CN201072735Y

CN201072735Y - Shunt release capable of detecting working condition of breaker

Info

Publication number: CN201072735Y
Application number: CNU2007201746575U
Authority: CN
Inventors: 万家盛; 汪志强
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-21
Filing date: 2007-08-21
Publication date: 2008-06-11
Anticipated expiration: 2017-08-21

Abstract

An SHT which can check the working situation of breaker is provided, which comprises a shell 1, a magnet 2 composed of a coil 21 and a gab bit 22, a controlling circuit 3 and a current transformator 4, etc. A switch working situation indicating circuit comprises a resistance R1 and an integrated circuit IC1. When a switch k is cut off, bridge rectifiers D1-D4 have no voltage to output, the 1, 2 pin of the integrated circuit IC1 has no current passing, and the 3,4 pin of the integrated circuit is cut off. The switch control circuit of the control circuit 3 comprises an integrated circuit IC2, a resistance R2, a controllable silicon Q1, bridge rectifiers D1-D4 and a magnet; when the 1,2 pin of the integrated circuit IC2 receives the external signal, the 3,4 pin of the integrated circuit IC2 are communicated, and then the controllable silicon Q1 is communicated to make the magnet TQ move and drive a transmission structure for cutting off the switch K. The utility model has the advantages of being able to check the working situation of breaker and the tripping coil is not burn down by frequent movement, and being able to control the on and off by an external signal or a plurality of external signals and wide application area.

Description

Can detect the shunt release of working state of circuit breaker

Illustrate: switch herein equals circuit breaker, and air switch is a kind of of circuit breaker.

Technical field

The utility model relates to a kind of low-pressure electronic equipment product, the equipped shunt release that uses of specifically a kind of and circuit breaker.

Background technology

The existing shunt release equipped with circuit breaker; as with earth leakage circuit-breaker; claim the shunt release that air switch is equipped mutually again, generally comprise shell, be provided with tripping mechanism, mutual inductor, control circuit and the binding post of forming by coil and armature etc. etc. in the enclosure.Described mutual inductor is enclosed within on phase line and the zero line, electric current on phase line and zero line changes, then mutual inductor can produce electric current, this electric current input control circuit, controllable silicon conducting in the control circuit, coil forms the loop between zero line and phase line, and coil produces magnetic field and makes armature movement, thereby drive the air switch action, thereby deenergization.Behind the equipped air switch of this shunt release, between zero line and phase line, during current imbalance, can cut off the electricity supply in time, can protect people's life and property safety effectively.But this shunt release has only when just playing a role during current imbalance between zero line and phase line.And when running into the timely disconnection of other situation needs air switch, but can't realize.As when running into fire alarm, just manually cut off the electricity supply after generally all needing the fire fighter to reach the spot at present.For another example, in the electrical management process, as run into the electronics envelope that has the people to become flexible ammeter box, it is open circuit in time; Generally speaking, the action of this shunt release all is failure to actuate under other situation, therefore except when just move during current imbalance between zero line and phase line, with the various circuit breakers of this shunt release (air switch just wherein a kind of), its purposes has been subjected to greatly restriction.In addition, after the circuit breaker work with this shunt release, the operating state people of its circuit breaker can't promptly not know whether be to have finished the action of opening circuit veritably as can be known.Moreover former shunt release also exists in the defective of burning coil easily when its coil is frequently threaded off.Chinese patent by retrieval, disclose the patent documentation of the relevant shunt release of part though find Chinese patent literature, there is the circuit complexity mostly in the circuit of these releases, the defective that versatility is not strong, promptly can only be at a certain or some special-purpose, the release that uses as the IC-card kilowatt-hour meter etc.

Summary of the invention

The technical problem that the utility model solves is to overcome above-mentioned shortcoming, provides a kind of after release work, behind the linked circuit breaker open circuit, can detect the shunt release of working state of circuit breaker then.

Another goal of the invention of the present utility model is: this shunt opening release can be equipped with any device that can produce the power-off protection signal and use.

Another goal of the invention of the present utility model is: this shunt opening release can produce button equally and take off action when zero line and phase line current unbalance, when the release running hours, coil can not burnt.

The technical solution of the utility model is: design a kind of shunt release that detects working state of circuit breaker, comprise shell, be positioned at the electromagnet and the control circuit of shell, described control circuit comprises the working state of circuit breaker testing circuit, described working state of circuit breaker testing circuit comprises resistance R 1 and integrated circuit (IC) 1, after K switch disconnects, also no-voltage output thereupon of bridge heap D1-D4,1,2 pin of integrated circuit (IC) 1 do not have electric current to pass through, and 3,4 pin of integrated circuit (IC) 1 disconnect.

Described control circuit also comprises the circuit breaker control circuit; described circuit breaker control circuit comprises integrated circuit (IC) 2, resistance R 1, R2, controllable silicon Q1, bridge heap D1-D4; when 1,2 pin of integrated circuit (IC) 2 receive the circuir break protective signal that is sent by external control devices; 3,4 pin conducting output voltages of integrated circuit (IC) 2; make controllable silicon Q1 conducting; thereby make electromagnet have electric current to pass through, electromagnet disconnects K switch by link gear.

Described control circuit also comprises another kind of circuit breaker control circuit, described circuit breaker control circuit comprises relay or controllable silicon and resistance R 2, one end of relay moving contact or silicon controlled negative electrode and zero line join, the other end of relay moving contact or silicon controlled anodal closure resistance R2 and magnet spool one end join the other end phase-connecting wire of electromagnet coil.

Above-mentioned resistance R 2 is a positive temperature coefficient resistor, and some industry (as color TV trade) also claims field-discharge resistance.Do not burnt when it has guaranteed the tripping coil continuous action, improved its functional reliability.

Described control circuit also comprises the current unbalance control circuit, described current unbalance control circuit comprises current transformer TA, resistance R 3, R4, R5, integrated circuit (IC) 3 and capacitor C 1, C2, C3, C4, C5, voltage stabilizing didoe DW, diode D5, when the current imbalance of zero line N and phase line L, current transformer TA induces voltage signal, 1,2 pin input from integrated circuit (IC) 3,7 pin output voltages of integrated circuit (IC) 3, make controllable silicon Q1 conducting, thereby make electromagnet TQ energising, K switch is disconnected by link gear.

The utility model is owing to adopted described control circuit to comprise the working state of circuit breaker testing circuit, described working state of circuit breaker testing circuit comprises resistance R 1 and integrated circuit (IC) 1, after K switch disconnects, also no-voltage output thereupon of bridge heap D1-D4,1,2 pin of integrated circuit (IC) 1 do not have electric current to pass through, the structure that 3,4 pin of integrated circuit (IC) 1 disconnect, like this, behind the circuit breaker deenergization, this circuit just can detect its operating state, i.e. the whether real disconnection of circuit breaker power supply.

In addition; the utility model still passes through to transform simply to existing miniature circuit breaker; do not need die sinking manufacturing again; just can realize long-range or directly control the switch of circuit breaker; in control circuit, be provided with controlled components and parts; as relay, controllable silicon or photo coupler etc., combine with electromagnet to play and can accept the exterior power-off protection signal controlling and be implemented in application under the multiple occasion, expanded the application of existing shunt release dexterously.The utlity model has the current unbalance power-off protection function again.

Description of drawings

Fig. 1 is the mechanical structure schematic diagram of a kind of embodiment of the utility model;

Fig. 2 is a kind of control circuit theory structure schematic diagram embodiment illustrated in fig. 1;

Fig. 3 is second kind of control circuit theory structure schematic diagram embodiment illustrated in fig. 1;

Fig. 4 is the third control circuit theory structure schematic diagram embodiment illustrated in fig. 1;

Fig. 5 is the 4th a kind of control circuit theory structure schematic diagram embodiment illustrated in fig. 1;

Fig. 6 is the structure-improved schematic diagram to circuit shown in Figure 2;

Fig. 7 is the structure-improved schematic diagram to circuit shown in Figure 3;

Fig. 8 is the structure-improved schematic diagram to circuit shown in Figure 4;

Fig. 9 is the structure-improved schematic diagram to circuit shown in Figure 5.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing:

See also Fig. 1, Fig. 1 is the mechanical structure schematic diagram of a kind of embodiment of the utility model.This shunt opening release comprises shell 1, is provided with electromagnet 2, control circuit 3, current transformer 4, power-line terminal 5 and the signal lead-in clamp 6 that is made of coil 21, armature 22 etc. in described shell 1.Described current transformer 4 is enclosed within on phase line L and the zero line N, and is electrically connected with described control circuit 3, coil 21, power-line terminal 5 and signal lead-in clamp 6, and signal lead-in clamp 6 is used for the outside equipment that produces the power-off protection signal and is connected.

See also Fig. 2, Fig. 2 is a kind of control circuit 3 theory structure schematic diagrames embodiment illustrated in fig. 1.From figure as can be known; control circuit 3 comprises the circuit breaker control circuit; described circuit breaker control circuit comprises integrated circuit (photo coupler) IC2; resistance R 1; R2; controllable silicon Q1; bridge heap D1-D4 and the electromagnet TQ (label of electromagnet is 2 among Fig. 1) that forms by coil and armature etc.; when 1 of integrated circuit (IC) 2; when 2 pin receive the circuir break protective signal that is sent by external control devices; 3 of integrated circuit (IC) 2; 4 pin conductings; the control pin of controllable silicon Q1 obtains Control current and conducting from 4 pin of integrated circuit (IC) 2; thereby make electromagnet have electric current to pass through; electromagnet TQ disconnects K switch by link gear; a link gear part described here is arranged on the K switch; another part is the driving lever equipped mutually with armature; armature movement drives the driving lever action; the driving lever action drives the corresponding mechanism action that is arranged in the K switch again; this part mechanism, already used very general in existing circuit breaker.This is that this shunt opening release is subjected to the exterior power-off protection signal and the operation principle of cutting off the power supply; Described control circuit 3 also comprises the working state of circuit breaker testing circuit, described working state of circuit breaker testing circuit comprises resistance R 1 and integrated circuit (IC) 1 (photo coupler), after K switch disconnects, the also no-voltage output thereupon of bridge heap D1-D4 of power supply is provided for The

whole control circuit

3,1 of integrated circuit (IC) 1,2 pin do not have electric current to pass through, 3 of integrated circuit (IC) 1,4 pin disconnect, at this moment, corresponding device on the external control devices produces action, as detect lamp and extinguish, sound etc., hence one can see that, and K switch is in off-state, and this is the operation principle of the operating state of the utility model energy sense switch K; The resistance R 2 that is adopted between electromagnet TQ and bridge heap D1-D4 in the utility model is positive temperature coefficient resistor, its effect is when electric current is excessive, it is big that the resistance of resistance R 2 becomes, thereby the coil that has guaranteed electromagnet TQ is not burnt under situation about using continuously, and then has improved functional reliability of the present utility model.

The said external control appliance can be any equipment or device that can produce the power-off protection signal, as the utility model being applied on the fire protection equipment, as with the smoke detector mating reaction, so only need be with 3 of the signal output part of the control circuit of smoke detector and integrated circuit (IC) of the

present utility model

2,4 pin join, when smoke detector has perceived smog, it is sending other alarm signal (sound, light signal) time, also to 1 of integrated circuit (IC) 2,2 human hair combing wastes have gone out the power-off protection signal, at this moment, the utility model circuit is work just, thereby cut off the electricity supply, for fire-fighting work has won valuable time, because the outage of fire-fighting traditionally is just artificial outage after the fire fighter reaches the spot; Meanwhile, integrated circuit (IC) 1 also can be sent detection signal, and whether sense switch K outage is successful; The air switch that will have the utility model release for another example uses on electric quantity metering box and when linking to each other with electronics envelope or electronic group encapsulation, when the people illegally moves envelope, electronics envelope or electronic group encapsulation will be given the control circuit 3 input power-off signals of this release, the utility model will disconnect air switch, its operation principle and roughly the same above-mentioned, be exactly with 1 of integrated circuit (IC) 2 in of the present utility model, 2 join with the output of electronics envelope or electronic group encapsulation gets final product, as the moving envelope of people, electronics envelope or electronic group encapsulation send control signal, thereby cause the utility model circuit working, and cut off K switch.

