CN105996107B - A kind of tobacco quality control method and system that silk is dried based on thin plate - Google Patents
A kind of tobacco quality control method and system that silk is dried based on thin plate Download PDFInfo
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- CN105996107B CN105996107B CN201610436645.9A CN201610436645A CN105996107B CN 105996107 B CN105996107 B CN 105996107B CN 201610436645 A CN201610436645 A CN 201610436645A CN 105996107 B CN105996107 B CN 105996107B
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- outlet
- thin plate
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/04—Humidifying or drying tobacco bunches or cut tobacco
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to a kind of tobacco quality control method and system that silk is dried based on thin plate, the present invention dries the factor of yarn quality by choosing moisture content of outlet and hot blast temperature as influence thin plate, and moisture content of outlet and hot blast temperature are counted；Cylinder temperature setting value is adjusted according to the departure degree subregion of moisture content of outlet actual value and desired value, to realize the control to thin plate drying process middle outlet moisture；Hot blast throttle opening is adjusted according to the departure degree subregion of hot blast temperature actual value and desired value, to realize the control to hot blast temperature in thin plate drying process.The present invention can greatly improve the mass property index of former silk producing procedures, enhancing thin plate cut tobacco drying overcomes and eliminated the ability of abnormal interference, improve process capability, fully ensure that thin plate dries the stability of the hot blast temperature and moisture content of outlet in silk, full automation control is realized, reduces labor intensity, improve product quality.
Description
Technical field
The present invention relates to a kind of tobacco quality control method and system that silk is dried based on thin plate, belong to pipe tobacco production control skill
Art field.
Background technology
In thin plate drying process, the quality index mainly examined is hot blast temperature and moisture content of outlet respectively, according to collecting
Workshop real history data, analysis when the first two Critical to quality present situation.The thin plate baking multiple batches of silk are looked first to go out
The change procedure of saliva point, as shown in Fig. 1-a and Fig. 1-b, there it can be seen that the fluctuation of its moisture content of outlet is more notable, warp
Often the phenomenon of reciprocating vibration is occurred, and amplitude is larger.In thin plate drying process, moisture content of outlet is adjusted by cylinder temperature, by adjusting
The setting value of whole cylinder temperature changes the aperture of steam valve, and then adjusts moisture content of outlet, cylinder temperature setting value by flow, enter saliva
Divide, moisture content of outlet setting value is calculated, obtained along with the PID/feedback value of moisture content of outlet is calculated.However, in actual production
Cheng Zhong, because entrance Moisture stability is poor, the PID/feedback hysteresis quality of moisture content of outlet is again relatively higher, often also needs to middle control behaviour
Make personnel and carry out intervening manually by rule of thumb according to the data variation of moisture content of outlet to adjust, compare moisture content of outlet and cylinder temperature setting value
Regulation change, as shown in Fig. 2-a and Fig. 2-b.There it can be seen that having material since outlet, experience 109 points, i.e., 545 seconds are arrived
Up to desired value, during which the warm setting value of cylinder undergoes from 150-145-140-135-130-135-140-145-150 repeatedly adjusts, adjustment
Not in place, moisture content of outlet increases slower；Relatively low in 157 point discovery moisture content of outlet, cylinder temperature setting value is from 150-148-145-143-
140, stop declining until 200 points or so, 245 points just come back to desired value, during which fluctuate larger, adjustment sluggishness.Therefore, when
The change of placket temperature setting value is relied primarily on manually to be adjusted according to the change of moisture content of outlet, and hysteresis quality is more obvious, causes
The fluctuation of moisture content of outlet is larger.
The change procedure that thin plate dries the multiple batch hot blast temperatures of silk is observed, as shown in Fig. 3-a and Fig. 3-b, can therefrom be seen
Go out, the fluctuation of hot blast temperature is more notable, the phenomenon of reciprocating vibration often occur, and amplitude is larger.It is real in thin plate drying process
It is presently mainly that hot blast temperature is controlled by adjusting hot blast throttle opening, to ensure hot blast temperature in the production process of border
Degree is maintained at a relatively stable interval, further the relation between analysis hot blast throttle opening and hot blast temperature, such as Fig. 4-a
With shown in Fig. 4-b.Therefrom it can be found that the current adjustment to hot blast temperature has an adjustment amount inaccurate, frequently continuous adjustment, mistake
The problem of journey deviation is larger, makes a concrete analysis of as follows：Start initial stage in batch, equipment preheating is not enough, and hot blast initial temperature is just not enough,
The initial position for starting hot blast air door after production is less than normal；Since the 3rd point, continuous adjustment throttle opening 9-12-15-18-21-
24, time span is longer, and adjustment amplitude is less than normal, repeatedly adjusts not in place, causes longer period of time hot blast temperature relatively low；From
132 points start, because higher phenomenon occurs in hot blast temperature, the phenomenon for occurring continuous adjustment throttle opening again, 24-21-18-
15-18-15, repeatedly adjusts not in place, and hot blast temperature also fails to effectively reduce.Therefore the change of current hot blast throttle opening
Rely primarily on operating personnel to adjust with the PID/feedback for managing adjustment and hot blast temperature manually, hysteresis quality is more obvious, causes hot blast
The fluctuation of temperature is larger.
The content of the invention
It is an object of the invention to provide a kind of tobacco quality control method and system that silk is dried based on thin plate, to solve at present
The problem of control of hot blast temperature and moisture content of outlet is not accurate enough in thin plate drying process.
