Permanent magnet axial force adaptive balancing device

Abstract

The invention discloses a permanent magnet axial force adaptive balancing device. The device comprises main components including a seawater desalination and energy recovery integrated machine housing,a pump impeller, a turbine impeller, a pump shaft, a thrust bearing, a long water lubricated sliding bearing and a short water lubricated sliding bearing. Annular permanent magnets with the same polarity are embedded in the turbine impeller and the thrust bearing respectively, and the axial force adaptive balance of the pump impeller and turbine impeller can be achieved through a magnetic force of the same repulsive polarity. According to the axial force adaptive balancing device, a thrust plate does not need to be added to balance an axial force, and the problem of adaptive balance of the axial force of a dual-rotor coaxial system is effectively solved; at the same time, acting loads of the axial thrust on the thrust bearing are effectively reduced, friction losses caused by the rotor system due to addition of the thrust plate are reduced, and the reliability of the rotor system of a seawater desalination and energy recovery integrated machine and the stability and safety of an integrated machine system are improved.

Description

technical field [0001] The invention belongs to the field of machinery, in particular to a permanent magnet axial force self-adaptive balancing device for a seawater desalination energy recovery integrated machine. Background technique [0002] Seawater desalination is an important way for coastal countries around the world to solve the shortage of freshwater resources. With the rapid development of island development, ocean-going ships, drilling platforms and other fields, the demand for small and medium-sized seawater desalination devices has soared. In the field of small and medium seawater desalination, energy recovery has always been an important bottleneck restricting its development, which directly affects the technical level and application promotion of seawater desalination devices. It is urgent to develop new energy recovery technologies and new products to meet market demand. [0003] A difficult problem in the seawater desalination energy recovery integrated mac...

AI Technical Summary

Problems solved by technology

The change of the axial force during the coupling process of the dual-rotor system makes the ordinary thrust bearing unable to meet the adaptive balance of the axial force. At the same time, under this working condition, the thrust bearing wears more seriously, which affects the safety of the energy recovery integrated machine

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