Abstract: This paper analyzes the reasons for the shutdown caused by the high ventilation pressure in the Titan130 turbine lubricating oil tank,and puts forward the corresponding solutions. The lubricating oil system of Titan130 turbine and the setting of parameters of the oil tank are introduced. The two main reasons for the high ventilation pressure are analyzed,namely,the poor ventilation of the lubricating oil tank and the increase of pressure in the lubricating oil return pipeline. In view of these two situations,solutions such as checking oil and gas separator,liquid accumulation at the elbow of ventilation pipeline,valve status on ventilation pipeline and sealing of bearing inlet and return oil pipeline are put forward respectively,which provides an effective method to solve the problem of high ventilation pressure of Titan130 turbine.

Key words: Titan130 turbine, lubricating oil tank, high ventilation pressure, cause of shutdown, troubleshooting