DOUBLE-FLOW ENGINE Russian patent published in 2015 - IPC F04D29/52 F02C7/04 

FIELD: engines and pumps.

SUBSTANCE: double-flow engine comprises a fan impeller, straightening blades and a low pressure compressor downstream the impeller, and also air flow divider between external and internal circuits of the double-circuit engine. Blades of the inlet guiding device together with the flow divider are installed on the front external circular radial rib of the external housing of the low pressure compressor and fixed by axial bolts with the extended hexagonal heads. Bolts are located in the circular, opened towards the channel of an external cavity loop between front and back circular ribs of the external housing. The back rib is designed with axial holes coaxial to hexagonal heads of bolts. Axial movement of hexagonal bolt head is limited by the internal shelf of the straightening fan blade located downstream. Blades of the inlet guiding device are fixed also in the flow divider with the bolts with countersunk head restricted from axial movement with a front circular rib. Total amount of bolts with hexagonal and with countersunk heads equally to amount of blades of the inlet guiding device of the low pressure compressor.

EFFECT: invention allows to improve reliability of the double-flow gas-turbine engine.

3 dwg