METHOD FOR PREDICTIVE MAINTENANCE OF CYLINDER USING PRESSURE DIFFERENCE

WIPO Patent Application WO/2024/071597

A1

The present invention relates to a method for predictive maintenance of a cylinder using a pressure difference, wherein a pressure difference between the internal pressure of the cylinder and the internal pressure of a main pipe for supplying the cylinder with a hydraulic pressure or pneumatic pressure supplied from a conventional pressure device is detected in an operating range in which the cylinder's rod moves forwards and backwards, thereby collecting pressure difference waveforms regarding the operating range, a steady-state model waveform is constructed on the basis of the collected pressure difference information, a matching threshold regarding the constructed steady-state model waveform is then set, and if the detected matching ratio between the pressure difference waveform collected from the cylinder which operates in real time and the steady-state model waveform is below a matching threshold, the cylinder is recognized as being in an abnormal state, and a warning is issued regarding same such that the cylinder can be repaired and replaced at an appropriate time, thereby preventing a substantial loss which would otherwise occur if the cylinder fails.

LEE YOUNGKYU (KR)

PCT/KR2023/009280

April 04, 2024

July 01, 2023

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ITS CO LTD (KR)

F15B20/00; F15B9/02; F15B11/06; F15B19/00

KR20220032346A	2022-03-15
JPH09240948A	1997-09-16
KR20200081166A	2020-07-07
KR20190108271A	2019-09-24
KR20110085610A	2011-07-27
EP0092123A2	1983-10-26

OH, Juseok (KR)

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