An epoxy resin pouring device for a transformer core

Abstract

The utility model belongs to pouring device field, specifically speaking, it is epoxy resin pouring device of transformer core, including jar body, the inside installation of jar body is used for moving mould slide rail, the top of jar body is equipped with storage jar, the bottom intercommunication of storage jar has distribution pipe, the bottom intercommunication of distribution pipe has a plurality of hose, and the hose and jar body are set through, the top intercommunication of storage jar has feeding port, the top intercommunication of storage jar has exhaust port, the outside of storage jar is fixedly connected with the jacket, the both sides symmetrical intercommunication of jacket has circulating pipeline, the inside of storage jar is equipped with the stirring subassembly for mixing epoxy resin, through setting the jacket, make the device can through the jacket to epoxy resin in storage jar and carry out preheating, improve the flowability before epoxy resin pouring, make epoxy resin can more fast, evenly fill the tiny gap between iron core and winding, avoid appearing bubble or interstice, improve the quality of device to transformer core pouring.

Description

Technical Field

[0001] This utility model relates to the field of casting devices, specifically an epoxy resin casting device for transformer cores. Background Technology

[0002] Casting is a crucial step in transformer manufacturing, directly affecting its insulation performance, mechanical strength, and operational reliability. Epoxy resin, as the primary insulating material, requires strict control of parameters such as temperature and viscosity during the casting process to ensure product quality. Dry-type transformer casting typically employs vacuum pressure casting. In a vacuum environment, epoxy resin is mixed with a curing agent and then injected into the mold, effectively eliminating air bubbles and improving insulation performance.

[0003] During use and observation, it was found that when the working environment temperature is low, the viscosity of epoxy resin increases significantly and the fluidity deteriorates. This can lead to insufficient pouring of the casting material in the mold, forming air bubbles or voids, and thus reducing the casting quality.

[0004] Therefore, an epoxy resin casting device for transformer cores is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: An epoxy resin casting device for transformer cores, comprising a tank body, with a slide rail for moving the mold installed inside the tank body; a storage tank at the top of the tank body; a distribution pipe connected to the bottom of the storage tank; multiple flexible hoses connected to the bottom of the distribution pipe, with the hoses and tank body being through-connected; a feed inlet connected to the top of the storage tank; an exhaust port connected to the top of the storage tank; a jacket fixedly connected to the outside of the storage tank; symmetrical circulation pipes connected to both sides of the jacket; and a stirring assembly for mixing epoxy resin inside the storage tank. By setting the jacket, the device can preheat the epoxy resin in the storage tank through the jacket, improving the fluidity of the epoxy resin before casting, allowing the epoxy resin to fill the tiny gaps between the core and windings more quickly and evenly, avoiding air bubbles or voids, and improving the quality of the transformer core casting.

[0007] Preferably, the stirring assembly includes a motor; the motor is mounted on the top of the storage tank; connecting shafts are symmetrically distributed and rotatably connected to the top of the storage tank; a belt is sleeved between the output end of the motor and the connecting shaft; a vertical rod is provided inside the connecting shaft; spiral blades are fixedly connected to the bottom of the vertical rod and the bottom of the output end of the motor; through the cooperation of the motor and the connecting shaft, multiple spiral blades can stir the epoxy resin inside the storage tank, improve the fluidity of the epoxy resin in the storage tank, and facilitate the device to squeeze and discharge air bubbles in the epoxy resin.

[0008] Preferably, the upright and the connecting shaft are slidably connected; the top of the upright and the connecting shaft are connected by a spring; symmetrical rotating wheels are connected to both sides of the top of the upright; a top plate is symmetrically distributed and fixed to the top of the storage tank; the surface of the top plate has two recesses; the rotating wheels are located at the top of the top plate; by setting the rotating wheels and the top plate, when the upright rotates with the connecting shaft under the action of belt drive, the rotating wheels will slide along the surface of the top plate. When it is at the highest point of the top plate, the spring between the upright and the connecting shaft is in a stretched state. Therefore, the spiral blades and the upright will move vertically back and forth under the sliding cooperation between the rotating wheels and the top plate, so that the spiral blades can stir the epoxy resin at different depths in the storage tank, enhance the extrusion pressure on the bubbles in the epoxy resin, and improve the effect of the device in stirring and venting the epoxy resin.

[0009] Preferably, a plurality of first baffles are fixedly connected to the inner wall of the jacket; a plurality of second baffles are fixedly connected to the inner wall of the jacket; the first baffles and the second baffles are staggered; by setting the first baffles and the second baffles, the flow path of the heating medium inside the jacket is greatly extended by the obstruction of the first baffles and the second baffles after the heating medium enters the jacket through the circulation pipe, thereby increasing the heating time of the medium on the epoxy resin in the storage tank and improving the utilization rate of the heating medium inside the jacket by the device.

