Correction device for suspension rotor

Abstract

The invention discloses a correction device for a suspension rotor, which comprises a corrector and a reflector, the corrector is arranged at the bottom of a test bed, and the reflector is arranged on a plane below the corrector; and the corrector is of a hollow structure with an open top end, and small holes are formed in the bottom of the corrector. The vertical degree of the rotor is judged by observing the relative position of the tail end of the rotor and the bottom hole of the correction device through the reflecting mirror, the structure is simple, operation is convenient, the reflecting mirror is utilized, bending upwards for observation is not needed, and the testing efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of rotating machinery, and in particular relates to a correction device for a suspended rotor. Background technique [0002] Rotating machinery refers to machines that mainly rely on rotating actions to complete specific functions. Typical rotating machinery includes steam turbines, pumps, centrifugal compressors, and aerospace engines. One of the centrifugal rotors runs at high speed under the drive of a motor. The dynamics research of the rotor It is very important, and the moment of inertia is an essential parameter in the study of rotor dynamics. However, the complex rotor structure is affected by factors such as processing, assembly and secondary molding, and its precise moment of inertia cannot be obtained theoretically. Hang it up, and make the rotor rotate and twist slightly under the action of gravity through excitation, and then measure the parameters such as the rotation period and swing radius t...

AI Technical Summary

Problems solved by technology

However, the complex rotor structure is affected by factors such as processing, assembly and secondary molding, and its precise moment of inertia cannot be obtained theoretically. Hang it up, and make the rotor rotate and twist slightly under the action of gravity through excitation, and then measure the parameters such as the rotation period and swing radius to obtain the moment of inertia of the rotor

[0003] However, the vertical lifting method of the rotor is to hang the rotor freely by several slings. In actual operation, it is difficult to ensure that the rotor is completely vertical, which will affect the actual measurement results. Once the rotor is axially eccentric, the slight torsion measurement will It has a great influence on the moment of inertia and deviates from the true value. Therefore, it is necessary to design a correction device to accurately correct whether the rotor reaches the plumb state, so as to ensure that the measurement data of the final moment of inertia of the rotor is true and reliable.

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