Transformer winding constant voltage drying device

Abstract

The utility model relates to transformer production technical field discloses constant voltage drying device of transformer winding, including processing station, fume collector and reinforcing frame, the top rear side fixedly connected with support frame of processing station, the top intercommunication of fume collector has the connecting barrel, the bottom of fume collector is provided with circulating mechanism, the inside of fume collector is provided with dehumidification mechanism, the bottom of processing station is provided with heating mechanism, the top of support frame is provided with drive mechanism, the top of processing station is provided with clamping mechanism, the circulating mechanism includes heat -proof shrinkable cylinder, and heat -proof shrinkable cylinder intercommunication is in the bottom of fume collector, in the utility model, through heat -proof shrinkable cylinder to winding carries out sealing treatment, starts the fan and will inject gas in the heating box, and the hot gas of inhaling will enter the circulating pipe in the filter cylinder, and the heat is reblown into the inside of heat -proof shrinkable cylinder through the fan, realizes the air circulation and dry processing in the inside.

Description

Technical Field

[0001] This utility model relates to the field of transformer manufacturing technology, and in particular to a constant pressure drying device for transformer windings. Background Technology

[0002] As the core equipment for voltage transformation and power transmission in the power system, the insulation performance of the transformer windings directly affects the operational stability and service life. After the transformer is manufactured, repaired, or shut down for a long time, moisture is easily absorbed inside the windings, which leads to a decrease in insulation resistance and may even cause partial discharge and short circuit faults. Therefore, drying the transformer windings is a key step in ensuring the safe and reliable operation of the power system.

[0003] However, traditional devices mainly rely on bottom heating devices and fans working together to heat the air and create thermal convection, transferring heat to the winding surface to achieve moisture evaporation. While this method can avoid local overheating of the winding to some extent, heat loss is particularly prominent in actual operation. Due to the large temperature difference between the inside and outside of the drying chamber, coupled with the lack of effective insulation, a large amount of heat is rapidly dissipated into the environment through the chamber walls. At the same time, the airflow disturbance generated by the forced convection of the fan exacerbates the diffusion of heat in the air medium, making it difficult to maintain a stable temperature in the drying area. In addition, the single bottom heating mode results in uneven heating of the upper and lower parts of the winding. The upper area, being farther from the heat source and experiencing faster heat loss, has a significantly lower drying efficiency than the lower area. This uneven heat distribution not only prolongs the overall drying cycle but also increases energy consumption and operating costs. More importantly, the rapid heat loss causes the humidity inside the drying chamber to rebound, reducing the moisture evaporation rate and affecting the drying effect. This makes it difficult to meet the requirements of modern power equipment for efficient and energy-saving drying processes. Therefore, a constant-pressure drying device for transformer windings is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a transformer winding constant pressure drying device, which aims to improve the problem in the prior art that there is a lack of effective heat preservation structure, and a large amount of heat is quickly dissipated into the environment through the cavity wall, which reduces the moisture evaporation rate and affects the drying effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a transformer winding constant pressure drying device, comprising a processing table, a gas collecting hood, and a reinforcing frame. A support frame is fixedly connected to the top rear side of the processing table. A connecting cylinder is connected to the top of the gas collecting hood. A circulation mechanism is provided at the bottom of the gas collecting hood. A dehumidification mechanism is provided inside the gas collecting hood. A heating mechanism is provided at the bottom of the processing table. A driving mechanism is provided at the top of the support frame. A clamping mechanism is provided at the top of the processing table.

[0006] The circulation mechanism includes a heat-insulating shrink tube connected to the bottom of the gas collection hood. A fixing ring is fixedly connected to the bottom of the heat-insulating shrink tube, and a magnetic ring is fixedly connected to the bottom of the fixing ring. A rubber ring is fixedly connected to the bottom of the magnetic ring. A filter tube is connected to the right side of the outer wall of the connecting tube. A circulation pipe is connected to the right end of the filter tube. The bottom end of the circulation pipe passes through the top of the processing table and is connected to the connecting cover. A fan is fixedly connected to the top of the connecting cover. A filter assembly is installed inside the filter tube.