[0010] Preferably, the outer wall of the jacket is fixed with thermal insulation cotton; the thermal insulation cotton is used to keep the medium inside the jacket warm; by setting thermal insulation cotton, because the thermal insulation cotton itself has a low thermal conductivity, the heat exchange between the heating medium inside the jacket and the outside can be reduced, the heat loss during the operation of the jacket can be reduced, and the thermal energy utilization rate of the heating medium of the device can be further improved.

[0011] Preferably, a filter is connected to the middle of the circulation pipe on one side via a flange; the filter is equipped with a filter pad inside; by setting the filter pad, when the medium enters the jacket through the circulation pipe, the impurities inside will be filtered out by the filter pad first, reducing the possibility of impurities entering the jacket and causing blockage.

[0012] The advantages of this utility model are: 1. The epoxy resin casting device for transformer cores described in this utility model, by setting a jacket, allows the device to preheat the epoxy resin in the storage tank through the jacket, thereby improving the fluidity of the epoxy resin before casting. This enables the epoxy resin to fill the tiny gaps between the core and the winding more quickly and evenly, avoiding the formation of air bubbles or voids, and improving the quality of the device's casting of the transformer core.

[0013] 2. The epoxy resin casting device for transformer cores described in this utility model, through the cooperation of a motor and a connecting shaft, enables multiple spiral blades to stir the epoxy resin inside the storage tank, thereby improving the fluidity of the epoxy resin in the storage tank and facilitating the expulsion of air bubbles from the epoxy resin. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the main body of this utility model; Figure 2 This is a schematic diagram of the tank structure in this utility model; Figure 3 This is a schematic diagram of the structure of the storage tank in this utility model; Figure 4 This is a schematic diagram of the jacket structure in this utility model; Figure 5 This is a schematic diagram of the filter structure in this utility model.

[0016] In the diagram: 1. Tank body; 12. Slide rail; 13. Storage tank; 14. Distribution pipe; 15. Hose; 16. Inlet; 17. Exhaust port; 18. Jacket; 19. Circulation pipe; 2. Motor; 22. Connecting shaft; 23. Upright; 24. Spiral blade; 3. Rotary wheel; 32. Top plate; 4. First baffle; 42. Second baffle; 5. Insulation cotton; 6. Filter; 62. Filter pad. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0018] Specific implementation examples are given below.

[0019] Please see Figures 1 to 5 As shown in the embodiment of this utility model, an epoxy resin casting device for a transformer core includes a tank 1, with a slide rail 12 for moving the mold installed inside the tank 1; a storage tank 13 is provided on the top of the tank 1; a distribution pipe 14 is connected to the bottom of the storage tank 13; multiple hoses 15 are connected to the bottom of the distribution pipe 14, and the hoses 15 and the tank 1 are connected through each other; a feed inlet 16 is connected to the top of the storage tank 13; an exhaust port 17 is connected to the top of the storage tank 13; a jacket 18 is fixedly connected to the outside of the storage tank 13; circulation pipes 19 are symmetrically connected to both sides of the jacket 18; a stirring assembly for mixing epoxy resin is provided inside the storage tank 13; during operation, a certain amount of epoxy resin can be added into the storage tank 13 through the feed inlet 16. Before casting the transformer core, a heating medium, such as gas or liquid, can be injected into the jacket 18 through one side of the circulation pipe 19 by a circulation pump. The heating medium in the jacket 18 will heat the epoxy resin inside the storage tank 13 through heat transfer, and at the same time... The epoxy resin is stirred and mixed by activating the stirring assembly to improve its fluidity. After preheating, the circulation pump can be stopped and the valve at the inlet 16 can be closed to seal the storage tank 13. After connecting the exhaust port 17 to the vacuum pump, the air bubbles expelled during the stirring of the epoxy resin in the storage tank 13 can be removed. After the mold is moved into the tank 1 via the slide rail 12, the tank 1 is closed and the metering pump between the distribution pipe 14 and the storage tank 13 is opened, so that the epoxy resin in the storage tank 13 can be poured into the mold through the distribution pipe 14 and the hose 15. The specific pouring operation is a mature existing technology and will not be described in detail here. In addition, the pumps mentioned above are all existing technologies and are not shown in the figure. By setting the jacket 18, the device can preheat the epoxy resin in the storage tank 13 through the jacket 18, improve the fluidity of the epoxy resin before pouring, and make the epoxy resin fill the small gaps between the iron core and the winding more quickly and evenly, avoiding the appearance of air bubbles or voids, and improving the quality of the device's pouring of the transformer iron core.

