CN102891046A

CN102891046A - Circuit breaker interlocking device

Info

Publication number: CN102891046A
Application number: CN2012103538695A
Authority: CN
Inventors: 周振业; 贺华军; 刘蜀江
Original assignee: Beihai Galaxy Switch Devices Co Ltd
Current assignee: GUANGXI YINHE DECOM ELECTRIC Co.,Ltd.
Priority date: 2012-09-21
Filing date: 2012-09-21
Publication date: 2013-01-23
Anticipated expiration: 2032-09-21
Also published as: CN102891046B

Abstract

The invention discloses a circuit breaker interlocking device which comprises a closing shaft, a closing baffle block, a closing crank arm, a closing bent plate and a latching electromagnet; the closing shaft is connected with the closing baffle block and the closing crank arm; the closing crank arm and the crank bent plate are connected through an articulated shaft; the closing bent plate is provided with a guide long hole and a baffle plate; the guide long hole is internally provided with a spacing screw rod; a latching electromagnet is arranged on the baffle plate of the closing bent plate along the motion trail of the guide long hole; when the latching electromagnet is not electrified, the lower end of an iron core of the latching electromagnet is positioned on the motion trail of the baffle plate; the terminal of the motion trail of the electrified motion of the iron core is provided with a micro switch; the micro switch controls the closing electromagnet to move; and terminal of the motion trail of the baffle plate of the closing bent plate is provided with another micro switch which controls an energy storage motor to operate. Compared with the prior art, the circuit breaker interlocking device solves the problem that the current circuit breaker interlocking device can not latch an energy storage branch and can prevent a circuit breaker from jumping, thereby reducing safety hazard.

Description

Circuit breaker interlocking device

Technical field

The present invention relates to power transmission and transformation switchgear manufacturing technology field, especially a kind of spring-operated circuit breaker interlocking device of high-voltage switch equipment.

Background technology

The high voltage switchgear of producing at present and using all is equipped with primary cut-out, close circuit breaker in order to prevent mistake, need to mechanical interlocks be set in primary cut-out operating mechanism inside, Chinese patent Granted publication CN201498907U discloses a kind of circuit breaker interlocking device.This interlock includes making electromagnet, combined floodgate axle, combined floodgate block, combined floodgate connecting lever, combined floodgate bent plate etc., but this interlock is only applicable to the withdraw-type circuit breaker, makes circuit breaker cart when off-position or test position, the No switching on circuit breaker; Perhaps when circuit breaker is in "on" position, forbid that handcart advances release, prevent that on-load from drawing, pushing away by mistake circuit breaker.But this device is not suitable for fixed breaker, is of limited application.And existing interlock, all the energy storage branch road of operating mechanism inside is not carried out locking, when the combined floodgate axle did not reset, energy storage motor also can automatic energy storage, causes the circuit breaker mistake to be closed, and has potential safety hazard.

Summary of the invention

Problem to be solved by this invention provides a kind of problem that can solve present circuit breaker interlocking device can not locking energy storage branch road, can realize the circuit breaker interlocking device of the anti-bouncing function of circuit breaker.

In order to address the above problem, technical scheme of the present invention is: this circuit breaker interlocking device includes the formations such as making electromagnet, combined floodgate axle, combined floodgate block, combined floodgate connecting lever, combined floodgate bent plate, dividing plate, mounting panel, sensitive switch and energy storage motor.Front and back on the described combined floodgate axle are connected with respectively described combined floodgate block and described combined floodgate connecting lever; Described combined floodgate connecting lever is connected by twisted axis with described combined floodgate bent plate; Described combined floodgate bent plate is provided with long guiding hole and baffle plate, be provided with Limit screw in the described long guiding hole, be provided with the switch knob that promotes described combined floodgate bent plate motion at dividing plate, along the next door of the movement locus of described long guiding hole latching electromagnet be housed at the baffle plate of described combined floodgate bent plate; Described latching electromagnet is when no power, and described iron core lower end is positioned on the movement locus of described baffle plate; End at the movement locus of described iron core energising action is equipped with described sensitive switch; The normally opened contact of described sensitive switch and the coil of described making electromagnet are connected in the control loop; End at the movement locus of the baffle plate of described combined floodgate bent plate is equipped with another sensitive switch; The normally-closed contact of described another sensitive switch and described energy storage motor are connected in another control loop.

Owing to having adopted such scheme, the present invention compared with prior art has following beneficial effect:

Be provided with more reliable machinery and electric interlocking installation in circuit breaker operation mechanism inside, the combined floodgate branch road of not only interlocking prevents from closing circuit breaker by mistake; And interlocking energy storage branch road, realize the circuit breaker anti-bouncing function.Be applicable to simultaneously handcart type breaker and fixed breaker, simple in structure, safe and reliable, easy to use.

Description of drawings

Fig. 1 is the front view of circuit breaker interlocking device of the present invention.

Fig. 2 is the cutaway view at A-A place among Fig. 1.

Fig. 3 is the breaker closing branch road control principle electrical schematics of circuit breaker interlocking device of the present invention.

Fig. 4 is the breaker energy storage branch road control principle electrical schematics of circuit breaker interlocking device of the present invention.

Embodiment

The invention will be further described below in conjunction with drawings and Examples:

Fig. 1, Fig. 2, Fig. 3 and Figure 4 shows that circuit breaker interlocking device of the present invention comprise by making electromagnet 1, combined floodgate axle 2,

sensitive switch

3 and 8, latching electromagnet 4, combined floodgate bent plate 5, combined floodgate connecting lever 6, combined floodgate block 7, sensitive switch 8, iron core 9, energy storage motor M etc. consisting of.Front and back on the combined floodgate axle 2 are connected with respectively combined floodgate block 7 and combined floodgate connecting lever 6; Combined floodgate connecting lever 6 and combined floodgate bent plate 5 are connected by twisted axis; Combined floodgate bent plate 5 is provided with long guiding hole and baffle plate, is provided with Limit screw 10 in the long guiding hole, is provided with the switch knob 14 that promotes 5 motions of combined floodgate bent plate at dividing plate, along the next door of the movement locus of long guiding hole latching electromagnet 4 is housed at the baffle plate of combined floodgate bent plate 5; Latching electromagnet 4 is when no power, and iron core 9 lower ends are positioned on the movement locus of baffle plate; End at the movement locus of iron core 9 energising action is equipped with sensitive switch 3; End at the movement locus of the baffle plate of combined floodgate bent plate 5 is equipped with another sensitive switch 8.There are between power cathode-KM a breaker closing control loop that is in series by the coil J of the normally opened contact S2 of sensitive switch 3 and making electromagnet 1 and one to carry the energy storage control loop that the normally-closed contact S1 of protection switch is in series by the normally-closed contact S of another sensitive switch 8 and energy storage motor M and energy storage motor in control positive source+KM and control.It is specifically worked like this:

Dividing plate 12 in breaker mechanism is equipped with making electromagnet 1, at combined floodgate axle 2 combined floodgate block 7 and combined floodgate connecting lever 6 is installed, and when making electromagnet 1 energising action, its iron core bump combined floodgate block 7 can drive 2 rotations of combined floodgate axle, realizes closing operation.Dividing plate 13 in breaker mechanism has been installed combined floodgate bent plate 5 and latching electromagnet 4, and latching electromagnet 4 is fixed installations, and combined floodgate bent plate 5 leads by Limit screw 10, but horizontal slip.Latching electromagnet 4 is fixedly mounted on the dividing plate 13 by mounting panel 11, its installation site is when latching electromagnet 4 no power, iron core corrects gear for 9 times on the track of the motion of the baffle plate of combined floodgate bent plate 5 one ends, and therefore can't press switch knob 14 carries out closing by hand.Sensitive switch 3 and sensitive switch 8 also have been installed on mounting panel 11 simultaneously.At this moment, the sensitive switch 3 that is installed in latching electromagnet 4 tops does not move, and the normally opened contact S2 that is connected in the breaker closing control loop is not closed, and the combined floodgate branch road is obstructed, forbids electric switch-on.When latching electromagnet 4 is in the energising released state, the mechanical latching to combined floodgate bent plate 5 is removed in its lower end that iron core 9 moves upward, and press switch knob 14 this moment can make combined floodgate bent plate 5 move inwards, promotes combined floodgate connecting lever 6, make 2 rotations of combined floodgate axle, realize closing by hand; And the upper end of iron core 9 makes sensitive switch 3 actions, and the normally opened contact S2 that is connected in the combined floodgate control loop is closed, and this moment, making electromagnet 1 energising action promoted combined floodgate block 7, made 2 rotations of combined floodgate axle, realized electric switch-on.Be in energising during released state at latching electromagnet 4, no matter electric switch-on or closing by hand all can make combined floodgate bent plate 5 move inwards, push down sensitive switch 8, the normally-closed contact S that is connected in the energy storage control loop is disconnected, cut off the power supply of energy storage motor M, forbid automatic energy storage.If reclosing command is not removed or because the various failure causes axle 2 that causes closing a floodgate fails to reset, and combined floodgate bent plate 5 is just being pressed sensitive switch 8 all the time, and normally-closed contact S disconnects all the time, make the energy storage control loop keep open circuit always, energy storage motor M can not automatic energy storage.

This device can be mechanically upward interlocked to circuit breaker operation mechanism simultaneously with electric, has prevented that reliably mistake from closing circuit breaker.In addition, a whole set of interlock can be used as annex and is installed on the circuit breaker operation mechanism body, need not to change the structure of circuit breaker, uses and installs all very convenient.

Claims

1. circuit breaker interlocking device, include making electromagnet (1), combined floodgate axle (2), combined floodgate block (7), combined floodgate connecting lever (6), combined floodgate bent plate (5), dividing plate (13), mounting panel (11), sensitive switch (3) and energy storage motor, it is characterized in that: the front and back on the described combined floodgate axle (2) are connected with respectively described combined floodgate block (7) and described combined floodgate connecting lever (6); Described combined floodgate connecting lever (6) is connected by twisted axis with described combined floodgate bent plate (5); Described combined floodgate bent plate (5) is provided with long guiding hole and baffle plate, be provided with Limit screw (10) in the described long guiding hole, be provided with the switch knob (14) that promotes described combined floodgate bent plate (5) motion at dividing plate, at the baffle plate of described combined floodgate bent plate (5) latching electromagnet (4) be housed along the next door of the movement locus of described long guiding hole; Described latching electromagnet (4) is when no power, and described iron core (9) lower end is positioned on the movement locus of described baffle plate; End at the movement locus of described iron core (9) energising action is equipped with described sensitive switch (3); The normally opened contact (S2) of described sensitive switch (3) is connected in the control loop with the coil of described making electromagnet (1); End at the movement locus of the baffle plate of described combined floodgate bent plate (5) is equipped with another sensitive switch (8); The normally-closed contact (S) of described another sensitive switch (8) is connected in another control loop with described energy storage motor.