CN101975597B - Experimental determining method of retention in tobacco material roller in processing flow - Google Patents

Experimental determining method of retention in tobacco material roller in processing flow Download PDF

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CN101975597B
CN101975597B CN2010102897795A CN201010289779A CN101975597B CN 101975597 B CN101975597 B CN 101975597B CN 2010102897795 A CN2010102897795 A CN 2010102897795A CN 201010289779 A CN201010289779 A CN 201010289779A CN 101975597 B CN101975597 B CN 101975597B
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cylinder
mass flow
materials
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electronic balance
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CN101975597A (en
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朱文魁
陈良元
陈孚
刘朝贤
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Zhengzhou Tobacco Research Institute of CNTC
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Zhengzhou Tobacco Research Institute of CNTC
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Abstract

The invention discloses an experimental determining method of the retention in a tobacco material roller in the processing flow, comprising the following steps of: continuously determining the real-time mass flow of materials flowing through the front part and the rear part of the roller by using electronic belt scales which are respectively arranged at the front end and the rear end of roller equipment; acquiring and recording the mass flow data determined by the electronic belt scales by a data acquisition system; continuously acquiring the mass flow information of the materials at the front end and the rear end of the roller at the material head or tail stage; meanwhile, determining the delay time that the materials are transmitted to a roller inlet from the preposed electronic belt scale and transmitted to the post-positioned electronic belt scale from a roller outlet; acquiring the mass flow information of the materials at the roller outlet according to the mass flow information of the materials at the front end and the rear end of the roller and corresponding delay time; and calculating the retention of the materials in the roller at certain moment by the data acquisition system according to the flow of the materials at the inlet and the outlet of the roller at different moments.

Description

The measuring method of hold-up in a kind of tobacco cylinder process tube
Technical field
The present invention relates to the tobacco manufacture field, relate in particular to the measuring method of hold-up in a kind of tobacco cylinder process tube.
Background technology
Drum apparatus is a kind of process equipment that generally adopts in the unit operationss such as drying, cooling, burning, mixing, humidification.Since have treatment capacity big, can handle advantages such as various materials and operation cost are cheap relatively flexibly, in the tobacco cutting process, the cylinder kind equipment is extensive use of in manufacturing procedures such as loosening and gaining moisture, leaves moisting, baking silk, flavoring and casings.
Cylinder material lagging amount refers to the material volume of holding of streams cylinder inside when the cylinder process equipment.Cylinder material lagging amount is the important parameter of reflection production run intermediate roll equipment machining load.In the tobacco cutting process, cylinder material lagging amount not only influences the caloic transmittance process between tobacco and barrel and machining medium, influence the residence time (the Y. Song of material in tube simultaneously, J. Thibault, T. Kudra. Dynamic Characteristics of Solids Transportation in Rotary Dryers. Drying Technology, 21:5,755-773), thereby be to influence the key factor of tobacco cutting process in the goods stable processing quality.
Under the metastable condition of supplied materials flow, it is constant relatively that the inventory of cylinder inside keeps, cylinder material lagging amount is generally determined by direct determination method, promptly under drum rotation speed, inclination angle and the mass flow condition set, when cylinder is imported and exported the mass flow stable and consistent, the closed drum charging system is all collected weighing with the cylinder materials inside then.Because this method needs shutdown operation, and need material in the cylinder all by artificially collecting weighing, complex operation.Simultaneously, to the mass flow continually varying production phase, as stub bar, material tail stage, because cylinder material lagging amount changes continuously with the variation of inlet feed flow, directly determination method can't be determined the change information of above-mentioned continuous process cylinder material lagging amount.
Summary of the invention
Purpose of the present invention is just at the shortcoming that exists in the above-mentioned technology, and a kind of measuring method of tobacco cylinder process hold-up is provided.Method is simple for this, can be used for determining ordinary production and stub bar, material tail stage different tobacco cylinder constantly hold-up, for the control of optimization of enterprises technological process provides basic method of testing.
Purpose of the present invention can realize by following technique measures:
Promptly be respectively arranged with belted electronic balance in the front-end and back-end of roller equipment with the real-time mass rate of METHOD FOR CONTINUOUS DETERMINATION streams before and after cylinder, the mass rate data that belted electronic balance is measured are carried out acquisition and recording by data acquisition system (DAS).In stub bar or material tail stage, continuous acquisition drum front end and rear end mass flow of materials information are measured material simultaneously and are transferred to cylinder inlet and material are transferred to rearmounted belted electronic balance from drum outlet delay time from preposition belted electronic balance; According to drum front end and rear end mass flow of materials information and corresponding delay time, can obtain the mass flow of materials information that cylinder is imported and exported; By the mass flow of difference cylinder import and export constantly, data acquisition system (DAS) can be calculated the hold-up of determining a certain moment cylinder materials inside.
Measuring method of the present invention comprises the steps:
Specifically, measuring method of the present invention comprises the assay method of stub bar stage tobacco cylinder hold-up and the assay method of material tail stage tobacco cylinder hold-up;
The assay method of wherein said stub bar stage tobacco cylinder hold-up comprises the steps:
Begin to pick up counting constantly by the preposition belted electronic balance of the cylinder that is arranged on the roller equipment front end from material, the preposition belted electronic balance of log-on data acquisition system continuous recording is at the mass flow of materials F of different chronometries simultaneously 1(t) and be arranged on the mass flow of materials F that the rearmounted belted electronic balance of cylinder of roller equipment front end is measured 2(t);
The record start material from by the preposition belted electronic balance of cylinder to the delay time t that enters cylinder 1, and material is from leaving roller equipment to t time delay by rearmounted belted electronic balance 2
Treat mass flow that rearmounted belted electronic balance is measured reach stable after, stop timing and data acquisition;
Data acquisition system (DAS) is to the mass flow of materials F of acquisition and recording 1(t) and F 2(t), determine stub bar stage any time t cylinder material lagging amount Q (t) by computing, its treatment step is as follows:
A, by delay time t 1The different F of mass flow of materials constantly that record with the preposition belt conveyer scale of cylinder 1(t), can determine the different inlet of cylinder constantly mass flow of materials, i.e. F 1(t-t 1);
B, by delay time t 2The different moment mass flow of materials F that record with the rearmounted belt conveyer scale of cylinder 2(t), can determine different drum outlet mass flow of materials, i.e. F constantly 2(t+t 2);
C, by difference cylinder import constantly and outlet material mass rate, can determine t cylinder material lagging amount Q (t) constantly, t〉t 1The time:
Q(t)=
Figure 933896DEST_PATH_IMAGE001
T<t 1The time, material does not enter cylinder as yet, and cylinder material lagging amount is zero;
The determination step of material tail stage tobacco cylinder hold-up is as follows:
The a certain moment in steady production stage before the material tail stage picks up counting, simultaneously the mass flow of materials F of the preposition belted electronic balance mensuration of log-on data acquisition system continuous recording cylinder 1(t) and the mass flow of materials F that gathers of the rearmounted belted electronic balance of cylinder 2(t);
The record final material from by the preposition belted electronic balance of cylinder to the delay time t that enters cylinder 1, and from leaving cylinder to t time delay by the rearmounted belted electronic balance of cylinder 2
After the mass flow that the rearmounted belt conveyer scale of cylinder is measured is shown as zero, write down at this moment t constantly 3, stop timing and data acquisition simultaneously;
Data acquisition system (DAS) is to the mass flow of materials information F of acquisition and recording 1(t) and F 2(t), by computing material tail stage any time t cylinder material lagging amount Q (t), its treatment step is as follows:
A, by the different mass flow of materials F1 (t) constantly that delay time t1 and the preposition belt conveyer scale of cylinder record, can determine the different inlet of cylinders constantly mass flow of materials, be F 1(t-t 1);
B, by delay time t 2The different moment mass flow of materials F that record with the rearmounted belt conveyer scale of cylinder 2(t), can determine different drum outlet mass flow of materials constantly, be F 2(t+t 2);
C, by difference cylinder entrance and exit mass flow of materials constantly, can determine t cylinder material lagging amount constantly, t〉t 1The time:
Q(t)=
Figure 163626DEST_PATH_IMAGE002
T<t 1The time, cylinder material lagging amount is the material lagging amount in ordinary production stage:
Q(t)= ?。
Beneficial effect of the present invention is as follows:
1, this assay method is simple and easy to do, need not shutdown operation and artificially collects material metage;
2, can realize the online in real time of material lagging amount detection in the tube in the throwing process;
3, can determine the continuous change information of stub bar, material tail stage cylinder material lagging amount.
Description of drawings
Fig. 1 is the test unit process flow diagram of the inventive method.
Fig. 2 is a synoptic diagram of determining stub bar stage cylinder material lagging amount.
Fig. 3 is a synoptic diagram of determining material tail stage cylinder material lagging amount.
Embodiment
The present invention is further described below with reference to embodiment (accompanying drawing):
As shown in Figure 1, the present invention is respectively arranged with belted electronic balance to measure the real-time mass rate of streams before and after cylinder in the front-end and back-end of roller equipment, and the mass rate data that belted electronic balance is measured are carried out acquisition and recording by data acquisition system (DAS).
Specifically, measuring method of the present invention comprises the assay method of stub bar stage tobacco cylinder hold-up and the assay method of material tail stage tobacco cylinder hold-up;
The assay method of wherein said stub bar stage tobacco cylinder hold-up comprises the steps:
In the stub bar stage, begin to pick up counting constantly from material, simultaneously the mass flow of materials F of different preposition belted electronic balances of cylinder constantly of log-on data acquisition system continuous recording and the rearmounted belted electronic balance mensuration of cylinder by the preposition belted electronic balance of cylinder 1(t) and F 2(t); By the observed and recorded starting material from by the drum front end belted electronic balance to the delay time t that enters cylinder 1, and from leaving cylinder to t time delay by cylinder rear end belted electronic balance 2Treat mass flow that the rearmounted belted electronic balance of cylinder is measured reach stable after, stop timing and data acquisition, calculate the stub bar stage different cylinder material lagging constantly amount of determining.The stub bar stage, the determining as shown in Figure 2 of cylinder material lagging amount: by delay time t 1The different F of mass flow of materials constantly that record with the preposition belted electronic balance of cylinder 1(t), promptly curve 1, can obtain cylinder inlet mass flow of materials F 1(t-t 1), promptly curve 2; By delay time t 2The different moment mass flow of materials F that record with the rearmounted belt conveyer scale of cylinder 2(t), promptly curve 3, can obtain drum outlet mass flow of materials F 2(t+t 2), promptly curve 4; T〉t 1Cylinder material lagging amount Q (t) constantly is that curve 2 and 4 is at t 1Interval area between the t is , t<t 1Cylinder material lagging amount Q (t) is zero constantly.
The determination step of material tail stage tobacco cylinder hold-up is as follows:
In the material tail stage, a certain moment of stabilization sub stage picks up counting the mass flow of materials F that different preposition belted electronic balances of cylinder constantly of while log-on data acquisition system continuous recording and rearmounted belted electronic balance are measured before from the material tail stage 1(t) and F 2(t); By the observed and recorded final material from by the preposition belted electronic balance of cylinder to the delay time t that enters cylinder 1, and from leaving cylinder to t time delay by the rearmounted belted electronic balance of cylinder 2After the mass flow that the rearmounted belted electronic balance of cylinder is measured is shown as zero, write down at this moment t constantly 3, stop timing and data acquisition simultaneously, calculate the material tail stage different cylinder material lagging constantly amount of determining.The material tail stage, the determining as shown in Figure 3 of cylinder material lagging amount: by delay time t 1The different F of mass flow of materials constantly that record with the preposition belt conveyer scale of cylinder 1(t), promptly curve 1, can obtain cylinder inlet mass flow of materials F 1(t-t 1), promptly curve 2; By delay time t 2The different moment mass flow of materials F that record with the rearmounted belt conveyer scale of cylinder 2(t), promptly curve 3, can obtain drum outlet mass flow of materials F 2(t+t 2), promptly curve 4; T〉t 1Cylinder material lagging amount Q (t) constantly is that curve 2 and 4 arrives (t at t 3-t 2) between interval area, be
Figure 710648DEST_PATH_IMAGE002
, t<t 1Cylinder material lagging amount is the material lagging amount Q (t) in steady production stage constantly, is
Figure 296350DEST_PATH_IMAGE003

Claims (1)

1. the measuring method of hold-up in the tobacco cylinder process tube, it is characterized in that: described method comprises the assay method of stub bar stage tobacco cylinder hold-up and the assay method of material tail stage tobacco cylinder hold-up;
The assay method of wherein said stub bar stage tobacco cylinder hold-up comprises the steps:
Begin to pick up counting constantly by the preposition belted electronic balance of the cylinder that is arranged on the roller equipment front end from material, the preposition belted electronic balance of log-on data acquisition system continuous recording is at the mass flow of materials F of different chronometries simultaneously 1(t) and be arranged on the mass flow of materials F that the rearmounted belted electronic balance of cylinder of roller equipment front end is measured 2(t);
The record start material from by the preposition belted electronic balance of cylinder to the delay time t that enters cylinder 1, and material is from leaving roller equipment to t time delay by rearmounted belted electronic balance 2
Treat mass flow that rearmounted belted electronic balance is measured reach stable after, stop timing and data acquisition;
Data acquisition system (DAS) is to the mass flow of materials F of acquisition and recording 1(t) and F 2(t), determine stub bar stage any time t cylinder material lagging amount Q (t) by computing, its treatment step is as follows:
A, by delay time t 1The different F of mass flow of materials constantly that record with the preposition belt conveyer scale of cylinder 1(t), can determine the different inlet of cylinder constantly mass flow of materials, i.e. F 1(t-t 1);
B, by delay time t 2The different moment mass flow of materials F that record with the rearmounted belt conveyer scale of cylinder 2(t), can determine different drum outlet mass flow of materials, i.e. F constantly 2(t+t 2);
C, by difference cylinder import constantly and outlet material mass rate, can determine t cylinder material lagging amount Q (t) constantly, t〉t 1The time:
Q(t)=?
Figure 2010102897795100001DEST_PATH_IMAGE001
T<t 1The time, material does not enter cylinder as yet, and cylinder material lagging amount is zero;
The determination step of material tail stage tobacco cylinder hold-up is as follows:
The a certain moment in steady production stage before the material tail stage picks up counting, simultaneously the mass flow of materials F of the preposition belted electronic balance mensuration of log-on data acquisition system continuous recording cylinder 1(t) and the mass flow of materials F that gathers of the rearmounted belted electronic balance of cylinder 2(t);
The record final material from by the preposition belted electronic balance of cylinder to the delay time t that enters cylinder 1, and from leaving cylinder to t time delay by the rearmounted belted electronic balance of cylinder 2
After the mass flow that the rearmounted belt conveyer scale of cylinder is measured is shown as zero, write down at this moment t constantly 3, stop timing and data acquisition simultaneously;
Data acquisition system (DAS) is to the mass flow of materials information F of acquisition and recording 1(t) and F 2(t), by computing material tail stage any time t cylinder material lagging amount Q (t), its treatment step is as follows:
A, by delay time t 1The different F of mass flow of materials constantly that record with the preposition belt conveyer scale of cylinder 1(t), can determine the different inlet of cylinder constantly mass flow of materials, be F 1(t-t 1);
B, by delay time t 2The different moment mass flow of materials F that record with the rearmounted belt conveyer scale of cylinder 2(t), can determine different drum outlet mass flow of materials constantly, be F 2(t+t 2);
C, by difference cylinder entrance and exit mass flow of materials constantly, can determine t cylinder material lagging amount constantly, t〉t 1The time:
Q(t)=
Figure 858275DEST_PATH_IMAGE002
T<t 1The time, cylinder material lagging amount is the material lagging amount in ordinary production stage:
Q(t)=
Figure DEST_PATH_IMAGE003
CN2010102897795A 2010-09-25 2010-09-25 Experimental determining method of retention in tobacco material roller in processing flow Active CN101975597B (en)

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