介绍了管壳式换热器换热管断裂时泄放量的基本公式,阐述在不同工况时,安全泄放装置泄放量及最小泄放面积的计算,并通过实例介绍了安全泄放量和泄放面积的计算以及安全阀的选型过程。 This paper introduces the basic formula of the amount of discharge when the heat transfer tube of the shell and tube heat exchanger breaks down and expounds the calculation of the amount of discharge and the minimum discharge area of ​​the safety relief device under different operating conditions. Put the area of ​​the calculation and safety valve selection process.