CN2310376Y

CN2310376Y - Indoor electric insulating switch

Info

Publication number: CN2310376Y
Application number: CN 97236704
Authority: CN
Inventors: 李�浩
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-07-31
Filing date: 1997-07-31
Publication date: 1999-03-10
Anticipated expiration: 2007-07-31

Abstract

The utility model relates to an indoor electric insulating switch, comprising a switch main body 1, a motor 4, a speed reducing case 9 and a control case 8. One end of the speed reducing case 9 is connected with the motor 4, and the other end is connected with a main shaft 12 of the switch body. The interior of the control case 8 is provided with a control circuit which can control the normal rotation and the reverse rotation of the motor 4. Thus, the switch main body 1 is driven to open or close. The utility model has the advantages of convenient installation, compact structure, reliable motion, long service life, etc. In addition, electric operating function and hand-operated operating function can be realized by electromagnetic clutches 3 which are additionally arranged on each of both end of the switch body main shaft and controlled by a same switch.

Description

Indoor electric isolating switch

The utility model relates to the indoor electric isolating switch of a kind of switching device, particularly a kind of 6-20KV.

The indoor isolator of existing 6-20KV is generally all by handle, connecting rod manual operation.Domestic also have mode that minority producer utilizes the cam-type spring energy-storage in low-pressure side by the connecting rod electric operating, but this electrical means exist impulsive force big, shortcomings such as complexity are installed.

The purpose of this utility model provides a kind of simple in structure, installs, indoor electric isolating switch easy to use.

For achieving the above object, the utility model adopts following structure:

Except that the switch body, the utility model also comprises motor, reduction box and control cabinet, and reduction box one end links to each other with motor, the other end links to each other with the main shaft of Switch main body, control circuit is arranged in the control cabinet, may command motor forward or reverse, and then drive Switch main body and divide or close.

In order can manually to operate again by electric operating, can respectively install an electromagnetic clutch additional at the utility model Switch main body main shaft two ends, one is connected on the Switch main body main shaft end that links to each other with reduction box, be positioned between the two, another is connected on the other end of Switch main body main shaft, and link to each other with a manual handle, the branch of two electromagnetic clutchs, close by single-pole double-throw switch (SPDT) K select control.

Compared with prior art, the utlity model has advantages such as easy for installation, compact conformation, reliable in action, long service life, also can realize electronic, manual two kinds of operating functions.

The utility model is described in further detail below in conjunction with embodiment and accompanying drawing thereof.

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

Fig. 2 is the A-A cutaway view (amplifying the back half-twist) of Fig. 1.

Fig. 3 is the electrical schematic diagram of the utility model control circuit.

Fig. 4 is the schematic diagram in the positive and negative rotation of motor loop.

Fig. 5 is the control loop schematic diagram of electromagnetic clutch.

As shown in Figure 1 and Figure 2, the described indoor electric isolating switch of embodiment is made of Switch main body 1, two electromagnetic clutchs 3, motor 4, reduction box 9, manual handle 5 and control cabinets 8, in the control cabinet 8 control circuit is arranged.Two electromagnetic clutchs 3 are connected on Switch main body main shaft 12 two ends respectively, and the electromagnetic clutch 3 in left side links to each other with manual handle 5, and 3 of the electromagnetic clutchs on right side connect reduction box 9 and motor 4 in turn.Control cabinet 8 joins by stube cable 7 and the binding post 2 that is electrically connected with motor 4 that is located on the Switch main body 1, control motor 4 forward or reverse.

As shown in Figure 5, two electromagnetic clutchs 3 are powered separately by the 24V storage battery, and its electrical connection is: two electromagnetic clutchs and connect after contact with single-pole double-throw switch (SPDT) K again.Like this, by the K switch branch that is two electromagnetic clutchs 3 of may command, close, thereby select electronic or manual manipulation mode.When K switch was allocated to 1, right side electromagnetic clutch 3 closed, and motor 4 can directly drive Switch main body main shaft 12 and realize electric operating.This moment, the left side electromagnetic clutch was 3 minutes, and the rotation of Switch main body main shaft 12 can not influence man-operating mechanism.When the needs manual operation, K switch is allocated to 2, this moment, left side electromagnetic clutch 3 closed, and can carry out divide-shut brake by manual handle 5 console switch body main shafts 12, and method of operation is identical with existing manual manipulation mode.The right side electromagnetic clutch is 3 minutes simultaneously, and the main shaft 12 of Switch main body breaks away from reduction box 9.

As shown in Figure 4, the positive and negative rotation of motor loop is made of four normally open contacts and the motor 4 of A.C. contactor 1ZJ and 2ZJ, and motor 4 is a direct current permanent magnet motor.This loop needs separately for the 240V direct current, its concrete connecting relation is: the normally open contact of two A.C. contactor 1ZJ, 2ZJ that are connected in series in turn is connected with each other with the normally open contact of two A.C. contactor 2ZJ, 1ZJ that are connected in series in turn, the positive pole of motor 4 is connected between normally open contact 1ZJ and the 2ZJ, and negative pole then is connected between normally open contact 2ZJ and the 1ZJ.

As shown in Figure 3, the control circuit in the control cabinet 8 mainly comprises closing circuit parallel with one another, sub-gate circuit, the spacing loop of combined floodgate, the spacing loop of separating brake and isolating transformer GB.Closing circuit is in series by the normally closed interlock of button 1AN, A.C. contactor 1ZJ and A.C. contactor 2ZJ, 3ZJ and 4ZJ, sub-gate circuit is formed by the normally closed interlock serial connection of button 2AN, A.C. contactor 2ZJ and A.C. contactor 1ZJ, 5ZJ and 6ZJ, the spacing loop of closing a floodgate is made of the A.C. contactor 3ZJ and the 4ZJ of travel switch K1 and two parallel connections, and the spacing loop of separating brake is made of the A.C. contactor 5ZJ and the 6ZJ of travel switch K2 and two parallel connections.

Referring to Fig. 2, in fact travel switch K1 and K2 are a spring contact, are installed in the two ends up and down on Switch main body 1 right side by collets 6.Corresponding with it, be fixed with two spacing conducting rods on the Switch main body main shaft 12, one is that 11, one of spacing conducting rods of combined floodgate are the spacing conducting rods 13 of separating brake.When Switch main body 1 combined floodgate put in place, combined floodgate conducting rod 11 touched travel switch K1, can connect the spacing loop of combined floodgate in the control circuit, and feed motion is stopped automatically.When Switch main body 1 separating brake put in place, the spacing conducting rod 13 of separating brake contacted with travel switch K2, so promptly connected the spacing loop of separating brake in the control circuit, and the separating brake action is stopped automatically.

For the ease of indicating operating status, control circuit also comprises the combined floodgate in parallel with above-mentioned loop put in place indication, separating brake put in place indication, closing operation indication, four loops of sub-switching operation indication.Combined floodgate puts in place and indicates normally open contact in sequential series form of loop by indicator light D1 and A.C. contactor 3ZJ and 4ZJ, separating brake puts in place and indicates normally open contact in sequential series form of loop by indicator light D2 and A.C. contactor 5ZJ and 6ZJ, closing operation indication loop is made of the normally open contact of indicator light D3 and A.C. contactor 1ZJ, and the normally open contact of sub-switching operation indication loop indicator light D4 and A.C. contactor 2ZJ constitutes.

Since in the control circuit and met isolating transformer GB, be zero-bit so can guarantee Switch main body one end, the safety of the guarantee person and equipment.

Brief description is the electrically operated course of work of this indoor electric isolating switch once:

K is allocated to 1 with single-pole double-throw switch (SPDT), makes electromagnetic clutch 3 adhesives that link to each other with Switch main body main shaft 12 right-hand members.Press the button 1AN then, A.C. contactor 1ZJ closes, and it is connected on two normally open contact closures in the positive and negative rotation of the motor loop, and motor 4 beginnings are just changeed, and drives Switch main body main shaft 12 and rotates, and makes it begin to close a floodgate.At this moment, A.C. contactor 1ZJ is connected on the normally open contact closure in the closing operation indication loop, and indicator light D3 is bright, and the expression feed motion carries out.Simultaneously, its normally closed interlock that is serially connected in the sub-gate circuit disconnects, and guarantees carrying out smoothly of feed motion, prevents misoperation.

After combined floodgate put in place, the spacing conducting rod 11 of the combined floodgate on the Switch main body main shaft 12 touched travel switch K1, connects the spacing loop of closing a floodgate, A.C. contactor 3ZJ, 4ZJ get, its normally closed interlock that is serially connected in the closing circuit disconnects, and cuts off closing circuit, closes a floodgate promptly to accuse and finishes.Closing a floodgate simultaneously puts in place indicates the loop to connect, and closing operation indication loop disconnects, and indicator light D1 is bright, and D3 goes out.

During separating brake, press the button 2, A.C. contactor 2ZJ adhesive, it is connected on two normally open contact closures in the positive and negative rotation of the motor loop, and motor 4 begins counter-rotating, drives Switch main body main shaft 12 and rotates, and makes it begin separating brake.At this moment, A.C. contactor 2ZJ is connected on the normally open contact closure in the sub-switching operation indication loop, and indicator light D4 is bright, and the action of expression separating brake is carried out.Simultaneously, its normally closed interlock that is serially connected in the closing circuit disconnects, and guarantees carrying out smoothly of separating brake action, prevents misoperation.

After separating brake puts in place, the spacing conducting rod 13 of separating brake on the Switch main body main shaft 12 touches travel switch K2, connect the spacing loop of separating brake, A.C. contactor 5ZJ, 6ZJ get electric, and its normally closed interlock that is serially connected in the sub-gate circuit disconnects, cut off sub-gate circuit, separating brake is promptly accused and is finished, and separating brake puts in place and indicates the loop to connect simultaneously, and sub-switching operation indication loop disconnects, indicator light D2 is bright, and D4 goes out.

Claims

1, a kind of indoor electric isolating switch, it is characterized in that except that switch body 1, also comprise motor 4, reduction box 9 and control cabinet 8, reduction box 9 one ends link to each other with motor 4, the other end links to each other with the main shaft 12 of Switch main body, in the control cabinet 8 control circuit is arranged, may command motor 4 forward or reverse, and then drive Switch main body 1 minute or close.

2, indoor electric isolating switch as claimed in claim 1 is characterized in that: Switch main body main shaft 12 two ends also respectively are connected to 3, one of electromagnetic clutchs and are connected on Switch main body main shaft 12 end that links to each other with reduction box 9, are positioned between the two; Another is connected on the other end of Switch main body main shaft 12, and links to each other with a manual handle 5, the branch of two electromagnetic clutchs 3, close by single-pole double-throw switch (SPDT) K select control.

3, indoor electric isolating switch as claimed in claim 1 or 2, it is characterized in that: described control circuit comprises closing circuit in parallel, sub-gate circuit, the spacing loop of closing a floodgate, spacing loop of separating brake and isolating transformer GB, closing circuit is by button 1AN, A.C. contactor 1ZJ and A.C. contactor 2ZJ, the normally closed interlock of 3ZJ is in series, sub-gate circuit is then by button 2AN, A.C. contactor 2ZJ and A.C. contactor 1ZJ, the normally closed interlock serial connection of 5ZJ forms, the spacing loop of closing a floodgate comprises the travel switch K1 and the A.C. contactor 3ZJ of serial connection, and the spacing loop of separating brake then comprises the travel switch K2 and the A.C. contactor 5ZJ of series connection.

4, indoor electric isolating switch as claimed in claim 3, it is characterized in that: the spacing loop of the combined floodgate of described control circuit also comprises an A.C. contactor 4ZJ in parallel with A.C. contactor 3ZJ, and the normally closed interlock of this A.C. contactor 4ZJ is serially connected in the closing circuit.

5, indoor electric isolating switch as claimed in claim 3, it is characterized in that: the spacing loop of the separating brake of described control circuit also comprises an A.C. contactor 6ZJ in parallel with A.C. contactor 5ZJ, and the normally closed interlock of this A.C. contactor 6ZJ is serially connected in the sub-gate circuit.