An experimental device for studying the morton effect of a cantilever rotor

Abstract

A test device for studying the Morton effect of a cantilever rotor, including a cantilever rotor test system, a rotor dynamic system, and a characteristic parameter measurement system; wherein, the cantilever rotor test system includes a rotor and an oil circuit circulation component, and a main shaft passes through an overhanging end bearing seat and a motor end. The bearing seat is supported, and is covered with an outrigger wheel disc and a number of span inner wheel discs, and is connected with the rotor power system; the oil circuit circulation components include oil tank, metering pump, pressure gauge and connecting pipeline; the outrigger end bearing seat and the motor The structure of the end bearing seat is the same, with oil boxes on both sides and a positioning block at the bottom; the bearing is nested in the bearing seat, the motor end bearing seat is supplied with oil through the oil cup, and the overhanging end bearing seat is supplied with oil through a metering pump and a pressure gauge is arranged to Monitor oil pressure; the characteristic parameter measurement system includes multiple sets of sensors, and the sensor signals are connected to the multi-channel data acquisition instrument through wires. The invention is used to study the dynamic characteristics of a cantilever rotor with a high rotation speed and a long overhanging section under the influence of the Morton effect.

Description

technical field [0001] The invention relates to a test device for studying the Morton effect of a cantilever rotor, which is used for studying the dynamic characteristics of a cantilever rotor with a high rotation speed and a long overhanging section under the influence of the Morton effect. Background technique [0002] Large-scale rotating machinery is the key equipment in national infrastructure and basic industries, and plays an important role directly or indirectly in national life. In recent years, the rotor shafting structure and the corresponding shafting vibration faults have become more and more complex, and with the development of new, high-speed, multi-purpose turbo-generator sets, there have been a variety of high-speed, long-extended cantilevers. rotor. However, with the deepening of research, rotors that meet the design standards, especially cantilever rotors, may also experience rotor instability under stable conditions, and the rotor instability is very sev...

AI Technical Summary

Problems solved by technology

The Morton effect may occur under stable operating conditions, which is a huge safety hazard in the operation of existing rotating equipment

However, for this actual situation, there is no detailed research in China at present. In production, there is a lack of stability analysis of cantilever rotors with long overhangs under the Morton effect, and there is a lack of design criteria for cantilever rotors with high speed and long overhangs.

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