Leak detection in pipes using acoustic pulse reflectometry

摘要

This paper discusses the measurement of the acoustical properties of tubular systems using pulse reflectometry. The technique involves the injection of a sound pulse into the object under investigation and the recording of the resultant reflections. Analysis of the reflections gives information about the bore profile and input impedance of the object. The effect of small leaks on both of these properties is investigated, leading to a method for detecting the presence of a leak in a general tubular system. For the special case of a cylindrical pipe, the position and size of the leak are also determined.