CN113436815A - Line column type lightning protection insulator - Google Patents

Line column type lightning protection insulator Download PDF

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Publication number
CN113436815A
CN113436815A CN202110781728.2A CN202110781728A CN113436815A CN 113436815 A CN113436815 A CN 113436815A CN 202110781728 A CN202110781728 A CN 202110781728A CN 113436815 A CN113436815 A CN 113436815A
Authority
CN
China
Prior art keywords
rod core
lightning protection
fitting
discharge cavity
pressure relief
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.)
Pending
Application number
CN202110781728.2A
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Chinese (zh)
Inventor
李敬
李冬生
黄建萍
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.)
Jiangxi Dongwei Electric Co ltd
Original Assignee
Jiangxi Dongwei Electric 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 Jiangxi Dongwei Electric Co ltd filed Critical Jiangxi Dongwei Electric Co ltd
Priority to CN202110781728.2A priority Critical patent/CN113436815A/en
Publication of CN113436815A publication Critical patent/CN113436815A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00Insulators or insulating bodies characterised by their form
    • H01B17/38Fittings, e.g. caps; Fastenings therefor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00Insulators or insulating bodies characterised by their form
    • H01B17/14Supporting insulators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00Details of spark gaps
    • H01T1/02Means for extinguishing arc

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Abstract

The invention relates to the technical field of insulators, in particular to a line column type lightning protection insulator which comprises a rod core, an umbrella skirt sleeve, an upper hardware fitting and a lower hardware fitting, wherein the rod core is of a hollow structure, the upper hardware fitting and the lower hardware fitting are respectively positioned at the upper end and the lower end of an inner cavity of the rod core, the umbrella skirt sleeve is arranged on the outer surface of the rod core, a wire groove is formed in the upper end of the upper hardware fitting, a plurality of resistance blocks which are tightly connected are arranged in the rod core, the resistance block at the uppermost end is connected with the upper hardware fitting, the resistance block at the lowermost end is connected with an upper electrode, a lower electrode is arranged at the upper end of the lower hardware fitting, a stud is arranged at the lower end of the lower hardware fitting, a discharge cavity is formed between the upper electrode and the lower electrode, a plurality of pressure release valves are arranged on the outer wall of the rod core, the air inlet ends of the pressure release valves are communicated with the discharge cavity, and the air outlet ends of the pressure release valves are communicated with the outside. In the invention, when the insulator is struck by lightning, the pressure in the discharge cavity is increased sharply, and the pressure release valve is opened by the strong pressure, so that the discharge cavity is communicated with the outside to release the pressure in time, and the stable structure of the insulator is ensured.

