Characteristics of rotor impeller in rotary pulverized-coal classifier with bowed-twisted blades

YAN Shunlin; LI Zhao; TENG Long; DONG Biao

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Characteristics of rotor impeller in rotary pulverized-coal classifier with bowed-twisted blades

Thermal Power Generation Vol. 43, Issue 8, Pages: 75-79(2014)

更新时间：2025-09-28

- Characteristics of rotor impeller in rotary pulverized-coal classifier with bowed-twisted blades
- 作者机构：
  
  华北电力大学能源动力与机械工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK223.25
- Published：2014
- 稿件说明：
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YAN Shunlin, LI Zhao, TENG Long, et al. Characteristics of rotor impeller in rotary pulverized-coal classifier with bowed-twisted blades[J]. Thermal Power Generation, 2014, 43(8): 75-79.
DOI：

YAN Shunlin, LI Zhao, TENG Long, et al. Characteristics of rotor impeller in rotary pulverized-coal classifier with bowed-twisted blades[J]. Thermal Power Generation, 2014, 43(8): 75-79. DOI：

摘要

为提高旋转煤粉分离器的性能

以中速磨煤机直叶片旋转煤粉分离器结构为依据

设计了一种变截面弯扭动叶旋转煤粉分离器。利用CFD软件对该分离器进行了数值模拟

并运用UG NX软件设计了该分离器的参数化几何模型

建立了转子叶轮应力场分析数学模型

得到了转速在70~110r/min时转子叶轮内部应力和应变的分布情况及相关规律

可为旋转煤粉分离器的设计、加工提供指导。

Abstract

In order to improve the performance of rotary pulverized-coal classifier

a new rotary coal classifier with variable cross section and bowed-twisted rotor blades was designed

on the basis of structural features of rotary classifier with straight blades for medium-speed pulverizer.The CFD software was employed to conduct simulation on this new classifier.Moreover

by the UG NX software

the parametric geometric model of this classifier was designed and the stress field of the rotor impeller analysis mathematical model was established.Thus

the rotor impeller internal stress and strain distribution was obtained

when the rotor speed was between 70r/min and 110r/min

so the feasibility of manufacturing was demonstrated.

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