Magnetic levitation bearing integrated control device for ship propulsion shafting

Abstract

A magnetic levitation bearing integrated control device for ship propulsion shafting comprises a rotating shaft; a propeller is mounted at one end of the rotating shaft; magnets sleeve the rotating shaft; magnetic levitation radial supporting bearings are positioned outside the magnets and spaced from the magnet; first sensors are mounted on one sides of the external sides of the magnetic levitation radial supporting bearings; a thrust disc is also fixed at the other end of the rotating shaft; magnetic levitation axial thrust bearings are correspondingly mounted on the left and right sides ofthe thrust disc in a spaced manner; second sensors are mounted on the internal sides of the magnetic levitation axial thrust bearings; the magnetic levitation bearing integrated control device for theship propulsion shafting further comprises an electric control system; and the electric control system is correspondingly connected with the first sensors, the magnetic levitation radial supporting bearings, the magnetic levitation axial thrust bearings and the second sensors through circuits. as the two groups of magnetic levitation radial supporting bearings and magnetic levitation axial thrustbearings are mounted on the rotating shaft of the propeller, the magnetic levitation radial supporting bearings and the magnetic levitation axial thrust bearings are mounted in a spaced manner and the bearings and the shaft are not in direct contact with each other, an active control system controls shafting to perform transverse excitation and longitudinal excitation on a hull.

Description

technical field [0001] The invention relates to the technical field of ship propulsion shafting, in particular to a comprehensive control device for magnetic suspension bearings used in ship propulsion shafting. Background technique [0002] With the development of social technology, the requirements for ship vibration and noise performance are getting higher and higher, and the vibration and noise of propulsion shafting is one of the key objects of ship vibration and noise control. The vibration and noise excitation sources of ship propulsion shafting are complex, including propeller unsteady excitation, shaft and bearing friction excitation, etc. The vibration transmission path mostly includes multiple radial support bearings and thrust bearings, and also involves mutual coupling vibration of propeller, shafting, and hull Therefore, the problem of vibration and noise control of ship propulsion shafting has not been effectively resolved. Contents of the invention [0003...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the shortcomings of the above-mentioned existing production technology, the applicant provides a comprehensive control device for magnetic suspension bearings for ship propulsion shafting, which can not only realize the non-contact between the shaft and the bearing, avoid the friction excitation between the shaft and the bearing, but also can adopt The active control system of the magnetic levitation radial support bearing and the magnetic levitation longitudinal thrust bearing controls the lateral excitation and longitudinal excitation of the shaft system to the hull, effectively solving the problem of vibration and noise control of the ship propulsion shaft system

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