CN110617204A - Intelligent control method for water pump - Google Patents
Intelligent control method for water pump Download PDFInfo
- Publication number
- CN110617204A CN110617204A CN201911003064.6A CN201911003064A CN110617204A CN 110617204 A CN110617204 A CN 110617204A CN 201911003064 A CN201911003064 A CN 201911003064A CN 110617204 A CN110617204 A CN 110617204A
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- China
- Prior art keywords
- water pump
- pressure
- stop
- temperature
- control method
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
- F04B49/022—Stopping, starting, unloading or idling control by means of pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The invention provides an intelligent control method of a water pump, wherein a cavity at the outlet end of the water pump is provided with a pressure sensor and a temperature sensor, and a controller controls the water pump to stop by presetting the stop pressure of the water pump; when the operating pressure of the water pump cannot reach the preset stop pressure, the controller controls the water pump to stop through the temperature change of the temperature sensor, and the stop pressure of the water pump is reset.
Description
Technical Field
The invention relates to the technical field of water pumps, in particular to the technical field of automatic control of civil water pumps, and specifically relates to an intelligent control method of a water pump.
Background
Along with the improvement of the living standard of people and the requirement on automation, the demand of the civil water pump, particularly the automatic control technology of the household water pump, is more and more strong.
At present, the civil water pump mainly realizes automatic control by means of a flow switch and pressure switch dual control technology, and in addition, the civil water pump also realizes automatic control by independently using a pressure sensor.
Although the automatic operation of the water pump can be realized by using the flow switch and pressure switch dual control technology, the starting pressure of the pressure switch is fixed, and the automatic regulation of the starting pressure cannot be realized along with the change of the water pressure of the tap water in the tap water pressure increase, so that the water pump cannot be started frequently.
In addition, the flow switch is used for controlling the water pump to stop, and the flow switch is complex in structure and easy to scale or block in the using process, so that the water pump cannot stop and the like; the service life of the automatic control water pump cannot be guaranteed, and great inconvenience is brought to users.
The method for realizing the automatic control of the water pump by independently using the pressure sensor has the advantages that the monitoring signal of the water pump only has one pressure signal, the start and stop of the water pump can be controlled only by the pressure signal, the control accuracy is not enough in the actual use process, and the abnormal start and stop of the water pump are easily caused; particularly, when the water inlet pressure changes, the power supply voltage fluctuates or the performance of the water pump is reduced, and the operation pressure of the water pump cannot reach the preset stop pressure, the water pump cannot be normally stopped, so that the water pump runs for a long time, electric energy is wasted, and the pipeline is more likely to burst in serious cases.
Therefore, a water pump control method which has high control precision and can automatically adapt to different water requirements is needed to realize automatic control of the civil water pump.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an intelligent control method of a water pump, which is used for accurately controlling the starting and stopping of the water pump and adapting to different water using environments and water using requirements.
The technical scheme adopted by the invention is as follows:
an intelligent control method of a water pump is characterized in that a pressure sensor and a temperature sensor are arranged in a cavity at the outlet end of the water pump, and a controller controls the water pump to stop by presetting the stop pressure of the water pump; when the operating pressure of the water pump cannot reach the preset stop pressure, the controller controls the water pump to stop through the temperature change of the temperature sensor, and the stop pressure of the water pump is reset.
Further, when the operating pressure of the water pump cannot reach the preset shutdown pressure and the temperature rise of the temperature sensor reaches T ℃, the controller controls the water pump to be shut down and records the current shutdown pressure value P, and the shutdown pressure of the water pump is reset to be P-Px; wherein: said 1< T <5, said 0.05bar < Px <0.5 bar.
Further, the controller automatically adjusts the starting pressure of the water pump according to the stopping pressure of the water pump, and when the pressure sensor detects that the current pressure is lower than the starting pressure, the controller controls the water pump to start.
Further, the above-mentioned startup pressure is axthe shutdown pressure, where 0.4< a < 0.9.
Further, when the water pump is in a stop state, and the temperature sensor detects that the current temperature is lower than T0 ℃, the controller controls the water pump to operate for T minutes; wherein: t0<5, 1< T < 10.
