CN102444174A - Double closed-loop constant-pressure control system for water supply - Google Patents
Double closed-loop constant-pressure control system for water supply Download PDFInfo
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- CN102444174A CN102444174A CN2011103623049A CN201110362304A CN102444174A CN 102444174 A CN102444174 A CN 102444174A CN 2011103623049 A CN2011103623049 A CN 2011103623049A CN 201110362304 A CN201110362304 A CN 201110362304A CN 102444174 A CN102444174 A CN 102444174A
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Abstract
The invention discloses a double closed-loop constant-pressure control system for a water supply, comprising a water pump, a water supply tube and a frequency converter, wherein a pressure transmitter is installed on the water supply tube close to the water pump; another pressure transmitter is installed at the far end of the water supply tube close to a user; the two pressure transmitters are connected with an intelligent two-path regulation controller; and the intelligent two-path regulation controller is connected with the frequency converter. The double closed-loop constant-pressure control system for a water supply disclosed by the invention is an improvement for a present constant-pressure water supply system, which adequately considers the requirements of middle-end and tail-end users, performs an intelligent tracking and a terminal control parameter compensation and correction via a new technology, and automatically regulates a water supply pressure according to the changes of the water consumptions of the users, so that the middle-end and tail-end users achieve or approach to the design demand of the water supply pressure.
Description
Technical field
The control field that the present invention relates to supply water relates in particular in the water works, the various two closed loop control system of invariable pressure that have the place of requirement to use to pipe water supply pressure such as sub-district.
Background technology
At present in the water system, consider the constant pressure that will guarantee water, several kinds of water supply schemes below main the employing: 1, old-fashioned water tower water-feeding, this way of supplying water has been in the stage of eliminating now; 2, pressure pot type constant pressure water supply is cheap, but occupied ground, along with the increase of output, volume also increases exponentially thereupon; 3, the constant pressure water supply system (single-point closed loop) of emerging extensive employing recent years, this way of supplying water is when water supply volume is little, and each user's pressure of supply water difference is little, supplies water to meet demand basically.But when water supply volume is big, middle-end or terminal owing to the increase of leading portion user water supply volume causes pressure of supply water to be reduced to below the setting value.At this moment have only through manually-operated, revise the pressure parameter of water pump.Along with the minimizing of leading portion user water supply volume, need manual work to turn down pressure parameter again.If can not in time turn down, frequency converter is still kept higher rotation speed, then can increase energy consumption.Therefore, this way of supplying water can increase human cost, is difficult to each water point pressure of assurance and can in time adjusts, keep constant.
Summary of the invention
The purpose of this invention is to provide the two closed loop control system of invariable pressure of a kind of water supply, solved present constant pressure water supply system and can not regulate pressure of supply water automatically, thereby caused the hypotensive problem of water of middle-end or terminal temperature difference with the variation of water supply volume.
For realizing above-mentioned purpose, adopt following technical scheme:
Two closed loop control system of invariable pressure supply water; Comprise water pump, feed pipe and frequency converter; Near the water pump place pressure transmitter is installed on the said feed pipe; The feed pipe far-end is equipped with another pressure transmitter near the user place, and two pressure transmitters are regulated controller with intelligent two-way and linked to each other, and intelligent two-way is regulated controller and linked to each other with frequency converter.
As a preferred version, it is the feed pipe 1/2nd or 2/3rds places of starting point that the pressure transmitter that said feed pipe far-end is installed is positioned at the water pump.
The present invention improves present constant pressure water supply system; Fully take into account the demand of middle-end and terminal temperature difference; Employ new technology and carry out intelligent-tracking; Controlling parameter compensation in terminal is revised, and regulates pressure of supply water automatically according to the variation of user's water supply volume, thereby the middle-end of making and terminal temperature difference reach or near the pressure of supply water designing requirement.
Description of drawings
According to embodiment and accompanying drawing the present invention is done further explain below:
Fig. 1 is a control system schematic of the present invention;
Fig. 2 is the structural representation of first embodiment of the present invention;
Fig. 3 is the structural representation of an alternative embodiment of the invention.
Among the figure:
1, water pump; 2, frequency converter; 3, intelligent two-way is regulated controller; 4, pressure transmitter one; 5, pressure transmitter two; 6, pipe pressurizing pump; 7, feed pipe; 8, deep water pump.
The specific embodiment
Below in conjunction with accompanying drawing, further specify the present invention through embodiment.
As shown in Figure 1; It is control system works flow process of the present invention; Comprise water pump 1, frequency converter 2, pressure transmitter 1, pressure transmitter 25 and intelligent two-way adjusting controller 3; Two pressure transmitters 4,5 are regulated controller 3 with intelligent two-way and are linked to each other, and intelligent two-way is regulated controller 3 and linked to each other with frequency converter 2.Pressure transmitter 1 is measured water pump 1 place's pressure of supply water, and pressure transmitter 25 is measured the user and located hydraulic pressure, and two pressure transmitters 4,5 are imported intelligent two-way with measured value and regulated controller 3.When water supply volume causes pressure transmitter 25 to record hydraulic pressure more greatly being lower than setting value; The intelligence two-way is regulated controller 3 and is calculated automatically according to two pressure difference values; Provide correction value, export this correction value to frequency converter 2 again, frequency converter 2 is according to the rotating speed of the real-time control of pump 1 of correction value; Change pressure of supply water, thereby need to have guaranteed water user's quality of water supply.
Fig. 2 shows one embodiment of the present of invention, and native system is applied in the piped water supply, and pressure transmitter 1 is installed on the feed pipe 7 near pipe pressurizing pump 6 places, and pressure transmitter 25 is installed on the feed pipe 7 apart from pipe pressurizing pump 2/6ths three places.
Fig. 3 shows an alternative embodiment of the invention; Native system is applied in the single well type water supply; Pressure transmitter 1 is installed on the outer feed pipe 7 of well near deep water pump 8 places, and pressure transmitter 25 is installed on the feed pipe 7 apart from deep water pump 2/8ths three places.
The present invention regulates pressure of supply water to realizing according to the variation of user's water supply volume automatically, thereby makes the middle-end in the water system and terminal temperature difference reaches or near the pressure of supply water designing requirement.
Claims (2)
1. two closed loop control system of invariable pressure supply water; Comprise water pump, feed pipe and frequency converter; It is characterized in that: near the water pump place pressure transmitter is installed on the said feed pipe; The feed pipe far-end is equipped with another pressure transmitter near the user place, and two pressure transmitters are regulated controller with intelligent two-way and linked to each other, and intelligent two-way is regulated controller and linked to each other with frequency converter.
2. the two closed loop control system of invariable pressure of water supply according to claim 1, it is characterized in that: it is the feed pipe 1/2nd or 2/3rds places of starting point that the pressure transmitter that said feed pipe far-end is installed is positioned at the water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103623049A CN102444174A (en) | 2011-12-16 | 2011-12-16 | Double closed-loop constant-pressure control system for water supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103623049A CN102444174A (en) | 2011-12-16 | 2011-12-16 | Double closed-loop constant-pressure control system for water supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102444174A true CN102444174A (en) | 2012-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103623049A Pending CN102444174A (en) | 2011-12-16 | 2011-12-16 | Double closed-loop constant-pressure control system for water supply |
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| CN (1) | CN102444174A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088327A (en) * | 2014-06-10 | 2014-10-08 | 青岛沈源水务科技有限公司 | Secondary water supply equipment control system based on requirements and control method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042478U (en) * | 1989-02-04 | 1989-08-09 | 牟在洙 | Automatic water supply installation with constant pressure and changeable flow rate |
| CN1075764A (en) * | 1992-12-24 | 1993-09-01 | 丹东市农垦给水设备厂 | Computer controlled and frequency adjusted compensative water supply installation |
| JPH0895645A (en) * | 1994-09-29 | 1996-04-12 | Toshiba Corp | Water supply terminal pressure controller |
| CN2246170Y (en) * | 1995-06-02 | 1997-01-29 | 李保忠 | Energy saving jet frequency converting speed control water feeder |
| KR100813181B1 (en) * | 2007-01-19 | 2008-03-17 | 함서동 | A water suppling apparatus for extinguishing a fire without rooftop water tank and air suppling tank |
| CN202416453U (en) * | 2011-12-16 | 2012-09-05 | 安徽禾田电气有限公司 | Water supply double-closed loop constant pressure control system |
-
2011
- 2011-12-16 CN CN2011103623049A patent/CN102444174A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042478U (en) * | 1989-02-04 | 1989-08-09 | 牟在洙 | Automatic water supply installation with constant pressure and changeable flow rate |
| CN1075764A (en) * | 1992-12-24 | 1993-09-01 | 丹东市农垦给水设备厂 | Computer controlled and frequency adjusted compensative water supply installation |
| JPH0895645A (en) * | 1994-09-29 | 1996-04-12 | Toshiba Corp | Water supply terminal pressure controller |
| CN2246170Y (en) * | 1995-06-02 | 1997-01-29 | 李保忠 | Energy saving jet frequency converting speed control water feeder |
| KR100813181B1 (en) * | 2007-01-19 | 2008-03-17 | 함서동 | A water suppling apparatus for extinguishing a fire without rooftop water tank and air suppling tank |
| CN202416453U (en) * | 2011-12-16 | 2012-09-05 | 安徽禾田电气有限公司 | Water supply double-closed loop constant pressure control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088327A (en) * | 2014-06-10 | 2014-10-08 | 青岛沈源水务科技有限公司 | Secondary water supply equipment control system based on requirements and control method thereof |
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Application publication date: 20120509 |