The present invention provides a kind of tobacco quality control method that silk is dried based on thin plate, the control to solve above-mentioned technical problem
Method processed comprises the following steps：
1) factor that moisture content of outlet and hot blast temperature dry yarn quality as influence thin plate is chosen, and to moisture content of outlet and hot blast
Temperature is counted；
2) cylinder temperature setting value is adjusted according to the departure degree subregion of moisture content of outlet actual value and desired value, to realize
Control to thin plate drying process middle outlet moisture；
3) hot blast throttle opening is adjusted according to the departure degree subregion of hot blast temperature actual value and desired value, with reality
Now to the control of hot blast temperature in thin plate drying process.
The step 2) adjustment process it is as follows：
A. the region of variation of moisture content of outlet actual value and the difference of desired value is divided into N number of interval；
B. current moisture content of outlet is gathered, the difference progress interval of the current moisture content of outlet gathered and desired value is sentenced
It is fixed, and according to interval change adjusting cylinder temperature setting value.
The step 3) adjustment process it is as follows：
A. the region of variation of hot blast temperature actual value and the difference of desired value is divided into M interval；
B. current hot blast temperature is gathered, the difference progress interval of the current hot blast temperature gathered and desired value is sentenced
It is fixed, and hot blast throttle opening is adjusted according to interval change.
The difference E (k) of moisture content of outlet actual value and desired value region of variation is divided into A, B ,-B, C ,-C, D ,-D, E and-E
Interval for A area, when herein interval cylinder warm setting value of the difference of nine intervals, moisture content of outlet actual value and desired value ± 0.15
Keep constant；What it is in 0.15-0.2 intervals is B areas, and what it is in 0.2-0.3 intervals is C areas, and what it is in 0.3 to 0.4 interval is D areas, greatly
It is E areas in 0.4, what it is in -0.15 to -0.2 interval is-B areas, and what it is in -0.2 to -0.3 interval is-C areas, -0.3 to -0.4
Interval is-D areas, and what it is less than -0.4 is-E areas.
The region of variation of the actual value of hot blast temperature and desired value is divided into A, B ,-B, C ,-C, D and seven intervals of-D,
The difference of hot blast temperature actual value and desired value is A areas ± 0.8 interval, and what it is in 0.8-1.2 intervals is B areas, in 1.2-1.8 areas
Between for C areas, be D areas more than 1.8, -0.8 to -1.2 it is interval be-B areas, -1.2 to -1.8 it is interval be-C areas, it is small
It is-D areas in -1.8.
The basic value F of the warm setting value of cylinder needs the water L removed to determine in thin plate drying process.
The interval decision rule of the difference of hot blast temperature actual value and desired value is as follows：
If there is two points to fall in A areas in continuous 3 points, judgement is now in A areas；If having fall in B areas at 2 points in continuous 3 points
And more than B areas, then judge to be now in B areas；If having fall more than C areas and C areas in continuous 3 points at 2 points, judgement is now in C
Area；If there is two points to fall in D areas in continuous 3 points, judgement is now in D areas；If there is two points to fall in-B areas in continuous 3 points
And below-B areas, then judge to be now in-B areas；If there are two points to fall below-C areas and-C areas in continuous 3 points, this is judged
When be in-C areas；If there is two points to fall in-D areas in continuous 3 points, judgement is now in-D areas.
Present invention also offers a kind of tobacco quality control system that silk is dried based on thin plate, the control system includes middle control system
System, data acquisition unit and integrated data base, the data acquisition unit are used to gather the factor that influence thin plate dries yarn quality, institute
Stating integrated data base is used to choose the factor that moisture content of outlet and hot blast temperature dry yarn quality as influence thin plate, and to moisture content of outlet
Counted with the qualitative data of hot blast temperature, the central control system is used for the deviation according to moisture content of outlet actual value and desired value
Degree subregion is adjusted to cylinder temperature setting value, to realize the control to thin plate drying process middle outlet moisture, for according to heat
The departure degree subregion of air temperature actual value and desired value is adjusted to hot blast throttle opening, to realize to thin plate drying process
The control of middle hot blast temperature.
The adjustment process of the warm setting value of cylinder is as follows：
A. the region of variation of moisture content of outlet actual value and the difference of desired value is divided into N number of interval；
B. current moisture content of outlet is gathered, the difference progress interval of the current moisture content of outlet gathered and desired value is sentenced
It is fixed, and according to interval change adjusting cylinder temperature setting value.
The adjustment process of hot blast throttle opening is as follows：
A. the region of variation of hot blast temperature actual value and the difference of desired value is divided into M interval；
B. current hot blast temperature is gathered, the difference progress interval of the current hot blast temperature gathered and desired value is sentenced
It is fixed, and hot blast throttle opening is adjusted according to interval change.
The beneficial effects of the invention are as follows:The present invention is used as influence thin plate baking silk quality by choosing moisture content of outlet and hot blast temperature
The factor of amount, and moisture content of outlet and hot blast temperature are counted；According to the departure degree of moisture content of outlet actual value and desired value
Subregion is adjusted to cylinder temperature setting value, to realize the control to thin plate drying process middle outlet moisture；It is real according to hot blast temperature
The departure degree subregion of actual value and desired value is adjusted to hot blast throttle opening, to realize to hot blast temperature in thin plate drying process
The control of degree.The present invention can greatly improve the mass property index of former silk producing procedures, and enhancing thin plate cut tobacco drying overcomes and disappeared
Except the ability of abnormal interference, process capability is improved, fully ensures that thin plate dries the stability of the hot blast temperature and moisture content of outlet in silk,
Full automation control is realized, reduces labor intensity, improve product quality.
Brief description of the drawings
Fig. 1-a are the time series charts of thin plate drying process middle outlet moisture 2；
Fig. 1-b are the time series charts of thin plate drying process middle outlet moisture 3；
Fig. 2-a are the time series charts of thin plate drying process middle outlet moisture；
Fig. 2-b are the time series charts of bowl temperature setting value in thin plate drying process；
Fig. 3-a are the time series charts of hot blast temperature in thin plate drying process；
Fig. 3-b are the hot blast temperature time series charts of C26 in thin plate drying process；
Fig. 4-a are the time series charts of hot blast temperature _ 1 in thin plate drying process；
Fig. 4-b are the time series charts of corresponding with hot blast temperature _ 1 hot blast throttle opening in thin plate drying process；
Fig. 5 is the structural framing schematic diagram for the tobacco quality control system that the present invention dries silk based on thin plate；
Fig. 6 is that the preceding thin plate of present invention application dries silk moisture content of outlet schematic diagram data；
Fig. 7 is that the rear thin plate of present invention application dries silk moisture content of outlet schematic diagram data；
Fig. 8 is that the preceding thin plate of present invention application dries silk hot blast temperature schematic diagram data；
Fig. 9 is that the rear thin plate of present invention application dries silk hot blast temperature schematic diagram data.
Embodiment
The embodiment to the present invention is described further below in conjunction with the accompanying drawings.
A kind of embodiment of tobacco quality control method that silk is dried based on thin plate of the present invention.
For thin plate drying process, issued according to each operation manufacturing technique requirent and State Tobacco Monopoly Bureau《Cigarette system
Make process capability test and appraisal directive/guide》In the process Critical to quality, it is determined that influence thin plate drying process Critical to quality
Influence factor, be shown in Table 1.
Table 1.
The object of specific quality monitoring is shown in Table 2.
Table 2
It can be seen that the Critical to quality in thin plate cut tobacco drying includes moisture content of outlet and hot blast temperature, and influence moisture content of outlet
Emphasis factors include cylinder temperature setting value, steam valve aperture and mass flow, the emphasis factors of influence hot blast temperature include hot
Wind throttle opening and mass flow.The control just to moisture content of outlet and hot blast temperature is illustrated below.
1. pair moisture content of outlet carries out zonal control
The present invention controls moisture content of outlet by the way of zonal control, i.e., according to the inclined of moisture content of outlet actual value and setting value
Cylinder temperature setting value is adjusted from degree subregion.The detailed process to zonal control is described in detail below.
Entrance has after material a period of time after (60 seconds), takes the average value M of entrance moisture data of 1 minute as this batch of logistics
The estimate of entrance moisture, subtracts the desired value of moisture content of outlet, then to need the amount of moisture L removed in the process, if L values are more than
7.5, the basic value F of cylinder temperature setting value is set to 170；Between 7.2 to 7.5, the basic value F of cylinder temperature setting value is set to 165；
Between 6.9 to 7.2, the basic value F of cylinder temperature setting value is set to 160；If the value is between 6.6 to 6.9, by cylinder temperature setting value
Basic value F be set to 155；If the value is between 6.2 to 6.6, cylinder temperature setting value F is set to 150；If the value is less than 6.2, by cylinder
Warm setting value F is set to 145.When moisture content of outlet is more than 12.5, illustrate that there is material outlet, at this moment in two kinds of situation：If moisture after
It is of continuing rising up to moisture content of outlet setting value, then at the time of setting value is reached use following the strategy of stepwise control；If water
Divide the setting value that moisture content of outlet is still not up in 10 points, then start to use zone control tactics at the time of 10th.
By the moisture content of outlet actual value and the difference E (k) of desired value region of variation in thin plate drying process be divided into A, B ,-
The difference of B, C ,-C, D ,-D, E and nine intervals of-E, moisture content of outlet actual value and desired value ± 0.15 it is interval for A areas,
The warm setting value of cylinder keeps constant when this is interval；What it is in 0.15-0.2 intervals is B areas, and what it is in 0.2-0.3 intervals is C areas, is arrived 0.3
0.4 is interval for D areas, is E areas more than 0.4, -0.15 to -0.2 it is interval be-B areas, -0.2 to -0.3 interval be -
C areas, what it is in -0.3 to -0.4 interval is-D areas, and what it is less than -0.4 is-E areas.
Current moisture content of outlet value is gathered, judges interval residing for the difference of current moisture content of outlet value and desired value, often gathers one
Moisture content of outlet value, carries out once interval judgement.It is often to adopt a number that interval, which judges, will carry out once interval judgement, interval is sentenced
The method of determining is, according to currently adopted number, and two numbers before, and co-continuous 3 points judge.According to interval change adjusting cylinder
Warm setting value.
If 1) E (k) is in A areas
If E (k) changes to B areas from A areas, by cylinder temperature setting value+2；If E (k) changes to C areas from A areas, by cylinder temperature setting value
+3；If E (k) changes to D areas from A areas, by cylinder temperature setting value+5；If E (k) changes to-B areas from A areas, by cylinder temperature setting value -2；
If E (k) changes to-C areas from A areas, by cylinder temperature setting value -3；If E (k) changes to-D areas from A areas, by cylinder temperature setting value -5.
If 2) E (k) is in B areas
If E (k) changes to A areas from B areas, cylinder temperature setting value is kept constant；If E (k) changes to C areas from B areas, by cylinder temperature
Setting value+3；If E (k) changes to D areas from B areas, by cylinder temperature setting value+5；If E (k) changes to E areas from B areas, cylinder temperature is set
Value+8；If E (k) changes to-B areas from B areas, by cylinder temperature setting value -5；If continuous 5 points are maintained at B areas, by cylinder temperature setting value+
2；Then point count again.
If 3) E (k) is in C areas
If E (k) changes to A areas from C areas, by cylinder temperature setting value -3；If E (k) changes to B areas from C areas, cylinder temperature is set
Value -1；If E (k) changes to D areas from C areas, by cylinder temperature setting value+3；If E (k) changes to E areas from C areas, by cylinder temperature setting value+5；
If continuous 5 points are maintained at C areas, by cylinder temperature setting value+3；Then point count again.
If 4) E (k) is in D areas
If E (k) changes to A areas from D areas, by cylinder temperature setting value -5；If E (k) changes to B areas from D areas, cylinder temperature is set
Value -3；If E (k) changes to C areas from D areas, by cylinder temperature setting value -2；If E (k) changes to E areas from D areas, by cylinder temperature setting value+3；
If continuous 5 points are maintained at D areas, by cylinder temperature setting value+5；Then point count again.
If 5) E (k) is in E areas
If E (k) changes to B areas from E areas, by cylinder temperature setting value -5；If E (k) changes to C areas from E areas, cylinder temperature is set
Value -3；If E (k) changes to D areas from E areas, by cylinder temperature setting value -2.
If 6) E (k) is in-B areas
If E (k) changes to A areas from-B areas, cylinder temperature setting value is kept constant；If E (k) changes to B areas from-B areas, by cylinder
Warm setting value+5；If E (k) changes to-C areas from-B areas, by cylinder temperature setting value -3；If E (k) changes to-D areas from-B areas, by cylinder
Warm setting value -5；If E (k) changes to-E areas from-B areas, by cylinder temperature setting value -8；If continuous 5 points are maintained at-B areas, by cylinder temperature
Setting value -2；Then point count again.
If 7) E (k) is in-C areas
If E (k) changes to A areas from-C areas, by cylinder temperature setting value+3；If E (k) changes to-B areas from-C areas, cylinder temperature is set
Definite value+1；If E (k) changes to-D areas from-C areas, by cylinder temperature setting value -3；If E (k) changes to-E areas from-C areas, cylinder temperature is set
Definite value -5；If continuous 5 points are maintained at-C areas, by cylinder temperature setting value -3；Then point count again.
If 8) E (k) is in-D areas
If E (k) changes to A areas from-D areas, by cylinder temperature setting value+5；If E (k) changes to-B areas from-D areas, cylinder temperature is set
Definite value+3；If E (k) changes to-C areas from-D areas, by cylinder temperature setting value+2；If E (k) changes to-E areas from-D areas, cylinder temperature is set
Definite value -3；If continuous 5 points are maintained at-D areas, by cylinder temperature setting value -5；Then point count again.
If 9) E (k) is in-E areas
If E (k) changes to-B areas from-E areas, by cylinder temperature setting value+5；If E (k) changes to-C areas from-E areas, cylinder temperature is set
Definite value+3；If E (k) changes to-D areas from-E areas, by cylinder temperature setting value+2.
2. hot blast throttle opening is adjusted according to the departure degree subregion of hot blast temperature actual value and desired value.
Incipient stage:Judge that production starts with flow, it is desirable to which every batch of beginning first sets the desired value of hot blast temperature, if being set to
110, then initial valve opening is 30, if being set to 115, initial valve opening is 65.
The region of variation of the actual value of hot blast temperature and desired value is divided into A, B ,-B, C ,-C, D and seven intervals of-D,
The difference of hot blast temperature actual value and desired value is A areas ± 0.8 interval, and what it is in 0.8-1.2 intervals is B areas, in 1.2-1.8 areas
Between for C areas, be D areas more than 1.8, -0.8 to -1.2 it is interval be-B areas, -1.2 to -1.8 it is interval be-C areas, it is small
It is-D areas in -1.8.
Hot blast temperature often adopts a number, will carry out once interval judgement, is opened according to interval change adjustment blender door
Degree, interval decision method is, according to currently adopted number, and two numbers before, and co-continuous 3 points judge：If in continuous 3 points
There are two points to fall in A areas, then judge to be now in A areas；If there are two points to fall more than B areas and B areas in continuous 3 points, judge
It is now in B areas；If there is two points to fall more than C areas and C areas in continuous 3 points, judgement is now in C areas；If in continuous 3 points
There are two points to fall in D areas, then judge to be now in D areas；If there are two points to fall below-B areas and-B areas in continuous 3 points, sentence
Surely-B areas are now in；If there is two points to fall below-C areas and-C areas in continuous 3 points, judgement is now in-C areas；If even
There are two points to fall in-D areas in continuous at 3 points, then judge to be now in-D areas.
1) the initial interval for A areas (middle area) of normal phase is assumed
If continuing to judge to be in A areas, do not adjusted in interval herein；If it is determined that now having changed to B areas from A areas, subtract
Small throttle opening 3；When judging now to have changed to-B areas from A areas, increase throttle opening 3；If it is determined that now changing from A areas
C areas have been arrived, have reduced blender door aperture 5；When judging now to have changed to-C areas from A areas, increase blender door aperture 5；If
Judge now to have changed to D areas from A areas, reduce blender door aperture 10；When judge now changed to-D areas from A areas,
Increase blender door aperture 10；If all judge in A areas, and continuous 5 points of increases, reduce throttle opening 2 at continuous 5 points；If continuous 5 points
All judge in A areas, and continuous 5 points of reductions, increase throttle opening 2.
2) when judgement previous moment is in B areas
If it is determined that now having changed to A areas from B areas, throttle opening is constant；If it is determined that now having changed to C from B areas
Area, reduces throttle opening 3；If it is determined that now having changed to D areas from B areas, reduce throttle opening 5；If it is determined that being changed to from B areas
- B ,-C ,-D areas, throttle opening difference+5 ,+5 ,+10；If in B areas, reduce throttle opening 3 at continuous 3 points.
3) when judgement previous moment is in C areas
If it is determined that now having changed to A areas from C areas, increase throttle opening 3；If it is determined that now having changed to B from C areas
Area, throttle opening is constant；If it is determined that now having changed to D areas from C areas, reduce throttle opening 5；If it is determined that being changed to from C areas
- B ,-C ,-D areas, throttle opening difference+5 ,+5 ,+10；If in C areas, reduce throttle opening 3 at continuous 3 points.
4) when judgement previous moment is in D areas
If it is determined that now having changed to A areas from D areas, increase throttle opening 5；If it is determined that now having changed to B from D areas
Area, increases throttle opening 3；If it is determined that now having changed to C areas from D areas, keep throttle opening constant；If it is determined that becoming from D areas
Change to-B ,-C ,-D areas, throttle opening difference+5 ,+5 ,+10；If in D areas, reduce throttle opening 5 at continuous 3 points.
5) when judgement previous moment is in-B areas
If it is determined that now having changed to A areas from-B areas, throttle opening is constant；If it is determined that now being changed to from-B areas
- C areas, increase throttle opening 3；If it is determined that now having changed to-D areas from B areas, increase throttle opening 5；If it is determined that from-B areas
B, C, D area, throttle opening difference -5, -5, -10 are changed to；If in-B areas, increase throttle opening 3 at continuous 3 points.
6) when judgement previous moment is in-C areas
If it is determined that now having changed to A areas from-C areas, reduce throttle opening 3；If it is determined that now being changed to from-C areas
- B areas, throttle opening is constant；If it is determined that now having changed to-D areas from-C areas, increase throttle opening 5；If it is determined that from-C areas
B, C, D area, throttle opening difference -5, -5, -10 are changed to；If in-C areas, increase throttle opening 3 at continuous 3 points.
7) when judgement previous moment is in-D areas
If it is determined that now having changed to A areas from-D areas, reduce throttle opening 5；If it is determined that now being changed to from-D areas
- B areas, reduce throttle opening 3；If it is determined that now having changed to-C areas from-D areas, keep throttle opening constant；If it is determined that
B, C, D area, throttle opening difference -5, -5, -10 have been changed to from-D areas；If in-D areas, increase throttle opening 5 at continuous 3 points.
By said process, the present invention can accurately be controlled to the moisture content of outlet in thin plate drying process and hot blast temperature
System, makes moisture content of outlet and hot blast temperature in production process be maintained at desired value or so fluctuation as far as possible, improves pipe tobacco life
The quality of production.
A kind of embodiment of tobacco quality control system that silk is dried based on thin plate of the present invention
The present invention's dries the tobacco quality control system of silk as shown in figure 5, the control system includes middle control system based on thin plate
System, data acquisition unit and integrated data base, data acquisition unit are used to gather the factor that influence thin plate dries yarn quality, integrated number
It is used to choose the factor that moisture content of outlet and hot blast temperature dry yarn quality as influence thin plate according to storehouse, and to moisture content of outlet and hot blast temperature
The qualitative data of degree is counted, and central control system is used for the departure degree subregion according to moisture content of outlet actual value and desired value to cylinder
Warm setting value is adjusted, to realize the control to thin plate drying process middle outlet moisture, for according to hot blast temperature actual value
Hot blast throttle opening is adjusted with the departure degree subregion of desired value, to realize to hot blast temperature in thin plate drying process
Control.Its course of work is described in detail in the embodiment of method, repeats no more here.
The system can be set up multi-semantic meaning and intelligently determine according to the zoning ordinance and regulation rule designed each Critical to quality
Plan control rule, including data computation model, Controlling model, differentiation screening rule, fuzzy revising model, trend-analyzing model
Deng, it is allowed to intelligent monitoring adjusting module is called to experts database, it is allowed to manually experts database is inquired about, increased newly, is deleted and
Modification.According to the difference of product grade, production technology, environment etc., all kinds of controls that can be to control system in the module are joined
Number carries out necessary setting and adjustment, the control in it can suitably adjust each control rule base in the case that keeper authorizes
Parameter, is modified and optimizes to control rule.
In order that the self-learning function of control system can more meet the demand of operating personnel, can be to self-learning-ruler
The self-learning-rulers such as learning time, data area, study frequency are adjusted, while supporting that self study is according to condition inquired about.
Critical to quality and its influence factor are all included into same relation database, its history number is inquired about any mass property in support
According to the time series performance of, data, and associated every influence factor.
Adaptable control rule is obtained from experts database, the instruction specifically adjusted is sent and influence factor and control parameter is entered
Row adjustment in real time and correction.System is set mainly to be managed to the every basic data and parameter in system, including user
The functions such as rights management, Work Process Management, system journal and system backup, realize task-driven, the quality pipe of process tracking
Reason pattern, while ensureing the security of system, prevents outside intrusion and chance failure from causing loss of data.
The database of the tobacco quality control system for drying silk based on thin plate of the present invention uses large-scale relevant database MS
SQL SERVER 2008, it is single processing, the database of multithreading, compared with multi task process, the database of single thread, is consumed
Hardware resource it is less.SQL Server as the systems of Windows 2000 extension, it is different with other databases, without in order to
It can be run in different operating system and reduce efficiency, it can play Windows 2008 performance completely.
Windows 2003SERVER are a kind of brand-new 32 multiple task operating systems of Microsoft, with multiple network
Management function, supports multiple network agreement, and Windows 2003SERVER are specially designed for client/server configuration
Efficiently, reliable open platform, with the features such as performance is high, opening is strong, safe and reliable and portable strong.Therefore, originally
Invention is used as network operating system from Windows NT4.0 (Windows2008).Middleware is general fastening means
ODBC, developing instrument is using the world today popular object-oriented language VB6.0, C#.
The system combines the respective advantage of existing C/S and B/S patterns, builds the intelligent control system for being suitable for own characteristic
System；Data query in the system, Reports module, user can by B/S mode service inquiry system history runs, due to
The characteristic of B/S structures, for non real-time nature, the data of a large amount of computings, the work of network management personnel can be reduced using B/S structures
The benefit of work amount and client.Data warehouse, expert knowledge library, intelligent decision mechanism etc., it is right due to the characteristic of C/S model
In the access of these mass data, mass data is measured, and the need of work in terms of data-interface uses C/S model.
The system platform is tentatively tested in process of production, access control effect.Test verification process divides respectively
For three phases：First stage, off-line tracking test；Second stage is rectified a deviation online controls test；Phase III, self study is calculated
Method is designed and applied.
By real-time data tracking, control measure, but control mainly are proposed by system operation for off-line tracking test
Measure do not write direct PLC system, but by data analysis and compares and judge whether each time point needs to take control
Whether behavior, the controlling behavior direction taken is correct, and the controlling behavior proposed with system is verified, with preliminary proof system
The controlling behavior taken would is that effectively.
The operation behavior that system is verified in off-line test is effective, then online control test is further carried out, at this
In one test, control measure really will be write by system operation, intellectuality is carried out in real time and is precisely controlled, is regulated and controled with proving program
The stability of accuracy and system, on the basis of tests, to part control parameter in system, the adjustment amplitude of such as valve opening
Deng being finely tuned accordingly, it is to avoid adjustment step occur repeatedly in place or the phenomenon such as overshoot.
After the completion of offline and on-line testing all, current control system just can adapt to production scene and directly should substantially
With, but still may exist because the operating environment of production process, supplied materials, detecting instrument and equipment etc. change and lead
The phenomenon for causing system call interception not in place, also proposed using newest therefore, hurrying to and buying that according to the changing rule of historical data
History lot data carries out self-learning algorithm design, the control system is possessed adaptive ability, specific self-learning algorithm includes
Following four type：
1) the data screening mechanism that self study is calculated is participated in
It is first according to mark partially and Measure of Process Capability nearest history lot data is compared screening, selection mark is partially smaller
Or the higher lot data of process capability participates in self study, secondly selection is closer to the data participation of desired value certainly in batch
Study, and deviate the data of target farther out and will be screened out, to improve the effect of self study.
2) the self study correction algorithm after measurer correction
Moisture content of outlet, the Moisture Meter of entrance moisture, thermometer etc. are after being corrected, and the change of reading can influence accurate control
The order of accuarcy of system according to the adjustment amount of timing measurer, it is necessary to carry out self study amendment.
3) extremal region self study correction algorithm
For the two ends of data distribution, such as supplied materials moisture subregion bigger than normal or less than normal is often not easily controlled
Good region, is often resulting in the insufficient phenomenon of the corresponding data volume in this subregion after data screening, can use to control
The method supplementary data source that the not good historical data of effect processed is modified, then carry out self study amendment.
Running effect compares analysis
To two Critical to qualities of thin plate drying process, the control mode using the present invention makes production process middle outlet
Moisture and hot blast temperature are maintained at desired value or so fluctuation as far as possible, using the data point before and after the precisely controlling system of the present invention
Cloth is compared respectively as Figure 6-9, shown in table 3-6.
The system of table 3. dries silk outlet moisture content procedure quality index using preceding thin plate
The system of table 4. dries silk outlet moisture content procedure quality index using rear thin plate
| Sequence number | Batch number | Average | Offset | Standard deviation | Extreme difference | CPK |
| 1 | 221506TXJ###011 | 12.95 | 0.05 | 0.155 | 0.81 | 2.043 |
| 2 | 221506TXJ###012 | 12.86 | 0.14 | 0.097 | 0.41 | 2.946 |
| 3 | 221506TXJ###013 | 12.90 | 0.10 | 0.063 | 0.24 | 4.780 |
| 4 | 221506TXJ###014 | 12.84 | 0.16 | 0.107 | 0.50 | 2.617 |
| 5 | 221506TXJ###015 | 12.87 | 0.13 | 0.211 | 0.73 | 1.378 |
The system of table 5 dries silk hot blast temperature procedure quality index using preceding thin plate
| Sequence number | Batch number | Average | Offset | Standard deviation | Extreme difference | CPK |
| 1 | 221503TXJ###020 | 110.34 | 0.34 | 0.649 | 2.33 | 1.366 |
| 2 | 221503TXJ###021 | 109.71 | 0.29 | 0.402 | 1.68 | 2.248 |
| 3 | 221503TXJ###022 | 110.28 | 0.28 | 0.687 | 2.80 | 1.320 |
| 4 | 221503TXJ###023 | 110.44 | 0.44 | 0.658 | 2.58 | 1.298 |
| 5 | 221503TXJ###024 | 110.42 | 0.42 | 0.686 | 2.81 | 1.254 |
The system of table 6. dries silk hot blast temperature procedure quality index using rear thin plate
| Sequence number | Batch number | Average | Offset | Standard deviation | Extreme difference | CPK |
| 1 | 221506TXJ###011 | 110.43 | 0.43 | 0.526 | 1.86 | 1.627 |
| 2 | 221506TXJ###012 | 110.11 | 0.11 | 0.397 | 1.84 | 2.425 |
| 3 | 221506TXJ###013 | 110.55 | 0.55 | 0.218 | 0.88 | 3.737 |
| 4 | 221506TXJ###014 | 110.06 | 0.06 | 0.233 | 0.96 | 4.210 |
| 5 | 221506TXJ###015 | 109.86 | 0.14 | 0.114 | 0.63 | 8.406 |
Figure before and after be precisely controlled and from the point of view of the comparative result of Measure of Process Capability, by the application of the present invention, just
Step achieves following effect：Outlet moisture content process variations reduce 20-30%, and CPK has a distinct increment, and about 30%；Hot blast temperature
Degree process variations reduce 30%, CPK liftings about 20-30%；Process diagnosis and control automatically are realized, is reduced artificial dry
In advance, it is ensured that product homogenizes；Reduce the working strength of operating personnel.Therefore the present invention can greatly improve thin plate drying process
Mass property index, enhancing production process overcomes and eliminates the ability of abnormal interference, fully ensured that hot blast in thin plate baking silk
The stability of temperature and moisture content of outlet, has good popularizing application prospect in cigarette industry.
Claims (6)
1. a kind of tobacco quality control method that silk is dried based on thin plate, it is characterised in that the control method comprises the following steps：
1) factor that moisture content of outlet and hot blast temperature dry yarn quality as influence thin plate is chosen, and to moisture content of outlet and hot blast temperature
Counted；
2) cylinder temperature setting value is adjusted according to the departure degree subregion of moisture content of outlet actual value and desired value, to realize to thin
The control of plate drying process middle outlet moisture；
3) hot blast throttle opening is adjusted according to the departure degree subregion of hot blast temperature actual value and desired value, with realization pair
The control of hot blast temperature in thin plate drying process；
The step 2) adjustment process it is as follows：
A. the region of variation of moisture content of outlet actual value and the difference of desired value is divided into N number of interval；
B. current moisture content of outlet is gathered, the difference to the current moisture content of outlet gathered and desired value carries out interval judgement, and
According to interval change adjusting cylinder temperature setting value；
The step 3) adjustment process it is as follows：
A. the region of variation of hot blast temperature actual value and the difference of desired value is divided into M interval；
B. current hot blast temperature is gathered, the difference to the current hot blast temperature gathered and desired value carries out interval judgement, so
The area residing for interval and the current time hot blast temperature residing for a upper moment for hot blast temperature was judged afterwards, and according to interval
Change adjustment hot blast throttle opening.
2. the tobacco quality control method according to claim 1 that silk is dried based on thin plate, it is characterised in that moisture content of outlet is real
The difference E (k) of actual value and desired value region of variation is divided into A, B ,-B, C ,-C, D ,-D, E and nine intervals of-E, and moisture content of outlet is real
The difference of actual value and desired value ± 0.15 it is interval for A areas, the warm setting value of cylinder keeps constant when interval herein；In 0.15-0.2
It is interval for B areas, 0.2-0.3 it is interval be C areas, 0.3 to 0.4 it is interval be D areas, be E areas more than 0.4, -0.15
What it is to -0.2 interval is-B areas, and what it is in -0.2 to -0.3 interval is-C areas, is-D areas in -0.3 to -0.4 interval, less than -0.4
Be-E areas.
3. the tobacco quality control method according to claim 1 that silk is dried based on thin plate, it is characterised in that by hot blast temperature
Actual value and the region of variation of desired value be divided into A, B ,-B, C ,-C, D and seven intervals of-D, hot blast temperature actual value and mesh
The difference of scale value is A areas ± 0.8 interval, and what it is in 0.8-1.2 intervals is B areas, and what it is in 1.2-1.8 intervals is C areas, more than 1.8
For D areas, -0.8 to -1.2 it is interval be-B areas, -1.2 to -1.8 it is interval be-C areas, less than -1.8 for-D areas.
4. the tobacco quality control method according to claim 1 that silk is dried based on thin plate, it is characterised in that cylinder temperature setting value
Basic value F need the water L removed to determine in thin plate drying process.
5. the tobacco quality control method according to claim 3 that silk is dried based on thin plate, it is characterised in that hot blast temperature is real
The interval decision rule of the difference of actual value and desired value is as follows：
If there is two points to fall in A areas in continuous 3 points, judgement is now in A areas；If having fall in B areas and B at 2 points in continuous 3 points
More than area, then judge to be now in B areas；If having fall more than C areas and C areas in continuous 3 points at 2 points, judgement is now in C areas；
If there is two points to fall in D areas in continuous 3 points, judgement is now in D areas；If there is two points to fall in-B areas and-B in continuous 3 points
Below area, then judge to be now in-B areas；If there are two points to fall below-C areas and-C areas in continuous 3 points, judge now to locate
In-C areas；If there is two points to fall in-D areas in continuous 3 points, judgement is now in-D areas.
6. a kind of tobacco quality control system that silk is dried based on thin plate, it is characterised in that the control system includes central control system, number
According to collecting unit and integrated data base, the data acquisition unit is used to gather the factor that influence thin plate dries yarn quality, the collection
It is used to choose the factor that moisture content of outlet and hot blast temperature dry yarn quality as influence thin plate into database, and to moisture content of outlet and heat
The qualitative data of air temperature is counted, and the central control system is used for the departure degree according to moisture content of outlet actual value and desired value
Subregion is adjusted to cylinder temperature setting value, to realize the control to thin plate drying process middle outlet moisture, for according to hot blast temperature
The departure degree subregion of degree actual value and desired value is adjusted to hot blast throttle opening, to realize to hot in thin plate drying process
The control of air temperature；
The adjustment process of the warm setting value of cylinder is as follows：
A. the region of variation of moisture content of outlet actual value and the difference of desired value is divided into N number of interval；
B. current moisture content of outlet is gathered, the difference to the current moisture content of outlet gathered and desired value carries out interval judgement, and
According to interval change adjusting cylinder temperature setting value；
The adjustment process of hot blast throttle opening is as follows：
A. the region of variation of hot blast temperature actual value and the difference of desired value is divided into M interval；
B. current hot blast temperature is gathered, the difference to the current hot blast temperature gathered and desired value carries out interval judgement, so
The area residing for the interval and current hot blast temperature residing for a upper moment for hot blast temperature was judged afterwards, and according to interval change
Adjust hot blast throttle opening.
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| CN107505908A (en) * | 2017-09-29 | 2017-12-22 | 四川烟叶复烤有限责任公司宜宾复烤厂 | A kind of beating and double roasting parameter automatic control system and method |
| CN109984375B (en) * | 2017-12-29 | 2022-07-26 | 贵州中烟工业有限责任公司 | Method for controlling cigarette hardness |
| CN108175121B (en) * | 2018-01-11 | 2020-12-29 | 上海烟草集团有限责任公司 | Method/system for self-correction of parameters, computer readable storage medium and apparatus |
| CN110874065A (en) * | 2018-09-04 | 2020-03-10 | 秦皇岛烟草机械有限责任公司 | Cut tobacco dryer outlet moisture control method |
| CN110955196A (en) * | 2018-09-27 | 2020-04-03 | 北京国双科技有限公司 | Processing method and system for production process index data |
| CN110133182B (en) * | 2019-04-01 | 2021-10-22 | 河南中烟工业有限责任公司 | Method for evaluating usability of cigarette tobacco shreds by adopting filling coefficient |
| CN111938186B (en) * | 2019-05-16 | 2022-04-12 | 湖南中烟工业有限责任公司 | Method for setting working opening of hot air quantity air door of roller tube sheet type cut-tobacco dryer |
| CN111165866A (en) * | 2019-12-12 | 2020-05-19 | 河南中烟工业有限责任公司 | Quality control method and system based on airflow type cut stem drying |
| CN110946306B (en) * | 2019-12-12 | 2022-09-23 | 河南中烟工业有限责任公司 | Quality control method and system based on drum-type cut tobacco moisture regain |
| CN111109643B (en) * | 2019-12-12 | 2021-10-22 | 河南中烟工业有限责任公司 | Method and system for controlling water content of cut tobacco of sheet cut tobacco drying |
| CN113017132A (en) * | 2021-04-09 | 2021-06-25 | 红云红河烟草(集团)有限责任公司 | Cut tobacco quality optimization method based on cut tobacco dryer process parameter prediction |
| CN115978977A (en) * | 2023-02-10 | 2023-04-18 | 上海益实智能科技有限公司 | Method and device for controlling moisture content of outlet of thin plate cut tobacco dryer in stages |
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| CN103704875B (en) * | 2012-10-09 | 2016-01-20 | 北京精密机电控制设备研究所 | A kind of high accuracy tobacco-shred water control method and control system thereof |
| CN203337288U (en) * | 2013-06-24 | 2013-12-11 | 河南中烟工业有限责任公司 | Temperature detection device for thin-plate type cut-tobacco drier |
| CN104489889B (en) * | 2014-11-17 | 2016-01-27 | 山东中烟工业有限责任公司 | A kind of cut-tobacco drier barrel temperature on-line detection device and method |
| CN104886751A (en) * | 2015-05-06 | 2015-09-09 | 红云红河烟草(集团)有限责任公司 | Cut tobacco shred cylinder wall temperature prediction model based on cut tobacco shred water content |
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Effective date of registration: 20230217 Address after: No.16 Yulin South Road, Zhengdong New District, Zhengzhou City, Henan Province Patentee after: CHINA TOBACCO HENAN INDUSTRIAL Co.,Ltd. Address before: 450002 No.29 nongnong Dong Road, Zhengzhou City, Henan Province Patentee before: CHINA TOBACCO HENAN INDUSTRIAL Co.,Ltd. Patentee before: NANYANG CIGARETTE FACTORY, HENAN CHINA TOBACCO INDUSTRY CO.,LTD. Patentee before: HENAN CENTER LINE ELECTRONIC TECHNOLOGY Co.,Ltd. |
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