基于稳定流场的水力旋流器入料口直径设计

doi:10.12068/j.issn.1005-3026.2021.07.014

东北大学学报（自然科学版） ›› 2021, Vol. 42 ›› Issue (7): 1005-1011.DOI: 10.12068/j.issn.1005-3026.2021.07.014

基于稳定流场的水力旋流器入料口直径设计

崔宝玉¹，马聪玉¹，沈岩柏¹，宋振国^2,3

(1.东北大学资源与土木工程学院，辽宁沈阳110819； 2.矿物加工科学与技术国家重点实验室，北京100160； 3.北京矿冶科技集团有限公司，北京100160)

修回日期:2020-11-11 接受日期:2020-11-11 发布日期:2021-07-16
通讯作者: 崔宝玉
作者简介:崔宝玉(1982-)，男，山东烟台人，东北大学副教授；沈岩柏(1978-)，男，黑龙江密山人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(51874075，51974066)；矿物加工科学与技术国家重点实验室开放基金资助项目(BGRIMM-KJSKL-2019-10).

Design of Inlet Diameter of Hydrocyclone Based on Stable Flow Field

CUI Bao-yu¹， MA Cong-yu¹， SHEN Yan-bai¹， SONG Zhen-guo^2,3

1.School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China; 2.State Key Laboratory of Mineral Processing， Beijing 100160， China; 3.BGRIMM Technology Group， Beijing 100160， China.

Revised:2020-11-11 Accepted:2020-11-11 Published:2021-07-16
Contact: CUI Bao-yu
About author:-
Supported by:
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摘要/Abstract

摘要： 水力旋流器入料口的最优尺寸尚无明确评价标准.基于数值试验方法，考察了入料口直径对流场特性和分离性能的影响，提出了一种基于内部稳定流场的入料口直径设计方法.结果表明，入料口直径的下限可根据能量消耗确定，当入料口直径低于下限时，流体碰撞加剧促使部分压力能转化为内能，外侧自由涡区域呈现出类似强制涡的特性.入料口直径的上限可根据流场稳定性确定，当入料口直径超过上限时，进入的液流将直接撞击在溢流管壁上，导致流场稳定性变差，粗颗粒在沉砂中的分配率减少，分离精度降低.最终确定了入料口直径的最优取值范围为0.18D≤D_i≤0.26D.

关键词: 水力旋流器；入料口直径；优化设计；稳定流场；计算流体力学

Abstract: There are no definite evaluation criteria for the optimum size of inlet diameter of hydrocyclone yet. Effects of inlet diameter on flow field characteristics and separation performance are investigated numerically. A theoretical design method of the inlet diameter based on the inner stable flow field was proposed. The results show that the lower limit of the inlet diameter can be determined based on energy consumption. When the inlet diameter is less than the lower limit， the collision between fluids is more severe， and part of the pressure energy is converted into the internal energy. Consequently， the outer free vortex region presents a characteristic similar to the forced vortex. The upper limit of the inlet diameter can be achieved according to the stable flow field. When the inlet diameter exceeds the upper limit， the feed stream will directly impinge on the vortex finder， causing poor flow field stability. As a result， the recovery of coarse particles in the underflow will decrease sharply and the separation sharpness will also decrease. Finally， the optimal range of the inlet diameter is determined as 0.18D≤D_i≤0.26D.

Key words: hydrocyclone; inlet diameter; optimum design; stable flow field; computational fluid dynamics(CFD)

中图分类号:

TD91

崔宝玉，马聪玉，沈岩柏，宋振国. 基于稳定流场的水力旋流器入料口直径设计[J]. 东北大学学报（自然科学版）, 2021, 42(7): 1005-1011.

CUI Bao-yu， MA Cong-yu， SHEN Yan-bai， SONG Zhen-guo. Design of Inlet Diameter of Hydrocyclone Based on Stable Flow Field[J]. Journal of Northeastern University(Natural Science), 2021, 42(7): 1005-1011.

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基于稳定流场的水力旋流器入料口直径设计

Design of Inlet Diameter of Hydrocyclone Based on Stable Flow Field

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