Magnetic levitation compressor structure

Abstract

The invention discloses a magnetic levitation compressor structure. A stator is fixed in a machine shell. A rotor is arranged in the stator in a penetrating mode. The rotor is rotationally supported in the machine shell through a magnetic bearing. A sensor holder is fixed on the magnetic bearing. An axial displacement sensor is arranged on the sensor holder. An impeller is fixedly connected with the rotor. A volute is fixed on the machine shell. The impeller is arranged in the volute. A balance disk, an impeller clearance adjustment ring, and an axial clearance adjustment ring are all arrangedon the rotor in a sleeving mode. The impeller clearance adjustment ring, the balance disk, and the axial clearance adjustment ring are all axially positioned on the step surface of the rotor throughthe impeller. An axial test clearance is formed between the right end surface of the balance disk and the left end surface of the sensor holder. A sealing ring is fixed on the volute. A ventilation clearance is formed between the sealing ring and the balance disk. The magnetic levitation compressor structure is impact, convenient to arrange, the clearance between the balance disk and the axial displacement sensor and the clearance between the impeller and the volute are easy to adjust, and sealing effects are good.

Description

Technical field: [0001] The invention relates to a magnetic levitation compressor structure. Background technique: [0002] The impeller pressure ratio of the compressor is generally relatively high, which will cause a large axial force on the compressor rotor. In order to reduce the load on the thrust bearing, a balance plate structure is generally installed on the rotor to balance part of the axial force. . For the magnetic levitation compressor, a balance disc is also set for the consideration of reducing the axial magnetic bearing load. [0003] After the impeller and balance disc in the existing magnetic levitation compressor are fixed, when it is necessary to adjust the detection gap of the axial displacement sensor and the impeller gap, the balance disc and impeller on the rotor need to be removed, and then go to the lathe for processing to achieve the required gap After installation is required, such repeated size adjustments will cause the rotor to be positioned a...

AI Technical Summary

Problems solved by technology

[0003] After the impeller and balance disc in the existing magnetic levitation compressor are fixed, when it is necessary to adjust the detection gap of the axial displacement sensor and the impeller gap, the balance disc and impeller on the rotor need to be removed, and then go to the lathe for processing to achieve the required gap After installation is required, such repeated size adjustments will cause the rotor to be positioned as a reference, and the shaft sleeve and sealing ring on the rotor will have axial displacement, and there are too many parts on the rotor, and each part has its own tolerance size. All assembled on the rotor, there will be a certain cumulative tolerance, and the more parts assembled on the rotor, the more complicated the processing process will be, the parts may need lathe processing, grinding machine processing, and fitter, the longer the processing time , the number of parts increases, and the cost of materials increases

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