CN102425808A - Combustion control system of heat accumulating heating furnace - Google Patents
Combustion control system of heat accumulating heating furnace Download PDFInfo
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- CN102425808A CN102425808A CN2011103976888A CN201110397688A CN102425808A CN 102425808 A CN102425808 A CN 102425808A CN 2011103976888 A CN2011103976888 A CN 2011103976888A CN 201110397688 A CN201110397688 A CN 201110397688A CN 102425808 A CN102425808 A CN 102425808A
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Abstract
The invention discloses a combustion control system of a heat accumulating heating furnace. The combustion control system comprises a temperature acquisition device arranged in a hearth of the heating furnace, a controller and a heat accumulating chamber adjusting valve, wherein the controller comprises a proportion integration differentiation (PID) control module; the input end and the output end of the controller are connected with the temperature acquisition device and the heat accumulating chamber adjusting valve; the temperature acquisition device is used for acquiring the temperature in the hearth of the heating furnace and sending a temperature signal to the controller; the controller is used for performing analytic operation of a PID control mode on the received hearth temperature data, calculating a temperature adjusting instruction of the hearth of the heating furnace and sending the temperature adjusting instruction to the heat accumulating chamber adjusting valve; and the heat accumulating chamber adjusting valve is used for reversing adjustment according to the adjusting instruction so as to adjust the heat supply output of a heat accumulating chamber and fulfill the aim of controlling the temperature of the hearth of the heating furnace. Through the system, the stability of automatic adjustment is improved, the influence of interference is reduced, automatic temperature adjustment of the heating furnace is realized, and the billet heating quality of the heating furnace is improved.
Description
Technical field
The present invention relates to a kind of control system, specifically a kind of recuperative heater combustion control system.
Background technology
It is the controlling unit of a big inertia, pure hysteresis that the temperature of iron and steel enterprise's heating furnace is automatically regulated, if regulate badly, can cause the temperature fluctuation aggravation, influences heating furnace steel billet heating quality.The automatic regulative mode of common temperature, when heating-furnace bore temperature T was higher than design temperature, what the automatic regulatory function of temperature can reduce heating furnace went into the stove heating load to reduce furnace temp, makes fire box temperature equal design temperature; When heating-furnace bore temperature PV was lower than design temperature SP, what the automatic regulatory function of temperature can increase heating furnace went into the stove heating load to improve furnace temp, makes fire box temperature equal design temperature.The operation principle of two preheating double heat storage type heating furnaces is that the flue gas in the heating furnace passes through from the heat storage tank of heating furnace both sides according to the commutation cycle in turn, enters atmosphere through flue, the heat storage in the preheating cabinet; And coal gas and the combustion air of going into stove also pass through from the heat storage tank of heating furnace both sides according to the commutation cycle in turn, by preheating the heat storage heating, get into the heating furnace internal combustion then, make full use of the fume afterheat of heating furnace like this.
For two preheating double heat storage type heating furnaces, because the heating furnace type of furnace, even heating furnace reaches thermal equilibrium state, the heating-furnace bore temperature in the cycle, is in the fluctuation status that is similar to sawtooth waveforms at a reversing combustion always like this.If furnace temp is higher than desired temperature when being in the sawtooth waveforms top, what automatically adjusting can reduce heating furnace goes into the stove heating load to reduce furnace temp; When crossing the sawtooth waveforms top, furnace temp still is higher than desired temperature; What automatically adjusting can continue to reduce heating furnace goes into the stove heating load reducing furnace temp, even but do not reduce the heating load furnace temp this moment and also can continue to reduce, therefore; Adopt the common automatic regulative mode of temperature; Can aggravate the fluctuation of heating-furnace bore temperature under certain conditions, make the heating-furnace bore temperature can not get effective adjusting, guarantee not heating furnace steel billet heating quality.
Summary of the invention
To above-mentioned deficiency, the invention provides a kind of recuperative heater combustion control system, it has not only eliminated the fluctuation of heating-furnace bore temperature, and has improved heating furnace steel billet heating quality.
The present invention solves the technical scheme that its technical problem takes: recuperative heater burning control control system; It is characterized in that; Comprise temperature collecting device, controller and regenerator control valve, said temperature collecting device is arranged in the heating furnace burner hearth, and the input of said controller is connected with temperature collecting device; Output is connected with the regenerator control valve, shown in the switching-over of going into producer gas and combustion air of regenerator control valve in order to control regulate and control; Temperature collecting device is gathered the interior temperature of heating furnace burner hearth and temperature signal is sent to controller; Controller is analyzed computing to the fire box temperature data of accepting; Calculate the regulating command of heating-furnace bore temperature and send to the regenerator control valve; The regenerator control valve is according to the regulating command adjusting that commutates, thereby reaches the purpose of control heating-furnace bore temperature with this heating load output of regulating regenerator.
Said temperature collecting device comprises S type thermocouple.
Said controller comprises pid control module, and said pid control module carries out pid control mode to the heating-furnace bore temperature to be regulated.
The invention has the beneficial effects as follows: after adopting said structure; According to the characteristics of recuperative heater, adopt the mode of average filter to eliminate the interference of recuperative heater fire box temperature cyclic swing, when mean temperature and design temperature near the time; Reduce various adjusting outputs, guarantee that output is stable; Because the temperature that temperature deviation was gathered when reducing has hysteresis, reduce interference through the output of blocking proportional in the temperature deviation.The present invention has not only improved self-regulating stability, has reduced the influence of disturbing, and realizes that furnace temp regulates automatically, has improved heating furnace steel billet heating quality.
Description of drawings
Fig. 1 is the structural representation of recuperative heater according to the invention;
Fig. 2 is a theory diagram of the present invention;
Wherein, 1 heating furnace, 2 first regenerator, 3 second regenerator, 4 first burners, second burner, 6 regenerator control valves.
The specific embodiment
As depicted in figs. 1 and 2; The control system is controlled in a kind of recuperative heater burning, comprises temperature collecting device, controller and regenerator control valve, and said temperature collecting device comprises S type thermocouple; Be arranged in the heating furnace burner hearth; The input of said controller is connected with temperature collecting device, and output is connected with the regenerator control valve, shown in the switching-over of going into producer gas and combustion air of regenerator control valve in order to control regulate and control.Said controller comprises pid control module, and said pid control module carries out pid control mode to the heating-furnace bore temperature to be regulated.The S type thermocouple that is arranged in heating furnace 1 burner hearth is gathered the interior temperature of heating furnace burner hearth and temperature signal is sent to controller; Controller carries out PID control analysis computing to the fire box temperature data of accepting; Calculate the regulating command of heating-furnace bore temperature and send to regenerator control valve 6; Regenerator control valve 6 according to regulating command to the adjusting that commutates of first regenerator and second regenerator; Regulate first regenerator or second regenerator is imported heating load through corresponding first burner or second burner to heating furnace with this, thereby reach the purpose of control heating-furnace bore temperature.
The present invention is according to the characteristics of recuperative heater, adopts the mode of average filter to eliminate the interference of recuperative heater fire box temperature cyclic swing, when mean temperature and design temperature near the time, reduce various adjustings outputs, guarantee that output stablizes; Because the temperature that temperature deviation was gathered when reducing has hysteresis, reduce interference through the output of blocking proportional in the temperature deviation.The present invention has not only improved self-regulating stability, has reduced the influence of disturbing, and realizes that furnace temp regulates automatically, has improved heating furnace steel billet heating quality.
Claims (3)
1. the control system is controlled in the recuperative heater burning; It is characterized in that; Comprise temperature collecting device, controller and regenerator control valve, said temperature collecting device is arranged in the heating furnace burner hearth, and the input of said controller is connected with temperature collecting device; Output is connected with the regenerator control valve, shown in the switching-over of going into producer gas and combustion air of regenerator control valve in order to control regulate and control; Temperature collecting device is gathered the interior temperature of heating furnace burner hearth and temperature signal is sent to controller; Controller is analyzed computing to the fire box temperature data of accepting; Calculate the regulating command of heating-furnace bore temperature and send to the regenerator control valve; The regenerator control valve is according to the regulating command adjusting that commutates, thereby reaches the purpose of control heating-furnace bore temperature with this heating load output of regulating regenerator.
2. the control system is controlled in recuperative heater burning according to claim 1, it is characterized in that said temperature collecting device comprises S type thermocouple.
3. the control system is controlled in recuperative heater burning according to claim 1, it is characterized in that said controller comprises pid control module, and said pid control module carries out pid control mode to the heating-furnace bore temperature to be regulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103976888A CN102425808A (en) | 2011-12-05 | 2011-12-05 | Combustion control system of heat accumulating heating furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103976888A CN102425808A (en) | 2011-12-05 | 2011-12-05 | Combustion control system of heat accumulating heating furnace |
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| CN102425808A true CN102425808A (en) | 2012-04-25 |
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| CN2011103976888A Pending CN102425808A (en) | 2011-12-05 | 2011-12-05 | Combustion control system of heat accumulating heating furnace |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913955A (en) * | 2012-06-13 | 2013-02-06 | 北京神雾环境能源科技集团股份有限公司 | Energy-saving fuel gas oven tool |
| CN105276982A (en) * | 2015-11-02 | 2016-01-27 | 保定安保能冶金设备有限公司 | Heat accumulation type molten aluminum furnace temperature control device |
| CN106642195A (en) * | 2016-09-30 | 2017-05-10 | 中冶华天南京电气工程技术有限公司 | Heat accumulation type combustion temperature field split side dynamic delay control method and system |
| CN112944904A (en) * | 2021-02-25 | 2021-06-11 | 张家港宏昌钢板有限公司 | Novel asymmetric double-heat-storage type heating furnace and operation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451767A (en) * | 2009-01-09 | 2009-06-10 | 吴道洪 | Thermal storage type energy-saving boiler and burning method thereof |
| CN202470109U (en) * | 2011-12-05 | 2012-10-03 | 济南钢铁股份有限公司 | Combustion control system for heat accumulating type heating furnace |
-
2011
- 2011-12-05 CN CN2011103976888A patent/CN102425808A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451767A (en) * | 2009-01-09 | 2009-06-10 | 吴道洪 | Thermal storage type energy-saving boiler and burning method thereof |
| CN202470109U (en) * | 2011-12-05 | 2012-10-03 | 济南钢铁股份有限公司 | Combustion control system for heat accumulating type heating furnace |
Non-Patent Citations (2)
| Title |
|---|
| 兰东辉: "轧钢蓄热式加热炉的控制", 《控制工程》, vol. 11, no. 3, 31 May 2004 (2004-05-31) * |
| 曹甄俊等: "天然气高温空气燃烧温度特性的试验研究", 《中国工程热物理学会2008年燃烧学学术会议》, 31 December 2008 (2008-12-31) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913955A (en) * | 2012-06-13 | 2013-02-06 | 北京神雾环境能源科技集团股份有限公司 | Energy-saving fuel gas oven tool |
| CN102913955B (en) * | 2012-06-13 | 2016-03-30 | 北京神雾环境能源科技集团股份有限公司 | A kind of energy-saving gas cooker |
| CN105276982A (en) * | 2015-11-02 | 2016-01-27 | 保定安保能冶金设备有限公司 | Heat accumulation type molten aluminum furnace temperature control device |
| CN106642195A (en) * | 2016-09-30 | 2017-05-10 | 中冶华天南京电气工程技术有限公司 | Heat accumulation type combustion temperature field split side dynamic delay control method and system |
| CN112944904A (en) * | 2021-02-25 | 2021-06-11 | 张家港宏昌钢板有限公司 | Novel asymmetric double-heat-storage type heating furnace and operation method thereof |
| CN112944904B (en) * | 2021-02-25 | 2022-12-09 | 张家港宏昌钢板有限公司 | Novel asymmetric double-heat-storage type heating furnace and operation method thereof |
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Application publication date: 20120425 |