Management system for marine hose

Abstract

A flange for coupling the marine hoses with each other is provided on an outer surface of its cylindrical portion with a liquid leakage sensor and a strain gauge. Information from the liquid leakage sensor and the strain gauge are transmitted through a signal line to an information accumulation device on a single-point mooring buoy. A computer is connected to the single-point mooring buoy, and the information transmitted from the liquid leakage sensor and the strain gauge is taken into the computer to detect a marine hose having a liquid leakage and a marine hose having an experienced abnormal external force. Further, the information transmitted from the strain gauge is taken into the computer, and a fatigue degree of each marine hose is estimated based on the number of times in which stress exceeding a specific minimum setting value has been generated in the marine hose and on the magnitude of each stress. Such information is displayed on a computer display image and the replacing time of a marine hose is estimated based on the information.

Description

technical field [0001] The present invention relates to a marine hose management system capable of replacing a marine hose before such a marine hose is damaged. Background technique [0002] Sometimes, a marine hose used for transporting crude oil may be damaged by collision with a port construction ship or the like, fatigue deterioration, etc., and therefore, a marine hose capable of detecting damage due to collision, deterioration, etc. is known. That is, if a large external force is applied to the hose due to a port construction ship colliding with the hose, bad weather, etc., the outer surface rubber of the hose may be damaged, surrounding seawater may seep into the hose, or if the hose is damaged due to fatigue deterioration, If the rubber on the inner surface of the hose reinforcing member is damaged and the liquid being conveyed such as crude oil leaks, the leaked liquid will enter the reinforcing fiber layer of the hose and reduce the pressure resistance, which event...

AI Technical Summary

Problems solved by technology

[0005] However, in the marine hoses disclosed in Japanese Patent Laid-Open No. 11-153284 and Japanese Patent Laid-Open No. 11-325378, there is a problem that a maintenance worker of a marine hose must pass through a readout unit including a transmitting and receiving antenna. Going close to each hose and reading out information about stress values ​​and liquid leakage stored in the information storage unit from many marine hoses to detect damaged marine hoses requires a lot of time and labor for workers

[0008] However, in the marine hose disclosed in Japanese Patent Laid-Open No. 11-153284, the worker himself reads out information on the stress value from each marine hose by using a readout part including a transmitting and receiving antenna, and based on the The amount and magnitude of stress generated evaluates the degree of fatigue of each hose, therefore, there is a problem that it is difficult to quickly and accurately evaluate the replacement timing of hoses in use

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