CN104792643B - Charging/perfuming liquid hold-up uniformity on-line measurement instrument and its on-line control system - Google Patents
Charging/perfuming liquid hold-up uniformity on-line measurement instrument and its on-line control system Download PDFInfo
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Abstract
The invention discloses a kind of " charging/perfuming liquid hold-up uniformity on-line measurement instrument and its on-line control system ".After it is applied to tobacco factory's smoked sheet charging, the charging of tobacco perfuming production technology, perfuming, the on-line measurement of smoked sheet or tobacco material liquid hold-up uniformity and On-line Control.A kind of " charging/perfuming liquid hold-up uniformity on-line measurement instrument " includes：Infrared sensor, drimeter, radiation weighing sensor and data acquisition controller, and out-feed liquid content and uniformity are calculated by mathematical modeling according to the signal of collection.A kind of " charging/perfuming liquid hold-up on-line control system " is made up of charging/flavoring system equipment and feed liquid content uniformity on-line measurement instrument, and feed liquid content uniformity on-line measurement instrument measures out-feed liquid content X in real timeiValue, according to feed liquid content XiWith the difference DELTA X of a sets target content value m (m feed molar ratios)i=m Xi, pump discharge P is measured to feed liquidExpect iFlow rate set value control is carried out to reduce Δ Xi, improve feeding homogeneity.
Description
Technical field
The present invention relates to infrared technique in tobacco processing course to the composition of tobacco leaf or the on-line checking of its content of material,
The on-line measurement and control of feed liquid content and its uniformity more particularly in smoked sheet charging, tobacco perfuming production technology.
Background technology
Smoked sheet charging, tobacco perfuming (hereinafter referred to as charging/perfuming) are the important process of tobacco processing, by several need
Feed/material (solute) of perfuming is dissolves uniformly in solvent by a certain percentage, its solute+solvent is referred to as feed liquid.Cigarette
How much referred to as piece or pipe tobacco contain the feed liquid content of feed liquid material.
There is many kinds of substance in feed liquid, a kind of material is generally selected as label material, with measurement markers thing content of material
Method represents the content of feed liquid, such as with label material 1,2 propane diols weight W in Dosing SolutionExpect iFeed liquid weight is represented, with
Down with gage mark thing substance weight WExpect iFeed liquid content is represented with smoked sheet weight ratio to be stated.
The purpose of charging/perfuming is to strengthen the fragrance of cigarette, reduces excitant, improves the physical property of smoked sheet or pipe tobacco,
Strengthen humectation and the wettability power of smoked sheet or pipe tobacco, improve the toughness of smoked sheet or pipe tobacco, and changed by adding appropriate combustion adjuvant
Kind combustibility.Charging/perfuming liquid hold-up uniformity directly affects the quality of cigarette and the quality long-time stability of brand cigarette.
Tobacco business standard YC/T 353-2010 " measure of cigarette charging uniformity " define to be exported in charging process
Place, decimation in time is no less than 30 samples at equal intervals, and 1,2- propane diols in measure sample is provided according to professional standard YC/T 243
Content Xi, and feeding homogeneity is characterized with CU：
Here, CU- feeding homogeneities
N- Specimen Numbers, n >=30
Xi- i-th sample 1,2-PD content
The average value of the 1,2-PD content of-n samples
Tobacco business standard YC/T 243-2008 " the measure gas chromatography of tobacco and tobacco product 1,2-PD " are advised
Determine using gas chromatograph measurement 1,2-PD, the specific measuring method and step of glycerine.At present, most tobacco factories are universal
Feed liquid content uniformity measurement and evaluation are carried out using this method.Subject matter is existing for this method：
1st, off-line measurement can not detect in charging/perfuming production process in smoked sheet or pipe tobacco feed liquid content and uniformly in real time
Property, it is impossible to realization is automatically adjusted and controlled to feed liquid content uniformity；
2nd, gas chromatography measurement 1,2-PD overlong time, lags far behind production process, and charging technology cannot
Timely adjust, uniformity cannot improve.
In recent years, people explore infrared technique quick detection feed liquid content uniformity.Patent (application number
200810049575.7) " near-infrared tobacco feeding homogeneity test device " is popped one's head in using optical fiber diffusing reflection, measures tobacco sample
Middle glycerol content；" cigarette primary processing process feeding homogeneity detection project is set Shanghai Communications University's master thesis (grandson reaches)
Meter ", by the tobacco leaf to certain mass, the sample of different feed liquid content is made in the feed liquid for putting on different quality, using Germany
BRUKER companies VECTOR22 types near infrared spectrometer detects to alkyl content in sample feed liquid；" 1,2- in cigarette charging
The rapid test method of propane diols " (China Tobacco Anhui Industrial Co., Ltd. Xue instructs bright etc.), using German BRYKER companies
IFS28/N types near infrared spectrometer detects to 1,2-PD in smoked sheet sample；" charging of near-infrared spectral measurement smoked sheet is equal
Even property " (Chinese Zhenzhou Cigarette Factory's Quality Supervision Station Wang Jun etc.) uses German company BRUKER company MATRIX-1 type near infrared lights
Spectrometer (built-in gold-plated diffusing reflection integrating sphere) to feeding homogeneity detect, etc..
In the use near infrared technology that existing tobacco business is delivered, in the article of quick detection feed liquid content and uniformity,
The overwhelming majority is off-line measurement, and measurement process is all first to weigh the smoked sheet or pipe tobacco of constant weight, and sample is made, then using near
Infrared technique measures feed liquid substance weight in smoked sheet or pipe tobacco, and feed liquid content in smoked sheet or pipe tobacco is calculated with this.In existing text
While not seen in chapter using near infrared technology measurement feed liquid substance weight, smoked sheet in infrared sensor measurement zone is also detected
Or the technical characteristic of the on-line measurement feed liquid content such as weight of pipe tobacco.
The content of the invention
A kind of charging/perfuming liquid hold-up uniformity on-line measurement instrument and its on-line control system, it is applied to tobacco factory
Smoked sheet feeds or the charging of tobacco perfuming production technology, perfuming after smoked sheet or tobacco material liquid hold-up on-line measurement with line traffic control
System, to improve feed liquid content uniformity, improve cigarette quality.It solve technical problem be：
1st, the weight of near infrared technology on-line checking charging/perfuming feed liquid markers matter is utilized.
Near infrared technology shows that specific material molecule absorbs the infrared light of specific frequency, utilizes the infrared of specific frequency
Light and specific matter interaction and caused physical effect such as absorb, reflected, scattering, interfering, diffraction, and infrared biography is made
Sensor, realize and material composition is measured.
2nd, using radiant type weighing sensor, the weight of smoked sheet or pipe tobacco in infrared sensor measured zone is measured；
3、The mathematical modeling of measurement feed liquid content is established, is contained so as to solve feed liquid
Measure on-line measurement.
4th, the characteristics of further have studied feed liquid content On-line Control, it is proposed that control method or step, realize feed liquid
Content On-line Control.
A kind of charging/perfuming liquid hold-up uniformity on-line detector, it is characterised in that：
Infrared sensor, including infrared generator and infrared receiver, for measuring feed liquid label material
Weight WExpect i；
Radiant type weighing sensor, including radiation source and radiation detector, for measuring infrared sensor measurement zone
Interior smoked sheet or pipe tobacco weight WCigarette i；
Drimeter, for measuring the moisture M of smoked sheet or pipe tobacco in infrared sensor measurement zonei；
Data acquisition controller, for receiving WExpect i、WCigarette iAnd MiSignal simultaneously calculates feed liquid content X by mathematical modelingiWith it is uniform
Property CUi；
The charging/perfuming liquid hold-up uniformity on-line measurement instrument, it is characterised in that：Infrared sensor is that transmission-type is red
During outer sensor, its mathematical modeling is：
In formula,
Xi--- feed liquid content；
K --- calibration coefficient；
WExpect i--- feed liquid label substance weight in infrared sensor measurement zone；
WCigarette i--- the smoked sheet or pipe tobacco weight of radiation weighing sensor measurement；
Mi--- the smoked sheet or moisture in cut tobacco of drimeter measurement.
Feed liquid content uniformity CUi：
In formula：
CUi--- feed liquid content uniformity；
N --- collection XiNumber, N >=15；
Xi--- the content of ith feed liquid；
--- n times XiAverage value；
The perfuming/charging feed liquid content uniformity on-line measurement instrument, it is characterised in that：Also include a smoked sheet or pipe tobacco
Thickness measurement equipment or thickness transducer, for detecting the thickness H of smoked sheet or pipe tobacco in real timei；
The charging/perfuming liquid hold-up uniformity on-line measurement instrument, it is characterised in that：Infrared sensor is reflective red
Outer sensor, during for detecting feed liquid label substance weight, its feed liquid content mathematical modeling is：
In formula：
hi--- reflection infrared sensor measurement zone smoked sheet or pipe tobacco reflector thickness；
Hi--- the smoked sheet or pipe tobacco thickness of thickness measurement equipment measurement.
The charging/perfuming liquid hold-up uniformity on-line measurement instrument, it is characterised in that：
Demarcation COEFFICIENT K in formula (1) and (3), it is utilized in the outlet of feed liquid content uniformity on-line measurement instrument measurement process
Place extracts smoked sheet or pipe tobacco sample, is measured mark substance gravimetric value by national standard or rower regulation and K is demarcated as standard value
And determine.
The charging/perfuming liquid hold-up uniformity on-line measurement instrument, it is characterised in that：
Radiant type weighing sensor is gamma-ray transducer or X ray sensor or microwave weighing sensor；Moisture measurement
Instrument is infrared moisture measuring instrument or microwave measurement for moisture content instrument；Smoked sheet or pipe tobacco thickness transducer or thickness measurement equipment are mechanical compaction rolls
Formula angular displacement thickness transducer or laser thickness gauge or sonigauge；Data acquisition controller can use PLC or industrial computer.
The invention also discloses a kind of charging/perfuming liquid hold-up on-line control system, it is characterised in that including：
Charging/flavoring system equipment：
Smoked sheet or pipe tobacco charging belt conveyer (12), for conveying smoked sheet or pipe tobacco, regulation conveying tape speed change into
Doses；Drimeter (13), for measuring the moisture M of charging smoked sheet or pipe tobaccoi；Belted electronic balance (14), for weigh into
Expect smoked sheet or pipe tobacco weight WCigarette iWith flow PCigarette i；Control computer (15), for data acquisition, calculating and control；Charging/perfuming
Machine (16), for smoked sheet or pipe tobacco charging or perfuming；
Wherein roller (16-1), for smoked sheet or the pipe tobacco of rolling, is uniformly fed；
Feed liquid hold-up tank (16-2), for storing feed liquid；
Dehvery pump (16-3), for conveying feed liquid；
Measuring pump (16-4), for adjusting and measuring feed liquid weight WTotal material iWith flow PMaterial；
Nozzle (16-5), for spraying feed liquid；
Discharge belt conveyer (19), for conveying smoked sheet or pipe tobacco after charging/perfuming.
Charging/perfuming liquid hold-up in-situ measurement equipment：
Charging/perfuming liquid hold-up uniformity on-line measurement instrument (17), for on-line measurement feed liquid content XiWith uniformity
CUi；
Wherein infrared sensor (17-1), for measuring feed liquid label substance weight WExpect i；
Drimeter (17-2), for measuring smoked sheet or moisture in cut tobacco M in infrared sensor measurement zonei；
Radiant type weighing sensor (17-3), for measuring smoked sheet or pipe tobacco weight W in infrared sensor measurement zoneCigarette i；
Data acquisition controller (17-4), for data acquisition, calculating, control.
Charging/flavoring system control computer (15) and data acquisition controller (17-4) phase of on-line measurement instrument (17)
Even, transmit and control for data, Fig. 7 gives out-feed liquid content on-line control system equipment schematic diagram.
The charging/perfuming liquid hold-up on-line control system, it is characterised in that：Control computer (15) is with feed liquid content
XiFor controlled quentity controlled variable, with measuring pump feed liquid flow PExpect iOr the feed rate P of smoked sheetCigarette iFor regulated quantity, to from data acquisition controller
The X of (17-4)iValue carries out On-line Control：
The charging/perfuming liquid hold-up on-line control system, is further characterized in that：Control computer (15) is according to reception
The X of data acquisition controller (17-4)iValue and sets target feed liquid content value, calculate the two difference DELTA Xi, according to Δ XiTo meter
Amount pump (16-4) or feeding conveyor (12) send a control signal, and the control signal is used for the flow for adjusting measuring pump (16-4)
PExpect iOr the belt speed of regulation feeding conveyor (12) increaseds or decreases smoked sheet flow PCigarette i, to reduce Δ XiValue, circulates, causes according to this
XiValue is close with sets target feed liquid content value.Its program control block diagram is shown in Fig. 8.
The sets target feed liquid content value is predetermined feed molar ratio m,, or n times XiBe averaged
Value
The charging/perfuming liquid hold-up on-line control system, is further characterized in that：The inlet amount P of smoked sheet or pipe tobaccoCigarette i
It is with metered flow PCigarette volumeFor sets target flow value, to its flow PCigarette iCarry out setting control：
Control computer (15) is according to the P of the belted electronic balance (14) of receptionCigarette iAnd the M of drimeter (13)iSignal meter
Calculate PCigarette i(1-Mi) and the value and one target flow value P of settingCigarette volumeDifference DELTA PCigarette i, Δ PCigarette i=PCigarette i(1-Mi)-PCigarette volume, according to Δ
PCigarette iOne control signal is sent to feeding conveyor (12), the control signal is used to adjust belt feeder belt speed, increaseds or decreases smoked sheet
Or flow of tobacco PCigarette i, to reduce Δ PCigarette i, circulate according to this, cause PCigarette i(1-Mi) and PCigarette volumeIt is close, its program control block diagram is shown in Fig. 9.
The charging/perfuming liquid hold-up on-line control system, is further characterized in that：With PCigarette i(1-Mi)≥QPCigarette volumeFor boundary
Limit, the automatic switchover to measuring pump Flow-rate adjustment being realized, wherein Q is setting constant, recommends Q=90%, can also set certainly=
80%, 70% ... ... etc., it is described below with Q=90%：
Control computer (15) is according to belted electronic balance (14) P of receptionCigarette i, drimeter (13) MiAnd data acquisition control
The X of device (17-4) processediSignal, calculate PCigarette i(1-Mi) value, with the value and 90%PCigarette volumeIt is compared judgement, PCigarette i(1-Mi)≥
90%PCigarette volume。
Such as less than, control computer (15) is according to m values set in advance, wherein m- feed molar ratios,Calculate
Go out PExpect i=PCigarette i(1-Mi) × m, according to PExpect iControl signal is sent to measuring pump (16-4), the control signal is used to adjust measuring pump
(16-4) flow, makes it equal to PExpect i；
Such as larger than it is equal to, the X that control computer (15) measures according to feed liquid content on-line measurement instrument (17)iValue and setting mesh
Mark feed liquid content value (m) calculates the two difference DELTA Xi, control computer is according to Δ XiPID arithmetic or fuzzy control are carried out, is drawn
Control amount is returned, control signal is sent to measuring pump (16-4) further according to control amount is returned, the control signal is used to adjust measuring pump (16-4)
Flow, to reduce Δ XiValue, its program control block diagram are shown in Figure 10.
Brief description of the drawings
Fig. 1 transmission-type infrared sensor measurement zone schematic diagrames；
Fig. 1 (a) front views；
Fig. 1 (b) top views；
1 --- the infrared emittance of transmission-type infrared sensor；
2 --- the infrared remote receiver of transmission-type infrared sensor；
3 --- smoked sheet or pipe tobacco；
4 --- conveyer belt；
C1×D1It is that sensor detects smoked sheet or pipe tobacco area on belt；
HiSmoked sheet or pipe tobacco thickness in-transmission-type infrared sensor measurement zone.
Fig. 2 reflection infrared sensor measurement zone schematic diagrames；
Fig. 2 (a) front views；
Fig. 2 (b) top views；
hiWith smoked sheet or pipe tobacco dependent interaction area occurs for the infrared ray of the infrared emittance transmitting of-reflection infrared sensor
The thickness in domain, i.e. reflector thickness；
C2×D2It is that sensor detects smoked sheet or pipe tobacco area on belt.
Fig. 3 uses charging/perfuming liquid hold-up uniformity on-line measurement instrument schematic diagram of transmission-type infrared sensor；
1 --- the infrared emittance of transmission-type infrared sensor；
2 --- the infrared remote receiver of transmission-type infrared sensor；
3 --- smoked sheet or pipe tobacco；
4 --- conveyer belt；
5 --- drimeter；
6 --- the radiation source of radiant type weighing sensor；
7 --- the radiation detector of radiant type weighing sensor；
8 --- data acquisition controller.
Fig. 4 infrared sensors, radiate weighing sensor, drimeter detection area schematic diagram on the conveyor belt；
C --- detection area length；
D --- detection area width.
Fig. 5 without moisture amendment feed liquid content on-line measurement instrument schematic diagram.
Fig. 6 uses charging/perfuming liquid hold-up uniformity on-line measurement instrument schematic diagram of reflection infrared sensor；
9 --- smoked sheet or pipe tobacco thickness transducer or thickness measurement equipment.
Fig. 7 chargings/perfuming liquid hold-up on-line control system equipment forms schematic diagram；
11 --- charging smoked sheet or pipe tobacco；
12 --- charging belt conveyer；
13 --- drimeter；
14 --- belted electronic balance；
15 --- control computer；
16 --- charging/Perfuming machine；
16-1 rollers；
16-2 feed liquid hold-up tanks；
16-3 dehvery pumps；
16-4 measuring pumps；
16-5 nozzles；
17 --- charging/perfuming liquid hold-up uniformity on-line measurement instrument；
17-1 infrared sensors；
17-2 drimeters；
17-3 radiant type weighing sensors；
17-4 data acquisition controllers；
18 --- smoked sheet or pipe tobacco after charging/perfuming；
19 --- outfeed belt conveyor.
Fig. 8 is to measure pump discharge PExpect iIt is regulated quantity to feed liquid content XiThe program control block diagram of control；
PExpect i- metering pump discharge；
Xi- smoked sheet/tobacco material liquid hold-up；
ΔXiThe difference of-sets target feed liquid content and the feed liquid content of measurement；
Fig. 9 is with smoked sheet/pipe tobacco metered flow PCigarette volumeIt is sets target flow to smoked sheet/flow of tobacco PCigarette iCarry out setting control
Program control block diagram；
PCigarette i- smoked sheet/pipe tobacco feed rate；
PCigarette volume- smoked sheet/pipe tobacco metered flow；
Mi- smoked sheet/pipe tobacco water content；
Figure 10 chargings/perfuming liquid hold-up XiProgram control block diagram；
The program control block diagram of Figure 11 control methods.
Embodiment
Technical solution of the present invention is described further below in conjunction with the accompanying drawings.
Fig. 1 and Fig. 2 gives the schematic diagram of transmission-type infrared sensor and reflection infrared sensor measurement zone, Fig. 1
(a), Fig. 2 (a) is front view, and Fig. 1 (b), Fig. 2 (b) are top views, and infrared sensor is to utilize infrared ray and matter interaction
The physical effects such as caused absorption, reflection, scattering, interference, diffraction develop.The infrared emittance of sensor is launched infrared
After line interacts with smoked sheet or pipe tobacco, infrared ray is projected again in active region, which part is connect by the infrared of sensor
Receive device to receive, the part infrared ray that receiver receives region shared in interaction area is infrared sensor measurement zone, i.e.,
Volume is measured, from Fig. 1, Fig. 2, smoked sheet or pipe tobacco thickness are different, H in the two measurement zonei＞ ＞ hi, wherein Hi- transmission-type
In sensor measurement zone, the thickness of smoked sheet or pipe tobacco；hiSmoked sheet or the thickness of pipe tobacco reflection in-reflection sensor measurement zone.
In measurement zone width D the same terms of sensor detection, on-line measurement, transmission-type infrared sensor measurement belt feeder conveying cigarette
The volume of piece or pipe tobacco is VTransmission=DvtHi, wherein v- belt speeds, t- run times；Reflection sensor measures smoked sheet or cigarette
The volume of silk is VReflection=Dvthi, VReflection＜ ＜ VTransmission, reflection sensor measurement smoked sheet or pipe tobacco amount are small, representative poor.In addition,
Also influenceed when reflection sensor measures by the accumulation shape of smoked sheet in measurement zone or pipe tobacco, bulk density, moisture change etc.,
Measurement error is big.
Either transmission-type or reflective, that they measure is all the weight W of label materialExpect i, WExpect iSize and measurement
The feed liquid content X of smoked sheet or pipe tobaccoiAnd measurement zone smoked sheet or pipe tobacco weight WCigarette iIt is relevant.And WExpect iAll it is again infrared ray and material
Light transmittance T (T=I after interaction0/Ii) function, i.e. WExpect i=f (I0/Ii), I0- without material Light intensity, Ii- have material after
Luminous intensity.Using infrared sensor made of different physical effects, its difference is only WExpect iWith (I0/Ii) between functional relation it is different,
Such as had according to material to transmission-type infrared sensor made of infrared ray absorbing principle according to Beer-Camber laws：
Ii=I0exp(kbc)
In formula, I0Luminous intensity before-absorption；
IiLuminous intensity after-absorption；
K- absorption coefficients；
C- extinction material concentration；
B- absorber thicknesses.
Accordingly, can export, the weight of absorbing materialUsing the smoked sheet of certain mass, apply different
The feed liquid of quality, the different sample of feed liquid content is made, the infrared sensor, which is demarcated, to be drawnClose
It is curve, then using curve-fitting method such as linear fit, it can be deduced that infrared sensor measures mathematical modeling,
Wherein, d- fitting a straight lines slope；
E- fitting a straight line intercepts.
According to this, solve measurement of the infrared sensor to feed liquid label substance weight.
Fig. 3 is charging/perfuming liquid hold-up uniformity on-line measurement instrument schematic diagram using transmission-type infrared sensor, instrument
Device is arranged on above and below the conveyer belt 4 of conveying smoked sheet or pipe tobacco, and it includes infrared sensor, drimeter 5, radiation title
Retransmit sensor and data acquisition controller 8；Wherein infrared sensor includes infrared emittance 1 and receiver 2, radiates weighing and sensing
Device includes radiation source 6 and radiation detector 7.Equipment installation will ensure infrared sensor, moisture transducer and radiation weighing and sensing
The detection area center line of device three is on same center line, as shown in Figure 4.The width of the detection area of three sensors
D1、D2、D3, to be mutually matched or equal, it is therefore an objective to which that ensure the measurement of three sensors is all same volume VTransmission=DvtHiIt is interior,
Feed liquid label substance weight, moisture and the weight of smoked sheet or pipe tobacco of smoked sheet or pipe tobacco, defined according to feed liquid contentThe mathematical modeling for calculating feed liquid content can be derived.
In figure 3, such as in selected feed liquid label material is 1,2-PD, according to the infrared light of 1,2-PD
Spectrum, the transmission-type infrared sensor of measurement 1,2-PD is can be made into, including infrared emittance 1 and receiver 2, to survey
Measure 1,2-PD weight WExpect i；Infrared moisture measuring instrument can be selected in drimeter 5, for measuring smoked sheet or moisture in cut tobacco Mi；
Radiate weighing sensor and X ray weighing sensor can be selected, including x-ray source 6 and X-ray detector 7, for measuring cigarette
Piece or pipe tobacco weight WCigarette i；Industrial computer can be selected in data acquisition controller 8, for data acquisition, calculating, control.On infrared water
Divide measurement, it is all that existing mature technology will not be described in detail herein that X ray, which is weighed,.
Fig. 5 gives the charging or perfuming liquid hold-up on-line measurement instrument schematic diagram without moisture amendment, charging or
In perfuming production technology, if smoked sheet or pipe tobacco contain moisture M after charging or perfumingiVary less, i.e., (1-Mi) is approximately normal
Number, can be without moisture amendment, its mathematical modeling：
(constant)
Fig. 5 is the special case of the present invention.
Fig. 6 is the feed liquid content on-line measurement instrument schematic diagram of reflection infrared sensor, and it is unlike Fig. 3, reflection
Formula infrared sensor measurement zone volume is VReflection=Dvthi, that reflection infrared sensor is measured is measurement zone VReflectionInterior feed liquid mark
Remember thing substance weight WExpect iIf try to achieve feed liquid content, it is desirable to measure measurement zone VReflectionInterior smoked sheet or pipe tobacco weight WAnti- cigarette i, therefore,
A smoked sheet or pipe tobacco thickness measurement equipment are additionally arranged in Fig. 5 or thickness transducer 9 is used to measure smoked sheet or pipe tobacco thickness in measurement zone
Spend Hi, thus obtain measurement zone volume VTransmission=DvtHi, weighing sensor, including radiation source 6 and radiation detector 7 are radiated, is measured
Measurement zone VTransmissionInterior smoked sheet or pipe tobacco weight WCigarette i, measurement zone VTransmissionThe bulk density ρ of interior smoked sheet or pipe tobaccoi,Thus
Release reflection sensor measurement zone VReflectionInterior smoked sheet or the weight W of pipe tobaccoAnti- cigarette i,
In formula,
K- calibration coefficients；
WExpect i- reflection infrared sensor measures feed liquid label substance weight；
WAnti- cigarette i- measurement zone VReflectionInterior smoked sheet or pipe tobacco weight；
WCigarette i- measurement zone VTransmissionThe smoked sheet or pipe tobacco weight that interior radiant type weighing sensor is measured；
MiThe smoked sheet or moisture in cut tobacco of-drimeter measurement；
HiThe smoked sheet or pipe tobacco thickness of-thickness transducer measurement；
hi- reflection infrared sensor measurement zone smoked sheet or pipe tobacco reflector thickness, because infrared ray and interaction produce
Raw physical effect is different, hiBe worth it is different, but under the incident infrared luminous intensity permanence condition, hiApproximate constant.
Fig. 3, Fig. 5, Fig. 6 give this patent three kinds of embodiments, wherein using the material of transmission-type infrared sensor with Fig. 3
Liquid hold-up on-line measurement instrument measurement accuracy highest, it is representative good, it is to recommend preferred scheme.
Fig. 7 is a kind of charging disclosed by the invention/perfuming liquid hold-up on-line control system equipment schematic diagram.It is existing
Have in tobacco factory's charging/flavoring system Equipment Foundations, be further added by charging/perfuming liquid hold-up uniformity on-line measurement instrument (17) structure
Into.Charging/perfuming liquid hold-up uniformity on-line measurement instrument (17) is arranged on smoked sheet belt conveyer after existing charging/perfuming
(19) on, control computer (15) is main control, and data acquisition controller (17-4) is auxiliary machine, data acquisition controller (17-
4) infrared sensor (17-1), drimeter (17-2), radiation weighing sensor (17-3) signal are constantly gathered, according to feed liquid
The mathematical modeling of content calculates XiValue and CUiValue, and constantly it is sent to control computer (15).Control computer
(15) following control methods or step are pressed, completes charging/perfuming liquid hold-up On-line Control task.
The invention also discloses a kind of control method of feed liquid content on-line control system to be：
Step 1 preparatory stage, including start, computer reset, and start charging outfeed belt conveyor, charging/Perfuming machine, feed liquid
Content on-line measurement instrument and cutting agency start blanking；
The step 2 smoked sheet feed rate setting control stage enters using smoked sheet metered flow as sets target flow value to smoked sheet
Stream amount carries out flow rate set value control：
Control computer (15) is according to belted electronic balance (14) P of receptionCigarette iAnd drimeter (13) MiSignal of change goes out
PCigarette i(1-Mi) value, and the value and sets target flow value or metered flow value PCigarette volumeDifference DELTA PCigarette i, control computer further according to
ΔPCigarette iControl signal is sent to feeding conveyor (12), the control signal is used to adjust conveyer tape speed, increaseds or decreases smoked sheet
Flow PCigarette i, to reduce Δ PCigarette i；
Step 3 judges the stage, with PCigarette i(1-Mi)≥QPCigarette volumeFor boundary, wherein Q is setting constant, recommends Q=90%, realizes
To measuring pump discharge PExpect iThe automatic switchover of regulation：Control computer (15) is according to belted electronic balance (14) P of receptionCigarette iAnd moisture
Measuring instrument (13) MiSignal, calculate PCigarette i(1-Mi) and by the value and QPCigarette volumeValue is compared judgement, PCigarette i(1-Mi)≥QPCigarette volume；
Step 3.1 PCigarette i(1-Mi) it is less than QPCigarette volume, charging/Perfuming machine metering pump discharge PExpect iFed by the feed molar ratio m of setting,
WhereinCharging：
Control computer (15) calculates P according to feed molar ratio m set in advanceExpect i,
PExpect i=PCigarette i(1-Mi) × m, and according to PExpect iControl signal is sent to the measuring pump (16-4) of charging/Perfuming machine, should
The flow that control signal is used to adjust measuring pump (16-4) makes it equal to PExpect i, return to step 2 after the completion of charging；
Step 3.2PCigarette i(1-Mi) it is more than or equal to QPCigarette volume, charging/Perfuming machine metering pump discharge PExpect iBy Δ XiValue is fed：
The X that control computer (15) measures according to feed liquid content on-line measurement instrument (17)iValue contains with the target feed liquid set
Value m orCalculate the two difference DELTA Xi, control computer is according to Δ XiThe measuring pump (16-4) of charging/Perfuming machine is sent out
Go out control signal, the control signal is used for the flow P for adjusting measuring pump (16-4)Cigarette i, to reduce Δ XiValue, is returned after the completion of charging
Step 2；
The step 3.2 further comprises that control computer (15) is according to Δ XiValue carries out PID arithmetic (or fuzzy control),
Control amount is drawn back, control computer sends control signal according to control amount is returned to measuring pump (16-4), and the control signal is used to adjust
Pump discharge is measured, to reduce Δ XiValue, return to step 2 after the completion of charging；So as to realize feed liquid XiOn-line customization control.
Figure 11 gives the program control block diagram of the control method, sees accompanying drawing 11.
The control method advantage of on-line control system is, can reduce inlet amount fluctuation using feed rate setting control
Influence to feed liquid uniformity；Using PCigarette i(1-Mi) it is measured value and PCigarette volumeDifference DELTA PCigarette iTo feed liquid flow PExpect iIt is controlled,
Reduce moisture change influences on feed liquid uniformity；Using by feed molar ratio m orX is carried out for sets target feed liquid content valueiIt is fixed
Value control, can improve feed liquid content uniformity；In the case of keeping m values constant, it is constant to can reach long-time feed liquid content of material,
Brand tobacco quality long-time stability can be kept.
Above said content, those skilled in the art understand the present invention basic thought, general principle, technical scheme with
A variety of changes or deformation can be made under the characteristics of feature and embodiment to implementation and to apparatus modifications or replacement, but
All belong to the scope of this patent；Secondly " feed liquid content uniformity on-line measurement instrument " described in this patent can equally be well applied in tobacco leaf
The on-line checking of material component content on-line checking or other content compositions, all it is to detect on an equal basis, also belongs to the scope of this patent.
Claims (12)
- A kind of 1. charging/perfuming liquid hold-up on-line measurement instrument, it is characterised in that：Including：Infrared sensor, including infrared generator and infrared receiver, for measuring feed liquid label substance weight WExpect i；Radiant type weighing sensor, including radiation source and radiation detector, for measuring cigarette in infrared sensor measurement zone Piece or pipe tobacco weight WCigarette i；Drimeter, for measuring smoked sheet or moisture in cut tobacco M in infrared sensor measurement zonei；Data acquisition controller, for receiving WExpect i、WCigarette iAnd MiSignal simultaneously calculates feed liquid content X by mathematical modelingiAnd uniformity CUi。
- 2. charging according to claim 1/perfuming liquid hold-up on-line measurement instrument, it is characterised in that：Also include smoked sheet or Pipe tobacco thickness measure sensor or thickness measurement equipment, for measuring smoked sheet or pipe tobacco thickness Hi。
- 3. charging according to claim 1/perfuming liquid hold-up on-line measurement instrument, it is characterised in that：Infrared sensor is Transmission-type infrared sensor, mathematical modeling are：In formula,Xi--- feed liquid content；K --- calibration coefficient；WExpect i--- feed liquid label substance weight in infrared sensor measurement zone；WCigarette i--- the smoked sheet or pipe tobacco weight of radiation weighing sensor measurement；Mi--- the smoked sheet or moisture in cut tobacco of drimeter measurement；Feed liquid content uniformity (CUi)：In formula：CUi--- feed liquid content uniformity；N --- collection XiNumber, N >=15；Xi --- the content of ith feed liquid；--- n times XiAverage value.
- 4. charging according to claim 1/perfuming liquid hold-up on-line measurement instrument, it is characterised in that：Infrared sensor is Reflection infrared sensor, mathematical modeling are：In formula：Xi--- feed liquid content；K --- calibration coefficient；WExpect i--- feed liquid label substance weight in infrared sensor measurement zone；WCigarette i--- the smoked sheet or pipe tobacco weight of radiation weighing sensor measurement；Mi--- the smoked sheet or moisture in cut tobacco of drimeter measurement；hi--- reflection infrared sensor measurement zone smoked sheet or pipe tobacco reflector thickness；Hi--- the smoked sheet or pipe tobacco thickness of thickness measurement equipment measurement.
- 5. according to claim 3 or 4, described charging/perfuming liquid hold-up on-line measurement instrument, it is characterised in that：Mathematical modeling Middle demarcation coefficient k is utilized in line measuring instrument measurement process exit and extracts smoked sheet or pipe tobacco sample, is provided by national standard or rower Label material content value is measured to demarcate k as standard value and determine k values.
- 6. charging according to claim 1/perfuming liquid hold-up on-line measurement instrument, it is characterised in that：Drimeter is Infrared moisture measuring instrument or microwave measurement for moisture content instrument；Radiant type weighing sensor is gamma Rays weighing sensor or X ray Radiate weighing sensor or microwave radiation weighing sensor.
- 7. charging according to claim 2/perfuming liquid hold-up on-line measurement instrument, it is characterised in that：Smoked sheet or pipe tobacco are thick It is roller angular displacement sensor or laser thickness gauge or sonigauge to spend measurement sensor or thickness measurement equipment.
- A kind of 8. charging/perfuming liquid hold-up on-line control system, it is characterised in that：Including：Charging/flavoring system equipment：Smoked sheet or pipe tobacco charging belt conveyer (12), for conveying smoked sheet or pipe tobacco；Feed moisture measuring instrument (13), for measuring the moisture M of charging smoked sheet or pipe tobaccoi；Belted electronic balance (14), for weighing charging smoked sheet or pipe tobacco weight WCigarette i；Control computer (15), for data acquisition, calculating and control；Charging/Perfuming machine (16), for smoked sheet or pipe tobacco charging or perfuming；Wherein roller (16-1), for smoked sheet or the pipe tobacco of rolling, is uniformly fed；Feed liquid hold-up tank (16-2), for storing feed liquid；Dehvery pump (16-3), for conveying feed liquid；Measuring pump (16-4), for adjusting and measuring feed liquid weight WTotal material iWith flow PExpect i；Nozzle (16-5), for spraying feed liquid；Discharge belt conveyer (19), for conveying smoked sheet or pipe tobacco after charging/perfuming；Charging/perfuming liquid hold-up in-situ measurement equipment：Charging described in claim 1-6 any one/perfuming liquid hold-up on-line measurement instrument (17), for on-line measurement feed liquid Content XiWith uniformity CUi；Wherein infrared sensor (17-1), for measuring feed liquid label substance weight WExpect i；Drimeter (17-2), for measuring smoked sheet or moisture in cut tobacco M in infrared sensor measurement zonei；Radiant type weighing sensor (17-3), for measuring smoked sheet or pipe tobacco weight W in infrared sensor measurement zoneCigarette i；Data acquisition controller (17-4), for data acquisition, calculating, control；Charging/flavoring system control computer (15) and data acquisition controller (17-4) phase of on-line measurement instrument (17) Even, transmit and control for data；Control computer (15), with feed liquid content XiFor controlled quentity controlled variable, with measuring pump feed liquid flow PExpect iOr smoked sheet feed rate PCigarette i For regulated quantity, to the X from data acquisition controller (17-4)iValue carries out On-line Control.
- 9. on-line control system according to claim 8, is further characterized in that：Control computer (15) is according to reception number The X measured according to acquisition controller (17-4)iValue and sets target feed liquid content value, calculate the two difference DELTA Xi, according to Δ Xi One control signal is sent to measuring pump (16-4) or feeding conveyor (12), the control signal be used for adjust measuring pump ( Flow P 16-4)Expect iOr the belt speed of regulation feeding conveyor (12) increaseds or decreases smoked sheet flow PCigarette i, to reduce Δ XiValue, Circulate according to this, cause XiValue is close with sets target feed liquid content value.
- 10. control system according to claim 8, is further characterized in that：Smoked sheet or pipe tobacco feed rate PCigarette iIt is with smoked sheet Metered flow is sets target flow value to its feed rate PCigarette iCarry out setting control：The P that control computer (15) measures according to the belted electronic balance (14) of receptionCigarette iAnd drimeter (13) measurement MiSignal of change goes out PCigarette i(1-Mi) and the value and sets target flow value PCigarette volumeDifference DELTA PCigarette i, Δ PCigarette i=PCigarette i(1-Mi)- PCigarette volume, according to Δ PCigarette iOne control signal is sent to feeding conveyor (12), the control signal is used to adjust belt feeder belt speed, increases Add deduct small smoked sheet or flow of tobacco PCigarette i, to reduce Δ PCigarette i, circulate according to this, cause PCigarette i(1-Mi) and PCigarette volumeIt is close.
- 11. control system according to claim 8, is further characterized in that：Control computer is with PCigarette i(1-Mi)≥QPCigarette volumeFor Boundary, wherein Q are setting constant, are realized to measuring pump discharge PExpect iThe automatic switchover of regulation：Control computer (15) is according to the P of the belted electronic balance (14) of receptionCigarette i, drimeter (13) MiAnd data The X of acquisition controller (17-4)iSignal, calculate PCigarette i(1-Mi) value, with the value and QPCigarette volumeValue, which is compared, judges PCigarette i(1- Mi)≥QPCigarette volume, such as less than, control computer (15) according to m values set in advance, wherein m- feed molar ratios, Calculate PExpect i=PCigarette i(1-Mi) × m, according to PExpect iControl signal is sent to measuring pump (16-4), the control signal is used to adjust Measuring pump (16-4) flow, makes it equal to PExpect i；Such as larger than it is equal to, the X that control computer (15) measures according to feed liquid content on-line measurement instrument (17)iValue and setting mesh Mark feed liquid content value PCigarette volumeCalculate the two difference DELTA Xi, control computer is according to Δ XiPID arithmetic is carried out, draws back control amount, root Control signal is sent to measuring pump (16-4) according to control amount is returned, the control signal is used for the flow for adjusting measuring pump (16-4), To reduce Δ XiValue.
- 12. a kind of control method of charging/perfuming liquid hold-up on-line control system is：Step 1 preparatory stage, including start, computer reset, start charging outfeed belt conveyor, charging/Perfuming machine, feed liquid content On-line measurement instrument and cutting agency start blanking；In the step 2 smoked sheet feed rate setting control stage, using smoked sheet metered flow as sets target flow value, stream is entered to smoked sheet Amount carries out flow rate set value control：Control computer (15) is according to the P of the belted electronic balance (14) of receptionCigarette iAnd the M of drimeter (13)iSignal Calculate PCigarette i(1-Mi) value, and the value and sets target flow value or metered flow value PCigarette volumeDifference DELTA PCigarette i, control computer Further according to Δ PCigarette iControl signal is sent to feeding conveyor (12),The control signal is used to adjust conveyer tape speed, increaseds or decreases smoked sheet flow PCigarette i, to reduce Δ PCigarette i；Step 3 judges the stage, with PCigarette i(1-Mi)≥QPCigarette volumeFor boundary, wherein Q is setting constant, is realized to measuring pump discharge PExpect i Automatic switchover：Control computer (15) is according to the P of the belted electronic balance (14) of receptionCigarette iAnd drimeter (13) MiSignal, calculate PCigarette i(1-Mi) and by the value and QPCigarette volumeValue is compared judgement, PCigarette i(1-Mi)≥QPCigarette volume；Step 3.1 PCigarette i(1-Mi) it is less than QPCigarette volume, charging/Perfuming machine metering pump discharge PExpect iFed by the feed molar ratio m of setting, whereinCharging：Control computer (15) calculates P according to feed molar ratio m set in advanceExpect i, PExpect i=PCigarette i(1-Mi) × m, and according to PExpect iIt is right The measuring pump (16-4) of charging/Perfuming machine sends control signal, and the control signal is used for the stream for adjusting measuring pump (16-4) Amount makes it equal to PExpect i, return to step 2 after the completion of charging；Step 3.2 PCigarette i(1-Mi) it is more than or equal to QPCigarette volume, charging/Perfuming machine metering pump discharge PExpect iBy Δ XiValue is fed：The X that control computer (15) measures according to feed liquid content on-line measurement instrument (17)iValue and the target feed liquid content of setting Value m orCalculate the two difference DELTA Xi, control computer is according to Δ XiThe measuring pump (16-4) of charging/Perfuming machine is sent Control signal, the control signal are used for the flow P for adjusting measuring pump (16-4)Cigarette i, to reduce Δ XiValue, is returned after the completion of charging Step 2；The step 3.2 further comprises that control computer (15) is according to Δ XiValue carries out PID arithmetic or fuzzy control, draws back Control amount, control computer send control signal according to control amount is returned to measuring pump (16-4), and the control signal is used to adjust to measure Pump discharge, to reduce Δ XiValue, return to step 2 after the completion of charging, so as to realize feed liquid content XiOnline setting control.
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| CN105725254B (en) * | 2016-04-21 | 2017-06-23 | 江苏中烟工业有限责任公司 | A kind of tobacco flavoring charging process based on essence and flavoring agent withholding rate |
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Effective date of registration: 20180912 Address after: 100037, 5, 402, Zhong Li 2 building, million village street, Xicheng District, Beijing. Co-patentee after: BEIJING BANGRUIDA ELECTROMECHANICAL EQUIPMENT CO., LTD. Patentee after: Di Shengcai Address before: 100037, 5, 402, Zhong Li 2 building, million village street, Xicheng District, Beijing. Patentee before: Di Shengcai |