Low-pressure turbine rotor dynamic balance tool, assembly and method

Abstract

The invention provides a low-pressure turbine rotor dynamic balance tool. A semi-groove type barrel is provided with a first open end, a second open end and a notch and is further provided with two fixing surfaces located on two sides of the notch, wherein a first pressing ring is provided with two first fixing end faces, and the two first fixing end faces are fixed to the two fixing surfaces through fasteners respectively; the second pressing ring is provided with two second fixing end faces, the two second fixing end faces are fixed to two fixing surfaces through fasteners respectively, the semi-groove type barrel further provides two mounting positions which are used for being mounted on two bearing bushes of a balancing machine respectively, and the two mounting positions and the first pressing ring are located on the same side relative to the second pressing ring. The invention further provides a low-pressure turbine rotor dynamic balance assembly comprising the low-pressure turbine rotor dynamic balance tool and a low-pressure turbine rotor dynamic balance method using the low-pressure turbine rotor dynamic balance tool. By adopting the low-pressure turbine rotor dynamic balance tool, the low-pressure turbine rotor can be supported for dynamic balance, and an accurate dynamic balance result can be obtained.

Description

technical field [0001] The invention relates to a low-pressure turbine rotor dynamic balance assembly, and more specifically, to a low-pressure turbine rotor dynamic balance tool, and also relates to a low-pressure turbine rotor dynamic balance method. Background technique [0002] The low-pressure turbine rotor is generally composed of two sub-components, the turbine disk assembly and the turbine shaft. The turbine disk assembly can be fixed on the transfer short shaft through threaded fasteners, and the transfer short shaft is then fixed by splines combined with large nuts. On the turbine shaft, the front end of the turbine shaft can be provided with an adapter flange, which is connected to the drive shaft of the balancing machine, and the axial size of the rotor of the low-pressure turbine rotor is different. [0003] The dynamic unbalance of the low-pressure turbine rotor is one of the main factors causing engine vibration. Therefore, the low-pressure turbine rotor must ...

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Problems solved by technology

[0005] However, the inventor believes that the above simply supported scheme does not match the actual working conditions of the low-pressure turbine rotor, and it is usually necessary to take other measures to compensate the dynamic balance result

Moreover, the above-mentioned simply supported scheme often requires the use of bushings of different sizes for low-pressure turbine rotors with different axial dimensions, which is poor in adaptability

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