A method and system for suppressing turbulence disturbance of a magnetically suspended natural gas pressure differential generator

CN120426113BActive Publication Date: 2025-08-29NORTHEASTERN UNIV CHINA +1
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202510928364.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-07-07
Publication Date
2025-08-29
Estimated Expiration
2045-07-07

AI Technical Summary

Technical Problem

Natural gas pressure differential generators are prone to strong vibration and turbulence near turbulent disturbance points, resulting in damage to seals and bearings, and even collision between rotors and stator components, gas leakage, and explosions. The existing magnetic levitation bearings are designed in complex and have limited bandwidth, making it difficult to effectively suppress turbulent disturbances.

Method used

Active magnetic levitation bearings and closed-type coupling control valves are used to obtain the impeller tip and volute clearance and rotor vibration information in real time, and an enhancement model is established. The main turbulence disturbance controller and the secondary turbulence disturbance controller are combined to adjust the impeller clearance and flow rate to suppress turbulence disturbance.

Benefits of technology

Effectively suppress turbulent disturbances, improve the working efficiency and stability of natural gas differential pressure generators, avoid mechanical damage and safety risks caused by turbulence, and expand the stable operating range of magnetically suspended natural gas differential pressure generators.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120426113B_ABST
    Figure CN120426113B_ABST
Patent Text Reader

Abstract

The present application proposes a method and system for suppressing turbulence disturbances in a magnetically levitated natural gas pressure differential generator, which belongs to the field of generator technology. The method includes: in normal operating conditions, only the main controller is operating, and the performance of the controller is evaluated using a control performance evaluator based on minimum variance. When the performance of the main turbulence disturbance controller is inferior, a secondary turbulence disturbance controller is introduced. The active magnetic levitation bearing serves as a servo actuator of the main turbulence disturbance controller to control the gap between the impeller tip and the volute. The turbulence disturbance control of the magnetically levitated natural gas pressure differential generator is controlled by changing the flow characteristics inside the magnetically levitated natural gas pressure differential generator. The secondary turbulence disturbance controller uses a closed coupling control valve as an actuator to control the mass flow and pressure rise information between the magnetically levitated natural gas pressure differential generator and the static pressure chamber. The present application expands the range of stable operation of the magnetically levitated natural gas pressure differential generator, can effectively suppress turbulence disturbances, and improve the working efficiency of the natural gas pressure differential generator.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Compressor surge prediction control method based on magnetic suspension axial position control

    CN113339310A

  • Balancing machine special for turbine rotor and balance debugging method

    CN119738092A