Independent oil supply sliding bearing with changeable pads and compressor equipped with bearing

Abstract

The invention discloses an independent oil supply sliding bearing with changeable pads. The independent oil supply sliding bearing comprises a bearing body and the pads which are concentric, wherein the bearing body comprises an inner contact surface provided with a plurality of grooves, each pad comprises an outer arc-shaped plate, each outer arc-shaped plate comprises an outer contact surface which is in seamless contact with the inner contact surface, a boss which is in interference fit with the groove is arranged on each outer contact surface, an inner arc-shaped plate is fixedly connected at the midline on the inner side of each outer arc-shaped plate, and the pads are symmetrical by taking the central axis of the bosses as the symmetrical axle; the number of the grooves corresponds to that of the pads; and a plurality of oil inlet rods are distributed on the bearing body and penetrate through the bearing body. According to the independent oil supply sliding bearing disclosed by the invention, only the pads which are simple in structure and low in cost need to be replaced; furthermore, the processing precision is reduced, and the using requirements can be met by only ensuring the processing precision and the hardness requirements on the contact surface between each pad and the bearing; and the oil inlet rods are simple in structure and convenient to mount, and a gap between each oil guide rod and a shaft can be adjustable.

Description

technical field [0001] The invention relates to a centrifugal compressor with a sliding bearing, in particular to a sliding bearing with a separate oil supply for replaceable pads and a compressor equipped with the bearing. Background technique [0002] In centrifugal compressors, tilting pad sliding bearings are commonly used as a support bearing. A certain wedge-shaped gap is set between the tilting pad and the rotating shaft to form the rigidity of the oil film used for bearing. [0003] In the traditional tilting pad bearing, the pad and the bearing support body are designed as an integral form to ensure the rigidity of the tilting pad when floating. The tilting pad will generate a lot of heat during the high-speed rotation of the shaft. If the heat is not taken away in time, the temperature of the bearing pad will rise rapidly and an alarm will be generated, which will affect the normal operation of the entire centrifugal compressor unit. run. [0004] The traditiona...

AI Technical Summary

Problems solved by technology

The tilting pad will generate a lot of heat during the high-speed rotation of the shaft. If the heat is not taken away in time, the temperature of the bearing pad will rise rapidly and an alarm will be generated, which will affect the normal operation of the entire centrifugal compressor unit. run

[0004] The traditional cooling method is to open an oil inlet hole on the bearing body, and use the small gap between the pad and the bearing for heat exchange and cooling, resulting in insufficient supply of lubricating oil and high temperature of the pad

In the worst case, the bearing will be directly scrapped or burnt. However, the traditional tilting pad has an integral bearing body structure. Once the pad is damaged, the entire bearing needs to be replaced, which will lead to waste of the entire bearing body and increase bearing maintenance. cost of

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