CN109994961B - Device and method for replacing pole-mounted switch of vertically arranged 10kV overhead line with load - Google Patents
Device and method for replacing pole-mounted switch of vertically arranged 10kV overhead line with load Download PDFInfo
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- CN109994961B CN109994961B CN201910036112.5A CN201910036112A CN109994961B CN 109994961 B CN109994961 B CN 109994961B CN 201910036112 A CN201910036112 A CN 201910036112A CN 109994961 B CN109994961 B CN 109994961B
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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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Abstract
The invention relates to the technical field of live working of distribution networks, in particular to a device and a method for replacing a pole-mounted switch of a vertically arranged 10kV overhead line under load. The device comprises a shunt line cross arm fixing frame, a shunt line assembly and an insulating operating rod; the shunt line assemblies are fixed on the shunt line cross arm fixing frame, each shunt line assembly comprises a shunt line main pipe and a soft high-voltage line, two ends of the shunt line main pipe are respectively connected with one soft high-voltage line, one end of each soft high-voltage line is connected with the shunt line main pipe, and the other end of each soft high-voltage line is connected with the high-voltage line; the shunt line cross arm fixing frame is fixed on the cross arm and is matched with the insulating operation rod, and the shunt line cross arm fixing frame is fixed on the cross arm through the insulating operation rod. The invention realizes the shunting of the insulating rod operation method, reduces the shielding workload, greatly reduces the operation time and labor intensity, and reduces the power failure range and time.
Description
Technical Field
The invention relates to the technical field of live working of distribution networks, in particular to a device and a method for replacing a pole-mounted switch of a vertically arranged 10kV overhead line under load.
Background
Along with the continuous improvement of the material culture living standard of people, the stable electric power supply is more and more dependent, and the tolerance degree for the length of the power failure time is lower and lower. In 10KV power distribution operation, the time spent for replacing the pole-mounted switch in line transformation is long in various operations, the pole-mounted switch belongs to a key-mounted process on a key-mounted line, and obvious economic and social benefits are achieved by shortening the operation time of the process. In the existing operation, for the on-load replacement pole switch operation of the vertically arranged lines, an effective method for fixing the split insulation drainage wire is not available, so that the drainage wire cannot keep an effective safety distance with adjacent wires.
The invention patent with the domestic application number of 2016108081862 discloses a method for indirectly bypass live replacement of a pole-mounted switch of a 10KV line insulating rod, which comprises the following steps: s1, setting up a temporary operation platform; s2, installing a drop-out type disconnecting link cross arm at the top of the temporary operation platform, and fixing a bypass cable cross arm; s3, measuring the distance between the pile head of each phase of drop-off type disconnecting link and the corresponding lead, and manufacturing three branch lead wires according to the distance; s4, placing the insulating shielding cover on the two-side phase lead wires so as to prevent the two-side phase lead wires from contacting with the middle phase lead wires when the middle phase lead wires are lapped; s5, mounting the three-phase lead wire on the pile head of the corresponding drop-out type disconnecting link; s6, lapping the middle phase lead wire, and removing the insulating shielding cover; s7, overlapping the two-side phase leads, and arranging a drop insulation shielding baffle. By adopting the steps, the operation process of the load side temporary platform operation point can be effectively realized, the operation process of the load side can be standardized, the production accidents are reduced, and the maintenance efficiency is improved. Although a plurality of steps are disclosed in the patent, the specific structure of the related insulation drainage wire is not provided, and the structure of the insulation drainage wire has more practical significance for improving the on-load replacement on-pole switching operation efficiency and reducing the labor intensity, and belongs to core technology.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a device and a method for replacing a pole-mounted switch of a vertically arranged 10kV overhead line under load. The method realizes the shunting of the insulating rod operation method, reduces the shielding workload, greatly reduces the operation time and labor intensity, and reduces the power failure range and time.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
the device for replacing the pole-mounted switch of the vertically arranged 10kV overhead line with load comprises a shunt line cross arm fixing frame, a shunt line assembly and an insulating operating rod; the shunt line assemblies are fixed on the shunt line cross arm fixing frame, each shunt line assembly comprises a shunt line main pipe and a soft high-voltage line, two ends of the shunt line main pipe are respectively connected with one soft high-voltage line, one end of each soft high-voltage line is connected with the shunt line main pipe, and the other end of each soft high-voltage line is connected with the high-voltage line; the shunt line cross arm fixing frame is fixed on the cross arm and is matched with the insulating operation rod, and the shunt line cross arm fixing frame is fixed on the cross arm through the insulating operation rod.