[0007] As a further description of the above technical solution:

[0008] The dehumidification mechanism includes a water collection tank, which is fixedly connected to the bottom inner side of the air collection hood. The top inner side of the air collection hood is connected to a ventilation frame, and the bottom of the ventilation frame is fixedly connected to a sponge layer. A servo motor is fixedly connected to the top of the connecting cylinder. The output end of the servo motor passes through the top of the connecting cylinder and is fixedly connected to a rotating rod. The bottom end of the rotating rod passes through the top of the sponge layer and is fixedly connected to a scraper. A drain pipe is connected to the left side of the outer wall of the air collection hood, and a storage component is provided at the bottom end of the drain pipe.

[0009] As a further description of the above technical solution:

[0010] The filter assembly includes a drying plate, which is fixedly connected to the inside of the filter cylinder, and an activated carbon plate is fixedly connected to the inside of the filter cylinder.

[0011] As a further description of the above technical solution:

[0012] The storage component includes a shrink tube connected to the bottom end of a drain pipe, and the bottom end of the shrink tube is connected to a storage box.

[0013] As a further description of the above technical solution:

[0014] The heating mechanism includes a heating box, which is fixedly connected to the bottom of the processing table, and a heater is fixedly connected to the left side of the heating box.

[0015] As a further description of the above technical solution:

[0016] The drive mechanism includes a second servo motor, which is fixedly connected to the top of the support frame. The output end of the second servo motor passes through the top of the support frame and is fixedly connected to a lead screw. The outer wall of the lead screw is threadedly connected to a lifting frame, and the front side of the lifting frame is fixedly connected to the rear side of the outer wall of the gas collection hood.

[0017] As a further description of the above technical solution:

[0018] The top of the processing table has multiple external openings and multiple internal openings.

[0019] As a further description of the above technical solution:

[0020] The clamping mechanism includes a screw, the bottom end of which is rotatably connected to the top of the processing table. An extrusion member is threadedly connected to the outer wall of the screw. The top of the processing table has multiple sliding grooves, and clamping plates are slidably connected to the top of each of the multiple sliding grooves. The extrusion member is rotatably connected to the multiple clamping plates.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, the heat-insulating shrink tube is used to seal the winding downwards. It is attracted to the processing table by a magnetic ring and a rubber ring is used to improve the sealing between the fixing ring and the processing table. The fan is started to inject gas into the heating box, and the winding is dried simultaneously inside and outside through the outer and inner ports. The hot air is drawn in and enters the circulation pipe through the filter tube. The fan blows the heat back into the interior of the heat-insulating shrink tube to achieve internal air circulation and drying.

[0023] 2. In this utility model, the extracted gas passes through the sponge layer and the ventilation frame. When the evaporated water vapor rises, it will absorb the moisture in the sponge layer. When the sponge layer absorbs excessive moisture, the servo motor drives the scraper to scrape off the moisture on the sponge layer and let it flow into the water collection tank on both sides. The moisture will enter the storage box through the drain pipe for storage. This can prevent a large amount of moisture from entering the equipment and affecting subsequent use. Attached Figure Description

[0024] Figure 1 This is a perspective view of the transformer winding constant pressure drying device proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the drive mechanism of the transformer winding constant pressure drying device proposed in this utility model;

[0026] Figure 3 This is a cross-sectional view of the transformer winding constant pressure drying device proposed in this utility model;

[0027] Figure 4 This is an exploded view of the transformer winding constant pressure drying device proposed in this utility model;

[0028] Figure 5 This is an exploded view of the clamping mechanism of the transformer winding constant pressure drying device proposed in this utility model.

