An intelligent transformer that is easy to maintain

Abstract

The present invention discloses an intelligent transformer that is easy to maintain, and relates to the technical field of transformers. A disassembly and maintenance component is installed on the outer side of the transformer shell, a sealing cover is installed on the top surface of the fixed edge, an insulating rod is movably installed inside the docking hole, an iron block is fixedly clamped at the bottom end of the insulating rod, and a clamping plate is hingedly installed on the edge of the insulating top frame, a clamping claw is welded at the bottom end of the clamping plate, a magnetic iron ring is embedded in the magnetic groove, and the bottom end of the folding retaining ring is bonded and connected to the top surface of the sealing cover. If the insulating oil leaks, the volatilized insulating oil will be extracted into an observation bottle by an air pump and pass through a porous oil testing paper board. By observing the porous oil testing paper board, it can be judged whether there is oil leakage. The electric push rod pulls the sealing frame downward, and the clamping plate is rotated to separate from the fixed edge. The sealing cover on the top of the transformer shell can be removed, and the transformer can be quickly opened for maintenance and replacement of the insulating oil. Whether it is a short-term minor maintenance or a long-term major maintenance, the detection efficiency can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to an intelligent transformer that is easy to maintain. Background Art

[0002] Smart transformers are the product of the integration of computer technology, power electronics technology, communication technology and transformer technology. On the basis of ordinary transformers, corresponding devices are installed as needed to enable them to have one or more intelligent adjustment capabilities. For example, the intelligent on-load capacity-adjusting transformer has two capacity gears, large and small, and can automatically adjust the capacity according to load changes without power outages.

[0003] The patent application number 201921733681.7 mentions "a new type of electric intelligent transformer". The motor of the device, with the cooperation of the threaded column and the threaded barrel, enables the transformer to be better pushed out of the box, which is convenient for personnel to inspect and maintain. The mutual cooperation between the various structures makes the intelligent effect of the transformer better. However, when the above-mentioned transformer is inspected, when the insulating oil inside the transformer casing leaks during inspection, each bolt needs to be inspected, which is time-consuming. When it is opened for inspection, installation and disassembly are also extremely difficult, which brings many inconveniences to the inspection. Summary of the Invention

[0004] The present invention provides an intelligent transformer that is easy to maintain, which can effectively solve the problem raised in the above background technology that when the transformer housing is repaired, when the insulating oil leaks inside, each bolt needs to be inspected, which is time-consuming. Moreover, when the transformer is opened for maintenance, installation and disassembly are also extremely difficult, which brings many inconveniences to the maintenance.

[0005] To achieve the above object, the present invention provides the following technical solution: an intelligent transformer that is easy to maintain, comprising a transformer housing, a disassembly and maintenance component installed on the outer side of the transformer housing, and the disassembly and maintenance component including a fixed edge;

[0006] A fixed edge is welded to the top of the transformer housing, a sealing cover is installed on the top surface of the fixed edge, docking holes are evenly opened on the edge of the sealing cover and the top surface of the fixed edge, an insulating rod is movably installed inside the docking hole, an extrusion spring is sleeved on the middle part of the insulating rod, an iron block is fixedly clamped at the bottom end of the insulating rod, several insulating rods are welded to the bottom surface of the insulating top frame, and a card is hingedly installed on the edge of the insulating top frame, sealing rubber strips are bonded to both ends of the card, and a claw is welded at the bottom end of the card;

[0007] An insulating bottom frame is fixedly sleeved on the outer side of the transformer housing below the fixed edge, a magnetic groove is provided on the bottom surface of the insulating bottom frame, a magnetic iron ring is embedded in the magnetic groove, and electromagnets are installed at the corners of the bottom edge of the magnetic iron ring by screws, a magnetic hole is provided on the top surface of the magnetic groove at the corresponding docking hole, the inner side of the insulating top frame is bonded to the top of the folding retaining ring, and the bottom end of the folding retaining ring is bonded to the top surface of the sealing cover;

[0008] A sealing frame is slidably sleeved on the outside of the insulating bottom frame, and the bottom ends of both sides of the sealing frame are connected to the top of the extended end of the electric push rod, and the bottom end of the electric push rod is connected to the outside of the transformer casing. An air collecting box is installed through the upper end of the side of the card plate close to the electric push rod, and a fixed connecting pipe is installed through the middle of the bottom surface of the air collecting box. A movable hose is inlaid inside the fixed connecting pipe, and the bottom end of the movable hose is connected to the suction end of the vacuum pump, and the exhaust end of the vacuum pump is connected to the top of the observation bottle through a rubber tube. The bottom end of the observation bottle is inlaid with a bottom filter plate, and the bottom end of the observation bottle is located on the top surface of the bottom filter plate and is movably inlaid with a porous oil testing paper board.

