基于图解法的泵旁路调节原理及优化  

The Principle and Optimization of Bypass Control for Pump based on Graphic Method

作　　者：江文豪[1] 岳建华[2] 韦红旗[1] 

机构地区：[1]东南大学能源与环境学院,江苏南京210096 [2]北京国华电力技术研究中心有限公司,北京100069

出　　处：《电站辅机》2010年第1期26-29,37,共5页Power Station Auxiliary Equipment

摘　　要：因外界负荷的变化,泵经常在变工况下运行,所以,需要对泵的流量进行调节。旁路调节作为流量调节的一种方式,主要用于泵的小流量保护以及母管压力受限系统的运行调节等。现采用图解分析的方式,介绍了泵旁路调节的原理和方法,提出了两种调节方案;针对水泵的旁路系统,分别考虑"小流量保护"及"母管压力限制"两种因素,对旁路调节的不同方案进行了研究比较,得到最优运行方案,并结合电厂运行实例进行了分析。Due to the change of external load, pump often runs in different working conditions. The flow of pump shall then be adjusted . As a way of regulating the flow of pump, bypass control is mainly used for protecting the pump with small-flow and regulating the system whose main pipeline pressure is limited. In this article, the theory and approach of bypass control has been elaborated through graphic mode and two solutions been proposed. Besides, in allusion to two factors that include small-flow protection and main-pipeline pressure limitation, different schemes of pass control have been studied in combination with a plant example, and an optimized scheme has finally been obtained.

关 键 词：泵 旁路调节 流量 图解 原理分析 优化 方案 

分 类 号：TH311[机械工程—机械制造及自动化]