聚乙烯自增强超高压反应器在交变载荷条件下外壁应力与内部残余应力衰减规律的研究  

RESEARCH ON THE ATTENUATION RULES OF EXTERIOR WALL STRESS AND INTERIOR RESIDUAL STRESS OF THE LDPE ULTRAHIGH PRESSURE AUTOFRETTAGED TUBULAR REACTOR UNDER ALTERNATING LOAD

作　　者：韩建宇[1,2] 马小明[1] 曾科峰[1] 

机构地区：[1]华南理工大学工业装备与控制工程学院,广东广州510640 [2]中国石油化工股份有限公司茂名分公司,广东茂名525000

出　　处：《石油化工设备技术》2010年第4期1-3,共3页Petrochemical Equipment Technology

摘　　要：以聚乙烯超高压反应器在工作中自增强残余应力衰减为研究对象,通过对残余应力衰减原因的系统分析,选择了交变载荷使自增强残余应力快速衰减的方式,建立了实验装置,测量记录了自增强残余应力衰减过程中反应器沿着壁厚各层应力的变化数据,通过回归分析,找出了自增强残余应力衰减时超高压反应器外壁应力与筒壁内部各层应力的变化规律。This paper studies the autofrettaged residual stress attenuation of the LDPE ultrahigh pressure tubular reactor.Through a systematic analysis of the reasons for residual stress attenuation,alternating load is chosen to quicken residual stress attenuation.Experimental equipment is set up.Residual stress data of reactor during the process of autofrettaged residual stress attenuation is measured and recorded when doing experiments.The variation law of the outside surface stress of ultrahigh pressure reactor and internal shell residual stress attenuation is found out through regression analysis.

关 键 词：交变载荷 自增强残余应力 衰减规律 研究 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]