System and method for influencing and/or monitoring a press pressure profile

Abstract

System and method for influencing and/or monitoring a press pressure profile along at least one of a web running direction and a transverse direction in an extended press nip used for treating a material web. The system includes a measuring device for measuring the press pressure profile, a profiling arrangement which participates in producing the press pressure profile, and a data storage device for storing data related to the profiling arrangement. The method includes storing, in a data storage device, data relating to a profiling arrangement which participates in producing the press pressure profile, retrieving the data and acting on the profiling arrangement based on the data. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

1 . A method for influencing and/or monitoring a press pressure profile along at least one of a web running direction and a transverse direction in an extended press nip used for treating a material web, the method comprising: 
 storing data, in a data storage device, relating to a profiling arrangement which participates in producing the press pressure profile;    retrieving the data; and    acting on the profiling arrangement based on the data.    
     
     
         2 . The method of  claim 1 , wherein the acting comprises controlling one of a movement and a position of the profiling arrangement.  
     
     
         3 . The method of  claim 1 , wherein the storing data relating to a profiling arrangement comprises storing data relating to one of a position of the profiling arrangement and a current position of the profiling arrangement.  
     
     
         4 . The method of  claim 1 , wherein the storing data relating to a profiling arrangement comprises storing data relating to pressure applied by the profiling arrangement.  
     
     
         5 . The method of  claim 1 , wherein the data comprises data related to a plurality of different press pressure profiles.  
     
     
         6 . The method of  claim 1 , further comprising one of setting a press pressure profile and presetting a desired press pressure profile.  
     
     
         7 . The method of  claim 1 , further comprising ensuring that the press pressure profile corresponds precisely to a desired press pressure profile.  
     
     
         8 . The method of  claim 7 , wherein the ensuring comprises changing an action of the profiling arrangement based on the data.  
     
     
         9 . The method of  claim 1 , further comprising one of changing an action of the profiling arrangement based on the retrieving and changing an action of the profiling arrangement based on a predefined press pressure profile.  
     
     
         10 . The method of  claim 1 , further comprising storing a predefined press pressure profile in the data storage device.  
     
     
         11 . The method of  claim 1 , wherein the storing comprises storing data relating to the press pressure profile which results during at least one of operation and dynamic conditions.  
     
     
         12 . The method of  claim 1 , wherein one of the data can be used to optimise at least one material web property and the data comprises data related to a plurality of press pressure profiles, whereby the plurality of press pressure profiles comprises press pressure profiles for different operating phases.  
     
     
         13 . The method of  claim 12 , wherein the different operating phases comprise at least a start-up phase and a commissioning phase.  
     
     
         14 . The method of  claim 1 , further comprising one of controlling and/or regulating the press pressure profile and measuring and/or monitoring the press pressure profile.  
     
     
         15 . The method of  claim 1 , further comprising measuring the press pressure profile during at least one of operation and dynamic conditions.  
     
     
         16 . The method of  claim 1 , further comprising: 
 measuring and monitoring the press pressure profile; and    determining changes which occur between the press pressure profile and a predefine press pressure profile.    
     
     
         17 . The method of  claim 16 , wherein the measuring and monitoring occurs during operation.  
     
     
         18 . The method of  claim 16 , further comprising carrying out a fault diagnosis during the determining, wherein the fault diagnosis is based on a state of one of a part of the extended nip press, the extended press nip, and at least one endless belt guided through the extended press nip.  
     
     
         19 . The method of  claim 1 , further comprising guiding a felt through the extended nip press.  
     
     
         20 . The method of  claim 1 , wherein the material web comprises one of a fibrous material web, a paper web, a board web, and a tissue web.  
     
     
         21 . The method of  claim 1 , wherein the extended press nip is arranged to at least one of dewater the material web and calender the material web.  
     
     
         22 . The method of  claim 1 , further comprising measuring the press pressure profile in the extended press nip.  
     
     
         23 . A system for influencing and/or monitoring a press pressure profile along at least one of a web running direction and a transverse direction in an extended press nip used for treating a material web, the system comprising: 
 a measuring device for measuring the press pressure profile;    a profiling arrangement which participates in producing the press pressure profile; and    a data storage device for storing data related to the profiling arrangement.    
     
