CN203871295U - Drop-out fuse - Google Patents
Drop-out fuse Download PDFInfo
- Publication number
- CN203871295U CN203871295U CN201420311788.3U CN201420311788U CN203871295U CN 203871295 U CN203871295 U CN 203871295U CN 201420311788 U CN201420311788 U CN 201420311788U CN 203871295 U CN203871295 U CN 203871295U
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- CN
- China
- Prior art keywords
- fuse
- resistance
- electromagnetic relay
- support chip
- fixed
- 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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Abstract
The utility model discloses a drop-out fuse which comprises a porcelain insulator and a fuse tube. Two ends of the porcelain insulator are respectively fixed to an upper support chip and a lower support chip. The upper support chip and the lower support chip are respectively fixed to an upper connecting piece and a lower connecting piece. The bottom of the upper support chip is connected with a connection support. The drop-out fuse also comprises a resistor, two ends of which are respectively connected with the connection support and an upper end of the fuse tube through a first fuse wire and a second fuse wire. A lower end of the fuse tube is movably connected to the lower support chip. Two ends of the resistor are connected with a fusing alarm device. A hook is fixed to the fuse tube. The utility model has advantages as follows: the drop-out fuse has a simple structure, is convenient to install and operate and can give an alarm during fusing such that personnel can maintain.
Description
Technical field
The utility model relates to electric power system electric circuit protection equipment field, specifically, relates to a kind of fuse switch.
Background technology
the modal a kind of protective switch of the short circuit of 10KV distribution line branch line and distribution transformer when fuse switch, it has the features such as economy, easy to operate, adaptation outdoor environment is strong.Fuse switch is arranged on 10KV distribution line branch line, can effectively dwindle power failure range.Existing fuse switch, its most complex structure, uses inconvenience is installed.And in actual utilization, when environment is darker, for example in remote rural area, in the time that disconnecting appears in fuse, operating personnel can not well judge which branch goes wrong, and its maintenance and repair is very inconvenient.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of simple in structure, fitting operation convenient and can be in the time of fusing alarm so that the fuse switch of personnel's maintenance.
The technical scheme in the invention for solving the above technical problem is:
A kind of fuse switch, comprise porcelain insulator and cartridge fuse, described porcelain insulator two ends are fixed with respectively support chip and lower support sheet, on described upper support chip and lower support sheet, be fixed with respectively upper connector and lower connector, described upper support chip bottom is connected with connection bracket, also comprise resistance, the two ends of described resistance are connected with the upper end of connection bracket and cartridge fuse with the second fuse by the first fuse respectively, the lower end of described cartridge fuse is movably connected on lower support sheet, the two ends of described resistance are connected on blow alarm device, on described cartridge fuse, be fixed with hook.
As preferably, described blow alarm device comprises electromagnetic relay and is connected to the warning circuit on electromagnetic relay contact, the two ends of the coil of described electromagnetic relay are connected to the two ends of resistance, described warning circuit comprises power supply and light-emitting diode, the positive pole of described power supply is connected with the armature of electromagnetic relay, the negative electrode of described light-emitting diode be connected with the negative pole of power supply and anodic bonding on the fixed contact of electromagnetic relay, described fixed contact is positioned at the top of armature.
Further, on described porcelain insulator, be provided with fixture.
Further, the resistance of described resistance R 1 is less than 1M ohm.
To sum up, the beneficial effects of the utility model are:
1, the utility model comprises that support chip, connector, connection bracket, fuse realize the connection of porcelain insulator and cartridge fuse, and it is simple in structure, and fitting operation is convenient.
2, the utility model utilizes blow alarm device to monitor the situation of fuse, and excessive when circuit, fuse disconnects, and blow alarm device starts alarm, is convenient to personnel's maintenance.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the circuit diagram of the utility model blow alarm device.
Mark and corresponding parts title in accompanying drawing: 1, porcelain insulator; 11, fixture; 21, upper support chip; 22, lower support sheet; 31, upper connector; 32, lower connector; 4, connection bracket; 5, blow alarm device; 51, electromagnetic relay; 52, power supply; 53, fixed contact; 6, cartridge fuse; 7, hook; 81, the first fuse; 82, the second fuse; 9, resistance.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is done to detailed description further, but execution mode of the present utility model is not limited to this.
Embodiment 1:
A kind of fuse switch as shown in Figure 1, comprise porcelain insulator 1 and cartridge fuse 6, described porcelain insulator 1 two ends are fixed with respectively support chip 21 and lower support sheet 22, on described upper support chip 21 and lower support sheet 22, be fixed with respectively upper connector 31 and lower connector 32, described upper support chip 21 bottoms are connected with connection bracket 4, also comprise resistance 9, the two ends of described resistance 9 are connected with the upper end of cartridge fuse 6 with connection bracket 4 with the second fuse 82 by the first fuse 81 respectively, the lower end of described cartridge fuse 6 is movably connected on lower support sheet 22, the two ends of described resistance 9 are connected on blow alarm device 5, on described cartridge fuse 6, be fixed with hook 7.
