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目 录
摘要 ·························································· 3 1 轴流式风机概述
1.1轴流式风机的工作原理········································· 1 1.2轴流式风机的基本形式········································· 1 1.3轴流式风机的构造············································· 2
2通风机性能参数
2.1空气动力性能曲线的基本参数 ·································· 4 2.2压力的测量 ·················································· 6 2.3流量的测量··················································· 8 2.4转速的测量··················································· 8 2.5功率的测量··················································· 9
3 通风机空气动力性能的实验室测定
3.1轴流式风机空气动力性能的实验装置····························· 10 3.2轴流式风机的性能曲线分析····································· 10
4 通风机性能测试实验
4.1轴流式风机的性能实验········································· 11 4.2离心式风机的性能实验········································· 16
5 通风机现场试验··············································· 25 总结····························································· 26 参考文献························································ 28
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主要符号
Q - - - - - - - - - - - - - - - - - - - - - - 通风机流量 ( m3/s ) P - - - - - - - - - - - - - - - - - - - - - - 全压 ( N/m2) Pd- - - - - - - - - - - - - - - - - - - - - - 动压 ( N/m2) Pst- - - - - - - - - - - - - - - - - - - - - - 静压 ( N/m2) Nst- - - - - - - - - - - - - - - - - - - - - - 轴功率
? - - - - - - - - - - - - - - - - - - - - - - 全压效率 ?st- - - - - - - - - - - - - - - - - - - - - - 静压效率
D - - - - - - - - - - - - - - - - - - - - - - 风管直径 Pa- - - - - - - - - - - - - - - - - - - - - - 大气压力 ( Pa) A - - - - - - - - - - - - - - - - - - - - - - 风管面积 ( m2)
? - - - - - - - - - - - - - - - - - - - - - - 空气温度 ( K )
?- - - - - - - - - - - - - - - - - - - - -空气密度 ( kg/m3)
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轴流风机的性能测定
摘 要
通风机是电厂中重要的辅机之一，其运行安全性和经济性尤为重要，
通风机性能实验是保证通风机质量和获得通风机性能特性的一项重要工作。所以使用前对通风机性能进行测试是必不可少的。
通风机性能试验，包括空气动力性能试验和噪声性能实验两部分。通风机性能试验的目的，在于通过测试与计算，求得风机在给定转速下的流量、压力、所耗功率、效率、噪声等是否达到设计规定的要求，并绘制其特性曲线。
关键词 ：轴流式通风机、性能参数、性能曲线
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轴流风机的性能测定
