循环水管道双金属温度计保护套管断裂原因分析  

CAUSE ANALYSIS ON THE FRACTURE OF THE BIMETAL THERMOMETER PROTECTION SLEEVE ON CIRCULATING WATER PIPE

作　　者：李建宏[1] 雷俊良[1] 周扬[1] 

机构地区：[1]中国石油独山子石化公司,新疆克拉玛依833600

出　　处：《石油化工设备技术》2013年第5期64-66,9,共3页Petrochemical Equipment Technology

摘　　要：某循环水管道双金属温度计保护套管短期使用后即发生了断裂,通过宏观、断口检测及计算等方法进行断裂原因分析,结果表明保护套管断裂主要原因是由于管道中两相流的作用,引起套管共振,产生超高周疲劳断裂,并提出了套管安装使用的建议。After having been used for a short period,fracture occurred on the protection sleeve of bimetal thermometer of a circulating water line.Through analyzing the fracture by macro,fracture surface test and calculation,it is found out that the fracture was mainly caused by the effect of two-phase flow in the line which led to sleeve resonance and consequently,ultra-high cycle fatigue fracture occurred.This paper then puts forward some suggestions for installation and use of the sleeve.

关 键 词：温度计保护套管 两相流 共振 超高周疲劳 

分 类 号：TH811[机械工程—仪器科学与技术]