What is the operating mode of the sealing oil system when the sealing oil pump stops?

What is the operating mode of the sealing oil system when the sealing oil pump stops?

The sealing oil pump stops completely. When lubricating oil is supplied, the emergency shutdown and hydrogen to the machine pressure is within a certain range of a certain value higher than the sealing oil pressure, until the lubricating oil pressure of the main engine can seal the hydrogen. At this time, the operation mode of the sealing oil is as follows: lubricating oil box of the main engine -- lubricating oil system -- differential pressure valve -- generator sealing shoe -- lubricating oil box of the main engine. Pay attention to the oil level of the float ball valve box. If the oil level is high and the return oil is not free, open the bypass manual door to control the oil level.