Inner surface cleaning device for heat exchanger pipe of auxiliary heat exchanger in Canada deuterium uranium reactor facility, has inlet channel formed in area of expansion chamber to suck foreign gas

摘要

The device has a blasting unit (B) with an inlet-sided coupling element (12) for attaching a pressure pipe (10) to a heat exchanger pipe (2), and a suction tube for guiding gas or particle mixture (G/P) to a separator (28). An expansion chamber (16) is formed between output end of the heat exchanger pipe and the separator, where speed of the gas or particle mixture in the expansion chamber is reduced. An inlet channel (20) is formed in the area of the expansion chamber to suck foreign gas (FG). The chamber is made of mechanically resistant material such as ceramic material.