Integrated turbine set based on permanent magnetic and magnetic suspension technologies

Abstract

The invention relates to an integrated turbine set based on permanent magnetic and magnetic suspension technologies. Turbomachinery is high in sealing performance, complex in gear system and large in energy loss. A turbine and a generator (or a motor) of a full-sealing structure are arranged on the same rotary shaft. One end of the rotary shaft is arranged in the turbine to conduct gas expansion (or compression). The other end of the rotary shaft is arranged in the generator (or the motor), a generator rotor is arranged, and a generator stator core and a winding are arranged on the outside of the generator rotor. A magnetic suspension supporting bearing and a magnetic suspension thrust bearing are sequentially arranged at the tail end of the shaft. All components of the generator are arranged in a generator casing. The generator (or the motor) and the turbine keep the same rotation speed and adopt the same casing, shaft-end sealing is not required, and a work medium of the whole turbine set can be absolutely free of leakage. A magnetic suspension bearing achieves non-contact supporting of the rotor, friction loss of the bearing is avoided, and the overall efficiency of the turbine set is improved.

Description

technical field [0001] The invention relates to a turbine, in particular to an integrated turbine unit based on permanent magnet and magnetic levitation technology. Background technique [0002] With the continuous development of turbomachinery (Turbine machinery) technology, turbomachinery has been widely used in modern industry and aerospace fields, especially miniaturized turbines are more and more used, such as natural gas compressors (Natural gas compressor), oil well gas expander (gas expander), micro gas turbine (gas turbine), steam turbine based on ORC technology, etc. Due to different application industries and different working media, the above-mentioned turbomachinery has higher speed requirements and higher sealing requirements. Many working media cannot be leaked due to flammable, explosive, highly toxic, and expensive reasons. [0003] Traditional turbomachinery uses various seals to solve the external leakage of the working medium, such as dry gas seals, mec...

AI Technical Summary

Problems solved by technology

Due to different application industries and different working media, the above turbomachinery requires higher speed and tighter requirements. Many working media cannot be leaked due to flammable, explosive, highly toxic, and expensive.

[0003] Traditional turbomachinery uses various seals to solve the external leakage of the working medium, such as dry gas seals, mechanical seals, carbon ring seals, honeycomb seals, etc. The external supply system of the seals is very complicated, has a limited life, is expensive, and cannot Completely isolate the leakage of working medium

[0004] Most of the existing traditional turbines are driven by ordinary motors, and due to the limitation of their own working principles, the motors cannot directly reach the speed required by the turbine. Generally, it is necessary to solve the speed required by the turbine through gear transmission. The gear system is not only the system Complicated and will bring efficiency reduction and energy loss to the entire turbomachinery

[0005] Existing turbomachinery and generators use contact bearings (such as alloy sliding bearings, ball bearings, etc.), which generally require an external cooling and lubrication system, and the medium of this system may not be the same as the working medium of the turbine. Capacity, even chemical reactions, bearings also increase the power consumption of turbomachinery

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