CN103978194A - Precise baking device for steel ladles - Google Patents
Precise baking device for steel ladles Download PDFInfo
- Publication number
- CN103978194A CN103978194A CN201410207670.0A CN201410207670A CN103978194A CN 103978194 A CN103978194 A CN 103978194A CN 201410207670 A CN201410207670 A CN 201410207670A CN 103978194 A CN103978194 A CN 103978194A
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- Prior art keywords
- control valve
- steel
- ladle
- air
- baking
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- 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.)
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Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 43
- 239000010959 steel Substances 0.000 title claims abstract description 43
- 239000000523 sample Substances 0.000 claims abstract description 15
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 23
- 239000000567 combustion gas Substances 0.000 claims description 11
- 239000002737 fuel gas Substances 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 9
- 230000005855 radiation Effects 0.000 claims description 6
- 239000013307 optical fiber Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 12
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 10
- 238000009628 steelmaking Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 229910052742 iron Inorganic materials 0.000 abstract description 6
- 238000009749 continuous casting Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000010079 rubber tapping Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract 2
- 238000012423 maintenance Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to a baking device for steel (iron) ladles in a steelmaking production procedure and particularly relates to a precise baking device for various steel (iron) water tanks which are newly built, coldly repaired, dried, turned over and rapidly heated online. The problem in a steelmaking process that heat loss of liquid steel in a liquid steel transportation process from a steelmaking procedure to a continuous casting procedure is great is solved. The precise baking device structurally comprises a steel ladle, a steel ladle cover, an infrared temperature measurement device, an infrared probe, a control cabinet, a self-pre-heating type burner and a heat accumulator, wherein the infrared temperature measurement device, a gas pipeline and an air pipeline are connected with the control cabinet to increase the control precision; the heating reliability and the measurement and control reliability are improved. The baking device is ingenious in design; the heating quality is completed, the gas consumption is reduced and the controllability of heating equipment is stabilized; the baking temperature of the steel ladles is improved and the tapping temperature is reduced; the baking device has the important effects of prolonging the service life of a furnace body, increasing the steel output, reducing the consumption of raw materials, reducing the cost per ton of steel and guaranteeing the smooth proceeding of continuous casting.
Description
Technical field
The present invention relates to a kind of steel for STEELMAKING PRODUCTION operation (iron) bag apparatus for baking, be specially the accurate apparatus for baking of a kind of ladle.
Background technology
The baking of steel (iron) bag is one of important step in STEELMAKING PRODUCTION operation.The baking of various steel (iron) water pot that is mainly used in new block, cold repair, is dried, has enough to meet the need and is rapidly heated online.The performance of apparatus for baking all had a great impact tapping temperature, steel-making operating rate, furnace life etc.Ladle baking is between two main production processes of steelmaking and continuous casting, and the height of baking temperature of steel ladle plays an important role to coordinating integral production, and the meaning that continuous casting is produced is more great.
Along with the development of smelting technique, the function of ladle has a very large change, and it is not only the instrument that transports molten steel, has been mainly a part into molten steel refining technology.But the heat-energy losses of molten steel is very large in the molten steel running of steel mill from steel making working procedure to continuous casting working procedure at present, wherein ladle accumulation of heat loss accounts for half left and right of molten steel heat-energy losses.The object of ladle baking is to improve equably the temperature levels of ladle liner, to reduce the heat loss of pouring molten steel process and the service life of prolongation ladle liner.If do not adopt ladle baking method, the heat-energy losses of compensation molten steel.Temperature when guaranteeing pouring molten steel, certainly will will improve the tapping temperature of molten steel.But this can bring a series of problem, such as improving tapping temperature, increase the duration of heat, increase raw materials consumption, improve ton steel cost etc., secondly also can make lining wear speed accelerate and reduce furnace life.Hence one can see that, and the development of the demand of high-quality steel and higher temperature smelting technique requires to have novel, efficient ladle baking facilities.
And the key of controlling ladle temperature is to measure how rapidly and accurately the temperature of ladle, then according to the temperature of ladle, regulate and control the consumption of natural gas.
Application number: 201220534526.4 1 kinds of devices that fast, accurately detect and control baking temperature of steel ladle, disclose to use and comprised PLC, infrared measurement of temperature instrument, hot-wire anemometer and magnetic valve, infrared measurement of temperature instrument, hot-wire anemometer and magnetic valve are connected with PLC respectively, and described magnetic valve is provided with the technical scheme on fuel channel.The core of this scheme is infrared temperature measurement apparatus to be measured to the temperature of ladle outer surface, then calculates the temperature of ladle inside, then according to result of calculation, is controlling fuel feed.The defect of this device is, can not directly measure the temperature of ladle inside, makes result and actual value always have certain error.
Summary of the invention
The present invention, in order to solve in steel-making from the temperature controlled problem of ladle, provides a kind of ladle accurate apparatus for baking.
Technical scheme of the present invention is: the accurate apparatus for baking of a kind of ladle, and structure comprises: ladle and steel ladle cover, self-preheating type burner, fuel gas supply system, air supply system, system for detecting temperature and switch board, fuel gas supply system is connected self-preheating type burner jointly with air supply system;
Described system for detecting temperature comprises infrared radiation thermometer, infrared probe, and infrared probe embeds in steel ladle cover, and infrared radiation thermometer connects infrared probe by optical fiber; Infrared temperature measurement apparatus connects switch board;
Fuel gas supply system comprises gas pipeline, on gas pipeline, be provided with combustion gas branch pipe(tube), gas pipeline serial connection electric control valve I, pneumatic control valve I, manual modulation valve II, flowmeter and hand off valve, electric control valve I, pneumatic control valve I are connected switch board with flowmeter; On combustion gas branch pipe(tube), be connected in series electric control valve II, pneumatic control valve II, manual modulation valve I, electric control valve II is connected switch board with pneumatic control valve II;
Described air supply system comprises air duct, air duct has two, be respectively air duct I, air duct II, air duct I, air duct II connect reversal valve, reversal valve connects air-introduced machine, air blast, and the electric control valve of air-introduced machine is connected switch board with the electric control valve of air blast.
Described self-preheating type burner is also provided with storage heater outward, and described air duct and gas pipeline are connected with storage heater, is connected with bridge motor on steel ladle cover, and bridge motor connects switch board.
Comprehensively the invention has the beneficial effects as follows: 1, infrared probe is housed on steel ladle cover, infrared probe connects switch board by infrared temperature measurement apparatus, infrared probe can Accurate Determining ladle temperature, can penetrate flame and burning gases etc. and disturb the temperature of directly measuring refractory material in ladle, obtain true and reliable temperature reading, increase the control accuracy of combustion gas and amount of supplied air, lower gas consumption, can adjust in time heating according to ladle lining, make heating effect reach best.
2, on gas pipeline, be provided with combustion gas branch pipe(tube), can prevent line clogging, just can not affect production with maintenance midway.
3, gas pipeline is serially connected with electric control valve, pneumatic control valve, manual modulation valve, flowmeter and hand off valve, electric control valve, pneumatic control valve is connected switch board with flowmeter, on combustion gas branch pipe(tube), be connected in series respectively electric control valve, pneumatic control valve, manual modulation valve, electric control valve is connected switch board with pneumatic control valve, on air duct, connect reversal valve, reversal valve connects respectively air-introduced machine, air blast, the electric control valve of air-introduced machine and air blast is connected switch board, increase switch board and can solve the accurately problem of real-time judge ladle baking state of operating personnel, solve the problem that ladle baking real time data can not effectively be preserved and analyze, improve the control of operating personnel to ladle baking state.
4, at the air inlet place of steel ladle cover, be provided with storage heater, storage heater connects air duct and gas pipeline, to reach the object of preheating and abundant blending combustion gas and air.
5, the air duct that the present invention uses has two, adopts two air ducts can control more easily the supply of air capacity.
The present invention is a kind of accurate apparatus for baking for new block, cold repair, dry, turnover and various steel (iron) water pot that is rapidly heated online, and this device has quick heating, strong adaptability, the advantage such as easy to maintenance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
In figure: 1-ladle, 2-steel ladle cover, 3-self-preheating type burner, 4-storage heater, 5-gas pipeline, 6-air duct I, 7-air duct II, 8-infrared probe, 9-infrared temperature measurement apparatus, 10-reversal valve, 11-electric control valve I, 12-pneumatic control valve I, 13-electric control valve II, 14-pneumatic control valve II, 15-combustion gas branch pipe(tube), 16-manual modulation valve I, 17-bridge motor, 18-manual modulation valve II, 19-flowmeter, 20-switch board, 21-hand off valve, 22-electric control valve III, 23-manual modulation valve III, 24-air-introduced machine, 25-manual modulation valve IV, 26-air blast, 27-electric control valve IV.
The specific embodiment
As schematically shown in Figure 1, the accurate apparatus for baking of a kind of ladle, structure comprises: ladle 1 and steel ladle cover 2, self-preheating type burner 3, fuel gas supply system, air supply system, system for detecting temperature and switch board 20, fuel gas supply system is connected self-preheating type burner 3 jointly with air supply system;
Described system for detecting temperature comprises infrared radiation thermometer 9, infrared probe 8, and infrared probe 8 embeds in steel ladle cover 2, and infrared radiation thermometer 9 connects infrared probe 8 by optical fiber; Infrared temperature measurement apparatus 9 connects switch board 20.
Temp measuring system of the present invention: adopt world advanced person's Non-contacting Infrared Thermometer, can penetrate flame and burning gases etc. and disturb the temperature of directly measuring refractory material in ladle, obtain true and reliable temperature reading, accuracy of measurement 0.25%; Employing with the sensor of optical fiber as infrared temperature measurement apparatus, fiber lengths 6m, fibre-optical probe is contained in cantilever tip and does not enter ladle, support is fixed on steel ladle cover by gas purging len as sighting tube.Optical fiber can select import armouring protective jacket to prevent flame calcination, to reduce maintenance and device damage.
Fuel gas supply system comprises gas pipeline 5, on gas pipeline 5, be provided with combustion gas branch pipe(tube) 15, gas pipeline 5 serial connection electric control valve I 11, pneumatic control valve I 12, manual modulation valve II 18, flowmeter 19 and hand off valve 21, electric control valve I 11, pneumatic control valve I 12 and flowmeter 19 are connected switch board 20.On combustion gas branch pipe(tube) 15, be connected in series electric control valve II 13, pneumatic control valve II 14, manual modulation valve I 16, electric control valve II 13 is connected switch board 20 with pneumatic control valve II 14.
Described air supply system comprises air duct, air duct has two, be respectively air duct I 6, air duct II 7, air duct I 6, air duct II 7 connect reversal valve 10, reversal valve 10 connects air-introduced machine 24, air blast 26, and the electric control valve 22 of air-introduced machine 24 is connected switch board 20 with the electric control valve 27 of air blast 26.
Described self-preheating type burner 3 is outer is also provided with storage heater 4, and described air duct and gas pipeline are connected with storage heater 4.
Use the interference that can solve all kinds of factors of temp measuring system after said temperature measurement mechanism and gas-air control device, improve the reliability of observing and controlling; Solve burning and cause fire clay cracky, improve the reliability that ladle is used.
On steel ladle cover 2, be connected with bridge motor 17, bridge motor 17 connects switch board 20, can control better the rotation of steel ladle cover by bridge motor being connected to switch board.
Native system can reduce gas consumption: according to accurate temperature controlling, reach the object that lowers gas consumption.Solution must not be adjusted the problem that adds thermal control in time according to ladle lining, and native system can be adjusted heating in time according to ladle lining, makes heating effect reach best.Solve the problem that ladle baking real time data can not effectively be preserved and analyze, native system is preserved nearly 9 kinds of ladle baking data, and not only system itself possesses data analysis and processing capacity, can also accurately for technologist provides, analyze and data processed result.Solve the accurately problem of real-time judge ladle baking state of operating personnel, improve the control of operating personnel to ladle baking state.In conjunction with coal gas feature, easily result in blockage, in gaspipe line design, adopt bypass so that maintenance midway does not affect production.
Described apparatus for baking machinery control section is mainly comprised of frame, rotating mechanism, steel ladle cover, combustion air heating system, gas rotating bindiny mechanism, blower fan, hoist engine, burning dispensing and electric-control system.
Claims (3)
1. the accurate apparatus for baking of a ladle, it is characterized in that: structure comprises: ladle (1) and steel ladle cover (2), self-preheating type burner (3), fuel gas supply system, air supply system, system for detecting temperature and switch board (20), fuel gas supply system is connected self-preheating type burner (3) jointly with air supply system;
Described system for detecting temperature comprises infrared radiation thermometer (9), infrared probe (8), and infrared probe (8) embeds in steel ladle cover (2), and infrared radiation thermometer (9) connects infrared probe (8) by optical fiber; Infrared temperature measurement apparatus (9) connects switch board (20);
Fuel gas supply system comprises gas pipeline (5), on gas pipeline (5), be provided with combustion gas branch pipe(tube) (15), gas pipeline (5) serial connection electric control valve I (11), pneumatic control valve I (12), manual modulation valve II (18), flowmeter (19) and hand off valve (21), electric control valve I (11), pneumatic control valve I (12) is connected switch board (20) with flowmeter (19), the upper serial connection of combustion gas branch pipe(tube) (15) electric control valve II (13), pneumatic control valve II (14), manual modulation valve I (16), electric control valve II (13) is connected switch board (20) with pneumatic control valve II (14),
Described air supply system comprises air duct, air duct has two, be respectively air duct I (6), air duct II (7), air duct I (6), air duct II (7) connect reversal valve (10), reversal valve (10) connects air-introduced machine (24), air blast (26), and the electric control valve (22) of air-introduced machine (24) and the electric control valve (27) of air blast (26) are connected switch board (20).
2. the accurate apparatus for baking of ladle according to claim 1, is characterized in that: described self-preheating type burner (3) is outer is also provided with storage heater (4), and described air duct and gas pipeline are connected with storage heater (4).
3. the accurate apparatus for baking of ladle according to claim 1, is characterized in that: on steel ladle cover (2), be connected with bridge motor (17), bridge motor (17) connects switch board (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410207670.0A CN103978194B (en) | 2014-05-16 | 2014-05-16 | Ladle precision apparatus for baking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410207670.0A CN103978194B (en) | 2014-05-16 | 2014-05-16 | Ladle precision apparatus for baking |
Publications (2)
| Publication Number | Publication Date |
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| CN103978194A true CN103978194A (en) | 2014-08-13 |
| CN103978194B CN103978194B (en) | 2016-09-07 |
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| CN201410207670.0A Expired - Fee Related CN103978194B (en) | 2014-05-16 | 2014-05-16 | Ladle precision apparatus for baking |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975399A (en) * | 2014-10-23 | 2015-10-14 | 铜陵梧桐树农业发展有限公司 | Device used for purifying zirconia fibers |
| CN107255648A (en) * | 2017-05-23 | 2017-10-17 | 闫靖媛 | A kind of fire-protection ring fire resistance experimental rig |
| CN107855509A (en) * | 2016-09-22 | 2018-03-30 | 宝山钢铁股份有限公司 | Temperature measurement on-line control device and method in ladle baking |
| CN108723345A (en) * | 2017-04-24 | 2018-11-02 | 宝山钢铁股份有限公司 | A kind of continuous casting production baking quality monitoring device and its control method |
| CN110926619A (en) * | 2019-12-17 | 2020-03-27 | 湖北理工学院 | Continuous temperature measurement method for temperature of molten steel in steel ladle |
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| EP0092006A1 (en) * | 1982-04-21 | 1983-10-26 | Bloom Engineering Company, Inc., | A ladle preheat station and a method of measuring the temperature of a ladle therein |
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| CN203936369U (en) * | 2014-05-16 | 2014-11-12 | 山西大杨创纪科技股份有限公司 | The accurate apparatus for baking of ladle |
-
2014
- 2014-05-16 CN CN201410207670.0A patent/CN103978194B/en not_active Expired - Fee Related
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0092006A1 (en) * | 1982-04-21 | 1983-10-26 | Bloom Engineering Company, Inc., | A ladle preheat station and a method of measuring the temperature of a ladle therein |
| US5579821A (en) * | 1995-02-27 | 1996-12-03 | Vander Jagt; Adrian D. | Thermally efficient portable melting furnace |
| US20120146267A1 (en) * | 2007-06-11 | 2012-06-14 | Nucor Corporation | Preheaters for preheating steelmaking ladles |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975399A (en) * | 2014-10-23 | 2015-10-14 | 铜陵梧桐树农业发展有限公司 | Device used for purifying zirconia fibers |
| CN107855509A (en) * | 2016-09-22 | 2018-03-30 | 宝山钢铁股份有限公司 | Temperature measurement on-line control device and method in ladle baking |
| CN108723345A (en) * | 2017-04-24 | 2018-11-02 | 宝山钢铁股份有限公司 | A kind of continuous casting production baking quality monitoring device and its control method |
| CN107255648A (en) * | 2017-05-23 | 2017-10-17 | 闫靖媛 | A kind of fire-protection ring fire resistance experimental rig |
| CN110926619A (en) * | 2019-12-17 | 2020-03-27 | 湖北理工学院 | Continuous temperature measurement method for temperature of molten steel in steel ladle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103978194B (en) | 2016-09-07 |
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Granted publication date: 20160907 |