Utility model content
The utility model provides a kind of for being spaced the Energy Saving Control electric cabinet of automatic start-stop motor, the above problem of solution.
To solve the above problems, the technical scheme that the utility model is provided is as follows:
It is a kind of for being spaced the Energy Saving Control electric cabinet of automatic start-stop motor, including cabinet body and cabinet door, the cabinet body and cabinet door
Be hinged, be equipped with mounting plate in the cabinet body, mounting plate be equipped with the disconnecting switch being fixed on guide rail, breaker, contactor,
Three horizontally arranged current transformers, electrothermal relays, and be arranged successively under upper, the right side installation three of the disconnecting switch
Intermediate relay is installed in a horizontally arranged fuse, the lower part of fuse, the lower part of intermediate relay install two times after
Electric appliance, the lower part installation control transformer of the time relay;
Cabinet door surface top is mounted to two transversely arranged signal lamps, is respectively used to indicate control transformation
The power supply indicator that the secondary side of device normally charges and the run indicator for being used to indicate water pump normal pumping, cabinet door surface middle part
Three ammeters are installed, cabinet door surface lower portions install the start stop switch for controlling water pump start and stop.
Preferably, three fuses are respectively first fuse, second fuse and third fuse, two time relays
Device is respectively first time relay and second time relay.
Preferably, the start stop switch is rotary switch;The primary side of the control transformer is exchange 380V, secondary side
To exchange 36V;Three current transformers are from left to right followed successively by A phase current mutual inductor, B phase current mutual inductor, C phase current mutual inductance
Device.
Preferably, the input terminal of the disconnecting switch is electrically connected with alternating current L1, L2, L3, and the output end of disconnecting switch passes through
Breaker is electrically connected with the input terminal of contactor, and the output end threephase cable of contactor is each passed through in three current transformers
Heart hole is electrically connected the major loop for having constituted motor, the shell protective grounding of pump motor with pump motor again;
The secondary terminals S1 of A phase, B phase, C phase current transformer passes through ammeter A1, A2, A3 and the main touching of electrothermal relay respectively
The A phase, B phase, C phase upstream end electrical connection of head, the secondary terminals S2 of A phase, B phase, C phase current transformer use the first control line short
Connect and be grounded, A phase, B phase and the C phase output terminal of electrothermal relay main contact use the second control line be shorted, and the first control line with
The electrical connection of second control line.
Preferably, first fuse, second fuse and breaker are passed through in the both ends for controlling the primary side of transformer respectively
Output terminals A phase L01, C phase L03 electrical connection, control the secondary side of transformer phase line one and third fuse input terminal electricity
Connection, the phase line two for controlling the secondary side of transformer are electrically connected with the normally-closed contact other end of electrothermal relay;
One end of power supply indicator, normally-closed contact one end of intermediate relay, normally opened contact one end of intermediate relay are equal
It being electrically connected with the output end of third fuse, the other end of power supply indicator is electrically connected with normally-closed contact one end of electrothermal relay,
The normally-closed contact other end of intermediate relay successively passes through the normally-closed contact one of start stop switch, the coil of contactor and electrothermal relay
For the coils from parallel connection of coils of end electrical connection and first time relay at the coil both ends of contactor, the normally opened contact of intermediate relay is another
End is electrically connected by the coil of second time relay with normally-closed contact one end of electrothermal relay, the delay of first time relay
Contact shunt is closed in the normally opened contact both ends of intermediate relay, the delay break contact of second time relay and intermediate relay
The coil both ends of second time relay are connected in parallel on after the coil series connection of device;Normally opened contact one end of contactor and third fuse
Output end electrical connection, the phase line of the normally opened contact other end of contactor by run indicator and the secondary side for controlling transformer
Two electrical connections.
Beneficial effect compared with the existing technology is that using the above scheme, the utility model is connect by closing start stop switch
The coil of tentaculum first it is electric, and then contactor obtain it is electric, pump motor because it is electric due to feed-tank realizes upper water operation, and first
The coil of the time relay obtain exchange 36V voltage and start timing, when water pump runing time then, first time relay
The timing closing contact of device is connected, and the coil of intermediate relay obtains electric, the then normally-closed contact movement disconnection of intermediate relay, simultaneously
The coil of the coil and first time relay that cut off contactor controls power supply, and the coil blackout release of contactor makes its master
Contact simultaneously switches off, and pump motor is stalled because being detached from 380V power supply;The power-off of first time relay is discharged and is resetted, intermediate
The normally opened contact of relay, which acts, to be connected, intermittent time timing of the coil of second time relay due to must be electric to water pump, when
Then, the delay break contact of second time relay disconnects the timing time of second time relay, the line of intermediate relay
Circle is resetted because of power-off, i.e., the normally-closed contact of intermediate relay is connected, and it is same that the coil of contactor obtains electric and three of them main contact
When be closed, pump motor because it is electric due to start automatically, the continuous intercycle automatic loading water of process and cut off the water according to this, energy-saving
Electricity avoids waste water resource;The secondary side voltage for controlling transformer is safety low-voltage 36V, can not only be hurted sb.'s feelings to avoid accidentally electricity
Work, but also the coil motion sound of contactor is reduced accordingly, noise is reduced, the degree of aging of contactor is slowed down;It is adapted to
The motor control of a variety of interval operations.
Specific embodiment
For the ease of understanding the utility model, in the following with reference to the drawings and specific embodiments, the utility model is carried out more detailed
Thin explanation.The preferred embodiment of the utility model is given in attached drawing.But the utility model can be with many different
Form is realized, however it is not limited to this specification described embodiment.On the contrary, purpose of providing these embodiments is makes to this
The understanding of the disclosure of utility model is more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term used in this specification " fixation ", " integrated molding ",
For illustrative purposes only, the similar unit of structure is to identical label in the figure for "left", "right" and similar statement
Mark.
Unless otherwise defined, technical and scientific term all used in this specification and the skill for belonging to the utility model
The normally understood meaning of the technical staff in art field is identical.Art used in the description of the utility model in this specification
Language, which is only for the purpose of describing specific embodiments, is not intended to limitation the utility model.
As shown in Figure 1, one embodiment of the utility model is:
It is a kind of for being spaced the Energy Saving Control electric cabinet of automatic start-stop motor, including cabinet body 20 and cabinet door 21, the cabinet body 20
It is hinged with cabinet door 21, mounting plate is equipped in the cabinet body 20, mounting plate is equipped with the disconnecting switch 22 being fixed on guide rail, breaks
Road device 23, contactor 24, three horizontally arranged current transformers 25, electrothermal relay 26, and be arranged successively under upper, it is described
Three horizontally arranged fuses 27 are installed on the right side of disconnecting switch 22, and intermediate relay 28 is installed in the lower part of fuse 27, in
Between relay 28 lower part install two time relays 29, the time relay 29 lower part installation control transformer 30;
The 21 surface top of cabinet door is mounted to two transversely arranged signal lamps 31, is respectively used to indicate control
The power supply indicator that the secondary side of transformer 30 normally charges and the run indicator for being used to indicate water pump normal pumping, cabinet door 21
Surface middle part installs three ammeters 32, and 21 surface lower portions of cabinet door install the start stop switch 33 for controlling water pump start and stop.
Preferably, three fuses are respectively first fuse, second fuse and third fuse, two time relays
Device is respectively first time relay and second time relay.
Preferably, the start stop switch is rotary switch;The primary side of the control transformer is exchange 380V, secondary
Side is exchange 36V;Three current transformers are from left to right followed successively by A phase current mutual inductor TA1, B phase current mutual inductor TA2, C phase
Current transformer TA3.
Preferably, as shown in Fig. 2, the input terminal of the disconnecting switch QS is electrically connected with alternating current L1, L2, L3, disconnecting switch
The output end of QS is electrically connected by circuit breaker Q F with the input terminal of contactor KM, and the output end threephase cable of contactor KM is worn respectively
The centre bore for crossing three current transformers is electrically connected the major loop for having constituted motor with pump motor again, pump motor
Shell protective grounding;
The secondary terminals S1 of A phase, B phase, C phase current transformer passes through ammeter A1, A2, A3 and electrothermal relay FR master respectively
The A phase, B phase, C phase upstream end of contact is electrically connected, and the secondary terminals S2 of A phase, B phase, C phase current transformer uses the first control line
It is shorted and is grounded, A phase, B phase and the C phase output terminal of electrothermal relay FR main contact use the second control line to be shorted, and the first control
Line is electrically connected with the second control line.
Preferably, as shown in figure 3, first fuse FU1, second are passed through in the both ends of the primary side of control transformer TC respectively
Fuse FU2 is electrically connected with output terminals A phase L01, the C phase L03 of circuit breaker Q F, control transformer TC secondary side phase line one with
The input terminal of third fuse FU3 is electrically connected, and controls the phase line two of the secondary side of transformer TC and the normally closed touching of electrothermal relay FR
Point other end electrical connection;
One end of power supply indicator HL1, normally-closed contact one end of intermediate relay KA, intermediate relay KA normally opened contact
One end is electrically connected with the output end of third fuse FU3, the normally closed touching of the other end and electrothermal relay FR of power supply indicator HL1
Point one end electrical connection, the normally-closed contact other end of intermediate relay KA successively pass through start stop switch SA, contactor KM coil with
Normally-closed contact one end of electrothermal relay FR be electrically connected and the coils from parallel connection of coils of first time relay KT1 contactor KM coil two
End, the normally opened contact other end of intermediate relay KA by the second time relay KT2 coil and electrothermal relay FR it is normally closed
The electrical connection of contact one end, the normally opened contact two of the timing closing contact shunt of first time relay KT1 in intermediate relay KA
End, the delay break contact of the second time relay KT2 be connected in parallel on after connecting with the coil of intermediate relay KA the second time after
The coil both ends of electric appliance KT2;Normally opened contact one end of contactor KM is electrically connected with the output end of third fuse FU3, contactor
The normally opened contact other end of KM is electrically connected by run indicator HL2 with the phase line two for the secondary side for controlling transformer TC.
Working principle:
Circuit transmission process:Disconnecting switch is first closed, breaker is being closed, the first, second fuse is being closed, is then controlling
The primary side of transformer has electricity;Closing third fuse, power supply indicator obtains electric bright, indicates that the secondary side of control transformer has
The voltage of 36V, to provide control power supply for pump motor control loop.
Starting water pump for the first time:Start stop switch is closed, the coil of contactor and the coil of first time relay obtain simultaneously
Electricity, the normally opened contact closure of contactor, three main contacts of contactor are closed at, and run indicator obtains electric bright, and water pump is electronic
The winding of machine starts operating because obtaining three-phase 380V AC power, and driving water pump feed-tank supplies water;First time relay
Coil acts due to must be electric and starts timing(The runing time of water pump);
Temporally pump trip:The timing time of first time relay then, the timing closing of first time relay
Contact closure is connected, and the coil of intermediate relay acts due to must be electric, is disconnected the normally-closed contact of intermediate relay, is cut off simultaneously
The coil of first time relay and the coil power of contactor, the coil of contactor make three main touchings of contactor because of disconnection
Head simultaneously switches off, and pump motor is stalled because being detached from three-phase 380V power supply;The disconnection of first time relay is discharged and is resetted,
The normally opened contact of intermediate relay is closed, and the coil of second time relay obtains electric and starts timing(The intermittent time of water pump);
Temporally start water pump automatically:The timing time of second time relay then, the delay of second time relay
Break contact disconnects, and the coil of intermediate relay is resetted because of power-off, and the normally-closed contact of intermediate relay resets closure and connects, this
When first time relay and contactor coil simultaneously it is electric, three main contacts of contactor are closed at, contactor it is normal
Contact closure is opened, run indicator is electric bright because obtaining, and pump motor operates due to must be electric and feed pump automatic loading water, same in this
When, first time relay carries out timing again(The runing time of water pump),
The continuous intercycle feed-tank of process supplies water according to this;
Water pump stops pumping:Start stop switch is disconnected manually, cuts off the coil power of contactor, contactor is discharged because powering off,
Three main contacts of contactor simultaneously switch off, and pump motor stalls due to exchanging 380V power supply because being detached from;
Pump motor overload is shut down:
When pump motor overload, when load current meets or exceeds the setting valve of electrothermal relay, current transformer two
Electrothermal relay movement in minor loop, normally-closed contact disconnect, and cut off the control loop of contactor coil, and contactor disconnection is released
It puts, three main contacts of contactor simultaneously switch off, and pump motor stops operating because being detached from 380v AC power source.
Beneficial effect compared with the existing technology is that using the above scheme, the utility model is connect by closing start stop switch
The coil of tentaculum first it is electric, and then contactor obtain it is electric, pump motor because it is electric due to feed-tank realizes upper water operation, and first
The coil of the time relay obtain exchange 36V voltage and start timing, when water pump runing time then, first time relay
The timing closing contact of device is connected, and the coil of intermediate relay obtains electric, the then normally-closed contact movement disconnection of intermediate relay, simultaneously
The coil of the coil and first time relay that cut off contactor controls power supply, and the coil blackout release of contactor makes its master
Contact simultaneously switches off, and pump motor is stalled because being detached from 380V power supply;The power-off of first time relay is discharged and is resetted, intermediate
The normally opened contact of relay, which acts, to be connected, intermittent time timing of the coil of second time relay due to must be electric to water pump, when
Then, the delay break contact of second time relay disconnects the timing time of second time relay, the line of intermediate relay
Circle is resetted because of power-off, i.e., the normally-closed contact of intermediate relay is connected, and it is same that the coil of contactor obtains electric and three of them main contact
When be closed, pump motor because it is electric due to start automatically, the continuous intercycle automatic loading water of process and cut off the water according to this, energy-saving
Electricity avoids waste water resource;The secondary side voltage for controlling transformer is safety low-voltage 36V, can not only be hurted sb.'s feelings to avoid accidentally electricity
Work, but also the coil motion sound of contactor is reduced accordingly, noise is reduced, slows down the degree of aging of contactor, is adapted to
The motor control of a variety of interval operations.
It should be noted that above-mentioned each technical characteristic continues to be combined with each other, the various embodiments not being enumerated above are formed,
It is accordingly to be regarded as the range of the utility model specification record;Also, it for those of ordinary skills, can be according to above stating
It is bright to be improved or converted, and all these modifications and variations all should belong to the protection model of the appended claims for the utility model
It encloses.