CN207150138U - Spiral coulomb force compresses draw thunder arc extinguishing ball - Google Patents
Spiral coulomb force compresses draw thunder arc extinguishing ball Download PDFInfo
- Publication number
- CN207150138U CN207150138U CN201721151833.3U CN201721151833U CN207150138U CN 207150138 U CN207150138 U CN 207150138U CN 201721151833 U CN201721151833 U CN 201721151833U CN 207150138 U CN207150138 U CN 207150138U
- Authority
- CN
- China
- Prior art keywords
- arc
- arc extinguishing
- ball
- extinguishing
- hemisphere
- 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
Links
Landscapes
- Insulators (AREA)
Abstract
The utility model discloses a kind of spiral coulomb force compresses and draws thunder arc extinguishing ball, including two arc extinguishing hemisphere and one draw thunder ball；The center of arc extinguishing hemisphere is provided with the groove adaptable with drawing thunder ball size；The arc extinguishing path being made up of some sections of arc extinguishing passages is provided with the body interior of arc extinguishing hemisphere, arc-extinguishing tube is placed with each section of arc extinguishing passage, and the end of arc-extinguishing tube adjacent two-by-two is connected；Air-flow is provided with arc extinguishing passage joint adjacent two-by-two and sprays passage, air-flow sprays the outer surface that passage extends to arc extinguishing hemisphere；An arc electrode is provided with the top of the outer surface of ball of arc extinguishing half；In arc extinguishing path, the head end of first arc-extinguishing tube is connected with arc electrode, and the end of last arc-extinguishing tube is connected with drawing thunder ball.The utility model is simple and reliable for structure, attracts lightning leader, reduces because of the transmission line of electricity shielding accident that thunder and lightning intercepts failure and triggers；Lightning current is compressed to elongate and draws and attenuates and sprays, by arc extinction, reduces and strikes back probability caused by the lightning conducter that is struck by lightning.
Description
Technical field
It the utility model is related to a kind of lightning-arrest arc-control device, and in particular to a kind of spiral coulomb force compresses draw thunder arc extinguishing
Ball.
Background technology
Currently in order to protect the wire of transmission line of electricity is few to be struck by lightning, generally using erection lightning conducter, China's electric power row
Industry standard DL/T620-1997《The overvoltage protection and Insulation Coordination of alternating-current electric device》The 6.1.2 articles regulation：110kV is along complete
Coil holder sets lightning conducter, in the special strong area in mountain area and lightening activity, preferably along completely erection lightning conducter.The structure of the lightning conducter is
An exposed steel strand wires are installed on the top of left and right transmission tower above three-phase power transmission wire, and the steel strand wires be both lightning-arrest
Line, the lightning conducter are turned on by the transmission tower and the earth of both sides.But thunder scarce capacity is drawn due to existing lightning conducter, transmitted electricity
After circuit is using every conventional lightning protection measures, the damage to crops caused by thunder tripping operation of transmission line of electricity or a lot, external and China Fujian, Guangdong, lake
The ground such as north, northeast, North China transmission line of electricity tripping times statistical result, in tripping times caused by a variety of causes, damage to crops caused by thunder tripping operation
Number accounts for the first place of total tripping times.Such as：《High-Voltage Technology》1st phase in 2008, the operation of Yi Hui ' China transmission line of electricity are existing
The 2002-2004 nationwide integrated power grid fault statistics tables that shape and the lightning protection text of ' one provide, the line tripping caused by 9 kinds of reasons
In total degree 231 times, damage to crops caused by thunder trips 129 times, accounts for the 55.8% of total degree, ranks first；And for example 2005-2007 Beijing electric power is public
Tripping operation 442 times, wherein lightning stroke trip 198 times occur altogether for department's more than 35kV overhead transmission lines, account for the 44.8% of total degree, also occupy
It is the first.Transmission line of electricity operating statistic result shows：Trip-out rate causes with counterattack caused by circuit thunderbolt in plains region
Trip-out rate it is substantially suitable；And in mountain route because with a varied topography, the angle of gradient influence, gear are away from span is big, wind makes lightning conducter
Increased with the throw of wire, or even swing in opposite direction occur in wire and lightning conducter, lightning conducter is added with wire horizontal range
Greatly, i.e., lightning conducter becomes big to the shielding angle of wire, causes risk of shielding failure more much greater than risk of flashback.Above-mentioned generation lightning stroke trip accident
Circuit set up and lightning conducter and employ conventional various shocking preventing technology measures, it is seen that existing various shocking preventing technologies are arranged
Apply the safe operation it is impossible to ensure that transmission line of electricity.
