CN2833667Y - Automatic blast-furnace tuyere slag control apparatus - Google Patents
Automatic blast-furnace tuyere slag control apparatus Download PDFInfo
- Publication number
- CN2833667Y CN2833667Y CN 200520073531 CN200520073531U CN2833667Y CN 2833667 Y CN2833667 Y CN 2833667Y CN 200520073531 CN200520073531 CN 200520073531 CN 200520073531 U CN200520073531 U CN 200520073531U CN 2833667 Y CN2833667 Y CN 2833667Y
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- blast
- wind turning
- valve
- blast furnace
- wind
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- 239000002893 slag Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 2
- 230000000246 remedial effect Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 7
- 238000002955 isolation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000505 pernicious effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Blast Furnaces (AREA)
Abstract
The utility model discloses a kind of automatic controller of blast-furnace tuyere pour slag, its principal feature is between the air supply duct of two blast furnaces, set up the wind turning pipeline of a suitable bore near the entry position of heat generator, two is equipped with electronic cut-out butterfly valve, the centre is equipped with the wind turning control butterfly valve of quick unlatching, the PLC system and device is connected with the control corresponding valve with two blast furnace blower motors, and its running status is detected judgement, and corresponding execution wind turning control action; The PLC system detects and carries out the action control procedure.This device can solve the disconnected wind remedial measures in emergency circumstances of blast furnace, and slag is irritated in the prevention air port, and the continuous stable yields of blast furnace is played good facilitation.
Description
Technical field
The utility model relates to a kind of ironmaking tuyere of blast furnace ventilation controller.
Technical background
Along with the development of China's steel and iron industry, the blast furnace sum of China has reached nearly thousand.All kinds of blast furnaces are in operation and all will run into an insoluble problem, Here it is blast-furnace tuyere pour slag.Blast furnace is normally in service, fan blower similarly is the heart of blast furnace, it constantly send hot blast by heat generator to blast furnace, the hot blast of sending in the burner hearth has certain blast pressure, in order to overcome fan resistance and stock column resistance, to guarantee in the burner hearth coke and the coal dust generation reductive agent that fully burns, make reduction of iron ore in the burner hearth form molten iron and produce slag and sink to cupola well, slag is lighter than molten iron and floats over above the molten iron.But under special circumstances,, thereby cause suddenly out-of-blast accident to take place owing to the reason of each side such as blower fan machinery, electric automatic protective system can cause sudden power or shutdown.To about 8 seconds after 380-450 square metre the medium and small blast furnace blowing-out, the potpourri of unsegregated molten iron and slag is all solidifying under the deposition on tens air outlets in the stove, thereby causes the air port to irritate slag.After forming the air port and irritating slag, the blast furnace repairing that must stop production will be employed great amount of manpower and material resources the air port is changed, and the repairing process approximately needs tens hours, and the direct economic loss that every blast furnace causes owing to this accident will be more than 1,000,000 yuan.
The air port is irritated the slag accident and is difficult to prediction, and inevitable, every blast furnace all will take place 1-2 time every year, and the whole nation is annual because the economic loss that this accident causes will be more than 1,000,000,000 yuans.Temperature, dust, poisonous gas all can bring great injury to the maintainer in the State of Blast Furnace, and the repairing condition is very arduous.Therefore, Iron industry presses for provides the realistic plan that can solve blast-furnace tuyere pour slag.
Summary of the invention
The purpose of this utility model provides a kind of ironmaking tuyere of blast furnace that can prevent and irritates the ventilation controller of slag.
The scheme that the utility model automatic controller of blast-furnace tuyere pour slag provides is: between the air supply duct of two blast furnaces, set up the wind turning pipeline of a suitable bore near the entry position of heat generator, two is equipped with electronic cut-out butterfly valve, the centre is equipped with the wind turning control butterfly valve of quick unlatching, the PLC system and device is connected with the control corresponding valve with the state of two blast furnace blower motors, its running status is detected judgement, and corresponding execution wind turning control action; The PLC system detects and also to carry out the action control procedure: 1. the PLC system detects the operating mode of safe operation of running status, the blower fan of blower motor, in order to the normal and accident condition of judgment task blower fan, and corresponding execution wind turning control action; 2. the PLC system detects the opening of air-valve, in order to judge that this typhoon machine is orderly closedown or force outage, avoids wind turning control misoperation; 3. the PLC system detects the full-gear of blower fan outlet non-return valve, in order to the protection exception blower fan, prevents from blower fan machinery is caused pernicious damage; 4. the PLC system detects the blast pressure of operate as normal blower fan; blast pressure must (generally be set at 100～120KPa) greater than certain set pressure; just allow to carry out the wind turning control action, in order to protect normal but be in the blast furnace and the blower fan (only a few operating mode) of slow air quantity air feed.5. input/the exit status of other opening, wind turning control, hand-operated forced, pilot system, accident action record etc. as the wind turning isolation valve.
The utility model automatic controller of blast-furnace tuyere pour slag can detect the ordinary production and the improper production status of blast furnace blower simultaneously, and the operating condition of other blast furnace blowers solves the disconnected wind remedial measures in emergency circumstances of blast furnace, characteristics at blast-furnace tuyere pour slag, within short several seconds, before the air port slag solidifies, certain blast is recovered to reach in each air port, to keep overcoming stock column resistance in the stove, reach the prevention air port and irritate the effect of slag, the continuous stable yields of blast furnace is played good facilitation.
Description of drawings
Fig. 1 is the utility model automatic controller of blast-furnace tuyere pour slag synoptic diagram.
Fig. 2 is the utility model automatic controller of blast-furnace tuyere pour slag working site synoptic diagram.
Among Fig. 1: 1, Ethernet bridge 2, PLC system 3, measuring instrument 4, valve site
Among Fig. 2: 5; heat generator 6; 1# blast furnace 7; 2# blast furnace 8; standby fan 9; standby fan non-return valve 10; standby fan goes out air-valve 11; 1# blower fan 12; 1# blower fan safe operation protection action 13; 1# motor stopped status 14; 1# blower fan non-return valve 15; the 1# blower fan goes out air-valve 16; 1# blower fan blast pressure 17; wind turning pipeline 18; V3 isolation valve 19; V4 operation valve 20; V5 isolation valve 21; 2# blower fan 22; 2# blower fan safe operation protection action 23; 2# motor stopped status 24; 2# blower fan non-return valve 25; the 2# blower fan goes out air-valve 26; 2# blower fan blast pressure
Embodiment
In conjunction with Fig. 1 and Fig. 2 the utility model automatic controller of blast-furnace tuyere pour slag course of work is described as follows:
As seen from Figure 1, utilize between the air supply duct of two blast furnaces, set up the wind turning pipeline of a suitable bore near the entry position of heat generator, two is equipped with electronic cut-out butterfly valve, the centre is equipped with the wind turning control butterfly valve of quick unlatching, and the PLC system of device is judged the two typhoon machines of ordinary production and the detection of motor operating state.Concrete detect and executing state is: 1. under the normal condition, the PLC system detects the operating mode of safe operation of running status, the blower fan of two blast furnace blower motors 1,2, in order to the judgment task blower fan normally and accident condition, and corresponding execution wind turning control action; 2. go out the opening of air-valve,, avoid wind turning control misoperation in order to judge that this typhoon machine is orderly closedown or force outage; 3. the full-gear of blower fan outlet non-return valve in order to the protection exception blower fan, prevents from blower fan machinery is caused pernicious damage; 4. the blast pressure of operate as normal blower fan must (generally be set at 100～120KPa), just allow carry out the wind turning control action, in order to protect normal but be in the blast furnace and the blower fan (only a few operating mode) of slow air quantity air feed greater than certain set pressure.5. input/the exit status of other the opening as the wind turning isolation valve, wind turning control, hand-operated forced, pilot system, accident action record etc. are supporting display operation and management tool.Break down in emergency circumstances at a certain typhoon machine, carry out fast control command, wind turning control butterfly valve was opened fully at 2.5 seconds, made because of the break blast-furnace tuyere of wind of fan trouble to recover ventilation rapidly in 6 seconds, and keep certain pressure, prevent that the blast-furnace tuyere pour slag accident from taking place.
Control procedure that can the illustrative system wind turning from Fig. 2 is as follows:
1. the PLC system detects the operating mode of safe operation of running status, the blower fan of blower motor, the normal and accident condition of judgment task blower fan, and corresponding execution wind turning control action; When system is in wind turning equipment normal condition, this moment, operating personnel should confirm that V3, V5 wind turning isolate motorized valve and open; When possessing the wind turning logical condition, wind turning operation valve V4 will open fast; After wind turning finished, operating personnel will close one with wind turning isolation valve V3 or V5 earlier, then quick closedown wind turning operation valve V4;
2. the PLC system detects the opening of air-valve, judges that this typhoon machine is orderly closedown or force outage, avoids wind turning control misoperation; When 1,2 blower fans go out air-valve and are in open mode, can assert that two typhoon machines are in normal operation, therefore a certain typhoon machine fault allows when the wind turning condition is set up to this blast furnace wind turning; Go out air-valve during orderly closedown and be in closed condition, also need not to this blast furnace wind turning even other condition is set up;
3. the PLC system detects the blast pressure of operate as normal blower fan, and blast pressure must generally be set at 100～120KPa greater than certain set pressure, just allows to carry out the wind turning control action; When a certain fan trouble, the blower fan that a condition of blast furnace and the wind turning of blower fan safety is another work exert oneself (blast) want the setting value of overpressure just to allow to another blast furnace wind turning, otherwise can influence the operating mode of this normal blast furnace and blower fan;
4. take place or main motor operation signal disappears and blower fan outlet non-return valve complete shut-down when the safe operation guard signal of a certain blower fan, under the condition that 1. this condition all takes place and～3. possess simultaneously, wind turning operation valve V4 will open fast, realize the wind turning function;
5. getting rid of under the situation of all conditions, when needing to force manual wind turning, can open the V4 operation valve fast, realizing manual wind turning function;
6. put into operation or main air blower recovers normal when standby fan, after pressure reaches set-point, can be earlier with V3 or V5 wherein a motorized valve close, quick closedown V4 operation valve then, working fan is in normal ventilation state; The operating mode of the running status of PLC system detection blower motor, the safe operation of blower fan, the normal and accident condition of judgment task blower fan, and corresponding execution wind turning control action.
Claims (1)
1, a kind of automatic controller of blast-furnace tuyere pour slag, form by wind turning pipeline, by-pass valve control and PLC control system device, it is characterized in that between the air supply duct of two blast furnaces, set up the wind turning pipeline of a suitable bore near the entry position of heat generator, two is equipped with electronic cut-out butterfly valve, the centre is equipped with the wind turning control butterfly valve of quick unlatching, the PLC system and device is connected with the control corresponding valve with two blast furnace blower motors, its running status is detected judgement, and corresponding execution wind turning control action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073531 CN2833667Y (en) | 2005-07-12 | 2005-07-12 | Automatic blast-furnace tuyere slag control apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073531 CN2833667Y (en) | 2005-07-12 | 2005-07-12 | Automatic blast-furnace tuyere slag control apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2833667Y true CN2833667Y (en) | 2006-11-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520073531 Expired - Lifetime CN2833667Y (en) | 2005-07-12 | 2005-07-12 | Automatic blast-furnace tuyere slag control apparatus |
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| Country | Link |
|---|---|
| CN (1) | CN2833667Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051437A (en) * | 2010-12-30 | 2011-05-11 | 中国恩菲工程技术有限公司 | Air-supplying device for revolving furnace |
| CN102174665A (en) * | 2010-12-30 | 2011-09-07 | 中国恩菲工程技术有限公司 | Air supply control method for converter |
| CN103266193A (en) * | 2013-05-24 | 2013-08-28 | 重庆钢铁(集团)有限责任公司 | Wind transfer security system |
-
2005
- 2005-07-12 CN CN 200520073531 patent/CN2833667Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051437A (en) * | 2010-12-30 | 2011-05-11 | 中国恩菲工程技术有限公司 | Air-supplying device for revolving furnace |
| CN102174665A (en) * | 2010-12-30 | 2011-09-07 | 中国恩菲工程技术有限公司 | Air supply control method for converter |
| CN102051437B (en) * | 2010-12-30 | 2013-11-13 | 中国恩菲工程技术有限公司 | Air-supplying device for revolving furnace |
| CN102174665B (en) * | 2010-12-30 | 2015-10-28 | 中国恩菲工程技术有限公司 | A kind of air feed control method for converter |
| CN103266193A (en) * | 2013-05-24 | 2013-08-28 | 重庆钢铁(集团)有限责任公司 | Wind transfer security system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: MAANSHAN FIRST AUTO-CONTROL CO., LTD. Free format text: FORMER OWNER: FUSITE SCIENCE AND TECHNOLOGY DEVELOPMENT CO., LTD., MAANSHAN Effective date: 20140725 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 243011 MAANSHAN, ANHUI PROVINCE TO: 243000 MAANSHAN, ANHUI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140725 Address after: 243000 Anhui city of Ma'anshan province Dangtu Lixian Industrial Park Road and the intersection of Longchang Road Patentee after: Maanshan First Auto-control Co., Ltd. Address before: 243011, the three section of plum blossom garden, Jiangdong Avenue, Anhui, Ma'anshan Patentee before: Fusite Science and Technology Development Co., Ltd., Maanshan |
|
| CX01 | Expiry of patent term |
Expiration termination date: 20150712 Granted publication date: 20061101 |
|
| EXPY | Termination of patent right or utility model |