针对现有储存液态氮气、氩气、氧气和二氧化碳的压力容器在向外输气时气压不稳定的问题，本文研制了一种新型低温液体储罐，该装置主要由低温液体容器、管线、外汽化器、外增压器和管阀等组成，具有能从周围的空气中提取热量为液体加压和汽化提供能量的功能，解决了压力容器在向外输气时气压不稳定的缺陷。实际应用结果表明，该低温液体储罐安装、使用简便，安全性、耐用性好，外输气压稳定。

In order to solve the current problems of unstable pressure during outward gas transmission from the pressure vessel containing liquid nitrogen, argon, oxygen and carbon dioxide to outside, a new type of cryogenic liquid storing tank was designed and developed in this paper. The tank main consisted of cryogenic liquid containers, pipelines, outside carburetor and external booster and valve connection. The novel cryogenic liquid storing tank could extract heat from the surrounding air and provide energy for pressurizing and vaporizing the liquid so as to make outward gas transmission stable. The practical results showed that the cryogenic liquid storing tank could be installed and used easily with good safety, durability and stable external gas pressure.