Before starting the liquid oxygen pump to cool down, the blowing valve should be open and connected to the room temperature nitrogen blowing labyrinth for 10-20 minutes. On the one hand, the oxygen driver is left and at the same time the seal is returned to the normal temperature gap.

After turning, confirm that there is no fault, start the water pump, and pay attention to the stability of the inlet pressure of the pump. If the pressure fluctuates or the outlet pressure does not rise, cavitation may occur. The exhaust valve body on the pump must be opened to continue to cool the liquid oxygen pump. Stable to control the pressure of the sealing gas to be higher than the pressure of 01005-0101 MPa before the sealing.