CN201877382U - Current-limiting fuse - Google Patents
Current-limiting fuse Download PDFInfo
- Publication number
- CN201877382U CN201877382U CN2010206350133U CN201020635013U CN201877382U CN 201877382 U CN201877382 U CN 201877382U CN 2010206350133 U CN2010206350133 U CN 2010206350133U CN 201020635013 U CN201020635013 U CN 201020635013U CN 201877382 U CN201877382 U CN 201877382U
- Authority
- CN
- China
- Prior art keywords
- pipe cap
- fusible link
- fuse
- pipe
- fluxing
- 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.)
- Expired - Fee Related
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- Fuses (AREA)
Abstract
The utility model discloses a current-limiting fuse. The current-limiting fuse is characterized in that the two ends of a ceramic pipe are connected with a first pipe cap and a second pipe cap which are conductive; fuse wires are arranged in the ceramic pipe; the first pipe cap and the second pipe cap are provided with connecting plates; the two ends of the fuse wires are respectively connected with the connecting plates on the first pipe cap and the second pipe cap; the ceramic pipe is internally at least provided with the two fuse wires which are arranged in a mode of being parallel mutually; fluxing bodies with the fusing point of being lower than that of the fuse wires are arranged on the fuse wires, and are made of metal. By adopting the current-limiting fuse, when faults such as short circuit or overcurrent and the like occur in a circuit, the fuse wires in the fuse can be fused quickly.
Description
Technical field
The utility model relates to a kind of circuit protection device, is specifically related to a kind of current limiting fuse.
Background technology
As everyone knows, electrical equipment faults such as short circuit and current overload occur easily in the operational environment that circuit and vibrations are jolted, thereby electrical equipment is damaged, and causes economic loss.So people have designed can be to the fuse of electrical installation and circuit enforcement short circuit and overload protection.Present fuse can not make fusible link fusing in time when circuit breaks down, postponed the fault of circuit, and the electrical equipment of working is caused impacts such as short circuit current, reduces the life-span of electrical equipment.
Summary of the invention
At above-mentioned technical problem, the utility model provides a kind of current limiting fuse, is short-circuited or during fault such as overcurrent, the fusible link in the fuse can fuse apace at circuit.
The technical scheme that realizes above-mentioned purpose is as follows:
Current limiting fuse, the two ends of porcelain tube are connected with first pipe cap and second pipe cap of conduction, fusible link is arranged in the porcelain tube, described first pipe cap and second pipe cap are provided with connecting plate, the two ends of fusible link are connected with connecting plate on second pipe cap with first pipe cap respectively, are provided with two fusible links in the described porcelain tube at least, arrange in the mode that is parallel to each other between these fusible links, fusible link is provided with the body of fluxing that fusing point is lower than this fusible link, and this body of fluxing is the body of fluxing of metal.
Connecting plate on described second pipe cap is provided with centre bore, and an end of this centre bore connects a sleeve pipe, is provided with the compression spring in the sleeve pipe, and at least one fusible link is connected with this compression spring, is provided with and compresses the obstruction that spring contacts at the other end of centre bore.
Be provided with the quartz sand filler that quickens arc extinction in the described porcelain tube.
Adopted such scheme, the two ends of fusible link are connected with connecting plate on second pipe cap with first pipe cap respectively, by connecting plate, are convenient to fusible link is assembled.At least be provided with two fusible links in the described porcelain tube, arrange in the mode that is parallel to each other between these fusible links, when fusible link fuses, can between these fusible links, produce parallel electric arc, because these electric arcs have the branch of power, therefore, carefully come arc to quicken extinguishing of electric arc by thick electric arc branch.Fusible link is provided with the body of fluxing that fusing point is lower than this fusible link, this body of fluxing is the body of fluxing of metal, the fusing point of body is lower than the fusing point of fusible link owing to flux, therefore, before fusible link fusing, at first be the body fusing of fluxing, flux and be wrapped on the fusible link behind the body melt, the molecule between body and the fusible link of fluxing interpenetrates and forms the fusing point alloy lower than fusible link, helps accelerating fusible link fusing like this, cuts off circuit apace.
Connecting plate on described second pipe cap is provided with centre bore, and an end of this centre bore connects a sleeve pipe, is provided with the compression spring in the sleeve pipe, and at least one fusible link is connected with this compression spring, is provided with and compresses the obstruction that spring contacts at the other end of centre bore.Under normal condition,, make the compression spring keep compressive state by the tension of fusible link.After fusible link fusing, its tension disappears, and at this moment compresses spring generation elastic deformation, will stop up from centre bore to eject.Help the staff like this and find that early fusible link ruptures.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
In the accompanying drawing, 1 is porcelain tube, and 2 is first pipe cap, and 3 is second pipe cap, and 4 is fusible link, and 5 is connecting plate, and 6 are the body of fluxing, and 7 is sleeve pipe, and 8 are the compression spring, and 9 for stopping up.
Embodiment
With reference to Fig. 1, current limiting fuse of the present utility model, the two ends of porcelain tube 1 are connected with first pipe cap 2 and second pipe cap 3 of conduction.Fusible link 4 adopts copper to form, and fusible link 4 is arranged in the porcelain tube.First pipe cap 2 and second pipe cap 3 are provided with connecting plate 5, and the two ends of fusible link 4 are connected with connecting plate on second pipe cap with first pipe cap respectively.At least be provided with two fusible links 4 in the described porcelain tube 1, arrange in the mode that is parallel to each other between these fusible links.Fusible link 4 is provided with the body 6 of fluxing that fusing point is lower than this fusible link, this body body of fluxing for adopting tin to be made of fluxing.Connecting plate on described second pipe cap is provided with centre bore, and an end of this centre bore connects a sleeve pipe 7, is provided with compression spring 8 in the sleeve pipe, and at least one fusible link is connected with this compression spring, is provided with and compresses the obstruction 9 that spring contacts at the other end of centre bore.Be provided with the quartz sand filler that quickens arc extinction in the described porcelain tube.
Claims (3)
1. current limiting fuse, the two ends of porcelain tube are connected with first pipe cap and second pipe cap of conduction, fusible link is arranged in the porcelain tube, described first pipe cap and second pipe cap are provided with connecting plate, the two ends of fusible link are connected with connecting plate on second pipe cap with first pipe cap respectively, it is characterized in that: be provided with two fusible links in the described porcelain tube at least, arrange in the mode that is parallel to each other between these fusible links, fusible link is provided with the body of fluxing that fusing point is lower than this fusible link, and this body of fluxing is the body of fluxing of metal.
2. current limiting fuse according to claim 1, it is characterized in that: the connecting plate on described second pipe cap is provided with centre bore, one end of this centre bore connects a sleeve pipe, be provided with the compression spring in the sleeve pipe, at least one fusible link is connected with this compression spring, is provided with and compresses the obstruction that spring contacts at the other end of centre bore.
3. current limiting fuse according to claim 1 and 2 is characterized in that: be provided with the quartz sand filler that quickens arc extinction in the described porcelain tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206350133U CN201877382U (en) | 2010-12-01 | 2010-12-01 | Current-limiting fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206350133U CN201877382U (en) | 2010-12-01 | 2010-12-01 | Current-limiting fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201877382U true CN201877382U (en) | 2011-06-22 |
Family
ID=44165293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206350133U Expired - Fee Related CN201877382U (en) | 2010-12-01 | 2010-12-01 | Current-limiting fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201877382U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280451A (en) * | 2015-11-03 | 2016-01-27 | 大连理工大学 | Current-limiting fuse used for protecting ozone high-frequency discharge unit |
| CN112735929A (en) * | 2021-01-27 | 2021-04-30 | 史振军 | High-voltage fuse for oil field power transmission and transformation |
-
2010
- 2010-12-01 CN CN2010206350133U patent/CN201877382U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105280451A (en) * | 2015-11-03 | 2016-01-27 | 大连理工大学 | Current-limiting fuse used for protecting ozone high-frequency discharge unit |
| CN112735929A (en) * | 2021-01-27 | 2021-04-30 | 史振军 | High-voltage fuse for oil field power transmission and transformation |
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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: 20110622 Termination date: 20111201 |