CN107605760B - A kind of control method of electric pump - Google Patents
A kind of control method of electric pump Download PDFInfo
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- CN107605760B CN107605760B CN201710992947.9A CN201710992947A CN107605760B CN 107605760 B CN107605760 B CN 107605760B CN 201710992947 A CN201710992947 A CN 201710992947A CN 107605760 B CN107605760 B CN 107605760B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000012360 testing method Methods 0.000 claims description 13
- 238000011897 real-time detection Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000004224 protection Effects 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 6
- 230000010349 pulsation Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 9
- 230000003750 conditioning effect Effects 0.000 description 5
- 238000005086 pumping Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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 equipped with water outlet and water inlet, impeller is set in the pump housing, flow switch is set to water inlet, pressure sensor is set to 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 promote electric efficiency, plays energy-saving effect.Magneto can be used cooperatively noninductive FOC vector control method, greatly reduce the torque pulsation of motor, improve motor dynamics response, and motor operation noise is also reduced.Meanwhile solving the drawbacks of traditional electric pump can only be run near voltage rating, it realizes 170~245VAC of Width funtion operation, carries out high-low voltage protection, overcurrent protection, the intelligent protection functions such as leakage protection.
Description
Technical field
The present invention relates to automatic control equipment technical field, in particular to a kind of control method of electric pump.
Background technique
Electric pump be suitable for urban water supply system water intaking/drainage pumping plant, drain off floodwaters/sewerage pumping plant, field irrigation pumping plant,
The rainfall pumping station etc. in highway bridge tunnel.Traditional electric pump mainly uses AC induction motor, and volume is big and low efficiency, electricity
Machine is big to the impact of power grid when starting, and can not achieve Width funtion work.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, is typically run with fixed speed, it can not basis
The practical water yield of user adjusts the motor operation speed of electric pump, is not well positioned to meet the dynamic need of user.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of energy saving and being able to satisfy the electric pump that dynamic is discharged demand
Control method.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
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 equipped with water outlet and water inlet, and the impeller is set in the pump housing, the flow switch be set to it is described into
At the mouth of a river, the pressure sensor is set to 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 method of electric pump is controlled using the control system of above-mentioned electric pump, comprising the following steps:
Step 1: electric pump is powered, and controller carries out self-test and thens follow the steps 2 if self-test is without exception, if self-test is abnormal,
Execute step 8；
Step 2: controller detect input voltage, judge input voltage whether be it is preset can working voltage, if input electricity
Pressure for can working voltage, execute step 3；If input voltage be not can working voltage, then follow the steps 8；
Step 3: starting electric pump, the pressure value of controller monitoring pressure in real time sensor judge whether pressure value is lower than electricity
Pump operation minimal pressure force value thens follow the steps 4 if pressure value runs minimal pressure force value lower than electric pump；If pressure value is greater than or waits
Minimal pressure force value is run in electric pump, executes step 9；
Step 4: operating the impeller of electric pump, while between controller the first self-priming countdown of setting, controller is in the first self-priming
The state of the interior judgement flow switch of countdown, if flow switch thens follow the steps 5 in the first interior opening of self-priming countdown,
If flow switch is not switched in the first self-priming countdown, 6 are thened follow the steps；
Step 5: electric pump enters constant pressure operation mode, judges whether the operation power of electric pump reaches setting upper limit value, if electric
The operation power of pump reaches setting upper limit value, executes step 7 and continues to execute if the operation power of electric pump is not up to upper limit value
Step 5；
Step 6: controller controls impeller accelerated service, while controller is arranged between the second self-priming countdown, and judges to flow
The state for measuring switch, if flow switch thens follow the steps 5, if flow switch is in second in the second interior opening of self-priming countdown
It is not switched in self-priming countdown, thens follow the steps 10；
Step 7: electric pump maintains maximum power operation, and controller judges whether to receive stopping signal, if not receiving shutdown
Signal continues to execute step 7, if receiving stopping signal, executes step 10；
Step 8: controller issues 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 promote electric efficiency, plays
Energy-saving effect；
(2) magneto can be used cooperatively noninductive FOC vector control method, greatly reduce the torque pulsation of motor, improve
Motor dynamics response, motor operation noise are also reduced；
(3) it solves the drawbacks of traditional electric pump can only be run near voltage rating, realizes 170~245VAC of Width funtion fortune
Row carries out high-low voltage protection, overcurrent protection, the intelligent protection functions such as leakage protection；
(4) controller passes through the pressure value of detection flows switch state and pressure sensor, controls the operating status of motor
And running speed, meet the needs of dynamic is discharged.
Detailed description of the invention
Fig. 1 is the structure connection diagram of the control system of electric pump of the invention；
Fig. 2 is the process principle figure of the control method of electric pump of the invention.
Label declaration:
1, controller；2, magneto；3, the pump housing；4, water inlet；5, water outlet；6, pressure sensor；7, flow switch；
8, impeller；9, radiator fan；10, display module；11, keyboard input module.
Specific embodiment
To explain the technical content, the achieved purpose and the effect of the present invention in detail, below in conjunction with embodiment and cooperate attached
Figure is explained.
The most critical design of the present invention is: replacing traditional asynchronous AC motor with magneto, and pass through controller
Detection flows switch and pressure sensor can automatically adjust motor operation speed by water yield according to demand.
Please 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 equipped with water outlet 5 and water inlet 4, and the impeller 8 is set in the pump housing 3,
The flow switch 7 is set at the water inlet 4, and the pressure sensor 6 is set at the water outlet 5, the flow switch 7
It is 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.
As can be seen from the above description, the beneficial effects of the present invention are:
(1) conventional AC asynchronous machine is replaced using magneto, reduces motor volume, and promote electric efficiency, plays
Energy-saving effect；
(2) magneto can be used cooperatively noninductive FOC vector control method, greatly reduce the torque pulsation of motor, improve
Motor dynamics response, motor operation noise are also reduced；
(3) it solves the drawbacks of traditional electric pump can only be run near voltage rating, realizes 170~245VAC of Width funtion fortune
Row carries out high-low voltage protection, overcurrent protection, the intelligent protection functions such as leakage protection.
It further, further include 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 is electrically connected 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 to adjust and check the operating parameter of 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 that pump lift adjusts key, mould
Formula key, turn over/under turn over key, confirmation key and start-stop key.
It further, further include 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, the generation of controller 1 can be dispersed using the rotate driving radiator fan 9 of magneto 2
Heat.
Another technical solution used in the present invention is a kind of side of the control system control electric pump using above-mentioned electric pump
Method, comprising the following steps:
Step 1: electric pump is powered, and controller 1 carries out self-test and thens follow the steps 2 if self-test is without exception, if self-test is abnormal,
Execute step 8；
Step 2: controller 1 detect input voltage, judge input voltage whether be it is preset can working voltage, if input electricity
Pressure for can working voltage, execute step 3；If input voltage be not can working voltage, then follow the steps 8；
Step 3: starting electric pump, the pressure value of 1 monitoring pressure in real time sensor 6 of controller judge whether pressure value is lower than
Electric pump runs minimal pressure force value, if pressure value runs minimal pressure force value lower than electric pump, thens follow the steps 4；If pressure value be greater than or
Minimal pressure force value is run equal to electric pump, executes step 9；
Step 4: operate the impeller 8 of electric pump, while between controller 1 sets the first self-priming countdown, controller 1 first from
The state for inhaling the interior judgement flow switch 7 of countdown, if flow switch 7 executes step in the first interior opening of self-priming countdown
Rapid 5, if flow switch 7 is not switched in the first self-priming countdown, then follow the steps 6；
Step 5: electric pump enters constant pressure operation mode, judges whether the operation power of electric pump reaches setting upper limit value, if electric
The operation power of pump reaches setting upper limit value, executes step 7 and continues to execute if the operation power of electric pump is not up to upper limit value
Step 5；
Step 6: controller 1 controls 8 accelerated service of impeller, while controller 1 is arranged between the second self-priming countdown, and judges
The state of flow switch 7, if flow switch 7 thens follow the steps 5 in the second interior opening of self-priming countdown, if flow switch 7 in
It is not switched in second self-priming countdown, thens follow the steps 10；
Step 7: electric pump maintains maximum power operation, and controller 1 judges whether to receive stopping signal, if not receiving shutdown
Signal continues to execute step 7, if receiving stopping signal, executes step 10；
Step 8: controller 1, which issues alarm sound and controls display module 10, shows alarm signal；
Step 9: electric pump enters standby mode；
Step 10: electric pump is shut down.
Further, in the step 9, every 24 hours starting electric pumps and 30s is operated.
Seen from the above description, electric pump timing operating can play the effect of derusting in standby mode.
Further, the step 3 is into step 7, voltage, the magneto 2 of 1 real-time detection magneto 2 of controller
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 executes the step 8.
Seen from the above description, electric pump is likely to occur the failures such as overvoltage, under-voltage or overcurrent 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 shows alarm content on the display module；To people
Work is handled and is reruned after debugging, and ensure that the reliability of electric pump.
Further, in the step 6, the pressure value of 1 real-time detection pressure sensor 6 of controller judges pressure sensing
The pressure value of device 6 and the size relation of preset pressure value, if the pressure value of pressure sensor 6 is less than preset pressure value, controller 1
It controls motor and improves running speed；If the pressure value of pressure sensor 6 is greater than preset pressure value, controller 1 controls motor and reduces
Running speed.
Seen from the above description, the pressure value that pressure sensor 6 is detected by controller 1, can stablize the pressure at water outlet 5
Power also saves the energy, avoids unnecessary waste of energy.
Further, in the step 6,1 real-time detection of controller and the state for judging flow switch 7, if flow switch 7
It is in an open state, then continues to execute step 6, if flow switch 7 is in off state, then follow the steps 10.
Seen from the above description, electric pump idle running can avoid to the detection of 7 state of flow switch, protects the control system of electric pump
System.
Further, the when a length of 1min between the first self-priming countdown.
Further, the 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 can also be by pressing
Key input module 11 manually adjusts.
Please refer to Fig. 1-2, the embodiment of the present invention one are as follows:
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 equipped with water outlet 5 and water inlet 4, institute
Impeller 8 is stated in the pump housing 3, the flow switch 7 is set at the water inlet 4, and the pressure sensor 6 is set to described
Power supply (PFC) module, one-chip computer module, IPM power module, voltage and current is equipped at water outlet 5, inside the controller 1 to pass
Sensor module, signal conditioning module and communication module, the flow switch 7 and pressure sensor 6 are electrically connected with controller 1 respectively
It connects, 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 connect 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 to adjust and check the operating parameter of 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.
Utilize the method for the control system control electric pump of above-mentioned electric pump, comprising 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 detection and signal conditioning circuit, 7 signal detection of flow switch and conditioning circuit, pressure
6 signal detection of force snesor and the input of conditioning circuit, IPM temperature sensor signal and conditioning circuit and IPM signal and output
Circuit detection, if self-test is without exception, thens follow the steps 2, if self-test is abnormal, thens follow the steps 8；
Step 2: controller 1 detect input voltage, judge input voltage whether be it is preset can working voltage, if input electricity
Pressure for can working voltage, execute step 3；If input voltage be not can working voltage, then follow the steps 8；
Step 3: starting electric pump, the pressure value of 1 monitoring pressure in real time sensor 6 of controller judge whether pressure value is lower than
Electric pump runs minimal pressure force value, if pressure value runs minimal pressure force value lower than electric pump, thens follow the steps 4；If pressure value be greater than or
Minimal pressure force value is run equal to electric pump, executes step 9；
Step 4: operating the impeller 8 of electric pump, while between the setting 1min countdown of controller 1, controller 1 is in 1min countdown
The state of interior judgement flow switch 7, if flow switch 7 thens follow the steps 5 in the interior opening of 1min countdown, if flow is opened
It closes 7 to be not switched in 1min countdown, thens follow the steps 6；
Step 5: electric pump enters constant pressure operation mode, judges whether the operation power of electric pump reaches setting upper limit value, if electric
The operation power of pump reaches setting upper limit value, executes step 7 and continues to execute if the operation power of electric pump is not up to upper limit value
Step 5；The pressure value of 1 real-time detection pressure sensor 6 of controller and the state of flow switch 7, if the pressure of pressure sensor 6
Force value is less than preset pressure value, and controller 1 controls motor and improves running speed；If the pressure value of pressure sensor 6 is greater than default
Pressure value, controller 1, which controls motor, reduces running speed；If flow switch 7 is in an open state, step 5 is continued to execute, if stream
Amount switch 7 is in off state, and thens follow the steps 9；
Step 6: controller 1 controls 8 accelerated service of impeller, while controller 1 is arranged between 3min-5min countdown, and sentences
The state of disconnected flow switch 7, if flow switch 7 thens follow the steps 5 in the interior opening of 3min-5min countdown, if flow switch
7 are not switched in 3min-5min countdown, then follow the steps 10；
Step 7: electric pump maintains maximum power operation, and controller 1 judges whether to receive stopping signal, if not receiving shutdown
Signal continues to execute step 7, if receiving stopping signal, executes step 10；
Step 8: controller 1, which issues alarm sound and controls display module 10, shows alarm signal；
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.
The step 3 is into step 7, the voltage of 1 real-time detection magneto 2 of controller, the electric current of magneto 2 and control
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, executes the step 8.
In conclusion the present invention provides the controlling parties of electric pump that is a kind of energy saving and being able to satisfy dynamic water outlet demand
Method.The present invention replaces conventional AC asynchronous machine using magneto, reduces motor volume, and promote electric efficiency, plays section
It can effect；Magneto can be used cooperatively noninductive FOC vector control method, greatly reduce the torque pulsation of motor, improve motor
Dynamic response, motor operation noise are also reduced.This invention also solves traditional electric pumps to run near voltage rating
The drawbacks of, it realizes 170~245VAC of Width funtion operation, carries out high-low voltage protection, overcurrent protection, the intelligent protections such as leakage protection
Function；The controller of setting passes through the pressure value of detection flows switch state and pressure sensor, controls the operating status of motor
And running speed, meet the needs of dynamic is discharged, is more energy-saving and environmentally friendly.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalents made by bright specification and accompanying drawing content are applied directly or indirectly in relevant technical field, similarly include
In scope of patent protection of the invention.
Claims (7)
1. a kind of control method of electric pump, which is characterized in that the control system of the electric pump includes the pump housing, impeller, controller, stream
Switch, pressure sensor, magneto, display module, keyboard input module and radiator fan are measured, the pump housing is equipped with water outlet
Mouth and water inlet, the impeller are set in the pump housing, and the flow switch is set to the water inlet, the pressure sensor
Set on the water outlet, the flow switch and pressure sensor are electrically connected with the controller respectively, the impeller and it is described forever
One end of the power output shaft of magneto is connected；
The display module is electrically connected with keyboard input module, the display module be electrically connected with keyboard input module respectively with control
Device electrical connection processed, the display module are used to show the operation conditions of electric pump, and the keyboard input module is for adjusting and checking
The operating parameter of the electric pump；
The radiator fan is connected with the other end of the power output shaft of magneto, and the air-out direction of the radiator fan with
Controller is correspondingly arranged；
The control method of the electric pump the following steps are included:
Step 1: electric pump is powered, and controller carries out self-test and thens follow the steps 2 if self-test is without exception, if self-test is abnormal, executes
Step 8；
Step 2: controller detect input voltage, judge input voltage whether be it is preset can working voltage, if input voltage is
Can working voltage, execute step 3；If input voltage be not can working voltage, then follow the steps 8；
Step 3: starting electric pump, the pressure value of controller monitoring pressure in real time sensor judge whether pressure value is lower than electric pump fortune
Row minimal pressure force value thens follow the steps 4 if pressure value runs minimal pressure force value lower than electric pump；If pressure value is greater than or equal to electricity
Pump operation minimal pressure force value executes step 9；
Step 4: operating the impeller of electric pump, while between controller the first self-priming countdown of setting, controller falls to count in the first self-priming
The state that flow switch is judged in time, if flow switch thens follow the steps 5 in the first interior opening of self-priming countdown, if stream
Amount switch is not switched in the first self-priming countdown, thens follow the steps 6；
Step 5: electric pump enters constant pressure operation mode, judges whether the operation power of electric pump reaches setting upper limit value, if electric pump
It runs power and reaches setting upper limit value, execute step 7 if the operation power of electric pump is not up to upper limit value and continue to execute step
5；
Step 6: controller controls impeller accelerated service, while controller is arranged between the second self-priming countdown, and judges that flow is opened
The state of pass, if flow switch thens follow the steps 5 in the second interior opening of self-priming countdown, if flow switch is in the second self-priming
It is not switched in countdown, thens follow the steps 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 to execute, if receiving stopping signal, executes step 10；
Step 8: controller, which issues alarm sound and controls display module, shows alarm signal；
Step 9: electric pump enters standby mode；
Step 10: electric pump is shut down.
2. the control method of electric pump according to claim 1, which is characterized in that in the step 9, started every 24 hours
Electric pump simultaneously operates 30s.
3. the control method of electric pump according to claim 1, which is characterized in that the step 3 is into step 7, controller
The running temperature of the voltage of real-time detection magneto, the electric current of magneto and controller judges that electric pump and controller are being transported
Whether row breaks down in the process, if electric pump or controller break down, executes the step 8.
4. the control method of electric pump according to claim 1, which is characterized in that in the step 5, controller real-time detection
The pressure value of pressure sensor judges the pressure value of pressure sensor and the size relation of preset pressure value, if pressure sensor
Pressure value be less than preset pressure value, controller control magneto improve running speed；If the pressure value of pressure sensor is big
In preset pressure value, controller, which controls magneto, reduces running speed.
5. the control method of electric pump according to claim 1, which is characterized in that in the step 5, controller real-time detection
And judge the state of flow switch, if flow switch is in an open state, step 5 is continued to execute, if flow switch is to close shape
State thens follow the steps 9.
6. the control method of electric pump according to claim 1, which is characterized in that the duration between the first self-priming countdown
For 1min.
7. the control method of electric pump according to claim 1, which is characterized in that the duration between the second self-priming countdown
For 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES2828633T3 (en) * | 2018-04-17 | 2021-05-27 | Xylem Europe Gmbh | Drain pump assembly and method of controlling a drain 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 |
| CN108843549B (en) * | 2018-07-09 | 2020-03-17 | 浙江澳滨泵业有限公司 | Control method of water pump |
| 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 |
| CN113446236B (en) * | 2021-07-08 | 2022-11-29 | 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 |
| CN118148895B (en) * | 2024-05-10 | 2024-07-19 | 长沙多浦乐泵业科技有限公司 | New energy electric pump micro-control method |
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| CN107605760A (en) | 2018-01-19 |
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Granted publication date: 20190827 |