CN114481670A - Calculation compensation algorithm for consumption of chemicals or auxiliary materials of paper machine - Google Patents
Calculation compensation algorithm for consumption of chemicals or auxiliary materials of paper machine Download PDFInfo
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- CN114481670A CN114481670A CN202210184697.7A CN202210184697A CN114481670A CN 114481670 A CN114481670 A CN 114481670A CN 202210184697 A CN202210184697 A CN 202210184697A CN 114481670 A CN114481670 A CN 114481670A
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- 238000004364 calculation method Methods 0.000 title claims abstract description 27
- 239000000463 material Substances 0.000 title claims abstract description 25
- 239000000126 substance Substances 0.000 title claims abstract description 25
- 239000010410 layer Substances 0.000 claims abstract description 36
- 239000002344 surface layer Substances 0.000 claims abstract description 36
- 239000012792 core layer Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
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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
Abstract
The invention discloses a calculation and compensation algorithm for the consumption of chemicals or auxiliary materials of a paper machine, which comprises the following steps: step one, detecting the yield of the paper machine; step two, calculating the surface layer yield; step three, calculating the yield of the core layer; step four, calculating the bottom layer yield; step five, calculating a correction coefficient; sixthly, correcting and compensating the yield; according to the invention, the QCS system is used for detecting and calculating the actual output of the paper machine, then the calculated outputs of the surface layer, the core layer and the bottom layer of the pulp flow box are calculated through the traditional formula, then the correction coefficient is calculated by combining the actual output of the paper machine detected and calculated by the QCS system, and the calculated outputs of the surface layer, the core layer and the bottom layer of the pulp flow box are corrected by using the correction coefficient, so that the error is favorably reduced, the output is more accurately obtained, the problem of inaccurate consumption of chemicals and auxiliary materials caused by large absolute pulp deviation in multilayer pulp calculation is effectively avoided, the resource waste is favorably reduced, and the accurate addition of the auxiliary materials of the chemicals is realized.
Description
Technical Field
The invention relates to the technical field of papermaking, in particular to a calculation and compensation algorithm for the consumption of chemicals or auxiliary materials of a paper machine.
Background
The paper machine refers to various paper product machines, namely, machines for producing and processing household paper and office paper, and the paper machines are various in types and can be divided into paper product forming machines and paper product processing machines, wherein the paper product forming machines comprise: napkin paper machines, toilet paper machines, face tissue paper machines, mini tissue paper machines, hand towel paper machines, nonwoven fabric rewinding machines, towel paper machines, handkerchief paper machines and the like, and the paper processing machinery comprises: rewinding machine, paper cutting machine, splitting machine, etc. the paper forming machine can produce perfect household paper only when used in cooperation with the paper processing machine;
in the paper making process of the paper machine, the usage amount of used chemicals and auxiliary materials is generally calculated according to the yield, and most of calculation formulas are as follows: the chemical usage amount is calculated by the oven dry pulp (flow rate concentration/1000 rate 60), and because the flow rate and the concentration are all on-site process instruments, detection deviation sometimes occurs to cause the oven dry pulp deviation to greatly influence the usage amount of auxiliary materials, unnecessary resource waste is caused, the production cost is increased, meanwhile, the accurate control of the amount of the chemicals and the auxiliary materials is difficult to realize, and the production efficiency is reduced.
