Boots – shoes – and leggings
Patent
1996-04-18
1998-09-22
Voeltz, Emanuel Todd
Boots, shoes, and leggings
162252, 162253, D21F 108, D21F 106
Patent
active
058124047
ABSTRACT:
A method for the continuous overall regulation of a single-layer or multi-layer headbox of a paper, board or pulp-draining machine. A physical fluid flow model of a pulp suspension flow discharged from the headbox to be regulated is formed and solved to obtain a simulated flow state based, e.g., on data on the geometry of the headbox and initial and boundary conditions related to the headbox. A target flow state based on the quality requirements of the paper produced from the pulp suspension flow and the costs of operation and runnability of the machine is obtained and a difference between the simulated flow state obtained as the solution of the flow model and the target flow state is determined. This difference constitutes a cost function which is optimized to determine optimal regulation values and set values for instrumentation devices and actuators of the headbox which affect the pulp suspension flow. The optimal regulation and set values are provided to the devices and actuators of the headbox such that the devices and actuators of the headbox may operate at the optimal regulation and set values.
REFERENCES:
patent: 3666621 (1972-05-01), Adams
patent: 4374703 (1983-02-01), Lebeau et al.
patent: 4500968 (1985-02-01), Bialkowski
patent: 4680089 (1987-07-01), Aral et al.
patent: 4707779 (1987-11-01), Hu
patent: 4748400 (1988-05-01), Typpo
patent: 4764253 (1988-08-01), Cheshire et al.
patent: 5071514 (1991-12-01), Francis
patent: 5072404 (1991-12-01), Schmitzer et al.
patent: 5082530 (1992-01-01), Keskiivari et al.
patent: 5381341 (1995-01-01), Herrala et al.
patent: 5490905 (1996-02-01), Huovila et al.
patent: 5603806 (1997-02-01), Kerttula
patent: 5688372 (1997-11-01), Huovilla et al.
patent: 5707495 (1998-01-01), Heinzmann et al.
"Mathematical Modelling and Simulation of Fluid Flows in the Headbox of Paper Machines", Jari Hamalainen, University of Jyvaskyla, Department of Mathematics, May, 1993.
J. Hamalainen and T. Tillhonen, "Modelling and Simulation of Fluid Flows in a Paper Machine Headbox", Published at ICIAM/GAMM 95 Symposium, Hamburg, Germany, Jul. 3-7, 1995 and in Zeitschrift fur Angewandte Mathematik und Mechanik, vol. 76, Supplement 4, 1996, pp. 65-68.
Hamalainen Jari
Nyberg Petri
Cole Tony M.
Todd Voeltz Emanuel
Valmet Corporation
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