Oil level observation and decontamination device for transformer substation equipment

Abstract

The invention relates to the technical field of power equipment maintenance, in particular to an oil level observation and decontamination device of substation equipment. The invention solves the technical problem that the insulating effect of the insulating oil is reduced due to pollutants generated in the working process of the transformer. According to the technical scheme, the transformer cleaning device comprises a transformer, an oil storage tank is fixedly connected to the transformer, insulating oil is contained in the oil storage tank, a cleaning mechanism is installed on the oil storage tank, the cleaning mechanism comprises an installation shell, and the installation shell is fixedly connected to the oil storage tank in a threaded mode. The device has the beneficial effects that eroded and peeled tiny pollutants and the insulating oil are layered by rotating the centrifugal unit, the Tesla valve impacts the flowing insulating oil through a loop of the Tesla valve to generate convection, the flowing speed of the insulating oil is reduced, the insulating oil slowly flows out of the centrifugal unit through extrusion of centrifugal force, the insulating oil is separated from the pollutants, and the working efficiency is improved. The insulating strength of the insulating oil is improved and the working safety of a transformer substation is ensured.

Description

Technical Field

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

[0002] The transformer in the substation is one of the most important equipment in the power system. Its main function is to increase or decrease the AC voltage to achieve efficient transmission and distribution of electric energy. In order to prevent the transformer from overheating during operation, the transformer 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, prevent 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 are dissolved 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 electric arcs to occur in the transformer. If the pollutants in the insulating oil are not cleaned up in time, the insulating oil, as a flammable and explosive electrical insulating medium, can easily be ignited by the electric arc, causing an explosion in the substation, seriously threatening the lives of the staff. Summary of the invention

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

[0005] The technical solution of the present invention is: an oil level observation and pollution cleaning device for substation equipment, comprising a transformer, an oil storage tank fixedly connected to the transformer, insulating oil in the oil storage tank, a pollution cleaning mechanism installed on the oil storage tank, the pollution cleaning mechanism comprising a mounting shell, the mounting shell threadedly fixedly connected to the oil storage tank, an L-shaped cylindrical shell fixedly connected to one end of the mounting shell, a suction 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 at one side of the mounting shell; The air extraction unit comprises 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 a motor, the output shaft of the motor eccentrically penetrates the first shell and is fixedly connected to a second rotating shaft, and a sealing assembly is installed on the second rotating shaft; The centrifugal unit comprises 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 fixedly connected to the bottom of the rotating shell; The positioning unit includes an L-shaped tube, which is fixedly connected to one side of the mounting shell. The bottom 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 a measuring unit is installed on the T-shaped sleeve.

[0006] Preferably, the sealing assembly includes a rotating column, which is rotatably connected to the second rotating shaft, and a plurality of sliding grooves are circumferentially distributed on the rotating column. A sliding plate is slidably connected in the sliding groove, and an elastic sealing plate is fixedly connected to one end of the sliding plate. A compression spring is connected between the rotating column and the sliding plate.

[0007] Preferably, it also 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.

[0008] Preferably, the centrifugal unit also includes a one-way valve and a Tesla valve, which are fixedly connected in the U-shaped cavity of the rotating shell, and limited flow channels are arranged in arc and straight lines in the Tesla valve, and liquid outlet holes are arranged in a circumferential direction in the rotating shell.

[0009] Preferably, the flow limiting channel is composed 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 hole.

[0010] Preferably, the centrifugal unit further comprises a sealing cover, a drainage hole is provided on one side of the rotating shell, a sealing cover is threadedly connected to the drainage hole, 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.

[0011] 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 plurality of first plum blossom gaskets are linearly distributed and snap-connected in a sliding manner on the plum blossom column, a plurality of second plum blossom gaskets are linearly distributed and snap-connected in a sliding manner inside the second shell, the plurality 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 plurality of first plum blossom gaskets and a plurality of second plum blossom gaskets are alternately placed, a pressure column is snap-connected and slidably connected to one end of the second shell, a third rotating shaft is fixedly connected inside the pressure column, the third rotating shaft is slidably connected to the rotating shell, and a control unit is arranged below the pressure column.

[0012] Preferably, the control unit comprises a buoyancy plate, an 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 a limiting flow ring.

[0013] 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 storage tank. A rotating frame is opened on one side of the rotating ring. The slide rod is rotatably connected to the rotating frame.

[0014] 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.

[0015] The present invention has the following advantages: 1. The present invention separates the tiny pollutants that are corroded and peeled off from the insulating oil by rotating the centrifugal unit. The Tesla valve impacts the flowing insulating oil through its own loop to generate convection, thereby slowing down the flow of the insulating oil. 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 insulation strength of the insulating oil is improved, and the working safety of the substation is ensured.

[0016] 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, improves the effect of the low pressure environment on the extraction of waste gas dissolved in the insulating oil, and improves the insulation strength of the insulating oil.

