Pneumatic dual-rotor-casing multifunctional test bench

Abstract

The invention discloses a pneumatic birotor-casing multifunctional test bench, which comprises a rotor test bench and a pneumatic device, wherein the rotor test bench includes a casing and high and low-pressure rotors arranged in the casing; the low-pressure rotor is composed of two parts, the two parts are connected by adopting a sleeve gear coupling, and the low-pressure rotor is provided with alow-pressure turbine disk with blades and the high-pressure rotor; there is an intermediate bearing between the low-pressure rotor and the high-pressure rotor, the high-pressure rotor is provided with a high-pressure turbine disk with blades, and the wall of the casing is provided with through holes used for installing impact and rubbing devices. The pneumatic device comprises a miniature air compressor and an air storage tank, an outlet pipeline of the air storage tank is connected with an air flow divider, and the air flow divider is divided into two pipelines for controlling the rotating speed and two pipelines for controlling the impact and rubbing. The pneumatic birotor-casing multifunctional test bench can realize various airborne rotor-casing system fault experiments and casing vibration analysis, casing multi-measuring-point signal collection and analysis and the like under multi-point impact and rubbing of a shaft and a disk.

Description

technical field [0001] The invention relates to the technical field of aero-engines, in particular to a pneumatically driven double-rotor multi-functional test bench with a casing for scientific research experiments. Background technique [0002] At present, the rotor test benches of most universities do not include casings, and only simply study the characteristics of the rotor and directly measure the vibration signal of the rotor, ignoring many influencing factors, and the rotor is driven by a motor. In practice, the aeroengine is driven by gas, and its structure is complex, so it is not suitable for disassembly. The vibration signal of the casing is collected to analyze and judge the condition of the rotor system. [0003] Aeroengine vibration has always been an important part that cannot be ignored in engine R&D and design, and this research has become a special subject. The vibration detection of the whole machine of the aero-engine is to install the sensor at the ins...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the rotor test bench in the prior art cannot consider the signal transmission under the condition of the casing, the present invention provides a pneumatic double rotor-casing test bench

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