GAS-TURBINE INSTALLATION Russian patent published in 2010 - IPC F02K3/02 F04D27/02 

FIELD: machine building.

SUBSTANCE: gas-turbine installation consists of two-shaft double-circuit engine with low pressure compressor and high pressure compressor separated one from another with dividing case; engine is equipped with flow divider and channel of external circuit from external side of high pressure compressor. Perforated aprons are installed at the output from the low pressure compressor between radial poles of the dividing case. The perforated aprons with the flow divider of the dividing case form an inlet section into the channel of the external circuit, while they form blind cavities from the side of the low pressure compressor with an external wall of the dividing case; at the inlet the cavities communicate with a running section of the dividing case via openings of the perforated apron, at outlets the cavities are connected with the channel of the external circuit. Valves for release of air from the channel of the external circuit into atmosphere are arranged on the external wall of the external circuit channel. Ratio of flow area of openings of the perforated apron to area of the inlet section into the channel of the external circuit equals to 0.1…2.

EFFECT: raised reliability due to uniform distribution of air flow at inlet to high pressure compressor and prevention of surge of low pressure compressor.

3 dwg