Furnace tube spring hanger - with series springs and guide seat rings

摘要

A spring hanger for supporting vertical coils in a hydrocarbon cracking furnace has a tubular vertical casing enclosing >=2 coaxial springs arranged in series. Load is applied to the top of each spring through a seat ring having radial bumpers contacting the casing wall to guide the springs. The springs can be arranged end-to-end or in nested relation. A load indicator is provided on each hanger.