Operation Modes Investigation of Cascade Pump Unit Using Refining Hydraulic Network Model

M. Pechenik, S. Burian, I.V. Khudia, M. Pushkar, Vitalii Teriaiev
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引用次数: 1

Abstract

The article considers the electromechanical water supply system of a residential building, the pumping station of which includes two half-power capacity centrifugal pumps connected in parallel. At the same time one pump is adjustable and provides stabilization of pressure in a hydraulic network at the necessary level, the second - not regulated which is switched on at the maximum loads and uses soft start system. For more accurately assess the dynamic and static characteristics of water supply, the features of the daily schedule of water yearly consumption, defined in spring, autumn, winter and summer periods are considered. Using the SimHydraulics library of the MatLab application package, a refining model of the hydraulic network has been developed, which allows to take into account the characteristics of network and design features of its individual elements with a high degree of accuracy. The study of the level of accuracy of pressure stabilization of the water supply system is performed, as well as the results of the analysis of energy characteristics of the electromechanical water supply system with variation of its load level during the day and year. Based on the review of the previous research, the expediency of using cascade pumping unit electromechanical systems for water supply systems of residential buildings was determined. Recommendations for the use of a refining model of the hydro network in the study of the modes of operation of the water supply complex are presented.
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基于精炼水力网络模型的梯级泵机组运行模式研究
本文考虑了某住宅楼的机电供水系统,该系统的泵站包括两台半功率容量的离心泵并联。同时,一个泵是可调节的,并在液压网络中提供必要水平的压力稳定,第二个-不调节,在最大负载时打开并使用软启动系统。为了更准确地评估供水的动态和静态特征,考虑了在春、秋、冬、夏四个时期定义的年用水量每日时间表的特征。利用MatLab应用程序包中的simhydraulic库,开发了液压网络的精化模型,该模型可以高精度地考虑网络的特性和各个元件的设计特点。对供水系统稳压精度水平进行了研究,并对机电供水系统日、年负荷水平变化时的能量特性进行了分析。在回顾前人研究成果的基础上,确定了住宅供水系统采用梯级抽油机机电系统的便利性。在研究供水系统的运行模式时,提出了使用水网精炼模型的建议。
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