CN104168782A - Method for humidifying starting tobacco material - Google Patents
Method for humidifying starting tobacco material Download PDFInfo
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- CN104168782A CN104168782A CN201280071421.2A CN201280071421A CN104168782A CN 104168782 A CN104168782 A CN 104168782A CN 201280071421 A CN201280071421 A CN 201280071421A CN 104168782 A CN104168782 A CN 104168782A
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- China
- Prior art keywords
- flow rate
- deviation
- tobacco material
- control
- threshold value
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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
- A24B3/02—Humidifying packed raw tobacco
-
- 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
- A24B3/12—Steaming, curing, or flavouring tobacco
Abstract
Provided is a humidification method which comprises supplying a starting tobacco material and steam into a rotor and humidifying the starting tobacco material during the passage of the starting tobacco material through the rotor. The humidification method involves: a main control step for determining a deviation between the outlet material temperature of the starting tobacco material at the outlet of the rotor and a target temperature and then cascade-controlling the flow rate of the steam to be supplied into the rotor so as to eliminate the deviation, wherein multiple control areas exist in the cascade-control and the supply flow rate is controlled on the basis of a standard flow rate in each of the control areas; and a side control step, said side control step being performed in parallel to the main control step, for changing the standard flow rate on the basis of the average deviation during a definite period.
Description
Technical field
The present invention relates to be applicable to the moisture control method of the tobacco materials such as tobacco leaf.
Background technology
In the processing of the tobacco leaf as tobacco material, comprise the damping operation that its moisture is increased.Such damping operation is when removing petiole from tobacco leaf, for tobacco leaf being paid to the important operation of flexibility.
The moisture control method of carrying out above-mentioned damping operation is for example disclosed in following patent documentation 1.The moisture control method of this patent documentation 1 is measured respectively initial stage moisture, initial stage temperature and the quantity delivered of tobacco leaf of porch of damping machine, moisture and the temperature of the tobacco leaf after the damping in damping machine exit, based on this measurement result, moisture and quantity of steam that control should be supplied with to tobacco leaf, be adjusted into desired value by the moisture of the tobacco leaf after damping and temperature respectively.
Prior art document
Patent documentation
Patent documentation 1:(Japan) examined patent publication 63-62185 (JP1988-62185B2)
Summary of the invention
Invent technical problem to be solved
The moisture control method of above-mentioned patent documentation 1, can be adjusted into desired value by the moisture of the tobacco leaf after damping, but the moisture that need to measure respectively tobacco leaf in entrance and the outlet of damping machine.Therefore, considering when tobacco leaf is paid to flexibility, if use the moisture control method of patent documentation 1, the control quantity of steam being controlled at more than essential value becomes complicated.
The object of the present invention is to provide a kind of moisture control method, can make simply the moisture of tobacco material increase, and tobacco material is paid to necessary flexibility.
Technical scheme for technical solution problem
Utilize the moisture control method of tobacco material of the present invention can reach above-mentioned purpose, moisture control method of the present invention is conceived to the outlet material temperature of the tobacco material after damping, controls the quantity delivered of steam, so that this outlet material temperature is maintained to target temperature.
In detail, the invention provides a kind of moisture control method, to a rotating body, supply with tobacco material and steam, at tobacco material, tobacco material is carried out to damping in by the process of a rotating body, this moisture control method possesses following operation:
While supplying with steam with supply flow rate in left-hand tools body, detect the operation of the outlet material temperature of the tobacco material of just having discharged from the outlet of rotary body;
Obtain the target temperature of tobacco material and the operation of the first deviation between outlet material temperature in exit;
Based on the first deviation, the standard flow based on steam is controlled the main control operation of the supply flow rate of steam,
Main control operation,
From according to the first inclined to one side extent and positive and negative a plurality of control areas of dividing, select the control area corresponding with the first deviation,
According to the control sequence in selected control area, control the supply flow rate of steam.
According to above-mentioned moisture control method, in the damping of tobacco material, detect the outlet material temperature of tobacco material, for making this outlet material temperature consistent with target temperature, based on standard flow, control the supply flow rate of the steam of supplying with to a rotating body.If in this wise the outlet material temperature of the tobacco material after damping is adjusted into target temperature, can make the moisture of tobacco material easily increase.
Specifically, main control operation comprises:
Insensitive region, it is selected when the first deviation is between positive first threshold and negative Second Threshold, and supply flow rate is maintained to standard flow;
The cubic function control area of positive side, it surpasses first threshold and selected in the 3rd positive threshold value larger than first threshold time in the first deviation, the modified flow rate calculating according to the cubic function based on this first deviation, makes supply flow rate reduce from standard flow;
The cubic function control area of minus side, it surpasses negative Second Threshold and selected in the 4th negative threshold value larger than Second Threshold time in the first deviation, the modified flow rate calculating according to the cubic function based on this first deviation, makes supply flow rate increase from standard flow.
If the control area of above-mentioned main control operation comprises the cubic function control area of positive side and minus side, these cubic function control areas are effective in the variation of moment promptly compensating with respect to outlet material temperature.
Preferably main control operation also comprises:
The linear function control area of positive side, it surpasses the 3rd positive threshold value and selected in the 5th positive threshold value larger than the 3rd threshold value time in the first deviation, the modified flow rate calculating according to the linear function based on this first deviation, makes supply flow rate reduce from standard flow;
The linear function control area of minus side, it surpasses the 4th negative threshold value and selected in the 6th negative threshold value larger than the 4th threshold value time in described the first deviation, the modified flow rate calculating according to the linear function based on this first deviation, makes supply flow rate increase from standard flow.
If the control area of main control operation also comprises the linear function control area of positive side and minus side, these linear function control areas make supply flow rate according to increasing and decreasing to the proportional modified flow rate of the first deviation, can not make supply flow rate sharply change ground, use gate material temperature and promptly get back to target temperature.
More preferably, main control operation comprises:
The territory, fixed control area of positive side, it is selected when the first deviation surpasses the 5th positive threshold value, and supply flow rate is limited in to certain lower limit flow;
The territory, fixed control area of minus side, it is selected when the first deviation surpasses described the 6th negative threshold value, and supply flow rate is limited in to certain upper limit flow.
Positive side like this and the territory, fixed control area of minus side stop the excessive increase and decrease of supply flow rate.
In addition, moisture control method of the present invention can also possess the sub-control operation with above-mentioned main control operation executed in parallel.This sub-control operation comprises the control area that resets of periodically repeatedly carrying out standard flow, and this mean value that resets first deviation of control area based in during certain resets standard flow.
The harmful effect to main control operation that the lasting variation of such FEEDBACK CONTROL reduction outlet material temperature brings, makes main control operation more stable to the control of outlet material temperature.
Preferred moisture control method of the present invention can also be included in the startup of carrying out before main control operation and control operation.This startup is controlled and is usingd the startup flow more than standard flow and to a rotating body, supply with steam as supply flow rate.
The execution of such startup control operation reaches the 7th threshold value in the first deviation and reaches in the 8th threshold value with the second deviation between the temperature of the steam in the exit of interior or target temperature and rotary body, or stops through time between the starting period of regulation from starting starting of controlling.
In addition, moisture control method of the present invention can also be included in to start and control the switching controls operation of carrying out between operation and main control operation.This switching controls operation, from according to the first inclined to one side extent and positive and negative a plurality of switching controls region of dividing, is selected the switching controls region corresponding with the first deviation, according to the control sequence in selected switching controls region, controls described supply flow rate.
The moisture control method of the invention described above is applicable to the damping as the tobacco leaf of tobacco material.
The effect of invention
The moisture control method of tobacco material of the present invention, only the outlet material temperature based on tobacco material and the first deviation between target temperature, just can control the supply flow rate of steam, so can easily the outlet material temperature of tobacco material be adjusted into target temperature.Consequently, can make the tobacco material after damping comprise sufficient moisture.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of carrying out the damping machine of moisture control method of the present invention.
Fig. 2 means the functional block diagram of function of the damping controller of Fig. 1.
Fig. 3 means and starts in control, the curve map of the outlet material temperature of tobacco material and the variation of outlet steam temperature.
Fig. 4 means the curve map of a plurality of control areas that switching controls comprises.
Fig. 5 is for the curve map of the tail end of switching controls is described.
Fig. 6 means that FF controls the curve map of a plurality of control areas that comprise.
Fig. 7 is the curve map of controlling the FB control of executed in parallel with FF for illustrating.
Fig. 8 calculates the target temperature of controlling for FB and exports the sampling of deviation and the figure of average deviation between material temperature for illustrating.
The specific embodiment
Before the moisture control method of tobacco material of the present invention is described, below, with reference to Fig. 1, to carrying out the damping machine of moisture control method, describe briefly.
Damping machine possesses the hollow rotating body 10 of drum, and this rotary body 10 has the feed(raw material)inlet 12 of the tobacco leaf (following, referred to as raw material) receiving as tobacco material and discharges the material outlet 14 of the raw material after damping.Here, raw material is the mixture of multiple tobacco leaf, and this mixture is for the manufacture of the cigarette of certain species.
Rotary body 10 can be to a direction rotation, by feed(raw material)inlet 12 be supplied to raw material in rotary body 10 along with the rotation of rotary body 10 from feed(raw material)inlet 12 in material outlet 14 is shifted into rotary body 10, in this handover process, raw material is fed into the steam in rotary body 10, specifically by water vapour damping.Raw material after damping is discharged to conveyance path from material outlet 14, on conveyance path towards the processing position of back segment (not shown) conveyance.
In order to supply with steam to rotary body 10, damping machine also possesses the feed path 16 of steam, and this feed path 16 comprises the inner space of rotary body 10 in its part.In detail, feed path 16 has at rotary body 10 interior steam inlet 18 and the steam (vapor) outlet 20 of opening respectively, and steam inlet 18 is positioned at feed(raw material)inlet 12 sides, and steam (vapor) outlet 20 is positioned at material outlet 14 sides.
Feed path 16 has steam supply source, specifically has from boiler room and extends to the upstream portion of steam inlet 18 of rotary body 10 and the downstream part of extending from the steam (vapor) outlet 20 of rotary body 10.Upstream portion at feed path 16 disposes respectively diaphragm type steam flow regulator 22 and steam-flow meter 24, the downstream part of feed path 16 at its end towards atmosphere opening.
Steam flow regulator 22 and steam-flow meter 24 are electrically connected to arithmetic unit 26 respectively.Supply with respectively that have should be to the desired value Qo of the steam flow of rotary body 10 interior supplies and the actual steam flow Qa that utilizes steam-flow meter 24 to measure this arithmetic unit 26 is interior, arithmetic unit 26, for making actual steam flow Qa consistent with desired value Qo, is controlled the action of steam flow regulator 22.
At material outlet 14, dispose temperature sensor 28, this temperature sensor 28 is measured the outlet material temperature Ta of the raw material of discharging from rotary body 10.On the other hand, in the downstream part of feed path 16, dispose temperature sensor 30, this temperature sensor 30 is measured the delivery temperature Ts of the steam of discharging from rotary body 10.
Outlet material temperature Ta and delivery temperature Ts are fed into arithmetic unit 32 as the signal of telecommunication, and arithmetic unit 32 is based on outlet material temperature Ta, delivery temperature Ts and various setting value, and the desired value Qo of calculation of steam flow, is supplied to arithmetic unit 26 by this desired value Qo.In addition, setting value comprises the kind of raw material or the capacity of rotary body 10 etc.
As shown in Figure 2, arithmetic unit 32 coordinates with arithmetic unit 26, carries out to start and controls operation, switching controls operation and tandem control operation, and the details of these being controlled to operations below describes.
Start and control operation
When above-mentioned damping machine running,, raw material is fed into rotary body 10 when interior, and arithmetic unit 32 is set as starting flow Qst (kg/h) by the desired value Qo of steam flow (supply flow rate of the steam of supplying with to rotary body 10), and this startup flow Qst is supplied to arithmetic unit 22.Starting flow Qst here, is the value determining based on above-mentioned setting value.Thus, in starting the execution of controlling operation, actual steam flow Qa is adjusted to and starts flow Qst.
Above-mentioned startup is controlled when any in following three jump conditions 1 to 3 of operation set up and is finished.
Jump condition 1: the target temperature To of the raw material at material outlet 14 places and the deviation delta t between delivery temperature Ts ' (=To-Ts) in threshold value Th_a.
Jump condition 2: the deviation delta t (=To-Ta) between the target temperature To of raw material and outlet material temperature Ta is in threshold value Th_b.
Jump condition 3: reach T1 from starting the elapsed time of the beginning of controlling operation.
Above-mentioned target temperature To is a value of setting according to the kind of raw material, and threshold value Th_a, Th_b are respectively for example 2 ℃, 5 ℃.
As shown in Figure 3, conventionally, the tendency of delivery temperature Ts in rising quickly than outlet material temperature Ta, therefore, on the basis of above-mentioned jump condition 2, by additional jump condition 1, can make startup control operation and promptly end.And, elongated undesirably during jump condition 3 prevention startup control operations.
When any in above-mentioned jump condition 1 to 3 set up, arithmetic unit 32 makes to start control operation to be finished, and then, carries out following switching controls operation.
Switching controls operation
Here, first, arithmetic unit 32 makes the desired value Qo of steam flow change into standard flow Qb from starting flow Qst.This standard flow Qb is fewer than starting flow Qst, and flow Qst is identical with starting, and is the value determining based on above-mentioned setting value.
Arithmetic unit 32 comprises the control diagram for the switching controls shown in Fig. 4.This control diagram is size and the positive and negative a plurality of control areas divided according to above-mentioned deviation delta t, in detail, there is insensitive region R1, cubic function control area R2, the R3 of the positive side defining respectively in the both sides of this insensitive region R1 and minus side, the positive side defining respectively in the outside of these cubic function control areas R2, R3 and territory, fixed control area R4, the R5 of minus side.
In deviation delta t, when meeting following formula, select insensitive region R1.
－Th_d≤Δt≤Th_c
Here, as can be seen from Figure 4, threshold value Th_c ,-Th_d is the value of 1 ℃ of following little plus or minus.In addition, threshold value Th_c, |-Th_d| can equate.
When selecting insensitive region R1, deviation delta t is little, so arithmetic unit 32 maintains standard flow Qb by the desired value Qo of steam flow.Thus, at insensitive region R1, effective supply flow Qa is adjusted to standard flow Qb.
When deviation delta t meets following formula, select the cubic function control area R2 of positive side.
Th_c＜Δt≤Th_e
Here, threshold value Th_e be than threshold value Th_c large for example, on the occasion of (4 ℃).
When selecting cubic function control area R2, the cubic function F1[(a1 * Δ t of arithmetic unit 32 based on deviation delta t)
3] calculate positive modified flow rate C1.Here, a1 is coefficient.And the supply flow rate Qc1 (=Qb-C1) that modified flow rate C1 is reflected on standard flow Qb changed into the desired value Qo of steam flow by arithmetic unit 32.Thus, at cubic function control area R2, effective supply flow Qa is adjusted to supply flow rate Qc1.
Here, modified flow rate C1 is that the cubic function F1 based on deviation delta t calculates, and therefore, along with the increase of deviation delta t, along cubic curve, increases.Thus, if deviation delta t is little, supply flow rate Qc1 reduces from standard flow Qb hardly, if deviation delta t is increasing, supply flow rate Qc1 compares with standard flow Qb sharp and reduces.Consequently, accordingly, head for target temperature T o reduces effectively for the outlet material temperature Ta of raw material and the size of deviation delta t.
On the other hand, when deviation delta t meets following formula, select the cubic function control area R3 of minus side.
－Th_f≤Δt＜－Th_d
Here, threshold value-Th_f is the negative value (for example-3.2 ℃ left and right) larger than threshold value-Th_d.
When selecting cubic function control area R3, the cubic function F2[(a2 * Δ t of arithmetic unit 32 based on deviation delta t)
3] calculating modified flow rate C2.Here, a2 is coefficient.
In this case, the supply flow rate Qc2 (=Qb-C2) that modified flow rate C2 is reflected on standard flow Qb changed into the desired value Qo of steam flow by arithmetic unit 32.Here, deviation delta t is negative value, and the modified flow rate C2 that therefore the cubic function F2 based on deviation delta t calculates is also negative value.Thus, at cubic function control area R3, supply flow rate Qc2, that is, the size of actual steam flow Qa and deviation delta t increases accordingly effectively, and consequently, the outlet material temperature Ta head for target temperature T o of raw material promptly rises.
It is useful adopting in this wise above-mentioned cubic function not only at the outlet material temperature Ta head for target temperature T o that makes raw material, effectively to change, also can be in the calculating of relevant modified flow rate C1, C2, and the processing of the plus or minus of deviation delta t is easy.
In addition, when deviation delta t meets following formula, select territory, fixed control area R4.
Th_e＜Δt
In this case, arithmetic unit 32, based on following formula, calculates the supply flow rate Qc3 as the desired value Qo of steam flow.
Qc3＝Qb－C3(＝F1[(a1×Th_e)
3])
Thus, at territory, fixed control area R4, actual steam flow Qa is adjusted to supply flow rate Qc3.
Here, modified flow rate C3 be on the occasion of, so supply flow rate Qc3 is restricted to certain minimum of a value, at this state, outlet material temperature Ta head for target temperature T o reduces.
On the other hand, when deviation delta t meets following formula, select territory, the fixed control area R5 of positive side.
Δt＜－Th_f
In this case, arithmetic unit 32, based on following formula, as the desired value Qo of steam flow, calculates supply flow rate Qc4.
Qc4＝Qb－C4(＝F2[a2×(－Th_f)
3])
Here, modified flow rate C4 is negative value, so supply flow rate Qc4 is restricted to certain maximum.Thus, at territory, fixed control area R5, actual steam flow Qa is adjusted to supply flow rate Qc4, and consequently, the outlet material temperature Ta head for target temperature T o of raw material promptly rises.
Any in following jump condition 4,5 of above-mentioned switching controls finishes while setting up.
Jump condition 4: deviation delta t is in threshold value Th_g (with reference to Fig. 5).
Jump condition 5: reach T2 from the elapsed time of the beginning of switching controls.
Here, threshold value Th_g meets the relation of following formula.
Th_g＜Th_a
When jump condition 3 or 4 is set up, arithmetic unit 32 finishes switching controls operation, carries out following tandem and controls operation.
Tandem is controlled operation
This tandem is controlled operation and is comprised as feedforward (FF) the control operation of main control operation and control operation as the feedback (FB) of sub-control operation, below, FF control operation and FB control operation are described.
FF controls operation
Arithmetic unit 32 also comprises the control diagram of controlling operation for FF shown in Fig. 6, and this control diagram is according to the size of deviation delta t and be positive and negatively divided into a plurality of control areas, in detail, has: insensitive region R6; At the positive side of the both sides of this insensitive region R6 separate provision and cubic function control area R7, the R8 of minus side; The positive side of separate provision and linear function control area R9, the R10 of minus side outside these cubic function control areas R7, R8; And, at the positive side of outside separate provision and territory, fixed control area R11, the R12 of minus side of these linear function control areas R9, R10.
When deviation delta t meets following formula, select insensitive region R6.
－Th_i≤Δt≤Th_h
Here, threshold value Th_h ,-Th_i are the value of 1 ℃ of following little plus or minus as shown in Figure 6.In addition, threshold value Th_h, |-Th_i| can equate.
When selecting insensitive region R6, deviation delta t is little, so arithmetic unit 32 maintains standard flow Qb by the desired value Qo of steam flow.That is,, at insensitive region R6, actual steam flow Qa is adjusted to standard flow Qb.
When deviation delta t meets following formula, select the cubic function control area R7 of positive side.
Th_h＜Δt≤Th_j
Here, threshold value Th_j be than threshold value Th_h large for example, on the occasion of (3 ℃).
When selecting cubic function control area R7, the cubic function F3[(a1 * Δ t of arithmetic unit 32 based on deviation delta t)
3] calculate positive modified flow rate C5, the desired value Qo of steam flow is changed into the supply flow rate Qc5 (=Qb-C5) that reflects modified flow rate C5 on standard flow Qb.Thus, at cubic function control area R7, actual steam flow Qa is adjusted to supply flow rate Qc5.
On the other hand, when deviation delta t meets following formula, select the cubic function control area R8 of minus side.
－Th_k≤Δt＜－Th_i
Here, threshold value-Th_k is the negative value (for example-2.5 ℃ left and right) larger than threshold value-Th_i.
When selecting cubic function control area R8, cubic function F4[(a2 * Δ the t of arithmetic unit 32 based on deviation delta t) 3] calculate negative modified flow rate C6, will on standard flow Qb, reflect that the supply flow rate Qc6 (=Qb-C6) of modified flow rate C6 is set as the desired value Qo of steam flow.Thus, at cubic function control area R8, actual steam flow Qa is adjusted to supply flow rate Qc6.
Here, known from the explanation of above-mentioned switching controls, modified flow rate C5, C6 are that cubic function F3, the F4 based on deviation delta t calculates respectively, therefore supply flow rate Qc5, Qc6 compare with standard flow Qb, reduce accordingly or increase with the size of deviation delta t, consequently, the outlet material temperature Ta head for target temperature T o of raw material changes effectively.
Here, obviously, for the calculating of modified flow rate C5, C6, it is easy that the processing of the plus or minus of deviation delta t becomes.
When deviation delta t meets following formula, select the linear function control area R9 of positive side.
Th_j＜Δt≤Th_l
Th_l is the value (for example 5.5 ℃) larger than Th_j.
When selecting linear function control area R9, the linear function F5 (b1 * Δ t) of arithmetic unit 32 based on deviation delta t calculates positive modified flow rate C7.B1 is coefficient.And arithmetic unit 32 will make modified flow rate C7 be reflected in the desired value Qo that supply flow rate Qc7 (=Qb-C7) on standard flow Qb is set as steam flow.Thus, in the R9 of linear function control area, actual steam flow Qa is adjusted to supply flow rate Qc7.
On the other hand, when deviation delta t meets following formula, select the linear function control area R10 of minus side.
－Th_m≤Δt＜－Th_k
-Th_m is for example, than-negative value (-4.3 ℃) that Th_k is large.
When selecting linear function control area R10, the linear function F6 (b2 * Δ t) of arithmetic unit 32 based on deviation delta t calculates negative modified flow rate C8.B2 is coefficient.Then, arithmetic unit 32 is set as the supply flow rate Qc8 (=Qb-C8) that modified flow rate C8 is reflected on standard flow Qb the desired value Qo of steam flow.Thus, at linear function control area R10, actual steam flow Qa is adjusted to supply flow rate Qc8.
The modified flow rate C7 here, C8 are respectively that linear function F5, the F6 based on deviation delta t calculates, and therefore become the value being in proportion with deviation delta t.Therefore, supply flow rate Qc7, Qc8 and deviation delta t reduce accordingly or increase.Consequently, the outlet material temperature Ta head for target temperature T o of raw material promptly changes.
In addition, when deviation delta t meets following formula, select territory, the fixed control area R11 of positive side.
Th_l<Δt
In this case, arithmetic unit 32 calculates supply flow rate Qc9 based on following formula, this supply flow rate Qc9 is set as to the desired value Qo of steam flow.
Qc9＝Qb－C9(＝F5(b1×Th_l))
Here, modified flow rate C9 be on the occasion of, so supply flow rate Qc9 is restricted to certain minimum of a value, the outlet material temperature Ta head for target temperature T o of raw material reduces.
On the other hand, when deviation delta t meets following formula, select territory, the fixed control area R12 of minus side.
Δt<－Th_m
In this case, arithmetic unit 32, based on following formula, calculates supply flow rate Qc10, this supply flow rate Qc10 is set as to the desired value Qo of steam flow.
Qc10＝Qb－C10(＝F6(b2×－Th_m))
Here, modified flow rate C10 is negative value, so supply flow rate Qc10 is restricted to certain maximum, the outlet material temperature Ta head for target temperature T o rising of raw material.
Above-mentioned FF controls operation by making the outlet material temperature Ta damping of carrying out raw material consistent with target temperature To of raw material, therefore can easily to the raw material after damping, pay necessary moisture.
And the combination of above-mentioned cubic function control area R7, R8 and linear function control area R9, R10, promptly eliminates the variation of the moment of outlet material temperature Ta, makes the outlet material temperature Ta of raw material stably maintain target temperature To.
In addition, the control area in FF control operation comprises territory, fixed control area R11, the R12 of positive side and minus side, even if therefore deviation delta t is large, the supply flow rate of the steam of supplying with to rotary body 10 increases only with spending.
In addition, even if be supplied to initial stage moisture or the quantity delivered of raw material of the feed(raw material)inlet 12 of rotary body 10, change, the execution that this variation is not also controlled operation to FF does not have any impact, and the outlet material temperature Ta of raw material is adjusted to target temperature To.
In addition, above-mentioned FF controls operation and can comprise: during transfer from from cubic function control area R7 to linear function control area R9, during the transfer from cubic function control area R8 to linear function control area R10, the transfer stand-by time of regulation.
FB controls operation
As shown in Figure 7, FB controls operation and above-mentioned FF control operation executed in parallel.
In detail, arithmetic unit 32 is controlled starting after the stand-by time T3 of regulation of operation from above-mentioned tandem, starts FB and controls operation.
At FB, control after the beginning of operation, arithmetic unit 32 is T4 between the operational stage of regulation, repeats the sampling of deviation delta t within certain cycle, calculates the average deviation Δ t_av of the deviation delta t in T4 between operational stage.
Between operational stage, in T4, suppose that deviation delta t changes respectively as shown in Fig. 8 (a), (b), (c) here.Fig. 8 (a) in the situation that, average deviation Δ t_av is 0, but the in the situation that of Fig. 8 (b), (c), the value of have respectively+d of average deviation Δ t_av ,-d.
When obtaining by this way average deviation Δ t_av, arithmetic unit 32, based on average deviation Δ t_av, calculates the modified flow rate C11 with respect to the plus or minus of standard flow Qb, uses this modified flow rate C11 that standard flow Qb is reset to new standard flow Qb '.
Specifically, the substitution formula based on following can be obtained standard flow Qb '.
Qb’←Qb－C11
Such standard flow Qb ' T4 between operational stage finish to moment that once (resetting control area) T5 starts FB the term of execution be effectively, at above-mentioned FF, control in operation and used.Then, repeatedly carry out the resetting of standard flow Qb ' of T5 term of execution of the calculating of the modified flow rate C11 of T4 between above-mentioned operational stage and FB.
As shown in Figure 7, above-mentioned FB controls operation according to the lasting minor variations of the outlet material temperature Ta of raw material, and standard flow Qb is set as to standard flow Qb ' again.Thus, FF controls operation by using standard flow Qb ', can be by the outlet material temperature Ta precision of raw material higher and stably maintain target temperature To.That is, FB controls the combination of operation and FF control operation, that is, tandem is controlled the damping that operation is good at the raw material of the outlet material temperature Ta that is conceived to raw material.
The invention is not restricted to the moisture control method of an above-mentioned embodiment, can implement various changes.
For example, in above-mentioned startup, control operation, switching controls operation and tandem and control in the explanation of operation, represented various temperature, but these temperature are only an example, can change.
And, in the damping of raw material, in the situation that the kind of the raw material that left-hand tools body 10 is supplied with changes, that is to say, in the situation that target temperature To changes, as shown in the dotted line in Fig. 2, moisture control method of the present invention is from switching controls operation.
In addition, moisture control method raw material of the present invention is not limited to tobacco leaf, can be applicable to various raw materials.
Description of reference numerals
10: rotary body, 12: feed(raw material)inlet, 14: material outlet, 16: the feed path of steam, 18: steam inlet, 20: steam (vapor) outlet, 22: steam flow adjuster, 24: steam flow, 26: arithmetic unit, 28: temperature sensor, 30: temperature sensor, 32: arithmetic unit, R6: insensitive region, R7, R8: cubic function control area, R9, R10: linear function control area, R11, R12: territory, fixed control area, T4: between operational stage, the term of execution of T5:FB
Claims (9)
1. a moisture control method for tobacco material, is characterized in that,
To a rotating body, supply with tobacco material and steam, at described tobacco material, described tobacco material carried out to damping in by the process of described a rotating body,
Possess following operation:
When supplying with described steam to described a rotating body with supply flow rate, detect the operation of the outlet material temperature of the described tobacco material of just having discharged from the outlet of described rotary body;
Obtain the target temperature of tobacco material and the operation of the first deviation between described outlet material temperature in described exit;
Based on described the first deviation, the standard flow based on steam is controlled the main control operation of described supply flow rate,
Described main control operation,
From according to the described first inclined to one side extent and positive and negative a plurality of control areas of dividing, select the control area corresponding with described the first deviation,
According to the control sequence in selected control area, control the described supply flow rate of described steam.
2. the moisture control method of tobacco material according to claim 1, is characterized in that,
Described control area comprises:
Insensitive region, it is selected when described the first deviation is between positive first threshold and negative Second Threshold, and described supply flow rate maintains described standard flow;
The cubic function control area of positive side, it surpasses described first threshold and selected in the 3rd positive threshold value larger than described first threshold time in described the first deviation, the modified flow rate calculating according to the cubic function based on this first deviation, makes described supply flow rate reduce from described standard flow;
The cubic function control area of minus side, it surpasses described negative Second Threshold and selected in the 4th negative threshold value larger than described Second Threshold time in described the first deviation, the modified flow rate calculating according to the cubic function based on this first deviation, makes described supply flow rate increase from described standard flow.
3. the moisture control method of tobacco material according to claim 2, is characterized in that,
Described control area also comprises:
The linear function control area of positive side, it surpasses described the 3rd positive threshold value and selected in the 5th positive threshold value larger than described the 3rd threshold value time in described the first deviation, the modified flow rate calculating according to the linear function based on this first deviation, makes described supply flow rate reduce from described standard flow;
The linear function control area of minus side, it surpasses described the 4th negative threshold value and selected in the 6th negative threshold value larger than described the 4th threshold value time in described the first deviation, the modified flow rate calculating according to the linear function based on this first deviation, makes supply flow rate increase from described standard flow.
4. the moisture control method of tobacco material according to claim 1, is characterized in that,
Described control area also comprises:
The territory, fixed control area of positive side, it is selected when described the first deviation surpasses described the 5th positive threshold value, and described supply flow rate is limited in to certain lower limit flow;
The territory, fixed control area of minus side, it is selected when described the first deviation surpasses described the 6th negative threshold value, and described supply flow rate is limited in to certain upper limit flow.
5. the moisture control method of tobacco material according to claim 1, is characterized in that,
Also possess the sub-control operation with described main control operation executed in parallel,
Described sub-control operation comprises the control area that resets of periodically repeatedly carrying out standard flow,
The described mean value that resets described first deviation of control area based in during certain resets described standard flow.
6. the moisture control method of tobacco material according to claim 1, is characterized in that,
Also be included in the startup of carrying out before described main control operation and control operation,
Described startup is controlled operation and is usingd the startup flow more than described standard flow and to described a rotating body, supply with steam as described supply flow rate.
7. the moisture control method of tobacco material according to claim 6, is characterized in that,
The execution that operation is controlled in described startup described the first deviation reach the 7th threshold value with the second deviation between the temperature of the described steam in the exit of interior or described target temperature and described rotary body, reach the 8th threshold value with interior or from described startup, control start between the starting period through stipulating time stop.
8. the moisture control method of tobacco material according to claim 1, is characterized in that,
Also be included in described startup and control the switching controls operation of carrying out between operation and described main control operation,
Described switching controls operation, from according to the described first inclined to one side extent and positive and negative a plurality of switching controls region of dividing, is selected the switching controls region corresponding with described the first deviation,
According to the control sequence in selected switching controls region, control described supply flow rate.
9. the moisture control method of tobacco material according to claim 1, is characterized in that,
Described tobacco material is tobacco leaf.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2012/056716 WO2013136487A1 (en) | 2012-03-15 | 2012-03-15 | Method for humidifying starting tobacco material |
Publications (2)
| Publication Number | Publication Date |
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| CN104168782A true CN104168782A (en) | 2014-11-26 |
| CN104168782B CN104168782B (en) | 2017-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201280071421.2A Active CN104168782B (en) | 2012-03-15 | 2012-03-15 | The moisture control method of tobacco material |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2798965B1 (en) |
| JP (1) | JP5709289B2 (en) |
| CN (1) | CN104168782B (en) |
| PL (1) | PL2798965T3 (en) |
| WO (1) | WO2013136487A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105595390B (en) * | 2015-12-30 | 2017-03-22 | 山东中烟工业有限责任公司 | Method for improving stability of outlet moisture of stem moistening machine in stub bar stage |
| CN108378406B (en) * | 2018-04-11 | 2021-02-19 | 红塔烟草(集团)有限责任公司 | Temperature and humidity control method and system for moisture regain area of tobacco flake redrying machine |
| CN109471404A (en) * | 2018-11-21 | 2019-03-15 | 河南中烟工业有限责任公司 | A kind of one bonded state detection method of charging system and system |
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- 2012-03-15 CN CN201280071421.2A patent/CN104168782B/en active Active
- 2012-03-15 EP EP12871593.5A patent/EP2798965B1/en active Active
- 2012-03-15 WO PCT/JP2012/056716 patent/WO2013136487A1/en active Application Filing
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| US4709708A (en) * | 1983-07-21 | 1987-12-01 | The Japan Tobacco & Salt Public Corporation | Control system for humidity controller of tobacco leaves |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104168782B (en) | 2017-10-13 |
| EP2798965A4 (en) | 2015-11-11 |
| JP5709289B2 (en) | 2015-04-30 |
| EP2798965A1 (en) | 2014-11-05 |
| PL2798965T3 (en) | 2019-12-31 |
| JPWO2013136487A1 (en) | 2015-08-03 |
| WO2013136487A1 (en) | 2013-09-19 |
| EP2798965B1 (en) | 2019-07-24 |
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