The invention discloses an intelligent sealing device for ship
tail shaft
numerical control magnetic fluid. According to the main structure of the intelligent sealing device, a
stuffing box is arranged at the sealed part of a
tail shaft, one end of the box is provided with a gland, and the other end of the box is connected with a sternpost through a
flange. Two
layers of PTFE ring box sleeves are arranged in the middle of the box in parallel, and nx twelve radial hedging magnetic sector permanent magnets are embedded in each layer of box sleeve. Magnetic fluid circulating cavities are formed between the box sleeves in which the magnets are embedded and a shaft tube. The two sides of each permanent
magnet box sleeve are each provided with a stainless steel circular ring and provided with eight magnetic fluid injecting or discharging holes, wherein the outer sides of the two stainless steel circular rings are each provided with a stainless steel clamping ring. An AH
type metal framework teflon sealing ring is clamped on a
tail shaft tube. An MCU is arranged, a magnetic
fluid input pump and an electromagnetic overflow valve are controlled according to the pressure and temperature sensor information, the pressure in the magnetic fluid circulating cavities and the pressure at the draft of a warship and a
submarine can be randomly the same, sealing, lubricating and cooling functions are achieved on the tail shaft tube through circulation of pressurized cold and hot magnetic fluid, and an electromagnetic sealing
brake is arranged for strengthening static sealing of the tail shaft tube during
downtime.