Intelligent transformer convenient to overhaul

Abstract

The invention discloses an intelligent transformer convenient to overhaul, and relates to the technical field of transformers, a disassembly and overhaul assembly is mounted on the outer side of a transformer shell, a sealing cover is mounted on the top surface of a fixed edge, an insulating rod is movably mounted in a butt joint hole in a penetrating manner, an iron block is fixedly clamped to the bottom end of the insulating rod, and clamping plates are hinged to the edges of an insulating top frame; if insulating oil leaks, volatilized insulating oil can be extracted into the observation bottle by the suction pump and penetrates through the porous oil-measuring test paper plate, whether oil leaks or not is judged by observing the porous oil-measuring test paper plate, and if the oil leaks, the oil leakage can be detected, and the oil leakage can be detected. The electric push rod pulls the sealing frame to move downwards, and the rotating clamping plate is separated from the fixed edge, so that the sealing cover at the top end of the transformer shell can be detached, the transformer is quickly opened for overhauling and replacing insulating oil, and the detection efficiency can be effectively improved no matter for short-term small overhauling or long-term large overhauling.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, in particular to an intelligent transformer which 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 with 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 repair. The mutual cooperation between the various structures makes the intelligent effect of the transformer better. However, when the above-mentioned transformer is overhauled, because the insulating oil inside the transformer casing is leaking during maintenance, each bolt needs to be inspected, which is time-consuming. When it is opened for maintenance, installation and disassembly are also extremely difficult, which brings many inconveniences to maintenance. 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 under maintenance, when the insulating oil inside is leaking, each bolt needs to be inspected, which is time-consuming, and when it 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 solutions: an intelligent transformer that is easy to maintain, comprising a transformer housing, a disassembly and maintenance component is installed on the outer side of the transformer housing, and the disassembly and maintenance component includes 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, butt 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 butt hole, an extrusion spring is sleeved in the middle 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 suction groove is provided on the bottom surface of the insulating bottom frame, a magnetic iron ring is embedded in the magnetic suction groove, and electromagnets are installed at the corners of the bottom edge of the magnetic iron ring by screws, a magnetic suction hole is provided on the top surface of the magnetic suction groove at the corresponding connection 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, and 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, and 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, and 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 plate is symmetrically welded on the bottom surface of the transformer housing, the slide plate 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, 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, an extrusion oblique block is symmetrically arranged inside the extrusion groove, a bidirectional screw rod is installed inside the adjustment hole, and both ends of the bidirectional screw rod 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 plate, a rotating rod is rotatably installed on the end surface of the fixed end cover, and 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 a plane, 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 input ends of the electromagnet, the electric push rod and the vacuum pump 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.

[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 installed with wiring sleeves, and the top of the wiring sleeve is also installed 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 installed with heat-conducting columns. A plastic box is bonded to the top surface of the heat-conducting columns, 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 threading holes at the corresponding guide columns, and rubber blocks are inlaid inside the threading holes. A cross hole is provided in the middle of the rubber block. A slide bar is installed in the middle of the top surface of the fixed frame, and a connecting plate is slidably connected to the top surface of the slide bar. The connecting plate is fixedly connected to the top surface of the outer box. Flame-retardant plates are installed at both sides of the corresponding fixed frame in the outer box through screws, and a wire slot plate is evenly connected to the bottom surface of the flame-retardant plate, and a wire pressing plate is hingedly installed at one end of the wire slot 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 threading holes, and the top surface of the fixed 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 plate 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 a short-term minor overhaul, if it is necessary to detect whether the insulating oil is leaking, place a porous oil test paper on the top surface of the bottom filter plate and reset it, start the vacuum pump, and extract the air in the closed space composed of the insulating top frame, folding retaining ring, card plate and fixed edge. If the insulating oil leaks, the volatile insulating oil will be extracted 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 judged whether there is oil leakage. 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 downward, the electromagnet starts, and pulls the iron block to absorb the magnetic iron ring, so that 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 plate is separated from the fixed edge, the electromagnet is powered off, the squeezing spring returns to its original state and pushes the insulating top frame continuously away from the sealing cover, 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 small overhaul or a long-term overhaul, it can effectively improve the detection efficiency.

