Valmet Technologies Oy

Todd Vandenheuvel

Heikki Kettunen

Tatu Pitkänen

Gerald Kramer

James Sipprell

A method for monitoring a machine element in a paper finishing machine (). The machine element mounted for rotation machine elements (-) equipped with a sensor assembly () measuring force or pressure, and a counter-pair () for said machine element. The machine element is made to rotate against the counter-pair, a measurement signal () is generated between the machine element and the counter-pair with the sensor assembly, and recording a reference cross-directional profile () of force or pressure generated. Condition monitoring () of vibration with the reference profile is by comparison of current signals with the reference so as to detect periodic variation () in the cross-directional pressure profile, and producing visual information () from the analysis for monitoring. The invention also relates to a corresponding system, a rotating machine element for the method or the system, and a computer program product.

Method, system and a computer program product for condition monitoring of a fiber web or paper finishing machine

The invention relates to a method for monitoring the condition of a continuous element () moving in a fiber web or paper finishing machine, said monitoring being performed with a rotating machine element (), which is equipped with a sensor assembly () that measures force or pressure and against which the continuous element moves. In the method, the machine element is made to rotate against the continuous element, a measurement signal () is generated between the machine element and the continuous element with the sensor assembly, and a cross-directional profile () of force or pressure generated between the machine element and the continuous element is formed from the measurement signal. Said moving continuous element is a fabric () installed in a fabric run () traveling via the machine element. In the method, the fabric is additionally installed in a fabric run, wherein it moves via said machine element equipped with a sensor assembly, a reference profile () is formed for the cross-directional profile after installing the fabric in the fabric run, the cross-directional profile formed from the measurement signal and representing force or pressure generated between the machine element and the fabric is compared with the reference profile, and information () is produced from the comparison for monitoring the condition of the fabric. The invention also relates to a corresponding system and a computer program product.

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Hortonville, WI, United States of America

Todd Vandenheuvel