Design method of water lubrication step tile dynamic pressure thrust bearing

Abstract

The invention discloses a design method of a water lubrication step tile dynamic pressure thrust bearing. The design method comprises the following steps of (1) determining an inner diameter and an outer diameter of the thrust bearing according to an operating working condition and an installing size of the thrust bearing; (2) determining the number of thrust tiles according to the inner diameter and the outer diameter of the thrust bearing; (3) determining the shape and the size of a water tank; (4) determining positions and sizes of steps on the surfaces of the thrust tiles; and (5) determining the position of a water inlet. According to the method, aiming at the blank of a water lubrication bearing design, by researching a lubrication model of a common-size step tile dynamic pressure thrust bearing under the water lubrication working condition, and analyzing the influence on the bearing capacity of the bearing and the rigidity of a water film caused by the structure size and the operation working condition of the step tile thrust bearing, the most optimized design method is obtained, the water lubrication bearings with same sizes bear large load and are long in service life.

Description

Technical field: [0001] The invention relates to the technical field of bearings, in particular to a design method of a water-lubricated step shoe dynamic pressure thrust bearing. Background technique: [0002] Dynamic pressure bearings are widely used in ships, pumps, water turbines, steam turbines and other industrial equipment. Due to the high viscosity of oil, it can generate a large dynamic pressure carrying capacity, so dynamic pressure bearings usually use oil as a lubricating medium, but it also consumes A large amount of oil has been produced, and the problem of water environmental pollution caused by lubricating oil leakage is also becoming more and more serious. [0003] As a resource with wide sources, safety and no pollution, water has made water-lubricated bearings become the development trend of bearings in recent years. The theory of oil lubrication is relatively mature, and there are a large number of design charts and formulas to follow in the mechanical d...

AI Technical Summary

Problems solved by technology

However, due to the complexity of the calculation model and limited conditions, most studies have simplified the thrust bearing pads, and simplified the fan-shaped pads into rectangular pads. There is a certain gap between the calculated results and the actual ones. Therefore, it is necessary to focus on the water-lubricated step A more realistic calculation model is established for the pad dynamic pressure thrust bearing, and the optimal design structure of the bearing is obtained considering the cavitation phenomenon of water, so that the stiffness of the water film of the bearing is maximized under the same load

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