Salient shoulder type static pressure tangential small-hole gas bearing

Abstract

The invention relates to a salient shoulder type static pressure tangential small-hole gas bearing, which is a tangential small-hole gas bearing and is in cylindrical shape. The radiuses at two ends of the bearing are greater than that in the middle of the bearing; due to the adoption of a composite structure that a bearing body and a salient shoulder type bearing liner are bushed, the bearing body is sleeved outside the salient shoulder type bearing liner; and the longitudinal section of the salient shoulder type bearing liner has a circular ring structure, and an inward salient shoulders are arranged at two ends of the salient shoulder type bearing liner. Compared with the prior art, the bearing of the invention has the advantages that: the gap formed between the tangential small-hole gas bearing and the shaft can be reduced by 0.025mm, so that the air supply of the bearing is reduced by half, and the air consumption is reduced. Therefore, the whole energy consumption of the air equipment is reduced; in addition, the friction factor is obviously reduced. Even if the bearing and the shaft are instantly contacted with each other by accident, the rotor also can operate normally.

Description

technical field [0001] The invention relates to a gas bearing, in particular to a shoulder type static pressure tangential small hole gas bearing. Background technique [0002] The gas bearing is the key component of the gas static pressure bearing turbo expander. At present, the tangential small hole is generally used to supply the gas bearing. Although this kind of tangential small hole gas bearing has high running stability, due to the large gap with the shaft, generally the radial gap reaches 0.045mm, so the increase in the gas consumption of the bearing will affect the energy consumption of the complete air separation plant index. Contents of the invention [0003] The object of the present invention is to provide a shoulder-type static pressure tangential small hole gas bearing with reduced air consumption and less friction factor in order to overcome the above-mentioned defects in the prior art. [0004] The purpose of the present invention can be achieved through...

AI Technical Summary

Problems solved by technology

Although this kind of tangential small hole gas bearing has high running stability, due to the large gap with the shaft, generally the radial gap reaches 0.045mm, so the increase in the gas consumption of the bearing will affect the energy consumption of the complete air separation plant index

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