Property analysis of thrust shoe oil film

In erection of No.18 unit in the right bank plant of Three Gorges hydropower project,alignment can not be normally conducted for swing measurement after the thrust cone is coupled with the rotor.Analysis shows that the main reason is that an integral oil film has not formed between the thrust block and the thrust ring,i.e.,no oil film at the thrust block side close to the main shaft,which results in dry friction in this area during alignment.To ensure the normal alignment and stable operation of the unit,the issue of thrust block oil film must be solved first.Understanding the related properties of thrust block oil film is a great help to the analysis and solution of the failure of thrust bearing.