CN106205899A - A kind of band gap compound needle type insulator - Google Patents

A kind of band gap compound needle type insulator Download PDF

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Publication number
CN106205899A
CN106205899A CN201610563385.1A CN201610563385A CN106205899A CN 106205899 A CN106205899 A CN 106205899A CN 201610563385 A CN201610563385 A CN 201610563385A CN 106205899 A CN106205899 A CN 106205899A
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CN
China
Prior art keywords
band gap
gold utensil
insulator
component
inner chamber
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CN201610563385.1A
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CN106205899B (en
Inventor
夏兰
徐勤民
丁华平
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JIANGSU YUANHANG POWER CABLE ACCESSORIES CO Ltd
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JIANGSU YUANHANG POWER CABLE ACCESSORIES CO Ltd
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Publication of CN106205899A publication Critical patent/CN106205899A/en
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00Insulators or insulating bodies characterised by their form
    • H01B17/20Pin insulators
    • HELECTRICITY
    • H01BASIC ELECTRIC 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
    • H01BASIC ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00Insulators or insulating bodies characterised by their form
    • H01B17/42Means for obtaining improved distribution of voltage; Protection against arc discharges
    • H01B17/46Means for providing an external arc-discharge path
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C7/00Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/12Overvoltage protection resistors

Abstract

The invention discloses a kind of band gap compound needle type insulator, it includes insulator component, band gap component, middle connection gold utensil, upper gold utensil, lower gold utensil;Insulator component and band gap component connect gold utensil by centre and connect;Connect gold utensil bottom in centre and be provided with the first metal link rod;The top of lower gold utensil is provided with the second metal link rod;Band gap component includes the epoxy plug being provided with inner chamber, it is provided with sheath full skirt at the outside ring set of epoxy plug, inner chamber at epoxy plug is provided with earthenware, and middle connection the first metal link rod of gold utensil, the second metal link rod of lower gold utensil stretch into formation fixed interval (FI) in earthenware from the upper and lower port of the inner chamber of epoxy plug respectively.Band gap compound needle type insulator structure of the present invention is simple, and molding is relatively easy.It is used in series with gapless arrestyer, makes gapless arrestyer realize the function of arrester with gaps, there is good lightning protection effect and reliability, be greatly improved the operation level of circuit.

Description

A kind of band gap compound needle type insulator
Technical field
The present invention relates to a kind of pin insulator, be specifically related to a kind of band gap compound needle type insulator, in this insulator Portion with fixed interval (FI), can with gapless arrestyer with the use of, make gapless arrestyer have the function of arrester with gaps.
Background technology
Transmission line of electricity especially ultra-high-tension power transmission line should be noted that a lot of problem during built on stilts laying, the most normal See is exactly the problems such as line support, line insulation and overvoltage protection.At present, insulator is used to solve support wire and prevent Only electric current returns the problem on ground, uses spark gap to exempt from atmospheric over-voltage (usually thunderbolt) with protection transmission line of electricity and electrical equipment Damage with switching overvoltage.In ultra-high-tension power transmission line, one end of insulator hangs on steel tower, and the other end hangs wire, Under normal running conditions, insulator can play support wire and the effect of insulation, but be struck by lightning at transmission line of electricity or operate During overvoltage, insulator all can occur flashover, and i.e. when overvoltage exceedes the design load that insulator can bear, insulator will be by Electric arc burn is impaired, and then causes transmission line of electricity to trip, and has undesirable effect the productive life of people, even causes bigger Economic loss.In order to protect insulator so that it is can keep normally working, it is common that use spark gap and insulator on the line Parallel connection, but, spark gap can only play the effect of lightning protection, can not be used for supporting wire, bears pulling force, and its weight and body Long-pending relatively big, increase the load of circuit and steel tower while being not easy to install, make line facility complicate.
Traditional gapless arrestyer bears power-frequency voltage the most for a long time, still suffers from overvoltage when being struck by lightning and work Frequently afterflow, therefore, spark gap is often out of order, and the most aging, and the reliability making distribution line power can not get ensureing.
External series gap spark gap (overvoltage protection device) is widely used the most in practice, and it mainly uses oxidation Zinc spark gap and external series gap compound mode.Arrester with gaps major part uses extenal fixation gap, when there being overvoltage, big electric current Puncture gap conducting, big owing to puncturing the dispersibility of gap voltage, during fixed interval (FI) is directly exposed to air in addition, the electricity punctured Pressure can be affected by environment, causes punch through spread of voltage.Arrester with gaps also has employing internal clearance structure, but mechanism is multiple Miscellaneous molding difficulty is big, and production cost is higher.
Summary of the invention
It is an object of the invention to for deficiency of the prior art, it is provided that a kind of band gap compound needle type insulator.
It is an object of the invention to be achieved through the following technical solutions:
A kind of band gap compound needle type insulator, it include insulator component 1, band gap component 2, middle connect gold utensil 3, Upper gold utensil 4, lower gold utensil 5;Described insulator component 1 and band gap component 2 connect gold utensil 3 by centre and connect;Described is upper Gold utensil 4 is located at insulator component 1 upper end;Connect in the middle of described the top of gold utensil 3 be provided with cylinder shape groove for and insulator Component 1 lower end connect, centre connect gold utensil 3 bottom be provided with the first metal link rod 6 make its underpart formed annular groove for The upper end of band gap component 2 connects;The top of described lower gold utensil 5 be provided with the second metal link rod 9 make its be internally formed annular recessed Groove connects for the lower end with band gap component 2;Described band gap component includes the epoxy plug 7 being provided with inner chamber, described Epoxy plug 7 external rings be arranged with sheath full skirt 10, the inner chamber at epoxy plug 7 is provided with earthenware 8, described in the middle of connection First metal link rod 6 of gold utensil 3, the second metal link rod 9 of lower gold utensil 5 stretch into from the upper and lower port of the inner chamber of epoxy plug 7 respectively Fixed interval (FI) is formed in earthenware 8.
Preferably, the top of described upper gold utensil 4 is provided with link slot for connecting with aerial cable;The bottom of upper gold utensil 4 It is provided with cylinder shape groove and is connected with insulator component 1 fixing.
Preferably, the bottom of described lower gold utensil 5 is provided with connecting hole.Under band gap compound needle type insulator of the present invention passes through Gold utensil is fixed on the fixed support at electric pole top.
Preferably, the inner chamber of described epoxy plug 7 is divided into lower end inner chamber and upper end inner chamber, and the bore of lower end inner chamber is more than The bore of upper end inner chamber makes inner chamber longitudinal section in " convex ";Described ceramic jacket 8 is tight at epoxy core by the second metal link rod 9 The inner chamber of rod 7.
Described epoxy plug 7 can select epoxy glass fiber leading-drawing rod.
The first described metal link rod 6 and the second metal link rod 9 stretch into the end of epoxy plug 7 inner chamber and are conical points End, is conducive to concentration of discharging.
Insulator component of the present invention is the pin insulator that this area is conventional.
It is a further object to provide a kind of lightning protection device including band gap compound needle type insulator of the present invention, Described lightning protection device includes band gap compound needle type insulator and gapless arrestyer 11, and described band gap compound needle type is exhausted The band gap component of edge is connected by being connected gold utensil 12 with gapless arrestyer 11 lower end.
Preferably, in the middle of described band gap compound needle type insulator, the outer sheathed metal fixture 13 of gold utensil 3, gold are connected Belong to fixture 13 and described one end connecting gold utensil 12 connect the band gap component making band gap compound needle type insulator with continuously Gap spark gap is connected.
Described gapless arrestyer 11 upper end is provided with puncture fixture 14 for connecting with aerial cable.
This lightning protection device not only has the performance of common pin insulator, can use as common insulator;And carry Supply another the planning function, can be applied in combination with gapless arrestyer, band gap part, gapless arrestyer and the earth Being to be connected in series, gap portion avoids being directly connected to, when circuit was operated electricity between gapless arrestyer and the earth When pressure or lightning induced voltage, fixed interval (FI) punctures, and circuit passes through spark gap to ground discharge;When circuit is properly functioning, nothing Gap spark gap is not subject to lasting power-frequency voltage, extends the service life of spark gap, though the aging breakage of spark gap, the most not Line-to-ground can be caused.
Compared to the prior art, beneficial effects of the present invention:
The invention provides a kind of band gap compound needle type insulator, this compound needle type insulator structure is simple, molding phase To easily.
It is used in series with gapless arrestyer, makes gapless arrestyer realize the function of arrester with gaps, and Owing to fixed interval (FI) is built in insulator, use pottery tube chamber to play insulating effect, can also play resistance in gap breakdown moment High temperature protection effect;The most built-in fixed interval (FI) avoids the external series gap defect by environmental effect breakdown voltage instability, ring Border moisture stable so that discharge environment is the most stable, is formed discharge channel during gap breakdown by first, second metal link rod, The design of additional taper discharge tip, substantially increases centrality and the stability of electric discharge, solves band extenal fixation gap breakdown The dispersibility of gap voltage is big, the shortcoming that breakdown voltage is unstable.When circuit is properly functioning, external series gap of having connected can play Effective buffer action, makes spark gap need not bear lasting power-frequency voltage, even and if the aging breakage of spark gap, also will not lead Cause line-to-ground.Meanwhile, only when spark gap is under the Lightning Over-voltage effect reaching certain value, after series gap, Spark gap can be made in running order, therefore, after gapless arrestyer series connection external series gap, there is good lightning protection effect with reliable Property, it is greatly improved the operation level of circuit.
Accompanying drawing explanation
Fig. 1 is the structural representation of band gap compound needle type insulator of the present invention.
Fig. 2 is the Local map of band gap component in band gap compound needle type insulator of the present invention.
The lightning protection device signal that Fig. 3 is band gap compound needle type insulator of the present invention and gapless arrestyer is applied in combination Figure.
Fig. 4 is the application schematic diagram of lightning protection device of the present invention.
In figure, 1-insulator component, 2-band gap component, connect gold utensil in the middle of 3-, the upper gold utensil of 4-, gold utensil under 5-, 6-the One metal link rod, 7-epoxy plug, 8-earthenware, 9-the second metal link rod, 10-sheath full skirt, 11-gapless arrestyer, 12- Connecting gold utensil, 13-metal fixture, 14-punctures fixture.
Detailed description of the invention
With detailed description of the invention, technical scheme is described further below in conjunction with the accompanying drawings.
Embodiment 1
As shown in Figure 1-2, a kind of band gap compound needle type insulator, it include insulator component 1, band gap component 2, in Between connect gold utensil 3, upper gold utensil 4, lower gold utensil 5;Described insulator component 1 and band gap component 2 connect gold utensil 3 even by centre Connect;Described upper gold utensil 4 is located at insulator component 1 upper end;The top connecting gold utensil 3 in the middle of described is provided with cylinder shape groove use In connecting with insulator component 1 lower end, it is provided with the first metal link rod 6 in connection gold utensil 3 bottom, centre and makes its underpart form annular Groove connects for the upper end with band gap component 2;The top of described lower gold utensil 5 is provided with the second metal link rod 9 and makes inside it Form annular groove to connect for the lower end with band gap component 2;Described band gap component includes epoxy plug 7, described Epoxy plug 7 external rings be provided with sheath full skirt 10, epoxy plug 7 inner hollow forms inner chamber, inner chamber be divided into lower end inner chamber and Upper end inner chamber, the bore of lower end inner chamber more than the bore of upper end inner chamber make inner chamber longitudinal section in " convex ", at epoxy plug 7 Inner chamber is provided with earthenware 8;The second metal link rod 9 difference of the first metal link rod 6 of gold utensil 3, lower gold utensil 5 is connected in the middle of described The upper and lower port of inner chamber from epoxy plug 7 stretches into, and by the tight earthenware 8 of the second metal link rod 9, is formed solid in earthenware 8 Fixed gap;First metal link rod 6 and the second metal link rod 9 stretch into the end of epoxy plug 7 inner chamber and are cone point.
The top of described upper gold utensil 4 is provided with link slot for connecting with aerial cable;The bottom of upper gold utensil 4 is provided with cylinder Connected in star is connected fixing with insulator component 1.
The bottom of described lower gold utensil 5 is provided with connecting hole.
Embodiment 2
As it is shown on figure 3, a kind of lightning protection device including embodiment 1 band gap compound needle type insulator, described lightning protection dress Put and include band gap compound needle type insulator and gapless arrestyer 11, in the centre of described band gap compound needle type insulator Connecting the outer sheathed metal fixture 13 of gold utensil 3, described band gap compound needle type insulator is kept away with gapless by metal fixture 13 Thunder device 11 connects makes the band gap component of band gap compound needle type insulator connect with gapless arrestyer 11;Described gapless Spark gap 11 upper end is provided with puncture fixture 13.
When specifically applying, as shown in Figure 4, kept away by link slot, the gapless of band gap compound needle type hardware fitting on insulator 4 The puncture fixture of thunder device upper end connects with aerial cable respectively, and band gap compound needle type insulator epimere and gapless arrestyer are also Connection;Band gap compound needle type insulator is fixed on the fixed support at electric pole top by the connecting hole of lower gold utensil 5.
This lightning protection device is series gap spark gap, not only has the performance of common pin insulator, also has good Lightning protection effect and reliability, be greatly improved the operation level of circuit, show themselves in that
When circuit is by switching overvoltage or lightning induced voltage, fixed interval (FI) punctures, and circuit passes through spark gap to greatly Ground electric discharge, makes gapless arrestyer realize the function of arrester with gaps, and owing to fixed interval (FI) is built in insulator, discharge ring Border is the most stable, the design of additional taper discharge tip, substantially increases centrality and the stability of electric discharge.
When circuit is properly functioning, external series gap of having connected can play effective buffer action, makes spark gap to bear Lasting power-frequency voltage, even and if the aging breakage of spark gap, be also not result in line-to-ground.Meanwhile, only when lightning-arrest Device is under the Lightning Over-voltage effect reaching certain value, after series gap, spark gap just can be made in running order.
The running example of the present embodiment lightning protection device:
Pilot is installed
In December, 2013, installs with tower insulated circuit pilot in damage to crops caused by thunder 10kV frequently suitable valley line (circuit is about 10 kilometers) (every loop line road installs one group every two Ji Ta to the present embodiment lightning protection device 50 groups on request, and chance has been installed zero-clearance zinc oxide and kept away The shaft tower of thunder device is then postponed installation), put into operation after final acceptance of construction in January, 2014.
Ruuning situation
Damage to crops caused by thunder situation contrast before and after the line lightning protection device of 10kV suitable valley, such as table 1.From table 1, band string installed by 10kV suitable valley line After the spark gap of connection gap, within 2 years, only there is 1 thunderbolt, and the suitable Long line of 10kV closed on is not changing lightning protection water Within in the case of Ping 2 years, there are 8 thunderbolts altogether.In addition, by 1 thunderbolt of 10kV suitable valley line generation in 2015 is entered Row is analyzed and is shown that branch path Long river line (this branch path does not installs series gap spark gap) that its reason is the suitable Long line of 10kV meets with Caused by thunderbolt.
In terms of ruuning situation, 10kV insulated overhead line greatly reduces thunderbolt after installing series gap spark gap Generation.
Table 1 circuit installs damage to crops caused by thunder situation contrast before and after lightning protection device
The suitable Long line total length about 3.5km of note: 10kV, valley suitable with 10kV line closes on, and does not installs series gap spark gap, is all Insulated conductor, as with reference to circuit.
Being not directed to part in the present invention the most same as the prior art maybe can use prior art to be realized.

