Linkage self-balancing water lubricated thrust bearing

Abstract

The invention relates to a linkage type self-balancing water-lubricated thrust bearing. The linkage type self-balancing water-lubricated thrust bearing is composed of a limiting structure, a supporting structure, a self-balancing structure, a following structure and a flow channel structure. The self-balancing function is added to the linkage type self-balancing water-lubricated thrust bearing, i.e., the balancing block lap joint structure is added, and the balancing block lap joint structure can be used for adjusting height differences between pads under the circumstance of a certain amount of pre-tightening force. When certain difference values exist between the loads of the thrust pads, the heights of the thrust pads can be adjusted automatically, and thus the fluctuation amplitude of the loads of the thrust pads is restrained within + / -10%, and the operating stability of the water-lubricated thrust bearing is improved. When a thrust disc moves in the axial direction, it is ensured that the thrust pads make contact with the thrust disc all the time, so that the dynamic loads generated when a thrust disc and thrust pads of a traditional water-lubricated thrust bearing are in contact are avoided, the impact on pad surface materials is relieved, and the operating reliability of the water-lubricated thrust bearing is improved. The linkage type self-balancing water-lubricated thrust bearing is suitable for nuclear main pump shielded motors for third-generation nuclear power and can be widely applied to the fields of nuclear power, the chemical industry, ship power and the like.

Description

technical field [0001] The invention relates to a linkage type self-balancing water lubricated thrust bearing. Background technique [0002] In the third-generation nuclear power technology system, the main pump of the nuclear reactor is a shielded electric pump. The shielded electric pump is the integration of the pump and the shielded motor, and the bearing adopts a water-lubricated working method. The thrust bearing is one of the most important parts of the nuclear main pump, and whether its design is reasonable will directly affect the reliable operation of the nuclear main pump. The load capacity and wear life of water-lubricated hydrodynamic sliding bearings are important factors restricting the application of such bearings. Traditional water-lubricated thrust bearings do not have a self-balancing system, and it is difficult to maintain the planes of each thrust pad in the same plane. The load distribution is uneven during operation, which makes the operating paramete...

AI Technical Summary

Problems solved by technology

Traditional water-lubricated thrust bearings do not have a self-balancing system, and it is difficult to maintain the planes of each thrust pad in the same plane. The load distribution is uneven during operation, which makes the operating parameters such as water film thickness, temperature, and wear amount of each thrust pad inconsistent, and the overall bearing does not perform well. The best performance, the vibration increases during long-term operation, the bearing bush is easily damaged, and the reliability is reduced

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