| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a protective structure of an electrode for corrosion prevention which can exert a corrosion preventive effect on all areas of wetting metallic sections of an underwater electrically driven pump etc., by a single electrode for corrosion prevention, can protect the electrode for corrosion prevention from the entanglement of foreign substances around the electrode for corrosion prevention and the vibration during operation, is semipermanent in the corrosion preventive effect, eliminates the need for replacement of the electrode for corrosion prevention and is excellent in maintainability. <P>SOLUTION: The electrode for corrosion prevention 6 is disposed to face the underwater electrically driven rotary machine 1 installed within a water tank 2 in a contacless state with the same by the form of leading corrosion preventive wiring 4a out of a motor section of the underwater electrically driven rotary machine 1, connecting the same to a negative side electrode of a corrosion preventive electric power unit 5, connecting the insoluble electrode for corrosion prevention 6 to the front end of a cable 4b for the electrode led down from the positive side terminal of the corrosion preventive electric power unit 5 and housing the electrode for corrosion prevention 6 in a guide pipe 3 erected so as to communicate with the interior of the water tank 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
