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Radial bearings, rotor system and control method of radial bearings

A radial bearing and rotor technology, applied in the field of bearings, can solve the problems of high energy consumption of magnetic bearings, bearing instability, heat generation, etc., and achieve the effect of strong anti-disturbance ability and improved bearing capacity

Pending Publication Date: 2018-11-23
刘慕华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the magnetic bearing is turned on for a long time, there are problems such as excessive energy consumption and heat generation; while the air bearing will generate shock waves when the surface linear velocity is close to or exceeds the speed of sound, which will lead to bearing instability and even catastrophic consequences such as shaft collision
It can be seen that the above two non-contact bearings are not suitable for high-speed gas turbines or gas turbine-generator combined units.

Method used

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  • Radial bearings, rotor system and control method of radial bearings
  • Radial bearings, rotor system and control method of radial bearings
  • Radial bearings, rotor system and control method of radial bearings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0134] An embodiment of the present invention provides a rotor system, including:

[0135] A rotating shaft, the shaft body of which is an integrated structure, and the rotating shaft is arranged horizontally;

[0136] A motor, a compressor and a turbine arranged on the rotating shaft in sequence;

[0137] And, a thrust bearing and at least two radial bearings arranged on the rotating shaft;

[0138] Wherein, the thrust bearing is arranged at a preset position on the side of the turbine close to the compressor, and the preset position is such that the center of gravity of the rotor system is located at the at least two radial bearings The position between the two radial bearings that are farthest apart.

[0139] In the embodiment of the present invention, at least one of the at least two radial bearings is the radial bearing provided in the present application.

[0140] In the embodiment of the present invention, the thrust bearing is a bearing used to limit the movement of...

Embodiment 3

[0156] An embodiment of the present invention provides a rotor system, including:

[0157] A rotating shaft, the shaft body of the rotating shaft is an integrated structure, and the rotating shaft is arranged vertically;

[0158] A motor, a compressor and a turbine arranged on the rotating shaft in sequence;

[0159] And, a thrust bearing and at least two radial bearings arranged on the rotating shaft;

[0160] Wherein, the thrust bearing is arranged at a preset position on the side of the turbine close to the compressor, and the preset position is such that the center of gravity of the rotor system is located at the at least two radial bearings The position between the two radial bearings that are farthest apart.

[0161] In the embodiment of the present invention, the thrust bearing is the thrust bearing provided in this application.

[0162] In the embodiment of the present invention, the thrust bearing is a bearing used to limit the movement of the rotating shaft in the...

Embodiment 4

[0179] An embodiment of the present invention provides a rotor system, including:

[0180] A rotating shaft, the shaft body of the rotating shaft is an integral structure, and the rotating shaft is arranged horizontally or vertically;

[0181] A motor, a compressor, a turbine, a thrust bearing and two radial bearings arranged on the rotating shaft, and the two radial bearings are non-contact bearings;

[0182] And, a first casing and a second casing, the first casing is connected to the second casing;

[0183] Wherein, the motor, the thrust bearing and the two radial bearings are all arranged in the first casing, and the compressor and the turbine are both arranged in the second casing; the The impeller of the compressor and the impeller of the turbine are arranged adjacent to each other in the second casing.

[0184] In the embodiment of the present invention, the thrust bearing is the thrust bearing provided in this application.

[0185] In the embodiment of the present i...

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Abstract

The invention provides radial bearings, a rotor system and a control method of the radial bearings. Each radial bearing comprises a magnetic bearing, wherein the magnetic bearing is arranged on a rotating shaft in a sleeved mode, and a plurality of magnetic parts are arranged on the magnetic bearing in the circumferential direction; the magnetic bearing faces the side wall of the rotating shaft, and the rotating shaft is provided with a dynamic pressure generating groove facing the circumferential surface of the magnetic bearing; and a bearing gap is formed between the magnetic bearing and therotating shaft, and the rotating shaft can move in the radial direction of the rotating shaft under the magnetic action of the magnetic parts. According to the radial bearings, the rotor system and the control method of the radial bearings, bearing clearances and magnetic bearings are arranged in the radial bearings, so that the radial bearings form gas and magnetic hybrid radial bearings, the gas bearings and the magnetic bearings can work cooperatively, so that the dynamic performance and the stability of the radial bearings under a high-speed running state can be improved.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a radial bearing, a rotor system and a control method for the radial bearing. Background technique [0002] A gas turbine mainly includes three major components: a compressor, a combustor, and a turbine. After the air enters the compressor, it is compressed into high-temperature and high-pressure air, and then supplied to the combustion chamber for mixed combustion with fuel, and the high-temperature and high-pressure gas generated expands in the turbine to perform work. When the rotor rotates at high speed, the rotor will be subjected to radial force. In order to limit the radial movement of the rotating shaft, radial bearings need to be installed in the rotor system. Traditional radial bearings are common contact bearings. As the rotor speed increases, especially when the rotor speed exceeds 40,000 revolutions per minute, ordinary contact bearings cannot meet the requirement...

Claims

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Application Information

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IPC IPC(8): F16C32/04F16C32/06
CPCF16C32/0402F16C32/0446F16C32/048F16C32/0614F16C32/0662
Inventor 靳普
Owner 刘慕华
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