CN105132668A - Method for controlling pressure of silicon steel continuous annealing furnace separation section - Google Patents
Method for controlling pressure of silicon steel continuous annealing furnace separation section Download PDFInfo
- Publication number
- CN105132668A CN105132668A CN201510683736.8A CN201510683736A CN105132668A CN 105132668 A CN105132668 A CN 105132668A CN 201510683736 A CN201510683736 A CN 201510683736A CN 105132668 A CN105132668 A CN 105132668A
- Authority
- CN
- China
- Prior art keywords
- distance piece
- pressure
- furnace
- diffusion valve
- normal state
- 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.)
- Granted
Links
Landscapes
- Furnace Details (AREA)
- Control Of Heat Treatment Processes (AREA)
Abstract
The invention provides a method for controlling the pressure of a silicon steel continuous annealing furnace separation section. The method comprises the steps that the pressure P01 of a first furnace area, the pressure P02 of a second furnace area and the gas pressure P12 of a first furnace separation section are measured by a pressure transmitter and transmitted to an PLC control system; the PLC control system executes a PID parameter fuzzy-self-tuning program, PID parameters are obtained through calculation, then a PID controller outputs MV, and the MV is transmitted to a correlation computing controller; the PLC control system obtains a correction parameter J12 of a relief valve of the first separation section, finally, the output opening MV12=J12*MV of the relief valve of the first separation section is calculated through the correlation computing controller, and the MV12 calculation result is given to the relief valve of the first separation section to adjust the gas pressure of the separation section. On the condition of ensuring the air flow separation effect and the micro-positive pressure state of the separation section, the nitrogen protecting program starting frequency is reduced so as to reduce interference on pressure and gas in a furnace.
Description
Technical field
The invention belongs to the control method field for the obstruct of stove section atmosphere in silicon steel thermal treatment process, be specifically related to the control method of furnace pressure in a kind of silicon steel continuous annealing furnace distance piece.
Background technology
According to silicon steel thermal treatment process, dry gas atmosphere and wet atmosphere stove section, the nitrogen and hydrogen mixture atmosphere stove section of various proportioning, heating zone and cooling section all need to carry out gas isolating, gas isolating, by adjusting two stove sections and the intersegmental furnace pressure difference of intermediate isolating realizes, therefore needs to arrange the tightness system for controling of the pressure of the oven.The device intercepted for stove section atmosphere on current silicon steel line forms by isolating baffle plate, bleeder and diffusing variable valve, but control method is single, mainly by distance piece furnace pressure with diffuse variable valve and form closed loop and regulate.But there are the following problems for this control method: one, single closed loop adjustment, be difficult under any circumstance to guarantee that good furnace pressure is poor, be also just difficult to the good isolation realizing atmosphere; Two, this control method will inevitably cause periphery stove section furnace pressure to fluctuate while self distance piece furnace pressure of adjustment, and when annealing furnace needs to control multiple stove section atmosphere configuration isolation section, this distance piece separately independently control mode can cause the fluctuation of larger stove section furnace pressure unavoidably, and then have impact on gradient and the stability of body of heater furnace pressure.
Summary of the invention
The technical problem to be solved in the present invention is; for the problem on current silicon steel continuous annealing furnace distance piece controling of the pressure of the oven; a kind of method for silicon steel continuous annealing furnace distance piece controling of the pressure of the oven is provided; when guaranteeing distance piece air-flow buffer action and distance piece slight positive pressure state, reduce the frequency of startup nitrogen protection program in order to reduce the interference to furnace pressure and atmosphere.
