Thrust bearing of submersible motor

Abstract

The present invention discloses a submersible motor thrust bearing used in the well submersible motor. It includes circular disk bearing seat with positioning lug and bottom surface centre recessed ball face and axle bush formed from several independent sectorial bearing slide blocks. It also includes bearing disk fixed on the disk bearing seat, said bearing disk has central hole, spacing column,slide block positioning column and spherical crown convex hull. Two sides of sectional bearing slide block are smooth, its undersurface is equipped with a semi-cylindrical blind hole matched with positioning column, and is placed on the convex hull by means of positioning column and spacing column, and its being in movable and flexible state.

Description

technical field [0001] The thrust bearing of the present invention relates to a thrust bearing used in a submersible motor, especially a thrust bearing used in a submersible motor for wells. Background technique [0002] At present, the thrust bearing used for well submersible motors mainly includes a disc bearing seat with positioning ears and a bearing bush arranged on the plane of the disc bearing seat. The form of independent fan-shaped bearing sliders. The fan-shaped bearing sliders are evenly distributed on the disc bearing seat according to the circumference. There is a concave spherical surface in the center of the bottom surface of the disc bearing seat. The concave spherical surface is supported by a spherical top column to adjust the bearing pressure and cooperate with the sector. The bearing slider is self-aligning, and the above-mentioned fan-shaped bearing sliders are connected into a whole form, which has poor centering ability and is easy to wear, and the con...

AI Technical Summary

Problems solved by technology

[0002] At present, the thrust bearing used for well submersible motors mainly includes a disc bearing seat with positioning ears and a bearing bush arranged on the plane of the disc bearing seat. The form of independent fan-shaped bearing sliders. The fan-shaped bearing sliders are evenly distributed on the disc bearing seat according to the circumference. There is a concave spherical surface in the center of the bottom surface of the disc bearing seat. The concave spherical surface is supported by a spherical top column to adjust the bearing pressure and cooperate with the sector. The bearing slider is self-aligning, and the above-mentioned fan-shaped bearing sliders are connected into a whole form, which has poor centering ability and is easy to wear, and the connection between the fan-shaped bearing sliders is weak, and the pressure-bearing capacity is poor. However, multiple independent fan-shaped bearing sliders The composition form has better centering ability and is not easy to wear, but because of this structure, the fan-shaped bearing slider is hidden in the concave ring groove on the plane of the disc bearing seat, and the back of the fan-shaped bearing slider is cast with a central support column and positioning ribs on both sides. , and there is a cavity between the central support column and the positioning ribs on both sides. After the fan-shaped bearing slider is hidden in the concave ring groove, it can swing sideways according to the central support column as the center axis. The height of the positioning ribs on both sides can determine the swing amount. The fan-shaped bearing slider of this structure has poor pressure bearing capacity due to its thinness, and the movement of the fan-shaped bearing slider in the concave ring groove is inflexible due to long-term corrosion or dirt accumulation, which is easy to cause wear and tear, and the structural shape is also relatively small. Complex, difficult to process, difficult to guarantee manufacturing accuracy

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