文档介绍：湘潭大学
硕士学位论文
HS100离心机布料器内流场CFD数值模拟及其改进设计
姓名:董伟雄
申请学位级别:硕士
专业:化工过程机械
指导教师:王学群;刘吉普
20060401
摘要

摘要
随着我国能源的短缺现象的日益严峻,纯碱生产行业中的氨碱法纯碱生产工
艺中能耗的“瓶颈”严重影响了纯碱的生产。单位纯碱生产中,重碱水份每降低
1%,就可以节约 3kgf/cm2 饱和中压蒸汽 50kg,同时还可以提高煅烧工序 5%~8%
的生产能力,经济效益相当可观。现在国内纯碱生产厂家引进国外的离心机或者
通过仿制的离心机对纯碱进行二次分离,但是国外的离心机生产厂家对我国纯碱
特性不熟悉,因此离心机的布料器结构设计存在不合理的地方。针对这种现象,
笔者通过对离心机主要部分——传动部分进行仿真研究,然后利用 CFD 软件对卧
式活塞推料离心机的布料器内物料进行数值计算,最后利用计算结果对布料器进
行重新设计,提高了产量。
本文的主要研究内容为:
1、对传动部分进行虚拟装配和动画仿真,可以检测此部分的静态和动态的干
涉,又能够把一些复杂的流程比如液压系统和推料过程进行演示,方便技术人员
掌握。
2、对离心机布料器内物料运动进行数值计算,计算出物料对壁面的动静压,
以及物料在布料器中的速度和轨迹线,为下一步的改进设计提供理论依据。
3、在以上工作的基础上,笔者对布料器的结构参数进行核算,修改不合理的
地方,然后把重新设计的布料器放在国外引进的生产机上进行生产检验。结果表
明,从重新设计的布料器内出来的重碱在达到质量要求的基础上,产量提高了
27%。
关键词:离心机; CFD; 重碱; 改进设计; 动画仿真
I
Abstract

Abstract
With the shortage of energy sources ing severe in our country, production
of soda from ammonia-soda is seriously troubled by the energy consumption in the
production process. When the water content in sodium bicarbonate is reduced by 1%,
2
50kg of 3 kgf/cm saturated medium pressure steam can be economized, and at the
same time, throughput in the calcining procedure can be increased by 5% to 8%, that
is to say, the economic benefit is quite good. These days, the domestic soda
manufacturers use the foreign centrifuges or the imitation ones to make the secondary
separation of soda. Because the foreign centrifuge manufacturers are not familiar with
the characteristics of the soda we use, there are many impractical parts in their
centrifuges. To resolve this problem, with the help of puter simulation, the
author set about a study on the drive part-the most important part of a centrifuge, and
then used the software of CFD to analyze the feed in the drum of the pusher centrifuge.
According to the analysis, the drum was then redesigned to meet the production
standard.
The main research of this paper is:
1. The virtual assembly puter simulation of the drive part, which were