Propeller antifouling method based on impulse current method

Abstract

The invention discloses a propeller antifouling method based on the impulse current method, so as to solve the defects in the prior art. By the existing impressed current cathodic protection (ICCP) system at the stern of a ship, an antifouling mode is added in an electric control cabinet of the ICCP system at the stern, during the anchoring period of the ship, the ICCP system at the stern is converted to the antifouling mode. According to the working procedure of the antifouling mode, every 5-7 hours, the electric control cabinet is automatically electrified in reverse direction for 5-10 minutes (namely, being electrified with constant current in a manner of taking the propeller as the anode and taking the auxiliary anode as the cathode), and then, the electric control cabinet is switched to the normal electrification state (the propeller is taken as the cathode and the auxiliary anode is taken as the anode), in cycles. During the reverse electrification process, the copper-alloy propeller is used as the anode to be electrolyzed so as to generate cuprous ions, the cuprous ions are uniformly distributed on the surface of the propeller, and the cuprous ions can restrain and kill the marine organism, thus, the antifouling aim is realized.

Description

technical field [0001] The invention relates to a propeller antifouling method by a pulse current method, which belongs to the ship protection technology in the field of marine engineering equipment manufacturing. current technology [0002] Due to the frequent docking of ships, the propellers are in a static state, which makes it easy for marine organisms to attach. The fouling of ship propellers in our country is serious, resulting in increased resistance, increased power consumption, and increased noise, which seriously affects the normal operation of ships. [0003] At present, there are two basic measures for propeller fouling prevention and control: [0004] The first is manual cleaning. Before the ship docks at the dock and prepares to leave the port, divers carry tools to carry out manual cleaning underwater. Using tools to pry off the creatures attached to the propeller bit by bit, not only consumes a lot of manpower and material resources, but also is dangerous. ...

AI Technical Summary

Problems solved by technology

[0004]The first is manual cleaning. Before the ship docks at the dock and prepares to leave the port, divers carry tools to carry out manual cleaning underwater. Prying it off a little bit not only consumes a lot of manpower and material resources, but is also a dangerous operation, and it may damage the propeller and destroy the smoothness of its surface;

[0005]The second is to use traditional antifouling technologies, such as electrolytic seawater chlorine production technology, electrolytic copper-aluminum anode technology, etc. Although these two technologies are feasible in principle Yes, but you need to add an additional electrolytic chlorine or electrolytic copper-aluminum anode system

At the same time, the maintenance and management of equipment will increase the workload of the crew

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