An oil-immersed transformer interlayer insulation oil channel

Abstract

The application discloses an oil-immersed transformer interlayer insulation oil channel and relates to the technical field of transformer oil channels. The oil-immersed transformer interlayer insulation oil channel comprises an oil channel body, diffusion frames are fixedly installed on the left side and the right side of the oil channel body, and the surface of the oil channel body is provided with a control mechanism and a separation device. The control mechanism comprises a clamping block, a turning plate, a transmission rod, a contact plate and a filter plate. An active groove is formed in the top of the inner wall of the oil channel body. The clamping block is slidably installed in the inner part of the active groove. The turning plate is fixedly installed in the inner part of the oil channel body. The left end of the transmission rod is rotatably installed in the inner part of the active groove. The bottom of the transmission rod is fixedly installed with a protruding block. The right end of the transmission rod is connected with the top of the clamping block through a universal joint. The thrust generated by the flow of transformer oil can push the filter plate to rotate to the left. The rotation of the filter plate to the left can reduce the obstruction of the filter plate to the transformer oil, so that the filter plate cannot affect the flow of the transformer oil and the cooling of the winding.

Description

Technical Field

[0001] This invention relates to the field of transformer oil channel technology, specifically to an interlayer insulating oil channel for an oil-immersed transformer. Background Technology

[0002] Transformer oil channels refer to the internal channel system of an oil-immersed transformer, which is used for the flow of insulating oil inside the transformer. It mainly consists of insulating oil tanks, oil pipes, insulating structural spacers, and insulating partitions.

[0003] Patent publication number CN216054232U relates to an interlayer insulating oil channel for an oil-immersed transformer, comprising a rectangular tube. Several external guide blocks are equidistantly fixed to the outer walls of the two short sides of the rectangular tube, and several internal guide blocks are equidistantly fixed to the inner walls of the two short sides of the rectangular tube. By setting the external and internal guide blocks, a continuous guiding structure is formed between the two windings of the oil-immersed transformer, thereby ensuring that the transformer oil flows in a specified direction, reducing its dispersion, and improving the internal transformer oil replacement efficiency. In this patent, an arc-shaped groove is fitted with a guide block, and the guide block slides into the arc-shaped groove. Furthermore, a connecting oblique block is fixed to the top surface of the guide block and slides into the oblique groove. This increases the guiding range, limits the cross-sectional size of the flow path, and, with a constant circulation volume, increases the flow velocity of the flow path, promoting heat dissipation.

[0004] In the aforementioned patent, increasing the guiding range and limiting the cross-sectional size of the flow path can increase the flow velocity of the flow path and promote heat dissipation while keeping the circulation volume constant. However, filter plates are generally installed inside the pipe to separate impurities in the transformer oil. However, installing filter plates will affect the flow effect inside the oil passage. When the internal temperature of the transformer is high and the transformer oil needs to flow rapidly, the filter plate will block the flow of the transformer oil, thereby affecting the cooling effect of the transformer oil on the windings. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an interlayer insulating oil channel for an oil-immersed transformer, solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: an interlayer insulating oil channel for an oil-immersed transformer, comprising an oil channel body, on the left and right sides of the oil channel body a diffusion frame is fixedly installed, and a control mechanism and a separation device are provided on the surface of the oil channel body;

[0007] The control mechanism includes a locking block, a flap, a transmission rod, a contact plate, and a filter plate. A movable groove is formed on the top of the inner wall of the oil passage body. The locking block is slidably installed inside the movable groove. The flap is fixedly installed inside the oil passage body. The left end of the transmission rod is rotatably installed inside the movable groove, and a protrusion is fixedly installed at the bottom of the transmission rod. The right end of the transmission rod is fixed to the top of the locking block via a universal joint. The contact plate is rotatably installed on the top of the inner wall of the oil passage body. The bottom of the filter plate is rotatably installed inside the oil passage body. A spring is installed between the filter plate and the oil passage body. When the contact plate rotates upward via the protrusion, it pushes the transmission rod upward, allowing transformer oil to flow through the filter plate. When the transformer oil flows rapidly inside the oil passage body, it pushes the contact plate to rotate further upward, which in turn pushes the transmission rod upward.

[0008] According to the above technical solution, a torsion spring is provided between the contact plate and the oil passage body, the locking block is in contact with the filter plate, and a reset spring is provided between the locking block and the movable groove. The elastic force of the reset spring will drive the locking block to reset.

[0009] According to the above technical solution, the separation device includes a mounting frame, a rotating shaft, a turbine, a filter plate, a swing rod, a counterweight, an arc-shaped rod, a bearing, a limiting rod, a funnel plate, and a collection frame. When the rotating shaft rotates, it drives the swing rod to rotate, and when the swing rod rotates, it drives the counterweight to rotate. Under the action of centrifugal force, the swing rod rotates on the rotating shaft, and when the rotating shaft rotates, it drives the arc-shaped rod to rotate. The mounting frame is fixedly installed on the top of the inner wall of the oil passage body. The rotating shaft is rotatably installed on the left side of the mounting frame. The turbine is fixedly installed on the circumferential surface of the rotating shaft. The filter plate is fixedly installed inside the oil passage body. The swing rod is hinged to the circumferential surface of the rotating shaft. The counterweight is fixedly installed at the end of the swing rod away from the rotating shaft. The arc-shaped rod is fixedly installed on the surface of the swing rod. The bearing is slidably installed on the circumferential surface of the rotating shaft. The limiting rod is fixedly installed on the outer wall of the bearing. The top of the limiting rod is slidably installed on the top of the inner wall of the oil passage body. The funnel plate is fixedly installed on the outer wall of the bearing. The collection frame is fixedly installed on the bottom of the inner wall of the oil passage body.

[0010] According to the above technical solution, a push plate is fixedly installed on the outer wall of the bearing, a cover plate is rotatably installed on the top of the collection frame, a second torsion spring is provided between the cover plate and the collection frame, a third torsion spring is provided between the swing rod and the rotating shaft, and a first spring is provided between the limiting rod and the oil passage body. When the funnel plate moves, the push plate will push the cover plate to close the collection frame, so as to prevent the transformer oil from carrying out the impurities collected inside the collection frame when it flows rapidly inside the oil passage body.

[0011] According to the above technical solution, a retraction device is provided on the surface of the oil passage body, and a protective device is provided on the surface of the flap. The retraction device includes a stirring plate, a moving plate, and a transmission plate. When the transmission plate moves, it will drive the moving plate to move. When the moving plate moves, it will drive the stirring plate to rotate through friction. An arc-shaped groove is provided on the outer wall of the oil passage body, and the stirring plate is rotatably installed inside the arc-shaped groove. A sliding groove is provided on the inner wall of the oil passage body, and the moving plate is slidably installed inside the sliding groove. The transmission plate is fixedly installed on the surface of the moving plate, and the moving plate is in contact with the stirring plate.

[0012] According to the above technical solution, a second spring is provided between the moving plate and the slide groove. The elastic force of the second spring will drive the moving plate to reset, and the transmission plate will contact the funnel plate.

[0013] According to the above technical solution, the protective device includes a force-bearing plate, a control switch, a micro oil pump, and an inclined plate. When the force-bearing plate moves downward, it presses the control switch. After the control switch is pressed, it turns on the micro oil pump. The micro oil pump draws transformer oil from the bottom of the oil channel body and sprays it onto the winding for cooling. A groove is formed at the bottom of the inner wall of the oil channel body. The force-bearing plate is slidably installed inside the groove. The control switch is fixedly installed at the bottom of the groove. The micro oil pump is fixedly installed on the surface of the inclined plate. The inclined plate is fixedly installed on the left and right sides of the inner wall of the oil channel body. The micro oil pump is connected to the bottom of the oil channel body through a pipe.

[0014] According to the above technical solution, the control switch is electrically connected to the micro oil pump, a signal transmitter is fixedly installed on the top of the micro oil pump, the signal transmitter is electrically connected to the micro oil pump, and a spring is provided between the force plate and the groove. The control switch will turn on the signal transmitter and send a signal to remind the staff that the transformer oil inside the transformer is too low.

[0015] This invention provides an interlayer insulating oil channel for an oil-immersed transformer. It has the following beneficial effects:

[0016] (1) In this invention, when the transformer oil discharged from the inside of the oil channel body diffuses around the oil channel body, the transformer oil will push the contact plate to rotate upward. When the transformer oil flows rapidly inside the device body, the rotation of the contact plate will push the transmission rod to rotate upward. The upward movement of the transmission rod will drive the locking block to move upward. When the locking block moves upward, it will release the restriction on the filter plate. The large thrust generated by the rapid flow of transformer oil will push the filter plate to rotate to the left. The leftward rotation of the filter plate will reduce the obstruction of the transformer oil and prevent the filter plate from affecting the flow speed of the transformer oil and thus affecting the cooling of the winding.

[0017] (2) In this invention, the filter plate removes impurities from the transformer oil, preventing excessive impurities from affecting the insulation effect of the transformer oil. At the same time, the collection frame collects the impurities deposited around the filter plate. When the transformer oil flows inside the oil channel body, it drives the turbine and the rotating shaft to rotate. When the rotating shaft rotates, it drives the swing rod and the counterweight to rotate. Under the action of centrifugal force, the counterweight and the swing rod push the funnel plate and the bearing to move. When the funnel plate moves, the push plate pushes the cover plate to close the collection frame, preventing the impurities collected inside the collection frame from being carried out when the transformer oil flows rapidly inside the oil channel body.

[0018] (3) In this invention, due to the unstable flow of transformer oil inside the oil channel body, the funnel plate will continuously move left and right. When the funnel plate moves left and right, it will push the transmission plate and the moving plate to move. When the moving plate moves, it will push the stirring plate to rotate. The rotation of the stirring plate will push the transformer oil around the oil channel body to move towards the inner edge of the transformer, thereby improving the cooling effect on the transformer oil.

[0019] (4) In this invention, when the transformer oil inside the transformer gradually decreases, the level of the transformer oil will gradually decrease, the pressure inside the oil channel body will decrease, the elasticity of the spring will push the force plate to move upward, the upward movement of the force plate will release the pressure on the control switch, so that the control switch will turn on the micro oil pump, the micro oil pump will draw the transformer oil at the bottom of the oil channel body so that the transformer oil is discharged from the micro oil pump, preventing the transformer oil from decreasing and affecting the cooling effect on the winding. At the same time, the control switch will turn on the signal transmitter to send a signal to remind the staff that there is too little transformer oil inside the transformer. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the flap structure of the present invention;

[0023] Figure 4 This is a schematic diagram showing the position and structure of the mounting bracket and rotating shaft of the present invention;

[0024] Figure 5 This is a schematic diagram of the bearing and funnel plate positions of the present invention;

[0025] Figure 6 This is a schematic diagram of the internal structure of the oil passage body of the present invention;

[0026] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of section A in the middle;

[0027] Figure 8 This is a schematic diagram of the position structure of the locking block and the transmission rod of the present invention.

[0028] In the diagram: 1. Oil passage body; 2. Diffusion frame; 4. Locking block; 5. Flip plate; 6. Transmission rod; 7. Contact plate; 91. Mounting frame; 92. Rotating shaft; 93. Turbine; 94. Filter plate; 95. Swing rod; 96. Counterweight; 97. Arc rod; 98. Bearing; 99. Limiting rod; 910. Funnel plate; 911. Collection frame; 912. Cover plate; 913. Push plate; 101. Stirring plate; 102. Moving plate; 103. Transmission plate; 111. Force plate; 112. Control switch; 113. Miniature oil pump; 114. Inclined plate; 115. Signal transmitter. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-8 One embodiment of the present invention is: an interlayer insulating oil channel for an oil-immersed transformer, comprising an oil channel body 1, a diffusion frame 2 fixedly installed on the left and right sides of the oil channel body 1, and a control mechanism and a separation device provided on the surface of the oil channel body 1.

[0031] The control mechanism includes a locking block 4, a flap 5, a transmission rod 6, a contact plate 7, and a filter plate 94. A movable groove is provided on the top of the inner wall of the oil passage body 1. The locking block 4 is slidably installed inside the movable groove. The flap 5 is fixedly installed inside the oil passage body 1. The left end of the transmission rod 6 is rotatably installed inside the movable groove. A torsion spring is provided between the left end of the transmission rod 6 and the inner wall of the movable groove. A protrusion is fixedly installed at the bottom of the transmission rod 6. The right end of the transmission rod 6 is fixed to the top of the locking block 4 via a universal joint. The contact plate 7 is rotatably installed on the top of the inner wall of the oil passage body 1. The bottom of the filter plate 94 is rotatably installed inside the oil passage body 1. A spring is provided between the filter plate 94 and the oil passage body 1. When the contact plate 7 rotates upwards via the protrusion, it pushes the transmission rod 6 upwards. The thrust generated by the transformer oil flow pushes the filter plate 94 to rotate to the left. The leftward rotation of the filter plate 94 reduces obstruction to the transformer oil, preventing the filter plate 94 from affecting the flow of the transformer oil and reducing the cooling effect on the windings.

[0032] A torsion spring is provided between the contact plate 7 and the oil passage body 1. The locking block 4 contacts the filter plate 94. A reset spring is provided between the locking block 4 and the movable groove. The elastic force of the reset spring will drive the locking block 4 to reset. The bottom of the locking block 4 away from the filter plate 94 is set as an arc shape, so that the spring can drive the filter plate 94 to push the locking block 4 upward to reset.

[0033] The separation device includes a mounting frame 91, a rotating shaft 92, a turbine 93, a filter plate 94, a swing rod 95, a counterweight 96, an arc-shaped rod 97, a bearing 98, a limiting rod 99, a funnel plate 910, and a collection frame 911. The mounting frame 91 is fixedly installed on the top of the inner wall of the oil passage body 1. The rotating shaft 92 is rotatably installed on the left side of the mounting frame 91. The turbine 93 is fixedly installed on the circumferential surface of the rotating shaft 92. The filter plate 94 is fixedly installed inside the oil passage body 1. The swing rod 95 is hinged to the circumferential surface of the rotating shaft 92. The counterweight 96 is fixedly installed on the swing rod 95 away from the rotating shaft 92. At one end, an arc-shaped rod 97 is fixedly installed on the surface of the swing rod 95, a bearing 98 is slidably installed on the circumferential surface of the rotating shaft 92, a limiting rod 99 is fixedly installed on the outer wall of the bearing 98, the top of the limiting rod 99 is slidably installed on the top of the inner wall of the oil passage body 1, a funnel plate 910 is fixedly installed on the outer wall of the bearing 98, and a collection frame 911 is fixedly installed on the bottom of the inner wall of the oil passage body 1. The filter plate 94 removes impurities from the transformer oil to prevent excessive impurities from affecting the insulation effect of the transformer oil. At the same time, the collection frame 911 collects the impurities deposited around the filter plate 94.

[0034] A push plate 913 is fixedly installed on the outer wall of the bearing 98. A cover plate 912 is rotatably installed on the top of the collection frame 911. A second torsion spring is provided between the cover plate 912 and the collection frame 911. A third torsion spring is provided between the swing rod 95 and the rotating shaft 92. A first spring is provided between the limiting rod 99 and the oil passage body 1. When the funnel plate 910 moves, the push plate 913 will push the cover plate 912 to close the collection frame 911, so as to prevent the transformer oil from carrying out the impurities collected inside the collection frame 911 when it flows rapidly inside the oil passage body 1.

[0035] In this embodiment, during operation: When the transformer oil flows inside the oil channel body 1, it diffuses from both sides of the diffuser frame 2 as it exits the oil channel body 1. The flow of transformer oil inside the oil channel body 1 pushes the contact plate 7 to rotate upwards. The transformer oil flows through the filter plate 94. When the internal temperature of the transformer rises, the internal oil pump increases the flow rate of the transformer oil to improve heat dissipation. The rapid flow of transformer oil inside the oil channel body 1 further pushes the contact plate 7 to rotate upwards. This upward rotation of the contact plate 7 pushes the transmission rod 6 to rotate upwards. The upward movement of the transmission rod 6 causes the locking block 4 to move upwards. When the locking block 4 moves upwards, it releases the restriction on the filter plate 94, allowing the filter to pass through. When the filter plate 94 is subjected to a large thrust from the transformer oil, it will rotate to the left and compress the spring. The rotation of the filter plate 94 reduces the obstruction to the transformer oil. At the same time, when the internal temperature of the transformer is normal, the oil pump controls the normal flow of the transformer oil and reduces noise. At this time, the thrust of the transformer oil on the filter plate 94 decreases. Under the elastic force of the spring, the filter plate 94 returns to the vertical position. The top of the filter plate 94 pushes the arc surface of the locking block 4, causing the locking block 4 to rise and drive the transmission rod 6 to rotate and compress the torsion spring. After the filter plate 94 passes the locking block 4, the locking block 4 and the transmission rod 6 return to the position under the action of the torsion spring, and the locking block 4 locks the filter plate 94 again, achieving the effect of filtering and removing impurities.

[0036] When the transformer oil flows inside the oil passage body 1, it drives the turbine 93 and the rotating shaft 92 to rotate. When the rotating shaft 92 rotates, it drives the swing rod 95 to rotate. When the swing rod 95 rotates, it drives the counterweight 96 to rotate. Under the action of centrifugal force, the counterweight 96 and the swing rod 95 rotate on the rotating shaft 92. When the rotating shaft 92 rotates, it drives the arc rod 97 to rotate. When the arc rod 97 rotates, it drives the bearing 98 and the funnel plate 910 to move. When the funnel plate 910 moves, it drives the push plate 913 to move. When the push plate 913 moves, it drives the cover plate 912 to rotate. When the cover plate 912 rotates, it closes the top of the collection frame 911.

[0037] Please see Figures 1-8 Based on the above embodiments, in another embodiment of the present invention, a retraction device is provided on the surface of the oil channel body 1, and a protective device is provided on the surface of the flap 5. The retraction device includes a stirring plate 101, a moving plate 102, and a transmission plate 103. An arc-shaped groove is provided on the outer wall of the oil channel body 1, and the stirring plate 101 is rotatably installed inside the arc-shaped groove. A sliding groove is provided on the inner wall of the oil channel body 1, and the moving plate 102 is slidably installed inside the sliding groove. The transmission plate 103 is fixedly installed on the surface of the moving plate 102. The moving plate 102 contacts the stirring plate 101. The rotation of the stirring plate 101 will push the transformer oil around the oil channel body 1 to move towards the inner edge of the transformer, thereby improving the cooling effect on the transformer oil.

[0038] A second spring is provided between the movable plate 102 and the slide groove. The elastic force of the second spring will drive the movable plate 102 to reset, and the transmission plate 103 will contact the funnel plate 910.

[0039] The protective device includes a force-bearing plate 111, a control switch 112, a micro oil pump 113, and an inclined plate 114. A groove is provided at the bottom of the inner wall of the oil channel body 1. The force-bearing plate 111 is slidably installed inside the groove. The control switch 112 is fixedly installed at the bottom of the groove. The micro oil pump 113 is fixedly installed on the surface of the flip plate 5. The inclined plate 114 is fixedly installed on the left and right sides of the inner wall of the oil channel body 1. The micro oil pump 113 is connected to the bottom of the oil channel body 1 through a pipe. The micro oil pump 113 will draw transformer oil from the bottom of the oil channel body 1 so that the transformer oil is discharged from the micro oil pump 113, preventing the transformer oil from decreasing and affecting the cooling effect on the winding.

[0040] The control switch 112 is electrically connected to the miniature oil pump 113. A signal transmitter 115 is fixedly installed on the top of the miniature oil pump 113. The signal transmitter 115 is electrically connected to the miniature oil pump 113. A spring is provided between the force plate 111 and the groove. The control switch 112 will turn on the signal transmitter 115 to send a signal to remind the staff that the transformer oil inside the transformer is too low.

[0041] In this embodiment, when the funnel plate 910 moves, it will push the transmission plate 103 to move. When the transmission plate 103 moves, it will drive the moving plate 102 to move. When the moving plate 102 moves, it will drive the stirring plate 101 to rotate through friction. When the stirring plate 101 rotates, it will push the transformer oil inside the transformer to move towards the inner edge of the transformer wall.

[0042] When the transformer oil inside the transformer decreases or leaks, the oil pressure inside the oil passage body 1 decreases, preventing the force plate 111 from moving downwards. The elastic force of the spring will push the force plate 111 upwards. When the force plate 111 moves upwards, it will not be able to press the control switch 112. When the control switch 112 is released, the micro oil pump 113 will be turned on. The micro oil pump 113 will draw transformer oil from the bottom of the oil passage body 1 and spray it onto the winding for cooling. The micro oil pump 113 is connected in series with the signal transmitter 115. When the micro oil pump 113 is turned on, the signal transmitter 115 will be powered on and will send a signal that the transformer oil has decreased.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An interlayer insulating oil channel for an oil-immersed transformer, comprising an oil channel body (1), characterized in that: A diffuser frame (2) is fixedly installed on the left and right sides of the oil passage body (1), and a control mechanism and a separation device are provided on the surface of the oil passage body (1). The control mechanism includes a locking block (4), a flap (5), a transmission rod (6), a contact plate (7), and a filter plate (94). The top of the inner wall of the oil passage body (1) is provided with a movable groove. The locking block (4) is slidably installed inside the movable groove. The flap (5) is fixedly installed inside the oil passage body (1). The left end of the transmission rod (6) is rotatably installed inside the movable groove. A protrusion is fixedly installed at the bottom of the transmission rod (6). The right end of the transmission rod (6) is fixed to the top of the locking block (4) through a universal joint. The contact plate (7) is rotatably installed on the top of the inner wall of the oil passage body (1). The bottom of the filter plate (94) is rotatably installed inside the oil passage body (1). A spring is provided between the filter plate (94) and the oil passage body (1). The surface of the oil passage body (1) is provided with a distance-away device, and the surface of the flap (5) is provided with a protective device. A torsion spring is provided between the contact plate (7) and the oil passage body (1), the locking block (4) contacts the filter plate (94), and a reset spring is provided between the locking block (4) and the movable groove; The separation device includes a mounting frame (91), a rotating shaft (92), a turbine (93), a swing rod (95), a counterweight (96), an arc-shaped rod (97), a bearing (98), a limiting rod (99), a funnel plate (910), and a collection frame (911). The mounting frame (91) is fixedly installed on the top of the inner wall of the oil passage body (1). The rotating shaft (92) is rotatably installed on the left side of the mounting frame (91). The turbine (93) is fixedly installed on the circumferential surface of the rotating shaft (92). The swing rod (95) is hinged to the circumferential surface of the rotating shaft (92). The counterweight (96) is fixedly installed at the end of the swing rod (95) away from the rotating shaft (92), the arc rod (97) is fixedly installed on the surface of the swing rod (95), the bearing (98) is slidably installed on the circumferential surface of the rotating shaft (92), the limiting rod (99) is fixedly installed on the outer wall of the bearing (98), the top of the limiting rod (99) is slidably installed on the top of the inner wall of the oil passage body (1), the funnel plate (910) is fixedly installed on the outer wall of the bearing (98), and the collecting frame (911) is fixedly installed on the bottom of the inner wall of the oil passage body (1).

2. The interlayer insulating oil channel of an oil-immersed transformer according to claim 1, characterized in that: A push plate (913) is fixedly installed on the outer wall of the bearing (98), a cover plate (912) is rotatably installed on the top of the collection frame (911), a second torsion spring is provided between the cover plate (912) and the collection frame (911), a third torsion spring is provided between the swing rod (95) and the rotating shaft (92), and a first spring is provided between the limiting rod (99) and the oil passage body (1).

3. The interlayer insulating oil channel of an oil-immersed transformer according to claim 2, characterized in that: The remote device includes a stirring plate (101), a moving plate (102), and a transmission plate (103). The outer wall of the oil passage body (1) is provided with an arc-shaped groove. The stirring plate (101) is rotatably installed inside the arc-shaped groove. The inner wall of the oil passage body (1) is provided with a sliding groove. The moving plate (102) is slidably installed inside the sliding groove. The transmission plate (103) is fixedly installed on the surface of the moving plate (102). The moving plate (102) is in contact with the stirring plate (101).

4. The interlayer insulating oil channel of an oil-immersed transformer according to claim 3, characterized in that: A second spring is provided between the movable plate (102) and the chute, and the transmission plate (103) is in contact with the funnel plate (910).

5. The interlayer insulating oil channel of an oil-immersed transformer according to claim 4, characterized in that: The protective device includes a force-bearing plate (111), a control switch (112), a micro oil pump (113), and an inclined plate (114). The bottom of the inner wall of the oil passage body (1) is provided with a groove. The force-bearing plate (111) is slidably installed inside the groove. The control switch (112) is fixedly installed at the bottom of the groove. The micro oil pump (113) is fixedly installed on the surface of the flap (5). The inclined plate (114) is fixedly installed on the left and right sides of the inner wall of the oil passage body (1). The micro oil pump (113) is connected to the bottom of the oil passage body (1) through a pipe.

6. The interlayer insulating oil channel of an oil-immersed transformer according to claim 5, characterized in that: The control switch (112) is electrically connected to the micro oil pump (113). A signal transmitter (115) is fixedly installed on the top of the micro oil pump (113). The signal transmitter (115) is electrically connected to the micro oil pump (113). A spring is provided between the force plate (111) and the groove.

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