[0029] Legend:

[0030] 1. Processing table; 2. Gas collection hood; 3. Circulation mechanism; 301. Heat insulation shrink tube; 302. Fixing ring; 303. Magnetic ring; 304. Rubber ring; 305. Filter cartridge; 306. Circulation pipe; 307. Connecting cover; 308. Fan; 309. Filter assembly; 3091. Drying plate; 3092. Activated carbon plate; 4. Connecting cylinder; 5. Dehumidification mechanism; 501. Water collection tank; 502. Ventilation frame; 503. Sponge layer; 504. Servo motor one; 505. Rotary... 506. Rod; 507. Scraper; 508. Drain pipe; 509. Storage component; 5081. Shrink tube; 5082. Storage box; 6. Heating mechanism; 601. Heater; 602. Heating box; 7. Support frame; 8. Drive mechanism; 801. Servo motor II; 802. Lead screw; 803. Lifting frame; 9. Outer opening; 10. Inner opening; 11. Reinforcing frame; 12. Clamping mechanism; 1201. Slide groove; 1202. Screw; 1203. Extrusion part; 1204. Clamping plate. Detailed Implementation

[0031] 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 protection scope of the present utility model.

[0032] Reference Figure 3 , Figure 4 and Figure 5 This utility model provides an embodiment of a transformer winding constant pressure drying device, including a processing table 1, a gas collecting hood 2, and a reinforcing frame 11. A support frame 7 is fixedly connected to the top rear side of the processing table 1. A connecting cylinder 4 is connected to the top of the gas collecting hood 2, and the gas collecting hood 2 and the connecting cylinder 4 are interconnected. A circulation mechanism 3 is provided at the bottom of the gas collecting hood 2. The circulation mechanism 3 can recover the discharged heat, realize heat recycling, and reduce energy waste. A dehumidification mechanism 5 is provided inside the gas collecting hood 2. The dehumidification mechanism 5 can collect and store the water vapor generated by evaporation, preventing water from entering the equipment and affecting the normal use of the equipment. A heating mechanism 6 is provided at the bottom of the processing table 1. A driving mechanism 8 is provided at the top of the support frame 7. The driving mechanism 8 can adjust the gas collecting hood 2 up and down to improve its applicability. A clamping mechanism 12 is provided at the top of the processing table 1. The clamping mechanism 12 can clamp the transformer winding group to prevent product deformation caused by drying.

[0033] The circulation mechanism 3 includes a heat-insulating shrink tube 301, which is connected to the bottom of the gas collecting hood 2. The heat-insulating shrink tube 301 has a shrinking and folding function and provides heat insulation, effectively preventing heat loss. A fixing ring 302 is fixedly connected to the bottom of the heat-insulating shrink tube 301, and a magnetic ring 303 is fixedly connected to the bottom of the fixing ring 302. A rubber ring 304 is fixedly connected to the bottom of the magnetic ring 303. The magnetic ring 303 can be attracted to the bottom of the processing table 1, and together with the rubber ring 304 at the bottom, it improves the sealing between the fixing ring 302 and the processing table 1, preventing gas leakage. The outer wall of the connecting tube 4 is connected to the right side of the connecting tube 4. A filter cartridge 305 is provided, and a circulation pipe 306 is connected to the right end of the filter cartridge 305. The drawn-in hot air enters the circulation pipe 306 through the filter cartridge 305. The bottom end of the circulation pipe 306 passes through the top of the processing table 1 and is connected to a connecting cover 307. A fan 308 is fixedly connected to the top of the connecting cover 307, and the fan 308 blows the heat back into the interior of the heat-insulating shrink cylinder 301 to achieve internal air circulation and drying. The heating mechanism 6 includes a heating box 602, which is fixedly connected to the bottom of the processing table 1. A heater 601 is fixedly connected to the left side of the heating box 602. After startup, the heating chamber 602 is heated to generate heat. The drive mechanism 8 includes a second servo motor 801, which is fixedly connected to the top of the support frame 7. The output end of the second servo motor 801 passes through the top of the support frame 7 and is fixedly connected to a lead screw 802. The outer wall of the lead screw 802 is threadedly connected to a lifting frame 803. The front side of the lifting frame 803 is fixedly connected to the rear side of the outer wall of the gas collection hood 2. When sealing the top of the processing table 1, the second servo motor 801 is started to drive the lead screw 802 to rotate, thereby driving the gas collection hood 2 to move up and down through the lifting frame 803. The top of the processing table 1 has multiple external openings 9 and multiple internal openings 10. By starting the fan 308, gas is injected into the heating box 602, and the winding is dried synchronously inside and outside through the external openings 9 and internal openings 10. The filter cylinder 305 is equipped with a filter assembly 309, which includes a drying plate 3091. The drying plate 3091 is fixedly connected to the inside of the filter cylinder 305, and an activated carbon plate 3092 is fixedly connected to the inside of the filter cylinder 305. During air circulation, the air can be filtered through the drying plate 3091 and the activated carbon plate 3092.

[0034] Specifically, the heat-insulating shrink tube 301 is connected to the bottom of the gas collecting hood 2. The heat-insulating shrink tube 301 not only has a shrinking and folding function but also excellent heat insulation, which helps to effectively prevent heat loss. A fixing ring 302 is connected to the bottom of the heat-insulating shrink tube 301, and a magnetic ring 303 is fixed to the bottom of the fixing ring 302. The magnetic ring 303 is wrapped by a rubber ring 304, allowing it to adhere to the bottom of the processing table 1. The rubber ring 304 at the bottom further improves the sealing between the fixing ring 302 and the processing table 1, effectively preventing gas leakage. A filter tube 305 is connected to the right side of the outer wall of the connecting tube 4, and a circulation pipe 306 is connected to the right end of the filter tube 305. The inhaled hot air will pass through the filter tube 306. The filter cartridge 305 enters the circulation pipe 306, and the heat is blown back into the interior of the heat-insulating shrink cylinder 301 by the fan 308 to achieve internal air circulation and drying. After the heater 601 is started, it heats the interior of the heating box 602 to generate heat. When sealing the top of the processing table 1, the servo motor 801 is started to drive the lead screw 802 to rotate, thereby driving the air collection hood 2 to be adjusted up and down through the lifting frame 803. The fan 308 is started to inject gas into the heating box 602, and the winding is dried synchronously inside and outside through the outer port 9 and the inner port 10. During air circulation, the air can be filtered through the drying plate 3091 and the activated carbon plate 3092 to ensure the cleanliness of the air.

[0035] Reference Figure 1 , Figure 2 and Figure 3The dehumidification mechanism 5 includes a water collection tank 501, which is fixedly connected to the bottom inner side of the air collection hood 2. A ventilation frame 502 is connected to the top inner side of the air collection hood 2. A sponge layer 503 is fixedly connected to the bottom of the ventilation frame 502. The sponge layer 503 is laid on the ventilation frame 502. The extracted gas passes through the sponge layer 503 and the ventilation frame 502. When the evaporated water vapor rises, it absorbs the moisture through the sponge layer 503. When the sponge layer 503 absorbs excessive moisture, a servo motor 504 is fixedly connected to the top of the connecting cylinder 4. The output end of the servo motor 504 passes through the top of the connecting cylinder 4 and is fixedly connected to a rotating rod 505. The bottom end of 05 penetrates the top of the sponge layer 503 and is fixedly connected to a scraper 506. By starting the servo motor 504, the scraper 506 is driven to scrape off the water on the sponge layer 503 and flow into the water collection tank 501 on both sides. The outer wall of the air collection hood 2 is connected to a drain pipe 507 on the left side. The bottom end of the drain pipe 507 is provided with a storage component 508. The storage component 508 includes a shrink tube 5081. The shrink tube 5081 is connected to the bottom end of the drain pipe 507. The bottom end of the shrink tube 5081 is connected to a storage box 5082. Water will enter the storage box 5082 through the drain pipe 507 for storage. The shrink tube 5081 can play an extension effect.

