Low vibration diaphragm coupling used in high speed and high power working conditions

Abstract

The invention relates to a low vibration diaphragm coupling used in high speed and high power working conditions. The low vibration diaphragm coupling includes semi-couplings, a thin-wall sleeve and so on. Supporting plates, sleeves with splines and the semi-couplings are symmetrically arranged on both ends of the thin-wall sleeve, and the supporting plates, the sleeves with splines and the semi-couplings are successively connected, wherein a core shaft is arranged on the central axis of the thin-wall sleeve, the two ends of the core shaft are correspondingly connected to the centers of the supporting plates on both ends of the thin-wall sleeve, a plurality of disks are installed on the core shaft at intervals, and dampers are arranged between the disks and the inner wall of the thin-wallsleeve; and the thin-wall sleeve, the supporting plates and the sleeves with splines are fastened by bolts, metal diaphragms are arranged on the other ends of the sleeves with splines in a sleeving mode in the circumferential direction, and the outer sides of the metal diaphragms are connected to the corresponding semi-couplings through laminates. The low vibration diaphragm coupling used in the high speed and high power working conditions has high application value for rotor connection design of rotating machinery such as a steam turbine, a turbine, a compressor and an aero-engine. The low vibration diaphragm coupling used in the high speed and high power working conditions has good functions of vibration suppression and vibration reduction, the critical vibration amplitude of the thin-wall sleeve in the diaphragm coupling can be significantly reduced, and the stability of the coupling is improved.

Description

technical field [0001] The invention belongs to the field of shaft coupling design, and in particular relates to a low-vibration diaphragm shaft coupling applied to high-speed and high-power working conditions. Background technique [0002] Before leaving the factory, the high and low pressure rotors of aero-engines need to test the dynamic performance of the rotors such as critical speed, unbalanced response and stability under high speed and high power conditions. During the experiment, the motor is used as the power source. A coupling is used to connect the aero-engine and the electric motor. However, since the coupling has a certain stiffness, connecting with the measured rotor will add additional stiffness to the rotor, which will affect the dynamic characteristics of the rotor system. In order to improve the accuracy of the test, the couplings used in the aero-engine test have the following requirements: 1. The dynamic and static performance of the rotor system itself...

AI Technical Summary

Problems solved by technology

Due to the high rotational speed of the aero-engine, the rotational speed in the test often exceeds the critical rotational speed of the thin-walled sleeve, resulting in severe vibration of the coupling during the critical process, seriously affecting the stability and safety of the rotor system

In order to solve the problem of excessive vibration of the diaphragm coupling during high-speed operation, the present invention proposes a low-vibration diaphragm coupling applied to high-speed and high-power conditions

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