Further, when the water pump is in a stop state, when the temperature sensor detects that the current temperature is lower than T1 ℃, the controller controls the water pump to operate until the temperature sensor detects that the temperature reaches T2 ℃, and the water pump is stopped; wherein T1<5, T2> T1.
The invention has the beneficial effects that:
according to the intelligent control method of the water pump, the outlet end cavity of the water pump is monitored by the pressure sensor and the temperature sensor, the water pump is controlled doubly by the controller according to signals detected by the pressure sensor and the temperature sensor, accurate control of the water pump is achieved, normal starting and stopping of the water pump are effectively guaranteed, and water use experience of a user is greatly improved.
Meanwhile, the controller forcibly operates the water pump through a temperature signal detected by the temperature sensor, so that the water pump is not frozen and cracked under a low-temperature condition, the pump body is effectively protected, and an anti-freezing function is realized.
Drawings
Fig. 1 is a functional module connection diagram of an intelligent control method for a water pump according to embodiment 1 of the present invention;
fig. 2 is a schematic control logic diagram of an intelligent control method for a water pump according to embodiment 1 of the present invention;
fig. 3 is a schematic diagram of an anti-freezing control logic of an intelligent control method for a water pump according to embodiment 2 of the present invention;
fig. 4 is a schematic diagram of another antifreeze control logic of an intelligent control method for a water pump according to embodiment 3 of the present invention.
Detailed Description
Example 1
As shown in fig. 1, a functional module of the water pump includes a pump body 02, a driving motor 01, a pressure sensor 03, a temperature sensor 04, and a controller 05, wherein the pressure sensor 03 and the temperature sensor 04 are both mounted on a water outlet end cavity of the pump body 02 and are in communication connection with the controller 05; the external power supply is connected to the controller 05, and the controller 05 is connected to the driving motor 01.
Referring to fig. 1 and 2, the control steps of an intelligent control method for a water pump include:
the first step is as follows: the power supply is powered on, and the water pump is started;
the second step is that: the controller 05 reads the current pressure and temperature through the pressure sensor 03 and the temperature sensor 04 respectively, and records the temperature after starting as T DEG C;
the third step: judging whether the current pressure reaches a preset shutdown pressure or not, and if the current pressure reaches the preset shutdown pressure, controlling the water pump to be shut down and maintaining the water pump to be stopped;
otherwise, continuously judging whether the current temperature is greater than (T + Tx) DEG C; if the current temperature is higher than (T + Tx) DEG C, the controller 05 controls the water pump to stop, and resets the stop pressure of the water pump, and simultaneously keeps the water pump to stop; where 1< Tx < 10.
The fourth step: the controller 05 reads the current pressure through the pressure sensor 03 and judges whether the current pressure is lower than the starting pressure; if the current pressure is lower than the starting pressure, restarting the water pump; the start-up pressure is axthe shut-down pressure, where 0.4< a < 0.9.
More specifically, the civil water pump has a plurality of use scenes, such as domestic tap water pressurization, water well water pumping pressurization, water tower downward pressurization, water tower pressurization and the like; when the water pump is in a pressurizing process and a user does not continue to use water, the water pump needs to be automatically controlled to stop, an automatic control system of the common water pump comprises a pressure sensor and a controller, the stop pressure of the water pump is preset in the controller, and when the running pressure of the water pump reaches the preset stop pressure, the controller controls the water pump to automatically stop; however, in the actual use process, the operation conditions of the water pump are greatly different, and the actual water pressure of the pipeline is greatly changed; at this moment, the operating pressure of water pump just probably can't reach the shut-down pressure of predetermineeing of water pump, and then causes the water pump can't realize the auto-stop, and under the condition that the water pump does not go out water, the water pump keeps long-time operation, all causes harmful effects to the mechanical seal of water pump, pipeline, bearing and motor, and it is extravagant to be an energy in addition, brings extra charges of electricity expenditure for the user.
