The seal oil is supplied to the air-side of the seal ring at a pressure above the generator gas pressure.The H2-side seal oil is maintained at the same pressure by means of pressure-equalizing valves.

• 好吧，空气侧和氢测得密封油系统是分开的，氢侧的密封油返回到发电机密封环的氢侧，并防止将油中已吸收的氢气逸入外部大气中。