Mechanical device for driving adjustable stator blade by servo motor

Abstract

The invention discloses a mechanical device for driving an adjustable stator blade by a servo motor. The mechanical device comprises an outer supporting ring, an inner supporting ring, the adjustablestatic blade between the inner supporting ring and the outer supporting ring, a driving gear, a ring gear, the servo motor for driving the ring gear, and a blade end gear arranged at the end of the adjustable stator blade; the driving gear is arranged on a rotating shaft of the servo motor; an arc-shaped rack engaged with the driving gear is arranged on the outer ring surface of the ring gear; anda driving rack engaged with the blade end gear is arranged on the side surface of the ring gear. According to the device, a complex servo oil pressure adjusting device is omitted, the risk of systemfailure caused by high-pressure hydraulic oil leakage is reduced, and the reliability of an engine is improved; and meanwhile, the angle independent adjustment of the adjustable stator blade of each stage is carried out through the ring gear component, so that the optimization of the performance of the engine can be better realized.

Description

technical field [0001] The invention relates to a servo motor-driven adjustable stator vane mechanical device, which is especially used in the fields of aeroengines and gas turbines. Background technique [0002] At present, the adjustable stator vanes of aero-engines and gas turbines are hydraulically actuated. The hydraulic oil is pressurized by a hydraulic pump, and the hydraulic pump is driven by the main engine through an accessory transmission. The disadvantage of this device is that it needs to design a complex mechanical transmission. The device involves components such as gears, bearings, and lubrication systems. At the same time, high-pressure oil pipes are required to transmit hydraulic oil. Once the oil pipes break or leak, the adjustable stator blades will not be able to rotate, which will affect the safe operation of the engine. [0003] At present, in addition to providing propulsion, the main engine of civil aviation aircraft is also the driving force of the ...

AI Technical Summary

Problems solved by technology

[0014] The adjustable stator vane is an important device of the compressor assembly. By adjusting the outlet angle of the stator vane, the compressor can work more smoothly. At present, the adjustable stator vane driving device of the aero-engine not only needs high-pressure hydraulic oil to drive, but also adopts a relatively complicated The mechanical transmission device makes the system less maintainable

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