Utility model content
The purpose of this utility model is to be directed to some shortcomings existing for prior art, it is proposed that a kind of lightning-arrest effect is more
Good, the spiral coulomb force compresses on lightning conducter draw thunder arc extinguishing ball.
To achieve these goals, the utility model employs following technical scheme：
A kind of spiral coulomb force compresses draw thunder arc extinguishing ball, including two arc extinguishing hemisphere and one draw thunder ball；Described goes out
The center of arc hemisphere is provided with the groove adaptable with drawing thunder ball size；The described thunder ball that draws is placed in groove；In arc extinguishing
The body interior of hemisphere is provided with the arc extinguishing path being made up of some sections of arc extinguishing passages, is placed with and goes out in each section of arc extinguishing passage
Arc pipe, and the end of arc-extinguishing tube adjacent two-by-two is directly touched connection or connected by electric-conductor；Gone out adjacent two-by-two
Arc passage joint is provided with air-flow and sprays passage, air-flow sprays passage and extends to the outer surface of arc extinguishing hemisphere, i.e. arc extinguishing hemisphere
Outer surface is provided with air-flow ejiction opening；An arc electrode is provided with the top of the outer surface of ball of arc extinguishing half；In arc extinguishing path, first
The head end of individual arc-extinguishing tube is connected with arc electrode, and the end of last arc-extinguishing tube is connected with drawing thunder ball（Or lightning-arrest
When being installed on line, directly it is connected with lightning conducter）.
In the utility model, an arc extinguishing ball has been installed additional in the face outside thunder ball of drawing of routine（By two arc extinguishing hemisphere groups
Into）；The arc extinguishing path being made up of accordingly arc-extinguishing tube is provided with inside arc extinguishing ball, by guiding and limiting the path of electric arc,
There are multiple electric arc flex points, producing air blast in electric arc flex point carries out arc extinguishing, serves good lightning protection arc quenching effect, ensures transmission of electricity
The safe and stable operation of circuit.In the utility model, arc extinguishing path can be only set on an arc extinguishing hemisphere wherein, also may be used
To be respectively provided with arc extinguishing path in two arc extinguishing hemisphere.
Further illustrated as the utility model, the structure setting of upper and lower two arc extinguishing hemisphere is identical.Same knot is set
Arc extinguishing path of structure etc., so lightning-arrest arc quenching effect is more preferably.
Further illustrated as the utility model, upper and lower two arc extinguishing hemisphere passes through non-conducting material material（As plastics,
Rubber etc.）Bolt be fixedly installed togather.The mounting means of two arc extinguishing hemisphere can be selected according to needs of production
Select, as long as can be fixedly installed togather, such as can use in the periphery of arc extinguishing hemisphere along extended installation sheet, then
They are fixed together with nonconducting bolt assembly；Bolt, bolt hole etc. can also be set in arc extinguishing hemisphere, then use
Inlay or installation etc. is fixed in the mode of buckle.
Further illustrated as the utility model, described arc extinguishing hemisphere uses non-conducting material（Such as plastics, rubber）
It is made.
Further illustrate that described arc extinguishing path is set in the shape of a spiral from top to bottom as the utility model.
Further illustrated as the utility model, described arc-extinguishing tube mainly leads arc ball group by two thin ceramic tubes and one
Into described arc ball of leading is placed between two thin ceramic tubes；The both ends end of described thin ceramic tubes is respectively equipped with conductive gold
Belong to ring.
Further illustrated as the utility model, described electric-conductor uses copper sheet either electric wire or three-way pipe.
Being further illustrated as the utility model, the port of the left and right sides of described three-way pipe is provided with conductive metal ring,
Point to air-flow and spray passage in middle port.
Further illustrate that the outer surface of described arc extinguishing hemisphere is provided with shirt rim as the utility model.Described shirt rim
Trend moves towards corresponding with the setting of air-flow ejiction opening.I.e. shirt rim is set along air-flow ejiction opening.
In the utility model, arc electrode, arc ball is led, draws thunder ball and uses graphite material or conducting metal material（Such as
Copper etc.）It is made.
Operation principle of the present utility model：
The utility model is made up of the arc extinguishing layer for drawing thunder ball and insulation, and lightning leader senses aggregation in drawing for internal layer on thunder ball
The substantial amounts of charges of different polarity, very strong Coulomb force is produced, has draw to lightning leader, because the charges of different polarity of wire sensing are remote
Not as drawing thunder ball, therefore thunder and lightning is easily drawn thunder ball and attracted, and the outer layer for drawing thunder ball has the arc extinguishing ball of insulation, passes through striking
The arc extinguishing path that electrode introduces thunder and lightning in arc extinguishing ball, due to the striking for the leading arc ball effect in arc-extinguishing tube, the path quilt of electric arc
Limit, compressed when electric arc passes through arc extinguishing passage in arc extinguishing path, elongate drawing-down, electric arc spout is formed in flex point.
According to compression temperature-rise effect：
（1）Compression section quantity of heat production increase causes temperature rise --- and compression causes electric arc seriously to attenuate, and resistance and pressure drop become big.
The lower compression arc section absorbed power of current source effect becomes big, quantity of heat production and temperature increase.
（2）Compression section heat dissipation capacity, which reduces, causes temperature rise --- and compression arc uses heat-barrier material, and compression causes electric arc to attenuate
Cause radiating surface to reduce and block energy loss passage, temperature rise is serious.
Further according to temperature rise directional explosion arc extinguishing effect：
（1）Compression section electric arc temperature rise directional explosion arc extinguishing effect --- compression temperature rise seriously causes arc temperature higher than non-depressed
Contracting section, produce from compression section to uncompressed section of explosive expansion-injection air-flow, form compression failure effect.
（2）Directional explosion air-flow forms T-shaped transverse compression breakaway poing in flex point junction --- overall multiple zigzag pressures
Contracting channel layout, foring the mutation flex point between cell compression passage has T-shaped pressure channel again, electric arc directional explosion point side
To vertical with electric arc, it is ensured that electric arc is effectively extinguished.
In the utility model, some spiral coulomb force compresses are concatenated on the lightning conducter of a span and draw thunder arc extinguishing ball
（Draw thunder ball to be electrically connected with lightning conducter）, when having two or more pieces lightning conducter, spiral coulomb force compresses are drawn thunder arc extinguishing ball and kept away
Be interspersed on thunder line, the spacing distance between ball according to situations such as voltage class, landform, landforms, air-flow carry out selection so as to
Form spiral coulomb force compresses and draw thunder arc extinguishing ball string.Each spiral coulomb force compresses is drawn thunder arc extinguishing ball and included two layers, inner
One layer of face is striking metal layers of balls（Draw thunder ball）, one layer of outside is insulation arc extinguishing layer（Arc extinguishing ball）.
The advantages of the utility model：
1. the utility model is simple and reliable for structure, attract lightning leader, reduce because of the transmission of electricity that thunder and lightning intercepts failure and triggers
Circuit shielding accident.
Draw and attenuate and spray 2. the utility model compresses lightning current to elongate, arc extinction is reduced because thunderbolt lightning conducter is made
Into counterattack probability.
3. different from baking aerogenesis apparatus, the utility model uses rigid hard material, service life length, passes through the fast of arc extinguishing
Speed is by arc extinction in the period of most fragile, and toasting aerogenesis retardance easily causes the failure of arc extinguishing.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the utility model one.
Fig. 2 is the arc extinguishing path schematic diagram in the embodiment of the utility model one.
Reference：1- arc extinguishing hemisphere, 2- draw thunder ball, 3- arc electrodes, 4- air-flow ejiction openings, 5- arc extinguishings path.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
Embodiment 1：
As shown in Figure 1 and Figure 2, a kind of spiral coulomb force compresses draw thunder arc extinguishing ball, including two arc extinguishing hemisphere 1 and one
Draw thunder ball 2；The center of described arc extinguishing hemisphere 1 is provided with the groove adaptable with drawing the size of thunder ball 2；Described draws thunder ball 2
It is placed in groove；The arc extinguishing path 5 being made up of some sections of arc extinguishing passages is provided with the body interior of arc extinguishing hemisphere 1, each
Arc-extinguishing tube is placed with section arc extinguishing passage, and connection is directly touched in the end of arc-extinguishing tube adjacent two-by-two；Adjacent two-by-two
Arc extinguishing passage joint be provided with air-flow and spray passage, air-flow sprays passage and extends to the outer surface of arc extinguishing hemisphere 1, i.e. arc extinguishing half
The outer surface of ball 1 is provided with air-flow ejiction opening 4；An arc electrode 3 is provided with the top of the outer surface of arc extinguishing hemisphere 1；On arc extinguishing road
In footpath 5, the head end of first arc-extinguishing tube is connected with arc electrode 3, and the end of last arc-extinguishing tube is connected with drawing thunder ball 2
Connect.The structure setting of upper and lower two arc extinguishing hemisphere 1 is identical.The spiral shell that upper and lower two arc extinguishing hemisphere 1 passes through non-conducting material material
Bolt is fixedly installed togather.Described arc extinguishing hemisphere 1 is made of non-conducting material.
Described arc extinguishing path 5 is set in the shape of a spiral from top to bottom.Described arc-extinguishing tube mainly by two thin ceramic tubes and
One is led arc ball composition, and described arc ball of leading is placed between two thin ceramic tubes；The both ends end part of described thin ceramic tubes
She You not conductive metal ring.
Embodiment 2：
A kind of spiral coulomb force compresses draw thunder arc extinguishing ball, including two arc extinguishing hemisphere 1 and one draw thunder ball 2；Described
The center of arc extinguishing hemisphere 1 is provided with the groove adaptable with drawing the size of thunder ball 2；The described thunder ball 2 that draws is placed in groove；
The body interior of arc extinguishing hemisphere 1 is provided with the arc extinguishing path 5 being made up of some sections of arc extinguishing passages, is put in each section of arc extinguishing passage
Arc-extinguishing tube is equipped with, and the end of arc-extinguishing tube adjacent two-by-two is connected by electric-conductor；Connect in arc extinguishing passage adjacent two-by-two
Place is provided with air-flow and sprays passage, and air-flow sprays the outer surface that passage extends to arc extinguishing hemisphere 1, i.e. the outer surface of arc extinguishing hemisphere 1 is set
There is air-flow ejiction opening 4；An arc electrode 3 is provided with the top of the outer surface of arc extinguishing hemisphere 1；In arc extinguishing path 5, first goes out
The head end of arc pipe is connected with arc electrode 3, and the end of last arc-extinguishing tube is connected with drawing thunder ball 2.Upper and lower two arc extinguishings
The structure setting of hemisphere 1 is identical.Upper and lower two arc extinguishing hemisphere 1 is fixedly installed togather by the bolt of non-conducting material material.
Described arc extinguishing hemisphere 1 is made of non-conducting material.
Described arc extinguishing path 5 is set in the shape of a spiral from top to bottom.Described arc-extinguishing tube mainly by two thin ceramic tubes and
One is led arc ball composition, and described arc ball of leading is placed between two thin ceramic tubes；The both ends end part of described thin ceramic tubes
She You not conductive metal ring.Described electric-conductor uses copper sheet.
The outer surface of described arc extinguishing hemisphere 1 is provided with shirt rim.The trend of described shirt rim and the setting of air-flow ejiction opening are walked
To corresponding.
Embodiment 3：
A kind of spiral coulomb force compresses draw thunder arc extinguishing ball, including two arc extinguishing hemisphere 1 and one draw thunder ball 2；Described
The center of arc extinguishing hemisphere 1 is provided with the groove adaptable with drawing the size of thunder ball 2；The described thunder ball 2 that draws is placed in groove；
The body interior of arc extinguishing hemisphere 1 is provided with the arc extinguishing path 5 being made up of some sections of arc extinguishing passages, is put in each section of arc extinguishing passage
Arc-extinguishing tube is equipped with, and the end of arc-extinguishing tube adjacent two-by-two is connected by electric-conductor；Connect in arc extinguishing passage adjacent two-by-two
Place is provided with air-flow and sprays passage, and air-flow sprays the outer surface that passage extends to arc extinguishing hemisphere 1, i.e. the outer surface of arc extinguishing hemisphere 1 is set
There is air-flow ejiction opening 4；An arc electrode 3 is provided with the top of the outer surface of arc extinguishing hemisphere 1；In arc extinguishing path 5, first goes out
The head end of arc pipe is connected with arc electrode 3, and the end of last arc-extinguishing tube is connected with drawing thunder ball 2.Upper and lower two arc extinguishings
Hemisphere 1 is fixedly installed togather by the bolt of non-conducting material material.Described arc extinguishing hemisphere 1 uses non-conducting material system
Into.
Described arc extinguishing path 5 is set in the shape of a spiral from top to bottom.Described arc-extinguishing tube mainly by two thin ceramic tubes and
One is led arc ball composition, and described arc ball of leading is placed between two thin ceramic tubes；The both ends end part of described thin ceramic tubes
She You not conductive metal ring.Described electric-conductor uses three-way pipe.The port of the left and right sides of described three-way pipe is provided with conduction
Becket, middle port point to air-flow and spray passage.
The outer surface of described arc extinguishing hemisphere 1 is provided with shirt rim.The trend of described shirt rim and the setting of air-flow ejiction opening are walked
To corresponding.
Claims (10)
1. a kind of spiral coulomb force compresses draw thunder arc extinguishing ball, it is characterised in that：Including two arc extinguishing hemisphere（1）Draw thunder with one
Ball（2）；Described arc extinguishing hemisphere（1）Center be provided with drawing thunder ball（2）The adaptable groove of size；Described draws thunder ball
（2）It is placed in groove；In arc extinguishing hemisphere（1）Body interior be provided with the arc extinguishing path that is made up of some sections of arc extinguishing passages（5）,
Arc-extinguishing tube is placed with each section of arc extinguishing passage, and connection or logical is directly touched in the end of arc-extinguishing tube adjacent two-by-two
Cross electric-conductor connection；Air-flow is provided with arc extinguishing passage joint adjacent two-by-two and sprays passage, air-flow sprays passage and extended to and goes out
Arc hemisphere（1）Outer surface, i.e. arc extinguishing hemisphere（1）Outer surface be provided with air-flow ejiction opening（4）；In arc extinguishing hemisphere（1）Outer surface
Top be provided with an arc electrode（3）；In arc extinguishing path（5）It is interior, the head end and arc electrode of first arc-extinguishing tube（3）It is connected
Connect, the end of last arc-extinguishing tube is with drawing thunder ball（2）It is connected.
2. spiral coulomb force compresses according to claim 1 draw thunder arc extinguishing ball, it is characterised in that：Upper and lower two arc extinguishings
Hemisphere（1）Structure setting it is identical.
3. spiral coulomb force compresses according to claim 2 draw thunder arc extinguishing ball, it is characterised in that：Upper and lower two arc extinguishings
Hemisphere（1）It is fixedly installed togather by the bolt of non-conducting material material.
4. draw thunder arc extinguishing ball according to any described spiral coulomb force compresses of claim 1-3, it is characterised in that：Described goes out
Arc hemisphere（1）It is made of non-conducting material.
5. spiral coulomb force compresses according to claim 1 draw thunder arc extinguishing ball, it is characterised in that：Described arc extinguishing path
（5）Set in the shape of a spiral from top to bottom.
6. spiral coulomb force compresses according to claim 1 draw thunder arc extinguishing ball, it is characterised in that：Described arc-extinguishing tube master
Arc ball is led by two thin ceramic tubes and one to form, described arc ball of leading is placed between two thin ceramic tubes；Described is thin
The both ends end of earthenware is respectively equipped with conductive metal ring.
7. spiral coulomb force compresses according to claim 6 draw thunder arc extinguishing ball, it is characterised in that：Described electric-conductor is adopted
With copper sheet either electric wire or three-way pipe.
8. spiral coulomb force compresses according to claim 7 draw thunder arc extinguishing ball, it is characterised in that：Described three-way pipe
The port of the left and right sides is provided with conductive metal ring, and middle port points to air-flow and sprays passage.
9. spiral coulomb force compresses according to claim 1 draw thunder arc extinguishing ball, it is characterised in that：Described arc extinguishing hemisphere
（1）Outer surface be provided with shirt rim.
10. spiral coulomb force compresses according to claim 9 draw thunder arc extinguishing ball, it is characterised in that：Described shirt rim
Trend moves towards corresponding with the setting of air-flow ejiction opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721151833.3U CN207150138U (en) | 2017-09-10 | 2017-09-10 | Spiral coulomb force compresses draw thunder arc extinguishing ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721151833.3U CN207150138U (en) | 2017-09-10 | 2017-09-10 | Spiral coulomb force compresses draw thunder arc extinguishing ball |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207150138U true CN207150138U (en) | 2018-03-27 |
Family
ID=61678123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721151833.3U Active CN207150138U (en) | 2017-09-10 | 2017-09-10 | Spiral coulomb force compresses draw thunder arc extinguishing ball |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207150138U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111834915A (en) * | 2019-04-16 | 2020-10-27 | 段小嬿 | Method and system for back-flushing extinguishing arc plasma |
-
2017
- 2017-09-10 CN CN201721151833.3U patent/CN207150138U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111834915A (en) * | 2019-04-16 | 2020-10-27 | 段小嬿 | Method and system for back-flushing extinguishing arc plasma |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106451078B (en) | Electric arc compresses arc extinguishing lightning protection clearance apparatus | |
| CN105938978A (en) | Multi-gap lightning-protection insulator used for alternating-current overhead transmission line | |
| CN203787766U (en) | Composite jet stream lightning protection and arc extinguishing gap device | |
| CN107732663B (en) | Coulomb force traction ball-type compressed jet airflow arc extinguishing device and ball-type arcing horn | |
| CN203747241U (en) | Air gap lightning arrester | |
| CN104779522A (en) | Lightning dredger with insulator function | |
| CN106971901A (en) | Great-current fixed sealed pole and its manufacture method | |
| CN207150138U (en) | Spiral coulomb force compresses draw thunder arc extinguishing ball | |
| CN206595098U (en) | Combine disc type Multiple level arrester | |
| CN207426401U (en) | The ball-type compression injection air-flow arc-control device and ball-type arcing horn of Coulomb force traction | |
| CN107546575A (en) | One kind is vertical to blow a coulomb force compresses and draws thunder arc extinguishing ball and double-ball type arcing horn | |
| CN107732662A (en) | A kind of transverse and longitudinal blows a coulomb force compresses and draws thunder arc extinguishing ball and double-ball type arcing horn | |
| CN207149879U (en) | Longitudinal both sides distribution coulomb force compresses draw thunder arc extinguishing ball | |
| CN203367745U (en) | Sectionalized arc extinguishing type lightning protection gap device for different voltage grades | |
| CN107508144A (en) | Longitudinal both sides distribution coulomb force compresses draw thunder arc extinguishing ball | |
| CN207116916U (en) | One kind is vertical to blow a coulomb force compresses and draws thunder arc extinguishing ball and double-ball type arcing horn | |
| CN207116915U (en) | A kind of transverse and longitudinal blows a coulomb force compresses and draws thunder arc extinguishing ball and double-ball type arcing horn | |
| CN107492862A (en) | Spiral coulomb force compresses draw thunder arc extinguishing ball | |
| CN206672851U (en) | Great-current fixed sealed pole | |
| CN206480440U (en) | A kind of central lightning stroke flashover arc extinguishing lightning protection device of compression line span | |
| CN205790939U (en) | A kind of spiral type Multiple level spark gap | |
| CN106328327B (en) | A kind of compression line span center lightning stroke flashover arc extinguishing lightning protection device | |
| CN207338903U (en) | One kind compression arc extinguishing ball and double-ball type arcing horn | |
| CN209658601U (en) | A kind of trumpet type backpulsing compression arc extinguishing lightning protection device | |
| CN202759156U (en) | Novel line arrester for electric power line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |