本文对常、低压储罐,大型低温储罐,压力储罐和其他各种压力容器、压力管道等设备设施进行了简单的介绍,并对在化工设计过程中,呼吸阀、气封系统、紧急泄放阀等安全泄放装置的原理、分类及特点进行了简单的概述。根据各类设备、管道及操作介质的特性,正确选用安全泄放装置在化工设计工作中具有重要意义。 This article briefly introduces the equipment and facilities of normal, low pressure storage tanks, large cryogenic storage tanks, pressure storage tanks and other kinds of pressure vessels and pressure pipes. In the process of chemical design, the respiratory valve, gas sealing system, emergency Relief valve safety relief devices such as the principle, classification and characteristics of a brief overview. According to the characteristics of all kinds of equipment, pipes and operating media, the correct selection of safety relief devices is of great significance in the chemical design work.