The present invention for solving the problems of the technologies described above adopted technical scheme is:
For a method for silicon steel continuous annealing furnace distance piece controling of the pressure of the oven, this distance piece isolates baffle plate by 1#, 2# isolates baffle plate, bleeder, diffuse variable valve and diffuse isolation baffle plate forms, and control method comprises the steps:
S1, pressure transmitter measurement 1# stove district furnace pressure P01,2# stove district furnace pressure P02 and 1# distance piece furnace gas furnace pressure P12, and each pressure data P01, P02 and P12 are sent to PLC control system;
S2, PLC control system choose that minimum value as Pmin from 1# stove district furnace pressure P01,2# stove district furnace pressure P02 obtained; Calculate Pmin and 1# distance piece furnace gas furnace pressure P12 difference, as Pm;
The rate of change that S3, the sweep time considering PLC control system and stove district furnace pressure fluctuate, the time cycle t of setting Pm, calculate time variations Δ Pm=Pm (t+1) – Pm (t), and time rate of change Epm=Δ Pm (t+1) – Δ Pm (t) of Pm; Set manually the target set point Spm of PID controller, and Pm is the displayed value of PID controller, Δ Pm and Epm is carried out Fuzzy processing by PLC control system, and performs pid parameter Fuzzy self-turning program, calculates pid parameter;
S4, the pid parameter calculated by step S3 substitute into PID controller, and PID controller sends its output valve MV to association arithmetic and control unit after calculating;
S5, the difference of calculating 1# distance piece furnace gas furnace pressure P12 and 1# alarm setting value SV1 and the accounting Δ P1 of distance piece furnace gas furnace pressure maximum range P12max, namely
1# distance piece diffusion valve normal state COEFFICIENT K 12 and accounting Δ P1 meet the relation of following formula class normal distyribution function:
K12＝exp[-π(ΔP1-μ)
2](1)
In formula, μ is expected value, by manually rule of thumb setting, and μ ∈ (0,1), Δ P1 ∈ [0, μ];
Accounting Δ P1 is substituted in formula (1), tries to achieve 1# distance piece diffusion valve normal state COEFFICIENT K 12;
S6, by step S5 in like manner, try to achieve 2# distance piece diffusion valve normal state COEFFICIENT K 23, specific as follows:
Calculate the difference of 2# distance piece furnace gas furnace pressure P23 and 2# alarm setting value SV2 and the accounting Δ P2 of distance piece furnace gas furnace pressure maximum range P23max, namely
2# distance piece diffusion valve normal state COEFFICIENT K 23 and accounting Δ P2 meet the relation of following formula class normal distyribution function:
K23＝exp[-π(ΔP2-μ)
2](2)
In formula, μ is expected value, by manually rule of thumb setting, and μ ∈ (0,1), Δ P2 ∈ [0, μ];
Accounting Δ P2 is substituted in formula (2), tries to achieve 2# distance piece diffusion valve normal state COEFFICIENT K 23;
S7, K12, K23 of obtaining according to step S5 ~ S6, setting 1# distance piece diffusion valve correction factor is J12, be subject to 1# distance piece normal state COEFFICIENT K 12 according to 1# distance piece diffusion valve correction factor J12 size and 2# distance piece normal state COEFFICIENT K 23 affects, calculate 1# distance piece diffusion valve correction factor J12=K12 × K23;
S8, the fuzzy controller obtained according to step S4 export the 1# distance piece diffusion valve correction factor J12 that MV and step S7 obtains, calculate 1# distance piece diffusion valve by association arithmetic and control unit and export aperture MV12=J12 × MV, and MV12 calculation result is assigned to 1# distance piece diffusion valve in order to regulate distance piece furnace gas furnace pressure.
By such scheme, the impact of adjacent both sides distance piece normal state coefficient is considered when calculating other distance piece diffusion valve correction factors, with step S5 ~ S7 in like manner, 2# diffusion valve correction factor is the product of 1# distance piece normal state COEFFICIENT K 12,2# distance piece normal state COEFFICIENT K 23 and 3# distance piece normal state COEFFICIENT K 34, and other diffusion valve correction factors by that analogy.
Beneficial effect of the present invention:
1, utilize Fuzzy PID Control Technique to improve response speed and the control accuracy of the closed-loop control of distance piece furnace gas furnace pressure difference, substantially increase the staged isolation effect of distance piece to furnace atmosphere of silicon steel continuous annealing furnace;
2, class normal distyribution function and the foundation to adjacent distance piece correction factor cognation is utilized; the furnace pressure of distance piece and adjacent distance piece is fluctuated situation in order to revise diffusion valve aperture; reduce the frequency starting nitrogen protection program; thus reduce probability furnace pressure and atmosphere being produced to interference, and then improve production efficiency and the quality of silicon steel continuous annealing furnace.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention distance piece;
Fig. 2 is the control principle drawing of embodiment of the present invention distance piece group;
Fig. 3 is the control flow chart of embodiment of the present invention distance piece group;
In figure, 1-1# isolates baffle plate, and 2-2# isolates baffle plate, 3-bleeder, and 4-diffuses variable valve, and 5-diffuses isolation baffle plate, 6-1# stove district furnace gas, 7-2# stove district furnace gas, 8-distance piece furnace gas, 9-1# stove district pressure port, 10-2# stove district pressure port, 11-distance piece pressure port.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be understood that, this embodiment not limits scope of the present invention, the various conversion that those skilled in the art make technical scheme of the present invention and improvement, all should fall in protection domain that the present invention determines.
As shown in Figure 1, for 1# distance piece region, distance piece involved in the present invention isolates baffle plate 1 by 1#, 2# isolates baffle plate 2, bleeder 3, diffuse variable valve 4 and diffuse isolation baffle plate 5 and form, 1# isolates baffle plate 1 and 2# isolates baffle plate 2 from obstruct Chu1#Lu district, physical construction aspect furnace gas 6, 2# stove district furnace gas 7 and distance piece furnace gas 8 three kinds of atmosphere, in order to isolate furnace gas 6 Ji2#Lu district of 1# stove district furnace gas 7, furnace gas 6 Ji2#Lu district of 1# stove district furnace gas 7 is avoided to go here and there mutually, but list can not reach isolation effect completely from mechanical aspects, need to supplement from air-flow aspect, therefore distance piece adopts and diffuses mode, under any circumstance distance piece furnace gas 8 furnace pressure is made all to be less than furnace pressure Ji2#Lu district of 1# stove district furnace pressure, such 1# isolates baffle plate 1 and 2# and isolates baffle plate 2 and reveal the gas of coming and all can flow to bleeder 3 from distance piece and diffuse away, to realize the intact isolation of atmosphere.Produce danger for preventing extraneous air etc. from sealing in stove, distance piece needs to guarantee slight positive pressure state simultaneously; For preventing distance piece furnace gas 8 furnace pressure too low, nitrogen protection program being set, passing into nitrogen to guarantee the barotropic state of distance piece by opening nitrogen trip valve to distance piece.
Shown in composition graphs 2, after pressure unit PT-F01, PT-F02 and PT-F12 obtain 1#, 2# stove district and distance piece furnace pressure by 1#, 2# stove district and distance piece pressure port, give PLC control system calculation process and finally calculate the output aperture of diffusing variable valve PCV-F12, variable valve is diffused for controlling, and then stable 1#, 2# stove district and distance piece furnace pressure.
Seal in stove to prevent extraneous air etc. and produce danger; distance piece needs to guarantee slight positive pressure state; so distance piece furnace gas furnace pressure P12 can not be too low; if too low; PLC system can start nitrogen protection program, opens nitrogen trip valve SOV-F12 and passes into nitrogen to guarantee distance piece furnace gas furnace pressure to distance piece.
But that protects nitrogen passes into the confusion that can cause furnace pressure and atmosphere in certain hour; can have a strong impact on normal production generation; so the control method main purpose that the present invention gives is exactly when guaranteeing distance piece slight positive pressure state; avoid starting nitrogen protection program, to maintain normal furnace pressure and furnace atmosphere.
As shown in FIG. 1 to 3, for 1# distance piece furnace gas controling of the pressure of the oven, the method for silicon steel continuous annealing furnace distance piece controling of the pressure of the oven of the present invention, comprises the steps:
S1, pressure unit are measured 1# stove district furnace pressure P01,2# stove district furnace pressure P02 and 1# distance piece furnace gas furnace pressure P12 at 1# stove district pressure port 9,2# stove district pressure port 10, distance piece pressure port 11 place, and each pressure data P01, P02 and P12 are sent to PLC control system respectively; After PLC control system obtains pressure data, two-way flow process will be performed: the fuzzy-adaptation PID control computing flow process of first 1# distance piece self, it two is solution procedurees of 1# distance piece diffusion valve aperture correction factor, last two-way flow process is gathered together, and calculates 1# distance piece diffusion valve aperture and controls.Next be introduced by two-way flow process:
The fuzzy-adaptation PID control computing flow process of flow process one: 1# distance piece self, this flow process is completed by the fuzzy controller of this section;
S2, PLC control system choose that minimum value as Pmin from 1# stove district furnace pressure P01,2# stove district furnace pressure P02 obtained, and calculate Pmin and 1# distance piece furnace gas furnace pressure P12 difference, as Pm;
The rate of change that S3, the sweep time considering PLC control system and stove district furnace pressure fluctuate, the time cycle t (usually can be set as 0.2s) of setting Pm, calculate time variations Δ Pm=Pm (t+1) – Pm (t), and time rate of change Epm=Δ Pm (t+1) – Δ Pm (t) of Pm; Set manually the target set point Spm of PID controller, and Pm is the displayed value of PID controller, Δ Pm and Epm is carried out Fuzzy processing by PLC control system, and performs pid parameter Fuzzy self-turning program, calculates pid parameter.
