Sliding bearing with floating type bearing pads

Abstract

The invention discloses a sliding bearing with floating type bearing pads. The sliding bearing comprises floating type sliding bearing pads, a bearing support and a bearing end cover, wherein the floating type sliding bearing pads are arranged at the axial direction of a shaft body, a sliding contact surface is formed between the sliding bearing pads and the shaft body; the sliding bearing pads are also fixedly connected with the bearing support, an outer groove and an outer oil inlet communicated with the outer groove are formed on the outer side of the bearing support; the bearing end cover is arranged on two sides of the bearing support, a circle of groove is formed on the middle part of the inner circle contact surface of the bearing end cover, an oil returning hole is formed below the groove, the lubricating oil enters into the outer groove of the bearing support from the outer oil inlet of the bearing support, and flows into the interior of the bearing through an inner oil inlet which is formed between the sliding bearing pads, and after the bearing is filled with the lubricating oil, the lubricating oil flows out of the oil returning hole located in the bearing end cover. The service life of the sliding bearing is prolonged, and the working stationarity and the reliability of the sliding bearing are improved.

Description

technical field [0001] The invention relates to the field of nuclear power, in particular to a bush floating type sliding bearing of a nuclear power conventional island main feedwater pump. Background technique [0002] In the operating equipment of power plants including nuclear power plants, most of the high-speed rotating mechanisms generally use sliding bearings to ensure the smooth operation of the rotor. Sliding bearings have the advantages of stable operation, reliability, and no noise, and the oil film formed between the bearing bush and the shaft has a certain vibration-absorbing ability. Feed water pump is an important equipment in the secondary circuit system of nuclear power plant, its operation reliability directly affects the operation of the whole system, and plays a key role in the system. Therefore, as a key component in the feed water pump, it is very important to ensure the smooth operation and reliability of the sliding bearing. [0003] In power statio...

AI Technical Summary

Problems solved by technology

If the traditional two bearing pads are used, the oil film may be incomplete due to insufficient oil supply. During operation, friction will be caused due to the contact between the shaft and the bearing pads, resulting in surface heating, wear and even "seizure", which will be exacerbated by long-term operation Wear and tear of equipment reduces the operating life and maintenance cycle of equipment, especially for nuclear power plants, which greatly increases maintenance costs

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