[0009] According to the above technical solution, a slide is symmetrically welded on the bottom surface of the transformer housing, and the slide is slidably clamped on the top surface of the slide rail. The top surface of the slide rail is symmetrically rotatably inlaid with rollers. An adjustment hole is opened in the middle of the slide rail, and an extrusion strip is movably installed through the top surface of the adjustment hole. An extrusion groove is opened in the middle of the bottom surface of the extrusion strip, and an extrusion oblique block is symmetrically arranged inside the extrusion groove. A bidirectional screw is installed inside the adjustment hole, and both ends of the bidirectional screw are connected to the extrusion oblique block through screw holes respectively.

[0010] The two slide rails are symmetrically installed at the bottom of the outer box. A fixed end cover is welded at the position of the outer box corresponding to the bottom of the slide rail. A movable end cover is clamped at the top of the fixed end cover corresponding to the slide. A rotating rod is installed on the end surface of the fixed end cover for rotation. One end of the rotating rod is welded to one end of the bidirectional screw rod.

[0011] According to the above technical solution, the iron block and the insulating rod are cylinders of equal diameter, the bottom edge of the iron block is chamfered, the bottom surface of the iron block is flat, and the docking hole and the iron block are transitionally matched;

[0012] The diameters of the magnetic hole and the docking hole are equal.

[0013] According to the above technical solution, the inner side of the sealing frame is in contact with the outer side of the fixed edge, and the outer side of the fixed edge is aligned with the outer edge of the insulating bottom frame.

[0014] According to the above technical solution, the end face of the slide rail is convex, the slide plate is slidably connected to the top surface of the slide rail, the top surface of the extrusion strip is a rough surface that fits the bottom surface of the slide plate, and the top surface of the extrusion bevel block is an inclined surface and the bottom surface is a smooth surface.

[0015] According to the above technical solution, the electromagnet, electric push rod and air pump input ends are electrically connected to the external controller output end respectively, and the external controller output end is electrically connected to the external power supply output end.

[0016] According to the above technical solution, a maintenance wiring assembly is installed on the top surface of the sealing cover, and the maintenance wiring assembly includes a wiring sleeve;

[0017] The top surface of the sealing cover is evenly equipped with a wiring sleeve, and the top of the wiring sleeve is also equipped with an L-shaped wiring board through bolts. The top of the L-shaped wiring board is also movably connected with a spring clip, and a guide column is welded on the top of the spring clip. Several of the guide columns are fixed through the movable frame, and the top surface of the movable frame is symmetrically equipped with a heat-conducting column. The top surface of the heat-conducting column is bonded with a plastic box, and the top surfaces of the two plastic boxes are bonded to the bottom surface of the fixed frame. Reset springs are symmetrically installed in the gap between the movable frame and the fixed frame. The fixed frame is provided with a threading hole corresponding to the guide column, and a rubber block is embedded in the threading hole. A cross hole is provided in the middle of the rubber block. A sliding bar is installed in the middle of the top surface of the fixed frame, and the top surface of the sliding bar is slidably connected to a connecting plate, which is fixedly connected to the top surface of the outer box. Flame-retardant plates are installed on both sides of the corresponding fixed frame inside the outer box by screws. The bottom surface of the flame-retardant plate is evenly connected with a wire trough plate, and a wire pressing plate is hingedly installed at one end of the wire trough plate.

[0018] According to the above technical solution, secondary junction boxes are installed on both sides of the outer box, the end plates of the wire trough plate are aligned with the wire holes, and the top surface of the fixing frame is aligned with the top surface of the flame retardant plate.

[0019] According to the above technical solution, a clamping hole is opened in the middle of the L-shaped terminal block, a clamping block is welded inside the spring clamp corresponding to the clamping hole, and arc-shaped guide plates are symmetrically welded on both sides of the spring clamp.

[0020] According to the above technical solution, the slide bar and the slide rail are parallel, and the connecting plate and the slide bar are of the same length.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. A disassembly and maintenance component is provided. When maintenance is required, after power is turned off, the rotating rod is toggled, and the extrusion bar pushes the slide down and close to the roller, pushing the transformer casing out of the transformer casing, and the sealing cover is outside the outer box, expanding the operating space for easy maintenance;

[0023] During short-term minor maintenance, if it is necessary to detect whether insulating oil leaks, a porous oil test paper is placed on the top surface of the bottom filter plate and reset. The vacuum pump is started to extract air from the enclosed space composed of the insulating top frame, folding retaining ring, clamping plate and fixed edge. If the insulating oil leaks, the volatilized insulating oil will be drawn into the observation bottle by the vacuum pump and pass through the porous oil test paper. By observing the porous oil test paper, it can be determined whether there is an oil leak. Compared with observing the bolt connection positions one by one, the detection speed is greatly improved.

[0024] When detecting the failure of insulating oil or performing a long-term overhaul, the electric push rod pulls the sealing frame down, the electromagnet starts, pulls the iron block to attract the magnetic iron ring, and then the insulating top frame is close to the sealing cover. The bottom end of the claw is separated from the fixed edge, the rotating card is separated from the fixed edge, the electromagnet is powered off, the squeezing spring returns to its original shape and pushes the insulating top frame further away from the sealing cover, then the sealing cover on the top of the transformer casing can be removed, the transformer can be quickly opened for overhaul and replacement of insulating oil, whether it is a short-term minor overhaul or a long-term overhaul, which can effectively improve the detection efficiency.

[0025] 2. A maintenance wiring assembly is provided. When the transformer is operating normally and a fire occurs, the temperature continues to rise. The heat-conducting column will soften the bottom of the plastic box in contact with it when it is continuously heated. Since the reset spring is in an extended state, the plastic box will eventually be unable to support the heat-conducting column. The reset spring will contract and pull the movable frame closer to the fixed frame. The L-shaped terminal block and the spring clip will separate and cut off the power. The flame-retardant plate blocks the power, quickly cutting off the power while reducing damage to the cable, which is safer.

[0026] The spring clip and L-shaped terminal block connection replaces the common connection method, making connection and disconnection very convenient and quick. When the spring clip is detached from the L-shaped terminal block, the movable frame and the cross hole in the rubber block limit the connection wires connected by the spring clip and prevent them from touching the L-shaped terminal block during maintenance. This eliminates the need to use insulating tape to fix the corresponding connection wires during maintenance, avoiding the risk of electric shock.

[0027] In summary, when the transformer casing of the maintenance wiring assembly is disassembled and moved out of the outer box, the slide bar and the connecting plate will also slide relative to each other, the L-shaped terminal board will be separated from the spring clip, and the power will be cut off to ensure safety. The two components cooperate with each other, which is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 It is a structural schematic diagram of the present invention;

[0030] Figure 2It is a structural diagram of the disassembly and repair assembly of the present invention;

[0031] Figure 3 It is a schematic diagram of the installation structure of the fixed edge of the present invention;

[0032] Figure 4 This invention Figure 3 Schematic diagram of the A region structure;

[0033] Figure 5 It is a schematic diagram of the installation structure of the magnetic iron ring of the present invention;

[0034] Figure 6 Schematic diagram of the installation structure of the air pump of the present invention;

[0035] Figure 7 Schematic diagram of the installation structure of the roller of the present invention;

[0036] Figure 8 It is a structural diagram of the maintenance wiring assembly of the present invention;

[0037] Figure 9 This is a schematic diagram of the installation structure of the heat-conducting column of the present invention;

[0038] Figure 10 This invention Figure 9 Schematic diagram of the structure of region B;

[0039] Figure 11 This invention Figure 9 Schematic diagram of the C region structure;

[0040] Numbers in the figure: 1, transformer housing;

[0041] 2. Disassemble and inspect components; 201. Fixed edge; 202. Sealing cover; 203. Docking hole; 204. Insulating rod; 205. Extrusion spring; 206. Iron block; 207. Insulating top frame; 208. Clamping plate; 209. Sealing rubber strip; 210. Clamping claw; 211. Insulating bottom frame; 212. Magnetic groove; 213. Magnetic iron ring; 214. Electromagnet; 215. Magnetic hole; 216. Folding retaining ring; 217. Sealing frame; 218. Electric push rod; 219, gas collecting box; 220, fixed connecting pipe; 221, movable hose; 222, air pump; 223, observation bottle; 224, bottom filter plate; 225, porous oil test paper; 226, slide plate; 227, slide rail; 228, roller; 229, adjustment hole; 230, extrusion bar; 231, extrusion groove; 232, extrusion bevel block; 233, bidirectional screw; 234, outer box; 235, fixed end cover; 236, rotating rod; 237, movable end cover;

[0042] 3. Repair wiring assembly; 301. Wiring sleeve; 302. L-shaped terminal block; 303. Spring clip; 304. Clamp hole; 305. Clamp block; 306. Guide column; 307. Movable frame; 308. Heat-conducting column; 309. Plastic box; 310. Fixed frame; 311. Return spring; 312. Threading hole; 313. Rubber block; 314. Cross hole; 315. Slide bar; 316. Connecting plate; 317. Flame retardant plate; 318. Wire trough plate; 319. Wire pressing plate; 320. Arc guide plate;

[0043] 4. Secondary junction box. DETAILED DESCRIPTION

[0044] The preferred embodiments of the present invention are described below with reference to 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.

[0045] Example: Figure 1-11 As shown, the present invention provides a technical solution for an intelligent transformer that is easy to maintain, including a transformer housing 1, a disassembly and maintenance component 2 is installed on the outside of the transformer housing 1, and the disassembly and maintenance component 2 includes a fixed edge 201, a sealing cover 202, a docking hole 203, an insulating rod 204, an extrusion spring 205, an iron block 206, an insulating top frame 207, a clamping plate 208, a sealing rubber strip 209, a clamping claw 210, an insulating bottom frame 211, a magnetic suction groove 212, a magnetic iron ring 213, an electromagnet 214, a magnetic suction Hole 215, folding retaining ring 216, sealing frame 217, electric push rod 218, gas collecting box 219, fixed pipe 220, movable hose 221, air pump 222, observation bottle 223, bottom filter plate 224, porous oil test paper 225, slide plate 226, slide rail 227, roller 228, adjustment hole 229, extrusion bar 230, extrusion groove 231, extrusion inclined block 232, bidirectional screw rod 233, outer box 234, fixed end cover 235, rotating rod 236 and movable end cover 237;

[0046] A fixed edge 201 is welded to the top of the transformer housing 1, and a sealing cover 202 is installed on the top surface of the fixed edge 201. Docking holes 203 are evenly opened on the edge of the sealing cover 202 and the top surface of the fixed edge 201. An insulating rod 204 is installed inside the docking hole 203. An extrusion spring 205 is sleeved in the middle of the insulating rod 204. An iron block 206 is fixedly clamped at the bottom end of the insulating rod 204. Several insulating rods 204 are welded to the bottom surface of the insulating top frame 207. The edges of the insulating top frame 207 are hingedly installed with a card plate 208. Sealing rubber strips 209 are bonded to both ends of the card plate 208. A claw 210 is welded to the bottom end of the card plate 208. An insulating bottom frame 211 is fixedly sleeved on the outside of the transformer housing 1 below the fixed edge 201. 11 The bottom surface is provided with a magnetic suction groove 212, and a magnetic suction iron ring 213 is embedded inside the magnetic suction groove 212. Electromagnets 214 are installed at the corners of the bottom edge of the magnetic suction iron ring 213 by screws. A magnetic suction hole 215 is provided on the top surface of the magnetic suction groove 212 corresponding to the docking hole 203. The iron block 206 and the insulating rod 204 are cylinders of equal diameter. The bottom edge of the iron block 206 is chamfered, and the bottom surface of the iron block 206 is flat. The docking hole 203 and the iron block 206 are transitionally matched. The diameter of the magnetic suction hole 215 is equal to that of the docking hole 203, so that the iron block 206 and the insulating rod 204 can pass through the docking hole 203 and enter the magnetic suction hole 215. The inner side of the insulating top frame 207 is bonded to the top of the folding retaining ring 216, and the bottom end of the folding retaining ring 216 is bonded to the top surface of the sealing cover 202.

[0047] The outer side of the insulating bottom frame 211 is slidably sleeved with a sealing frame 217, and the inner side of the sealing frame 217 fits the outer side of the fixed edge 201. The outer edge of the fixed edge 201 and the outer edge of the insulating bottom frame 211 are aligned, so that the sealing frame 217 can slide along the outer side of the fixed edge 201 and the insulating bottom frame 211. The bottom ends of both sides of the sealing frame 217 are connected to the top end of the extended end of the electric push rod 218. The bottom end of the electric push rod 218 is connected to the outer side of the transformer housing 1. The upper end of the side of the card plate 208 near the electric push rod 218 is penetrated by a gas collecting box 219. The middle of the bottom surface of the gas collecting box 219 is penetrated by a fixed pipe 220. The inside of the fixed pipe 220 It is inlaid with a movable hose 221, the bottom end of which is connected to the suction end of the air pump 222, the electromagnet 214, the electric push rod 218 and the input end of the air pump 222 are electrically connected to the output end of the external controller respectively, and the output end of the external controller is electrically connected to the output end of the external power supply to ensure the normal operation of the electromagnet 214, the electric push rod 218 and the air pump 222, the exhaust end of the air pump 222 is connected to the top of the observation bottle 223 through a rubber tube, the bottom end of the observation bottle 223 is inlaid with a bottom filter plate 224, and the bottom end of the observation bottle 223 is located on the top surface of the bottom filter plate 224 and is movably inlaid with a porous oil test paper board 225.