Disclosure of Invention
The invention aims to provide a calculation and compensation algorithm for the consumption of paper machine chemicals or auxiliary materials, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a calculation and compensation algorithm for the consumption of paper machine chemicals or auxiliary materials comprises the following steps: step one, detecting the yield of the paper machine; step two, calculating the surface layer yield; step three, calculating the yield of the core layer; step four, calculating the bottom layer yield; step five, calculating a correction coefficient; sixthly, correcting and compensating the yield;
in the first step, firstly, a scanning frame banner detection device in the QCS system is used for scanning the paper machine to obtain the actual yield Q of the paper machine for standby;
in the second step, the flow of the oven dry pulp of the surface layer in the flow box is measured by using the flow indication regulating instrument to obtain the flow Q of the oven dry pulp of the surface layerNoodleThe dry pulp C of the surface layer is obtained by measuring the concentration of the dry pulp C of the surface layer by using a concentration meter for standbyNoodleIs reserved and then the yield Q of the surface layer is calculated1Standby;
in the third step, the flow rate of the oven dry pulp of the core layer in the flow box is measured by using the flow rate indication regulating instrument to obtain the flow rate Q of the oven dry pulp of the core layerCoreThe method comprises the steps of standby, measuring the concentration of the oven-dried pulp of the core layer by using a concentration meter to obtain the oven-dried pulp C of the core layerCoreIs ready for use, and the core yield Q is subsequently calculated2Standby;
in the fourth step, the flow rate of the bottom layer of the oven dry pulp in the flow box is measured by using the flow rate indication regulating instrument to obtain the flow rate Q of the bottom layer of the oven dry pulpBottomFor use later onMeasuring the concentration of the bottom layer oven-dried pulp by using a concentration meter to obtain the concentration C of the bottom layer oven-dried pulpBottomStandby, then calculating to obtain the bottom yield Q3Standby;
in the fifth step, when the actual yield Q of the paper machine obtained in the first step is obtained, the yield Q of the surface layer is respectively obtained in the second step, the third step and the fourth step1Core layer yield Q2And yield of bottom layer Q3Then, using the formula a ═ Q/(Q)1+Q2+Q3) Calculating to obtain a correction proportion coefficient a;
in the sixth step, the calculated yield is compensated and corrected by using the correction proportion coefficient obtained in the fifth step, and the corrected surface layer yield P is respectively calculated1Corrected core throughput P2And corrected bottom layer yield P3And standby, thereby completing the compensation of the calculation of the using amount of the chemicals or auxiliary materials of the paper machine.
Preferably, in the second step, the formula for calculating the yield of the surface layer is Q1＝QNoodle*CNoodle/1000*60。
Preferably, in the third step, the yield of the core layer is calculated by the formula Q2＝QCore*CCore/1000*60。
Preferably, in the fourth step, the yield of the bottom layer is calculated by Q3＝QBottom*CBottom/1000*60。
Preferably, in the sixth step, the formula for calculating the corrected yield of the top layer is P1＝Q1*a。
Preferably, in the sixth step, the calculation formula of the corrected core layer yield is P2＝Q2*a。
Preferably, in the sixth step, the formula for calculating the corrected bottom layer yield is P3＝Q3*a。
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the QCS is used for detecting and calculating the actual yield of the paper machine, then the calculated yields of the surface layer, the core layer and the bottom layer of the pulp flow box are calculated through a traditional formula, then the actual yield of the paper machine is detected and calculated by combining the QCS to obtain the correction coefficient, and the calculated yields of the surface layer, the core layer and the bottom layer of the pulp flow box are corrected by using the correction coefficient, so that errors are reduced, the yield is obtained more accurately, the problem of inaccurate usage of chemicals and auxiliary materials caused by large absolute pulp deviation in calculation of multilayer pulp is effectively avoided, the resource waste is reduced, the economic benefit is improved, the accurate addition of chemical auxiliary materials is realized, and the generation efficiency is improved.
