CN101763999A - Dropout fuse - Google Patents
Dropout fuse Download PDFInfo
- Publication number
- CN101763999A CN101763999A CN200810158614A CN200810158614A CN101763999A CN 101763999 A CN101763999 A CN 101763999A CN 200810158614 A CN200810158614 A CN 200810158614A CN 200810158614 A CN200810158614 A CN 200810158614A CN 101763999 A CN101763999 A CN 101763999A
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- CN
- China
- Prior art keywords
- moving contact
- lower moving
- fusion tube
- contact
- fuse
- 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.)
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- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention discloses a dropout fuse which is provided with a fusion tube. The dropout fuse is characterized in that an upper moving contact pedestal is arranged on the fusion tube; an upper moving contact is arranged in the upper moving contact pedestal; a twin-hook dropout support is arranged at the lower end of the fusion tube and a lower moving contact pedestal is arranged in the middle of the twin-hook dropout support; a lower moving contact is arranged in the lower moving contact pedestal; and reaction springs are arranged at the top ends of the moving contact pedestals. The upper moving contact and the lower moving contact are made of copper round flexible leads and are reliably connected with an upper moving contact terminal and a lower moving contact terminal by the reaction springs in the upper and lower moving contact pedestals. The reaction springs are arranged in the upper and lower moving contact pedestals, thus the dropout fuse ensures the junction to be good in contact, and is durable.
Description
Technical field the present invention relates to fuse, directly relates to fuse switch, and being specially adapted to rated voltage is in 10KV or the 35KV electric power system.
Background technology is in the distribution transformer high-pressure side, fuse switch be used as transformer overload, short circuit and load current branch, close, be a kind of high voltage protective electrical equipment of transformer indispensability.Existing fuse switch is fixed on the metal cross arm by extension plate, be serially connected in the power circuit that feeds transformer during the fuse operation, one end fuse of band button is contained in the upper contact head of fusion tube when operate as normal, being used the pressure releasing cap that the release of pressure sheet is housed presses, holding the other end of silk pulls out by fusion tube, be connected with reverse diving board back-pressure and with contact, fuse is in tension always under the effect of reverse diving board torsion, and tightly locks turning joint.When fuse is in closing position,, make the contact of a plurality of fuses become reliable because upper static contact is downward and the outward thrust of shell fragment; When electric power system was broken down, fault current was superpower, and with the fuse quick-break, the fuse turning joint of having no progeny discharges, and added under the pressure of fusion tube shell fragment under upper contact head that the rapid iron of effect that fusion tube originally goes out deadweight falls, and with circuitry cuts, forms significantly to disconnect and isolates.
Yet find that in use also there is certain defective in existing fuse switch owing to be subjected to structural limitations, that is exactly that anti-rain, resistance to corrosion are low, easily causes loose contact, also electric arc can occur when operating a switch and iron falls automatically.
Summary of the invention purpose of the present invention just provides a kind of improved fuse switch, and it can overcome the low and drawbacks such as loose contact and arcing of anti-rain, resistance to corrosion that existing fuse switch exists effectively.
The object of the present invention is achieved like this, and fuse switch has fusion tube, and the upper end of fusion tube is provided with the movable contact headstock, installs moving contact in the last movable contact headstock; The lower end of fusion tube is provided with double hook and falls supporter, falls the middle lower moving contact seat that is provided with of supporter, and lower moving contact is installed in the lower moving contact seat.
As further scheme of the present invention, be that described upward moving contact and lower moving contact are copper soft round body, the described supporter that falls is the stainless steel stamping parts.
As the improvement project of invention, be that described going up in movable contact headstock and the lower moving contact seat is provided with antagonistic spring, last moving contact and lower moving contact are copper round flexible conductor with the lead that is connected of terminal.
The present invention is because copper round moving contact has been adopted in fusion tube upper end and fusion tube lower end, and upper and lower moving contact is installed in the last movable contact headstock and lower moving contact seat that has antagonistic spring, it is firm to make upper static contact and the following fixed contact of moving contact and lower moving contact and insulator on the fusion tube become to contact, thereby has fundamentally removed the problem of loose contact, easy burn-out and arcing.
Appended drawings is the structure principle chart of fuse switch of the present invention, and the invention will be further described below in conjunction with accompanying drawing.
The embodiment accompanying drawing shows the structure of fuse switch of the present invention, and the upper end of fusion tube 1 is last movable contact headstock 2, installs moving contact 3 in the last movable contact headstock 2; The lower end of fusion tube 1 is that double hook falls supporter 4, in the middle of falling supporter 4 lower moving contact seat 5 is set, lower moving contact 6 is installed in the lower moving contact seat 5, and last moving contact 3 is connected with terminal 9 with lower moving contact seat 5 interior antagonistic springs 8 by last movable contact headstock 2 by copper soft round line 7 with lower moving contact 6.Fusion tube upper contact head seat can be the stainless pipe body, and last moving contact and lower moving contact can be copper round, and double hook falls supporter and can be stainless steel punch forming part.
Installation process of the present invention: at first fuse switch fuse upper end is crimped in the movable contact headstock by on the terminal that copper soft round conductor connected, the bounce-back plate is crossed in the fuse lower end, and to be crimped on the lower moving contact seat interior by on the terminal that copper soft round conductor connected.Insert with insulated tension pole in the circular hole of moving contact on the fusion tube, fusion tube is easily hung on the lower end supporter of insulator, pull up pull bar this moment, fusion tube upwards pushed get final product energized, the present invention's work of can switching on.
Claims (3)
1. fuse switch has fusion tube (1), it is characterized in that: fusion tube (1) upper end is provided with movable contact headstock (2), installs moving contact (3) in the last movable contact headstock (2); The lower end of fusion tube (1) is provided with double hook and falls supporter (4), falls the middle lower moving contact seat (5) that is provided with of supporter (4), and lower moving contact (6) is installed in the lower moving contact seat (5).
2. fuse switch according to claim 1 is characterized in that: described upward moving contact (3) and lower moving contact (6) are copper soft round body, and the described supporter (4) that falls is the stainless steel stamping parts.
3. fuse switch according to claim 1 and 2, it is characterized in that: described going up in movable contact headstock (2) and the lower moving contact seat (5) is provided with antagonistic spring (8), and last moving contact (3) and lower moving contact (6) are copper round flexible conductor (7) with the lead that is connected of terminal (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810158614A CN101763999A (en) | 2008-11-04 | 2008-11-04 | Dropout fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810158614A CN101763999A (en) | 2008-11-04 | 2008-11-04 | Dropout fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101763999A true CN101763999A (en) | 2010-06-30 |
Family
ID=42495095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810158614A Pending CN101763999A (en) | 2008-11-04 | 2008-11-04 | Dropout fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101763999A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368596A (en) * | 2011-10-21 | 2012-03-07 | 河南省电力公司漯河供电公司 | Electrically charged isolator |
| CN102789933A (en) * | 2012-08-03 | 2012-11-21 | 广西和谐电力科技有限公司 | Outdoor alternating-current high-voltage drop-out fuse |
| CN102810439A (en) * | 2012-08-03 | 2012-12-05 | 广西和谐电力科技有限公司 | Outdoor alternating current high-voltage drop-out fuse |
| CN104715984A (en) * | 2013-12-12 | 2015-06-17 | 国网上海市电力公司 | Welding plate in oscillating bar mechanism of drop-out fuse |
| CN104715984B (en) * | 2013-12-12 | 2018-08-31 | 国网上海市电力公司 | A kind of welded plate in the swing-bar mechanism of fuse switch |
-
2008
- 2008-11-04 CN CN200810158614A patent/CN101763999A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368596A (en) * | 2011-10-21 | 2012-03-07 | 河南省电力公司漯河供电公司 | Electrically charged isolator |
| CN102789933A (en) * | 2012-08-03 | 2012-11-21 | 广西和谐电力科技有限公司 | Outdoor alternating-current high-voltage drop-out fuse |
| CN102810439A (en) * | 2012-08-03 | 2012-12-05 | 广西和谐电力科技有限公司 | Outdoor alternating current high-voltage drop-out fuse |
| CN102789933B (en) * | 2012-08-03 | 2015-09-02 | 广西和谐电力科技有限公司 | Outdoor ac high voltage drop fuse |
| CN104715984A (en) * | 2013-12-12 | 2015-06-17 | 国网上海市电力公司 | Welding plate in oscillating bar mechanism of drop-out fuse |
| CN104715984B (en) * | 2013-12-12 | 2018-08-31 | 国网上海市电力公司 | A kind of welded plate in the swing-bar mechanism of fuse switch |
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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: 20100630 |