[0025] 2. Set up a maintenance wiring assembly. When the transformer is working normally, if a fire occurs and 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. Because 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 shrink and pull the movable frame close to the fixed frame. The L-shaped wiring board and the spring clip will separate and cut off the power. Because of the blocking of the flame-retardant board, the power is quickly cut off while reducing the damage to the cable, which is safer.

[0026] The spring clip and L-shaped terminal block connection replaces the common connection method. The connection and disconnection are very convenient and quick. When the spring clip is separated from the L-shaped terminal block, the movable frame and the cross hole in the rubber block limit the connection line connected to the spring clip and ensure that the L-shaped terminal block will not be touched during the maintenance process. Therefore, it is no longer necessary to use insulating tape to fix the corresponding connection line during maintenance, avoiding the risk of electric shock.

[0027] In summary, when the maintenance wiring assembly is disassembled and the transformer casing is 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 schematic diagram of the structure of the present invention;

[0030] Figure 2It is a structural schematic 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 The present invention Figure 3 Schematic diagram of the structure of region A;

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

[0034] Figure 6 It is a schematic diagram of the installation structure of the air pump of the present invention;

[0035] Figure 7 It is a schematic diagram of the installation structure of the roller of the present invention;

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

[0037] Fig. 9 It is a schematic diagram of the installation structure of the heat-conducting column of the present invention;

[0038] Fig.10 The present invention Fig. 9 Schematic diagram of the structure of region B;

[0039] Fig.11 The present invention Fig. 9 Schematic diagram of the C region structure;

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

[0041] 2. Disassemble and overhaul 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 suction groove; 213, magnetic iron ring; 214, electromagnet; 215, magnetic suction hole; 216, folding retaining ring; 217, sealing frame; 218, electric push rod; 219, gas collecting box; 220, fixed 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 strip; 231, extrusion groove; 232, extrusion inclined block; 233, two-way screw rod; 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 wiring board; 303. Spring clamp; 304. Clamp hole; 305. Clamp block; 306. Guide column; 307. Movable frame; 308. Heat-conducting column; 309. Plastic box; 310. Fixed frame; 311. Reset spring; 312. Threading hole; 313. Rubber block; 314. Cross hole; 315. Slide bar; 316. Connecting plate; 317. Flame retardant plate; 318. Wire slot 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 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.

[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 outer side 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 suction iron ring 213, an electromagnet 214, and 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, suction 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, a sealing cover 202 is installed on the top surface of the fixed edge 201, and 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, and 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 at the bottom end of the card plate 208. An insulating bottom frame 211 is fixedly sleeved at the outer side of the transformer housing 1 below the fixed edge 201. The insulating bottom frame 2 A magnetic suction groove 212 is provided on the bottom surface of the magnetic suction groove 212, a magnetic suction iron ring 213 is embedded inside the magnetic suction groove 212, and an electromagnet 214 is installed at the corner 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, the bottom surface of the iron block 206 is a plane, the docking hole 203 and the iron block 206 are transitionally matched, and the diameter of the magnetic suction hole 215 and the docking hole 203 are equal, 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, the inner side of the sealing frame 217 fits the outer side of the fixed edge 201, and the outer edges of the fixed edge 201 and 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 of the extended end of the electric push rod 218, and 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 close to the electric push rod 218 is penetrated and installed with a gas collecting box 219, and the middle of the bottom surface of the gas collecting box 219 is penetrated and installed with a fixed pipe 220, and 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 vacuum pump 222, the electromagnet 214, the electric push rod 218 and the input end of the vacuum pump 222 are electrically connected to the output end of the external controller respectively, 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 vacuum pump 222, the exhaust end of the vacuum 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 testing 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 inclined block 232 has an inclined top surface and a smooth bottom surface, which is convenient for 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, and the bottom of the extrusion strip 230 is An extrusion groove 231 is opened in the middle of the surface, and an extrusion bevel block 232 is symmetrically arranged inside the extrusion groove 231. A bidirectional screw rod 233 is installed inside the adjustment hole 229. Both ends of the bidirectional screw rod 233 are connected to the extrusion bevel 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 position of the outer box 234 corresponding to the bottom end of 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 provided with an inspection wiring assembly 3, which includes a wiring sleeve 301, an L-shaped wiring board 302, a spring clamp 303, a clamp hole 304, a clamp block 305, a guide column 306, a movable frame 307, a heat-conducting column 308, a plastic box 309, a fixed frame 310, a reset 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 slot 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 clamp 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 clamp 303. Arc guide plates 320 are symmetrically welded on both sides of the spring clamp 303, which are convenient for the L-shaped wiring board 302 and the spring clamp The connection between the movable frame 307 and the fixed frame 310 is more tightly connected. A guide column 306 is welded on the top of the spring clip 303. Several guide columns 306 are fixed and penetrate 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. Reset springs 311 are symmetrically installed in the gap between the movable frame 307 and the fixed frame 310. The fixed frame 310 is opened at the corresponding guide column 306. A threading hole 312 is provided, a rubber block 313 is embedded inside 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, so that the slide bar 315 and the slide rail 227 can slide synchronously. 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 slot plate 318. Secondary junction boxes 4 are installed on both sides of the outer box 234. The end plate of the wire slot plate 318 is aligned with the threading hole 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 threading hole 312 and be clamped in the wire slot plate 318. A wire pressing plate 319 is hingedly installed at one end of the wire slot 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, and 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, and the insulating rod 204 passes through the docking hole 203 to squeeze the insulating top frame 207 downward, and 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 to 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 clamping 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, and then the electric push rod 218 is started to push the sealing frame 217 up 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 detaching 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 more tightly, the fixed edge 201 and the sealing cover 202 are connected more tightly, and the gap at the connection is reduced. The transformer housing 1 is installed in the outer box 234, and the slide plate 226 is slidably clamped and installed on the top of the slide rail 227. The rotating rod 236 is turned to drive the bidirectional screw rod 233 to rotate. The extrusion inclined blocks 232 at both ends of the bidirectional screw rod 233 are away from the center of the extrusion groove 231. 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 column 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 slot plate 318, the wire pressing plate 319 is rotated to fix it, and then the cable is connected to the secondary wiring box 4;