Therefore, the control method can realize that the water pump can still realize automatic stop under the condition of working condition change; specifically, a pressure sensor 03 and a temperature sensor 04 are arranged on a water outlet end cavity of the pump body 02; when the user does not continue to use water, all valves at the water outlets of the water pumps are closed by the user, and at the moment, if the running pressure of the water pumps cannot reach the preset shutdown pressure due to the change of working conditions, because outlet pipelines of the water pumps are closed, the energy transfer form of the water pumps can be changed under the high-speed rotation of impellers, partial electric energy is converted into heat energy through the quick impact of the high-speed rotation of the impellers and the water sealed in pump cavities, the water in the pump cavities is gradually heated, and the temperature is increased; and further transmit temperature sensor 04, the temperature that temperature sensor 04 detected changes, and then can come accurate control water pump shut down through temperature sensor 04's temperature rise.
Furthermore, in order to better realize the automatic shutdown control of the water pump, the preset shutdown pressure cannot be reached due to the change of the operating condition of the water pump every time, and when the shutdown is realized through the temperature change of the temperature sensor 04, the controller 02 automatically adjusts and resets the preset shutdown pressure of the water pump according to the pressure value during the shutdown at the moment, so that more accurate shutdown pressure is provided for the automatic shutdown control of the water pump next time; better user experience is obtained.
Example 2
Further, referring to fig. 3, the antifreeze control method of the intelligent control method for the water pump includes:
the first step is as follows: the water pump is in a stop state, and whether the current pressure is lower than the starting pressure is judged;
the second step is that: when the current pressure is higher than the starting pressure, continuously judging whether the current temperature is lower than 2 ℃; if the current temperature is lower than 2 ℃, the controller 05 controls the water pump to be forcibly started;
the third step: and when the water pump runs for 1 minute, controlling the water pump to stop.
When the water pump is used outdoors, if the environmental temperature is low in winter, the water pump is especially in the north; the pump cavity of the water pump is easily frozen and cracked when the water pump is stopped, so that a user needs to evacuate and protect the water pump when the environmental temperature is low, and the pump cavity of the water pump is prevented from being frozen and cracked in a low-temperature environment; however, the water pump is generally installed in basement, roof and other places, which is inconvenient for users to operate; in addition, after the pump cavity is subjected to evacuation protection, a user cannot normally use water, so that the user experience is influenced; therefore, the antifreezing control of the water pump is very necessary, and the embodiment provides an automatic antifreezing control method of the water pump, wherein the temperature in the pump cavity is detected by the aid of a temperature sensor arranged on the pump cavity at the water outlet end of the water pump, when the temperature in the pump cavity is detected by the temperature sensor to be lower than 2 ℃, the water pump is forcibly started by a controller to run, the impeller of the water pump rotates at a high speed for a certain time to disturb the water in the pump cavity, and the water in the pump cavity cannot be frozen due to low ambient temperature; therefore, the pump cavity can not be damaged due to the sudden pressure rise caused by the phase change of the water, and the water pump is effectively protected.
Example 3
Additionally, referring to fig. 4, another anti-freezing control step of the intelligent control method for the water pump includes:
the first step is as follows: the water pump is in a stop state, and whether the current pressure is lower than the starting pressure is judged;
the second step is that: when the current pressure is higher than the starting pressure, continuously judging whether the current temperature is lower than 5 ℃; if the current temperature is lower than 5 ℃, the controller 05 controls the water pump to be forcibly started;
the third step: and continuously judging whether the current temperature reaches 10 ℃, and controlling the water pump to stop if the current temperature reaches 10 ℃.
The difference between the embodiment and the embodiment 2 is that, by means of the temperature in the pump cavity detected by the temperature sensor, when the temperature is lower than the preset starting temperature, the controller controls the water pump to be forcibly started to operate, part of electric energy is converted into heat energy to heat water in the pump cavity, and the water pump is controlled to stop when the temperature reaches the preset stopping temperature; the water temperature in the pump cavity is always kept within a certain temperature range, so that the water in the pump cavity is prevented from freezing, and an effective anti-freezing effect is achieved.
Claims (6)
1. An intelligent control method of a water pump is characterized in that: the cavity at the outlet end of the water pump is provided with a pressure sensor and a temperature sensor, and the controller controls the water pump to stop by presetting the stop pressure of the water pump; when the operating pressure of the water pump cannot reach the preset stop pressure, the controller controls the water pump to stop through the temperature change of the temperature sensor, and the stop pressure of the water pump is reset.
2. The intelligent control method of the water pump according to claim 1, characterized in that: when the operating pressure of the water pump cannot reach the preset shutdown pressure and the temperature rise of the temperature sensor reaches T ℃, the controller controls the water pump to be shut down and records the current shutdown pressure value P, and the shutdown pressure of the water pump is reset to be P-Px; wherein: said 1< T <5, said 0.05bar < Px <0.5 bar.
3. The intelligent control method of the water pump according to claim 1, characterized in that: the controller automatically adjusts the starting pressure of the water pump according to the preset stopping pressure of the water pump, and when the pressure sensor detects that the current pressure is lower than the starting pressure, the controller controls the water pump to start.
4. The intelligent control method of the water pump according to claim 3, characterized in that: the start-up pressure is axthe shut-down pressure, where 0.4< a < 0.9.
5. The intelligent control method of the water pump according to any one of claims 1 to 4, characterized in that: when the water pump is in a stop state, the temperature sensor detects that the current temperature is lower than T0 ℃, and the controller controls the water pump to operate for T minutes; wherein: t0<5, 1< T < 10.
6. The intelligent control method of the water pump according to any one of claims 1 to 4, characterized in that: when the water pump is in a stop state, when the temperature sensor detects that the current temperature is lower than T1 ℃, the controller controls the water pump to operate until the temperature sensor detects that the temperature reaches T2 ℃, and the water pump is stopped; wherein T1<5, T2> T1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911003064.6A CN110617204A (en) | 2019-10-21 | 2019-10-21 | Intelligent control method for water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911003064.6A CN110617204A (en) | 2019-10-21 | 2019-10-21 | Intelligent control method for water pump |
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| Publication Number | Publication Date |
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| CN110617204A true CN110617204A (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911003064.6A Pending CN110617204A (en) | 2019-10-21 | 2019-10-21 | Intelligent control method for water pump |
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| Country | Link |
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| CN (1) | CN110617204A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709689A (en) * | 2020-12-25 | 2021-04-27 | 爱科赛智能科技(浙江)有限公司 | Temperature-based control method of intelligent water pump controller |
| CN112761932A (en) * | 2021-01-20 | 2021-05-07 | 台州谱罗顿机电有限公司 | Protection method of 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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| CN105909506A (en) * | 2016-06-30 | 2016-08-31 | 陈辉 | Water pump control method based on pressure and flow switch sensors and control device |
| CN106194779A (en) * | 2016-07-30 | 2016-12-07 | 陈辉 | Water pump control method based on pressure transducer and controller |
| CN108131303A (en) * | 2017-12-28 | 2018-06-08 | 芜湖环球汽车配件有限公司 | A kind of water pump temperature-controlled regulating system and control method |
| CN108343621A (en) * | 2018-02-28 | 2018-07-31 | 三门康创电子科技有限公司 | A kind of water pump temperature-control circuit and its control method |
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Patent Citations (5)
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| CN103671047A (en) * | 2013-12-13 | 2014-03-26 | 新界泵业集团股份有限公司 | Electric pump with controller and control method of electric pump |
| CN105909506A (en) * | 2016-06-30 | 2016-08-31 | 陈辉 | Water pump control method based on pressure and flow switch sensors and control device |
| CN106194779A (en) * | 2016-07-30 | 2016-12-07 | 陈辉 | Water pump control method based on pressure transducer and controller |
| CN108131303A (en) * | 2017-12-28 | 2018-06-08 | 芜湖环球汽车配件有限公司 | 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 |
|---|---|---|---|---|
| CN112709689A (en) * | 2020-12-25 | 2021-04-27 | 爱科赛智能科技(浙江)有限公司 | Temperature-based control method of intelligent water pump controller |
| CN112709689B (en) * | 2020-12-25 | 2022-06-21 | 爱科赛智能科技(浙江)有限公司 | Temperature-based control method of intelligent water pump controller |
| CN112761932A (en) * | 2021-01-20 | 2021-05-07 | 台州谱罗顿机电有限公司 | Protection method of 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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Application publication date: 20191227 |
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