公开(公告)号：JPH08105330A

公开(公告)日：1996-04-23

申请号：JP24012695

申请日：1995-09-19

Applicant: ABB MANAGEMENT AG

Inventor： ROOBERUTO MAAMIRIKU ,  RENE BUERUHIRI

IPC: F01D5/06 ,  F01D5/08 ,  F01D11/06 ,  F02C7/18 ,  F02C7/28

Abstract: PROBLEM TO BE SOLVED: To reduce axial thrust, improve the cooling efficiency of blades and disks and contrive uniform temperature distribution in axial-flow gas turbines by disposing a suction device for removing leakage air and a portion of cooling air in the area of a drum labyrinth. SOLUTION: A main portion of cooling air to a rotor 3 is led into a wheel- side chamber 19 via lines 22 and swirl nozzles 23. A major portion of the swirling cooling air is introduced into a cooling duct 24 in the rotor 3, while a minor portion thereof is introduced into a gas duct in a turbine 1 defined between a turbine disk and a disk cover. Another swirl nozzle 23 spaced less radially from the principal turbine axis than the above swirl nozzles 23 guides separate cooling air toward the wheel-side chamber 19. The separate cooling air flows along an annular duct 20 from the opposite end of a compressor 10 until it is sucked, along with a leakage air mass flow trapped after a rearmost moving blade 11, by suction devices 25 disposed in the area of a drum labyrinth 21.

公开(公告)号：JPH08210106A

公开(公告)日：1996-08-20

申请号：JP30625195

申请日：1995-11-24

Applicant: ABB MANAGEMENT AG

Inventor： ROOBERUTO MAAMIRIKU ,  FURANSOWA MEINAARU ,  ROJIE SHIYUUTE

IPC: F01D11/08 ,  F01D11/18 ,  F01D25/24 ,  F02C7/28 ,  F04D29/16 ,  F04D29/58

Abstract: PROBLEM TO BE SOLVED: To enhance the pump performance limit of a compressor and enhance the efficiency of the compressor, with a simple system by forming a radial gap between a rotary blade of a rotor of an axial flow compressor for receiving loads of high pressure and high temperature of a gas turbine and a guide blade support body of a stator, in a small size, and constant. SOLUTION: Hollow spaces 9, 10, 11 in which a heat insulating material 15 is filled are formed on a guide blade 4 structure part of a stator, thermal behavior of the guide blade structural part is suppress to a level corresponding to thermal behavior of a rotor.