CN109103809B - Insulating rod capable of shortening operation time of live replacement of suspension insulator of grounding electrode - Google Patents

Insulating rod capable of shortening operation time of live replacement of suspension insulator of grounding electrode Download PDF

Info

Publication number
CN109103809B
CN109103809B CN201811262826.XA CN201811262826A CN109103809B CN 109103809 B CN109103809 B CN 109103809B CN 201811262826 A CN201811262826 A CN 201811262826A CN 109103809 B CN109103809 B CN 109103809B
Authority
CN
China
Prior art keywords
rod
suspension insulator
grounding electrode
rod body
supporting plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201811262826.XA
Other languages
Chinese (zh)
Other versions
CN109103809A (en
Inventor
尹飞
樊建军
孙超
陈鹏
陈雷
刘维
郭文博
李景昊
秦岭
吴小磊
李忠民
张建辉
陶留海
张利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Maintenance Co of State Grid Henan Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Maintenance Co of State Grid Henan Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Maintenance Co of State Grid Henan Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201811262826.XA priority Critical patent/CN109103809B/en
Publication of CN109103809A publication Critical patent/CN109103809A/en
Application granted granted Critical
Publication of CN109103809B publication Critical patent/CN109103809B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/02Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables

Abstract

The invention discloses an insulating rod for shortening the operation time of live replacement of a suspension insulator of a grounding electrode, which comprises a C-shaped elbow, a supporting plate, a force application device, a pin puller, a rod body and an operating mechanism, wherein the C-shaped elbow is arranged on the supporting plate; the C-shaped elbow is arranged at the top end, and the upper end and the lower end of the opening are both provided with inclined planes; the supporting plate is arranged below the C-shaped elbow; the force applying device is arranged in front of the supporting plate; the pin puller is arranged on the upper part of the front side of the force-applying device; the rod body is arranged below the supporting plate; the operating mechanism is arranged at the lower part of the rod body. The insulating rod capable of shortening the operation time of live replacement of the suspension insulator of the grounding electrode can realize pulling, plugging, dismounting and restoring the insulator connection, can greatly shorten the operation time of live replacement of the suspension insulator of the grounding circuit, reduces the overhead operation time and saves the physical power.

Description

Insulating rod capable of shortening operation time of live replacement of suspension insulator of grounding electrode
Technical Field
The invention belongs to the technical field of power grid maintenance, and particularly relates to an insulating rod for shortening the operation time of live replacement of a suspension insulator of a grounding electrode.
Background
The grounding electrode line is an important component of an extra-high voltage direct current transmission system, is an overhead line for connecting a neutral bus of a converter station and a grounding electrode guide system, has the characteristics of large current, low voltage and the like, and both ends of each direct current transmission line are connected with the grounding electrode overhead line, so that if the grounding electrode line fails, the safe operation of the extra-high voltage direct current transmission line is directly influenced. The hot-line work of the grounding electrode overhead line mainly faces the following problems: because the grounding electrode insulator disc is large in diameter and deep in grooving when the suspension insulator of the grounding electrode circuit is replaced, the existing insulating operation tool is time-consuming and labor-consuming to operate. At present, mature and suitable technologies and tools are lacked at home and abroad.
Grounding electrode circuit: a direct current transmission earth electrode lead (DC transmission earth electrode) is connected to a line between a direct current voltage neutral point and an earth electrode of the converter station, which is generally called an earth electrode line. The grounding electrode line can adopt an overhead line and can also adopt a cable line. The grounding electrode line is generally about ten to tens of kilometers long, and an overhead line is adopted in most projects.
Live working: live working is a method of inspecting and repairing power lines and equipment without power outage. The live working can ensure uninterrupted power supply and is widely adopted in the power department, and the personal safety can be completely ensured by the live working only by using a proper tool and adopting a correct working method and necessary safety measures.
According to the standard of DL/T251-2012 +/-800 kV direct current overhead transmission line maintenance regulations, when replacing a single insulator or a whole string of insulators at 7.1.1, selecting a special tool; 7.2.4.1 when replacing single sheet or whole string of insulator, different operation modes can be adopted, the selection of tools must be safe and reliable, and protection measures for preventing the grounding wire from falling off should be made.
In order to solve the above problems, CN106602443B discloses a multifunctional insulating operating rod, which comprises a Y-shaped working head and an insulating rod, wherein the insulating rod is hinged by a rotatable insulating rod and a fixed insulating rod through a pin; the fixed insulating rod is provided with an anti-skid groove and a hand crank, the inner wall of the fixed insulating rod is provided with a disc, and the disc can be driven to move when the hand crank is shaken; the inside of the insulating rod is provided with a linkage device, and the linkage device consists of a linkage rod A, a linkage rod B and a linkage rod C; one end of the linkage rod C is fixed on the disc through a bolt A, and the other end of the linkage rod C is connected with the linkage rod B through a connecting piece II; one end of the linkage rod A is fixed on the rotatable insulating rod through a bolt B, and the linkage rod A is connected with the linkage rod B through a connecting piece I. The invention can be used in a bending way, but is not suitable for live replacement of the suspension insulator of the grounding electrode line.
CN104882809B discloses a multifunctional insulating operating rod, which comprises an insulating rod; the insulating rod comprises a fixed rod, a telescopic insulating rod, an adjustable butterfly screw and a fastening nut, the lower part of the telescopic insulating rod is inserted into the upper end part of the fixed rod and is fixed by the fastening nut, and the upper end of the telescopic insulating rod is fixed with an insulating brake pull rod head; the upper end part of the telescopic insulating rod is provided with an adjustable butterfly screw; an electroscope is fixed at the upper end part of the insulating rod; the method is characterized in that: the upper end of the insulating brake pull rod head is provided with a shovel blade, and a lighting device is arranged on the fixed rod; a switching operation device is fixed at the upper end part of the telescopic insulating rod. The switching operation device comprises a joint, a first jack used for inserting a first operating rod is arranged on the left end face of the joint, and a second jack used for inserting a second operating rod is arranged at the bottom of the joint. The invention is suitable for the operation of column switches and isolation switches and the switching operation of substations, but is not suitable for live replacement of suspension insulators of grounding electrode lines.
Disclosure of Invention
Aiming at the defects of the prior art, the invention discloses an insulating rod for shortening the operation time of live replacement of a suspension insulator of a grounding electrode, which can realize the pulling, the plugging, the dismounting and the insulator connection recovery, can greatly shorten the operation time of live replacement of the suspension insulator of the grounding circuit, reduce the overhead operation time and save the physical power.
An insulating rod for shortening the working time of live replacement of a suspension insulator of a grounding electrode comprises a C-shaped elbow, a supporting plate, a force application device, a pin puller, a rod body and an operating mechanism; the C-shaped elbow is arranged at the top end, and the upper end and the lower end of the opening are both provided with inclined planes; the supporting plate is arranged below the C-shaped elbow; the force applying device is arranged in front of the supporting plate; the pin puller is arranged on the upper part of the front side of the force-applying device; the rod body is arranged below the supporting plate; the operating mechanism is arranged at the lower part of the rod body.
Preferably, the support plate is L-shaped, the upper part of the support plate is connected with the C-shaped elbow through a first screw, a first circular through hole is formed in the center of the bottom of the support plate, and second circular through holes are symmetrically formed in the two sides of the support plate; sleeves are arranged at the upper side and the lower side of the bottom of the supporting plate at the position of the circular through hole; the left side and the right side of the stress application device are symmetrically provided with a circular through hole III; the force applying device is respectively connected with the supporting plate and the C-shaped elbow through a screw rod penetrating through the second circular through hole and the third circular through hole; the pin puller is provided with a groove.
Preferably, the rod body is provided with a plurality of first connecting pieces, the lower part of the rod body is provided with a fastener, and the bottom of the rod body is provided with an anti-skid sleeve; the fastener is in an elliptical ring shape and is fastened through a second screw, and a fixing ring is arranged on the upper portion of the fastener.
Preferably, the operating mechanism comprises a second connecting piece, a limiting piece, a handle and an operating rope; the second connecting piece is connected with the lower part of the fastener; the limiting piece is arranged on the second connecting piece; the handle is connected with the second connecting piece through a connecting rod; one end of the operating rope is connected with the handle through the connecting rod, and the other end of the operating rope is connected with the force application device through the fixed circular ring, the first connecting piece and the sleeve.
Preferably, the rod body is made of a composite material of glass fiber reinforced resin.
Preferably, the resin is an epoxy resin.
Preferably, the first connecting piece is provided with a through hole respectively matched with the rod body and the operating rope.
Preferably, the groove comprises a base and two cylindrical bulges with the same specification; the base is arranged on the force applying device; the cylinder protrusion is arranged on the base.
Preferably, the second connecting piece is a U-shaped pipe with an upper opening, and the upper part of the rear surface of the second connecting piece is connected with the lower part of the fastener; the limiting piece is arranged on the upper part of the opening part of the second connecting piece; and the connecting rod of the handle is connected with the operating rope in a cavity defined by the second connecting piece and the limiting piece.
Compared with the prior art, the insulating rod for shortening the operation time of live replacement of the suspension insulator of the grounding electrode has the following beneficial effects:
1. the insulating rod for shortening the working time of live replacement of the suspension insulator of the grounding electrode is provided with the C-shaped elbow and arranged at the top end of the insulating rod, the upper end and the lower end of the opening are provided with the inclined planes, the opening end is enlarged, and the C-shaped elbow is convenient to use to clamp the lower end of the suspension insulator.
2. The invention discloses an insulator rod for shortening the working time of live replacement of a suspension insulator of a grounding electrode, which is provided with a force application device, wherein a pin puller is arranged on the force application device, and a groove on the pin puller can be clamped with a bulge at the bottom of the suspension insulator by moving the force application device, so that the function of pulling and inserting the insulator is realized.
3. The invention discloses an insulating rod for shortening the working time of replacing a suspension insulator of a grounding electrode in an electrified way, which is provided with a rod body, a plurality of first connecting pieces, a fastener arranged at the lower part of the rod body and an anti-skid sleeve arranged at the bottom of the rod body; the fastener is oval annular, fastens through two screws, and upper portion is provided with fixed ring, downwardly extending in the middle of the bottom, firm in connection facilitates the use.
4. The invention discloses an insulating rod for shortening the working time of live replacement of a suspension insulator of a grounding electrode, which is provided with an operating mechanism, wherein the operating mechanism comprises a connecting piece II, a limiting piece, a handle and an operating rope; the second connecting piece is connected with the lower part of the fastener; the limiting piece is arranged on the connecting piece; the handle is connected with the second connecting piece through a connecting rod; one end of the operating rope is connected with the handle through the connecting rod, and the other end of the operating rope is connected with the force application device through the fixed circular ring, the first connecting piece and the sleeve, so that the high-altitude operation time can be shortened, and the physical strength is saved.
5. The rod body of the insulating rod for shortening the working time of live replacement of the suspension insulator of the grounding electrode is made of the composite material of the glass fiber reinforced epoxy resin, has good insulativity and is suitable for various voltage environments.
Drawings
FIG. 1 is a schematic structural diagram of an insulation rod for shortening the time required to replace a suspension insulator of a grounding electrode in a live-line manner according to the present invention;
FIG. 2 is a schematic view of a C-bend of an insulator rod for shortening the time required for live replacement of a suspension insulator of an earth electrode according to the present invention, wherein (a) is a front view and (b) is a right side view;
FIG. 3 is an enlarged view of area A of FIG. 1;
FIG. 4 is a schematic view of an insulating rod for shortening the working time of replacing a suspension insulator of a grounding electrode in an electrified manner according to the present invention;
FIG. 5 is a schematic view of an operating mechanism of an insulating rod for shortening the time required for replacing a suspension insulator of a grounding electrode in a live-line manner according to the present invention;
fig. 6 is a schematic view of a first insulating rod connecting member for shortening the working time of live replacement of a suspension insulator of a ground electrode according to the present invention, wherein (a) is a plan view and (b) is a front view;
FIG. 7 is a bar graph produced according to the data in Table 1;
FIG. 8 is a field operation diagram of workers on an iron tower using an insulating rod for shortening the operation time of live replacement of a suspension insulator of a grounding electrode;
FIG. 9 is an enlarged view of a portion of the insulator rod used by a worker to assemble and disassemble the suspension insulator for shortening the time required to replace the suspension insulator with electricity;
reference numerals: 1-C-shaped elbow, 2-support plate, 3-force applying device, 4-pin puller, 5-rod body, 6-operating mechanism, 7-screw I, 8-circular through hole I, 9-circular through hole II, 10-sleeve, 11-circular through hole III, 12-groove, 13-screw, 14-connecting piece I, 15-fastener, 16-anti-slip sleeve, 17-screw II, 18-fixing ring, 19-connecting piece II, 20-limiting piece, 21-handle, 22-operating rope, A-iron tower, B-worker, C-insulating rod for shortening the operation time of replacing suspension insulator of grounding electrode in electrified mode, and D-suspension insulator.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The first embodiment is as follows:
as shown in fig. 1 and fig. 2, comprises a C-shaped elbow 1, a support plate 2, a force application device 3, a pin puller 4, a rod body 5 and an operating mechanism 6; the C-shaped elbow 1 is arranged at the top end, and the upper end and the lower end of the opening are both provided with inclined planes; the supporting plate 2 is arranged below the C-shaped elbow 1; the force applying device 3 is arranged in front of the supporting plate 2; the pin puller 4 is arranged at the upper part of the front side of the force adding device 3; the rod body 5 is arranged below the supporting plate 2; the operating mechanism 6 is provided at a lower portion of the lever body 5.
As shown in fig. 3 and 4, the upper part of the support plate 2 is connected with the C-shaped elbow 1 through a first screw 7, a first circular through hole 8 is formed in the center of the bottom, and second circular through holes 9 are symmetrically formed in two sides of the bottom; the upper side and the lower side of the bottom of the supporting plate 2 at the position of the first round through hole 8 are both provided with sleeves 10; the left side and the right side of the force applying device 3 are symmetrically provided with a circular through hole III 11; the force applying device 6 is respectively connected with the supporting plate 5 and the C-shaped elbow 1 through a screw 13 penetrating through the circular through hole II 9 and the circular through hole III 11; the bottom of the pin puller 4 is of a table structure, and the upper half part of the pin puller is provided with a bulge with a groove 12; the lower half part of the pin puller 4 is connected with the force applying device 3.
As shown in fig. 5, the operating mechanism includes a second connecting member 19, a limiting member 20, a handle 21 and an operating rope 22; the second connecting piece 19 is connected with the lower part of the fastener 15; the limiting piece 20 is arranged on the second connecting piece 19; the handle 21 is connected with the second connecting piece 19 through a connecting rod; one end of an operating rope 23 is connected with the handle 21 through a connecting rod, and the other end of the operating rope is connected with the force-adding device 3 through a fixed ring 18, a first connecting piece 14 and the sleeve 10; the second connecting piece 19 is a U-shaped pipe with an upper opening, and the upper part of the rear surface of the second connecting piece is connected with the lower part of the fastener 15; the limiting piece 20 is arranged on the upper part of the opening part of the second connecting piece 19; the connecting rod of the handle 21 is connected with the operating rope 22 in a cavity defined by the second connecting piece 19 and the limiting piece 20.
As shown in fig. 6, the first connecting member 14 is provided with through holes respectively matched with the rod body 5 and the operating rope 22.
The rod body 5 is made of glass fiber reinforced resin composite material.
The resin is an epoxy resin.
After the insulating rod for shortening the operation time of replacing the suspension insulator of the grounding electrode in an electrified way is designed and manufactured successfully, the inventor utilizes the insulating rod to simulate the suspension insulator of the grounding electrode circuit to carry out the operation under the electrified working condition, and the operation time is counted, and the statistics (table 1) is as follows:
TABLE 1 statistical table of the completion conditions and time of the insulator dismounting and mounting of the grounding electrode circuit in live-line
Serial number Whether or not it can accomplish Work site Completion ratio (%) When in use
1 Is that #19 100 15min
2 Is that #22 100 14min
3 Is that #28 100 14.5min
4 Is that #33 100 14min
5 Is that #37 100 1min
6 Is that #40 100 14.3min
7 Is that #42 100 14.6min
8 Is that #45 100 14min
As shown in fig. 7, it can be seen that when the insulating rod for shortening the working time of live replacement of the suspension insulator of the grounding electrode is used for disassembling and assembling the suspension insulator, the required working time is greatly reduced, and the working efficiency is improved.
As shown in fig. 8, workers work on the iron tower by using the insulating rod which shortens the time for replacing the suspension insulator of the grounding electrode in a live manner.
As shown in fig. 9, the C-bend 1 is clamped to the lower part of the suspension insulator, and the force applying device 3 is moved to a suitable position below the suspension insulator, so that the groove 12 on the pin puller 4 is engaged with the protrusion on the bottom of the suspension insulator.
When the device is used, a worker leans against an iron tower, uses the insulating rod for shortening the operation time of replacing the suspension insulator of the grounding electrode in a live-line manner, holds the anti-skidding sleeve 16 by hand first, clamps the lower part of the suspension insulator by the C-shaped elbow 1, then operates the handle 21, moves the force applying device 3 to a proper position below the suspension insulator through the operating rope 22, and enables the groove 12 of the pin puller 4 to be clamped with the protrusion at the bottom of the suspension insulator; finally, holding the rod body 5 by two hands in front of each other, and detaching the suspension insulator to be replaced.
Compared with the prior art, the insulating rod for shortening the operation time of live replacement of the suspension insulator of the grounding electrode disclosed by the invention can realize the pulling, plugging, dismounting and insulator connection recovery, can greatly shorten the operation time of live replacement of the suspension insulator of the grounding circuit, reduces the overhead operation time and saves the physical power.
While the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the following claims.

Claims (4)

1. The utility model provides a shorten insulator spindle of electrified change earthing pole suspension insulator activity duration which characterized in that: comprises a C-shaped elbow (1), a support plate (2), a force application device (3), a pin puller (4), a rod body (5) and an operating mechanism (6); the C-shaped elbow (1) is arranged at the top end, and the upper end and the lower end of the opening are both provided with inclined planes; the supporting plate (2) is arranged below the C-shaped elbow (1); the force applying device (3) is arranged in front of the supporting plate (2); the pin puller (4) is arranged on the upper part of the front side of the force application device (3); the rod body (5) is arranged below the supporting plate (2); the operating mechanism (6) is arranged at the lower part of the rod body (5);
the support plate (2) is L-shaped, the upper part of the support plate is connected with the C-shaped elbow (1) through a screw I (7), the center of the bottom of the support plate is provided with a circular through hole I (8), and the two sides of the support plate are symmetrically provided with circular through holes II (9); sleeves (10) are arranged at the bottom of the supporting plate (2) on the upper side and the lower side of the first round through hole (8); a circular through hole III (11) is symmetrically formed in the left side and the right side of the force applying device (3); the force applying device (3) is respectively connected with the supporting plate (2) and the C-shaped elbow (1) through a screw (13) penetrating through the circular through hole II (9) and the circular through hole III (11); a groove (12) is formed in the pin puller (4);
the operating mechanism (6) comprises a second connecting piece (19), a limiting piece (20), a handle (21) and an operating rope (22); the second connecting piece (19) is connected with the lower part of the fastener (15); the limiting piece (20) is arranged on the second connecting piece (19); the handle (21) is connected with the second connecting piece (19) through a connecting rod; one end of the operating rope (22) is connected with the handle (21) through a connecting rod, and the other end of the operating rope is connected with the force-applying device (3) through the fixed circular ring (18), the first connecting piece (14) and the sleeve (10).
2. The insulating rod for shortening the working time of live replacement of the suspension insulator of the grounding electrode according to claim 1, wherein: a plurality of first connecting pieces (14) are arranged on the rod body (5), a fastener (15) is arranged at the lower part of the rod body, and an anti-skid sleeve (16) is arranged at the bottom of the rod body; the fastener (15) is fastened through a second screw (17), and a fixing circular ring (18) is arranged on the upper portion of the fastener.
3. The insulating rod for shortening the working time of live replacement of the suspension insulator of the grounding electrode according to claim 1, wherein: the rod body (5) is made of a glass fiber reinforced resin composite material.
4. The insulating rod for shortening the working time of live replacement of the suspension insulator of the grounding electrode according to claim 3, wherein: the resin is epoxy resin.
CN201811262826.XA 2018-10-27 2018-10-27 Insulating rod capable of shortening operation time of live replacement of suspension insulator of grounding electrode Active CN109103809B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811262826.XA CN109103809B (en) 2018-10-27 2018-10-27 Insulating rod capable of shortening operation time of live replacement of suspension insulator of grounding electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811262826.XA CN109103809B (en) 2018-10-27 2018-10-27 Insulating rod capable of shortening operation time of live replacement of suspension insulator of grounding electrode

Publications (2)

Publication Number Publication Date
CN109103809A CN109103809A (en) 2018-12-28
CN109103809B true CN109103809B (en) 2020-03-31