[0036] Specifically, the water collection tank 501 is installed at the bottom inner side of the air collection hood 2, and the top inner side of the air collection hood 2 is connected to the ventilation frame 502. The sponge layer 503 is laid on the ventilation frame 502 so that the extracted gas can pass through the sponge layer 503 and the ventilation frame 502. When the evaporated water vapor rises, it will pass through the sponge layer 503. The sponge layer 503 can effectively absorb the moisture in the rising water vapor. When the sponge layer 503 absorbs excessive moisture, the servo motor 504 is activated to drive the scraper 506 to scrape off the moisture on the sponge layer 503, so that the moisture can flow into the water collection tank 501 on both sides. In addition, the shrink tube 5081 is connected to the bottom end of the drain pipe 507, so that the moisture can enter the storage box 5082 for storage through the drain pipe 507. The design of the shrink tube 5081 can extend the length, thereby providing a more flexible and efficient moisture collection and storage function for the entire dehumidification mechanism 5.

[0037] Reference Figure 1 , Figure 2 and Figure 5 The clamping mechanism 12 includes a screw 1202, the bottom end of which is rotatably connected to the top of the processing table 1. An extrusion member 1203 is threadedly connected to the outer wall of the screw 1202. Multiple sliding grooves 1201 are provided on the top of the processing table 1. Clamping plates 1204 are slidably connected to the top of each of the multiple sliding grooves 1201. The extrusion member 1203 is rotatably connected to the multiple clamping plates 1204.

[0038] Specifically, the clamping mechanism 12 includes a screw 1202. The bottom end of the screw 1202 is rotatably connected to the top of the processing table 1. The screw 1202 is tightly connected to the extruder 1203. Multiple slide grooves 1201 are formed on the top of the processing table 1. Clamping plates 1204 are connected to the top of the slide grooves 1201. The extruder 1203 and these clamping plates 1204 are rotatably connected to each other. The winding is placed on the outside of the clamping plates 1204, and the screw 1202 is rotated to drive the extruder 1203 to slide downward. The extruder 1203 presses the clamping plates 1204 on the surrounding area outward, thereby fixing the winding and preventing deformation.

[0039] Working principle: First, the winding is placed on the outside of the clamping plate 1204, and the screw 1202 is rotated to drive the extruder 1203 to slide downward. The clamping plate 1204 fixes the winding. When sealing the top of the processing table 1, the servo motor 801 is started to drive the lead screw 802 to rotate, thereby driving the gas collection hood 2 to be adjusted up and down through the lifting frame 803. The heat insulation shrink cylinder 301 is lowered and adsorbed to the bottom of the processing table 1 through the magnetic ring 303. The rubber ring 304 improves the sealing between the fixing ring 302 and the processing table 1. After the heater 601 is started, the inside of the heating box 602 is heated. The fan 308 is started to inject gas into the heating box 602, and the winding is dried synchronously inside and outside through the outer port 9 and the inner port 10. The hot air is drawn in and enters the circulation pipe 306 through the filter 305, and the heat is blown back into the inside of the heat insulation shrink cylinder 301 by the fan 308.

