CN106438394A - Water pump total-lift work control method, controller and water pump - Google Patents
Water pump total-lift work control method, controller and water pump Download PDFInfo
- Publication number
- CN106438394A CN106438394A CN201610611551.0A CN201610611551A CN106438394A CN 106438394 A CN106438394 A CN 106438394A CN 201610611551 A CN201610611551 A CN 201610611551A CN 106438394 A CN106438394 A CN 106438394A
- Authority
- CN
- China
- Prior art keywords
- water pump
- pressure
- water
- control method
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0077—Safety measures
Abstract
The invention provides a water pump total-lift work control method. A pressure sensor is used for detecting the running pressure of a water pump, a controller is used for automatically calculating the stop pressure of the water pump, and starting and stopping of the water pump are controlled. The total-lift work control over the water pump is achieved, the starting and stopping frequency of the water pump is reduced, and the stable water supply pressure is provided for a user. Meanwhile, a water pump water shortage detection method and a water supply system water leakage detection method are provided. The invention further provides the controller and the water pump controlled by the water pump total-lift work control method; the controller has the function of controlling the starting and stopping of the water pump through the water pump total-lift work control method; and the water pump has the beneficial effects that the starting and stopping frequency is low, the structure is simple, the water supply pressure is stable, and cost is low.
Description
Technical field
The present invention relates to pump technology field, especially relate to the control technology field of water pump, be specifically related to a kind of water
Pump total head operation control method and controller, water pump.
Background technology
The raising with people's living standard and automatization being required, the Automated condtrol of water pump is more and more universal, solution
Water pump of having determined needs the step going start and stop manually in use, improves efficiency；Especially in civilian and agricultural use confession
Water system, increasing to the demand of the water pump of Automated condtrol.
It is broadly divided into the several types such as self priming pump, ejector pump, immersible pump in civilian and agricultural use water pump；At present,
For improving the automaticity of water pump, using sensor technology, the pressure signal of water pump and water-flow signal are detected, and
Based Intelligent Control is carried out to the start and stop of water pump by controller, to reach the automatic start-stop of water pump.
At present, it is common to use be flow switch senser and Pressure Switch Sensor, being out of this kind of sensor output
Signal is measured in pass, and controller then according to the pressure switch amount signal being received and/or water flow switch amount signal, enter by the start and stop to water pump
Row controls；But because of the impact of this kind of sensor structural agent itself, lead to accuracy of detection relatively low, such as flow switch senser is to little
The water-flow signal that flow supplies water cannot detect, and the accuracy of detection of most of flow switch sensers is in 50ml/s water flow velocity
Degree, though accuracy of detection higher also can only achieve 10ml/s water velocity, accordingly, there exist the blind area of control, or cause water pump
Frequent start-stop, causes water pump service life to reduce；Preferably control water pump for obtaining, generally require Pressure Switch Sensor and stream
Amount switch sensor uses simultaneously, therefore, also proposes higher requirement to water pump structure so that water pump structure becomes relatively multiple
Miscellaneous, improve production cost.
In addition, also using pressure transducer, such sensor can carry out real-time detection to the pressure of water pump, and exports
, to controller, controller is controlled to the start and stop of water pump according to the pressure signal receiving for pressure mould analog quantity signal or digital signal
System；At present, need after electricity on water pump, startup pressure and stopping pressure being set using the water pump that the method is controlled,
Water pump will carry out automatic start-stop control according to the startup pressure setting and stopping pressure；However, due to the Incoercibility of water, from
Stop pressure drop extremely short to starting pressure time, even if water pump is configured with pressure surge tank, also can only limitedly extend from stopping
Only pressure drop is to the time starting pressure；Therefore, in use, inevitably result in water pump frequent start-stop, feedwater
The service life of pump is brought and is had a strong impact on.
For solving the frequent start-stop of water pump, pump operation should be kept when with water as far as possible；At present, part producer is had then to adopt
Simultaneously using flow switch senser and pressure transducer, 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 on off control according to starting pressure with stopping pressure；The method with simultaneously using Pressure Switch Sensor
Identical with the Method And Principle of flow switch senser, the key of the stop frequency for reducing water pump is the essence of flow switch senser
Degree, when the water velocity that flow switch senser cannot detect supplies water, water pump also inevitable frequent start-stop；Simultaneously because pressure
Force transducer is relatively costly with respect to Pressure Switch Sensor, improves the production cost of water pump.
