CN201760452U - Ultrafast cooling system for hot tandem rolling strip steel and medium plate production lines - Google Patents

Ultrafast cooling system for hot tandem rolling strip steel and medium plate production lines Download PDF

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Publication number
CN201760452U
CN201760452U CN2010202846163U CN201020284616U CN201760452U CN 201760452 U CN201760452 U CN 201760452U CN 2010202846163 U CN2010202846163 U CN 2010202846163U CN 201020284616 U CN201020284616 U CN 201020284616U CN 201760452 U CN201760452 U CN 201760452U
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China
Prior art keywords
cooling water
water pipeline
control valve
low pressure
pressure cooling
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Expired - Fee Related
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CN2010202846163U
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Chinese (zh)
Inventor
刘勇
余大宏
李卫平
罗击
佘广夫
张中平
孙良
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Pangang Group Steel Vanadium and Titanium Co Ltd
Pangang Group Panzhihua Steel and Vanadium Co Ltd
Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
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Pangang Group Steel Vanadium and Titanium Co Ltd
Pangang Group Panzhihua Steel and Vanadium Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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Abstract

The utility model relates to the field of hot rolling and provides an ultrafast cooling system for hot tandem rolling strip steel and medium plate production lines, which comprises an upper collecting pipe, a lower collecting pipe, a cooling water pipeline with the water pressure being below 1.0MPa, a cooling water pipeline control valve, an upper collecting pipe tipping mechanism, a control system, and a low-pressure cooling water pipeline for maintaining the flowing state of the cooling water in the lower collecting pipe and the upper collecting pipe, wherein the water pressure of the low-pressure cooling water pipeline is 0.2 to 0.5MPa; a control valve of the low-pressure cooling water pipeline is connected with the control system; the open-close state of the control valve of the low-pressure cooling water pipeline is opposite to the open-close state of a control valve of the cooling water pipeline through the control of the control system; and the upper collecting pipe tipping mechanism is linked with a low-pressure cooling water control valve. The cooling system realizes the effective cooling on the collecting pipes through the low-pressure cooling water during intermission in a use process or when the collecting pipes are not in use, avoids the scale formation and the stoppage of a nozzle as well as the deformation and the corrosion of the collecting pipes, can ensure the normal and stable use and reduce the maintenance cost of the equipment and is suitable for the hot tandem rolling strip steel and medium plate production lines.

Description

The ultrafast cooling system that is used for hot-continuous-rolling strip steel and Heavy Plate Production line
Technical field
The utility model relates to the hot rolling field, especially a kind of ultrafast cooling system that is used for hot-continuous-rolling strip steel and Heavy Plate Production line.
Background technology
Ultrafast cooling system be a kind of the online layouts of production line such as hot-continuous-rolling strip steel, cut deal to rolled products carry out in short-term, the accurate device of control of cooling and temperature apace, maximum cooling velocity can reach 400 ℃/s.Ultrafast refrigeration technique effectively improves the performance of rolled piece, the microcosmic phase-change organization form of control rolled piece by the cooling of the control after rolling, realizes exploitation and production high-strength, high added value iron and steel new product.Adopt the product of ultrafast refrigeration technique production have with low cost, carrying capacity of environment is little, be easy to the characteristics of regeneration etc. " ecological environment material nd ", meets the strategy of sustainable development requirement of steel and iron industry.Therefore, ultrafast refrigeration technique just is being subjected to extensive concern both domestic and external, progressively obtains commercial Application at cut deal, SPHC production line, and the performance want emphatically effect, created huge benefit.
Ultrafast cooling system generally includes water system, upper header, lower collector pipe, collector mounting bracket, upper header tilting mechanism, cooling water pipeline, control valve group and relevant detection instrument and control panel.Wherein upper and lower collector is the key components of ultrafast cooling system, and it is directly sprayed water and realizes band steel, plate are cooled off fast, and water carries out long-range supply by water system by cooling water pipeline.Upper header, lower collector pipe be the water tank shape for being processed into by sheet metal all, and itself and rolled piece facing surfaces are arranged nozzle, wherein upper header apart from rolled piece upper surface distance less than 700mm, lower collector pipe be installed in rollgang the gap in and apart from the rolled piece lower surface apart from less than 50mm.When ultrafast cooling system came into operation, the collector water spray was the service intermittent mode, promptly a band steel, plate cooling was stopped water spray after finishing, and intermittently a period of time is cooled off next piece band steel, plate again, and the intermittent time is determined by mill milling rhythm.Simultaneously, in steel mill's production application process, ultrafast cooling system only comes into operation to the part kind, and ultrafast cooling system is in off working state when not coming into operation, and water system does not supply water to collector, and upper header overturns away from the rolled piece upper surface by tilting mechanism.
The temperature of rolled piece is generally 800~1200 ℃, and therefore, upper header, no matter lower collector pipe comes into operation does not still come into operation, and it is under the very high temperature environment always, bears a large amount of heat radiations.Under the come into operation intermittence or the situation that do not come into operation, anhydrous in the upper header, the water of lower collector pipe remnants is in not flow regime, under a large amount of thermal-radiating conditions, to directly cause a small amount of surplus water in the collector to seethe with excitement in short-term, evaporation, and water for industrial use has certain rigidity, and then will cause spray nozzle encrustation, the discharge characteristic that has influence on nozzle that wherein degree is light, and degree serious will directly cause spray nozzle clogging, cause the control accuracy of ultrafast cooling system, cooling effectiveness significantly reduces, and has to frequently change nozzle, not only have influence on the technologic mechanics performance of product, and have influence on the operating rate of production line, increase cost.In addition, collector is subjected to the alternately heat radiation of variation, produces alternate stress, for welded collector, the distortion of fouling, burn into appears in collector inside, and also there is the risk of cracking in weld seam, has quickened the destruction of equipment and has reduced operation stability of equipment and security.
The utility model content
Technical problem to be solved in the utility model provides a kind ofly can avoid spray nozzle encrustation, obstruction, avoid collector distortion, corrosion, can guarantee the normal stable ultrafast cooling system that is used for hot-continuous-rolling strip steel and Heavy Plate Production line that uses and reduce the maintenance cost of equipment.
The technical scheme that its technical problem that solves the utility model adopts is: the ultrafast cooling system that is used for hot-continuous-rolling strip steel and Heavy Plate Production line, comprise upper header, lower collector pipe, hydraulic pressure cooling water pipeline, cooling water pipeline control valve, upper header tilting mechanism, the control system below 1.0MPa, being provided with and keeping lower collector pipe, the interior flow of cooling water state of upper header and hydraulic pressure is the low pressure cooling water pipeline of 0.2~0.5MPa, and low pressure cooling water pipeline control valve links to each other with control system; By the control of control system, low pressure cooling water pipeline control valve is opposite with cooling water pipeline control valve on off state, and described upper header tilting mechanism and the interlock of low pressure cooling water control valve.
The beneficial effects of the utility model are: low pressure cooling water pipeline control valve is opposite with cooling water pipeline control valve on off state, has guaranteed both unlatchings of selecting.When coming into operation intermittently or not coming into operation, introduce the low-pressure cooling water in the collector of ultrafast cooling system by the low pressure cooling water pipeline, the low pressure cooling water is through collector, nozzle flows out, cooling water pressure is low can not to be injected into the rolled piece surface, and the upper header tilting mechanism is by control system and the interlock of low pressure cooling water control valve, upper header is in upwards rollover conditions when not coming into operation, therefore realized when coming into operation intermittently or not coming into operation effective cooling by the low pressure cooling water to collector, avoid spray nozzle encrustation, stop up, avoid the collector distortion, corrosion can guarantee the normal stable maintenance cost of using and reduce equipment.
As a kind of preferred version, described low pressure cooling water pipeline control valve, cooling water pipeline control valve are Pneumatic butterfly valve.
Further, in order to prevent when ultrafast cooling system comes into operation, the higher quick cooling water of band steel of pressure is scurried in the low pressure cooling water pipeline, and described low pressure cooling water pipeline control valve is with being respectively arranged with check-valves on the low pressure cooling water pipeline between upper header and the lower collector pipe.
In order to control the flow of convenient control low pressure cooling water, safeguard for convenience that simultaneously described low pressure cooling water pipeline is provided with hand stop valve.
As a kind of preferred version, described hand stop valve is a ball valve.
Description of drawings
Fig. 1 is a pipeline connection diagram of the present utility model.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, the ultrafast cooling system that is used for hot-continuous-rolling strip steel and Heavy Plate Production line of the present utility model, comprise upper header 1, lower collector pipe 2, hydraulic pressure cooling water pipeline 6, cooling water pipeline control valve 8, upper header tilting mechanism, the control system below 1.0MPa, being provided with and keeping lower collector pipe 1, upper header 2 interior flow of cooling water states and hydraulic pressure is the low pressure cooling water pipeline 7 of 0.2~0.5MPa, and low pressure cooling water pipeline control valve 3 links to each other with control system; By the control of control system, low pressure cooling water pipeline control valve 3 is opposite with cooling water pipeline control valve 8 on off states, and described upper header tilting mechanism and 3 interlocks of low pressure cooling water control valve.
Low pressure cooling water pipeline control valve 3 is opposite with cooling water pipeline control valve 8 on off states, has guaranteed both unlatchings of selecting.When coming into operation intermittently or not coming into operation, the low-pressure cooling water is introduced the upper header 1 of ultrafast cooling system by low pressure cooling water pipeline 7, in the lower collector pipe 2, the low pressure cooling water is through upper header 1, the nozzle of lower collector pipe 2 flows out, low rolled piece 9 surfaces that can not be injected into of cooling water pressure, and the upper header tilting mechanism is by control system and 3 interlocks of low pressure cooling water control valve, upper header 1 is in upwards rollover conditions when not coming into operation, effectively avoided when ultrafast cooling system does not come into operation the low pressure cooling water to the interference of rolling control, therefore realized when coming into operation intermittently or not coming into operation upper header 1 by the low pressure cooling water, effective cooling of lower collector pipe 2, avoid spray nozzle encrustation, stop up, avoid upper header 1 and lower collector pipe 2 distortion, corrosion can guarantee the normal stable maintenance cost of using and reduce equipment.
Above-mentioned low pressure cooling water, its low pressure is the quick cooling water hydraulic pressure of ultrafast relatively cooling system when normally coming into operation, make the low pressure cooling water in guaranteeing upper header 1 and lower collector pipe 2, avoided in flow of cooling water state and the cooling thereof the low pressure cooling water spray, spatter rolled piece impacted.Concrete, cooling water carries out long-range supply by system fast, and according to the difference of temperature control needs and difference, as mentioned above, below 1.0MPa, the hydraulic pressure of low pressure cooling water is generally 0.2~0.5MPa to hydraulic pressure accordingly usually.In order to simplify configuration, the low-pressure cooling circulating water is the 0.3MPa recirculated cooling water, and the steel rolling mill workshop all possesses.
Low pressure cooling water pipeline control valve 3, cooling water pipeline control valve 8 can be arbitrarily can be by the stop valve of control system control, and concrete, described low pressure cooling water pipeline control valve 3, cooling water pipeline control valve 8 are Pneumatic butterfly valve.
Further, in order to prevent when ultrafast cooling system comes into operation, the higher quick cooling water of band steel of pressure is scurried in the low pressure cooling water pipeline 7, and described low pressure cooling water pipeline control valve 3 is with being respectively arranged with check-valves 4 on the low pressure cooling water pipeline 7 between upper header 1 and the lower collector pipe 2.
In order to control the flow of convenient control low pressure cooling water, safeguard for convenience that simultaneously described low pressure cooling water pipeline 3 is provided with hand stop valve 5.Concrete, described hand stop valve 5 is a ball valve.

Claims (5)

1. the ultrafast cooling system that is used for hot-continuous-rolling strip steel and Heavy Plate Production line, comprise upper header (1), lower collector pipe (2), hydraulic pressure cooling water pipeline (6), cooling water pipeline control valve (8), upper header tilting mechanism, the control system below 1.0MPa, it is characterized in that: being provided with and keeping lower collector pipe (1), the interior flow of cooling water state of upper header (2) and hydraulic pressure is the low pressure cooling water pipeline (7) of 0.2~0.5MPa, and low pressure cooling water pipeline control valve (3) links to each other with control system; By the control of control system, low pressure cooling water pipeline control valve (3) is opposite with cooling water pipeline control valve (8) on off state, and described upper header tilting mechanism and low pressure cooling water control valve (3) interlock.
2. the ultrafast cooling system that is used for hot-continuous-rolling strip steel and Heavy Plate Production line as claimed in claim 1 is characterized in that: described low pressure cooling water pipeline control valve (3), cooling water pipeline control valve (8) are Pneumatic butterfly valve.
3. the ultrafast cooling system that is used for hot-continuous-rolling strip steel and Heavy Plate Production line as claimed in claim 1 is characterized in that: be respectively arranged with check-valves (4) on the low pressure cooling water pipeline (7) between same upper header of described low pressure cooling water pipeline control valve (3) (1) and the lower collector pipe (2).
4. as claim 1 or the 3 described ultrafast cooling systems that are used for hot-continuous-rolling strip steel and Heavy Plate Production line, it is characterized in that: described low pressure cooling water pipeline (3) is provided with hand stop valve (5).
5. the ultrafast cooling system that is used for hot-continuous-rolling strip steel and Heavy Plate Production line as claimed in claim 4 is characterized in that: described hand stop valve (5) is a ball valve.
CN2010202846163U 2010-08-06 2010-08-06 Ultrafast cooling system for hot tandem rolling strip steel and medium plate production lines Expired - Fee Related CN201760452U (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102343372A (en) * 2011-10-20 2012-02-08 秦皇岛首秦金属材料有限公司 Production method for rapidly cooling medium plate after rolling
CN102426462A (en) * 2011-11-30 2012-04-25 东北大学 Method for accelerating stabilizing speed of ultra-fast cold variable frequency pump water pressure system
CN102513367A (en) * 2011-11-30 2012-06-27 东北大学 Detecting protection device for rolling plate warped head
CN103978051A (en) * 2014-05-13 2014-08-13 东北大学 Water supply system of medium plate ultra fast cooling equipment and control method
CN106311778A (en) * 2016-08-30 2017-01-11 北京首钢自动化信息技术有限公司 Method for online automatic maintaining of hot-rolled laminar cooling manifolds
CN106391734A (en) * 2016-08-17 2017-02-15 钢铁研究总院 Sectional step type cooling device for hot rolling of high-strength steel bars
CN109647914A (en) * 2019-01-24 2019-04-19 燕山大学 Hot rolled strip liquid nitrogen ultra-fast cooling device
CN110508625A (en) * 2019-10-17 2019-11-29 东北大学 On-line Control cooling device and method for middle small-caliber hot rolling seamless steel
CN110523787A (en) * 2019-09-30 2019-12-03 攀钢集团攀枝花钢铁研究院有限公司 A kind of hot continuous rolling steel centre base ultra-rapid cooling method
CN113319136A (en) * 2021-05-18 2021-08-31 武汉钢铁有限公司 Multistage laminar cooling cleaning and filtering system
CN114369707A (en) * 2021-12-03 2022-04-19 首钢集团有限公司 Strip steel without flat coil defect and color difference defect and preparation method and application thereof
CN114433646A (en) * 2022-01-21 2022-05-06 临沂大学 Water piping device for cooling system after hot rolled strip steel rolling and cooling system

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102343372A (en) * 2011-10-20 2012-02-08 秦皇岛首秦金属材料有限公司 Production method for rapidly cooling medium plate after rolling
CN102426462A (en) * 2011-11-30 2012-04-25 东北大学 Method for accelerating stabilizing speed of ultra-fast cold variable frequency pump water pressure system
CN102513367A (en) * 2011-11-30 2012-06-27 东北大学 Detecting protection device for rolling plate warped head
CN102426462B (en) * 2011-11-30 2013-04-03 东北大学 Method for accelerating stabilizing speed of ultra-fast cold variable frequency pump water pressure system
CN103978051A (en) * 2014-05-13 2014-08-13 东北大学 Water supply system of medium plate ultra fast cooling equipment and control method
CN103978051B (en) * 2014-05-13 2015-12-09 东北大学 The water system of the ultrafast cool equipment of a kind of cut deal and control method
CN106391734A (en) * 2016-08-17 2017-02-15 钢铁研究总院 Sectional step type cooling device for hot rolling of high-strength steel bars
CN106311778A (en) * 2016-08-30 2017-01-11 北京首钢自动化信息技术有限公司 Method for online automatic maintaining of hot-rolled laminar cooling manifolds
CN109647914A (en) * 2019-01-24 2019-04-19 燕山大学 Hot rolled strip liquid nitrogen ultra-fast cooling device
CN109647914B (en) * 2019-01-24 2020-01-14 燕山大学 Liquid nitrogen ultrafast cooling device for hot-rolled plate strip
CN110523787A (en) * 2019-09-30 2019-12-03 攀钢集团攀枝花钢铁研究院有限公司 A kind of hot continuous rolling steel centre base ultra-rapid cooling method
CN110508625A (en) * 2019-10-17 2019-11-29 东北大学 On-line Control cooling device and method for middle small-caliber hot rolling seamless steel
CN113319136A (en) * 2021-05-18 2021-08-31 武汉钢铁有限公司 Multistage laminar cooling cleaning and filtering system
CN114369707A (en) * 2021-12-03 2022-04-19 首钢集团有限公司 Strip steel without flat coil defect and color difference defect and preparation method and application thereof
CN114369707B (en) * 2021-12-03 2024-02-06 首钢集团有限公司 Strip steel without flat coil defect and chromatic aberration defect, and preparation method and application thereof
CN114433646A (en) * 2022-01-21 2022-05-06 临沂大学 Water piping device for cooling system after hot rolled strip steel rolling and cooling system
CN114433646B (en) * 2022-01-21 2023-06-23 临沂大学 Water piping device for hot rolled strip steel post-rolling cooling system and cooling system

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20110316

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