[0040] Furthermore, the extracted gas passes through the sponge layer 503 and the ventilation frame 502. When the evaporated water vapor rises, it will absorb the moisture in the sponge layer 503. When the sponge layer 503 absorbs excessive moisture, the servo motor 504 is activated to drive the scraper 506 to scrape off the moisture on the sponge layer 503 and let it flow into the water collection tank 501 on both sides. The moisture will enter the storage box 5082 through the drain pipe 507 for storage.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A transformer winding constant pressure drying device, comprising a processing table (1), a gas collecting hood (2), and a reinforcing frame (11), characterized in that: A support frame (7) is fixedly connected to the top rear side of the processing table (1), a connecting cylinder (4) is connected to the top of the gas collection hood (2), a circulation mechanism (3) is provided at the bottom of the gas collection hood (2), a dehumidification mechanism (5) is provided on the inner side of the gas collection hood (2), a heating mechanism (6) is provided at the bottom of the processing table (1), a driving mechanism (8) is provided at the top of the support frame (7), and a clamping mechanism (12) is provided at the top of the processing table (1). The circulation mechanism (3) includes a heat-insulating shrink tube (301), which is connected to the bottom of the gas collection hood (2). A fixing ring (302) is fixedly connected to the bottom of the heat-insulating shrink tube (301), and a magnetic ring (303) is fixedly connected to the bottom of the fixing ring (302). A rubber ring (304) is fixedly connected to the bottom of the magnetic ring (303). A filter tube (305) is connected to the right side of the outer wall of the connecting tube (4). A circulation pipe (306) is connected to the right end of the filter tube (305). The bottom end of the circulation pipe (306) passes through the top of the processing table (1) and is connected to a connecting cover (307). A fan (308) is fixedly connected to the top of the connecting cover (307). A filter assembly (309) is provided inside the filter tube (305).

2. The transformer winding constant pressure drying device according to claim 1, characterized in that: The dehumidification mechanism (5) includes a water collection tank (501), which is fixedly connected to the bottom of the inner side of the air collection hood (2). The top of the inner side of the air collection hood (2) is connected to a ventilation frame (502). The bottom of the ventilation frame (502) is fixedly connected to a sponge layer (503). The top of the connecting cylinder (4) is fixedly connected to a servo motor (504). The output end of the servo motor (504) passes through the top of the connecting cylinder (4) and is fixedly connected to a rotating rod (505). The bottom end of the rotating rod (505) passes through the top of the sponge layer (503) and is fixedly connected to a scraper (506). The left side of the outer wall of the air collection hood (2) is connected to a drain pipe (507). The bottom end of the drain pipe (507) is provided with a storage component (508).

3. The transformer winding constant pressure drying device according to claim 1, characterized in that: The filter assembly (309) includes a drying plate (3091), which is fixedly connected to the inside of the filter cylinder (305), and an activated carbon plate (3092) is fixedly connected to the inside of the filter cylinder (305).

4. The transformer winding constant pressure drying device according to claim 2, characterized in that: The storage component (508) includes a shrink tube (5081) connected to the bottom end of a drain pipe (507), and the bottom end of the shrink tube (5081) is connected to a storage box (5082).

5. The transformer winding constant pressure drying device according to claim 1, characterized in that: The heating mechanism (6) includes a heating box (602), which is fixedly connected to the bottom of the processing table (1), and a heater (601) is fixedly connected to the left side of the heating box (602).

6. The transformer winding constant pressure drying device according to claim 1, characterized in that: The drive mechanism (8) includes a second servo motor (801), which is fixedly connected to the top of the support frame (7). The output end of the second servo motor (801) passes through the top of the support frame (7) and is fixedly connected to a lead screw (802). The outer wall of the lead screw (802) is threadedly connected to a lifting frame (803), and the front side of the lifting frame (803) is fixedly connected to the rear side of the outer wall of the gas collection hood (2).

7. The transformer winding constant pressure drying device according to claim 1, characterized in that: The top of the processing table (1) has multiple external openings (9) and multiple internal openings (10).

8. The transformer winding constant pressure drying device according to claim 1, characterized in that: The clamping mechanism (12) includes a screw (1202), the bottom end of which is rotatably connected to the top of the processing table (1). The outer wall of the screw (1202) is threaded with an extrusion piece (1203). The top of the processing table (1) is provided with multiple sliding grooves (1201), and the top of each of the multiple sliding grooves (1201) is slidably connected with a clamping plate (1204). The extrusion piece (1203) is rotatably connected to the multiple clamping plates (1204).

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