Adjustable stator blade linkage adjusting device

Abstract

The invention relates to the aircraft engine blower and compressor adjustable stator blade adjusting structure design, and specifically to an adjustable stator blade linkage adjusting device. The adjusting device comprises a first rocker of which one end is fixedly connected with a shaft neck of one stator blade away from the compressor axis, and the other end is hinged to a linkage ring; a support base, fixed on the linkage ring; a pull rod of which one end is hinged to the support base, wherein the rotation axis of the pull rod is parallel to the axis of the stator blade; a pull rod base, fixed on the compressor, wherein the pull rod is slidably installed on the pull rod base along own axial direction; and a fixer for fixing the relative position between the pull rod and the pull rod base. The pull rod drives the linkage ring, the first rocker is driven and the corresponding stator blade is rotated, so the angle of the stator blade is changed. The structure is simple, the operation is efficient, and the engine development cost is reduced.

Description

technical field [0001] The invention relates to the design of an adjustable stator vane adjustment structure for an aero-engine fan and a compressor, in particular to an adjustable stator vane linkage adjustment device. Background technique [0002] In order to ensure the angle consistency of each blade, the adjustable stator blades of the fan and compressor of the engine are usually designed as an actuator to drive the linkage ring to realize the synchronous movement of the entire row of stator blades; and the actuator needs to communicate with the hydraulic pump and other components through the pipeline. The components are connected and driven by a hydraulic pump, so the space requirement is large, which will make the structural design more difficult. [0003] In order to reduce the design difficulty, the structure design of the actuator and the linkage ring has been canceled in some structural designs, and changed to a simple adjustment block structure, that is, an adjust...

AI Technical Summary

Problems solved by technology

However, there are at least the following problems in the structure of the adjustment block: First, each adjustment block can only adjust one angle, and several sets of adjustment blocks need to be designed to adjust several angles; at the same time, it is impossible to achieve variable angle adjustment without replacing the adjustment block , which affects the test cycle; on the other hand, it is troublesome to change the installation. It is necessary to decompose the adjustment block corresponding to each blade and replace it with a new angle adjustment block, and it is easy to cause the missing replacement of individual blades, which will affect the test results.

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