[0048] The bottom surface of the transformer housing 1 is symmetrically welded with a slide plate 226, which is slidably connected to the top surface of the slide rail 227. The end surface of the slide rail 227 is a "convex" shape. The slide plate 226 is slidably connected to the top surface of the slide rail 227. The top surface of the extrusion strip 230 is a rough surface that fits the bottom surface of the slide plate 226. The extrusion bevel 232 has an inclined top surface and a smooth bottom surface, which facilitates the slide plate 226 to slide along the slide rail 227. The top surface of the slide rail 227 is symmetrically rotated and inlaid with a roller 228. An adjustment hole 229 is opened in the middle of the slide rail 227. The top surface of the adjustment hole 229 is movably penetrated by an extrusion strip 230. The bottom of the extrusion strip 230 An extrusion groove 231 is provided in the middle of the surface, and an extrusion oblique block 232 is symmetrically arranged inside the extrusion groove 231. A bidirectional screw rod 233 is installed inside the adjustment hole 229. The two ends of the bidirectional screw rod 233 are connected to the extrusion oblique block 232 through screw holes respectively. Two slide rails 227 are symmetrically installed at the bottom end of the outer box 234. A fixed end cover 235 is welded at the bottom end of the outer box 234 corresponding to the slide rail 227. A movable end cover 237 is clamped at the top of the fixed end cover 235 corresponding to the slide plate 226. A rotating rod 236 is installed on the end face of the fixed end cover 235 for rotation. One end of the rotating rod 236 is welded to one end of the bidirectional screw rod 233.

[0049] The top surface of the sealing cover 202 is equipped with an inspection wiring assembly 3, which includes a wiring sleeve 301, an L-shaped wiring board 302, a spring clamp 303, a clamping hole 304, a clamping block 305, a guide column 306, a movable frame 307, a heat-conducting column 308, a plastic box 309, a fixed frame 310, a return spring 311, a threading hole 312, a rubber block 313, a cross hole 314, a slide bar 315, a connecting plate 316, a flame retardant plate 317, a wire trough plate 318, a wire pressing plate 319 and an arc-shaped guide plate 320;

[0050] The top surface of the sealing cover 202 is evenly installed with a wiring sleeve 301, and the top of the wiring sleeve 301 is also installed with an L-shaped wiring board 302 through a bolt. The top of the L-shaped wiring board 302 is also movably connected with a spring clip 303. A clamping hole 304 is opened in the middle of the L-shaped wiring board 302, and a clamping block 305 is welded at the corresponding clamping hole 304 inside the spring clip 303. Arc guide plates 320 are symmetrically welded on both sides of the spring clip 303 to facilitate the connection between the L-shaped wiring board 302 and the spring clip. 303 connection is tighter, the top of the spring clip 303 is welded with a guide column 306, several guide columns 306 are fixed through the movable frame 307, the top surface of the movable frame 307 is symmetrically installed with heat-conducting columns 308, the top surface of the heat-conducting columns 308 is bonded with a plastic box 309, the top surfaces of the two plastic boxes 309 are bonded to the bottom surface of the fixed frame 310, the gap between the movable frame 307 and the fixed frame 310 is symmetrically installed with a reset spring 311, and the fixed frame 310 is opened at the corresponding guide column 306. A threading hole 312 is provided, a rubber block 313 is embedded in the threading hole 312, a cross hole 314 is opened in the middle of the rubber block 313, a slide bar 315 is installed in the middle of the top surface of the fixed frame 310, and a connecting plate 316 is slidably connected to the top surface of the slide bar 315. The slide bar 315 is parallel to the slide rail 227, and the connecting plate 316 and the slide bar 315 have the same length, which facilitates the synchronous sliding of the slide bar 315 and the slide rail 227. The connecting plate 316 is fixedly connected to the inner top surface of the outer box 234, and the outer box 234 is fixedly connected to the inner top surface of the outer box 234. Flame retardant plates 317 are installed on both sides of the corresponding fixed frame 310 inside 34 by screws, and the bottom surface of the flame retardant plate 317 is evenly clamped and installed with a wire trough plate 318. Secondary junction boxes 4 are installed on both sides of the outer box 234. The end plates of the wire trough plate 318 are aligned with the wire holes 312, and the top surface of the fixed frame 310 is aligned with the top surface of the flame retardant plate 317, so that the wires can pass through the wire holes 312 and be clamped in the wire trough plate 318. A wire pressing plate 319 is hingedly installed at one end of the wire trough plate 318.

