CN2258668Y

CN2258668Y - High-voltage comprehensive starting control cubicle

Info

Publication number: CN2258668Y
Application number: CN 95235203
Authority: CN
Inventors: 盛新民; 翟如清; 赵斌
Original assignee: BOSHAN LIFTING ELECTRIC APPLIANCES FACTORY
Current assignee: BOSHAN LIFTING ELECTRIC APPLIANCES FACTORY
Priority date: 1995-11-23
Filing date: 1995-11-23
Publication date: 1997-07-30
Anticipated expiration: 2005-11-23

Abstract

The utility model provides a high-voltage comprehensive starting control cubicle, which adopts a vacuum contactor as a main switch; a rotor loop adopts a frequency sensitive rheostat as starting equipment. On the basis of the original over current, the original overload, the original low-voltage protection and the original starting, a bearing high temperature protection circuit, a manual starting circuit, a lightning arrester and a misoperation preventing travel switch are additionally arranged. The bearing high temperature protection circuit is in external connection with a 220V power supply and is connected with an alarm circuit; the manual starting circuit is respectively connected with a vacuum contactor controlling circuit and a frequency sensitive rheostat controlling circuit. Having the advantages of good starting performance, the utility model can be used for the starting and the control in cement industries, mill processing industries and the other technical field of equipment.

Description

High pressure synthesis starting control cubicle

The utility model provides a kind of high pressure synthesis starting control cubicle, belongs to high-voltage electrical apparatus control switch device.

At present; the existing ball mill that is used for; belt conveyer; rolling mill; the technology report of the high pressure synthesis starting control cubicle of heave-load devices such as cement industry processing grinding machine; as the former starting cabinet of producing in our factory; adopt vacuum contactor to make main switch; rotor loop is done starting equipment with frequency sensitive trheostat; and be provided with starting cabinet mains switch control and overcurrent; overload; low-voltage variation and sound and light of alarm; also has power supply; voltage; current measurement deixises such as electric current; defective is that door lock is common door lock; there is unsafe factor; no bearing high temperature protection; functions such as instantaneous overvoltage protection; and have only a kind of operation control mode of automatic starting, use has inconvenience more.

The purpose of this utility model is to provide a kind of safe and convenient to use on the existing product basis, the high pressure synthesis starting control cubicle that protective value is perfect, starting performance is good.

The purpose of this utility model is achieved in that

A kind of high pressure synthesis starting control cubicle; comprise the motor major loop; the vacuum contactor control circuit; protective circuit; warning circuit; automatic start-up circuit and frequency sensitive trheostat control circuit; wherein; protective circuit comprises overload; overcurrent; low-voltage protection circuit; external 220V power supply; be connected with warning circuit; and by overcurrent or under-voltage replay and motor major loop control connection; the external 220V power supply of vacuum contactor control circuit; and through the normal opened contact of vacuum contactor GC respectively with automatic start-up circuit and motor major loop control connection; automatic start-up circuit connects with the control of motor major loop through the frequency sensitive trheostat control circuit; set up travel switch XK; bearing high temperature protection circuit and manual starting circuit; the external 220V power supply of bearing high temperature protection circuit; and be connected with warning circuit, the manual starting circuit is connected with the frequency sensitive trheostat control circuit with the vacuum contactor control circuit respectively.

Described high pressure synthesis starting control cubicle, travel switch XK is located on the control cubicle door lock, is connected with the input of rectifier bridge GZ in rotating switch 3HK and the vacuum contactor control circuit respectively.

Described high pressure synthesis starting control cubicle, bearing high temperature protection circuit is formed by connecting by electric contact thermometer WJ and auxiliary relay 3ZJ, the external 220V power supply of its input, the input of output circuit taking alarm.

Described high pressure synthesis starting control cubicle, the manual starting circuit is formed in parallel by the self-sustaining normal opened contact of normally open push button switch QA2 and A.C. contactor 4ZJ, through the external 220V power supply of the normal opened contact of vacuum contactor GC, output is connected with the frequency sensitive trheostat control circuit its input through rotating switch 3HK control.

Described high pressure synthesis starting control cubicle is connected to lightning arrester FS on the stator of motor D.

The utility model has compared with prior art been set up defencive functions such as bearing high temperature protection, lightning arrester, anti-misoperation travel switch, and has been increased manual controlled function, and performance is more perfect, and is safe and convenient to use.

Fig. 1 is a schematic block circuit diagram of the present utility model.

Fig. 2 is the circuit diagram of the utility model motor major loop part.

Fig. 3 is the utility model vacuum contactor control circuit, bearing high temperature protection circuit and relevant warning circuit, frequency sensitive trheostat control circuit, manually reaches the circuit diagram of automatic actuating section.

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

A kind of high pressure synthesis starting control cubicle; comprise motor major loop 1; vacuum contactor control circuit 2; protective circuit 3; warning circuit 4; automatic start-up circuit 5 and frequency sensitive trheostat control circuit 6; wherein protective circuit 3 comprises overload; overcurrent; low-voltage protection circuit; external 220V power supply; be connected with warning circuit 4; and by overcurrent or under-voltage replay and motor major loop 1 control connection; vacuum contactor control circuit 2 external 220V power supplys; and through the normal opened contact of vacuum contactor GC respectively with automatic start-up circuit 5 and motor major loop 1 control connection; automatic start-up circuit 5 is through frequency sensitive trheostat control circuit 6 and motor major loop 1 control connection; set up travel switch XK; bearing high temperature protection circuit 7 and manual starting circuit 8; bearing high temperature protection circuit 7 external 220V power supplys; and be connected with warning circuit 4, manual starting circuit 8 is connected with frequency sensitive trheostat control circuit 6 with vacuum contactor control circuit 2 respectively.

Motor major loop 1 comprises that the rotor of motor D, frequency sensitive trheostat BP, current transformer 1LHa, 1LHc, 2LHa, 2LHc, voltage transformer YH and lightning arrester FS, motor D connects the normal opened contact of frequency sensitive trheostat BP and A.C. contactor JSC respectively; its stator is through lightning arrester FS ground connection, and connects protective circuit 3 through normal opened contact, the voltage transformer YH of current transformer 2LHa, 2LHc, 1LHa, 1LHc, vacuum contactor GC successively.

Vacuum contactor control circuit 2 comprises rectifier bridge GZ, one input end is successively through auxiliary relay 2ZJ, the normally closed contact of 1ZJ connects travel switch XK one end, the other end of travel switch XK meets double-pole switch 2HK through rotating switch 3HK, the external 220V power supply of the other end of double-pole switch 2HK, rectifier bridge GZ one output connects normal opened contact and Chang Kai button QA1 one end of vacuum contactor GC respectively through normally closed button TA, the other end of often opening button QA1 with after the other end of vacuum contactor GC normal opened contact is connected, connects vacuum contactor GC one end through the normally closed contact of A.C. contactor JSC, the other end of vacuum contactor GC is respectively through its normally closed contact, resistance R connects another output of rectifier bridge GZ.

Bearing high temperature protection circuit 3 is made up of electric contact thermometer WJ, auxiliary relay 3ZJ and normal opened contact; rotating switch 3HK meets electric contact thermometer WJ and switch 4HK respectively; the other end of electric contact thermometer WJ is connected with auxiliary relay 3ZJ and normal opened contact, indicator light 3HD respectively; electric bell DL connects 1 position of switch 4HK through the normal opened contact of auxiliary relay 3ZJ, and connects 2 positions of switch 4HK successively through the normally closed contact of auxiliary relay 3ZJ, 2ZJ and 1ZJ.

Automatic start-up circuit is formed in parallel by the normal opened contact of AC relay 4ZJ and auxiliary relay 3SJ, the manual starting circuit is formed in parallel by the normal opened contact of often opening button QA2 and AC relay 4ZJ, 3 ends of automatic start-up circuit and 4 ends of manual starting circuit are respectively successively through rotating switch 3HK, the normal opened contact of vacuum contactor GC meets double-pole switch 2HK, after joining, its other end meets A.C. contactor 4ZJ, and 3 ends of automatic start-up circuit also meet auxiliary relay 2SJ respectively through the normally closed contact of A.C. contactor JSC, the end of 3SJ, auxiliary relay 2SJ, 3SJ, the termination double-pole switch 2HK of the other end of A.C. contactor 4ZJ and AC relay JSC, the other end of AC relay JSC connects the normal opened contact of vacuum contactor GC respectively through the normal opened contact of its normal opened contact and A.C. contactor 4ZJ, the normal opened contact of vacuum contactor GC is also through another normally closed contact of AC relay JSC, normal opened contact respectively with indicator light 6HD, 7HD series connection back is in parallel, meets double-pole switch 2HK then.

During work, the double-pole switch 2HK that closes, external 220V power supply, when rotating switch 3HK sky connect, except that the motor major loop, the The whole control cabinet was not worked, otherwise vacuum contactor control circuit, protective circuit, all external 220V power supply of warning circuit.When electric contact thermometer WJ records temperature closed conducting when too high, auxiliary relay 3ZJ gets electric, its normal opened contact closure, send sound and light alarm, switch 4HK is in 1 position, reports to the police if remove, and switch 4HK is placed 2 positions, after treating that bearing temperature is reduced to normal value, auxiliary relay 3ZJ resets, and electric bell DL gets electric through the normally closed contact of auxiliary relay 3ZJ, and then switch 4HK is placed 1 position, electric bell DL outage stops to report to the police, and whole warning circuit reenters the preparation alarm condition.When rotating switch 3HK places automatic start position 3, press the button QA1, vacuum contactor GC adhesive, indicator light 6HD is bright, auxiliary relay 2SJ, 3SJ action simultaneously causes AC relay 4ZJ action, its normal opened contact closure, AC relay JSC action, make the closed short circuit of its normal opened contact that is connected with frequency sensitive trheostat BP, excision frequency sensitive trheostat BP, indicator light 6HD goes out simultaneously, 7HD is bright, realizes starting automatically; When selecting manual starting, rotating switch 3HK places 4 positions, press the button QA1 with automated manner, indicator light 6HD is bright, motor D is in starting state, when motor D reaches running status, presses the button QA2 and gives A.C. contactor 4ZJ power supply, make its action triggers AC relay JSC action, excision frequency sensitive trheostat BP realizes manual starting.When need stop motor, press the button TA, vacuum contactor GC disjunction, motor stops, and indicator light 7HD goes out, A.C. contactor JSC disjunction simultaneously, rotor loop inserts frequency sensitive trheostat again, is ready to starting next time.Travel switch XK is located on the control cubicle door lock, if open control cubicle, must disconnect travel switch XK earlier, has so both prevented that on-load from closing a floodgate, and prevented charged opening the door again.Simultaneously, be connected to lightning arrester FS on the stator of motor D, prevent instantaneous overvoltage.

Claims

1; a kind of high pressure synthesis starting control cubicle; comprise motor major loop (1); vacuum contactor control circuit (2); protective circuit (3); warning circuit (4); automatic start-up circuit (5) and frequency sensitive trheostat control circuit (6); wherein; protective circuit (3) comprises overload; overcurrent; low-voltage protection circuit; external 220V power supply; be connected with warning circuit (4); and by overcurrent or under-voltage replay and motor major loop (1) control connection; the external 220V power supply of vacuum contactor control circuit (2); and through the normal opened contact of vacuum contactor GC respectively with automatic start-up circuit (5) and motor major loop (1) control connection; it is characterized in that: set up travel switch XK; bearing high temperature protection circuit (7) and manual starting circuit (8); the external 220V power supply of bearing high temperature protection circuit (7); and be connected with warning circuit (4), manual starting circuit (8) is connected with frequency sensitive trheostat control circuit (6) with vacuum contactor control circuit (2) respectively.

2, high pressure synthesis starting control cubicle according to claim 1, it is characterized in that: travel switch XK is located on the control cubicle door lock, is connected with the input of rectifier bridge GZ in rotating switch 3HK and the vacuum contactor control circuit (2) respectively.

3, high pressure synthesis starting control cubicle according to claim 1; it is characterized in that: bearing high temperature protection circuit (7) is formed by connecting by electric contact thermometer WJ and auxiliary relay 3ZJ; the external 220V power supply of its input, the input of output circuit taking alarm (4).

4, high pressure synthesis starting control cubicle according to claim 1, it is characterized in that: manual starting circuit (8) is formed in parallel by the self-sustaining normal opened contact of normally open push button switch QA2 and A.C. contactor 4ZJ, through the external 220V power supply of the normal opened contact of vacuum contactor GC, output is connected with frequency sensitive trheostat control circuit (5) its input through rotating switch 3HK control.

5, high pressure synthesis starting control cubicle according to claim 1 is characterized in that: be connected to lightning arrester FS on the stator of motor D.