High-speed magnetic suspension rotor type axial detection device and centrifugal compressor

A magnetic levitation rotor and detection device technology, which is applied to parts of pumping devices for elastic fluids, mechanical equipment, machines/engines, etc., can solve problems such as critical speed reduction, difficult processing, poor control accuracy, etc., and achieve work The effect of stable state, reduced processing difficulty and improved accuracy

Inactive Publication Date: 2017-01-11
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
View PDF10 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The defects of this structure include: 1. The axial detection ring 4 is stepped along its axial direction, so that the axial detection ring 4 is installed on the magnetic levitation main shaft 1, and the axial detection ring 4 is axially positioned, resulting in the magnetic levitation main shaft The natural frequency of 1 is reduced, the critical speed is reduced, the size of the front bearing rotor assembly is the same as that of the rear bearing rotor assembly, and when the same control strategy is adopted, the stepped structure of the axial detection ring 4 will cause the control acc...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-speed magnetic suspension rotor type axial detection device and centrifugal compressor
  • High-speed magnetic suspension rotor type axial detection device and centrifugal compressor
  • High-speed magnetic suspension rotor type axial detection device and centrifugal compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This preferred embodiment provides a high-speed magnetic levitation rotor axial detection device. like figure 2 As shown, the high-speed magnetic levitation rotor axial detection device includes a magnetic levitation main shaft 1, on which a stepped main shaft shoulder 11 is arranged, and a radial bearing rotor assembly 2 is sleeved on the main shaft shoulder 11. On the shoulder 11 and on the outer side of the radial bearing rotor assembly 2, an axial detection ring 4 and a sensor 3 are sequentially arranged. Wherein, the sensor 3 can be an eddy current sensor; the axial detection ring 4 and the magnetic levitation spindle 1 are made of non-magnetic materials, which are respectively used to isolate the influence of the magnetic field of the motor rotor and the magnetic field of the radial bearing rotor assembly 2 on the probe on the sensor 3; The radial bearing rotor assembly 2 is interference-fitted with the magnetic levitation main shaft 1 .

[0029] In the existin...

Embodiment 2

[0035] This preferred embodiment provides a high-speed maglev rotor axial detection device, the structure of which is basically the same as that of preferred embodiment 1, the difference is that, as image 3 As shown, a cylindrical magnetic isolation sleeve 7 made of non-magnetic material is sleeved on the outer side of the main shaft shoulder 11, and radial bearing rotors are sequentially arranged on the outer side of the magnetic isolation sleeve 7 along the axial direction of the magnetic levitation main shaft 1. Component 2, axial detection ring 4 and sensor 3; there is a gap between the sensor 3 and the magnetic isolation sleeve 7, and a radial detection probe 5 is arranged on the inner wall of the sensor 3 facing the magnetic isolation sleeve 7.

[0036] In this structure, the magnetic levitation main shaft 1 can be made of magnetically permeable material, and the magnetic isolation sleeve 7 can shield the influence of the motor rotor magnetic field on the sensor 3 and th...

Embodiment 3

[0039] This preferred embodiment provides a centrifugal compressor, including the high-speed magnetic levitation rotor axial detection device as described in preferred embodiment 1 or 2, the magnetic levitation main shaft is easy to disassemble in the housing, the disassembly efficiency is high, and the working state of the whole machine is stable .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a high-speed magnetic suspension rotor type axial detection device and a centrifugal compressor and belongs to the technical field of centrifugal compressors and accessories thereof. The high-speed magnetic suspension rotor type axial detection device and the centrifugal compressor are designed for solving the problems that an existing device is inconvenient to assemble and disassemble and the like. The high-speed magnetic suspension rotor type axial detection device comprises a magnetic suspension spindle, a steplike spindle shoulder is arranged on the magnetic suspension spindle, a radial bearing rotor component sleeves the spindle shoulder, and an axial detection ring and a sensor are arranged on the spindle shoulder sequentially and positioned on the outer side of the radial bearing rotor component. The high-speed magnetic suspension rotor type axial detection device and the centrifugal compressor have the advantages that the magnetic suspension spindle can be disassembled from a shell without disassembling the detection ring and the sensor firstly; after the axial detection ring is mounted on the magnetic suspension spindle, a cylindrical grinder can be used for finish grinding of the outer side face of the axial detection ring to guarantee perpendicularity of the detection surface of the axial detection ring and the axis of the magnetic suspension spindle, so that machining difficulty of the axial detection ring is lowered.

Description

technical field [0001] The invention relates to the technical field of centrifugal compressors and accessories thereof, in particular to a high-speed magnetic suspension rotor axial detection device and a centrifugal compressor including the high-speed magnetic suspension rotor axial detection device. Background technique [0002] The high-speed maglev rotor axial detection device is the middle structure in centrifugal compressors and high-speed blowers, such as figure 1 As shown, the high-speed magnetic levitation rotor axial detection device includes a magnetic levitation main shaft 1, on which a step-shaped main shaft shoulder 11 is arranged, and on the main shaft shoulder 11, a radial bearing rotor assembly 2, a sensor 3 and An axial detection ring 4, wherein the sensor 3 is provided with a radial detection probe 5 and an axial detection probe 6 . [0003] The defects of this structure include: 1. The axial detection ring 4 is stepped along its axial direction, so that ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F04D29/053F04D27/00F04D29/62
CPCF04D29/053F04D27/001F04D29/624
Inventor 李广海张小波刘健宁张芳贾金信郭长光魏琼李忠雨闫瑾龚高田思园苏久展张超李欣
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap