公开(公告)号：EP1084473B1

公开(公告)日：2008-09-24

申请号：EP99927309.7

申请日：1999-06-07

申请人： Honeywell International Inc.

发明人： HAGART-ALEXANDER, Claud ,  HU, Hung-Tzaw ,  WATSON, John, David ,  PRESTON, John, G.

IPC分类号： G06F17/00 ,  G06F19/00 ,  G06G7/66 ,  D21G9/00

CPC分类号： D21G9/0027

摘要： The system controls formation of wet stock (55) comprising fibers on a moving water permeable wire (13) of a de-watering machine that has a refiner (135) that is subject to a variable load and a headbox (10) having at least one slice (50), wherein each slice (50) has an aperture through which wet stock (55) is discharged at a stock jet speed onto the wire (13) that is moving at a wire (13) speed. A sheet of wet stock (55) moving a speed develops on the wire (13). The system includes: a) at least two water weight sensors (42A-42E) that are positioned adjacent to the wire wherein the at least two sensors (42A-42E) are positioned at different locations in the direction of movement of the wire (13) and upstream from a dry line (43) which develops during operation of the machine and the sensors (42A-42E) generate signals indicative of a water weight profile made up of a multiplicity of water weight measurements; and b) adjustability of at least one of the stock jet speed, sheet speed, wire speed, or refiner load to cause the water weight profile to match a preselected or optimal water weight profile.

公开(公告)号：EP1021729B1

公开(公告)日：2007-05-09

申请号：EP99922961.0

申请日：1999-05-11

申请人： Honeywell International Inc.

发明人： WATSON, John D. ,  HAGART-ALEXANDER, Claud ,  GOSS, John, D. ,  PRESTON, John, G. ,  HU, Hung-Tzaw ,  DUDAS, Laslo

IPC分类号： G01R27/26 ,  D21F1/66 ,  D21G9/00

CPC分类号： D21G9/0027 ,  D21D1/002 ,  D21F1/08 ,  Y10S162/06

摘要： System and method for producing paper are provided. The system controls formation of wet stock comprising fibers on a moving water permeable wire (7) of a de-watering machine that has means for supplying the amount of pulp from at least one source, means for adding an amount of non-fibrous additives to the wet stock, a refiner (20) that is subject to a variable load and a headbox (1) having at least one slice (11), wherein each slice (11) has an aperture through which wet stock is discharged onto the wire (7).

公开(公告)号：EP1117867B1

公开(公告)日：2006-09-13

申请号：EP99917308.1

申请日：1999-04-13

申请人： Honeywell International Inc.

发明人： GOSS, John, D. ,  CHASE, Lee ,  HAGART-ALEXANDER, Claud ,  HU, Hung-Tzaw ,  WATSON, David

IPC分类号： D21F1/00 ,  D21G9/00

CPC分类号： D21G9/0027 ,  Y10S162/11

摘要： A system of providing on-line turbulence measurements in a papermaking machine. The measurements are used to perform on-line adjustments to turbulence-inducing and adjusting elements in the papermaking machine to optimize final sheet product quality. Turbulence measurements are obtained using water weight sensors (23) in the wet end of the papermaking machine, specifically, under wire water weight measurements. Water weight readings are correlated to turbulence intensity levels. A turbulence processing sensor (25) sorts accumulated water weight measurement readings into intensity level intervals to obtain turbulence measurements or a turbulence profile. The trubulence measurements or profile is provided to a machine element controller (26) which uses the measured turbulence information and target turbulence information to generate control signals. Water weight sensors can obtain independent machine direction (MD) and cross machine direction (CD) water weight measurements and consequently independent turbulence measurements can be determined so that turbulence can be controlled in both directions. Machine elements are controlled so that turbulence remains uniform across the CD and so that the MD turbulence profile is optimized to resemble a target profile.