Electromagnetic mediating bearing device for dual-rotor and magnetic suspension thin-wall rotor system and control method

CN122106747APending Publication Date: 2026-05-29YANGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YANGZHOU UNIV
Filing Date
2025-12-26
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Traditional intermediate bearings in dual-rotor gas turbine systems suffer from high frictional losses and severe wear, making it difficult to meet the requirements of ultra-high speed conditions. They also have high maintenance costs, affecting system stability and performance.

Method used

An electromagnetic intermediate bearing device and a magnetic levitation thin-walled rotor system are adopted. Friction is eliminated by magnetic levitation support. Combined with a multi-radius concentric needle ring array structure and contact slip ring design, stable signal transmission is achieved. A closed-loop control system is designed for real-time attitude adjustment.

Benefits of technology

It effectively reduces frictional losses, improves system reliability and stability, lowers maintenance costs, enhances the overall performance and service life of the gas turbine, and adapts to ultra-high speed operating conditions.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a kind of electromagnetic intermediate bearing device and magnetic suspension thin-walled rotor system and control method for double rotor, including gas turbine intake fan, thin-walled outer rotor and low-pressure turbine, inner rotor, high-pressure turbine, electromagnetic intermediate bearing device and contact slip ring;Thin-walled outer rotor is suspended by multiple electromagnetic bearings, including electromagnetic intermediate bearing device rotating synchronously with inner rotor and outer ring radial magnetic bearing fixed to shell, axial thrust bearing providing axial positioning, electromagnetic intermediate bearing device is equipped with multiple radius concentric needle ring and contact slip ring needle ring groove inner conductive layer cooperation, to provide independent current and control signal for each actuator.The application proposes a kind of electromagnetic intermediate bearing device and magnetic suspension thin-walled rotor system for double rotor, under extremely severe working conditions such as high speed and high pressure, make high-speed rotor in suspended state, effectively reduce the friction between high-speed rotor and intermediate bearing, improve the stability of system, reduce maintenance cost.
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