     
         24 . The system of  claim 23 , wherein the measuring device measures the press pressure profile in the extended press nip.  
     
     
         25 . The system of  claim 23 , further comprising a press shoe arranged on at least one side of the extended press nip and a press belt guided through the extended press nip.  
     
     
         26 . The system of  claim 25 , wherein the press shoe comprises pressure measuring holes.  
     
     
         27 . The system of  claim 26 , wherein the pressure measuring holes open out to the press belt and are associated with the measuring device.  
     
     
         28 . The system of  claim 23 , wherein the measuring device comprises at least one pressure sensor.  
     
     
         29 . The system of  claim 28 , wherein the at least one pressure sensor is arranged in one of a press shoe, a press cover, and a press unit located opposite the pressing arrangement.  
     
     
         30 . The system of  claim 28 , wherein the at least one pressure sensor is arranged in one of a belt, a felt, and an opposing roll located opposite the pressing arrangement.  
     
     
         31 . The system of  claim 23 , wherein the profiling arrangement comprises at least one press shoe around which a press belt wraps.  
     
     
         32 . The system of  claim 31 , wherein the at least one press shoe is adjustable at least in the web running direction, whereby adjustment of the at least one press shoe sets the press pressure profile.  
     
     
         33 . The system of  claim 31 , further comprising at least one displacement transducer arranged to determine a position of the at least one press shoe.  
     
     
         34 . The system of  claim 31 , wherein the at least one press shoe comprises a sectioned press shoe arrangement.  
     
     
         35 . The system of  claim 34 , wherein the sectioned press shoe arrangement is sectioned along the transverse direction.  
     
     
         36 . The system of  claim 31 , wherein the at least one press shoe produces a plurality of press pressure profiles along the transverse direction.  
     
     
         37 . The system of  claim 36 , further comprising a plurality of pressing device which press the at least one shoe press and produce the plurality of press pressure profiles along the transverse direction.  
     
     
         38 . The system of  claim 23 , further comprising a circulating press belt and at least two separately controllable pressing elements for influencing the press pressure profile.  
     
     
         39 . The system of  claim 38 , wherein the at least two separately controllable pressing elements are arranged one after another in the web running direction.  
     
     
         40 . The system of  claim 39 , wherein the profiling arrangement comprises at least one press shoe, and wherein the at least one press shoe is arranged between the circulating press belt and the at least two separately controllable pressing elements.  
     
     
         41 . The system of  claim 23 , wherein the profiling arrangement comprises at least one press shoe arranged on one side of the extended press nip and an arrangement for changing a contour of the at least one press shoe along at least one of the web running direction and the transverse direction.  
     
     
         42 . The system of  claim 41 , wherein the at least one press shoe has at least one chamber, and wherein the at least one chamber is at least one of adapted to receive pressure therein, adapted to be heated, and adapted to be cooled, whereby the contour can be changed.  
     
     
         43 . The system of  claim 23 , wherein the profiling arrangement comprises at least one press shoe arranged on one side of the extended press nip and at least one pressing element and wherein the at least one press shoe is displaceable along at least one of the web running direction and the transverse direction.  
     
     
         44 . A system for influencing and/or monitoring a press pressure profile in an extended press nip used for treating a material web, the system comprising: 
 a device for measuring the press pressure profile in the extended press nip;    a press shoe which participates with an opposing device to produce the press pressure profile;    a data storage device for storing data related to at least one of a position of the press shoe and the press pressure profile; and    an arrangement for at least one of moving the press shoe based on the data and moving the press shoe based on the measured press pressure profile.    
     
     
         45 . A method for influencing and/or monitoring a press pressure profile along at least one of a web running direction and a transverse direction in an extended press nip used for treating a material web, the method comprising: 
 storing, in a data storage device, data relating to a profiling arrangement comprising a press shoe, wherein the press shoe participates in producing the press pressure profile;    retrieving the stored data; and    moving the press shoe based on the retrieved data,    wherein the stored data comprises at least one of the press pressure profile and a position of the press shoe.