概述了变频调速泵节能原理，针对高层建筑供水设施改造的实际情况，设计开发了一套射流泵辅助变频调速恒压供水系统。
A building water supply system in which jet-pump-aided and the inverter and PLC is used to realize the constant pressure of the water is inroduced.
介绍了用PLC控制的变频调速恒压供水系统的基本原理，给出了系统的电气线路和PLC程序设计，并在实际中得到了应用。
This article introduces the frequency speed constant pressure water supply system controlled by PLC, presenting its hardware structure, the design of PLC program and its application.
介绍了变频器的控制原理、节能特点，以及恒压供水系统采用变频调速的节能效果。
It also introduces the control principles and energy-saving properties of frequency converter and the results after using it.
通过变频器在恒压供水系统中的应用，阐述了采用交流变频调速控制方案的经济性和优越性。
Through application of frequency converter in constant pressure water supply system, the paper describes the economic feature and advantages of adopting AC frequency conversion speed control method.
本文对MODBUS总线在变频调速控制系统在应用于恒压供水系统进行了探讨。
In this paper, MODBUS bus in VVVF control system applied constant pressure in the water supply system was discussed.
由于变频调速技术和可编程程序控制器的应用灵活方便，在恒压供水系统中亦得到广泛的应用。
As the application of the frequency control technology and programmable logic controller is flexibility, in the constant pressure water supply system they has been widely used.
由于变频调速技术和可编程程序控制器的应用灵活方便，在恒压供水系统中亦得到广泛的应用。
As the application of the frequency control technology and programmable logic controller is flexibility, in the constant pressure water supply system they has been widely used.
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