Freezing stopper forming apparatus for liquid piping and method for forming freezing stopper on liquid piping

摘要

【Task】 Provided are a freeze plug forming device for a liquid pipe and a method for forming a freeze plug on a liquid pipe, in which a freeze plug forming device can be easily installed in a pipe and the possibility of leakage of liquefied gas such as liquid nitrogen can be reduced. To do. [Solution] A freezing plug forming apparatus 1 for forming a freezing plug in a pipe 100 through which a liquid flows, comprising a metal container 10 for containing a liquefied gas and a cooling heat medium that is liquid or liquid at room temperature and is made of soft plastic. And a secondary-refrigerant-enclosed bag 30 housed in a sealed bag, the metal container 10 is installed on the outer periphery of the pipe 100 with a space, and the secondary-refrigerant-enclosed bag 30 is placed between the metal container 10 and the pipe 100. Is installed in. [Selection diagram]