CN104052339A - Electrical control loop and control method of motor of dehydrator - Google Patents
Electrical control loop and control method of motor of dehydrator Download PDFInfo
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- CN104052339A CN104052339A CN201410315896.2A CN201410315896A CN104052339A CN 104052339 A CN104052339 A CN 104052339A CN 201410315896 A CN201410315896 A CN 201410315896A CN 104052339 A CN104052339 A CN 104052339A
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- contactor
- motor
- open contact
- normally open
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Abstract
The invention discloses an electrical control loop and control method of a motor of a dehydrator. The electrical control loop is composed of a motor main loop body and an electrical control loop body, three phase wire inlet ends A, B and C of the motor main loop body are connected with a contactor C1, a contactor C2 and a contactor C3 respectively through breakers K, the contactor C1, the contactor C2 and the contactor C3 are connected with the phase A, the phase B and the phase C of a winding of the motor M respectively, and the electrical control loop of the motor is composed of a branch loop 1, a branch loop 2, a branch loop 3, a branch loop 4 and a branch loop 5. According to the electrical control loop, the dehydrator can be steadily started, the shutdown time can be reduced in the shutdown process, the small power is adopted to drive the dehydrator to rotate in the starting process of the dehydrator, and therefore the dehydrator is accelerated slowly to reach the normal rotating speed. When the dehydrator is started, steady starting is achieved. When the dehydrator is shut down, a reverse voltage is added to the motor, the motor is affected by reverse rotating force to rapidly stop rotating, and therefore the inertial rotating time of the motor is reduced, and therefore the speed-down process and time are reduced.
Description
Technical field
The electric control loop and the control method that the present invention relates to dewaterer motor, be specifically related to a kind of casting
Electric control loop and the control method of the motor of dewaterer for part smear metal.
Background technology
Mechanical processing of casting is generally all first casting, then uses Metal Cutting Machine Tool cut.In cutting process, can produce the smear metal that is stained with cutting fluid of some.Borings can refuse be cast as foundry goods again.The case-iron shavings that particularly contains high alloy composition, as the case-iron shavings of the cast iron of the models such as nickelic, high SiMo.But in smear metal, because containing cutting fluid, can not directly add melting furnace to dissolve, so will first dewater and drying and processing after recovery.
De-liquid method is all generally that centrifugal force can be removed most of raffinate in smear metal by centrifugal process, but is loose shape due to smear metal in adding dewaterer time, can not accomplish that uniform balance places in dewaterer.While reaching dehydrating speed by Belt Transmission rotating part from halted state moment when motor start-up, because rotating part will not be balance when inactive state moment is driven High Rotation Speed, in start-up course, rock very severe; And de-liquid can or not stop with motor because of the effect of inertia force when finishing motor and stopping operating, but lower gradually for some time rotating speed, slowly stop again, this has just affected the efficiency of de-liquid.
Summary of the invention
The object of this invention is to provide electric control loop and the control method of the motor of dewaterer for a kind of foundry goods smear metal, while using the control method of this control loop can make dewaterer start steadily and shut down, reduce downtime.Dewaterer adopts decompression starting loop while starting, with smaller power, drive dewaterer rotation,
Dewaterer is slowly accelerated.When dewaterer reaches certain acceleration through the acceleration rotation of a blink, then automatically reply normal power and rotate, while making like this dewaterer start, reach smooth starting.When dewaterer is shut down, on motor, add a reverse voltage, make rotating part be subject to reverse resistance, thereby reduce run-down time, reduce reduction of speed process.
Technical scheme of the present invention is:
An electric control loop for dewaterer motor, is comprised of motor major loop and electric control loop.
(1), the circuit of motor major loop is as follows:
The three-phase end of incoming cables A of AC power 380V, three terminals 1,2,3 of B, C are all connected with circuit breaker K, the leading-out terminal of circuit breaker K 4,5,6 respectively successively with contactor C
1three normally open contact C
1-1, C
1-2, C
1-3, contactor C
2three normally open contact C
2-1, C
2-2, C
2-3with contactor C
3three normally open contact C
3-3, C
3-2, C
3-1be connected.
Described contactor C
1three normally open contact C
1-1, C
1-2and C
1-3three leading-out terminals 7,8,9 respectively successively with three end of incoming cables A of motor M winding
1, B
1, C
1be connected.
Described contactor C
2three normally open contact C
2-1, C
2-2and C
2-3three leading-out terminals 7,8,9 respectively successively with three end of incoming cables A of three windings of motor M
1, B
1, C
1be connected.
Described contactor C
3three normally open contact C
3-1, C
3-2and C
3-3three leading-out terminals 7,8,9 respectively successively with three end of incoming cables A of three windings of motor M
1, B
1, C
1be connected.Described contactor C
2three normally open contact C
2-1, C
2-2and C
2-3three leading-out terminals 7,8,9 respectively successively with contactor C
1three normally closed interlock C
1-5, C
1-6and C
1-7be connected.
Described contactor C
1three normally closed interlock C
1-5, C
1-6and C
1-7three leading-out terminals 14,15,16 respectively successively with contactor C
3three normally closed interlock C
3-4, C
3-5and C
3-6three ends of incoming cables be connected.
Described contactor C
3three normally closed interlock C
3-4, C
3-5and C
3-6three leading-out terminals 18,19,17 respectively successively with contactor C
2three normally closed interlock C
2-6, C
2-7and C
2-5three ends of incoming cables be connected.
Described contactor C
2three normally closed interlock C
2-5, C
2-6and C
2-7three leading-out terminals be all connected with center line N.
Described contactor C
3three normally closed interlock C
3-4, C
3-5and C
3-6three leading-out terminals 18,19,17 respectively successively with three leading-out terminal B of three windings of motor M
2, C
2, A
2be connected.
Described contactor C
2three normally closed interlock C
2-5, C
2-6and C
2-7three ends of incoming cables 17,18,19 respectively successively with three leading-out terminal A of three windings of motor M
2, B
2, C
2be connected.
(2), the circuit of motor electric control loop is as follows:
The single-phase leading-out terminal 4 of circuit breaker K and the fuse R of electric control loop
2be connected.Fuse R
2leading-out terminal 20 be connected with each end of incoming cables of Zhi Huilu 1, Zhi Huilu 2, Zhi Huilu 3, Zhi Huilu 4 and Zhi Huilu 5 respectively.Each leading-out terminal of Zhi Huilu 1, Zhi Huilu 2, Zhi Huilu 3, Zhi Huilu 4 and Zhi Huilu 5 is all connected with center line N.
The circuit diagram of described Zhi Huilu 1 is as follows: the leading-out terminal 21 and contactor C of often opening button QA
2normally closed interlock C
2-8be connected.Normally closed interlock C
2-8leading-out terminal 28 and contactor C
1coil be connected.Contactor C
1normally open contact C
1-4two ends be connected with the two ends of often opening button QA respectively.Time relay sj
1coil two ends respectively with contactor C
1the two ends of coil be connected.
The circuit diagram of described Zhi Huilu 2 is as follows: leading-out terminal 22 and the time relay sj of normally closed button TA
1normally open contact SJ
1-1be connected.Normally open contact SJ
1-1leading-out terminal 23 and time relay sj
2normally closed interlock SJ
2-2be connected.Normally closed interlock SJ
2-2leading-out terminal 29 and contactor C
2coil be connected.Time relay sj
2coil two ends respectively with contactor C
2the two ends of coil be connected.Contactor C
2normally open contact C
2-4two ends respectively with normally open contact SJ
1-1two ends be connected and form self-keeping circuit.
The circuit diagram of described Zhi Huilu 3 is as follows: time relay sj
2normally open contact SJ
2-1leading-out terminal 24 and time relay sj
3normally closed interlock SJ
3-2end of incoming cables be connected.Normally closed interlock SJ
3-2leading-out terminal 30 and auxiliary relay J
1the end of incoming cables of coil be connected.Contactor C
3two ends and the auxiliary relay J of coil
1the two ends of coil be connected.Time relay sj
3coil two ends also with auxiliary relay J
1the two ends of coil be connected.Auxiliary relay J
1normally open contact J
1-1two ends respectively with time relay sj
2normally open contact SJ
2-1two ends be connected and form self-keeping circuit.
The circuit diagram of described Zhi Huilu 4 is as follows: time relay sj
3normally open contact SJ
3-1leading-out terminal 26 and time relay sj
4normally closed interlock SJ
4-1be connected.Normally closed interlock SJ
4-1leading-out terminal 32 and auxiliary relay J
2coil be connected.Auxiliary relay J
2normally open contact J
2-2two ends respectively with time relay sj
3normally open contact SJ
3-1two ends be connected and form self-keeping circuit.
The circuit diagram of described Zhi Huilu 5 is as follows: auxiliary relay J
2normally open contact J
2-1leading-out terminal 27 be connected with signal lamp D.Time relay sj
4the two ends of coil be connected with the two ends of signal lamp D respectively.
A kind of electric control method of dewaterer motor.
During work, the circuit breaker K switch that first closes, switches on power.Press and in Zhi Huilu 1, often open button QA.Contactor C
1coil obtains electric.Contactor C
1four normally open contact C
1-1, C
1-2, C
1-3and C
1-4all adhesives.Contactor C
1three normally closed interlock C
1-5, C
1-6and C
1-7all disconnect.The three phase winding A of motor M
1, B
1, C
1end of incoming cables 7,8,9 by three contact C of adhesive
1-1, C
1-2and C
1-3with power connection.The three phase winding A of motor M
2, B
2, C
3three leading-out terminals 17,18,19 by contactor C
2three normally closed interlock C
2-5, C
2-6and C
2-7all connect with center line N.Motor M obtains electric rotation, normally open contact C
1-4after conducting in self-sustaining state.Because three phase windings of motor M become star connection, so voltage between phases is 220V when motor M starts to rotate, torque is less, only have total head 0.58 times, so rotating speed is slower when motor M drives dewaterer to start from inactive state, rotating speed slowly increases until motor M arrives rated speed level.When dewaterer starts like this, just reached smooth starting.
At contactor C
1coil obtain electric time, time relay sj
1coil also electric and start timing.Work as time relay sj
1the time of setting then, the normally closed interlock C in Zhi Huilu 1
2-8disconnect and make Zhi Huilu 1 power-off, the contactor C after Zhi Huilu 1 power-off in Zhi Huilu 1
1and time relay sj
1all reset.Contactor C
1four normally open contact C
1-1, C
1-2, C
1-3and C
1-4all disconnect contactor C
1three normally closed interlock C
1-5, C
1-6, C
1-7all recover conducting.Now motor M dead electricity stall.
Work as time relay sj
1the time of setting then, the time relay sj in Zhi Huilu 2
1normally open contact SJ
1-1it is electric that adhesive obtains Zhi Huilu 2.Zhi Huilu 2 obtains the electric contactor C that makes
2coil obtain electric.Contactor C
2coil obtain after electric and make contactor C
2four normally open contact C
2-1, C
2-2, C
2-3and C
2-4all adhesives.Contactor C
2coil obtain after electric and make contactor C
2three normally closed interlock C
2-5, C
2-6, C
2-7all disconnect.The leading-out terminal A of motor M now
2, B
2, C
2all disconnect with center line N.Contactor C
2three normally open contact C
2-1, C
2-2, C
2-3after adhesive, make three normally open contact C
2-1, C
2-2, C
2-3three leading-out terminals 7,8,9 successively respectively with the three phase winding A of motor M
1, B
1, C
1end of incoming cables be connected, contactor C
2three normally open contact C
2-1, C
2-2, C
2-3another three leading-out terminals 18,19,17 successively respectively with the three phase winding B of motor M
2, C
2, A
2three leading-out terminals be connected.Motor M obtains after electric and is rotated further immediately and makes dewaterer keep running well and dehydration.Because motor M is contactor C in Zhi Huilu 1
1on the basis that motor M is rotated, continue and read continuous rotation, so motor M is that held stationary rotates substantially always.Contactor C now
2normally open contact C
2-4in connecting self-sustaining state.Above-mentioned contactor C
2make three phase windings of motor M become A with the method for attachment of three phase windings of motor M
1b
2, B
1c
2and C
1a
2join end to end and connect, three phase windings of motor M just become delta connection from star connection like this.The voltage between phases of motor M is upgraded to 380V, the torque of motor M also improves 1.73 times than star connection, while starting due to dewaterer, reached the rotating speed of normal dehydration, when current motor M is rotated further, velocity variations is little and make motor M always in normal dewatering state.
Zhi Huilu 2 when electric, time relay sj
2coil also electric and start timing.Work as time relay sj
2setting-up time be dewaterer dehydration rotation time then, the time relay sj in Zhi Huilu 2
2normally closed interlock SJ
2-2disconnection makes Zhi Huilu 2 power-off, the contactor C in Zhi Huilu 2
2and time relay sj
2all reset, now contactor C
2normally open contact C
2-1, C
2-2, C
2-3, C
2-4all disconnect contactor C
2four normally closed interlock C
2-5, C
2-6, C
2-7, C
2-8all conductings.Also dead electricity but still rely on inertia to be rotated further of motor M now.Work as time relay sj
2setting-up time then, the time relay sj in Zhi Huilu 3
2normally open contact SJ
2-1it is electric that adhesive obtains Zhi Huilu 3.
Zhi Huilu 3 relay J in the middle of it when electric
1coil obtain the electric auxiliary relay J that makes
1normally open contact J
1-1adhesive.Zhi Huilu 3 obtains the electric contactor C that makes
3coil obtain electric and make contactor C
3three normally open contact C
3-1, C
3-2, C
3-3all adhesives, also make contactor C
3three normally closed interlock C
3-4, C
3-5, C
3-6all disconnect.Normally open contact C after adhesive
3-1, C
3-2, C
3-3leading-out terminal 7,8,9 respectively in order with the three phase winding A of motor M
1, B
1, C
1end of incoming cables connects, because three normally open contact C
3-1, C
3-2, C
3-3end of incoming cables be connected with the leading-out terminal 6,5,4 of circuit breaker K successively respectively, the leading-out terminal 6,5,4 of circuit breaker K is connected with the three-phase end of incoming cables C of AC power 380V, three terminals 3,2,1 of B, A respectively again successively.Three phase windings of motor M just become the star connection of negative-phase sequence like this, and the star connection of this negative-phase sequence makes motor M reversion, the normally open contact J of now adhesive
1-1in self-sustaining state.Zhi Huilu 3 obtains the electric time relay sj that makes
3coil obtain electric and start timing.Time relay sj
3setting-up time very short, just the inertia of dewaterer is rotated and adds a reversion resistance and make motor M stall fast by reversion resistance, motor M does not form real rotating backward.
Time relay sj
3setting-up time then, the time relay sj in Zhi Huilu 3
3normally closed interlock SJ
3-2disconnection makes Zhi Huilu 3 power-off.Zhi Huilu 3 power-off make auxiliary relay J
1, contactor C
3and time relay sj
3all reset.Now motor M stall and stop dewaterer work.
At time contactor SJ
3setting-up time then, the time contactor SJ in Zhi Huilu 4
3normally open contact SJ
3-1it is electric that adhesive obtains Zhi Huilu 4.Zhi Huilu 4 obtains the electric auxiliary relay J that makes
2coil obtains electric and makes auxiliary relay J
2normally open contact J
2-1and J
2-2all adhesives.Normally open contact J
2-2after adhesive in self-sustaining state.Normally open contact J
2-1it is electric that adhesive obtains Zhi Huilu 5, and Zhi Huilu 5 obtains the electric signal lamp D that makes and sends red flash of light, points out the end-of-job that dewaters.Zhi Huilu 5 obtains the electric time relay sj that makes
4electric and start timing.Time relay sj
4setting-up time be signal lamp flash time then, make the time relay sj in Zhi Huilu 4
4normally closed interlock SJ
4-1disconnect.Normally closed interlock SJ
4-1disconnection makes branch road 4 power-off, and Zhi Huilu 4 power-off make auxiliary relay J
2dead electricity resets, and further makes auxiliary relay J
2normally open contact J
2-2and J
2-1all disconnect auxiliary relay J
2reset, also power-off of Zhi Huilu 5, signal lamp lamp goes out.
Advantage of the present invention has been to provide electric control loop and the control method of the motor of dewaterer for a kind of foundry goods smear metal, while using the control method of this control loop can make dewaterer start steadily and shut down, reduces downtime.Dewaterer adopts smaller power to drive dewaterer rotation while starting, dewaterer is slowly accelerated.When dewaterer reaches certain acceleration through the acceleration rotation of a blink, then automatically reply normal power and rotate, while making like this dewaterer start, reach smooth starting.When dewaterer is shut down, on motor, add a reverse voltage, make motor be subject to reverse rotation power and stall rapidly, thereby reduce motor run-down time, reduce reduction of speed process and time.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of motor main circuit of the present invention.
Fig. 2 is the circuit diagram of motor control loop of the present invention.
In accompanying drawing: QA is for often driving button, and TA is normally closed button, and K is circuit breaker, and R1 is fuse, and R2 is fuse, C
1.for contactor, C
.2.for contactor, C
.3for contactor, SJ
1for the time relay, SJ
2for the time relay, SJ
3for the time relay, SJ
4for the time relay, D, be signal element, M is motor.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
An electric control loop for dewaterer motor, is comprised of motor major loop and electric control loop.
(1), the circuit of motor major loop is as follows:
The three-phase end of incoming cables A of AC power 380V, three terminals 1,2,3 of B, C are all connected with circuit breaker K, the leading-out terminal of circuit breaker K 4,5,6 respectively successively with contactor C
1three normally open contact C
1-1, C
1-2, C
1-3, contactor C
2three normally open contact C
2-1, C
2-2, C
2-3with contactor C
3three normally open contact C
3-3, C
3-2, C
3-1be connected.
Described contactor C
1three normally open contact C
1-1, C
1-2and C
1-3three leading-out terminals 7,8,9 respectively successively with three end of incoming cables A of motor M winding
1, B
1, C
1be connected.
Described contactor C
2three normally open contact C
2-1, C
2-2and C
2-3three leading-out terminals 7,8,9 respectively successively with three end of incoming cables A of three windings of motor M
1, B
1, C
1be connected.
Described contactor C
3three normally open contact C
3-1, C
3-2and C
3-3three leading-out terminals 7,8,9 respectively successively with three end of incoming cables A of three windings of motor M
1, B
1, C
1be connected.Described contactor C
2three normally open contact C
2-1, C
2-2and C
2-3three leading-out terminals 7,8,9 respectively successively with contactor C
1three normally closed interlock C
1-5, C
1-6and C
1-7be connected.
Described contactor C
1three normally closed interlock C
1-5, C
1-6and C
1-7three leading-out terminals 14,15,16 respectively successively with contactor C
3three normally closed interlock C
3-4, C
3-5and C
3-6three ends of incoming cables be connected.
Described contactor C
3three normally closed interlock C
3-4, C
3-5and C
3-6three leading-out terminals 18,19,17 respectively successively with contactor C
2three normally closed interlock C
2-6, C
2-7and C
2-5three ends of incoming cables be connected.
Described contactor C
2three normally closed interlock C
2-5, C
2-6and C
2-7three leading-out terminals be all connected with center line N.
Described contactor C
3three normally closed interlock C
3-4, C
3-5and C
3-6three leading-out terminals 18,19,17 respectively successively with three leading-out terminal B of three windings of motor M
2, C
2, A
2be connected.
Described contactor C
2three normally closed interlock C
2-5, C
2-6and C
2-7three ends of incoming cables 17,18,19 respectively successively with three leading-out terminal A of three windings of motor M
2, B
2, C
2be connected.
(2), the circuit of motor electric control loop is as follows:
The single-phase leading-out terminal 4 of circuit breaker K and the fuse R of electric control loop
2be connected.Fuse R
2leading-out terminal 20 be connected with each end of incoming cables of Zhi Huilu 1, Zhi Huilu 2, Zhi Huilu 3, Zhi Huilu 4 and Zhi Huilu 5 respectively.Each leading-out terminal of Zhi Huilu 1, Zhi Huilu 2, Zhi Huilu 3, Zhi Huilu 4 and Zhi Huilu 5 is all connected with center line N.
The circuit diagram of described Zhi Huilu 1 is as follows: the leading-out terminal 21 and contactor C of often opening button QA
2normally closed interlock C
2-8be connected.Normally closed interlock C
2-8leading-out terminal 28 and contactor C
1coil be connected.Contactor C
1normally open contact C
1-4two ends be connected with the two ends of often opening button QA respectively.Time relay sj
1coil two ends respectively with contactor C
1the two ends of coil be connected.
The circuit diagram of described Zhi Huilu 2 is as follows: leading-out terminal 22 and the time relay sj of normally closed button TA
1normally open contact SJ
1-1be connected.Normally open contact SJ
1-1leading-out terminal 23 and time relay sj
2normally closed interlock SJ
2-2be connected.Normally closed interlock SJ
2-2leading-out terminal 29 and contactor C
2coil be connected.Time relay sj
2coil two ends respectively with contactor C
2the two ends of coil be connected.Contactor C
2normally open contact C
2-4two ends respectively with normally open contact SJ
1-1two ends be connected and form self-keeping circuit.
The circuit diagram of described Zhi Huilu 3 is as follows: time relay sj
2normally open contact SJ
2-1leading-out terminal 24 and time relay sj
3normally closed interlock SJ
3-2end of incoming cables be connected.Normally closed interlock SJ
3-2leading-out terminal 30 and auxiliary relay J
1the end of incoming cables of coil be connected.Contactor C
3two ends and the auxiliary relay J of coil
1the two ends of coil be connected.Time relay sj
3coil two ends also with auxiliary relay J
1the two ends of coil be connected.Auxiliary relay J
1normally open contact J
1-1two ends respectively with time relay sj
2normally open contact SJ
2-1two ends be connected and form self-keeping circuit.
The circuit diagram of described Zhi Huilu 4 is as follows: time relay sj
3normally open contact SJ
3-1leading-out terminal 26 and time relay sj
4normally closed interlock SJ
4-1be connected.Normally closed interlock SJ
4-1leading-out terminal 32 and auxiliary relay J
2coil be connected.Auxiliary relay J
2normally open contact J
2-2two ends respectively with time relay sj
3normally open contact SJ
3-1two ends be connected and form self-keeping circuit.
The circuit diagram of described Zhi Huilu 5 is as follows: auxiliary relay J
2normally open contact J
2-1leading-out terminal 27 be connected with signal lamp D.Time relay sj
4the two ends of coil be connected with the two ends of signal lamp D respectively.
A kind of electric control method of dewaterer motor.
During work, the circuit breaker K switch that first closes, switches on power.Press and in Zhi Huilu 1, often open button QA.Contactor C
1coil obtains electric.Contactor C
1four normally open contact C
1-1, C
1-2, C
1-3and C
1-4all adhesives.Contactor C
1three normally closed interlock C
1-5, C
1-6and C
1-7all disconnect.The three phase winding A of motor M
1, B
1, C
1end of incoming cables 7,8,9 by three contact C of adhesive
1-1, C
1-2and C
1-3with power connection.The three phase winding A of motor M
2, B
2, C
3three leading-out terminals 17,18,19 by contactor C
2three normally closed interlock C
2-5, C
2-6and C
2-7all connect with center line N.Motor M obtains electric rotation, normally open contact C
1-4after conducting in self-sustaining state.Because three phase windings of motor M become star connection, so voltage between phases is 220V when motor M starts to rotate, torque is less, only have total head 0.58 times, so rotating speed is slower when motor M drives dewaterer to start from inactive state, rotating speed slowly increases until motor M arrives rated speed level.When dewaterer starts like this, just reached smooth starting.
At contactor C
1coil obtain electric time, time relay sj
1coil also electric and start timing.Work as time relay sj
1the time of setting then, the normally closed interlock C in Zhi Huilu 1
2-8disconnect and make Zhi Huilu 1 power-off, the contactor C after Zhi Huilu 1 power-off in Zhi Huilu 1
1and time relay sj
1all reset.Contactor C
1four normally open contact C
1-1, C
1-2, C
1-3and C
1-4all disconnect contactor C
1three normally closed interlock C
1-5, C
1-6, C
1-7all recover conducting.Now motor M dead electricity stall.
Work as time relay sj
1the time of setting then, the time relay sj in Zhi Huilu 2
1normally open contact SJ
1-1it is electric that adhesive obtains Zhi Huilu 2.Zhi Huilu 2 obtains the electric contactor C that makes
2coil obtain electric.Contactor C
2coil obtain after electric and make contactor C
2four normally open contact C
2-1, C
2-2, C
2-3and C
2-4all adhesives.Contactor C
2coil obtain after electric and make contactor C
2three normally closed interlock C
2-5, C
2-6, C
2-7all disconnect.The leading-out terminal A of motor M now
2, B
2, C
2all disconnect with center line N.Contactor C
2three normally open contact C
2-1, C
2-2, C
2-3after adhesive, make three normally open contact C
2-1, C
2-2, C
2-3three leading-out terminals 7,8,9 successively respectively with the three phase winding A of motor M
1, B
1, C
1end of incoming cables be connected, contactor C
2three normally open contact C
2-1, C
2-2, C
2-3another three leading-out terminals 18,19,17 successively respectively with the three phase winding B of motor M
2, C
2, A
2three leading-out terminals be connected.Motor M obtains after electric and is rotated further immediately and makes dewaterer keep running well and dehydration.Because motor M is contactor C in Zhi Huilu 1
1on the basis that motor M is rotated, continue and read continuous rotation, so motor M is that held stationary rotates substantially always.Contactor C now
2normally open contact C
2-4in connecting self-sustaining state.Above-mentioned contactor C
2make three phase windings of motor M become A with the method for attachment of three phase windings of motor M
1b
2, B
1c
2and C
1a
2join end to end and connect, three phase windings of motor M just become delta connection from star connection like this.The voltage between phases of motor M is upgraded to 380V, the torque of motor M also improves 1.73 times than star connection, while starting due to dewaterer, reached the rotating speed of normal dehydration, when current motor M is rotated further, velocity variations is little and make motor M always in normal dewatering state.
Zhi Huilu 2 when electric, time relay sj
2coil also electric and start timing.Work as time relay sj
2setting-up time be dewaterer dehydration rotation time then, the time relay sj in Zhi Huilu 2
2normally closed interlock SJ
2-2disconnection makes Zhi Huilu 2 power-off, the contactor C in Zhi Huilu 2
2and time relay sj
2all reset, now contactor C
2normally open contact C
2-1, C
2-2, C
2-3, C
2-4all disconnect contactor C
2four normally closed interlock C
2-5, C
2-6, C
2-7, C
2-8all conductings.Also dead electricity but still rely on inertia to be rotated further of motor M now.Work as time relay sj
2setting-up time then, the time relay sj in Zhi Huilu 3
2normally open contact SJ
2-1it is electric that adhesive obtains Zhi Huilu 3.
Zhi Huilu 3 relay J in the middle of it when electric
1coil obtain the electric auxiliary relay J that makes
1normally open contact J
1-1adhesive.Zhi Huilu 3 obtains the electric contactor C that makes
3coil obtain electric and make contactor C
3three normally open contact C
3-1, C
3-2, C
3-3all adhesives, also make contactor C
3three normally closed interlock C
3-4, C
3-5, C
3-6all disconnect.Normally open contact C after adhesive
3-1, C
3-2, C
3-3leading-out terminal 7,8,9 respectively in order with the three phase winding A of motor M
1, B
1, C
1end of incoming cables connects, because three normally open contact C
3-1, C
3-2, C
3-3end of incoming cables be connected with the leading-out terminal 6,5,4 of circuit breaker K successively respectively, the leading-out terminal 6,5,4 of circuit breaker K is connected with the three-phase end of incoming cables C of AC power 380V, three terminals 3,2,1 of B, A respectively again successively.Three phase windings of motor M just become the star connection of negative-phase sequence like this, and the star connection of this negative-phase sequence makes motor M reversion, the normally open contact J of now adhesive
1-1in self-sustaining state.Zhi Huilu 3 obtains the electric time relay sj that makes
3coil obtain electric and start timing.Time relay sj
3setting-up time very short, just the inertia of dewaterer is rotated and adds a reversion resistance and make motor M stall fast by reversion resistance, motor M does not form real rotating backward.
Time relay sj
3setting-up time then, the time relay sj in Zhi Huilu 3
3normally closed interlock SJ
3-2disconnection makes Zhi Huilu 3 power-off.Zhi Huilu 3 power-off make auxiliary relay J
1, contactor C
3and time relay sj
3all reset.Now motor M stall and stop dewaterer work.
At time contactor SJ
3setting-up time then, the time contactor SJ in Zhi Huilu 4
3normally open contact SJ
3-1it is electric that adhesive obtains Zhi Huilu 4.Zhi Huilu 4 obtains the electric auxiliary relay J that makes
2coil obtains electric and makes auxiliary relay J
2normally open contact J
2-1and J
2-2all adhesives.Normally open contact J
2-2after adhesive in self-sustaining state.Normally open contact J
2-1it is electric that adhesive obtains Zhi Huilu 5, and Zhi Huilu 5 obtains the electric signal lamp D that makes and sends red flash of light, points out the end-of-job that dewaters.Zhi Huilu 5 obtains the electric time relay sj that makes
4electric and start timing.Time relay sj
4setting-up time be signal lamp flash time then, make the time relay sj in Zhi Huilu 4
4normally closed interlock SJ
4-1disconnect.Normally closed interlock SJ
4-1disconnection makes branch road 4 power-off, and Zhi Huilu 4 power-off make auxiliary relay J
2dead electricity resets, and further makes auxiliary relay J
2normally open contact J
2-2and J
2-1all disconnect auxiliary relay J
2reset, also power-off of Zhi Huilu 5, signal lamp lamp goes out.
Claims (2)
1. an electric control loop for dewaterer motor, is characterized in that: by motor major loop and electric control loop, formed,
(1), the circuit of motor major loop is as follows:
The three-phase end of incoming cables A of AC power 380V, three terminals 1,2,3 of B, C are all connected with circuit breaker K, the leading-out terminal 4,5,6 of circuit breaker K respectively successively with three normally open contact C1-1, C1-2, the C1-3 of contactor C1, three normally open contact C3-3, C3-2, the C3-1 of three normally open contact C2-1, C2-2, C2-3 and the contactor C3 of contactor C2 are connected;
Three normally open contact C1-1, the C1-2 of described contactor C1 and three leading-out terminals 7,8,9 of C1-3 are connected with three end of incoming cables A1, B1, C1 of motor M winding respectively successively;
Three normally open contact C2-1, the C2-2 of described contactor C2 and three leading-out terminals 7,8,9 of C2-3 are connected with three end of incoming cables A1, B1, C1 of three windings of motor M respectively successively;
Three normally open contact C3-1, the C3-2 of described contactor C3 and three leading-out terminals of C3-3 7,8,9 are connected with three end of incoming cables A1, B1, C1 of three windings of motor M respectively successively, and three normally open contact C2-1, the C2-2 of described contactor C2 and three leading-out terminals 7,8,9 of C2-3 are connected with C1-7 with three normally closed interlock C1-5, the C1-6 of contactor C1 respectively successively;
Three normally closed interlock C1-5, the C1-6 of described contactor C1 and three leading-out terminals 14,15,16 of C1-7 are connected with three normally closed interlock C3-4, the C3-5 of contactor C3 and three ends of incoming cables of C3-6 respectively successively;
Three normally closed interlock C3-4, the C3-5 of described contactor C3 and three leading-out terminals 18,19,17 of C3-6 are connected with three normally closed interlock C2-6, the C2-7 of contactor C2 and three ends of incoming cables of C2-5 respectively successively;
Three normally closed interlock C2-5, the C2-6 of described contactor C2 and three leading-out terminals of C2-7 are all connected with center line N;
Three normally closed interlock C3-4, the C3-5 of described contactor C3 and three leading-out terminals 18,19,17 of C3-6 are connected with three leading-out terminal B2, C2, A2 of three windings of motor M respectively successively;
Three normally closed interlock C2-5, the C2-6 of described contactor C2 and three ends of incoming cables 17,18,19 of C2-7 are connected with three leading-out terminal A2, B2, C2 of three windings of motor M respectively successively;
(2), the circuit of motor electric control loop is as follows:
The single-phase leading-out terminal 4 of circuit breaker K is connected with the fuse R2 of electric control loop, the leading-out terminal 20 of fuse R2 is connected with each end of incoming cables of Zhi Huilu 1, Zhi Huilu 2, Zhi Huilu 3, Zhi Huilu 4 and Zhi Huilu 5 respectively, and each leading-out terminal of Zhi Huilu 1, Zhi Huilu 2, Zhi Huilu 3, Zhi Huilu 4 and Zhi Huilu 5 is all connected with center line N;
The circuit diagram of described Zhi Huilu 1 is as follows: often open the leading-out terminal 21 of button QA and the normally closed interlock C2-8 of contactor C2 is connected, the leading-out terminal 28 of normally closed interlock C2-8 is connected with the coil of contactor C1, the two ends of the normally open contact C1-4 of contactor C1 are connected with the two ends of often opening button QA respectively, and the two ends of the coil of time relay sj 1 are connected with the two ends of the coil of contactor C1 respectively;
The circuit diagram of described Zhi Huilu 2 is as follows: the leading-out terminal 22 of normally closed button TA is connected with the normally open contact SJ1-1 of time relay sj 1, the leading-out terminal 23 of normally open contact SJ1-1 is connected with the normally closed interlock SJ2-2 of time relay sj 2, the leading-out terminal 29 of normally closed interlock SJ2-2 is connected with the coil of contactor C2, the two ends of the coil of time relay sj 2 are connected with the two ends of the coil of contactor C2 respectively, and the two ends of the normally open contact C2-4 of contactor C2 are connected and form self-keeping circuit with the two ends of normally open contact SJ1-1 respectively;
The circuit diagram of described Zhi Huilu 3 is as follows: the leading-out terminal 24 of the normally open contact SJ2-1 of time relay sj 2 is connected with the end of incoming cables of the normally closed interlock SJ3-2 of time relay sj 3, the leading-out terminal 30 of normally closed interlock SJ3-2 is connected with the end of incoming cables of the coil of auxiliary relay J1, the two ends of the coil of contactor C3 are connected with the two ends of the coil of auxiliary relay J1, the two ends of the coil of time relay sj 3 are also connected with the two ends of the coil of auxiliary relay J1, the two ends of the normally open contact J1-1 of auxiliary relay J1 are connected and form self-keeping circuit with the two ends of the normally open contact SJ2-1 of time relay sj 2 respectively,
The circuit diagram of described Zhi Huilu 4 is as follows: the leading-out terminal 26 of the normally open contact SJ3-1 of time relay sj 3 is connected with the normally closed interlock SJ4-1 of time relay sj 4, the leading-out terminal 32 of normally closed interlock SJ4-1 is connected with the coil of auxiliary relay J2, and the two ends of the normally open contact J2-2 of auxiliary relay J2 are connected and form self-keeping circuit with the two ends of the normally open contact SJ3-1 of time relay sj 3 respectively;
The circuit diagram of described Zhi Huilu 5 is as follows: the leading-out terminal 27 of the normally open contact J2-1 of auxiliary relay J2 is connected with signal lamp D, and the two ends of the coil of time relay sj 4 are connected with the two ends of signal lamp D respectively.
2. an electric control method for dewaterer motor, is characterized in that:
During work, the circuit breaker K switch that first closes, switches on power, and presses in Zhi Huilu 1 and often opens button QA, and contactor C1 coil obtains electric, four normally open contact C1-1 of contactor C1, C1-2, the equal adhesive of C1-3 and C1-4, three normally closed interlock C1-5 of contactor C1, C1-6 and C1-7 all disconnect, the three phase winding A1 of motor M, B1, the end of incoming cables 7 of C1, 8, 9 by three contact C1-1 of adhesive, C1-2 and C1-3 and power connection, the three phase winding A2 of motor M, B2, three leading-out terminals 17 of C3, 18, 19 by three normally closed interlock C2-5 of contactor C2, C2-6 and C2-7 all connect with center line N, motor M obtains electric rotation, after normally open contact C1-4 conducting in self-sustaining state, because three phase windings of motor M become star connection, so voltage between phases is 220V when motor M starts to rotate, torque is less, only have total head 0.58 times, so rotating speed is slower when motor M drives dewaterer to start from inactive state, rotating speed slowly increases until motor M arrives rated speed level, has just reached smooth starting when dewaterer starts like this,
The coil of contactor C1 obtain electric in, the coil of time relay sj 1 also electric and start timing, when time that time relay SJ1 sets then, normally closed interlock C2-8 in Zhi Huilu 1 disconnects and makes Zhi Huilu 1 power-off, contactor C1 after Zhi Huilu 1 power-off in Zhi Huilu 1 and time relay sj 1 all reset, four normally open contact C1-1, C1-2, C1-3 and the C1-4 of contactor C1 all disconnect, three normally closed interlock C1-5, the C1-6 of contactor C1, C1-7 all recover conducting, now motor M dead electricity stall;
When time that time relay SJ1 sets then, it is electric that the normally open contact SJ1-1 adhesive of the time relay sj 1 in Zhi Huilu 2 obtains Zhi Huilu 2, Zhi Huilu 2 the electric coil that make contactor C2 obtains electricly, the coil of contactor C2 obtains four normally open contact C2-1 that make contactor C2 after electric, C2-2, all adhesives of C2-3 and C2-4, the coil of contactor C2 obtains three normally closed interlock C2-5 that make contactor C2 after electric, C2-6, C2-7 all disconnects, now the leading-out terminal A2 of motor M, B2, C2 all disconnects with center line N, three normally open contact C2-1 of contactor C2, C2-2, after C2-3 adhesive, make three normally open contact C2-1, C2-2, three leading-out terminals 7 of C2-3, 8, 9 successively respectively with the three phase winding A1 of motor M, B1, the end of incoming cables of C1 is connected, three normally open contact C2-1 of contactor C2, C2-2, another three leading-out terminals 18 of C2-3, 19, 17 successively respectively with the three phase winding B2 of motor M, C2, three leading-out terminals of A2 are connected, motor M obtains after electric and is rotated further immediately and makes dewaterer keep running well and dehydration, because continue and read continuous rotation on the basis that motor M contactor C1 in Zhi Huilu 1 rotates motor M, so motor M is that held stationary rotates substantially always, now the normally open contact C2-4 of contactor C2 is in connecting self-sustaining state, and above-mentioned contactor C2 makes three phase windings of motor M become A1B2 with the method for attachment of three phase windings of motor M, B1C2 and C1A2 join end to end and connect, three phase windings of motor M just become delta connection from star connection like this, the voltage between phases of motor M is upgraded to 380V, the torque of motor M also improves 1.73 times than star connection, while starting due to dewaterer, reached the rotating speed of normal dehydration, when current motor M is rotated further, velocity variations is little and make motor M always in normal dewatering state,
Zhi Huilu 2 when electric, the coil of time relay sj 2 also electric and start timing, when the setting-up time of time relay SJ2 be dewaterer dehydration rotation time then, the normally closed interlock SJ2-2 of the time relay sj 2 in Zhi Huilu 2 disconnects and makes Zhi Huilu 2 power-off, contactor C2 and time relay SJ2 in Zhi Huilu 2 all reset, the normally open contact C2-1 of contactor C2 now, C2-2, C2-3, C2-4 all disconnects, four normally closed interlock C2-5 of contactor C2, C2-6, C2-7, C2-8 is conducting, also dead electricity but still rely on inertia to be rotated further of motor M now, when the setting-up time of time relay SJ2 then, it is electric that the normally open contact SJ2-1 adhesive of the time relay sj 2 in Zhi Huilu 3 obtains Zhi Huilu 3,
Zhi Huilu 3 when electric in the middle of it coil of relay J 1 obtain the electric normally open contact J1-1 adhesive that makes auxiliary relay J1, Zhi Huilu 3 the electric coil that make contactor C3 obtains electric and makes three normally open contact C3-1 of contactor C3, C3-2, the equal adhesive of C3-3, also makes three normally closed interlock C3-4 of contactor C3, C3-5, C3-6 all disconnects, the normally open contact C3-1 after adhesive, C3-2, the leading-out terminal 7 of C3-3, 8, 9 respectively in order with the three phase winding A1 of motor M, B1, C1 end of incoming cables connects, because three normally open contact C3-1, C3-2, the end of incoming cables of C3-3 respectively successively with the leading-out terminal 6 of circuit breaker K, 5, 4 are connected, the leading-out terminal 6 of circuit breaker K, 5, 4 again respectively successively with the three-phase end of incoming cables C of AC power 380V, B, three terminals 3 of A, 2, 1 is connected, three phase windings of motor M just become the star connection of negative-phase sequence like this, the star connection of this negative-phase sequence makes motor M reversion, the normally open contact J1-1 of now adhesive is in self-sustaining state, Zhi Huilu 3 the electric coil that make time relay sj 3 obtains electric and starts timing, the setting-up time of time relay sj 3 is very short, just the inertia rotation of dewaterer is added to a reversion resistance and makes motor M stall fast by reversion resistance, and motor M does not form real rotating backward,
Time relay sj 3 setting-up times then, the normally closed interlock SJ3-2 of the time relay sj 3 in Zhi Huilu 3 disconnects and makes Zhi Huilu 3 power-off, Zhi Huilu 3 power-off all reset auxiliary relay J1, contactor C3 and time relay sj 3, now motor M stall and stop dewaterer work;
At time contactor SJ3 setting-up time then, it is electric that the normally open contact SJ3-1 adhesive of time contactor SJ3 in Zhi Huilu 4 obtains Zhi Huilu 4, Zhi Huilu 4 the electric auxiliary relay J2 coil that make obtains electric and makes normally open contact J2-1 and the equal adhesive of J2-2 of auxiliary relay J2, after normally open contact J2-2 adhesive in self-sustaining state, it is electric that normally open contact J2-1 adhesive obtains Zhi Huilu 5, Zhi Huilu 5 obtains the electric signal lamp D that makes and sends red flash of light, prompting dehydration end-of-job, Zhi Huilu 5 electric make time relay sj 4 electric and start timing, time relay sj 4 setting-up times be signal lamp flash time then, the normally closed interlock SJ4-1 of the time relay sj 4 in Zhi Huilu 4 is disconnected, normally closed interlock SJ4-1 disconnects and makes branch road 4 power-off, Zhi Huilu 4 power-off reset auxiliary relay J2 dead electricity, further make normally open contact J2-2 and the J2-1 of auxiliary relay J2 all disconnect, auxiliary relay J2 resets, also power-off of Zhi Huilu 5, signal lamp lamp goes out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410315896.2A CN104052339B (en) | 2014-07-03 | 2014-07-03 | Electrical control loop and control method of motor of dehydrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410315896.2A CN104052339B (en) | 2014-07-03 | 2014-07-03 | Electrical control loop and control method of motor of dehydrator |
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| Publication Number | Publication Date |
|---|---|
| CN104052339A true CN104052339A (en) | 2014-09-17 |
| CN104052339B CN104052339B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410315896.2A Active CN104052339B (en) | 2014-07-03 | 2014-07-03 | Electrical control loop and control method of motor of dehydrator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817864A (en) * | 2017-11-18 | 2018-03-20 | 襄垣县树元电器有限公司 | The chain automatic start-control device of dewaterer |
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| GB2175468A (en) * | 1985-05-01 | 1986-11-26 | Sports Limited Enterprise | Winch arrangement for water skiers |
| CN2279746Y (en) * | 1995-11-19 | 1998-04-22 | 周元旦 | Voltage dropping starter |
| CN201113857Y (en) * | 2007-08-22 | 2008-09-10 | 南存芳 | Intelligent type self-coupling voltage-reducing starting cabinet |
| CN204089649U (en) * | 2014-07-03 | 2015-01-07 | 溧阳市科华机械制造有限公司 | The electric control loop of dewaterer motor |
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2014
- 2014-07-03 CN CN201410315896.2A patent/CN104052339B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1339500A (en) * | 1971-04-07 | 1973-12-05 | Werkzeugmasch Okt Veb | Electrical circuit arrangement for a drive by means of 3-phase squirrel-cage motors |
| GB2175468A (en) * | 1985-05-01 | 1986-11-26 | Sports Limited Enterprise | Winch arrangement for water skiers |
| CN2279746Y (en) * | 1995-11-19 | 1998-04-22 | 周元旦 | Voltage dropping starter |
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| CN204089649U (en) * | 2014-07-03 | 2015-01-07 | 溧阳市科华机械制造有限公司 | The electric control loop of dewaterer motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817864A (en) * | 2017-11-18 | 2018-03-20 | 襄垣县树元电器有限公司 | The chain automatic start-control device of dewaterer |
| CN107817864B (en) * | 2017-11-18 | 2019-08-27 | 襄垣县树元电器有限公司 | The chain automatic start-control device of dewaterer |
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|---|---|
| CN104052339B (en) | 2017-02-22 |
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