Method of using radiation heating to restrain vibration of rotor

Abstract

The invention relates to a method of using radiant heat to cause partial thermal bending deformation of a rotor to restrain vibration of the rotor. The method is characterized in that an unbalanced position of the rotor is confirmed firstly, and a partial compressed surface and a partial stretched surface of the unbalanced position of the bent rotor are respectively confirmed; in an operation process of a rotor system, the partial compressed surface of the unbalanced position is heated, the radiant heat is partially absorbed through the surface of the rotating rotor, radiation absorbing paint is coated on the partial compressed surface of the unbalanced position of the rotor through coating technology, and therefore the absorption rate of the radiant heat of the coating partial surface of the rotor is improved; and when the rotor is heated through heat radiation, the temperature of the partial surface provided with the coating is raised, the partial surface provided with the coating and the rotor surface without the coating produce temperature difference, the rotor is deformed, original unbalance of the rotor is offset, and the vibration of the rotor is restrained. The method aims at restraining the vibration of the rotor system, improving operation stability of the system, and overcoming the defects of current vibration restraining technology.

Description

technical field [0001] The invention relates to a method for suppressing rotor vibration, in particular to a method for suppressing rotor vibration by using radiant heat to induce local thermal bending deformation of the rotor. Background technique [0002] The vibration problem of rotating machinery is an important factor affecting its stable operation. Various industries have regulations on the vibration of the rotor system, requiring the rotor vibration to be within a certain range during operation. However, rotating machinery will still generate large vibrations due to various reasons during operation, which will affect its operation stability. [0003] At present, the main method of suppressing vibration is dynamic balance, but even if strict dynamic balance is performed on each rotor component, and the installation is well centered, strong vibration may occur during the operation of the composed system, which will make the previous dynamic balance invalid. In additio...

AI Technical Summary

Problems solved by technology

However, rotating machinery will still generate large vibrations due to various reasons during operation, which will affect its operating stability.

[0003] At present, the main method of suppressing vibration is dynamic balance, but even if strict dynamic balance is performed on each rotor component, and the installation is well centered, strong vibration may still occur during the operation of the composed system, making the previous dynamic balance invalid

In addition, vibration control methods also include electromagnetic bearings, controllable squeeze oil film dampers, piezoelectric regulators, shape memory alloy regulators, etc., but in many cases the vibration control technology is not perfect, such as dampers often fail , serious instability problems occur in the supercritical region of the rotor; the electromagnetic control force is relatively small, and the dynamic characteristics are difficult to control, etc.

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