Apparatus and method for determining the permeability of a circulating band in a paper machine

An apparatus and a method for determining the permeability of a circulating band, in particular a water-absorbing dewatering band in a papermaking machine. The apparatus is equipped with a nozzle from which a measuring fluid flows onto or through the band. Fluctuations in the flow of the measuring f...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	ISCHDONAT THOMAS, PFIFFERLING RALF, ULFERT WOLFGANG, MUENCH RUDOLF, SOLLINGER MICHAEL
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES FOR PAPER-MAKING MACHINES CALENDERS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING METHODS OF PRODUCING PAPER THEREON PAPER-MAKING PAPER-MAKING MACHINES PHYSICS PRODUCTION OF CELLULOSE TESTING TEXTILES
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	An apparatus and a method for determining the permeability of a circulating band, in particular a water-absorbing dewatering band in a papermaking machine. The apparatus is equipped with a nozzle from which a measuring fluid flows onto or through the band. Fluctuations in the flow of the measuring fluid and in the nozzle exit pressure can distort the measurement of the permeability. The apparatus has a device for determining the speed of the band and/or a device for determining the nozzle exit speed and the nozzle exit pressure of the measuring fluid. These three measured variables are measured simultaneously, so that a fluctuation in one of these measured variables cannot impair the accuracy of the permeability measurement.