A transformer winding drying constant voltage device

Abstract

The invention discloses a transformer winding drying constant pressure device, which relates to the technical field of transformers and comprises a fixed bracket, a fixed sleeve is installed at the middle position of the top of the fixed bracket, a vacuum drying tank is welded to one end face of the fixed sleeve, a bearing is embedded at one end of the inner side of the fixed sleeve, a rotating motor is installed at the other end of the inner side of the fixed sleeve, a rotating column is embedded at the inner side of the bearing, a connecting plate is welded at the outer side of the rotating column, a fixed rod is rotatably installed at the inner side of the connecting plate, and a mounting groove plate is welded at the inner side of the fixed rod. The invention has a scientific and reasonable structure and is safe and convenient to use. When adding a new winding, the interior of the vacuum drying tank will not contact with the external air, which prevents the vacuum drying tank from losing pressure and reduces the energy consumption of the vacuum pump constantly starting and stopping. It can also prevent external humid air from entering the interior of the vacuum drying tank, thereby ensuring the drying efficiency of the winding.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, in particular to a transformer winding drying constant voltage device. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. Its main components are the primary coil, the secondary coil and the iron core. The main functions of the transformer are: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization, etc. The transformer winding is the core component of the transformer. During the production and processing of the transformer winding, it needs to be dried and constant pressure is applied to it to ensure the structural stability of the transformer winding, prevent gaps between the coils, and enable the transformer to operate stably. The Chinese patent discloses "a transformer winding drying constant pressure device", application number: 202410665090.X. In the process of pressing the transformer winding up and down, the patent can drive the bottom roller and the top roller to rotate back and forth on the top and bottom of the winding through the rotating frame and the top frame. In this way, the top and bottom stress points of the winding can be changed back and forth as much as possible, so that the winding is more evenly stressed. When pressing down, the side rollers will be linked to the side of the winding. When the bottom roller and the top roller roll the top and bottom of the winding, the side rollers also roll the side of the winding to ensure the flatness of the side of the winding, making the winding more compact.

[0003] However, during the drying process, the existing vacuum drying device needs to be vacuumed again each time a new batch of windings is placed, which not only wastes time and energy but also leads to extremely low winding drying efficiency. Moreover, each time a new winding is placed, external air will enter the drying device, further affecting the drying effect. In order to avoid the above technical problems, it is indeed necessary to provide a transformer winding drying constant pressure device to overcome the above defects in the prior art. Summary of the invention

[0004] The present invention provides a transformer winding drying constant pressure device, which can effectively solve the problem that the existing vacuum drying device proposed in the above background technology needs to be vacuumed again each time a new batch of windings is placed during the drying process, which not only wastes time and energy but also leads to extremely low winding drying efficiency. In addition, each time a new winding is placed, external air enters the drying device, further affecting the drying effect.

[0005] To achieve the above object, the present invention provides the following technical solutions: a transformer winding drying constant voltage device, comprising a fixed bracket, a drying constant voltage component is installed on the top of the fixed bracket;

[0006] The drying constant pressure assembly includes a fixed sleeve;

[0007] A fixed sleeve is installed at the middle position of the top of the fixed bracket, a vacuum drying tank is welded on one end surface of the fixed sleeve, a bearing is embedded in one end of the inner side of the fixed sleeve, and a rotating motor is installed at the other end of the inner side of the fixed sleeve;

[0008] A rotating column is embedded in the inner side of the bearing, a connecting plate is welded on the outer side of the rotating column, a connecting plate is welded on the outer side of the connecting plate, a sliding groove plate is welded at the top position of one end surface of the connecting plate, a sliding plate is slidably installed on the inner side of the sliding groove plate, and a push rod is welded on the bottom end of the sliding plate;

[0009] A constant pressure clamping groove plate is welded to the top of the sliding plate, a sealing clamping groove plate is welded to the top of the constant pressure clamping groove plate, and a gas tank is welded at the middle position of the inner side of the constant pressure clamping groove plate;

[0010] A partition slot plate is welded to the outer end surface of the vacuum drying tank, a sealing slot is provided on one end surface of the partition slot plate, a sealing plate is clamped on the other end surface of the partition slot plate, a fixing slot is provided on one end surface of the sealing plate at a position corresponding to the partition slot plate, a suction branch pipe is connected to one end surface of the partition slot plate, and an electromagnetic control valve is installed on the outer side of the suction branch pipe.

[0011] According to the above technical solution, a fixing rod is rotatably mounted on the inner side of the connecting plate, and a mounting slot plate is welded on the inner side of the fixing rod;

[0012] Two rotating columns and two fixed sleeves are provided, and the two fixed sleeves are symmetrically installed on the two side end surfaces of the vacuum drying tank. One end of the fixed rod is rotatably connected to one of the rotating columns, and the other end of the fixed rod passes through the other rotating column and is welded to the fixed sleeve.