The shunt line cross arm fixing frame comprises a shunt line supporting pipe, a shunt line seat, an insulating door sealing clamp, a clamping hoop, a cross arm insulating hook, a cross arm connecting plate clamping piece, a screw ejector rod and a jacking block; the branching line seat, the clamping hoop and the cross arm insulating hook are sequentially fixed on the branching line supporting pipe.
The lower part of the cross arm insulating hook is provided with a hook body in bilateral symmetry, and the shape of the hook body is matched with that of the cross arm.
The insulating door sealing card is arranged on the current dividing line seat; the cross arm connecting plate clamping piece is fixed on the clamping hoop, the screw ejector rod is arranged on the cross arm connecting plate clamping piece, and the ejector block is fixed on the screw ejector rod.
The shunt wire assembly further comprises a positioning ring, a pipe sleeve, a shunt wire telescopic pipe, a shunt wire clamp hanging ring and a shunt wire clamp; the split line telescopic pipe is connected with the split line main pipe through a pipe sleeve, and a socket telescopic structure is arranged between the split line telescopic pipe and the split line main pipe.
The shunt wire clamp comprises a C-shaped wire clamp head, a V-shaped ejector block and an ejector rod bolt, wherein the V-shaped ejector block is arranged at the end part of the ejector rod bolt, the ejector rod bolt is connected with the C-shaped wire clamp head, and a clamping space for accommodating a high-voltage wire is formed between the V-shaped ejector block and the C-shaped wire clamp head.
One end of the soft high-voltage wire is connected with the shunt wire telescopic pipe, the other end of the soft high-voltage wire is connected with the shunt wire clamp, and the shunt wire clamp hanging ring is connected with the shunt wire clamp.
The split-flow wire clamp hanging ring is U-shaped and is hung on a split-flow wire main pipe or a split-flow wire telescopic pipe.
The application method of the device for replacing the pole-mounted switch of the vertically arranged 10kV overhead line with load comprises the following steps:
1) The method comprises the steps that a shunt line cross arm fixing frame is arranged on an intermediate layer cross arm of a vertical arrangement line, the intermediate layer cross arm is connected with a cross arm through a cross arm connecting plate clamping piece, a cross arm insulating hook on the shunt line cross arm fixing frame is clamped and positioned with the cross arm, and the hooking force of the cross arm insulating hook is balanced with the gravity of a three-component streamline assembly on the other side of the shunt line cross arm fixing frame by taking the cross arm connecting plate clamping piece as a fulcrum;
2) Respectively loading the three component streamline assemblies into three shunting line seats on a shunting line cross arm fixing frame, and sealing a shunting line main pipe by an insulating sealing door;
3) Three pairs of soft high-voltage wires are led out from two ends of the three-component streamline assembly to an upper wire, a middle wire and a lower wire in the three-phase high-voltage wires respectively, and the end parts of the soft high-voltage wires are connected with the corresponding high-voltage wires through shunt wire clamps.
And in the third step, three pairs of soft high-voltage wires are respectively led out from two ends of the three-component streamline assemblies to an upper wire, a middle wire and a lower wire in the three-phase high-voltage wires, the shunting wire assembly closest to the electric pole on the shunting wire cross arm fixing frame is correspondingly connected with the upper wire high-voltage wire, the shunting wire assembly farthest from the electric pole on the shunting wire cross arm fixing frame is correspondingly connected with the lower wire high-voltage wire, and the shunting wire assembly in the middle position on the shunting wire cross arm fixing frame is correspondingly connected with the middle wire high-voltage wire.
Compared with the prior art, the invention has the beneficial effects that:
1) The shunt wire cross arm fixing frame can be installed and detached by an insulating rod operation method, the current carrying capacity of the shunt wire assembly meets the operation requirement, the shunt wire assembly has enough mechanical strength, the operating mechanism can be screwed in a mode that the gun operating rod is used for hooking the operating ring, and the structure is simple and the operation is convenient;
2) The working time can be saved by 30%, the working efficiency is improved, the safety of the operation is ensured, and the labor intensity is low;
3) The system can be disassembled and combined aiming at various operation sites, has strong universality and applicability, can be used for connecting and disconnecting a bypass system without using a bypass load switch on a small-load line, fully ensures the inter-phase distance of a three-phase drainage wire of the bypass system, and is convenient to carry.
Drawings
FIG. 1 is a front elevational view of the present invention in a schematic configuration and in an operative configuration;
FIG. 2 is a schematic structural and operational side view of the present invention;
FIG. 3 is a schematic structural and operational plan view of the present invention;
FIG. 4 is a schematic view of the structure of the split-line cross arm fixing frame of the invention;
FIG. 5 is a schematic view of a shunt wire assembly of the present invention;
FIG. 6 is a schematic diagram of a shunt wire clip of the present invention;
FIG. 7 is a schematic view of the structure of the insulating operating rod of the present invention;
fig. 8 is a schematic view of the structure of the cross arm insulating hook.
In the figure: the device comprises a 1-pole, a 2-high voltage wire, a 3-pole switch, a 4-shunt wire cross arm fixing frame, a 5-shunt wire assembly, a 6-cross arm, a 7-fastening rod tube, an 8-rocker arm, a 9-socket head, a 10-hinge screw, an 11-handle, a 41-shunt wire supporting tube, a 42-shunt wire seat, a 43-insulating door closing clamp, a 44-clamping hoop, a 45-cross arm insulating hook, a 46-cross arm connecting plate clamp piece, a 47-screw ejector rod, a 48-ejector block, a 51-shunt wire main tube, a 52-positioning ring, a 53-pipe sleeve, a 54-shunt wire telescopic tube, a 55-shunt wire clamp hanging ring, a 56-soft high voltage wire, a 57-shunt wire clamp, a 571-C-shaped wire clamp, a 572-V-shaped ejector block, a 573-ejector rod bolt and a 451-hook body.
Description of the embodiments
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
as shown in fig. 1 to 4, an apparatus for replacing a pole-mounted switch of a vertically arranged 10kV overhead line with a load includes a shunt wire cross arm holder 4, a shunt wire assembly 5, and an insulating operation lever.
The shunt line assembly 5 is three groups in total, and the shunt line assembly 5 comprises a shunt line main pipe 51 and soft high-voltage wires 56, wherein two ends of the shunt line main pipe 51 are respectively connected with the soft high-voltage wires 56, one end of each soft high-voltage wire is connected with the shunt line main pipe 51, and the other end of each soft high-voltage wire is connected with the corresponding high-voltage wire 2 through a shunt wire clamp 57.
An I-shaped positioning ring 52 is arranged at the connection part of the split wire assembly 5 and the split wire cross arm fixing frame 4; the positioning ring 52 is matched with the shunt wire seat 42 on the shunt wire cross arm fixing frame, and the insulating door sealing clamp 43 is arranged on the shunt wire seat 42 so as to prevent the shunt wire from falling off.
The shunt wire cross arm fixing frame 4 is connected with the cross arm 6 through a cross arm connecting plate clamping piece 46, a screw ejector rod 47 is connected to the cross arm connecting plate clamping piece 46, a jacking block 48 is arranged at one end of the screw ejector rod 47, the screw ejector rod 47 is matched with an inner hexagonal sleeve at the end part of an insulating operation rod and used for adjusting the position of the jacking block 48, a clamping shape capable of clamping the cross arm 6 is formed between the cross arm connecting plate clamping piece 46 and the jacking block 48, and clamping or loosening of the shunt wire cross arm fixing frame 4 and the cross arm 6 is achieved.
The end of the main pipe 51 is provided with U-shaped split-wire clamp hanging rings 55, the number of which is 2, and about 1, for fixing the split-wire clamp 57 in the non-working state. The invention is used for vertically arranging the 10kV overhead line on-load replacement pole switch, and when the on-load replacement pole switch 3 is needed, the bypass is formed by using the shunt line, so that the inter-phase distance of the three-phase drainage line of the bypass system can be fully ensured, and the insulation shielding amount is reduced.
Referring to fig. 5, two sides of the split line main pipe 51 may further be provided with split line telescopic pipes 54, the split line telescopic pipes 54 are connected with the split line main pipe 51 through a pipe sleeve 53, and a socket telescopic structure is formed between the split line telescopic pipes 54 and the split line main pipe 51. This is a form of length-extensible, with a U-shaped shunt clamp attachment 55 at the end of the shunt wire extension tube 54 for securing the shunt clamp 57 in the inactive state.
Referring to fig. 6, the shunt wire clamp 57 includes a C-shaped wire clamp head 571, a V-shaped top block 572 and a top rod bolt 573, the V-shaped top block 572 is disposed at an end of the top rod bolt 573, the top rod bolt 573 is connected with the C-shaped wire clamp head 571, a clamping space for accommodating the high voltage wire 2 is formed between the V-shaped top block 572 and the C-shaped wire clamp head 571, and the clamping force of the structure is adjustable, so that the on-load contact is ensured to be good.
Referring to fig. 7, the insulating operating rod is composed of a fastening rod tube 7, an inner hexagonal head 9 at one end thereof, and a swing arm 8 at the other end thereof, the swing arm 8 being connected to a handle 11 by a hinge screw 10. The inner hexagon head 9 is matched with the screw ejector rod 47 on the cross arm connecting plate clamping piece 46, can be disassembled and combined aiming at various operation sites, and has strong universality and applicability.
Referring to fig. 8, a cross arm insulating hook 45 is arranged between the shunt line cross arm fixing frame 4 and the cross arm 6, a hook body 451 is respectively arranged at the left-right symmetry of the lower part of the cross arm insulating hook, and the shape of the hook body is matched with the shape of the lower edge of the steel material of the cross arm 6.
The method for using the device for replacing the pole-mounted switch of the vertical 10kV overhead line with load comprises the following specific operation steps:
1) The shunt line cross arm fixing frame 4 is arranged on the middle cross arm 6 of the vertical arrangement line, so that the shunt line cross arm fixing frame is connected with cross arm steel through a cross arm connecting plate clamping piece 46, a cross arm insulating hook 45 on the shunt line cross arm fixing frame 4 is clamped and positioned with the cross arm 6 steel, and the hooking force of the cross arm insulating hook 45 is balanced with the gravity of the three-component streamline assembly 5 on the other side of the shunt line cross arm fixing frame 4 by taking the cross arm connecting plate clamping piece 46 as a fulcrum.
2) The three-component wire assembly 5 is respectively arranged in three wire-splitting seats 42 on the wire-splitting cross arm fixing frame 4, the wire-splitting assembly 5 is sealed by an insulating sealing door 43, and the wire-splitting seats 42 can ensure that the spacing between the three wires meets the insulation requirement;
3) Three pairs of soft high-voltage wires 56 are led out from two ends of the three-component streamline assembly 5 to an upper wire, a middle wire and a lower wire in the three-phase high-voltage wires 2 respectively, the end parts of the soft high-voltage wires are connected with the corresponding high-voltage wires 2 through a shunt wire clamp 57, the shunt wire assembly 5 closest to the electric pole 1 on the shunt wire cross arm fixing frame 4 is correspondingly connected with the upper wire high-voltage wires, the shunt wire assembly 5 farthest from the electric pole 1 on the shunt wire cross arm fixing frame 4 is correspondingly connected with the lower wire high-voltage wires, and the shunt wire assembly 5 centered on the position on the shunt wire cross arm fixing frame is correspondingly connected with the middle wire high-voltage wires. The configuration achieves the purpose of shunting when the pole switch is replaced under load by the insulating rod operation method, reduces the shielding workload and obviously reduces the power failure range and time.
The shunt wire cross arm fixing frame 4 can be installed and detached by an insulating rod operation method, the current carrying capacity of the shunt wire assembly 5 meets the operation requirement, the shunt wire assembly has enough mechanical strength, the operating mechanism can be screwed by using a gun operating rod to hook an operating ring, and the shunt wire cross arm fixing frame is simple in structure and convenient to operate. The working time can be saved by 30%, the working efficiency is improved, the safety of the operation is ensured, and the labor intensity is low; the system can be disassembled and combined aiming at various operation sites, has strong universality and applicability, can be used for connecting and disconnecting a bypass system without using a bypass load switch on a small-load line, fully ensures the inter-phase distance of a three-phase drainage wire of the bypass system, and is convenient to carry.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (3)
1. The device for replacing the pole-mounted switch of the vertically arranged 10kV overhead line with load is characterized by comprising a shunt line cross arm fixing frame, a shunt line assembly and an insulating operating rod; the shunt line assemblies are fixed on the shunt line cross arm fixing frame, each shunt line assembly comprises a shunt line main pipe and a soft high-voltage line, two ends of the shunt line main pipe are respectively connected with one soft high-voltage line, one end of each soft high-voltage line is connected with the shunt line main pipe, and the other end of each soft high-voltage line is connected with the high-voltage line; the shunt line cross arm fixing frame is fixed on the cross arm, is matched with the insulating operation rod, and is fixed on the cross arm through the insulating operation rod;
the shunt line cross arm fixing frame comprises a shunt line supporting pipe, a shunt line seat, an insulating door sealing clamp, a clamping hoop, a cross arm insulating hook, a cross arm connecting plate clamping piece, a screw ejector rod and a jacking block; the branching line seat, the clamping hoop and the cross arm insulating hook are sequentially fixed on the branching line supporting pipe;
the lower part of the cross arm insulating hook is symmetrically provided with a hook body in a left-right manner, and the shape of the hook body is matched with that of the cross arm;
the insulating door sealing card is arranged on the current dividing line seat; the cross arm connecting plate clamping piece is fixed on the clamping hoop, the screw ejector rod is arranged on the cross arm connecting plate clamping piece, and the ejector block is fixed on the screw ejector rod;
the shunt wire assembly further comprises a positioning ring, a pipe sleeve, a shunt wire telescopic pipe, a shunt wire clamp hanging ring and a shunt wire clamp; the split line telescopic pipe is connected with the split line main pipe through a pipe sleeve, and a socket telescopic structure is arranged between the split line telescopic pipe and the split line main pipe;
the shunt wire clamp comprises a C-shaped wire clamp head, a V-shaped ejector block and an ejector rod bolt, wherein the V-shaped ejector block is arranged at the end part of the ejector rod bolt, the ejector rod bolt is connected with the C-shaped wire clamp head, and a clamping space for accommodating a high-voltage wire is formed between the V-shaped ejector block and the C-shaped wire clamp head;
one end of the soft high-voltage wire is connected with the shunt wire telescopic pipe, the other end of the soft high-voltage wire is connected with the shunt wire clamp, and the shunt wire clamp hanging ring is connected with the shunt wire clamp;
the split-flow wire clamp hanging ring is U-shaped and is hung on a split-flow wire main pipe or a split-flow wire telescopic pipe.
2. A method of using the apparatus for on-column switching of a load-change vertically aligned 10kV overhead line of claim 1, comprising the steps of:
1) The method comprises the steps that a shunt line cross arm fixing frame is arranged on an intermediate layer cross arm of a vertical arrangement line, the intermediate layer cross arm is connected with a cross arm through a cross arm connecting plate clamping piece, a cross arm insulating hook on the shunt line cross arm fixing frame is clamped and positioned with the cross arm, and the hooking force of the cross arm insulating hook is balanced with the gravity of a three-component streamline assembly on the other side of the shunt line cross arm fixing frame by taking the cross arm connecting plate clamping piece as a fulcrum;
2) Respectively loading the three component streamline assemblies into three shunting line seats on a shunting line cross arm fixing frame, and sealing a shunting line main pipe by an insulating sealing door;
3) Three pairs of soft high-voltage wires are led out from two ends of the three-component streamline assembly to an upper wire, a middle wire and a lower wire in the three-phase high-voltage wires respectively, and the end parts of the soft high-voltage wires are connected with the corresponding high-voltage wires through shunt wire clamps.
3. The method for using the device for replacing the pole-mounted switch of the vertically arranged 10kV overhead line under load according to claim 2, wherein in the step 3), three pairs of soft high-voltage wires are led out from two ends of the three-component streamline assembly to an upper wire, a middle wire and a lower wire in the three-phase high-voltage wires respectively, a shunting wire assembly closest to the electric pole on the shunting wire cross arm fixing frame is correspondingly connected with the upper wire high-voltage wire, a shunting wire assembly farthest from the electric pole on the shunting wire cross arm fixing frame is correspondingly connected with the lower wire high-voltage wire, and a shunting wire assembly in the middle position on the shunting wire cross arm fixing frame is correspondingly connected with the middle wire high-voltage wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910036112.5A CN109994961B (en) | 2019-01-15 | 2019-01-15 | Device and method for replacing pole-mounted switch of vertically arranged 10kV overhead line with load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910036112.5A CN109994961B (en) | 2019-01-15 | 2019-01-15 | Device and method for replacing pole-mounted switch of vertically arranged 10kV overhead line with load |
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| Publication Number | Publication Date |
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| CN109994961A CN109994961A (en) | 2019-07-09 |
| CN109994961B true CN109994961B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910036112.5A Active CN109994961B (en) | 2019-01-15 | 2019-01-15 | Device and method for replacing pole-mounted switch of vertically arranged 10kV overhead line with load |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112670897A (en) * | 2020-12-30 | 2021-04-16 | 国网北京市电力公司 | Drainage device |
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| CN206712405U (en) * | 2017-05-09 | 2017-12-05 | 国网湖南省电力公司带电作业中心 | Rigid insulation part flow arrangement |
| CN209562011U (en) * | 2019-01-15 | 2019-10-29 | 国网辽宁省电力有限公司鞍山供电公司 | It is arranged vertically 10kV overhead transmission line on-load and replaces on-pole switch device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10348068B2 (en) * | 2014-03-12 | 2019-07-09 | Jla Capital Llc | Installation guard for overhead utility lines |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004056837A (en) * | 2002-07-16 | 2004-02-19 | Tohoku Electric Power Co Inc | Temporary cable support |
| CN201408942Y (en) * | 2009-05-15 | 2010-02-17 | 上海市南电力工程有限公司 | Flow inducing connecting device for 10 kV lines |
| CN202872259U (en) * | 2012-11-06 | 2013-04-10 | 湖南省电力公司长沙电业局 | Branching line support frame for replacement of isolating switch in 10 kV distribution line |
| CN204290158U (en) * | 2014-12-09 | 2015-04-22 | 国家电网公司 | 110kV double loop Small Distance strain tower drainage thread insulation brace rod |
| CN105186338A (en) * | 2015-08-04 | 2015-12-23 | 国家电网公司 | Construction method of employing insulation bucket arm vehicle insulating gloves with load to change pole top switch device |
| CN106300134A (en) * | 2016-09-22 | 2017-01-04 | 国家电网公司 | The instrument of wire is fixed when charged for replacement 10kV distribution line needle porcelain bottle |
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| CN109994961A (en) | 2019-07-09 |
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