GAS-TURBINE ENGINE COMPRESSOR Russian patent published in 2004 - IPC

FIELD: mechanical engineering; gas-turbine engines of aircraft and ground application.

SUBSTANCE: proposed compressor of gas-turbine engine with air bypass valves has outer housing and inner housing with holes to bypass air from series-mounted guide-vane assemblies, and flanges dividing air space between outer and inner housings. Middle flange is instammed telescopically relative to inner housing and is provided with zigzag radial wall. According to invention, zigzag radial wall separates successively holes with bypass valve from each other in outer housing at h/d=0.5-2; h₁/d₁=1-2.5;F/F_h=1,1-2; F₁/F_{h 1}-2, where h is minimum height of air space between middle flange and inner housing; h₁ is minimum height of air space between middle flange and outer housing; d is diameter of air bypass holes in inner housing in first guide-vane assembly in direction of air flow; d₁ is diameter of air bypass holes in inner housing in second guide-vane assembly in direction of air flow; F_h is summary area of holes, diameter d; F_h1 is summary area of holes, diameter d₁; F is summary area of air bypass valves of guide-vane assembly first in direction of air flow; F₁ is summary area of air bypass valves of guide-vanes assembly second in direction of air flow.

EFFECT: increased economy and improved reliability of compressor owing to use of air bypass system to regulate radial clearances between stator and rotor.

3 dwg