[0017] 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

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A half-section schematic diagram of the oil storage tank of the present invention; Figure 3 It is a partial cutaway schematic diagram of the dirt cleaning mechanism of the present invention; Figure 4 It is a partial cutaway schematic diagram of the air extraction unit of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the clutch unit of the present invention; Figure 6 It is a partial cutaway exploded schematic diagram of the clutch unit of the present invention; Figure 7 It is a partial cutaway schematic diagram of the centrifugal unit of the present invention; Figure 8 It is a partial cutaway schematic diagram of the positioning unit of the present invention; Fig. 9 It is a schematic structural diagram of the rotating frame of the present invention.

[0019] 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-check valve, 704-Tesla valve, 7041-flow limiting channel, 7042-liquid outlet, 705-drain hole, 706-sealing cover, 707-liquid through 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-position indicating block, 9-motor. DETAILED DESCRIPTION

[0020] Reference to an embodiment herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] Example 1 Oil level observation and cleaning devices for substation equipment, such as Figure 1-Figure 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, a suction 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; The air extraction unit 5 includes 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 the motor 9, the output shaft of the motor 9 eccentrically penetrates the first shell 501 and is fixedly connected to the 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, eight U-shaped cavities are circumferentially distributed in the rotating shell 701, and a cone 702 is fixed to the bottom of the rotating shell 701; 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 the insulating oil, and a measuring unit is installed on the T-shaped sleeve 803.

[0022] The sealing assembly includes a rotating column 505, which is rotatably connected to the second rotating shaft 504. Three sliding grooves are circumferentially distributed 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 fixedly connected to 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.

[0023] 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.

[0024] 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 with a one-way valve 703 at one end near the top, and the other end is fixedly connected with a Tesla valve 704. Each Tesla valve 704 has a limited flow channel 7041 distributed in an arc shape and in a straight line. The rotating shell 701 is circumferentially distributed with liquid outlet holes 7042 corresponding to and connected to the limited flow channel 7041.

[0025] 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 liquid outlet hole 7042.

[0026] The centrifugal unit 7 also includes a cover 706 . A drain hole 705 is provided on one side of the rotating shell 701 . The drain hole 705 is threadedly connected with the cover 706 . Liquid holes 707 are provided between the eight U-shaped cavities of the rotating shell 701 , and the eight U-shaped cavities are interconnected through the liquid holes 707 .

[0027] 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 inner side of the plum blossom column 602 is fixedly connected 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, and the second shell 601 is linearly distributed with a plurality of second plum blossom gaskets 604 connected in a sliding manner, and the plurality of second plum blossom gaskets 604 are all sleeved on the outer side of the plum blossom column 602, and the first plum blossom gaskets 603 are linearly distributed with a card-type sliding manner. 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 slidably connected at one end of the second shell 601. A third rotating shaft 606 is fixedly connected to 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.

[0028] The control unit includes a buoyancy plate 607 , and the outer wall of the third rotating shaft 606 is fixedly connected with 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 with a limiting flow ring 608 , and the limiting flow ring 608 is used to limit the maximum flow of the insulating oil flowing into the mounting shell 4 .

[0029] In the initial state, 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, the rotating column 505 rotates through the sliding plate 506 to drive the elastic sealing plate 507 to rotate synchronously, and the sliding plate 506 is pushed by the compression spring, always squeezing the elastic sealing plate 507 close to the first shell 501, so that a cavity can be formed between two adjacent sliding plates 506, and 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 the two plates 506 is connected with the air inlet hole 503. As the sliding plate 506 rotates, the volume of the cavity connected with the air inlet hole 503 gradually increases, and the air pressure in the cavity decreases, so that the cavity inhales air into the mounting shell 4 through the air inlet hole 503, and the air pressure in the mounting shell 4 decreases. 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 into the rotating shell 701 along the mounting shell 4 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 air pressure in the installation shell 4, the gas pollutants dissolved in the insulating oil are released into the installation 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 hole 503. The elastic sealing plate 507 can separate the two adjacent cavities at the air inlet hole 503, so that the other cavity remains sealed, preventing the gas inside the two cavities from communicating with each other and causing the air pressure in the cavity to increase, thereby ensuring that the air extraction 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, the sliding plate 506 slides into the sliding groove and squeezes 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, and the pressure in the cavity increases. The sliding plate 506 continues to slide, and the end of the elastic sealing plate 507 away from the sliding plate 506 passes over the air outlet 502, so that the cavity between the two sliding plates 506 is connected to the air outlet 502, and the gas in the cavity is discharged to the outside through the air outlet 502, thereby realizing the discharge of gas 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, so as to keep relatively still 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 shell 601 to drive the pressure column 605 to rotate synchronously. When the pressure column 605 rotates, it drives the rotating shell 701 to rotate synchronously through the third rotating shaft 606. After the insulating oil passes through the mounting shell 4 and flows into the rotating shell 701, the insulating oil is squeezed and passes through the one-way valve 703 under the action of the centrifugal force of the rotating shell 701, and flows into the U-shaped cavity of the rotating shell 701. During the rotation of the rotating shell 701, the insulating oil undergoes centrifugal stratification in the U-shaped cavity of the rotating shell 701. Solid pollutants such as metal particles suspended in the insulating oil are thrown to the bottom of the U-shaped cavity of the rotating shell 701 by the centrifugal action because their own density is greater than that of the insulating oil. As the insulating oil is continuously thrown into the U-shaped cavity by the rotating shell 701, when the U-shaped cavity is filled with insulating oil, the insulating oil enters the flow limiting channel 7041. Since the curved passage of the flow limiting channel 7041 drains the insulating oil, the insulating oil in the curved passage convectively impacts the insulating oil in the straight passage, causing the insulating oil to slowly flow from the flow limiting channel 7041 to the liquid outlet 7042, preventing the pollutants in the U-shaped cavity of the rotating shell 701 from being rolled up by the insulating oil and flowing out of the rotating shell 701 along with the insulating oil. After the insulating oil flows out of the liquid outlet 7042, it flows out along the inclined surface of the cone 702 and flows back into the oil storage tank 2, realizing the circulation and cleaning of the insulating oil. ;