Description

Line column type lightning protection insulator
Technical Field
The invention relates to the technical field of insulators, in particular to a line column type lightning protection insulator.
Background
The medium and low voltage distribution network lines are the lines which have the largest quantity, the longest accumulated length and the closest relationship with users in the power supply network, and a plurality of medium and low voltage distribution network lines extend to mountainous areas with complex terrains and high and cold climate. When the lines in the special geographical environment regions encounter severe weather, the lines are easy to have current leakage accidents caused by lightning trip, lightning broken line or large-area insulator icing bridging, and the continuous safe power supply of the power distribution network is seriously influenced.
In the prior art, an inner gap structure can be arranged in an insulator to prevent lightning. The inner gap structure is that setting up certain distance between two discharge electrodes, there is the air between this distance, for air gap, when lightning protection insulator suffered the thunderbolt, discharge between the two electrodes, but discharge and can make the inside air inflation of insulator, damaged the insulator stick core easily, current insulator does not have the warning mark after suffering the thunderbolt moreover, and inconvenient maintainer screens the state of the insulator after suffering the thunderbolt.
Disclosure of Invention
In order to solve the above problems, the present invention provides a line pole type lightning protection insulator.
The invention adopts the following technical scheme: the utility model provides a line column type lightning protection insulator, includes excellent core, full skirt cover, goes up the gold utensil, lower gold utensil, the excellent core is hollow structure, it reaches the upper and lower both ends that the gold utensil is located excellent core inner chamber respectively to go up the gold utensil, full skirt cover is established at the surface of excellent core, it is equipped with the wire casing to go up the gold utensil upper end, a plurality of resistance blocks of zonulae occludens are equipped with to excellent core inside, and the resistance block of top is connected with last gold utensil, and the resistance block and last electrode junction of bottom are equipped with the bottom electrode down, the upper end of gold utensil is equipped with the bottom electrode down, the lower extreme of gold utensil is equipped with the double-screw bolt down, it discharges the chamber to have one between upper electrode and the bottom electrode, the outer wall of excellent core is equipped with a plurality of relief valves, the inlet end and the chamber intercommunication of discharging of relief valve, the end of giving vent to anger and external intercommunication.
Preferably, the lower extreme of umbrella skirt cover is equipped with first bulge loop, the position that excellent core and first bulge loop correspond is equipped with a plurality of pressure release holes, the relief valve inlays to be established in first bulge loop and communicates with the pressure release hole, the pressure release hole communicates with the discharge chamber.
Preferably, the inner wall of the pressure relief hole is provided with an arc striking protrusion, a certain gap is formed between one end of the arc striking protrusion and the pressure relief valve, the other end of the arc striking protrusion extends into the discharge cavity, and the diameter of the arc striking protrusion is smaller than the aperture of the pressure relief hole.
Preferably, the lower end of the arc striking protrusion is provided with a connecting column, the other end of the connecting column is connected with the lower hardware fitting, the connecting column is located in the side wall of the rod core, and one side, close to the arc striking protrusion, of the pressure release valve is covered with a first insulating layer.
Preferably, the lower extreme of umbrella skirt cover is equipped with the second bulge loop, the second bulge loop is embedded to have the controller, the inner wall in discharge chamber inlays the temperature sensor who is equipped with and controller electric connection, be equipped with warning light area on the second bulge loop, the controller can be opened according to the data control warning light area of temperature sensor monitoring.
Preferably, the lateral wall of second bulge loop is equipped with the solar photovoltaic board, the embedded solar array that is equipped with rather than corresponding of second bulge loop, solar array and controller electric connection.
Preferably, the warning lamp strip is fixedly connected with the lower end face of the second convex ring.
Preferably, one side of the temperature sensor close to the discharge cavity is covered with a second insulating layer.
Preferably, the stud is of a hollow structure, an adjusting column is embedded in the stud, the adjusting column penetrates through the lower hardware fitting and is fixedly connected with the lower electrode, the adjusting column is respectively in threaded connection with the stud and the lower hardware fitting, and the lower electrode is in threaded connection with the inner wall of the discharge cavity.
The invention has at least one of the following beneficial effects:
in the invention, when the insulator is struck by lightning, the upper electrode and the lower electrode discharge electricity, the temperature in the discharge cavity rises, the pressure intensity increases sharply, and the pressure relief valve is opened by strong pressure, so that the discharge cavity is communicated with the outside to relieve the pressure in time, and the stable structure of the insulator is ensured; when the pressure release valve works normally, the sealing effect is good, and the phenomenon that impurities enter the discharge cavity to influence the arc extinguishing capability of the invention can be avoided; and when the air pressure in the discharge cavity is recovered to be normal, the pressure release valve is closed, so that the lightning protection device has a continuous lightning protection effect, a new insulator does not need to be replaced, and the service life is longer.
Drawings
FIG. 1 is a schematic view of the internal structure of a preferred embodiment of the present invention;
FIG. 2 is an enlarged schematic view of detail A of FIG. 1;
FIG. 3 is a schematic front view of the preferred embodiment of the present invention;
fig. 4 is a schematic structural diagram of a stud in a preferred embodiment of the invention.
Description of reference numerals:
the umbrella comprises a rod core 1, an umbrella skirt cover 2, an upper metal fitting 3, a lower metal fitting 4, a resistor block 11, an upper electrode 12, a lower electrode 13, a discharge cavity 14, a stud 15, a 151 adjusting column, a 16 pressure release valve, a 161 first insulating layer, a 17 first convex ring, a 18 pressure release hole, a 19 arc striking bulge, a 20 connecting column, a 21 second convex ring, a 22 controller, a 23 temperature sensor, a 231 second insulating layer, a 24 warning lamp strip, a 25 solar photovoltaic panel and a 26 solar battery pack.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center, longitudinal, transverse, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, counterclockwise" and the like refer to orientations or positional relationships illustrated in the drawings, which are used for convenience in describing the present invention and simplifying the description, and do not refer to or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.
Referring to fig. 1 to 4, in a preferred embodiment of the present invention, a line pole type lightning protection insulator includes a rod core 1, an umbrella skirt sleeve 2, an upper hardware fitting 3, and a lower hardware fitting 4, where the rod core 1 is a hollow structure, the upper hardware fitting 3 and the lower hardware fitting 4 are respectively located at upper and lower ends of an inner cavity of the rod core 1, the umbrella skirt sleeve 2 is disposed on an outer surface of the rod core 1, a wire slot is disposed at an upper end of the upper hardware fitting 3, a plurality of resistance blocks 11 are disposed inside the rod core 1, the resistance block 11 at the uppermost end is connected to the upper hardware fitting 3, the resistance block 11 at the lowermost end is connected to an upper electrode 12, a lower electrode 13 is disposed at an upper end of the lower hardware fitting 4, a stud 15 is disposed at a lower end of the lower hardware fitting 4, a discharge cavity 14 is disposed between the upper electrode 12 and the lower electrode 13, a plurality of pressure relief valves 16 are disposed on an outer wall of the rod core 1, an air inlet end of the pressure relief valves 16 is communicated with the cavity 14, and an air outlet end is communicated with the outside. In the invention, when the insulator is struck by lightning, the upper electrode 12 and the lower electrode 13 discharge electricity, the temperature in the discharge cavity 14 rises, the pressure intensity increases sharply, and the pressure relief valve 16 is opened by strong pressure, so that the discharge cavity 14 is communicated with the outside to relieve the pressure in time, and the stable structure of the insulator is ensured; when the pressure release valve 16 works normally, the sealing effect is good, and the phenomenon that impurities enter the discharge cavity 14 to influence the arc extinguishing capability of the invention can be avoided; and when the air pressure in the discharge cavity 14 is recovered to be normal, the pressure release valve 16 is closed, so that the lightning protection device has a continuous lightning protection effect, a new insulator does not need to be replaced, and the service life is longer.
As a preferred embodiment of the present invention, it may also have the following additional technical features:
the lower end of the umbrella skirt sleeve 2 is provided with a first convex ring 17, the rod core 1 is provided with a plurality of pressure relief holes 18 at positions corresponding to the first convex ring 17, a pressure relief valve 16 is embedded in the first convex ring 17 and communicated with the pressure relief holes 18, the pressure relief holes 18 are communicated with the discharge cavity 14, and the pressure relief valve 16 is fixedly connected with the first convex ring 17; in this embodiment, the air inlet end of the pressure release valve 16 is embedded in the first convex ring 17, the air outlet end is located outside the first convex ring 17, four pressure release valves 16 are provided, four corresponding pressure release holes 18 are provided, the pressure release holes 18 are frustum-shaped, one side of the pressure release valve 16 is narrow, the sensitivity of the pressure release valve 16 can be improved, the pressure release valve 16 can be opened to release pressure in time, the first convex ring 17 and the skirt sleeve 2 are of an integral structure, and the skirt sleeve 2 is made of rubber; in specific implementation, a protrusion embedded into the first convex ring 17 may be disposed on a side wall of the air inlet end of the pressure release valve 16, so that the pressure release valve 16 and the first convex ring 17 are effectively fixed; in this embodiment, the pressure relief valve 16 is a spring-type safety pressure relief valve, and the structure and principle thereof are well known to those skilled in the art, and therefore, will not be described in detail herein; in this embodiment, the first bulge loop 17 is close to the umbrella skirt at the lowest end of the umbrella skirt sleeve 2, the air outlet end of the pressure release valve 16 is located below the umbrella skirt, and the umbrella skirt can effectively shield dust and impurities, so that the air outlet end of the pressure release valve 16 is prevented from being blocked.
An arc striking bulge 19 is arranged on the inner wall of the pressure relief hole 18, a certain gap is formed between one end of the arc striking bulge 19 and the pressure relief valve 16, the other end of the arc striking bulge 19 extends into the discharge cavity 14, the diameter of the arc striking bulge 19 is smaller than the aperture of the pressure relief hole 18, the arc striking bulge 19 can perform short-circuit discharge and multi-point discharge with the upper electrode 12, the arc extinguishing capability of the invention is improved, the lightning protection effect is good, the arc striking bulge 19 and the pressure relief valve 16 are kept at a distance, and the pressure relief valve 16 can be prevented from being broken and damaged; in this embodiment, the pressure relief valve 16 is made of plastic.
The lower end of the arc striking protrusion 19 is provided with a connecting column 20, the other end of the connecting column 20 is connected with the lower hardware fitting 4, the connecting column 20 is located in the side wall of the rod core 1, one side, close to the arc striking protrusion 19, of the pressure release valve 16 is covered with a first insulating layer 161, the connecting column 20 enables the arc striking protrusion 19 to be connected with the lower hardware fitting 4, the arc extinguishing effect of the arc striking protrusion 19 is guaranteed, the insulating property of the pressure release valve 16 is further improved through the first insulating layer 161, and the pressure release valve 16 can work stably; in this embodiment, the first insulating layer 161 is a rubber layer, and the first insulating layer 161 does not cover the vent hole of the relief valve 16.
The lower end of the umbrella skirt sleeve 2 is provided with a second convex ring 21, a controller 22 is embedded in the second convex ring 21, a temperature sensor 23 electrically connected with the controller 22 is embedded in the inner wall of the discharge cavity 14, a warning lamp strip 24 is arranged on the second convex ring 21, the controller 22 can control the warning lamp strip 24 to be opened according to data monitored by the temperature sensor 23, when the temperature sensor 23 monitors that the temperature in the discharge cavity 14 rises to a certain value, a lightning stroke accident is judged to occur, at the moment, the controller 22 receives the data and controls the warning lamp strip 24 to be opened, and later-period maintenance personnel can conveniently explore the state of an insulator suffering from the lightning stroke, and the method is simple and effective; in this embodiment, the controller 22 is a micro CPU, and the warning lamp strip 24 is composed of a plurality of red LED lamp beads, so that energy is saved, and red light is convenient to probe; in specific implementation, the controller 22 can also control the warning lamp strip 24 to flicker, so that the observability is improved; in this embodiment, be equipped with the switch of being connected with warning light area 24 on the second bulge loop 21, after the staff explored the insulator that should suffer the thunderbolt, can manually close warning light area 24, otherwise warning light area 24 is in the normal bright or continuous scintillation state.
The side wall of the second convex ring 21 is provided with a solar photovoltaic panel 25, a solar battery pack 26 corresponding to the second convex ring 21 is embedded in the second convex ring 21, the solar battery pack 26 is electrically connected with the controller 22, the solar photovoltaic panel 25 converts solar energy into electric energy to be stored in the solar battery pack 26, the solar battery pack 26 supplies energy to the controller 22, the warning lamp strip 24 and the temperature sensor 23, and the solar photovoltaic panel 25 is arranged on the side wall of the second convex ring 21 and can enable the second convex ring 21 to be effectively illuminated; in this embodiment, the second bulge loop 21 is located at the lower end of the first bulge loop 17, the second bulge loop 21 and the umbrella skirt sleeve 2 are of an integral structure, and the outer diameter of the second bulge loop 21 is greater than or equal to the outer diameter of the umbrella skirt on the umbrella skirt sleeve 2, so that the umbrella skirt sleeve 2 is prevented from shielding the solar photovoltaic panel 25 on the second bulge loop 21; in this embodiment, the solar photovoltaic panel 25 is provided with a plurality of blocks, and the solar photovoltaic panel is spliced into a ring shape along the side wall of the second convex ring 21.
The warning lamp strip 24 is fixedly connected with the lower end face of the second convex ring 21, and the insulator is vertically arranged, so that a worker can conveniently observe the luminous warning lamp strip from the ground; in this embodiment, the warning light strip 24 is adapted to the lower end surface of the second convex ring 21.
One side of the temperature sensor 23 close to the discharge cavity 14 is covered with a second insulating layer 231, and the second insulating layer 231 can prevent the temperature sensor 23 from being damaged by current breakdown; in this embodiment, the second insulating layer 231 is made of a rubber material with a general heat insulation effect, so as to ensure the monitoring accuracy of the temperature sensor 23.
The stud 15 is a hollow structure, the adjusting column 151 is embedded in the stud 15, the adjusting column 151 penetrates through the lower hardware fitting 4 and is fixedly connected with the lower electrode 13, the adjusting column 151 is respectively in threaded connection with the stud 15 and the lower hardware fitting 4, the lower electrode 13 is in threaded connection with the inner wall of the discharge cavity 14, the lower electrode 13 can be driven to rotate by rotating the adjusting column 151, the position of the lower electrode 13 in the discharge cavity 14 can be changed, the lower electrode is continuously connected with the lower hardware fitting 4, the gap length of the discharge cavity 14 can be conveniently adjusted, the practicability of the arc extinguishing device is stronger, and the arc extinguishing capability is ensured; in this embodiment, the length of the adjusting column 151 is greater than that of the stud 15, and the stud 15 is fixedly connected with the lower hardware fitting 4; in this embodiment, the resistance block 11 is provided with six blocks.
The above additional technical features can be freely combined and used in superposition by those skilled in the art without conflict.
The above description is only a preferred embodiment of the present invention, and the technical solutions that achieve the objects of the present invention by basically the same means are all within the protection scope of the present invention.

Claims (9)

1. A line column type lightning protection insulator comprises a rod core (1), an umbrella skirt sleeve (2), an upper fitting (3) and a lower fitting (4), and is characterized in that the rod core (1) is of a hollow structure, the upper fitting (3) and the lower fitting (4) are respectively positioned at the upper end and the lower end of an inner cavity of the rod core (1), the umbrella skirt sleeve (2) is arranged on the outer surface of the rod core (1), a wire groove is formed in the upper end of the upper fitting (3), a plurality of resistance blocks (11) which are tightly connected are arranged in the rod core (1), the resistance block (11) at the uppermost end is connected with the upper fitting (3), the resistance block (11) at the lowermost end is connected with an upper electrode (12), a lower electrode (13) is arranged at the upper end of the lower fitting (4), a stud (15) is arranged at the lower end of the lower fitting (4), and a discharge cavity (14) is formed between the upper electrode (12) and the lower electrode (13), the outer wall of the rod core (1) is provided with a plurality of pressure release valves (16), the air inlet ends of the pressure release valves (16) are communicated with the discharge cavity (14), and the air outlet ends are communicated with the outside.
2. The post type lightning protection insulator according to claim 1, wherein a first bulge loop (17) is arranged at the lower end of the umbrella skirt sleeve (2), a plurality of pressure relief holes (18) are arranged at positions of the rod core (1) corresponding to the first bulge loop (17), the pressure relief valve (16) is embedded in the first bulge loop (17) and communicated with the pressure relief holes (18), and the pressure relief holes (18) are communicated with the discharge cavity (14).
3. The post type lightning protection insulator according to claim 2, wherein an arc striking protrusion (19) is disposed on an inner wall of the pressure relief hole (18), a gap is formed between one end of the arc striking protrusion (19) and the pressure relief valve (16), the other end of the arc striking protrusion (19) extends into the discharge cavity (14), and the diameter of the arc striking protrusion (19) is smaller than the aperture of the pressure relief hole (18).
4. The column type lightning protection insulator according to claim 3, wherein the lower end of the arc striking protrusion (19) is provided with a connecting column (20), the other end of the connecting column (20) is connected with the lower hardware fitting (4), the connecting column (20) is located in the side wall of the rod core (1), and one side of the pressure relief valve (16) close to the arc striking protrusion (19) is covered with a first insulating layer (161).
5. The post type lightning protection insulator according to claim 1, wherein a second convex ring (21) is arranged at the lower end of the umbrella skirt sleeve (2), a controller (22) is embedded in the second convex ring (21), a temperature sensor (23) electrically connected with the controller (22) is embedded in the inner wall of the discharge cavity (14), a warning light strip (24) is arranged on the second convex ring (21), and the controller (22) can control the warning light strip (24) to be turned on according to data monitored by the temperature sensor (23).
6. The post type lightning protection insulator according to claim 5, wherein the side wall of the second protruding ring (21) is provided with a solar photovoltaic panel (25), a solar battery (26) is embedded in the second protruding ring (21) and corresponds to the second protruding ring, and the solar battery (26) is electrically connected to the controller (22).
7. A post type lightning protection insulator according to claim 5, wherein the warning light strip (24) is fixedly connected to the lower end face of the second bulge loop (21).
8. A post type lightning protection insulator according to claim 5, characterised in that the side of the temperature sensor (23) adjacent to the discharge chamber (14) is covered with a second insulating layer (231).
9. The post type lightning protection insulator according to claim 1, wherein the stud (15) is a hollow structure, an adjusting post (151) is embedded in the stud (15), the adjusting post (151) penetrates through the lower fitting (4) and is fixedly connected with the lower electrode (13), the adjusting post (151) is respectively in threaded connection with the stud (15) and the lower fitting (4), and the lower electrode (13) is in threaded connection with the inner wall of the discharge cavity (14).
CN202110781728.2A 2021-07-09 2021-07-09 Line column type lightning protection insulator Pending CN113436815A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110781728.2A CN113436815A (en) 2021-07-09 2021-07-09 Line column type lightning protection insulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110781728.2A CN113436815A (en) 2021-07-09 2021-07-09 Line column type lightning protection insulator