[0013] According to the above technical solution, a plurality of mounting slot plates are provided, and the plurality of mounting slot plates are equidistantly mounted on the inner side of the fixing rod, and an electric telescopic rod is mounted on the inner side of each of the mounting slot plates.

[0014] According to the above technical solution, an electric telescopic rod is embedded in the inner side of the mounting slot plate, a magnet is welded to the telescopic end of the electric telescopic rod, an extension rod is welded to one end of the fixed rod, a limiting cylinder is welded to one end face of the connecting plate, and a limiting spring is spot welded to the inner side of the limiting cylinder;

[0015] The gas outlet end of the gas tank is connected with a constant pressure groove cylinder, a constant pressure rod is slidably mounted on the inner side of the constant pressure groove cylinder, and a constant pressure plate is welded on one end surface of the constant pressure rod;

[0016] An air pump bracket is welded to one end surface of the fixed bracket, a vacuum pump is installed on the top of the air pump bracket, an air inlet end of the vacuum pump is connected to an air extraction pipe, and a one-way valve is installed on the outside of the air extraction pipe.

[0017] According to the above technical solution, one end of the air extraction branch pipe is connected to the air extraction pipe, and the input end of the electromagnetic control valve is electrically connected to the output end of the external controller.

[0018] According to the above technical solution, a movable groove is provided at a position corresponding to the limit spring on one end surface of the connecting plate, and the limit spring passes through the movable groove and abuts against one end surface of the sliding plate.

[0019] According to the above technical solution, two groups of constant pressure groove cylinders are provided, and the two groups of constant pressure groove cylinders are symmetrically welded on the two side end faces of the gas tank, and the input ends of the rotating motor, electric telescopic rod and vacuum pump are electrically connected to the output end of the external controller.

[0020] According to the above technical solution, a moisture absorbing component is installed on one side of the fixed bracket;

[0021] The moisture absorbing assembly includes a lubricating oil box;

[0022] A lubricating oil box is provided on one side of the fixed bracket, an oil cavity is provided on the inner side of the lubricating oil box, a supporting groove plate is welded on the inner side of the oil cavity, a sponge is bonded to the top of the supporting groove plate, an oil filling groove plate is welded on one end face of the lubricating oil box, an oil filling port is provided at a position corresponding to the end face of the lubricating oil box and the oil filling groove plate, an oil drain groove is provided on the bottom end of the lubricating oil box, an oil drain pipe is welded at a position corresponding to the bottom end of the lubricating oil box and the oil drain groove, and an oil outlet control valve is installed on the outer side of the oil drain pipe;

[0023] Resistance heating rods are installed at equal angles on the inner wall of the vacuum drying canister, an exhaust groove is opened at the top position of the outer side of the vacuum drying canister, a moisture absorption groove plate is welded at the position of the outer side of the vacuum drying canister corresponding to the exhaust groove, a fixed threaded tube is welded to the outer side of the vacuum drying canister, a positioning groove plate is clamped on the outer side of the moisture absorption groove plate, a limiting connecting cylinder is welded on the outer side of the positioning groove plate, a fixing screw is slidably installed on the inner side of the limiting connecting cylinder, a rubber sealing plate is embedded in the inner bottom of the positioning groove plate, a positioning groove is opened on the inner side of the moisture absorption groove plate, a magnetic card block is adsorbed on the inner side of the moisture absorption groove plate, a silica gel drying bag is embedded in the inner side of the magnetic card block, and a handle is welded on the top of the magnetic card block.

[0024] According to the above technical solution, the limiting connecting tube is welded to the outer side of the positioning slot plate at a position corresponding to the fixed threaded tube, and the fixed screw passes through the limiting connecting tube and is threadedly connected to the fixed threaded tube.

[0025] According to the above technical solution, two magnetic card blocks are provided, and the two magnetic card blocks are symmetrically installed on the inner side of the moisture absorption slot plate, and the input end of the resistance heating rod is electrically connected to the output end of the external controller.

[0026] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0027] 1. A drying constant pressure component is provided. When a large number of new windings are manufactured, an empty constant pressure clamping slot plate is clamped with the partition slot plate, the new winding is clamped to the inner side of the constant pressure clamping slot plate, and then the sealing plate is clamped to the outer side of the partition slot plate. Then the electromagnetic control valve is opened to evacuate the space inside the partition slot plate into a vacuum state. At this time, as the interior of the partition slot plate becomes a vacuum state, the sealing plate will be continuously pressed against one side end face of the partition slot plate by the external air. Then the electric telescopic rod is controlled to retract to pull the new winding to the inner side of the vacuum drying tank for vacuum drying and constant pressure. When adding a new winding, the interior of the vacuum drying tank will not contact with the external air, which prevents the vacuum drying tank from losing pressure and reduces the energy consumption of the vacuum pump constantly starting and stopping. It can also prevent external humid air from entering the interior of the vacuum drying tank, thereby ensuring the drying efficiency of the winding;

[0028] Because the interior of the vacuum drying tank is in a vacuum state, the air pressure inside the gas tank will be greater than the pressure inside the vacuum drying tank. The air pressure inside the gas tank will push the constant pressure rod to slide on the inside of the constant pressure groove cylinder. At this time, the constant pressure plate can be driven to continuously apply pressure to the winding inside the constant pressure clamping groove plate, so that the winding is continuously in a constant pressure state during the drying process. The winding is dried while being compacted at constant pressure, so that the space where moisture originally existed in the winding is quickly filled with the coil after the moisture evaporates, and applying constant pressure during the drying process can prevent the wire from stretching and prevent the winding from loosening outward, thereby affecting the quality of the winding, further improving the drying effect and overall quality of the winding.

[0029] 2. A desiccant assembly is provided, and the silica gel drying bag will continuously absorb moisture from the inside of the vacuum drying tank, thereby ensuring that the external humid air will not invade the space inside the vacuum drying tank. After a period of use, the operator can loosen the fixing screw so that the fixing screw can be loosened from the inside of the fixed threaded tube, and then the operator can remove the positioning slot plate from the top of the desiccant slot plate, and then the operator can remove the rubber sealing plate first, and then use the handle to take out the magnetic card block and the internal silica gel drying bag, and then the silica gel drying bag can be replaced to ensure the drying efficiency.

[0030] To summarize, the side of the sealing plate with the fixed groove is placed on the inner side of the bottom lubricating oil box. At this time, the lubricating oil inside the sponge will be evenly applied to the inner side of the fixed groove, and the gap between the fixed groove and the partition slot plate can be filled with the lubricating oil. Subsequently, each time the sealing plate is snapped onto the outer side of the partition slot plate, the sealing effect can be guaranteed, further preventing external moist air from entering the interior of the vacuum drying tank, thereby further improving the drying constant pressure effect of the winding, thereby ensuring that the transformer can work stably and continuously during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0032] In the attached picture:

[0033] Figure 1 It is a schematic diagram of the structure of the present invention;

[0034] Figure 2 It is a schematic diagram of the installation structure of the fixed sleeve of the present invention;

[0035] Figure 3 It is a schematic diagram of the installation structure of the bearing of the present invention;

[0036] Figure 4 It is a structural schematic diagram of the drying constant pressure assembly of the present invention;

[0037] Figure 5 It is a schematic diagram of the installation structure of the push rod of the present invention;

[0038] Figure 6 It is a schematic diagram of the installation structure of the gas tank of the present invention;

[0039] Figure 7 It is a schematic diagram of the installation structure of the constant pressure rod of the present invention;

[0040] Figure 8 It is a schematic diagram of the installation structure of the sealing plate of the present invention;

[0041] Fig. 9 It is a schematic diagram of the installation structure of the air extraction branch pipe of the present invention;

[0042] Fig.10 It is a schematic diagram of the installation structure of the sponge of the present invention;

[0043] Fig.11 It is a schematic diagram of the structure of the moisture absorption component of the present invention;

[0044] Fig.12 It is a schematic diagram of the installation structure of the silica gel drying bag of the present invention;

[0045] Numbers in the figure: 1. Fixed bracket;

[0046] 2. Drying constant pressure assembly; 201. Fixed sleeve; 202. Vacuum drying tank; 203. Bearing; 204. Rotating motor; 205. Rotating column; 206. Connecting plate; 207. Fixed rod; 208. Mounting slot plate; 209. Electric telescopic rod; 210. Magnet; 211. Extension rod; 212. Connecting plate; 213. Sliding slot plate; 214. Sliding plate; 215. Push rod; 216. Limiting cylinder; 217. Limit spring; 218, constant pressure clamping groove plate; 219, sealing clamping groove plate; 220, gas tank; 221, constant pressure groove cylinder; 222, constant pressure rod; 223, constant pressure plate; 224, partition groove plate; 225, sealing clamping groove; 226, sealing plate; 227, fixing groove; 228, air extraction branch pipe; 229, electromagnetic control valve; 230, air pump bracket; 231, vacuum pump; 232, air extraction pipe; 233, one-way valve;

[0047] 3. Desiccant assembly; 301. Lubricating oil box; 302. Oil chamber; 303. Support slot plate; 304. Sponge; 305. Oil filling slot plate; 306. Oil filling port; 307. Oil drain slot; 308. Oil drain pipe; 309. Oil outlet control valve; 310. Resistance heating rod; 311. Exhaust slot; 312. Desiccant slot plate; 313. Fixed threaded pipe; 314. Positioning slot plate; 315. Limiting connecting cylinder; 316. Fixed screw; 317. Rubber sealing plate; 318. Positioning card slot; 319. Magnetic card block; 320. Silica gel drying bag; 321. Handle. DETAILED DESCRIPTION

[0048] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0049] Example: Figure 1-12 As shown, the present invention provides a technical solution, a transformer winding drying constant voltage device, comprising a fixed bracket 1, a drying constant voltage component 2 is installed on the top of the fixed bracket 1;

[0050] The drying constant pressure assembly 2 includes a fixed sleeve 201, a vacuum drying tank 202, a bearing 203, a rotating motor 204, a rotating column 205, a connecting plate 206, a fixing rod 207, a mounting slot plate 208, an electric telescopic rod 209, a magnet 210, an extension rod 211, a connecting plate 212, a sliding slot plate 213, a sliding plate 214, a pushing rod 215, a limiting cylinder 216, a limiting spring 217, a constant pressure clamping slot plate 218, a sealing clamping slot plate 219, a gas tank 220, a constant pressure slot cylinder 221, a constant pressure rod 222, a constant pressure plate 223, a partition slot plate 224, a sealing clamping groove 225, a sealing plate 226, a fixing groove 227, an exhaust branch pipe 228, an electromagnetic control valve 229, an air pump bracket 230, a vacuum exhaust pump 231, an exhaust pipe 232 and a one-way valve 233;

[0051] A fixed sleeve 201 is installed at the middle position of the top of the fixed bracket 1, and a vacuum drying tank 202 is welded to one end face of the fixed sleeve 201. A bearing 203 is embedded in one end of the inner side of the fixed sleeve 201, and a rotating motor 204 is installed at the other end of the inner side of the fixed sleeve 201. A rotating column 205 is embedded in the inner side of the bearing 203, and a connecting plate 206 is welded on the outer side of the rotating column 205. A fixed rod 207 is rotatably installed on the inner side of the connecting plate 206, and a mounting slot plate 208 is welded on the inner side of the fixed rod 207. An electric telescopic rod 209 is embedded in the inner side of the mounting slot plate 208. There are several mounting slot plates 208, and several mounting slot plates 208 are equidistantly installed on the inner side of the fixed rod 207. Electric telescopic rods 209 are installed on the inner sides of the mounting slot plates 208 to facilitate uniform force. A magnet 210 is welded at the telescopic end of the electric telescopic rod 209, and an extension rod 211 is welded at one end of the fixed rod 207.

[0052] A connecting plate 212 is welded to the outer side of the connecting disk 206, a sliding groove plate 213 is welded at the top position of one side end surface of the connecting plate 212, a sliding plate 214 is slidably installed on the inner side of the sliding groove plate 213, and a pushing rod 215 is welded at the bottom end of the sliding plate 214. There are two rotating columns 205 and fixed sleeves 201, and the two fixed sleeves 201 are symmetrically installed on the two side end surfaces of the vacuum drying tank 202. One end of the fixed rod 207 is rotatably connected to one of the rotating columns 205, and the other end of the fixed rod 207 passes through another rotating column 205 and is welded to the fixed sleeve 201, which is conducive to quickly moving the pushing rod 215. A limiting cylinder 216 is welded to one side end surface of the connecting plate 212, and a limiting spring 217 is spot-welded on the inner side of the limiting cylinder 216. A movable groove is opened at the position corresponding to the limiting spring 217 on one side end surface of the connecting plate 212. The limiting spring 217 passes through the movable groove and abuts against one side end surface of the sliding plate 214, which is conducive to fixing the sliding plate 214;

[0053] A constant pressure clamping groove plate 218 is welded to the top of the sliding plate 214, a sealing clamping groove plate 219 is welded to the top of the constant pressure clamping groove plate 218, a gas tank 220 is welded at the middle position of the inner side of the constant pressure clamping groove plate 218, a constant pressure groove cylinder 221 is connected to the gas outlet end of the gas tank 220, a constant pressure rod 222 is slidably installed on the inner side of the constant pressure groove cylinder 221, and a constant pressure plate 223 is welded to one end face of the constant pressure rod 222;

[0054] A partition slot plate 224 is welded to the outer end face of the vacuum drying tank 202, a sealing slot 225 is provided on one side end face of the partition slot plate 224, a sealing plate 226 is clamped on the other side end face of the partition slot plate 224, a fixing slot 227 is provided on one side end face of the sealing plate 226 at a position corresponding to the partition slot plate 224, a suction branch pipe 228 is connected to one side end face of the partition slot plate 224, an electromagnetic control valve 229 is installed on the outer side of the suction branch pipe 228, two groups of constant pressure slot cylinders 221 are provided, and the two groups of constant pressure slot cylinders 221 are symmetrically welded to the two side end faces of the gas tank 220, the input ends of the rotating motor 204, the electric telescopic rod 209 and the vacuum suction pump 231 are electrically connected to the output end of the external controller, which is convenient for the constant voltage winding.

[0055] An air pump bracket 230 is welded to one end face of the fixed bracket 1, and a vacuum pump 231 is installed on the top of the air pump bracket 230. The air inlet end of the vacuum pump 231 is connected to an exhaust pipe 232, and a one-way valve 233 is installed on the outside of the exhaust pipe 232. One end of the exhaust branch pipe 228 is connected to the exhaust pipe 232, and the input end of the electromagnetic control valve 229 is electrically connected to the output end of the external controller to facilitate vacuuming.

[0056] A moisture absorbing component 3 is installed on one side of the fixed bracket 1;

[0057] The moisture absorption component 3 includes a lubricating oil box 301, an oil cavity 302, a supporting slot plate 303, a sponge 304, an oil filling slot plate 305, an oil filling port 306, an oil drain slot 307, an oil drain pipe 308, an oil outlet control valve 309, a resistance heating rod 310, an exhaust slot 311, a moisture absorption slot plate 312, a fixed threaded tube 313, a positioning slot plate 314, a limit connecting cylinder 315, a fixed screw 316, a rubber sealing plate 317, a positioning card slot 318, a magnetic card block 319, a silica gel drying bag 320 and a handle 321;

[0058] A lubricating oil box 301 is provided on one side of the fixed bracket 1, an oil chamber 302 is provided on the inner side of the lubricating oil box 301, a supporting groove plate 303 is welded on the inner side of the oil chamber 302, a sponge 304 is bonded to the top of the supporting groove plate 303, an oil filling groove plate 305 is welded on one end face of the lubricating oil box 301, an oil filling port 306 is provided at a position corresponding to the end face of one side of the lubricating oil box 301 and the oil filling groove plate 305, an oil drain groove 307 is provided at the bottom end of the lubricating oil box 301, an oil drain pipe 308 is welded at a position corresponding to the bottom end of the lubricating oil box 301 and the oil drain groove 307, and an oil outlet control valve 309 is installed on the outer side of the oil drain pipe 308;

[0059] A resistance heating rod 310 is installed at an equal angle on the inner wall of the vacuum drying tank 202, an exhaust groove 311 is opened at the top position of the outer side of the vacuum drying tank 202, a moisture absorption groove plate 312 is welded at the outer side of the vacuum drying tank 202 corresponding to the exhaust groove 311, a fixed threaded tube 313 is welded to the outer side of the vacuum drying tank 202, a positioning groove plate 314 is clamped on the outer side of the moisture absorption groove plate 312, a limiting connection cylinder 315 is welded on the outer side of the positioning groove plate 314, a fixing screw 316 is slidably installed on the inner side of the limiting connection cylinder 315, the limiting connection cylinder 315 is welded to the outer side of the positioning groove plate 314 at the corresponding position of the fixed threaded tube 313, and the fixing screw 316 is inserted through the fixing screw 316. The over-limit connecting cylinder 315 is threadedly connected to the fixed threaded tube 313, which is convenient for improving the sealing. A rubber sealing plate 317 is embedded in the inner bottom of the positioning groove plate 314, and a positioning slot 318 is opened on the inner side of the moisture absorption groove plate 312. A magnetic card block 319 is adsorbed on the inner side of the moisture absorption groove plate 312, and a silica gel drying bag 320 is embedded on the inner side of the magnetic card block 319. Two magnetic card blocks 319 are provided, and the two magnetic card blocks 319 are symmetrically installed on the inner side of the moisture absorption groove plate 312. The input end of the resistance heating rod 310 is electrically connected to the output end of the external controller, which is conducive to the quick replacement of the silica gel drying bag 320, and a handle 321 is welded on the top of the magnetic card block 319.

[0060] The working principle and use process of the present invention are as follows: First, after the winding of the transformer is manufactured, the operator can move the winding to one side of the vacuum drying tank 202, located at the bottom of the partition slot plate 224, and then control the rotating motor 204 inside the fixed sleeve 201 to start;

[0061] At this time, the rotating motor 204 will drive the rotating column 205 inside the bearing 203 to rotate, and the connecting plate 206 can be driven to rotate through the rotating column 205, and then the connecting plate 212 can be driven to rotate through the connecting plate 206, so that the top constant pressure clamping slot plate 218 can be rotated inside the vacuum drying tank 202 at the same time, and then the constant pressure clamping slot plate 218 can be rotated toward the partition slot plate 224. After the constant pressure clamping slot plate 218 is aligned with the partition slot plate 224, several electric telescopic rods 209 on the inner side of the fixed rod 207 are controlled to extend at the same time, so that the extension of the electric telescopic rod 209 can drive the magnet 210 to move to the position of the push rod 215. When the magnet 210 contacts the push rod 215, the push rod 215 will be adsorbed by the magnet 210;

[0062] When the push rod 215 is fixed with the magnet 210, the electric telescopic rod 209 is controlled to continue to extend, and the push rod 215 will push the sliding plate 214 to slide on the inner side of the sliding slot plate 213, and then the sliding plate 214 will drive the constant pressure clamping slot plate 218 to move, so that the constant pressure clamping slot plate 218 can be pushed to continue to move to the position of the partition slot plate 224. During the movement, the limit spring 217 inside the limit cylinder 216 will apply pressure to the sliding plate 214 at any time, so that the sliding plate 214 can stay at any position inside the sliding slot plate 213;

[0063] During the continuous movement, the sealing card slot plate 219 at the top of the constant pressure card slot plate 218 will be inserted into the sealing card slot 225 on one side of the partition slot plate 224, so as to connect the constant pressure card slot plate 218 with the partition slot plate 224. At this time, the constant pressure card slot plate 218 and the sealing card slot plate 219 will seal the end surface of the partition slot plate 224 on one side of the vacuum drying tank 202;

[0064] Then the operator can remove the sealing plate 226 from the outer side of the partition slot plate 224, and then the operator can embed the winding into the inner side of the constant pressure clamping slot plate 218, so that it is initially pressed and fixed by the constant pressure plate 223. After the windings at both ends of the inner side of the constant pressure clamping slot plate 218 are fixed, the sealing plate 226 is clamped to the outer side of the partition slot plate 224 through the fixing groove 227 again, so that the end face of one side of the partition slot plate 224 located outside the vacuum drying tank 202 is sealed and fixed by the sealing plate 226;

[0065] Then, the vacuum pump 231 at the top of the air pump bracket 230 is turned on, so that the interior of the vacuum drying tank 202 and the interior of the partition slot plate 224 can be evacuated at the same time through the exhaust pipe 232 and the exhaust branch pipe 228. After the vacuum pump 231 has been working for a period of time, the interior of the vacuum drying tank 202 and the interior of the partition slot plate 224 are both in a vacuum state. At this time, the electric telescopic rod 209 can be controlled to retract, so that the magnet 210 can be retracted by the electric telescopic rod 209. When the constant pressure clamping slot plate 218 is retracted to the initial position, the electric telescopic rod 209 is controlled to continue to retract, so that the magnet 210 and the push rod 215 can be pulled apart and separated. At this time, the constant pressure clamping slot plate 218 and the internal winding can be pulled into the interior of the vacuum drying tank 202. At this time, the winding will be in a vacuum state, and the water can be evaporated more quickly in the vacuum state, so that the winding can be continuously dried.

[0066] And because the interior of the vacuum drying tank 202 is in a vacuum state, the air pressure inside the gas tank 220 will be greater than the pressure inside the vacuum drying tank 202, and the air pressure inside the gas tank 220 will push the constant pressure rod 222 to slide on the inner side of the constant pressure groove cylinder 221, and at this time, the constant pressure plate 223 can be driven to continuously apply pressure to the winding inside the constant pressure clamping groove plate 218, so that the winding is continuously in a constant pressure state during the drying process, and the winding is dried while being compressed at a constant pressure, so that the space where the water originally existed in the winding is quickly filled with the coil after the water evaporates, and applying a constant pressure during the drying process can prevent the wire from stretching and prevent the winding from loosening outward, thereby affecting the quality of the winding, and further improving the drying effect and overall quality of the winding;

[0067] Furthermore, when constant pressure drying is performed, a large number of windings will be manufactured. At this time, when adding a new winding, an empty constant pressure snap-in slot plate 218 is rotated to one side of the partition slot plate 224, and then the constant pressure snap-in slot plate 218 is snap-fitted to the partition slot plate 224. At this time, the internal space of the vacuum drying tank 202 will be separated from the space inside the partition slot plate 224. Then the operator can remove the sealing plate 226. At this time, the outside air will not enter the inside of the vacuum drying tank 202. Then the operator can snap the new winding to the inside of the constant pressure snap-in slot plate 218, and then snap the sealing plate 226 to the outside of the partition slot plate 224, and then turn on the electromagnetic control. The valve 229 thus draws the space inside the partition slot plate 224 into a vacuum state. At this time, as the partition slot plate 224 becomes a vacuum state, the sealing plate 226 is continuously pressed against one side end surface of the partition slot plate 224 by the external air. Then, the electric telescopic rod 209 is controlled to retract so as to pull the new winding to the inside of the vacuum drying tank 202 for vacuum drying and constant pressure. When adding a new winding, the inside of the vacuum drying tank 202 will not come into contact with the external air, which prevents the vacuum drying tank 202 from losing pressure, reduces the energy consumption of the vacuum pump 231 that is constantly started and stopped, and prevents external humid air from entering the inside of the vacuum drying tank 202, thereby ensuring the drying efficiency of the winding.

[0068] Then, when the vacuum drying tank 202 is dried, all the resistance heating rods 310 are turned on to heat and dry the internal windings, and when the vacuum drying tank 202 is not used to dry the windings, the silica gel drying bag 320 will continue to absorb moisture from the inside of the vacuum drying tank 202, thereby ensuring that the external humid air will not invade the space inside the vacuum drying tank 202, and after a period of use, the operator can loosen the fixing screw 316 so that the fixing screw 316 can be loosened from the inside of the fixing threaded tube 313, and then the operator can remove the positioning slot plate 314 from the top of the moisture absorption slot plate 312, and then the operator can remove the rubber sealing plate 317 first, and then take out the magnetic card block 319 and the internal silica gel drying bag 320 through the handle 321, and then the silica gel drying bag 320 can be replaced, thereby ensuring the drying efficiency;

[0069] And each time the sealing plate 226 is removed from one side of the partition slot plate 224, the side of the sealing plate 226 with the fixed groove 227 is placed on the inner side of the bottom lubricating oil box 301. At this time, the lubricating oil inside the sponge 304 will be evenly applied to the inner side of the fixed groove 227, and the gap between the fixed groove 227 and the partition slot plate 224 can be filled with the lubricating oil. Subsequently, each time the sealing plate 226 is snapped onto the outer side of the partition slot plate 224, the sealing effect can be ensured. The oil outlet control valve 309 can be opened every once in a while to Expired lubricating oil can be discharged through the oil drain groove 307 and the oil drain pipe 308, and after closing the oil outlet control valve 309, new lubricating oil can be added to the inner side of the oil chamber 302 through the oil filling groove plate 305 and the oil filling port 306, thereby ensuring the sealing effect of the lubricating oil, and then ensuring the sealing effect of the sealing plate 226, further preventing external humid air from entering the interior of the vacuum drying tank 202, thereby further improving the drying constant pressure effect of the winding, thereby ensuring that the transformer can work stably and continuously during long-term use.

[0070] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A transformer winding drying constant pressure device, comprising a fixed bracket (1), characterized in that: A drying constant pressure assembly (2) is installed at the top end of the fixed bracket (1); The drying constant pressure assembly (2) comprises a fixed sleeve (201); A fixed sleeve (201) is installed at the middle position of the top end of the fixed bracket (1); a vacuum drying tank (202) is welded to one end surface of the fixed sleeve (201); a bearing (203) is embedded in one inner end of the fixed sleeve (201); and a rotating motor (204) is installed at the other inner end of the fixed sleeve (201); A rotating column (205) is embedded inside the bearing (203), a connecting disk (206) is welded to the outside of the rotating column (205), a connecting plate (212) is welded to the outside of the connecting disk (206), a sliding groove plate (213) is welded at the top position of one end surface of the connecting plate (212), a sliding plate (214) is slidably mounted inside the sliding groove plate (213), and a push rod (215) is welded to the bottom end of the sliding plate (214); A constant-pressure snap-fit ​​groove plate (218) is welded to the top end of the sliding plate (214), a sealing snap-fit ​​groove plate (219) is welded to the top end of the constant-pressure snap-fit ​​groove plate (218), and a gas tank (220) is welded at the middle position of the inner side of the constant-pressure snap-fit ​​groove plate (218); A partition slot plate (224) is welded to the outer end surface of the vacuum drying tank (202); a sealing slot (225) is provided on one end surface of the partition slot plate (224); a sealing plate (226) is clamped on the other end surface of the partition slot plate (224); a fixing slot (227) is provided on one end surface of the sealing plate (226) at a position corresponding to the partition slot plate (224); a gas extraction branch pipe (228) is connected to one end surface of the partition slot plate (224); and an electromagnetic control valve (229) is installed on the outer side of the gas extraction branch pipe (228).

2. A transformer winding drying constant voltage device according to claim 1, characterized in that: A fixing rod (207) is rotatably mounted on the inner side of the connecting plate (206), and a mounting slot plate (208) is welded on the inner side of the fixing rod (207); Two rotating columns (205) and two fixed sleeves (201) are provided, and the two fixed sleeves (201) are symmetrically mounted on the end surfaces of both sides of the vacuum drying tank (202). One end of the fixed rod (207) is rotatably connected to one of the rotating columns (205), and the other end of the fixed rod (207) passes through the other rotating column (205) and is welded to the fixed sleeve (201).

3. A transformer winding drying constant voltage device according to claim 2, characterized in that: A plurality of the mounting slot plates (208) are provided, and the plurality of mounting slot plates (208) are equidistantly mounted on the inner side of the fixing rod (207), and an electric telescopic rod (209) is mounted on the inner side of each of the mounting slot plates (208).

4. A transformer winding drying constant voltage device according to claim 2, characterized in that: An electric telescopic rod (209) is embedded inside the mounting slot plate (208), a magnet (210) is welded to the telescopic end of the electric telescopic rod (209), an extension rod (211) is welded to one end of the fixing rod (207), a limiting cylinder (216) is welded to one end surface of the connecting plate (212), and a limiting spring (217) is spot-welded to the inside of the limiting cylinder (216); The gas outlet end of the gas tank (220) is connected to a constant pressure groove cylinder (221), a constant pressure rod (222) is slidably mounted on the inner side of the constant pressure groove cylinder (221), and a constant pressure plate (223) is welded to one end surface of the constant pressure rod (222); An air pump bracket (230) is welded to one end surface of the fixed bracket (1); a vacuum pump (231) is installed at the top end of the air pump bracket (230); an air inlet end of the vacuum pump (231) is connected to an air extraction pipe (232); and a one-way valve (233) is installed on the outside of the air extraction pipe (232).

5. A transformer winding drying constant voltage device according to claim 4, characterized in that: One end of the air extraction branch pipe (228) is connected to the air extraction pipe (232), and the input end of the electromagnetic control valve (229) is electrically connected to the output end of the external controller.

6. A transformer winding drying constant voltage device according to claim 4, characterized in that: A movable groove is provided at a position corresponding to a position of the limit spring (217) on one end surface of the connecting plate (212), and the limit spring (217) passes through the movable groove and abuts against an end surface of one end surface of the sliding plate (214).

7. A transformer winding drying constant voltage device according to claim 4, characterized in that: Two groups of constant pressure groove cylinders (221) are provided, and the two groups of constant pressure groove cylinders (221) are symmetrically welded to the end surfaces of both sides of the gas tank (220), and the input ends of the rotating motor (204), the electric telescopic rod (209) and the vacuum pump (231) are all electrically connected to the output end of the external controller.

8. A transformer winding drying constant voltage device according to claim 1, characterized in that: A moisture absorption component (3) is installed on one side of the fixed bracket (1); The moisture absorption component (3) comprises a lubricating oil box (301); A lubricating oil box (301) is provided on one side of the fixed bracket (1); an oil cavity (302) is provided on the inner side of the lubricating oil box (301); a supporting groove plate (303) is welded on the inner side of the oil cavity (302); a sponge (304) is bonded to the top of the supporting groove plate (303); an oil filling groove plate (305) is welded on one end face of the lubricating oil box (301); an oil filling port (306) is provided at a position corresponding to the end face of the lubricating oil box (301) and the oil filling groove plate (305); an oil drain groove (307) is provided on the bottom end of the lubricating oil box (301); an oil drain pipe (308) is welded on the bottom end of the lubricating oil box (301) and the oil drain groove (307); an oil outlet control valve (309) is installed on the outer side of the oil drain pipe (308); The inner wall of the vacuum drying tank (202) is provided with resistance heating rods (310) at equal angles, an exhaust groove (311) is provided at the top position of the outer side of the vacuum drying tank (202), a moisture absorption groove plate (312) is welded at a position of the outer side of the vacuum drying tank (202) corresponding to the exhaust groove (311), a fixed threaded pipe (313) is welded to the outer side of the vacuum drying tank (202), a positioning groove plate (314) is clamped to the outer side of the moisture absorption groove plate (312), and the outer side of the positioning groove plate (314) is welded A limit connection cylinder (315) is provided, a fixing screw (316) is slidably mounted on the inner side of the limit connection cylinder (315), a rubber sealing plate (317) is embedded in the inner bottom of the positioning groove plate (314), a positioning card slot (318) is provided on the inner side of the moisture absorption groove plate (312), a magnetic card block (319) is adsorbed on the inner side of the moisture absorption groove plate (312), a silica gel drying bag (320) is embedded in the inner side of the magnetic card block (319), and a handle (321) is welded to the top of the magnetic card block (319).

9. A transformer winding drying constant voltage device according to claim 8, characterized in that: The position-limiting connection tube (315) is welded to the outer side of the positioning slot plate (314) at a position corresponding to the fixed threaded tube (313), and the fixed screw rod (316) passes through the position-limiting connection tube (315) and is threadedly connected to the fixed threaded tube (313).

10. A transformer winding drying constant voltage device according to claim 8, characterized in that: Two magnetic card blocks (319) are provided, and the two magnetic card blocks (319) are symmetrically mounted on the inner side of the moisture absorption slot plate (312). The input end of the resistance heating rod (310) is electrically connected to the output end of the external controller.

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