Family

ID=64869467

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811262826.XA Active CN109103809B (en) 2018-10-27 2018-10-27 Insulating rod capable of shortening operation time of live replacement of suspension insulator of grounding electrode

Country Status (1)

Country Link
CN (1) CN109103809B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09182228A (en) * 1995-12-26 1997-07-11 Asahi Tec Corp Tool for attaching cotter pin on live wire
JP2008199861A (en) * 2007-02-15 2008-08-28 Kansai Electric Power Co Inc:The Articulated structure of tool for indirect hot-line work, and insulated operating rod for indirect hot- line work
CN101593942A (en) * 2009-04-03 2009-12-02 安徽省电力公司滁州供电公司 10 kilovolt insulated circuit operating rod type bypass working methods and special equipment
CN203180427U (en) * 2012-10-17 2013-09-04 国家电网公司 Rocking bar used for electrified replacement of straight-line insulator
CN105356371A (en) * 2015-12-04 2016-02-24 国家电网公司 Same-tower multi-loop power transmission line strain insulator string electrification replacing method and device
CN206211400U (en) * 2016-11-18 2017-05-31 国网浙江省电力公司台州供电公司 Earth potential live replacing suspension insulator dismounts bowl head specific purpose tool
CN107104296A (en) * 2017-06-16 2017-08-29 国家电网公司 A kind of multipurpose combined earthing clamp component

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09182228A (en) * 1995-12-26 1997-07-11 Asahi Tec Corp Tool for attaching cotter pin on live wire
JP2008199861A (en) * 2007-02-15 2008-08-28 Kansai Electric Power Co Inc:The Articulated structure of tool for indirect hot-line work, and insulated operating rod for indirect hot- line work
CN101593942A (en) * 2009-04-03 2009-12-02 安徽省电力公司滁州供电公司 10 kilovolt insulated circuit operating rod type bypass working methods and special equipment
CN203180427U (en) * 2012-10-17 2013-09-04 国家电网公司 Rocking bar used for electrified replacement of straight-line insulator
CN105356371A (en) * 2015-12-04 2016-02-24 国家电网公司 Same-tower multi-loop power transmission line strain insulator string electrification replacing method and device
CN206211400U (en) * 2016-11-18 2017-05-31 国网浙江省电力公司台州供电公司 Earth potential live replacing suspension insulator dismounts bowl head specific purpose tool
CN107104296A (en) * 2017-06-16 2017-08-29 国家电网公司 A kind of multipurpose combined earthing clamp component

Also Published As

Publication number Publication date
CN109103809A (en) 2018-12-28

Similar Documents

Publication Publication Date Title
CN105140675B (en) Improve the earth potential working non-bearing connecting clip of work efficiency
CN103368104B (en) The insulating bar of earth potential working non-bearing connecting clip
CN203674624U (en) Sleeve-type combination tool for live-line jumper clamp fastening
CN109103809B (en) Insulating rod capable of shortening operation time of live replacement of suspension insulator of grounding electrode
CN204424804U (en) Equipotential changes the instrument of the two soft bus strain insulator of simply connected
CN109616964B (en) Plug-and-play adjustable cable support for transformer incoming line
CN215185777U (en) Modular insulating support frame on flexible cable pole
CN204789734U (en) Electrician's utensil is tested to portable high pressure
CN202817593U (en) Circuit hardware bolt fastener
CN204793264U (en) Short circuit grounding
CN209747426U (en) Breaker on primary and secondary fusion column
CN209896286U (en) Grounding wire head capable of clamping at multiple angles
CN203800200U (en) Portable ground wire
CN208867101U (en) Cable elbow-shaped head driver-extractor
CN202712719U (en) Electricity testing and switching operation integration device
CN103368110B (en) The charged installation and removal construction method of non-bearing connecting clip
CN204696525U (en) GW5 type isolating switch static contact finger installation special tool
CN205646197U (en) Novel high pressure bonding device
CN210074616U (en) Insulating rod type hammer fitting
CN203674623U (en) Ratchet combination tool for live-line jumper clamp fastening
CN214412207U (en) Limiting device for high-voltage wire laying
CN213184653U (en) Auxiliary device convenient to installation of eminence earth connection
CN203071540U (en) Soleplate for transformer lightning arrester
CN104143781A (en) Electrification installation method and installation tool for live part verification ground ring
CN203367879U (en) Insulating operating rod of earth potential working non-bearing-force connection wire clamp

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant