Anti-disturbance self-balancing water-lubricated thrust bearing support structure

Abstract

The invention relates to an anti-disturbance self-balancing water-lubricated thrust bearing support structure, which is composed of five structures: a limit structure, a support structure, a self-balance structure, a follower structure and a flow channel structure. The present invention adds a self-balancing function, wherein the balance ring has two major features, one is load equalization, that is, when there is a large difference in the load of each thrust pad, the height of each thrust pad can be automatically adjusted to limit the load fluctuation amplitude to ± Within 10%, the running stability of the water-lubricated thrust bearing is improved; the second is the structural continuity, that is, the balance ring is integrally continuous with the upper and lower balance bodies, which improves the reliability of the water-lubricated thrust bearing. The invention ensures that the thrust pad and the thrust disk always keep in contact when the thrust disk moves axially, avoids the dynamic load when the thrust disk of the traditional water lubricated bearing contacts the thrust pad, and reduces the impact on the tile surface material. The invention is suitable for the water-lubricated thrust bearing of the shielded motor of the high-power nuclear main pump of the third-generation nuclear power, and can be widely used in the fields of nuclear power, national defense, chemical industry, ship power and the like.

Description

technical field [0001] The invention relates to an anti-disturbance self-balancing water-lubricated thrust bearing support structure. Background technique [0002] With the development of third-generation nuclear power technology, the reactor coolant pump (referred to as nuclear main pump) has been upgraded from a shaft-sealed pump to a shielded electric pump. The shielded electric pump is the integration of the pump and the shielded motor, and the bearing adopts water lubrication. 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. T...

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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