Further, since civilian and agricultural water pump cost limits, the survey of the pressure transducer selected by current water pump producer
Accuracy of measurement is relatively low, and there is measuring basiss fluctuation problem, during water pump uses, detected by build-up of pressure sensor
Pressure is inconsistent with the actual pressure of supply water of water pump, and the pressure of supply water control of feed pump brings impact.
Content of the invention
For the deficiencies in 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, automatically calculates the stopping pressure of water pump by controller, to control the start and stop of water pump；Realize
Total head job control to water pump, decreases the stop frequency of water pump, the certainty of measurement impact of not pressurized force transducer, is
User provides stable water supply pressure；Simultaneously, there is provided a kind of water pump hydropenia 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, have and control water using water pump total head operation control method
The function of pump start and stop.
It is another object of the present invention to being to provide a kind of water pump, it is the water being controlled using water pump whole process operation control method
Pump, has that stop frequency is low, structure is simple, pressure of supply water is stable 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 the start and stop connecting external power source and control water pump；Pressure
Force transducer, for detect water pump pressure, and output pressure signal is to controller；Comprise the following steps,
S101, starts water pump, reads the operating pressure P of water pumpx；
S102, treats the operating pressure P of water pumpxRise to a pressure value and continue no longer to rise for T second, then record described pressure
It is worth for P, and stop water pump；Described T is 1-180；
S103, when water-aspirator pressure drops to PyWhen, start water pump, wherein Py≤ P- Δ P, described 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
Rapid S102；Wherein, Δ P ＞ Pz＞ 0.
Further, described PyFor presetting.
Further, described step S103, when water-aspirator pressure drops to PyWhen, the time delay t second starts water pump, wherein Py≤P-
Δ P, described Δ P ＞ 0, described 1 ＞ t ＞ 0.
Further, as water pump continuous running M minute, described Px≤P2, then stop water pump, and export signal of water shortage；Its
In, P2It is the normal water supply pressure less than water pump in outlet standard-sized sheet, described M is 0.1-15.
Preferably, described step S101, goes up startup water pump during electricity every time, reads the operating pressure P of water pumpx.
Preferably, described step S101, when going up electricity every time, the time delay N second starts water pump, reads the operating pressure P of water pumpx, its
Middle N is 1-10.
Preferably, including step, when water pump dwell time is more than Q hour, restart execution 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；When in continuous E hour, described hold time the respectively less than F second, then export water leakage, described F is 1-
60.
A kind of controller, described controller is included using the water pump total head operation control method control described in any of the above-described
The control board of controlling the water circulation pump；Described control board includes,
Single-chip microcomputer, for storing data and execution software program, receiving pressure signal output signal；
Relay, for controlling the power on/off of water pump, and is connected with drive module；
Drive module, is connected with single-chip microcomputer, for control relay switch；
Display screen, is connected with single-chip microcomputer, for showing pressure, failure code；
Circuit module, powers for single-chip microcomputer and relay.
A kind of water pump, described water pump is the water being controlled using the water pump total head operation control method described in any of the above-described
Pump, including controller, pressure transducer and check-valves；Wherein, described pressure transducer is used for detecting the outlet pressure of water pump, and
Output pressure signal is to controller；Described controller is used for connecting external power source, and controls the start and stop of water pump；Described check-valves set
Put the upstream in described pressure transducer.
The invention has the beneficial effects as follows：
Above-mentioned water pump total head operation control method, detects the operating pressure of water pump using pressure transducer, by controller certainly
The dynamic stopping pressure calculating water pump, to control the start and stop of water pump, realizes the total head job control to water pump, decreases water pump
Stop frequency；If additionally, 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 certainty of measurement of not pressurized force transducer and water system
Change impact, provide the user stable water supply pressure all the time.
Meanwhile, water pump hydropenia detection method provided by the present invention, can effectively prevent water pump from dallying for a long time because of hydropenia, enter
And affect the service life of water pump, avoid further causing the waste of electric energy.
Additionally, water system leakage detection method provided by the present invention, further increase the intelligence degree of water pump,
Allow user can know that water system has leak, and leakage point can be eliminated as early as possible according to water leakage, it is to avoid because of leak band
The loss coming.
The present invention also provides a kind of controller, has the work(controlling water pump start and stop using water pump total head operation control method
Energy.
A kind of water pump provided by the present invention, is the water pump being controlled using water pump whole process operation control method, has start and stop
Frequency is low, structure is simple, pressure of supply water is stable and low cost and other advantages.
Brief description
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 schematic flow sheet of water pump total head operation control method with leak water detdction of the embodiment of the present invention 2；
Fig. 6 is the control logic schematic diagram of another kind of 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.
Specific embodiment
Embodiment 1
In conjunction with a kind of water pump shown in Fig. 1 and Fig. 2, pass including the pump housing 5, water inlet 6, outlet 4, pedestal 7, controller 1, pressure
Sensor 2 and check-valves 3；Wherein, described water inlet 6 is the low-pressure end of water pump, and described outlet 4 is the high pressure end of water pump,
Outlet 4 and water inlet 6 are all connected with the pump housing；Described pressure transducer 2 is used for detecting the outlet pressure of water pump, and output pressure letter
Number to controller 1；Described controller 1 is used for connecting external power source, and controls the start and stop of water pump；Described check-valves 3 are arranged on out
At the mouth of a river 4 and be located at pressure transducer 2 upstream.
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, starts water pump, reads the operating pressure P of water pumpx；
S102, treats the operating pressure P of water pumpxRise to a pressure value and continue no longer to rise for T second, then record described pressure
It is worth for P, and stop water pump；Described T is 1-180；
S103, when water-aspirator pressure drops to PyWhen, start water pump, wherein Py≤ P- Δ P, described 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
Rapid S102, wherein Δ P ＞ Pz＞ 0.
Further, described PyFor presetting；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, described step S103, when water-aspirator pressure drops to PyWhen, the time delay t second starts water pump, wherein Py≤
P- Δ P, described Δ P ＞ 0, described 1 ＞ t ＞ 0；The described time delay t second starts water pump, can avoid because water consumption larger when, pressure
Decrease speed is too fast, leads to the water pump power on/off time too short and pump motor is had undesirable effect.
Preferably, described step S101, goes up startup water pump during electricity every time, reads the operating pressure P of water pumpx.
Preferably, described step S101, when going up electricity every time, the time delay N second starts water pump, reads the operating pressure P of water pumpx, its
Middle N is 1-10.
Further, in conjunction with shown in Fig. 5, above-mentioned water pump total head operation control method, also include 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 hour
Interior, described hold time the respectively less than F second, then export water leakage, described F be 1-60.
Specific example：The patrolling of concrete control flow in conjunction with another kind of water pump total head operation control method shown in Fig. 6
Volume relation is, A）Time delay starts operating in 3 seconds to water pump after the power-up；
B-1）If water pump continuous running 1 minute, the pressure that pressure transducer detects water pump is less than 0.5bar, then by controller control
Controlling the water circulation pump shuts down, and exports water pump signal of water shortage；B-2）If water pump detects pressure rising and to a pressure value P（P≥
0.5bar）, and continue no longer to rise for 5 seconds, then record P, and stop pump operation, monitor pressure drop situation simultaneously；
C-1）If pressure drop is more than or equal to 1bar, starts water pump and monitor pressure；D-1）If 1 point of water pump continuous running
Clock, the pressure that pressure transducer detects water pump is less than 0.5bar, then control water pump to shut down by controller, 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 less than
（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
Step；C-2）If pressure drop is less than 1bar, water pump is maintained to stop；If water pump maintains stopping more than 72 hours, start water
Pump, and re-execute above-mentioned B-2 step.
The civil water pump being typically arranged with pressure transducer can realize water by above-mentioned water pump total head operation control method
The total head job control of pump, including home-use water pump, agricultural water pump etc.；It is especially suitable for configured pressure transducer inspection
Survey the not high water pump of precision, the accuracy of detection of such as pressure transducer can also realize the total head work to water pump in 0.1bar
Work controls, or even when pressure transducer detection benchmark produces deviation, to using above-mentioned water pump total head operation control method
Water pump does not produce impact yet.
Ultimate principle is：When pump operation, as long as outlet aperture is constant, water-aspirator pressure will keep dynamic equilibrium, this
When can read a pressure value；When outlet is closed, water-aspirator pressure will raise, and be finally reached a pressure value and protect
Hold dynamic equilibrium, the pressure value now reading is then the closing lift of water pump（I.e. highest operating pressure）；If during pump operation
Pressure is less than closing lift and then illustrates that outlet has aperture, further illustrates user with water, water pump needs to keep continuous running
To maintain normal water supply pressure；After being stopped with water retention, water-aspirator pressure will rise to closing lift, and time delay termination of pumping；Achieve use
Water pump automatic during water, is automatically stopped without water pump during water, and water pump infrequently start and stop in water utilizing process, to dissimilar
Water pump all adapt to, improve the automaticity of water pump.
Embodiment 3
In conjunction with a kind of controller shown in Fig. 7, for any one water pump total head job control side described in embodiment 2 can be realized
The control board that method is controlled to water pump；Described control board includes,
Single-chip microcomputer 11, for storing data and execution software program, receiving pressure signal output signal；
Relay 31, for controlling the power on/off of water pump, and is connected with drive module 21；
Drive module 21, is connected with single-chip microcomputer 11, switchs for control relay 31；
Display screen 41, is connected with single-chip microcomputer 11, for showing pressure, failure code；
Circuit module 51, powers for single-chip microcomputer 11 and relay 31.
Controller noted above can coordinate pressure transducer to be arranged on the outlet conduit of water pump to be controlled it is also possible to be arranged on
On pedestal equipped with the water pump of pressure transducer or shell, total head job control carried out to water pump, improve water pump from
Dynamicization and intelligence degree, it is convenient to provide for user's water.
Claims (10)
1. a kind of water pump total head operation control method, including controller, for the start and stop connecting external power source and control water pump；
Pressure transducer, for detecting the pressure of water pump, and output pressure signal is to controller；It is characterized in that：Comprise the following steps,
S101, starts water pump, reads the operating pressure P of water pumpx；
S102, treats the operating pressure P of water pumpxRise to a pressure value and continue no longer to rise for T second, then record described pressure
It is worth for P, and stop water pump；Described T is 1-180；
S103, when water-aspirator pressure drops to PyWhen, start water pump, wherein Py≤P- Δ P, described 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
Rapid S102；Wherein, Δ P ＞ Pz＞ 0.
2. water pump total head operation control method according to claim 1 it is characterised in that：Described PyFor presetting.
3. water pump total head operation control method according to claim 1 it is characterised in that：Described step S103, works as water
When pump pressure drops to Py, the time delay t second starts water pump, wherein Py≤P- Δ P, described Δ P ＞ 0, described 1 ＞ t ＞ 0.
4. water pump total head operation control method according to claim 1 it is characterised in that：Including step, any moment,
As water pump continuous running M minute, described Px≤P2, then stop water pump, and export signal of water shortage；Wherein, P2It is to go out less than water pump
Normal water supply pressure during the standard-sized sheet of the mouth of a river, described M is 0.1-15.
5. water pump total head operation control method according to claim 1 it is characterised in that：Described step S101, every time
Start water pump during upper electricity, read the operating pressure P of water pumpx.
6. water pump total head operation control method according to claim 1 it is characterised in that：Described step S101, every time
During upper electricity, the time delay N second starts water pump, reads the operating pressure P of water pumpx, wherein N is 1-10.
7. water pump total head operation control method according to claim 1 it is characterised in that：Including step, when water pump stops
Only the time, more than Q hour, restarts execution step S101.
8. water pump total head operation control method according to claim 1 it is characterised in that：Including step, record water pump
Pressure after stopping each time maintains P0Time, be designated as holding time, wherein, 0.9P≤P0≤1.1P；When continuous E hour
Interior, described hold time the respectively less than F second, then export water leakage, described F be 1-60.
9. a kind of controller it is characterised in that：Described controller is included using the water pump described in any one of the claims 1-8
Total head operation control method controls the control board of water pump；Described control board includes,
Single-chip microcomputer, for storing data and execution software program, receiving pressure signal output signal；
Relay, for controlling the power on/off of water pump, and is connected with drive module；
Drive module, is connected with single-chip microcomputer, for control relay switch；
Display screen, is connected with single-chip microcomputer, for showing pressure, failure code；
Circuit module, powers for single-chip microcomputer and relay.
