Gas turbine

Abstract

An improved system for removing particulates from the cooling air in a gas turbine engine (10) has a separating element (60) set axially opposite to the air inlet (20) from the compressor (12) and comprising a circular sleeve fitted to the turbine housing. The cooling airstreams are ducted into the cooling air inlets (54, 55) via a non direct path. Particulates are prevented from blocking the air inlets and are taken into the burn chambers.

Description

technical field

[0001] The invention relates to a gas turbine according to the preamble of claim 1 . Background technique

[0002] Gas turbines and the way they work are generally known. During operation of the gas turbine, cooling air with a cooling pressure level is required to cool the guide blades and rotor blades of the turbine, which cooling air is usually provided at the outlet of the gas turbine compressor or its diffuser and is thus taken up there. Although the pressurized air supplied by the compressor is pre-filtered in the suction housing upstream of the compressor, the filters arranged there are not sufficient to cool the cooling air flowing through the parts of the gas turbine subjected to hot gases as required. clean. Contamination particles carried by the compressor-end air are at risk at least for that part of the compressor-end air that is used as cooling air for turbine cooling. The risk is, in particular, that the cooling air holes required for impinge...

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