CN103711179A - Water supply control system capable of restraining pressure fluctuation - Google Patents
Water supply control system capable of restraining pressure fluctuation Download PDFInfo
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- CN103711179A CN103711179A CN201210399096.4A CN201210399096A CN103711179A CN 103711179 A CN103711179 A CN 103711179A CN 201210399096 A CN201210399096 A CN 201210399096A CN 103711179 A CN103711179 A CN 103711179A
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- water supply
- pressure
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- frequency converter
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Abstract
The invention provides a water supply control system capable of restraining pressure fluctuation. The water supply control system capable of restraining the pressure fluctuation consists of a PLC (programmable logic controller), a frequency converter, a water pump, a water draining header pipe, a water supply pipe, an air pressure tank, a pressure transmitter and a wire, wherein the PLC is connected with the frequency converter through the wire; the frequency converter is connected with the water pump through the wire; the water pump is connected with the water draining header pipe through the water supply pipe; the water draining header pipe is connected with the air pressure tank through the water supply pipe; the PLC is connected with the pressure transmitter through the wire; and the pressure transmitter is connected with the water draining header pipe through the water supply pipe. The water supply control system capable of restraining the pressure fluctuation has the advantages that constant-pressure water supply is realized with the aid of conditioned restraining on PID (proportion integration differentiation) operation by using the PLC and a buffering effect on the pressure of the water supply pipe by using the air pressure tank, and the purpose of restraining the pressure fluctuation is achieved.
Description
1, technical field
The present invention relates to a kind of control system, specifically a kind of water management system of surge suppressing.
2, background technology
On present society, generally use non-negative pressure water-supply installation and water tank frequency-changing water supply device, this two classes supply equipment is all to using frequency converter as the carrier of realizing constant pressure water supply, the PID adjustment process of frequency converter can produce very large otherness because of the difference of the objective condition of water supply object, the project with a large amount of slow-closing type flushing valves for highrise building (such as office building, hotel, hospital etc.) especially, can not finely realize voltage stabilizing, have the king-sized phenomenon of pressure oscillation.
3, summary of the invention
In view of the deficiency that above-mentioned prior art exists, the invention provides a kind of water management system of surge suppressing, effective surge suppressing, realizes the object of constant pressure water supply.
The technical solution adopted for the present invention to solve the technical problems is: a kind of water management system of surge suppressing is comprised of PLC controller, frequency converter, water pump, outfall sewer, water supply line, air pressure tank, pressure transmitter, wire, PLC controller is connected with frequency converter by wire, frequency converter is connected with water pump by wire, water pump is connected with outfall sewer by water supply line, outfall sewer is connected with air pressure tank by water supply line, PLC controller is connected with pressure transmitter by wire, and pressure transmitter is connected with outfall sewer by water supply line.
The invention has the beneficial effects as follows, by PLC controller, PID computing is carried out that conditionity suppresses and air pressure tank is realized constant pressure water supply to the cushioning effect of water pipe pressure, reach the object of surge suppressing.
4, accompanying drawing explanation
Accompanying drawing 1 is principle assumption diagram of the present invention.
In figure, 1, PLC controller, 2, frequency converter, 3, water pump, 4, outfall sewer, 5, air pressure tank, 6, pressure transmitter, 7, wire, 8, water supply line.
5, the specific embodiment
With regard to the water management system of 1 pair of a kind of surge suppressing of the present invention of accompanying drawing, do following detailed explanation below.
As shown in Figure 1, the water management system of a kind of surge suppressing of the present invention is by PLC controller (1), frequency converter (2), water pump (3), outfall sewer (4), air pressure tank (5), pressure transmitter (6), wire (7), water supply line (8) forms, PLC controller (1) is connected with frequency converter (2) by wire (7), frequency converter (2) is connected with water pump (3) by wire (7), water pump (3) is connected with outfall sewer (4) by water supply line (8), outfall sewer (4) is connected with air pressure tank (5) by water supply line (8), PLC controller (1) is connected with pressure transmitter (6) by wire (7), pressure transmitter (6) is connected with outfall sewer (4) by water supply line (8).
During equipment operation, PLC controller (1) first gathers the pressure data of pressure transmitter (6), compare with the setting pressure of itself, by PID computing, export analog signals to frequency converter (2), frequency converter (2) is exported corresponding frequency according to the analog signals receiving, thereby controls the rotating speed of water pump (3).When the pressure of pressure transmitter (6) and the difference of setting pressure are in normal range (NR), PLC controller (1) carries out normal PID adjusting, when the difference of pressure transmitter (6) and setting pressure is not in normal range (NR), it is larger that PLC controller (1) determines water pressure fluctuation, to carry out PID suppresses to regulate, PLC controller (1) reduces (or rising) setting pressure, slow down the speed that PID regulates, thereby the frequency that makes frequency converter (2) keeps relatively constant, thereby make the rotating speed of water pump (3) relatively steady, the pressure of water supply line (8) fluctuates and reduces up and down, after in pressure returns to normal range (NR), carry out again normal PID adjusting.
When pressure oscillation in water supply line (8) is larger, air pressure tank (5) can suck and the water of discharge section according to the size of pressure, to the pressure oscillation of water supply line (8), play good cushioning effect.After the buffering double action that suppresses adjusting and air pressure tank (8) through PID, the pressure in water supply line (8) maintains near setting pressure, realizes the object of voltage stabilizing.
Claims (1)
1. the water management system of a surge suppressing is comprised of PLC controller, frequency converter, water pump, outfall sewer, water supply line, air pressure tank, pressure transmitter, wire, PLC controller is connected with frequency converter by wire, frequency converter is connected with water pump by wire, water pump is connected with outfall sewer by water supply line, outfall sewer is connected with air pressure tank by water supply line, PLC controller is connected with pressure transmitter by wire, and pressure transmitter is connected with outfall sewer by water supply line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210399096.4A CN103711179A (en) | 2012-10-09 | 2012-10-09 | Water supply control system capable of restraining pressure fluctuation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210399096.4A CN103711179A (en) | 2012-10-09 | 2012-10-09 | Water supply control system capable of restraining pressure fluctuation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103711179A true CN103711179A (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210399096.4A Pending CN103711179A (en) | 2012-10-09 | 2012-10-09 | Water supply control system capable of restraining pressure fluctuation |
Country Status (1)
| Country | Link |
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| CN (1) | CN103711179A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563212A (en) * | 2014-07-22 | 2015-04-29 | 上海大众祥源动力供应有限公司 | Variable-frequency constant-pressure make-up water control system on basis of PI (Proportional-Integral) regulation |
-
2012
- 2012-10-09 CN CN201210399096.4A patent/CN103711179A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104563212A (en) * | 2014-07-22 | 2015-04-29 | 上海大众祥源动力供应有限公司 | Variable-frequency constant-pressure make-up water control system on basis of PI (Proportional-Integral) regulation |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140409 |