CN205376222U - Two -stage series gap thunderbolt flashover protector of 10kV tape insulation - Google Patents
Two -stage series gap thunderbolt flashover protector of 10kV tape insulation Download PDFInfo
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- CN205376222U CN205376222U CN201620021087.5U CN201620021087U CN205376222U CN 205376222 U CN205376222 U CN 205376222U CN 201620021087 U CN201620021087 U CN 201620021087U CN 205376222 U CN205376222 U CN 205376222U
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Abstract
The utility model discloses a two -stage series gap thunderbolt flashover protector of 10kV tape insulation, it includes the drainage stick, insulator and zinc oxide arrester, the high -pressure side in zinc oxide arrester (2) is fixed to the low -pressure end of insulator (1), stiff end (3.1) of the side fixed connection drainage stick (3) of the high -pressure side of insulator (1), discharge end (3.2) of drainage stick (3) are corresponding with the low -pressure end of insulator (1), form first order discharge gap, be provided with the second level discharge gap who prevents the lightning overvoltage and cut power frequency continuous current on zinc oxide arrester (2). The utility model discloses a sub - bearing structure of tape insulation has fixed main discharge gap distance, and messenger's main gap does not receive various natural condition's influence, can guarantee that thunderbolt flashover protector can effectively move, can adapt to various 10kV line Tower's installation through this kind of structure.
Description
Technical field
This utility model relates to lightening protection apparatus, particularly relates to a kind of 10kV line thunder protection protector, in particular to the two-stage series connection gap lightning stroke flashover protector of a kind of 10kV tape insulation.
Background technology
The dielectric level of 10kV distribution line is easier to occur lightning stroke flashover, and then formation power frequency arc blows wire.Overhead distribution adopts insulated conductor, solve corridor and safety problem that bare conductor cann't be solved, compared with cable, insulated conductor reduced investment, build fast, advantage is very prominent, but lightning-caused breaking problem is more prominent, the whole nation has occurred repeatedly insulated conductor breakage caused by lightning stroke accident, even also there is lightning-caused breaking accident in 35kV bare conductor, the main cause causing broken string is to build arc on lightning stroke flashover passage to form power frequency continued flow, the temperature of arc root is significantly high, at short notice wire can be blown, even bare conductor, if the electric current passed through is very big, wire can be blown.
Composite insulation cross arm, puncture arc-preventing metal utensil, lightning protection pillar insulator and the Zinc-Oxide Arresters etc. adopted at present, but the feedback according to field practice, also exist various problem, it is difficult to forms effective measures.Such as, the making of composite insulation cross arm and installation cost are relatively big, and in-site installation is complicated；Puncture arc-preventing metal utensil can affect power supply reliability and the quality of power supply, and tripping rate with lightning strike is higher, is likely to cause insulated conductor core to intake after puncturing insulating barrier, causes conducting wire sag place electrochemical corrosion broken string；The mechanical strength of the insulator of lightning protection pillar insulator is relatively low, more much lower than pin insulator, stress collection；The protection domain of Zinc-Oxide Arrester is less, and full line is installed, it is possible to cause insulated conductor core to intake, and causes sag place electrochemical corrosion broken string, bears power-frequency voltage for a long time, it is possible to cause zinc oxide valve plate aging, it is necessary to carry out operation maintenance.And currently employed Zinc-Oxide Arrester is single the air gap mainly, there is the installation not adapting to strain rod tower, wire jumper tower structure, and owing to adopting pure the air gap, exist for high-voltage conducting wires and wind pendulum phenomenon is occurring, have a strong impact on the distance of the air gap, make line security run and there is certain risk, and due to only one of which discharging gap, cause arc discharge unstable, make lightning protection device be difficult to form effective line protection, make lightning protection device be difficult to form effective circuit lightning protection.
Utility model content
The purpose of this utility model is that the shortcoming and defect overcoming existing lightning protection measures to exist; the two-stage series connection gap lightning stroke flashover protector of a kind of 10kV tape insulation is provided; the wind effectively preventing circuit is shown and existing is affected the air gap phenomenon; control the path of electrical discharge arc; reduce the tripping rate with lightning strike of circuit, improve the reliability of power supply.
For achieving the above object; the two-stage series connection gap lightning stroke flashover protector of a kind of 10kV tape insulation that this practicality provides; including insulator; conduction stick and Zinc-Oxide Arrester; it is characterized in that: the low-pressure end of described insulator is fixed on the high-pressure side of described Zinc-Oxide Arrester; the fixing end connecting described conduction stick is fixed in the side of the high-pressure side of described insulator, and the discharge end of described conduction stick is corresponding with the low-pressure end of described insulator, forms first order discharging gap；Described Zinc-Oxide Arrester is provided with second level discharging gap.
Further, described first order discharging gap is main discharge gap, and described second level discharging gap is be possible to prevent lightning surge and block the auxiliary gap of power frequency continued flow.
Further, the high-pressure side of described insulator is provided with the first connection screw rod, the first fixing nut and fixing hole, the low-pressure end of described insulator is cylindrical, the top of described cylindrical low-pressure end is provided with fixing threaded hole, being provided with the second connection screw rod on the high-pressure side of described Zinc-Oxide Arrester, described second connection screw rod is fixing with described fixing threaded hole to be connected；The bottom of described cylindrical low-pressure end is provided with fixing nut escutcheon, and the high-pressure side of described Zinc-Oxide Arrester is provided with the second fixing nut, and the described second fixing nut is fixing with described fixing nut escutcheon to be connected.
Preferably, described first order gap is the air gap of 38～42mm.
Preferably, described first order gap is the air gap of 40mm.
Further, the middle part of described Zinc-Oxide Arrester is provided with zinc oxide valve plate, and described zinc oxide valve plate is connected to two ball discharges, forms the second level discharging gap of 6～10mm between described ball discharge.
Preferably, the second level discharging gap of 7mm is formed between described ball discharge.
Further, the low-pressure end of described Zinc-Oxide Arrester is provided with the 3rd connection screw rod.
Further, described Zinc-Oxide Arrester adopts the Zinc-Oxide Arrester with external series gap for preventing lightning surge with block power frequency continued flow of the regulation meeting DL/T815-2002 " transmission line of alternation current polymeric metal oxide surge arrester " and GB11032-2000 " alternating current gapless metal oxide arrester " two standards.
The air gap between series gap and insulator and the conduction stick of Zinc-Oxide Arrester in this utility model, makes lightning stroke flashover protector will not be subject to the impact of power-frequency voltage, switching overvoltage etc. at ordinary times, thus extending the service life of lightning stroke flashover protector.By designing insulator, consolidate main discharge gap, it is to avoid main discharge gap, by the impact of various natural conditions, makes zinc oxide arc protection device adapt to the installation of various 10kV overhead line structures, is effectively controlled arc flash path.Auxiliary gap is series gap, under lightning surge effect, it is ensured that stablizing of series gap electric discharge, makes lightning stroke flashover protector effective action, limits the amplitude of lightning surge and blocks power frequency continued flow, it is prevented that insulator arc-over accident occurs.It is additionally, since Zinc-Oxide Arrester and has an external series gap, it is possible to a part of lightning current of effective absorption, except ensureing lightning stroke flashover protector effective action, the arc-rupturing capacity making lightning stroke flashover protector is higher.
Therefore; when 10kV overhead distribution is subject to being struck by lightning; lightning stroke flashover protector can puncture insulator provide discharging gap and Zinc-Oxide Arrester in discharging gap; make lightning stroke flashover protector action; lightning surge is limited under the flashover voltage of insulator; then pass through lightning stroke flashover protector to be blocked by power frequency continued flow, it is possible to prevent the line fault caused by lightning stroke flashover.
The beneficial effects of the utility model are in that:
1, adopt the pure air gap structure of two-stage series connection, it is ensured that lightning stroke flashover protector can effective action, arc-rupturing capacity is more higher than zero-clearance zinc oxide lightning arrester；
2, adopt two-stage series connection interstitial structure, make zinc oxide valve plate not have when there is no lightning current electric current to flow through, be not subject to system voltage, thus extending lightning stroke flashover protector service life, decreasing daily operation maintenance, having saved substantial amounts of manpower and financial resources；
3, firm main discharge gap is adopted, it is to avoid main gap by the impact of various natural conditions, makes zinc oxide arc protection device adapt to the installation of various 10kV overhead line structures, is effectively controlled arc flash path；
4, suitable in 10kV overhead distribution, insulated conductor breakage caused by lightning stroke accident is prevented including insulated circuit and bare conductor circuit.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model lightning stroke flashover protector.
Fig. 2 is the structural representation of insulator in Fig. 1.
Fig. 3 is the structural representation of Zinc-Oxide Arrester in Fig. 1.
Fig. 4 is the structural representation of conduction stick in Fig. 1.
Wherein: 1 insulator；
1.1 first connect screw rod；1.2 first fixing nuts；1.3 fixing holes；1.4 fixing threaded holes；1.5 fixing nut escutcheons.
2 Zinc-Oxide Arresters；
2.1 second connect screw rod；2.2 second fixing nuts, 2.3 clamp nuts, 2.4 composite sheaths, 2.5 zinc oxide valve plates, 2.6 the 3rd connect screw rod, 2.7 ball discharges.
