CN106438394B - Water pump total head operation control method and controller, water pump - Google Patents
Water pump total head operation control method and controller, water pump Download PDFInfo
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- CN106438394B CN106438394B CN201610611551.0A CN201610611551A CN106438394B CN 106438394 B CN106438394 B CN 106438394B CN 201610611551 A CN201610611551 A CN 201610611551A CN 106438394 B CN106438394 B CN 106438394B
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- water pump
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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
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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
- F04D15/0077—Safety measures
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The invention provides a kind of water pump total head operation control method, the operating pressure of water pump is detected using pressure sensor, the stopping pressure of water pump is calculated automatically by controller, to control the start and stop of water pump；The total head job control to water pump is realized, reduces the stop frequency of water pump, provides the user stable water supply pressure；Simultaneously, there is provided a kind of water pump water shortage detection method and a kind of water system leakage detection method;The present invention can additionally provide a kind of controller, have the function using the control water pump start and stop of water pump total head operation control method；And a kind of water pump, for the water pump controlled using water pump whole process operation control method, there are low stop frequency, simple in construction, pressure of supply water stabilization and low cost and other advantages.
Description
Technical field
The present invention relates to water pump technology, more particularly, to the control technology field of water pump, is specifically related to a kind of water
Pump total head operation control method and controller, water pump.
Background technology
With people's living standard and the raising required automation, the Automated condtrol of water pump is more and more common, solution
The step of water pump of having determined needs to go start and stop manually in use, improves efficiency；Especially in civilian and agricultural use confession
Water system, it is increasing to the demand of the water pump of Automated condtrol.
It is broadly divided into the several types such as self priming pump, jet pump, immersible pump in civilian and agricultural use water pump；At present,
To improve the automaticity of water pump, detected using sensor technology come the pressure signal to water pump and water-flow signal, and
Intelligent control is carried out by start and stop of the controller to water pump, to reach the automatic start-stop of water pump.
At present, it is common to use be flow switch senser and Pressure Switch Sensor, this kind of sensor output is out
Signal is measured in pass, and controller then enters according to the pressure switch amount signal and/or water flow switch amount signal, the start and stop to water pump that are received
Row control；But because of this kind of sensor, structural factor itself influences, and causes accuracy of detection relatively low, for example flow switch senser is to small
The water-flow signal that flow supplies water can not detect that the accuracy of detection of most of flow switch sensers is in 50ml/s water flow velocities
Degree, even if accuracy of detection it is higher also can only achieve 10ml/s water velocities, accordingly, there exist the blind area of control, or cause water pump
Frequent start-stop, cause the reduction of water pump service life；To obtain preferably control water pump, Pressure Switch Sensor and stream are generally required
Amount switch sensor uses simultaneously, therefore, higher requirement is also proposed to water pump structure so that water pump structure becomes relatively multiple
It is miscellaneous, improve production cost.
In addition, also having using pressure sensor, such sensor can be detected in real time to the pressure of water pump, and be exported
Pressure mould analog quantity signal or data signal to controller, controller are controlled according to start and stop of the pressure signal received to water pump
System；At present, the water pump being controlled using this method needs to set to starting pressure and stopping pressure after electricity on water pump,
Water pump is by the startup pressure according to setting and stops pressure progress automatic start-stop control；However, due to the Incoercibility of water, from
Stop pressure and drop to that to start pressure time extremely short, even if water pump is configured with pressure surge tank, also can only limitedly extend from stopping
Only pressure drops to the time for starting pressure；Therefore, in use, water pump frequent start-stop is inevitably resulted in, is fed water
The service life of pump, which is brought, to be had a strong impact on.
To solve the frequent start-stop of water pump, it should be tried one's best when with water and keep pump operation；At present, part producer then uses
Flow switch senser and pressure sensor are used simultaneously, its control method is that the startup pressure to water pump and stopping in advance being pressed
Power is set, and when flow switch senser detects water-flow signal, water pump keeps continuous running, when water-flow signal disconnects
When, water pump is controlled start-up and shut-down control according to pressure and stopping pressure being started；This method with using Pressure Switch Sensor simultaneously
It is identical with the Method And Principle of flow switch senser, to reduce the essence that the key of the stop frequency of water pump is flow switch senser
Degree, when the undetectable water velocity of flow switch senser supplies water, water pump also inevitable frequent start-stop；Simultaneously because pressure
Force snesor is higher relative to the cost of Pressure Switch Sensor, improves the production cost of water pump.
Further, since civilian and agricultural water pump cost limitation, the at present survey of the pressure sensor selected by water pump producer
Accuracy of measurement is relatively low, and measuring basis fluctuation problem be present, during water pump use, detected by build-up of pressure sensor
The actual pressure of supply water of pressure and water pump is inconsistent, and the pressure of supply water control of feed pump brings influence.
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of water pump total head operation control method, passed using pressure
Sensor detects the operating pressure of water pump, the stopping pressure of water pump is calculated automatically by controller, to control the start and stop of water pump；Realize
To the total head job control of water pump, reduce the measurement accuracy influence of the stop frequency, not compression force snesor of water pump, be
User provides stable water supply pressure；Simultaneously, there is provided a kind of water pump water shortage detection method and a kind of water system leak water detdction side
Method.
It is a further object of the present invention to provide a kind of controller, has using water pump total head operation control method control water
The function of pump start and stop.
It is another object of the present invention to be to provide a kind of water pump, for the water controlled using water pump whole process operation control method
Pump, there are low stop frequency, simple in construction, pressure of supply water stabilization and low cost and other advantages.
The technical solution adopted in the present invention is：
A kind of water pump total head operation control method, including controller, for connecting external power source and controlling opening for water pump
Stop；Pressure sensor, for detecting the pressure of water pump, and output pressure signal is to controller；Comprise the following steps,
S101, start water pump, read the operating pressure P of water pumpx；
S102, treat the operating pressure P of water pumpxRise to a pressure value and continue no longer to rise for T seconds, then described in record
Pressure value is P, and stops water pump；The T is 1-180；
S103, when water-aspirator pressure drops to PyWhen, start water pump, wherein Py≤ P- Δs P, the Δ P ＞ 0；
S104, as water pump operation pressure Px≤P-Pz, keep pump operation；As water pump operation pressure Px＞ P-Pz, then switch
To step S102；Wherein, Δ P ＞ Pz＞ 0.
Further, the PyTo preset.
Further, the step S103, when water-aspirator pressure drops to PyWhen, the delay t seconds start water pump, wherein Py≤P-
Δ P, the Δ P ＞ 0, the 1 ＞ t ＞ 0.
Further, as water pump continuous running M minutes, the Px≤P2, then water pump is stopped, and export signal of water shortage；Its
In, P2For the normal water supply pressure less than water pump in delivery port standard-sized sheet, the M is 0.1-15.
Preferably, the step S101, start water pump when upper electric every time, read the operating pressure P of water pumpx。
Preferably, the step S101, the N seconds that are delayed when upper electric every time start water pump, read the operating pressure P of water pumpx, its
Middle N is 1-10.
Preferably, including step, when water pump dwell time is small more than Q, restart to perform step S101.
Further, the pressure after record water pump stops each time maintaining P0Time, be designated as holding time, wherein,
0.9P≤P0≤1.1P；It is interior when continuous E is small, it is described to hold time the respectively less than F seconds, then water leakage is exported, the F is 1-
60。
A kind of controller, the controller is including the use of the water pump total head operation control method control described in any of the above-described
The control board of water pump processed；The control board includes,
Single-chip microcomputer, for storing data and performing software program, reception pressure signal and output signal；
Relay, it is connected for controlling the power on/off of water pump, and with drive module；
Drive module, it is connected with single-chip microcomputer, is switched for control relay；
Display screen, it is connected with single-chip microcomputer, for showing pressure, failure code；
Circuit module, powered for single-chip microcomputer and relay.
A kind of water pump, the water pump are the water controlled using the water pump total head operation control method described in any of the above-described
Pump, including controller, pressure sensor and check-valves；Wherein, the pressure sensor is used for the outlet pressure for detecting water pump, and
Output pressure signal is to controller；The controller is used to connect external power source, and controls the start and stop of water pump；The check-valves is set
Put in the upstream of the pressure sensor.
The beneficial effects of the invention are as follows：
Above-mentioned water pump total head operation control method, the operating pressure of water pump is detected using pressure sensor, passes through control
Device calculates the stopping pressure of water pump automatically, to control the start and stop of water pump, realizes the total head job control to water pump, reduces water
The stop frequency of pump；In addition, if pressure sensor Ref changes or water system changes, controller can automatic sensing
Calculate and adjust the stopping pressure of water pump, to control the start and stop of water pump, the not measurement accuracy of compression force snesor and water supply
System, which changes, to be influenceed, and provides the user stable water supply pressure all the time.
Meanwhile water pump water shortage detection method provided by the present invention, it can effectively prevent water pump from, because water shortage dallies for a long time, entering
And the service life of water pump is influenceed, further avoid causing the waste of electric energy.
In addition, water system leakage detection method provided by the present invention, the intelligence degree of water pump is further increased,
Allow user to know that water system has leak, and leakage point can be eliminated as early as possible according to water leakage, avoid because of leak band
The loss come.
The present invention also provides a kind of controller, has the work(using the control water pump start and stop of water pump total head operation control method
Energy.
A kind of water pump provided by the present invention, for the water pump controlled using water pump whole process operation control method, there are start and stop
Frequency is low, simple in construction, pressure of supply water stablizes and low cost and other advantages.
Brief description of the drawings
Fig. 1 is a kind of structural representation of water pump of the embodiment of the present invention 1；
Fig. 2 is a kind of water pump control modules connection diagram of the embodiment of the present invention 1；
Fig. 3 is a kind of schematic flow sheet of water pump total head operation control method of the embodiment of the present invention 2；
Fig. 4 is a kind of control logic schematic diagram of water pump total head operation control method of the embodiment of the present invention 2；
Fig. 5 is a kind of flow signal of water pump total head operation control method with leak water detdction of the embodiment of the present invention 2
Figure；
Fig. 6 is the control logic schematic diagram of another water pump total head operation control method of the embodiment of the present invention 2；
Fig. 7 is a kind of each functional module connection diagram of controller of the embodiment of the present invention 3.
Embodiment
Embodiment 1
A kind of water pump with reference to shown in Fig. 1 and Fig. 2, including the pump housing 5, water inlet 6, delivery port 4, pedestal 7, controller 1, pressure
Force snesor 2 and check-valves 3；Wherein, the water inlet 6 is the low-pressure end of water pump, and the delivery port 4 is the high pressure of water pump
End, delivery port 4 and water inlet 6 are connected with the pump housing；The pressure sensor 2 is used for the outlet pressure for detecting water pump, and exports pressure
Force signal is to controller 1；The controller 1 is used to connect external power source, and controls the start and stop of water pump；The check-valves 3 is set
At delivery port 4 and positioned at the upstream of pressure sensor 2.
Embodiment 2
As shown in Figure 3 and Figure 4, the water pump total head operation control method described in above-described embodiment 1, comprises the following steps,
S101, start water pump, read the operating pressure P of water pumpx；
S102, treat the operating pressure P of water pumpxRise to a pressure value and continue no longer to rise for T seconds, then described in record
Pressure value is P, and stops water pump；The T is 1-180；
S103, when water-aspirator pressure drops to PyWhen, start water pump, wherein Py≤ P- Δs P, the Δ P ＞ 0；
S104, as water pump operation pressure Px≤P-Pz, keep pump operation；As water pump operation pressure Px＞ P-Pz, then switch
To step S102, wherein Δ P ＞ Pz＞ 0.
Further, the PyTo preset；Can be when water pump dispatches from the factory by factory settings, or by user according to water supply
Demand is set when using water pump.
Further, the step S103, when water-aspirator pressure drops to PyWhen, the delay t seconds start water pump, wherein Py≤
P- Δs P, the Δ P ＞ 0, the 1 ＞ t ＞ 0；The delay t seconds start water pump, can avoid because water consumption it is larger when, pressure
Decrease speed is too fast, causes the water pump power on/off time too short and pump motor is had undesirable effect.
Preferably, the step S101, start water pump when upper electric every time, read the operating pressure P of water pumpx。
Preferably, the step S101, the N seconds that are delayed when upper electric every time start water pump, read the operating pressure P of water pumpx, its
Middle N is 1-10.
Further, with reference to shown in Fig. 5, above-mentioned water pump total head operation control method, in addition to step S105, record water
Pressure after pump stops each time maintains P0Time, be designated as holding time, wherein, 0.9P≤P0≤1.1P；When continuous E is small
It is interior, it is described to hold time the respectively less than F seconds, then water leakage is exported, the F is 1-60.
Specific example：The specific control flow of another water pump total head operation control method with reference to shown in Fig. 6 is patrolled
The relation of collecting is A）Water pump is delayed 3 seconds after the power-up starts operating；
B-1）If water pump continuous running 1 minute, pressure sensor detects that the pressure of water pump is less than 0.5bar, then by controlling
Device control water pump shuts down, and exports water pump signal of water shortage；B-2）If water pump detects that pressure rises and to a pressure value P
（P≥0.5bar）, and continue no longer to rise for 5 seconds, then P is recorded, and stop pump operation, while monitor pressure and decline situation；
C-1）If pressure, which declines, is more than or equal to 1bar, starts water pump and monitor pressure；D-1）If water pump continuous running 1
Minute, pressure sensor detects that the pressure of water pump is less than 0.5bar, then is shut down by controller control water pump, and export water
Pump signal of water shortage；D-2）If pressure rise, compare water pump current pressure with（P-0.2bar）Size, E-1）Current pressure is small
In（P-0.2bar）Then maintain pump operation, E-2）Current pressure is more than or equal to（P-0.2bar）Shi Ze re-executes above-mentioned B-
2 steps；C-2）Water pump is maintained to stop if pressure is dropped by less than 1bar；If water pump maintained to stop more than 72 hours, start water
Pump, and re-execute above-mentioned B-2 steps.
Water can be realized by above-mentioned water pump total head operation control method by being typically arranged with the civil water pump of pressure sensor
The total head job control of pump, including home-use water pump, agricultural water pump etc.；It is especially suitable for configured pressure sensor inspection
Survey the not high water pump of precision, for example the accuracy of detection of pressure sensor can also realize total head work to water pump in 0.1bar
Control, or even when pressure sensor detection benchmark produces deviation, to using above-mentioned water pump total head operation control method
Water pump does not also have an impact.
General principle is：When pump operation, as long as delivery port aperture is constant, water-aspirator pressure will keep dynamic equilibrium, this
When can read a pressure value；When delivery port is closed, water-aspirator pressure will raise, and be finally reached a pressure value and protect
Dynamic equilibrium is held, the pressure value now read is then the closing lift of water pump（That is highest operating pressure）；If during pump operation
Pressure then illustrates that delivery port has aperture less than closing lift, further illustrates that user needs to keep continuous running with water, water pump
To maintain normal water supply pressure；After being stopped with water, water-aspirator pressure will rise to closing lift, and the termination of pumping that is delayed；Realize use
Water pump automatic start during water, it is automatically stopped without water pump during water, and water pump infrequently start and stop in water utilizing process, to different type
Water pump all adapt to, improve the automaticity of water pump.
Embodiment 3
A kind of controller with reference to shown in Fig. 7, for any one water pump total head work control described in embodiment 2 can be realized
The control board that method processed is controlled to water pump；The control board includes,
Single-chip microcomputer 11, for storing data and performing software program, reception pressure signal and output signal；
Relay 31, it is connected for controlling the power on/off of water pump, and with drive module 21；
Drive module 21, it is connected with single-chip microcomputer 11, is switched for control relay 31；
Display screen 41, it is connected with single-chip microcomputer 11, for showing pressure, failure code；
Circuit module 51, powered for single-chip microcomputer 11 and relay 31.
Controller noted above can coordinate pressure sensor to be arranged on the outlet conduit of water pump to be controlled, can also be arranged on
Equipped with the pedestal or shell of the water pump of pressure sensor, the carry out total head job control to water pump, improve water pump from
Dynamicization and intelligence degree, it is convenient to be provided for user with water.
Claims (1)
1. a kind of water pump total head operation control method, including controller, for connecting external power source and controlling the start and stop of water pump；
Pressure sensor, for detecting the pressure of water pump, and output pressure signal is to controller；Comprise the following steps,
S101, start water pump, read the operating pressure P of water pumpx；
S102, treat the operating pressure P of water pumpxRise to a pressure value and continue no longer to rise for T seconds, then record the pressure
It is worth for P, and stops water pump；The T is 1-180；
S103, when water-aspirator pressure drops to PyWhen, start water pump, wherein Py≤P- Δs P, the Δ P ＞ 0；
S104, as water pump operation pressure Px≤P-Pz, keep pump operation；As water pump operation pressure Px＞ P-Pz, then step is switched to
Rapid S102；Wherein, Δ P ＞ Pz＞ 0；
It is characterized in that：Also include step, the pressure after record water pump stops each time maintaining P0Time, be designated as maintain when
Between, wherein, 0.9P≤P0≤1.1P；It is interior when continuous E is small, it is described to hold time the respectively less than F seconds, then water leakage is exported, institute
It is 1-60 to state F.
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| CN201610611551.0A CN106438394B (en) | 2016-07-30 | 2016-07-30 | Water pump total head operation control method and controller, water pump |
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| CN201610611551.0A CN106438394B (en) | 2016-07-30 | 2016-07-30 | Water pump total head operation control method and controller, water pump |
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| CN106438394B true CN106438394B (en) | 2018-02-09 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107687418B (en) * | 2017-08-28 | 2019-03-01 | 宁波德业变频技术股份有限公司 | A kind of novel water shortage determination method for no flow sensor constant pressure water supply system |
| CN108661896A (en) * | 2018-03-02 | 2018-10-16 | 安徽达来电机有限公司 | Water pump total head operation control method and controller, water pump |
| CN112095714B (en) * | 2020-08-17 | 2021-11-05 | 浙江达峰科技有限公司 | Method for judging pressure water shortage of water column with pipeline of constant-pressure water supply system |
| CN112324645B (en) * | 2020-10-16 | 2022-12-02 | 宁波君禾智能科技有限公司 | Control method of water pump |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0733839B2 (en) * | 1984-07-16 | 1995-04-12 | 株式会社日立製作所 | Water supply |
| JPH0631619B2 (en) * | 1984-07-27 | 1994-04-27 | 株式会社荏原製作所 | Variable speed water supply device |
| CN101270755B (en) * | 2008-05-11 | 2014-05-21 | 姚福来 | Timing and switching method for controlling water pump fan parallel-connection energy-saving operation |
| CN102162683A (en) * | 2011-03-29 | 2011-08-24 | 海尔集团公司 | Water shortage protection device of water circulation system |
| CN105484992A (en) * | 2016-01-08 | 2016-04-13 | 苏州友元微电子科技有限公司 | Intelligent man-machine interaction water pump control system |
| CN205349679U (en) * | 2016-01-21 | 2016-06-29 | 浙江大元泵业股份有限公司 | Water pump automatic control device |
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