CN2842714Y - Outdoor high-voltage dropping-type fuse - Google Patents
Outdoor high-voltage dropping-type fuse Download PDFInfo
- Publication number
- CN2842714Y CN2842714Y CN 200520045332 CN200520045332U CN2842714Y CN 2842714 Y CN2842714 Y CN 2842714Y CN 200520045332 CN200520045332 CN 200520045332 CN 200520045332 U CN200520045332 U CN 200520045332U CN 2842714 Y CN2842714 Y CN 2842714Y
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- fuse
- main
- main fuse
- auxiliary
- subsidiary
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Abstract
The utility model relates to an outdoor high-voltage falling type fuse which comprises a main fuse, a subsidiary fuse of which the circuit is connected with a circuit of the main fuse in parallel, and a switching mechanism which is connected between the main fuse and the subsidiary fuse and can reclose when a main fuse carrier falls. When the utility model is under a normal operating condition, the main fuse is switched on and is under an operating condition, the switching mechanism is switched off, and the subsidiary fuse is under a back-up condition. When a system is out of action, the main fuse breaks, and the switching mechanism is switched on, and the subsidiary fuse is switched on and is under an operating condition. At this time, if the system failure is temporary, the subsidiary fuse continues to work until a loop is switched to the running status of the main fuse again; if the system failure is permanent, the subsidiary fuse breaks again; at this time, the system stops running. The utility model can provide the most elementary one-time coincidence function for an overhead line in 10KV through simple structure and low cost; as a consequence, the utility model reduces deciduous power-off accidents and assures the running quality of overhead distribution networks.
Description
Technical field
The utility model relates to a kind of outdoor high-voltage fuse, specifically refers to be used for the outdoor high-voltage drop type fuse of overhead distribution net.
Background technology
Fuse is a kind of protection equipment that the protection electric equipment is avoided short circuit, overload infringement.As shown in Figure 1, fuse comprises fuse base 11 and fusing carrier 12.Its operation principle is when line short or overload, melt in the fuse fusing carrier 12 is melted formation electric arc, and at the drop-down long arc of the effect of elastic body, high arc temperature makes the inner aerogenesis medium of fusing carrier resolve into gas simultaneously, in the fusing carrier pipe, set up very high pressure, free metal gas bleed pipe is made arc extinction outward, thereby cut-off short circuit current.
Current in the construction and transformation of city overhead distribution net, in order to improve power supply reliability, to prevent power failure, just progressively radiation shape supply network is transform as " handing in hand " ring network power supply open loop mode of operation.Yet the power failure area is big, long defective of time restores electricity owing to exist after the action of traditional fuse, therefore when running into the impermanency system failure, adopted automatic recloser as an alternative, it is according to predetermined cut-offfing and the coincidence order, in the AC distribution circuit, cut-off automatically and overlap operation, then automatically reset, the separating brake locking, need not the additional operations power supply, can repeatedly cut-off and overlap operation automatically, can significantly improve power supply continuity, dwindle the power failure area in the certain limit, shorten interruption duration, reduced the possibility of device damage.Its defective is that economy is relatively poor, and manufacturing cost is quite high, is generally tens of times price of traditional fuse.
The utility model content
The utility model aims to provide a kind of outdoor high-voltage drop type fuse that can realize the reclosing function with low cost, thereby when satisfying economy, reduces the power cut-off rate of impermanency fault, improves power supply reliability.
A kind of outdoor high-voltage drop type fuse provided by the utility model, comprise main fuse, fusing carrier is characterized in that: it also comprises: one with described main fuse forming circuit auxiliary fuse in parallel, and one be connected between described main fuse and the auxiliary fuse and carry out the switching mechanism of reclosing when described main fusing carrier fall.
In above-mentioned outdoor high-voltage drop type fuse, comprise that also a mounting panel and constitutes the terminal block that described main fuse and auxiliary fuse are electrically connected, described main fuse and auxiliary fuse are to carry out fixed-site by main fuse seat and auxiliary fuse seat that this terminal block and mounting panel are connected them respectively.
In above-mentioned outdoor high-voltage drop type fuse, switching mechanism comprises switching and obstructs, connects contact and contact the touch base that is connected that mates with this contact, wherein: an end of switching stalk, connection contact is fixed on the main fuse seat by a pivot pin, the other end of switching stalk is fixed on the bottom of falling of the main fusing carrier that articulates with described main fuse seat, connects touch base and is fixed on the auxiliary fuse seat.
Adopted above-mentioned technical solution,, by the fuse parallel connection, and both operating states can have been changed, thereby reach the function of reclosing by switching mechanism promptly according to the working mechanism of automatic reclosing device.The utility model is under normal operating condition, and main fuse is connected, and in running order, switching mechanism then is in the separating brake position, and auxiliary fuse is in backup status.When system broke down, main fuse cut-off, and fusing carrier falls, and switching mechanism then falls to close a floodgate under the effect that produces kinetic energy at fusing carrier and puts in place, makes the auxiliary fuse connection, enters operating state.At this moment, if the system failure is temporary, then auxiliary fuse works on (being called the reclosing success) till the loop is switched to the main fuse operation again; If the system failure is nonvolatil, then auxiliary fuse once cut-offs (being called unsuccessful reclosing) again, and at this moment system is out of service.The utility model is with simple version, and cheap cost can be the 10KV overhead transmission line the most basic once coincidence function is provided, thereby reduces the impermanency loss of power accident, guarantees the running quality of overhead distribution net.
Description of drawings
Fig. 1 is the structural representation of traditional outdoor high-voltage drop type safety fuse;
Fig. 2 is switching mechanism separating brake position view when main fuse is connected in the utility model;
Fig. 3 is switching mechanism closing position schematic diagram when main fuse disconnects in the utility model.
Embodiment
As Fig. 2～3 is two kinds of operating states of outdoor high-voltage drop type fuse for the utility model.
The utility model comprises main fuse, auxiliary fuse and switching mechanism 2.
This main fuse comprises main fusing carrier 12, main fuse seat 11; This auxiliary fuse comprises auxilliary fusing carrier 32, auxiliary fuse seat 31.
Main fuse is in parallel with the auxiliary fuse forming circuit.
Switching mechanism 2 is connected between main fuse and the auxiliary fuse and carries out reclosing when the main fusing carrier 12 of main fuse falls.
Switching in the switching mechanism 2 stalk 21, the end that connects contact 22 are fixed on the main fuse seat 11 by a pivot pin, and the other end of switching stalk is fixed on the bottom of falling of the main fusing carrier 12 that articulates with described main fuse seat 11.
Operation principle of the present invention:
When electrical network normally in service, switching in the switching mechanism 2 stalk 21 upwards connects contact 22 and is connected touch base 23 separating brake positions, main fuse 1 connection is in running order, auxiliary fuse 3 is with high voltages but no current is in backup status.When line fault, main fuse 1 is carried out and is once cut-off, and switches stalk 21 and then falls under the effect that produces kinetic energy at main fusing carrier 12 and rotate, and makes to connect contact 22 and put in place with being connected touch base 23 combined floodgates, and auxiliary fuse 3 connections enter operating state.At this moment, if the system failure is temporary, eliminate, then auxiliary fuse 3 works on (being called the reclosing success) till the loop is switched to main fuse 1 operation again.If the system failure is nonvolatil, do not eliminate yet, then auxiliary fuse 3 is carried out and is once cut-off (being called unsuccessful reclosing), and at this moment system is out of service.Thereby the continuity of system's operation and the reliability of power supply have been guaranteed.
Claims (3)
1, a kind of outdoor high-voltage drop type fuse comprises a main fuse, and this main fuse comprises main fusing carrier, main fuse seat, and it is characterized in that: it also comprises:
1) one with described main fuse forming circuit auxiliary fuse in parallel, and
2) one be connected between described main fuse and the auxiliary fuse and when described main fusing carrier falls, carry out the switching mechanism of reclosing.
2. outdoor high-voltage drop type fuse according to claim 1, it is characterized in that: it comprises that also a mounting panel and constitutes the terminal block that described main fuse and auxiliary fuse are electrically connected, and described main fuse and auxiliary fuse are to carry out fixed-site by main fuse seat and auxiliary fuse seat that this terminal block and mounting panel are connected them respectively.
3. outdoor high-voltage drop type fuse according to claim 1 and 2, it is characterized in that: described switching mechanism comprises switching and obstructs, connects contact and contact the touch base that is connected that mates with this contact, wherein: an end of switching stalk, connection contact is fixed on the main fuse seat by a pivot pin, the other end of switching stalk is fixed on the bottom of falling of the main fusing carrier that articulates with described main fuse seat, connects touch base and is fixed on the auxiliary fuse seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520045332 CN2842714Y (en) | 2005-09-27 | 2005-09-27 | Outdoor high-voltage dropping-type fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520045332 CN2842714Y (en) | 2005-09-27 | 2005-09-27 | Outdoor high-voltage dropping-type fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2842714Y true CN2842714Y (en) | 2006-11-29 |
Family
ID=37446591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520045332 Expired - Fee Related CN2842714Y (en) | 2005-09-27 | 2005-09-27 | Outdoor high-voltage dropping-type fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2842714Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101600596B (en) * | 2007-02-06 | 2012-03-21 | 西门子公司 | Device for recognising a mechanical defect in a wire of an overhead line |
-
2005
- 2005-09-27 CN CN 200520045332 patent/CN2842714Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101600596B (en) * | 2007-02-06 | 2012-03-21 | 西门子公司 | Device for recognising a mechanical defect in a wire of an overhead line |
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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: 20061129 Termination date: 20100927 |