CN101748769A - Water supply system with variable pressure and variable flow by terminal control and water supply method - Google Patents
Water supply system with variable pressure and variable flow by terminal control and water supply method Download PDFInfo
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- CN101748769A CN101748769A CN200810233970A CN200810233970A CN101748769A CN 101748769 A CN101748769 A CN 101748769A CN 200810233970 A CN200810233970 A CN 200810233970A CN 200810233970 A CN200810233970 A CN 200810233970A CN 101748769 A CN101748769 A CN 101748769A
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Abstract
The present invention discloses a water supply system with variable pressure and variable flow by terminal control and a water supply method. The water supply system comprises a water pump [6], a variable-frequency control system [7] and a pipe network [5] for supplying users with water. A pressure feedback point arranged on the pipe network [5] is linked with the variable-frequency control system [7], so the pressure feedback point keeps constant pressure. The water supply system also comprises a radio communication network [1], a radio signal transmitter [2] and a radio signal receiver [9]. The pressure feedback point is arranged at the furthest end [4] of the pipe network [5]. Water pressure signals are sent by the radio signal transmitter [2] to the radio signal receiver [9] through the radio communication network [1]. After the water pressure signals are received by the radio signal receiver [9], the pressure of the pressure feedback point kept constant by the variable-frequency control system [7]. The use of the water supply system for supplying water has the advantage of energy saving.
Description
Technical field
The present invention relates to a kind of water factory water system and method for supplying water, especially realize the water system and the method for supplying water of variable pressure and flow by terminal control.
Background technology
Water supply is widely used in the every field of city and industrial and agricultural production.The widely used water system of each water factory is that constant voltage, variable way of supplying water supply water now, this system comprises the frequency-changing control system of water pump, control of pump rotating speed and the pipe network that supplies water to the user, at the exit of pump near-end pressure feedback point and the wired interlock of frequency-changing control system are set, automatically regulate the rotating speed of water pump with the variation of output, keep water factory's outlet pressure constant.Pump speed control is meant that water pump moves under the motor-driven of adjustable speed, by changing the operating point that rotating speed changes pump installation.Now widely used is variable-frequency control technique.The advantage of above-mentioned method of supplying water is 1, the efficient height; The power factor height, good energy-conserving effect.2, characteristic is hard, the adjusting speed accuracy height; 3, stepless speed regulation; 4, speed adjustable range is big; 5, starting less energy consumption.Though the frequency modulation water supply technology has an enormous advantage, but also expose its limitation and shortcoming in the practical application: 1. because the pressure feedback point of constant voltage control is located at the delivery side of pump near-end, what it produced is that the output water ductwork pressure is constant, pressure and flow needs in order to satisfy user peak period water like this, just take the variation of the head loss that brings with changes in flow rate less than pipeline into account, when user's ebb water, very big unnecessary head waste can appear.2. pressure of supply water and the traffic demand of user every day also are periodically variable, and early, middle and late and time after midnight, hydraulic demand also was not quite similar more refinement of pressure control.3. pressure is low more, and the urban pipe network leakage is just more little, and unnecessary pressure has caused the unnecessary leakage of pipe network.Therefore existing water system also has many places of taping the latent power in energy-conservation and water saving.
Summary of the invention
The present invention is exactly the deficiency that solves existing hydrotechny, and a kind of energy-saving water supply system and method for supplying water of realizing variable pressure and flow by terminal control is provided.
The technical solution used in the present invention is: terminal control realizes the system that variable pressure and flow supplies water, it comprises water pump, the frequency-changing control system of control of pump rotating speed and the pipe network that supplies water to the user, pipe network is provided with pressure feedback point and frequency-changing control system interlock, make pressure feedback point keep constant pressure, it also comprises wireless communication networks, the wireless signal transmitter that pressure feedback point pressure signal is launched and with the wireless signal receiver of the adaptive reception pressure signal of wireless signal transmitter, described pressure feedback point is arranged at the pipe network distal-most end, wireless signal transmitter realizes and the transmission of wireless signal receiver hydraulic signal that by wireless communication networks wireless signal receiver receives that hydraulic signal makes pressure feedback point keep constant pressure by frequency-changing control system.
A kind of method of supplying water that utilizes above-mentioned water system, it supplies water as follows:
(1) establishes the required service hydraulic pressure value of water supply network distal-most end;
(2) pressure set points of frequency-changing control system is the required service hydraulic pressure value of pipe network distal-most end, makes pipe network distal-most end hydraulic pressure keep the service hydraulic pressure value, supplies water.
Above-mentioned pipe network distal-most end is meant that this point satisfies the pressure of supply water demand, and all users satisfy the pressure of supply water demand on the pipe network.
Adopt above-mentioned water system and method for supplying water to supply water, because water system makes pipe network distal-most end hydraulic pressure keep constant by automatic adjusting, make characteristic curve of pipeline and system's static lift constant, the water pump water outlet mouth pressure then changes according to characteristic curve of pipeline along with output changes, realized " how many systems needs; how many units provides ", not can owing to output reduce to produce unnecessary static lift, so energy-saving effect is better.
Because the user's water on the pipe network is in the different periods, required hydraulic pressure is also inequality, and for more energy-conservation, the service hydraulic pressure value is carried out timesharing and changed.
In sum, the invention has the beneficial effects as follows: because water system makes pipe network user side hydraulic pressure keep constant by automatic adjusting, not can owing to output reduce to produce unnecessary static lift, therefore energy-conservation.
Description of drawings
Fig. 1 is the schematic diagram of water system of the present invention.
Among the figure, 1, wireless communication networks, 2, wireless signal transmitter, 3, pressure sensor, 4, the pipe network distal-most end, 5, pipe network, 6, water pump, 7, frequency-changing control system, 8, water factory, 9, wireless signal receiver.
The specific embodiment
The terminal control of the present invention realizes the system that variable pressure and flow supplies water, as shown in Figure 1, it comprises water pump 6, the frequency-changing control system 7 of control of pump 6 rotating speeds and the pipe network 5 that supplies water to the user, pipe network 5 is provided with pressure feedback point and frequency-changing control system 7 interlocks, make pressure feedback point keep constant pressure, it also comprises wireless communication networks 1, the wireless signal transmitter 2 that pressure feedback point pressure signal is launched and with the wireless signal receiver 9 of wireless signal transmitter 2 adaptive reception pressure signals, described pressure feedback point is arranged at pipe network distal-most end 4, wireless signal transmitter 2 realizes and the transmission of wireless signal receiver 9 hydraulic signals that by wireless communication networks 1 wireless signal receiver 9 receives that hydraulic signal makes pressure feedback point keep constant pressure by frequency-changing control system 7 control of pump 6 rotating speeds.
The collection of pressure feedback point pressure is to be provided with pressure sensor 3 at the pressure feedback point, the distal-most end hydraulic pressure value is sent hydraulic signal by wireless signal transmitter 2, by wireless communication networks 1, wireless signal receiver 9 is received behind the signal makes pipe network distal-most end 4 hydraulic pressure keep constant by the motor speed of frequency-changing control system 7 control of pump 6.
The method of utilizing above-mentioned water system to supply water, it supplies water as follows:
(1) establishes the required service hydraulic pressure value of water supply network distal-most end;
(2) pressure set points of frequency-changing control system is the required service hydraulic pressure value of pipe network distal-most end, makes pipe network distal-most end hydraulic pressure keep the service hydraulic pressure value, supplies water.
(3) according to distal-most end water situation, the pressure that the refinement water is required is set lower pressure as 1:00 AM to 4:00 AM, and daytime can be by the morning, noon and afternoon peak, the different periods such as ebb, set different pressures, and supply water.
Because obviously lagging behind the pressure of exit of pump, the pressure change of pipe network end changes, the time root pipe network capacity that lags behind is relevant, can detect, be generally several minutes, the mode that adopts pressure to approach one by one, slightly repeatedly adjust the rotating speed of frequency converter, to prevent because of regulating the too fast ductwork pressure big ups and downs that cause.
Claims (3)
1. terminal control realizes the system that variable pressure and flow supplies water, it comprises water pump [6], the frequency-changing control system [7] of control of pump [6] rotating speed and the pipe network [5] that supplies water to the user, pipe network [5] is provided with pressure feedback point and frequency-changing control system [7] interlock, make pressure feedback point keep constant pressure, it is characterized in that it also comprises wireless communication networks [1], the wireless signal transmitter [2] that pressure feedback point pressure signal is launched and with the wireless signal receiver [9] of the adaptive reception pressure signal of wireless signal transmitter [2], described pressure feedback point is arranged at pipe network distal-most end [4], wireless signal transmitter [2] realizes and the transmission of wireless signal receiver [9] hydraulic signal that by wireless communication networks [1] wireless signal receiver [9] receives that hydraulic signal passes through frequency-changing control system [7] and makes pressure feedback point keep constant pressure.
2. method of supplying water that utilizes the described water system of claim 1 is characterized in that it supplies water as follows:
(1) establishes the required service hydraulic pressure value of water supply network distal-most end;
(2) pressure set points of frequency-changing control system is the required service hydraulic pressure value of pipe network distal-most end, makes pipe network distal-most end hydraulic pressure keep the service hydraulic pressure value, supplies water.
3. method of supplying water according to claim 2 is characterized in that described service hydraulic pressure value timesharing changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810233970A CN101748769A (en) | 2008-12-17 | 2008-12-17 | Water supply system with variable pressure and variable flow by terminal control and water supply method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810233970A CN101748769A (en) | 2008-12-17 | 2008-12-17 | Water supply system with variable pressure and variable flow by terminal control and water supply method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101748769A true CN101748769A (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810233970A Pending CN101748769A (en) | 2008-12-17 | 2008-12-17 | Water supply system with variable pressure and variable flow by terminal control and water supply method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104066900A (en) * | 2011-11-21 | 2014-09-24 | 约纳·西纳什 | Method and apparatus for monitoring a network of conduits |
| CN106013335A (en) * | 2016-07-04 | 2016-10-12 | 重庆成峰二次供水设备有限责任公司 | Smart variable-pressure water supply control system |
| CN111080064A (en) * | 2019-11-18 | 2020-04-28 | 上海城投水务(集团)有限公司供水分公司 | Method and system for generating water supply network pressure-stabilizing water supply scheme |
| CN112627289A (en) * | 2020-12-21 | 2021-04-09 | 河北利万信息科技有限公司 | Control method for intelligent power saving of water supply pressurization |
| CN114963015A (en) * | 2022-07-13 | 2022-08-30 | 武汉杰威信息技术有限公司 | Intelligent management method and device for water pipe network, electronic equipment and storage medium |
-
2008
- 2008-12-17 CN CN200810233970A patent/CN101748769A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104066900A (en) * | 2011-11-21 | 2014-09-24 | 约纳·西纳什 | Method and apparatus for monitoring a network of conduits |
| CN106013335A (en) * | 2016-07-04 | 2016-10-12 | 重庆成峰二次供水设备有限责任公司 | Smart variable-pressure water supply control system |
| CN111080064A (en) * | 2019-11-18 | 2020-04-28 | 上海城投水务(集团)有限公司供水分公司 | Method and system for generating water supply network pressure-stabilizing water supply scheme |
| CN112627289A (en) * | 2020-12-21 | 2021-04-09 | 河北利万信息科技有限公司 | Control method for intelligent power saving of water supply pressurization |
| CN114963015A (en) * | 2022-07-13 | 2022-08-30 | 武汉杰威信息技术有限公司 | Intelligent management method and device for water pipe network, electronic equipment and storage medium |
| CN114963015B (en) * | 2022-07-13 | 2022-11-08 | 武汉杰威信息技术有限公司 | Intelligent management method and device for water pipe network, electronic equipment and storage medium |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100623 |