CN105977789A - Spiral multi-gap lightning arrester - Google Patents

Spiral multi-gap lightning arrester Download PDF

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Publication number
CN105977789A
CN105977789A CN201610382210.0A CN201610382210A CN105977789A CN 105977789 A CN105977789 A CN 105977789A CN 201610382210 A CN201610382210 A CN 201610382210A CN 105977789 A CN105977789 A CN 105977789A
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CN
China
Prior art keywords
gap
arc
spiral
silicone rubber
multiple level
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
CN201610382210.0A
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Chinese (zh)
Inventor
周文俊
邱凌
喻剑辉
齐小军
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.)
WUHAN XINDIAN ELECTRICAL TECHNOLOGY Co Ltd
Wuhan University WHU
Original Assignee
WUHAN XINDIAN ELECTRICAL TECHNOLOGY Co Ltd
Wuhan University WHU
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Filing date
Publication date
Application filed by WUHAN XINDIAN ELECTRICAL TECHNOLOGY Co Ltd, Wuhan University WHU filed Critical WUHAN XINDIAN ELECTRICAL TECHNOLOGY Co Ltd
Priority to CN201610382210.0A priority Critical patent/CN105977789A/en
Publication of CN105977789A publication Critical patent/CN105977789A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00Overvoltage arresters using spark gaps
    • H01T4/16Overvoltage arresters using spark gaps having a plurality of gaps arranged in series
    • 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
    • H01T1/08Means for extinguishing arc using flow of arc-extinguishing fluid
    • 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
    • H01T1/20Means for starting arc or facilitating ignition of spark gap
    • H01T1/22Means for starting arc or facilitating ignition of spark gap by the shape or the composition of the electrodes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T4/00Overvoltage arresters using spark gaps
    • H01T4/02Details

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  • Insulators (AREA)

Abstract

The invention discloses a spiral multi-gap lightning arrester. The spiral multi-gap lightning arrester comprises a core rod; a silicone rubber umbrella disc, a multi-gap arc-extinguishing chamber system, a wire hanging head, and a base fitting, which are spirally arranged along a vertical direction of a core rod. The multi-gap arc-extinguishing chamber system also comprises a spiral silicone rubber layer arranged along the edge of the silicone rubber umbrella disc and a plurality of electrodes. A gap is arranged between every two electrodes, and the positions of the spiral silicone rubber layer corresponding to the positions of the gaps are provided with through holes, which are communicated with the outer side, and are communicated with the gaps. An arc channel is established by allowing the breakdown of the multi-short gaps, and at the same time, the arc is lengthened by adopting the high temperature and the high voltage generated by the arc until at last the arc is extinguished, and the process lasts short. The lightning current is discharged, and at the same time, tripping out of a relay protection device cannot be caused, and therefore reliability of power supply is greatly improved. Creepage distance is formed by adopting the arrangement of the silicone rubber umbrella disc having the spiral structure, and therefore the lightning arrester can be used in regions having high gradation for surface pollution.

Description

A kind of spiral type Multiple level spark gap
Technical field
The present invention relates to the spark gap in lightning protection device, be specifically related to a kind of spiral type many Gap spark gap.
Background technology
The lightning stroke trip of electric line generation in recent years, broken string and the system of insulator arc-over accident Count number is also in continuous ascendant trend.Aerial condutor lightning strike accident occurs again and again both at home and abroad, and Cause a lot of personal injury and huge economic loss.Lightning stroke trip, broken string and insulator dodge The safe operation of network accident serious threat electric line.
Installing leakage conductor is one of maximally effective measure in transmission line of electricity lightning protection.State at present Interior commonly used zinc oxide lightning arrester for power lines is equal at the aspect such as mounting structure, operation maintenance There are some problems, especially in case counterattack is master, needs three-phase all to install, required The Transmission Line Arrestor enormous amount installed, price is of a relatively high, and electric pressure is the highest, Mounting cost is the highest.Therefore, find and a kind of be suitable for the Lightning Protection of China's present situation always It it is the place, direction of numerous Thunder Protection person research.
The most carry out the air gap flash-over characteristic research for many years, studied the science at magneto hydrodynamic Opinion and technical field have accumulated rich experience.Develop multiple arc-chutes knot on this basis The lightning protection device of structure, applies on defeated distribution line.
Existing line insulator single protection the air gap in parallel is that Successful utilization is in transmission line of electricity One dredging property lightning protection mode, its action principle is when overhead transmission line is struck by lightning, Parallel connection gaps is because impulse sparkover voltage is less than the discharge voltage of insulator chain, therefore first discharges, Produce power frequency short circuiting arc subsequently.Short circuiting arc is under the common effect of electric power and heat buoyancy Move to the direction of insulator chain, finally stable in the burning of parallel connection gaps end, until system Tripping operation is extinguished.Its substantial principle is that in air arc, alternating current arc utilizes electric current natural zero-crossing point Blow-out realizes lightning protection, need with system automatic reclosing function with the use of.Work as parallel connection Circuit is inevitably reduced at the electricity that was struck by lightning when portable protective gaps is assemblied on overhead transmission line in a large number The dielectric level of pressure, resistance to thunder level also can reduce, and the reduction of line lightning resisting level is often Cause the rising of lightning outage rate.
Summary of the invention
The purpose of the present invention is exactly the shortcoming and defect being to overcome existing lightning protection measures to exist, A kind of spiral type Multiple level spark gap based on multiple short air gap power frequency continued flow arc quenching principle is provided.
For achieving the above object, the spiral type Multiple level spark gap designed by the present invention, including Plug, along the silicone rubber umbrella disk of plug vertical direction Spiral distribution, along silicone rubber umbrella disk edge Arrange Multiple level arc-chutes system, be connected to the hanging wire head of plug one end and be connected to plug The base gold utensil of the other end;Described Multiple level arc-chutes system also includes along described silicone rubber umbrella Web is along the helical form silastic-layer arranged and is uniformly embedded in described helical form along the hand of spiral Multiple electrodes in silastic-layer, have gap, described helical form between the most adjacent two electrodes Silastic-layer and face and have the through hole being in communication with the outside at each interstitial site is described logical Hole connects with described gap.
Further, caved inward bottom the gap between the most adjacent described two electrodes gas Chamber.
Further, the clearance distance between the most adjacent described two electrodes is 0.5~10mm, Described through-hole aperture is more than clearance distance and less than electrode diameter.
Further, the opening part edge of the described each through hole of helical form silastic-layer is provided with Projection, described projection forms outlet protection hole to the outlet introversion of described through hole.
Further, described electrode is spherical steel ball or cylindrical steel ball.
Further, described air cavity is peach-shaped air cavity.
The beneficial effects of the present invention is: the spiral type Multiple level spark gap of the present invention allows many Heavily short air gap is breakdown sets up arc channel, and the High Temperature High Pressure that application electric arc produces simultaneously is elongated Electric arc, until last arc extinction, this process duration is extremely short, at lightning current of releasing While protective relaying device action will not be caused to trip, the reliability of power supply obtains the biggest Improve;Arc-chutes unit is distributed along the silicone rubber umbrella disk edge of helical structure, this layout side Formula fully and reasonably make use of space and height, as much as possible distribution arc-chutes unit. This design allows the whole height of spark gap and gap number to enter with the electric pressure of working line Row sum-equal matrix;The silicone rubber umbrella disk arrangement form of helical structure defines bigger creep distance simultaneously, This spark gap can be used in the area that gradation for surface pollution is higher.
Accompanying drawing explanation
Fig. 1 is the structural representation of spiral type Multiple level spark gap of the present invention;
Fig. 2 is the structural representation of arc-chutes unit in Fig. 1.
In figure: plug 1, silicone rubber umbrella disk 2, Multiple level arc-chutes system 3, hanging wire head 4, Base gold utensil 5, helical form silastic-layer 6, electrode 7, gap 8, through hole 9, air cavity 10, Projection 11, protection hole 12.
Detailed description of the invention
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Be illustrated in figure 1 designed by the present invention is former based on multiple short air gap power frequency continued flow arc extinguishing The spiral type Multiple level spark gap of reason, including plug 1, along plug 1 vertical direction Spiral distribution Silicone rubber umbrella disk 2, along silicone rubber umbrella disk 2 edge arrange Multiple level arc-chutes system 3, It is connected to the hanging wire head 4 of plug 1 one end and is connected to the base gold utensil 5 of plug 1 other end, And be fixed on the cross-arm of AC power line line pole tower by base gold utensil 5.Shown in Fig. 2, Multiple level arc-chutes system 3 includes the helical form silicone rubber arranged along silicone rubber umbrella disk 2 edge Layer 6 and the multiple electrodes 7 being uniformly embedded in helical form silastic-layer 6 along the hand of spiral, often Have between adjacent two electrodes 7 gap 8 between gap 8, and the most adjacent two electrodes 7 away from From for 0.5~10mm;Helical form silastic-layer 6 and face position, each gap 8 and have The through hole 9 being in communication with the outside, through hole 9 connects with gap 8, and through hole 9 aperture is more than gap 8 distances and less than electrode 7 diameter, prevent electrode 7 landing from going out helical form silastic-layer 6;I.e. Gap 8 between adjacent two electrodes 7, adjacent two electrodes 7, adjacent two electrodes 7 weeks The helical form silastic-layer 6 and the through hole 9 corresponding with gap 8 that enclose form going out of one end open Fewer than the number of electrode one of arc chamber unit, the i.e. number of arc-chutes unit, helical form silicon rubber Glue-line 6 and the multiple electrodes 7 being embedded in helical form silastic-layer 6 are formed multiple short (0.5~10mm) gap.
When the overvoltage produced in transmission line of electricity reaches certain value, spiral type Multiple level is taken shelter from the thunder Each short air gap in device is breakdown, forms arc channel, and lightning current is multiple short by series connection Gap arc quenching system is released.Owing to the lightning current persistent period is extremely short, typically arrive tens Released in hundreds of microsecond, when gap is breakdown, the power-frequency voltage meeting being added on device Power frequency continued flow is produced along this arc channel.When electric arc is set up the most between two electrodes, Arc length is the shortest, and in arc-chutes internal-combustion, consequent high temperature can make arc-chutes Bottom gas drastically expands, and air pressure is increased dramatically, and arc-chutes are one end open, electric arc Move towards opening direction under the ordering about of air pressure, and electric arc starting point is held essentially constant, electricity Arc is elongated rapidly, and arc road resistance increases, and arc current can reduce, owing to electric arc volt-ampere is special Property be negative, arc voltage increase, electric current persistently reduces, arc voltage increase until both end voltage dimension Do not hold arc burning, arc extinction;Simultaneously during this, electric arc is elongated to arc extinguishing Outside room, the arc blowing function of air accelerates the cooling of electric arc, is more beneficial for the extinguishing of electric arc, Accelerate the arc extinguishing process of spark gap.It is to be produced by electric arc itself owing to producing the ability of arc blow-out, Arc current is the biggest, and temperature is the highest, and gas expansion is the rapidest, and arc blow-out effect is the best;Otherwise, When arc current is less, arc blow-out effect is the most less obvious.The most both released lightning current, and again could Extinguishing power frequency continued flow before protective relaying device sends actuating signal, circuit will not trip, Reach the purpose not having a power failure.Due to air, there is splendid insulation self-healing again, its Service life is longer, can be that line thunder protection provides a kind of measure economically and efficiently, therefore have Have broad application prospects.
In the present embodiment, electrode 7 is spherical steel ball 7 or cylindrical steel ball 7, due to electrode 7 it Between clearance distance less (0.5~10mm), the Electric Field Distribution between electrode 7 is more uniform, gas There is not polar effect and corona phenomenon in gap electric discharge, the dispersibility of electric discharge is the least, is going out simultaneously Arc intracavity portion, the gas heat that gap breakdown causes increases, and short time inner high voltage gas can only Along through hole direction, electric arc is outwards blown out, there is good blow-out performance.
The silicone rubber umbrella disk of spiral type Multiple level spark gap uses helical structure distribution, arc-chutes Unit is distributed along the silicone rubber umbrella disk edge of helical structure, and this arrangement is abundant and reasonable Make use of space and height, as much as possible distribution arc-chutes unit.This design allows to keep away Whole height and the gap number of thunder device are adjusted with the electric pressure of working line;Simultaneously The silicone rubber umbrella disk arrangement form of helical structure defines bigger creep distance so that this spark gap Can use in the area that gradation for surface pollution is higher.Spiral Multiple level spark gap entirety of the present invention is tied Structure is simple, and the steel ball electrode of employing and common silicone rubber insulation material are respectively provided with excellence Performance and cheap.
The air cavity 10 it addition, caved inward bottom gap 8 between the most adjacent two electrodes 7, And air cavity 10 is peach-shaped air cavity 10, the high temperature that arc burning produces makes the gas in air cavity 10 Drastically expanding, consequent high pressure orders about electric arc and moves to through hole;Helical form silicone rubber Each through hole 9 end edge of layer 6 is along being provided with protruding 11, protruding 11 to the outlet of through hole 9 Introversion forms outlet protection hole 12, is used for protecting through hole 9 and gap 8 without falling into filth.

Claims (6)

1. a spiral type Multiple level spark gap, including plug (1), erects along plug (1) Nogata is to the silicone rubber umbrella disk (2) of Spiral distribution, along silicone rubber umbrella disk (2) edge layout Multiple level arc-chutes system (3), the hanging wire head (4) being connected to plug (1) one end and company It is connected on the base gold utensil (5) of plug (1) other end;It is characterized in that: described Multiple level goes out Arc chamber system (3) also includes the helical form silicon arranged along described silicone rubber umbrella disk (2) edge Rubber layer (6) and in be uniformly embedded in described helical form silastic-layer (6) along the hand of spiral Multiple electrodes (7), have gap (8), described spiral between the most adjacent two electrodes (7) Shape silastic-layer (6) and face each gap (8) position and have and be in communication with the outside Through hole (9), described through hole (9) connects with described gap (8).
Spiral type Multiple level spark gap the most according to claim 1, it is characterised in that: Caved inward bottom gap (8) between the most adjacent described two electrodes (7) air cavity (10).
Spiral type Multiple level spark gap the most according to claim 1 and 2, its feature exists In: gap (8) distance between the most adjacent described two electrodes (7) is 0.5~10mm, Described through hole (9) aperture is more than gap (8) distance and less than electrode (7) diameter.
Spiral type Multiple level spark gap the most according to claim 1 and 2, its feature exists In: the opening part edge of each through hole of described helical form silastic-layer (6) (9) is provided with Protruding (11), described projection (11) forms outlet to the outlet introversion of described through hole (9) Protection hole (12).
Spiral type Multiple level spark gap the most according to claim 1 and 2, its feature exists In: described electrode (7) is spherical steel ball (7) or cylindrical steel ball (7).
Spiral type Multiple level spark gap the most according to claim 2, it is characterised in that: Described air cavity (10) is peach-shaped air cavity (10).
CN201610382210.0A 2016-06-01 2016-06-01 Spiral multi-gap lightning arrester Pending CN105977789A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107369508A (en) * 2017-07-19 2017-11-21 国网湖南省电力公司 A kind of arrester
CN107578864A (en) * 2017-08-24 2018-01-12 王巨丰 A kind of tortuous synchronous compression arc extinguishing lightning protection device with four side injection channels
CN108063366A (en) * 2017-12-07 2018-05-22 武汉水院电气有限责任公司 A kind of multi-chamber clearance lightning-proof device arc blow-out structure
CN108365519A (en) * 2018-02-07 2018-08-03 国网湖北省电力有限公司电力科学研究院 A kind of transmission line of electricity overvoltage protection
CN109859914A (en) * 2019-03-05 2019-06-07 哈尔滨理工大学 A kind of transmission system controllable metal oxide arrester
CN112117656A (en) * 2019-06-20 2020-12-22 王巨丰 Multi-solid-phase airflow multi-section synchronous arc extinguishing method and system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6108187A (en) * 1995-11-17 2000-08-22 Streamer Electric Company, Inc. Electric power transmission line with protection devices against lightning overvoltages
CN101981633A (en) * 2008-03-27 2011-02-23 Npo流光开放式股份公司 High-voltage insulator and a high-voltage electric power line using said insulator
CN205790939U (en) * 2016-06-01 2016-12-07 武汉新电电气技术有限责任公司 A kind of spiral type Multiple level spark gap

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6108187A (en) * 1995-11-17 2000-08-22 Streamer Electric Company, Inc. Electric power transmission line with protection devices against lightning overvoltages
CN101981633A (en) * 2008-03-27 2011-02-23 Npo流光开放式股份公司 High-voltage insulator and a high-voltage electric power line using said insulator
CN205790939U (en) * 2016-06-01 2016-12-07 武汉新电电气技术有限责任公司 A kind of spiral type Multiple level spark gap

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107369508A (en) * 2017-07-19 2017-11-21 国网湖南省电力公司 A kind of arrester
CN107369508B (en) * 2017-07-19 2023-06-27 国网湖南省电力公司 Lightning arrester
CN107578864A (en) * 2017-08-24 2018-01-12 王巨丰 A kind of tortuous synchronous compression arc extinguishing lightning protection device with four side injection channels
CN107578864B (en) * 2017-08-24 2024-01-30 王巨丰 Zigzag synchronous compression arc extinguishing lightning protection device with four-side injection channels
CN108063366A (en) * 2017-12-07 2018-05-22 武汉水院电气有限责任公司 A kind of multi-chamber clearance lightning-proof device arc blow-out structure
CN108063366B (en) * 2017-12-07 2023-04-21 武汉水院电气有限责任公司 Multi-chamber clearance lightning protection device blows arc structure
CN108365519A (en) * 2018-02-07 2018-08-03 国网湖北省电力有限公司电力科学研究院 A kind of transmission line of electricity overvoltage protection
CN108365519B (en) * 2018-02-07 2023-12-19 国网湖北省电力有限公司电力科学研究院 Overvoltage protection device for power transmission line
CN109859914A (en) * 2019-03-05 2019-06-07 哈尔滨理工大学 A kind of transmission system controllable metal oxide arrester
CN112117656A (en) * 2019-06-20 2020-12-22 王巨丰 Multi-solid-phase airflow multi-section synchronous arc extinguishing method and system
CN112117656B (en) * 2019-06-20 2022-04-01 王巨丰 Multi-solid-phase airflow multi-section synchronous arc extinguishing method and system

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Address after: 430073 Hubei city of Wuhan province Kuanshan Road No. 1 Optics Valley Software Park A Building 5 floor

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Application publication date: 20160928