AIR BYPASS DEVICE AND GAS TURBINE ENGINE CONTAINING AIR BYPASS DEVICE Russian patent published in 2022 - IPC F23R3/26 

FIELD: engine building.

SUBSTANCE: technical solution relates to the field of gas turbine engine building, and it is intended for use in the design of gas turbine engines used both in stationary gas turbine installations and in mobile-based gas turbine installations. A device for air bypass from a cavity of a combustion chamber formed by an outer case and a heat pipe into a turbine contains movable and fixed elements with holes in them for air passage, a drive mechanism of the movable element. The device is a modular structure located between the first nozzle device of the turbine and the combustion chamber, coaxially with the longitudinal axis of the gas turbine engine. The movable element is located along the air flow in front of the fixed element. Holes for the passage of by-pass air in movable and fixed elements are the same in shape in plan and have an adjustable cross-sectional area located in a plane transverse to the longitudinal axis of the engine, and axes of holes are located on coaxial circles of the same diameter and parallel to the longitudinal axis of the device. Supports of the movable element are rollers, and the element itself is pivotally connected to a slider of the drive mechanism, which has the capability of moving along the axis of a guide pin. Edge positions of the slider are adjusted by installing remote rings; the inner cavity of the drive mechanism is sealed along a rod of the slider by means of a seal in a cover of the case of the drive mechanism.

EFFECT: improvement of environmental characteristics, increase in the efficiency of the engine when operating at incomplete power, expansion of the range of stable operation of the combustion chamber, reduction in the cost of fine-tuning, and improvement of the design of the bypass device, reduction in engine repair time.

7 cl, 7 dwg