CN210349489U - Multiple series gap lightning stroke flashover protector - Google Patents
Multiple series gap lightning stroke flashover protector Download PDFInfo
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- CN210349489U CN210349489U CN201921178275.9U CN201921178275U CN210349489U CN 210349489 U CN210349489 U CN 210349489U CN 201921178275 U CN201921178275 U CN 201921178275U CN 210349489 U CN210349489 U CN 210349489U
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Abstract
The utility model discloses a multiple series gap thunderbolt flashover protector, include: the lightning arrester comprises an arc striking device and a lightning arrester body, wherein the lightning arrester body comprises a metal oxide inner core, an insulating layer, a discharge head and a discharge rod; the metal oxide inner core is provided with a cavity, and the cavity divides the metal oxide inner core into a first connecting section and a second connecting section; one end of the discharge head penetrates through the insulating layer to be connected with the first connecting section, and the other end of the discharge head is arranged outside the insulating layer; one end of the discharge rod penetrates through the insulating layer to be connected with the second connecting section, and the other end of the discharge rod is arranged outside the insulating layer and bent towards the direction close to the discharge head; a first discharge channel is formed between the arc striking device and the conducting wire, and a second discharge channel is formed between the discharge head and the discharge rod, so that tripping of an electric power system caused by lightning stroke can be avoided, and the power supply quality is improved.
Description
Technical Field
The utility model relates to a lightning-arrest technique, concretely relates to multiple series gap thunderbolt flashover protector.
Background
In recent years, with the large-scale urban and rural power grid transformation of power systems in China, the statistical number of lightning trip, disconnection and insulator flashover accidents of power transmission and distribution lines is on an increasing trend. Meanwhile, lightning stroke accidents of overhead conductors at home and abroad also frequently occur, so that personal injuries and deaths and huge economic losses are caused. Lightning trip-out, disconnection and insulator flashover accidents have seriously threatened the safe operation of power transmission and distribution lines.
The lightning protection measures adopted at present comprise an installation overhead ground wire, a puncture arc protection hardware fitting, a lightning protection post insulator, a zinc oxide lightning arrester and the like, but according to feedback of field practice, the lightning protection measures all have the problem of poor protection, and lightning stroke flashover cannot be effectively avoided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide a multiple series gap thunderbolt flashover protector, solve among the prior art lightning protection measure protection poor technical problem.
In order to achieve the technical purpose, the technical scheme of the utility model provide a multiple series gap thunderbolt flashover protector, include: the lightning arrester comprises an arc striking device and a lightning arrester body, wherein the lightning arrester body comprises a metal oxide inner core, an insulating layer, a discharge head and a discharge rod, and the insulating layer is coated on the peripheral surface of the metal oxide inner core; the metal oxide inner core is provided with a cavity, and the cavity divides the metal oxide inner core into a first connecting section and a second connecting section; one end of the discharge head penetrates through the insulating layer to be connected with the first connecting section, and the other end of the discharge head is arranged outside the insulating layer; one end of the discharge rod penetrates through the insulating layer to be connected with the second connecting section, and the other end of the discharge rod is arranged outside the insulating layer and bent towards the direction close to the discharge head; the arc striking device is connected to one end of the metal oxide inner core.
Compared with the prior art, the beneficial effects of the utility model include: in the multiple series gap lightning flashover protector, the arc striking device is arranged right below the wire, a discharge gap is formed between the wire and the arc striking device, one end of the lightning arrester body, which is far away from the arc striking device, is grounded, the lightning arrester body does not bear system voltage and operation overvoltage when a power grid normally operates, maintenance cost is reduced, reliability is enhanced, and service life is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the multiple series gap lightning flashover protector provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the present embodiment provides a multiple series gap lightning flashover protector, including: the lightning arrester comprises an arc striking device 1 and an arrester body 2, wherein in the embodiment, the arrester body 2 is vertically arranged, and the arc striking device 1 is connected to the upper end of the arrester body 2.
The lightning arrester body 2 comprises a metal oxide inner core 21, an insulating layer 22, a discharge head 23 and a discharge rod 24, wherein the insulating layer 22 is coated on the peripheral surface of the metal oxide inner core 21 and isolates the peripheral surface of the metal oxide inner core 21 from outside air.
In this embodiment, the metal oxide inner core 21 is made of zinc oxide, a cavity 21a is formed in the metal oxide inner core 21, the cavity 21a divides the metal oxide inner core 21 into a first connection section and a second connection section, in this embodiment, the second connection section is located above the first connection section, and the cavity 21a is used for blocking part of current from flowing from the lower end of the second connection section to the upper end of the first connection section.
The one end of discharge head 23 is passed insulating layer 22 with first linkage segment is connected discharge head 23's the other end set up in the insulating layer is outside, discharge head 23 can with first linkage segment fixed connection, discharge head 23 also can with first linkage segment rotates to be connected, and is specific, discharge head 23 is close to the one end of first linkage segment is provided with the external screw thread, be provided with first screw hole on the lateral wall of first linkage segment, discharge head 23 with first screw hole screw thread fixed connection.
One end of the discharge rod 24 penetrates through the insulating layer 22 to be connected with the second connecting section, the other end of the discharge rod 24 is arranged outside the insulating layer 22 and is bent towards the direction close to the discharge head 23, an external thread is arranged at one end of the discharge rod 24 close to the second connecting section, a second threaded hole is formed in the peripheral surface of the second connecting section, and the discharge rod 24 is fixedly connected with the second threaded hole.
The arc striking device 1 is connected to the upper end of the metal oxide inner core 21 and is used for bearing power frequency arc.
In the multiple series gap lightning flashover protector, the arc striking device 1 is arranged right below a wire, a discharge gap is formed between the wire and the arc striking device 1, one end of the lightning arrester body 2, which is far away from the arc striking device 1, is grounded, the lightning arrester body 2 does not bear system voltage and operation overvoltage when a power grid normally operates, maintenance cost is reduced, reliability is enhanced, and service life is prolonged.
The present embodiment provides a preferable implementation manner, and the arrester body 2 further includes an insulating block 25, and the insulating block 25 is disposed in the cavity 21a, so as to avoid the high-voltage current from breaking through the cavity 21 a.
The embodiment provides a preferable implementation manner, the arc striking device 1 includes a first metal rod 11 and an arc-shaped metal plate 12, a lower end of the first metal rod 11 is coaxially and fixedly connected with an upper end of the metal oxide inner core 21, an upper end of the first metal rod 11 is fixedly connected with the arc-shaped metal plate 12, specifically, the first metal rod 11 is a stud, a lower end of the first metal rod 11 is fixedly connected with a third threaded hole formed in an upper end of the metal oxide inner core 21, an upper end of the first metal rod 11 is fixedly connected with a threaded sleeve 12a welded and fixed to a lower end of the arc-shaped metal plate 12, so as to disassemble and replace the burnt arc-shaped metal plate 12, a surface of the arc-shaped metal plate 12, which deviates from the metal oxide inner core 21, is a concave arc surface, the concave arc surface of the arc-shaped metal plate is located right below a lead, and the distance between the arc-shaped metal plate 12 and the lead is 18-20 mm.
In this embodiment, the distance between the discharge head 23 and the closest point of the discharge rod 24 is 13 mm.
Specifically, the multiple series gap lightning flashover protector further comprises a second metal rod 3 and a locking nut 3a, wherein the second metal rod 3 is coaxially and fixedly connected with the lower end of the metal oxide inner core 21; the outer peripheral surface of the second metal rod 3 is provided with an external thread; the number of the locking nuts 3a is at least two, the two locking nuts 3a are in threaded connection with the second metal rod 3, and the second metal rod 3 can be fixed to the free end of angle steel arranged on the telegraph pole.
The working principle is as follows: in the multiple series gap lightning flashover protector, the arc striking device 1 is arranged right below a wire, a discharge gap is formed between the wire and the arc striking device 1, one end of the lightning arrester body 2, which is far away from the arc striking device 1, is grounded, the lightning arrester body 2 does not bear system voltage and operation overvoltage when a power grid normally operates, maintenance cost is reduced, reliability is enhanced, and service life is prolonged.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (4)
1. A multiple series gap lightning flashover protector, comprising: the lightning arrester comprises an arc striking device and a lightning arrester body, wherein the lightning arrester body comprises a metal oxide inner core, an insulating layer, a discharge head and a discharge rod, and the insulating layer is coated on the peripheral surface of the metal oxide inner core; the metal oxide inner core is provided with a cavity, and the cavity divides the metal oxide inner core into a first connecting section and a second connecting section; one end of the discharge head penetrates through the insulating layer to be connected with the first connecting section, and the other end of the discharge head is arranged outside the insulating layer; one end of the discharge rod penetrates through the insulating layer to be connected with the second connecting section, and the other end of the discharge rod is arranged outside the insulating layer and bent towards the direction close to the discharge head; the arc striking device is connected to one end of the metal oxide inner core.
2. The multiple series gap lightning strike flashover protector of claim 1, wherein the lightning arrester body further comprises an insulating block disposed within the cavity.
3. The multiple series gap lightning flashover protector of claim 1, wherein the arc ignition device comprises a first metal rod and an arc-shaped metal plate, one end of the first metal rod is coaxially and fixedly connected with one end of the metal oxide inner core, the other end of the first metal rod is fixedly connected with the arc-shaped metal plate, and one surface of the arc-shaped metal plate, which is away from the metal oxide inner core, is a concave arc surface.
4. The multiple series gap lightning flashover protector of claim 3, further comprising a second metal rod and a locking nut, wherein the second metal rod is coaxially and fixedly connected with one end of the metal oxide inner core away from the first metal rod; the outer peripheral surface of the second metal rod is provided with an external thread; the number of the locking nuts is at least two, and the two locking nuts are in threaded connection with the second metal rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921178275.9U CN210349489U (en) | 2019-07-24 | 2019-07-24 | Multiple series gap lightning stroke flashover protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921178275.9U CN210349489U (en) | 2019-07-24 | 2019-07-24 | Multiple series gap lightning stroke flashover protector |
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| Publication Number | Publication Date |
|---|---|
| CN210349489U true CN210349489U (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921178275.9U Active CN210349489U (en) | 2019-07-24 | 2019-07-24 | Multiple series gap lightning stroke flashover protector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111739702A (en) * | 2020-05-11 | 2020-10-02 | 国网浙江江山市供电有限公司 | Lightning protection flashover protector |
| CN114141549A (en) * | 2021-11-26 | 2022-03-04 | 广东电网有限责任公司 | High-voltage discharge device |
-
2019
- 2019-07-24 CN CN201921178275.9U patent/CN210349489U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111739702A (en) * | 2020-05-11 | 2020-10-02 | 国网浙江江山市供电有限公司 | Lightning protection flashover protector |
| CN114141549A (en) * | 2021-11-26 | 2022-03-04 | 广东电网有限责任公司 | High-voltage discharge device |
| CN114141549B (en) * | 2021-11-26 | 2024-02-27 | 广东电网有限责任公司 | High-voltage discharge device |
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