Pid parameter Fuzzy self-turning finds out PID tri-parameter logistic coefficient k
p, integral action coefficient k
i, integral action coefficient k
dand the fuzzy relation between the time variations Δ Pm of Pm and time rate of change Epm, be in operation by constantly detecting Δ Pm and Epm, fuzzy rule is utilized to carry out fuzzy reasoning, inquiry fuzzy matrix table carries out online modification to three parameters, with during satisfied different Δ Pm and Epm to the different requirements of controling parameters, and make controlled plant have good dynamic and static performance.
So pid parameter must be considered in the not effect of three parameters and relation each other in the same time.Definition Δ Pm and Epm and output language variable q (i.e. k
p, k
iand k
d) fuzzy subset be NB, NM, NS, ZO, PS, PM, PB}, the element in subset represents negative large respectively, in negative, negative little, zero, just little, center, honest.
As shown in table 1 ~ 3, according to artificial technical knowledge and actually operating experience, set up suitable fuzzy reasoning table, obtain for k
p, k
iand k
dthe fuzzy control table of three parameters.
Table 1k
pfuzzy reasoning table
Table 2k
ifuzzy reasoning table
Table 3k
dfuzzy reasoning table
Above-mentioned fuzzy reasoning table all comprises 49 fuzzy rules, between each fuzzy statement be or relation, can manipulated variable q be calculated by the determined control law of first statement
1.In like manner, manipulated variable q can be obtained respectively by all the other each bar statements
2..., q
49, generate the fuzzy set q of manipulated variable, can be expressed as: q=q
1+ q
2+ ... + q
49.
According to the thinking of above formula, just manipulated variable can be become precise volume from fuzzy quantity.In order to obtain manipulated variable accurately, adopt the method for weighted mean deblurring, in domain each element (i=1,2 ..., n), using it as waiting the weighting coefficient of adjudicating the degree of membership μ (i) exporting fuzzy set, namely get product x
iμ (i), then calculate this sum of products
for degree of membership and mean value x
n, namely
mean value x
nbe method of weighted mean be the court verdict that fuzzy set is tried to achieve, thus obtain corresponding Δ k
p, Δ k
iwith Δ k
d, then substitute into formula k
p=k '
p+ Δ k
p, k
i=k '
i+ Δ k
i, k
p=k '
p+ Δ k
p(k '
p, k '
i, k '
dall the pid parameters in a upper moment) calculate.
S4, the pid parameter calculated by step S3 substitute into PID controller, and PID controller sends the output valve MV of pid parameter to association arithmetic and control unit after calculating.
The solution procedure of flow process two: 1# distance piece diffusion valve correction factor, this process completes by associating arithmetic and control unit.
In order to avoid starting nitrogen protection program because distance piece furnace gas furnace pressure is too low, and then destroying furnace pressure and atmosphere distribution, needing while diffusion valve carries out fuzzy PID regulation, according to distance piece furnace gas furnace pressure fluctuation situation, diffusion valve aperture being revised.
Silicon steel continuous annealing furnace usually has 3 sections and above distance piece, in order to isolate multiple stove section atmosphere, and between adjacent distance piece, share same stove district, the furnace pressure regulating effect of adjacent distance piece is caused to influence each other, if their adjustment is asynchronous, serious negative effect will be produced, affect the integrally-regulated of annealing furnace, so distance piece furnace gas controling of the pressure of the oven self completes except control except each distance piece, also need to realize the cooperation between adjacent distance piece.
As shown in Figure 2, for 1# distance piece, 1# distance piece periphery is adjacent with 2# distance piece, so the furnace pressure of 2# distance piece regulates the adjustment that must affect 1# distance piece, so when utilizing the distance piece furnace gas furnace pressure situation that fluctuates to revise diffusion valve aperture, except the fluctuation of consideration 1# distance piece self furnace pressure, also to consider that 2# distance piece furnace gas furnace pressure fluctuates.
S5, the difference of calculating 1# distance piece furnace gas furnace pressure P12 and 1# alarm setting value SV1 and the accounting Δ P1 of distance piece furnace gas furnace pressure maximum range P12max, namely
For distance piece diffusion valve correction factor, through practice summary in the present embodiment, provide a kind normal distyribution function:
f(x)＝exp[-π(x-μ)
2](1)
Rule of thumb expected value μ is set by artificial, and μ ∈ (0,1), x ∈ [0, μ], substituted into by Δ P1 in the x of function (1), the f (x) tried to achieve is 1# distance piece diffusion valve normal state COEFFICIENT K 12.
S6, by step S5 in like manner, calculates the difference of 2# distance piece furnace gas furnace pressure P23 and 2# alarm setting value SV2 and the accounting Δ P2 of distance piece furnace gas furnace pressure maximum range P23max, namely
Substituted in the x in function (1) by Δ P2, the f (x) tried to achieve is 2# distance piece diffusion valve normal state COEFFICIENT K 23.
S7, K12, K23 of obtaining according to step S5 ~ S6, setting 1# distance piece diffusion valve correction factor is J12, be subject to 1# distance piece normal state COEFFICIENT K 12 according to 1# distance piece diffusion valve correction factor J12 size and 2# distance piece normal state COEFFICIENT K 23 affects, calculate 1# distance piece diffusion valve correction factor J12=K12 × K23.
S8, the fuzzy controller obtained according to step S4 export the 1# distance piece diffusion valve correction factor J12 that MV and step S7 obtains, calculate 1# distance piece diffusion valve by association arithmetic and control unit and export aperture MV12=J12 × MV, and MV12 calculation result is assigned to 1# distance piece diffusion valve in order to regulate distance piece furnace gas furnace pressure.
As shown in Figure 2 and Figure 3, above-mentioned flow process introduces for 1# distance piece furnace gas controling of the pressure of the oven, and for other distance pieces, its control method is the same.But for 2# distance piece furnace gas controling of the pressure of the oven, because 1# distance piece is faced on a 2# distance piece left side, 3# distance piece is faced on the right side, and its controling of the pressure of the oven affects by 1# and 3#, so its diffusion valve correction factor should be the product of 1#, 2# and 3# distance piece normal state coefficient.
Claims (2)
1. for a method for silicon steel continuous annealing furnace distance piece controling of the pressure of the oven, it is characterized in that: this distance piece isolates baffle plate by 1#, 2# isolates baffle plate, bleeder, diffuse variable valve and diffuse isolation baffle plate forms, and control method comprises the steps:
S1, pressure transmitter measurement 1# stove district furnace pressure P01,2# stove district furnace pressure P02 and 1# distance piece furnace gas furnace pressure P12, and each pressure data P01, P02 and P12 are sent to PLC control system;
S2, PLC control system choose that minimum value as Pmin from 1# stove district furnace pressure P01,2# stove district furnace pressure P02 obtained; Calculate Pmin and 1# distance piece furnace gas furnace pressure P12 difference, as Pm;
The rate of change that S3, the sweep time considering PLC control system and stove district furnace pressure fluctuate, the time cycle t of setting Pm, calculate time variations Δ Pm=Pm (t+1) – Pm (t), and time rate of change Epm=Δ Pm (t+1) – Δ Pm (t) of Pm; Set manually the target set point Spm of PID controller, and Pm is the displayed value of PID controller, Δ Pm and Epm is carried out Fuzzy processing by PLC control system, and performs pid parameter Fuzzy self-turning program, calculates pid parameter;
S4, the pid parameter calculated by step S3 substitute into PID controller, and PID controller sends its output valve MV to association arithmetic and control unit after calculating;
S5, the difference of calculating 1# distance piece furnace gas furnace pressure P12 and 1# alarm setting value SV1 and the accounting Δ P1 of distance piece furnace gas furnace pressure maximum range P12max, namely
1# distance piece diffusion valve normal state COEFFICIENT K 12 and accounting Δ P1 meet the relation of following formula class normal distyribution function:
K12＝exp[-π(ΔP1-μ)
2](1)
In formula, μ is expected value, by manually rule of thumb setting, and μ ∈ (0,1), Δ P1 ∈ [0, μ];
Accounting Δ P1 is substituted in formula (1), tries to achieve 1# distance piece diffusion valve normal state COEFFICIENT K 12;
S6, by step S5 in like manner, try to achieve 2# distance piece diffusion valve normal state COEFFICIENT K 23, specific as follows:
Calculate the difference of 2# distance piece furnace gas furnace pressure P23 and 2# alarm setting value SV2 and the accounting Δ P2 of distance piece furnace gas furnace pressure maximum range P23max, namely
2# distance piece diffusion valve normal state COEFFICIENT K 23 and accounting Δ P2 meet the relation of following formula class normal distyribution function:
K23＝exp[-π(ΔP2-μ)
2](2)
In formula, μ is expected value, by manually rule of thumb setting, and μ ∈ (0,1), Δ P2 ∈ [0, μ];
Accounting Δ P2 is substituted in formula (2), tries to achieve 2# distance piece diffusion valve normal state COEFFICIENT K 23;
S7, K12, K23 of obtaining according to step S5 ~ S6, setting 1# distance piece diffusion valve correction factor is J12, be subject to 1# distance piece normal state COEFFICIENT K 12 according to 1# distance piece diffusion valve correction factor J12 size and 2# distance piece normal state COEFFICIENT K 23 affects, calculate 1# distance piece diffusion valve correction factor J12=K12 × K23;
S8, the fuzzy controller obtained according to step S4 export the 1# distance piece diffusion valve correction factor J12 that MV and step S7 obtains, calculate 1# distance piece diffusion valve by association arithmetic and control unit and export aperture MV12=J12 × MV, and MV12 calculation result is assigned to 1# distance piece diffusion valve in order to regulate distance piece furnace gas furnace pressure.
2. the method for silicon steel continuous annealing furnace distance piece furnace gas controling of the pressure of the oven according to claim 1, it is characterized in that: the impact considering adjacent both sides distance piece normal state coefficient when calculating other distance piece diffusion valve correction factors, with step S5 ~ S7 in like manner, 2# diffusion valve correction factor is the product of 1# distance piece normal state COEFFICIENT K 12,2# distance piece normal state COEFFICIENT K 23 and 3# distance piece normal state COEFFICIENT K 34, and other diffusion valve correction factors by that analogy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510683736.8A CN105132668B (en) | 2015-10-20 | 2015-10-20 | A kind of method for silicon steel continuous annealing furnace distance piece controling of the pressure of the oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510683736.8A CN105132668B (en) | 2015-10-20 | 2015-10-20 | A kind of method for silicon steel continuous annealing furnace distance piece controling of the pressure of the oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105132668A true CN105132668A (en) | 2015-12-09 |
| CN105132668B CN105132668B (en) | 2017-08-11 |
Family
ID=54718232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510683736.8A Active CN105132668B (en) | 2015-10-20 | 2015-10-20 | A kind of method for silicon steel continuous annealing furnace distance piece controling of the pressure of the oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105132668B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107797512A (en) * | 2016-08-31 | 2018-03-13 | 鞍钢股份有限公司 | A kind of the controling of the pressure of the oven system and control method of the production of naked light formula annealing furnace automobile steel |
| CN109750250A (en) * | 2019-01-15 | 2019-05-14 | 重庆望变电气（集团）股份有限公司 | A kind of nitriding furnace isolating device and isolation control system |
| CN110607434A (en) * | 2019-09-05 | 2019-12-24 | 首钢京唐钢铁联合有限责任公司 | Annealing furnace pressure control method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4596526A (en) * | 1985-03-04 | 1986-06-24 | Worthington Industries, Inc. | Batch coil annealing furnace and method |
| CN200967830Y (en) * | 2006-10-31 | 2007-10-31 | 黄石山力科技发展有限公司 | Protective atmosphere isolation apparatus for cold rolling strip steel continuous annealing furnace |
| CN200992564Y (en) * | 2006-12-28 | 2007-12-19 | 中冶南方(武汉)威仕工业炉有限公司 | Continuous anhealing furnace atmosphere double-baffle isolating device |
| CN102994672A (en) * | 2012-11-30 | 2013-03-27 | 武汉钢铁(集团)公司 | Automatic control method for top pressure of TRT (blast furnace top gas recovery turbine unit) system |
| CN104178623A (en) * | 2014-09-04 | 2014-12-03 | 东北大学 | Hearth pressure control system and method for heat treatment furnace |
-
2015
- 2015-10-20 CN CN201510683736.8A patent/CN105132668B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4596526A (en) * | 1985-03-04 | 1986-06-24 | Worthington Industries, Inc. | Batch coil annealing furnace and method |
| CN200967830Y (en) * | 2006-10-31 | 2007-10-31 | 黄石山力科技发展有限公司 | Protective atmosphere isolation apparatus for cold rolling strip steel continuous annealing furnace |
| CN200992564Y (en) * | 2006-12-28 | 2007-12-19 | 中冶南方(武汉)威仕工业炉有限公司 | Continuous anhealing furnace atmosphere double-baffle isolating device |
| CN102994672A (en) * | 2012-11-30 | 2013-03-27 | 武汉钢铁(集团)公司 | Automatic control method for top pressure of TRT (blast furnace top gas recovery turbine unit) system |
| CN104178623A (en) * | 2014-09-04 | 2014-12-03 | 东北大学 | Hearth pressure control system and method for heat treatment furnace |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107797512A (en) * | 2016-08-31 | 2018-03-13 | 鞍钢股份有限公司 | A kind of the controling of the pressure of the oven system and control method of the production of naked light formula annealing furnace automobile steel |
| CN109750250A (en) * | 2019-01-15 | 2019-05-14 | 重庆望变电气（集团）股份有限公司 | A kind of nitriding furnace isolating device and isolation control system |
| CN110607434A (en) * | 2019-09-05 | 2019-12-24 | 首钢京唐钢铁联合有限责任公司 | Annealing furnace pressure control method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105132668B (en) | 2017-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sun et al. | Tuning of active disturbance rejection control with application to power plant furnace regulation | |
| Sun et al. | Direct energy balance based active disturbance rejection control for coal-fired power plant | |
| CN104967135B (en) | Multiple domain time lag interconnected electric power system sliding formwork LOAD FREQUENCY control method containing wind-powered electricity generation | |
| CN104315683B (en) | Fuzzy PID (proportion integration differentiation) -based water-cooled air conditioner regulation and control method | |
| Wu et al. | Temperature gradient control of a solid oxide fuel cell stack | |
| CN104898433B (en) | A kind of blast furnace cooling intensity control method based on fuzzy-adaptation PID control | |
| CN105423334B (en) | Combustion of Hot Air Furnace Intelligent Process Control system and method | |
| CN105132668A (en) | Method for controlling pressure of silicon steel continuous annealing furnace separation section | |
| CN104090491B (en) | Gas steam combined cycle unit multivariable constrained prediction function load control method | |
| CN102213475A (en) | Adaptive management method for power consumption of data center | |
| CN111637444B (en) | Nuclear power steam generator water level control method based on Q learning | |
| CN110501909A (en) | The Fuzzy Predictive Control method of enhancing robust property based on disturbance observer | |
| CN100349076C (en) | Control method of evaporation rate in Chinese medicine production concentration process | |
| CN105676647A (en) | Combined cooling heating and power supply system prediction control method based on state observer | |
| CN106054596A (en) | PID (Proportion Integration Differentiation) controller parameter optimization setting method based on improved performance indexes | |
| CN109858163A (en) | A kind of active disturbance rejection feed forward control method of lithium-bromide absorption-type refrigerating machine | |
| CN106765957B (en) | Water supply variable temperature control system based on load prediction and comfort level feedback | |
| CN107608415A (en) | A kind of electrical heating pure steam generator based on fuzzy-adaptation PID control | |
| CN103711566B (en) | Engine system | |
| CN104432453A (en) | Method for controlling roller hot air temperature | |
| Li et al. | Model predictive control with feedforward strategy for gas collectors of coke ovens | |
| CN108187362B (en) | A kind of rectifying column beacon flint control method | |
| CN106054610A (en) | Optimized PI (Proportional Integral) controller parameter engineering setting method | |
| CN107461977A (en) | A kind of intelligent temperature control method of semiconductor refrigeration temperature control case | |
| CN105138041A (en) | Method for controlling main steam temperature of thermal power generating unit for implementing DCS |
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 |