Enumerate two kinds of examples except above-mentioned; in fact shunt release of the present utility model is can be with any external control devices that needs power-off protection effect of matching theoretically; as be used for the Long-distance Control of electric administrative department to earth leakage protective device; it can be implemented in remote control center by wired or wireless; even the disconnection that comes control switch K by the internet; just as long as the integrated circuit (IC) 2 in the utility model can obtain circuir break protective signal; shunt release of the present utility model just can be worked, thereby drives the air switch outage.Certainly, shunt release of the present utility model not only just can be equipped with use by air switch, can also use with other circuit breaker is equipped.

See also Fig. 3, Fig. 3 is second kind of control circuit, 3 theory structure schematic diagrames embodiment illustrated in fig. 1.Circuit theory shown in Figure 3 is compared with circuit theory shown in Figure 2; its general structure is identical; different is that control circuit 3 has also increased the current unbalance control circuit; also (some factory also claims the high breaking miniature circuit breaker to this circuit with earth leakage protective device with regard to traditional; Shanghai flies Europe Electrical Appliances Co., Ltd) the current unbalance control circuit of equipped mutually shunt release; it comprises that (label among Fig. 1 is 4 to current transformer TA; down together); resistance R 3; R4; R5; integrated circuit (IC) 3; and capacitor C 1; C2; C3; C4; C5; voltage stabilizing didoe DW; diode D5; when the current imbalance of zero line N and phase line L; current transformer TA induces voltage signal; from 1 of integrated circuit (IC) 3; the input of 2 pin, 7 pin output voltages of integrated circuit (IC) 3 make controllable silicon Q1 conducting; thereby make electromagnet TQ energising, K switch is disconnected by link gear.Diode D5 does not have in the unbalance control circuit of primary current among Fig. 3, increases the purpose of diode D5, is to prevent that the current reflux of 4 pin of integrated circuit (IC) 2 from arriving 7 pin of integrated circuit (IC) 3.

Fig. 2 and embodiment shown in Figure 3 are the circuit theory diagrams that available outside light current is controlled this shunt opening release.In fact this shunt opening release also can be controlled with the external control devices of exportable forceful electric power signal, as the circuit theory diagrams of following Fig. 4 that will narrate and Fig. 5.

See also Fig. 4, Fig. 4 is the third control circuit 3 theory structure schematic diagrames embodiment illustrated in fig. 1.Circuit theory shown in Figure 4 is compared with circuit theory shown in Figure 1, and its general structure is identical, and different is: integrated circuit (IC) among Fig. 12 has been replaced by relay J, and certainly, the relay J here also can replace with controllable silicon.When the relay J in the external control devices (or controllable silicon) conducting, electromagnet TQ forms the loop by resistance R 2 between phase line L and zero line N, and the electromagnet TQ action of switching on drives link gear then K switch is disconnected.The operation principle of integrated circuit (IC) 1 is identical with operation principle among Fig. 1, repeats no more here.

See also Fig. 5, Fig. 5 is the 4th kind of control circuit 3 theory structure schematic diagrames embodiment illustrated in fig. 1.Circuit theory shown in Figure 5 is compared with circuit theory shown in Figure 4, and its general structure is identical, be not both the current unbalance control circuit that has increased shown in Fig. 3, the operation principle of this partial circuit and structure have been done detailed narration in Fig. 3, repeat no more here.

See also Fig. 6, Fig. 7, Fig. 6 is the structure-improved schematic diagram to circuit shown in Figure 2; Fig. 7 is the structure-improved schematic diagram to circuit shown in Figure 3.Fig. 6 compares with Fig. 3 with Fig. 2, Fig. 7; its general structure is identical; different is Fig. 6 and circuit shown in Figure 7; they are suitable for the external equipment that a plurality of (among the figure draw only gone out 4 external equipments) can produce the light current break signal and control a circuit breaker job by a release; one in these 4 external equipments can be smoke detector; the power-off protection signals that power-off protection signal that also can be control centre send by the internet or the envelope of the electronics on the ammeter box or electronic group encapsulation send etc. can make circuit breaker disconnect in the very first time.

See also Fig. 8 and Fig. 9, Fig. 8 is the structure-improved schematic diagram to circuit shown in Figure 4; Fig. 9 is the structure-improved schematic diagram to circuit shown in Figure 5.Fig. 8 compares with Fig. 5 with Fig. 4, Fig. 9, identical (the relay J among Fig. 4 and Fig. 5 of its general structure, be located among the external equipment 1-4 at Fig. 8 and Fig. 9, so do not draw), different is Fig. 8 and circuit shown in Figure 9, and they are suitable for the external equipment that a plurality of (among the figure draw only gone out 4 external equipments) can produce the forceful electric power break signal and control a circuit breaker job by a release.Circuit breaker was disconnected in the very first time.

Be understandable that above execution mode only is the illustrative embodiments that adopts for structure of the present utility model is described, yet the utility model is not limited thereto.For those skilled in the art, under the situation that does not break away from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement also are considered as protection range of the present utility model.

Claims

1. shunt release that can detect working state of circuit breaker, comprise shell, be positioned at the electromagnet and the control circuit of shell, it is characterized in that: described control circuit comprises the working state of circuit breaker testing circuit, described working state of circuit breaker testing circuit comprises resistance R 1 and integrated circuit (IC) 1, after K switch disconnects, also no-voltage output thereupon of bridge heap D1-D4,1,2 pin of integrated circuit (IC) 1 do not have electric current to pass through, and 3,4 pin of integrated circuit (IC) 1 disconnect.

2. the shunt release that detects working state of circuit breaker according to claim 1; it is characterized in that: described control circuit also comprises the circuit breaker control circuit; described circuit breaker control circuit comprises integrated circuit (IC) 2, resistance R 1, R2, controllable silicon Q1, bridge heap D1-D4; when 1,2 pin of integrated circuit (IC) 2 receive the circuir break protective signal that is sent by external control devices; 3,4 pin conductings of integrated circuit (IC) 2; make controllable silicon Q1 conducting; thereby make electromagnet TQ have electric current to pass through, electromagnet TQ disconnects K switch by link gear.

3. the shunt release that detects working state of circuit breaker according to claim 2 is characterized in that: described resistance R 2 is positive temperature coefficient resistor.

4. the shunt release that detects working state of circuit breaker according to claim 1, it is characterized in that: described control circuit also comprises the circuit breaker control circuit, described circuit breaker control circuit comprises relay J or controllable silicon and resistance R 2, one end of the moving contact of relay J or silicon controlled negative electrode and zero line join, one end of the other end of the moving contact of relay J or silicon controlled anodal closure resistance R2 and electromagnet TQ coil joins the other end phase-connecting wire of electromagnet TQ coil.

5. according to claim 1,2,3 or the 4 described shunt releases that detect working state of circuit breaker, it is characterized in that: described control circuit also comprises the current unbalance control circuit, described current unbalance control circuit comprises current transformer TA, resistance R 3, R4, R5, integrated circuit (IC) 3, and capacitor C 1, C2, C3, C4, C5, voltage stabilizing didoe DW, diode D5, when the current imbalance of zero line N and phase line L, current transformer TA induces voltage signal, from 1 of integrated circuit (IC) 3, the input of 2 pin, 7 pin output voltages of integrated circuit (IC) 3, make controllable silicon Q1 conducting, thereby make electromagnet TQ energising, K switch is disconnected by link gear.