PSR波纹板片的热强度分析

提出一种新型紧凑式回热器——一次表面回热器(PSR)的强度设计技术。结合船用ICR燃气轮机一次表面回热器研发，以3．7MW燃气轮机为背景，根据热弹性力学和传热学理论，建立PSR板片热强度分析物理数学模型，并对波纹曲线为椭圆、正弦波和抛物线的3种常见波纹传热板片所受热应力做了对比计算，分析了板片厚度，两侧压差，本身温度及形状对板片热强度的影响。给出基于Von Mise等效应力极值σrmax的板片最小设计厚度δmin，还研究了波纹板片在典型工况下的弹性变形情况。本文工作对PSR的结构设计有重要参考价值：

Thermal Strength Analysis of the Corrugated Plates of Primary Surface Recuperators (PSR)

Proposed is the strength design technology for an innovative compact recuperator, the so-called primary surface recuperator (PSR). In conjunction with the development of a PSR for an intercooled recuperator-based marine gas turbine with a 3.7 MW gas turbine serving as a background unit a physico-mathematical model is set up for analyzing the thermal strength of PSR plates on the basis of thermo-elastic mechanics and heat transfer theory. A contrast calculation was conducted for the thermal stresses being subjected to by three kinds of commonly seen corrugated heat-transfer plates. They feature elliptical, sine wave and parabola curves. An analysis is performed of the impact of plate thickness, pressure difference at two sides, plate temperature and shape on the thermal strength of the plates. The minimum design thickness of the plate based on von Mise equipotent stress limiting value is presented along with a study of the elastic deformation situation under the typical operating condition of the corrugated plates. The work conducted by the authors is of major reference value for the construction design of PSR.