CN202796820U - Rapid fuse for high-capacity rectification device - Google Patents
Rapid fuse for high-capacity rectification device Download PDFInfo
- Publication number
- CN202796820U CN202796820U CN 201220377170 CN201220377170U CN202796820U CN 202796820 U CN202796820 U CN 202796820U CN 201220377170 CN201220377170 CN 201220377170 CN 201220377170 U CN201220377170 U CN 201220377170U CN 202796820 U CN202796820 U CN 202796820U
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- porcelain tube
- conductive plate
- fuse
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Abstract
The utility model, which relates to the field of the low-voltage electrical equipment control technology, particularly discloses a rapid fuse for a high-capacity rectification device. The rapid fuse comprises a porcelain tube and a plurality of purely silver melts penetrating the porcelain tube, wherein current-conducting plates are arranged at two ends of the porcelain tube. Specifically, the current-conducting plates are copper water-cooled ones; two ends of the melts are welded on the current-conducting plates through connecting plates; and a plurality of circular holes are punched on each of the melts. In addition, the length of the porcelain tube is 154mm to 164mm and the width thereof is 154 mm to 164 mm; the height is 37mm to 43mm, 57mm to 63mm or 77mm to 83mm. According to the utility model, the provided rapid fuse has characteristics of simple structure, low cost, high electrical performance, high breaking capacity, fast breaking speed, high current magnitude of a single fuse tube and small I<2>t value of the breaking energy and the like. The rapid fuse not only can be applied to a large-power rectifier like an electrolytic aluminium device but also can be applied to large-power convertor equipment for other industries.
Description
Technical field
The utility model relates to low voltage electrical equipment control technology field, relates in particular to a kind of fast acting fuse for protection semiconductor device in the large volume rectifying device.
Background technology
At present, the electrolytic industries such as China's aluminium, salt are in fast-developing period, the large-scale aluminium electrolysis cell current has reached 320kA, the power of electrolysis direct current power transformer and rectifier is corresponding to be 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; Capacity of decomposition is brought up to 200kA-400kA by 100kA; Breaking capacity is less than 10ms etc., and these technical indicators will double above than the technical indicator of former domestic 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 large electric current fast acting fuse that the high price import has labyrinth abroad, to satisfy the supporting needs of fast acting fuse in the Large size Aluminium station-service rectifying device.
The utility model content
The purpose of this utility model is, provides a kind of large volume rectifying device protection to use fast acting fuse, and it is simple in structure, cost is low, the electrical technology performance is higher.
For achieving the above object, the utility model provides a kind of large volume rectifying device protection to use fast acting fuse, and it comprises two ends with porcelain tube and a plurality of fine silver matter melt that penetrates in the porcelain tube of conductive plate, and described conductive plate is copper water-cooled conductive plate; Described melt two ends are welded on the conductive plate by brace, and all punching has a plurality of circular holes on each melt, and the length of described porcelain tube * wide is 154mm～164mm * 154mm～164mm, and height is 37mm～43mm, 57mm～63mm or 77mm～83mm.
Wherein, be filled with the quartz sand that solidifies as main compound take silicate in the described porcelain tube.
In the utility model, the conductive plate of described porcelain tube one end can be shape of plate plane, and the conductive plate of the other end is the quincunx plate with cross 5 * M12 screw.
Perhaps, an end conductive plate of described porcelain tube can be shape of plate plane, and the conductive plate of the other end is with water cavity forced water cooling shape plate.
In addition, the diameter of the circular hole that rushes is 1.3mm～1.7mm on the described melt, and two hole vertical direction spacings are 1.4mm～1.9mm, and two hole horizontal direction spacings are 6mm～10mm.
Fast acting fuse is used in large volume rectifying device protection of the present utility model, and it has, and breaking capacity is large, breaking speed fast, monomer fusion tube current capacity is large, disjunction energy I
2The characteristics such as the t value is little, its key technical indexes is: rated operational current (interchange) 3200A-7000A, break-time are less than 10ms, breaking capacity is in the 200kA(root mean square value) more than, disjunction energy I
2T is not more than 55 * 10
6A
2S.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of implementation structure of the utility model.
Fig. 2 is the side direction structural representation of Fig. 1.
Fig. 3 is the structural representation of the another kind of implementation structure of the utility model.
Fig. 4 is the side direction structural representation of Fig. 3.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, 2, the utility model provides a kind of large volume rectifying device protection fast acting fuse, and it comprises that two ends are with conductive plate 4,5 porcelain tube 1 and a plurality of interior fine silver matter melt 2 of porcelain tube 1 that penetrates.In the utility model, described conductive plate 4,5 can be copper water-cooled conductive plate.Described melt 2 two ends are welded on the conductive plate 4,5 by brace 3, and all punching has a plurality of circular holes on this each melt 2.Wherein, the length of described porcelain tube 1 * wide is 154mm～164mm * 154mm～164mm, and height is 37mm～43mm, 57mm～63mm or 77mm～83mm.The utility model is a kind of fast acting fuse for protection semiconductor device in the large volume rectifying device, and it has, and breaking capacity is large, breaking speed fast, monomer fusion tube current capacity is large, disjunction energy I
2The characteristics such as the t value is little, its product can be used for also can be used in other industrial powerful convertor equipments in the heavy-duty rectifiers such as electrolytic aluminium.
In the utility model specific embodiment, in adopting, described porcelain tube 1 is provided with the high strength porcelain tube 1 of melt 2, and this porcelain tube 1 comprises that height A is the product of 40mm, 60mm, three kinds of specifications of 80mm, and its external diameter is 159mm * 159mm.Melt 2 can be formed by high purity silver band punching out as thin as a wafer, and weld by brace 3 welding and with conductive plate 4,5 usefulness ashbury metals at the melt two ends.All punching has a plurality of circular holes on described each melt 2, and the diameter of the circular hole that rushes is specifically as follows 1.3mm～1.7mm, and two hole vertical direction spacings can be 1.4mm～1.9mm, and the spacing of two hole horizontal directions can be 6mm～10mm.Further, the utility model fills up the quartz sand 6 that useful silicate is main compound around melt 2.In the utility model specific embodiment, can adopt sodium metasilicate is that main compound is solidified into entity.
As a kind of selectivity embodiment of the present utility model, the conductive plate 4 of described porcelain tube 1 one ends can be shape of plate plane, and the conductive plate 5 of the other end can be the quincunx plate with cross 5 * M12 screw, single face water cooling mode in the applicable rectifier of this structure.
As another kind of selectivity embodiment of the present utility model, shown in Fig. 3,4, the difference of itself and above-described embodiment is, the conductive plate 4 ' of described porcelain tube 1 one ends can be shape of plate plane, the conductive plate 5 ' of the other end can be for cooling off the shape plate with the water cavity forced water, this infrastructure product can be used for forcing the water flowing cooling, can improve 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 the 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.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. fast acting fuse is used in a large volume rectifying device protection, it is characterized in that comprise two ends with porcelain tube and a plurality of fine silver matter melt that penetrates in the porcelain tube of conductive plate, described conductive plate is copper water-cooled conductive plate; Described melt two ends are welded on the conductive plate by brace, and all punching has a plurality of circular holes on each melt, and the length of described porcelain tube * wide is 154mm～164mm * 154mm～164mm, and height is 37mm～43mm, 57mm～63mm or 77mm～83mm.
2. fast acting fuse is used in large volume rectifying device protection as claimed in claim 1, it is characterized in that, is filled with the quartz sand that solidifies as main compound take silicate in the described porcelain tube.
3. fast acting fuse is used in large volume rectifying device protection as claimed in claim 1, it is characterized in that the conductive plate of described porcelain tube one end is shape of plate plane, and the conductive plate of the other end is the quincunx plate with cross 5 * M12 screw.
4. fast acting fuse is used in large volume rectifying device protection as claimed in claim 1, it is characterized in that an end conductive plate of described porcelain tube is shape of plate plane, and the conductive plate of the other end is with water cavity forced water cooling shape plate.
5. large volume rectifying device protection as claimed in claim 1 is used fast acting fuse; it is characterized in that; the diameter of the circular hole that rushes is 1.3mm～1.7mm on the described melt, and two hole vertical direction spacings are 1.4mm～1.9mm, and two hole horizontal direction spacings are 6mm～10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220377170 CN202796820U (en) | 2012-07-31 | 2012-07-31 | Rapid fuse for high-capacity rectification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220377170 CN202796820U (en) | 2012-07-31 | 2012-07-31 | Rapid fuse for high-capacity rectification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202796820U true CN202796820U (en) | 2013-03-13 |
Family
ID=47824024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220377170 Expired - Lifetime CN202796820U (en) | 2012-07-31 | 2012-07-31 | Rapid fuse for high-capacity rectification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202796820U (en) |
-
2012
- 2012-07-31 CN CN 201220377170 patent/CN202796820U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
|
| CX01 | Expiry of patent term |