CN108173242B - Motor-pumped well control cabinet and control method - Google Patents
Motor-pumped well control cabinet and control method Download PDFInfo
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- CN108173242B CN108173242B CN201711374596.1A CN201711374596A CN108173242B CN 108173242 B CN108173242 B CN 108173242B CN 201711374596 A CN201711374596 A CN 201711374596A CN 108173242 B CN108173242 B CN 108173242B
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- pumped well
- normal open
- contactor
- open switch
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000005611 electricity Effects 0.000 claims abstract description 69
- 230000001012 protector Effects 0.000 claims description 17
- 239000004020 conductor Substances 0.000 claims description 9
- 230000007935 neutral effect Effects 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 235000020681 well water Nutrition 0.000 description 2
- 239000002349 well water Substances 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/09—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against over-voltage; against reduction of voltage; against phase interruption
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/083—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for three-phase systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
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- Motor And Converter Starters (AREA)
Abstract
The present invention provides a kind of motor-pumped well control cabinet and control methods, comprising: A.C. contactor is released the button, the time relay, electric current relay；In major loop, A/B/C phase electricity is separately connected the A/B/C phase electrical input of motor-pumped well motor by the first/bis-/tri- normal open switch of the A.C. contactor respectively；The coil of the electric current relay is connected in series between the normal open switch of the A.C. contactor and the three-phase electrical input of the motor-pumped well motor；In secondary circuit, the 4th normal open switch of the A.C. contactor is connected in parallel with releasing the button, one end connection C phase electricity of the 4th normal open switch of the A.C. contactor, the other end the first node of connection；The first branch and second branch are connected in parallel between first node and the second node；The second Node connectedness B phase electricity.Motor-pumped well control cabinet provided by the invention and control method can be automatically cut off the power when motor-pumped well control cabinet idle running, avoid idling consumption, save electric energy.
Description
Technical field
The invention belongs to electic protection and control technology fields, are to be related to a kind of motor-pumped well control cabinet and control more specifically
Method processed.
Background technique
Agriculture row's motor-pumped well is multi-point and wide-ranging, and motor-pumped well water pump motor works or so 10 hours daily, when pump motor is stopped transport, motor-pumped well
Many elements such as ac contactor coil, the current transformer of control cabinet keep whole day energized state, and motor-pumped well water pump motor is stopped transport
In the case of, consume in standby mode one day of a motor-pumped well motor control box reaches 1.5kWh, therefore, the zero load of motor-pumped well motor control box
Operation causes huge waste of energy.
Summary of the invention
The purpose of the present invention is to provide a kind of motor-pumped well control cabinet and control methods, it is intended to solve motor-pumped well motor control box
Idle running causes the problem of huge waste of energy.
To achieve the above object, the embodiment of the present invention provides a kind of motor-pumped well control cabinet, comprising: A.C. contactor, unlatching are pressed
Button, the time relay, electric current relay；
In major loop, first normal open switch one end of the A.C. contactor is used to connect the A phase electricity in three phase mains, separately
One end is used to connect the A phase electrical input of motor-pumped well motor；Second normal open switch one end of the A.C. contactor is for connecting three
B phase electricity in phase power supply, the other end are used to connect the B phase electrical input of motor-pumped well motor；The third of the A.C. contactor is normally opened
Switch one end is used to connect the C phase electricity in three phase mains, and the other end is used to connect the C phase electrical input of motor-pumped well motor；
The A phase electricity that the coil of the electric current relay is connected in series in first normal open switch and the motor-pumped well motor is defeated
Enter end between or second normal open switch and the B phase electrical input of the motor-pumped well motor between or the third it is normally opened
Between switch and the C phase electrical input of the motor-pumped well motor；
In secondary circuit, the 4th normal open switch of the A.C. contactor is connected in parallel with releasing the button, and the exchange connects
One end connection C phase electricity of 4th normal open switch of tentaculum, the other end connect the first node；The first branch is in parallel with second branch to be connected
It is connected between first node and the second node；The second Node connectedness B phase electricity；
The first branch includes time relay coil and electric current relay normally closed switch, the time relay coil
It is connected in series with the electric current relay normally closed switch；
The second branch include the ac contactor coil, the time relay normally closed switch and the electric current after
Electric appliance normal open switch, the ac contactor coil and the time relay normally closed switch are connected in series, the time relay
Device normally closed switch is connected in parallel with the electric current relay normal open switch.
Further, the motor-pumped well control cabinet, further includes: electric energy meter；The electric energy meter is connected in series in
Between the B phase electricity and second node, for measuring and showing the electricity consumption of motor-pumped well motor.
Further, the motor-pumped well control cabinet further include: phase failure protector；The first coil string of the phase failure protector
Connection is connected between the first normal open switch of the A.C. contactor and the A phase electrical input of the motor-pumped well motor, the disconnected phase
The B phase electricity that second coil of protector is connected in series in the second normal open switch and the motor-pumped well motor of the A.C. contactor is defeated
Enter between end, the tertiary coil of the phase failure protector be connected in series in the third normal open switch of the A.C. contactor with it is described
Between the C phase electrical input of motor-pumped well motor；The normally closed switch of the phase failure protector is connected in series in second node and institute
It states between B phase electricity.
Further, the motor-pumped well control cabinet further include: multiple indicator lights；First indicator light one end is used for and the electricity
The A phase electrical input of machine connects, and the other end is connect with the neutral conductor；Second indicator light one end is used for defeated with the B phase electricity of the motor
Enter end connection, the other end is connect with the neutral conductor；Third indicator light one end with the C phase electrical input of the motor for connecting, separately
One end is connect with the neutral conductor.
Further, the motor-pumped well control cabinet further include: breaker；First normal open switch of breaker is connected in series
Between the first normal open switch of the A.C. contactor and the A phase electrical input of the motor-pumped well motor；The breaker second
Normal open switch be connected in series in the second normal open switch of the A.C. contactor and the motor-pumped well motor B phase electrical input it
Between；The breaker third normal open switch is connected in series in the third normal open switch and the motor-pumped well motor of the A.C. contactor
C phase electrical input between.
Further, the motor-pumped well control cabinet further include: fuse；The fuse is connected in series in the C phase electricity
Between described release the button, for releasing the button and the C phase described in the disconnection when secondary loop current is greater than preset threshold
The connection of electricity.
Further, described to release the button as wink ejector half button.
Further, the A.C. contactor is 380V A.C. contactor.
The embodiment of the present invention also provides a kind of motor-pumped well control method based on the motor-pumped well control cabinet, comprising the following steps:
It is described release the button be pressed after, the motor-pumped well control cabinet is started to work, the coil electrification of the A.C. contactor,
4th normal open switch of the A.C. contactor is closed, and realizes that the A.C. contactor is self-locking, while the A.C. contactor
First normal open switch, the second normal open switch, third normal open switch closure, the coil of the time relay are powered；
The coil of the time relay, which is powered, starts timing, if reaching motor-pumped well before the setting time of the time relay
Motor start switch is turned on, major loop conducting, and the coil electrification of the electric current relay, the normally opened of the electric current relay opens
It closes and closes, secondary circuit stablizes conducting, and the motor-pumped well motor works normally；
If the motor-pumped well motor start switch is not activated before reaching the setting time of the time relay, major loop without
The coil of electric current, the electric current relay is not charged, and normal open switch and the normally closed switch of the electric current relay are failure to actuate, described
The disconnection when reaching the time relay setting time of time relay normally closed switch, secondary circuit disconnect, the motor-pumped well control
Case processed stops working；
After the motor-pumped well motor start switch is closed, major loop no current, the coil losing electricity of the electric current relay, institute
State the normal open switch disconnection of electric current relay, the normally closed switch closure of the electric current relay, the coil of the time relay
Electrification starts timing, and when reaching setting time, the time relay normally closed switch is disconnected, the deactivation coil of the A.C. contactor
Electricity, the first normal open switch of the A.C. contactor, the second normal open switch, third normal open switch in major loop disconnect, cutting master
Ring current.
Further, the setting time of the electric current relay is 5 minutes.
The beneficial effect of motor-pumped well control cabinet provided in an embodiment of the present invention is: compared with prior art, the present invention is implemented
A kind of motor-pumped well control cabinet and control method that example provides, including A.C. contactor, release the button, the time relay, electric current relay
Device；In major loop, first normal open switch one end of the A.C. contactor is used to connect the A phase electricity in three phase mains, the other end
For connecting the A phase electrical input of motor-pumped well motor；Second normal open switch one end of the A.C. contactor is for connecting three-phase electricity
B phase electricity in source, the other end are used to connect the B phase electrical input of motor-pumped well motor；The third normal open switch of the A.C. contactor
One end is used to connect the C phase electricity in three phase mains, and the other end is used to connect the C phase electrical input of motor-pumped well motor；The electric current after
The coil of electric appliance is connected in series between first normal open switch and the A phase electrical input of the motor-pumped well motor or described
Between second normal open switch and the B phase electrical input of the motor-pumped well motor or the third normal open switch and motor-pumped well electricity
Between the C phase electrical input of machine；In secondary circuit, the 4th normal open switch of the A.C. contactor is in parallel with releasing the button even
It connects, one end connection C phase electricity of the 4th normal open switch of the A.C. contactor, the other end connects the first node；The first branch with
Second branch is connected in parallel between first node and the second node；The second Node connectedness B phase electricity；Described first
Road includes time relay coil and electric current relay normally closed switch, and the time relay coil and the electric current relay are normal
Make and break, which is closed, to be connected in series；The second branch includes the ac contactor coil, the time relay normally closed switch and institute
Electric current relay normal open switch is stated, the ac contactor coil and the time relay normally closed switch are connected in series, described
Time relay normally closed switch is connected in parallel with the electric current relay normal open switch.Motor-pumped well control cabinet provided by the invention and control
Method processed is automatically cut off the power when motor-pumped well control cabinet idle running, avoids idling consumption, saves electric energy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of motor-pumped well control cabinet provided in an embodiment of the present invention.
Appended drawing reference: A phase electricity A, B phase electricity B, C phase electricity C, the coil KM of A.C. contactor, the first normal open switch KM1, first
Normal open switch KM2, the first normal open switch KM3, the first normal open switch KM4, the coil KA of electric current relay, electric current relay it is normal
KA1, the normal open switch KA2 of electric current relay, the coil KT of the time relay, the normally closed switch KT1 of the time relay are closed in make and break,
Motor-pumped well motor M.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
Specific embodiment:
As shown in Figure 1, a kind of motor-pumped well control cabinet, comprising: A.C. contactor is released the button, the time relay, electric current relay
Device；
In major loop, first one end normal open switch KM1 of the A.C. contactor is used to connect the A phase in three phase mains
Electricity, the other end are used to connect the A phase electrical input of motor-pumped well motor M；It uses second one end normal open switch KM2 of the A.C. contactor
B phase electricity in connection three phase mains, the other end are used to connect the B phase electrical input of motor-pumped well motor M；The A.C. contactor
Third one end normal open switch KM3 is used to connect the C phase electricity in three phase mains, and the C phase electricity that the other end is used to connect motor-pumped well motor M is defeated
Enter end；
The coil of the electric current relay is connected in series in the A phase of the first normal open switch KM1 with the motor-pumped well motor M
It is between electrical input or between the B phase electrical input of the second normal open switch KM2 and motor-pumped well motor M or described
Between the C phase electrical input of the third normal open switch KM3 and motor-pumped well motor M；
In secondary circuit, the 4th normal open switch KM4 and SB that releases the button of the A.C. contactor is connected in parallel, the friendship
One end connection C phase electricity of the 4th normal open switch KM4 of contactor is flowed, the other end connects the first node；The first branch with second
Road is connected in parallel between first node and the second node；The second Node connectedness B phase electricity；The SB use of releasing the button
In the starting motor-pumped well control cabinet.
The first branch includes time relay coil KT and electric current relay normally closed switch KA1, the time relay
The device coil KT and electric current relay normally closed switch KA1 is connected in series；
The second branch include the ac contactor coil KM, the time relay normally closed switch KT1 with it is described
Electric current relay normal open switch KA2, the ac contactor coil KM connect company with the time relay normally closed switch KT1
It connects, the time relay normally closed switch KT1 is connected in parallel with the electric current relay normal open switch KA2.
The course of work of the motor-pumped well control cabinet provided in an embodiment of the present invention are as follows: after the SB that releases the button is pressed,
The motor-pumped well control cabinet is started to work, and the coil KM electrification of the A.C. contactor, the 4th of the A.C. contactor is normally opened to open
KM4 closure is closed, realizes that the A.C. contactor is self-locking, while is the first normal open switch KM1 of the A.C. contactor, second normally opened
The coil KT of switch KM2, third normal open switch KM3 closure, the time relay is powered；
The coil KT of the time relay, which is powered, starts timing, if reaching machine before the setting time of the time relay
Hole motor M, which is started switch, to be turned on, the coil KT electrification of the electric current relay, the normal open switch KA2 of the electric current relay
Closure, secondary circuit stablize conducting, and motor-pumped well motor M is worked normally；
It is not activated if reaching motor-pumped well motor M before the setting time of the time relay and starting switch, major loop is without electricity
Stream, the coil KA of the electric current relay is not charged, and the normal open switch KA2 and normally closed switch KA1 of the electric current relay are motionless
Make, time relay normally closed switch KT1 disconnection when reaching the time relay setting time, the A.C. contactor
Coil KM power loss, the 4th normal open switch KM4 of the A.C. contactor in secondary circuit disconnects, and secondary circuit disconnects, described
Motor-pumped well control cabinet stops working, thus avoid the motor-pumped well control cabinet the motor-pumped well motor not the operating time phase be in it is standby
State causes waste of energy.
Motor-pumped well motor M is started switch be closed after, major loop no current, the coil KA power loss of the electric current relay, institute
State the normal open switch KA2 disconnection of electric current relay, the normally closed switch KA1 closure of the electric current relay, the time relay
Coil KT electrification start timing, when reaching setting time, the time relay normally closed switch KT1 is disconnected, and makes the exchange
The coil KM power loss of contactor, the first normal open switch of A.C. contactor KM1, the second normal open switch KM2, in major loop
Three normal open switch disconnect KM3, cut off main circuit power.After the motor-pumped well motor M is closed, pass through prolonging for the time relay
Shi Zuoyong, the first normal open switch KM1, the second normal open switch KM2, third normal open switch of A.C. contactor described in major loop
KM3 delay disconnects, and avoids damage of the high current to A.C. contactor when cutting off the power in major loop, extends the exchange and connects
The service life of the electrical components such as tentaculum, the electric current relay, while in turn avoiding the exchange in the motor-pumped well control cabinet
Electric energy loss caused by contactor, the electric current relay, the time relay are long charged.
The beneficial effect of motor-pumped well control cabinet provided in an embodiment of the present invention is: compared with prior art, the present invention is implemented
A kind of motor-pumped well control cabinet and control method, A.C. contactor that example provides are released the button, the time relay, electric current relay；It is main
In circuit, first one end normal open switch KM1 of the A.C. contactor is used to connect the A phase electricity in three phase mains, and the other end is used
In the A phase electrical input of connection motor-pumped well motor M；Second one end normal open switch KM2 of the A.C. contactor is for connecting three-phase
B phase electricity in power supply, the other end are used to connect the B phase electrical input of motor-pumped well motor M；The third of the A.C. contactor is normally opened to be opened
It closes the one end KM3 and is used to connect the C phase electrical input of motor-pumped well motor M for connecting the C phase electricity in three phase mains, the other end；It is described
The coil of electric current relay be connected in series in the first normal open switch KM1 and motor-pumped well motor M A phase electrical input it
Between or the B phase electrical input of the second normal open switch KM2 and motor-pumped well motor M between or the third is normally opened opens
Between the C phase electrical input for closing the KM3 and motor-pumped well motor M；In secondary circuit, the 4th normal open switch of the A.C. contactor
KM4 is connected in parallel with the SB that releases the button, one end connection C phase electricity of the 4th normal open switch KM4 of the A.C. contactor, the other end
Connect the first node；The first branch and second branch are connected in parallel between first node and the second node；Described second
Node connectedness B phase electricity；The first branch includes time relay coil KT and electric current relay normally closed switch KA1, when described
Between relay coil KT and the electric current relay normally closed switch KA1 be connected in series；The second branch includes that the exchange connects
Tentaculum coil KM, the time relay normally closed switch KT1 and the electric current relay normal open switch KA2, the ac contactor
The device coil KM and time relay normally closed switch KT1 is connected in series, the time relay normally closed switch KT1 and the electricity
Current relay normal open switch KA2 is connected in parallel.Motor-pumped well control cabinet provided by the invention and control method, when motor-pumped well control cabinet is unloaded
It is automatically cut off the power when operation, avoids idling consumption, save electric energy.
Further, the motor-pumped well control cabinet, further includes: electric energy meter；The electric energy meter is connected in series in
Between the B phase electricity and second node, for measuring and showing the electricity consumption of motor-pumped well motor M, convenient for according to user power utilization
Measure carry out expense calculating.
Further, the motor-pumped well control cabinet further include: phase failure protector；The first coil string of the phase failure protector
Connection is connected between the A phase electrical input of the first normal open switch KM1 and the motor-pumped well motor M of the A.C. contactor, described
Second coil of phase failure protector is connected in series in the second normal open switch KM2 and the motor-pumped well motor M of the A.C. contactor
B phase electrical input between, the third that the tertiary coil of the phase failure protector is connected in series in the A.C. contactor is normally opened
Between the C phase electrical input of the switch KM3 and motor-pumped well motor M；The normally closed switch of the phase failure protector is connected in series in institute
It states between the second node and the B phase electricity；The phase failure protector is used for when the phase failure protector Coil Detector to three-phase electricity
When any phase or multiphase electricity decompression in source, the normally closed switch of the phase failure protector is disconnected, the ac contactor coil KM loses
Electricity, the first normal open switch KM1, the second normal open switch KM2, the third normal open switch KM3 of the A.C. contactor are disconnected, cutting master
Circuit, to achieve the purpose that the protection motor-pumped well motor M.
Further, the motor-pumped well control cabinet further include: multiple indicator lights；First indicator light one end is used for and the electricity
The A phase electrical input of machine M connects, and the other end is connect with the neutral conductor；Second indicator light one end is used for the B phase electricity with the motor M
Input terminal connection, the other end are connect with the neutral conductor；Third indicator light one end is used to connect with the C phase electrical input of the motor M,
The other end is connect with the neutral conductor；The three of the motor-pumped well motor M are conveniently checked according to the light on and off of indicator light by setting indicator light
Whether the power supply of phase power input is normal.
Further, the motor-pumped well control cabinet further include: breaker；First normal open switch of breaker is connected in series
Between the A phase electrical input of the first normal open switch KM1 and the motor-pumped well motor M of the A.C. contactor；The breaker
The B phase electricity that second normal open switch is connected in series in the second normal open switch KM2 and the motor-pumped well motor M of the A.C. contactor is defeated
Enter between end；The breaker third normal open switch is connected in series in third normal open switch KM3 and the institute of the A.C. contactor
It states between the C phase electrical input of motor-pumped well motor M；The breaker is for power supply in hand off major loop, as by secondary
Circuit automatically controls the supplement of the mode of the A.C. contactor cutting main circuit power；Hand off is provided and is cut automatically simultaneously
Disconnected two ways, it can be ensured that cut off the power preferably protect the motor-pumped well motor M in time.
Further, the motor-pumped well control cabinet further include: fuse；The fuse is connected in series in the C phase electricity
Between the SB that releases the button, for when secondary loop current be greater than preset threshold when disconnect described in release the button SB with it is described
The connection of C phase electricity, is protected in control cabinet described in the A.C. contactor, the time relay, described electric current relay etc.
Each electrical component is burnt because electric current is excessive.
Further, the SB that releases the button is wink ejector half button, and long service life is swift in response.
Further, the A.C. contactor is 380V A.C. contactor, relative to 220V A.C. contactor pressure resistance range
Greatly, it is hardly damaged.
The embodiment of the present invention also provides a kind of motor-pumped well control method based on the motor-pumped well control cabinet, comprising the following steps:
After the SB that releases the button is pressed, motor-pumped well control cabinet is started to work, the coil KM electrification of the A.C. contactor,
4th normal open switch KM4 of the A.C. contactor is closed, and realizes that the A.C. contactor is self-locking, and the first of A.C. contactor is often
Switch KM1, the second normal open switch KM2, third normal open switch KM3 closure, the coil KT of the time relay are powered；
The coil KT of the time relay, which is powered, starts timing, if reaching machine before the setting time of the time relay
Hole motor M, which is started switch, to be turned on, the coil KT electrification of the electric current relay, the normal open switch closure of the electric current relay
KA2, secondary circuit stablize conducting, and motor-pumped well motor M is worked normally；
It is not activated if reaching motor-pumped well motor M before the setting time of the time relay and starting switch, major loop is without electricity
Stream, the coil KA of the electric current relay is not charged, and the normal open switch KA2 and normally closed switch KA1 of the electric current relay are motionless
Make, time relay normally closed switch KT1 disconnection when reaching the time relay setting time, the A.C. contactor
Coil KM power loss, the 4th normal open switch KM4 of the A.C. contactor in secondary circuit disconnects, and secondary circuit disconnects, motor-pumped well
Control cabinet stops working；
Motor-pumped well motor M is started switch be closed after, major loop no current, the coil KA power loss of the electric current relay, institute
State the normal open switch KA2 disconnection of electric current relay, the normally closed switch KA1 closure of the electric current relay, the time relay
Coil KT electrification start timing, when reaching setting time, the time relay normally closed switch KT1 is disconnected, and makes the exchange
The coil KM power loss of contactor, the first normal open switch of A.C. contactor KM1, the second normal open switch KM2, in major loop
Three normal open switch disconnect KM3, cut off main circuit power.
Further, the setting time of the electric current relay is 5 minutes.
Motor-pumped well control method provided by the invention automaticallys cut off the power when motor-pumped well control cabinet idle running, avoids standby
Electric energy is saved in loss.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of motor-pumped well control cabinet characterized by comprising A.C. contactor is released the button, the time relay, electric current relay
Device；
In major loop, first normal open switch one end of the A.C. contactor is used to connect the A phase electricity in three phase mains, the other end
For connecting the A phase electrical input of motor-pumped well motor；Second normal open switch one end of the A.C. contactor is for connecting three-phase electricity
B phase electricity in source, the other end are used to connect the B phase electrical input of motor-pumped well motor；The third normal open switch of the A.C. contactor
One end is used to connect the C phase electricity in three phase mains, and the other end is used to connect the C phase electrical input of motor-pumped well motor；
The coil of the electric current relay is connected in series in A phase electrical input of first normal open switch with the motor-pumped well motor
Between or second normal open switch and the B phase electrical input of the motor-pumped well motor between or the third normal open switch
Between the C phase electrical input of the motor-pumped well motor；
In secondary circuit, the 4th normal open switch of the A.C. contactor is connected in parallel with releasing the button, the A.C. contactor
The 4th normal open switch one end connection three phase mains in C phase electricity, the other end the first node of connection；The first branch with second
Road is connected in parallel between first node and the second node；B phase electricity in the second Node connectedness three phase mains；
The first branch includes time relay coil and electric current relay normally closed switch, the time relay coil and institute
State the series connection of electric current relay normally closed switch；
The second branch includes the ac contactor coil, the time relay normally closed switch and the electric current relay
Normal open switch, the ac contactor coil and the time relay normally closed switch are connected in series, and the time relay is normal
Make and break pass is connected in parallel with the electric current relay normal open switch；
It is described to release the button as wink ejector half button.
2. motor-pumped well control cabinet according to claim 1, which is characterized in that further include: electric energy meter；The electrical energy measurement
Table is connected in series between the B phase electricity of the motor-pumped well motor and second node, for measuring and showing the use of motor-pumped well motor
Electricity.
3. motor-pumped well control cabinet according to claim 1, which is characterized in that further include: phase failure protector；The open-phase protection
The first coil of device is connected in series in the first normal open switch of the A.C. contactor and the A phase electrical input of the motor-pumped well motor
Between, the second coil of the phase failure protector is connected in series in the second normal open switch and the motor-pumped well of the A.C. contactor
Between the B phase electrical input of motor, the tertiary coil of the phase failure protector is connected in series in the third of the A.C. contactor
Between normal open switch and the C phase electrical input of the motor-pumped well motor；The normally closed switch of the phase failure protector is connected in series in institute
It states between the second node and the B phase electricity in the three phase mains.
4. motor-pumped well control cabinet according to claim 1, which is characterized in that further include: multiple indicator lights；First indicator light one
End is connect for the A phase electrical input with the motor-pumped well motor, and the other end is connect with the neutral conductor；Second indicator light one end be used for
The B phase electrical input of the motor-pumped well motor connects, and the other end is connect with the neutral conductor；Third indicator light one end is used for and the motor-pumped well
The C phase electrical input of motor connects, and the other end is connect with the neutral conductor.
5. motor-pumped well control cabinet according to claim 1, which is characterized in that further include: breaker；The breaker first is often
Switch is connected in series between the first normal open switch of the A.C. contactor and the A phase electrical input of the motor-pumped well motor；
Second normal open switch of breaker is connected in series in the second normal open switch of the A.C. contactor and the B of the motor-pumped well motor
Between phase electrical input；The breaker third normal open switch be connected in series in the third normal open switch of the A.C. contactor with
Between the C phase electrical input of the motor-pumped well motor.
6. motor-pumped well control cabinet according to claim 1, which is characterized in that further include: fuse；The fuse series connection connects
Be connected to C phase electricity and it is described release the button between, for disconnecting the unlatching when secondary loop current is greater than preset threshold
The connection of button and the C phase electricity.
7. motor-pumped well control cabinet according to claim 1, which is characterized in that the A.C. contactor is 380V ac contactor
Device.
8. a kind of motor-pumped well control method based on any one of the claim 1-7 motor-pumped well control cabinet, which is characterized in that including with
Lower step:
It is described release the button be pressed after, the motor-pumped well control cabinet is started to work, the coil electrification of the A.C. contactor, described
4th normal open switch of A.C. contactor is closed, and realizes that the A.C. contactor is self-locking, while the first of the A.C. contactor
Normal open switch, the second normal open switch, third normal open switch closure, the coil of the time relay are powered；
The coil of the time relay, which is powered, starts timing, if reaching motor-pumped well motor before the setting time of the time relay
It starts switch and is turned on, the coil of major loop conducting, the electric current relay charges, and the normal open switch of the electric current relay closes
It closes, secondary circuit stablizes conducting, and the motor-pumped well motor works normally；
If the motor-pumped well motor start switch is not activated before reaching the setting time of the time relay, major loop is without electricity
Stream, the coil of the electric current relay is not charged, and normal open switch and the normally closed switch of the electric current relay are failure to actuate, when described
Between the disconnection when reaching the time relay setting time of relay normally closed switch, secondary circuit disconnects, motor-pumped well control
Case stops working；
After the motor-pumped well motor start switch is closed, major loop no current, the coil losing electricity of the electric current relay, the electricity
The normal open switch of current relay disconnects, the normally closed switch of the electric current relay is closed, the coil electrification of the time relay
Starting timing, when reaching setting time, the time relay normally closed switch is disconnected, the coil losing electricity of the A.C. contactor,
The first normal open switch of the A.C. contactor, the second normal open switch, third normal open switch in major loop disconnect, and cut off major loop
Power supply.
9. motor-pumped well control method according to claim 8, which is characterized in that the setting time of the electric current relay is 5
Minute.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711374596.1A CN108173242B (en) | 2017-12-19 | 2017-12-19 | Motor-pumped well control cabinet and control method |
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| CN201711374596.1A CN108173242B (en) | 2017-12-19 | 2017-12-19 | Motor-pumped well control cabinet and control method |
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| CN108173242B true CN108173242B (en) | 2019-06-25 |
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| JPH08231193A (en) * | 1995-02-24 | 1996-09-10 | Meidensha Corp | Long lifting height inverter hoist |
| CN2336496Y (en) * | 1998-09-12 | 1999-09-01 | 彭永文 | Safety supply unit |
| CN201098739Y (en) * | 2008-02-13 | 2008-08-13 | 梁磊 | Lathe idling automatic stopping electricity-saving device |
| CN202085114U (en) * | 2011-06-10 | 2011-12-21 | 任旭华 | Battery-friendly controller for pressure reduction start of high power motor and convertion between star and triangle for running |
| CN203617691U (en) * | 2013-12-10 | 2014-05-28 | 路振田 | Water pump wireless remote control open-phase protection receiver |
| CN204696653U (en) * | 2015-04-29 | 2015-10-07 | 高荣生 | Phase shortage automatic control equipment off zero |
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