Axial small-hole normal-pressure water supply dynamic-static pressure spiral groove thrust bearing

Abstract

The invention discloses an axial small-hole normal-pressure water supply dynamic-static pressure spiral groove thrust bearing. The thrust bearing comprises a thrust pad, small holes, a water outlet, athrust disc and spiral grooves. The thrust pad is provided with the plurality of small holes used for supplying water to the bearing, the surface of the thrust disc is provided with the plurality ofspiral grooves in a spiral line shape, preferably, the small holes are evenly distributed in the circumferential direction with the water outlet in the center of the thrust pad as the center, the diameters of the small holes are the same, and the spiral angles and depths of the spiral grooves are the same. The thrust bearing can provide one-way bearing force, has the advantages of being low in low-speed starting friction torque and sufficient in high-speed water supply, can improve the starting performance of a traditional water lubrication dynamic pressure bearing, and overcomes the problem that the bearing is lack of water easily under the high-speed working condition.

Description

technical field [0001] The invention relates to the technical field of thrust bearings, in particular to a dynamic and static pressure spiral groove thrust bearing with a small axial hole and normal pressure water supply. Background technique [0002] Water-lubricated hydrodynamic spiral groove thrust bearings have technical advantages such as large load capacity, low frictional power consumption, and good dynamic stability, and have broad application prospects in rotating machinery. However, there is unavoidable solid contact between the thrust disc and the thrust pad of the water-lubricated hydrodynamic spiral groove thrust bearing during the start-up phase. With the accumulation of start and stop times, the amount of bearing wear continues to increase, leading to premature failure of the bearing. At the same time, as the speed increases, the centrifugal effect gradually increases, and the problem of the lubricating medium entering the bearing gap is prone to be blocked, ...

AI Technical Summary

Problems solved by technology

With the accumulation of start and stop times, the amount of wear of the bearing increases continuously, leading to premature failure of the bearing

At the same time, as the speed increases, the centrifugal effect gradually increases, and the problem of the lubricating medium entering the bearing gap is prone to be blocked, resulting in the bearing being in a water-poor state

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