[0053] When maintenance is required, after power is turned off, the box doors at both ends of the outer box 234 are opened, the rotating rod 236 is toggled, and the extrusion inclined blocks 232 at both ends of the bidirectional screw rod 233 are close to each other at the center of the extrusion groove 231, and the extrusion bar 230 is lowered, and the extrusion bar 230 pushes the slide plate 226 to descend and approach the roller 228. The slide plate 226 can slide at the roller 228 on the top surface of the slide rail 227 to push the transformer housing 1 out of the transformer housing 1. At this time, the spring clamp 303 is separated from the L-shaped terminal board 302 to ensure that the spring clamp 303 does not touch the L-shaped terminal board 302 during the maintenance process, and the sealing cover 202 is outside the outer box 234 to facilitate maintenance and perform short-term small inspections. During maintenance, 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 of the observation bottle 223 is opened, and a porous oil test paper 225 is placed on the top surface of the bottom filter plate 224 and reset, and the vacuum pump 222 is started to extract the air in the closed space composed of 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 test paper 225. By observing the porous oil test paper 225, it is judged whether there is oil leakage. 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 opening the transformer is required, the electric push rod 218 pulls the sealing frame 217 downward until the sealing frame 217 is separated from the bottom end of the card plate 208, and the electromagnet 214 is started again, pulling the iron block 206 to attract the magnetic iron ring 213, so that the insulating top frame 207 is close to the sealing cover 202, and the bottom end of the claw 210 is separated from the fixed edge 201, and the rotating card plate 208 is separated from the fixed edge 201. The electromagnet 214 is powered off, and the squeezing spring 205 is restored 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 small overhaul or a long-term overhaul, the detection efficiency can be effectively improved;

[0055] When the transformer is working normally, if a fire occurs, the temperature will continue to rise, which will heat the insulated movable frame 307 and the heat-conducting column 308. When the heat-conducting column 308 is continuously heated, the bottom of the plastic box 309 in contact will soften, and because the reset spring 311 is in an extended state, the plastic box 309 will eventually be unable to support the heat-conducting column 308. The reset spring 311 will shrink and pull the movable frame 307 close to the fixed frame 310, and the L-shaped wiring board 302 and the spring clamp 303 will separate and cut off the power. Due to the obstruction of the flame-retardant plate 317, the power is quickly cut off while reducing the damage to the cable, which is safer.

[0056] The disassembly and maintenance component 2 is convenient for detecting whether the insulating oil is leaking, and it is also convenient for disassembling and opening the transformer. Regardless of the size of the maintenance, the maintenance time is effectively reduced. When the transformer housing 1 of the maintenance component 2 is disassembled and moved out of 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 board 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, and the safety is higher.

[0057] 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. An intelligent transformer that is easy to maintain, comprising a transformer housing (1), characterized in that: A disassembly and maintenance component (2) is installed on the outside of the transformer housing (1), and the disassembly and maintenance component (2) comprises a fixed edge (201); A fixed edge (201) is welded to the top of the transformer housing (1), 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 movably installed inside the docking hole (203), a compression 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), a plurality of the insulating rods (204) are welded to the bottom surface of the insulating top frame (207), a clamping plate (208) is hingedly installed on the edge of the insulating top frame (207), sealing rubber strips (209) are bonded to both ends of the clamping plate (208), and a clamping claw (210) is welded at the bottom end of the clamping 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 suction 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 ring (213) by screws; a magnetic suction hole (215) is provided on the top surface of the magnetic suction groove (212) facing the docking 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); A sealing frame (217) is slidably sleeved on the outside of the insulating bottom frame (211), and the bottom ends of both sides of the sealing frame (217) are connected to the top of the extended end of the electric push rod (218). The bottom end of the electric push rod (218) is connected to the outside of the transformer housing (1). A gas collecting box (219) is installed through the upper end of the side of the clamping plate (208) close to the electric push rod (218), and a fixed pipe (220) is installed through the middle of the bottom surface of the gas collecting box (219). A movable hose (221) is embedded in the fixed pipe (220). 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 of the observation bottle (223) through a rubber tube. 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 located at the top surface of the bottom filter plate (224) and is movably embedded with a porous oil test paper (225).

2. The intelligent transformer that is easy to maintain according to claim 1 is characterized in that: A slide plate (226) is symmetrically welded on the bottom surface of the transformer housing (1), 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), an adjustment hole (229) is provided in the middle of the slide rail (227), an extrusion strip (230) is movably installed through the top surface of the adjustment hole (229), an extrusion groove (231) is provided in the middle of the bottom surface of the extrusion strip (230), an extrusion inclined block (232) is symmetrically arranged inside the extrusion groove (231), a bidirectional screw rod (233) is installed inside the adjustment hole (229), and both ends of the bidirectional screw rod (233) are connected to the extrusion inclined block (232) through screw holes respectively; The two slide rails (227) are symmetrically mounted on the bottom of the outer box (234); a fixed end cover (235) is welded at the bottom 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 rotatably installed 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 a plane, and the docking hole (203) and the iron block (206) are transitionally matched; The magnetic attraction 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 is 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 block (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 is characterized in that: The input ends of the electromagnet (214), the electric push rod (218) and the vacuum 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 is 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) comprises a wiring sleeve (301); The top surface of the sealing cover (202) is evenly mounted with wiring sleeves (301), the top of the wiring sleeve (301) is also mounted with an L-shaped wiring board (302) through bolts, the top of the L-shaped wiring board (302) is also movably connected with a spring clamp (303), the top of the spring clamp (303) is welded with a guide column (306), a plurality of the guide columns (306) are fixedly passed through the movable frame (307), the top surface of the movable frame (307) is symmetrically mounted 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), and a return spring (310) is symmetrically mounted in the gap between the movable frame (307) and the fixed frame (310). 1), a threading hole (312) is provided at a position of the fixed frame (310) corresponding to the guide column (306), a rubber block (313) is embedded inside 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), a connecting plate (316) is slidably clamped on the top surface of the slide bar (315), the connecting plate (316) is fixedly connected to the top surface of the inner part of the outer box (234), a flame retardant plate (317) is installed at both sides of the inner part of the outer box (234) corresponding to the fixed frame (310) by screws, a wire clamping slot plate (318) is evenly clamped and installed on the bottom surface of the flame retardant plate (317), and a wire pressing plate (319) is hingedly installed at one end of the wire clamping slot plate (318).

8. The intelligent transformer that is easy to maintain according to claim 7 is 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 is characterized in that: A clamping hole (304) is provided in the middle of the L-shaped wiring 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.

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