[0051] The working principle and use process of the present invention are as follows: after insulating oil is poured into the transformer housing 1, a winding iron ring and other structures are placed in the transformer housing 1. When installing the sealing cover 202, the electric push rod 218 is first started. The electric push rod 218 pulls the sealing frame 217 downward until the top of the sealing frame 217 is below the fixed edge 201. The insulating rod 204 passes through the docking hole 203 and presses the insulating top frame 207 downward. Then the electromagnet 214 is started, and the electromagnet 214 magnetizes the magnetic iron ring 213. , the magnetic iron ring 213 attracts the iron block 206 at the bottom end of the insulating rod 204, and the iron block 206 passes through the magnetic hole 215 and is tightly attracted by the magnetic iron ring 213. At this time, the extrusion spring 205 and the folding retaining ring 216 are both in a contracted state, and the card plate 208 is rotated to clamp the claw 210 to the edge of the fixed edge 201 and fix it. At this time, the sealing covers 202 at both ends of the adjacent fixed edges 201 are close to each other and squeezed, and the folding retaining ring 216 is cooperated to make the fixed edge 201 and the insulating top frame 20 7 forms a closed space between, and then the electric push rod 218 is started to push the sealing frame 217 upward until the top of the sealing frame 217 is close to the bottom of the gas collecting box 219, and the sealing frame 217 wraps the card plate 208 to prevent the card plate 208 from separating from the fixed edge 201. Then the electromagnet 214 is powered off, and under the reset action of the extrusion spring 205, the extrusion spring 205 continuously squeezes the edge of the sealing cover 202, and makes the clamping claw 210 clamp the fixed edge 201 position more tightly, the fixed edge 201 and the sealing cover 202 are connected more tightly, reducing the gap at the connection, and the transformer housing 1 is installed in the outer box 234. The slide plate 226 is slidably connected and installed at the top of the slide rail 227, and the rotating rod 236 is toggled to drive the bidirectional screw rod 233 to rotate. The extrusion oblique blocks 232 at both ends of the bidirectional screw rod 233 move away from the center of the extrusion groove 231, and the extrusion bar 230 rises, and the extrusion bar 230 pushes the slide plate 226 to rise and away from the roller 228 to prevent the transformer housing 1 from sliding at will;

[0052] Then the spring clamp 303 is connected to the wiring sleeve 301, the top of the guide post 306 is connected to the cable, the cable passes through the cross hole 314 in the threading hole 312 and is embedded in the wire clamping groove plate 318, and the wire pressing plate 319 is rotated to fix it. Then the cable is connected to the secondary junction box 4;

[0053] When maintenance is required, after power is turned off, the doors at both ends of the outer box 234 are opened, the rotating rod 236 is toggled, and the extrusion bevels 232 at both ends of the bidirectional screw rod 233 are close to the center of the extrusion groove 231, and the extrusion bar 230 is lowered. The extrusion bar 230 pushes the slide plate 226 to fall and approach the roller 228. The slide plate 226 can slide at the roller 228 on the top surface of the slide rail 227, pushing the transformer housing 1 out of the transformer housing 1. At this time, the spring clip 303 is separated from the L-shaped terminal board 302 to ensure that the spring clip 303 does not touch the L-shaped terminal board 302 during the maintenance process, and the sealing cover 202 is on the outside of the outer box 234, so as to facilitate maintenance and perform short-term small inspections. During repair, if it is necessary to detect whether the insulating oil is leaking, the movable hose 221 is connected to the fixed pipe 220, the bottom filter plate 224 at the bottom end of the observation bottle 223 is opened, and a porous oil-testing paper board 225 is placed on the top surface of the bottom filter plate 224 and reset. The vacuum pump 222 is started to extract the air in the enclosed space formed by the insulating top frame 207, the folding retaining ring 216, the clamping plate 208 and the fixed edge 201. If the insulating oil leaks, the volatilized insulating oil will be extracted into the observation bottle 223 by the vacuum pump 222 and pass through the porous oil-testing paper board 225. By observing the porous oil-testing paper board 225, it can be determined whether there is an oil leak. Compared with observing the bolt connection positions one by one, the detection speed is greatly improved.