[0030] When the insulating oil of the transformer 1 needs to be replaced, the cleaning mechanism 3 can be removed 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.

[0031] Example 2 On the basis of Example 1, Figure 8 and Fig. 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 sliding rod 805 is slidably connected inside the straight sleeve 804. A rotating ring 807 is rotatably connected inside the oil storage tank 2. A rotating frame 806 is provided on the inner side of the rotating ring 807. The sliding 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 storage tank 2. The position indicating block 808 is slidably connected in the rotating groove 201.

[0032] 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.

[0033] 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, thereby ensuring 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.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. An oil level observation and cleaning device for 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 cleaning mechanism (3) comprises a mounting shell (4), the mounting shell (4) being fixedly connected to the oil storage tank (2) by threads, an L-shaped cylindrical shell (401) being fixedly connected to one end of the mounting shell (4), a suction unit (5) being installed at the side end of the L-shaped cylindrical shell (401), a centrifugal unit (7) being installed at the bottom end of the mounting shell (4), a clutch unit (6) being installed in the mounting shell (4), and a positioning unit (8) being installed at 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 hole (502) and an air inlet hole (503), the first shell (501) is connected to the mounting shell (4) through the air inlet hole (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) comprises 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 fixedly connected to the bottom of the rotating shell (701); The positioning unit (8) comprises an L-shaped tube (801), one side of the mounting shell (4) is connected and fixedly connected with the L-shaped tube (801), the bottom end of the L-shaped tube (801) is provided with liquid inlet holes (802) distributed in the circumferential direction, the outer wall of the L-shaped tube (801) is slidably connected with a T-shaped sleeve (803), and the measuring unit is mounted on the T-shaped sleeve (803).

2. The oil level observation and cleaning device for substation equipment according to claim 1 is characterized in that: The sealing assembly comprises a rotating column (505), the rotating column (505) being rotatably connected to the second rotating shaft (504), a plurality of sliding grooves being circumferentially arranged on the rotating column (505), a sliding plate (506) being slidably connected in the sliding groove, an elastic sealing plate (507) being fixedly connected to one end of the sliding plate (506), and a compression spring being 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 is 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 mounting shell (4) is rotatably connected to the first rotating shaft (404); 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).

4. The oil level observation and cleaning device for substation equipment according to claim 3 is characterized by: 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); limited flow channels (7041) are arranged in an arc shape and in a straight line in the Tesla valve (704); and liquid outlet holes (7042) are arranged in a circumferential direction in the rotating shell (701).

5. The oil level observation and cleaning device for substation equipment according to claim 4 is characterized in that: The flow limiting channel (7041) is composed of a curved channel and a straight channel, and 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).

6. The oil level observation and cleaning device for substation equipment according to claim 5 is characterized by: The centrifugal unit (7) further comprises 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); liquid through 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 through holes (707).

7. The oil level observation and cleaning device for substation equipment according to claim 6 is characterized by: The clutch unit (6) comprises a second housing (601), the top end of the mounting housing (4) is rotatably connected to the second housing (601), a plum blossom column (602) is rotatably connected inside the second housing (601), a plurality of first plum blossom washers (603) are linearly distributed and snap-fitted and slidably connected to the plum blossom column (602), a plurality of second plum blossom washers (604) are linearly distributed and snap-fitted and slidably connected to the second housing (601), and the plurality of second plum blossom washers (604) are sleeved 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 arranged in an alternating manner, a pressure column (605) is slidably connected to one end of the second shell (601), 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 arranged below the pressure column (605).

8. The oil level observation and cleaning device for substation equipment according to claim 7 is characterized by: 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).

9. The oil level observation and cleaning device for substation equipment according to claim 8, 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 sliding rod (805) is slidably connected inside the straight sleeve (804); the rotating ring (807) is rotatably connected inside the oil storage tank (2); a rotating frame (806) is provided on one side of the rotating ring (807); and the sliding rod (805) is rotatably connected to the rotating frame (806).

10. The oil level observation and cleaning device for substation equipment according to claim 9, 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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