CN205313585U - Accurate burning control system of blast funnace hot blast stove - Google Patents
Accurate burning control system of blast funnace hot blast stove Download PDFInfo
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- CN205313585U CN205313585U CN201521031023.5U CN201521031023U CN205313585U CN 205313585 U CN205313585 U CN 205313585U CN 201521031023 U CN201521031023 U CN 201521031023U CN 205313585 U CN205313585 U CN 205313585U
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- air
- control system
- blast
- flue
- valve
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Abstract
The utility model provides an accurate burning control system of blast funnace hot blast stove, include: air / coal gas governing valve, sensor unit, the valve is intervened to the flue, the PLC controller, with air / coal gas governing valve sensor unit with the flue is intervened the valve and is connected, the industrial computer, with the PLC controller is connected. The utility model discloses beneficial effect: the heat of combustion that uses fuel balances each other to theoretical foundation with system's heat transfer to multiple type sensor is the control foundation, can effectual control hot -blast furnace the burning, make fully heat accumulation of hot -blast furnace, reach best combustion efficiency, in order to ensure the temperature and time of supplying air to the blast furnace, reduction energy resource consumption that again can furthest prevents the burning of hot -blast furnace vault, in order to prolong the hot -blast furnace life -span.
Description
Technical field
The utility model relates to a kind of accurate combustion control system of blast funnace hot blast stove.
Background technology
Hotblast stove is the important component part of blast-furnace smelting system, and it carries the important task into blast furnace offer hot blast. Due to the complicacy of combustion processes and the limitation of processing unit, hotblast stove automatic combustion becomes the focus of people's research always. Blast funnace hot blast stove provides hot blast with combustion-supporting equipment to blast furnace burning, is a kind of heat accumulation type heat exchanger. Domestic major part blast furnace all adopts three to four, every high furnace zone hotblast stove parallel connection air supply mode in turn, ensures any instantaneous have a hotblast stove to blow to blast furnace, and every hotblast stove is all pressed: burn-stop-blow-stop-sequential loop of burning produces. As one or many hotblast stoves air-supplies, other hotblast stove is in burning or dormant state. After hot-blast furnace temperature in air-supply reduces, the hotblast stove being in dormant state drops into air-supply, and namely former air-supply hotblast stove stops blow and start burning, accumulation of heat until after temperature reaches requirement, proceed to dormant state wait and blow next time.
Traditional blast furnace and hot blast cupola combustion automation system adopts the heating gas flow needed for calculated with mathematical model and combustion air flow, and calculates air-fuel ratio. When the ultimate principle of hotblast stove flow set mathematical model enables burning, the heat storage capacity of stove fillings meets the requirement of hot blast temperature and flow, to obtain optimum economic benefit. Owing to hotblast stove is non-linear a, Large-lag System, affect a lot of because have of hotblast stove, and various factors pins down mutually. The combustion processes of hotblast stove is a continuous print dynamic changing process, and the main difficulty of control is the feedback information that can not obtain control action kou in time, and when control effects measures embodiment by exporting by the time, control action kou intensity now is often excessive.
Through whole nation Ge great iron and steel enterprise is visited investigation and known, present many blast funnace hot blast stoves all use better simply Controlling System, and namely only gas main pressure-controlling and coal gas and artificial atmosphere valve position control automatically, and the set(ting)value of valve position or aperture are by Artificial Control. Correction promptly and accurately is accomplished owing to Artificial Control is difficult to when hotblast stove parameter or state change (gas pressure, caloric power of gas, change furnace operating etc.), cause hotblast stove combustion atmosphere undesirable, the situations such as air-fuel ratio is inaccurate, flow cataclysm occur, and cause coal gas waste and potential safety hazard to occur.
Practical novel content
The utility model proposes a kind of accurate combustion control system of blast funnace hot blast stove, solve problem above-mentioned in prior art.
The technical solution of the utility model is achieved in that
A kind of accurate combustion control system of blast funnace hot blast stove, comprising:
Air/gas variable valve;
Sensor unit;
Valve intervened by flue;
PLC, intervenes valve with described air/gas variable valve, described sensor unit and described flue and is connected;
Industrial computer, is connected with described PLC.
Preferably, in described sensor unit is connected with described PLC coal gas/air line manifold pressure sensor, coal gas/air flow sensor, environment humidity sensor, dome temperature sensor, flue temperature sensor and the residual oxygen sensor of flue any one or multiple.
Preferably, described PLC is connected by signal wire and described air/gas variable valve, described sensor unit and described flue intervention valve.
Preferably, described industrial computer is connected with described PLC by Ethernet or industrial-controlled general line.
Further, the accurate combustion control system of blast funnace hot blast stove described in the utility model, also comprises:
Artificial Control unit, is connected with described industrial computer.
Further, described Artificial Control unit comprises:
Artificial flow controlling unit, is connected with described industrial computer;
Artificial air-fuel ratio, to cell, is connected with described industrial computer.
The beneficial effects of the utility model are:
The accurate combustion control system of blast funnace hot blast stove described in the utility model, balance each other as theoretical basis taking the combustion heat of fuel and system thermal transfer, taking broad variety sensor as control foundation, can effectively control Combustion of Hot Air Furnace, make hotblast stove can fully accumulation of heat, reach best combustion efficiency, to guarantee the temperature and time to blast furnace air-supply, energy consumption can be reduced again to greatest extent, prevent hotblast stove vault burning, to extend lifetime of hot-air stove.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, it is briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structure block diagram of the utility model accurate combustion control system of a kind of blast funnace hot blast stove.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described embodiment is only the utility model part embodiment, instead of whole embodiments. Based on the embodiment in the utility model, those of ordinary skill in the art are not making other embodiments all obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, a kind of accurate combustion control system of blast funnace hot blast stove described in the utility model, comprising:
Air/gas variable valve;
Sensor unit;
Valve intervened by flue;
PLC, intervenes valve with air/gas variable valve, sensor unit and flue and is connected;
Industrial computer, is connected with PLC.
Wherein, the effect of air/gas variable valve is the flow of control air and coal gas; The effect of PLC is the feedback information of collecting sensor unit, it is achieved logic is chain and the function such as protection, exports given valve position to control air/gas variable valve and the action of valve intervened by flue simultaneously;Industrial computer gathers gas pressure, air pressure, gas flow, air flow quantity and gas regulator signal, artificial atmosphere valve signal, ambient temperature and humidity, the residual oxygen of flue from PLC, determined the action of valve by circuit, and send in PLC.
The accurate combustion control system of blast funnace hot blast stove described in the utility model, adopt sensor unit, PLC and industrial computer, with conventional system with people control take as the leading factor compared with, difference in control timeliness is: be randomness and the subjectivity that robot control system(RCS) has stopped manual operation on the one hand, when manual operation, in the face of same field conditions, the control methods of different operating person are completely different with the operation time of response; In the face of almost identical field conditions, the each regulation and control amplitude of same operator also cannot be accomplished identical, and the accurate combustion control system of blast funnace hot blast stove described in the utility model is faced with this situation, then can provide completely the same standard regulation and control amplitude in the very first time; Another aspect is the accurate combustion control system of blast funnace hot blast stove described in the utility model is uninterrupted management in real time to the management and control of temperature and atmosphere, and supervision space when there is not artificial management and control, also just achieves continual and steady temperature, control climate certainly.
Wherein, preferably, in described sensor unit is connected with PLC coal gas/air line manifold pressure sensor, coal gas/air flow sensor, environment humidity sensor, dome temperature sensor, flue temperature sensor and the residual oxygen sensor of flue any one or multiple.
Wherein, it may be preferred that described PLC is intervened valve by signal wire and air/gas variable valve, sensor unit and flue and is connected.
Wherein, it may be preferred that described industrial computer is connected with PLC by Ethernet or industrial-controlled general line.
Wherein, the accurate combustion control system of blast funnace hot blast stove described in the utility model, it is also possible to comprising:
Artificial Control unit, is connected with industrial computer.
The accurate combustion control system of blast funnace hot blast stove described in the utility model, both can realize in real time uninterrupted monitoring, can realize manual monitoring again, improve security under urgent or Special Circumstances.
Wherein, described Artificial Control unit can comprise:
Artificial flow controlling unit, is connected with industrial computer;
Artificial air-fuel ratio, to cell, is connected with industrial computer.
Wherein, the accurate combustion control system of blast funnace hot blast stove described in the utility model, it is also possible to comprising:
Warning unit, is connected with industrial computer. Warning unit comprises sound warning device and light emission alarm device.
The accurate combustion control system of blast funnace hot blast stove described in the utility model, balance each other as theoretical basis taking the combustion heat of fuel and system thermal transfer, taking broad variety sensor as control foundation, can effectively control Combustion of Hot Air Furnace, make hotblast stove can fully accumulation of heat, reach best combustion efficiency, to guarantee the temperature and time to blast furnace air-supply, energy consumption can be reduced again to greatest extent, prevent hotblast stove vault burning, to extend lifetime of hot-air stove.
The foregoing is only better embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. the accurate combustion control system of blast funnace hot blast stove, it is characterised in that, comprising:
Air/gas variable valve;
Sensor unit;
Valve intervened by flue;
PLC, intervenes valve with described air/gas variable valve, described sensor unit and described flue and is connected;
Industrial computer, is connected with described PLC.
2. the accurate combustion control system of blast funnace hot blast stove according to claim 1, it is characterized in that, in the coal gas that described sensor unit is connected with described PLC/air line manifold pressure sensor, coal gas/air flow sensor, environment humidity sensor, dome temperature sensor, flue temperature sensor and the residual oxygen sensor of flue any one or multiple.
3. the accurate combustion control system of blast funnace hot blast stove according to claim 1, it is characterised in that, described PLC is intervened valve by signal wire and described air/gas variable valve, described sensor unit and described flue and is connected.
4. the accurate combustion control system of blast funnace hot blast stove according to claim 1, it is characterised in that, described industrial computer is connected with described PLC by Ethernet or industrial-controlled general line.
5. the accurate combustion control system of blast funnace hot blast stove according to claim 1, it is characterised in that, also comprise:
Artificial Control unit, is connected with described industrial computer.
6. the accurate combustion control system of blast funnace hot blast stove according to claim 5, it is characterised in that, described Artificial Control unit comprises:
Artificial flow controlling unit, is connected with described industrial computer;
Artificial air-fuel ratio, to cell, is connected with described industrial computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031023.5U CN205313585U (en) | 2015-12-14 | 2015-12-14 | Accurate burning control system of blast funnace hot blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031023.5U CN205313585U (en) | 2015-12-14 | 2015-12-14 | Accurate burning control system of blast funnace hot blast stove |
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| Publication Number | Publication Date |
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| CN205313585U true CN205313585U (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521031023.5U Expired - Fee Related CN205313585U (en) | 2015-12-14 | 2015-12-14 | Accurate burning control system of blast funnace hot blast stove |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106222346A (en) * | 2016-06-27 | 2016-12-14 | 南京南瑞继保电气有限公司 | A kind of blast furnace and hot blast cupola combustion optimal control method |
| CN109055640A (en) * | 2018-10-24 | 2018-12-21 | 南京南瑞继保电气有限公司 | A kind of accurate control blast funnace hot blast stove burns the method and device of furnace flue temperature |
| CN112226562A (en) * | 2020-10-27 | 2021-01-15 | 山东莱钢永锋钢铁有限公司 | Hot air temperature automatic regulation protection system |
-
2015
- 2015-12-14 CN CN201521031023.5U patent/CN205313585U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106222346A (en) * | 2016-06-27 | 2016-12-14 | 南京南瑞继保电气有限公司 | A kind of blast furnace and hot blast cupola combustion optimal control method |
| CN106222346B (en) * | 2016-06-27 | 2017-12-22 | 南京南瑞继保电气有限公司 | A kind of blast furnace and hot blast cupola combustion optimal control method |
| CN109055640A (en) * | 2018-10-24 | 2018-12-21 | 南京南瑞继保电气有限公司 | A kind of accurate control blast funnace hot blast stove burns the method and device of furnace flue temperature |
| CN109055640B (en) * | 2018-10-24 | 2020-07-28 | 南京南瑞继保电气有限公司 | Method and device for accurately controlling temperature of furnace burning flue of blast furnace hot blast stove |
| CN112226562A (en) * | 2020-10-27 | 2021-01-15 | 山东莱钢永锋钢铁有限公司 | Hot air temperature automatic regulation protection system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100022, room 1009, block A, building 93, Jianguo Road, Beijing, Chaoyang District Patentee after: Beijing Cheng Cheng Intelligent Technology Co., Ltd. Address before: 100022, room 1009, block A, building 93, Jianguo Road, Beijing, Chaoyang District Patentee before: BEIJING GUANKE ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160615 Termination date: 20201214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |