Oil flow collecting box and oil-immersed transformer

Abstract

This utility model discloses a manifold oil guide box and an oil-immersed transformer. By incorporating a detachable fastening plate, the difficulty of cleaning the manifold oil guide box can be reduced, and the cleaning effect can be improved. The manifold oil guide box includes a fixed reinforcing plate, a vertical plate, and a fastening plate. The fixed reinforcing plate is disposed at the bottom of the transformer tank side wall and is stacked on top of the transformer tank side wall; the fixed reinforcing plate extends along the long axis of the transformer tank. The vertical plate is disposed on the bottom of the transformer tank and is parallel to and spaced apart from the fixed reinforcing plate. The fastening plate is disposed parallel to the fixed reinforcing plate, and the two opposite sides of the fastening plate are detachably connected to the upper end of the fixed reinforcing plate and the upper end of the vertical plate, respectively, so that together with the fixed reinforcing plate, the vertical plate, the transformer tank side wall, and the transformer tank bottom, they form a manifold oil guide channel.

Description

Technical Field

[0001] This utility model belongs to the field of transformer technology, specifically relating to a busbar oil guide box and an oil-immersed transformer. Background Technology

[0002] like Figure 1 As shown, in an oil-immersed transformer, the insulating oil in the cooler 8 enters the manifold oil guide box 11 through the lower pipe, and then flows into the transformer body 7 through the bottom oil guide box 9 and the oil guide box on the lower clamp 71 to cool the coils. Afterwards, it flows back into the cooler 8 through the upper pipe above the transformer oil tank 2 for further cooling, and the cycle continues continuously. Figure 1 The arrows in the diagram indicate the direction of the insulating oil flow.

[0003] In existing technologies, the manifold oil guide box 11 is typically formed by welding multiple plates to create a closed oil channel. During the plate welding process, weld slag may remain in the oil channel. To clean the weld slag that enters the oil channel during welding, such as... Figure 2 As shown, a slag cleaning operation flange 12 needs to be opened on the manifold oil guide box 11 so that the welding slag inside the manifold oil guide box 11 can be manually cleaned through the slag cleaning operation flange 12.

[0004] However, this method of cleaning by opening the cleaning operation flange 12 increases the amount of oil in the manifold.

[0005] The manufacturing process of step 11 increases production costs, and manual operation of the flange for cleaning slag is also required.

[0006] 12. The slag removal process is difficult to operate, which makes the process time-consuming and labor-intensive, affecting the slag removal effect. The residual welding slag may cause quality problems during the operation of oil-immersed transformers. Utility Model Content

[0007] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the existing technology by providing a busbar oil guide box and an oil-immersed transformer. By setting a detachable fastening plate, the difficulty of cleaning the busbar oil guide box can be reduced and the cleaning effect can be improved.

[0008] In a first aspect, this utility model provides a manifold oil guide box, which includes a fixed reinforcing plate, a vertical plate, and a fastening plate. The fixed reinforcing plate is disposed at the bottom of the transformer tank sidewall and is stacked with the transformer tank sidewall; the fixed reinforcing plate extends along the long axis of the transformer tank. The vertical plate is disposed on the bottom of the transformer tank and is parallel to and spaced apart from the fixed reinforcing plate. The fastening plate is disposed parallel to the fixed reinforcing plate, and the two opposite sides of the fastening plate are detachably connected to the upper end of the fixed reinforcing plate and the upper end of the vertical plate, respectively, so as to form a manifold oil guide channel together with the fixed reinforcing plate, the vertical plate, the transformer tank sidewall, and the transformer tank bottom.

[0009] In some embodiments, the two opposite sides of the fastening plate are detachably connected to the upper end of the fixing reinforcing plate and the upper end of the upright plate by screws, respectively.

[0010] In some embodiments, the screw is a countersunk screw.

[0011] In some embodiments, the height of the upper end of the fixed reinforcing plate is higher than the height of the upper end of the upright plate. In the direction from the fixed reinforcing plate to the upright plate, the fastening plate is formed by sequentially connecting a horizontal plate, an inclined plate, and a vertical plate; the horizontal plate is connected to the upper end of the fixed reinforcing plate by screws, the inclined plate slopes downwards and is connected to the vertical plate, and the vertical plate is connected to the upper end of the upright plate by screws.

[0012] In some embodiments, the angle between the inclined plate and the bottom of the transformer tank is α, where 30°≤α≤60°.

[0013] In some embodiments, the fixing reinforcing plate is fixed to the bottom of the transformer tank sidewall by welding; and / or, the upright plate is fixed to the bottom of the transformer tank by welding.

[0014] In some embodiments, the manifold oil guide box further includes an inclined reinforcing plate. The inclined reinforcing plate is disposed between the fixed reinforcing plate and the vertical plate, with its upper end fixedly connected to the middle portion of the fixed reinforcing plate and its lower end fixedly connected to the middle portion of the vertical plate.

[0015] In some embodiments, the upright plate is provided with an oil guide hole. The oil confluence channel is connected to the external oil guide box at the bottom of the tank through the oil guide hole.

[0016] Therefore, the oil distribution box provided in this embodiment of the utility model, by setting a fixed reinforcing plate and stacking the fixed reinforcing plate at the bottom of the transformer tank side wall, can strengthen the strength of the transformer tank side wall and prevent the transformer tank from deforming during use. By setting a vertical plate parallel to the fixed reinforcing plate and setting the vertical plate parallel to and spaced apart from the fixed reinforcing plate, space can be reserved between the vertical plate and the fixed reinforcing plate for the flow of insulating oil. By setting a snap-fit ​​plate and detachably connecting its two opposite sides to the upper ends of the fixed reinforcing plate and the vertical plate, the snap-fit ​​plate, the fixed reinforcing plate, the vertical plate, the transformer tank sidewall, and the transformer tank bottom can collectively form a manifold oil guiding channel. This facilitates the installation and removal of the snap-fit ​​plate. During the assembly of the manifold oil guiding box, the weld slag between the vertical plate and the fixed reinforcing plate can be cleaned first, and then the snap-fit ​​plate can be installed. Compared with the welded manifold oil guiding box in the prior art, the manifold oil guiding box in this embodiment does not require a separate slag cleaning flange for slag cleaning, which reduces the difficulty of cleaning the manifold oil guiding box and helps to improve the slag cleaning effect, thereby avoiding quality problems caused by residual weld slag during the operation of the oil-immersed transformer. It also simplifies the manufacturing process of the manifold oil guiding box and improves the manufacturing efficiency of the oil-immersed transformer.

[0017] Secondly, this utility model embodiment also provides an oil-immersed transformer, which includes a transformer body, a current-conducting oil box as described in the first aspect, and a cooler. The transformer body includes a transformer tank and a transformer core; the transformer tank is filled with insulating oil, and the transformer core is immersed in the insulating oil in the transformer tank. The cooler is connected to the top oil outlet of the transformer tank and the current-conducting oil channel of the current-conducting oil box, respectively, so that the insulating oil in the cooler flows into the transformer tank through the current-conducting oil channel to cool the transformer core, and then flows back into the cooler for further cooling, and the cycle continues.

[0018] In some embodiments, the oil-immersed transformer further includes a bottom oil guide box. The bottom oil guide box is disposed on the bottom of the transformer tank and located below the transformer body; the bottom oil guide box passes through the upright plate of the current-carrying oil guide box and communicates with the current-carrying oil channel of the current-carrying oil guide box, and the bottom oil guide box is also in communication with the interior of the transformer body; insulating oil entering the current-carrying oil channel flows through the bottom oil guide box and then into the interior of the transformer body to cool the transformer body.

[0019] The oil-immersed transformer provided in this embodiment of the present invention has the same beneficial effects as the above-mentioned busbar oil box, and will not be described again here. Attached Figure Description

[0020] Figure 1 : A schematic diagram of an oil-immersed transformer provided in the prior art;

[0021] Figure 2 : A schematic diagram of a manifold oil guide box provided in the prior art;

[0022] Figure 3 : A schematic diagram of a manifold oil guide box provided for an embodiment of the utility model;

[0023] Figure 4 : A positional diagram of an inclined reinforcing plate provided for an embodiment of the utility model;

[0024] Figure 5 : A schematic diagram of a screw provided for an embodiment of the utility model;

[0025] Figure 6 : A top view of a fastening plate provided for an embodiment of the utility model;

[0026] Figure 7 : A front view of a snap-fit ​​plate provided for an embodiment of the utility model;

[0027] Figure 8 : A cross-sectional view of a snap-fit ​​plate provided for an embodiment of the utility model.

[0028] Among them, 1-fixed reinforcing plate; 2-transformer oil tank; 3-vertical plate; 4-fastening plate; 5-screw; 6-oil guide hole; 7-transformer body; 8-cooler; 9-bottom oil guide box; 10-slanted reinforcing plate; 11-combination oil guide box; 12-slag cleaning operation flange; 21-transformer oil tank side wall; 22-transformer oil tank bottom; 71-lower clamp. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] Example 1:

[0031] like Figure 3 As shown, this utility model embodiment provides a busbar oil guide box 11, which is applied in the transformer oil tank of an oil-immersed transformer.

[0032] like Figure 3 and Figure 4As shown, the manifold oil guide box 11 includes a fixed reinforcing plate 1, a vertical plate 3, and a fastening plate 4. The fixed reinforcing plate 1 is disposed at the bottom of the transformer tank side wall 21 and is stacked with the transformer tank side wall 21; the fixed reinforcing plate 1 extends along the long axis of the transformer tank 2. The vertical plate 3 is disposed on the bottom 22 of the transformer tank and is parallel to and spaced apart from the fixed reinforcing plate 1. The fastening plate 4 is disposed parallel to the fixed reinforcing plate 1, and the two opposite sides of the fastening plate 4 are detachably connected to the upper end of the fixed reinforcing plate 1 and the upper end of the vertical plate 3, respectively, so as to form a manifold oil guide channel together with the fixed reinforcing plate 1, the vertical plate 3, the transformer tank side wall 21, and the transformer tank bottom 22.

[0033] For example, the fixing reinforcing plate 1 is disposed on the long axis side of the transformer tank 2. The fixing reinforcing plate 1 can be made of non-magnetic plate (e.g., copper-nickel alloy) or copper plate to reduce magnetic loss during the operation of the oil-immersed transformer.

[0034] For example, the fixing reinforcing plate 1 is fixed to the bottom of the transformer tank side wall 21 by welding to improve the connection strength between the fixing reinforcing plate 1 and the transformer tank side wall 21.

[0035] After the reinforcing plates 1 are stacked on the side wall 21 of the transformer tank, the strength of the side wall 21 of the transformer tank can be strengthened, and deformation of the transformer tank can be avoided during use.

[0036] For example, the upright plate 3 is vertically fixed to the bottom 22 of the transformer oil tank by welding. The upright plate 3 also extends along the long axis of the transformer oil tank 2, that is, the upright plate 3 and the fixed reinforcing plate 1 are parallel to each other. The gap between the upright plate 3 and the fixed reinforcing plate 1 can reserve space for the insulating oil to flow through.

[0037] For example, the materials of the upright plate 3 and the snap-fit ​​plate 4 can be non-magnetic plates or copper plates to reduce magnetic losses during the operation of the oil-immersed transformer.

[0038] For example, such as Figure 3 As shown, the fastening plate 4 extends along the long axis of the transformer oil tank 2. The two long sides of the fastening plate 4 are connected to the upper end of the fixed reinforcing plate 1 and the upper end of the upright plate 3 respectively through connectors (such as bolts, screws, etc.) so that the fastening plate 4 can be detached.

[0039] With the above-described configuration, during the assembly of the manifold 11, the weld slag between the upright plate 3 and the fixed reinforcing plate 1 can be cleaned first, and then the snap-fit ​​plate 4 can be installed. Compared with the welded manifold 11 in the prior art, there is no need to open a separate slag cleaning operation flange 12 for slag cleaning, which can reduce the difficulty of cleaning the manifold 11, improve the slag cleaning effect, and thus avoid residual weld slag causing quality problems during the operation of the oil-immersed transformer; it also simplifies the manufacturing process of the manifold 11 and improves the manufacturing efficiency of the oil-immersed transformer.

[0040] Therefore, the oil distribution box 11 provided in this embodiment of the present invention, by setting a fixed reinforcing plate 1 and stacking the fixed reinforcing plate 1 at the bottom of the transformer tank side wall 21, can strengthen the transformer tank side wall 21 and prevent deformation of the transformer tank during use. By setting a vertical plate 3 parallel to the fixed reinforcing plate 1 and setting the vertical plate 3 parallel to and spaced apart from the fixed reinforcing plate 1, a space for insulating oil to flow can be reserved between the vertical plate 3 and the fixed reinforcing plate 1. By setting a fastening plate 4 and detachably connecting its two opposite sides to the upper ends of the fixed reinforcing plate 1 and the vertical plate 3, the fastening plate 4, the fixed reinforcing plate 1, the vertical plate 3, the transformer tank side wall 21, and the transformer tank bottom 22 can together form a flow channel for oil conduction. This facilitates the installation and removal of the fastening plate 4. During the assembly of the flow channel box 11, the welding slag between the vertical plate 3 and the fixed reinforcing plate 1 can be cleaned first, and then the fastening plate 4 can be installed. Compared with the welded flow channel box in the prior art, the flow channel box 11 in this embodiment does not require a separate slag cleaning operation flange 12 for slag cleaning, which reduces the difficulty of cleaning the flow channel box 11 and helps to improve the slag cleaning effect, thereby avoiding quality problems caused by residual welding slag during the operation of the oil-immersed transformer. It also simplifies the manufacturing process of the flow channel box 11 and improves the manufacturing efficiency of the oil-immersed transformer.

[0041] In some embodiments, combined with Figure 3 and Figure 5 The two opposite sides of the fastening plate 4 are detachably connected to the upper end of the fixing reinforcing plate 1 and the upper end of the upright plate 3 by screws 5.

[0042] For example, in combination Figure 3 , Figure 4 , Figure 6 and Figure 7 A first through hole is provided on the side of the fastening plate 4 that connects to the fixing reinforcing plate 1, and a first threaded hole is provided at the upper end of the fixing reinforcing plate 1. The screw 5 passes through the first through hole on the fastening plate 4 and is screwed into the first threaded hole of the fixing reinforcing plate 1. A second through hole is provided on the side of the fastening plate 4 that connects to the upper end of the upright plate 3, and a second threaded hole is provided at the upper end of the upright plate 3. The screw 5 passes through the second through hole on the upright plate 3 and is screwed into the second threaded hole of the upright plate 3.

[0043] With the above setup, the fastening plate 4 can be installed and removed by screwing in and out the screw 5.

[0044] In some embodiments, such as Figure 5 As shown, screw 5 is a countersunk screw.

[0045] With the above settings, after the manifold oil guide box 11 is assembled, the surface of the manifold oil guide box 11 can be flat and have a good electrical shape.

[0046] In some embodiments, such as Figure 3 , Figure 4 and Figure 8 As shown, the height of the upper end of the fixed reinforcing plate 1 is higher than the height of the upper end of the upright plate 3. Figure 6 , Figure 7 and Figure 8 As shown, in the direction from the fixed reinforcing plate 1 to the vertical plate 3, the fastening plate 4 is formed by connecting a horizontal plate, an inclined plate and a vertical plate in sequence. The horizontal plate is connected to the upper end of the fixed reinforcing plate 1 by screws 5. The inclined plate is connected to the vertical plate after tilting from top to bottom. The vertical plate is connected to the upper end of the vertical plate 3 by screws 5.

[0047] For example, the snap-fit ​​plate 4 can be formed by bending a non-magnetic plate or a copper plate.

[0048] Understandable, combined Figure 6 , Figure 7 and Figure 8 The first through hole on the aforementioned fastening plate 4 is located on the horizontal plate, and the second through hole is located on the vertical plate 3.

[0049] Through the above settings, combined with Figure 1 This can prevent the fastening plate 4 from protruding in the direction of the transformer body 7, increase the distance between the fastening plate 4 and the transformer body 7, and thus increase the insulation distance between the transformer body 7 and the fastening plate 4.

[0050] In some embodiments, the included angle between the inclined plate and the bottom 22 of the transformer tank is α, where 30°≤α≤60°.

[0051] For example, the value of α can be 30°, 45°, or 60°, etc.

[0052] When the position and height of the vertical plate 3 are fixed, a smaller value of α (e.g., α = 10°) will result in a smaller cross-sectional area of ​​the oil conduit channel; a larger value of α (e.g., α = 80°) will result in a smaller distance between the upper end of the inclined plate and the transformer body 7.

[0053] By setting α within the above range, it can be ensured that there is sufficient insulation distance between the transformer body 7 and the snap-fit ​​plate 4, and that the final enclosed oil conduit channel has sufficient cross-sectional area to ensure the flow rate of the insulating oil.

[0054] In some embodiments, such as Figure 4 As shown, the manifold oil guide box 11 also includes an inclined reinforcing plate 10. The inclined reinforcing plate 10 is disposed between the fixed reinforcing plate 1 and the vertical plate 3. The upper end of the inclined reinforcing plate 10 is fixedly connected to the middle part of the fixed reinforcing plate 1, and the lower end of the inclined reinforcing plate 10 is fixedly connected to the middle part of the vertical plate 3.

