초록 ▼

Means are provided to remove the high turbine rotor in a twin spool gas turbine engine without requiring a major disassembly of the entire engine particularly where the low shaft is “bottled”so that it cannot be removed axially from the engine, which means includes a tool adapted to fit between the

Means are provided to remove the high turbine rotor in a twin spool gas turbine engine without requiring a major disassembly of the entire engine particularly where the low shaft is “bottled”so that it cannot be removed axially from the engine, which means includes a tool adapted to fit between the narrow annular space between the shafts to torsionally couple the low rotor shaft and high rotor coupling nut, such that torquing the low rotor shaft uncouples the high turbine rotor.

대표청구항 ▼

Retractable tool means for removing the high turbine of a gas turbine power plant having a high pressure compressor and turbine interconnected by a high shaft, a low pressure compressor and turbine interconnected by a low shaft coaxially mounted relative to said high shaft, coupling means for connec

Retractable tool means for removing the high turbine of a gas turbine power plant having a high pressure compressor and turbine interconnected by a high shaft, a low pressure compressor and turbine interconnected by a low shaft coaxially mounted relative to said high shaft, coupling means for connecting the low turbine to the low shaft, and additional coupling means including a coupling nut internal of said high shaft, said coupling nut having internal splines, said low shaft having external splines disposed in proximity to but axially spaced from said internal splines, said retractable tool means fitted in an annular groove formed between said high and low shafts, and said retractable tool means having internal and external splines engaging said internal splines and said external splines, whereby the rotation of said low shaft decouples said high turbine. The method of removing a high turbine from its shaft from a twin spool gas turbine engine having coaxial low and high shafts supporting a low turbine and compressor and a high turbine and compressor where the low turbine is ahead thereof so as to prevent access to said high turbine, and where said high turbine is secured to the high shaft by an internal nut mounted in an annular groove formed between said high and low coaxially mounted shafts, comprising the steps of removing the low turbine, inserting a tool engaging the low shaft and the internal nut and rotating the low shaft whereby the internal nut is decoupled and permits the high turbine to be removed.