CN112615311A - Fault point positioning device for power transmission line inspection - Google Patents
Fault point positioning device for power transmission line inspection Download PDFInfo
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- CN112615311A CN112615311A CN202011582421.1A CN202011582421A CN112615311A CN 112615311 A CN112615311 A CN 112615311A CN 202011582421 A CN202011582421 A CN 202011582421A CN 112615311 A CN112615311 A CN 112615311A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
- H02G1/1202—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof by cutting and withdrawing insulation
- H02G1/1248—Machines
- H02G1/1265—Machines the cutting element rotating about the wire or cable
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
- H02G1/1202—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof by cutting and withdrawing insulation
- H02G1/1248—Machines
- H02G1/127—Features relating to cutting elements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
- H02G1/1275—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof by applying heat
- H02G1/1278—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof by applying heat using heated blades
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/16—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for repairing insulation or armouring of cables
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Cable Installation (AREA)
Abstract
The invention provides a fault point positioning device for power transmission line inspection, which is used for detecting a power transmission line and comprises current detection boxes respectively arranged at two ends of the power transmission line; guide rods are arranged at the front side and the rear side of the power transmission line, and a moving mechanism with a box body internally provided with an ultrasonic detector is arranged on each guide rod; an arc-shaped groove is formed in one side, located on the ultrasonic detector, of the inner wall of the box body; the arc groove is internally and slidably connected with a sliding plate which is provided with a first screw rod up and down, the upper part and the lower part of the first screw rod with opposite directions are respectively provided with a first moving block and a second moving block, the first moving block and the second moving block are both connected with mounting seats, one side of each of the two mounting seats facing each other is provided with a semicircular groove, the left end and the right end in each semicircular groove are respectively provided with a vertical arc cutter, and a transverse cutter is arranged between the two vertical arc cutters; one side of the sliding plate is provided with a glue supplementing mechanism. According to the invention, the insulation layer at the aged part on the power transmission line is removed through the cooperation of the transverse cutter and the vertical arc cutter, and then the insulation glue is supplemented to the aged part, so that the repairing effect is good.
Description
Technical Field
The invention relates to the field of transmission line faults, in particular to a fault point positioning device for transmission line inspection.
Background
Along with the constantly quickening of economic development speed, the number of kilometers of the Hainan distribution network constantly increases, distribution overhead line total volume promotes by a wide margin, because transmission line is outdoor use, consequently, the transmission line is after long-term the use, and the local position of the outer insulating layer of transmission line can appear ageing for the effect of the isolated current leakage of insulation of this department descends, makes the electric leakage quantity great in transportation process, influences transmission line's normal transport function. Therefore, fault points on the transmission line need to be monitored and processed; in order to solve the problem, some manufacturers invent a fault point patrol device, patrol and detect the transmission line through an ultrasonic detector, further quickly determine the position of a fault point, and control a glue supplementing assembly to supplement glue on the local position of an aged insulating layer to improve the insulating effect of the position, but the fault point patrol device has the following defects: firstly, a layer of insulating glue is directly supplemented on the outer surface of the fault position of the insulating layer, so that the insulating effect is not ideal; secondly, mend and glue the subassembly and can remain to glue and block up the export after the completion of glue, be inconvenient for use next time.
Disclosure of Invention
The invention aims to solve at least one of the technical problems in the related technology to a certain extent, and therefore the invention provides a fault point positioning device for power transmission line inspection.
The technical scheme of the invention is realized as follows:
a fault point positioning device for power transmission line inspection is used for detecting a power transmission line, wherein the device comprises current detection boxes symmetrically arranged at two ends of the power transmission line, and the two current detection boxes are both in signal connection with a controller; guide rods are symmetrically arranged on the front side and the rear side of the power transmission line, a moving mechanism driven by a motor is arranged on each guide rod, and a driver of the motor is in signal connection with the controller; the moving mechanism is provided with a box body, an ultrasonic detector is arranged in the box body, an arc-shaped groove is formed in one side, located on the ultrasonic detector, of the inner wall of the box body, and the rotation center of the arc-shaped groove and the circle center of the power transmission line are located at the same position; a sliding plate driven by a first driving mechanism is connected in the arc groove in a sliding mode, a first screw driven by a first motor is arranged on the sliding plate in the vertical direction, a first threaded portion and a second threaded portion which are opposite in rotation direction are arranged on the upper portion and the lower portion of the first screw respectively, a first moving block and a second moving block are arranged on the first threaded portion and the second threaded portion respectively, the first moving block and the second moving block are connected with mounting seats respectively through connecting rods, semicircular grooves are formed in one sides, facing each other, of the two mounting seats respectively, vertical arc cutters are arranged at the left end and the right end in each semicircular groove respectively, and a transverse cutter is arranged between the two vertical arc cutters; a glue supplementing mechanism is arranged on one side of the sliding plate, which is far away from the ultrasonic detector, and comprises four second electric telescopic rods respectively arranged on the upper, lower, front and rear inner side walls of the box body, the telescopic end of each second electric telescopic rod is provided with an arc plate, when the second electric telescopic rods extend out, the four arc plates surround a round hole in transition fit with the power transmission line, a through hole is arranged on the arc plate at the rear side along the front and rear direction, a charging barrel is arranged on the rear side wall of the box body along the front and rear direction, an extrusion screw rod for conveying glue solution is arranged in the charging barrel, the extrusion screw rod is driven by a second motor to rotate, one end of the extrusion screw rod is flush with a port at the discharge end of the charging barrel, the discharge end of the charging barrel is sleeved in the through hole, and a first heating component is arranged on the outer, and a storage tank filled with granular raw materials for preparing insulating cement is communicated with the side wall of one end, facing the inner wall of the box body, of the charging barrel.
Further, a first partition plate and a second partition plate are sequentially arranged in the box body from left to right, through circular grooves for transmission wires to pass through are formed in the first partition plate and the second partition plate, the interior of the box body is sequentially divided into a first cavity, a second cavity and a third cavity from left to right through the first partition plate and the second partition plate, the ultrasonic detector is arranged in the first cavity, the sliding plate is arranged in the second cavity, and the glue supplementing mechanism is arranged in the third cavity; and a second heating assembly is arranged in the second cavity.
Further, the second heating element is including setting up U-shaped heating pipe on the inner wall of second cavity and with the power that U-shaped heating pipe electricity is connected, U-shaped heating pipe electricity is connected with the bimetallic strip temperature switch of its break-make of control, bimetallic strip temperature switch is used for detecting temperature in the second cavity, be provided with between horizontal cutter and two vertical arc swoves with the heater strip that the power electricity is connected, the heater strip with U-shaped heating pipe is parallelly connected.
Furthermore, the first partition plate comprises a first plate and a second plate which are respectively arranged on the upper wall and the lower wall in the box body, a third moving plate and a fourth moving plate which are provided with semicircular holes are respectively embedded into one end, facing each other, of the first plate and one end, facing each other, of the second plate in a sliding mode, the two semicircular holes form the through circular groove in an enclosing mode, and a first spring is arranged between the third moving plate and the first plate and between the fourth moving plate and the second plate.
Furthermore, the first driving mechanism comprises a first electric telescopic rod arranged on the inner top wall of the box body, the telescopic end of the first electric telescopic rod is connected with a driving rod, and the other end of the driving rod is hinged on the sliding plate.
Furthermore, first heating element is including a plurality of heating blocks, and is a plurality of the heating block encircle in the feed cylinder is located the feed inlet and is located the rear side the peripheral face of part between the circular arc board.
Furthermore, the current detection box comprises a collection box arranged on a tower, a power transmission line interface is arranged on the side wall of one side of the collection box, a power transmission line outlet is arranged on the side wall of the other side of the collection box, a circuit board is arranged on the inner top wall of the collection box, the input end of the circuit board is connected with the power transmission line interface, the output end of the circuit board is connected with the power transmission line outlet, and a current sensor in signal connection with the controller is arranged on the circuit board.
Furthermore, the moving mechanism comprises an installation plate, four corners of the installation plate are respectively provided with first idler wheels, two first idler wheels positioned at the left end and two first idler wheels positioned at the right end are respectively arranged into a group, a connecting shaft is arranged between each group of first idler wheels, a first gear is arranged on the connecting shaft positioned at the left end, and the output end of the motor is connected with a second gear meshed with the first gear; each first idler wheel is connected with a second idler wheel through a connecting plate, and the first idler wheels and the second idler wheels are respectively abutted to the upper side face and the lower side face of the guide rod.
Further, rectangular logical groove has been arranged along upper and lower direction to the lateral wall lower extreme of connecting plate, the pivot of second gyro wheel is passed through the bearing and is rotated the connection and be in rectangular logical inslot, rectangular logical inslot is provided with the second spring, the one end of second spring with rectangular lower wall connection that leads to the groove, the other end of second spring with the lower extreme of bearing is connected.
Further, the motor is arranged in the middle of the lower end of the mounting plate in the front-back direction, and a third gear and a fourth gear which are meshed with the second gear are respectively arranged on the left side and the right side of the second gear; and a fifth gear meshed with the fourth gear is arranged on the connecting shaft at the right end.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, the arc-shaped groove is arranged on one side of the ultrasonic detector on the inner wall of the box body, when the ultrasonic detector detects the position of the power transmission line with aging, the moving mechanism moves to the aging position of the power transmission line corresponding to the two semicircular grooves, then the first motor drives the first screw rod to rotate, the first moving block and the second moving block are close to each other due to the opposite rotating directions of the first thread part and the second thread part, so that the two mounting seats are close to each other, the vertical arc cutter and the transverse cutter which are positioned at the upper end and the lower end are close to each other and cut into the insulating layer at the aging position of the power transmission line, then circular motion around the center of the power transmission line is carried out along the arc-shaped groove under the driving of the first driving mechanism, so that the insulating layer at the aging position is cut off, and then the glue supplementing mechanism, the second electric telescopic handle stretches out afterwards, make four circular arc boards be close to each other and form the round hole of encircleing the power transmission line, carry the round hole through the through-hole through extruding the screw rod with the insulating glue solution that forms through the heating afterwards and form the new insulating layer of one deck parcel in ageing department, owing to extrude the screw rod and can be with in the round hole that four circular arc boards enclose of quantitative transport of insulating glue solution, make insulating glue solution fill the ageing department of getting rid of the insulating layer and form new insulating layer, and the thickness of new insulating layer and original insulating layer is unanimous basically, repair is effectual.
(2) According to the invention, the discharge end of the charging barrel is sleeved in the through hole, namely after the glue supplementing operation is finished, the insulating glue solution in the through hole is pushed out by the discharge end of the charging barrel in the process that the arc plate at the rear end is driven by the second electric telescopic rod to move away from the power transmission line, so that the phenomenon that the insulating glue solution is remained in the through hole to cause blockage after the glue supplementing operation is finished and the next glue supplementing operation is influenced is avoided; meanwhile, one end of the extrusion screw is flush with the port of the discharge end of the charging barrel, so that the extrusion screw basically conveys the insulating glue in the charging barrel to the aging part where the insulating layer is removed under the driving of a second motor to form a new insulating layer; after the single glue filling operation is completed, basically no insulating glue solution is remained at the port of the discharge end of the charging barrel, and the effect of preventing glue blockage is better.
(3) According to the invention, granular raw materials are stored in the storage tank, and when glue supplementing operation is required, the granular raw materials are fed into the charging barrel, and the charging barrel can be heated by the first heating assembly, so that the granular raw materials are dissolved into insulating glue solution, and the insulating glue solution is conveyed into a circular hole surrounded by four circular arc plates through the through hole under the spiral conveying of the extrusion screw, so that a new insulating layer is formed at the aging part where the insulating layer is removed, compared with the situation that the insulating glue solution is stored in the glue tank in the prior art, the insulating glue solution is pumped to the aging part by the infusion pump for glue supplementing during the glue supplementing operation, the problem that the coagulation effect is poor after the insulating glue solution is stored in the glue tank for a long time exists; the invention can melt the granular raw materials into the insulating glue solution with proper temperature according to the actual requirement and then carry out glue repairing work, and the repairing effect is good.
(4) According to the invention, the current amount passing through two ends of the power transmission line is detected by the two current detection boxes and fed back to the controller for comparison, when the difference value of the two current values exceeds a set value, an aged fault point exists on the power transmission line between the two current detection boxes, then the moving mechanism is controlled to perform inspection tour detection along the length direction of the power transmission line, the fault point is repaired, the labor intensity of workers is reduced, and the automatic level is high.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a portion of the structure of FIG. 1;
FIG. 3 is an enlarged schematic view at A in FIG. 2;
FIG. 4 is a schematic view of an assembly structure of the sliding plate, the first motor, the first screw, the mounting seat and the first driving mechanism according to an embodiment of the present invention;
FIG. 5 is an enlarged schematic view at B in FIG. 4;
FIG. 6 is an enlarged schematic view at C of FIG. 4;
FIG. 7 is a schematic structural diagram of a mounting seat on which a vertical arc cutter and a horizontal cutter are mounted in the embodiment of the invention;
FIG. 8 is a schematic diagram of a portion of an embodiment of the present invention;
FIG. 9 is a schematic diagram of the electrical connections of the U-shaped heater, heater wire and power supply in an embodiment of the present invention;
FIG. 10 is a schematic view of a transmission structure of a motor and a first roller according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a current detection box in an embodiment of the invention.
