CN203871294U - Drop-out fuse with stable structure - Google Patents
Drop-out fuse with stable structure Download PDFInfo
- Publication number
- CN203871294U CN203871294U CN201420311787.9U CN201420311787U CN203871294U CN 203871294 U CN203871294 U CN 203871294U CN 201420311787 U CN201420311787 U CN 201420311787U CN 203871294 U CN203871294 U CN 203871294U
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- China
- Prior art keywords
- fuse
- support frame
- resistance
- fixed
- ratchet mechanism
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Abstract
The utility model discloses a drop-out fuse with a stable structure. The drop-out fuse comprises a porcelain insulator, a fuse tube and an upper support frame and a lower support frame which are respectively fixed to two ends of the porcelain insulator. A connection support is fixed to the upper support frame. One end of the fuse tube is movably connected with the lower support frame and the other end successively passes through a second fuse wire, a resistor and a first fuse wire to be connected with the connection support. A ratchet mechanism is fixed to the lower support frame. A drive swing rod of the ratchet mechanism is fixed to the fuse tube. Two ends of the resistor are connected to a fusing alarm device. The drop-out fuse has advantages as follows: the structure of the drop-out fuse is stable; the fuse tube will not rebound after falling off and the structure is simple; and the drop-out fuse has a fusing alarm function such that it is convenient for maintenance personnel to judge a fusing branch.
Description
Technical field
The utility model relates to electric power system electric circuit protection equipment field, particularly, relates to a kind of constitutionally stable fuse switch.
Background technology
fuse switch is the modal a kind of protective switch of the short circuit of 10KV distribution line branch line and distribution transformer, and 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, is used inconvenience is installed.It falls by potential energy of cartridge fuse, and when cartridge fuse falls, because one end of cartridge fuse is flexibly connected, its lower backwardness meeting be upspring, then declines-upspring, until potential energy is exhausted.Between 3-9KG not etc., its cartridge fuse in continuous upper and lower process has very strong pulling force to branch road of living in to its quality of existing fuse, causes the burden of branch road.And in actual utilization, when environment is darker, for example in remote rural area, when 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 be to provide a kind of Stability Analysis of Structures, cartridge fuse can resilience after falling and simple in structure, there is blow alarm and be convenient to the fuse switch that maintenance personal judges fusing branch road.
The technical scheme in the invention for solving the above technical problem is:
A kind of constitutionally stable fuse switch, comprise porcelain insulator, cartridge fuse and be separately fixed at upper support frame and the lower support frame at porcelain insulator two ends, on described upper support frame, be fixed with connection bracket, one end of described cartridge fuse is movably connected on lower support frame and the other end is connected with connection bracket with the first fuse by the second fuse, resistance successively, on described lower support frame, be fixed with ratchet mechanism, the active fork of described ratchet mechanism is fixed on cartridge fuse, and the two ends of described resistance are connected on blow alarm device.
As preferably, described blow alarm device comprises electromagnetic relay, the two ends of the coil of described electromagnetic relay are connected with resistance two ends respectively, the armature of described electromagnetic relay is connected on the positive pole of power supply, the negative pole of described power supply is connected with light-emitting diodes tube cathode, the anodic bonding of described light-emitting diode is on the fixed contact of electromagnetic relay, and described fixed contact is positioned at the top of armature.
As preferably, the resistance of described resistance is greater than 0.5M ohm and is less than 1M ohm.
As preferably, described ratchet mechanism is tooth ratchet mechanism.
To sum up, the beneficial effects of the utility model are:
1, the first fuse of the present utility model and the second fuse are after fusing, and cartridge fuse falls, because cartridge fuse is connected on ratchet mechanism, make the cartridge fuse can only single-way moving, cartridge fuse can resilience after falling, and reduces the pulling force to branch road, be Stability Analysis of Structures, reduce the burden of branch road.
2, the first fuse of the present utility model and the second fuse are after fusing, and blow alarm device is alarm, and maintenance personal just can judge there is the branch road of overload or short circuit according to blow alarm device, be convenient to maintenance personal's maintenance.
3, of the present utility model simple in structure, easy operating.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the circuit diagram of blow alarm device of the present utility model.
Mark and corresponding parts title in accompanying drawing: 11, upper support frame; 12, lower support frame; 2, connection bracket; 31, the first fuse; 32, the second fuse; 4, resistance; 5, cartridge fuse; 6, ratchet mechanism; 61, active fork; 7, blow alarm device; 71, electromagnetic relay; 72, power supply; 73, fixed contact.
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 constitutionally stable fuse switch as shown in Figure 1, comprise porcelain insulator, cartridge fuse 5 and the upper support frame 11 and the lower support frame 12 that are separately fixed at porcelain insulator two ends, on described upper support frame 11, be fixed with connection bracket 2, one end of described cartridge fuse 5 is movably connected on lower support frame 12 and the other end passes through the second fuse 32 successively, resistance 4 is connected with connection bracket 2 with the first fuse 31, on described lower support frame 12, be fixed with ratchet mechanism 6, the active fork of described ratchet mechanism 6 is fixed on cartridge fuse 5, the two ends of described resistance 4 are connected on blow alarm device 7.
In the present embodiment, fuse switch is connected on 10KV distribution line branch line.During normal work, blow alarm device 7 is not worked.When overload or short circuit appear in fuse switch subcircuits of living in, the electric current in branch road is excessive, and the heat increase on the first fuse 31 and the second fuse 32 disconnects the first fuse 31 and the second fuse 32, and branch road disconnects, and completes the defencive function to circuit.Now, cartridge fuse is because falling one end that gravitional force is connected with the second fuse, owing to being connected with ratchet mechanism on cartridge fuse, make the cartridge fuse can resilience, the moving direction that is cartridge fuse is unidirectional, the pulling force of avoiding the continuous resilience of cartridge fuse to cause branch road circuit, strengthens the stability of branch road and fuse.After the first fuse 31 and the second fuse 32 disconnect, on resistance, do not have electric current to flow through, make blow alarm device start alarm, be convenient to attendant and judge there is the branch road of short circuit or overload, be convenient to personnel's maintenance.Ratchet mechanism, it is by active fork, ratchet, ratchet, check pawl and frame form, and it will rotate continuously or reciprocating motion converts unidirectional step motion to.The present embodiment mainly utilizes the one-way of ratchet mechanism to control the moving direction of cartridge fuse, and it is simple in structure, easy operating.
Embodiment 2:
A kind of constitutionally stable fuse switch as depicted in figs. 1 and 2, the present embodiment is on the basis of embodiment 1, blow alarm device 7 is carried out to refinement, be that blow alarm device 7 comprises electromagnetic relay 71, the two ends of the coil of described electromagnetic relay 71 are connected with resistance 4 two ends respectively, the armature of described electromagnetic relay 71 is connected on the positive pole of power supply 72, the negative pole of described power supply 72 is connected with light-emitting diodes tube cathode, the anodic bonding of described light-emitting diode is on the fixed contact 73 of electromagnetic relay 71, and described fixed contact 73 is positioned at the top of armature.
In the present embodiment, when there is not overload or short-circuit state in branch road of living in, while having electric current to flow through on resistance, electromagnetic relay 71 is normally worked, and now, the magnet of electromagnetic relay 71 plays adhesive effect to armature, armature presses down with quiet contact point 73 and does not contact, and now warning circuit is not worked.When overload or short-circuit state appear in branch road of living in, the first fuse 31 and the second fuse 32 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 73, 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.Whole circuit structure is simple, is easy to realize.
Embodiment 3:
A kind of constitutionally stable fuse switch as depicted in figs. 1 and 2, the present embodiment is on the basis of above-described embodiment, and in order to reduce circuit load, the resistance of described resistance 4 is greater than 0.5M ohm and 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; But if resistance is too small, the electric current that makes to flow through resistance is excessive, easily blow alarm device is damaged, and considers, and resistance is greater than 0.5M ohm and is less than 1M ohm.
Embodiment 4:
A kind of constitutionally stable fuse switch as depicted in figs. 1 and 2, the present embodiment is on the basis of above-described embodiment, and described ratchet mechanism 6 is tooth ratchet mechanism.Tooth ratchet mechanism simple in structure, easily manufactured, transmission accuracy is high; The time ratio that moves and stop can be by selecting suitable driving mechanism to realize.
In use, can adopt resistance is the resistance 9 of 0.7 M ohm to the utility model, and power supply 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 constitutionally stable fuse switch, comprise porcelain insulator, cartridge fuse (5) and be separately fixed at upper support frame (11) and the lower support frame (12) at porcelain insulator two ends, it is characterized in that: on described upper support frame (11), be fixed with connection bracket (2), one end of described cartridge fuse (5) is movably connected in lower support frame (12) above and the other end passes through the second fuse (32) successively, resistance (4) is connected with connection bracket (2) with the first fuse (31), on described lower support frame (12), be fixed with ratchet mechanism (6), the active fork of described ratchet mechanism (6) is fixed on cartridge fuse (5), the two ends of described resistance (4) are connected on blow alarm device (7).
2. a kind of constitutionally stable fuse switch according to claim 1, it is characterized in that: described blow alarm device (7) comprises electromagnetic relay (71), the two ends of the coil of described electromagnetic relay (71) are connected with resistance (4) two ends respectively, the armature of described electromagnetic relay (71) is connected on the positive pole of power supply (72), the negative pole of described power supply (72) is connected with light-emitting diodes tube cathode, the anodic bonding of described light-emitting diode is on the fixed contact (73) of electromagnetic relay (71), described fixed contact (73) is positioned at the top of armature.
3. a kind of constitutionally stable fuse switch according to claim 1, is characterized in that: the resistance of described resistance (4) is greater than 0.5M ohm and is less than 1M ohm.
4. according to the arbitrary described a kind of constitutionally stable fuse switch of claims 1 to 3, it is characterized in that: described ratchet mechanism (6) is tooth ratchet mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311787.9U CN203871294U (en) | 2014-06-12 | 2014-06-12 | Drop-out fuse with stable structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311787.9U CN203871294U (en) | 2014-06-12 | 2014-06-12 | Drop-out fuse with stable structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203871294U true CN203871294U (en) | 2014-10-08 |
Family
ID=51652219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420311787.9U Expired - Fee Related CN203871294U (en) | 2014-06-12 | 2014-06-12 | Drop-out fuse with stable structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203871294U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037034A (en) * | 2014-06-12 | 2014-09-10 | 国网四川省电力公司双流县供电分公司 | Falling type fuse with stable structure |
-
2014
- 2014-06-12 CN CN201420311787.9U patent/CN203871294U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104037034A (en) * | 2014-06-12 | 2014-09-10 | 国网四川省电力公司双流县供电分公司 | Falling type fuse with stable structure |
| CN104037034B (en) * | 2014-06-12 | 2016-03-23 | 国网四川省电力公司双流县供电分公司 | A kind of constitutionally stable fuse switch |
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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 |