36 AE Detection of Leakage Location in an Ethylene …
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Fig. 36.2 The arrangement of the sensors (upward view)
large end is 8240 mm, and the outer diameter of the small end is 2708 mm. The
material is carbon steel.
36.2.2 Arrangement of Sensors
The arrangement of the sensors is shown in Fig. 36.2 (upward view). Four sensors
are equally distributed on the circumferences of the small end and the middle end
of the conical shell respectively, and eight sensors are evenly distributed on the
circumference of the large end. Sensors on two adjacent circles are staggered.
36.2.3 Loading Mode
The external conical shell is loaded by the hydrostatic test of the heating pipes, and
the loading curve is shown in Fig. 36.3. Hold for 20 min at the highest pressure of
4.0 MPa.