Explosion-proof current transformer with composite porcelain sleeve

Abstract

The invention discloses an explosion-proof current transformer with a composite porcelain bushing, which relates to the technical field of current transformers and comprises a porcelain bushing body, and a shell is arranged at the top of the porcelain bushing body. When the device is used, a hydraulic rod is started, an outer gear is pushed to move upwards to be meshed with an upper inner gear, a forward and reverse motor is started, a connecting rod, the outer gear and the upper inner gear are driven to rotate, a T-shaped plate, a moving rod and a moving strip are further driven to rotate, a second arc-shaped strip is pulled out of a moving groove, and a protective strip is further pulled open; when a moving strip touches a pressure sensor, a PLC controls a positive and negative motor to be turned off, then an electric push rod is controlled to be started, a positioning column is pushed into a positioning groove for limiting, at the moment, a protective strip, a second arc-shaped strip, a first arc-shaped strip, a fixing plate and the moving strip form a protective net, the protective net covers the outer surface of the porcelain sleeve body, and therefore the protective effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of current transformers, in particular to an explosion-proof current transformer with a composite porcelain bushing. Background Art

[0002] A current transformer is a device used to measure, monitor and protect current parameters in power systems. Composite porcelain bushing current transformer is a current transformer with good insulation performance. Its porcelain bushing is made of composite insulation material, which can provide higher insulation strength and better resistance to environmental pollution. The main function of composite porcelain bushing current transformer is to measure the current in the power system and convert the current into corresponding secondary signal output for use by measuring instruments, protection relays and other equipment. It is often used in the fields of metering, protection and automatic control in power systems.

[0003] In the prior art, composite porcelain bushing current transformers may encounter strong winds during outdoor use, which may easily blow up small branches, broken branches, leaves and other debris, causing impact and collision on the porcelain bushing outside the current transformer, resulting in damage to the porcelain bushing, causing the insulation performance of the current transformer to decrease, increasing the risk of electric shock and leakage, and affecting electricity metering and normal operation of equipment.

[0004] Therefore, we propose a composite porcelain bushing explosion-proof current transformer to solve the problems raised in the above background technology. Summary of the invention

[0005] The purpose of the present invention is to provide a composite porcelain bushing explosion-proof current transformer to solve the problem that the composite porcelain bushing current transformer proposed in the above background technology may encounter some strong winds during outdoor use, and some rolled-up debris may collide with the porcelain bushing, causing damage to the porcelain bushing, thereby reducing the insulation performance of the current transformer, increasing the risk of electric shock and leakage, and affecting the power metering and normal operation of the equipment.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a composite porcelain bushing explosion-proof current transformer, comprising: a porcelain bushing body, a shell is arranged on the top of the porcelain bushing body, an expander is arranged inside the shell, a venting bolt is arranged on the top of the expander, a secondary junction box is arranged at the bottom of the porcelain bushing body, a connecting shell is arranged near the bottom of the outer surface of the porcelain bushing body, a protective component is arranged on the outer surface of the connecting shell, the protective component comprises a base, a top plate is arranged on the top of the base, a plurality of protective strips are arranged on the opposite side of the base and the top plate, a plurality of first arc strips are fixedly installed on the outer surface of one side of one of the protective strips, a fixed plate is fixedly installed on the top of the base, a moving strip is arranged on the outer surface of one side of the fixed plate, a plurality of second arc strips are fixedly installed on the outer surface of one side of the moving strip and the outer surface of one side of the other plurality of protective strips, a plurality of movable grooves are opened on the outer surfaces of the other sides of the plurality of protective strips, the outer surfaces of the plurality of second arc strips are respectively movably embedded in the interior of the plurality of movable grooves, and the outer surfaces of the plurality of first arc strips are fixedly installed on the outer surface of the other side of the fixed plate.

[0007] Preferably, a detection component is arranged at the bottom of the base, the detection component comprises a protection box, a plurality of ventilation holes are opened at the bottom of the protection box, an ultrasonic bird repeller is arranged inside the protection box, and a PLC controller is arranged inside the protection box near the ultrasonic bird repeller.

[0008] Preferably, the top of the ultrasonic bird repeller and the top of the PLC controller are both fixedly mounted on the bottom of the base, an outer surface of one of the internal gears is provided with an embedded groove, a camera is arranged inside the embedded groove, and an outer surface of the base is provided with a viewing hole, a transparent plate is fixedly mounted inside the viewing hole.

[0009] Preferably, two arc-shaped grooves are provided on the top of the base and the bottom of the top plate, and a plurality of L-shaped rods are fixedly installed on the outer surfaces of both sides of the plurality of protective strips near the top and the bottom. The plurality of L-shaped rods are evenly divided into four groups, and one end of the four groups of L-shaped rods are movably embedded in the interior of the plurality of arc-shaped grooves.

[0010] Preferably, a fixed cover is fixedly installed on the outer surface of the fixed plate, an electric push rod is fixedly installed on the inner wall of the fixed cover, an arc plate is fixedly installed on one end of the electric push rod, a plurality of positioning columns are fixedly installed on the inner wall of the arc plate, a slot is opened on the outer surface of one side of the fixed plate, one end of the plurality of positioning columns are movable and penetrate into the interior of the slot, and the inner wall of the arc plate is in contact with the outer surface of the fixed plate.

[0011] Preferably, a card plate is fixedly installed on the outer surface of the other side of the movable bar, and the outer surface of the card plate is movably embedded in the inside of the card slot. A plurality of positioning grooves are provided on the outer surface of the card plate, and one end of a plurality of the positioning columns are respectively movably embedded in the inside of the plurality of positioning grooves. A detection groove is provided on the outer surface of one side of the fixed plate near the top, and a pressure sensor is arranged inside the detection groove.

[0012] Preferably, a fixing seat is fixedly installed on the bottom of the base, a hydraulic rod is fixedly installed on the bottom surface of the fixing seat, a mounting plate is fixedly installed on the top of the hydraulic rod, a forward and reverse motor is fixedly installed on the top of the mounting plate, a connecting rod is fixedly installed on the output end of the forward and reverse motor, an external gear is fixedly installed on the top of the connecting rod, a movable hole is opened at the bottom of the base near the fixing seat, the outer surface of the connecting rod is movably embedded in the movable hole, two internal gears are movably embedded in the base, and the outer surface of the external gear is meshed with the inside of one of the internal gears.

[0013] Preferably, a T-shaped plate is fixedly installed on the top of the other internal gear near the edge, a moving rod is fixedly installed on the top of the T-shaped plate, the outer surface of the moving rod is fixedly installed inside the moving bar, a sliding hole is opened on the top of the base, a sliding groove is opened on the bottom of the top plate, the top end of the moving rod is movably embedded in the inside of the sliding groove, and the outer surface of the moving rod is movably embedded in the inside of the sliding hole.

[0014] Preferably, a support groove is provided on the inner wall of one side of the base, and the outer surface of one side of the T-shaped plate is movably embedded in the support groove. Rotation grooves are provided on the top and bottom of the two internal gears, and a plurality of limit rods are movably embedded in the two rotation grooves. The plurality of limit rods are evenly divided into two groups, and one end of the two groups of limit rods are respectively fixedly mounted on the top and bottom surfaces inside the base.

[0015] Preferably, a plurality of T-shaped rods are fixedly mounted on an inner wall of one side of the base, and both ends of the plurality of T-shaped rods are movably embedded in the other two rotating grooves respectively, the top plate is mounted on the outer surface of the shell by bolts, the base is mounted on the outer surface of the connecting shell by bolts, and the top of the fixed plate is fixedly mounted on the bottom of the top plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is used, the hydraulic rod is started to push the mounting plate, the forward and reverse motors and the connecting rod to move upward, so that the outer gear meshes with the upper inner gear, and the forward and reverse motors are started to drive the connecting rod, the outer gear and the upper inner gear to rotate, and further drive the T-plate, the moving rod and the moving bar to rotate, and the second arc-shaped bar is pulled out from the corresponding movable groove, and the protective bar is further pulled open. When the moving bar touches the pressure sensor, the PLC controller controls the forward and reverse motors to turn off, and then controls the electric push rod to start, and pushes the positioning column into the positioning groove for limiting. At this time, the protective bar, the second arc-shaped bar, the first arc-shaped bar, the fixed plate and the moving bar form a protective net, which covers the outer surface of the porcelain sleeve body, thereby achieving a protective effect to prevent the rolled-up objects from colliding with the porcelain sleeve body in windy weather, causing damage or breakage and explosion.

[0017] 2. When the present invention is used, after the hydraulic rod resumes working, it will pull the mounting plate, the forward and reverse motor and the outer gear downward to reset, so that the outer gear meshes with the inner gear below, and start the forward and reverse motor again to drive the inner gear below to rotate forward and reverse, drive the camera to rotate forward and reverse, and take images of the situation outside the porcelain bushing body. When the PLC controller recognizes that there are birds approaching in the image, the PLC controller will trigger the ultrasonic bird repeller to start, drive the birds away from the surrounding area of ​​the porcelain bushing body, and prevent the birds from staying or nesting on the porcelain bushing current transformer and affecting the transformer.

[0018] 3. When the present invention is used, the protection can be automatically turned on through the protection component. There is no need for the staff to manually push the moving bar to prevent accidental hand pinching. The electric push rod is started again to pull the arc plate to reset, drive the positioning column to leave the positioning groove, and then push the moving bar in the opposite direction to shrink the multiple protection bars and the second arc bar together. At this time, the outer surface of the porcelain bushing body is exposed in a larger area, which is convenient for the staff to check the external condition of the porcelain bushing body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front perspective view of a composite porcelain bushing explosion-proof current transformer of the present invention; Figure 2 This is a bottom-up stereoscopic diagram of a composite porcelain bushing explosion-proof current transformer of the present invention; Figure 3 It is a structural cross-sectional expanded stereoscopic diagram of a composite porcelain bushing explosion-proof current transformer of the present invention; Figure 4 It is a structural cross-sectional expanded stereoscopic diagram of a moving bar in a composite porcelain bushing explosion-proof current transformer of the present invention; Figure 5 It is a structural cross-sectional expanded stereoscopic diagram of a base in a composite porcelain bushing explosion-proof current transformer of the present invention; Figure 6It is a structural sectional expanded stereoscopic diagram of a fixing seat in a composite porcelain bushing explosion-proof current transformer of the present invention; Figure 7 This is a structural sectional expanded stereoscopic diagram of a transparent plate in a composite porcelain bushing explosion-proof current transformer of the present invention; Figure 8 This is a structural expansion stereogram of a detection component in a composite porcelain bushing explosion-proof current transformer of the present invention; Fig. 9 It is a structural sectional expanded stereoscopic diagram of a fixing plate in a composite porcelain bushing explosion-proof current transformer of the present invention; Fig.10 This is a structural expansion stereogram of a clamping plate in a composite porcelain bushing explosion-proof current transformer of the present invention; Fig.11 The present invention is a three-dimensional diagram of the structure of the top plate of a composite porcelain bushing explosion-proof current transformer.

[0020] In the figure: 1, porcelain bushing body; 2, shell; 3, secondary junction box; 4, protection assembly; 401, base; 402, top plate; 403, transparent plate; 404, fixed seat; 405, fixed plate; 406, fixed cover; 407, protection bar; 408, second arc bar; 409, first arc bar; 410, arc groove; 411, slide groove; 412, hydraulic rod; 413, slide hole; 414, moving rod; 415, moving bar; 416, movable groove; 417, L-shaped rod; 418, internal gear; 419, rotating groove; 420, limit rod; 421, T-shaped rod; 422, T Mould plate; 423, forward and reverse motor; 424, connecting rod; 425, supporting groove; 426, visual hole; 427, moving hole; 428, mounting plate; 429, external gear; 430, electric push rod; 431, arc plate; 432, pressure sensor; 433, detection groove; 434, card slot; 435, positioning groove; 436, positioning column; 437, card plate; 5, detection component; 501, protective box; 502, ultrasonic bird repeller; 503, air vent; 504, PLC controller; 505, embedded groove; 506, camera; 6, connecting shell; 7, expander; 8, bleed bolt. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 11As shown, the present invention provides a technical solution: a composite porcelain bushing explosion-proof current transformer, comprising: a porcelain bushing body 1, a shell 2 is arranged on the top of the porcelain bushing body 1, an expander 7 is arranged inside the shell 2, a venting bolt 8 is arranged on the top of the expander 7, a secondary junction box 3 is arranged at the bottom of the porcelain bushing body 1, a connecting shell 6 is arranged near the bottom of the outer surface of the porcelain bushing body 1, a protective component 4 is arranged on the outer surface of the connecting shell 6, the protective component 4 includes a base 401, a top plate 402 is arranged on the top of the base 401, and a plurality of protective strips 407 are arranged on the opposite side of the base 401 and the top plate 402, wherein one of the protective strips 407 A plurality of first arc-shaped bars 409 are fixedly installed on the outer surface of one side, a fixed plate 405 is fixedly installed on the top of the base 401, a movable bar 415 is arranged on the outer surface of one side of the fixed plate 405, a plurality of second arc-shaped bars 408 are fixedly installed on the outer surface of one side of the movable bar 415 and the outer surfaces of one side of another plurality of protective bars 407, a plurality of movable grooves 416 are opened on the outer surfaces of the other sides of the plurality of protective bars 407, the outer surfaces of the plurality of second arc-shaped bars 408 are respectively movably embedded in the inside of the plurality of movable grooves 416, and the outer surfaces of one side of the plurality of first arc-shaped bars 409 are fixedly installed on the outer surface of the other side of the fixed plate 405.

[0023] At the same time according to Figure 1-Figure 3 and Figure 8 As shown, a detection component 5 is arranged at the bottom of the base 401, and the detection component 5 includes a protective box 501. A plurality of air holes 503 are provided at the bottom of the protective box 501. An ultrasonic bird repeller 502 is arranged inside the protective box 501. A PLC controller 504 is arranged near the ultrasonic bird repeller 502 inside the protective box 501. The ultrasonic bird repeller 502 is started by triggering the PLC controller 504 to drive birds away from the surrounding area of ​​the porcelain bushing body 1, thereby achieving the effect of driving away birds and preventing birds from staying or nesting on the porcelain bushing current transformer and affecting the transformer.

[0024] according to Figure 3 and Figure 6-Figure 8 As shown, the top of the ultrasonic bird repeller 502 and the top of the PLC controller 504 are both fixedly mounted on the bottom of the base 401, an inner groove 505 is provided on the outer surface of one of the inner gears 418, a camera 506 is arranged inside the inner groove 505, a visual hole 426 is provided on the outer surface of the base 401, a transparent plate 403 is fixedly mounted inside the visual hole 426, the camera 506 and the transparent plate 403 can be used to capture the external situation of the porcelain sleeve body 1, and the captured image is transmitted to the PLC controller 504 for identification and comparison in the form of electrical signals, thereby controlling the ultrasonic bird repeller 502.

[0025] according to Figure 2 , Figure 4-Figure 5 and Figure 9-11As shown, two arc grooves 410 are provided on the top of the base 401 and the bottom of the top plate 402, and multiple L-shaped rods 417 are fixedly installed on the outer surfaces of both sides of the multiple protection strips 407 near the top and the bottom. The multiple L-shaped rods 417 are evenly divided into four groups, and one end of the four groups of L-shaped rods 417 are movably embedded in the interior of the multiple arc grooves 410, so that when the protection strips 407 move, the multiple L-shaped rods 417 can be driven to rotate in the arc grooves 410, which is beneficial to provide stability during the rotation of the protection strips 407.

[0026] according to Figure 1-Figure 3 and Figure 9-10 As shown, a fixed cover 406 is fixedly installed on the outer surface of the fixed plate 405, and an electric push rod 430 is fixedly installed on the inner wall of the fixed cover 406. An arc plate 431 is fixedly installed on one end of the electric push rod 430, and a plurality of positioning posts 436 are fixedly installed on the inner wall of the arc plate 431. A card slot 434 is opened on the outer surface of one side of the fixed plate 405, and one end of the plurality of positioning posts 436 are movable and penetrate into the interior of the card slot 434. The inner wall of the arc plate 431 contacts the outer surface of the fixed plate 405. By starting the electric push rod 430 again, the arc plate 431 is pulled to reset, and the positioning posts 436 are driven to leave the positioning slot 435. At this time, the moving bar 415 loses its limit, and then the moving bar 415 is pushed, so that the second arc bar 408 enters the movable slot 416, and the plurality of protective strips 407 and the second arc bar 408 are further contracted together. At this time, a large area of ​​the outer surface of the porcelain bushing body 1 is exposed, which is convenient for the staff to check the external condition of the porcelain bushing body 1.

[0027] according to Figure 9-10 As shown, a card plate 437 is fixedly installed on the outer surface of the other side of the moving bar 415, and the outer surface of the card plate 437 is movably embedded in the inside of the card slot 434. A plurality of positioning slots 435 are provided on the outer surface of the card plate 437, and one end of a plurality of positioning columns 436 are movably embedded in the inside of the plurality of positioning slots 435. A detection slot 433 is provided near the top on the outer surface of one side of the fixed plate 405, and a pressure sensor 432 is arranged inside the detection slot 433. The card plate 437 is fixed by the positioning column 436 and the positioning slot 435, so as to fix the moving bar 415, and further limit the plurality of protection strips 407 and the second arc strip 408 that are unfolded in a ring, so as to prevent the subsequent protection strips 407 or the second arc strip 408 from loosening and affecting the protection effect. The pressure sensor 432 facilitates the PLC controller 504 to control the closing of the forward and reverse motors 423.

[0028] according to Figure 1-Figure 8As shown, a fixing seat 404 is fixedly installed at the bottom of the base 401, a hydraulic rod 412 is fixedly installed on the bottom surface inside the fixing seat 404, a mounting plate 428 is fixedly installed on the top of the hydraulic rod 412, a forward and reverse motor 423 is fixedly installed on the top of the mounting plate 428, a connecting rod 424 is fixedly installed on the output end of the forward and reverse motor 423, an external gear 429 is fixedly installed on the top of the connecting rod 424, a moving hole 427 is opened at the bottom of the base 401 near the fixing seat 404, the outer surface of the connecting rod 424 is movably embedded in the moving hole 427, two internal gears 418 are movably embedded in the base 401, the outer surface of the external gear 429 is meshed with the inside of one of the internal gears 418, by starting the hydraulic rod 412, the mounting plate 428 and the forward and reverse motor 423 are pushed to move upward through the moving hole 427, and the external gear 429 is meshed with the upper internal gear 418 through the connecting rod 424, so as to facilitate the subsequent rotation of the upper internal gear 418.

[0029] according to Figure 4-Figure 7 , Fig. 9 and Fig.11 As shown, a T-plate 422 is fixedly installed on the top of another internal gear 418 near the edge, and a moving rod 414 is fixedly installed on the top of the T-plate 422. The outer surface of the moving rod 414 is fixedly installed inside the moving bar 415. A sliding hole 413 is provided on the top of the base 401, and a sliding groove 411 is provided on the bottom of the top plate 402. The top of the moving rod 414 is movably embedded in the sliding groove 411, and the outer surface of the moving rod 414 is movably embedded in the sliding hole 413. The rotation of the T-plate 422 facilitates the moving rod 414 to rotate in the sliding hole 413 and the sliding groove 411, and then drives the moving bar 415 to rotate on the outer surface of the porcelain sleeve body 1. The sliding hole 413 facilitates the rotation of the moving rod 414, and the sliding groove 411 is conducive to improving the stability of the rotation of the moving rod 414.

[0030] according to Figure 5-Figure 8 As shown, a support groove 425 is provided on the inner wall of one side of the base 401, and an outer surface of one side of the T-shaped plate 422 is movably embedded in the support groove 425. A rotation groove 419 is provided on the top and bottom of the two internal gears 418, wherein a plurality of limit rods 420 are movably embedded in the two rotation grooves 419, and the plurality of limit rods 420 are evenly divided into two groups, and one end of the two groups of limit rods 420 are respectively fixedly mounted on the top and bottom surfaces inside the base 401, and the T-shaped plate 422 can be auxiliary supported by the support groove 425 to improve its stability, and the two internal gears 418 can be auxiliary supported by the limit rods 420.

[0031] according to Figure 3-Figure 5 , Figure 7-Figure 8 and Fig.11As shown, a plurality of T-shaped rods 421 are fixedly installed on the inner wall of one side of the base 401, and the two ends of the plurality of T-shaped rods 421 are movably embedded in the inside of the other two rotating grooves 419 respectively, the top plate 402 is installed on the outer surface of the shell 2 by bolts, the base 401 is installed on the outer surface of the connecting shell 6 by bolts, and the top of the fixing plate 405 is fixedly installed on the bottom of the top plate 402. Through the cooperation of the T-shaped rod 421 and the limiting rod 420, the two internal gears 418 are supported and limited to improve their stability.

[0032] The effect and working principle of the whole mechanism are as follows: when in use, the structure of the second arc strip 408 matches the internal structure of the movable groove 416, the hydraulic rod 412, the forward and reverse motor 423, the electric push rod 430, the pressure sensor 432, the ultrasonic bird repellent 502, the camera 506 and the PLC controller 504 are electrically connected, and the composite porcelain bushing current transformer is mainly composed of a porcelain bushing body 1, a shell 2, a secondary junction box 3, a connecting shell 6, an expander 7 and a venting bolt 8. A secondary set is arranged inside the secondary junction box 3. The porcelain bushing body The body 1 is provided with a primary winding and a capacitor insulating bushing, and the shell 2 is provided with an expander 7, a bleed bolt 8, an observation window and a terminal block, etc. The expander 7 can completely isolate the transformer oil inside the transformer from the air to prevent the transformer oil from being damp, aging and deteriorating. When there is gas inside the transformer, the bleed bolt 8 can be loosened to release the internal gas to prevent the internal gas amount from gradually increasing and the air pressure from increasing, causing the porcelain bushing body 1 to explode. After the composite porcelain bushing current transformer is installed, it is powered on and the electronic devices are powered by an external power supply. Figure 1The middle protection strip 407 and the second arc strip 408 are both in the unfolded state. When not in use, the second arc strip 408 is embedded in the movable groove 416, and the multiple protection strips 407 are retracted together. The protection assembly 4 is sleeved on the outer surface of the porcelain sleeve body 1, and the hydraulic rod 412 is started to push the mounting plate 428 and the forward and reverse motor 423 to move upward through the moving hole 427, and then push the connecting rod 424 and the outer gear 429 to move upward, so that the outer gear 429 moves from the inside of the inner gear 418 below to the inside of the inner gear 418 above. When the output end of the hydraulic rod 412 is fully pushed out, the hydraulic rod 412 will pause for a while, at which time the outer gear 429 is meshed with the inner gear 418 above, and the moving rod 41 4 moves to the interior of the lower inner gear 418, then starts the forward and reverse motor 423, and drives the connecting rod 424 and the outer gear 429 to rotate through the rotation of the output end of the forward and reverse motor 423, and then drives the upper inner gear 418 to rotate, and further drives the T-shaped plate 422 to rotate inside the support groove 425 and the base 401. The T-shaped plate 422 can be auxiliary supported by the support groove 425 to improve its stability. The rotation of the T-shaped plate 422 drives the moving rod 414 to rotate inside the sliding hole 413 and the sliding groove 411, and then drives the moving bar 415 to rotate on the outer surface of the porcelain sleeve body 1, and pulls out the connected multiple second arc bars 408 from the corresponding movable grooves 416. The structure of the second arc bar 408 is as shown in FIG. Fig.10As shown, the connected protection strip 407 is further pulled to rotate, thereby pulling apart the plurality of second arc strips 408 and the plurality of protection strips 407, and wrapping around the outer surface of the porcelain sleeve body 1 in a ring shape. As the moving strip 415 rotates, it gradually gets closer and closer to the fixed plate 405, so that the card plate 437 gradually enters the card slot 434. When the moving strip 415 touches the detection head of the pressure sensor 432, pressure is generated on the pressure sensor 432. The pressure sensor 432 transmits the detected pressure signal to the PLC controller 504 in the form of an electrical signal. After receiving the pressure signal, the PLC controller 504 controls the forward and reverse motors 423 to turn off and stop the output end from rotating. At this time, the card plate 437 is just embedded in the card slot 434. , multiple positioning grooves 435 are aligned with multiple positioning columns 436, and then the PLC controller 504 controls the electric push rod 430 to start, push the arc plate 431 to move, and further push the multiple positioning columns 436 to move into the corresponding positioning grooves 435, and fix the card plate 437 through the positioning columns 436 and the positioning grooves 435, so as to fix the moving bar 415, and further limit the multiple protection bars 407 and the second arc bar 408 that are unfolded in an annular shape, so as to prevent the subsequent protection bars 407 or the second arc bar 408 from loosening and affecting the protection effect. At this time, the protection bar 407, the second arc bar 408, the first arc bar 409, the fixed plate 405 and the moving bar 415 form a protection net, which covers the outer surface of the porcelain sleeve body 1 , thereby achieving a protective effect and preventing the rolled-up objects from colliding with the porcelain bushing body 1 in windy weather, causing damage or breakage and explosion. This solves the problem that when the composite porcelain bushing current transformer is used outdoors, some windy weather may occur, and some rolled-up debris may collide with the porcelain bushing, causing damage to the porcelain bushing, thereby reducing the insulation performance of the current transformer, increasing the risk of electric shock and leakage, and affecting the normal operation of electric energy metering and equipment. The protection can be automatically turned on by the protection component 4, and the staff does not need to manually push the moving bar 415 to prevent accidental pinching of the hand. When the protection bar 407 moves, it will drive multiple L-shaped rods 417 to rotate in the arc groove 410, which is conducive to providing stability during the rotation of the protection bar 407 At this time, the hydraulic rod 412 resumes working, pulling the mounting plate 428, the forward and reverse motor 423 and the outer gear 429 downward to reset, so that the outer gear 429 meshes with the inner gear 418 below, and then starts the camera 506, and starts the forward and reverse motor 423 again, and the rotation of the output end of the forward and reverse motor 423 drives the inner gear 418 below to rotate, and further drives the camera 506 to rotate. The rotation path of the output end of the forward and reverse motor 423 is set in advance. After rotating the set path, it will rotate in the opposite direction, thereby realizing the forward and reverse rotation of the inner gear 418 below, and driving the camera 506 to rotate forward and reverse. The camera 506 and the transparent plate 403 can be used to capture images of the situation outside the porcelain sleeve body 1.The captured image is transmitted to the PLC controller 504 in the form of an electrical signal for identification and comparison. The PLC controller 504 stores the image of the bird in advance. When the PLC controller 504 identifies that there is a bird approaching in the image, the PLC controller 504 triggers the ultrasonic bird repellent 502 to start, and transmits high-frequency ultrasonic signals to interfere with the bird's perception system, driving the bird away from the surrounding area of ​​the porcelain bushing body 1, thereby achieving the effect of repelling birds, preventing birds from staying or nesting on the porcelain bushing current transformer and affecting the transformer. By starting the electric push rod 430 again, the arc plate 431 is pulled to reset, driving the positioning column 436 to leave the positioning groove 435, at this time, the moving bar 415 loses its limit, and then the moving bar 415 is pushed, so that the second arc bar 408 enters the movable groove 416, and further shrinks the multiple protection bars 407 and the second arc bar 408 together. At this time, the outer surface of the porcelain bushing body 1 is exposed to a large area, which is convenient for the staff to check the external situation of the porcelain bushing body 1.

[0033] Among them, the porcelain sleeve body 1, hydraulic rod 412, forward and reverse motor 423, electric push rod 430, pressure sensor 432, ultrasonic bird repeller 502, camera 506, PLC controller 504, and expander 7 are all existing technologies, and their components and usage principles are all public technologies, so no excessive explanation will be given here.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A composite porcelain bushing explosion-proof current transformer, characterized in that: include: A porcelain bushing body (1), a shell (2) is arranged on the top of the porcelain bushing body (1), an expander (7) is arranged inside the shell (2), a venting bolt (8) is arranged on the top of the expander (7), a secondary junction box (3) is arranged on the bottom of the porcelain bushing body (1), a connecting shell (6) is arranged on the outer surface of the porcelain bushing body (1) near the bottom, a protective component (4) is arranged on the outer surface of the connecting shell (6), the protective component (4) comprises a base (401), a top plate (402) is arranged on the top of the base (401), and a plurality of protective strips (407) are arranged on the opposite side of the base (401) and the top plate (402), wherein one side of the outer surface of one of the protective strips (407) has a A plurality of first arc-shaped strips (409) are fixedly installed, a fixed plate (405) is fixedly installed on the top of the base (401), a movable strip (415) is arranged on the outer surface of one side of the fixed plate (405), a plurality of second arc-shaped strips (408) are fixedly installed on the outer surface of one side of the movable strip (415) and the outer surface of one side of another plurality of protective strips (407), a plurality of movable grooves (416) are provided on the outer surfaces of the other sides of the plurality of protective strips (407), the outer surfaces of the plurality of second arc-shaped strips (408) are respectively movably embedded in the interior of the plurality of movable grooves (416), and the outer surfaces of one side of the plurality of first arc-shaped strips (409) are fixedly installed on the outer surface of the other side of the fixed plate (405).

2. The composite porcelain bushing explosion-proof current transformer according to claim 1, characterized in that: A detection component (5) is arranged at the bottom of the base (401), the detection component (5) comprising a protection box (501), a plurality of air holes (503) are provided at the bottom of the protection box (501), an ultrasonic bird repeller (502) is arranged inside the protection box (501), and a PLC controller (504) is arranged inside the protection box (501) near the ultrasonic bird repeller (502).

3. The composite porcelain bushing explosion-proof current transformer according to claim 2 is characterized in that: The top of the ultrasonic bird repeller (502) and the top of the PLC controller (504) are both fixedly mounted on the bottom of the base (401); an inner groove (505) is provided on the outer surface of one of the inner gears (418); a camera (506) is arranged inside the inner groove (505); a visual hole (426) is provided on the outer surface of the base (401); a transparent plate (403) is fixedly mounted inside the visual hole (426).

4. The composite porcelain bushing explosion-proof current transformer according to claim 1, characterized in that: The top of the base (401) and the bottom of the top plate (402) are each provided with two arc-shaped grooves (410), and a plurality of L-shaped rods (417) are fixedly installed on the outer surfaces of both sides of the plurality of protection strips (407) near the top and the bottom, and the plurality of L-shaped rods (417) are evenly divided into four groups, and one end of the four groups of L-shaped rods (417) are respectively movably embedded in the interior of the plurality of arc-shaped grooves (410).

5. The composite porcelain bushing explosion-proof current transformer according to claim 4, characterized in that: A fixing cover (406) is fixedly mounted on the outer surface of the fixing plate (405), an electric push rod (430) is fixedly mounted on the inner wall of the fixing cover (406), an arc-shaped plate (431) is fixedly mounted on one end of the electric push rod (430), a plurality of positioning columns (436) are fixedly mounted on the inner wall of the arc-shaped plate (431), a slot (434) is provided on the outer surface of one side of the fixing plate (405), one end of the plurality of positioning columns (436) are movably inserted into the interior of the slot (434), and the inner wall of the arc-shaped plate (431) is in contact with the outer surface of the fixing plate (405).

6. The composite porcelain bushing explosion-proof current transformer according to claim 5, characterized in that: A card plate (437) is fixedly mounted on the outer surface of the other side of the movable bar (415); the outer surface of the card plate (437) is movably embedded in the interior of the card slot (434); a plurality of positioning slots (435) are provided on the outer surface of the card plate (437); one end of a plurality of positioning columns (436) are movably embedded in the interior of the plurality of positioning slots (435); a detection slot (433) is provided on the outer surface of one side of the fixed plate (405) near the top; a pressure sensor (432) is provided inside the detection slot (433).

7. The composite porcelain bushing explosion-proof current transformer according to claim 6, characterized in that: A fixing seat (404) is fixedly mounted on the bottom of the base (401), a hydraulic rod (412) is fixedly mounted on the bottom surface of the fixing seat (404), a mounting plate (428) is fixedly mounted on the top of the hydraulic rod (412), a forward and reverse motor (423) is fixedly mounted on the top of the mounting plate (428), a connecting rod (424) is fixedly mounted on the output end of the forward and reverse motor (423), an external gear (429) is fixedly mounted on the top of the connecting rod (424), a movable hole (427) is opened at the bottom of the base (401) near the fixing seat (404), the outer surface of the connecting rod (424) is movably embedded in the movable hole (427), two internal gears (418) are movably embedded in the base (401), and the outer surface of the external gear (429) is meshed with the inside of one of the internal gears (418).

8. The composite porcelain bushing explosion-proof current transformer according to claim 7, characterized in that: A T-shaped plate (422) is fixedly installed on the top of the other internal gear (418) near the edge, a moving rod (414) is fixedly installed on the top of the T-shaped plate (422), the outer surface of the moving rod (414) is fixedly installed inside the moving bar (415), a sliding hole (413) is opened on the top of the base (401), a sliding groove (411) is opened on the bottom of the top plate (402), the top of the moving rod (414) is movably embedded in the inside of the sliding groove (411), and the outer surface of the moving rod (414) is movably embedded in the inside of the sliding hole (413).

9. The composite porcelain bushing explosion-proof current transformer according to claim 8, characterized in that: A support groove (425) is provided on an inner wall of one side of the base (401); an outer surface of one side of the T-shaped plate (422) is movably embedded in the support groove (425); a rotation groove (419) is provided on the top and bottom of the two internal gears (418); a plurality of limit rods (420) are movably embedded in the two rotation grooves (419); the plurality of limit rods (420) are evenly divided into two groups; one end of the two groups of limit rods (420) are respectively fixedly mounted on the top and bottom surfaces inside the base (401).

10. The composite porcelain bushing explosion-proof current transformer according to claim 9, characterized in that: A plurality of T-shaped rods (421) are fixedly mounted on an inner wall of one side of the base (401), and two ends of the plurality of T-shaped rods (421) are movably embedded in the interior of the other two rotating grooves (419), respectively; the top plate (402) is mounted on the outer surface of the shell (2) by means of bolts; the base (401) is mounted on the outer surface of the connecting shell (6) by means of bolts; and the top of the fixing plate (405) is fixedly mounted on the bottom of the top plate (402).

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