Magnetic bearing centrifugal compressor and controlling method thereof

A technology of centrifugal compressor and control method, which is applied in the direction of compressor, irreversible cycle compressor, pump control, etc. It can solve the problem of inability to adjust the gas leakage and control the size of the axial force, and the inability to adjust the clearance of the labyrinth shaft seal And other issues

Active Publication Date: 2020-05-22
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that since the gap of the labyrinth shaft seal cannot

Method used

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  • Magnetic bearing centrifugal compressor and controlling method thereof
  • Magnetic bearing centrifugal compressor and controlling method thereof
  • Magnetic bearing centrifugal compressor and controlling method thereof

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Embodiment Construction

[0076]The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and examples. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present invention. It should be noted that, in the descriptions of the various embodiments, the descriptions of "upper / upper", "lower / lower", "front end / front" or "rear end / rear", "left" or "right" etc. This formula is described as a baseline, but other possible changes in direction are also included. In addition, the so-called "first", "second", "third", and "fourth" are used to describe various elements, and these elements are not limited by such terms. For the convenience and clarity of illustration, the thickness or size of each element in the drawings is exaggerated or omitted or shown in a rough manner, and the size of each element is not entirely its actual...

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Abstract

The invention provides a magnetic bearing centrifugal compressor which includes a magnetic suspension main shaft, a thrust disc, a front axial bearing, a rear axial bearing, an impeller, and at leastone labyrinth shaft seal. The thrust disc is connected to the magnetic suspension spindle. The rear axial bearing and the thrust disc have a first clearance. The front axial bearing and the thrust disc have a second clearance. The impeller is connected to the maglev main shaft. The labyrinth shaft seal is arranged obliquely with respect to the axial direction of the magnetic suspension main shaft.There is a labyrinth shaft seal clearance between the labyrinth shaft seal and the magnetic suspension main shaft and/or impeller. By controlling the thrust disc axially, a clearance ratio of the first clearance to the second clearance can be varied to adjust the labyrinth-seal clearance. In addition, a controlling method of the magnetic bearing centrifugal compressor is also provided.

Description

technical field [0001] The invention relates to a magnetic suspension centrifugal compressor and a control method thereof. Background technique [0002] The centrifugal compressor works on the gas for the impeller to increase the pressure and speed of the gas, complete the transportation of the gas, and make the gas flow through the compressor of the impeller. When the impeller rotates at high speed, the gas rotates with it. Under the action of centrifugal force, the gas is thrown into the diffuser behind, and a vacuum zone is formed at the impeller. At this time, the fresh gas from the outside enters the impeller. The impeller rotates continuously, and the gas is continuously sucked in and thrown out, thus maintaining a continuous flow of gas. [0003] In recent years, in order to achieve high-speed rotation, the main shaft of the centrifugal compressor is rotatably supported by a magnetic bearing. The main shaft and the bearing are not in contact without frictional heat,...

Claims

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Application Information

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IPC IPC(8): F04D17/10F04D27/00F04D29/053F04D29/056F04D29/10
CPCF04D17/10F04D27/00F04D29/053F04D29/056F04D29/102F04D29/051F04D29/0516F04D29/052F04D29/058F04D29/10F05D2240/51F25B1/04
Inventor 林俊傑鐘震麒刘中哲洪国书
Owner IND TECH RES INST
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