Paper making and fiber liberation – Processes and products – With measuring – inspecting and/or testing
Reexamination Certificate
2001-12-05
2004-08-10
Chin, Peter (Department: 1731)
Paper making and fiber liberation
Processes and products
With measuring, inspecting and/or testing
C162S263000, C162SDIG004, C034S446000, C034S454000, C034S117000
Reexamination Certificate
active
06773551
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to an apparatus for the determination of characteristics of a running material web and/or of a machine for its manufacture and/or refinement, in particular for use in paper making machines, preferably in the dryer sections of paper making machines, with at least one measuring device.
2. Discussion of Background Information
For the optimization of the manufacturing process of material webs, in particular of paper webs, it is desirable to know the operating state, for example of a paper making machine, and also its behavior on changes of the machine settings as well as possible. For this purpose mathematical models are also used which describe the entire paper making machine or individual sections of the paper manufacture. For the optimization of such models and also for the control or regulation of the individual devices used in the manufacturing process, for example in a dryer section of a paper making machine, measuring devices are used in order to collect data which relate to different measured parameters, for example the moisture content of a paper web or the surface temperature of dryer cylinders. These data can serve as a basis for the models which describe the manufacture and/or refinement process and be made available to control or regulating units by which the conditions at individual machine sections can be changed, for example by controlling corresponding setting members.
Stationary measuring devices are known, with which spatially fixed measurements can be carried out with respect to one measured parameter at one measurement location, as well as scanners which include a sensor movable transverse to the web running direction.
SUMMARY OF THE INVENTION
The present invention therefore provides an apparatus of the initially named kind which can be used as universally and variably as possible and which can also be used in paper making machines.
The invention thus provides that the measuring device has at least two degrees of freedom of movement respectively corresponding to a rotary movement or a linear movement for the detection of data relating to at least one measured parameter at a plurality of measurement locations.
According to one aspect of the invention, there is provided an apparatus for determining characteristics of a running material web including at least one measuring device. The at least one measuring device is movable and has at least two degrees of freedom of movement. Each of the at least two degrees of freedom of movement is at least one of a rotary movement and a linear movement. The at least one measuring device is adapted to detect, a plurality of measurement locations, data relating to at least one measured parameter. The at least one measuring device detects data about at least one of the following measured parameters: measured parameters which relate to a characteristic value of air in a region of the material web; measured parameters which relate to the material web; and other measured parameters. The at least one measuring device may be located in at least one of a machine for manufacturing the material web, a machine for refining the material web, a paper making machine, and a dryer section. The measured parameters which relate to a characteristic value of air may comprise at least one of air temperature, air moisture, air flow, air flow direction and air flow speed. The measured parameters which relate to the material web may comprise at least one of a thickness of the material web, a temperature of the material web, and a moisture content of the material web. The other measured parameters may comprise at least one of a temperature of dry air used to dry the material web, a dew point of dry air used to dry the material web, a temperature prevailing at or in a region of a surface of a dryer cylinder of a paper making machine, a permeability at a dryer sieve, a speed of air flow that is present at a surface of a dryer sieve, air humidity at an individual machine component, and air humidity at certain locations of the material web.
The at least one measuring device may be adapted to move while it measures and without interruption from data detection. The at least one measuring device may be adapted to simultaneously carry out the at least two degrees of freedom of movement. The at least one measuring device may be adapted to carry out the at least two degrees of freedom of movement one after the other timewise.
The at least one measuring device may be movable in at least a first direction and in at least a second direction. The second direction may be perpendicular to the first direction. The at least one measuring device may be movable in at least a first direction, in at least a second direction, and in at least a third direction. The second direction may be perpendicular to the first direction and the third direction may be perpendicular to the second direction.
The at least one measuring device may be movable, with respect to a running direction of the material web, at least one of parallel to the running direction and perpendicular to the running direction. The at least one measuring device may be movable, with respect to a running direction of the material web, at least one of along the running device, transverse to the running direction, and vertically to the running direction. The at least one measuring device may be movable via a plurality of linear movements. The plurality of linear movements may comprise at least two linear movements. One of the at least two linear movements may be perpendicular to another of the at least two linear movements. The at least two linear movements may comprise three linear movements. One of the three linear movements may be perpendicular to at least one of the other two of the three linear movements.
The at least one measuring device may be rotatable about at least one axis. The at least one axis may comprise at least a first axis and at least a second axis. The second axis may be perpendicular to the first axis. The at least one axis may comprise a first axis, a second axis, and a third axis. The second axis may be perpendicular to the first axis. The third axis may be perpendicular to the second axis. The at least one measuring device may be adapted to be oriented in any desired manner in space by executing a plurality of rotary movements. The plurality of rotary movements may comprise at least two rotary movements. One of the at least two rotary movements may have a first axis and another of the at least two rotary movements may have a second axis which is perpendicular to the first axis. The at least two rotary movements may comprise three rotary movements. One of the three rotary movements may have a first axis, another of the three rotary movements may have a second axis, and still another of the three rotary movements may have a third axis, with the second axis being perpendicular to the first axis. One of the three rotary movements may have a first axis, another of the three rotary movements may have a second axis, and still another of the three rotary movements may have a third axis, with the second axis being perpendicular to the first axis and with the third axis being perpendicular to the second axis.
The at least one measuring device may be adapted to move along any desired presettable curve in space and may be adapted to be oriented in any desired manner in space be executing a plurality of linear movements and rotary movements. The plurality of linear movements and rotary movements may occur simultaneously. The plurality of linear movements and rotary movements may occur one after another timewise. At least one linear movement of the at least one measuring device may be adapted to be changeable. At least one rotational movement of the at least one measuring device may be adapted to be changeable. An orientation of the at least one measuring device may be adapted to be changeable.
The apparatus may further comprise one of a beam and a stationary frame, wherein the at least one measuring device is movable relative to
Oechsle Markus
Wegehaupt Frank
Chin Peter
Greenblum & Bernstein P.L.C.
Halpern Mark
Voith Paper Patent GmbH
LandOfFree
Device for determining the characteristics of a running... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for determining the characteristics of a running..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for determining the characteristics of a running... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3349613