CN103236361B

CN103236361B - Interlocking device

Info

Publication number: CN103236361B
Application number: CN201310105356.7A
Authority: CN
Inventors: 李鹏飞
Original assignee: SHANGHAI THEHAO ELECTRIC POWER TECHNOLOGY Co Ltd
Current assignee: SHANGHAI THEHAO ELECTRIC POWER TECHNOLOGY Co.,Ltd.
Priority date: 2013-03-28
Filing date: 2013-03-28
Publication date: 2015-04-15
Anticipated expiration: 2033-03-28
Also published as: CN103236361A

Abstract

The invention provides an interlocking device comprising at least two sets of power-distributing cabinets. Each set of the power-distributing cabinet comprises an isolating cabinet and circuit breaker cabinets electrically connected with the isolating cabinet. One linkage lock sharing one first key is included in each of the circuit breaker cabinets, and the first key of each linkage lock is only allowed to be pulled out or inserted on locking conditions. By the arrangement of the linkage locks sharing the first key, the first key of each linkage lock is only allowed to be pulled out or inserted on the locking conditions, interlocking among different cabinet bodies is realized, and damages of electric equipment caused by being supplied with power simultaneously by the power-distributing cabinets are avoided.

Description

Interlocking device

Technical field

The present invention relates to field of power distribution, particularly a kind of interlocking device.

Background technology

The development & application of electric energy has greatly promoted the development of human civilization.From the high-tension electricity in power plant to the productive life electricity consumption of huge numbers of families and factory, transmission system and distribution system play an important role.Switch cubicle, as the distribution instrument of key, in distribution management, such as, in line maintenance and power delivery, plays an important role.

In field of power distribution, existing KYN28A-12 intermediate switchgear cabinet, XGN37-12 switch cubicle and XGN2-12 switch cubicle all cannot realize the mechanical interlocking between different cabinet.

Summary of the invention

The technical problem to be solved in the present invention is to overcome in prior art the defect not having interlocking device between different cabinet, provides a kind of interlocking device be applied between different cabinet.

The present invention solves above-mentioned technical problem by following technical proposals:

A kind of interlocking device, it includes at least two group power distribution cabinets, each group power distribution cabinet comprises an isolation cabinet and a breaker cabinet be electrically connected with this isolation cabinet, its feature is, those breaker cabinets include a blocking lock, those blocking locks share one piece of first key, and each blocking lock only allows this first key to extract or insert in the latched condition.It is pointed out that " permission " in the application refers to the constraint cancelled object, make it have the movable degree of freedom.

Preferably, each isolation cabinet includes an isolating switch and controls the isolation lock of this isolating switch break-make, each breaker cabinet includes a circuit breaker and controls the lock for circuit breaker of this circuit breaker break-make, in each group power distribution cabinet, this lock for circuit breaker and this isolation lock share one piece of second key, this lock for circuit breaker only allows this second key to extract or insert when this circuit breaker disconnects, this isolation lock only allows this second key to extract or insert when this isolating switch is communicated with.

Preferably, this interlocking device comprises two groups of power distribution cabinets.

Preferably, this isolation lock comprises the jam plate that a top board and has the second lockhole, this top board is fixed on the driving shaft of this isolating switch, only when this isolating switch is communicated with, this driving shaft drives this top board to rotate, and then cancellation is pulled to the top of this jam plate, allows the second key in this second lockhole extract after this jam plate rotates an angle or insert.

Preferably, the lock plate that each blocking lock comprises an opening button, a switch knob, a torsion spring plate, a push rod and have the first lockhole, this opening button this push rod that links departs from the pin-and-hole of this lock plate, and then allow this first key to drive this lock plate to move, extract or insert this first lockhole to make this first key.

Preferably, when this first lockhole extracted by this first key, this push rod supports under the pressure of on this lock plate.

Preferably, each blocking lock also comprises a spring, and this torsion spring plate and this spring are used for driving this push rod to insert this pin-and-hole when this pin-and-hole aimed at by this push rod.

Preferably, this circuit breaker comprises a sensitive switch, and this opening button also supports the mode of compeling this torsion spring plate by this push rod of interlock, touches the electric switch-on loop that this sensitive switch cuts off this circuit breaker.

Positive progressive effect of the present invention is: by arranging those blocking locks, and share one piece of first key, each blocking lock only allows this first key to extract or insert in the latched condition, this interlocking device achieves the interlocking between different cabinet, powers and cause power consumption equipment to damage while avoiding many group power distribution cabinets.

Accompanying drawing explanation

Fig. 1 is the structural representation of the interlocking device of present pre-ferred embodiments.

Fig. 2 is the partial schematic diagram of the interlocking device in Fig. 1.

Fig. 3 is the first state diagram of the isolation lock of interlocking device in Fig. 1.

Fig. 4 is the second state diagram of the isolation lock of interlocking device in Fig. 1.

Fig. 5 is the third state figure of the isolation lock of interlocking device in Fig. 1.

Fig. 6 is the front view of the first state of the blocking lock of interlocking device in Fig. 1.

Fig. 7 is the front view of the second state of the blocking lock of interlocking device in Fig. 1.

Fig. 8 is the left view of the first state of the blocking lock of interlocking device in Fig. 1.

Fig. 9 is the left view of the second state of the blocking lock of interlocking device in Fig. 1.

Description of reference numerals:

First isolation cabinet: 1 second isolation cabinet: 2

First breaker cabinet: 3 second breaker cabinets: 4

Driving shaft: 5 sensitive switches: 6

Sub-switching operation hole: 7 handle hole baffle plates: 8

First isolation lock: 10 second isolation locks: 20

First blocking lock: 30 second blocking locks: 40

Jam plate: 101 second lockholes: 102

Top board: 103 first lock for circuit breaker: 300

Opening button: 301 switch knobs: 302

First lockhole: 303 lock plates: 304

Inserted link: 305 torsion spring plates: 306

Push rod: 307 springs: 308

Second lock for circuit breaker: 400 pin-and-holes: 3040

Separating brake dropout top board: 3061 interlocking top boards: 3062

Embodiment

Lift preferred embodiment below, and come by reference to the accompanying drawings clearlyer intactly the present invention to be described.

As shown in Figure 1, the interlocking device of the present embodiment includes two groups of power distribution cabinets, each group power distribution cabinet comprises an isolation cabinet and a breaker cabinet be electrically connected with this isolation cabinet, namely the first isolation cabinet 1, second isolates cabinet 2, first breaker cabinet 3 and the second breaker cabinet 4, wherein the first isolation cabinet 1 and the first breaker cabinet 3 belong to the first power distribution cabinet, and the second isolation cabinet 2 and the second breaker cabinet 4 belong to the second power distribution cabinet.

In order to avoid powering while organizing power distribution cabinet more and causing power consumption equipment to damage, those breaker cabinets include a blocking lock, i.e. the first blocking lock 30 and the second blocking lock 40, those blocking locks share one piece of first key, and each blocking lock only allows this first key to extract or insert in the latched condition.By this structural design, can guarantee only have one group of power distribution cabinet to be that power consumption equipment is powered, power while avoiding many group power distribution cabinets and cause the generation of power consumption equipment damaged condition.

Please refer to Fig. 1 to understand, each isolation cabinet includes an isolating switch and controls the isolation lock of this isolating switch break-make, i.e. the first isolation lock 10 and the second isolation lock 20.Each breaker cabinet includes a circuit breaker and controls the lock for circuit breaker of this circuit breaker break-make, i.e. the first lock for circuit breaker 300 and the second lock for circuit breaker 400.

Because the internal structure of two groups of power distribution cabinets is identical, therefore only need to tell about this first power distribution cabinet, as shown in Figure 2, the operation principle of this second power distribution cabinet repeats no more.

In this first power distribution cabinet, please refer to Fig. 2, this the first isolation lock 10 and this first lock for circuit breaker 300 share one piece of second key, this the first isolation lock 10 only allows this second key to extract or insert when this isolating switch is communicated with, this first lock for circuit breaker 300 only allows this second key to extract or insert when this circuit breaker disconnects.By this structural design, can guarantee when disconnecting power distribution cabinet, according to first cut-off breaker cabinet (or this first lock for circuit breaker 300), disconnect the order of isolation cabinet (or this first isolation lock 10) again, also can guarantee when being communicated with power distribution cabinet, according to being first communicated with isolation cabinet, the order of rear connection breaker cabinet, to realize the object of safe distribution.

In view of this first isolation lock 10 is identical with the internal structure of this first lock for circuit breaker 300, please refer to the operation principle that Fig. 3-5 carries out understanding this first isolation lock 10 in Fig. 2, can analogy understand as this first lock for circuit breaker 300.

As in Figure 3-5, this the first isolation lock 10 comprises the jam plate 101 that a top board 103 and has the second lockhole 102, this top board 103 is fixed on the driving shaft 5 of this isolating switch, only when this isolating switch is communicated with, this driving shaft 5 drives this top board 103 to rotate, and then cancellation is pulled (please refer to Fig. 4) to the top of this jam plate 101, extracts to allow the second key in this second lockhole 102 or inserts after this jam plate 101 rotates an angle.After the second key is extracted, (please refer to Fig. 5), this jam plate 101 pushes up this handle hole baffle plate 8 of pulling, and this handle hole baffle plate 8 cannot be pushed aside, and sub-switching operation hole 7 (please refer to Fig. 3) is blocked, thus cannot realize sub-switching operation.

Please refer to the operation principle that Fig. 6-9 carries out understanding this first blocking lock 30 in Fig. 2.

This first blocking lock 30 comprises opening button 301, switch knob 302, first lockhole 303, lock plate 304, inserted link 305, torsion spring plate 306, push rod 307 and a spring 308.This torsion spring plate 306 comprises separating brake dropout top board 3061 and interlocking top board 3062.

Under locking states, as shown in Figure 8, this torsion spring plate 306 is in relaxed state, this interlocking top board 3062 supports compels this push rod 307, to make this push rod 307 insert in this pin-and-hole 3040 securely, as shown in Figure 6, this push rod 307 and this pin-and-hole 3040 concentric, now this spring 308 is in compressive state.Now, this first key cannot rotate, and therefore cannot extract.

When unblanking, as shown in Figure 9, only need press this opening button 301, supported by this inserted link 305 and compel this separating brake dropout top board 3061, and then drive this interlocking top board 3062 to rotate, now this spring 308 is tending towards lax gradually, and drive this push rod 307 to move, this push rod 307 is made to depart from the pin-and-hole 3040 of this lock plate 304, by rotating this first lockhole 303 sliding pin jam plate 304, make this push rod 307 and this pin-and-hole 3040 sequence (please concrete reference diagram 7), and then reach this push rod 307 and support under the pressure of the object on this lock plate 304.Now, this first lockhole 303 allows this first key to extract or insert this first lockhole 303.When this first key half-twist is extracted from this first lockhole 303, promote this lock plate 304 and move to the position shown in Fig. 7, and then block this switch knob 302, this switch knob 302 cannot be pressed, thus realize cannot close a floodgate mechanically.In view of key only can be extracted from lockhole or be inserted as prior art after rotation one angle, the internal structure of concrete lock core is no longer repeated.

As shown in Figure 9, in this first breaker cabinet 3, this circuit breaker also comprises a sensitive switch 6, when unblanking, this opening button 301 also supports the mode of compeling this interlocking top board 3062 by this push rod 307 of interlock, touch this sensitive switch 6 (a pair normally-closed contact of sensitive switch 6 is serially connected in closing circuit), thus cut off the electric switch-on loop of this circuit breaker, realize cannot closing a floodgate electrically.

During locking, please also refer to Fig. 6 and Fig. 8-9 to understand, by this first lockhole 303 of reverse rotation, this torsion spring plate 306 and this spring 308 drive this push rod 307 to insert in this pin-and-hole 3040 when this pin-and-hole 3040 aimed at by this push rod 307, are now in locking states (asking concrete reference diagram 6).

By using this first blocking lock 30 and this second blocking lock 40, and share one piece of first key, each blocking lock only allows this first key to extract or insert in the latched condition, this interlocking device achieves the interlocking electrically and mechanically between different cabinet, reduce the probability of misoperation, power while avoiding many group power distribution cabinets and cause power consumption equipment to damage.

Although the foregoing describe the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present invention and essence, can make various changes or modifications to these execution modes, but these change and amendment all falls into protection scope of the present invention.

Claims

1. an interlocking device, it includes at least two group power distribution cabinets, each group power distribution cabinet comprises an isolation cabinet and a breaker cabinet be electrically connected with this isolation cabinet, it is characterized in that, those breaker cabinets include a blocking lock, those blocking locks share one piece of first key, and each blocking lock only allows this first key to extract or insert in the latched condition; Each isolation cabinet includes an isolating switch and controls the isolation lock of this isolating switch break-make, each breaker cabinet includes a circuit breaker and controls the lock for circuit breaker of this circuit breaker break-make, in each group power distribution cabinet, this lock for circuit breaker and this isolation lock share one piece of second key, this lock for circuit breaker only allows this second key to extract or insert when this circuit breaker disconnects, this isolation lock only allows this second key to extract or insert when this isolating switch is communicated with; This interlocking device comprises two groups of power distribution cabinets; The lock plate that each blocking lock comprises an opening button, a switch knob, a torsion spring plate, a push rod and have the first lockhole, this opening button this push rod that links departs from the pin-and-hole of this lock plate, and then allow this first key to drive this lock plate to move, extract or insert this first lockhole to make this first key.

2. interlocking device as claimed in claim 1, is characterized in that, when this first lockhole extracted by this first key, this push rod supports under the pressure of on this lock plate.

3. interlocking device as claimed in claim 1, it is characterized in that, each blocking lock also comprises a spring, and this torsion spring plate and this spring are used for driving this push rod to insert this pin-and-hole when this pin-and-hole aimed at by this push rod.

4. as the interlocking device in claim 1-3 as described in any one, it is characterized in that, this circuit breaker comprises a sensitive switch, and this opening button also supports the mode of compeling this torsion spring plate by this push rod of interlock, touches the electric switch-on loop that this sensitive switch cuts off this circuit breaker.