the several U-shaped cavities of the rotating shell are interconnected through the liquid holes.

[0014] Preferably, the clutch unit includes a second shell, a second shell is rotatably connected to the top end of the mounting shell, a plum blossom column is rotatably connected inside the second shell, a number of first plum blossom gaskets are linearly distributed and snap-connected in a sliding manner on the plum blossom column, a number of second plum blossom gaskets are linearly distributed and snap-connected in a sliding manner inside the second shell, a number of second plum blossom gaskets are all sleeved on the outside of the plum blossom column, the first rotating shaft is fixedly connected to the plum blossom column, a number of first plum blossom gaskets and a number of second plum blossom gaskets are staggered, a pressure column is snap-connected and slidably connected to one end of the second shell, a third rotating shaft is fixed in the pressure column, the third rotating shaft is slidably connected to the rotating shell, and a control unit is arranged below the pressure column.

[0015] Preferably, the control unit includes a buoyancy plate, the outer wall of the third rotating shaft is fixedly connected to the buoyancy plate, and one end of the L-shaped tube is fixedly connected to the limiting flow ring.

[0016] Preferably, the measuring unit includes a straight sleeve and a rotating ring. The straight sleeve is fixedly connected to the T-shaped sleeve. A slide rod is slidably connected inside the straight sleeve. The rotating ring is rotatably connected inside the oil tank. A rotating frame is opened on one side of the rotating ring. The slide rod is rotatably connected to the rotating frame.

[0017] Preferably, the measuring unit further comprises a position indicating block, the position indicating block is fixedly connected to one side of the rotating ring, a rotating groove is provided on one side of the oil storage tank, and the position indicating block is slidably connected in the rotating groove.

[0018] The present invention has the following advantages: 1. The present invention separates the eroded and peeled tiny pollutants from the insulating oil into layers by rotating the centrifugal unit. The Tesla valve impacts the flowing insulating oil through its own loop to generate convection, slowing down the flow of the insulating oil. The insulating oil is squeezed out of the centrifugal unit slowly by centrifugal force, thereby separating the insulating oil from the pollutants, improving the insulation strength of the insulating oil, and ensuring the working safety of the substation.

[0019] 2. The current limiting ring of the present invention limits the maximum flow of the insulating oil input into the mounting shell, so that the mounting shell always maintains a low pressure state, thereby improving the extraction effect of the low-pressure environment on the waste gas dissolved in the insulating oil and improving the insulation strength of the insulating oil.

[0020] 3. The T-shaped sleeve of the present invention can block the liquid inlet hole as the liquid level of the insulating oil drops, thereby preventing the insulating oil from entering the mounting shell through the L-shaped tube, and preventing the gas in the oil storage tank from being extracted by the exhaust unit, causing the gas dissolved in the insulating oil to be released in the oil storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 A half-section schematic diagram of the oil storage tank of the present invention;

[0023] Figure 3 It is a partial cutaway schematic diagram of the cleaning mechanism of the present invention;

[0024] Figure 4 It is a partial cross-sectional schematic diagram of the air extraction unit of the present invention;

[0025] Figure 5 Schematic diagram of the three-dimensional structure of the clutch unit of the present invention;

[0026] Figure 6 It is a partial cross-sectional exploded schematic diagram of the clutch unit of the present invention;

[0027] Figure 7 It is a partial cutaway schematic diagram of the centrifugal unit of the present invention;

[0028] Figure 8 A partial cutaway schematic diagram of a positioning unit of the present invention;

[0029] Figure 9 It is a structural schematic diagram of the rotating rack of the present invention.

[0030] The meaning of the reference numerals in the figure: 1-transformer, 2-oil storage tank, 201-rotating groove, 3-cleaning mechanism, 4-mounting shell, 401-L-shaped cylindrical shell, 402-first bevel gear, 403-second bevel gear, 404-first rotating shaft, 5-exhaust unit, 501-first shell, 502-air outlet, 503-air inlet, 504-second rotating shaft, 505-rotating column, 506-sliding plate, 507-elastic sealing plate, 6-clutch unit, 601-second shell, 602-plum blossom column, 603-first plum blossom gasket, 604-second plum blossom Gasket, 605-pressure column, 606-third rotating shaft, 607-buoyancy plate, 608-flow limiting ring, 7-centrifugal unit, 701-rotating shell, 702-conical mouth, 703-one-way valve, 704-Tesla valve, 7041-flow limiting channel, 7042-liquid outlet, 705-drain hole, 706-sealing cover, 707-liquid hole, 8-positioning unit, 801-L-type tube, 802-liquid inlet, 803-T-type sleeve, 804-straight sleeve, 805-sliding rod, 806-rotating frame, 807-rotating ring, 808-positioning block, 9-motor. DETAILED DESCRIPTION

[0031] Reference herein to an embodiment means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present invention. The appearance of such a phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0032] Example 1

[0033] Oil level observation and cleaning devices for substation equipment, such as Figures 1-9 As shown, it includes a transformer 1, an oil storage tank 2 is fixedly connected to the transformer 1, the oil storage tank 2 is filled with insulating oil, a cleaning mechanism 3 is installed on the top of the oil storage tank 2, and the cleaning mechanism 3 includes a mounting shell 4, the mounting shell 4 is threadedly fixed to the oil storage tank 2, an L-shaped cylindrical shell 401 is fixedly connected to one end of the mounting shell 4, an exhaust unit 5 is installed on the side end of the L-shaped cylindrical shell 401, a centrifugal unit 7 is installed at the bottom end of the mounting shell 4, a clutch unit 6 is installed inside the mounting shell 4, and a positioning unit 8 is installed on one side of the mounting shell 4;

[0034] The air extraction unit 5 includes a first housing 501, which is fixedly connected to the side end of the L-shaped cylindrical shell 401. The outer wall of the first housing 501 is provided with an air outlet 502 and an air inlet 503. The first housing 501 is connected to the mounting shell 4 through the air inlet 503. The motor 9 is fixedly connected to one end of the first housing 501. The output shaft of the motor 9 eccentrically passes through the first housing 501 and is fixedly connected to a second rotating shaft 504. The second rotating shaft 504 is mounted with a sealing assembly.

[0035] The centrifugal unit 7 includes a rotating shell 701, which is rotatably connected to the bottom of the outer side of the mounting shell 4. The rotating shell 701 has eight U-shaped cavities distributed circumferentially. The bottom of the rotating shell 701 is fixed with a cone 702.

[0036] The positioning unit 8 includes an L-shaped tube 801, and the L-shaped tube 801 is fixedly connected to one side of the mounting shell 4. Liquid inlet holes 802 are circumferentially distributed at the bottom end of the L-shaped tube 801. A T-shaped sleeve 803 is slidably connected to the outer wall of the L-shaped tube 801. The density of the T-shaped sleeve 803 is less than that of insulating oil, and a measuring unit is installed on the T-shaped sleeve 803.

[0037] The sealing assembly includes a rotating column 505, which is rotatably connected to the second rotating shaft 504. Three sliding grooves are distributed circumferentially on the rotating column 505. Sliding plates 506 are slidably connected in the three sliding grooves. The sliding plates 506 are arc-shaped, and one end of the three sliding plates 506 is fixed with an elastic sealing plate 507. The three elastic sealing plates 507 are always in sealing contact with the inner wall of the first shell 501. Compression springs are connected between the rotating column 505 and the three sliding plates 506.

[0038] It also includes a first bevel gear 402 and a first rotating shaft 404. One end of the second rotating shaft 504 is fixedly connected to the first bevel gear 402. The first rotating shaft 404 is rotatably connected to the mounting shell 4. One end of the first rotating shaft 404 is fixedly connected to the second bevel gear 403. The second bevel gear 403 is meshed with the first bevel gear 402.

[0039] The centrifugal unit 7 also includes a one-way valve 703 and a Tesla valve 704. The eight U-shaped cavities of the rotating shell 701 are fixedly connected to one end near the top with a one-way valve 703, and the other end is fixedly connected to a Tesla valve 704. Each Tesla valve 704 has a limited flow channel 7041 distributed in an arc shape and a straight line. The rotating shell 701 is circumferentially distributed with liquid outlet holes 7042 corresponding to and connected to the flow limiting channels 7041.

[0040] The flow limiting channel 7041 consists of a straight channel and several curved channels. The straight channel is connected to several curved channels. The liquid inlet of the curved channel is in the same direction as the straight channel, and the liquid outlet of the curved channel is in the opposite direction to the straight channel. The curved channel is used to prevent the insulating oil from flowing into the outlet hole 7042.

[0041] The centrifugal unit 7 also includes a cover 706. A drainage hole 705 is provided on one side of the rotating shell 701. The drainage hole 705 is threadedly connected to the cover 706. Liquid holes 707 are provided between the eight U-shaped cavities of the rotating shell 701, and the eight cavities are connected to each other through the liquid holes 707.

[0042] The clutch unit 6 includes a second shell 601, the top of the mounting shell 4 is rotatably connected to the second shell 601, the second shell 601 is rotatably connected to the plum blossom column 602, the inner side of the plum blossom column 602 is fixed to the first rotating shaft 404, and the plum blossom column 602 is linearly distributed with a plurality of first plum blossom gaskets 603 connected in a card-type sliding manner. The second shell 601 is linearly distributed and slidably connected to a plurality of second plum blossom gaskets 604. The plurality of second plum blossom gaskets 604 are all sleeved on the outer side of the plum blossom column 602. The first plum blossom gasket The end faces of the plum blossom gasket 603 and the second plum blossom gasket 604 are relatively rough. Several first plum blossom gaskets 603 and several second plum blossom gaskets 604 are in staggered contact, which is used to increase the friction area between the first plum blossom gasket 603 and the second plum blossom gasket 604 to improve the load performance. A pressure column 605 is connected to the second shell 601 in a snap-fit ​​sliding manner at one end, and a third rotating shaft 606 is fixed in the pressure column 605. The third rotating shaft 606 is slidably connected to the rotating shell 701, and a control unit is arranged below the pressure column 605.

[0043] The control unit includes a buoyancy plate 607 , and the outer wall of the third rotating shaft 606 is fixedly connected to the buoyancy plate 607 . The density of the buoyancy plate 607 is less than that of the insulating oil. One end of the L-shaped tube 801 is fixedly connected to a flow limiting ring 608 , and the flow limiting ring 608 is used to limit the maximum flow of the insulating oil flowing into the mounting shell 4 .

[0044] Initially, the oil storage tank 2 is filled with insulating oil, the motor 9 is started, the output shaft of the motor 9 rotates clockwise, and drives the rotating column 505 to rotate synchronously through the second rotating shaft 504, and the rotating column 505 rotates synchronously through the sliding plate 506, and the elastic sealing plate 507 rotates synchronously. The sliding plate 506 is pushed by the compression spring and always squeezes the elastic sealing plate 507 to fit tightly against the first shell 501, thereby forming a cavity between two adjacent sliding plates 506. When the end of the elastic sealing plate 507 away from the sliding plate 506 passes over the air inlet 503, the two sliding plates near the air inlet 503 The cavity formed between 506 is connected to the air inlet hole 503. As the sliding plate 506 rotates, the volume of the cavity connected to the air inlet hole 503 gradually increases, and the air pressure in the cavity decreases, causing the cavity to inhale air into the mounting shell 4 through the air inlet hole 503. The air pressure in the mounting shell 4 decreases, and the mounting shell 4 draws insulating oil into the oil storage tank 2 through the liquid inlet hole 802 on the L-shaped tube 801. The insulating oil flows along the L-shaped tube 801 and flows into the mounting shell 4 after passing through the flow limiting ring 608. The insulating oil continues to flow along the mounting shell 4 into the rotating shell 701 and contacts the one-way valve 703. At this time, the pressure of the insulating oil is not enough to open the one-way valve 703. 03, due to the low pressure in the mounting shell 4, the gaseous pollutants dissolved in the insulating oil are released into the mounting shell 4 faster. On the one hand, when the rotating column 505 continues to rotate, the elastic sealing plate 507 in the other cavity contacts the air inlet 503. The elastic sealing plate 507 can separate the two adjacent cavities at the air inlet 503, so that the other cavity remains sealed, preventing the gas inside the two cavities from communicating with each other and causing the pressure in the cavity to increase, thereby ensuring that the exhaust unit 5 has a good low-pressure suction effect; when the sliding plate 506 continues to rotate to the upper side of the first shell 501, the sliding plate 50 6 is squeezed by the first shell 501, and the sliding plate 506 slides into the sliding groove and compresses the compression spring. When the two sliding plates 506 constituting the cavity slide to the upper side of the first shell 501, the two sliding plates 506 contract, causing the cavity between the two sliding plates 506 to be compressed. The pressure in the cavity increases, and the sliding plates 506 continue to slide. The end of the elastic sealing plate 507 away from the sliding plate 506 passes over the air outlet 502, and then the cavity between the two sliding plates 506 is connected to the air outlet 502. The gas in the cavity is discharged to the outside through the air outlet 502, thereby achieving the discharge of gaseous pollutants;On the other hand, the rotation of the second rotating shaft 504 drives the first bevel gear 402 to rotate, and the rotation of the first bevel gear 402 drives the second bevel gear 403 to rotate, so that the second bevel gear 403 drives the plum blossom column 602 to rotate through the first rotating shaft 404, and the plum blossom column 602 drives the first plum blossom gasket 603 to rotate. At this time, the first plum blossom gasket 603 and the second plum blossom gasket 604 are only squeezed by gravity, and the friction force is small, which is not enough to make the first plum blossom gasket 603 drive the second plum blossom gasket 604 to rotate. When the insulating oil level in the mounting shell 4 rises and contacts the buoyancy plate 607, the buoyancy plate 607 moves upward under the buoyancy force, and the buoyancy plate 607 moves upward. 07 drives the pressure column 605 to move synchronously through the third rotating shaft 606, so that the pressure column 605 touches and squeezes the first plum blossom gasket 603 and the second plum blossom gasket 604. It is worth noting that the distance that the buoyancy plate 607 moves upward is not very large, and this distance will not cause the third rotating shaft 606 to separate from the buoyancy plate 607. After being squeezed by the pressure column 605, the first plum blossom gasket 603 and the second plum blossom gasket 604 will squeeze each other and increase the friction force, thereby maintaining relative stillness through the increased friction force. At this time, the rotation of the plum blossom column 602 can drive the second plum blossom gasket 604 to rotate synchronously through the first plum blossom gasket 603, and through the second plum blossom gasket 6 04 controls the second housing 601 to drive the pressure column 605 to rotate synchronously. When the pressure column 605 rotates, it drives the rotating housing 701 to rotate synchronously through the third rotating shaft 606. After the insulating oil passes through the mounting housing 4 and flows into the rotating housing 701, the insulating oil is squeezed under the action of the centrifugal force of the rotating housing 701 and passes through the one-way valve 703 and flows into the U-shaped cavity of the rotating housing 701. During the rotation of the rotating housing 701, the insulating oil undergoes centrifugal stratification in the U-shaped cavity of the rotating housing 701. Solid contaminants such as metal particles suspended in the insulating oil are thrown to the bottom of the U-shaped cavity of the rotating housing 701 by the centrifugal action because their own density is greater than that of the insulating oil. As insulating oil is continuously flung into the U-shaped cavity by rotating housing 701, when the U-shaped cavity is filled with insulating oil, the insulating oil enters flow-restricting channel 7041. Because the curved path of flow-restricting channel 7041 guides the insulating oil, the insulating oil in the curved path countercurrently impacts the insulating oil in the straight path, causing the insulating oil to slowly flow from flow-restricting channel 7041 toward liquid outlet 7042. This prevents contaminants in the U-shaped cavity of rotating housing 701 from being swept up by the insulating oil and flowing out of rotating housing 701 along with the insulating oil. After flowing out of liquid outlet 7042, the insulating oil flows out along the inclined surface of cone 702 and re-enters oil storage tank 2, achieving circulating and cleaning of the insulating oil.

[0045] When the transformer 1 needs to replace the insulating oil, the cleaning mechanism 3 can be removed during this period, and the cover 706 can be rotated to separate it from the drain hole 705, so that the solid pollutants in the rotating shell 701 flow with the insulating oil, flow from the U-shaped cavity of the rotating shell 701 through the liquid hole 707 to the drain hole 705 and are discharged outside the device, thereby realizing the discharge of the solid pollutants in the cleaning mechanism 3. After discharge, the cover 706 is reinstalled on the drain hole 705, and then the cleaning mechanism 3 is re-sealed and installed on the upper part of the oil storage tank 2, and insulating oil is injected into the transformer 1 through other devices to complete the replacement of the insulating oil.

[0046] Example 2

[0047] On the basis of Example 1, Figure 8 and Figure 9 As shown, the measuring unit includes a straight sleeve 804 and a rotating ring 807. The straight sleeve 804 is fixedly connected to the T-shaped sleeve 803. A slide rod 805 is slidably connected inside the straight sleeve 804. A rotating ring 807 is rotatably connected inside the oil tank 2. A rotating frame 806 is provided on the inner side of the rotating ring 807. The slide rod 805 is rotatably connected to the rotating frame 806. A position indicating block 808 is fixedly connected to one side of the rotating ring 807. A rotating groove 201 is provided on one side of the oil tank 2. The position indicating block 808 is slidably connected in the rotating groove 201.

[0048] Since the density of the T-sleeve 803 is less than that of the insulating oil, the T-sleeve 803 floats on the liquid surface of the insulating oil. When the liquid level of the insulating oil drops, the T-sleeve 803 drives the straight sleeve 804 to move downward synchronously. The movement of the straight sleeve 804 drives the sliding rod 805 to move synchronously. The sliding rod 805 drives the rotating ring 807 to rotate by pulling the rotating frame 806. The rotating ring 807 drives the indicating block 808 to move synchronously, so that the position of the indicating block 808 in the rotating groove 201 changes. The staff can judge the liquid level in the oil storage tank 2 by observing the position of the indicating block 808, thereby realizing the observation of the oil level of the substation equipment.

[0049] When the liquid level of the insulating oil in the oil storage tank 2 is too low, the T-shaped sleeve 803 drops along with the liquid level of the insulating oil, and the bottom of the T-shaped sleeve 803 covers the liquid inlet hole 802, so that the exhaust unit 5 cannot extract the insulating oil through the L-shaped tube 801. This ensures that when the liquid level of the insulating oil in the oil storage tank 2 is too low, the gas in the oil storage tank 2 will not be extracted by the exhaust unit 5, so that the air pressure in the oil storage tank 2 is stable, and the gas dissolved in the insulating oil is prevented from being released in the oil storage tank 2.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. An oil level observation and cleaning device for transformer substation equipment, comprising a transformer (1), an oil storage tank (2) fixedly connected to the transformer (1), the oil storage tank (2) containing insulating oil, and a cleaning mechanism (3) installed on the oil storage tank (2), wherein the device is characterized by: The cleaning mechanism (3) includes a mounting shell (4), the mounting shell (4) is fixedly connected to the oil storage tank (2) by a thread, an L-shaped cylindrical shell (401) is fixedly connected to one end of the mounting shell (4), an air extraction unit (5) is installed at the side end of the L-shaped cylindrical shell (401), a centrifugal unit (7) is installed at the bottom end of the mounting shell (4), a clutch unit (6) is installed in the mounting shell (4), and a positioning unit (8) is installed on one side of the mounting shell (4); The air extraction unit (5) comprises a first shell (501), the side end of the L-shaped cylindrical shell (401) is fixedly connected to the first shell (501), the outer wall of the first shell (501) is provided with an air outlet (502) and an air inlet (503), the first shell (501) is connected to the mounting shell (4) through the air inlet (503), one end of the first shell (501) is fixedly connected to a motor (9), the output shaft of the motor (9) eccentrically passes through the first shell (501) and is fixedly connected to a second rotating shaft (504), and a sealing assembly is installed on the second rotating shaft (504); The centrifugal unit (7) includes a rotating shell (701), the outer bottom of the mounting shell (4) is rotatably connected to the rotating shell (701), a plurality of U-shaped cavities are circumferentially distributed inside the rotating shell (701), and a conical opening (702) is fixed to the bottom of the rotating shell (701); The positioning unit (8) includes an L-shaped tube (801), one side of the mounting shell (4) is fixedly connected to the L-shaped tube (801), the bottom end of the L-shaped tube (801) is circumferentially distributed with liquid inlet holes (802), the outer wall of the L-shaped tube (801) is slidably connected to a T-shaped sleeve (803), and the measuring unit is installed on the T-shaped sleeve (803); The centrifugal unit (7) further comprises a one-way valve (703) and a Tesla valve (704). The one-way valve (703) and the Tesla valve (704) are fixedly connected in the U-shaped cavity of the rotating shell (701). The Tesla valve (704) has arc-shaped and linearly distributed limited flow channels (7041). The rotating shell (701) has circumferentially distributed liquid outlets (7042).

2. The oil level observation and cleaning device for substation equipment according to claim 1 is characterized by: The sealing assembly includes a rotating column (505), the rotating column (505) is rotatably connected to the second rotating shaft (504), a plurality of sliding grooves are circumferentially distributed on the rotating column (505), a sliding plate (506) is slidably connected in the sliding groove, one end of the sliding plate (506) is fixedly connected to an elastic sealing plate (507), and a compression spring is connected between the rotating column (505) and the sliding plate (506).

3. The oil level observation and cleaning device for substation equipment according to claim 2, characterized in that: It also includes a first bevel gear (402) and a first rotating shaft (404), one end of the second rotating shaft (504) is fixedly connected to the first bevel gear (402), the first rotating shaft (404) is rotatably connected to the mounting shell (4), one end of the first rotating shaft (404) is fixedly connected to the second bevel gear (403), and the second bevel gear (403) is meshed with the first bevel gear (402).

4. The oil level observation and cleaning device for substation equipment according to claim 3, characterized in that: The flow limiting channel (7041) is composed of a curved channel and a straight channel, wherein the straight channel is connected to a plurality of curved channels, and the curved channels are used to prevent the insulating oil from flowing into the liquid outlet hole (7042).

5. The oil level observation and cleaning device for substation equipment according to claim 4, characterized in that: The centrifugal unit (7) further includes a sealing cover (706), a drainage hole (705) is provided on one side of the rotating shell (701), the drainage hole (705) is threadedly connected to the sealing cover (706), and liquid holes (707) are provided between the plurality of U-shaped cavities of the rotating shell (701), and the plurality of U-shaped cavities of the rotating shell (701) are interconnected via the liquid holes (707).

6. The oil level observation and cleaning device for substation equipment according to claim 5, characterized in that: The clutch unit (6) includes a second shell (601), the top of the mounting shell (4) is rotatably connected to the second shell (601), the second shell (601) is rotatably connected to a plum blossom column (602), the plum blossom column (602) is linearly distributed and snap-fitted and slidably connected to a plurality of first plum blossom gaskets (603), the second shell (601) is linearly distributed and snap-fitted and slidably connected to a plurality of second plum blossom gaskets (604), and the plurality of second plum blossom gaskets (604) are all sleeved. Located outside the plum blossom column (602), the first rotating shaft (404) is fixedly connected to the plum blossom column (602), a plurality of first plum blossom gaskets (603) and a plurality of second plum blossom gaskets (604) are staggered, one end of the second shell (601) is connected to a pressure column (605) in a snap-fit ​​sliding manner, a third rotating shaft (606) is fixedly connected inside the pressure column (605), the third rotating shaft (606) is slidably connected to the rotating shell (701), and a control unit is provided below the pressure column (605).

7. The oil level observation and cleaning device for substation equipment according to claim 6, characterized in that: The control unit comprises a buoyancy plate (607), the outer wall of the third rotating shaft (606) is fixedly connected to the buoyancy plate (607), and one end of the L-shaped tube (801) is fixedly connected to the limiting flow ring (608).

8. The oil level observation and cleaning device for substation equipment according to claim 7, characterized in that: The measuring unit comprises a straight sleeve (804) and a rotating ring (807); the straight sleeve (804) is fixedly connected to the T-shaped sleeve (803); a slide rod (805) is slidably connected in the straight sleeve (804); the rotating ring (807) is rotatably connected in the oil storage tank (2); a rotating frame (806) is provided on one side of the rotating ring (807); and the slide rod (805) is rotatably connected to the rotating frame (806).

9. The oil level observation and cleaning device for substation equipment according to claim 8, characterized in that: The measuring unit further comprises a position indicating block (808), the position indicating block (808) being fixedly connected to one side of the rotating ring (807), a rotating groove (201) being provided on one side of the oil storage tank (2), and the position indicating block (808) being slidably connected in the rotating groove (201).

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