CN107605760A - The control system and control method of a kind of electric pump - Google Patents
The control system and control method of a kind of electric pump Download PDFInfo
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- CN107605760A CN107605760A CN201710992947.9A CN201710992947A CN107605760A CN 107605760 A CN107605760 A CN 107605760A CN 201710992947 A CN201710992947 A CN 201710992947A CN 107605760 A CN107605760 A CN 107605760A
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Abstract
A kind of control system of electric pump, including the pump housing, impeller, controller, flow switch, pressure sensor and magneto, the pump housing is provided with delivery port and water inlet, impeller is in the pump housing, flow switch is located at water inlet, pressure sensor is located at water outlet, and flow switch and pressure sensor are electrically connected with the controller respectively, and impeller is connected with one end of the power output shaft of magneto.The present invention replaces conventional AC asynchronous machine using magneto, reduces motor volume, and lifting motor efficiency, plays energy-saving effect.Magneto can be used cooperatively noninductive FOC vector control methods, greatly reduce the torque pulsation of motor, improve motor dynamics response, and motor operation noise is also reduced.Meanwhile solve the drawbacks of traditional electric pump can only be run near rated voltage, realize that 170~245VAC of Width funtion is run, carry out the intelligent protection functions such as high-low voltage protection, overcurrent protection, leakage protection.
Description
Technical field
The present invention relates to automatic control equipment technical field, the control system and control method of more particularly to a kind of electric pump.
Background technology
Electric pump be applied to urban water supply system water intaking/drainage pumping plant, drain off floodwaters/sewer pumping plant, field irrigation pumping plant,
The rainfall pumping station in highway bridge tunnel etc..Traditional electric pump mainly uses AC induction motor, and volume is big and efficiency is low, electricity
Impact when machine starts to power network is big, it is impossible to realizes that Width funtion works.Usually motor is caused to open because scope range of the fluctuation of voltage is big
Dynamic failure, burns motor.Meanwhile existing electric pump intelligent level is not high, typically run with fixed speed, can not basis
The motor operation speed of the actual water yield regulation electric pump of user, it is impossible to meet the dynamic need of user well.
The content of the invention
The technical problems to be solved by the invention are：A kind of saving energy is provided and the electric pump of dynamic water outlet demand can be met
Control system and control method.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of control system of electric pump, including the pump housing, impeller, controller, flow switch, pressure sensor and Permanent Magnet and Electric
Machine, the pump housing are provided with delivery port and water inlet, and in the pump housing, the flow switch enters the impeller described in
At the mouth of a river, the pressure sensor is located at the water outlet, and the flow switch and pressure sensor are electric with controller respectively
Connection, the impeller are connected with one end of the power output shaft of the magneto.
Another technical solution used in the present invention is；
A kind of method that control system using above-mentioned electric pump controls electric pump, comprises the following steps：
Step 1：Electric pump is powered, and controller carries out self-test, if self-test is without exception, performs step 2, if self-test is abnormal,
Perform step 8；
Step 2：Controller detect input voltage, judge input voltage whether be it is default can working voltage, if input electricity
Press for can working voltage, perform step 3；If input voltage for can working voltage, perform step 8；
Step 3：Start electric pump, the pressure value of controller monitoring pressure in real time sensor, judge pressure value whether less than electricity
Pump operation minimal pressure force value, if pressure value performs step 4 less than electric pump operation minimal pressure force value；If pressure value is more than or waited
Minimal pressure force value is run in electric pump, performs step 9；
Step 4：The impeller of electric pump is operated, while between controller the first self-priming countdown of setting, controller is in the first self-priming
The interior state for judging flow switch of countdown, if flow switch in the first interior opening of self-priming countdown, performs step 5,
If flow switch is not switched in the first self-priming countdown, step 6 is performed；
Step 5：Electric pump enters constant pressure operation mode, judges whether the operation power of electric pump reaches setting higher limit, if electric
The operation power of pump reaches setting higher limit, performs step 7, if the operation power of electric pump is not up to higher limit, continues executing with
Step 5；
Step 6：Between controller controls impeller accelerated service, while controller sets the second self-priming countdown, and judge to flow
The state of switch is measured, if flow switch performs step 5, if flow switch is in second in the second interior opening of self-priming countdown
It is not switched in self-priming countdown, then performs step 10；
Step 7：Electric pump maintains maximum power operation, and controller judges whether to receive stopping signal, if not receiving shutdown
Signal, step 7 is continued executing with, if receiving stopping signal, perform step 10；
Step 8：Controller sends alarm sound；
Step 9：Electric pump enters standby mode；
Step 10：Electric pump is shut down.
The beneficial effects of the present invention are：
(1) conventional AC asynchronous machine is replaced using magneto, reduces motor volume, and lifting motor efficiency, play
Energy-saving effect；
(2) magneto can be used cooperatively noninductive FOC vector control methods, greatly reduce the torque pulsation of motor, improve
Motor dynamics are responded, and motor operation noise is also reduced；
(3) solve the drawbacks of traditional electric pump can only be run near rated voltage, realize that 170~245VAC of Width funtion is transported
OK, the intelligent protection functions such as high-low voltage protection, overcurrent protection, leakage protection are carried out；
(4) controller passes through the pressure value of detection flows on off state and pressure sensor, the running status of controlled motor
And running speed, meet the needs of dynamic water outlet.
Brief description of the drawings
Fig. 1 is the structure connection diagram of the control system of the electric pump of the present invention；
Fig. 2 is the process principle figure of the control method of the electric pump of the present invention.
Label declaration：
1st, controller；2nd, magneto；3rd, the pump housing；4th, water inlet；5th, delivery port；6th, pressure sensor；7th, flow switch；
8th, impeller；9th, radiator fan；10th, display module；11st, keyboard input module.
Embodiment
To describe the technology contents of the present invention, the objects and the effects in detail, below in conjunction with embodiment and coordinate attached
Figure is explained.
The design of most critical of the present invention is：Traditional asynchronous AC motor is replaced with magneto, and passes through controller
Detection flows switch and pressure sensor, can the water yield self-regulation motor speed of service according to demand.
It refer to Fig. 1-2, a kind of control system of electric pump, including the pump housing 3, impeller 8, controller 1, flow switch 7, pressure
Sensor 6 and magneto 2, the pump housing 3 are provided with delivery port 5 and water inlet 4, and the impeller 8 is located in the pump housing 3,
The flow switch 7 is at the water inlet 4, and the pressure sensor 6 is at the delivery port 5, the flow switch 7
Electrically connected respectively with controller 1 with pressure sensor 6, one end phase of the impeller 8 and the power output shaft of the magneto 2
Even.
It was found from foregoing description, the beneficial effects of the present invention are：
(1) conventional AC asynchronous machine is replaced using magneto, reduces motor volume, and lifting motor efficiency, play
Energy-saving effect；
(2) magneto can be used cooperatively noninductive FOC vector control methods, greatly reduce the torque pulsation of motor, improve
Motor dynamics are responded, and motor operation noise is also reduced；
(3) solve the drawbacks of traditional electric pump can only be run near rated voltage, realize that 170~245VAC of Width funtion is transported
OK, the intelligent protection functions such as high-low voltage protection, overcurrent protection, leakage protection are carried out.
Further, in addition to display module 10 and keyboard input module 11, the display module 10 and key-press input mould
Block 11 is electrically connected, and the display module 10 electrically connects with controller 1 respectively with keyboard input module 11, and the display module 10 is used
In the operation conditions of display electric pump, the keyboard input module 11 is used for the operational factor for adjusting and checking the electric pump.
Seen from the above description, display module 10 can be 4 LED charactrons or lcd screen, intuitively show electric pump
Operation conditions, including present input voltage, input current, input power, motor speed, outlet pressure (pump head), water pump
Controller temperature, fault of water pump information (current or historical failure).Keyboard input module 11 includes pump lift adjustment button, mould
Formula button, on turn over/under turn over button, confirm button and start-stop button.
Further, in addition to radiator fan 9, the other end of the radiator fan 9 and the power output shaft of magneto 2
It is connected, and the air-out direction of the radiator fan 9 is correspondingly arranged with controller 1.
Seen from the above description, can be dispersed caused by controller 1 using the rotation driving radiator fan 9 of magneto 2
Heat.
Another technical solution used in the present invention is that a kind of control system using above-mentioned electric pump controls the side of electric pump
Method, comprise the following steps：
Step 1：Electric pump is powered, and controller 1 carries out self-test, if self-test is without exception, performs step 2, if self-test is abnormal,
Perform step 8；
Step 2：Controller 1 detect input voltage, judge input voltage whether be it is default can working voltage, if input electricity
Press for can working voltage, perform step 3；If input voltage for can working voltage, perform step 8；
Step 3：Start electric pump, the pressure value of the monitoring pressure in real time sensor 6 of controller 1, judge whether pressure value is less than
Electric pump runs minimal pressure force value, if pressure value performs step 4 less than electric pump operation minimal pressure force value；If pressure value be more than or
Minimal pressure force value is run equal to electric pump, performs step 9；
Step 4：Operate electric pump impeller 8, while controller 1 set the first self-priming countdown between, controller 1 first from
The interior state for judging flow switch 7 of countdown is inhaled, if flow switch 7 in the first interior opening of self-priming countdown, performs step
Rapid 5, if flow switch 7 is not switched in the first self-priming countdown, perform step 6；
Step 5：Electric pump enters constant pressure operation mode, judges whether the operation power of electric pump reaches setting higher limit, if electric
The operation power of pump reaches setting higher limit, performs step 7, if the operation power of electric pump is not up to higher limit, continues executing with
Step 5；
Step 6：Between controller 1 controls the accelerated service of impeller 8, while controller 1 sets the second self-priming countdown, and judge
The state of flow switch 7, if flow switch 7 in the second interior opening of self-priming countdown, performs step 5, if flow switch 7 in
It is not switched in second self-priming countdown, then performs step 10；
Step 7：Electric pump maintains maximum power operation, and controller 1 judges whether to receive stopping signal, if not receiving shutdown
Signal, step 7 is continued executing with, if receiving stopping signal, perform step 10；
Step 8：Controller 1 sends alarm sound and controls the display alarm signal of display module 10；
Step 9：Electric pump enters standby mode；
Step 10：Electric pump is shut down.
Further, in the step 9, started electric pump every 24 hours and operate 30s.
Seen from the above description, electric pump timing operating can play the effect of derusting in standby mode.
Further, for the step 3 into step 7, controller 1 detects voltage, the magneto 2 of magneto 2 in real time
Electric current and controller 1 running temperature, judge whether electric pump and controller break down in the process of running, if electric pump or control
Device processed breaks down, then performs the step 8.
Seen from the above description, electric pump is likely to occur the failures such as overvoltage, under-voltage or excessively stream in the process of running, control
Device 1 is likely to occur the failures such as excess temperature, and after failure, controller 1 is alarmed, and the display alarm content on display module；Treat people
Work is handled and reruned after fixing a breakdown, and ensure that the reliability of electric pump.
Further, in the step 6, controller 1 detects the pressure value of pressure sensor 6 in real time, judges pressure sensing
The pressure value of device 6 and the magnitude relationship of preset pressure value, if the pressure value of pressure sensor 6 is less than preset pressure value, controller 1
Controlled motor improves running speed；If the pressure value of pressure sensor 6 is more than preset pressure value, the controlled motor of controller 1 reduces
Running speed.
Seen from the above description, the pressure value of pressure sensor 6 is detected by controller 1, the pressure at delivery port 5 can be stablized
Power, the energy is also saved, avoid unnecessary waste of energy.
Further, in the step 6, controller 1 detects in real time and judges the state of flow switch 7, if flow switch 7
For open mode, then step 6 is continued executing with, if flow switch 7 is closed mode, perform step 10.
Seen from the above description, the detection to the state of flow switch 7 can avoid electric pump from dallying, and protect the control system of electric pump
System.
Further, when a length of 1min between the first self-priming countdown.
Further, when a length of 3min-5min between the second self-priming countdown.
Seen from the above description, the duration between the first self-priming countdown between the second self-priming countdown also can by by
Key input module 11 manually adjusts.
Fig. 1-2 is refer to, embodiments of the invention one are：
A kind of control system of electric pump, including the pump housing 3, impeller 8, controller 1, radiator fan 9, flow switch 7, display mould
Block 10, keyboard input module 11, pressure sensor 6 and magneto 2, the pump housing 3 are provided with delivery port 5 and water inlet 4, institute
Impeller 8 is stated in the pump housing 3, the flow switch 7 is at the water inlet 4, and the pressure sensor 6 is located at described
At delivery port 5, the inside of controller 1 is provided with power supply (PFC) module, one-chip computer module, IPM power models, voltage x current and passed
Sensor module, Signal-regulated kinase and communication module, the flow switch 7 and pressure sensor 6 are electrically connected with controller 1 respectively
Connect, the impeller 8 is connected with one end of the power output shaft of the magneto 2, the display module 10 and key-press input mould
Block 11 is electrically connected, and the display module 10 is connected with controller electricity 1 respectively with keyboard input module 11, and the display module 10 is used
In the operation conditions of display electric pump, the keyboard input module 11 is used for the operational factor for adjusting and checking the electric pump, described
Radiator fan 9 is connected with the other end of the power output shaft of magneto 2, and the air-out direction of the radiator fan 9 and control
Device 1 is correspondingly arranged.
The method for controlling electric pump using the control system of above-mentioned electric pump, comprises the following steps：
Step 1：Electric pump is powered, and controller 1 carries out self-test, and self-test project includes direct current bus voltage detecting circuit, bus
Current detection circuit, motor UVW three-phase current detections and signal conditioning circuit, the signal detection of flow switch 7 and modulate circuit, pressure
The signal detection of force snesor 6 and modulate circuit, IPM temperature sensor signals and modulate circuit and the input of IPM signals and output
Electric circuit inspection, if self-test is without exception, step 2 is performed, if self-test is abnormal, perform step 8；
Step 2：Controller 1 detect input voltage, judge input voltage whether be it is default can working voltage, if input electricity
Press for can working voltage, perform step 3；If input voltage for can working voltage, perform step 8；
Step 3：Start electric pump, the pressure value of the monitoring pressure in real time sensor 6 of controller 1, judge whether pressure value is less than
Electric pump runs minimal pressure force value, if pressure value performs step 4 less than electric pump operation minimal pressure force value；If pressure value be more than or
Minimal pressure force value is run equal to electric pump, performs step 9；
Step 4：The impeller 8 of electric pump is operated, while between the setting 1min countdowns of controller 1, controller 1 is in 1min countdowns
The interior state for judging flow switch 7, if flow switch 7 is in the interior opening of 1min countdowns, execution step 5, if flow is opened
Close 7 to be not switched in 1min countdowns, then perform step 6；
Step 5：Electric pump enters constant pressure operation mode, judges whether the operation power of electric pump reaches setting higher limit, if electric
The operation power of pump reaches setting higher limit, performs step 7, if the operation power of electric pump is not up to higher limit, continues executing with
Step 5；Controller 1 detects the pressure value of pressure sensor 6 and the state of flow switch 7 in real time, if the pressure of pressure sensor 6
Force value is less than preset pressure value, and the controlled motor of controller 1 improves running speed；If the pressure value of pressure sensor 6 is more than default
Pressure value, the controlled motor of controller 1 reduce running speed；If flow switch 7 is open mode, step 5 is continued executing with, if stream
Amount switch 7 is closed mode, then performs step 9；
Step 6：Between controller 1 controls the accelerated service of impeller 8, while controller 1 sets 3min-5min countdowns, and sentence
The state of disconnected flow switch 7, if flow switch 7 performs step 5, if flow switch in the interior opening of 3min-5min countdowns
7 are not switched in 3min-5min countdowns, then perform step 10；
Step 7：Electric pump maintains maximum power operation, and controller 1 judges whether to receive stopping signal, if not receiving shutdown
Signal, step 7 is continued executing with, if receiving stopping signal, perform step 10；
Step 8：Controller 1 sends alarm sound and controls the display alarm signal of display module 10；
Step 9：Electric pump enters standby mode, and electric pump every self-starting in 24 hours and operates 30s in standby mode；
Step 10：Electric pump is shut down.
For the step 3 into step 7, controller 1 detects the voltage of magneto 2, the electric current of magneto 2 and control in real time
The running temperature of device 1 processed, judges whether electric pump overvoltage, under-voltage or over current fault occurs in the process of running, and judges to control
Whether device 1 processed there is excess temperature failure, if electric pump or controller 1 break down, performs the step 8.
In summary, the invention provides a kind of control system for saving the energy and the electric pump that can meet dynamic water outlet demand
And control method.The present invention replaces conventional AC asynchronous machine using magneto, reduces motor volume, and lifting motor is imitated
Rate, play energy-saving effect；Magneto can be used cooperatively noninductive FOC vector control methods, greatly reduce the torque pulsation of motor,
Motor dynamics response is improved, motor operation noise is also reduced.Can only be in rated voltage this invention also solves traditional electric pump
Nearby the drawbacks of operation, realize that 170~245VAC of Width funtion is run, carry out high-low voltage protection, overcurrent protection, leakage protection etc.
Intelligent protection function；The controller of setting by the pressure value of detection flows on off state and pressure sensor, controlled motor
Running status and running speed, meet the needs of dynamic water outlet, more energy-conserving and environment-protective.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalents that bright specification and accompanying drawing content are made, or the technical field of correlation is directly or indirectly used in, similarly include
In the scope of patent protection of the present invention.
Claims (10)
1. a kind of control system of electric pump, including the pump housing and impeller, the pump housing is provided with delivery port and water inlet, the impeller
In the pump housing, it is characterised in that also including controller, flow switch, pressure sensor and magneto, the flow
Switch is located at the water inlet, and the pressure sensor is located at the water outlet, the flow switch and pressure sensor
It is electrically connected with the controller respectively, the impeller is connected with one end of the power output shaft of the magneto.
2. the control system of electric pump according to claim 1, it is characterised in that also including display module and key-press input mould
Block, the display module electrically connect with keyboard input module, the display module electrically connected with keyboard input module respectively with control
Device electrical connection processed, the display module are used for the operation conditions for showing electric pump, and the keyboard input module is used to adjust and check
The operational factor of the electric pump.
3. the control system of electric pump according to claim 2, it is characterised in that also including radiator fan, the radiation air
Fan is connected with the other end of the power output shaft of magneto, and the air-out direction of the radiator fan is corresponding with controller sets
Put.
4. a kind of method of the control system control electric pump of electric pump using described in any one of Claims 2 or 33, its feature exist
In comprising the following steps：
Step 1：Electric pump is powered, and controller carries out self-test, if self-test is without exception, performs step 2, if self-test is abnormal, performs
Step 8；
Step 2：Controller detect input voltage, judge input voltage whether be it is default can working voltage, if input voltage is
Can working voltage, perform step 3；If input voltage for can working voltage, perform step 8；
Step 3：Start electric pump, the pressure value of controller monitoring pressure in real time sensor judges whether pressure value transports less than electric pump
Row minimal pressure force value, if pressure value performs step 4 less than electric pump operation minimal pressure force value；If pressure value is more than or equal to electricity
Pump operation minimal pressure force value, perform step 9；
Step 4：The impeller of electric pump is operated, while between controller the first self-priming countdown of setting, controller falls to count in the first self-priming
The state of flow switch is judged in time, if flow switch is in the first interior opening of self-priming countdown, execution step 5, if stream
Amount switch is not switched in the first self-priming countdown, then performs step 6；
Step 5：Electric pump enters constant pressure operation mode, judges whether the operation power of electric pump reaches setting higher limit, if electric pump
Run power and reach setting higher limit, perform step 7, if the operation power of electric pump is not up to higher limit, continue executing with step
5；
Step 6：Between controller controls impeller accelerated service, while controller sets the second self-priming countdown, and judge that flow is opened
The state of pass, if flow switch performs step 5, if flow switch is in the second self-priming in the second interior opening of self-priming countdown
It is not switched in countdown, then performs step 10；
Step 7：Electric pump maintains maximum power operation, and controller judges whether to receive stopping signal, if not receiving stopping signal,
Step 7 is continued executing with, if receiving stopping signal, performs step 10；
Step 8：Controller sends alarm sound and controls display module display alarm signal；
Step 9：Electric pump enters standby mode；
Step 10：Electric pump is shut down.
5. the control method of electric pump according to claim 4, it is characterised in that in the step 9, started every 24 hours
Electric pump simultaneously operates 30s.
6. the control method of electric pump according to claim 4, it is characterised in that the step 3 is into step 7, controller
Voltage, the electric current of magneto and the running temperature of controller of detection magneto in real time, judges that electric pump and controller are being transported
Whether broken down during row, if electric pump or controller break down, perform the step 8.
7. the control method of electric pump according to claim 4, it is characterised in that in the step 5, controller detects in real time
The pressure value of pressure sensor, the pressure value of pressure sensor and the magnitude relationship of preset pressure value are judged, if pressure sensor
Pressure value be less than preset pressure value, controller control magneto improves running speed；If the pressure value of pressure sensor is big
In preset pressure value, controller control magneto reduces running speed.
8. the control method of electric pump according to claim 4, it is characterised in that in the step 5, controller detects in real time
And judge the state of flow switch, if flow switch is open mode, step 5 is continued executing with, if flow switch is closing shape
State, then perform step 9.
9. the control method of electric pump according to claim 4, it is characterised in that the duration between the first self-priming countdown
For 1min.
10. the control method of electric pump according to claim 4, it is characterised in that between the second self-priming countdown when
A length of 3min-5min.
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| CN201710992947.9A CN107605760B (en) | 2017-10-23 | 2017-10-23 | A kind of control method of electric pump |
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| CN201710992947.9A CN107605760B (en) | 2017-10-23 | 2017-10-23 | A kind of control method of electric pump |
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| CN108843549A (en) * | 2018-07-09 | 2018-11-20 | 浙江澳滨泵业有限公司 | A kind of control method of water pump |
| CN110469495A (en) * | 2018-05-11 | 2019-11-19 | 上海威派格智慧水务股份有限公司 | A kind of method for diagnosing faults of more water pump water supply systems |
| CN111706517A (en) * | 2020-05-27 | 2020-09-25 | 湖南耐普泵业股份有限公司 | Intelligent permanent magnet leakage-free pump |
| CN111989494A (en) * | 2018-04-17 | 2020-11-24 | 赛莱默欧洲有限公司 | Drain pump assembly and method for controlling drain pump |
| CN113446236A (en) * | 2021-07-08 | 2021-09-28 | 上海威派格智慧水务股份有限公司 | Centrifugal pump idle protection method and device and edge gateway |
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| CN113446236A (en) * | 2021-07-08 | 2021-09-28 | 上海威派格智慧水务股份有限公司 | Centrifugal pump idle protection method and device and edge gateway |
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| CN107605760B (en) | 2019-08-27 |
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