3 conduction sticks；
3.1 fixing ends；3.2 discharge ends.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail, and following example are that this utility model is not limited to following example to explanation of the present utility model.
This utility model provides the two-stage series connection gap lightning stroke flashover protector of a kind of 10kV tape insulation; including insulator (1); Zinc-Oxide Arrester (2) and conduction stick (3); the low-pressure end of described insulator (1) is fixed on the high-pressure side of described Zinc-Oxide Arrester (2); the fixing fixing end (3.1) connecting described conduction stick (3) in the side of the high-pressure side of described insulator (1); the discharge end (3.2) of described conduction stick (3) is corresponding with the low-pressure end of described insulator (1), forms the first order discharging gap of 40mm；Described Zinc-Oxide Arrester (2) is provided with the auxiliary gap second level discharging gap being possible to prevent lightning surge He blocking power frequency continued flow.
The high-pressure side of described insulator (1) is provided with the first connection screw rod (1.1), the first fixing nut (1.2) and fixing hole (1.3), the low-pressure end of described insulator (1) is cylindrical, the top of described cylindrical low-pressure end is provided with fixing threaded hole (1.4), being provided with the second connection screw rod (2.1) on the high-pressure side of described Zinc-Oxide Arrester (2), described second connection screw rod (2.1) is fixing with described fixing threaded hole (1.4) to be connected；The bottom of described cylindrical low-pressure end is provided with fixing nut escutcheon (1.5), the high-pressure side of described Zinc-Oxide Arrester (2) is provided with the second fixing nut (2.2), described second fixing nut (2.2) is fixing with described fixing nut escutcheon (1.5) to be connected, and the low-pressure end of described Zinc-Oxide Arrester (2) is provided with the 3rd connection screw rod (2.6).
The middle part of described Zinc-Oxide Arrester (2) is provided with zinc oxide valve plate (2.5), described zinc oxide valve plate (2.5) is connected to two ball discharges (2.7), between described ball discharge (2.7), forms the second level discharging gap of 7mm.
Described Zinc-Oxide Arrester (2) adopts the Zinc-Oxide Arrester with external series gap for preventing lightning surge with block power frequency continued flow of the regulation meeting DL/T815-2002 " transmission line of alternation current polymeric metal oxide surge arrester " and GB11032-2000 " alternating current gapless metal oxide arrester " two standards.
Operation principle of the present utility model is:
The low-pressure end of described insulator (1) is fixed on the high-pressure side of described Zinc-Oxide Arrester (2), the side of the high-pressure side of described insulator (1) is fixedly installed described conduction stick (3), on the 3rd connection screw rod (2.6) that the low-pressure end of described Zinc-Oxide Arrester (2) the is arranged steel foot by the fixing line insulator of fitting, Zinc-Oxide Arrester (2) is connected in parallel on insulator (1) side.When electrical network is properly functioning, owing to forming main discharge gap between insulator (1) and conduction stick (3), and Zinc-Oxide Arrester (2) design itself has an auxiliary gap, two gaps connected are formed with the air gap of the high-pressure side of Zinc-Oxide Arrester, just can isolate power-frequency voltage, make Zinc-Oxide Arrester (2) bear voltage hardly.Two series gaps simultaneously designed, make Zinc-Oxide Arrester (2) be failure to actuate in switching overvoltage, extend the service life of Zinc-Oxide Arrester (2)；Under lightning surge effect, two the air gaps are simultaneously breakdown, and Zinc-Oxide Arrester (2) presents Low ESR, released by lightning current into ground；After lightning impulse, power-frequency voltage loads on Zinc-Oxide Arrester (2), the resistance moment of Zinc-Oxide Arrester (2) becomes big, the electric current passed through and arc current are suppressed in relatively low numerical value, increase drops in the air gap arc voltage, the insulation of the air gap recovers rapidly, and electric arc naturally extinguishes in very short time, and power frequency continued flow is interdicted completely.
Claims (8)
1. the two-stage series connection gap lightning stroke flashover protector of 10kV tape insulation; including insulator (1); Zinc-Oxide Arrester (2) and conduction stick (3); it is characterized in that: the low-pressure end of insulator (1) is fixed on the high-pressure side of Zinc-Oxide Arrester (2); the fixing fixing end (3.1) connecting conduction stick (3) in the side of the high-pressure side of insulator (1); the discharge end (3.2) of described conduction stick (3) is corresponding with the low-pressure end of described insulator (1), forms first order discharging gap；Zinc-Oxide Arrester is provided with second level discharging gap on (2).
2. the two-stage series connection gap lightning stroke flashover protector of 10kV tape insulation according to claim 1, it is characterized in that: the high-pressure side of insulator (1) is provided with the first connection screw rod (1.1), first fixing nut (1.2) and fixing hole (1.3), the low-pressure end of described insulator (1) is cylindrical, the top of described cylindrical low-pressure end is provided with fixing threaded hole (1.4), the high-pressure side of described Zinc-Oxide Arrester (2) is provided with the second connection screw rod (2.1), described second connection screw rod (2.1) is fixing with described fixing threaded hole (1.4) to be connected；The bottom of described cylindrical low-pressure end is provided with fixing nut escutcheon (1.5), the high-pressure side of described Zinc-Oxide Arrester (2) is provided with the second fixing nut (2.2), and the described second fixing nut (2.2) is fixing with described fixing nut escutcheon (1.5) to be connected.
3. the two-stage series connection gap lightning stroke flashover protector of 10kV tape insulation according to claim 1, it is characterised in that: described first order gap is the air gap of 38～42mm.
4. the two-stage series connection gap lightning stroke flashover protector of 10kV tape insulation according to claim 1 or 3, it is characterised in that: described first order gap is the air gap of 40mm.
5. the two-stage series connection gap lightning stroke flashover protector of 10kV tape insulation according to claim 1 and 2; it is characterized in that: the middle part of described Zinc-Oxide Arrester (2) is provided with zinc oxide valve plate (2.5); described zinc oxide valve plate (2.5) is connected to two ball discharges (2.7), between described ball discharge (2.7), forms the second level discharging gap of 6～10mm.
6. the two-stage series connection gap lightning stroke flashover protector of 10kV tape insulation according to claim 4, it is characterised in that: form the second level discharging gap of 7mm between described ball discharge (2.7).
7. the two-stage series connection gap lightning stroke flashover protector of 10kV tape insulation according to claim 1 and 2, it is characterised in that: the low-pressure end of described Zinc-Oxide Arrester (2) is provided with the 3rd connection screw rod (2.6).
8. the two-stage series connection gap lightning stroke flashover protector of a kind of 10kV tape insulation according to claim 1, it is characterised in that: described Zinc-Oxide Arrester (2) adopts the Zinc-Oxide Arrester with external series gap for preventing lightning surge with block power frequency continued flow of the regulation meeting DL/T815-2002 " transmission line of alternation current polymeric metal oxide surge arrester " and GB11032-2000 " alternating current gapless metal oxide arrester " two standards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620021087.5U CN205376222U (en) | 2016-01-11 | 2016-01-11 | Two -stage series gap thunderbolt flashover protector of 10kV tape insulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620021087.5U CN205376222U (en) | 2016-01-11 | 2016-01-11 | Two -stage series gap thunderbolt flashover protector of 10kV tape insulation |
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| CN205376222U true CN205376222U (en) | 2016-07-06 |
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| CN201620021087.5U Active CN205376222U (en) | 2016-01-11 | 2016-01-11 | Two -stage series gap thunderbolt flashover protector of 10kV tape insulation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205899A (en) * | 2016-07-15 | 2016-12-07 | 江苏远航电缆附件有限公司 | A kind of band gap compound needle type insulator |
| CN108400524A (en) * | 2018-05-10 | 2018-08-14 | 特瑞格（天津）科技有限公司 | A kind of plural serial stage multi-chamber lightning protection device for 220kV high voltage transmission lines |
| CN109378144A (en) * | 2018-10-19 | 2019-02-22 | 广州中光电气科技有限公司 | A kind of combinational gap device and preparation method thereof changing gapless arrestyer protection mechanism |
| CN111627622A (en) * | 2020-06-05 | 2020-09-04 | 江西百新电瓷电气有限公司 | 10KV automatic-adjustment lightning-protection ice porcelain insulator with pressure-sensitive device and manufacturing method thereof |
-
2016
- 2016-01-11 CN CN201620021087.5U patent/CN205376222U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205899A (en) * | 2016-07-15 | 2016-12-07 | 江苏远航电缆附件有限公司 | A kind of band gap compound needle type insulator |
| CN106205899B (en) * | 2016-07-15 | 2017-07-28 | 江苏远航电缆附件有限公司 | A kind of band gap compound needle type insulator |
| CN108400524A (en) * | 2018-05-10 | 2018-08-14 | 特瑞格（天津）科技有限公司 | A kind of plural serial stage multi-chamber lightning protection device for 220kV high voltage transmission lines |
| CN109378144A (en) * | 2018-10-19 | 2019-02-22 | 广州中光电气科技有限公司 | A kind of combinational gap device and preparation method thereof changing gapless arrestyer protection mechanism |
| CN111627622A (en) * | 2020-06-05 | 2020-09-04 | 江西百新电瓷电气有限公司 | 10KV automatic-adjustment lightning-protection ice porcelain insulator with pressure-sensitive device and manufacturing method thereof |
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