锤片式饲料粉碎机内气固两相流场压强的测试方法

粉碎机在工作过程中,粉碎室内部是一个复杂的三维流场,针对这种流场的测试,现有的方法很难对多相流场压力分布进行长时间、全方位的准确测量。为此,该文提出一种基于虚拟仪器技术的流场测试方法,根据该方法构建了一套测试系统,涵盖了仪器选型、数据采集与分析的程序设计等环节。以锤片式粉碎机样机为试验对象,对粉碎室内的流场进行多点测量。对采集到的各个测量位置的压强信号做数字信号处理,并做比较分析。结合前期研究成果,通过单相流对比试验以及流场仿真分析,论证了该测试方法及测试系统的可靠性。此外,该方法的提出和测量系统的开发,为课题组今后研究粉碎室内流场的压强分布规律,寻找压强与粉碎机结构参数之间的关系提供了技术支...

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Bibliographic Details
Published in农业工程学报 Vol. 32; no. 11; pp. 90 - 97
Main Author 曹丽英 贺龙 张玉宝 刘云峰 李燕燕
Format Journal Article
LanguageChinese
Published 内蒙古科技大学机械工程学院,包头,014010 2016
Subjects
农业机械
加工
数字滤波器
流场
试验测试
负压
锤片式粉碎机
数字滤波器
agricultural machinery
试验测试
test
hammer mill
negative pressure
digital filter
加工
锤片式粉碎机
流场
processing
flow field
负压
农业机械
Online AccessGet full text
ISSN1002-6819
DOI10.11975/j.issn.1002-6819.2016.11.013

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Summary:粉碎机在工作过程中,粉碎室内部是一个复杂的三维流场,针对这种流场的测试,现有的方法很难对多相流场压力分布进行长时间、全方位的准确测量。为此,该文提出一种基于虚拟仪器技术的流场测试方法,根据该方法构建了一套测试系统,涵盖了仪器选型、数据采集与分析的程序设计等环节。以锤片式粉碎机样机为试验对象,对粉碎室内的流场进行多点测量。对采集到的各个测量位置的压强信号做数字信号处理,并做比较分析。结合前期研究成果,通过单相流对比试验以及流场仿真分析,论证了该测试方法及测试系统的可靠性。此外,该方法的提出和测量系统的开发,为课题组今后研究粉碎室内流场的压强分布规律,寻找压强与粉碎机结构参数之间的关系提供了技术支持,可望为新型粉碎机的优化设计提供理论依据。
Bibliography:11-2047/S
In order to test the flow field of the mill, the project group proposed a new method based on virtual instrument technology, and constructed a set of test system according to the method, which coverd the design of the instrument selection, data acquisition, data analysis and processing. In the program design process, we designed an integrated virtual digital filter using the powerful data and signal analysis tools in Lab VIEW, which covers 6 kinds of commonly used digital filters. Taking a new type of mill prototype as the experimental object, the project group carried out many test experiments on the single air flow field and the air and solid two-phase flow field in the chamber. Firstly, the pressure and velocity of the air flow field in A section were tested by 2 kinds of test methods and the single flow field of the whole chamber was simulated and analyzed. Through the comparison, the result showed that the error was in the 5% and the 3 ones were consistent with each other. Secondly, when the spe
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2016.11.013