CN102534177B - Continuous annealing unit and circulating temperature control device for aging section of continuous annealing unit - Google Patents
Continuous annealing unit and circulating temperature control device for aging section of continuous annealing unit Download PDFInfo
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- CN102534177B CN102534177B CN201210052658.8A CN201210052658A CN102534177B CN 102534177 B CN102534177 B CN 102534177B CN 201210052658 A CN201210052658 A CN 201210052658A CN 102534177 B CN102534177 B CN 102534177B
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- control device
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- loop temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a circulating temperature control device for the aging section of a continuous annealing unit. The circulating temperature control device comprises a pipeline, a valve, a heat exchanger, a first expansion joint and a blower, wherein one end of the pipeline is communicated with the bottom of a firebox on the aging section; the other end of the pipeline is communicated with the top of the firebox on the aging section; the valve, the heat exchanger, the first expansion joint and the blower are arranged on the pipeline in sequence; the valve is adjacent to the bottom of the valve firebox on the aging section; and the heat exchanger is used for controlling the temperature of a gaseous medium in the aging section of the continuous annealing unit in a heat exchange manner. According to the requirements of production, the temperature in the firebox can be adjusted and controlled fast, and the consumption of the gaseous medium is greatly reduced through the cyclic utilization of the gaseous medium. Moreover, the temperature of the gaseous medium can be controlled fast and effectively; the production of transitional materials is effectively reduced; the production rhythm is accelerated; and the circulating temperature control device has a wide potentiality in the technical popularization of an annealing furnace in the continuous annealing unit.
Description
Technical field
The present invention relates to the equipment for Heating Processing field of steel rolling, more particularly, relate to a kind of company and move back the loop temperature-control device of unit aging section and comprise that the company of this loop temperature-control device moves back unit.
Background technology
Even moving back in unit, annealing furnace is heat-treated band steel.Annealing furnace comprises preheating section, heating zone, soaking zone, slow cooling section, fast cold section, aging section (hereinafter referred to as OAS section), cold section and watch-quench tank eventually, and the major function of OAS section is exactly at N
2, H
2under gaseous media, insulation belt steel certain hour, accelerates the timeliness efficiency with steel at a certain temperature, makes to be with steel to reach needed internal mechanical performance.
At band steel, carry out in ageing treatment process, the temperature in OAS section burner hearth is the key technical index of ageing treatment, and according to different steel grades, the temperature in OAS section burner hearth will regulate in real time.In the prior art, the temperature in OAS section burner hearth is to heat by electric radiant tube or resistive band, by supplementing the N under room temperature
2, H
2deng gaseous media, carry out cooling, the N that burner hearth is unnecessary
2, H
2self-draining valve Deng gaseous media by furnace roof emits.
The problem of prior art comprises: supplement N
2, H
2pipeline Deng gaseous media is generally designed to Φ 50mm latus rectum, and the magnitude of recruitment of its unit time is limited, and has extended supplementary N
2, H
2deng the needed time of gaseous media.This cannot be by selecting to solve the problems referred to above compared with the pipeline of Large Diameter Pipeline, because caliber value is crossed conference and is caused the fluctuation of burner hearth thermal inertia, impact the burner hearth thermal energy balance and the pressure equilibrium that are connected with OAS section, thus cause the time of producing transitional product to grow, the defect such as the quantitative change of the waster of generation is large.In addition, if supplementary N
2, H
2deng gaseous media, naturally discharged, this,, except causing the pollution of environment, also causes N
2, H
2deng the free consumption of gaseous media, the energy consumption cost of OAS section operation is increased.
Summary of the invention
The object of the present invention is to provide a set of reliable and practical company to move back the loop temperature-control device of unit aging section, is N in OAS section burner hearth by newly-increased loop temperature-control device
2, H
2reduction Deng gas medium temperature increases a set of conditioning equipment, so that the technology pattern of whole OAS section and equipment configuration more can meet actual production demand.
To achieve these goals, the loop temperature-control device that an aspect of of the present present invention provides a kind of company to move back unit aging section, described loop temperature-control device comprises pipeline, valve, heat exchanger, the first expansion joint and blower fan, wherein, one end of described pipeline is communicated with the bottom of aging section burner hearth, and the other end of described pipeline is communicated with the top of aging section burner hearth; Described valve, heat exchanger, the first expansion joint and blower fan are set in sequence on described pipeline, and the bottom of described valve and aging section burner hearth is adjacent; Described heat exchanger is controlled and is connected the temperature of moving back the gaseous media in unit aging section by the mode of heat exchange.
According to company of the present invention, move back the loop temperature-control device of unit aging section, described loop temperature-control device also comprises the second expansion joint, and described the second expansion joint is arranged on described pipeline and between blower fan and the other end of described pipeline.
According to company of the present invention, move back the loop temperature-control device of unit aging section, described the first expansion joint, the second expansion joint are bellows structure.
According to company of the present invention, move back the loop temperature-control device of unit aging section, described the first expansion joint, the second expansion joint adopt flange connection mode to install.
According to company of the present invention, move back the loop temperature-control device of unit aging section, described blower fan is airtight blower fan, and the blanket gas of described airtight blower fan is nitrogen.
The loop temperature-control device that moves back unit aging section according to company of the present invention, described blower fan is connected with motor by shaft coupling, thus the running of described driven by motor blower fan sucks or extrudes the gaseous media in aging section burner hearth.
According to company of the present invention, move back the loop temperature-control device of unit aging section, described motor is change speed motor.
According to company of the present invention, move back the loop temperature-control device of unit aging section, described loop temperature-control device also comprises supporting with it mathematical control model.
An aspect of of the present present invention provides a kind of company to move back unit, described company moves back unit and comprises annealing furnace, described annealing furnace comprises preheating section, heating zone, soaking zone, slow cooling section, fast cold section, aging section, cold section and watch-quench tank eventually, and described aging section is provided with above-mentioned loop temperature-control device.
According to company of the present invention, move back unit, the quantity of described loop temperature-control device be a set of or two cover more than.
Compared with prior art, the present invention can be according to Production requirement, rapidly the temperature of burner hearth is regulated to control, by the recycle of gaseous media being reduced greatly to the consumption of shielding gas, also very little on furnace pressure and thermal inertia impact, the reflection sensitivity of can lift set product switching, and improve unit lumber recovery and quality product; In addition, the temperature of gaseous media is controlled fast and effectively, can effectively be reduced the production of Transition Materials, faster production rhythm, possesses and is even moving back the great potential that unit annealing furnace makes technological knowledge popular.
Accompanying drawing explanation
By the description to exemplary embodiment of the present invention below in conjunction with accompanying drawing, above and other object of the present invention and feature will become apparent, wherein:
Fig. 1 is the schematic diagram that connects according to an exemplary embodiment of the present invention the loop temperature-control device that moves back unit aging section.
Main description of reference numerals:
1-aging section burner hearth, 2-valve, 3-heat exchanger, 4-the first expansion joint, 5-blower fan, 6-the second expansion joint, 7-pipeline, 8-shaft coupling, 9-motor.
Embodiment
Below, with reference to accompanying drawing, describe exemplary embodiment of the present invention in detail.The present invention utilizes from aging section burner hearth bottom extract heat gaseous media, then toward aging section roof of the furnace, injects the pattern of cold air medium, makes full use of the characteristic that cold air medium sinks, and makes rapidly the atmosphere temperature in aging section burner hearth reach required temperature condition.
Fig. 1 is the schematic diagram that connects according to an exemplary embodiment of the present invention the loop temperature-control device that moves back unit aging section, and the arrow in figure represents flow direction.The loop temperature-control device that unit aging section moves back in company according to the present invention comprises pipeline 7, valve 2, heat exchanger 3, the first expansion joint 4 and blower fan 5, one end of pipeline 7 is communicated with the bottom of aging section burner hearth 1, the other end of pipeline 7 is communicated with the top of aging section burner hearth 1, valve 2, heat exchanger 3, the first expansion joint 4 and blower fan 5 are set in sequence on pipeline 7, and valve 2 is adjacent with the bottom of aging section burner hearth 1, heat exchanger 3 is controlled and is connected the temperature of moving back the gaseous media in unit aging section by the mode of heat exchange, loop temperature-control device and aging section burner hearth 1 form the closed circuit passage of gaseous media.
Wherein, above-mentioned gas medium is specially the shielding gas such as nitrogen or hydrogen.
First each parts that the loop temperature-control device of unit aging section moved back in company of the present invention are elaborated.
Valve 2 is for realizing the control to gaseous media under loop temperature-control device busy/non-operating mode.Preferably, valve 2 is flap valve.Under operating mode, valve 2 is opened, and can make the hot gas medium in aging section burner hearth 1 enter valve 2 and then enter loop temperature-control device; Under non-operating mode, valve 2 is closed, and can avoid gaseous media and loop temperature-control device generation natural convection in aging section burner hearth 1, and avoid affecting the temperature and pressure in aging section burner hearth 1.
Heat exchanger 3 is by heat exchange method, to realize loop temperature-control device to work to even moving back the temperature control of the gaseous media in unit aging section.In heat exchanger 3, be marked with controllable recirculated cooling water, when hot gas medium enters after heat exchanger 3 via valve 2, recirculated cooling water and hot gas medium carry out thermal exchange, thereby hot gas medium is reduced to temperature required and is sent.Recirculated cooling water only just injects when loop temperature-control device is worked, and non-operating mode is next to stop for recirculated cooling water.
The first expansion joint 4, for making up the rising-heat contracting-cold amount of valve 2 and heat exchanger 3, is avoided blower fan 5 to produce pressure.Particularly, the first expansion joint 4 is bellows structure.For the ease of maintenance and the maintenance of expansion joint, the first expansion joint 4 preferably adopts flange connection mode to install, and by flange, is connected with pipeline 7.
Preferably, loop temperature-control device of the present invention also can comprise that the second expansion joint 6, the second expansion joints 6 are arranged on pipeline 7 and between blower fan 5 and the other end of pipeline 7.The second expansion joint 6 is also for making up the amount of expanding with heat and contract with cold of pipeline 7, avoids blower fan 5 to produce pressure, specifically can select whether to arrange according to practical situation.Consistent with the first expansion joint 5, the second expansion joint 6 is also bellows structure, and adopts flange connection mode to install.
Blower fan 5, as the propulsion source of loop temperature-control device, produces negative pressure in its ingress during operation, the hot gas medium of aging section burner hearth 1 bottom is sucked to loop temperature-control device and be pressed into aging section burner hearth 1 top after cooling again.Blower fan 5 is connected with motor 9 by shaft coupling 8, thereby motor 9 drives blower fan, 5 runnings suck or extrude the gaseous media in aging section burner hearth.Motor 9 is preferably change speed motor, to regulate according to the actual requirements the flow of blower fan 5.Blower fan 5 is preferably airtight blower fan, and to prevent that ambient atmos from entering blower fan 5, the blanket gas of airtight blower fan is nitrogen.
For the ease of real-time controlled circulation temperature regulating device, can also set up the mathematical control model with loop temperature-control matched with devices,, by thermal energy balance Formula mathematical model, according to demand, the gas medium temperature in aging section burner hearth 1 is controlled.
Particularly, connect and to move back unit and comprise annealing furnace, annealing furnace comprises preheating section, heating zone, soaking zone, slow cooling section, fast cold section, aging section, cold section and watch-quench tank eventually, and loop temperature-control device of the present invention is arranged at and connects the aging section that moves back unit.This loop temperature-control device is the supplementary regulating measure of moving back unit aging section burner hearth as connecting, and the volume of aging section section burner hearth 1 is very large, variation along with product specification, temperature in aging section section burner hearth 1 needs to adjust in real time, the rising of temperature can be heated by electric radiant tube or resistive band, and the reduction of temperature needs to realize by newly-installed loop temperature-control device.Therefore, can be as required connect move back on unit aging section, arrange a set of or more than two covers above-mentioned loop temperature-control device to realize better regulating effect.
Below in conjunction with the company of exemplary embodiment of the present, move back the loop temperature-control device of unit aging section and describe its mode of operation.
During temperature in need to regulating aging section burner hearth 1, open motor 9 and also drive blower fan 5 runnings, heat exchanger 3 is injected recirculated cooling waters simultaneously.Under the suction of blower fan 5, the hot gas medium of aging section burner hearth 1 bottom enters into heat exchanger 3 by valve 2, and the recirculated cooling water in hot gas medium and heat exchanger 3 carries out heat exchange, and hot gas medium is cooled thus.The gaseous media being cooled enters into the first expansion joint 4 and blower fan 5, and under the driving effect of blower fan 5, enter the second expansion joint 6, by pipeline 7, get back to afterwards the top of aging section burner hearth 1, the gaseous media being cooled sinks and fully mixes with hot gas medium in aging section burner hearth 1, effectively reduces thus the temperature in aging section burner hearth 1.So far complete the closed cycle of gaseous media in aging section burner hearth 1 and loop temperature-control device, by the repeatedly above-mentioned closed cycle of gaseous media, can reach the object of temperature in adjusting aging section burner hearth 1.The loop temperature-control device that unit aging section moves back in company according to the present invention can make the gaseous media in aging section burner hearth 1 circulate constantly, does not substantially need to make up new gaseous media, thereby greatly reduces energy consumption.
Above technical characterictic has formed exemplary embodiment of the present invention, and it has stronger adaptability and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.
In sum, utilize company of the present invention to move back the loop temperature-control device of unit aging section, can to the temperature of aging section burner hearth, regulate control rapidly according to Production requirement; Closed cycle by gaseous media in aging section burner hearth, greatly reduces energy consumption; The temperature of gaseous media is controlled fast and effectively, can effectively be reduced the production of Transition Materials, faster production rhythm, possesses and is even moving back the great potential that unit annealing furnace makes technological knowledge popular.
Although specifically described of the present invention for connecting the loop temperature-control device that moves back unit aging section with reference to embodiments of the invention, but those skilled in the art will be appreciated that, without departing from the spirit and scope of the present invention, can make various forms of changes to embodiment.
Claims (9)
1. a loop temperature-control device for unit aging section moves back in company, it is characterized in that, described loop temperature-control device comprises pipeline, valve, heat exchanger, the first expansion joint and blower fan, wherein,
One end of described pipeline is communicated with the bottom of aging section burner hearth, and the other end of described pipeline is communicated with the top of aging section burner hearth;
Described valve, heat exchanger, the first expansion joint and blower fan are set in sequence on described pipeline, and the bottom of described valve and aging section burner hearth is adjacent;
Described heat exchanger is controlled and is connected the temperature of moving back the gaseous media in unit aging section by the mode of heat exchange;
Wherein, the flow direction of described gaseous media is for to flow to the top of aging section burner hearth from the bottom of aging section burner hearth via described pipeline, and described gaseous media is N
2, H
2, described loop temperature-control device also comprises the second expansion joint, described the second expansion joint is arranged on described pipeline and between blower fan and the other end of described pipeline.
2. the loop temperature-control device that moves back unit aging section for company according to claim 1, is characterized in that, described the first expansion joint, the second expansion joint are bellows structure.
3. the loop temperature-control device that moves back unit aging section for company according to claim 1, is characterized in that, described the first expansion joint, the second expansion joint adopt flange connection mode to install.
4. the loop temperature-control device that moves back unit aging section for company according to claim 1, is characterized in that, described blower fan is airtight blower fan, and the blanket gas of described airtight blower fan is nitrogen.
5. the loop temperature-control device that moves back unit aging section for company according to claim 1, is characterized in that, described blower fan is connected with motor by shaft coupling, thereby the running of described driven by motor blower fan sucks or extrude the gaseous media in aging section burner hearth.
6. the loop temperature-control device that moves back unit aging section for company according to claim 5, is characterized in that, described motor is change speed motor.
7. the loop temperature-control device that moves back unit aging section for company according to claim 1, is characterized in that, described loop temperature-control device also comprises supporting with it mathematical control model.
8. unit moves back in a company, described company moves back unit and comprises annealing furnace, described annealing furnace comprises preheating section, heating zone, soaking zone, slow cooling section, fast cold section, aging section, cold section and watch-quench tank eventually, it is characterized in that, described aging section is provided with loop temperature-control device as claimed in any of claims 1 to 7 in one of claims.
9. unit moves back in company according to claim 8, it is characterized in that, the quantity of described loop temperature-control device be a set of or two cover more than.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210052658.8A CN102534177B (en) | 2012-03-02 | 2012-03-02 | Continuous annealing unit and circulating temperature control device for aging section of continuous annealing unit |
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|---|---|---|---|
| CN201210052658.8A CN102534177B (en) | 2012-03-02 | 2012-03-02 | Continuous annealing unit and circulating temperature control device for aging section of continuous annealing unit |
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| CN102534177B true CN102534177B (en) | 2014-02-05 |
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| CN106048154A (en) * | 2016-07-13 | 2016-10-26 | 浙江晨光电缆股份有限公司 | Copper material annealing furnace |
| CN106766942B (en) * | 2016-12-28 | 2023-10-03 | 洛阳八佳电气科技股份有限公司 | Special internal circulation rapid cooling device and method for high-temperature furnace |
| CN108384930B (en) * | 2018-04-28 | 2024-02-23 | 东莞市润华铝业有限公司 | Aging treatment device for radiator aluminum material |
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| JPS5818401B2 (en) * | 1978-02-27 | 1983-04-13 | 住友金属工業株式会社 | Continuous heating furnace control method |
| JP2005226157A (en) * | 2004-01-14 | 2005-08-25 | Nippon Steel Corp | Method and device for controlling furnace temperature of continuous annealing furnace |
| CN101182593A (en) * | 2007-12-07 | 2008-05-21 | 东北大学 | Gas stove outer circulation cooling method of double chamber atmosphere pressure hardening furnace and cooling system thereof |
| CN201144255Y (en) * | 2007-12-14 | 2008-11-05 | 李传斌 | Circulation controllable wind cooling device for isothermal normalizing furnace |
| CN201512558U (en) * | 2009-07-29 | 2010-06-23 | 南京年达炉业科技有限公司 | Cooling device of nitrogen protection annealing furnace |
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