The Reliability Analysis of Bearing in Large Blower System

A large blower is one of the important subsystems in some complex gas transport. Typically, the blower system in the gas-cooled reactors act as the main pump in the water cooled reactors. The bearing is an essential equipment of the blower. In the vertical blower system, electromagnetic bearing and auxiliary bearing can be selected to suspend the blower system. Then the auxiliary bearing will bear the weight and kinetic energy of blower in the case of the electromagnetic bearing fails in process of blower running. Therefore, the reliability of the suit of bearing is one of the key questions in the design of blower. According to the design, the reliability of the suit of bearing is depended on the reliability of electromagnetic bearing and the design life of auxiliary bearing which is indicated by the times it can bear blower’s decline in the duration of running. In this paper, the reliability of this kind of bearing will be analyzed through a case study and the risk that it contributes to the blower system will be studied. The method of analysis is based on the reliability distribution of bearing and the Poisson distribution model. The advice about the design of bearing will be given from the results of analysis.