CN2615855Y - Fast fuse for protection of large volume rectifying device - Google Patents
Fast fuse for protection of large volume rectifying device Download PDFInfo
- Publication number
- CN2615855Y CN2615855Y CN 03218679 CN03218679U CN2615855Y CN 2615855 Y CN2615855 Y CN 2615855Y CN 03218679 CN03218679 CN 03218679 CN 03218679 U CN03218679 U CN 03218679U CN 2615855 Y CN2615855 Y CN 2615855Y
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- CN
- China
- Prior art keywords
- porcelain tube
- conductive plate
- rectifying device
- fuse
- melt
- 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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Abstract
The utility model relates to a high capacity quick-break fuse used for protecting semiconductor devices in a rectifying device, which comprises a porcelain tube (fusion tube) with a conductive plate at both ends and a plurality of fuse-elements penetrating in the porcelain tube, wherein the two ends of the fuse-elements are welded to the two ends of the conductive plate via a connector, each fuse-element is punched with a plurality of circular holes, and the rest portion of the porcelain tube is filled with quartz sands mainly cured of silicates. The utility model is characterized in strong breaking capacity, fast breaking speed, big current capacity of single fusion tube, and small breaking capacity value I <2> t .
Description
Technical field
The utility model belongs to low voltage electrical equipment control technology field; relate to a kind of fast acting fuse that is used for protection semiconductor device in the big capacity rectifying device; its product can be used for also can be used in other industrial powerful convertor equipment in the heavy-duty rectifiers such as electrolytic aluminium.
Background technology
At present, electrolytic industries such as China's aluminium, salt are in fast-developing period, the large-scale aluminium electrolysis cell current has reached 320kA, the electrolysis direct current power supply with the power of transformer and rectifier correspondingly increased considerably, electric current enlarges, protect the technical indicator with fast acting fuse that higher requirement has also been arranged to rectifying tube in the rectifying device, it is mainly reflected in: the single tube magnitude of current is increased to 5000A～7000A thereupon; Breaking capacity is brought up to 200kA by 100kA; Breaking capacity is less than 10ms etc., and these technical indicators will be enhanced about more than once than the technical indicator of former homemade like product of calendar year 2001.Because this area traditional structure fast acting fuse product still can not reach above-mentioned technical indicator in practicing, to such an extent as to China rectifier enterprise has to be forced to the big electric current fast acting fuse that the high price import has labyrinth abroad, to satisfy large-scale aluminium manufacturer supporting needs of fast acting fuse in the rectifying device.
The utility model content
The purpose of this utility model is to solve the problem that state of the art exists, and then provides a kind of big capacity rectifying device protection simple in structure, that cost is low, the electrical technology performance is high to use fast acting fuse.
The technical solution of making is so for achieving the above object: the big capacity rectifying device protection that is provided has porcelain tube (fusion tube) and a plurality of fine silver system melt that penetrates in the porcelain tube that two ends have conductive plate with fast acting fuse; the melt two ends are welded on the conductive plate of two ends by brace; in each melt upper punch a plurality of circular holes are arranged; it is the quartz sand that main compound solidifies that the porcelain tube remainder fills up with silicate; the length of porcelain tube * wide is 145～155mm * 145～155mm, and height is 37～43mm, 57～63mm or 77～83mm.Series type fast acting fuse after this design has that breaking capacity is big, breaking speed is fast, monomer fusion tube current capacity is big, disjunction energy I
2Characteristics such as the t value is little, its key technical indexes is: rated operational current (interchange) 3200A～7000A, break-time be less than 10ms, breaking capacity more than 205kA (root mean square value), disjunction energy (I
2T) be not more than 55 * 10
6A
2S.Above-mentioned technical indicator with represent in these series of products specification 1000V/6400A in internationally famous laboratory-ABB group high-power laboratory test, according to the IEC-269 of International Electrotechnical Commission standard in this laboratory in 1150V, 205kA (root mean square value) hookup pass the test pass through.
Description of drawings
Fig. 1 is the main line of vision schematic diagram of a kind of specific embodiment structure of the utility model.
Fig. 2 is the side direction structural representation of Fig. 1.
The main line of vision schematic diagram of the another kind of specific embodiment structure of Fig. 3 the utility model.
Fig. 4 is the side direction structural representation of Fig. 3.
Embodiment
Referring to accompanying drawing, in comprising with fast acting fuse, big capacity rectifying device protection described in the utility model is provided with the high strength porcelain tube 1 of melt 2, and porcelain tube 1 comprises that height A is 40mm, 60mm, three kinds of specification products of 80mm, and external diameter is 150mm * 150mm; Melt 2 is formed by high pure silver belt punching out as thin as a wafer, weld by brace 3 welding and with conductive plate 4,5 usefulness ashbury metals at the melt two ends, in each melt 2 upper punch a plurality of circular holes are arranged, be 1.3～1.7mm towards the diameter of circular hole, two hole vertical direction spacings are 1.4～1.9mm, and two hole horizontal direction spacings are 6～10mm; Tamp quartz sand 6 around the melt, and be that the compound of leading is solidified into entity with sodium metasilicate.In structure illustrated in figures 1 and 2, porcelain tube 1 one end conductive plates 4 are shape of plate plane, and other end conductive plate 5 is for having the quincunx plate of " ten " font 5 * M12 screw, and this structure is suitable for single face water cooling mode in the rectifier.In Fig. 3 and structure shown in Figure 4, porcelain tube 1 one end conductive plates 4 are shape of plate plane, and other end conductive plate 5 is for having but shape plate of water cavity Forced water cooling, and this infrastructure product can be used for forcing the water flowing cooling, improves the current capacity of fuse.
Operation principle of the present utility model is: fuse is everlasting and is connected in series with rectifying tube (or thyristor) in the brachium pontis of electrolytic rectifier device, when the rectifying tube reverse breakdown forms certain branch, short-circuit, the a large amount of short circuit currents that flow through fault branch make the interior melt fusing of fuse, vaporization, the arcing of series connection, after the energy of electric arc is absorbed by quartz sand, arc extinction, the disjunction fault branch keeps rectifier normally to move, thereby guarantees that electrolysis powers to electrolysis tank incessantly with DC power supply.Because this fuse breaking speed is fast, the disjunction energy is little, when faults such as rectifying tube overload or external short circuit, can cooperate with the alternating-current switch characteristic is fine, disconnect AC power and keep the fuse not damaged by alternating-current switch.
Claims (4)
1, a kind of big capacity rectifying device protection fast acting fuse; it is characterized in that having porcelain tube (1) and a plurality of fine silver system melt (2) that penetrates in the porcelain tube (1) that two ends have conductive plate (4,5); melt (2) two ends are welded on the conductive plate (4,5) by brace (3); in each melt (2) upper punch a plurality of circular holes are arranged; it is the quartz sand (6) that main compound solidifies that the porcelain tube remainder fills up with silicate; the length of porcelain tube (1) * wide is 145～155m * 145～155mm, and height is 37～43mm, 57～63mm or 77～83mm.
2, fast acting fuse is used in big capacity rectifying device protection as claimed in claim 1, it is characterized in that porcelain tube (1) one end conductive plate (4) is shape of plate plane, and other end conductive plate (5) is for having the quincunx plate of " ten " font 5 * M12 screw.
3, fast acting fuse is used in big capacity rectifying device protection as claimed in claim 1, it is characterized in that porcelain tube (1) one end conductive plate (4) is shape of plate plane, and other end conductive plate (5) is for having but shape plate of water cavity Forced water cooling.
4, fast acting fuse is used in big capacity rectifying device protection as claimed in claim 1, it is characterized in that on the melt (2) be 1.3～1.7mm towards the diameter of circular hole, two hole vertical direction spacings are 1.4～1.9mm, two hole horizontal direction spacings are 6～10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03218679 CN2615855Y (en) | 2003-04-01 | 2003-04-01 | Fast fuse for protection of large volume rectifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03218679 CN2615855Y (en) | 2003-04-01 | 2003-04-01 | Fast fuse for protection of large volume rectifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2615855Y true CN2615855Y (en) | 2004-05-12 |
Family
ID=34243968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03218679 Expired - Fee Related CN2615855Y (en) | 2003-04-01 | 2003-04-01 | Fast fuse for protection of large volume rectifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2615855Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511300A (en) * | 2018-05-07 | 2018-09-07 | 西安三鑫熔断器有限公司 | A kind of high current fastp-acting fuse |
-
2003
- 2003-04-01 CN CN 03218679 patent/CN2615855Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511300A (en) * | 2018-05-07 | 2018-09-07 | 西安三鑫熔断器有限公司 | A kind of high current fastp-acting fuse |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |