CN2357409Y - Contactless non-mechanical movement circuit breaker - Google Patents

Abstract

The utility model relates to an electric breaker without contacts and mechanical movement, which is composed of a breaker body and a control breaker power supply, wherein, the breaker body is composed of metal current carrying bodies, each metal current carrying body has four ends, two ends of the control breaker power supply are connected in a main circuit in series, and the other two ends are connected to an output line of the control open circuit power supply. The control breaker power supply outputs current onto the metal current carrying bodies to form short circuit for making the control breaker power supply fused, the main circuit is switched off, or electric heating wires are inserted into the metal current carrying bodies, and the electric heating wires emit heat to fuse the metal current carrying bodies to make the main loop switched off. The utility model has the advantages of no contacts, no mechanical movement, no current limitation and low cost, and is especially suitable for a breaker in an electric energy metering device for charging in advance.

Description

The circuit breaker contactless and nothing machinery moves

The utility model relates to a kind of electrical open device, is a kind of contactless and mechanical circuit breaker that moves of nothing, is adapted to do the not circuit breaker of frequent movement requirement especially.

At present, low pressure not the circuit breaker of frequent movement mostly be air switch or A.C. contactor.These two kinds of circuit breakers, because mechanical movement or vibration cause, the contact often burns out, and causes loose contact, the long operation of coil is simultaneously easily generated heat, is burnt.As the circuit breaker in electric energy metrical prepaid device, owing to adopted air switch and A.C. contactor, functional reliability is little, and operating current has limitation, has influenced the popularization of electric energy metrical prepaid device.

The utility model provide a kind of simple in structure, with low cost, power consumption is little, do not have the machinery motion, contactless, the circuit breaker that is not subjected to the load current limitation.

The circuit breaker of the utility model design is made up of open circuit body and the control power supply two parts that open circuit.The body that opens circuit is made of the metal carrying object, four ends are arranged on its metal carrying object, its two ends are connected on the major loop, in addition two ends and the control power supply output line that opens circuit is connected, control is opened circuit, and output current causes short circuit on the metal carrying object on the power supply output line, make the fusing of metal carrying object, disconnect major loop, or on the metal carrying object, embed heating wire, control the two ends that the power supply output line that opens circuit is connected on heating wire, control the power supply output line output current that opens circuit, make the electrothermal wire heating, the fuse metal carrying object disconnects major loop.Its control power supply that opens circuit is a transformer and a control switch, secondary coil is designed to low-voltage, big electric current, its control power supply output line that opens circuit is the secondary output line of transformer, and each secondary winding is independently of one another, mutually insulated, each secondary group only can independent action on a metal carrying object.

Because the body that opens circuit of the present utility model is made of the metal carrying object, therefore cheap, this circuit breaker does not have machinery motion, contactless simultaneously, because the metal carrying object is disposable, so must change again after its fusing, not have the possibility of false switching, the reliability height.

Brief Description Of Drawings:

Fig. 1 is the structural representation of embodiment of the present utility model.

Fig. 2 is the structure of metal carrying object shown in Figure 1.

Fig. 3 is another structure of metal carrying object shown in Figure 1.

The utility model is designed a kind of three-phase quadriphase system circuit breaker, as preferred embodiment: it is made up of open circuit body and the control power supply two parts that open circuit, the body that opens circuit has four metal carrying objects to constitute, control the power supply that opens circuit and be made of a transformer and a control switch, each metal carrying object has four ends.The two ends of each metal carrying object respectively are connected on the major loop, and in addition two terminate at control and open circuit on the power supply output line, and every group of control power supply output line that opens circuit is the output line of one group of secondary winding of transformer.

The concrete structure of present embodiment such as Fig. 1～shown in Figure 3, in conjunction with the accompanying drawings, be described in detail as follows:

The general structure of present embodiment as shown in Figure 1, there is open circuit power supply 2 of body of opening circuit 1 and control to constitute, the body that opens circuit is four metal carrying objects 11,12,13,14, each metal carrying object is connected on the major loop respectively, controlling the power supply that opens circuit is transformer 21 and control switch 22, each winding of transformer secondary output is respectively: 211,212,213,214 their the controls power supply output line that opens circuit is respectively 2111,2112,2121,2122,2131,2132,2141,2142, and the control power supply output line correspondence that opens circuit is connected on the metal carrying object 11,12,13,14.Control switch 22 has a control break signal line 221.According to the control requirement of opening circuit, control break signal line 221 obtains break signal, closed control switch 22, transformer 21 is devoted oneself to work, the transformer secondary output output current, fuse metal carrying object 11,12,13,14 reaches the purpose that opens circuit, when needs are connected major loop, the metal carrying object that must more renew.

Shown in Figure 2 is the structure of a metal carrying object of the present utility model: 111,112 are respectively major loop input, output on the metal carrying object 11, metal current-carrying side 113,114 is connected on to be controlled on the power supply output line 2111,2112 that opens circuit, when control power supply output line 2111,2112 output currents that open circuit, between 113,114, form short circuit, the fuse metal carrying object reaches the purpose that disconnects major loop.

The another kind of shown in Figure 3 is a metal carrying object of the present utility model can be implemented structure: 111,112 of metal carrying object is respectively major loop input, output, embed heating wire on the metal carrying object, electric current is by heating wire two ends 113,114, make the metal carrying object be subjected to thermal cut, reach the purpose that disconnects major loop.

Claims (3)

1, a kind of contactless and do not have a circuit breaker of machinery motion, form by open circuit body and the control power supply two parts that open circuit, it is characterized in that the body that opens circuit is made of the metal carrying object, four ends are arranged on its metal carrying object, its two ends are connected on the major loop, in addition two terminate at control and open circuit on the power supply output line, the control output current on the power supply output line that opens circuit forms short circuit on the metal carrying object, make the fusing of metal carrying object, disconnect major loop.

2, said contactless and do not have a circuit breaker of machinery motion as claim 1, it is characterized in that, embed heating wire on the metal carrying object, control the two ends that the power supply output line that opens circuit is connected on heating wire, control the power supply output line output current that opens circuit, make electrothermal wire heating, deposite metal carrying object, disconnect major loop.

3, said contactless and do not have a circuit breaker of machinery motion as claim 1, it is characterized in that said transformer time group winding is a low-voltage, big electric current, independently of one another, the mutually insulated of each secondary winding, each secondary winding only can independent action in a metal carrying object.