Publications (1)

Publication Number Publication Date
CN113436815A true CN113436815A (en) 2021-09-24

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ID=77759928

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110781728.2A Pending CN113436815A (en) 2021-07-09 2021-07-09 Line column type lightning protection insulator

Country Status (1)

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CN (1) CN113436815A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01176687A (en) * 1987-12-29 1989-07-13 Fuji Electric Co Ltd Lightening arrester
CN104966594A (en) * 2015-07-10 2015-10-07 常州瑞禧电力设备有限公司 Lightning-proof explosion-proof and anti-disconnection insulator
CN206849589U (en) * 2017-07-05 2018-01-05 国网河南省电力公司商丘供电公司 Insulator lightning protection device and monitoring system
CN110010311A (en) * 2019-04-17 2019-07-12 南京艾通电气有限公司 A kind of multifunctional lightning protection insulator
CN210378628U (en) * 2019-10-22 2020-04-21 萍乡市浩洋电瓷制造有限公司 Energy-saving composite insulator
CN111969417A (en) * 2020-08-27 2020-11-20 广西序能电气设备有限公司 Piston type arc extinguishing device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01176687A (en) * 1987-12-29 1989-07-13 Fuji Electric Co Ltd Lightening arrester
CN104966594A (en) * 2015-07-10 2015-10-07 常州瑞禧电力设备有限公司 Lightning-proof explosion-proof and anti-disconnection insulator
CN206849589U (en) * 2017-07-05 2018-01-05 国网河南省电力公司商丘供电公司 Insulator lightning protection device and monitoring system
CN110010311A (en) * 2019-04-17 2019-07-12 南京艾通电气有限公司 A kind of multifunctional lightning protection insulator
CN210378628U (en) * 2019-10-22 2020-04-21 萍乡市浩洋电瓷制造有限公司 Energy-saving composite insulator
CN111969417A (en) * 2020-08-27 2020-11-20 广西序能电气设备有限公司 Piston type arc extinguishing device

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Application publication date: 20210924

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