CN204480991U - A kind of withstand voltage fast acting fuse - Google Patents
A kind of withstand voltage fast acting fuse Download PDFInfo
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- CN204480991U CN204480991U CN201520073228.3U CN201520073228U CN204480991U CN 204480991 U CN204480991 U CN 204480991U CN 201520073228 U CN201520073228 U CN 201520073228U CN 204480991 U CN204480991 U CN 204480991U
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- fuse
- withstand voltage
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- connection plates
- connecting piece
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Abstract
The utility model relates to electronic devices and components field, a kind of withstand voltage fast acting fuse is provided, this fuse comprises withstand voltage fusion tube, conductive connection plates, quartz sand, conductive connecting piece, melt, described withstand voltage fusion tube two ends are connected with conductive connection plates, the inner side of conductive connection plates is provided with conductive connecting piece, two conductive connecting pieces are connected with melt two ends respectively, remove the space filled stone sand of conductive connecting piece and melt in the region that conductive connection plates and withstand voltage fusion tube are surrounded.The utility model adopts the forced water type of cooling, can expand the fuse current capacity of single porcelain tube structure, reduces the usage quantity of fusion tube, reduces the volume of whole fuse and simplify electrical connection; Fuse is connected with the plate shaped radiator of water-cooled, and cooling effect is better, can accelerate the fusing speed of fuse, reduces fusing I2t value, reduces the power consumption of fuse, improve electrical technology performance and the efficiency of fuse.
Description
Technical field
The utility model relates to electronic devices and components field, refers more particularly to a kind of withstand voltage fast acting fuse.
Background technology
Fast acting fuse at present for rectifying tube or thyristor and the complete sets of equipment protection thereof comprises self cool fast acting fuse and water-cooled busbar cooled fast acting fuse etc., all there is following defect in these fuses: it is installed is all that the copper bar (aluminium arrange) of drawing with rectifying tube or thyristor or water-cooled copper bar are connected, and the heat that fuse power consumption produces is by insulated tube surface and connection copper bar surface emissivity diffusion; The fuse heat radiation relative difficulty of this technical scheme, general high-current fuse protector commonly use 2 ~ 4 insulated tube parallel connections, cause that the volume of device is large, electrical connection power consumption greatly, poor electrical performance.Along with the development of electronic technology, the current value of the devices such as rectifying tube has been significantly increased, and the current capacity of claimed fast acting fuse also increases, and above-mentioned fuse structure can not meet rectifying tube to the demand such as the increase of electric current and rapid heat dissipation, volume be little.
Utility model content
The defect that the utility model exists for above-mentioned fuse, a kind of pressure-resistant fast acting fuse is provided, this fuse comprises withstand voltage fusion tube, conductive connection plates, quartz sand, conductive connecting piece, melt, described withstand voltage fusion tube two ends are connected with conductive connection plates, the inner side of conductive connection plates is provided with conductive connecting piece, two conductive connecting pieces are connected with melt two ends respectively, at the area filling quartz sand that conductive connection plates and withstand voltage fusion tube are surrounded.
Further, described conductive connecting piece and the connection of fuse-link be by fuse-link by spot-welded on conductive connecting piece, then by soldering, conductive connecting piece and conductive connection plates to be welded together.
Further, described quartz sand is the quartz sand through silicate solidification.
Further, described melt is fine silver body.
The utility model compared with prior art, this fuse adopts in use to suppress and plate shaped to itself and water-cooled radiator is compressed the forced water type of cooling be connected, the fuse current capacity of single porcelain tube structure can be expanded, reduce the usage quantity of fusion tube, reduce the volume of whole fuse and simplify electrical connection; Simultaneously because the plate shaped radiator of fuse and water-cooled is connected, cooling effect is better, can accelerate the fusing speed of fuse, reduces fusing I
2t value, reduces the power consumption of fuse, improves electrical technology performance and the efficiency of fuse, thus brings considerable Social benefit and economic benefit for power electronics industry.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of utility model;
Fig. 2 is of the present utility model with power semiconductor device assembly structure schematic diagram.
Description of reference numerals: 1 withstand voltage fusion tube, 2 conductive connection plates, 3 quartz sands, 4 conductive connecting pieces, 5 melts, 6 pressure-resistant fast acting fuses, the plate shaped radiator of 7 water-cooled, 8 power semiconductor devices.
Embodiment
The enforcement of the technical solution of the utility model is described in detail, so that those skilled in the art better understand and implement below with reference to accompanying drawing.
As shown in Figure 1, the utility model fuse, it comprises withstand voltage fusion tube 1, conductive connection plates 2, quartz sand 3, conductive connecting piece 4, melt 5, described withstand voltage fusion tube 1 two ends are connected with conductive connection plates 2, the inner side of conductive connection plates 2 is provided with conductive connecting piece 4, be connected with melt 5 two ends at two conductive connecting pieces 4, at the space filled stone sand 3 of region except conductive connecting piece 4 and melt 5 that conductive connection plates 2 and withstand voltage fusion tube 1 surround.
Concrete, conductive connecting piece 4 and conductive connection plates 2 for be welded on conductive connecting piece 4 by fuse-link 5 by spot welding, then are welded together by soldering by described conductive connecting piece 4 and the connection of fuse-link 5.Use this welded type can make withstand voltage fuse bear suppress time inside fuse-link unaffected.
Concrete, described quartz sand 3 is the quartz sand through silicate solidification, can increase compression resistance and the anti-knock properties of fusion tube.
Concrete, described melt 5 is fine silver body, has electric property and stablizes, disjunction I
2the advantages such as t value is little.
As shown in Figure 2, fuse 6 of the present utility model is connected by suppressing directly to crimp with the plate shaped radiator 7 of water-cooled that power semiconductor device 8 is paid for the loss of cash or goods entrusted to one, realize fuse 6 and share the plate shaped radiator 7 of water-cooled with power semiconductor device 8, and be connected in series with power semiconductor device 8, when power semiconductor device 8 be reversed puncture formed certain branch, short-circuit time, Melt molten in the fast acting fuse 6 that the short circuit current flowing through fault branch makes series connection, vaporization, arcing, after the energy of electric arc is absorbed by quartz sand 3, arc extinction, disjunction fault branch, ensure that voltage transforming rectifier normally runs.
The utility model adopts to suppress and plate shaped to fuse and water-cooled radiator is compressed the forced water type of cooling be connected, and can expand the fuse current capacity of single porcelain tube structure, reduces the usage quantity of fusion tube, reduces the volume of whole fuse and simplify electrical connection; Meanwhile, because the plate shaped radiator of fuse and water-cooled is connected, cooling effect is better, can accelerate the fusing speed of fuse, reduces fusing I
2t value, reduces the power consumption of fuse, improves electrical technology performance and the efficiency of fuse, thus brings considerable Social benefit and economic benefit for power electronics industry.
Claims (4)
1. a withstand voltage fast acting fuse, it is characterized in that it comprises withstand voltage fusion tube (1), conductive connection plates (2), quartz sand (3), conductive connecting piece (4), melt (5), described withstand voltage fusion tube (1) two ends are connected with conductive connection plates (2), the inner side of conductive connection plates (2) is provided with conductive connecting piece (4), be connected with melt (5) two ends respectively at two conductive connecting pieces (4), at the area filling quartz sand (3) that conductive connection plates (2) and withstand voltage fusion tube (1) surround.
2. the fuse belonging to claim 1, it is characterized in that the connection of described conductive connecting piece (4) and fuse-link (5) for by fuse-link (5) by spot-welded on conductive connecting piece (4), then by soldering, conductive connecting piece (4) and conductive connection plates (2) to be welded together.
3. the fuse-link as described in right 1, is characterized in that described quartz sand (3) is the quartz sand through silicate solidification.
4. fuse as claimed in claim 1 or 2, is characterized in that described melt (5) is fine silver body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520073228.3U CN204480991U (en) | 2015-02-02 | 2015-02-02 | A kind of withstand voltage fast acting fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520073228.3U CN204480991U (en) | 2015-02-02 | 2015-02-02 | A kind of withstand voltage fast acting fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204480991U true CN204480991U (en) | 2015-07-15 |
Family
ID=53636768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520073228.3U Active CN204480991U (en) | 2015-02-02 | 2015-02-02 | A kind of withstand voltage fast acting fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204480991U (en) |
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2015
- 2015-02-02 CN CN201520073228.3U patent/CN204480991U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |