航空发动机 VSV 调节机构运行特性试验台设计及试验研究

Surge phenomenon is one of the common faults in compressor components. The adjusting mechanism of variable stator vane (VSV) is often used to change the angle and prevent the occurrence of surge phenomenon in engineering. To determine the operating characteristics of the adjusting mechanism of VSV and meet the operating charateristics requirements in the operating process, a test rig for the operating characteristics of the VSV mechanism was designed and built based on a certain type of aero-engine. A dedicated verification test of resistive force of the VSV mechanism at different speeds was carried out, and the blade rotation angle data under different tolerance clearance bushing conditions and the adjusting mechanism resistance force data at different speeds were obtained. The test results show that the fluctuation of the blade angle variation curve in descending stroke is more obvious; the higher number of blade stages, the smaller the range of the rotation angle, and the rotation angles of the S0 and S4 stage blades are kept near 30° and 3°, respectively. And the amplitude of driving force decreases and remains relatively stable in descending stroke. The step phenomenon of mechanism resistive force occurs during the ascending and descending strokes of the actuator cylinder. The step phenomenon of S1 stage in descending stroke is more obvious, the resistive force in ascending stroke is about -400 N, and that in the descending stroke can reach -450 N.