Claims (9)

1. a band gap compound needle type insulator, it is characterised in that it include insulator component (1), band gap component (2), in Between connect gold utensil (3), upper gold utensil (4), lower gold utensil (5);Described insulator component (1) and band gap component (2) are by centre Connect gold utensil (3) to connect;Described upper gold utensil (4) is located at insulator component (1) upper end;Gold utensil (3) is connected in the middle of described Top be provided with cylinder shape groove for insulator component (1) lower end connect, centre connect gold utensil (3) bottom be provided with the first gold medal Belonging to connecting rod (6) makes its underpart form annular groove for the upper end connection with band gap component (2);Described lower gold utensil (5) Top is provided with the second metal link rod (9) makes it be internally formed annular groove for the lower end connection with band gap component (2);Described Band gap component include the epoxy plug (7) that is provided with inner chamber, be arranged with sheath full skirt in described epoxy plug (7) external rings (10), the inner chamber at epoxy plug (7) is provided with earthenware (8), described in the middle of connect gold utensil (3) the first metal link rod (6), Second metal link rod (9) of lower gold utensil (5) stretches into shape in earthenware (8) from the upper and lower port of inner chamber of epoxy plug (7) respectively Become fixed interval (FI).
Band gap compound needle type insulator the most according to claim 1, it is characterised in that the top of described upper gold utensil (4) It is provided with link slot for connecting with aerial cable;The bottom of upper gold utensil (4) is provided with cylinder shape groove and is connected with insulator component (1) Fixing.
Band gap compound needle type insulator the most according to claim 1, it is characterised in that the bottom of described lower gold utensil (5) It is provided with connecting hole.
Band gap compound needle type insulator the most according to claim 1, it is characterised in that described epoxy plug (7) interior Chamber is divided into lower end inner chamber and upper end inner chamber, and the bore of lower end inner chamber makes inner chamber longitudinal section in " type more than the bore of upper end inner chamber Type ".
Band gap compound needle type insulator the most according to claim 1, it is characterised in that described ceramic jacket (8) is by second The tight inner chamber in epoxy plug (7) of metal link rod (9).
Band gap compound needle type insulator the most according to claim 1, it is characterised in that described the first metal link rod (6) The end stretching into epoxy plug (7) inner chamber with the second metal link rod (9) is cone point.
7. the lightning protection device of the band gap compound needle type insulator that a kind includes described in claim 1, it is characterised in that described Lightning protection device includes band gap compound needle type insulator and gapless arrestyer (11), described band gap compound needle type insulator Band gap component and gapless arrestyer (11) lower end connect by being connected gold utensil (12).
Lightning protection device the most according to claim 7, it is characterised in that in described band gap compound needle type insulator Between connect gold utensil (3) the most sheathed metal fixture (13), metal fixture (13) and described connection gold utensil (12) one end connection makes The band gap component of band gap compound needle type insulator is connected with gapless arrestyer (11).
Lightning protection device the most according to claim 7, it is characterised in that described gapless arrestyer (11) upper end is provided with wears Thorn fixture (14) is for connecting with aerial cable.
CN201610563385.1A 2016-07-15 2016-07-15 A kind of band gap compound needle type insulator Active CN106205899B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106887288A (en) * 2017-03-08 2017-06-23 河南省德立泰高压电瓷电器有限公司 A kind of rain-proof lightning protection insulator
CN110060825A (en) * 2019-06-09 2019-07-26 山东厚俞实业有限公司 A kind of lightning protection needle type composite insulator and preparation method thereof

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JPH06150754A (en) * 1992-11-04 1994-05-31 Ngk Insulators Ltd Lighting arrester insulator device
CN201440352U (en) * 2009-03-11 2010-04-21 中能电力科技开发有限公司 AC transmission line composite outer sleeve metal oxide arrester with series gaps
CN102024543A (en) * 2010-12-28 2011-04-20 大连法伏安电器有限公司 Composite insulator support fixing gap line type arrester
CN203312750U (en) * 2013-05-31 2013-11-27 国家电网公司 Lightning arrester for turn-to-turn over-voltage protection of shunt reactor
CN103595005A (en) * 2013-12-05 2014-02-19 国家电网公司 Insulator type lightning arrester
CN103730216A (en) * 2014-01-16 2014-04-16 国家电网公司 10KV wiring circuit lightning protection device
CN203673900U (en) * 2014-01-16 2014-06-25 国家电网公司 10 kV distribution circuit lightning protection apparatus
CN104409969A (en) * 2014-12-02 2015-03-11 国家电网公司 Self-arc-quenching parallel gap device
CN204516529U (en) * 2014-12-27 2015-07-29 中国西电电气股份有限公司 A kind of arrester with gaps
CN105514802A (en) * 2016-01-27 2016-04-20 武汉水院电气有限责任公司 Two-stage series gap lightning flashover protector capable of being replaced in electrified mode
CN205376222U (en) * 2016-01-11 2016-07-06 武汉水院电气有限责任公司 Two -stage series gap thunderbolt flashover protector of 10kV tape insulation

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Publication number Priority date Publication date Assignee Title
JPH06150754A (en) * 1992-11-04 1994-05-31 Ngk Insulators Ltd Lighting arrester insulator device
CN201440352U (en) * 2009-03-11 2010-04-21 中能电力科技开发有限公司 AC transmission line composite outer sleeve metal oxide arrester with series gaps
CN102024543A (en) * 2010-12-28 2011-04-20 大连法伏安电器有限公司 Composite insulator support fixing gap line type arrester
CN203312750U (en) * 2013-05-31 2013-11-27 国家电网公司 Lightning arrester for turn-to-turn over-voltage protection of shunt reactor
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CN205376222U (en) * 2016-01-11 2016-07-06 武汉水院电气有限责任公司 Two -stage series gap thunderbolt flashover protector of 10kV tape insulation
CN105514802A (en) * 2016-01-27 2016-04-20 武汉水院电气有限责任公司 Two-stage series gap lightning flashover protector capable of being replaced in electrified mode

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106887288A (en) * 2017-03-08 2017-06-23 河南省德立泰高压电瓷电器有限公司 A kind of rain-proof lightning protection insulator
CN110060825A (en) * 2019-06-09 2019-07-26 山东厚俞实业有限公司 A kind of lightning protection needle type composite insulator and preparation method thereof

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