CN2261629Y - Acoustic and optic alarm for fuse break-off and emergent switching-on device - Google Patents

Abstract

The utility model relates to an acoustic and optic alarm for fuse break-off and emergent switching-on device which comprises an acoustic and optic alarm circuit and an emergency switching-on circuit, wherein, the acoustic and optic alarm circuit comprises an alarm lamp, a resistor, a triode and a buzzer which are combined by connection in series; the acoustic and optic alarm circuit is connected in parallel with the both ends of the live wire or the zero line by an upper lead wire and a lower lead wire; when the fuse is broken off, the power supply voltage is added to the acoustic and optic alarm circuit by load, generating acoustic and optic alarm; a spare fuse in the emergency switching-on circuit is connected to the fuse break-off in parallel after the unidirectional selection of a double-pole double-throw switch to replace the fuse break-off working continuously, and the acoustic and optic alarm disappears afterwards.

Description

A kind of sound and light alarm of fuse fracture of wire and emergent switching device

The utility model relates to a kind of sound and light alarm and emergent switching device of all kinds of power fuse fracture of wires, is specially adapted to the sound and light alarm of family, factory, 220 volts or 380 volts power fuses of unit and the device of emergent switching.

A kind of in the prior art " novel household panel box ", power supply are one tunnel inputs, multichannel output, and the fuse fracture of wire adopts luminous warning.Because power supply is multichannel output, do not adopt acoustic alarm, the outage of usually a certain road can not be realized (as refrigerator circuit), after finding in to be used, open panel box, fuse stubble warning device lamp is bright, but (had only old man, women, child to be at that time) for a certain reason, can not change fuse, make that road power supply to use, influence people's normal life.Moreover this panel box is convenient by dress in newly constructed house, uses just cumbersome in existing house.

The purpose of this utility model be for overcome above-mentioned shortcoming custom-designed a kind of simple, practical, by the sound and light alarm of convenient, the safe fuse fracture of wire of dress and the device of emergent switching.The various devices that the utility model is produced on demand, the distribution facility that generally is suitable for family, factory, unit (office building, dormitory etc.), avoided because the fracture of wire of a certain fuse and the trouble of in numerous fuses, looking for, after having avoided needing certain road power fuse fracture of wire of non-stop run, long-time possibility of not realizing avoided can't changing immediately behind certain fuse fracture of wire and caused the oversize inconvenience of taking the lead of power-off time and lose.

Above-mentioned goal of the invention is achieved through the following technical solutions.A kind of sound and light alarm of fuse fracture of wire and emergent switching device include a sound light alarming circuit, and an emergent built-up circuit is formed.Include alarm lamp, resistance, triode and hummer that the serial connection form is formed in the sound light alarming circuit, be attempted by the two ends of live wire or zero line fuse by lead-in wire on it and following lead-in wire.When the fuse fracture of wire, supply voltage is added on the sound light alarming circuit by load, and sound and light alarm takes place.Spare fuse in the emergent built-up circuit after the unidirectional selection by double-point double-throw switch, is connected in parallel on the fracture of wire fuse, replaces the fracture of wire fuse to work on, and sound and light alarm disappears thereupon.Sound light alarming circuit and emergent built-up circuit can be incorporated in one overall in.

Embodiment below with reference to drawings attached is described in detail the utility model:

Fig. 1 is for pressing a preferred embodiment synoptic diagram of the present utility model

Fig. 2 is the principle schematic of sound and light alarm in this device

Fig. 3 is a preferred embodiment schematic appearance of the present utility model

Among Fig. 1, this device totally marks with 11, and inserts power circuit.220 volts of AC power, enter ammeter 2 by live wire 1 and zero line 10, through plug-in strip 3 and live wire fuse 4 and zero line fuse 41, the four-way power supply of reallocating out, each road power supply is established fuse 4 and 41, and it is overall 11 to install the utility model device additional, through behind the automatic switch of electric leakage 9, uses for each road load 20 (as air-conditioning, refrigerator, electric cooker and light fixture etc.).This installs overall 11 two 12 and two lead-in wires 13 down that upward go between, the upper and lower lead-in wire of homonymy, and 12,13 also press at the fuse 4 of homonymy or 41 two ends (as Fig. 1).According to principles of electric and electronic engineering analysis; because live wire 1 is a noble potential; zero line 10 is electronegative potentials; heavy current impact at first be live wire fuse 4; and other all parts; to be effectively protected, the fuse of our fracture of wire often seen the in daily life reason place of live wire fuse 4 always just is just at a lot of occasion (as railway signal power supply) zero line fuse 41 omissible reason places.Certainly, the material problem of fuse itself, perhaps fire, zero fuse can cause the fracture of wire of zero line fuse 41 by adorning diversified in specifications causing, but the generation of fire, zero fuse while fracture of wire in circuit is impossible basically.Since the fuse fracture of wire illustrates it is (as short circuit, power is excessive or the like) that load 20 causes certainly in circuit.As shown in Figure 2, when live wire fuse 4 fracture of wires, supply voltage by zero line 10 and zero line fuse 41, reaches lead-in wire 13 down through overload 20 by live wire 1 and last lead-in wire 12 again, is added to the two ends of sound light alarming circuit 23.Equally, when zero line fuse 41 fracture of wires, the sound light alarming circuit 23 of zero line fuse is reported to the police by acquisition supply voltages such as live wire fuse 4 and loads 20.This sound light alarming circuit 23 forms (as Fig. 2) by alarm lamp 5, resistance 6, triode 8 and hummer 7 serial connections.Alarm lamp 5 can be used neon brightness pipe, alternating-current light emitting diode or bezel bubble etc., the correct selection of resistance 6 resistances of process serial connection makes this circuit that a very little working current be arranged, use through the reasonable serial connection of triode again, make hummer obtain normal marking current and sounding.Load 20 is serially connected in the warning circuit 23, and the operate as normal of warning circuit 23 is had no effect.For example, load 20 is with 8 watts to 5 kilowatts calculating, and the internal resistance of that load 20 is 6K to 0.01K.But resistance value is complete operate as normal (if alarm lamp 5 usefulness neon brightness pipes) in 100K ± 15K scope, and therefore, the serial connection of load 20 is had no effect to warning circuit 23.

After considering the fuse fracture of wire, can't change for a certain reason at once, but press for the actual conditions that continue to use this power supply, this installs and has made emergent built-up circuit 24 (frame of broken lines is interior among Fig. 3) in overall 11 especially, this circuit has spare fuse 42, connecting line 32 and double-point double-throw switch 31,14,15 combine (as Fig. 1), when switch 31 is flat in the centre position, with 14,15 do not contact, when certain side generation sound and light alarm, this side fuse fracture of wire is described, as long as with 31 groups on switch to an end that sends sound and light alarm, (dialling to 14 during as live wire fuse 4 fracture of wires, is that zero line is dialled to 15 when being melt into 41 fracture of wires), by last lead-in wire 12 and following lead-in wire 13, spare fuse 42 just is connected in parallel on the fuse of fracture of wire, replaces the fracture of wire fuse to work on, so, reporting to the police disappears, and power supply is in again in the normal power supply state.

The utility model is convenient by dress, if with upper and lower lead-in wire be attempted by respectively fire, the two ends of fuse.The panel box that not only is suitable for newly constructed house uses, and joins but also be suitable for existing increasing of house power supply.Resistance 6 in this device is applicable to the use of various power of alterating and direct current fuses as long as do to be fit to adjust.The fuse of three-phase supply be appropriate to too this device by dress.

The utility model has been done detailed explanation with by way of example, but this explanation and diagram be not to there being novel being construed as limiting in fact, can make various modifications and improvement those skilled in the art by design of the present utility model, but these ones can not exceed the spiritual scope of the utility model claim defined.

The utility model has been realized the sound and light alarm of fuse fracture of wire and the effect of emergent switching, has avoided rapidly, in time, correctly, simply, safely and effectively endangering because of the various electricity consumptions that the fuse fracture of wire brings, and has really accomplished safety utilization of electric power.

Claims (2)

1, a kind of sound and light alarm of fuse fracture of wire and emergent switching device, include a sound light alarming circuit (23), an emergent built-up circuit (24) is formed, it is characterized by and include alarm lamp (5), resistance (6), triode (8) and the hummer (7) that the serial connection form is formed in the described sound light alarming circuit (23), be attempted by the fuse (4) of live wire (1) or zero line (10) or the two ends of (41) by lead-in wire (12) on it and go between down (13).Spare fuse (42) in the described emergent built-up circuit (24) by after the unidirectional selection of double-point double-throw switch (31,14,15), is connected in parallel on the live wire fuse (4) or zero line fuse (41) of fracture of wire again.

2,, it is characterized by described sound light alarming circuit (23) and emergent built-up circuit (24) and can be incorporated in one overall (11) according to the sound and light alarm and the emergent switching device of claim 1.

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