CN104088327B - A kind of need-based secondary water-supply apparatus control system and control method thereof - Google Patents
A kind of need-based secondary water-supply apparatus control system and control method thereof Download PDFInfo
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- CN104088327B CN104088327B CN201410254044.7A CN201410254044A CN104088327B CN 104088327 B CN104088327 B CN 104088327B CN 201410254044 A CN201410254044 A CN 201410254044A CN 104088327 B CN104088327 B CN 104088327B
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Abstract
The invention discloses a kind of need-based secondary water-supply apparatus control system and control method thereof, comprise the water supply network delivery port pressure detecting table be electrically connected successively, controller, variable-frequency governor and pressure pump, also comprise user's water nozzle flow meter, its output is electrically connected with the input of described controller, the water supply volume of user's water nozzle flow meter accurate Calculation user delivery port, and by data on flows input control device, controller adds up connecing all datas on flows collected, draw the water supply flow that the user in whole water supply coverage needs, according to the requirement of the water supply flow that the user in whole water supply coverage needs, control the frequency of variable-frequency governor, thus regulate the rotating speed of pressure pump, the output that user needs is pressurized to water supply network delivery port, accomplish user uses how much water, we just supply the water of how many flows, thus supply water according to the demand of user, realize supplying water as required, accurate water supply, saving water resource and electric energy.
Description
Technical field
The present invention relates to secondary water-supply equipment, be specifically related to a kind of need-based secondary water-supply apparatus control system and control method thereof.
Background technology
Secondary water-supply alleged by usual people, refer to that city public water supply or self-built facility supply water through storing by unit or individual, pressurization, supply user or personal form again by pipeline, therefore, secondary water-supply is the only selection mode of current high-floor feedwater.
Secondary water-supply facility is mainly and makes up municipal water supply line pressure deficiency, and guarantee is lived, live in high-rise crowd's water sets up.Compare former water to supply water, the safety and reliability of secondary water-supply is all subject to civic extensive concern always.Traditional secondary water-supply equipment all adopts triangular web to supply water, its control system as shown in Figure 1, water supply network delivery port pressure detecting table gathers the pressure of water supply network delivery port, and be sent to controller, the water supply network delivery port force value received and the user preset compare by hydraulic pressure force value by controller, the frequency of variable-frequency governor is regulated according to both differences, thus regulate the rotating speed of pressure pump, make water system automatic constant-pressure surely in the force value set: namely water supply network delivery port force value be less than setting user by hydraulic pressure force value time, controller controls variable-frequency governor and improves frequency, accelerate pump rotary speed, this ensures that there whole user's pipe network and have sufficient hydraulic pressure at any time, consistent with the pressure that user sets, when the user that water supply network delivery port force value is greater than setting is by hydraulic pressure force value, controller controls variable-frequency governor and reduces frequency, and the pump rotary speed that slows down slows down, when the user that water supply network delivery port force value exceedes setting is very high by hydraulic pressure force value, controller stops variable-frequency governor, thus stops the running of water pump, reaches the object of proterctive equipment.
But there is following shortcoming in traditional secondary water-supply equipment:
1, only have when after despite pressure fluctuations, controller could start to regulate pressure, and needs pressure to be delivered to water supply network end, and the hysteresis of control is serious, and governing speed is slow;
2, owing to there is hysteresis, after only having the pressure when water supply network to exceed the setting pressure long period (relevant with pipe network length), controller just starts the rotating speed regulating pressure pump, on the one hand, easily causes water supply network superpressure, damages water supply network; On the other hand, also result in meaningless energy loss;
3, cannot supply water according to the demand of user, easy booster, causes water resource serious waste.
Summary of the invention
The present invention aims to provide a kind of need-based secondary water-supply apparatus control system and control method thereof, realizes supplying water as required.
To achieve these goals, the present invention adopts following technical scheme:
A kind of need-based secondary water-supply apparatus control system, comprise the water supply network delivery port pressure detecting table be electrically connected successively, controller, variable-frequency governor and pressure pump, also comprise user's water nozzle flow meter, the output of described user's water nozzle flow meter is electrically connected with the input of described controller, the water supply volume of described user's water nozzle flow meter accurate Calculation user delivery port, and by data on flows input control device, the all datas on flows collected add up by controller, draw the water supply flow that the user in whole water supply coverage needs, according to the requirement of the water supply flow that the user in whole water supply coverage needs, control the frequency of variable-frequency governor, thus regulate the rotating speed of pressure pump.
The invention also discloses a kind of need-based secondary water-supply apparatus control method, comprise the steps:
The first step, the water supply network delivery port force value received and the user preset compare by hydraulic pressure force value by controller, regulate the frequency of variable-frequency governor according to both differences, thus regulate the rotating speed of pressure pump, realize supplying water;
Second step: by the flow parameter of user's water nozzle flowmeter survey user with grid delivery port, and by data on flows input control device;
3rd step: all flow parameters received add up by controller, draws the water supply flow that the user in whole water supply coverage needs;
4th step: the water supply flow that controller needs according to the user in whole water supply coverage, controls the frequency of variable-frequency governor, thus regulates the rotating speed of pressure pump, the output that user needs is pressurized to water supply network delivery port.
Adopt secondary water-supply device controller and the control method thereof of the demand that the present invention is based on, can supply water according to the demand of user, realize supplying water as required, accurately supplying water, saving water resource and electric energy.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is elaborated:
Fig. 1 shows the circuit block diagram of traditional secondary water supply equipment control system.
Fig. 2 shows the circuit block diagram of the secondary water-supply apparatus control system of the demand of the present invention is based on.
Detailed description of the invention
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.
As shown in Figure 2, a kind of need-based secondary water-supply apparatus control system, comprise the water supply network delivery port pressure detecting table, controller, variable-frequency governor and the pressure pump that are electrically connected successively, also comprise user's water nozzle flow meter, the output of described user's water nozzle flow meter is electrically connected with the input of described controller, described user's water nozzle flow meter is arranged on after water supply network delivery port on any position before user's water nozzle, for the water supply volume of accurate Calculation user delivery port, and by data on flows input control device.
During equipment initial launch, the water supply network delivery port force value received and the user preset compare by hydraulic pressure force value by controller, regulate the frequency of variable-frequency governor according to both differences, thus regulate the rotating speed of pressure pump, realize supplying water.Meanwhile, the water supply volume of user's water nozzle flow meter accurate Calculation user delivery port, and by data on flows input control device, the all datas on flows collected add up by controller, draw the water supply flow that the user in whole water supply coverage needs, now, controller is by the requirement of the water supply flow according to the user's needs in whole water supply coverage, control the frequency of variable-frequency governor, thus regulate the rotating speed of pressure pump, the output that user needs is pressurized to water supply network delivery port, accomplish user uses how much water, we just supply the water of how many flows, thus supply water according to the demand of user, realize supplying water as required, accurate water supply, saving water resource and electric energy.
Controller can be programmable controller PLC, MCU or other realize the controller of function described above.
The invention also discloses a kind of need-based secondary water-supply apparatus control method, comprise the steps:
The first step, the water supply network delivery port force value received and the user preset compare by hydraulic pressure force value by controller, regulate the frequency of variable-frequency governor according to both differences, thus regulate the rotating speed of pressure pump, realize supplying water;
Second step: by the flow parameter of user's water nozzle flowmeter survey user with grid delivery port, and by data on flows input control device;
3rd step: all flow parameters received add up by controller, draws the water supply flow that the user in whole water supply coverage needs;
4th step: the water supply flow that controller needs according to the user in whole water supply coverage, controls the frequency of variable-frequency governor, thus regulates the rotating speed of pressure pump, the output that user needs is pressurized to water supply network delivery port.
Claims (2)
1. a need-based secondary water-supply apparatus control system, comprise the water supply network delivery port pressure detecting table be electrically connected successively, controller, variable-frequency governor and pressure pump, it is characterized in that: also comprise user's water nozzle flow meter, the output of described user's water nozzle flow meter is electrically connected with the input of described controller, the water supply volume of described user's water nozzle flow meter accurate Calculation user delivery port, and by data on flows input control device, the all datas on flows collected add up by controller, draw the water supply flow that the user in whole water supply coverage needs, according to the requirement of the water supply flow that the user in whole water supply coverage needs, control the frequency of variable-frequency governor, thus regulate the rotating speed of pressure pump.
2. be applied to a need-based secondary water-supply apparatus control method for control system as claimed in claim 1, it is characterized in that: comprise the steps:
The first step, the water supply network delivery port force value received and the user preset compare by hydraulic pressure force value by controller, regulate the frequency of variable-frequency governor according to both differences, thus regulate the rotating speed of pressure pump, realize supplying water;
Second step: by the flow parameter of user's water nozzle flowmeter survey user with grid delivery port, and by data on flows input control device;
3rd step: all flow parameters received add up by controller, draws the water supply flow that the user in whole water supply coverage needs;
4th step: the water supply flow that controller needs according to the user in whole water supply coverage, controls the frequency of variable-frequency governor, thus regulates the rotating speed of pressure pump, the output that user needs is pressurized to water supply network delivery port.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410254044.7A CN104088327B (en) | 2014-06-10 | 2014-06-10 | A kind of need-based secondary water-supply apparatus control system and control method thereof |
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| CN201410254044.7A CN104088327B (en) | 2014-06-10 | 2014-06-10 | A kind of need-based secondary water-supply apparatus control system and control method thereof |
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| CN104088327A CN104088327A (en) | 2014-10-08 |
| CN104088327B true CN104088327B (en) | 2016-04-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104746567B (en) * | 2015-04-03 | 2016-08-17 | 四川玉树科技（集团）有限公司 | Water system pipes frictional head loss compensating controller |
| CN106896740B (en) * | 2015-12-17 | 2019-08-16 | 英业达科技有限公司 | House water resource managing and control system and its method |
| CN105569124B (en) * | 2016-01-31 | 2017-12-01 | 天津市建筑设计院 | A kind of frequency control voltage transformation water supply installation and its control method |
| CN105951931B (en) * | 2016-05-12 | 2018-09-18 | 江苏力达自动化设备有限公司 | A kind of intelligent secondary water-supply equipment based on Internet of Things |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202767178U (en) * | 2012-05-28 | 2013-03-06 | 宁波高新区宁水节能科技有限公司 | Energy-saving adaptive control system for intelligent multi-pressure water supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0895645A (en) * | 1994-09-29 | 1996-04-12 | Toshiba Corp | Water supply terminal pressure controller |
| CN2853917Y (en) * | 2005-07-20 | 2007-01-03 | 石家庄紫藤惠尔科技有限公司 | Pipe net direct-connection negative pressure frequency control of speed water supply equipment |
| CN102444174A (en) * | 2011-12-16 | 2012-05-09 | 安徽禾田电气有限公司 | Double closed-loop constant-pressure control system for water supply |
| CN202595802U (en) * | 2012-05-22 | 2012-12-12 | 杭州杭开新能源科技有限公司 | Water supply system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202767178U (en) * | 2012-05-28 | 2013-03-06 | 宁波高新区宁水节能科技有限公司 | Energy-saving adaptive control system for intelligent multi-pressure water supply |
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