[0055] For example, the inclined reinforcing plate 10 can be a steel plate with a relatively short length (e.g., 20mm-50mm) and a thickness of 5mm, and the number of inclined reinforcing plates 10 can be one or more.

[0056] For example, the inclined reinforcing plate 10 is fixedly connected to the fixed reinforcing plate 1 and the vertical plate 3 by welding.

[0057] The above settings can enhance the connection strength between the fixed reinforcing plate 1 and the upright plate 3, strengthen the overall structural strength of the manifold oil guide box 11, and prevent the shape of the manifold oil guide box 11 from deforming.

[0058] In some embodiments, combined with Figure 3 and Figure 4 An oil guide hole 6 is provided on the upright plate 3. The oil confluence channel is connected to the external oil guide box 9 at the bottom of the tank through the oil guide hole 6.

[0059] For example, the number and size of the oil guide holes 6 are adapted to the number and size of the oil guide boxes 9 at the bottom of the tank.

[0060] With the above settings, the insulating oil in the busbar oil box 11 can enter the bottom oil box 9 through the oil guide hole 6, and finally be transported to the transformer body 7 to cool the coil.

[0061] Example 2:

[0062] Combination Figure 1 This utility model embodiment also provides an oil-immersed transformer, which includes a transformer body, a current-conducting oil box 11 as described in Embodiment 1, and a cooler 8. The transformer body includes a transformer tank 2 and a transformer body 7; the transformer tank 2 is filled with insulating oil, and the transformer body 7 is immersed in the insulating oil in the transformer tank 2. The cooler 8 is connected to the top oil outlet of the transformer tank 2 and the current-conducting oil channel of the current-conducting oil box 11, so that the insulating oil in the cooler 8 flows into the transformer tank 2 through the current-conducting oil channel to cool the transformer body 7, and then flows back into the cooler 8 for further cooling, and the process is repeated.

[0063] For example, the transformer body 7 includes an iron core, coils, an upper clamp, and a lower clamp 71.

[0064] For example, such as Figure 3 and Figure 4 As shown, there can be two manifold oil guide boxes 11, which are respectively installed on the two long shaft sides inside the transformer oil tank 2.

[0065] For example, the cooler 8 is fixed to the outside of the transformer oil tank 2, and the cooler 8 can be a plate-type radiator. The oil inlet of the cooler 8 is connected to the top oil outlet of the transformer oil tank 2 through the upper pipe, and the oil outlet of the cooler 8 is connected to the lower pipe. The lower pipe passes through the side wall 21 of the transformer oil tank and is connected to the oil conduit channel of the oil conduit box 11.

[0066] For example, the number of coolers 8 can also be two, with two coolers 8 corresponding to two manifold oil guide boxes 11, and each cooler 8 connected to a corresponding manifold oil guide box 11.

[0067] The above settings can reduce the difficulty of cleaning the slag in the busbar oil box 11 of the oil-immersed transformer, thus better removing the welding slag in the transformer oil tank 2, thereby avoiding quality problems caused by the inability to effectively remove welding impurities and improving the manufacturing efficiency of the oil-immersed transformer.

[0068] In some embodiments, combined with Figure 1 and Figure 3 The oil-immersed transformer also includes a bottom oil guide box 9. The bottom oil guide box 9 is installed on the bottom 22 of the transformer tank and located below the transformer body 7. The bottom oil guide box 9 passes through the vertical plate 3 of the current-connecting oil guide box 11 and is connected to the current-connecting oil guide channel of the current-connecting oil guide box 11. The bottom oil guide box 9 is also connected to the transformer body oil guide channel inside the transformer body 7. The insulating oil that enters the current-connecting oil guide channel flows through the bottom oil guide box 9 and enters the interior of the transformer body 7 to cool the transformer body 7.

[0069] For example, such as Figure 3 As shown, the bottom oil guide box 9 is vertically arranged between the two busbar oil guide boxes 11, that is, the bottom oil guide box 9 extends along the short axis of the transformer tank 2.

[0070] For example, there are multiple bottom oil guide boxes 9, which are fixed to the bottom 22 of the transformer tank by welding.

[0071] For example, such as Figure 3As shown, there are oil delivery holes on the top wall of the bottom oil guide box 9, and a lower clamping oil guide box is provided on the lower clamping member 71 in the transformer body 7; the lower end of the lower clamping oil guide box is connected to the bottom oil guide box 9 through the oil delivery hole, and the upper end of the lower clamping oil guide box faces the transformer body oil guide channel inside the transformer body 7.

[0072] The insulating oil entering the confluence oil channel flows sequentially through the bottom oil guide box 9, the lower clamp oil guide box, and upwards along the transformer body oil guide channel to carry away the heat on the transformer body 7 coil. After converging at the top inside the transformer oil tank 2, it enters the cooler 8.

[0073] With the above settings, the low-temperature insulating oil flowing from the cooler 8 can be transported to the transformer body 7 through the oil distribution box 11 and the bottom oil distribution box 9 to cool the transformer body 7 and improve the cooling effect of the transformer body 7.

[0074] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A confluence oil guiding box, characterized by, include: A fixed reinforcing plate (1) is provided at the bottom of the transformer tank side wall (21) and is stacked with the transformer tank side wall (21); the fixed reinforcing plate (1) extends along the long axis of the transformer tank (2); A vertical plate (3) is installed on the bottom (22) of the transformer tank, and is parallel to and spaced apart from the fixed reinforcing plate (1); and, The fastening plate (4) is arranged parallel to the fixed reinforcing plate (1). The two opposite sides of the fastening plate (4) are detachably connected to the upper end of the fixed reinforcing plate (1) and the upper end of the upright plate (3), so as to form a convergence oil guiding channel together with the fixed reinforcing plate (1), the upright plate (3), the transformer tank side wall (21), and the transformer tank bottom (22).

2. The manifold oil guide box according to claim 1, characterized in that, The two opposite sides of the fastening plate (4) are detachably connected to the upper end of the fixed reinforcing plate (1) and the upper end of the upright plate (3) by screws (5).

3. The manifold oil guide box according to claim 2, characterized in that, The screw (5) is a countersunk screw.

4. The manifold oil guide box according to claim 2, characterized in that, The height of the upper end of the fixed reinforcing plate (1) is higher than the height of the upper end of the upright plate (3); In the direction from the fixed reinforcing plate (1) to the upright plate (3), the fastening plate (4) is formed by connecting a horizontal plate, an inclined plate and a vertical plate in sequence; the horizontal plate is connected to the upper end of the fixed reinforcing plate (1) by the screw (5), the inclined plate is connected to the vertical plate after tilting from top to bottom, and the vertical plate is connected to the upper end of the upright plate (3) by the screw (5).

5. The manifold oil guide box according to claim 4, characterized in that, The angle between the inclined plate and the bottom (22) of the transformer tank is α, where 30°≤α≤60°.

6. The manifold oil guide box according to claim 1, characterized in that, The fixed reinforcing plate (1) is fixed to the bottom of the side wall (21) of the transformer tank by welding; and / or, The upright plate (3) is fixed to the bottom (22) of the transformer oil tank by welding.

7. The manifold oil guide box according to claim 1, characterized in that, It also includes inclined reinforcing plates (10); The inclined reinforcing plate (10) is disposed between the fixed reinforcing plate (1) and the vertical plate (3). The upper end of the inclined reinforcing plate (10) is fixedly connected to the middle part of the fixed reinforcing plate (1), and the lower end of the inclined reinforcing plate (10) is fixedly connected to the middle part of the vertical plate (3).

8. The manifold oil guide box according to claim 1, characterized in that, The vertical plate (3) is provided with an oil guide hole (6); The oil confluence channel is connected to the external bottom oil guide box (9) through the oil guide hole (6).

9. An oil-immersed transformer, characterized in that, include: The transformer body includes a transformer tank (2) and a transformer body (7); the transformer tank (2) is filled with insulating oil, and the transformer body (7) is immersed in the insulating oil in the transformer tank (2); The manifold oil guide box (11) according to any one of claims 1-8; and, The cooler (8) is connected to the top oil outlet of the transformer tank (2) and the oil confluence channel of the oil confluence box (11) respectively, so that the insulating oil in the cooler (8) flows into the transformer tank (2) through the oil confluence channel to cool the transformer body (7), and then flows back into the cooler (8) to cool, and circulates.

10. The oil-immersed transformer according to claim 9, characterized in that, It also includes an oil guide box at the bottom of the tank (9); The bottom oil guide box (9) is set on the bottom (22) of the transformer tank and located below the transformer body (7); the bottom oil guide box (9) passes through the upright plate (3) of the current guide box (11) and is connected to the current guide channel of the current guide box (11). The bottom oil guide box (9) is also connected to the body oil guide channel inside the transformer body (7); the insulating oil entering the current guide channel flows through the bottom oil guide box (9) and enters the interior of the transformer body (7) to cool the transformer body (7).

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