Patent ID: 8727718
Filing Date: 2014-05-20
Classification: F01D,Y10T

Abstract:
1. A method for mounting a turbine rotor for a gas turbine comprising a compressor area and a turbine area, said turbine area comprising at least two compressor disks ( 2 . 1 - 2 . 5 ) in the compressor area and at least one turbine disk ( 13 . 1 , 13 . 2 ) in the turbine area, a tie rod arrangement for clamping together said compressor disks and turbine disk, said tie rod arrangement comprising at least one tie rod ( 6 ) including a first fastening area ( 7 ), a second fastening area ( 8 ) for clamping at least two said compressor disks between said first fastening area and said second fastening area, and a third fastening area ( 9 ) for clamping said at least one turbine disk, in a gas turbine comprising one of a one-piece compressor housing ( 11 ), a compressor housing ( 11 ) divided in a first plane; a one-piece turbine housing ( 12 ) connected to said compressor housing ( 11 ) and a turbine housing ( 12 ) divided in a second plane different from the first plane; said method comprising the steps of: a) clamping at least two compressor disks ( 2 . 1 - 2 . 5 ) between the first fastening area and the second fastening area by means of the tie rod arrangement to provide a preloading between the first fastening area and the second fastening area; f) arranging the clamped compressor disks in the compressor housing ( 11 ), without having released the preloading; and g) clamping at least one turbine disk ( 13 . 1 , 13 . 2 ) while retaining the preloading, wherein the preloading between the first fastening area and second fastening area is greater than the clamping of the at least one turbine disk.