CN108131303A - A kind of water pump temperature-controlled regulating system and control method - Google Patents
A kind of water pump temperature-controlled regulating system and control method Download PDFInfo
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- CN108131303A CN108131303A CN201711457562.9A CN201711457562A CN108131303A CN 108131303 A CN108131303 A CN 108131303A CN 201711457562 A CN201711457562 A CN 201711457562A CN 108131303 A CN108131303 A CN 108131303A
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- temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a kind of water pump temperature-controlled regulating system and control methods, including flow sensor, temperature sensor, pressure sensor, display and controller, the flow sensor is arranged on pump intake, the temperature sensor and pressure sensor are arranged on the water cavity bottom of water pump, the motor shaft of the motor is connect with water pump vane, the flow sensor, temperature sensor and pressure sensor are connect respectively with controller signals input terminal, the display, motor is connect respectively with control signal output, the controller is used to receive flow sensor, the signal of temperature sensor and pressure sensor transmission is simultaneously transported to display on display while exports the startup of control signal control motor or stop.The present invention can realize water pump Anti-freezing function, it is simple in structure, practicability is good, production and use cost are low, and using adjusting power-up period and stopping duty cycle time, realizes that extension exchange and facilitates regulating water flow at electric pump service life, variable-frequency motor Shortcomings are solved, so as to save maintenance cost.
Description
Technical field
The present invention relates to a kind of water pump control methods, and in particular to a kind of water pump temperature-controlled regulating system and control method.
Background technology
Water pump is the machinery for conveying liquid or being pressurized liquid.It transmits the mechanical energy of prime mover or other external energies
To liquid, increase liquid energy, be mainly used to conveying liquid and include water, oil, acid ＆ alkali liquid, emulsion, suspended emulsion and liquid gold
Belong to etc., it can also convey liquid, admixture of gas and the liquid containing suspended solids.
The technical parameter of pump performance has flow, suction, lift, shaft power, water-horse power, efficiency etc.；According to different works
The types such as volume water pump, vane pump can be divided by making principle.
Positive displacement pump is to transmit energy using the variation of its swept volume of a single chamber；Vane pump is the phase using rotary vane and water
Energy is transmitted in interaction, there is a types such as centrifugal pump, axial-flow pump and mixed-flow pump.
Existing water pump is in order to realize that water flow is adjusted, generally using variable frequency pump, but in use, due to
Voltage frequently changes, and be easy to cause variable frequency pump loss.
Invention content
Goal of the invention：The present invention proposes a kind of water pump temperature-controlled regulating system and controlling party for deficiency of the prior art
Method, it is simple in structure, practicability is good, production and use cost it is low, and using adjust power-up period and stop duty cycle time, realize
Extension exchanges electric pump service life and facilitates regulating water flow, variable-frequency motor Shortcomings is solved, so as to save maintenance cost.
Technical solution：A kind of water pump temperature-controlled regulating system of the present invention, including flow sensor, temperature sensor,
Pressure sensor, display and controller, the flow sensor are arranged on pump intake, the temperature sensor and
Pressure sensor is arranged on the water cavity bottom of water pump, and the motor shaft of the motor is connect with water pump vane, the flow sensor,
Temperature sensor and pressure sensor are connect respectively with controller signals input terminal, the display, motor respectively with control
Signal output end connects, and the controller is used for the signal for receiving flow sensor, temperature sensor and pressure sensor are sent
And it is transported to and the startup of control signal control motor is shown while exported on display or is stopped.
The invention also discloses a kind of above-mentioned control methods of water pump temperature-controlled regulating system：
（1）After water pump is inserted into power supply, controller in duration t1 adopt successively by flow sensor and pressure sensor
The signal of collection is received and is shown by display, judges that flow sensor breaks down if flow signal is shown,
Pressure signal is detected if without flow signal, judges that pressure sensor breaks down if no pressure signal at this time,
If there is pressure signal then performs next step；
（2）Start water pump, then water temperature and be sent to controller in temperature sensor acquisition water cavity, controller is by temperature sensor
Water temperature is compared with preset temperature T1 in water cavity, if water temperature is more than preset temperature T1 in water cavity, controller control water pump closes
It closes, if water temperature is less than or equal to preset temperature T1 in water cavity, water pump enters normal mode；
（3）The on/off of controller control water pump realizes regulating water flow；Working condition residing for water pump accordingly adjusts duty
Compare dwell time；Temperature sensor is detected coolant-temperature gage, and the temperature for detecting water outlet is less than or greater than or equal to predetermined temperature
It feeds back on controller, for controller according to the temperature gap of predetermined temperature value and actual temperature, adjust exchange water pump uses shape
The duty ratio dwell time of state reaches designated value until detecting the temperature difference value between leaving water temperature and set temperature, stablizes
Output duty cycle, water pump output are stablized；
（4）After water pump enters normal mode, flow sensor has detected whether flow signal, if there is flow signal continues just
Norm formula, detects pressure signal if without flow signal, if not detecting pressure signal, judges that water pump is in dry
Operating condition simultaneously carries out anti-dry operating rate-determining steps, if a pressure be detected that signal, then recycle perform this step until timing extremely
Preset time t 2；
（5）When not detecting that flow signal still has pressure signal and duration to be more than preset time t 2 in step (4)
When, it switches off the pump and performs Anti-freezing rate-determining steps, then proceed to detection pressure signal, if not detecting pressure signal,
Then start water pump and return to normal mode, if a pressure be detected that signal, is again switched off water pump and performs Anti-freezing rate-determining steps.
Further, step（2）It further includes after water pump closes a period of time, temperature sensor acquires water in water cavity again
Temperature, and by water temperature in water cavity compared with preset temperature T2 in controller, opened when water temperature is less than preset temperature T2 in water cavity
Dynamic water pump enters normal mode.
Further, step（4）Anti- dry operating rate-determining steps are carried out to include：Pressure signal and flow signal are detected, when
Dry operating rate-determining steps are exited when detecting pressure signal and flow signal；When do not detect pressure signal and flow letter
Number when, carry out water pump operation timing, if the water pump operation time is more than preset time t 3, switch off the pump and to dry operating shape
State number is counted, while sets duration threshold according to the dry operating condition of different numbers, is more than threshold when the duration
Start water pump during value and perform dry operating rate-determining steps again.
Further, the dry operating condition count totals be 3, when dry operating condition number be 1 when, setting it is lasting when
Between threshold value be 1 hour, when dry operating condition number be 2 when, the duration threshold set as 2 hours, when do operate shape
When state number is 3, the duration threshold set is 24 hour.
Further, step（4）Anti-freezing rate-determining steps are carried out to include：Water temperature in water cavity is acquired by temperature sensor
And compared with the preset temperature T3 degree in controller, water is closed when water temperature is spent more than or equal to preset temperature T3 in water cavity
It pumps and exits Anti-freezing rate-determining steps；When water temperature is spent less than preset temperature T3 in water cavity, start water pump and pass through display
It shows the working condition of water pump, then detect water temperature in water cavity again and is compared with preset temperature T4 degree in controller,
It switches off the pump when water temperature is spent more than preset temperature T4 in water cavity and exits Anti-freezing rate-determining steps, when water temperature is less than in advance in water cavity
If carrying out timing when temperature T4 is spent, water is again started up when water temperature is spent more than preset temperature T5 in water cavity after t4 seconds at runtime
Pump operation when water temperature is spent less than preset temperature T5 in water cavity after t4 seconds at runtime, shows pump working state and alarms.
Further, the temperature sensor detects leaving water temperature at 5 DEG C or 5 DEG C or more, exchanges the duty ratio of water pump
Dwell time.
Advantageous effect：The present invention can realize water pump Anti-freezing function, it is simple in structure, practicability is good, production and use into
This is low, and using adjusting power-up period and stopping duty cycle time, realizes and extend exchange electric pump service life and facilitate adjusting water
Flow solves variable-frequency motor Shortcomings, so as to save maintenance cost.
Specific embodiment
With reference to specific embodiment, the invention will be further described：
Embodiment 1
A kind of water pump temperature-controlled regulating system, including flow sensor, temperature sensor, pressure sensor, display and control
Device, the flow sensor are arranged on pump intake, and the temperature sensor and pressure sensor are arranged on the water of water pump
Bottom of chamber portion, the motor shaft of the motor are connect with water pump vane, the flow sensor, temperature sensor and pressure sensor
It is connect respectively with controller signals input terminal, the display, motor are connect respectively with control signal output, the controller
For receiving flow sensor, the signal that temperature sensor and pressure sensor are sent and to be transported on display display defeated simultaneously
Go out to control signal control motor to start or stop.
A kind of control method of above-mentioned water pump temperature-controlled regulating system：
（1）After water pump is inserted into power supply, controller in duration t1 adopt successively by flow sensor and pressure sensor
The signal of collection is received and is shown by display, judges that flow sensor breaks down if flow signal is shown,
Pressure signal is detected if without flow signal, judges that pressure sensor breaks down if no pressure signal at this time,
If there is pressure signal then performs next step；
（2）Start water pump, then water temperature and be sent to controller in temperature sensor acquisition water cavity, controller is by temperature sensor
Water temperature is compared with preset temperature T1 in water cavity, if water temperature is more than preset temperature T1 in water cavity, controller control water pump closes
It closes, if water temperature is less than or equal to preset temperature T1 in water cavity, water pump enters normal mode；
（3）The on/off of controller control water pump realizes regulating water flow；Working condition residing for water pump accordingly adjusts duty
Compare dwell time；Temperature sensor is detected coolant-temperature gage, and the temperature for detecting water outlet is less than or greater than or equal to predetermined temperature
It feeds back on controller, for controller according to the temperature gap of predetermined temperature value and actual temperature, adjust exchange water pump uses shape
The duty ratio dwell time of state reaches designated value until detecting the temperature difference value between leaving water temperature and set temperature, stablizes
Output duty cycle, water pump output are stablized；
（4）After water pump enters normal mode, flow sensor has detected whether flow signal, if there is flow signal continues just
Norm formula, detects pressure signal if without flow signal, if not detecting pressure signal, judges that water pump is in dry
Operating condition simultaneously carries out anti-dry operating rate-determining steps, if a pressure be detected that signal, then recycle perform this step until timing extremely
Preset time t 2；
（5）When not detecting that flow signal still has pressure signal and duration to be more than preset time t 2 in step (4)
When, it switches off the pump and performs Anti-freezing rate-determining steps, then proceed to detection pressure signal, if not detecting pressure signal,
Then start water pump and return to normal mode, if a pressure be detected that signal, is again switched off water pump and performs Anti-freezing rate-determining steps.
Further, step（2）It further includes after water pump closes a period of time, temperature sensor acquires water in water cavity again
Temperature, and by water temperature in water cavity compared with preset temperature T2 in controller, opened when water temperature is less than preset temperature T2 in water cavity
Dynamic water pump enters normal mode.
Further, step（4）Anti- dry operating rate-determining steps are carried out to include：Pressure signal and flow signal are detected, when
Dry operating rate-determining steps are exited when detecting pressure signal and flow signal；When do not detect pressure signal and flow letter
Number when, carry out water pump operation timing, if the water pump operation time is more than preset time t 3, switch off the pump and to dry operating shape
State number is counted, while sets duration threshold according to the dry operating condition of different numbers, is more than threshold when the duration
Start water pump during value and perform dry operating rate-determining steps again.
Further, the dry operating condition count totals be 3, when dry operating condition number be 1 when, setting it is lasting when
Between threshold value be 1 hour, when dry operating condition number be 2 when, the duration threshold set as 2 hours, when do operate shape
When state number is 3, the duration threshold set is 24 hour.
Further, step（4）Anti-freezing rate-determining steps are carried out to include：Water temperature in water cavity is acquired by temperature sensor
And compared with the preset temperature T3 degree in controller, water is closed when water temperature is spent more than or equal to preset temperature T3 in water cavity
It pumps and exits Anti-freezing rate-determining steps；When water temperature is spent less than preset temperature T3 in water cavity, start water pump and pass through display
It shows the working condition of water pump, then detect water temperature in water cavity again and is compared with preset temperature T4 degree in controller,
It switches off the pump when water temperature is spent more than preset temperature T4 in water cavity and exits Anti-freezing rate-determining steps, when water temperature is less than in advance in water cavity
If carrying out timing when temperature T4 is spent, water is again started up when water temperature is spent more than preset temperature T5 in water cavity after t4 seconds at runtime
Pump operation when water temperature is spent less than preset temperature T5 in water cavity after t4 seconds at runtime, shows pump working state and alarms.
Further, the temperature sensor detects leaving water temperature at 5 DEG C or 5 DEG C or more, exchanges the duty ratio of water pump
Dwell time.
The present invention can realize water pump Anti-freezing function, simple in structure, practicability is good, production and use cost are low, and profit
With adjusting power-up period and stop duty cycle time, realizing extension exchange electric pump service life and facilitating regulating water flow, solve
Variable-frequency motor Shortcomings, so as to save maintenance cost.
The above described is only a preferred embodiment of the present invention, not make limitation in any form to the present invention, though
So the present invention is disclosed above with preferred embodiment, however is not limited to the present invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, technical spirit according to the present invention
To any simple modification, equivalent change and modification that above example is made, in the range of still falling within technical solution of the present invention.
Claims (7)
1. a kind of water pump temperature-controlled regulating system, it is characterised in that：Including flow sensor, temperature sensor, pressure sensor, show
Show device and controller, the flow sensor is arranged on pump intake, and the temperature sensor and pressure sensor are set
Put in the water cavity bottom of water pump, the motor shaft of the motor is connect with water pump vane, the flow sensor, temperature sensor with
And pressure sensor is connect respectively with controller signals input terminal, the display, motor connect respectively with control signal output
It connects, the controller is used to receive flow sensor, the signal that temperature sensor and pressure sensor are sent and is transported to display
Display exports control signal control motor and starts or stop simultaneously on device.
2. a kind of control method of water pump temperature-controlled regulating system according to claim 1, it is characterised in that：
（1）After water pump is inserted into power supply, controller in duration t1 adopt successively by flow sensor and pressure sensor
The signal of collection is received and is shown by display, judges that flow sensor breaks down if flow signal is shown,
Pressure signal is detected if without flow signal, judges that pressure sensor breaks down if no pressure signal at this time,
If there is pressure signal then performs next step；
（2）Start water pump, then water temperature and be sent to controller in temperature sensor acquisition water cavity, controller is by temperature sensor
Water temperature is compared with preset temperature T1 in water cavity, if water temperature is more than preset temperature T1 in water cavity, controller control water pump closes
It closes, if water temperature is less than or equal to preset temperature T1 in water cavity, water pump enters normal mode；
（3）The on/off of controller control water pump realizes regulating water flow；Working condition residing for water pump accordingly adjusts duty
Compare dwell time；Temperature sensor is detected coolant-temperature gage, and the temperature for detecting water outlet is less than or greater than or equal to predetermined temperature
It feeds back on controller, for controller according to the temperature gap of predetermined temperature value and actual temperature, adjust exchange water pump uses shape
The duty ratio dwell time of state reaches designated value until detecting the temperature difference value between leaving water temperature and set temperature, stablizes
Output duty cycle, water pump output are stablized；
（4）After water pump enters normal mode, flow sensor has detected whether flow signal, if there is flow signal continues just
Norm formula, detects pressure signal if without flow signal, if not detecting pressure signal, judges that water pump is in dry
Operating condition simultaneously carries out anti-dry operating rate-determining steps, if a pressure be detected that signal, then recycle perform this step until timing extremely
Preset time t 2；
（5）When not detecting that flow signal still has pressure signal and duration to be more than preset time t 2 in step (4)
When, it switches off the pump and performs Anti-freezing rate-determining steps, then proceed to detection pressure signal, if not detecting pressure signal,
Then start water pump and return to normal mode, if a pressure be detected that signal, is again switched off water pump and performs Anti-freezing rate-determining steps.
3. a kind of control method of water pump temperature-controlled regulating system according to claim 2, it is characterised in that：Step（2）Also
Including working as after water pump closes a period of time, temperature sensor acquires water temperature in water cavity again, and by water temperature in water cavity and controller
Middle preset temperature T2 compares, and starting water pump when water temperature is less than preset temperature T2 in water cavity enters normal mode.
4. a kind of control method of water pump temperature-controlled regulating system according to claim 2, it is characterised in that：Step（4）Into
The anti-dry operating rate-determining steps of row include：Pressure signal and flow signal are detected, when detecting pressure signal and flow signal
When exit dry operating rate-determining steps；When not detecting pressure signal and flow signal, water pump operation timing is carried out, if
The water pump operation time is more than preset time t 3, then switches off the pump and dry operating condition number is counted, while according to difference
The dry operating condition setting duration threshold of number starts water pump when the duration is more than threshold value and performs dry operating control again
Step processed.
5. a kind of control method of water pump temperature-controlled regulating system according to claim 4, it is characterised in that：The dry operating
Count of Status sum is 3, and when dry operating condition number is 1, the duration threshold set is 1 hour, when dry operating condition
Number be 2 when, the duration threshold set as 2 hours, when dry operating condition number be 3 when, setting it is lasting when
Between threshold value be 24 hours.
6. a kind of control method of water pump temperature-controlled regulating system according to claim 2 or 4, it is characterised in that：Step
（4）Anti-freezing rate-determining steps are carried out to include：By temperature sensor acquire water cavity in water temperature and with the preset temperature in controller
T3 degree compares, and switches off the pump when water temperature is spent more than or equal to preset temperature T3 in water cavity and exits Anti-freezing rate-determining steps；
When water temperature is spent less than preset temperature T3 in water cavity, start water pump and the working condition of water pump is shown by display, then
Water temperature in water cavity is detected again and is compared with preset temperature T4 degree in controller, when water temperature is more than preset temperature in water cavity
It switches off the pump when T4 is spent and exits Anti-freezing rate-determining steps, timing is carried out when water temperature is spent less than preset temperature T4 in water cavity,
Water pump operation is again started up when water temperature is spent more than preset temperature T5 in water cavity after run time t4 seconds, t4 seconds at runtime
When water temperature is spent less than preset temperature T5 in water cavity afterwards, show pump working state and alarm.
7. a kind of control method of water pump temperature-controlled regulating system according to claim 2, it is characterised in that：The temperature passes
Sensor detects leaving water temperature at 5 DEG C or 5 DEG C or more, exchanges the duty ratio dwell time of water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711457562.9A CN108131303A (en) | 2017-12-28 | 2017-12-28 | A kind of water pump temperature-controlled regulating system and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711457562.9A CN108131303A (en) | 2017-12-28 | 2017-12-28 | A kind of water pump temperature-controlled regulating system and control method |
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| CN108131303A true CN108131303A (en) | 2018-06-08 |
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| CN201711457562.9A Pending CN108131303A (en) | 2017-12-28 | 2017-12-28 | A kind of water pump temperature-controlled regulating system and control method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763969A (en) * | 2019-01-30 | 2019-05-17 | 江门市华工机电有限公司 | A kind of control method for water pump anti-frost protection |
| CN110397604A (en) * | 2019-08-09 | 2019-11-01 | 浙江绿美泵业有限公司 | A kind of canned motor pump |
| CN110617204A (en) * | 2019-10-21 | 2019-12-27 | 杭州卓翁科技有限公司 | Intelligent control method for water pump |
| CN112963336A (en) * | 2021-03-26 | 2021-06-15 | 利欧集团浙江泵业有限公司 | Control method of water pump |
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| CN106224258A (en) * | 2016-09-30 | 2016-12-14 | 克奥兹泵业（深圳）有限公司 | Automatic speed regulation energy-saving centrifugal water pump |
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| CN206320048U (en) * | 2016-12-23 | 2017-07-11 | 克奥兹泵业（深圳）有限公司 | Intelligent control type water pump |
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| JPS6275096A (en) * | 1985-09-27 | 1987-04-06 | Hitachi Ltd | Preventive device for freezing damage of pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763969A (en) * | 2019-01-30 | 2019-05-17 | 江门市华工机电有限公司 | A kind of control method for water pump anti-frost protection |
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| CN112963336A (en) * | 2021-03-26 | 2021-06-15 | 利欧集团浙江泵业有限公司 | Control method of water pump |
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Application publication date: 20180608 |