CN202871731U - Rapid fuse used for protection of high-capacity rectifying device - Google Patents
Rapid fuse used for protection of high-capacity rectifying device Download PDFInfo
- Publication number
- CN202871731U CN202871731U CN 201220378242 CN201220378242U CN202871731U CN 202871731 U CN202871731 U CN 202871731U CN 201220378242 CN201220378242 CN 201220378242 CN 201220378242 U CN201220378242 U CN 201220378242U CN 202871731 U CN202871731 U CN 202871731U
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- porcelain tube
- conductive plate
- melt
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- rectifying device
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Abstract
The utility model relates to the control technology field of low-voltage electrical equipment, and specifically discloses a rapid fuse used for protection of a high-capacity rectifying device. The rapid fuse comprises a porcelain tube and a plurality of pure silver melt bodies, wherein two ends of the porcelain tube are provided with conductive plates which belong to aluminium water-cooled conductive plates, and the plurality of pure silver melt bodies penetrate into the porcelain tube. Two ends of each melt body are welded on the conductive plates via connecting pieces. A plurality of round holes are punched on each melt body. The multiplication of the length and the width of the porcelain tube equals 130mm-140mm*130mm-140mm. The porcelain tube is 37mm-43mm, or 57mm-63mm or 77mm-83mm in height. The rapid fuse of the utility model is simple in structure, low in cost and high in electrical technical performance, has the characteristics of high breaking ability, rapid breaking speed, high monomer fuse tube current capacity, low breaking energy I2t value or the like, can be used for electrolytic aluminium and other high-power rectifiers, and can also be applied to other industrial high-power conversion devices.
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; Capacity of decomposition 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 aluminium matter 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 130mm～140mm * 130mm～140mm, 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 4 * 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) 3000A-4800A, 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 aluminium matter 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 130mm～140mm * 130mm～140mm, 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 135mm * 135mm.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 4 * 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 (4)
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 aluminium matter 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 130mm ~ 140mm * 130mm ~ 140mm, 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 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 4 * M12 screw.
3. 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.
4. fast acting fuse is used in large volume rectifying device protection as claimed in claim 1, 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 201220378242 CN202871731U (en) | 2012-07-31 | 2012-07-31 | Rapid fuse used for protection of high-capacity rectifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220378242 CN202871731U (en) | 2012-07-31 | 2012-07-31 | Rapid fuse used for protection of high-capacity rectifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202871731U true CN202871731U (en) | 2013-04-10 |
Family
ID=48038425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220378242 Expired - Lifetime CN202871731U (en) | 2012-07-31 | 2012-07-31 | Rapid fuse used for protection of high-capacity rectifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202871731U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103588461A (en) * | 2013-11-19 | 2014-02-19 | 浙江茗熔电器保护系统有限公司 | Curing agent for fuse, and preparation method thereof |
-
2012
- 2012-07-31 CN CN 201220378242 patent/CN202871731U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103588461A (en) * | 2013-11-19 | 2014-02-19 | 浙江茗熔电器保护系统有限公司 | Curing agent for fuse, and preparation method thereof |
| CN103588461B (en) * | 2013-11-19 | 2016-02-03 | 浙江茗熔电器保护系统有限公司 | A kind of fusible cut-out solidifying agent and preparation method thereof |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |