流体机械2023，Vol.51Issue(12)：9-15,7.DOI:10.3969/j.issn.1005-0329.2023.12.002
卧式螺旋卸料沉降离心机螺旋空心轴内表面磨损的研究
Study of the erosion phenomenon on the inner surface of the spiral hollow shaft of decanter centrifuge
摘要
Abstract
The effect of micro-convex and micro-concave defects on the inner surface of the spiral hollow shaft on wall wear was investigated through tests and numerical simulations for eccentricity,vibration and even material leakage due to wear of the spiral hollow shaft in decanter centrifuges.The results show that the erosion area of the microconvex location is mainly distributed at the bottom of its windward side and wall surface near the feed end,and the erosion rate at the microconvex location is high at both ends and low in the middle in its axial position,and the erosion rate near the feed end is higher,and the erosion rate is positively correlated with the throughput.For example,the peak erosion rate at the micro-convex location increases from 6.20×10-4 kg/(m2·s)to 1.63×10-3 kg/(m2·s)when the feed flow rate increases from 1.37 m3/h to 2.74 m3/h.The erosion area of the concave defect is mainly distributed at its lee side,and peak erosion rate increases with increasing defect diameter.If the defect diameter increases from 1 mm to 2 mm,the peak erosion rate at the defect increases from 3.77×10-4 kg/(m2·s)to 6.02×10-4 kg/(m2·s)and there is an obvious erosion concentration phenomenon at the concave defect.The results of the study can provide a basis for the design of anti-friction spiral hollow shafts.关键词
卧式螺旋卸料沉降离心机/螺旋空心轴/缺陷/壁面磨损/数值模拟Key words
decanter centrifuge/spiral hollow shaft/defects/wall erosion/numerical simulation分类
机械制造引用本文复制引用
袁惠新,王伟鹏,付双成,戴如昊,周发戚..卧式螺旋卸料沉降离心机螺旋空心轴内表面磨损的研究[J].流体机械,2023,51(12):9-15,7.基金项目
国家自然科学基金项目(21676031) （21676031）
江苏省高校自然科学研究项目(19KJB530003) （19KJB530003）
