CN204270764U - A kind of self-melt lightning arrester - Google Patents
A kind of self-melt lightning arrester Download PDFInfo
- Publication number
- CN204270764U CN204270764U CN201420720496.5U CN201420720496U CN204270764U CN 204270764 U CN204270764 U CN 204270764U CN 201420720496 U CN201420720496 U CN 201420720496U CN 204270764 U CN204270764 U CN 204270764U
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- CN
- China
- Prior art keywords
- housing
- zinc oxide
- oxide film
- snap ring
- lightning arrester
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Thermistors And Varistors (AREA)
Abstract
The utility model discloses a kind of self-melt lightning arrester, 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.The utility model has the advantages that: the snap ring adopting fusible alloy, 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.
Description
Technical field
The utility model 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.
Utility model content
For solving the problems of the technologies described above, the purpose of this utility model is to provide a kind of lightning arrester adopting fusible alloy technology, and 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.
The utility model has the advantages that: the snap ring adopting fusible alloy, 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 utility model;
Fig. 2 is part A enlarged diagram in Fig. 1.
Embodiment
The utility model is illustrated below in conjunction with accompanying drawing, as shown in Figure 1 and Figure 2, the utility model comprises 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 (1)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420720496.5U CN204270764U (en) | 2014-11-25 | 2014-11-25 | A kind of self-melt lightning arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420720496.5U CN204270764U (en) | 2014-11-25 | 2014-11-25 | A kind of self-melt lightning arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204270764U true CN204270764U (en) | 2015-04-15 |
Family
ID=52805617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420720496.5U Expired - Fee Related CN204270764U (en) | 2014-11-25 | 2014-11-25 | A kind of self-melt lightning arrester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204270764U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332259A (en) * | 2014-11-25 | 2015-02-04 | 辽宁华隆电力科技有限公司 | Self-melting lightning arrester |
-
2014
- 2014-11-25 CN CN201420720496.5U patent/CN204270764U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332259A (en) * | 2014-11-25 | 2015-02-04 | 辽宁华隆电力科技有限公司 | Self-melting lightning arrester |
| CN104332259B (en) * | 2014-11-25 | 2017-10-20 | 辽宁华隆电力科技股份有限公司 | A kind of self-melt arrester |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 Termination date: 20171125 |