Gas turbine engine

Abstract

A gas turbine engine comprises a hollow rotor including a plurality of rotor segments stacked and coupled together in a direction of its center axis and forming at least one of a compressor and a turbine; and a pipe unit inserted into an inner space of the rotor in the center axis direction. In the gas turbine engine, a weight distribution of the pipe unit within an axial transverse section is set eccentric with respect to the center axis of the rotor. In this way, a gas turbine engine which is high in performance and reliability is provided, in which a pipe provided in an inner space of the rotor to transport a cooling medium or lay out a cable, etc., is prevented from whirling.

1 . A gas turbine engine comprising:
 a hollow rotor including a plurality of rotor segments coupled together in a direction of a center axis of the hollow rotor, to thereby define at least one of a compressor and a turbine; and   a pipe unit inserted into an inner space of the rotor in the center axis direction,   wherein a weight distribution of the pipe unit within an axial transverse section is eccentric with respect to the center axis of the rotor.   
     
     
         2 . The gas turbine engine according to  claim 1 ,
 wherein the pipe unit includes a pipe member and a flange provided on an outer periphery of the pipe member and fitted to an inner peripheral surface of the rotor.   
     
     
         3 . The gas turbine engine according to  claim 2 ,
 wherein a weight distribution of the flange within the axial transverse section is eccentric with respect to the center axis of the rotor.   
     
     
         4 . The gas turbine engine according to  claim 1 ,
 wherein the pipe unit constitutes a passage of a cooling medium for cooling an interior of the gas turbine engine.   
     
     
         5 . The gas turbine engine according to  claim 1 ,
 wherein the pipe unit constitutes a passage of seal air for sealing a bearing supporting the rotor such that the rotor is rotatable.   
     
     
         6 . The gas turbine engine according to  claim 5 ,
 wherein the rotor is a compressor rotor, and the cooling medium or the seal air is compressed air extracted from the compressor.   
     
     
         7 . The gas turbine engine according to  claim 1 ,
 wherein a cable is extended to an inside of the pipe unit.