压力容器2017，Vol.34Issue(2)：41-46,6.DOI:10.3969/j.issn.1001-4837.2017.02.006
基于预应力技术立式夹套换热器结构应力分析
Stress Analysis of Vertical Jacket Heat Exchanger Based on Pre-Deformation & Stress Technique
顾付伟 1董金善 1张维1
作者信息
- 1. 南京工业大学 机械与动力工程学院,江苏 南京 211816
- 折叠
摘要
Abstract
As a typical heat exchanger is widely used in industry,waste heat boiler could be destroyed easily when subjecting to high thermal stress.Therefore,designers used to relieve the effect of thermal stress on boiler from the aspects of its structure and manufacturing technology.This paper introduced a structure feature as its sheet was welded by oblate tubes abreast,and presented the prestressed technology to relieve the deformation constraints between this heat exchanger′s main components (oblate tube,heat transfer tube and jacket).Based on the difference of thermal expansion between tubes and jacket tubes,6 kinds of pre-deformation value act on the oblate tube′s stress distribution and tubes′ axial tensile stress were analyzed through ANSYS.The results showed that pre-deformation of 7~9.45 mm can effectively reduce thermal stress and relieve the axial tensile stress of tubes.关键词
立式夹套换热器/预应力换热器/预变形/扁圆管/预紧单元Key words
vertical jacket heat exchanger/prestressed heat exchanger/pre-deformation/oblate tube/pretension element分类
机械制造引用本文复制引用
顾付伟,董金善,张维..基于预应力技术立式夹套换热器结构应力分析[J].压力容器,2017,34(2):41-46,6.
