CN2785741Y - Combined water supplying and distributing device for controlled cooling of black strip - Google Patents

Combined water supplying and distributing device for controlled cooling of black strip Download PDF

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Publication number
CN2785741Y
CN2785741Y CNU2005200961429U CN200520096142U CN2785741Y CN 2785741 Y CN2785741 Y CN 2785741Y CN U2005200961429 U CNU2005200961429 U CN U2005200961429U CN 200520096142 U CN200520096142 U CN 200520096142U CN 2785741 Y CN2785741 Y CN 2785741Y
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CN
China
Prior art keywords
water
pipe
collector
tank
preposition
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Expired - Fee Related
Application number
CNU2005200961429U
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Chinese (zh)
Inventor
赵金标
高少华
唐强
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Wisdri Engineering and Research Incorporation Ltd
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Wisdri Engineering and Research Incorporation Ltd
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Priority to CNU2005200961429U priority Critical patent/CN2785741Y/en
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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

Abstract

The utility model relates to combined water supplying and distributing device of a cooling water supply system for a piece of hot rolling strip steel in metallurgy industry, which comprises a water pipe (3), a prepositive high level cistern (4), a water collecting pipe (5), an upper spraying header pipe (7), a lower spraying header pipe (9), an iron sheet slot (10), an overflow water pipe (11), a frequency conversion water pump (12) and a settling tank (13), wherein a spray head of the upper spraying header pipe (7) is positioned above the strip steel; a spray head of the lower spraying header pipe (9) is positioned below the strip steel. The utility model is characterized in that one end of the water collecting pipe (5) is communicated with the prepositive high level cistern (4), and the other end of the water collecting pipe (5) is communicated with a side voltage regulation cistern (6) which is respectively communicated with the upper spraying header pipe (7) and the lower spraying header pipe (9). The utility model has the characteristics of stable water discharge quantity of the spraying header pipes, energy saving and low consumption. Besides, the precision for the final cooling temperature control is high.

Description

Hot-strip control cooling associating water supply and distribution device
Technical field
The utility model relates to the water supply and distribution device of metallurgy industry hot-strip cooling water system, particularly is used for the water supply and distribution device of the water system of hot continuous rolling, heavy and medium plate mill band steel control cooling.
Background technology
After hot-strip is rolling, reach the purpose of control plate quality by its final cooling temperature of water spray cooling control, the precision of final cooling temperature control directly influences the quality of band steel, whether the quality of water supply and distribution device design can control the precision that band steel injection flow rate reaches the control final cooling temperature effectively thereby be directly connected to.Because the demand difference of rolled band steel kind difference, operation of rolling speed, heating furnace heating-up temperature, product quality, injection flow rate are also different, thereby accurately control band steel final cooling temperature is extremely difficult, and temperature controlled precision is high more, and strip quality is just stable more.
Usually the following several forms of hot-strip control cooling water supply and distribution device that adopt:
1, the direct way of supplying water of water pump;
2, water pump+preposition high-level tank water mode is seen Fig. 1;
Mode 1 is traditional water supply and distribution device, the mode that adopts water pump directly to supply water to the unit jet pipe, because the unit water consumption changes greatly, mode by control jet pipe group numerical control system injection flow rate, because pipe resistance changes greatly because of the difference of water consumption, therefore be difficult to the requirement that reaches desirable by jet pipe group numerical control system injection flow rate, control accuracy, change roller-way and two at milling train simultaneously and be with the steel gaps, water supply will be switched to trench, cause a large amount of energy wastes.
The mode that the water supply and distribution device of mode 2 promptly adopts water pump+preposition elevated tank to supply water to the unit jet pipe, water pump supplies water to preposition elevated tank (water tower), is being supplied water to controlling hot rolling process for cooling section collector pipe by preposition elevated tank (water tower) then.Change roller-way and two band steel gaps at milling train, water pump is still to preposition high-level tank water, and supplying water is stored in the preposition elevated tank (water tower), when the band steel passes through cooling section, reaches the final cooling temperature of control band steel by the quantity of control collector pipe.Though this mode is in water saving, make moderate progress than mode 1 aspect energy-conservation, when the water yield changes greatly or when the replacing roll, the storage volumes of preposition elevated tank is limited, a large amount of water still needs to flow back to absorbing well, absorption well (or sedimentation basin) from preposition elevated tank; In addition, preposition elevated tank is at unit not during water, store at preposition elevated tank, water level rises, again because operation of rolling unit water consumption changes greatly, and pipe resistance is because of the difference of water consumption changes again, cause the preceding pressure of water spray collector than great fluctuation process, therefore carry out the control of final cooling temperature by jet pipe group numerical control system injection flow rate, precision is difficult to the requirement that reaches desirable.
Summary of the invention
The purpose of this utility model is to provide the stable hot-strip control of a kind of collector water flow of spraying water to cool off associating water supply and distribution device.
To achieve these goals, the technical solution of the utility model is: hot-strip control cooling associating water supply and distribution device, it comprises water pipe 3, preposition elevated tank 4, collector pipe 5, last water spray collector 7, under the collector 9 of spraying water, iron sheet ditch 10, overflow pipe 11, variable frequency pump 12, sedimentation basin 13, the input of variable frequency pump 12 is connected with sedimentation basin 13 by water pipe, the output of variable frequency pump 12 is connected by the upper end of water pipe 3 with preposition elevated tank 4, top in the preposition elevated tank 4 is provided with overflow pipe 11, overflow pipe 11 is connected with sedimentation basin 13, the shower nozzle of last water spray collector 7 is positioned at the top of band steel, the shower nozzle of collector 9 of spraying water down is positioned at the below of band steel, one end of iron sheet ditch 10 is positioned at the below of water spray collector 9 down, and the other end of iron sheet ditch 10 is connected with sedimentation basin 13; It is characterized in that: an end of collector pipe 5 is connected with preposition elevated tank 4, and the other water tank of voltage regulation 6 of the other end of collector pipe 5 and machine is connected, and the other water tank of voltage regulation 6 of machine is respectively with last water spray collector 7, the collector 9 of spraying water is connected down.
Described collector pipe 5, on spray water collector 7, spray water and be respectively equipped with valve 17, valve 19, valve 18 on the collector 9 down.
Be provided with overflow pipe 16 in the other water tank of voltage regulation 6 of described machine.
The utlity model has following characteristics:
1), reached every water spray collector (on spray water collector 7, the collector 9 of spraying water down) the constant purpose of water flow, final cooling temperature control accuracy height by setting up the other water tank of voltage regulation of machine; The valve of the water inlet pipe and water outlet pipe that the other water tank of voltage regulation 6 of machine links to each other is with opening with closing control, and the other water tank of voltage regulation water level of machine can be comparatively stable, and every water spray collector water flow is also constant; Set up the other water tank of voltage regulation of machine, realized energy saving purposes to greatest extent.
2) regulate the peak value water by setting up preposition elevated tank and variable frequency regulating speed control to reach, reduce the problem of traditional approach 1 and a large amount of energy wastes of mode 2 water supply and distribution devices.
Description of drawings
Fig. 1 is existing water supply and distribution apparatus structure schematic diagram
Fig. 2 is a structural representation of the present utility model
Fig. 3 is the cutaway view of the other water tank of voltage regulation of the utility model machine
Among the figure: 1-cooling tower, 2-filter, 3-water pipe, the preposition elevated tank of 4-, the 5-collector pipe, the other water tank of voltage regulation of 6-machine, the last water spray of 7-collector, 8-is with steel, and 9-is the water spray collector down, 10-iron sheet ditch, the 11-overflow pipe, 12-variable frequency pump, 13-sedimentation basin, the 14-variable frequency pump, 15-water pipe, 16-overflow pipe, the 17-valve, 18-valve, 19-valve.
The specific embodiment
As Fig. 2, shown in Figure 3, hot-strip control cooling associating water supply and distribution device, it comprises cooling tower 1, filter 2, water pipe 3, preposition elevated tank 4, collector pipe 5, the other water tank of voltage regulation 6 of machine, last water spray collector 7, under the collector 9 of spraying water, iron sheet ditch 10, overflow pipe 11, variable frequency pump 12, sedimentation basin 13, variable frequency pump 14, water pipe 15, overflow pipe 16, valve 17, valve 18, valve 19, the input of variable frequency pump 12 is connected with sedimentation basin 13 by water pipe, the output of variable frequency pump 12 is connected by the upper end of water pipe 3 with preposition elevated tank 4, top in the preposition elevated tank 4 is provided with overflow pipe 11, and overflow pipe 11 is connected with sedimentation basin 13; One end of collector pipe 5 is connected with preposition elevated tank 4, the other end of collector pipe 5 is connected with the other water tank of voltage regulation 6 of machine, the other water tank of voltage regulation 6 of machine is respectively with last water spray collector 7, the collector 9 of spraying water is connected down, the shower nozzle of last water spray collector 7 is positioned at the top of band steel, the shower nozzle of collector 9 of spraying water down is positioned at the below of band steel, one end of iron sheet ditch 10 is positioned at the below of water spray collector 9 down, and the other end of iron sheet ditch 10 is connected with sedimentation basin 13; The collector pipe 5 that links to each other with the other water tank of voltage regulation 6 of machine, on spray water collector 7, spray water and be respectively equipped with valve 17, valve 19, valve 18 on the collector 9 down; Be provided with overflow pipe 16 in the other water tank of voltage regulation 6 of described machine.The input of variable frequency pump 14 is connected with sedimentation basin 13 by water pipe, the output of variable frequency pump 14 is connected with filter 2 upper ends by water pipe, the bottom of filter 2 is connected by the upper end of water pipe with cooling tower 1, and the bottom of cooling tower 1 is connected with sedimentation basin 13.
By setting up the other water tank of voltage regulation of machine, stablize the pressure of every water spray collector, reached the every constant purpose of water spray collector water flow, realize the simplification that rolling mathematics of control model is set up; The valve of the water inlet pipe and water outlet pipe by the other water tank of voltage regulation of machine same opens with closing control and reaches the minimal ripple of the water level of the other water tank of voltage regulation of machine, realizes hydraulic pressure stable to greatest extent of water spray collector; Regulate the peak value water by setting up preposition elevated tank and variable frequency regulating speed control (being variable frequency pump 12) to reach, reduce a large amount of energy waste problems of traditional water water supplying pump.
Valve control: the other water tank of voltage regulation water inlet pipe and water outlet pipe of machine is switch simultaneously, so the other water tank of voltage regulation water level of machine can be comparatively stable.
Water pump control: on the basis of reference technology flow, determine water pump unlatching platform number.Controlling hot rolling is cooled off the other water tank of voltage regulation low water level of the machine alarm signal of unit and delivered to the water processing control chamber, open corresponding measures such as platform number, guarantee the requirement of laminar flow cooling water so that the water supply pumping plant takes to increase water pump.Variable frequency pump adopts the constant-pressure variable control mode, preposition elevated tank 4 water levels and variable frequency pump interlocking, control variable frequency pump output, under the prerequisite of guaranteeing the process water amount, adapt to the variation of process water amount to greatest extent, reduce the water tank overflow amount, energy-saving and cost-reducing.
Establish the water level meter in the preposition elevated tank, according to preposition elevated tank water level, the rotating speed of control variable frequency pump, thereby control variable frequency pump water yield.When preposition elevated tank water level was higher than working water level, the variable frequency pump rotating speed began to descend; Otherwise rotating speed is opened this rising, and so circulation keeps preposition elevated tank water level relatively stable.When mill roll or preposition elevated tank stable level of other intermittent time at working water level, this moment, the variable frequency pump rotating speed was minimum.Establish in the preposition elevated tank and guarantee that the water tank water yield cools off the low water level alarm device and the overflow alarm water level of maximum water consumption greater than laminar flow.

Claims (3)

1. associating water supply and distribution device is cooled off in hot-strip control, it comprises water pipe (3), preposition elevated tank (4), collector pipe (5), last water spray collector (7), under the collector (9) of spraying water, iron sheet ditch (10), overflow pipe (11), variable frequency pump (12), sedimentation basin (13), the input of variable frequency pump (12) is connected with sedimentation basin (13) by water pipe, the output of variable frequency pump (12) is connected by the upper end of water pipe (3) with preposition elevated tank (4), top in the preposition elevated tank (4) is provided with overflow pipe (11), overflow pipe (11) is connected with sedimentation basin (13), the shower nozzle of last water spray collector (7) is positioned at the top of band steel, the shower nozzle of collector (9) of spraying water down is positioned at the below of band steel, one end of iron sheet ditch (10) is positioned at the below of water spray collector (9) down, and the other end of iron sheet ditch (10) is connected with sedimentation basin (13); It is characterized in that: an end of collector pipe (5) is connected with preposition elevated tank (4), and the other water tank of voltage regulation of the other end of collector pipe (5) and machine (6) is connected, and the other water tank of voltage regulation of machine (6) is respectively with last water spray collector (7), the collector (9) of spraying water is connected down.
2. hot-strip according to claim 1 control cooling associating water supply and distribution device is characterized in that: described collector pipe (5), on spray water collector (7), spray water and be respectively equipped with valve (17), valve (19), valve (18) on the collector (9) down.
3. hot-strip control cooling associating water supply and distribution device according to claim 1 is characterized in that: be provided with overflow pipe (16) in the other water tank of voltage regulation of described machine (6).
CNU2005200961429U 2005-04-28 2005-04-28 Combined water supplying and distributing device for controlled cooling of black strip Expired - Fee Related CN2785741Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2005200961429U CN2785741Y (en) 2005-04-28 2005-04-28 Combined water supplying and distributing device for controlled cooling of black strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2005200961429U CN2785741Y (en) 2005-04-28 2005-04-28 Combined water supplying and distributing device for controlled cooling of black strip

Publications (1)

Publication Number Publication Date
CN2785741Y true CN2785741Y (en) 2006-06-07

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101463824B (en) * 2008-12-29 2011-09-28 中冶南方工程技术有限公司 Design method for independent water supply and spill of hot-rolling high-pressure water pump station
CN102794316A (en) * 2012-07-13 2012-11-28 中冶南方工程技术有限公司 Quick control cooling device of medium steel plate
CN110883113A (en) * 2019-10-31 2020-03-17 张家港宏昌钢板有限公司 Laminar cooling water supply equipment and using method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101463824B (en) * 2008-12-29 2011-09-28 中冶南方工程技术有限公司 Design method for independent water supply and spill of hot-rolling high-pressure water pump station
CN102794316A (en) * 2012-07-13 2012-11-28 中冶南方工程技术有限公司 Quick control cooling device of medium steel plate
CN110883113A (en) * 2019-10-31 2020-03-17 张家港宏昌钢板有限公司 Laminar cooling water supply equipment and using method
CN110883113B (en) * 2019-10-31 2021-07-20 张家港宏昌钢板有限公司 Laminar cooling water supply equipment and using method

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20060607

Termination date: 20130428

C17 Cessation of patent right