[0020] Please see Figure 3As shown, the stirring assembly includes a motor 2; the motor 2 is mounted on the top of the storage tank 13; connecting shafts 22 are symmetrically distributed and rotatably connected to the top of the storage tank 13; a belt is sleeved between the output end of the motor 2 and the connecting shaft 22; a vertical rod 23 is provided inside the connecting shaft 22; spiral blades 24 are fixedly connected to the bottom of the vertical rod 23 and the bottom of the output end of the motor 2; when the jacket 18 heats the epoxy resin in the storage tank 13, the spiral blades 24 at the bottom of the motor 2 and the spiral blades 24 at the bottom of the connecting shafts 22 on both sides will rotate simultaneously under the transmission of the belt, so as to stir the epoxy resin in the storage tank 13. Because the spiral blades 24 have a spiral structure, the epoxy resin will be lifted by the spiral blades 24, further improving the fluidity of the epoxy resin in the storage tank 13; through the cooperation of the motor 2 and the connecting shaft 22, multiple spiral blades 24 can stir the epoxy resin inside the storage tank 13, improve the fluidity of the epoxy resin in the storage tank 13, and also facilitate the device to squeeze and discharge the air bubbles in the epoxy resin.

[0021] Please see Figure 3 As shown, the upright 23 and the connecting shaft 22 are slidably connected; the top of the upright 23 and the connecting shaft 22 are connected by a spring; the top of the upright 23 is symmetrically rotatably connected to two sides; the top of the storage tank 13 is symmetrically distributed and fixedly connected to a top plate 32; the surface of the top plate 32 has two recesses; the rotating wheel 3 is located at the top of the top plate 32; by setting the rotating wheel 3 and the top plate 32, when the upright 23 rotates with the connecting shaft 22 under the action of belt drive, the rotating wheel 3 will slide along the surface of the top plate 32. When it is at the highest point of the top plate 32, the spring between the upright 23 and the connecting shaft 22 is in a stretched state. Therefore, the spiral blade 24 and the upright 23 will move vertically back and forth under the sliding cooperation between the rotating wheel 3 and the top plate 32, so that the spiral blade 24 can stir the epoxy resin at different depths in the storage tank 13, enhance the extrusion pressure on the bubbles in the epoxy resin, and improve the effect of the device on stirring and venting the epoxy resin.

[0022] Please see Figure 4 As shown, a plurality of first baffles 4 are fixedly connected to the inner wall of the jacket 18; a plurality of second baffles 42 are fixedly connected to the inner wall of the jacket 18; the first baffles 4 and the second baffles 42 are staggered; by setting the first baffles 4 and the second baffles 42, the heating medium enters the jacket 18 through the circulation pipe 19 and is greatly extended in the flow path of the medium in the jacket 18 by the obstruction of the first baffles 4 and the second baffles 42, thereby increasing the heating time of the medium on the epoxy resin in the storage tank 13 and improving the utilization rate of the heating medium in the jacket 18 by the device.

[0023] Please see Figure 4As shown, the outer wall of the jacket 18 is fixed with thermal insulation cotton 5; the thermal insulation cotton 5 is used to keep the medium inside the jacket 18 warm; by setting thermal insulation cotton 5, because thermal insulation cotton 5 itself has a low thermal conductivity, the heat exchange between the heating medium inside the jacket 18 and the outside can be reduced, the heat loss during the operation of the jacket 18 can be reduced, and the thermal energy utilization rate of the heating medium of the device can be further improved.

[0024] Please see Figure 5 As shown, a filter 6 is connected to the middle of the circulation pipe 19 on one side via a flange; the filter 6 is provided with a filter pad 62 inside; by setting the filter pad 62, when the medium enters the jacket 18 through the circulation pipe 19, the impurities inside will be filtered out by the filter pad 62 first, reducing the possibility of impurities entering the jacket 18 and causing blockage.

[0025] Working principle: A certain amount of epoxy resin is added into the storage tank 13 through the feed inlet 16. Before injection into the transformer, a heating medium, such as gas or liquid, can be injected into the jacket 18 through the circulation pipe 19 on one side of the circulation pump. The heating medium in the jacket 18 will heat the epoxy resin inside the storage tank 13 through heat transfer. At the same time, the epoxy resin can be stirred and mixed by starting the stirring component to improve the flowability of the epoxy resin. After preheating, the circulation pump can be stopped and the valve at the feed inlet 16 can be closed to seal the storage tank 13. After connecting the exhaust port 17 to the vacuum pump, the air bubbles expelled during the stirring of the epoxy resin in the storage tank 13 can be removed. After the mold is moved into the tank 1 through the slide rail 12, The tank 1 is closed and the metering pump between the distribution pipe 14 and the storage tank 13 is opened, allowing the epoxy resin in the storage tank 13 to be poured into the mold through the distribution pipe 14 and the hose 15. The specific pouring operation is existing technology and will not be described in detail here. Furthermore, since the pumps mentioned above are all existing technology, they are not shown in the figure. When the jacket 18 heats the epoxy resin in the storage tank 13, the motor 2 can be started, causing the spiral blades 24 at the bottom of the motor 2 and the spiral blades 24 at the bottom of the connecting shafts 22 on both sides to rotate simultaneously under the drive of the belt, thus stirring the epoxy resin in the storage tank 13. Because the spiral blades 24 have a spiral structure, the epoxy resin is lifted by the spiral blades 24, further... To improve the fluidity of epoxy resin in storage tank 13, the rotating wheel 3 and top plate 32 are installed so that when the upright 23 rotates with the connecting shaft 22 under belt drive, the rotating wheel 3 slides along the surface of the top plate 32. When it is at the highest point of the top plate 32, the spring between the upright 23 and the connecting shaft 22 is in a stretched state. Therefore, the spiral blade 24 and the upright 23 will move vertically back and forth under the sliding cooperation between the rotating wheel 3 and the top plate 32, so that the spiral blade 24 can stir the epoxy resin at different depths in storage tank 13, enhance the extrusion pressure on the bubbles in the epoxy resin, and improve the effect of the device on stirring and venting the epoxy resin. By setting the first baffle 4 and the second baffle 42, the heating medium enters through the circulation pipe 19. The flow path of the medium inside the jacket 18 is greatly extended due to the obstruction of the first baffle 4 and the second baffle 42, which increases the heating time of the medium on the epoxy resin in the storage tank 13 and also improves the utilization rate of the heating medium in the jacket 18. By setting the insulation cotton 5, which has a low thermal conductivity, the heat exchange between the heating medium inside the jacket 18 and the outside can be reduced, reducing the heat loss during the operation of the jacket 18 and further improving the thermal energy utilization rate of the heating medium. By setting the filter pad 62, when the medium enters the jacket 18 through the circulation pipe 19, the impurities inside will be filtered out by the filter pad 62, reducing the possibility of impurities entering the jacket 18 and causing blockage.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An epoxy resin casting device for a transformer core, comprising a tank (1), characterized in that: The tank (1) is equipped with a slide rail (12) for moving the mold; the top of the tank (1) is provided with a storage tank (13); the bottom of the storage tank (13) is connected to a distribution pipe (14); the bottom of the distribution pipe (14) is connected to multiple hoses (15), and the hoses (15) and the tank (1) are connected through each other; the top of the storage tank (13) is connected to a feed inlet (16); the top of the storage tank (13) is connected to an exhaust port (17); a jacket (18) is fixed to the outside of the storage tank (13); circulation pipes (19) are symmetrically connected to both sides of the jacket (18); the storage tank (13) is equipped with a stirring assembly for mixing epoxy resin inside.

2. The epoxy resin casting device for a transformer core according to claim 1, characterized in that: The stirring assembly includes a motor (2); the motor (2) is installed on the top of the storage tank (13); the top of the storage tank (13) is symmetrically distributed and rotatably connected with connecting shafts (22); a belt is sleeved between the output end of the motor (2) and the connecting shaft (22); a vertical rod (23) is provided inside the connecting shaft (22); spiral blades (24) are fixedly connected to the bottom of the vertical rod (23) and the bottom of the output end of the motor (2).

3. The epoxy resin casting device for a transformer core according to claim 2, characterized in that: The upright (23) and the connecting shaft (22) are slidably connected; the top of the upright (23) and the connecting shaft (22) are connected by a spring; the top of the upright (23) is symmetrically connected to the two sides of the top; the top of the storage tank (13) is symmetrically distributed and fixedly connected to the top plate (32); the surface of the top plate (32) has two recesses; the rotating wheel (3) is located on the top of the top plate (32).

4. The epoxy resin casting device for a transformer core according to claim 3, characterized in that: The inner wall of the sleeve (18) is fixed with a plurality of first baffles (4); the inner wall of the sleeve (18) is fixed with a plurality of second baffles (42); the first baffles (4) and the second baffles (42) are staggered.

5. The epoxy resin casting device for a transformer core according to claim 4, characterized in that: The jacket (18) is fixed to the outer wall with thermal insulation cotton (5); the thermal insulation cotton (5) is used to keep the medium inside the jacket (18) warm.

6. The epoxy resin casting device for a transformer core according to claim 5, characterized in that: A filter (6) is connected to the middle of the circulation pipe (19) on one side via a flange; the filter (6) has a filter pad (62) inside.

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