초록 ▼

An apparatus for optimizing blade and sealing slots of a compressor of a gas turbine comprising a rotor including a plurality of axially spaced discs and rotor blades on the discs and a stator casing surrounding the blades and forming clearance slots therewith. The blades and stator casing form a pa

An apparatus for optimizing blade and sealing slots of a compressor of a gas turbine comprising a rotor including a plurality of axially spaced discs and rotor blades on the discs and a stator casing surrounding the blades and forming clearance slots therewith. The blades and stator casing form a path for flow of air in a main stream in which the air is compressed and discharged at a discharge end of the compressor. A seal at the last of the discs opposes outflow of compressed air thereat and forms sealing slots through which leakage air can flow from the main stream. The leakage air is conveyed from the compressor and a portion thereof is diverted as a secondary stream in a direction opposite the main stream of air flow in the compressor, and discharged towards the last rotor disc and at least the next adjacent rotor disc to flow thereon.

대표청구항 ▼

Apparatus for optimizing blade and sealing gaps of a multistage compressor of a gas turbine, said apparatus comprising a rotor having an axis of rotation and including a plurality of axially spaced discs and rotor blades on said discs, each disc including a root portion of greatest mass remote from

Apparatus for optimizing blade and sealing gaps of a multistage compressor of a gas turbine, said apparatus comprising a rotor having an axis of rotation and including a plurality of axially spaced discs and rotor blades on said discs, each disc including a root portion of greatest mass remote from its assorted blade, a stator casing surrounding, said rotor blades and forming clearance gaps therewith, said blades and stator casing forming a path for flow of air in a main stream in which the air is compressed in stages by said blades and discharged from the last stage of the compressor, main compressor sealing means at the last of the discs forming sealing gaps through which leakage air flows from the main stream, means for conveying said leakage air for discharge from the compressor towards the axis of rotation of said rotor, means for diverting a portion of said leakage air from said conveying means, as a secondary stream, in a direction opposite the main stream of air flow in the compressor towards the last rotor disc and at least the next adjacent rotor disc, means for dividing said secondary stream into a plurality of further streams respectively directed directly against said root portions of greatest mass of the last and next to last discs, and means for collecting the air after it has undergone flow on said root portions of greatest mass for discharge from the compressor, said plurality of further streams from said secondary stream causing heating of the root portions of greatest mass whereat the temperature is substantially equalized with the temperature at the periphery of said discs including said root portions of greatest mass.