CN104168782B - The moisture control method of tobacco material - Google Patents
The moisture control method of tobacco material Download PDFInfo
- Publication number
- CN104168782B CN104168782B CN201280071421.2A CN201280071421A CN104168782B CN 104168782 B CN104168782 B CN 104168782B CN 201280071421 A CN201280071421 A CN 201280071421A CN 104168782 B CN104168782 B CN 104168782B
- Authority
- CN
- China
- Prior art keywords
- deviation
- control
- flow rate
- tobacco material
- threshold value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
The present invention provides a kind of moisture control method, tobacco material and steam are supplied to a rotating body, damping is carried out to tobacco material during tobacco material is by a rotating body, the moisture control method obtains the deviation between the outlet material temperature and target temperature of the tobacco material in the exit of rotary body, in order to eliminate the deviation and the supply flow rate of the steam of counter-rotation body supply carries out serials control, the moisture control method includes：Main control process, the serials control has multiple control areas, and main control process controls supply flow rate in each control area based on standard flow；Sub-control process, it is performed parallel with the main control process, and the average value based on the deviation in certain period changes standard flow.
Description
Technical field
The present invention relates to the moisture control method suitable for tobacco materials such as tobacco leaves.
Background technology
In the processing as the tobacco leaf of tobacco material, including make the increased damping process of its moisture.It is such to adjust
Wet process is the important process for paying flexibility to tobacco leaf when removing petiole from tobacco leaf.
For example Patent Document 1 discloses the moisture control method for performing above-mentioned damping process below.The patent document 1
The initial moisture content, temperature at initial stage and quantity delivered, damping machine that moisture control method determines the tobacco leaf of the porch of damping machine respectively go out
The moisture and temperature of the tobacco leaf after damping at mouthful, based on the measurement result, control the moisture that should be supplied to tobacco leaf
And quantity of steam, the moisture and temperature of the tobacco leaf after damping are adjusted to desired value respectively.
Prior art literature
Patent document
Patent document 1：(Japan) examined patent publication 63-62185 (JP1988-62185B2)
The content of the invention
The technical problems to be solved by the invention
The moisture control method of above-mentioned patent document 1, can be adjusted to desired value, still by the moisture of the tobacco leaf after damping
Need to determine the moisture of tobacco leaf respectively in the entrance of damping machine and outlet.Therefore, in view of paying flexibility to tobacco leaf
When, if using the moisture control method of patent document 1, controlling the control more than essential value to become complicated quantity of steam.
It is an object of the invention to provide a kind of moisture control method, can simply make the moisture of tobacco material increases,
And necessary flexibility is paid to tobacco material.
Technical scheme for solving technical problem
Moisture control method using the tobacco material of the present invention can reach above-mentioned purpose, and moisture control method of the invention is conceived to
The outlet material temperature of tobacco material after damping, controls the quantity delivered of steam, the outlet material temperature is maintained into target
Temperature.
In detail, the present invention provides a kind of moisture control method, and tobacco material and steam are supplied to a rotating body, former in tobacco
Material carries out damping during passing through a rotating body to tobacco material, and the moisture control method possesses following process：
When supplying steam in left-hand tools body with supply flow rate, detect that the tobacco just discharged from the outlet of rotary body is former
The process of the outlet material temperature of material；
The process for obtaining the first deviation between the target temperature of the tobacco material in exit and outlet material temperature；
Based on the first deviation, the standard flow based on steam controls the main control process of the supply flow rate of steam,
Main control process,
From the size according to the first deviation and it is positive and negative and divide multiple control areas in, selection and the first deviation it is corresponding
Control area,
The supply flow rate of steam is controlled according to the control sequence in selected control area.
According to above-mentioned moisture control method, in the damping of tobacco material, the outlet material temperature of tobacco material is detected, is
Make the outlet material temperature consistent with target temperature, the supply stream for the steam for controlling to supply to a rotating body based on standard flow
Amount.If the outlet material temperature of the tobacco material after damping is adjusted into target temperature in this wise, tobacco material can be made
Moisture easily increase.
Specifically, main control process includes：
Insensitive region, it is chosen when the first deviation is between positive first threshold and negative Second Threshold, will be for
Standard flow is maintained to flow；
The cubic function control area of positive side, it exceedes first threshold and bigger than first threshold positive in the first deviation
It is chosen when within the 3rd threshold value, the modified flow rate calculated according to the cubic function based on first deviation makes supply flow rate
Reduced from standard flow；
The cubic function control area of minus side, it exceedes negative Second Threshold and bigger than Second Threshold in the first deviation
It is chosen when within the 4th negative threshold value, the modified flow rate calculated according to the cubic function based on first deviation makes supply
Flow increases from standard flow.
If the control area of above-mentioned main control process includes the cubic function control area of positive side and minus side, these three
Secondary function control area is effective in the change promptly compensated relative to the moment of outlet material temperature.
It is preferred that main control process also includes：
The linear function control area of positive side, it exceedes positive the 3rd threshold value and bigger than the 3rd threshold value in the first deviation
It is chosen when within the 5th positive threshold value, the modified flow rate calculated according to the linear function based on first deviation makes supply
Flow is reduced from standard flow；
The linear function control area of minus side, it exceedes the 4th negative threshold value and than the 4th threshold value in first deviation
It is chosen when within big the 6th negative threshold value, the modified flow rate calculated according to the linear function based on first deviation makes
Supply flow rate increases from standard flow.
If the control area of main control process also includes the linear function control area of positive side and minus side, these are once
Function control area make supply flow rate according to and the proportional modified flow rate of the first deviation increase and decrease, supply flow rate can not be made drastically
Alternatively, outlet material temperature is made to quickly return to target temperature.
It is further preferred that main control process includes：
The fixed control area domain of positive side, it is chosen when the first deviation exceedes five positive threshold value, supply flow rate is limited
System is in certain lower limit flow；
The fixed control area domain of minus side, it is chosen when the first deviation exceedes negative six threshold value, by supply stream
Amount is limited in certain upper limit flow.
The fixed control area domain of such positive side and minus side prevents the excessive increase and decrease of supply flow rate.
In addition, the moisture control method of the present invention can also possess the sub-control process performed parallel with above-mentioned main control process.
What the sub-control process included periodically being repeated standard flow resets control area, and this resets control area and is based on
The average value of the first deviation in during certain resets standard flow.
The lasting change of such feedback control reduction outlet material temperature brought to the bad of main control process
Influence, makes control of the main control process to outlet material temperature more stable.
It is preferred that the moisture control method of the present invention can also be included in the startup control process performed before main control process.This is opened
Dynamic control supplies steam using the startup flow more than standard flow as supply flow rate to a rotating body.
Such execution for starting control process is reached within the 7th threshold value or target temperature and rotary body in the first deviation
Exit steam temperature between the second deviation reach within the 8th threshold value, or from start control begin to pass through regulation
Startup during when stop.
Control what is performed between process and main control process to cut in addition, the moisture control method of the present invention can also be included in start
Change control process.The switching control process from the size according to the first deviation and it is positive and negative and divide multiple switching control regions
In, selection and the corresponding switching control region of the first deviation are controlled according to the control sequence in selected switching control region
The supply flow rate.
The moisture control method of the invention described above is suitable as the damping of the tobacco leaf of tobacco material.
The effect of invention
The moisture control method of the tobacco material of the present invention, is based only upon between the outlet material temperature of tobacco material and target temperature
The first deviation, it becomes possible to the supply flow rate of steam is controlled, therefore, it is possible to easily adjust the outlet material temperature of tobacco material
Whole is target temperature.As a result, the tobacco material after damping can be made to include sufficient moisture.
Brief description of the drawings
Fig. 1 is the schematic diagram for the damping machine for performing the moisture control method of the present invention.
Fig. 2 is the functional block diagram of the function for the damping controller for representing Fig. 1.
Fig. 3 is to represent to start in control, the curve of the outlet material temperature of tobacco material and the change of outlet steam temperature
Figure.
Fig. 4 is the curve map for representing multiple control areas that switching control is included.
Fig. 5 is the curve map for illustrating the tail end of switching control.
Fig. 6 is the curve map for representing multiple control areas that FF controls are included.
Fig. 7 is the curve map for illustrating to control the FB performed parallel to control with FF.
Fig. 8 be for illustrate calculate be used for FB control target temperature and outlet material temperature between deviation sampling and
The figure of average deviation.
Embodiment
Before being illustrated to the moisture control method of the tobacco material of the present invention, below, 1 pair of execution moisture control method of reference picture
Damping machine briefly illustrate.
Damping machine possesses the hollow rotating body 10 of drum, and the rotary body 10 has the tobacco leaf received as tobacco material
The material outlet 14 of raw material behind the feed(raw material)inlet 12 of (hreinafter referred to as raw material) and discharge damping.Herein, raw material is a variety of
The mixture of tobacco leaf, the mixture is used for the cigarette for manufacturing certain species.
Rotary body 10 can rotate to a direction, be supplied to by feed(raw material)inlet 12 raw material in rotary body 10 with
The rotation of rotary body 10 and be shifted into from feed(raw material)inlet 12 towards material outlet 14 in rotary body 10, during the transfer,
Raw material is fed into the steam in rotary body 10, specifically by water vapour damping.Raw material after damping is from the quilt of material outlet 14
Transport path is discharged to, towards the processing position conveyance (not shown) of back segment in transport path.
In order to supply steam to rotary body 10, damping machine is also equipped with the feed path 16 of steam, and the feed path 16 is at it
A part includes the inner space of rotary body 10.In detail, feed path 16 has the steaming being open respectively in rotary body 10
Vapour entrance 18 and steam (vapor) outlet 20, steam inlet 18 are located at the side of feed(raw material)inlet 12, and steam (vapor) outlet 20 is located at the side of material outlet 14.
Feed path 16 has steam supply source, specifically with the steam inlet that rotary body 10 is extended to from boiler room
18 upstream portion and the downstream part extended from the steam (vapor) outlet 20 of rotary body 10.Distinguish in the upstream portion of feed path 16
Diaphragm type steam flow regulator 22 and steam-flow meter 24 are configured with, the downstream part of feed path 16 is big in its end direction
Gas is opened.
Steam flow regulator 22 and steam-flow meter 24 are electrically connected with arithmetic unit 26 respectively.In the arithmetic unit 26 respectively
It is fed with the desired value Qo of steam flow that should be supplied into rotary body 10 and the actual steam determined using steam-flow meter 24
Flow Qa, arithmetic unit 26 controls the action of steam flow regulator 22 to make actual steam flow Qa consistent with desired value Qo.
Temperature sensor 28 is configured with material outlet 14, the temperature sensor 28 determines the raw material discharged from rotary body 10
Outlet material temperature Ta.On the other hand, temperature sensor 30 is configured with the downstream part of feed path 16, the TEMP
Device 30 determines the delivery temperature Ts for the steam discharged from rotary body 10.
Outlet material temperature Ta and delivery temperature Ts are fed into arithmetic unit 32 as electric signal, and arithmetic unit 32 is based on out
Gate material temperature Ta, delivery temperature Ts and various setting values, calculate the desired value Qo of steam flow, desired value Qo are supplied to
Arithmetic unit 26.In addition, setting value includes 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, performs and starts control process, switching control process and tandem
Process is controlled, the details to these control processes is illustrated below.
Start control process
When above-mentioned damping machine is operated, i.e. when raw material is fed into rotary body 10, arithmetic unit 32 is by the mesh of steam flow
Scale value Qo (supply flow rate of the steam supplied to rotary body 10) is set as starting flow Qst (kg/h), by startup flow Qst
It is supplied to arithmetic unit 22.Herein, it is the value determined based on above-mentioned setting value to start flow Qst.Thus, control is being started
In the execution of process processed, actual steam flow Qa is adjusted to start flow Qst.
Any one of above-mentioned startup control process in three below jump condition 1 to 3 terminates when setting up.
Jump condition 1：Deviation delta t between the target temperature To and delivery temperature Ts of raw material at material outlet 14 ' (=
To-Ts) within threshold value Th_a.
Jump condition 2：Deviation delta t (=To-Ta) between the target temperature To and outlet material temperature Ta of raw material is in threshold
Within value Th_b.
Jump condition 3：Elapsed time since startup control process reaches T1.
Above-mentioned target temperature To is the value set according to the kind of raw material, moreover, threshold value Th_a, Th_b is respectively
Such as 2 DEG C, 5 DEG C.
From the figure 3, it may be seen that generally, delivery temperature Ts is in the tendency that quickly rises than outlet material temperature Ta, therefore
On the basis of above-mentioned jump condition 2, by additional jump condition 1, startup can be made to control process promptly to stop.Also, turn
Shifting condition 3 is undesirably elongated during preventing to start control process.
In above-mentioned jump condition 1 to 3 any one establishment when, arithmetic unit 32 make startup control process terminate, then, hold
The following switching control process of row.
Switching control process
Herein, first, arithmetic unit 32 makes the desired value Qo of steam flow change into standard flow from flow Qst is started
Qb.Standard flow Qb is fewer than starting flow Qst, identical with starting flow Qst, is one determined based on above-mentioned setting value
Value.
Arithmetic unit 32 includes being used for the control diagram of the switching control shown in Fig. 4.The control diagram is according to above-mentioned deviation
Δ t size and multiple control areas that are positive and negative and dividing, in detail, with insensitive region R1, in the insensitive region
Positive side and cubic function control area R2, R3 of minus side that R1 both sides are defined respectively, in these cubic function control areas R2,
Positive side and fixed control area domain R4, R5 of minus side that R3 outside is defined respectively.
When deviation delta t is meeting following formula, insensitive region R1 is selected.
- Th_d≤Δ t≤Th_c
Herein, as can be seen from Figure 4, threshold value Th_c ,-Th_d are less than 1 DEG C of small positive or negative value.In addition, threshold value
Th_c, |-Th_d | can be with equal.
When selecting insensitive region R1, deviation delta t is small, therefore arithmetic unit 32 maintains the desired value Qo of steam flow
Standard flow Qb.Thus, in insensitive region R1, effective supply flow Qa is adjusted to standard flow Qb.
