Fluid Leakage Sensing System for Marine Hoses

Abstract

The present invention provides a fluid leakage sensing system for a marine hose that can more reliably sense the leakage of a specific fluid such as refined oil flowing in a marine hose without substantially changing the structure of the hose. When the fluid L flowing in the flow path 1 a flows into the fluid retention layer 7 sandwiched between the inner reinforcement layer 4 and the outer reinforcement layer 6 , it is provided at a fluid retention layer at a predetermined position in the longitudinal direction of the marine hose 1 . The passive IC tag 10 in the layer 7 becomes soaked or surrounded by the inflowing fluid L, and the covering layer 13 of the IC tag 10 formed of a soluble member dissolved by the fluid L dissolves to block radio waves. The covering layers 13 of W1 and W2 are reduced, and the strength of the radio wave W2 transmitted from the IC tag 10 changes in response to the radio wave W1 transmitted from the radio wave transmitter 14a arranged outside the ship hose 1. Therefore, based on the radio wave The intensity of the radio wave W2 received by the receiver 14b can determine whether or not the fluid L has leaked from the flow path 1a.

Description

technical field [0001] The present invention relates to a fluid leakage sensing system for a marine hose, and more specifically, to a system capable of more reliably sensing the leakage of a specific fluid such as refined oil flowing in a marine hose without substantial loss of A fluid leakage sensing system for a marine hose that changes the configuration of the marine hose. Background technique [0002] In marine hoses that connect oil tankers at sea to land facilities, etc., and transport fluids such as crude oil at sea, there is known a structure in which a fluid retention layer is provided between reinforcing layers stacked on the outer peripheral side of the flow path. . Fluid leaked from the flow path is temporarily stored in the fluid storage layer to prevent leakage to the outside. In order to sense such an abnormality of fluid leakage, various leakage sensing units that operate by fluid flowing into a fluid retention layer have been proposed (for example, refer t...

AI Technical Summary

Problems solved by technology

However, in such a configuration utilizing changes in the air pressure of the fluid storage layer, it is difficult to sense fluid leakage when the change in air pressure is small even if the fluid flows into the fluid storage layer.

In addition, there is a problem that the structure of the marine hose is changed in order to install a spiral flexible pipe, a communication pipe, etc. in the fluid retention layer.

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