CN201262927Y - Electromagnet type circuit breaker with short circuit self-locking function - Google Patents
Electromagnet type circuit breaker with short circuit self-locking function Download PDFInfo
- Publication number
- CN201262927Y CN201262927Y CNU2008201901946U CN200820190194U CN201262927Y CN 201262927 Y CN201262927 Y CN 201262927Y CN U2008201901946 U CNU2008201901946 U CN U2008201901946U CN 200820190194 U CN200820190194 U CN 200820190194U CN 201262927 Y CN201262927 Y CN 201262927Y
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- circuit breaker
- circuit
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- electromagnet
- control
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Abstract
The utility model relates to an electromagnetic circuit breaker with a self-lock function during the short circuit, which is characterized in that: a self-lock mechanism during the short circuit is arranged in the circuit breaker, so the circuit breaker can not be closed directly when being disconnected due to the short circuit, so as to remind the operators of the short circuit. As a result, the operators can reclose the circuit breaker only after identifying the causes and solving the problems. Under the condition of keeping all functions of the original circuit breakers, the mechanical circuit breaker with the self-lock function during the short circuit is additionally provided with the self-lock function during the short circuit, thus overcoming the defects in the prior art such as burnout of the circuit breakers or fire caused by the reclosing of the circuit breaker.
Description
Technical field
The utility model belongs to a kind of low-voltage electrical apparatus, is the circuit breaker that a kind of electromagnet type has short circuit self-locking function specifically.
Background technology
Mainly be to constitute (Fig. 1) at the circuit breaker (being commonly called as air switch) that uses at present by shell, operating grip, self-locking gangbar, dropout linkage, movement arm and operating point (contact), its course of work is: the manipulation operations handle makes the self-locking gangbar drive the movement arm motion, the contact is linked to each other with the sheet metal of output finish the switch closure process, the gangbar of self-locking simultaneously cooperates with the dropout linkage finishes closed self-locking (Fig. 2).For circuit is protected, in existing circuit breaker, also be provided with overcurrent action Agency And sheet metal protection mechanism, its course of work is: when the electric current that flows through circuit breaker surpasses the current ratings certain value, the lower end that overcurrent coil in the overcurrent actuating mechanism makes the actuating strut action of overcurrent actuating mechanism push the dropout linkage is rotated the dropout linkage, the self-locking gangbar breaks away from the dropout linkage and finishes the circuit breaker disconnection, reaches the purpose of protection; The course of work of bimetal leaf protection mechanism is: when the electric current that flows through circuit breaker surpasses the current ratings certain value; make bi-metal plate deformed and touch the rotation of dropout linkage; the self-locking gangbar breaks away from the dropout linkage and finishes the circuit breaker disconnection, reaches the purpose of protection.But; after circuit breaker disconnects; the actuating strut of its overcurrent actuating mechanism or bimetallic sector-meeting recover reset condition; when if load is short-circuited; though above-mentioned circuit breaker can be finished overcurrent protection, still exist need not to find out circuit breaker disconnect cause (because operating personnel do not know the overcurrent protection short circuit) close circuit breaker once more, to such an extent as to burn circuit breaker or cause the defective of fire; this class accident of picture has repeatedly seen medium.
Summary of the invention
The purpose of this utility model provides a kind of when circuit is short-circuited, after circuit breaker disconnects, must carry out reset operation (is short circuit to remind the operator) again the electromagnet type of close circuit breaker have the circuit breaker of short circuit self-locking function, to overcome the defective of burning circuit breaker in the prior art or causing fire.
To achieve these goals, the utility model is provided with short-circuit self-locking mechanism in circuit breaker, short-circuit self-locking mechanism comprises self-locking mechanism and resetting device, self-locking mechanism is the mechanism that control dropout linkage keeps the overcurrent protection state, its resetting device is to make the dropout linkage recover the mechanism of reset condition, be characterized in: self-locking mechanism is laterally moved by the stock that one of a control unit control has chimb, and the end points of stock contacts with the upper end of dropout gangbar in the circuit breaker; Resetting device is cooperated with described stock by a button that is built-in with stage clip and constitutes, the inner of button connects a long slab that has dovetail groove, dovetail groove in the long slab is a deep trouth near the dropout gangbar, stage clip in the button is when oppression state, and the chimb of its stock is shelved in the shallow slot of long slab dovetail groove.
Above-mentioned control unit is made of the electromagnet and the tongue tube that are arranged in the case for circuit breaker, the movement arm of electromagnet connects the stock that has chimb, tongue tube is arranged on circuit breaker inside conductor other (Fig. 9), and magnet spool is connected with the power supply of circuit breaker input with tongue tube series connection back.
Above-mentioned control unit is by the electromagnet that is arranged in the case for circuit breaker, transducer and transducer control control circuit for electromagnet constitute, wherein transducer passes the circuit breaker inside conductor, the output of transducer links to each other with transducer control control circuit for electromagnet, the action of control circuit control electromagnet, the movement arm of electromagnet connects the stock that has chimb.
Because the utility model is provided with short-circuit self-locking mechanism in circuit breaker, make the utility model after the circuit breaker that is short-circuited disconnects phenomenon, direct close circuit breaker, reminding operator's accident that is short-circuited, close circuit breaker again after should ascertaining the reason and deal with problems.The utility model has increased short circuit self-locking function keeping under the situation of original circuit breaker all functions, thus overcome in the prior art because of after the short circuit again close circuit breaker cause the defective of burning circuit breaker or causing fire.
Description of drawings
Fig. 1 is present circuit breaker off-state structural representation.
Fig. 2 is present breaker closing status architecture schematic diagram.
Fig. 3 is the utility model embodiment 1 closure state structural representation.
Fig. 4 is the utility model embodiment 1 self-locking state structural representation.
Fig. 5 is the utility model embodiment 2 closure state structural representations.
Fig. 6 is the utility model embodiment 2 self-locking state structural representations.
Fig. 7 is the utility model embodiment 2 stereograms.
Fig. 8 is the utility model transducer control control circuit for electromagnet schematic diagram.
Among the figure: 1-shell, 2-operating grip, 3-self-locking gangbar, 4-dropout linkage, 5-overcurrent actuating mechanism, 6-bimetal leaf, 7-movement arm, 8-operating point, 9-button, 9.1-button long slab, 10-electromagnet, 10.1-electromagnet stock, 11-tongue tube, 12-instrument transformer, 13-control circuit.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
The utility model is under the situation that keeps former breaker structure constant (all functions are constant); a short-circuit self-locking mechanism is set in circuit breaker in addition to be constituted; short-circuit self-locking mechanism comprises self-locking mechanism and resetting device; its self-locking mechanism is the mechanism that control dropout linkage keeps the overcurrent protection state, and its resetting device is to make the dropout linkage recover the mechanism of reset condition.
Embodiment 1:
Self-locking mechanism of the present utility model is made of an electromagnet and a tongue tube that is arranged in the case for circuit breaker, and the movement arm of electromagnet connects a stock that has chimb, and the end points of stock contacts with the upper end of dropout gangbar in the circuit breaker; Resetting device is cooperated with described stock by a button that is built-in with stage clip and constitutes, the inner of button connects a long slab that has dovetail groove, long slab is arranged between electromagnet and the dropout gangbar, dovetail groove in the long slab is a shallow slot near electromagnet side, near the dropout gangbar is deep trouth, stage clip in the button is when oppression state, the chimb of its stock is shelved in the shallow slot of long slab dovetail groove, tongue tube is arranged on circuit breaker inside conductor other (Fig. 3), and magnet spool is connected with the power supply of circuit breaker input with tongue tube series connection back.
The operation principle of present embodiment is: when circuit breaker is short-circuited, owing to be much higher than the rated current of circuit breaker by the electric current in the circuit breaker inside conductor, produce high-intensity magnetic field around the lead, make the other tongue tube adhesive of lead, magnet spool gets, the movement arm action of electromagnet, movement arm drives stock and promotes dropout linkage rotation (circuit breaker being disconnected with the overcurrent actuating mechanism), simultaneously, because the recovery of stage clip in the mobile and button of stock, make in the shallow slot of chimb by the long slab dovetail groove of stock and move in the deep trouth of long slab dovetail groove, after even circuit breaker disconnects, because the chimb of stock is blocked by the deep trouth of long slab dovetail groove, can not recover, can not recover even the dropout linkage remains on trip status, thus the feasible closed procedure handle that both made, can not make breaker closing, and finish short circuit self-locking (Fig. 4).Recovery operation if desired, only need press the button, the movement arm of electromagnet recovers, make the deep trouth of the chimb disengaging long slab dovetail groove of the stock in the deep trouth that is stuck in the long slab dovetail groove, get back in the shallow slot of long slab dovetail groove, the gangbar of promptly threading off is recovered, and just closed procedure handle once more makes breaker closing.
Embodiment 2:
Self-locking mechanism of the present utility model is by an electromagnet that is arranged in the case for circuit breaker, transducer and control circuit constitute, wherein transducer passes the circuit breaker inside conductor, the output of transducer links to each other with control circuit, control circuit control electromagnet action (Fig. 7), other structures and embodiment 1 identical (Fig. 5).
The operation principle of present embodiment except that electromagnet by the control circuit control, other principles and embodiment 1 identical (Fig. 6).
The power circuit of the utility model transducer control control circuit for electromagnet (Fig. 7) is made up of diode D1-D4, resistance R 1, R2, R3, capacitor C 1, integrated circuit (IC) 1, comparison circuit is made up of resistance R 4, R5, variable resistor W integrated circuit (IC) 2, short-circuit detecting circuit is made up of instrument transformer TA, capacitor C 2 diode D7, and controlling output circuit is made up of capacitor C 3, resistance R 6, triode Q, diode D5, electromagnet coil XQ.Its principle is: when circuit is short-circuited fault, sensor sensing goes out voltage through the reference voltage comparison with the comparison circuit inverting input of the in-phase input end that is input to comparison circuit behind the diode rectification, the output high potential drives triode Q conducting, the electromagnet action promotes transmission mechanism and makes circuit breaker tripping, cuts off the electricity supply.
The utility model also can be set to conventional overcurrent by short circuit current, finishes the overcurrent self-locking, makes the utility model be transformed into a kind of circuit breaker with overcurrent self-locking function.
The content that is not described in detail in this specification belongs to this area professional and technical personnel's known prior art.
Claims (3)
1, a kind of electromagnet type has the circuit breaker of short circuit self-locking function, in circuit breaker, be provided with short-circuit self-locking mechanism, short-circuit self-locking mechanism comprises self-locking mechanism and resetting device, self-locking mechanism is the mechanism that control dropout linkage keeps the overcurrent protection state, its resetting device is to make the dropout linkage recover the mechanism of reset condition, it is characterized in that: self-locking mechanism is laterally moved by the stock that one of a control unit control has chimb, and the end points of stock contacts with the upper end of dropout gangbar in the circuit breaker; Resetting device is cooperated with described stock by a button that is built-in with stage clip and constitutes, the inner of button connects a long slab that has dovetail groove, dovetail groove in the long slab is a deep trouth near the dropout gangbar, stage clip in the button is when oppression state, and the chimb of its stock is shelved in the shallow slot of long slab dovetail groove.
2, electromagnet type as claimed in claim 1 has the circuit breaker of short circuit self-locking function, it is characterized in that: control unit is made of the electromagnet and the tongue tube that are arranged in the case for circuit breaker, the movement arm of electromagnet connects the stock that has chimb, tongue tube is arranged on by the circuit breaker inside conductor, and magnet spool is connected with the power supply of circuit breaker input with tongue tube series connection back.
3, electromagnet type as claimed in claim 1 has the circuit breaker of short circuit self-locking function, it is characterized in that: control unit is by the electromagnet that is arranged in the case for circuit breaker, transducer and transducer control control circuit for electromagnet constitute, wherein transducer passes the circuit breaker inside conductor, the output of transducer links to each other with transducer control control circuit for electromagnet, the action of control circuit control electromagnet, the movement arm of electromagnet connects the stock that has chimb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201901946U CN201262927Y (en) | 2008-08-12 | 2008-08-12 | Electromagnet type circuit breaker with short circuit self-locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201901946U CN201262927Y (en) | 2008-08-12 | 2008-08-12 | Electromagnet type circuit breaker with short circuit self-locking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201262927Y true CN201262927Y (en) | 2009-06-24 |
Family
ID=40809404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201901946U Expired - Lifetime CN201262927Y (en) | 2008-08-12 | 2008-08-12 | Electromagnet type circuit breaker with short circuit self-locking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201262927Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391549A (en) * | 2018-04-19 | 2019-10-29 | 辽宁中航信诺科技有限公司 | Airplane power source socket with anti-mis-insertion defencive function |
-
2008
- 2008-08-12 CN CNU2008201901946U patent/CN201262927Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110391549A (en) * | 2018-04-19 | 2019-10-29 | 辽宁中航信诺科技有限公司 | Airplane power source socket with anti-mis-insertion defencive function |
| CN110391549B (en) * | 2018-04-19 | 2020-11-06 | 辽宁中航信诺科技有限公司 | Aviation power socket with misplug prevention protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090624 Effective date of abandoning: 20080812 |