CN106052410A - Pulse control method for multiple burning nozzles of heating furnace - Google Patents

Pulse control method for multiple burning nozzles of heating furnace Download PDF

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Publication number
CN106052410A
CN106052410A CN201610580056.8A CN201610580056A CN106052410A CN 106052410 A CN106052410 A CN 106052410A CN 201610580056 A CN201610580056 A CN 201610580056A CN 106052410 A CN106052410 A CN 106052410A
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CN
China
Prior art keywords
burner
heating furnace
pid controller
control method
cycle period
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Pending
Application number
CN201610580056.8A
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Chinese (zh)
Inventor
吉顺冬
丁鹏坤
丁日意
顾剑锋
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Jiangsu Fengdong Thermal Technology Co Ltd
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Jiangsu Fengdong Thermal Technology Co Ltd
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Priority to CN201610580056.8A priority Critical patent/CN106052410A/en
Publication of CN106052410A publication Critical patent/CN106052410A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices
    • F27D2019/0006—Monitoring the characteristics (composition, quantities, temperature, pressure) of at least one of the gases of the kiln atmosphere and using it as a controlling value
    • F27D2019/0018—Monitoring the temperature of the atmosphere of the kiln

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)

Abstract

The invention discloses a pulse control method for multiple burning nozzles of a heating furnace. According to the method, a PID controller is adopted to control the opening time and opening pulse duration of the multiple burning nozzles and calculate a difference value between an actual temperature value in the furnace and a set temperature value; and the opening pulse duration of each burning nozzle is determined by combining PID calculation with a cycle period. According to the pulse control method disclosed by the invention, the temperature stability in a furnace chamber of the heating furnace is guaranteed, and the heating quality of products is improved.

Description

A kind of heating furnace many burners pulse control method
Technical field
The present invention relates to burning control in heating furnace field, particularly relate to a kind of heating furnace many burners pulse control method.
Background technology
In prior art, the combustion control system of heating furnace opens and closes while can only realizing multiple burner, its Have following defects that multiple burner starts simultaneously at or closes so that the temperature fluctuation in the furnace chamber of heating furnace is relatively big, reduces In-furnace temperature stability, have impact on the heating quality of product.
Summary of the invention
The present invention is directed to the problems referred to above, it is provided that a kind of heating furnace many burners pulse control method, the method uses one Individual PID controller controls opening time and the unbalanced pulse duration of multiple burners, thus in the furnace chamber of the heating furnace that ensure that Temperature stability, its technical scheme is as follows:
A kind of heating furnace many burners pulse control method, this control method controls N number of burning by a PID controller The opening time of mouth and unbalanced pulse duration, wherein: N is the natural number not less than 2, it is characterised in that this control method includes Following steps:
Step one: be arranged in bottom the furnace chamber of heating furnace by described N number of burner, each described burner passes through burner Controller is connected with the outfan of described PID controller；
Step 2: temperature sensor is installed to the furnace chamber of heating furnace, and the signal of described temperature sensor is exported End is connected with the input of described PID controller；
Step 3, setting predetermined temperature value, the cycle period Tmax of burner work and the interval duration of burner work Tmin also preserves to described PID controller, and each burner successively and is spaced Tmin unlatching, wherein: Tmin=Tmax/N；
A length of T1, T2 ..., TN during unbalanced pulse in cycle period Tmax each described of step 4, each burner, Actual temperature value in the furnace chamber of the heating furnace gathered according to described temperature sensor by described PID controller and step 3 set The described predetermined temperature value put carries out PID arithmetic, and exports described first burner, the second burner, the 3rd burner and Four burners unlatching duration percentage ratio u in cycle period Tmax each describedi(t):
u i ( t ) = K p e ( t ) + K i ∫ e ( t ) d t + K d d e ( t ) d t
Wherein: Kp, Ki and Kd are respectively proportionality constant, integral constant and derivative constant, i is the sequence number of burner, e (t) For in the actual temperature value in the furnace chamber of heating furnace and step 3 arrange predetermined temperature value between the temperature difference；
Each described burner described unlatching duration percentage ratio u in cycle period Tmax each describedi(t)
Be multiplied the institute i.e. obtaining each described burner in cycle period Tmax each described with described cycle period Tmax State pulse and open duration T1, T2 ..., TN.
As a further improvement on the present invention, it controls the unlatching of four burners, described circulating cycle by PID controller Phase Tmax is 120s, and described interval duration Tmin is 30s.
Compared with prior art, the method have technical effect that: use a PID controller to control multiple burners Opening time and unlatching duration, thus the temperature stability in the furnace chamber of the heating furnace that ensure that, improve product adds caloic Amount.
Accompanying drawing explanation
Fig. 1 is present invention control principle drawing in a specific embodiment；
Fig. 2 is that duration schematic diagram is opened in the pulse of the present invention each burner in a specific embodiment.
Detailed description of the invention
As it is shown in figure 1, in a concrete application, heating furnace many burners pulse control method of the present invention, it passes through One PID controller controls opening time and the unbalanced pulse duration of 4 burners, and it comprises the steps:
Step one: the first burner, the second burner, the 3rd burner and the 4th burner are arranged in the stove of heating furnace Bottom chamber, each burner is connected with the outfan of described PID controller by burner controller.Described burner controller When the control signal sent according to described PID controller is opened each burner successively and controls the unbalanced pulse of each burner Long.
Step 2: temperature sensor is installed to the furnace chamber of heating furnace, and the signal of described temperature sensor is exported End is connected with the input of described PID controller.Described temperature sensor actual temperature in the furnace chamber gathering heating furnace Described actual temperature value is also transferred to described PID controller by value.
Step 3: set predetermined temperature value, the cycle period Tmax of burner work and the interval duration of burner work Tmin also preserves to described PID controller, and each burner successively and is spaced Tmin unlatching, wherein: Tmin=Tmax/4.
Step 4: described first burner, the second burner, the 3rd burner and the 4th burner are in circulation each described Unbalanced pulse duration in cycle T max is respectively T1, T2, T3 and T4.Described PID controller is adopted according to described temperature sensor The described predetermined temperature value arranged in actual temperature value in the furnace chamber of the heating furnace of collection and step 3 carries out PID arithmetic, and defeated Go out described first burner, the second burner, the 3rd burner and the 4th burner in cycle period Tmax each described Open duration percentage ratio ui(t):
u i ( t ) = K p e ( t ) + K i ∫ e ( t ) d t + K d d e ( t ) d t
Wherein: Kp, Ki and Kd are respectively proportionality constant, integral constant and derivative constant, i is the sequence number of burner, e (t) For in the actual temperature value in the furnace chamber of heating furnace and step 3 arrange predetermined temperature value between the temperature difference；
Described first burner, the second burner, the 3rd burner and the 4th burner are at cycle period each described Described unlatching duration percentage ratio u in Tmaxi(t) be multiplied with described cycle period Tmax i.e. obtain described first burner, second Described unbalanced pulse duration T1 in cycle period Tmax each described of burner, the 3rd burner and the 4th burner, T2, T3 and T4 is respectively as follows: T1=Tmax × u1(t), T2=Tmax × u2(t), T3=Tmax × u3(t) and T4=Tmax × u4(t)。
As in figure 2 it is shown, in a specific embodiment, described cycle period Tmax is set as 120s, burner work Interval duration Tmin is 30s.
T1, T2, T3, T4 and T1 ', T2 ', T3 ', T4 ' be described first burner, the second burner, the 3rd burner And the 4th burner unbalanced pulse in two continuous print cycle periods.Wherein:
In first pulse period (0s～120s): when PID controller is at 0s, 30s, 60s, 90s successively Control burner controller and open the first burner, the second burner, the 3rd burner and the 4th burner, and synchrometer calculates The unlatching duration percentage ratio of the corresponding burner being unlocked.In the present embodiment, described first burner, the second burner, Three burners and the 4th burner unlatching duration percentage ratio within first pulse period is respectively u1(t)=50%, u2(t) =62.5%, u3(t)=45%, u4(t)=47.5%, corresponding, PID controller controls described first burner, the second burning A length of T1=60s, T2=75s, T3 during unbalanced pulse within first pulse period of mouth, the 3rd burner and the 4th burner =54s, T4=57s.
In second pulse period (120s～240s): PID controller is at 120s, 150s, 180s, 210s Shi Yici controls burner controller and opens the first burner, the second burner, the 3rd burner and the 4th burner, and synchronizes Calculate the unlatching duration percentage ratio of the burner being unlocked of correspondence.In the present embodiment, described first burner, the second burning Mouth, the 3rd burner and the 4th burner unlatching duration percentage ratio within second pulse period are respectively u1(t)= 37.5%, u2(t)=42.5%, u3(t)=27.5%, u4(t)=30%, corresponding, PID controller controls described first combustion A length of T1 ' during unbalanced pulse within second pulse period of burner, the second burner, the 3rd burner and the 4th burner= 45s, T2 '=51s, T1 '=33s, T1 '=36s.
Visible, the present invention uses a PID controller to control opening time and the unbalanced pulse duration of multiple burners, from And the temperature stability in the furnace chamber of the heating furnace that ensure that, improve the heating quality of product.
PID computational methods and control technology in the present invention are existing known technology, specifically can be found in PID automatic control field Textbook or instructive manuals.
Above the present invention has been carried out the most detailed description with certain particularity.Ordinary skill in art Personnel are it should be understood that what description in embodiment was merely exemplary, before without departing from true spirit and scope of the present invention Put that making is changed all should belong to protection scope of the present invention.Scope of the present invention is by described power That profit claim is defined rather than limited by the foregoing description in embodiment.

Claims (2)

1. heating furnace many burners pulse control method, this control method controls N number of burner by a PID controller Opening time and unbalanced pulse duration, wherein: N is the natural number not less than 2, it is characterised in that this control method include as Lower step:
Step one: be arranged in bottom the furnace chamber of heating furnace by described N number of burner, each described burner is controlled by burner Device is connected with the outfan of described PID controller；
Step 2: temperature sensor is installed in the furnace chamber of heating furnace, and by the signal output part of described temperature sensor with The input of described PID controller connects；
Step 3, setting predetermined temperature value, the cycle period Tmax of burner work and the interval duration Tmin of burner work And preserve to described PID controller, each burner successively and is spaced Tmin unlatching, wherein: Tmin=Tmax/N；
A length of T1, T2 during unbalanced pulse in cycle period Tmax each described of step 4, each burner ... TN, by described The institute arranged in actual temperature value in the furnace chamber of the heating furnace that PID controller gathers according to described temperature sensor and step 3 State predetermined temperature value and carry out PID arithmetic, and export described first burner, the second burner, the 3rd burner and the 4th burning Mouth unlatching duration percentage ratio u in cycle period Tmax each describedi(t):
u i ( t ) = K p e ( t ) + K i ∫ e ( t ) d t + K d d e ( t ) d t
Wherein: Kp, Ki and Kd are respectively proportionality constant, integral constant and derivative constant, i is the sequence number of burner, and e (t) is for adding The temperature difference between the predetermined temperature value arranged in actual temperature value in the furnace chamber of hot stove and step 3；
Each described burner described unlatching duration percentage ratio u in cycle period Tmax each describedi(t) and described circulation Cycle T max be multiplied i.e. obtain the described pulse in cycle period Tmax each described of each described burner open duration T1, T2、…、TN。
2. heating furnace many burners pulse control method as claimed in claim 1, it is characterised in that: it passes through PID controller Controlling the unlatching of 4 burners, described cycle period Tmax is 120s, and described interval duration Tmin is 30s.
CN201610580056.8A 2016-07-21 2016-07-21 Pulse control method for multiple burning nozzles of heating furnace Pending CN106052410A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109189118A (en) * 2018-08-27 2019-01-11 江苏丰东热技术有限公司 A kind of burner combustion control method and device
CN109384370A (en) * 2018-08-09 2019-02-26 长兴旗滨玻璃有限公司 Glass melter natural gas burning system plays spray control method
CN114840037A (en) * 2022-05-24 2022-08-02 湖南顶立科技有限公司 Temperature control method and system for steel belt furnace

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080149A (en) * 1976-04-01 1978-03-21 Robertshaw Controls Company Pulse combustion control system
US4891003A (en) * 1987-07-15 1990-01-02 Paloma Kogyo Kabushiki Kaisha Pulse combustion device
CN101737797A (en) * 2010-01-12 2010-06-16 中冶东方工程技术有限公司 Pulse combustion control system and control method
CN102221220A (en) * 2011-03-29 2011-10-19 上海宝钢工业检测公司 Pulse-combustion control method of steel rolling heating furnace
CN103836642A (en) * 2014-03-14 2014-06-04 江南大学 Method for controlling pulse combustion of multiple burners of fuel gas furnace

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080149A (en) * 1976-04-01 1978-03-21 Robertshaw Controls Company Pulse combustion control system
US4891003A (en) * 1987-07-15 1990-01-02 Paloma Kogyo Kabushiki Kaisha Pulse combustion device
CN101737797A (en) * 2010-01-12 2010-06-16 中冶东方工程技术有限公司 Pulse combustion control system and control method
CN102221220A (en) * 2011-03-29 2011-10-19 上海宝钢工业检测公司 Pulse-combustion control method of steel rolling heating furnace
CN103836642A (en) * 2014-03-14 2014-06-04 江南大学 Method for controlling pulse combustion of multiple burners of fuel gas furnace

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109384370A (en) * 2018-08-09 2019-02-26 长兴旗滨玻璃有限公司 Glass melter natural gas burning system plays spray control method
CN109384370B (en) * 2018-08-09 2021-07-16 长兴旗滨玻璃有限公司 Glass melting furnace natural gas combustion system start-up control method
CN109189118A (en) * 2018-08-27 2019-01-11 江苏丰东热技术有限公司 A kind of burner combustion control method and device
CN114840037A (en) * 2022-05-24 2022-08-02 湖南顶立科技有限公司 Temperature control method and system for steel belt furnace
CN114840037B (en) * 2022-05-24 2024-03-26 湖南顶立科技有限公司 Temperature control method and system for steel belt furnace

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Address after: 224100 No. 333 Nanxiang Road, Yancheng City economic and Technological Development Zone, Dafeng District, Jiangsu

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