CN101174497A - Lightning protection supporting insulator and insulated cable used with it - Google Patents
Lightning protection supporting insulator and insulated cable used with it Download PDFInfo
- Publication number
- CN101174497A CN101174497A CNA2006101179419A CN200610117941A CN101174497A CN 101174497 A CN101174497 A CN 101174497A CN A2006101179419 A CNA2006101179419 A CN A2006101179419A CN 200610117941 A CN200610117941 A CN 200610117941A CN 101174497 A CN101174497 A CN 101174497A
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- insulated cable
- insulator
- upper flange
- insulated
- cable
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Abstract
The invention relates to a lightning-proof post insulator and a matching insulated cable, wherein, the lightning-proof post insulator comprises an insulator body, an upper flange, a lower flange, a discharge ring, a run-on tab, a built-in clip and an insulating boot. The invention is characterized in that the built-in clip is arranged at the top of the upper flange via a bolt with a pressure spring, enabling the insulated cable to be tightly pressed between the bottom of the built-in clip and the upper flange, and arranged on the discharge ring via the insulating boot from a top boot; part of the insulated cable arranged on the post insulator is bare, two insulated adhesive tapes are arranged at two ends of the bare cable and an aluminum armor tape is arranged in the middle. The invention has the advantages that part of the insulated cable close to the insulator is bared according to lightening breaking mechanism to the insulated cable; an arc root of a power frequency electric arc is transferred or fixed between the electric arc and the run-on tab via the discharge ring on the upper flange and the run-on tab on the lower flange of the lightning-proof post insulator; the electric arc energy of lightening short circuit is transferred away from the cable in a short time, thereby preventing the insulated cable from being damaged by lightening and ensuring safe operation of overhead insulated distribution network.
Description
Technical field
The present invention relates to a kind of post insulator that is used for overhead distribution, especially relate to a kind of lightning protection pillar insulator and be mated the insulated cable of use.
Background technology
Cause the overhead distribution fault in order to reduce external causes such as trees, birds, accumulated snow, improve power supply reliability, the insulating rate of China's big city 10kV overhead distribution is quite high, and the insulating of 10kV overhead distribution has become development trend.
Insulated conductor has solved corridor that plain conductor can't resolve and safety problem, compares with cable, reduced investment, builds soon, and advantage is fairly obvious.But problem such as open type connected mode has not only influenced the rack security of operation and has seriously hindered the popularization of 10kV overhead distribution insulating work between lightning-caused breaking, cable and overhead wire.
The thunderbolt resistance characteristics of insulated conductor has been compared obviously different with plain conductor.When direct lightning strike or lightning induced voltage acted on plain conductor and cause insulator arc-over, lasting power frequency short circuit current electric arc moved to deviating from the power supply direction along lead under electrodynamic effect, can the serious burn lead.Insulated conductor is then different.As shown in Figure 1, existing insulated conductor 1 ' is installed on the post insulator (model is PS-15), and this post insulator comprises insulator body 8 ' and is installed in the lower flange 7 ' of its underpart.Lightning overvoltage at first punctures wire insulation and then causes insulator arc-over, breakdown insulating barrier is a pin hole shape, the power frequency short circuit current electric arc that continues is subjected to the anti-coagulating action that insulate on every side, the arc root can only burn at the pin hole place, will be at extremely short time inside conductor by neat blowing, the thunderbolt loss of power accident takes place, thereby the safe operation of power distribution network in serious threat.
Therefore, the problem of insulated conductor lightning-caused breaking must be properly settled, the safety of overhead insulating power distribution network could be guaranteed.
Summary of the invention
The object of the present invention is to provide a kind ofly provides the most basic post insulator that prevents lightning-caused breaking and is mated the insulated cable of use for the 10kV suspended insulated guide wire, thereby promote and optimize the insulation of 10kV overhead transmission line, improve the reliability and the fail safe of power supply.
A kind of lightning protection pillar insulator provided by the present invention, comprise insulator body and be fixedly connected on the upper and lower flange at these insulator body two ends respectively, be characterized in: it also comprises discharge ring, run-on tab, clamped binding clip and insulating cover, and wherein: described discharge ring is nested on the described upper flange; Described run-on tab is fixed on the bottom of lower flange; The bolts assemblies of described clamped binding clip by stage clip is housed is pressed between the bottom and upper flange of this clamped binding clip described insulated cable at the top of upper flange, and by described insulating cover from its main header casing to described discharge ring.
The insulated cable that the present invention also provides a kind of and above-mentioned post insulator to be used is characterized in: this insulated cable is a bare wire in the part that is positioned at described post insulator place, and at the two ends of this bare wire coated insulation adhesive tape, the middle aluminium armor tape that coats.
Adopted above-mentioned technical solution; that is: one side is according to the mechanism of insulated conductor lightning-caused breaking; with near the local bare wireization of the insulated conductor the insulator; on the other hand by run-on tab fixing on discharge ring on the lightning protection pillar insulator upper flange and the lower flange; power frequency arc arc root is shifted or be fixed on and discharge between ring and the run-on tab; thunderbolt short circuiting arc energy was shifted from lead in the extremely short time; thereby the protection insulated cable is avoided the thunderbolt injury, guarantees the safe operation of overhead insulating power distribution network.
Description of drawings
By following to lightning protection pillar insulator of the present invention and the embodiment of insulated cable that is mated use in conjunction with the description of its accompanying drawing, can further understand purpose of the present invention, specific structural features and advantage.Wherein, accompanying drawing is:
Fig. 1 is the structural representation of existing post insulator (model is PS-15);
Fig. 2 is the stereochemical structure exploded view of lightning protection pillar insulator of the present invention.
Embodiment
As shown in Figure 2, the present invention, promptly lightning protection pillar insulator comprises insulator body 8, upper flange 5, lower flange 7, discharge ring 2, run-on tab 6, clamped binding clip 4 and insulating cover 3.Mucilage binding is in upper flange 5, lower flange 7 respectively at the two ends of insulator body 8, and discharge ring 2 is nested on the upper flange 5.
Clamped binding clip 4 is a kind of universal products, is assemblied in the top of upper flange 5 by the bolt 41 that stage clip is housed.
Run-on tab 6 places lower flange 7 bottoms.
When installing at the scene, with near the local bare wireization of insulated cable 1 insulator body 8, and at bare wire end bag insulating tape, middle wrapping aluminium armor tape, by clamped binding clip 4 insulated cable 1 is pressed between clamped binding clip 4 and the upper flange 5, guarantee that contact is good, put insulating cover 3 at last.
Operation principle of the present invention:
When electrical network normally in service, the exposed live metal of 3 pairs of insulated cables 1 of insulating cover has partly carried out insulating protection, has prevented the infringement of foreign matter to electrical network.When being struck by lightning; because near insulated cable 1 part the insulator of the present invention is by bare wireization; power frequency arc arc root is transferred on the special discharge ring 4 at an easy rate; and at the starting arc between ring 4 and the run-on tab 6 that discharges; thunderbolt short circuiting arc energy was shifted from lead in the extremely short time, thereby guardwire avoids burn.
Need to prove: above only unrestricted technical scheme of the present invention in order to explanation, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention, and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Figure of description
Claims (2)
1. lightning protection pillar insulator, comprise insulator body (8) and be fixedly connected on the upper and lower flange (5,7) at this insulator body (8) two ends respectively, it is characterized in that: it also comprises discharge ring (2), run-on tab (6), clamped binding clip (4) and insulating cover (3), wherein:
Described discharge ring (2) is nested on the described upper flange (5);
Described run-on tab (6) is fixed on the bottom of lower flange (7);
Described clamped binding clip (4) is assemblied in the top of upper flange (5) by the bolt (41) that stage clip is housed, described insulated cable (1) is pressed between the bottom and upper flange (5) of this clamped binding clip (4), and by described insulating cover (3) from its main header casing to described discharge ring (2).
2. insulated cable that is used with the described post insulator of claim 1, it is characterized in that: this insulated cable (1) is a bare wire in the part that is positioned at described post insulator place, and at the two ends of this bare wire coated insulation adhesive tape, the middle aluminium armor tape that coats.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101179419A CN101174497A (en) | 2006-11-03 | 2006-11-03 | Lightning protection supporting insulator and insulated cable used with it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101179419A CN101174497A (en) | 2006-11-03 | 2006-11-03 | Lightning protection supporting insulator and insulated cable used with it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101174497A true CN101174497A (en) | 2008-05-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101179419A Pending CN101174497A (en) | 2006-11-03 | 2006-11-03 | Lightning protection supporting insulator and insulated cable used with it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101174497A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243912A (en) * | 2010-05-13 | 2011-11-16 | 苏州爱建电瓷有限公司 | Overvoltage relief device of insulator |
| CN102592756A (en) * | 2012-03-30 | 2012-07-18 | 上海市电力公司 | Lightningproof composite post insulator |
| CN104464984A (en) * | 2014-12-02 | 2015-03-25 | 国家电网公司 | Anti-thunder insulator |
| CN105825980A (en) * | 2016-04-28 | 2016-08-03 | 长葛市恒瑞电瓷电器有限公司 | Lightning proof insulator |
| WO2018193419A1 (en) * | 2017-04-21 | 2018-10-25 | Oxford Instruments X-ray Technology Inc. | Anode stack |
| CN109360698A (en) * | 2018-11-07 | 2019-02-19 | 南宁超伏电气科技有限公司 | A kind of arc-control device that nested can be mounted on insulator chain |
-
2006
- 2006-11-03 CN CNA2006101179419A patent/CN101174497A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102243912A (en) * | 2010-05-13 | 2011-11-16 | 苏州爱建电瓷有限公司 | Overvoltage relief device of insulator |
| CN102243912B (en) * | 2010-05-13 | 2013-05-08 | 苏州爱建电瓷有限公司 | Overvoltage relief device of insulator |
| CN102592756A (en) * | 2012-03-30 | 2012-07-18 | 上海市电力公司 | Lightningproof composite post insulator |
| CN104464984A (en) * | 2014-12-02 | 2015-03-25 | 国家电网公司 | Anti-thunder insulator |
| CN105825980A (en) * | 2016-04-28 | 2016-08-03 | 长葛市恒瑞电瓷电器有限公司 | Lightning proof insulator |
| WO2018193419A1 (en) * | 2017-04-21 | 2018-10-25 | Oxford Instruments X-ray Technology Inc. | Anode stack |
| CN109360698A (en) * | 2018-11-07 | 2019-02-19 | 南宁超伏电气科技有限公司 | A kind of arc-control device that nested can be mounted on insulator chain |
| CN109360698B (en) * | 2018-11-07 | 2023-10-03 | 南宁超伏电气科技有限公司 | Arc extinguishing device capable of being installed on insulator string in nested mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080507 |