CN203165835U - Capacitor protection fuse - Google Patents
Capacitor protection fuse Download PDFInfo
- Publication number
- CN203165835U CN203165835U CN 201320183571 CN201320183571U CN203165835U CN 203165835 U CN203165835 U CN 203165835U CN 201320183571 CN201320183571 CN 201320183571 CN 201320183571 U CN201320183571 U CN 201320183571U CN 203165835 U CN203165835 U CN 203165835U
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- China
- Prior art keywords
- fuse
- hole
- protection
- conductive gasket
- end cap
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- Expired - Fee Related
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Abstract
The utility model relates to a capacitor protection fuse and mainly aims to solve the problem that an existing fuse has small breaking capacity and poor short-circuit protection performance when being connected in parallel to a capacitor circuit. Melts (12) are provided with an odd number of rows of row holes which are equidistantly arranged side by side in the axial direction of a fusion tube (7), and the row holes include overload protection holes (11) located in the middle and short-circuit protection holes (10) located at two sides, wherein the overload protection holes (11) are hexagonal, and the short-circuit protection hole (10) are diamond-shaped. The capacitor protection fuse has the characteristics of good arc extinguishing and breaking capacity and high safety.
Description
Technical field
The utility model relates to a kind of fuse, refers in particular to a kind of electric capacity protection fuse.
Background technology
Fuse belongs to high voltage protective electrical appliance element, is mainly used in industrial enterprise and large-scale power station, and switchgear house etc. are as protections such as the inner member puncture of high-voltage parallel compensation condenser and overload, short circuits.The high-voltage capacitance protection fuse that China produces at present; mainly based on high-pressure injection formula fuse; when cut-offfing circuit; the electric arc ejection is arranged, cause operating personnel injured easily, large-scale accident such as initiation fire; and when in parallel with electric capacity; its connecting-disconnecting function less (that common is 6.3kA), no current limiting characteristic, defective such as the short-circuit protection performance is weak.
The utility model content
In order to overcome deficiency and the defective in the background technology, the utility model provides a kind of electric capacity protection fuse, mainly solves when existing fuse is connected in parallel on capacitor circuit to exist connecting-disconnecting function little the problem that the short-circuit protection performance is weak.
The technical solution of the utility model is: a kind of electric capacity protection fuse; comprise fusion tube; be located at the end cap at fusion tube two ends; the described end cap outside is connected with contact knife; be provided with the conductive gasket that is sealed and matched between described end cap and the fusion tube; described end cap is connected by bolted with described conductive gasket; described conductive gasket constitutes enclosed cavity with the inner chamber sealing of fusion tube; be provided with the some melts that are arranged side by side that are connected between the conductive gasket of two ends in the described fuse tube; be filled with the quartz sand that arc extinguishing is used in the described enclosed cavity; described melt is provided with axially equidistant round side by side of corresponding fusion tube; described round is provided with radix row, and described round is divided into the overload protection hole in the middle of being positioned at, and the short-circuit protection hole that is positioned at both sides; wherein said overload protection hole is hexagonal structure, and described short-circuit protection hole is diamond structure.
The conductive gasket of arbitrary end is provided with corresponding through hole with end cap, be provided with the indicating device seat in this through hole, be provided with the elastic copper sheet of compression in the described indicating device seat, the compression end of described elastic copper sheet is connected with the other end and is fixed on secondary fusible link on the opposite side conductive gasket.
Described short-circuit protection hole laterally is arranged side by side for its adjacent mode of rhombus angle.
Described overload protection hole laterally is arranged side by side for its adjacent mode in sideline.
The beneficial effects of the utility model: owing to take such scheme, electric capacity protection fuse of the present utility model, the narrow neck that the axial equidistant round of processing at melt side by side of corresponding fusion tube forms, during narrow neck turning circuit by the hexagonal structure round, because conductive area obviously reduces, electric current during through this narrow neck resistance enlarge markedly, effectively raise the sensitive characteristic at this narrow neck place, strengthened the short-circuit protection effect of circuit; The narrow neck conductive characteristic equilibrium that rhombus round in its both sides forms is when circuit overloads, when reaching rated current, the together disjunction of the narrow neck of its rhombus round, breaking arc is dispensed into arc extinguishing quartz sand by each narrow neck in diamond hole place, effective booster arc quenching effect, safety and stability.Have good, the safe characteristics of arc extinguishing and connecting-disconnecting function.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the local enlarged diagram at A place among Fig. 1.
Among the figure, 1-contact knife, 2-bolt, 3-elastic copper sheet, 4-indicating device seat, 5-end cap, 6-conductive gasket, 7-fusion tube, the secondary fusible link of 8-, 9-quartz sand, 10-short-circuit protection hole, 11-overload protection hole, 12-melt.
Embodiment
At accompanying drawing embodiment of the present utility model is described further below:
Shown in figure; this electric capacity protection fuse; comprise fusion tube 7; be located at the end cap 5 at fusion tube 7 two ends; described end cap 5 outsides are connected with contact knife 1; be provided with the conductive gasket 6 that is sealed and matched between described end cap 5 and the fusion tube 7; described end cap 5 is fastenedly connected by bolt 2 with described conductive gasket 6; described conductive gasket 6 constitutes enclosed cavity with the inner chamber sealing of fusion tube 7; be provided with the some melts 12 that are arranged side by side that are connected between the two ends conductive gasket 6 in the described fuse tube; be filled with the quartz sand 9 that arc extinguishing is used in the described enclosed cavity; described melt 12 is provided with axially equidistant round side by side of corresponding fusion tube 7; described round is provided with radix row; described round is divided into the overload protection hole 11 in the middle of being positioned at; and the short-circuit protection hole 10 that is positioned at both sides, wherein said overload protection hole 11 is hexagonal structure, described short-circuit protection hole 10 is diamond structure.The narrow neck that the axial equidistant round of processing at melt side by side of corresponding fusion tube forms, during narrow neck turning circuit by the hexagonal structure round, because conductive area obviously reduces, electric current during through this narrow neck resistance enlarge markedly, effectively raise the sensitive characteristic at this narrow neck place, strengthened the short-circuit protection effect of circuit; The narrow neck conductive characteristic equilibrium that rhombus round in its both sides forms is when circuit overloads, when reaching rated current, the together disjunction of the narrow neck of its rhombus round, breaking arc is dispensed into arc extinguishing quartz sand by each narrow neck in diamond hole place, effective booster arc quenching effect, safety and stability.Have good, the safe characteristics of arc extinguishing and connecting-disconnecting function.
The conductive gasket 6 of arbitrary end is provided with corresponding through hole with end cap 5, be provided with indicating device seat 4 in this through hole, be provided with the elastic copper sheet 3 of compression in the described indicating device seat 4, the compression end of described elastic copper sheet 3 is connected with the other end and is fixed on secondary fusible link 8 on the opposite side conductive gasket 6.Described elastic copper sheet also can be elastomeric elements such as spring, torsion spring and hardwood clapper, after fusible link fusing, secondary fusible link because and melt be that shunting in parallel arranges, so this moment, the electric current of secondary fusible link sharply increased, secondary fusible link heating fusing, cause the compressed compression end of sprung copper to eject, play the fusing deixis.
Described short-circuit protection hole 10 laterally is arranged side by side for its adjacent mode of rhombus angle.The elongated narrow neck that balanced round forms effectively strengthens water conservancy diversion resistance, and short-circuit protection is effective.
Described overload protection hole 11 laterally is arranged side by side for its adjacent mode in sideline.The narrow neck of thin weak point that balanced round forms, current stabilization, during overload, the effective balanced each point electric current of energy, fusing simultaneously divides breakpoint, and the electric arc multiple spot is dispersed to arc extinguishing quartz sand, and arc quenching effect is good.
Embodiment should not be considered as the restriction to utility model, but any improvement of doing based on spirit of the present utility model, all should be within protection range of the present utility model.
Claims (4)
1. an electric capacity protection is used fuse; comprise fusion tube (7); be located at the end cap (5) at fusion tube (7) two ends; described end cap (5) outside is connected with contact knife (1); be provided with the conductive gasket (6) that is sealed and matched between described end cap (5) and the fusion tube (7); described end cap (5) is fastenedly connected by bolt (2) with described conductive gasket (6); described conductive gasket (6) constitutes enclosed cavity with the inner chamber sealing of fusion tube (7); be provided with the some melts (12) that are arranged side by side that are connected between the two ends conductive gasket (6) in the described fuse tube; be filled with the quartz sand (9) that arc extinguishing is used in the described enclosed cavity; it is characterized in that: described melt (12) is provided with axially equidistant round side by side of corresponding fusion tube (7); described round is provided with radix row; described round is divided into the overload protection hole (11) in the middle of being positioned at; and the short-circuit protection hole (10) that is positioned at both sides; wherein said overload protection hole (11) is hexagonal structure, and described short-circuit protection hole (10) is diamond structure.
2. electric capacity according to claim 1 protection is used fuse; it is characterized in that: the conductive gasket of arbitrary end (6) is provided with corresponding through hole with end cap (5); be provided with indicating device seat (4) in this through hole; be provided with the elastic copper sheet (3) of compression in the described indicating device seat (4), the compression end of described elastic copper sheet (3) is connected with the other end and is fixed on secondary fusible link (8) on the opposite side conductive gasket (6).
3. fuse is used in electric capacity protection according to claim 1 and 2, and it is characterized in that: described short-circuit protection hole (10) laterally is arranged side by side for its adjacent mode of rhombus angle.
4. fuse is used in electric capacity protection according to claim 1 and 2, and it is characterized in that: described overload protection hole (11) laterally is arranged side by side for its adjacent mode in sideline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320183571 CN203165835U (en) | 2013-04-12 | 2013-04-12 | Capacitor protection fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320183571 CN203165835U (en) | 2013-04-12 | 2013-04-12 | Capacitor protection fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203165835U true CN203165835U (en) | 2013-08-28 |
Family
ID=49027000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320183571 Expired - Fee Related CN203165835U (en) | 2013-04-12 | 2013-04-12 | Capacitor protection fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203165835U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594301A (en) * | 2013-11-21 | 2014-02-19 | 四川天微电子有限责任公司 | Fuse protector |
| CN105679620A (en) * | 2016-02-22 | 2016-06-15 | 浙江新力熔断器有限公司 | Vehicle-mounted fuse and machining method and assembling steps therefor |
-
2013
- 2013-04-12 CN CN 201320183571 patent/CN203165835U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103594301A (en) * | 2013-11-21 | 2014-02-19 | 四川天微电子有限责任公司 | Fuse protector |
| CN105679620A (en) * | 2016-02-22 | 2016-06-15 | 浙江新力熔断器有限公司 | Vehicle-mounted fuse and machining method and assembling steps therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20140412 |