Transformer coil paint dipping device

Abstract

The utility model relates to the technical field of transformer coil processing, and discloses a transformer coil paint dipping device which comprises a paint dipping box, a lifting plate is movably placed in the paint dipping box, and a plurality of coil limiting protruding blocks are evenly and fixedly connected to the upper surface of the lifting plate. A lifting mechanism for driving the lifting plate to lift is arranged on the right side surface of the paint dipping box; a curing mechanism is arranged on the surface of the left side of the paint dipping box; the inner surface and the outer surface of the transformer coil are synchronously and uniformly dried by arranging a cooperative structure of the air disc, the air hood, the first air hole and the second air hole; specifically, after the air hood is attached to the top of the coil limiting protruding block, the draught fan conveys hot air generated by the heating pipe into the air disc, one path of heat flow is vertically sprayed to the inner wall of the coil through the first air hole, and the other path of heat flow is diffused to the outer wall of the coil through the second air hole. The phenomenon of paint film accumulation or local non-curing caused by the curing speed difference of the paint on the inner wall and the outer wall is thoroughly eliminated, and the adhesion uniformity and the curing quality of the insulating paint are improved.

Description

Technical Field

[0001] This utility model relates to the field of transformer coil processing technology, specifically a transformer coil impregnation device. Background Technology

[0002] In transformer manufacturing, coil impregnation is a crucial step in ensuring product performance. Its function is to fill the voids inside the coil with impregnating varnish, enhancing the bond strength between coil windings and improving electrical insulation performance and thermal conductivity.

[0003] In the existing technology, after the transformer coil is produced, when it is impregnated, it is usually done manually by using a clamp to hold the transformer coil and then immersing it in the paint bath. This processing method not only increases the labor intensity of workers, but also causes the paint on the surface of the transformer to drip onto the ground or other places before it dries, resulting in waste and affecting the production quality and production rate of the transformer coil.

[0004] A Chinese patent discloses a transformer coil impregnation device (authorization announcement number CN221596193U). This patented technology includes:

[0005] After placing the coil body under the connecting plate, the arc plate is inserted into the inner coil of the coil body. Then, the torsion block is rotated, which drives the bidirectional screw to rotate. The rotation of the bidirectional screw causes the arc plates on both sides to move outward. During the movement of the arc plates, the inner clamping block clamps and fixes the inner coil of the coil body. Then, the cylinder is activated. During the operation of the cylinder, the connecting plate and the coil body under it are moved down, so that the coil body is inserted into the varnish impregnation tank. This eliminates the need for manual varnish impregnation and reduces the contact area between the clamp and the coil body, thereby improving the efficiency and quality of coil varnish impregnation.

[0006] After the coil body is impregnated with varnish, the fan and heating tube are started. During the operation of the heating tube, the temperature inside the mounting tube rises. At the same time, the fan generates airflow inside the mounting tube, blowing the heat inside the mounting tube to the left and right sides of the coil body, which quickly dries the coil body and improves the impregnation efficiency of the transformer coil.

[0007] However, it has certain drawbacks: it dries the transformer coil through two accelerating drying mechanisms on the left and right. However, due to the structural limitations of the inner wall of the coil, it is difficult for the inner wall to directly contact the hot airflow, resulting in inconsistent curing speeds of the inner and outer wall paints. This can easily lead to paint film accumulation on the inner wall and excessive heating on the outer wall, which seriously affects the uniformity of the insulating paint adhesion and the overall insulation performance. Utility Model Content

[0008] The purpose of this invention is to provide a transformer coil impregnation device to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A transformer coil impregnation device includes an impregnation tank, a lifting plate is movably placed inside the impregnation tank, a plurality of coil limiting protrusions are uniformly fixed to the upper surface of the lifting plate, and a lifting mechanism for driving the lifting plate to rise and fall is provided on the right side surface of the impregnation tank.

[0011] The left side surface of the impregnation tank is provided with a curing mechanism, which includes an L-shaped plate three. A telescopic cylinder two is fixedly connected to the lower surface of the L-shaped plate three. An L-shaped plate four is fixedly connected to the telescopic end of the telescopic cylinder two. An air plate is fixedly connected to the right end of the L-shaped plate four. An air supply mechanism communicating with the interior of the air plate is provided on the upper surface of the air plate. Multiple air covers communicating with the interior of the air plate are uniformly fixed to the lower surface of the air plate. Multiple air holes one are opened on the surface of the air covers. Multiple air holes two are opened on the lower surface of the air plate outside the air covers.

[0012] As a further embodiment of this utility model: the lifting mechanism includes an L-shaped plate, a telescopic cylinder is fixedly connected to the lower surface of the L-shaped plate, and an L-shaped plate is fixedly connected to the telescopic end of the telescopic cylinder.

[0013] As a further embodiment of this utility model: the gas supply mechanism includes a fan, the air inlet end of the fan is fixedly connected to a fan cover, and the inner surface of the fan cover is fixedly connected to a plurality of heating tubes.

[0014] As a further embodiment of this utility model: the right end of the L-shaped plate three is fixed to the left side surface of the impregnation box, the number of the air cover and the coil limiting protrusion are equal, and the air cover is directly opposite the coil limiting protrusion.

[0015] As a further embodiment of this utility model: the left end of the first L-shaped plate is fixed to the right side surface of the impregnation tank, and the left end of the second L-shaped plate is fixed to the right end of the upper surface of the lifting plate.

[0016] As a further embodiment of this utility model: the air outlet of the fan is fixed to the upper surface of the air plate, and the fan is connected to the interior of the air plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention overcomes the limitations of traditional methods that can only dry the outer wall of the coil by setting up a coordinated structure of an air plate, an air cover, and air holes one and two, thus achieving synchronous and uniform drying of the inner and outer surfaces of the transformer coil. Specifically, after the air cover is attached to the top of the coil limiting protrusion, the fan delivers the hot air generated by the heating tube to the inside of the air plate. One stream of hot air is vertically sprayed onto the inner wall of the coil through air hole one, while the other stream diffuses to the outer wall of the coil through air hole two, forming bidirectional hot air. This completely eliminates the accumulation of paint film or local uncured phenomena caused by the difference in curing speed between the inner and outer walls, significantly improving the adhesion uniformity and curing quality of the insulating paint. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a transformer coil impregnation device;

[0020] Figure 2 This is a schematic diagram of the lifting mechanism in a transformer coil impregnation device.

[0021] Figure 3 This is a schematic diagram of the curing mechanism in a transformer coil impregnation device;

[0022] Figure 4 An exploded view of the curing mechanism in a transformer coil impregnation device;

[0023] Figure 5 This is a schematic diagram of the gas supply mechanism in a transformer coil impregnation device.

[0024] In the diagram: 1. Impregnation tank; 2. Lifting plate; 3. Coil limiting protrusion; 4. Lifting mechanism; 5. L-shaped plate one; 6. Telescopic cylinder one; 7. L-shaped plate two; 8. Curing mechanism; 9. L-shaped plate three; 10. Telescopic cylinder two; 11. L-shaped plate four; 12. Air plate; 13. Air supply mechanism; 14. Fan; 15. Air cover; 16. Heating tube; 17. Air cover; 18. Air hole one; 19. Air hole two. Detailed Implementation

[0025] Please see Figure 1 and Figure 2 In this embodiment of the utility model, a transformer coil impregnation device includes an impregnation tank 1. A lifting plate 2 is movably placed inside the impregnation tank 1. A plurality of coil limiting protrusions 3 are uniformly fixed to the upper surface of the lifting plate 2. A lifting mechanism 4 for driving the lifting plate 2 to rise and fall is provided on the right side surface of the impregnation tank 1. The lifting mechanism 4 includes an L-shaped plate 1 5. The left end of the L-shaped plate 1 5 is fixed to the right side surface of the impregnation tank 1. A telescopic cylinder 1 6 is fixed to the lower surface of the L-shaped plate 1 5. An L-shaped plate 2 7 is fixed to the telescopic end of the telescopic cylinder 1 6. The left end of the L-shaped plate 2 7 is fixed to the right end of the upper surface of the lifting plate 2.

[0026] The transformer coil is placed on the upper surface of the lifting plate 2 and is located outside the coil limiting protrusion 3;

[0027] The diameter of the coil limiting protrusion 3 is smaller than the inner diameter of the transformer coil, which serves as a limit to prevent it from slipping off the lifting plate 2.

[0028] The coil limiting protrusion 3 is thin enough; it doesn't need to be too thick.

[0029] The telescopic cylinder 6 is preferably a pneumatic cylinder. Its initial state is an extended state. After it retracts, it can drive the lifting plate 2 to descend, thereby immersing it in the paint.

[0030] exist Figure 1 , Figures 3-5 In the middle: A curing mechanism 8 is provided on the left side surface of the impregnation tank 1. The curing mechanism 8 includes an L-shaped plate 3 9. The right end of the L-shaped plate 3 9 is fixed to the left side surface of the impregnation tank 1. A telescopic cylinder 2 10 is fixed to the lower surface of the L-shaped plate 3 9. An L-shaped plate 4 11 is fixed to the telescopic end of the telescopic cylinder 2 10. An air plate 12 is fixed to the right end of the L-shaped plate 4 11. An air supply mechanism 13 communicating with the upper surface of the air plate 12 is provided. The air supply mechanism 13 includes a fan 14. The air outlet end of the fan 14 is fixed to the air plate 12. The upper surface of the air plate 12 is connected to the air fan 14 and the air inlet end of the air fan 14 is fixedly connected to the air cover 15. Multiple heating tubes 16 are fixedly connected to the inner surface of the air cover 15. Multiple air covers 17 connected to the air plate 12 are evenly fixed to the lower surface of the air plate 12. The number of air covers 17 and coil limiting protrusions 3 are equal. The air cover 17 is directly opposite the coil limiting protrusions 3. Multiple air holes 18 are opened on the surface of the air cover 17. Multiple air holes 19 are opened on the lower surface of the air plate 12 outside the air cover 17.

[0031] The telescopic cylinder is preferably a pneumatic cylinder. Its initial state is an extended state. After it retracts, it can drive the pneumatic disc 12 to descend, so that the pneumatic cover 17 fits perfectly against the coil limiting protrusion 3.

[0032] The air shroud 17 is a hollow cylindrical structure with an opening at the top, and its outer diameter is the same as the diameter of the coil limiting protrusion 3.

[0033] Heating element 16 is preferably an electric heating element, which is used to heat air;

[0034] The blower 14 is used to blow hot air into the air plate 12. The hot air ejected through the second air hole 19 is used to dry the outer surface of the transformer coil, and the hot air ejected through the first air hole 18 is used to dry the inner surface of the transformer coil, thus achieving comprehensive drying of the transformer coil.

[0035] The working principle of this utility model is as follows: In the initial state, the telescopic cylinder 6 is in the extended state, and the lifting plate 2 is located at the upper part of the paint dipping tank 1;

[0036] After the transformer coil is sleeved on the outside of the coil limiting protrusion 3, the telescopic cylinder 6 retracts and drives the lifting plate 2 to descend, so that the coil is immersed in the paint.

[0037] After the paint is applied, the lifting plate 2 is reset, the telescopic cylinder 2 10 retracts and the drive air plate 12 descends, so that the air cover 17 fits against the top of the coil limiting protrusion 3.

[0038] At this time, the fan 14 starts and delivers the air heated by the heating tube 16 to the air plate 12. The hot air is discharged in two ways: one way is sprayed vertically to the inner wall of the coil through the air hole 18, and the other way is diffused to the outer wall of the coil through the air hole 2 19, so as to achieve synchronous curing of the inner and outer surfaces of the coil.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A transformer coil impregnation device, comprising an impregnation tank (1), wherein a lifting plate (2) is movably placed inside the impregnation tank (1), and a plurality of coil limiting protrusions (3) are uniformly fixed on the upper surface of the lifting plate (2), and a lifting mechanism (4) for driving the lifting plate (2) to rise and fall is provided on the right side surface of the impregnation tank (1). Its features are, The left side surface of the impregnation tank (1) is provided with a curing mechanism (8). The curing mechanism (8) includes an L-shaped plate three (9). The lower surface of the L-shaped plate three (9) is fixed with a telescopic cylinder two (10). The telescopic end of the telescopic cylinder two (10) is fixed with an L-shaped plate four (11). The right end of the L-shaped plate four (11) is fixed with an air plate (12). The upper surface of the air plate (12) is provided with an air supply mechanism (13) connected to its interior. The lower surface of the air plate (12) is uniformly fixed with multiple air covers (17) connected to its interior. The surface of the air cover (17) is provided with multiple air holes one (18). The lower surface of the air plate (12) located outside the air cover (17) is provided with multiple air holes two (19).

2. The transformer coil impregnation device according to claim 1, characterized in that, The lifting mechanism (4) includes an L-shaped plate (5), a telescopic cylinder (6) is fixedly connected to the lower surface of the L-shaped plate (5), and an L-shaped plate (7) is fixedly connected to the telescopic end of the telescopic cylinder (6).

3. The transformer coil impregnation device according to claim 1, characterized in that, The gas supply mechanism (13) includes a fan (14), the air inlet end of the fan (14) is fixedly connected to a fan cover (15), and a plurality of heating tubes (16) are fixedly connected to the inner surface of the fan cover (15).

4. The transformer coil impregnation device according to claim 1, characterized in that, The right end of the L-shaped plate (9) is fixed to the left side surface of the immersion tank (1). The number of the air cover (17) and the coil limiting protrusion (3) are equal, and the air cover (17) is directly opposite the coil limiting protrusion (3).

5. A transformer coil impregnation apparatus according to claim 2, characterized in that, The left end of the L-shaped plate one (5) is fixed to the right side surface of the immersion tank (1), and the left end of the L-shaped plate two (7) is fixed to the right end of the upper surface of the lifting plate (2).

6. The transformer coil impregnation apparatus according to claim 3, characterized in that, The air outlet of the fan (14) is fixed to the upper surface of the air plate (12), and the fan (14) is connected to the interior of the air plate (12).

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