CORROSION PROTECTION SYSTEM OF MARINE PROPELLER AND PROPELLER SHAFT OF SHIP Russian patent published in 2011 - IPC B63B59/00 B63H1/14 C23F13/06 

FIELD: electricity.

SUBSTANCE: protection system includes at least one anode arranged in outboard space of ship, protection control including metre of electric parameters of galvanic pair "propeller shaft - ship hull" and protective current source connected to anode. At that, anode is located on propeller shaft. Protective current source is located on propeller shaft and made in the form of rectifier the positive pole of which is connected to anode, and negative pole of which is connected to propeller shaft. System is equipped with AC source controlled as to power. Input of protective current source is connected to output of AC source through stationary winding located onboard the ship and enveloping the propeller shaft, as well as the second winding coaxially installed on propeller shaft, which are inductively connected to each other.

EFFECT: providing retardation of corrosion and erosion damages to marine propellers, which increases their service life.

10 cl, 2 dwg