數(shù)控專業(yè)畢業(yè)設計外文翻譯--wincc在供熱站恒壓供水監(jiān)控系統(tǒng)中的應用-數(shù)控設計-wenkub
2023-05-19 01:33:11 本頁面
【正文】 nd the other is the constant pressure pump outlet. pressure control. How will the two choices, we have to analyze simple Network pressure on the most disadvantaged constant, the water pipe work by QMAX reduced to Q1, pumps reduce speed, and water characteristic curve of A (unchanged) at the intersection point C, pump characteristic curve downward, work pressure on the most disadvantaged H0. And the pump outlet pressure constant pressure control, Ha unchanged, reduce water consumption by QMAX QI and Ha to pay to point B, water characteristic curve upward A through B, the work most disadvantaged Hb pressure into points. HbH0 lift the poor namely, energy waste, so I chose the most disadvantaged work points for the smallest head pressure control parameters. Formation pressure on the closedloop control system, making the pump speed and PID regulator set pressure match, achieve maximum energysaving effect, but the constant pressure to achieve the purpose of water supply. the converter and put into operation after the missioning of the system to ensure optimum operation of the state means necessary. According to the inverter load inertia size of the start and stop the motor when the time is not the same, Set time is too short to be accelerated when the inverter overcurrent, overvoltage decelerating protection。y system design constant pressure water system 畢業(yè)設計（論文）外文翻譯 ponents .From the water supply system programmable controller,inverter,pressure transmiter,and the constact group on the pump unit and other controller selection of AB ControlLogix includes Logix5550 controller,analog input modules,digital input and output modules and munication analog input modute used to test the water pressure on the export signal,digital input module and valves Kai of AB 1336 Plus and Devi2 ce controller thtough the work for munication. Constant Pressure Water Principle The outlet channel of pressure sensor installation will export water pressure signals are converted to electrical signals, send PLC fuzzy inference operation, the output control signals to the converter, regulating the operation of pump motor speed, until the actual elimination of hydraulic pressure and set the deviation, constant voltage supply. Programmable controller can control pumps Kai stopped. When the system started working, inverter control from start on 1st pump frequency operation. If users increased consumption of the converter output frequency up to 50 Hz,
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