10. a kind of water pump it is characterised in that：Described water pump is entirely to be raised using the water pump described in any one of the claims 1-8
The water pump that journey operation control method controls, including controller, pressure transducer and check-valves；Wherein, described pressure transducer is used
In the outlet pressure of detection water pump, and output pressure signal is to controller；Described controller is used for connecting external power source, and controls
The start and stop of water pump；Described check-valves are arranged on the upstream of described pressure transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610611551.0A CN106438394B (en) | 2016-07-30 | 2016-07-30 | Water pump total head operation control method and controller, water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610611551.0A CN106438394B (en) | 2016-07-30 | 2016-07-30 | Water pump total head operation control method and controller, water pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106438394A true CN106438394A (en) | 2017-02-22 |
| CN106438394B CN106438394B (en) | 2018-02-09 |
Family
ID=58184245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610611551.0A Active CN106438394B (en) | 2016-07-30 | 2016-07-30 | Water pump total head operation control method and controller, water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106438394B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687418A (en) * | 2017-08-28 | 2018-02-13 | 宁波德业变频技术股份有限公司 | It is a kind of new to be used for the water shortage decision method without 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 |
| CN112095714A (en) * | 2020-08-17 | 2020-12-18 | 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 |
| CN112324645A (en) * | 2020-10-16 | 2021-02-05 | 宁波君禾智能科技有限公司 | Control method of water pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6125991A (en) * | 1984-07-16 | 1986-02-05 | Hitachi Ltd | Water supply system |
| JPS6138183A (en) * | 1984-07-27 | 1986-02-24 | Ebara Corp | Variable speed water supply device |
| CN101270755A (en) * | 2008-05-11 | 2008-09-24 | 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 |
-
2016
- 2016-07-30 CN CN201610611551.0A patent/CN106438394B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6125991A (en) * | 1984-07-16 | 1986-02-05 | Hitachi Ltd | Water supply system |
| JPS6138183A (en) * | 1984-07-27 | 1986-02-24 | Ebara Corp | Variable speed water supply device |
| CN101270755A (en) * | 2008-05-11 | 2008-09-24 | 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107687418A (en) * | 2017-08-28 | 2018-02-13 | 宁波德业变频技术股份有限公司 | It is a kind of new to be used for the water shortage decision method without flow sensor constant pressure water supply system |
| 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 |
| CN112095714A (en) * | 2020-08-17 | 2020-12-18 | 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 |
| 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 |
| CN112324645A (en) * | 2020-10-16 | 2021-02-05 | 宁波君禾智能科技有限公司 | Control method of water pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106438394B (en) | 2018-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106438394A (en) | Water pump total-lift work control method, controller and water pump | |
| JP4945912B2 (en) | Fuel cell system | |
| RU2016150712A (en) | METHOD (OPTIONS) AND FUEL PRESSURE MANAGEMENT SYSTEM | |
| CN104005944A (en) | Water pump anti-freezing control system and control method thereof | |
| CN106121984B (en) | The low stop frequency control method of water pump and water pump based on Pressure Switch Sensor | |
| CN106194779A (en) | Water pump control method based on pressure transducer and controller | |
| RU2010145123A (en) | METHOD AND DEVICE FOR STARTING THE ENGINE | |
| CN110541284B (en) | Method for automatically determining water inlet level of washing machine and washing machine | |
| CN112709689B (en) | Temperature-based control method of intelligent water pump controller | |
| CN108661896A (en) | Water pump total head operation control method and controller, water pump | |
| CN106593843B (en) | A kind of constant pressure automatic running control method of speed electrical pumps | |
| CN202772858U (en) | Soyabean milk machine with power cut memory circuit | |
| CN107687418B (en) | A kind of novel water shortage determination method for no flow sensor constant pressure water supply system | |
| CN106151004B (en) | A kind of water-aspirator pressure surge tank fault detection method and water pump | |
| CN106150994B (en) | A kind of water pump control method and controller, the water pump using this method | |
| CN102953923A (en) | Air-supplementing pressurized-water control method for phase modulation of water-turbine generator set | |
| CN108894285B (en) | Method for judging whether liquid level of constant-pressure floating ball reaches set value | |
| KR20090035791A (en) | Zero-flow discrimination and control for the booster pump applied inverters | |
| US8135529B2 (en) | Method for controlling constant-pressure fluid | |
| CN204984830U (en) | Energy -saving device for air compressor | |
| CN200986353Y (en) | Device for controlling amount of feeding liquid of full liquid type water-cooling screw rod water chilling unit | |
| CN107781150B (en) | Motor start-stop control method and control device of supercharging equipment | |
| CN112963336B (en) | Control method of water pump | |
| CN110805542B (en) | Cooling water control method, device and system and computer readable medium | |
| CN101881764A (en) | Hibernation method and control system of biochemical analyzer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |