The broken shaft detection system and method uses a detector assembly mounted downstream of a power turbine wheel of a gas turbine engine to detect rearward axial motion of the wheel and thereby a broken shaft event. The detector assembly has a plunger positioned to be axially displaced against a link connected in an electrical circuit. The link may be broken when the plunger is displaced thereby creating an open circuit that may be detected by a detection and test element. The breaking may be communicated to an overspeed circuit that controls a shut off switch that interrupts fuel flow to the engine. The link may be connected to the detection and test element by two pairs of parallels wires to facilitate monitoring of circuit function and to detect failures that are not broken shaft event failures.
申请公布号
WO03093652(A2)
申请公布日期
2003.11.13
申请号
WO2002US36197
申请日期
2002.11.12
申请人
HONEYWELL INTERNATIONAL INC.
发明人
MULERA, TOM, G.;STEVENS, PAUL, M.;JONES, KEVIN, A.;FAYMON, DAVE, K.