Patent ID: 6769870
Filing Date: 2004-08-03
Classification: F01D,F02C

Abstract:
Structure for separating high and low pressure turboexpanders of a gas turbine, characterized in that it comprises:a diaphragm (31), positioned coaxially behind a stator channel (14) between a stage (12â€²) of a high pressure turboexpander (12) and a first stage (13â€²) of a low pressure turboexpander (13), having the function of sending flows of cooling air towards hot areas of the high and low pressure turboexpanders (12, 13); a pair of shaped plates (50â€², 50â€³) fixed to the diaphragm (31) and forming a gap (52) into which the cooling air is blown; and a sealing ring (60) supported by the shaped plates (50â€², 50â€³) and designed to isolate the high pressure turboexpanders (12) from the low pressure turboexpanders (13) and to receive and distribute the cooling air obtained from the gap (52).