CN104332259A - Self-melting lightning arrester - Google Patents
Self-melting lightning arrester Download PDFInfo
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- CN104332259A CN104332259A CN201410691591.1A CN201410691591A CN104332259A CN 104332259 A CN104332259 A CN 104332259A CN 201410691591 A CN201410691591 A CN 201410691591A CN 104332259 A CN104332259 A CN 104332259A
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- zinc oxide
- lightning arrester
- shell
- melting
- housing
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Abstract
The invention discloses a self-melting lightning arrester. The self-melting lightning arrester comprises a shell which is externally coated with an insulating jacket, wherein a zinc oxide layer is arranged in the shell and is fixed in the shell through a drawing bar, the upper end of the zinc oxide layer is electrically connected with upper-end joints, and the lower end of the zinc oxide layer is electrically connected with a lower-end joint; a spring is arranged in the shell at the upper end of the drawing bar, a concave ring is arranged at an inner cycle of the lower end of the shell, a low-melting-point alloy clamping ring is arranged in the concave ring, and the zinc oxide layer is fixed in the shell through the low-melting-point alloy clamping ring. The self-melting lightning arrester has the advantages that by virtue of the easily-molten alloy clamping ring, relatively high current runs through the zinc oxide arrester during high-voltage impact, the easily-molten alloy clamping ring is heated to be molten, and the drawing bar and the like in the shell of the lightning arrester are not supported and naturally fall, so that a permanent grounding accident is avoided.
Description
Technical field
The present invention relates to lightning arrester, is a kind of hot melt lightning arrester specifically.
Background technology
Overvoltage protection in electric power system requires more and more higher, because of lightning arrester quality and defencive function poor, often there is the accident of power outage and damage power transmission and transforming equipment in electric power system; Because damaging and the dismounting that will have a power failure appears in lightning arrester regular maintenance and lightning arrester, cause many losses; Most lightning arrester do not have release unit or release unit inoperative, the power-off fault loss therefore caused is also a lot.So how lightning arrester when strong lightning current, switching overvoltage electric current or can not affect the normal power supply of supply line when self damages, it is the problem that a lot of experts and scholars and lightning arrester producer drop into that substantial contribution and time goes to study.
At present, at home and abroad lightning arrester all devises a kind of release unit, to be located in lightning arrester or to connect with lightning arrester to use, and solves the problem that lightning arrester sets off an explosion because not departing from electric power system or electric power system permanent earth occurs.Wherein the function of release unit should meet when lightning arrester is by normal lightning current or switching overvoltage electric current, and release unit does not answer action; And when lightning arrester is aging die of old age or damage because of certain factor generation internal flashover time, should want can action message, in case comminuted blast occurs lightning arrester or cause the accident of electric power system permanent earth to occur.Release unit is of a great variety, total be divided into heat explosion type, fuse wire type and hot melten type three major types, each have their own pluses and minuses of these devices.Chinese Patent Application No. 03111237.4 discloses a kind of hanging anti-theft lightning arresters, and the drawback of this patent is that its release unit adopts mechanical operation, easily produces permanent earth accident.
Summary of the invention
For solving the problems of the technologies described above, the object of this invention is to provide a kind of lightning arrester adopting fusible alloy technology, concrete technical scheme is as follows:
A kind of self-melt lightning arrester, comprises housing, described hull outside coated insulation overcoat, in described housing, zinc oxide film is set, described zinc oxide film is fixed in housing by leading-drawing rod, and described zinc oxide film upper end is electrically connected with upper end connector, and described zinc oxide film lower end is electrically connected with lower end connector; Arrange spring in the upper end housing of described leading-drawing rod, described housing lower end inner circle arranges scrobicular ring, arranges acolite snap ring in described scrobicular ring, and zinc oxide film is fixed in housing by described acolite snap ring.
Described acolite snap ring material is bismuth tin acolite, and its melting temperature is 150 DEG C.
Advantage of the present invention is: the snap ring adopting fusible alloy, and when being subject to impacting with high pressure, zinc oxide arrester has larger electric current to pass through, fusible alloy snap ring is exothermic melting, leading-drawing rods in lightning arrester housing etc. do not support, and naturally fall, prevent the generation of permanent earth accident.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is part A enlarged diagram in Fig. 1.
Embodiment
The present invention is illustrated below in conjunction with accompanying drawing, as shown in Figure 1 and Figure 2, the present invention includes housing 5, coated insulation overcoat 6 outside described housing 5, in described housing 5, zinc oxide film 4 is set, described zinc oxide film 4 is fixed in housing 5 by leading-drawing rod 8, and described zinc oxide film 4 upper end is electrically connected with upper end connector 1, and described zinc oxide film 4 lower end is electrically connected with lower end connector 2; Arrange spring 3 in the upper end housing 5 of described leading-drawing rod 8, described housing 5 lower end inner circle arranges scrobicular ring 51, and arrange acolite snap ring 7 in described scrobicular ring 51, zinc oxide film 4 is fixed in housing 5 by described acolite snap ring 7.
Described acolite snap ring 7 material is bismuth tin acolite, and its melting temperature is 150 DEG C.
Claims (2)
1. a self-melt lightning arrester, it is characterized in that: comprise housing, described hull outside coated insulation overcoat, in described housing, zinc oxide film is set, described zinc oxide film is fixed in housing by leading-drawing rod, described zinc oxide film upper end is electrically connected with upper end connector, and described zinc oxide film lower end is electrically connected with lower end connector; Arrange spring in the upper end housing of described leading-drawing rod, described housing lower end inner circle arranges scrobicular ring, arranges acolite snap ring in described scrobicular ring, and zinc oxide film is fixed in housing by described acolite snap ring.
2. self-melt lightning arrester according to claim 1, is characterized in that: described acolite snap ring material is bismuth tin acolite, and its melting temperature is 150 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410691591.1A CN104332259B (en) | 2014-11-25 | 2014-11-25 | A kind of self-melt arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410691591.1A CN104332259B (en) | 2014-11-25 | 2014-11-25 | A kind of self-melt arrester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104332259A true CN104332259A (en) | 2015-02-04 |
| CN104332259B CN104332259B (en) | 2017-10-20 |
Family
ID=52406971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410691591.1A Active CN104332259B (en) | 2014-11-25 | 2014-11-25 | A kind of self-melt arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104332259B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4015228A (en) * | 1974-06-10 | 1977-03-29 | Matsushita Electric Industrial Co., Ltd. | Surge absorber |
| CN101521065A (en) * | 2008-02-29 | 2009-09-02 | 深圳市富诚高压电气有限公司 | Explosion-proof automatic-separation type lightning arrester |
| CN204270764U (en) * | 2014-11-25 | 2015-04-15 | 辽宁华隆电力科技股份有限公司 | A kind of self-melt lightning arrester |
-
2014
- 2014-11-25 CN CN201410691591.1A patent/CN104332259B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4015228A (en) * | 1974-06-10 | 1977-03-29 | Matsushita Electric Industrial Co., Ltd. | Surge absorber |
| CN101521065A (en) * | 2008-02-29 | 2009-09-02 | 深圳市富诚高压电气有限公司 | Explosion-proof automatic-separation type lightning arrester |
| CN204270764U (en) * | 2014-11-25 | 2015-04-15 | 辽宁华隆电力科技股份有限公司 | A kind of self-melt lightning arrester |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104332259B (en) | 2017-10-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 118008 Dandong province Zhenxing District, Liaoning Road, No. 277 Applicant after: LIAONING HUALONG ELECTRIC TECHNOLOGY INCORPORATED COMPANY Address before: 118008 Dandong province Zhenxing District, Liaoning Road, No. 277 Applicant before: LIAONING HUALONG ELECTRIC POWER TECHNOLOGY CO., LTD. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |