摘要
系统分析了工程上热力管道L型直角弯自然补偿长臂(L_(1))与短臂(L_(2))之间的相互联系,通过热力管道热膨胀量的计算,提出了长臂长度选取的原则;通过理论计算公式与应力分析软件计算结果之间的对比,分析了在不同温差下满足长臂热位移补偿量的最小短臂臂长。通过由两者的对比结果,可以看出L型直角弯补偿量理论计算公式留有较大的裕量。在选取不同的计算应力与许用应力之间比值下,计算出来的短臂臂长也不一样。工程热力管道设计中,应尽可能选取更长的短臂长度,充分利用热力管道自身长度补偿长臂热位移,从而减少整个热力管道系统所需的补偿长度。
The paper systematically analyzes the interrelationship between the long and short arms of the L-shaped bends for natural compensation in thermal piping engineering.Based on thermal expansion calculations,this paper proposes the principles for selecting long arm lengths.By comparing theoretical formulas with stress analysis software results,it determines the minimum short arm length required to accommodate thermal displacement compensation of the long arm under various temperature differentials.Comparative analysis reveals that theoretical calculations for L-shaped bend compensation provide a significant safety margin.The derived short arm length varies depending on the ratio of calculated stress to allowable stress.In the design of thermal piping engineering,longer short arms should be prioritized to maximize the thermal piping system’s inherent compensation capacity,thereby minimizing the required compensation length throughout the thermal pipeline system.
作者
华一阳
HUA Yiyang(China Nerin Engineering Co.,Ltd.,Nanchang,Jiangxi 330038,China)
出处
《有色冶金设计与研究》
2025年第3期26-29,共4页
Nonferrous Metals Engineering & Research
关键词
热力管道
自然补偿
柔性分析
最小短臂臂长
thermal piping
natural compensation
flexibility analysis
minimum short arm length
作者简介
华一阳(1994-),男,工程师,主要从事管道设计相关工作。
