Fluid leakage sensing system for marine hose

Abstract

The invention provides a fluid leakage sensing system of a marine hose, which can more reliably sense fluid leakage without monitoring the consumption condition of a battery and reduce the labor amount of fluid leakage confirmation work. When a fluid (L) flowing through a flow path (1a) flows into a fluid retention layer (7) sandwiched between an inner peripheral reinforcing layer (4) and an outerperipheral reinforcing layer (5), the fluid (L) increases the pressure (P) of a pressure holding chamber (20b) of a housing (18) through a communication pipe (10) and a check valve (17), the pressure(P) being held by the check valve (17) and being sensed by a pressure sensor unit (15). In response to a transmitted radio wave (W1) transmitted from a radio wave transmitting unit (21a) disposed onthe outside of the marine hose (1), a return radio wave (W2) is transmitted from a passive IC tag (12), sensing pressure data based on a pressure sensor unit (15) transmitted by the return radio wave(W2) is received by a radio wave receiving unit (21b), and the presence or absence of fluid (L) leakage is determined based on the received sensing pressure data.

Description

technical field [0001] The present invention relates to a fluid leakage sensing system for a marine hose, and more specifically, to a system that can more reliably sense fluid leakage of a marine hose without monitoring the consumption of a battery, and can seek to make the fluid A fluid leakage sensing system for marine hoses that reduces the labor load of leakage confirmation work. Background technique [0002] In a marine hose, by providing a fluid retention layer between reinforcing layers, the leaked conveyance fluid can be temporarily stored in the fluid retention layer to prevent leakage to the outside of the hose. In order to sense the transport fluid leaked to the fluid retention layer, for example, a fluid leakage sensor using an oil pod is known (see Patent Document 1). In this fluid leakage sensor, when the transfer fluid leaks into the fluid retention layer, passes through the communication pipe and enters the oil tank, the detection body accommodated in the oi...

AI Technical Summary

Problems solved by technology

The sensed air pressure also fluctuates according to the movement of the marine hose. Therefore, in order to sense the fluid leakage with high precision, it is necessary to increase the frequency of sending the sensing signal (sending the sensing signal frequently). However, along with this, the battery Consumption faster

On the other hand, when the transmission frequency is low, it is not conducive to sensing fluid leakage with good accuracy

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