Rotor system and control method thereof, gas turbine generator set and control method thereof
A technology for rotors and compressors, which is applied to gas turbine devices, machines/engines, mechanical equipment, etc., and can solve problems such as coupling damage, poor stability of the rotor system, and the inability to use gas-magnetic hybrid thrust bearings for thrust bearings, etc.
Pending Publication Date: 2020-04-07
刘慕华
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Problems solved by technology
If the thrust bearing is arranged between the compressor and the turbine, not only will the center of gravity of the entire rotor system be biased towards the turbine side, resulting in poor stability of the rotor system, but also due to the high temperature experienced by the hot end parts of the turbine during work. Transmitted to the thrust bearing, which makes the thrust bearing cannot adopt aeromagnetic hybrid thrust bearing
If the thrust bearing is placed on the side of the coupling facing the generator, all the axial force of the rotor will act on the coupling, which will easily cause damage to the coupling
Method used
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[0334] Turn on the second magnetic bearings of the third stator and the fourth stator; and / or start an external air source to deliver gas to the second gap through the first static pressure air intake orifice;
[0335] controlling the second thrust plate to move in the axial direction of the rotating shaft under the action of the magnetic force between the third magnetic component and the fourth magnetic component, and / or the pushing action of the gas, so as to The second gap between the second thrust plate and the second magnetic bearing in the third stator and the gap between the second thrust plate and the second magnetic bearing in the fourth stator The difference of the second gap is less than or equal to the predetermined value.
[0336] In the above process, the advantage of the second magnetic bearing being convenient for real-time control is used to actively balance the unbalanced mass of the second thrust disk or the whirl of the second thrust disk and other factors ...
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The invention provides a rotor system and a control method thereof, a gas turbine generator set and a control method thereof. The rotor system comprises a first rotating shaft and a second rotating shaft connected with the first rotating shaft through a coupler, wherein the first rotating shaft is sequentially provided with a turbine, a first radial bearing, a gas compressor and a thrust bearing,the thrust bearing is located on one side of a gas inlet of the gas compressor, and the thrust bearing is a certain distance away from the gas compressor, so that the thrust bearing does not block thegas inlet of the gas compressor; and a second radial bearing, a motor and a third radial bearing are sequentially arranged on the second rotating shaft. In the system, the thrust bearing is arrangedat the cold end of the rotor system, and a gas-magnetic hybrid thrust bearing can serve as the thrust bearing; and the gravity center of the whole rotor system can also be located between the two farthest radial bearings, so that the whole rotor system is stable in structure.
Description
technical field [0001] The invention relates to the technical field of rotor dynamics, in particular to a rotor system and a control method thereof, a gas turbine generator set and a control method thereof. 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 and axial force. In order to limit the radial and axial movement of the rotating shaft, radial bearings and thrust bearings need to be installed in the rotor system. Traditional radial bearings and thrust bearings are common contact bearings. As the rotor speed increases, especially when the rotor s...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F02C3/04F02C7/06F02C6/00F02C7/268
CPCF02C3/04F02C7/06F02C6/00F02C7/268
Inventor 靳普
Owner 刘慕华