When deviation delta t meets following formula, the cubic function control area R2 of positive side is selected.
Th_c ＜ Δs t≤Th_e
Herein, threshold value Th_e is bigger than threshold value Th_c on the occasion of (such as 4 DEG C).
When selecting cubic function control area R2, cubic function F1 [(a1 × Δ t of the arithmetic unit 32 based on deviation delta t
)3] calculate positive modified flow rate C1.Herein, a1 is coefficient.Moreover, arithmetic unit 32 changes into the desired value Qo of steam flow
Make the supply flow rate Qc1 (=Qb-C1) that modified flow rate C1 reflects on standard flow Qb.Thus, in cubic function control area
R2, effective supply flow Qa is adjusted to supply flow rate Qc1.
Herein, modified flow rate C1 is that the cubic function F1 based on deviation delta t is calculated, therefore with deviation delta t
Increase, increases along cubic curve.Thus, if deviation delta t is small, supply flow rate Qc1 is hardly reduced from standard flow Qb,
If deviation delta t is increasing, supply flow rate Qc1 is sharp reduced compared with standard flow Qb.As a result, raw material goes out
The size of gate material temperature Ta and deviation delta t accordingly, is effectively reduced towards target temperature To.
On the other hand, when deviation delta t meets following formula, the cubic function control area R3 of minus side is selected.
- Th_f≤Δ t ＜-Th_d
Herein, threshold value-Th_f is the negative value (such as -3.2 DEG C or so) bigger than threshold value-Th_d.
When selecting cubic function control area R3, cubic function F2 [(a2 × Δ t of the arithmetic unit 32 based on deviation delta t
)3] calculate modified flow rate C2.Herein, a2 is coefficient.
In this case, arithmetic unit 32, which changes into the desired value Qo of steam flow, makes modified flow rate C2 in standard flow
The supply flow rate Qc2 (=Qb-C2) reflected on Qb.Herein, deviation delta t is negative value, therefore three based on deviation delta t letters
The modified flow rate C2 that number F2 is calculated also is negative value.Thus, in cubic function control area R3, supply flow rate Qc2, i.e. actual to steam
The size of steam flow amount Qa and deviation delta t accordingly effectively increases, as a result, the outlet material temperature Ta of raw material is towards target
Temperature To promptly rises.
Not only make the outlet material temperature Ta of raw material effective towards target temperature To using above-mentioned cubic function in this wise
Ground change be it is beneficial, also can be in the calculating about modified flow rate C1, C2, the positive or negative processing of deviation delta t is easy.
In addition, when deviation delta t meets following formula, selecting fixed control area domain R4.
Th_e ＜ Δs t
In this case, arithmetic unit 32 is based on following formula, calculates the supply flow rate of the desired value Qo as steam flow
Qc3。
Qc3=Qb-C3 (=F1 [(a1 × Th_e)3])
Thus, in fixed control area domain R4, actual steam flow Qa is adjusted to supply flow rate Qc3.
Herein, modified flow rate C3 be on the occasion of, therefore supply flow rate Qc3 is restricted to certain minimum value, in the state,
Outlet material temperature Ta is reduced towards target temperature To.
On the other hand, when deviation delta t meets following formula, the fixed control area domain R5 of positive side is selected.
Δ t ＜-Th_f
In this case, arithmetic unit 32 is 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])
Herein, modified flow rate C4 is negative value, therefore supply flow rate Qc4 is restricted to certain maximum.Thus, solid
Control area R5 is determined, actual steam flow Qa is adjusted to supply flow rate Qc4, as a result, the outlet material temperature Ta of raw material
Promptly rise towards target temperature To.
Any one of above-mentioned switching control in following jump condition 4,5 terminates when setting up.
Jump condition 4：Deviation delta t is within threshold value Th_g (reference picture 5).
Jump condition 5：Elapsed time since switching control reaches T2.
Herein, 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 terminates switching control process, performs following serials control work
Sequence.
Serials control process
The serials control process includes controlling process as the feedforward (FF) of main control process and is used as sub-control process
(FB) control process is fed back, below, controls FF process and FB controls process to illustrate.
FF controls process
Arithmetic unit 32 also includes being used for the control diagram of the FF control processes shown in Fig. 6, and the control diagram is according to deviation delta t
Size and it is positive and negative be divided into multiple control areas, in detail, have：Insensitive region R6；In the insensitive region R6
The positive side that respectively provides of both sides and minus side cubic function control area R7, R8；In these cubic function control areas R7, R8
Positive side and linear function control area R9, R10 of minus side that outside is respectively provided；And, in these linear function control areas
The positive side and fixed control area domain R11, R12 of minus side respectively provided on the outside of R9, R10.
When deviation delta t meets following formula, insensitive region R6 is selected.
- Th_i≤Δ t≤Th_h
Herein, threshold value Th_h ,-Th_i are less than 1 DEG C of small positive or negative value as shown in Figure 6.In addition, threshold value Th_
H, |-Th_i | can be with equal.
When selecting insensitive region R6, deviation delta t is small, therefore arithmetic unit 32 maintains the desired value Qo of steam flow
Standard flow Qb.That is, in insensitive region R6, actual steam flow Qa is adjusted to standard flow Qb.
When deviation delta t meets following formula, the cubic function control area R7 of positive side is selected.
Th_h ＜ Δs t≤Th_j
Herein, threshold value Th_j is bigger than threshold value Th_h on the occasion of (such as 3 DEG C).
When selecting cubic function control area R7, cubic function F3 [(a1 × Δ t of the arithmetic unit 32 based on deviation delta t
)3] positive modified flow rate C5 is calculated, the desired value Qo of steam flow is changed into and reflects modified flow rate C5 on standard flow Qb
Supply flow rate Qc5 (=Qb-C5).Thus, in cubic function control area R7, actual steam flow Qa is adjusted to supply
Flow Qc5.
On the other hand, when deviation delta t meets following formula, the cubic function control area R8 of minus side is selected.
- Th_k≤Δ t ＜-Th_i
Herein, threshold value-Th_k is the negative value (such as -2.5 DEG C or so) bigger than threshold value-Th_i.
When selecting cubic function control area R8, cubic function F4 [(a2 × Δ t) of the arithmetic unit 32 based on deviation delta t
3] negative modified flow rate C6 is calculated, will reflect that modified flow rate C6 supply flow rate Qc6 (=Qb-C6) is set on standard flow Qb
It is set to the desired value Qo of steam flow.Thus, in cubic function control area R8, actual steam flow Qa is adjusted to supply stream
Measure Qc6.
Herein, from the explanation of above-mentioned switching control, it is known that modified flow rate C5, C6 is be based respectively on deviation delta t three times
Function F3, F4 are calculated, therefore supply flow rate Qc5, Qc6 are compared with standard flow Qb, are accordingly subtracted with the size of deviation delta t
Less or increase, as a result, the outlet material temperature Ta of raw material effectively changes towards target temperature To.
Herein, it is clear that for the calculating of modified flow rate C5, C6, the positive or negative processing of deviation delta t becomes easy.
When deviation delta t meets following formula, the linear function control area R9 of positive side is selected.
Th_j ＜ Δs t≤Th_l
Th_l is the value (such as 5.5 DEG C) bigger than Th_j.
When selecting linear function control area R9, linear function F5 (b1 × Δ t) meter of the arithmetic unit 32 based on deviation delta t
Positive modified flow rate C7.B1 is coefficient.Moreover, the supply that arithmetic unit 32 will be such that modified flow rate C7 is reflected on standard flow Qb
Flow Qc7 (=Qb-C7) is set as the desired value Qo of steam flow.Thus, it is actual to steam in the R9 of linear function control area
Steam flow amount Qa is adjusted to supply flow rate Qc7.
On the other hand, when deviation delta t meets following formula, the linear function control area R10 of minus side is selected.
- Th_m≤Δ t ＜-Th_k
- Th_m is the negative value (such as -4.3 DEG C) bigger than-Th_k.
When selecting linear function control area R10, linear function F6 (b2 × Δ t) of the arithmetic unit 32 based on deviation delta t
Calculate negative modified flow rate C8.B2 is coefficient.Then, the confession that arithmetic unit 32 will be such that modified flow rate C8 reflects on standard flow Qb
It is set as the desired value Qo of steam flow to flow Qc8 (=Qb-C8).Thus, it is actual to steam in linear function control area R10
Steam flow amount Qa is adjusted to supply flow rate Qc8.
Here modified flow rate C7, C8 is that linear function F5, F6 based on deviation delta t are calculated respectively, thus as with
The proportional value of the size of deviation delta t.Therefore, supply flow rate Qc7, Qc8 and deviation delta t are accordingly decreased or increased.Its result
It is that the outlet material temperature Ta of raw material promptly changes towards target temperature To.
In addition, when deviation delta t meets following formula, selecting the fixed control area domain R11 of positive side.
Th_l<Δt
In this case, arithmetic unit 32 is based on following formula and calculates supply flow rate Qc9, and supply flow rate Qc9 is set as to steam
The desired value Qo of steam flow amount.
Qc9=Qb-C9 (=F5 (b1 × Th_l))
Herein, modified flow rate C9 is on the occasion of therefore supply flow rate Qc9 is restricted to certain minimum value, and raw material goes out
Gate material temperature Ta is reduced towards target temperature To.
On the other hand, when deviation delta t meets following formula, the fixed control area domain R12 of minus side is selected.
Δt<- Th_m
In this case, arithmetic unit 32 is based on following formula, calculates supply flow rate Qc10, supply flow rate Qc10 is set as
The desired value Qo of steam flow.
Qc10=Qb-C10 (=F6 (b2 ×-Th_m))
Herein, modified flow rate C10 is negative value, therefore supply flow rate Qc10 is restricted to certain maximum, raw material
Outlet material temperature Ta rises towards target temperature To.
Above-mentioned FF controls process performs raw material by making the outlet material temperature Ta of raw material consistent with target temperature To
Damping, therefore, it is possible to easily pay necessary moisture to the raw material after damping.
Also, above-mentioned cubic function control area R7, R8 and linear function control area R9, R10 combination, promptly disappear
Except the change of outlet material temperature Ta moment, the outlet material temperature Ta of raw material is set to be stably maintained at target temperature To.
In addition, control the control area in process to include fixed control area domain R11, R12 of positive side and minus side in FF, because
Even if this deviation delta t is big, the supply flow rate of the steam supplied to rotary body 10 increases with only spending.
Even if in addition, the initial moisture content or quantity delivered that are supplied to the raw material of the feed(raw material)inlet 12 of rotary body 10 become
Change, the execution that the change does not also control process to FF has any impact, and the outlet material temperature Ta of raw material is adjusted to target
Temperature To.
In addition, above-mentioned FF controls process can include：From cubic function control area R7 to linear function control area R9
Transfer when, from cubic function control area R8 to during linear function control area R10 transfer, defined transfer it is standby when
Between.
FB controls process
As shown in fig. 7, FB controls process to be performed parallel with above-mentioned FF controls process.
In detail, the beginning to pass through after defined stand-by time T3 from above-mentioned serials control process of arithmetic unit 32, starts
FB controls process.
After the beginning that FB controls process, the T4 during defined computing of arithmetic unit 32 repeats inclined within certain cycle
Poor Δ t sampling, calculates the average deviation Δ t_av of the deviation delta t during computing in T4.
Herein, during computing in T4, it is assumed that deviation delta t changes as shown in Fig. 8 (a), (b), (c) respectively.
In the case of Fig. 8 (a), average deviation Δ t_av is 0, but in the case of Fig. 8 (b), (c), average deviation Δ t_av has respectively
There are+d ,-d value.
When obtaining average deviation Δ t_av by this way, arithmetic unit 32 is based on average deviation Δ t_av, calculates relative
In standard flow Qb positive or negative modified flow rate C11, standard flow Qb is reset to using modified flow rate C11 new
Standard flow Qb '.
Specifically, standard flow Qb ' can be obtained based on following substitution formula.
Qb ' ← Qb-C11
Such standard flow Qb ' (resets control area) during terminating to FB next time to perform from T4 during computing
It is effective at the time of T5 starts, is used in above-mentioned FF control processes.Then, the T4 during above-mentioned computing is performed repeatedly
T5 standard flow Qb's ' resets during modified flow rate C11 calculating and FB execution.
As shown in Figure 7, above-mentioned FB controls process according to the outlet material temperature Ta of raw material lasting minor variations, by base
Quasi- flow Qb is set as standard flow Qb ' again.Thus, FF controls process by using standard flow Qb ', can be by raw material
Outlet material temperature Ta precision is higher and is stably maintained at target temperature To.That is, FB controls process and FF to control the group of process
Close, i.e. serials control process is good at the damping of the raw material for the outlet material temperature Ta for being conceived to raw material.
The invention is not restricted to the moisture control method of an above-mentioned embodiment, various changes can be implemented.
For example, in the explanation that above-mentioned startup controls process, switching control process and serials control process, illustrating various
Temperature, but these temperature are only an example, can be changed.
Also, in the damping of raw material, in the case that the kind for the raw material that left-hand tools body 10 is supplied changes, that is,
Say, in the case where target temperature To changes, as shown in dashed line in figure 2, moisture control method of the invention is from switching control process
Start.
In addition, the moisture control method raw material of the present invention is not limited to tobacco leaf, various raw materials can be applied to.
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：Fixed control area domain, T4：During computing, T5：During FB is performed.
Claims (8)
1. a kind of moisture control method of tobacco material, it is characterised in that
Tobacco material and steam are supplied to a rotating body, to described during the tobacco material is by a rotating body
Tobacco material carries out damping,
Possesses following process：
When supplying the steam to a rotating body with supply flow rate, detect just to have discharged from the outlet of the rotary body
The tobacco material outlet material temperature process；
The process for obtaining the first deviation between the target temperature of the tobacco material in the exit and the outlet material temperature；
Based on first deviation, the standard flow based on steam controls the main control process of the supply flow rate；
The main control process,
From the size according to first deviation and it is positive and negative and divide multiple control areas in, selection and first deviation pair
The control area answered,
The supply flow rate of the steam is controlled according to the control sequence in selected control area,
The control area includes：
Insensitive region, it is chosen when first deviation is between positive first threshold and negative Second Threshold, institute
State supply flow rate and maintain the standard flow；
The cubic function control area of positive side, it exceedes the first threshold and than the first threshold in first deviation
It is chosen when within big the 3rd positive threshold value, the modified flow rate calculated according to the cubic function based on first deviation makes
The supply flow rate is reduced from the standard flow；
The cubic function control area of minus side, it exceedes the negative Second Threshold and than described second in first deviation
It is chosen when within the 4th negative threshold value of threshold value greatly, the amendment stream calculated according to the cubic function based on first deviation
Amount, makes the supply flow rate increase from the standard flow.
2. the moisture control method of tobacco material according to claim 1, it is characterised in that
The control area also includes：
The linear function control area of positive side, it exceedes the 3rd positive threshold value and than the described 3rd in first deviation
It is chosen when within big the 5th positive threshold value of threshold value, the amendment stream calculated according to the linear function based on first deviation
Amount, makes the supply flow rate be reduced from the standard flow；
The linear function control area of minus side, it exceedes the 4th negative threshold value and than the described 4th in first deviation
It is chosen when within the 6th negative threshold value of threshold value greatly, the amendment stream calculated according to the linear function based on first deviation
Amount, makes supply flow rate increase from the standard flow.
3. the moisture control method of tobacco material according to claim 2, it is characterised in that
The control area also includes：
The fixed control area domain of positive side, it is chosen when first deviation exceedes positive five threshold value, is supplied described
To flow restriction in certain lower limit flow；
The fixed control area domain of minus side, it is chosen when first deviation exceedes negative six threshold value, is supplied described
To flow restriction in certain upper limit flow.
4. the moisture control method of tobacco material according to claim 1, it is characterised in that
The startup control process performed before the main control process is additionally included in,
The control process that starts is using the startup flow more than the standard flow as the supply flow rate to the rotation
Steam is supplied in vivo.
5. the moisture control method of tobacco material according to claim 4, it is characterised in that
It is described start control process execution first deviation reach within the 7th threshold value or the target temperature with it is described
The second deviation between the temperature of the steam in the exit of rotary body reaches within the 8th threshold value or starts control from described
Begin to pass through as defined in start during when stop.
6. the moisture control method of tobacco material according to claim 4, it is characterised in that
The switching control process for starting and being performed between control process and the main control process is additionally included in,
The switching control process from the size according to first deviation and it is positive and negative and divide multiple switching control regions in,
Selection and the corresponding switching control region of first deviation,
The supply flow rate is controlled according to the control sequence in selected switching control region.
7. the moisture control method of tobacco material according to claim 1, it is characterised in that
The tobacco material is tobacco leaf.
8. the moisture control method of tobacco material according to claim 1, it is characterised in that
The sub-control process performed parallel with the main control process is also equipped with,
The sub-control process include periodically repeatedly standard flow is reset reset control area,
The average value of the control area based on first deviation in during certain that resets resets the base
Quasi- flow.
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 |
|---|---|
| CN104168782A CN104168782A (en) | 2014-11-26 |
| CN104168782B true CN104168782B (en) | 2017-10-13 |
Family
ID=49160453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4709708A (en) * | 1983-07-21 | 1987-12-01 | The Japan Tobacco & Salt Public Corporation | Control system for humidity controller of tobacco leaves |
| US6988501B2 (en) * | 2001-07-02 | 2006-01-24 | Garbuio S.P.A. | Tobacco processing machine |
| CN1899136A (en) * | 2006-07-19 | 2007-01-24 | 将军烟草集团有限公司 | Two stage control method for wetting leaf moisture regain temperature |
| CN201094273Y (en) * | 2007-10-22 | 2008-08-06 | 厦门卷烟厂 | Smoked sheet loosening moisture-regaining device |
| CN101380136A (en) * | 2008-10-21 | 2009-03-11 | 龙岩烟草工业有限责任公司 | Cigarette machining, loosening, steam conditioner and hot blast control method thereof |
| CN101502337A (en) * | 2009-02-26 | 2009-08-12 | 孟科峰 | Method for controlling model building in leaf moisture-regaining process of tobacco shred production |
| CN201336924Y (en) * | 2009-02-13 | 2009-11-04 | 湖南中烟工业有限责任公司 | Accuracy control device for moist heat air in tobacco flake loosening and conditioning cylinder |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2864381A (en) * | 1956-02-01 | 1958-12-16 | Imp Tobacco Co Ltd | Method for conditioning tobacco |
| DE2240682C2 (en) * | 1972-08-18 | 1983-09-01 | Hauni-Werke Körber & Co KG, 2050 Hamburg | Method and device for moistening tobacco |
| US4572218A (en) * | 1983-10-27 | 1986-02-25 | Proctor & Schwartz, Inc. | Remoistening of tobacco |
| JPS6185182A (en) * | 1984-10-04 | 1986-04-30 | 日本たばこ産業株式会社 | Stock material preparing method and apparatus for removing tobacco bad habitant component |
-
2012
- 2012-03-15 EP EP12871593.5A patent/EP2798965B1/en active Active
- 2012-03-15 WO PCT/JP2012/056716 patent/WO2013136487A1/en active Application Filing
- 2012-03-15 JP JP2014504570A patent/JP5709289B2/en active Active
- 2012-03-15 CN CN201280071421.2A patent/CN104168782B/en active Active
- 2012-03-15 PL PL12871593T patent/PL2798965T3/en unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4709708A (en) * | 1983-07-21 | 1987-12-01 | The Japan Tobacco & Salt Public Corporation | Control system for humidity controller of tobacco leaves |
| US6988501B2 (en) * | 2001-07-02 | 2006-01-24 | Garbuio S.P.A. | Tobacco processing machine |
| CN1899136A (en) * | 2006-07-19 | 2007-01-24 | 将军烟草集团有限公司 | Two stage control method for wetting leaf moisture regain temperature |
| CN201094273Y (en) * | 2007-10-22 | 2008-08-06 | 厦门卷烟厂 | Smoked sheet loosening moisture-regaining device |
| CN101380136A (en) * | 2008-10-21 | 2009-03-11 | 龙岩烟草工业有限责任公司 | Cigarette machining, loosening, steam conditioner and hot blast control method thereof |
| CN201336924Y (en) * | 2009-02-13 | 2009-11-04 | 湖南中烟工业有限责任公司 | Accuracy control device for moist heat air in tobacco flake loosening and conditioning cylinder |
| CN101502337A (en) * | 2009-02-26 | 2009-08-12 | 孟科峰 | Method for controlling model building in leaf moisture-regaining process of tobacco shred production |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013136487A1 (en) | 2013-09-19 |
| EP2798965A4 (en) | 2015-11-11 |
| JP5709289B2 (en) | 2015-04-30 |
| PL2798965T3 (en) | 2019-12-31 |
| EP2798965A1 (en) | 2014-11-05 |
| JPWO2013136487A1 (en) | 2015-08-03 |
| CN104168782A (en) | 2014-11-26 |
| EP2798965B1 (en) | 2019-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103082390B (en) | The control method that a kind of drum-type cut-tobacco drier three grades regulates | |
| CN103202528B (en) | Cut lamina drying control method and cut lamina drying system based on feedforward and feedback of HT moisture compensation | |
| CN104168782B (en) | The moisture control method of tobacco material | |
| EP2097148B1 (en) | A method of controlling a spray dryer apparatus by regulating an inlet air flow rate, and a spray dryer apparatus | |
| CN104172457B (en) | Tobacco leaf silk drying machine control method | |
| JP2013502911A (en) | Tobacco processing apparatus and method | |
| CN107411164B (en) | Three-stage water adding device for rear chamber of loosening and dampening roller and water adding control method | |
| CN105795502A (en) | Redrying feeding and flavoring material moisture content and temperature controlling method | |
| CN103383541A (en) | Moisture regaining feed-forward control method based on supplied material water content differences | |
| JP5962476B2 (en) | Grinding plant temperature control device, grinding plant temperature control method, and computer program | |
| CN104432456A (en) | High-yield cut tobacco drying method | |
| JP2009165641A (en) | Fryer | |
| TWI408318B (en) | Water heater water temperature control method and device | |
| CN106094459B (en) | Sheet moistening device and humidifying controlling method | |
| JP5786845B2 (en) | Coal humidity control apparatus and coal humidity control method | |
| JP5846831B2 (en) | Humidified gas supply device and method for fuel cell | |
| JP2005087214A (en) | Drying plant for tobacco and method for drying tobacco | |
| CN108669616B (en) | Moisture balance-based control method for cut tobacco moisture content of drum-type cut tobacco dryer | |
| CN105177251A (en) | Heat treatment furnace | |
| RU2575817C1 (en) | Method of conditioning humidity of tobacco material | |
| JP6528500B2 (en) | Boiler system | |
| JP6209980B2 (en) | Boiler and boiler system | |
| CN114126422B (en) | Method and apparatus for casting sheets of alkaloid containing material | |
| JP5264592B2 (en) | Drying heater | |
| CN107048458A (en) | Piece cigarette method for controlling water content based on predictive PI control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |