CN2569300Y - Over heat protective zinc oxide valve sheet - Google Patents
Over heat protective zinc oxide valve sheet Download PDFInfo
- Publication number
- CN2569300Y CN2569300Y CN 02279135 CN02279135U CN2569300Y CN 2569300 Y CN2569300 Y CN 2569300Y CN 02279135 CN02279135 CN 02279135 CN 02279135 U CN02279135 U CN 02279135U CN 2569300 Y CN2569300 Y CN 2569300Y
- Authority
- CN
- China
- Prior art keywords
- metal pin
- zinc oxide
- electrode
- valve sheet
- oxide valve
- 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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Abstract
The utility model relates to an overheat protective zinc oxide valve sheet which comprises a valve sheet body (1) and ordinary metal tube pins (2) connected with an electrode, wherein one electrode of the valve sheet body (1) is connected with one or two ordinary metal tube pins (2), and the other electrode is connected with a metal tube pin (3) with a low melting point, or a mixture metal tube pin. The utility model has the advantages of self overheat protection, long service life, reliable performance, etc.
Description
Technical field
The utility model relates to the lightning arrester field of overvoltage protection, particularly a kind of overtemperature protection zinc oxide valve plate.
Background technology
At present, for fear of the harm of various overvoltage to electric equipment, generally adopt zinc oxide valve plate to absorb overvoltage, the protection electric equipment normally moves.But because this valve block is when aged deterioration, the valve block pyrophoricity accident that catches fire appears in heating up easily, causes protective device and protected device damage, even causes a serious accident.As adopt the overcurrent protection of conventional protective tube or fuse as valve block; then since the protective tube that will select bigger blowout current for use to satisfy the requirement of flowing through the valve block impulse current; so protective tube can not fuse under the less power current before valve block damages scaling loss, can not play a protective role.As adopt overheat switch or overcurrent protection switch, or other safeguard measure, as the overcurrent protection of valve block, then can cause complex structure, cost height, poor reliability.
Summary of the invention
Technical problem to be solved in the utility model is: the overtemperature protection zinc oxide valve plate that a kind of long service life is provided; it can be by absorbing various superpotential energy; guarantee that electric equipment normally moves; can utilize the bulk temperature rising heat to act directly on the low-melting-point metal pin again; before temperature further raises the generation burning, excise current circuit, thereby thoroughly solved the burning difficult problem of existing zinc oxide valve plate.
The technical scheme that its technical problem that solves the utility model adopts is: comprise the common metal pin that the valve block body is connected with electrode with it, wherein, an electrode of valve block body is connected with one or two common metal pins, and another electrode is connected with a low-melting-point metal pin or hybrid metal pin.
The utlity model has following advantage:
One. be skillfully constructed, have self-overheat protective function, can avoid self pyrophoricity accident occurring.
They are two years old. dependable performance, can guarantee that electric equipment normally moves.
They are three years old. long service life.
They are four years old. and simple in structure, be convenient to make and use.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with embodiment and accompanying drawing.
Structure of the present utility model is as shown in the figure: comprise the common metal pin two that valve block body 1 is connected with electrode with it.Wherein, an electrode of valve block body 1 is connected with one or two common metal pin twos, and another electrode of valve block body 1 is connected with a low-melting-point metal pin 3 or hybrid metal pin.
Above-mentioned hybrid metal pin is made of upper and lower two joints, and last joint is the common metal pin two, and following joint is a low-melting-point metal pin 3, the two company of weldering.When being provided with two common metal pin twos, the both sides of their separation low-melting-point metal pins 3.The common metal pin two works to support valve block body 1.3 superheat protecting functions of low-melting-point metal pin, its fusion temperature is 120～180 ℃.
Operation principle of the present utility model is: under normal running (operation) conditions, the leakage current of valve block body 1 is less than tens of microampere, the temperature of its body＜120 ℃, and pin can not melt.When valve block body 1 aged deterioration, leakage current strengthens, and elevates the temperature, and its temperature rising heat is directly delivered on the metal pin.When temperature 〉=120 ℃, low-melting-point metal pin 3 wherein will melt disconnection, cuts off current circuit, avoids temperature further to raise and pyrophoricity accident occurs.
Claims (4)
1. overtemperature protection zinc oxide valve plate; comprise the common metal pin (2) that valve block body (1) is connected with electrode with it; an electrode that it is characterized in that valve block body (1) is connected with one or two common metal pins (2), and another electrode is connected with a low-melting-point metal pin (3) or hybrid metal pin.
2. overtemperature protection zinc oxide valve plate according to claim 1 is characterized in that the hybrid metal pin is made of upper and lower two joints, and last joint is common metal pin (2), and following joint is low-melting-point metal pin (3), the two company of weldering.
3. overtemperature protection zinc oxide valve plate according to claim 1 is characterized in that two common metal pins (2), the both sides of separation low-melting-point metal pin (3).
4. according to claim 1 or 2 or 3 described overtemperature protection zinc oxide valve plates, the fusion temperature that it is characterized in that low-melting-point metal pin (3) is 120～180 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02279135 CN2569300Y (en) | 2002-09-12 | 2002-09-12 | Over heat protective zinc oxide valve sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02279135 CN2569300Y (en) | 2002-09-12 | 2002-09-12 | Over heat protective zinc oxide valve sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2569300Y true CN2569300Y (en) | 2003-08-27 |
Family
ID=33742287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02279135 Expired - Fee Related CN2569300Y (en) | 2002-09-12 | 2002-09-12 | Over heat protective zinc oxide valve sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2569300Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101034799B (en) * | 2006-02-06 | 2010-10-06 | 陶明 | Semiconductor device overtemperature protection circuit |
-
2002
- 2002-09-12 CN CN 02279135 patent/CN2569300Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101034799B (en) * | 2006-02-06 | 2010-10-06 | 陶明 | Semiconductor device overtemperature protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030827 Termination date: 20100912 |