Vacuum degassing and automatic oiling equipment for transformer

Abstract

The invention discloses vacuum degassing and automatic oiling equipment for a transformer, and relates to the technical field of transformer oiling. Comprising an oil injection device, the bottom of the oil injection device is provided with an anti-bubble suction part, and the anti-bubble suction part is used for preventing bubbles; a mistaken suction prevention part is mounted on the bubble prevention suction part; the mistaken suction prevention part is used for preventing transformer oil from being sucked mistakenly; a floating lifting adapter is mounted on the oil injection device; a film spacer is mounted on the floating lifting adapter; the film spacer is used for spacing new oil and old oil; the thin film spacer can be matched with the floating lifting adapter, so that new oil and old oil are isolated during oil change, mixing of the new oil and the old oil can be reduced, oil change quality is improved, and waste of the new oil is reduced; the problems that an existing transformer vacuum degassing automatic oiling device can only conduct small-amount oiling generally when a transformer does not stop working, and new and old oil isolation replacement oiling is not convenient to conduct are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer oil injection, and specifically to a transformer vacuum degassing and automatic oil injection device. Background Technique

[0002] In actual transformer operation and maintenance work, transformers need to be refueled regularly. The main reasons for regular refueling of transformers are that transformer oil will gradually age, deteriorate or decrease during use, and may be contaminated by the external environment, thus affecting its performance and quality. High-temperature, high-humidity or severely polluted environments will accelerate the aging process of the oil and shorten its service life. Because it involves high-voltage electrical appliances, its safety is particularly important. Currently, the existing transformer vacuum degassing and automatic oil injection devices can usually only inject a small amount of oil when the transformer is not stopped. Directly draining the old oil will cause a sudden increase in the transformer temperature, making it inconvenient to isolate and replace the old and new oils, and not facilitating a large amount of oil replacement. Transformer shutdown directly affects the continuity of power transformation work. At the same time, it is not convenient to carry out defoaming and anti-misabsorption oil injection, and the oil injection safety is not good, there are potential safety hazards, and it is not convenient to test the accuracy of the transformer cavity in real time. The accuracy of the transformer cavity will directly affect the oil level height and the heat dissipation control effect.

[0003] Therefore, we propose a transformer vacuum degassing and automatic oil injection device. Summary of the Invention

[0004] The purpose of the present invention is to provide a transformer vacuum degassing and automatic oil injection device to solve the problem that the existing transformer vacuum degassing and automatic oil injection devices can usually only inject a small amount of oil when the transformer is not stopped, and it is not convenient to isolate and replace the old and new oils as mentioned in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A transformer vacuum degassing and automatic oil injection device includes an oil injection device. An anti-foam suction member is installed at the bottom of the oil injection device, and the anti-foam suction member is used to prevent bubbles; an anti-misabsorption member is installed on the anti-foam suction member; the anti-misabsorption member is used to prevent the misabsorption of transformer oil; a floating lifting adapter is installed on the oil injection device; a film spacer is installed on the floating lifting adapter; the film spacer is used to separate the old and new oil; a facing member is installed on the floating lifting adapter; the facing member is used to detect deformation; an oil discharge detection member is installed on the oil injection device; the oil discharge detection member is used to detect the oil quality; the oil injection device includes: a transformer main body and an oil injection pipe, and the oil injection pipe is installed on the transformer main body; a valve is provided on the oil injection pipe; an oil injection pump is externally connected to the oil injection pipe.

[0006] Preferably, the oil injection device includes: a vacuum pipe and a warning light. The vacuum pipe is fixedly installed on the side of the oil injection pipe; the warning light is fixedly installed on the oil injection pipe; a vacuum pump is externally connected to the vacuum pipe.

[0007] Preferably, the anti-bubble suction component includes: an isolation blind tube, an overflow hole and a discharge probe, the isolation blind tube is fixedly installed at the bottom end of the oil filling tube; the isolation blind tube is located inside the transformer body; a circle of overflow holes is opened on the isolation blind tube; a circle of overflow holes is located on the top side of the transformer body; a discharge probe is fixedly sleeved on the inner side of the oil filling tube, and the discharge probe is located inside the isolation blind tube; the discharge probe is used to discharge transformer oil.

[0008] Preferably, the anti-mis-suction component includes: a stop ring, a support plate and a buoyancy stop ball, the stop ring is fixedly installed inside the discharge probe; the support plate is fixedly installed inside the discharge probe; the support plate is located below the stop ring; a circle of through holes is provided on the support plate; a buoyancy stop ball is provided on the support plate; the inner side of the stop ring is a slope structure; the support plate is located above the overflow hole.

[0009] Preferably, the floating lifting adapter comprises: a lifting frame, a limiting wheel and a voltage regulating tube, the lifting frame is located on the inner side of the transformer body; four limiting wheels are rotatably installed on the upper and lower sides of the lifting frame through wheel frames; a gap is provided between the four limiting wheels and the inner side of the transformer body; the lifting frame is a hollow structure; a voltage regulating tube is fixedly installed on the bottom of the lifting frame; the voltage regulating tube is fixedly installed on the transformer body, and the voltage regulating tube passes through the transformer body; a valve is provided at the end of the voltage regulating tube; the voltage regulating tube is used to adjust the counterweight of the lifting frame.

[0010] Preferably, the film spacer includes: an isolation insulating pad and an insertion hole, the isolation insulating pad is fixedly mounted on the lifting frame; three insertion holes are opened on the isolation insulating pad; the isolation insulating pad is used to reduce the mixing of new and old oil; the three insertion holes are respectively used to pass through the three coils in the transformer body; the isolation blind pipe passes through the isolation insulating pad.

[0011] Preferably, the veneer part includes: a veneer rubber ring and a detection tube, the veneer rubber ring is fixedly sleeved on the outside of the lifting frame; the outside of the veneer rubber ring elastically fits on the inside of the transformer body; the veneer rubber ring is inflated with air pressure; the upper tube of the veneer rubber ring is connected with a detection tube; the detection tube is fixedly installed on the top of the adjustable lifting frame through a bracket; the veneer rubber ring is made of rubber flexible insulating material; the veneer rubber ring is used to adapt and fit the inner wall of the transformer body; when the lifting frame is filled with oil, the gravity of the lifting frame inside the transformer body is greater than the buoyancy of the veneer rubber ring.

[0012] Preferably, the veneer member further includes: a flashlight, a piston, a sliding electrical contact ring, and an upper and lower spring. The flashlight is fixedly sleeved on the inner wall of the detection tube; a piston is slidably sleeved inside the detection tube; the piston is fixedly sleeved with a sliding electrical contact ring; the sliding electrical contact ring is attached to the flashlight, and the flashlight, the sliding electrical contact ring, and the warning light are connected in series to a power source; an upper and lower spring is fixedly installed on the piston, and the other end of the upper and lower spring is connected inside the flashlight.

[0013] Preferably, the oil discharge detection member includes: an oil discharge pipe and a discharge pipe. The oil discharge pipe is fixedly installed at the bottom of the transformer body; the discharge pipe is threadedly connected to the oil discharge pipe; a valve is provided on the oil discharge pipe.

[0014] Preferably, the oil discharge detection member further includes: a stop filter block, a pressure sensor, and a limit frame. The stop filter block is slidably installed inside the discharge pipe; a limit frame is fixedly sleeved inside the discharge pipe, and a circle of through holes is provided on the limit frame; a pressure sensor is fixedly installed on the limit frame; the end of the pressure sensor is attached to the stop filter block, and the stop filter block is provided with mesh holes; the pressure sensor is externally connected to a display; a spring is provided between the stop filter block and the limit frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The present invention adopts an anti-foam suction member to achieve defoaming and oil inlet, which can avoid damage to the transformer caused by bubbles, improve the safety of oil inlet, and the structural defoaming is direct and fast. The isolation blind tube can be used to isolate bubbles without affecting the oil inlet speed. Bubbles will cause the dielectric strength of the oil to decrease, thus affecting the insulation performance of the transformer. The anti-misabsorption member can avoid the problem of oil backflow and sudden increase in the temperature of the transformer body during oil change without shutting down. Even if backflow occurs, the liquid level in the transformer body can remain unchanged, which can further ensure the smooth progress of the oil change of this structure.

[0017] The film spacer can cooperate with the floating lifting adapter to isolate the new and old oil during the oil change operation, reduce the mixing of the new and old oil, improve the oil change quality, and reduce the waste of new oil. This structure can perform the oil change operation when the transformer body is operating normally for voltage transformation, avoiding affecting the continuity of voltage transformation of the transformer body and avoiding the traditional method of oil injection for transformers, which usually can only supplement a small amount of oil. If new oil is directly injected and the old oil is discharged, it will cause great waste of new oil and is not economical and environmentally friendly.

[0018] The use of veneering components can perform deformation detection on the inner wall of the transformer body, avoiding the failure to detect deformations on the inner wall of the transformer body. Deformations on the inner wall of the transformer body will directly affect the height of the internal oil level and also affect the heat dissipation effect of the oil. The use of oil drainage detection components can be used to drain the old oil, and at the same time, it is convenient for staff to understand the impurity content in the oil. If the old oil meets the standards, there is no need to replace it, which is more suitable for regular inspections. At the same time, isolating the impurities in the oil also helps in the pretreatment of the old oil. Brief Description of the Drawings

[0019] Figure 1 Figure 1 is a schematic diagram of the overall structure of an automatic oil injection device for transformer vacuum degassing according to the present invention;

[0020] Figure 2 Figure 2 is a cross-sectional view of the internal structure of an automatic oil injection device for transformer vacuum degassing according to the present invention;

[0021] Figure 3 Figure 3 is a schematic diagram of the structure of the oil injection device according to the present invention;

[0022] Figure 4 Figure 4 is a schematic diagram of the structure of the anti-foam suction component according to the present invention;

[0023] Figure 5 Figure 5 is a schematic diagram of the installation position of the discharge probe according to the present invention;

[0024] Figure 6 In the present invention Figure 2 Enlarged view of the structure of area B;

[0025] Figure 7 Figure 6 is a schematic diagram of the structure of the floating lifting adapter according to the present invention;

[0026] Figure 8 Figure 7 is a schematic diagram of the installation position of the veneering rubber ring according to the present invention;

[0027] Figure 9 Figure 8 is a schematic diagram of the structure of the veneering component according to the present invention;

[0028] Figure 10 In the present invention Figure 9 Enlarged view of the structure of area C;

[0029] Figure 11 In the present invention Figure 8 Enlarged view of the structure of area D.

[0030] In the figure: 1. Oil injection device; 101. Transformer main body; 102. Oil injection pipe; 103. Vacuum pipe; 104. Warning lamp; 2. Anti-foam suction part; 201. Isolation blind pipe; 2011. Overflow hole; 202. Discharge probe; 3. Anti-mis-suction part; 301. Stop ring; 302. Support plate; 303. Buoyancy stop ball; 4. Floating lifting adapter; 401. Lifting frame; 402. Limit wheel; 403. Pressure regulating pipe; 5. Film spacer; 501. Isolation insulating pad; 5011. Interpenetrating hole; 6. Laminating part; 601. Laminating rubber ring; 602. Detection pipe; 603. Electric torch; 604. Piston; 6041. Sliding electric contact ring; 605. Upper and lower springs; 7. Oil discharge detection part; 701. Oil discharge pipe; 702. Discharge pipe; 703. Stop filter block; 704. Pressure sensor; 7041. Limit frame. Detailed implementation mode

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] Embodiment 1: Please refer to Figures 1 to 11 as shown:

[0033] The present invention provides a technical solution: a transformer vacuum degassing and automatic oil injection device, including an oil injection device 1, an anti-foam suction part 2 is installed at the bottom of the oil injection device 1, and the anti-foam suction part 2 is used to prevent air bubbles; an anti-mis-suction part 3 is installed on the anti-foam suction part 2; the anti-mis-suction part 3 is used to prevent mis-suction of transformer oil; a floating lifting adapter 4 is installed on the oil injection device 1; a film spacer 5 is installed on the floating lifting adapter 4; the film spacer 5 is used to separate new and old oil; a laminating part 6 is installed on the floating lifting adapter 4; the laminating part 6 is used to detect deformation; an oil discharge detection part 7 is installed on the oil injection device 1; the oil discharge detection part 7 is used to detect the oil quality; the oil injection device 1 includes: a transformer main body 101 and an oil injection pipe 102, and the oil injection pipe 102 is installed on the transformer main body 101; a valve is provided on the oil injection pipe 102; the oil injection pipe 102 is externally connected to an oil injection pump.

[0034] Among them, the oil filling device 1 includes: a vacuum tube 103 and a warning light 104. The vacuum tube 103 is fixedly installed on the side of the oil injection pipe 102; the warning light 104 is fixedly installed on the oil injection pipe 102; the vacuum tube 103 is externally connected to a vacuum pump; the anti-foam suction member 2 includes: an isolation blind tube 201, an overflow hole 2011 and a discharge probe tube 202. The isolation blind tube 201 is fixedly installed at the bottom end of the oil injection pipe 102; the isolation blind tube 201 is located inside the transformer body 101; a circle of overflow holes 2011 is opened on the isolation blind tube 201; the circle of overflow holes 2011 is located on the top side inside the transformer body 101; the discharge probe tube 202 is fixedly sleeved inside the oil injection pipe 102, and the discharge probe tube 202 is located inside the isolation blind tube 201; the discharge probe tube 202 is used to discharge transformer oil. By using the anti-foam suction member 2, defoaming and oil inlet can be realized, damage to the transformer caused by bubbles can be avoided, the safety of oil inlet can be improved, the structure defoaming is direct and fast, the isolation blind tube 201 can be used to isolate bubbles, and at the same time, the oil inlet speed is not affected. Bubbles will cause the dielectric strength of the oil to decrease, thereby affecting the insulation performance of the transformer. When a large number of bubbles exist, the electric field distribution inside the oil will be changed, increasing the risk of partial discharge and possibly triggering more serious electrical faults. Avoid the traditional oil inlet method. Even if there is negative pressure, it is still easy to form bubbles on the oil surface, increasing potential hazards and restricting the oil inlet speed.

[0035] The anti-misaspiration component 3 includes: a stop ring 301, a support plate 302, and a buoyancy stop ball 303. The stop ring 301 is fixedly installed inside the discharge pipe 202; the support plate 302 is fixedly installed inside the discharge pipe 202; the support plate 302 is located below the stop ring 301; a circle of through holes is provided on the support plate 302; the buoyancy stop ball 303 is placed on the support plate 302; the inner side of the stop ring 301 is a bevel structure; the support plate 302 is located above the overflow hole 2011. By using the anti-misaspiration component 3 in cooperation with the anti-foam suction component 2, it can ensure one-way oil inlet and defoaming, avoid the influence of bubbles on the safety of the transformer. At the same time, by using the one-way discharge method of the anti-misaspiration component 3, it can avoid the oil liquid backflow caused by the deformation or leakage of the transformer main body 101 during the long-time air extraction and dehumidification usually required before oil change during vacuum suction. It can avoid the problem of oil liquid backflow and sudden increase in the temperature of the transformer main body 101 during oil change without shutting down the machine. This structure can avoid the problem of the instantaneous decrease in the oil level inside the transformer main body 101 caused by oil liquid backflow. Even if back suction occurs, the liquid level inside the transformer main body 101 can remain unchanged, which can further ensure the smooth progress of the oil change of this structure. Once backflow occurs, at this time, the liquid level in the discharge pipe 202 rises. At this time, the buoyancy stop ball 303 floats upward and can be hermetically attached to the stop ring 301 to limit the flow. At the same time, the oil liquid is isolated by the isolation blind pipe 201. Even if the buoyancy stop ball 303 does not seal instantaneously, it will only cause the oil level in the isolation blind pipe 201 to drop, and the liquid level of the transformer main body 101 remains unchanged. The oil liquid in the injection pipe 102 is discharged from the discharge pipe 202. At this time, the oil liquid that may contain bubbles will be discharged from the inside of the isolation blind pipe 201. Because the inside of the isolation blind pipe 201 is isolated from the transformer main body 101, the oil liquid inside the transformer main body 101 will not be mixed with the oil liquid in the isolation blind pipe 201. At this time, the bubbles in the isolation blind pipe 201 naturally float up and defoam, and the oil liquid overflows from the overflow hole 2011.

[0036] Among them, the floating lifting adapter 4 includes: a lifting frame 401, a limit wheel 402, and a pressure regulating pipe 403. The lifting frame 401 is located inside the transformer main body 101; four limit wheels 402 are rotatably installed on the upper and lower sides of the lifting frame 401 through wheel brackets respectively; there is a gap between the four limit wheels 402 and the inside of the transformer main body 101; the lifting frame 401 is a hollow structure; a pressure regulating pipe 403 is fixedly installed at the bottom of the lifting frame 401; the pressure regulating pipe 403 is fixedly installed on the transformer main body 101, and the pressure regulating pipe 403 passes through the transformer main body 101; a valve is provided at the end of the pressure regulating pipe 403; the pressure regulating pipe 403 is used to adjust the counterweight of the lifting frame 401; the film spacer 5 includes: an isolation insulating pad 501 and an insertion hole 5011. The isolation insulating pad 501 is fixedly installed on the lifting frame 401; three insertion holes 5011 are provided on the isolation insulating pad 501; the isolation insulating pad 501 is used to reduce the mixing of new and old oil; the three insertion holes 5011 are respectively used to pass through three coils inside the transformer main body 101; the isolation blind pipe 201 passes through the isolation insulating pad 501. By using the film spacer 5, it can cooperate with the floating lifting adapter 4 to isolate the new and old oil during the oil change operation, reduce the mixing of new and old oil, improve the oil change quality, reduce the waste of new oil, and can perform the oil change operation during the normal voltage transformation operation of the transformer main body 101, avoiding affecting the voltage transformation continuity of the transformer main body 101 and avoiding the traditional transformer oil injection operation. When the transformer main body 101 is running continuously, usually only a small amount of oil can be replenished. When it is necessary to change the oil without stopping the machine, usually the transformer main body 101 needs to be shut down. If the method of directly injecting new oil and discharging the old oil is used, a large amount of new and old oil will be mixed, and a large amount of new oil will be mixed and discharged with the old oil, resulting in a great waste of new oil and being uneconomical. Usually, when the oil needs to be changed, the transformer main body 101 needs to be shut down. This structure can achieve oil change without stopping the operation and can also ensure economy. This structure uses the floating lifting adapter 4 to control its height and can cooperate with the isolation insulating pad 501 for isolation. Especially for the old oil deposited under the transformer main body 101, during the oil change, the pressure regulating pipe 403 is connected to the oil pump for oil injection, and the lifting frame 401 is filled with oil through the oil. At this time, the gravity of the lifting frame 401 increases and it will sink. The oil injection work is carried out in real time through the injection pipe 102. At this time, as the isolation insulating pad 501 moves down, the new oil above the isolation insulating pad 501 can fill the transformer main body 101 in real time. During the process, the valve of the drain pipe 701 is opened in real time to discharge the old oil under the isolation insulating pad 501, realizing the isolation of new and old oil for oil change.

[0037] Among them, the veneer component 6 includes: a veneer rubber ring 601 and a detection tube 602. The veneer rubber ring 601 is fixedly sleeved on the outer side of the lifting frame 401. The outer side of the veneer rubber ring 601 is elastically attached to the inner side of the transformer main body 101. The inside of the veneer rubber ring 601 is filled with air pressure. A detection tube 602 is connected to the upper part of the veneer rubber ring 601. The detection tube 602 is fixedly installed on the top of the adjustable lifting frame 401 through a bracket. The veneer rubber ring 601 is made of rubber flexible insulating material. The veneer rubber ring 601 is used to adapt and fit the inner wall of the transformer main body 101. When the inside of the lifting frame 401 is filled with oil, the gravity of the lifting frame 401 inside the transformer main body 101 is greater than the buoyancy of the veneer rubber ring 601. The veneer component 6 further includes: a power connection tube 603, a piston 604, a sliding power connection ring 6041 and an upper and lower spring 605. The power connection tube 603 is fixedly sleeved on the inner wall of the detection tube 602. A piston 604 is slidably sleeved inside the detection tube 602. A sliding power connection ring 6041 is fixedly sleeved on the piston 604. The sliding power connection ring 6041 is attached to the power connection tube 603, and the power connection tube 603, the sliding power connection ring 6041 and the warning lamp 104 are connected in series to the power supply. An upper and lower spring 605 is fixedly installed on the piston 604, and the other end of the upper and lower spring 605 is connected inside the power connection tube 603. By using the veneer component 6, the deformation detection of the inner wall of the transformer main body 101 can be carried out, which can avoid the deformation of the inner wall of the transformer main body 101 not being detected. The deformation of the inner wall of the transformer main body 101 will directly affect the liquid level height of the internal oil, and at the same time will also affect the heat dissipation effect of the oil. This structure can use the veneer component 6 to comprehensively detect the inner wall of the transformer main body 101 to avoid omission. With the lubricity of the internal oil itself, it ensures the smooth lifting and moving. When the inner wall of the transformer shell deforms during oil injection, it may lead to problems such as a decrease in insulation performance, equipment damage and an increase in safety hazards. Once the inner wall of the transformer main body 101 is excessively concave and convex deformed, it can squeeze the veneer rubber ring 601, and the air pressure inside the veneer rubber ring 601 will change. Once the piston 604 moves too far, it will drive the sliding power connection ring 6041 to move and separate from the power connection tube 603, and the warning lamp 104 can give a warning.

[0038] Embodiment 2, on the basis of Embodiment 1, the oil discharge detection member 7 includes: an oil discharge pipe 701 and a discharge pipe 702. The oil discharge pipe 701 is fixedly installed at the bottom of the transformer body 101. The discharge pipe 702 is threadedly connected to the oil discharge pipe 701. A valve is provided on the oil discharge pipe 701. The oil discharge detection member 7 further includes: a stop filter block 703, a pressure sensor 704 and a limit frame 7041. The SBT732 type pressure sensor 704 can be used, and a supporting display is adopted. The stop filter block 703 is slidably installed inside the discharge pipe 702. A limit frame 7041 is fixedly sleeved inside the discharge pipe 702, and a circle of through holes is provided on the limit frame 7041. The pressure sensor 704 is fixedly installed on the limit frame 7041. The end of the pressure sensor 704 is attached to the stop filter block 703, and the stop filter block 703 is provided with mesh holes. The pressure sensor 704 is externally connected to a display. A spring is provided between the stop filter block 703 and the limit frame 7041. The oil discharge detection member 7 can be used to discharge old oil, and at the same time, it is convenient for the staff to understand the impurity content in the oil. If the old oil meets the standard, there is no need to replace it, which is more suitable for regular inspections. At the same time, the method of isolating the impurities in the oil also helps to pre-treat the old oil, improving the structural rationality. When the old oil meets the standard, only simple oil replenishment is required, which is convenient for the staff to check the impurity content.

[0039] Working principle of this embodiment: First, before oil injection, the main body of the transformer 101 is evacuated in advance. At this time, air is extracted through a vacuum pump connected to the vacuum tube 103. Once reflux occurs during the process, the liquid level in the discharge probe 202 rises. At this time, the buoyancy stop ball 303 floats upward, which can seal and fit the stop ring 301 to limit the flow. At the same time, the isolation blind tube 201 is used to isolate the oil. Even if the buoyancy stop ball 303 does not close instantly, only the oil level in the isolation blind tube 201 will drop, and the liquid level of the main body of the transformer 101 remains unchanged. After the air extraction is completed, oil replacement is required. When injecting oil by opening the valve on the oil injection pipe 102 and using the main oil pump connected to the oil injection pipe 102, the oil in the oil injection pipe 102 is discharged from the discharge probe 202. At this time, the oil with possible bubbles will be discharged from the inside of the isolation blind tube 201. Because the inside of the isolation blind tube 201 is isolated from the main body of the transformer 101, the oil inside the main body of the transformer 101 will not be mixed with the oil in the isolation blind tube 201. At this time, the bubbles in the isolation blind tube 201 will naturally float up and defoam, and the oil will overflow from the overflow hole 2011. At the same time, the valve on the drain pipe 701 is opened to discharge the old oil. During oil replacement, the oil pump is connected for oil injection through the pressure regulating pipe 403. The oil fills the lifting frame 401. At this time, the gravity of the lifting frame 401 increases and it will sink. During the sinking process of the lifting frame 401, oil injection work can be carried out in real time through the oil injection pipe 102. At this time, as the isolation insulating pad 501 moves downward, the new oil above the isolation insulating pad 501 can fill the main body of the transformer 101 in real time. During the process, the valve of the drain pipe 701 is opened in real time to discharge the old oil below the isolation insulating pad 501. The coil inside the main body of the transformer 101 can be isolated by passing through the insertion hole 5011, reducing the mixing of new and old oils. After the oil replacement is completed, the oil in the lifting frame 401 is discharged. Using the buoyancy of the internal cavity of the lifting frame 401, the lifting frame 401 can float up and reset again. When adjusting the lifting of the lifting frame 401, the surface rubber ring 601 will be squeezed by the inner wall of the main body of the transformer 101. Once the inner wall of the main body of the transformer 101 is deformed too much in concavity and convexity, the surface rubber ring 601 can be squeezed. The air pressure inside the surface rubber ring 601 will change, and the piston 604 can move inside the flashlight 603. Once the moving distance of the piston 604 is too large, it will drive the sliding electrical contact ring 6041 to move and separate from the flashlight 603, and the warning light 104 will turn off to indicate that the surface flatness does not meet the standard and maintenance is required. When draining oil through the drain pipe 701, a certain amount of old oil is drained first. If there are impurities in the old oil, the stop filter block 703 can be blocked, reducing the passability of the stop filter block 703. At this time, the extrusion force of the stop filter block 703 on the pressure sensor 704 increases, and the pressure data can be displayed through the display connected to the pressure sensor 704. On the contrary, if the impurity content is small during oil drainage, the new oil injection and old oil discharge can be stopped, and the old oil can continue to be used.

[0040] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transformer vacuum degassing automatic oil filling device, comprising an oil filling device (1), wherein an anti-bubble suction piece (2) is installed at the bottom of the oil filling device (1), characterized in that: The anti-bubble suction piece (2) is used to prevent bubbles; an anti-mistaken suction piece (3) is installed on the anti-bubble suction piece (2); the anti-mistaken suction piece (3) is used to prevent the transformer oil from being mistakenly sucked; The oil injection device (1) is provided with a floating lifting adapter (4); the floating lifting adapter (4) is provided with a film spacer (5); the film spacer (5) is used to separate new and old oils; The floating lifting adapter (4) is provided with a facing piece (6); the facing piece (6) is used to detect deformation; the oil injection device (1) is provided with an oil discharge detection piece (7); the oil discharge detection piece (7) is used to detect oil quality; The oil injection device (1) comprises: a transformer body (101) and an oil injection pipe (102); the transformer body (101) is provided with an oil injection pipe (102); the oil injection pipe (102) is provided with a valve; and the oil injection pipe (102) is externally connected to an oil injection pump.

2. The transformer vacuum degassing automatic oil filling equipment according to claim 1 is characterized by: The oil injection device (1) comprises: a vacuum tube (103) and a warning light (104); the vacuum tube (103) is fixedly mounted on the side of the oil injection tube (102); the warning light (104) is fixedly mounted on the oil injection tube (102); and the vacuum tube (103) is externally connected to a vacuum pump.

3. The transformer vacuum degassing automatic oil filling equipment according to claim 1 is characterized in that: The anti-bubble suction piece (2) comprises: an isolation blind tube (201), an overflow hole (2011) and a discharge probe (202); the isolation blind tube (201) is fixedly mounted at the bottom end of the oil filling tube (102); the isolation blind tube (201) is located inside the transformer body (101); a circle of overflow holes (2011) is provided on the isolation blind tube (201); the circle of overflow holes (2011) is located on the top side of the transformer body (101); the discharge probe (202) is fixedly sleeved on the inner side of the oil filling tube (102), and the discharge probe (202) is located inside the isolation blind tube (201); the discharge probe (202) is used to discharge transformer oil.

4. The transformer vacuum degassing automatic oil filling equipment according to claim 3 is characterized by: The anti-mis-suction component (3) comprises: a stop ring (301), a support plate (302) and a buoyancy stop ball (303); the stop ring (301) is fixedly installed inside the discharge probe (202); the support plate (302) is fixedly installed inside the discharge probe (202); the support plate (302) is located below the stop ring (301); a circle of through holes is provided on the support plate (302); a buoyancy stop ball (303) is provided on the support plate (302); the inner side of the stop ring (301) is a slope structure; and the support plate (302) is located above the overflow hole (2011).

5. The transformer vacuum degassing automatic oil filling equipment according to claim 3 is characterized by: The floating lifting adapter (4) comprises: a lifting frame (401), a limiting wheel (402) and a voltage regulating tube (403); the lifting frame (401) is located inside the transformer body (101); four limiting wheels (402) are rotatably mounted on the upper and lower sides of the lifting frame (401) through wheel frames; a gap is provided between the four limiting wheels (402) and the inner side of the transformer body (101); the lifting frame (401) is a hollow structure; a voltage regulating tube (403) is fixedly mounted on the bottom of the lifting frame (401); the voltage regulating tube (403) is fixedly mounted on the transformer body (101), and the voltage regulating tube (403) passes through the transformer body (101); a valve is provided at the end of the voltage regulating tube (403); the voltage regulating tube (403) is used to adjust the counterweight of the lifting frame (401).

6. The transformer vacuum degassing automatic oil filling equipment according to claim 5 is characterized by: The film spacer (5) comprises: an isolation insulating pad (501) and an insertion hole (5011); the isolation insulating pad (501) is fixedly mounted on the lifting frame (401); three insertion holes (5011) are provided on the isolation insulating pad (501); the isolation insulating pad (501) is used to reduce the mixing of new and old oils; the three insertion holes (5011) are respectively used to pass through three coils in the transformer body (101); the isolation blind tube (201) passes through the isolation insulating pad (501).

7. The transformer vacuum degassing automatic oil filling equipment according to claim 5 is characterized by: The facing part (6) comprises: a facing rubber ring (601) and a detection tube (602), wherein the facing rubber ring (601) is fixedly sleeved on the outside of the lifting frame (401); the outside of the facing rubber ring (601) is elastically fitted on the inside of the transformer body (101); the inside of the facing rubber ring (601) is inflated with air pressure; the upper tube of the facing rubber ring (601) is connected with the detection tube (602); the detection tube (602) is fixedly installed on the top of the adjustable lifting frame (401) through a bracket; the facing rubber ring (601) is made of rubber flexible insulating material; the facing rubber ring (601) is used to adapt and fit the inner wall of the transformer body (101); when the lifting frame (401) is filled with oil, the gravity of the lifting frame (401) inside the transformer body (101) is greater than the buoyancy of the facing rubber ring (601).

8. The transformer vacuum degassing automatic oil filling equipment according to claim 7 is characterized by: The facing member (6) further comprises: a flashlight (603), a piston (604), a sliding power ring (6041) and upper and lower springs (605); the flashlight (603) is fixedly sleeved on the inner wall of the detection tube (602); the piston (604) is slidably sleeved inside the detection tube (602); the sliding power ring (6041) is fixedly sleeved on the piston (604); the sliding power ring (6041) is attached to the flashlight (603), and the flashlight (603), the sliding power ring (6041) and the prompt light (104) are connected in series to a power source; the upper and lower springs (605) are fixedly mounted on the piston (604), and the other ends of the upper and lower springs (605) are connected to the inside of the flashlight (603).

9. The transformer vacuum degassing automatic oil filling equipment according to claim 1, characterized in that: The oil drain detection component (7) comprises: an oil drain pipe (701) and a discharge pipe (702); the oil drain pipe (701) is fixedly installed at the bottom of the transformer body (101); the discharge pipe (702) is threadedly connected to the oil drain pipe (701); and a valve is provided on the oil drain pipe (701).

10. The transformer vacuum degassing automatic oil filling equipment according to claim 9, characterized in that: The oil discharge detection component (7) further comprises: a stop filter block (703), a pressure sensor (704) and a limit frame (7041); the stop filter block (703) is slidably mounted inside the discharge pipe (702); the limit frame (7041) is fixedly sleeved inside the discharge pipe (702), and a circle of through holes is provided on the limit frame (7041); the pressure sensor (704) is fixedly mounted on the limit frame (7041); the end of the pressure sensor (704) is attached to the stop filter block (703), and the stop filter block (703) is provided with a mesh; the pressure sensor (704) is externally connected to a display; and a spring is provided between the stop filter block (703) and the limit frame (7041).

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