Reference numerals:
100 power lines, 200 guide rods;
310 motor, 320 mounting plate, 330 first roller, 340 connecting shaft, 350 first gear, 360 second gear, 370 second hobbing, 380 connecting plate, 381 long through groove, 382 bearing, 383 second spring, 391 third gear, 392 fourth gear, 393 fifth gear;
400 box, 410 ultrasonic detector, 420 arc-shaped groove, 430 first partition, 431 first plate, 432 second plate, 433 third moving plate, 434 fourth moving plate, 435 first spring, 440 second partition, 450 circular groove, 460 first cavity, 470 second cavity, 480 third cavity;
510 a sliding plate, 520 a first motor, 530 a first screw rod, 531 a first thread part, 532 a second thread part, 540 a first moving block, 550 a second moving block, 560 a connecting rod, 570 a mounting seat, 571 a semicircular groove, 580 a vertical arc cutter and 590 a transverse cutter;
610 a second electric telescopic rod, 620 a circular arc plate, 621 a circular hole, 622 a through hole, 530 a charging barrel, 640 an extrusion screw, 650 a second motor, 660 a material storage tank and 670 a heating block;
a 710U-shaped heating pipe, a 720 bimetallic strip temperature switch and a 730 heating wire;
810 a first electric telescopic rod, 820 driving rod;
910 collection box, 920 circuit board, 930 current sensor.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to the orientation description, such as "upper", "lower", "front", "rear", "left", "right", etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if there is any description of "first", "second", etc. for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1, 2, 4, 5 and 6, a fault point locating device for power transmission line inspection according to an embodiment of the present invention is used for detecting a power transmission line 100, wherein the device includes current detection boxes symmetrically arranged at the left and right ends of the power transmission line 100, and both the current detection boxes are connected with a controller through signals; the front side and the rear side of the power transmission line 100 are symmetrically provided with guide rods 200, the guide rods 200 are provided with moving mechanisms driven by a motor 310, and a driver of the motor 310 is in signal connection with a controller; the moving mechanism is provided with a box body 400, an ultrasonic detector 410 is arranged in the box body 400, an arc-shaped groove 420 is arranged on one side, located on the ultrasonic detector 410, of the inner wall of the box body 400, and the rotation center of the arc-shaped groove 420 and the circle center of the power transmission line 100 are located at the same position; a sliding plate 510 driven by a first driving mechanism is connected in the arc groove in a sliding manner, a first screw 530 driven by a first motor 520 is arranged on the sliding plate 510 along the up-down direction, a first thread portion 531 and a second thread portion 532 with opposite rotation directions are respectively arranged at the upper portion and the lower portion of the first screw 530, a first moving block 540 and a second moving block 550 are respectively arranged on the first thread portion 531 and the second thread portion 532, the first moving block 540 and the second moving block 550 are respectively connected with an installation base 570 through a connecting rod 560, semicircular grooves 571 are respectively arranged at the mutually facing sides of the two installation bases 570, a vertical arc knife 580 is respectively arranged at the left end and the right end in each semicircular groove 571, and a transverse cutter 590 is arranged between the two vertical arc knives 580; one side of the sliding plate 510 departing from the ultrasonic detector 410 is provided with a glue supplementing mechanism, the glue supplementing mechanism comprises four second electric telescopic rods 610 respectively arranged on the upper, lower, front and rear inner side walls of the box 400, the telescopic end of each second electric telescopic rod 610 is provided with an arc plate 620, when the second electric telescopic rods 610 extend out, the four arc plates 620 enclose a round hole 621 in transition fit with the power transmission line 100, a through hole 622 is arranged on the arc plate 620 positioned on the rear side along the front and rear direction, a charging barrel 630 is arranged on the rear side wall of the box 400 along the front and rear direction, an extrusion screw 640 for conveying glue is arranged in the charging barrel 630, the extrusion screw 640 is driven to rotate by a second motor 650, one end of the extrusion screw 640 is flush with a port of a discharge end of the charging barrel 630, the discharge end of the charging barrel 630 is sleeved in the through hole 622, a first heating assembly is arranged on the outer wall of the charging barrel 630, and one end side wall of the charging barrel. It is understood that the operation principle of the ultrasonic detector 410 is to transmit ultrasonic waves of a certain frequency to the power transmission line 100, and to detect the presence or absence of internal damage to the insulation layer of the power transmission line 100 by detecting the intensity, phase and spectrum of the reflected waves. Note that the controller was a model 3072LA controller.
Compared with the prior art, in the embodiment of the invention, the arc-shaped groove 420 is arranged on one side of the ultrasonic detector 410 on the inner wall of the box 400, when the ultrasonic detector 410 detects the position of the aging of the power transmission line 100, the moving mechanism moves to the position where the two semi-circular grooves 571 correspond to the aging of the power transmission line 100, then the first motor 520 drives the first screw 530 to rotate, due to the fact that the rotation directions of the first thread part 531 and the second thread part 532 are opposite, the first moving block 540 and the second moving block 550 are close to each other, so that the two mounting seats 570 are close to each other, the vertical arc knife 580 and the transverse knife 590 positioned at the upper end and the lower end are close to each other and cut into the insulation layer at the aging of the power transmission line 100, then the first driving mechanism is driven to make a circular motion around the center of the power transmission line 100 along the arc-shaped groove 420, so as to cut off the insulation layer at the aging position, then second electric telescopic handle 610 stretches out for four circular arc boards 620 are close to each other and form the round hole 621 that wraps power transmission line 100, carry the insulating glue solution that forms through the heating through the through-hole 622 afterwards and form the new insulating layer of one deck parcel in ageing department in round hole 621 through extruding screw 640, owing to extrude screw 640 can be with in the round hole 621 that four circular arc boards 620 enclose is carried to insulating glue solution ration, make insulating glue solution fill in the ageing department of getting rid of the insulating layer and form new insulating layer, and the thickness of new insulating layer and original insulating layer is unanimous basically, repair is effectual. Meanwhile, the discharge end of the charging barrel 630 is sleeved in the through hole 622, namely after the glue supplementing work is finished, the insulating glue solution in the through hole 622 is pushed out by the discharge end of the charging barrel 630 in the process that the arc plate 620 at the rear end is driven by the second electric telescopic rod 610 to move away from the power transmission line 100, so that the phenomenon that the insulating glue solution is remained in the through hole 622 after the glue supplementing work is finished to cause blockage and influence the next glue supplementing work is avoided; and one end of the extrusion screw 640 is flush with the port of the discharge end of the material barrel 630, so that the extrusion screw 640 basically conveys the insulating glue solution in the material barrel 630 to the aged part where the insulating layer is removed under the driving of the second motor 650 to form a new insulating layer; after the single glue filling operation is completed, basically no insulating glue solution is remained at the port of the discharge end of the charging barrel 630, and the effect of preventing glue blockage is better. The granular raw materials are stored in the storage tank 660, and are sent into the material cylinder 630 when glue supplementing operation is needed, the material cylinder 630 can be heated by the first heating assembly, so that the granular raw materials are dissolved into insulating glue, and the insulating glue is conveyed into the round hole 621 surrounded by the four arc plates 620 through the through hole 622 under the spiral conveying of the extrusion screw 640, so that a new insulating layer is formed at the aging part where the insulating layer is removed, compared with the prior art that the insulating glue is stored in the glue tank, the insulating glue is pumped to the aging part through the infusion pump for glue supplementing operation, and the problem that the condensation effect is poor after the insulating glue is stored in the glue tank for a long time exists; according to the embodiment of the invention, the granular raw materials can be firstly melted into the insulating glue solution with proper temperature according to actual needs, and then the glue repairing work is carried out, so that the repairing effect is good; the embodiment of the invention also detects the current amount passing through two ends of the power transmission line 100 through the two current detection boxes, feeds the current amount back to the controller for comparison, indicates that an aged fault point exists on the power transmission line 100 between the two current detection boxes when the difference value of the two current values exceeds a set value, then controls the moving mechanism to perform inspection tour detection along the length direction of the power transmission line 100, and repairs the fault point, thereby reducing the labor intensity of workers and achieving high automatic level.
As shown in fig. 1 and 2, in some embodiments of the present invention, a first partition 430 and a second partition 440 are sequentially disposed from left to right in a box 400, a circular through groove 450 for passing the power transmission line 100 is disposed on each of the first partition 430 and the second partition 440, the first partition 430 and the second partition 440 sequentially divide the interior of the box 400 from left to right into a first cavity 460, a second cavity 470 and a third cavity 480, the ultrasonic detector 410 is disposed in the first cavity 460, the sliding plate 510 is disposed in the second cavity 470, and the glue filling mechanism is disposed in the third cavity 480; a second heating element is disposed within the second cavity 470. Through dividing the inside of box 400 into three independent spaces to make before vertical arc sword 580 and horizontal cutter 590 get rid of the insulating layer of the ageing department of power transmission line 100, heat the inside of second cavity 470 through the second heating element earlier, make the insulating layer of the ageing department of power transmission line 100 that is located in second cavity 470 be heated and soften, make vertical arc sword 580 and the horizontal cutter 590 of upper end and lower extreme close to each other and cut into the insulating layer that ageing smoothly under the drive of first movable block 540 and second movable block 550, and do the circular motion around the centre of a circle of power transmission line 100 along arc groove 420 under the drive of first actuating mechanism, thereby peel off the insulating layer of ageing department, so that the work of subsequent benefit glue repair goes on.
As shown in fig. 2, 4, 7 and 9, preferably, the second heating assembly includes a U-shaped heating pipe 710 disposed on an inner wall of the second cavity 470 and a power supply electrically connected to the U-shaped heating pipe 710, the U-shaped heating pipe 710 is electrically connected to a bimetal temperature switch 720 for controlling on/off of the U-shaped heating pipe, the bimetal temperature switch 720 is used for detecting a temperature in the second cavity 470, a heating wire 730 electrically connected to the power supply is disposed between the transverse cutter 590 and the two vertical arc knives 580, and the heating wire 730 is connected in parallel to the U-shaped heating pipe 710. The inside of the second cavity 470 and the transverse cutter 590 and the two vertical arc cutters 580 are heated by the U-shaped heating pipe 710, so that the insulation layer at the aging position of the power transmission line 100 is softened by heating while preheating the transverse cutter 590 and the two vertical arc cutters 580, and then the transverse cutter 590 and the vertical arc cutters 580 at the upper end and the lower end are driven by the first moving block 540 and the second moving block 550 to approach each other, press and cut into the softened insulation layer, and rotate to peel off the insulation layer at the aging position. Carry out real-time detection to the temperature in the second cavity 470 through bimetallic strip temperature switch 720, and when the temperature in the second cavity 470 rose to the setting value, automatic disconnection made U-shaped heating pipe 710 stop heating, ensure that the insulating layer did not melt, control horizontal cutter 590 and vertical arc sword 580 feed afterwards, in-process heating wire 730 at the feed lasts ohmic heating, make horizontal cutter 590 and vertical arc sword 580 further heat the softening to the insulating layer at the feed in-process, reduce the insulating layer hardness, the feed, the cutting is convenient, the insulating layer is peeled off in the rotation. It will be appreciated that the transverse cutter 590 and the vertical arc cutter 580 are formed of high quality tool steel that can withstand high temperatures through heat treatment, do not rust during annealing, and do not break.
As shown in fig. 2 and 3, the first partition 430 preferably includes a first plate 431 and a second plate 432 respectively disposed at upper and lower walls of the case 400, a third moving plate 433 and a fourth moving plate 434 having semicircular holes are slidably fitted to facing ends of the first plate 431 and the second plate 432, respectively, the semicircular holes form a circular through groove 450, and a first spring 435 is disposed between the third moving plate 433 and the first plate 431 and between the fourth moving plate 434 and the second plate 432. With the arrangement, when the local size of the power transmission line 100 is increased, the third moving plate 433 and the fourth moving plate 434 are far away from each other by the adjusting action of the first spring 435, so that the two semicircular holes are far away from each other, and the phenomenon that the power transmission line 100 is blocked and cannot move due to the local size of the power transmission line 100 is avoided. It is understood that the first separator 430 and the second separator 440 have the same structure.
As shown in fig. 2 and 4, in some embodiments of the present invention, the first driving mechanism includes a first electric telescopic rod 810 disposed at an inner top wall of the casing 400, a driving rod 820 is connected to a telescopic end of the first electric telescopic rod 810, and the other end of the driving rod 820 is hinged to the sliding plate 510. By means of the arrangement, after the transverse cutter 590 and the vertical arc cutter 580 at the upper end and the lower end are extruded to cut into the insulation layer at the aging part, the first electric telescopic rod 810 is started to extend out, so that the driving rod 820 drives the sliding plate 510 to rotate along the arc-shaped groove 420, and then the transverse cutter 590 and the vertical arc cutter 580 are enabled to cut the insulation layer at the aging part in a rotating mode, and the insulation layer is peeled.
In some embodiments of the invention, as shown in fig. 8, the first heating assembly comprises a plurality of heating blocks 670, and the plurality of heating blocks 670 surround the outer periphery of the portion of the barrel 630 between the feeding port and the circular arc plate 620 at the rear side. The heating block 670 surrounds the outer circumferential surface of the charging barrel 630 so as to heat the interior of the charging barrel 630, so that the granular raw materials are dissolved into the insulating glue solution and are spirally output to the aged part where the insulating layer is removed by the extrusion screw 640 for repairing.
As shown in fig. 11, in some embodiments of the present invention, the current detection box includes a collection box 910 for being mounted on a tower, a power line 100 interface is mounted on a sidewall of one side of the collection box 910, a power line 100 outlet is mounted on a sidewall of the other side of the collection box 910, a circuit board 920 is disposed on an inner top wall of the collection box 910, an input end of the circuit board 920 is connected to the power line 100 interface, an output end of the circuit board 920 is connected to the power line 100 outlet, and a current sensor 930 connected to a controller via a signal is mounted on the circuit board 920. The input end of the power transmission line 100 is connected to the interface of the power transmission line 100, and the other end is connected to the outlet of the power transmission line 100, so that the current sensor 930 monitors the current change condition on the power transmission line 100 in real time, and feeds the collected current information back to the controller, so that the controller compares the current amount at the two ends of the power transmission line 100, and the fault can be found out in time and the positioning and repairing can be carried out.
As shown in fig. 1, 2 and 10, in an embodiment of the present invention, the moving mechanism includes a mounting plate 320, four corners of the mounting plate 320 are respectively provided with a first roller 330, two first rollers 330 at the left end and two first rollers 330 at the right end are respectively arranged as a group, a connecting shaft 340 is arranged between each group of first rollers 330, wherein a first gear 350 is arranged on the connecting shaft 340 at the left end, and the output end of the motor 310 is connected with a second gear 360 engaged with the first gear 350; each first roller 330 is connected to a second roller 370 through a connecting plate 380, and the first roller 330 and the second roller 370 are respectively abutted to the upper and lower sides of the guide bar 200. With such an arrangement, when the moving mechanism needs to be driven to move left and right along the guide rod 200, the controller controls the motor 310 to be started, so that the second gear 360 drives the first gear 350 to rotate, and further the first roller 330 rotates, thereby realizing the function of moving left and right. The first roller 330 and the second roller 370 are respectively abutted to the upper end and the lower end of the guide rod 200, so that the moving mechanism is kept stable in the process of moving left and right, and the situation of side turning is avoided.
As shown in fig. 2, preferably, a long through groove 381 is arranged at the lower end of the side wall of the connecting plate 380 in the up-down direction, the rotating shaft of the second roller 370 is rotatably connected in the long through groove 381 through a bearing 382, a second spring 383 is arranged in the long through groove 381, one end of the second spring 383 is connected to the lower bottom wall of the long through groove 381, and the other end of the second spring 383 is connected to the lower end of the bearing 382. With the arrangement, when the local thickness of the guide rod 200 is changed, the size of the distance between the first roller 330 and the second roller 370 can be adjusted to adapt through the adjusting action of the second spring 383, so that the phenomenon that the moving mechanism is clamped and cannot move due to the fact that the local thickness of the guide rod 200 is increased is avoided.
As shown in fig. 2 and 3, preferably, the motor 310 is disposed at the lower middle portion of the mounting plate 320 in the front-rear direction, and the left and right sides of the second gear 360 are provided with a third gear 391 and a fourth gear 392, respectively, which are engaged with the second gear 360; the connecting shaft 340 at the right end is provided with a fifth gear 393 engaged with the fourth gear 392. With the arrangement, after the motor 310 is started, the two connecting shafts 340 can be driven to rotate through gear transmission, so that the four first rollers 330 can rotate synchronously, and the moving mechanism can move left and right stably under the guiding action of the guide rod 200. It will be appreciated that the third gear 391 and the fourth gear 392 are identical gears, and the first gear 350 and the fifth gear 393 are identical gears, ensuring that the four first rollers 330 rotate at the same speed and that the moving mechanism moves smoothly.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A fault point positioning device for power transmission line inspection is used for detecting a power transmission line and is characterized by comprising current detection boxes symmetrically arranged at two ends of the power transmission line, wherein both the current detection boxes are in signal connection with a controller; guide rods are symmetrically arranged on the front side and the rear side of the power transmission line, a moving mechanism driven by a motor is arranged on each guide rod, and a driver of the motor is in signal connection with the controller; the moving mechanism is provided with a box body, an ultrasonic detector is arranged in the box body, an arc-shaped groove is formed in one side, located on the ultrasonic detector, of the inner wall of the box body, and the rotation center of the arc-shaped groove and the circle center of the power transmission line are located at the same position; a sliding plate driven by a first driving mechanism is connected in the arc groove in a sliding mode, a first screw driven by a first motor is arranged on the sliding plate in the vertical direction, a first threaded portion and a second threaded portion which are opposite in rotation direction are arranged on the upper portion and the lower portion of the first screw respectively, a first moving block and a second moving block are arranged on the first threaded portion and the second threaded portion respectively, the first moving block and the second moving block are connected with mounting seats respectively through connecting rods, semicircular grooves are formed in one sides, facing each other, of the two mounting seats respectively, vertical arc cutters are arranged at the left end and the right end in each semicircular groove respectively, and a transverse cutter is arranged between the two vertical arc cutters; a glue supplementing mechanism is arranged on one side of the sliding plate, which is far away from the ultrasonic detector, and comprises four second electric telescopic rods respectively arranged on the upper, lower, front and rear inner side walls of the box body, the telescopic end of each second electric telescopic rod is provided with an arc plate, when the second electric telescopic rods extend out, the four arc plates surround a round hole in transition fit with the power transmission line, a through hole is arranged on the arc plate at the rear side along the front and rear direction, a charging barrel is arranged on the rear side wall of the box body along the front and rear direction, an extrusion screw rod for conveying glue solution is arranged in the charging barrel, the extrusion screw rod is driven by a second motor to rotate, one end of the extrusion screw rod is flush with a port at the discharge end of the charging barrel, the discharge end of the charging barrel is sleeved in the through hole, and a first heating component is arranged on the outer, and a storage tank filled with granular raw materials for preparing insulating cement is communicated with the side wall of one end, facing the inner wall of the box body, of the charging barrel.
2. The fault point positioning device for power transmission line inspection according to claim 1, wherein a first partition plate and a second partition plate are sequentially arranged in the box body from left to right, through circular grooves for power transmission lines to pass through are formed in the first partition plate and the second partition plate, the first partition plate and the second partition plate divide the interior of the box body into a first cavity, a second cavity and a third cavity from left to right, the ultrasonic detector is arranged in the first cavity, the sliding plate is arranged in the second cavity, and the glue supplementing mechanism is arranged in the third cavity; and a second heating assembly is arranged in the second cavity.
3. The fault point positioning device for the inspection of the power transmission line according to claim 2, wherein the second heating component comprises a U-shaped heating pipe arranged on the inner wall of the second cavity and a power supply electrically connected with the U-shaped heating pipe, the U-shaped heating pipe is electrically connected with a bimetallic strip temperature switch for controlling the on-off of the U-shaped heating pipe, the bimetallic strip temperature switch is used for detecting the temperature in the second cavity, a heating wire electrically connected with the power supply is arranged between the transverse cutter and the two vertical arc knives, and the heating wire is connected with the U-shaped heating pipe in parallel.
4. The fault point positioning device for power transmission line inspection according to claim 2, wherein the first partition plate comprises a first plate and a second plate which are respectively arranged at the upper wall and the lower wall in the box body, a third moving plate and a fourth moving plate with semicircular holes are respectively embedded at the mutually facing ends of the first plate and the second plate in a sliding manner, the two semicircular holes form the through circular groove in an enclosing manner, and a first spring is arranged between the third moving plate and the first plate and between the fourth moving plate and the second plate.
5. The fault point positioning device for power transmission line inspection according to claim 1, wherein the first driving mechanism comprises a first electric telescopic rod arranged on the inner top wall of the box body, the telescopic end of the first electric telescopic rod is connected with a driving rod, and the other end of the driving rod is hinged to the sliding plate.
6. The fault point positioning device for power transmission line inspection according to claim 1, wherein the first heating assembly comprises a plurality of heating blocks, and the plurality of heating blocks surround the outer circumferential surface of the charging barrel between the feeding hole and the arc plate at the rear side.
7. The fault point positioning device for power transmission line inspection according to claim 1, wherein the current detection box comprises a collection box installed on a tower, a power transmission line interface is installed on a side wall of one side of the collection box, a power transmission line outlet is installed on a side wall of the other side of the collection box, a circuit board is arranged on an inner top wall of the collection box, an input end of the circuit board is connected with the power transmission line interface, an output end of the circuit board is connected with the power transmission line outlet, and a current sensor in signal connection with the controller is installed on the circuit board.
8. The fault point positioning device for power transmission line inspection according to claim 1, wherein the moving mechanism comprises a mounting plate, four corners of the mounting plate are respectively provided with first rollers, two first rollers positioned at the left end and two first rollers positioned at the right end are respectively arranged into a group, a connecting shaft is arranged between each group of the first rollers, a first gear is arranged on the connecting shaft positioned at the left end, and the output end of the motor is connected with a second gear meshed with the first gear; each first idler wheel is connected with a second idler wheel through a connecting plate, and the first idler wheels and the second idler wheels are respectively abutted to the upper side face and the lower side face of the guide rod.
9. The fault point positioning device for the inspection of the power transmission lines according to claim 8, wherein a long through groove is formed in the lower end of the side wall of the connecting plate in the up-down direction, a rotating shaft of the second idler wheel is rotatably connected in the long through groove through a bearing, a second spring is arranged in the long through groove, one end of the second spring is connected with the lower bottom wall of the long through groove, and the other end of the second spring is connected with the lower end of the bearing.
10. The fault point positioning device for power transmission line inspection according to claim 8, wherein the motor is arranged in the middle of the lower end of the mounting plate in the front-rear direction, and a third gear and a fourth gear which are meshed with the second gear are respectively arranged on the left side and the right side of the second gear; and a fifth gear meshed with the fourth gear is arranged on the connecting shaft at the right end.
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| CN113690795A (en) * | 2021-10-09 | 2021-11-23 | 国网江苏省电力有限公司灌云县供电分公司 | 220 kilovolt transmission line wire repairing device |
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| CN114325552A (en) * | 2021-11-26 | 2022-04-12 | 国网河北省电力有限公司武安市供电分公司 | Metering live-line investigation instrument for serial households |
| CN114825189A (en) * | 2022-05-18 | 2022-07-29 | 国网陕西省电力有限公司电力科学研究院 | Automatic stripping and cutting device and method for high-voltage cable insulating layer |
| CN115930853A (en) * | 2023-01-06 | 2023-04-07 | 国网山东省电力公司滨州供电公司 | Grounding down lead film coating thickness detection tool and detection process thereof |
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| CN114825189B (en) * | 2022-05-18 | 2024-03-08 | 国网陕西省电力有限公司电力科学研究院 | Automatic stripping and cutting device and method for high-voltage cable insulating layer |
| CN115930853A (en) * | 2023-01-06 | 2023-04-07 | 国网山东省电力公司滨州供电公司 | Grounding down lead film coating thickness detection tool and detection process thereof |
| CN115930853B (en) * | 2023-01-06 | 2023-08-08 | 国网山东省电力公司滨州供电公司 | Grounding downlead film thickness detection tool and detection process thereof |
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