Drawings
FIG. 1 is a schematic view of a QCS system scanning interface according to the present invention;
FIG. 2 is a schematic representation of calculated oven dry stock for a face layer of the present invention;
FIG. 3 is a schematic view of the core layer of the present invention illustrating the calculated absolute dry pulp amount;
FIG. 4 is a schematic view of the bottom layer calculated absolute dry pulp amount of the present invention;
FIG. 5 is a graph illustrating the modified scaling factor for the measured yield of a QCS-based system according to the present invention;
FIG. 6 is a diagram illustrating the corrected result of the present invention;
FIG. 7 is a flow chart of a method of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, an embodiment of the present invention is shown: a calculation and compensation algorithm for the consumption of paper machine chemicals or auxiliary materials comprises the following steps: step one, detecting the yield of the paper machine; step two, calculating the surface layer yield; step three, calculating the yield of the core layer; step four, calculating the bottom layer yield; step five, calculating a correction coefficient; sixthly, correcting and compensating the yield;
in the first step, firstly, a scanning frame banner detection device in the QCS system is used for scanning the paper machine to obtain the actual yield Q of the paper machine for standby;
in the second step, the flow rate of the oven dry pulp of the surface layer in the flow box is measured by using the flow indication adjusting instrument to obtain the flow rate Q of the oven dry pulp of the surface layerNoodleThe dry pulp C of the surface layer is obtained by measuring the concentration of the dry pulp C of the surface layer by using a concentration meter for standbyNoodleIs reserved and then the yield Q of the surface layer is calculated1Standby and the formula for calculating the yield of the surface layer is Q1＝QNoodle*CNoodle/1000*60；
In the third step, the flow rate of the oven dry pulp of the core layer in the flow box is measured by using the flow rate indication regulating instrument to obtain the flow rate Q of the oven dry pulp of the core layerCoreThe method comprises the steps of standby, measuring the concentration of the oven-dried pulp of the core layer by using a concentration meter to obtain the oven-dried pulp C of the core layerCoreIs ready for use, and the core yield Q is subsequently calculated2Standby, and the core layer yield is calculated by the formula Q2＝QCore*CCore/1000*60；
In the fourth step, the flow rate of the bottom layer of the oven dry pulp in the flow box is measured by using the flow rate indication regulating instrument to obtain the flow rate Q of the bottom layer of the oven dry pulpBottomThe concentration of the bottom layer oven-dried pulp is measured by a concentration meter to obtain the concentration C of the bottom layer oven-dried pulpBottomStandby, then calculating to obtain the bottom yield Q3Spare, and the bottom yield is calculated by Q3＝QBottom*CBottom/1000*60；
In the fifth step, when the actual yield Q of the paper machine obtained in the first step is obtained, the yield Q of the surface layer is respectively obtained in the second step, the third step and the fourth step1Core layer yield Q2And yield of bottom layer Q3Then, using the formula a ═ Q/(Q)1+Q2+Q3) Calculating to obtain a correction proportion coefficient a;
in the sixth step, the calculated yield is compensated and corrected by using the correction proportion coefficient obtained in the fifth stepPositive, respectively calculating to obtain corrected surface layer yield P1Corrected core throughput P2And corrected bottom layer yield P3The formula of the corrected surface layer yield is P1＝Q1A, the formula for the corrected core yield is P2＝Q2A, the formula of the corrected bottom layer yield is P3＝Q3A, thereby completing the compensation of the calculation of the amount of the paper machine chemical or auxiliary material.
Based on the above, the present invention has the advantages that when the present invention is used, the QCS system is used for transmitting the hard-wired signals to the DCS system, so as to obtain the real-time yield, the flow indicator and the concentration meter are used for measuring the flow and the concentration of the headbox, the yields of the surface layer, the core layer and the bottom layer of the headbox are obtained through calculation, and the formula a is Q/(Q)1+Q2+Q3) And obtaining a correction coefficient, and correcting the calculated yields of the surface layer, the core layer and the bottom layer of the head box by using the correction coefficient to obtain accurate yields, so that chemicals and auxiliary materials are accurately added, unnecessary resource waste is reduced, and the production efficiency is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (7)
1. A calculation and compensation algorithm for the consumption of paper machine chemicals or auxiliary materials comprises the following steps: step one, detecting the yield of the paper machine; step two, calculating the surface layer yield; step three, calculating the yield of the core layer; step four, calculating the bottom layer yield; step five, calculating a correction coefficient; sixthly, correcting and compensating the yield; the method is characterized in that:
in the first step, firstly, a scanning frame banner detection device in the QCS system is used for scanning the paper machine to obtain the actual yield Q of the paper machine for standby;
in the second step, the flow rate of the oven dry pulp of the surface layer in the flow box is measured by using the flow indication adjusting instrument to obtain the flow rate Q of the oven dry pulp of the surface layerNoodleThe dry pulp C of the surface layer is obtained by measuring the concentration of the dry pulp C of the surface layer by using a concentration meter for standbyNoodleIs reserved and then the yield Q of the surface layer is calculated1Standby;
in the third step, the flow rate of the oven dry pulp of the core layer in the flow box is measured by using the flow rate indication regulating instrument to obtain the flow rate Q of the oven dry pulp of the core layerCoreThe method comprises the steps of standby, measuring the concentration of the oven-dried pulp of the core layer by using a concentration meter to obtain the oven-dried pulp C of the core layerCoreIs ready for use, and the core yield Q is subsequently calculated2Standby;
in the fourth step, the flow rate of the bottom layer of the oven dry pulp in the flow box is measured by using the flow rate indication regulating instrument to obtain the flow rate Q of the bottom layer of the oven dry pulpBottomThe concentration of the bottom layer oven-dried pulp is measured by a concentration meter to obtain the concentration C of the bottom layer oven-dried pulpBottomStandby, then calculating to obtain the bottom yield Q3Standby;
in the fifth step, when the actual yield Q of the paper machine obtained in the first step is obtained, the yield Q of the surface layer is respectively obtained in the second step, the third step and the fourth step1Core layer yield Q2And yield of bottom layer Q3Then, using the formula a ═ Q/(Q)1+Q2+Q3) Calculating to obtain a correction proportion coefficient a;
in the sixth step, the calculated yield is compensated and corrected by using the correction proportion coefficient obtained in the fifth step, and the corrected surface layer yield P is respectively calculated1Corrected core throughput P2And corrected bottom layer yield P3The process is carried out for standby application,thereby completing the compensation of the calculation of the using amount of the chemicals or auxiliary materials of the paper machine.
2. A calculation and compensation algorithm for the amount of paper machine chemicals or auxiliary materials according to claim 1, characterized in that: in the second step, the calculation formula of the yield of the surface layer is Q1＝QNoodle*CNoodle/1000*60。
3. A calculation and compensation algorithm for the amount of paper machine chemicals or auxiliary materials according to claim 1, characterized in that: in the third step, the yield calculation formula of the core layer is Q2＝QCore*CCore/1000*60。
4. A calculation and compensation algorithm for the amount of paper machine chemicals or auxiliary materials according to claim 1, characterized in that: in the fourth step, the yield of the bottom layer is calculated by a formula Q3＝QBottom*CBottom/1000*60。
5. A calculation and compensation algorithm for the amount of paper machine chemicals or auxiliary materials according to claim 1, characterized in that: in the sixth step, the calculation formula of the corrected surface layer yield is P1＝Q1*a。
6. A calculation and compensation algorithm for the amount of paper machine chemicals or auxiliary materials according to claim 1, characterized in that: in the sixth step, the calculation formula of the corrected core layer yield is P2＝Q2*a。
7. A calculation and compensation algorithm for the amount of paper machine chemicals or auxiliary materials according to claim 1, characterized in that: in the sixth step, the calculation formula of the corrected bottom layer yield is P3＝Q3*a。
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI982784A0 (en) * | 1998-12-23 | 1998-12-23 | Valmet Corp | Method of regulating an inlet box in a paper machine / board machine and a construction of an inlet box in a paper machine / board machine |
| CN1417641A (en) * | 2001-10-29 | 2003-05-14 | 伊斯曼柯达公司 | Non-crease imaging element with coated paper base layer |
| CN105040507A (en) * | 2015-06-29 | 2015-11-11 | 新乡新亚纸业集团股份有限公司 | Film-coated base paper and production process thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI982784A0 (en) * | 1998-12-23 | 1998-12-23 | Valmet Corp | Method of regulating an inlet box in a paper machine / board machine and a construction of an inlet box in a paper machine / board machine |
| CN1417641A (en) * | 2001-10-29 | 2003-05-14 | 伊斯曼柯达公司 | Non-crease imaging element with coated paper base layer |
| CN105040507A (en) * | 2015-06-29 | 2015-11-11 | 新乡新亚纸业集团股份有限公司 | Film-coated base paper and production process thereof |
Non-Patent Citations (1)
| Title |
|---|
| 孟德志;汤伟;胡连华;: "板纸机定量水分控制系统解决方案设计", 自动化技术与应用, no. 04 * |
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