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Title: Naval electrochemical corrosion reducer

Abstract

A corrosion reducer for use with ships having a hull, a propeller mounted a propeller shaft and extending through the hull, bearings supporting the shaft, at least one thrust bearing and one seal. The improvement includes a current collector and a current reduction assembly for reducing the voltage between the hull and shaft in order to reduce corrosion due to electrolytic action. The current reduction assembly includes an electrical contact, the current collector, and the hull. The current reduction assembly further includes a device for sensing and measuring the voltage between the hull and the shaft and a device for applying a reverse voltage between the hull and the shaft so that the resulting voltage differential is from 0 to 0.05 volts. The current reduction assembly further includes a differential amplifier having a voltage differential between the hull and the shaft. The current reduction assembly further includes an amplifier and a power output circuit receiving signals from the differential amplifier and being supplied by at least one current supply. The current selector includes a brush assembly in contact with a slip ring over the shaft so that its potential may be applied to the differential amplifier.

Inventors:
 [1]
  1. (Ballston Lake, NY)
Publication Date:
OSTI Identifier:
868003
Patent Number(s):
US 5052962
Application Number:
07/527,965
Assignee:
United States of America as represented by Secretary of Navy (Washington, DC) OSTI
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
naval; electrochemical; corrosion; reducer; ships; hull; propeller; mounted; shaft; extending; bearings; supporting; thrust; bearing; seal; improvement; current; collector; reduction; assembly; reducing; voltage; reduce; due; electrolytic; action; electrical; contact; device; sensing; measuring; applying; reverse; resulting; differential; 05; volts; amplifier; power; output; circuit; receiving; signals; supplied; supply; selector; brush; slip; potential; applied; differential amplifier; power output; current collector; electrical contact; thrust bearing; receiving signals; output circuit; chemical corrosion; electrochemical corrosion; corrosion reducer; /440/204/

Citation Formats

Clark, Howard L. Naval electrochemical corrosion reducer. United States: N. p., 1991. Web.
Clark, Howard L. Naval electrochemical corrosion reducer. United States.
Clark, Howard L. Tue . "Naval electrochemical corrosion reducer". United States. https://www.osti.gov/servlets/purl/868003.
@article{osti_868003,
title = {Naval electrochemical corrosion reducer},
author = {Clark, Howard L.},
abstractNote = {A corrosion reducer for use with ships having a hull, a propeller mounted a propeller shaft and extending through the hull, bearings supporting the shaft, at least one thrust bearing and one seal. The improvement includes a current collector and a current reduction assembly for reducing the voltage between the hull and shaft in order to reduce corrosion due to electrolytic action. The current reduction assembly includes an electrical contact, the current collector, and the hull. The current reduction assembly further includes a device for sensing and measuring the voltage between the hull and the shaft and a device for applying a reverse voltage between the hull and the shaft so that the resulting voltage differential is from 0 to 0.05 volts. The current reduction assembly further includes a differential amplifier having a voltage differential between the hull and the shaft. The current reduction assembly further includes an amplifier and a power output circuit receiving signals from the differential amplifier and being supplied by at least one current supply. The current selector includes a brush assembly in contact with a slip ring over the shaft so that its potential may be applied to the differential amplifier.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 01 00:00:00 EDT 1991},
month = {Tue Oct 01 00:00:00 EDT 1991}
}

Patent:

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