Water-lubricated tilting pad thrust bearing

Abstract

The invention relates to the technical field of thrust bearings, in particular to a water-lubricated tilting-pad thrust bearing. The water-lubricated tilting-pad thrust bearing comprises a bearing body, a radial assembly and thrust assemblies. The bearing body is arranged in a circular ring shape, multiple circular holes are formed in the outer wall of the bearing body along the circumference, andthe radial assembly is arranged in the bearing body, and the top and the bottom of the radial assembly are attached to the top and the bottom of the bearing body correspondingly. The number of the thrust assemblies is two sets, and the two sets of thrust assemblies are the same in structure and are symmetrically installed at the two ends of the radial assembly. The bearing overcomes the radial and thrust combined compensation function, radial and thrust pad blocks are of point supporting movable structures, self-adaptive transient adjustment is conducted according to the working conditions, the working condition requirements are met, radial and thrust pads are of oil spraying lubrication structures, temperature rise of the bearing is reduced through elastic metal plastic, and the strengthof the bearing is improved; and meanwhile, a lubricating medium can adopt water lubrication, the use cost is reduced, the oil mixing state is reduced, cold oil directly enters the lubricating surface, and temperature rise and power consumption are reduced.

Description

technical field [0001] The invention relates to the technical field of thrust bearings, in particular to a water-lubricated tilting pad thrust bearing. Background technique [0002] Large water turbines and water pumps generally use tilting pad type thrust (radial and thrust) bearings. The radial bearing is mainly used to support the rotor, providing support rigidity, bearing radial load, damping and absorbing vibration, and ensuring the stability and running accuracy of the rotor. Function; the thrust bearing is mainly to bear the axial load of the rotor and the "limiting" function. The thrust surface of the thrust bearing constitutes the "relative dead point" of the entire shafting of the gas turbine. The maximum axial load to be borne can reach more than 200KN, and the specific pressure It can reach 2.5MPa, and the speed can reach 5000 to 12000r / min, which belongs to the working conditions of high speed and heavy load. The performance characteristics of the tilting pad b...

AI Technical Summary

Problems solved by technology

[0003] However, for long-rotor units such as water turbines and large water pumps, ordinary fixed bearings cannot meet high-speed rotation conditions, and conventional Babbitt bearing materials cannot withstand high-speed and high-specific pressure conditions. Conventional tilting pad radial thrust bearings The performance of self-adaptive centering of radial pads cannot be realized, and it is sensitive to the misalignment and deflection of the rotor, which will easily cause the temperature rise of the bearing pad, large frictional power consumption, abnormal vibration, and ordinary fixed shafts cannot meet the requirements of high-speed rotating work. situation, resulting in increased processing difficulty

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