In the present embodiment, fuse switch is connected on 10KV distribution line branch line, cartridge fuse 6, the first fuse 81 and the second fuse 82 are connected in 10KV circuit, hook can tentatively be fixed cartridge fuse 6, avoid cartridge fuse 6 too large to the pulling force of the first fuse 81 and the second fuse 82, whole system is in poised state.When overload or short circuit appear in circuit, the electric current in Circuits System is excessive, and the heat increase on the first fuse 81 and the second fuse 82 disconnects the first fuse 81 and the second fuse 82; now; the second fuse 82 disconnects with cartridge fuse 6, and branch road disconnects, the defencive function of completing circuit.Because hook can tentatively be fixed cartridge fuse 6, after the second fuse 82 disconnects with cartridge fuse 6, cartridge fuse can not fall suddenly, fall to reduce cartridge fuse the pulling force that lower support sheet is caused suddenly, strengthen the structural stability of whole fuse, its total is simple, and fitting operation is convenient.After the first fuse 81 and the second fuse 82 disconnect, do not have electric current to flow through on resistance, blow alarm device starts to report to the police, and is convenient to attendant the branch road that occurs short circuit or overload is judged, is convenient to personnel's maintenance.
Embodiment 2:
A kind of fuse switch as depicted in figs. 1 and 2, the present embodiment carries out refinement to blow alarm device on the basis of embodiment 1, be that blow alarm device comprises electromagnetic relay 51 and is connected to the warning circuit on electromagnetic relay 51 contacts, the two ends of the coil of described electromagnetic relay 51 are connected to the two ends of resistance 9, described warning circuit comprises power supply 52 and light-emitting diode, the positive pole of described power supply 52 is connected with the armature of electromagnetic relay 51, the negative electrode of described light-emitting diode be connected with the negative pole of power supply 52 and anodic bonding on the fixed contact 53 of electromagnetic relay 51, described fixed contact 53 is positioned at the top of armature.
In the present embodiment, in the time that circuit is normally worked, be that branch road of living in does not occur overload or when short-circuit state, on resistance, there is electric current, electromagnetic relay 51 is normally worked, and now, the magnet of electromagnetic relay 51 plays adhesive effect to armature, armature does not contact with quiet contact point, and now warning circuit is not worked.In the time that overload or short-circuit state appear in branch road of living in, the first fuse 81 and the second fuse 82 disconnect, and now, on resistance, electric current is 0, and magnet disappears to the attraction of armature, and armature raises up and contacts with quiet contact point, and warning circuit is started working.Light-emitting diode is lit, and now, staff can be which branch road goes wrong according to the light on and off judgement of light-emitting diode, is convenient to personnel it is keeped in repair.
Embodiment 3:
A kind of fuse switch as depicted in figs. 1 and 2, fixing for the ease of to porcelain insulator, reduces the load of porcelain insulator to circuit, on described porcelain insulator 1, is provided with fixture 11.
Embodiment 4:
A kind of fuse switch as depicted in figs. 1 and 2, in order to reduce load, the resistance of described resistance 9 is less than 1M ohm.Resistance provides electric current for blow alarm device, and it is also the load of branch road, and load is excessive, and power consumption is large, and the resistance of resistance R 1 is less than 1M ohm.
In use, can adopt resistance is the resistance 9 of 0.5 M ohm to the utility model, and power supply 52 can adopt the battery of 3.7V, and it is that the diode of 3.0-3.2V is realized whole device that light-emitting diode can adopt pressure drop.Power supply provides conduction voltage drop for light-emitting diode.
As mentioned above, can realize preferably the utility model.
Claims (4)
1. a fuse switch, comprise porcelain insulator (1) and cartridge fuse (6), it is characterized in that: described porcelain insulator (1) two ends are fixed with respectively support chip (21) and lower support sheet (22), on described upper support chip (21) and lower support sheet (22), be fixed with respectively upper connector (31) and lower connector (32), described upper support chip (21) bottom is connected with connection bracket (4), also comprise resistance (9), the two ends of described resistance (9) are connected with the upper end of cartridge fuse (6) with connection bracket (4) with the second fuse (82) by the first fuse (81) respectively, the lower end of described cartridge fuse (6) is movably connected on lower support sheet (22), the two ends of described resistance (9) are connected on blow alarm device (5), on described cartridge fuse (6), be fixed with hook (7).
2. a kind of fuse switch according to claim 1, it is characterized in that: described blow alarm device comprises electromagnetic relay (51) and is connected to the warning circuit on electromagnetic relay (51) contact, the two ends of the coil of described electromagnetic relay (51) are connected to the two ends of resistance (9), described warning circuit comprises power supply (52) and light-emitting diode, the positive pole of described power supply (52) is connected with the armature of electromagnetic relay (51), the negative electrode of described light-emitting diode be connected with the negative pole of power supply (52) and anodic bonding on the fixed contact (53) of electromagnetic relay (51), described fixed contact (53) is positioned at the top of armature.
3. a kind of fuse switch according to claim 1 and 2, is characterized in that: on described porcelain insulator (1), be provided with fixture (11).
4. a kind of fuse switch according to claim 2, is characterized in that: the resistance of described resistance R 1 is less than 1M ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311788.3U CN203871295U (en) | 2014-06-12 | 2014-06-12 | Drop-out fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311788.3U CN203871295U (en) | 2014-06-12 | 2014-06-12 | Drop-out fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203871295U true CN203871295U (en) | 2014-10-08 |
Family
ID=51652220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420311788.3U Expired - Fee Related CN203871295U (en) | 2014-06-12 | 2014-06-12 | Drop-out fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203871295U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037033A (en) * | 2014-06-12 | 2014-09-10 | 国网四川省电力公司双流县供电分公司 | Drop-out fuse |
-
2014
- 2014-06-12 CN CN201420311788.3U patent/CN203871295U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037033A (en) * | 2014-06-12 | 2014-09-10 | 国网四川省电力公司双流县供电分公司 | Drop-out fuse |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20200612 |