10kV non-power-off small foreign matter insulation removing rod and foreign matter removing method

Abstract

The invention belongs to the technical field of power system distribution line maintenance, and particularly relates to a 10kV uninterrupted small foreign matter insulation removing rod which is characterized by comprising a telescopic 10kV insulating rod, a basic operation head and a quick-change operation head, the top of the telescopic 10kV insulating rod is provided with the basic operation head, and the basic operation head is provided with the quick-change operation head. The invention further relates to a foreign matter removing method of the 10kV non-power-outage small foreign matter insulating removing rod. The light / hard cutting and soft winding quick-change operation head designed by the invention can thoroughly remove small light foreign matters such as kite lines, iron wires, greenhouse films and the like, the field residual rate is reduced to 0% from more than 30%, and the secondary short circuit hidden danger is directly eliminated.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of power system distribution line maintenance, in particular to a 10kV non-power-off small foreign matter insulation removing rod and a foreign matter removing method. BACKGROUND

[0002] In rural and suburban areas, 10kV distribution lines are mostly laid overhead, and there are many exposed points on the lines, which are easily affected by foreign matters. In windy weather, light and small foreign matters such as greenhouse films, plastic bags, kite strings and thin iron wires are easily blown and hung on the conductors or tower insulators, and if not removed in time, it will easily cause line grounding and short circuit faults, seriously affecting power supply reliability.

[0003] At present, there are mainly three schemes for removing foreign matters on overhead lines at home and abroad:

[0004] Manual removal by an insulating rod: The traditional insulating rod can only deal with large and hard foreign matters such as bird nests, and cannot effectively cut off or remove light and flexible foreign matters such as films and kite strings, resulting in a high residual rate of foreign matters on site and easily leading to secondary faults;

[0005] Live working vehicle operation: The live working vehicle is large in size and needs to occupy a large road and site space, and cannot be deployed in narrow terrains such as rural ridges, ditches and greenhouses, and the vehicle needs to be positioned, the legs need to be leveled, and the insulating shielding needs to be arranged, which takes more than 30 minutes, and the vehicle needs to be moved repeatedly when dealing with multiple towers, which takes more than 45 minutes for a single tower;

[0006] Power-off operation: From the discovery of foreign matters to the operation on the tower, the processes of defect reporting, dispatching approval of power-off, notification of power-off to users, handling of work tickets, switching operation, and verification of electricity and hanging of ground wires need to be completed in sequence, which takes an average of 1.5-2 hours, and the time actually used for removing foreign matters is less than 10% of the total time; after the foreign matters are removed, the ground wires need to be removed and the switch needs to be closed to send power, and any abnormality in any link will prolong the power restoration time, which seriously affects the user's power experience.

[0007] In summary, the existing technology has the defects of single removal object, poor terrain adaptability, low operation efficiency, insufficient safety redundancy, and the like, and there is an urgent need for a removal tool and method that can cover multiple types of foreign matters, adapt to complex terrains, and realize non-power-off and rapid operation. SUMMARY

[0008] The purpose of the present application is to overcome the deficiencies in the prior art and provide a 10kV non-power-off small foreign matter insulation removing rod and a foreign matter removing method, which have a wide range of removal objects, good terrain adaptability, are convenient to use, have high operation efficiency, are safe and reliable, and are easy to implement.

[0009] The present application solves the technical problem by the following technical scheme:

[0010] A 10kV live working small foreign matter removing rod is characterized in that it comprises a telescopic 10kV insulating rod, a basic working head and a quick-change working head, the basic working head is installed on the top of the telescopic 10kV insulating rod, and the quick-change working head is installed on the basic working head.

[0011] The basic working head comprises a mounting outer sleeve, a mounting inner core and a connector, the mounting outer sleeve is fixed on the top of the telescopic 10kV insulating rod by means of a pin, the mounting inner core is inserted into the upper end of the mounting outer sleeve and is connected with the mounting outer sleeve by means of the pin, and the connector is inserted into the mounting inner core, the top of the connector is a hexagonal wrench structure, and external threads are arranged on the lower position of the outer wall of the mounting outer sleeve.

[0012] Moreover, the telescopic 10kV insulating rod comprises an outer sleeve rod, an inner inserted rod and a locking hoop, the inner inserted rod is inserted into the top of the outer sleeve rod and is fixed by means of the locking hoop, the locking hoop comprises a hoop belt, a locking bolt, an inner wire adjustable tightening handle, the hoop belt is bent into a circular shape, the two end heads of the hoop belt are outwardly bent to form connecting ears, connecting holes are arranged on the connecting ears, the locking bolt is connected with the connecting holes, and the inner wire adjustable tightening handle is threadedly connected with the locking bolt, vertical openings are arranged at the upper end of the hoop belt, the hoop belt at the vertical openings is inwardly horizontally bent to form a locking eave, and the hoop belt is tightly held on the outer sleeve rod and the inner inserted rod under the action of the inner wire adjustable tightening handle.

[0013] Moreover, the quick-change working head is a shearing device, the shearing device comprises a double-blade shears, a double-blade shears mounting rack and a remote control rope, the double-blade shears mounting rack is integrally formed by injection molding and comprises a mounting vertical rod and a mounting arm which is horizontally arranged on one side of the top of the mounting vertical rod, an inner threaded sleeve is arranged at the bottom of the mounting vertical rod and is threadedly connected with the mounting outer sleeve, the double-blade shears are mounted at the position where the mounting vertical rod and the mounting arm intersect, the double-blade shears comprise a fixed blade and a rotating blade which is hinged with the fixed blade, a driving arm is arranged on the rotating blade and extends to one side of the mounting arm, a first pulley and a second pulley are respectively arranged at the lower end of the mounting arm and the outer wall of the mounting vertical rod, one end of the remote control rope is connected with the driving arm, the other end of the remote control rope naturally drops after sequentially passing through the first pulley and the second pulley, and the double-blade shears are driven by pulling the remote control rope.

[0014] Moreover, the quick-change operating head is a line cutter, the line cutter comprises a line cutter blade and a line cutter mounting frame, the line cutter mounting frame comprises an upper mounting long tongue, a connecting neck and a lower mounting short tongue, the upper mounting long tongue is obliquely arranged at the upper end of the connecting neck, the lower mounting short tongue is vertically arranged at the lower end of the connecting neck, the line cutter blade is clamped and mounted on the upper mounting long tongue through a jackscrew, the lower mounting short tongue is differentially inserted into a slot formed on a hexagonal wrench, connecting holes are arranged on the lower mounting short tongue and the hexagonal wrench, and the lower mounting short tongue and the hexagonal wrench are connected through cooperation of a screw and a nut.

[0015] A small foreign matter removing method of a 10kV live-line small foreign matter insulating removing rod, characterized in that comprising the following steps:

[0016] Step 1, rod body unfolding and fixing: unfolding the telescopic 10kV insulating rod to the required length, and fixing by locking the hoop around the rod body;

[0017] Step 2, operating head selection and assembly: selecting the operating head according to the type of foreign matter: if it is a hard wire or soft winding foreign matter, the quick-change operating head selects a scissors cutter, and the scissors cutter is screw-mounted on the mounting sleeve; if it is a light line foreign matter, the quick-change operating head selects a line cutter;

[0018] Step 3, live-line remote removal: after the operator climbs the rod, maintaining a safety distance of ≥1m from the 10kV live part, controlling the opening and closing of the double-blade scissors blade through the control of the remote control rope, when cutting hard wires or winding soft foreign matters, the remote control rope makes the double-blade scissors close to achieve cutting, and the spring of the double-blade scissors resets after the rope is loosened; when cutting light line foreign matters, the blade of the line cutter cuts off the foreign matter;

[0019] Step 4, rod body retraction and storage: after the foreign matter is removed, the telescopic 10kV insulating rod is retracted, the quick-change operating head is disassembled, and the single-base tower operation is completed.

[0020] The advantages and beneficial effects of the present application are:

[0021] The 10kV live-line small foreign matter insulating removing rod and the foreign matter removing method can remove all kinds of objects:

[0022] The existing insulating rod can only pick up hard and large foreign matters such as bird nests, and cannot deal with light foreign matters such as films and kite lines. The quick-change operating head designed in the present application can completely remove small and light foreign matters such as kite lines, wires and greenhouse films, and the on-site residual rate is reduced from >30% to 0%, directly eliminating the secondary short circuit risk.

[0023] The operation range is not limited by the terrain:

[0024] The traditional bucket live working vehicle needs large space for operation, and cannot enter the ridge and ditch. The telescopic 10kV insulating rod adopts two telescopic structures (shortening 1.8 m, lengthening 3.6 m), the rod body weight is less than or equal to 2 kg, and one person can carry into the narrow channel; it is suitable for any terrain, and realizes "zero land occupation" operation.

[0025] The operation efficiency is improved by more than 6 times:

[0026] The average time consumption from defect report to power restoration of power outage operation is 150 min, and the live bucket arm vehicle preparation is more than 30 min. The present application is free of power outage, switching and shielding, and the whole process of on-site unfolding + foreign matter removal + rod collecting is less than or equal to 10 min; continuous multi-pole tower operation does not need to move the vehicle, the time consumption of single pole is reduced from 45 min to 10 min, and the efficiency is improved by more than 6 times.

[0027] Large insulating safety margin:

[0028] The effective insulating length of the whole rod is more than or equal to 1.8 m, the rod body and the quick-change working head can pass through 45kV / 1min voltage resistance after combination, even if the maximum wind deflection of the conductor still maintains more than 1 m safety distance, and the personnel zero electric shock risk.

[0029] Simple structure and low cost:

[0030] The purchase cost of the traditional 10kV live working vehicle is more than 800,000 yuan. The present application is only composed of "insulating telescopic rod + double-function quick-change working head", the number of parts is less than 20, all can adopt conventional materials such as epoxy resin, ABS plastic and high-carbon steel, the number of molds is small, and the single set manufacturing cost is less than 40,000 yuan, which is 5% of the live working vehicle.

[0031] Easy to use and carry:

[0032] The telescopic 10kV insulating rod and the quick-change working head are designed in a split type, convenient to assemble, different working heads can be replaced according to different foreign matter types, and one person can complete the operation. The whole tool storage length is less than or equal to 1.8 m, and can be carried with the vehicle, which is not different from the ordinary insulating rod. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a structure schematic view of the telescopic 10kV insulating rod and the basic working head assembled in the present application.

[0034] Figure 2 It is a structure schematic view of the basic working head and the locking hoop in the present application;

[0035] Figure 3 It is a sectional view of the telescopic 10kV insulating rod and the basic working head assembled in the present application.

[0036] Figure 4 It is a structure schematic view of the shearing cutter in the present application.

[0037] Figure 5 Structure diagram of the wire cutter assembled with the telescopic 10kV insulating rod of the present application;

[0038] Figure 6 Structure diagram of the wire cutter of the present application.

[0039] Reference signs are:

[0040] 1-base operation head, 2-interpolation rod, 3-locking hoop, 4-outer sleeve rod, 5-hexagonal wrench, 6-mounting outer sleeve, 7-hoop belt, 8-interior thread adjustable tightening handle, 9-connector, 10-mounting inner core, 11-double blade scissors, 12-double blade scissors mounting rack, 13-interior thread sleeve, 14-wire cutting knife, 15-upper mounting long tongue, 16-lower mounting short tongue, 17-spring. DETAILED DESCRIPTION

[0041] The present application will be further described in detail by specific examples below, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present application.

[0042] A 10kV non-power-off small foreign matter insulating removal rod, the innovation of which lies in: comprising a telescopic 10kV insulating rod, a base operation head 1 and a quick-change operation head, the telescopic 10kV insulating rod is used to provide insulating support and adapt to different operation heights, a base operation head is installed at the top of the telescopic 10kV insulating rod, and a quick-change operation head is installed on the base operation head.

[0043] The base operation head comprises a mounting outer sleeve 6, a mounting inner core 10 and a connector 9, a mounting outer sleeve fixed by a pin is sleeved at the top of the telescopic 10kV insulating rod, a mounting inner core is inserted and mounted at the upper end of the mounting outer sleeve, the mounting inner core is connected with the mounting outer sleeve by the pin, and a connector is inserted and mounted in the mounting inner core, the top of the connector is a hexagonal wrench 5 structure, an insertion slot is arranged on the hexagonal wrench, and an outer thread is arranged on the lower position of the outer wall of the mounting outer sleeve.

[0044] The telescopic 10kV insulating rod comprises an outer sleeve rod 4, an inner inserting rod 2 and a locking hoop 3, the inner inserting rod is inserted into the top of the outer sleeve rod, and the outer sleeve rod and the inner inserting rod are locked and fixed by the locking hoop; the locking hoop comprises a hoop band 7, locking bolts and an inner wire adjustable tightening handle 8, the hoop band is bent into a circular shape, the two ends of the hoop band are bent outward to form connecting ears, connecting holes are arranged on the connecting ears, the locking bolts are connected to the connecting holes, and the inner wire adjustable tightening handle is threadedly connected to the locking bolts; vertical openings are arranged at the upper end of the hoop band at intervals, the hoop band at the vertical openings is bent inward horizontally to form a locking eave, and the hoop band is tightly held on the outer sleeve rod and the inner inserting rod under the action of the inner wire adjustable tightening handle. The locking hoop has a certain length, which plays a connecting role and also plays a role in increasing the strength of the rod body, thereby avoiding the problem of instability such as shaking when working due to the long extension.

[0045] The outer sleeve rod and the inner inserting rod of the telescopic 10kV insulating rod are epoxy resin glass fiber rods, the single joint length is 1800mm, the outer diameters are Φ36mm and Φ32mm respectively, the wall thickness is 2mm, the total telescopic range is 1800-3600mm, the bottom of the rod body is provided with an anti-skid handle, and the top is provided with a Φ32mm plug-in type connecting interface.

[0046] The quick-change working head at least comprises a scissors and a line cutter, the scissors is used for cutting 0.5-3.0mm hard iron wires and wound soft foreign matters (such as greenhouse film and canvas), and the line cutter is used for cutting 0.1-1.0mm light line foreign matters (such as kite lines and fishing lines). The specific structure is as follows:

[0047] The quick-change working head is a shearing device, the shearing device comprises a double-blade scissors 11, a double-blade scissors mounting frame 12 and a remote control rope (not shown in the figure), the double-blade scissors mounting frame is an injection molded integrated structure, comprising a mounting vertical rod and a mounting arm horizontally arranged on one side at the top of the mounting vertical rod, an inner threaded sleeve 13 is arranged at the bottom of the mounting vertical rod and is threadedly connected to a mounting outer sleeve, a double-blade scissors is mounted at the position where the mounting vertical rod and the mounting arm intersect, the double-blade scissors comprises a fixed blade and a rotating blade hinged to the fixed blade, a driving arm is arranged on the rotating blade and extends to one side of the mounting arm, the upper end of the driving arm is connected to the fixed blade through a spring 17, a first pulley and a second pulley are respectively mounted at the lower end of the mounting arm and the outer wall of the mounting vertical rod, one end of the remote control rope is connected to the driving arm, the other end of the remote control rope naturally drops after passing through the first pulley and the second pulley in sequence, and the double-blade scissors is driven by pulling the remote control rope.

[0048] The double-blade scissors is made of high-carbon steel, has a symmetrical double-blade opening angle of 60 degrees, a blade length of 45 mm, and a measured cutting force of less than or equal to 30 N, and the blade is automatically reset by a spring after being closed; the remote control rope has a length of 5 m, and the blade of the double-blade scissors is progressively closed inward by pulling the remote control rope, and the blade is reset by the spring after the rope is loosened, thereby ensuring that the cut is neat and has no loose edges.

[0049] The quick-change operating head is a line cutter, the line cutter comprises a line cutter blade 14 and a line cutter mounting rack, the line cutter mounting rack comprises an upper mounting long tongue 15, a connecting neck and a lower mounting short tongue 16, the upper mounting long tongue is obliquely arranged at the upper end of the connecting neck, the lower mounting short tongue is vertically arranged at the lower end of the connecting neck, the line cutter blade is clamped and mounted on the upper mounting long tongue through a top pin, the lower mounting short tongue is inserted into a slot formed on a hexagonal wrench, connecting holes are arranged on the lower mounting short tongue and the hexagonal wrench, and the lower mounting short tongue and the hexagonal wrench are connected through cooperation of a screw and a nut.

[0050] The line cutter is used for cutting a kite line of a motorcycle.

[0051] A foreign matter removing method of a 10kV non-power-off small foreign matter insulating removing rod, which has the following steps:

[0052] Step 1: rod body unfolding and fixing: unfolding the telescopic 10kV insulating rod to the required length, and fixing by locking the hoop around the rod body;

[0053] Step 2: operating head selection and assembly: selecting the operating head according to the type of foreign matter: if it is a hard wire or a soft winding foreign matter, select a scissors cutter as the quick-change operating head, and screw the scissors cutter on the mounting sleeve; if it is a light line foreign matter, select a line cutter as the quick-change operating head;

[0054] Step 3: non-power-off remote removal: after the operator climbs the rod, maintaining a safety distance of greater than or equal to 1 m from the 10kV live part, controlling the opening and closing of the blade of the double-blade scissors through the remote control rope, when cutting hard wire or winding soft foreign matter, the remote control rope makes the double-blade scissors close to realize cutting, and the spring of the double-blade scissors resets after the rope is loosened; when cutting light line foreign matter, the blade of the line cutter cuts the foreign matter;

[0055] Step 4: rod body retraction and storage: after removing the foreign matter, retracting the telescopic 10kV insulating rod, disassembling the quick-change operating head, and completing the single-pole tower operation.

[0056] Taking the removal of greenhouse film (soft) and kite line (light) on a certain rural 10kV overhead line as an example, the specific process is as follows:

[0057] 1. Assembly preparation: the operator carries the cleaning rod (1.8 m in storage state, 1.8 kg in weight) to the site and confirms that the foreign matter type is "soft film + light kite line";

[0058] 2. Rod body deployment: deploy the telescopic 10kV insulating rod from 1800mm to 3.2m (matching line height 3m), lock the locking clamp, and fix the rod body without obvious shaking;

[0059] 3. First foreign matter removal (greenhouse film): install the scissors on the telescopic 10kV insulating rod; maintain a distance of 1.2m from the live wire after climbing the rod, control the double-blade scissors to close through the remote pull rope, wrap the film around the blade, then pull and cut, reset the spring after loosening the rope, and completely cut off the film without residue;

[0060] 4. Operation head replacement: rotate the scissors counterclockwise with one hand, remove the scissors, assemble the wire cutter, and take 45 seconds;

[0061] 5. Second foreign matter removal (kite line): align the wire cutter blade with the kite line by operating the telescopic 10kV insulating rod, then pull it gently, and the kite line is instantly cut off and falls into the safe area;

[0062] 6. Operation completion: retract the telescopic 10kV insulating rod to 1800mm, disassemble the wire cutter, and arrange the tools, which takes a total of 8 minutes, without power interruption and normal power supply to the line.

[0063] When neither of the two quick-change operation heads is used, the basic operation head can also be used as a wrench for disassembling and operating bird repelling devices and other equipment.

[0064] Performance test results

[0065] Insulation performance: the entire rod can withstand 45kV power frequency voltage for 1 minute without breakdown or flashover, meeting the requirements of GB / T 13398-2020 "Live Working Insulating Rod";

[0066] Mechanical strength: the rod body withstands 1000N static tension for 1 minute, the connectors do not slip or deform, and the rod body does not bend;

[0067] Operation efficiency: the total time for processing 3 tower foreign matters is 25 minutes (average 8.3 minutes per tower), which is 74% less than the live working vehicle (3 towers x 45 minutes = 135 minutes);

[0068] Foreign matter removal rate: the removal rate of 0.1mm kite line, 3.0mm iron wire, and 0.5mm thick greenhouse film is 100%, with no residue.

[0069] Although the embodiments of the present application and the drawings disclose the present application for illustrative purposes, those skilled in the art can understand that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present application and the appended claims, and therefore the scope of the present application is not limited to the disclosed embodiments and drawings.

Claims

1. A 10 kV live-line small foreign matter insulation removing rod, characterized in that: The utility model relates to a 10kV insulating pole, which comprises a telescopic 10kV insulating pole, a basic operation head and a quick-change operation head, wherein the basic operation head is mounted on the top of the telescopic 10kV insulating pole, and the quick-change operation head is mounted on the basic operation head. The basic operation head comprises a mounting outer sleeve, a mounting inner core and a connector, wherein the mounting outer sleeve is fixed on the top of the telescopic 10kV insulating pole by means of a pin, the mounting inner core is inserted into the upper end of the mounting outer sleeve and is connected with the mounting outer sleeve by means of the pin, and the connector is inserted into the mounting inner core.

2. The 10 kV live-line small foreign matter removing pole according to claim 1, characterized in that: The telescopic 10kV insulating pole comprises an outer sleeve rod, an inner insertion rod and a locking hoop, wherein the inner insertion rod is inserted into the top of the outer sleeve rod and is locked and fixed between the outer sleeve rod and the inner insertion rod by means of the locking hoop.

3. The 10 kV live-line small foreign matter removing pole according to claim 1, characterized in that: The quick-change operation head is a shearing device, which comprises a double-blade shearing device, a double-blade shearing device mounting frame and a remote control rope.

4. The 10 kV live-line small foreign matter removing pole according to claim 1, characterized in that: The method is based on the 10kV small-insulating-removal pole without power interruption according to any one of claims 1-4, which comprises the following steps:

5. A method for removing foreign matter from a 10kV live-line small foreign matter insulation removal rod, characterized in that: Step 1: pole body unfolding and fixing: unfolding the telescopic 10kV insulating pole to the required length, and fixing the pole body by means of the locking hoop; ​ Step 2, job head selection and assembly: select the job head according to the type of foreign matter: if it is hard wire or soft winding foreign matter, select the scissors cutter for quick change job head, and screw the scissors cutter on the installation sleeve; if it is light wire foreign matter, select the wire cutter for quick change job head; Step 3, remote cleaning without power interruption: after the operator climbs the pole, maintains a safety distance of ≥1m from the 10kV live part, controls the opening and closing of the double-blade scissors blade through the control of the remote control rope, and when cutting hard wire or winding soft foreign matter, the remote control rope makes the double-blade scissors close to achieve cutting, and the spring of the double-blade scissors resets after the rope is loosened; when cutting light wire foreign matter, the blade of the wire cutter cuts off the foreign matter; Step 4, pole body retraction and storage: after the foreign matter is removed, the telescopic 10kV insulating pole is retracted, the quick change job head is disassembled, and the single foundation tower operation is completed.

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