Fluid leakage detection system for marine hose

Abstract

Provided is a fluid leakage detection system which is for a marine hose and which ensures detection of fluid leakage from the marine hose without substantially changing the structure of the marine hose. When a fluid L flowing through a flow path 1a flows into a fluid retaining layer 7 provided between an inner circumferential reinforcing layer 4 and an outer circumferential reinforcing layer 6, a passive IC tag 10 installed inside the fluid retaining layer 7 at a prescribed longitudinal position of a marine hose 1 is immersed in or surrounded by the inflow fluid L, and a radio wave W2, generated in response to a radio wave W1 transmitted from a radio wave transmitter 14a disposed outside the marine hose 1, cannot be transmitted or becomes weak. Thus, whether there is leakage of the fluid L from the flow path 1a can be determined on the basis of the intensity of the radio wave W2 received by a radio wave receiver 14b disposed outside the marine hose 1.

Description

technical field [0001] The present invention relates to a fluid leakage sensing system of a marine hose, and more specifically, to a system capable of more reliably sensing fluid leakage of a marine hose without substantially changing the structure of the marine hose Fluid leak sensing system for marine hoses. 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 to Patent Document 1). [0003] In the sensing unit proposed in Pat...

AI Technical Summary

Problems solved by technology

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

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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