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在制冷工业用蒸发器的设计过程中,应首先按设计温度、设计压力进行强度及应力校核,然后在最低使用温度(加50℃后,应高于-20℃)和相应的饱和压力下进行低温低应力工况的强度计算及应力校核,以确定不必遵守低温压力容器的相关规定,以达到降低成本、缩短工期、保护用户利益和增强企业竞争力的目的。为低温低应力工况压力容器的设计提供可供借鉴的经验。
In the design process of refrigeration industrial evaporator, the design temperature and design pressure should be used to check the strength and stress first. Then, after the minimum service temperature (above 50 ℃, it should be higher than -20 ℃) and the corresponding saturated pressure To calculate the strength and stress of low temperature and low stress conditions to determine not to comply with the relevant provisions of low temperature pressure vessels in order to achieve the purpose of reducing costs and shorten the construction period to protect the interests of users and enhance their competitiveness. It provides a reference for the design of pressure vessel with low temperature and low stress.