非标准文氏管气固两相流阻力特性的研究  

A Study of the Gas-solid Two-phase Flow Resistance Characteristics in a Non-standard Venturi Tube

作　　者：艾卫国[1] 周月桂[2] 徐通模[3] 惠世恩[3] 

机构地区：[1]国家电力公司热工研究院,陕西西安710032 [2]上海交通大学,上海200030 [3]西安交通大学,陕西西安710049

出　　处：《热能动力工程》2000年第6期607-610,共4页Journal of Engineering for Thermal Energy and Power

摘　　要：通过试验测量不同节流比的非标准文丘利管在单相流和不同浓度煤粉流中的压差 ,得到文氏管相应的阻力系数ξ0 和 ξμ,同时计算出阻力比例系数Kj,分析节流比、煤粉浓度、煤种等因素对 ξμ 和Kj影响 ,得出 ξμ、Kj与影响因素的关系 ,并将 ξμ 与m。By way of testing and measuring the pressure difference in a single phase flow and pulverized coal stream of various concentrations inside a non standard Venturi tube with different throttling ratios obtained were the relevant resistance factors ξ 0 and ξμ.of the Venturi tube. Meanwhile, a resistance ratio factor kj may also be calculated. By an analysis of the influence on ξμ and Kj of such factors as throttling ratio, pulverized coal concentration and coal ranks, etc one can determine the relationship between ξμ and Kj on the one hand and the influencing factors on the other. Furthermore, the relationship between ξ on the one hand and m, μ on the other can be fitted into a relational expression.

关 键 词：文氏管 气固两相流 煤粉浓度 阻力系数 

分 类 号：TK11[动力工程及工程热物理—热能工程]