高压聚乙烯反应管自增强残余应力的无损检测  

Nondestructive Measurement of Residual Stress in Autofrettaged Ultrahigh Pressure Polyethylene Tubular Rector

作　　者：刘康林[1] 黄小平 王金娥[3] 夏智富[3] 

机构地区：[1]福州大学 [2]哈尔滨工程大学 [3]中国石油天然气集团公司大庆石化分公司

出　　处：《中国机械工程》2001年第9期983-985,共3页China Mechanical Engineering

基　　金：福建省教委科研基金资助项目 ( K990 2 8) ;福州大学科技发展基金资助项目

摘　　要：针对超高压聚乙烯反应管内径小、壁厚大、内部介质压力为超高压等特点 ,开发出一套管内壁应变片粘贴装置和引线密封装置 ,从而保证了内压达 5 5 0 MPa以上时应变片及引线的密封与绝缘性。基于内壁应变—压力关系曲线与残余应力之间的对应关系 ,成功地测取了反应管内壁残余应力。本方法可推广应用于小管径管道内壁应变和自增强残余应力的测试。To obtain the values of strain and residual stress at inner surface of an ultrahigh pressure polyethylene tubular reactor, a new strain gauge sticking tool and a self-sealing and isulating device for leg wire of strain foil in the tube have been developed. With the help of these devices, strains at the inner surface of a tubular reactor as the inner pressure changes from 0 to 560 MPa are measured, inner surface residual stress of the reactor is obtained. It is shown that the measuring approach in this paper is very effective, and may be applied to the measurements of inner surface strains and residual stresses for other kinds of autofrettaged tubes with small diameter.

关 键 词：超高压聚乙烯管式反应器 自增强 残余应力 密封 无损检测 

分 类 号：TQ052.4[化学工程]