Dual-flow-pass fan guide vane adjusting mechanism

Abstract

The invention relates to the technical field of aeroturbine engines, in particular to a dual-flow-pass fan guide vane adjusting mechanism. The mechanism is characterized by comprising an acting barrelarranged on an outer casing of an engine, an acting ring is connected with the acting barrel, the acting ring is connected with a dual-flow-pass fan guide vane rotating shaft through a connection rodmechanism, the dual-flow-pass fan guide vane rotating shaft is arranged on the outer casing, dual-flow-pass fan guide vanes are installed on the dual-flow-pass fan guide vane rotating shaft, and theacting barrel drives the acting ring to drive the connection rod mechanism to enable the dual-flow-pass fan guide vane rotating shaft to be rotated so as to rotate the dual-flow-pass fan guide vanes.The fan guide vanes are placed in a regular polygon inner casing annular cavity, interference produced between the fan guide vanes and the inner and outer casings in large-angle range adjustment is avoided, a flow pass can be completely blocked and closed in the 90-degree position, and airflow loss caused by gaps is reduced.

Description

technical field [0001] The invention relates to the technical field of aviation turbine engines, in particular to a dual-channel fan guide vane adjustment mechanism. Background technique [0002] With the continuous advancement of aero-engine technology, the concept of variable-cycle engines has been proposed and has received a high degree of attention. Compared with traditional turbine engines, it has greater advantages and is considered to be an important development direction of aero-engines in the future. Among the various variable cycle engine schemes that have been proposed, the dual-channel fan is one of the important components. The dual-channel fan adjustment mechanism needs to continuously adjust the fan guide vane between 0° and 90° to meet the requirements of the wide flight speed range of the variable cycle engine. When the fan guide vane is at 90°, the guide vane will be adjusted The runners are completely closed, thereby changing the thermal cycle of the engi...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the patents and research on the dual-channel fan components focus on the dual-channel fan itself, and there is no public information on the related research on the dual-channel fan adjustment mechanism; The adjustment angle range has certain limitations and cannot be fully applied to dual-channel fans. The guide vane adjustment technology for engine compression components in the prior art cannot meet the requirements for large-angle range adjustment of guide vanes for dual-channel fans.

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