Marine hose fluid leakage detection system

Abstract

Provided is a marine hose fluid leakage detection system capable of more reliably detecting leakage of a specific fluid such as refined oil flowing through a marine hose without substantially changingthe hose structure.When a fluid (L) flowing through a flow channel (1a) flows into a fluid retention layer (7) interposed between an inner circumferential reinforcing layer (4) and an outer circumferential reinforcing layer (6), an IC tag (10) of a passive type installed in the fluid retention layer (7) at a predetermined longitudinal position of a marine hose (1) is immersed or surrounded in thefluid (L). Then, a cover layer (13) of the IC tag (10), being formed of a soluble member that is dissolvable by the fluid (L), is dissolved to reduce an area of the cover layer (13) that blocks radiowaves (W1) and (W2). Accordingly, the radio waves (W2) transmitted from the IC tag (10) in response to the radio waves (W1) transmitted from a radio wave transmitter (14a) disposed outside the marinehose (1) change in strength. This enables a determination whether the fluid (L) leaks from the flow channel (1a), based on the strength of the radio waves (W2) received by a radio wave receiver (14b).

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.

Images