CN102373647A - Method and device for regulating the humidity of material web - Google Patents
Method and device for regulating the humidity of material web Download PDFInfo
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- CN102373647A CN102373647A CN2011102288274A CN201110228827A CN102373647A CN 102373647 A CN102373647 A CN 102373647A CN 2011102288274 A CN2011102288274 A CN 2011102288274A CN 201110228827 A CN201110228827 A CN 201110228827A CN 102373647 A CN102373647 A CN 102373647A
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- Prior art keywords
- humidity
- damping device
- value
- material web
- moisture content
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
- D21F7/003—Indicating or regulating the moisture content of the layer
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- Treatment Of Fiber Materials (AREA)
Abstract
The invention relates to a method and a device for regulating the humidity of a material web, the method is a method for adjusting the final humidity of a fiber material web when being used to manufacture the fiber material web on a paper machine equipped with a molding part, a suppressing part, a drying part, a humidifying device(5) and a humidity sensor. The fiber material web is specially a paper material, a paper plate material or a cotton paper material, the previous humidity before adding the humidifying device is adjusted by a first material web humidity adjusting member(1), and the final humidity after adding the humidifying device is adjusted by a second material web humidity adjusting member(2). The actual humidity value of the first material web humidity adjusting member(1) is measured by a first virtual humidity sensor, and the final actual humidity value of the second material web humidity adjusting member(2) after adding the humidifying device is measured by a physical humidity sensor, under the situation that the humidity virtual actual value is measured by employing a second virtual humidity sensor before adding the humidifying device, the humidity of the material web is adjusted by changing the humidifying effects of the humidifying device.
Description
Technical field
The present invention relates to a kind of when being used on paper machine making fiber material web with moulding section, press portion, drying nest, damping device and humidity sensor; The method that the final moisture content of fiber material web is regulated; Fiber material web is meant paper web material, board web material or web of tissue paper material especially; Wherein, the humidity before the damping device is regulated through first width of cloth material humidity regulation part, and the final moisture content after the damping device is regulated through second width of cloth material humidity regulation part.
The present invention relates to a kind of adjusting device that is used to implement this method equally.
Background technology
Such known method is very complicated with device, and uses at least two gage frame that have humidity sensor, both before damping device, also after damping device, measures the humidity of fiber material web.In other known method, cancelled measurement to the humidity before the damping device.At this, the shortcoming of existence is that fluctuation appears in the Q factor of fiber material web, and impairs the quality of fiber material web.
Summary of the invention
Therefore, task of the present invention is to provide a kind of and be used to regulate solution fiber material web humidity, with low cost, and the quality of fiber material web is not had adverse effect.
This task is through a kind of when being used on the paper machine with moulding section, press portion, drying nest, damping device and humidity sensor making fiber material web; The method that the final moisture content of fiber material web is regulated realizes; Fiber material web is meant paper web material, board web material or web of tissue paper material especially; Wherein, the humidity before the damping device is regulated through first width of cloth material humidity regulation part, and the final moisture content after the damping device is regulated through second width of cloth material humidity regulation part.At this; To the present invention importantly; The humidity actual value of first width of cloth material humidity regulation part is measured through the first virtual humidity sensor; And the actual value of the final moisture content of second width of cloth material humidity regulation part is measured through the physics humidity sensor after the damping device, and regulates through the humidification effect that changes damping device with the mode that depends on the damping device humidity implementing virtual reality value of passing through the second virtual humidity sensor measuring before.
The inventor recognizes that on the one hand except other factors, the quality of fiber material web also depends on the damping device humidity level of fiber material web before.On the other hand, the inventor has found and has measured damping device humidity before, but need not the solution that complicated measuring technique is measured said humidity.The humidity of fiber material web is confirmed through so-called virtual humidity sensor before the damping device.At this, the measured value of being measured is not directly measured by the measuring instrument of costliness, but calculates through known measured value.Through this solution, the humidity level of fiber material web can adjust in view of the constant quality of fiber material web before the damping device, and amount of water is also defined to minimum of a value.The advantage of doing like this is, need not for add too much water expend drying energy.Virtual-sensor is also referred to as soft sensor usually.Soft sensor virtual-sensor in other words can constitute with all kinds.Said soft sensor can be based on multiplicative model, statistical model, neutral net or the incompatible enforcement of these modal sets.Be according to another advantage of solution of the present invention: along the stabilisation faster of humidity change profile on the paper machine traffic direction.When this point is particularly started when paper machine starts or after interrupting once more, has advantage.
According to what humidity regulation method of the present invention related to be, to the adjusting of fiber material web along the humidity change profile of paper machine traffic direction (MD).But can humidity cross directional variations profile adjustment (CD) be superimposed on said adjusting.
In having the formation scheme of advantage; The first virtual humidity sensor is measured the actual value 6.01 of humidity by the difference between the measured value 6.11 of the final moisture content of physics humidity sensor 6 and the following rated value difference, and said rated value difference is meant the rated value difference between final moisture content rated value 6.10 and the damping device 5 humidity rated value 6.00 before after the damping device 5.At this, advantage is, first width of cloth material humidity regulation part is regulated the humidity before the damping device 5 6.01 as regulating quantity, and do not receive the adverse effect of damping device adjustment stroke.The situation that this point comes to this when final moisture content uses as regulating quantity.
In another actual embodiment, the second virtual humidity sensor is measured the damping device 5 implementing virtual reality value 6.01 of humidity before by the difference of the measured value 6.11 of the final moisture content of humidity that is applied through damping device 5 and physics humidity sensor 6.
Suitable is that the difference of the rated value 6.00 of the humidity before the damping device 5 and the implementing virtual reality value 6.01 of the humidity before the damping device 5 is used to influence the humidification effect of damping device 5 in second width of cloth material humidity regulation part 2.
In having the improvement project of advantage, in second width of cloth material humidity regulation part 2, the procedure parameter of manufacture process is used to measure the damping device 5 implementing virtual reality value 6.01 of humidity before.Thus, can under the situation of different procedure parameters, help humidification and the influence of humidity 6.11 pair fiber material web qualities of good and constant article quality before the damping device 5.
In an actual embodiment, use at least one in the following procedure parameter: speed of production, width of cloth material width, interrupt information, the steam consumption in drying nest 4; Dehydration conditions in moulding section or press portion 3; In press portion 3 or the humidity value of web of fiber material after it, the perhaps material behavior of fibrous material is in order to calculate the implementing virtual reality value 6.01 of humidity before the damping device.
Of the present invention be used to solve said task relate on the other hand be, a kind ofly be used to implement adjusting device by the said method of claim 1, said adjusting device has: first regulon 10 that is used to regulate humidity 6.01 before the damping device 5; With second regulon 20 that is used to regulate final moisture content 6.11 after the damping device 5; And the physics humidity sensor 6 that is used to measure final moisture content 6.11.This device is characterised in that; Be that first regulon is assigned first computing unit 15 that is used to calculate the first implementing virtual reality value 6.01 of humidity before the damping device 5; And second regulon 20 comprises: be used to calculate second computing unit 28 of the humidity second implementing virtual reality value 6.01 before the damping device 5, and with the connector of the process wizard system that is used for the read-in process parameter.
In a kind of suitable embodiment, that damping device is embodied as is known, have the nozzle damping device of the nozzle that is provided with transverse to the fiber material web traffic direction of embarking on journey in a large number.
Suitable is, on the fiber material web traffic direction, is provided with a plurality of nozzle row in succession, and wherein, the nozzle of adjacent lines is layout each other in the horizontal with staggering.This makes can apply spraying equably.
Damping device preferably utilizes water to come work, and particularly using under the situation of multi-component nozzle, utilizes water-air mixture to come work.At this, each nozzle water of specified rate in advance is sprayed onto on the fiber material web.
The nozzle damping device can be implemented like this, that is, each nozzle is sprayed onto the water of identical constant amount (for example per minute rise number) on the fiber material web.Thus, the humidity level of adjustment fiber material web.
In another embodiment, the nozzle damping device is constructed like this, that is, nozzle can be adjusted through the width of fiber material web to the subregion for the amount of passing through of water or water-air.Thus, can revise the moistening band on the fiber material web.In this case, can be superimposed with adjustable constant amount by the different amount in zone.
Damping device can be gone up in the drying nest set inside endways, perhaps externally is set directly at after the drying nest.
Between rolling piece and damping device, be provided with the humidity sensor that is used to measure the fiber material web final moisture content.This humidity sensor can be fixedly arranged or arrange transverse to the traffic direction cross sliding type ground of fiber material web.
Description of drawings
Other features and advantages of the present invention are consulted the accompanying drawing description of a preferred embodiment by the back and are obtained.
Wherein:
Fig. 1 illustrates the synoptic diagram of the paper machine with the regulating system that is the signal form.
The specific embodiment
In unique accompanying drawing, the part of paper machine is shown with sketch map.The fiber material web quilt gets into and passes drying nest 4 from unshowned moulding section via press portion 3 guiding.Subsequently, this fiber material web passes damping device 5, and this fiber material web is wound into paper roll through rolling piece 7 afterwards.Damping device 5 is embodied as known nozzle damping device, and this nozzle damping device has the nozzle of embarking on journey in a large number and arranging transverse to the traffic direction of fiber material web.Suitable is, on the traffic direction of fiber material web, one after the other is provided with a plurality of nozzle row each other, and wherein, the nozzle of adjacent lines is layout each other in the horizontal with staggering.This makes and applies spraying equably.Damping device 5 preferably utilizes water to come work, and particularly using under the situation of multi-component nozzle, utilizes water-air mixture to come work.At this, each nozzle water of specified rate in advance is sprayed onto on the fiber material web.The nozzle damping device can be implemented like this, that is, each nozzle is sprayed onto the water of identical constant amount (for example per minute rise number) on the fiber material web.Thus, the humidity level of adjustment fiber material web.In another kind of embodiment, the nozzle damping device is constructed like this, that is, nozzle can be adjusted through the width of fiber material web to the subregion for the amount of passing through of water or water-air.Thus, can revise moistening band on the fiber material web.In this case, can be to being superimposed with adjustable constant amount by the different amount in zone.Damping device 5 can be after drying nest 4 set inside go up endways or externally are set directly at drying nest 4.Between rolling piece 7 and damping device 5, be provided with the humidity sensor 6 that is used to measure fiber material web final moisture content 6.11.Humidity sensor can be fixedly arranged or arrange transverse to the traffic direction cross sliding type ground of fiber material web.For regulating the humidity 6.1 of fiber material web, be provided with two width of cloth material humidity regulation parts 1,2.Utilize first width of cloth material humidity regulation part 1 that the humidity 6.0 of fiber material web before the damping device 5 is adjusted on the humidity rated value of predesignating 6.0.First width of cloth material humidity regulation part 1 comprises humidity regulation part 10, this humidity regulation part 10 from computing unit 15 obtain to calculate damping device 5 before humidity actual value 6.01.For calculating, computing unit 15 obtains final moisture content actual value 6.11 from physics humidity sensor 6.For obtaining this final moisture content actual value 6.11, from measured final moisture content actual value 6.11, deduct the difference between the final moisture content rated value 6.10 and humidity rated value 6.00 before the damping device 5.Mensuration to the humidity rated value of humidity regulation part 10 is carried out in a similar fashion.In computing unit 14, from final moisture content rated value 6.10, deduct the difference between the final moisture content rated value 6.10 and humidity rated value 6.00 before the damping device 5.Under specified/actual deviation situation of passing through 10 discoveries of humidity regulation part, will be used in the present embodiment that the dry cylinder steam of drying nest 4 is supplied with the conditioning signal that exerts an influence and be sent to manipulation logic circuit 11 and steam pressure reduction part 12 and be sent to steam pressure cascade part.
The final moisture content 6.1 of 2 pairs of fiber material webs of second width of cloth material humidity regulation part is regulated.At this; The actual value 6.11 of final moisture content is able to measure through physics humidity sensor 6 after the damping device 5; And under the situation of the humidity implementing virtual reality value 6.01 of passing through second virtual-sensor mensuration before depending on damping device 5, regulate through the humidification effect that changes damping device 5.Carry out in the computing unit that is determined at regulon 20 28 to the implementing virtual reality value 6.01 of the humidity before the damping device 5.For this reason, from measured final moisture content 6.11, remove the humidity share that applies through damping device 5.This humidity share is able to measure by the actual water consumption of beaming back from water station 25 through signal adapter 24, and is continued to be sent to computing unit 28.In advance, with respect to the procedure parameter from process wizard system 27 of manufacture process.Thus, can under the situation of different procedure parameters, help humidification and the influence of humidity 6.11 pair fiber material web qualities of good and constant article quality before the damping device.For example use at least one in the following procedure parameter: speed of production, width of cloth material width, interrupt information, the steam consumption in drying nest 4; Dehydration conditions in moulding section or press portion 3; The humidity value of the web of fiber material in press portion 3 or after press portion 3; The perhaps material behavior of fibrous material.In computing unit 29, come calculated difference by the implementing virtual reality value 6.01 of humidity before the rated value 6.00 of humidity before the damping device 5 and the damping device 5, and flow to the adjuster 22 that comprises ramp function (Rampenfunktion) as regulating quantity.The output of adjuster 22 is connected with signal adapter 23; Signal adapter 23 converts regulator signal to physics through amount (per minute rise number); And control water station 25 like this; Make damping device 5 produce following humidification effect, reduce or eliminate the specified/actual deviation of the implementing virtual reality value 6.01 of humidity.Water station can add with cross directional variations profile adjustment unit 26 and be connected, and this cross directional variations profile adjustment unit 26 is differently to control nozzle to the distribute ground mode that exerts an influence of the humidity cross directional variations of fiber material web by the zone.
Reference numerals list
1 first width of cloth material humidity regulation part
2 second width of cloth material humidity regulation parts
3 press portion
4 drying nests
5 damping devices
6 humidity sensors
6.0 the humidity before the damping device
6.00 the humidity rated value before the damping device
6.01 the humidity actual value before the damping device
6.1 the final moisture content after the damping device
6.10 the final moisture content rated value after the damping device
6.11 the final moisture content actual value after the damping device
7 rolling pieces
The humidity regulation part along the paper machine direction of motion (MD) of 10 paper machines
11 handle logic circuit
12 steam pressures reduce part
13 steam pressure cascade parts
The used computing unit of humidity rated value before 14 damping devices
The used computing unit of humidity actual value before 15 damping devices
20 regulons
21 rated value difference formula computing units
22 adjusters
23 signal adapters
24 signal adapters
25 water stations
26 cross directional variations profile adjustment unit
27DCS (process wizard system)
The computing unit of virtual humidity before 28 damping devices
The computing unit of virtual humidity and rated value deviation before 29 damping devices.
Claims (7)
1. the method for when being used on paper machine, making fiber material web the final moisture content (6.1) of fiber material web being regulated; Said paper machine has moulding section, press portion (3), drying nest (4), damping device (5) and humidity sensor (6); Said fiber material web is meant paper web material, board web material or web of tissue paper material especially; Wherein, Said damping device (5) humidity (6.0) is before regulated through first width of cloth material humidity regulation part (1); And said damping device (5) final moisture content (6.1) is afterwards regulated through second width of cloth material humidity regulation part (2); It is characterized in that the actual value (6.01) of the humidity of said first width of cloth material humidity regulation part (1) is measured through the first virtual humidity sensor, and said damping device (5) afterwards the actual value (6.11) of the final moisture content of second width of cloth material humidity regulation part (2) measure through said physics humidity sensor (6); And under the situation that depends on said damping device (5) the humidity implementing virtual reality value (6.01) of passing through the second virtual humidity sensor measuring before, regulate through the humidification effect that changes said damping device (5).
2. by the described method of claim 1; It is characterized in that; The said first virtual humidity sensor is measured the actual value (6.01) of humidity by the difference between the measured value (6.11) of the final moisture content of said physics humidity sensor (6) and the following rated value difference, and said rated value difference is meant said damping device (5) final moisture content rated value (6.10) and the rated value difference between said damping device (5) the humidity rated value (6.00) before afterwards.
3. by claim 1 or 2 described methods; It is characterized in that the said second virtual humidity sensor is measured said damping device (5) the implementing virtual reality value (6.01) of humidity before by the difference between the measured value (6.11) of the final moisture content of humidity that applies through said damping device (5) and said physics humidity sensor (6).
4. by one of aforementioned claim described method; It is characterized in that the difference between the implementing virtual reality value (6.01) of the rated value (6.00) of said damping device (5) humidity before and said damping device (5) humidity before is used to influence the humidification effect of said damping device (5) in said second width of cloth material humidity regulation part (2).
5. by one of aforementioned claim described method, it is characterized in that the procedure parameter of manufacture process is used to measure said damping device (5) humidity implementing virtual reality value (6.01) before in said second width of cloth material humidity regulation part (2).
6. by the described method of claim 5, it is characterized in that, use at least one in the following procedure parameter: speed of production, width of cloth material width, interrupt information, the steam consumption in said drying nest (4); Dehydration conditions in said moulding section or said press portion (3); In said press portion (3) or at the humidity value of the said afterwards web of fiber material of said press portion (3); The perhaps material behavior of fibrous material.
7. be used to implement adjusting device according to the said method of claim 1; Said adjusting device has: be used to regulate damping device (5) before humidity (6.01) first regulon (10) and be used to regulate damping device (5) second regulon (20) of final moisture content (6.11) and the physics humidity sensor (6) that is used to measure final moisture content (6.11) afterwards
It is characterized in that,
Be assigned first computing unit (15) that is used to calculate said damping device (5) the humidity first implementing virtual reality value (6.01) before for said first regulon (10); And said second regulon (20) comprising: be used to calculate said damping device (5) second computing unit (28) of the second implementing virtual reality value (6.01) of humidity before, and with the connector of the process wizard system that is used for the read-in process parameter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201010039093 DE102010039093A1 (en) | 2010-08-09 | 2010-08-09 | Method and device for controlling the moisture of a material web |
| DE102010039093.3 | 2010-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102373647A true CN102373647A (en) | 2012-03-14 |
Family
ID=44533877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102288274A Pending CN102373647A (en) | 2010-08-09 | 2011-08-09 | Method and device for regulating the humidity of material web |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2418321B1 (en) |
| CN (1) | CN102373647A (en) |
| DE (1) | DE102010039093A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603074A (en) * | 2013-10-24 | 2014-02-26 | 南通江潮纤维制品有限公司 | Moisture absorption room for super-absorbent fibers and moisture absorption process of super-absorbent fibers |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017127932A1 (en) * | 2017-11-27 | 2019-05-29 | Voith Patent Gmbh | method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1430264A (en) * | 1972-03-08 | 1976-03-31 | Industrial Nucleonics Corp | Control of fibrous sheet making machines |
| CN1251629A (en) * | 1997-03-27 | 2000-04-26 | 韦尔梅特公司 | Method for control of curl of paper in dryer section of paper machine and paper or board machine |
| WO2001000924A1 (en) * | 1999-06-24 | 2001-01-04 | Metso Paper Automation Oy | Method and apparatus for controlling a moving paper web |
| US6179964B1 (en) * | 1996-08-30 | 2001-01-30 | Voith Sulzer Papiermaschinen Gmbh | Method and control device for paper web profile control with plurality of sensors |
| EP1097269B1 (en) * | 1998-07-10 | 2004-03-24 | Metso Paper, Inc. | Method and apparatus for manufacturing surface-treated printing paper |
| WO2004025023A1 (en) * | 2002-09-10 | 2004-03-25 | Voith Paper Patent Gmbh | Device and method for producing and/or treating a fibrous strip |
| CN1662704A (en) * | 2002-06-19 | 2005-08-31 | 美卓纸业公司 | Method, system and calender for controlling the moisture profile and/or moisture gradient of a paper web, and a web |
| CN101048547A (en) * | 2004-11-12 | 2007-10-03 | 美卓造纸机械公司 | Method and system in a paper machine and software product |
-
2010
- 2010-08-09 DE DE201010039093 patent/DE102010039093A1/en not_active Withdrawn
-
2011
- 2011-07-20 EP EP20110174640 patent/EP2418321B1/en not_active Not-in-force
- 2011-08-09 CN CN2011102288274A patent/CN102373647A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1430264A (en) * | 1972-03-08 | 1976-03-31 | Industrial Nucleonics Corp | Control of fibrous sheet making machines |
| US6179964B1 (en) * | 1996-08-30 | 2001-01-30 | Voith Sulzer Papiermaschinen Gmbh | Method and control device for paper web profile control with plurality of sensors |
| CN1251629A (en) * | 1997-03-27 | 2000-04-26 | 韦尔梅特公司 | Method for control of curl of paper in dryer section of paper machine and paper or board machine |
| EP1097269B1 (en) * | 1998-07-10 | 2004-03-24 | Metso Paper, Inc. | Method and apparatus for manufacturing surface-treated printing paper |
| WO2001000924A1 (en) * | 1999-06-24 | 2001-01-04 | Metso Paper Automation Oy | Method and apparatus for controlling a moving paper web |
| CN1662704A (en) * | 2002-06-19 | 2005-08-31 | 美卓纸业公司 | Method, system and calender for controlling the moisture profile and/or moisture gradient of a paper web, and a web |
| WO2004025023A1 (en) * | 2002-09-10 | 2004-03-25 | Voith Paper Patent Gmbh | Device and method for producing and/or treating a fibrous strip |
| CN101048547A (en) * | 2004-11-12 | 2007-10-03 | 美卓造纸机械公司 | Method and system in a paper machine and software product |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603074A (en) * | 2013-10-24 | 2014-02-26 | 南通江潮纤维制品有限公司 | Moisture absorption room for super-absorbent fibers and moisture absorption process of super-absorbent fibers |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2418321A1 (en) | 2012-02-15 |
| DE102010039093A1 (en) | 2012-02-09 |
| EP2418321B1 (en) | 2013-09-11 |
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Application publication date: 20120314 |