管内组合转子转动特性实验

doi:10.16085/j.issn.1000-6613.2017-0266

化工进展 ›› 2017, Vol. 36 ›› Issue (10): 3604-3609.DOI: 10.16085/j.issn.1000-6613.2017-0266

管内组合转子转动特性实验

何立臣, 杨卫民, 关昌峰, 阎华, 刘由之

北京化工大学机电工程学院, 北京 100029

收稿日期:2017-02-22 修回日期:2017-05-08 出版日期:2017-10-05 发布日期:2017-10-05
通讯作者: 阎华,讲师,研究方向为节能减排与强化传热技术.
作者简介:何立臣(1988-),男,博士研究生,研究方向为换热设备强化传热.
基金资助:
国家自然科学基金项目（51576012）。

Experimental study on rotational characteristics of assembled rotors

HE Lichen, YANG Weimin, GUAN Changfeng, YAN Hua, LIU Youzhi

College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China

Received:2017-02-22 Revised:2017-05-08 Online:2017-10-05 Published:2017-10-05

摘要/Abstract

摘要： 管内组合转子的转动特性是研究其强化传热及防垢阻垢特性的重要基础。为此，本文搭建转速测定实验台，采用光电式转速测定装置对螺旋两叶片转子、大导程螺旋两叶片转子、小外径螺旋两叶片转子及螺旋三叶片转子在管内不同流量条件下以及不同轴向位置处的转速进行了测量，分析了转子的转动特性。测量结果表明：转子转速是由转子在管内所处轴向位置、管内流量、转子的导程、转子的外径以及转子的叶片数等因素共同决定的；转子转速均随管内流量的增加而增加，而且近似地呈线性变化；转子转速均沿管轴向的深入而递减；转子导程越大，转子转速越低；转子外径越小，转子转速越低；转子叶片数的增多只能在管前端很小的范围内使转速增大。最后，获得了4种转子在管内不同流量条件下以及不同轴向位置处的转速拟合关联式。

关键词: 传热, 组合转子, 转动特性, 拟合关联式

Abstract: Rotational characteristics of assembled rotors in tube are the foundation to study its heat transfer enhancement and fouling-preventing performance. Thus,in this paper, the experiment apparatus was built,and rotational speeds of helical two-blade rotor,large-lead helical two-blade rotor,small-diameter helical two-blade rotor and helical three-blade rotor in different flow rates and different axial positions were measured using photoelectric tachometer to analyze the rotational characteristics of assembled rotors. The results showed that rotational speeds of rotors is determined by the factors of axial position of rotor in tube,flow rate in tube,lead of rotor,diameter of rotor,and blade number of rotor. Rotational speeds of the four types of rotors all increased with the increase of flow rate in tube and varied approximately linearly. Rotational speeds of the four types of rotors all decreased with the increase of axial position of rotor in tube. The larger the lead of rotor is,the lower the rotational speed is. The smaller the diameter of rotor is,the lower the rotational speed is. Rotational speeds of rotors can only be improved at a small range in the front of tube by increasing the blade number of rotors. Lastly, the fitting correlations of rotational speeds of the four types of rotors in different flow rates and different axial positions were acquired.

Key words: heat transfer, assembled rotors, rotational characteristic, fitting correlation

中图分类号:

TK172

何立臣, 杨卫民, 关昌峰, 阎华, 刘由之. 管内组合转子转动特性实验[J]. 化工进展, 2017, 36(10): 3604-3609.

HE Lichen, YANG Weimin, GUAN Changfeng, YAN Hua, LIU Youzhi. Experimental study on rotational characteristics of assembled rotors[J]. Chemical Industry and Engineering Progress, 2017, 36(10): 3604-3609.

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管内组合转子转动特性实验

Experimental study on rotational characteristics of assembled rotors

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