Structure for separating the high and low pressure turboexpanders of a gas turbine
AssigneeNuovo Pignone Holding S.p.A.
InventorRoger De Meo
Life of this patent
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Abstract
A structure for separating the high and low pressure turboexpanders of a gas turbine comprises a diaphragm (31) having the function of supplying flows of cooling air, a pair of shaped plates (50′, 50″) fixed to the diaphragm (31) and forming a gap (52) into which is blown cooling air which is drawn from a turbocompressor (11) and is then sent to hot areas of the turboexpanders, and a sealing ring (60) supported by the shaped plates (50′, 50″), designed to isolate the high pressure (12) and low pressure (13) turboexpanders and to receive and distribute the cooling air obtained from the gap (52).
Claims16
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 (12′) of a high pressure turboexpander (12) and a first stage (13′) 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 (50′, 50″) 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 (50′, 50″) 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).
Dependencies are inferred from the claim text.