储气罐（压力容器），又名压缩空气储气罐，是专门用于储存压缩空气的压力容器，主要用于存气缓冲，同时起稳定系统压力的作用，避免空压机频繁加卸载和除掉大部分的液态水。储气罐一般由筒体、封头、法兰、接管、密封元件和支座等零件和部件组成。此外，还配有安全阀、压力表、排污阀等完成不同生产工艺作用的附件。

A gas storage tank (pressure vessel), also known as a compressed air storage tank, is a pressure vessel specifically used to store compressed air. It is mainly used for buffering and stabilizing system pressure, avoiding frequent loading and unloading of the air compressor and removing most of the liquid water. Gas storage tanks are generally composed of parts and components such as cylinder, head, flange, connecting pipe, sealing element, and support. In addition, it is equipped with accessories such as safety valves, pressure gauges, and drain valves to complete different production process functions.