[0054] When detecting the failure of insulating oil or performing a long-term overhaul and the transformer needs to be opened, the electric push rod 218 pulls the sealing frame 217 downward until the sealing frame 217 is separated from the bottom end of the clamping plate 208, and the electromagnet 214 is started again, pulling the iron block 206 to attract the magnetic iron ring 213, thereby making the insulating top frame 207 close to the sealing cover 202, and the bottom end of the claw 210 is separated from the fixed edge 201, and the rotating clamping plate 208 is separated from the fixed edge 201. The electromagnet 214 is powered off, and the squeezing spring 205 returns to its original state and pushes the insulating top frame 207 to continue to move away from the sealing cover 202, so that the sealing cover 202 at the top of the transformer housing 1 can be removed, and the transformer can be quickly opened for overhaul and replacement of insulating oil. Whether it is a short-term minor overhaul or a long-term overhaul, the detection efficiency can be effectively improved;

[0055] When the transformer is operating normally, if a fire occurs, the temperature will continue to rise, heating the insulated movable frame 307 and the heat-conducting pillar 308. When the heat-conducting pillar 308 is continuously heated, the bottom of the plastic box 309 in contact with it will soften. Since the return spring 311 is in an extended state, the plastic box 309 will eventually be unable to support the heat-conducting pillar 308. The return spring 311 will contract and pull the movable frame 307 closer to the fixed frame 310. The L-shaped terminal block 302 and the spring clip 303 will separate and the power will be cut off. Due to the obstruction of the flame retardant plate 317, the power is quickly cut off while minimizing damage to the cable, thereby improving safety.

[0056] The disassembly and maintenance component 2 makes it easy to detect whether the insulating oil is leaking, and it is also easy to disassemble and open the transformer, which effectively reduces the maintenance time regardless of the size of the maintenance. When the transformer housing 1 of the maintenance component 2 is removed from the outer box 234, the slide bar 315 and the connecting plate 316 will also slide relative to each other, and the L-shaped terminal block 302 will be separated from the spring clip 303, and the power will be cut off to ensure safety. The two components cooperate with each other, which is safer.

[0057] Finally, it should be noted that the above description is merely a preferred embodiment 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 will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An intelligent transformer that is easy to maintain, comprising a transformer housing (1), characterized in that: A disassembly and maintenance assembly (2) is installed on the outside of the transformer housing (1), and the disassembly and maintenance assembly (2) includes a fixed edge (201); The top of the transformer housing (1) is welded with a fixed edge (201), the top surface of the fixed edge (201) is installed with a sealing cover (202), the edge of the sealing cover (202) and the top surface of the fixed edge (201) are evenly provided with docking holes (203), an insulating rod (204) is movably installed inside the docking hole (203), a compression spring (205) is sleeved on the middle of the insulating rod (204), an iron block (206) is fixedly clamped at the bottom end of the insulating rod (204), a plurality of the insulating rods (204) are welded to the bottom surface of the insulating top frame (207), the edges of the insulating top frame (207) are hingedly installed with a card plate (208), both ends of the card plate (208) are bonded with a sealing rubber strip (209), and a clamping claw (210) is welded at the bottom end of the card plate (208); An insulating bottom frame (211) is fixedly sleeved on the outer side of the transformer housing (1) at a position below the fixed edge (201); a magnetic suction groove (212) is provided on the bottom surface of the insulating bottom frame (211); a magnetic iron ring (213) is embedded in the magnetic suction groove (212); electromagnets (214) are installed at the corners of the bottom edge of the magnetic iron ring (213) by screws; a magnetic suction hole (215) is provided on the top surface of the magnetic suction groove (212) facing the connecting hole (203); the inner side of the insulating top frame (207) is bonded to the top of the folding retaining ring (216); and the bottom end of the folding retaining ring (216) is bonded to the top surface of the sealing cover (202); The outer side of the insulating bottom frame (211) is slidably sleeved with a sealing frame (217), the bottom ends of both sides of the sealing frame (217) are connected to the top end of the extended end of the electric push rod (218), the bottom end of the electric push rod (218) is connected to the outer side of the transformer housing (1), and the upper end of the side of the card plate (208) close to the electric push rod (218) is penetrated and installed with a gas collecting box (219), and the middle part of the bottom surface of the gas collecting box (219) is penetrated and installed with a fixed pipe (220), and the fixed pipe (220) is embedded with a movable hose (221), the bottom end of the movable hose (221) is connected to the suction end of the vacuum pump (222), and the exhaust end of the vacuum pump (222) is connected to the top end of the observation bottle (223) through a rubber tube, and the bottom end of the observation bottle (223) is embedded with a bottom filter plate (224), and the bottom end of the observation bottle (223) is movably embedded with a porous oil test paper (225) on the top surface of the bottom filter plate (224).

2. The intelligent transformer that is easy to maintain according to claim 1, characterized in that: The bottom surface of the transformer housing (1) is symmetrically welded with a slide plate (226), the slide plate (226) is slidably clamped on the top surface of the slide rail (227), the top surface of the slide rail (227) is symmetrically rotatably inlaid with a roller (228), the middle portion of the slide rail (227) is provided with an adjustment hole (229), the top surface of the adjustment hole (229) is movably penetrated by an extrusion strip (230), the middle portion of the bottom surface of the extrusion strip (230) is provided with an extrusion groove (231), the interior of the extrusion groove (231) is symmetrically provided with an extrusion oblique block (232), the interior of the adjustment hole (229) is provided with a bidirectional screw rod (233), and both ends of the bidirectional screw rod (233) are connected to the extrusion oblique block (232) through screw holes. The two slide rails (227) are symmetrically mounted on the bottom of the outer box (234). A fixed end cover (235) is welded to the outer box (234) at a position corresponding to the bottom of the slide rail (227). A movable end cover (237) is clamped to the top of the fixed end cover (235) at a position corresponding to the slide plate (226). A rotating rod (236) is rotatably mounted through the end surface of the fixed end cover (235). One end of the rotating rod (236) is welded to one end of the bidirectional screw rod (233).

3. The intelligent transformer that is easy to maintain according to claim 1 is characterized in that: The iron block (206) and the insulating rod (204) are cylinders of equal diameter, the bottom edge of the iron block (206) is chamfered, the bottom surface of the iron block (206) is flat, and the docking hole (203) and the iron block (206) are transitionally matched; The magnetic hole (215) and the docking hole (203) have the same diameter.

4. The intelligent transformer that is easy to maintain according to claim 1 is characterized in that: The inner side of the sealing frame (217) is in contact with the outer side of the fixed edge (201), and the outer side of the fixed edge (201) is aligned with the outer edge of the insulating bottom frame (211).

5. The intelligent transformer that is easy to maintain according to claim 2, characterized in that: The end surface of the slide rail (227) is convex, the slide plate (226) is slidably connected to the top surface of the slide rail (227), the top surface of the extrusion strip (230) is a rough surface that fits the bottom surface of the slide plate (226), and the top surface of the extrusion bevel (232) is an inclined surface and the bottom surface is a smooth surface.

6. The intelligent transformer that is easy to maintain according to claim 2, characterized in that: The input ends of the electromagnet (214), the electric push rod (218) and the air pump (222) are electrically connected to the output end of the external controller, respectively, and the output end of the external controller is electrically connected to the output end of the external power supply.

7. The intelligent transformer that is easy to maintain according to claim 6, characterized in that: A maintenance wiring assembly (3) is installed on the top surface of the sealing cover (202), and the maintenance wiring assembly (3) includes a wiring sleeve (301); The top surface of the sealing cover (202) is evenly installed with a wiring sleeve (301), the top of the wiring sleeve (301) is installed with an L-shaped wiring board (302) through a bolt, the top of the L-shaped wiring board (302) is movably clamped with a spring clamp (303), the top of the spring clamp (303) is welded with a guide column (306), and a plurality of the guide columns (306) are fixed through the movable frame (307), the top surface of the movable frame (307) is symmetrically installed with a heat-conducting column (308), the top surface of the heat-conducting column (308) is bonded with a plastic box (309), the top surfaces of the two plastic boxes (309) are bonded to the bottom surface of the fixed frame (310), and a return spring (311) is symmetrically installed in the gap between the movable frame (307) and the fixed frame (310). The fixed frame (310) is provided with a threading hole (312) at the position corresponding to the guide column (306), and a rubber block (313) is embedded in the threading hole (312). A cross hole (314) is provided in the middle of the rubber block (313). A slide bar (315) is installed in the middle of the top surface of the fixed frame (310). The top surface of the slide bar (315) is slidably connected to a connecting plate (316). The connecting plate (316) is fixedly connected to the top surface of the outer box (234). Flame retardant plates (317) are installed on both sides of the fixed frame (310) inside the outer box (234) by screws. The bottom surface of the flame retardant plate (317) is evenly connected to a wire slot plate (318). One end of the wire slot plate (318) is hingedly installed with a wire pressing plate (319).

8. The intelligent transformer that is easy to maintain according to claim 7, characterized in that: Secondary junction boxes (4) are installed on both sides of the outer box (234), the end plates of the wire slot plate (318) and the wire threading holes (312) are aligned, and the top surface of the fixing frame (310) and the top surface of the flame retardant plate (317) are aligned.

9. The intelligent transformer that is easy to maintain according to claim 7, characterized in that: A clamping hole (304) is provided in the middle of the L-shaped terminal board (302), a clamping block (305) is welded inside the spring clamp (303) at a position corresponding to the clamping hole (304), and arc-shaped guide plates (320) are symmetrically welded on both sides of the spring clamp (303).

10. The intelligent transformer that is easy to maintain according to claim 7, characterized in that: The slide bar (315) and the slide rail (227) are parallel, and the connecting plate (316) and the slide bar (315) have the same length.

Images