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公开(公告)号：US20190048526A1
公开(公告)日：2019-02-14
申请号：US16079877
申请日：2017-02-24
Applicant: Valmet Technologies Oy
Inventor： Heikki Kettunen , Gerald Kramer , Tatu Pitkänen , James Sipprell , Todd Vandenheuvel
CPC classification number: D21G9/0036 , B65H18/26 , B65H2515/314 , B65H2801/84 , G01L5/108
Abstract: The invention relates to a method for monitoring the condition of a continuous element (44) moving in a fiber web or paper finishing machine, said monitoring being performed with a rotating machine element (41), which is equipped with a sensor assembly (24) 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 (25) is generated between the machine element and the continuous element with the sensor assembly, and a cross-directional profile (21) 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 (32, 33) installed in a fabric run (22, 23) 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 (35) 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 (37) 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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公开(公告)号：US10662584B2
公开(公告)日：2020-05-26
申请号：US16079877
申请日：2017-02-24
Applicant: Valmet Technologies Oy
Inventor： Heikki Kettunen , Gerald Kramer , Tatu Pitkänen , James Sipprell , Todd Vandenheuvel
Abstract: The invention relates to a method for monitoring the condition of a continuous element (44) moving in a fiber web or paper finishing machine, said monitoring being performed with a rotating machine element (41), which is equipped with a sensor assembly (24) 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 (25) is generated between the machine element and the continuous element with the sensor assembly, and a cross-directional profile (21) 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 (32, 33) installed in a fabric run (22, 23) 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 (35) 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 (37) 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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