CN202079103U - Quick-cooling device for hot-rolled steel plate - Google Patents
Quick-cooling device for hot-rolled steel plate Download PDFInfo
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- CN202079103U CN202079103U CN2011201103609U CN201120110360U CN202079103U CN 202079103 U CN202079103 U CN 202079103U CN 2011201103609 U CN2011201103609 U CN 2011201103609U CN 201120110360 U CN201120110360 U CN 201120110360U CN 202079103 U CN202079103 U CN 202079103U
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Abstract
The utility model discloses a quick-cooling device for a hot-rolled steel plate, which comprises a precise-cooling segment and an intensive-cooling segment, wherein the precise-cooling segment is used for laminar cooling, the intensive-cooling segment is arranged in front of the precise-cooling segment, the intensive-cooling segment comprises a machine frame, height-adjusting mechanisms, cooling collecting pipes which can radially rotate and cooling nozzles, the height-adjusting mechanisms are respectively arranged at the upper part and the lower part of the machine frame, the cooling collecting pipes are respectively arranged on the upper height-adjusting mechanism and the lower height-adjusting mechanism, and the cooling nozzles are radially arranged on the cooling collecting pipes. The steel plate is quickly cooled through the cooling nozzles on the cooling collecting pipes, and the quick-cooling effect is improved by adjusting the jetting height and the jetting angle of cooling water.
Description
Technical field
The utility model relates to the steel plate cooling technology, more particularly, relates to a kind of hot rolled steel plate quickly cooling device.
Background technology
In recent years, along with the development of controlled rolling with control cooling technology (TMCP), cooling or supper-fast cooling technology begin to use in modern steel is produced fast, its objective is and cool off fast rolling the after-hardening austenite, and in dynamic phase trasnsition point termination cooling, cool off control subsequently, to obtain having premium properties, save the alloy resource and the energy, to be beneficial to recycling ferrous materials.
At present, the common type of cooling is generally the laminar flow cooling, in heat transfer process, the heat exchange zone of surface of steel plate is made up of jet impulse district, nuclear boiling district, film boiling district and droplet accumulation regions, wherein jet impulse district heat transfer intensity is the highest, its coefficient of heat transfer is about (10000～40000) W/m2K, the nuclear boiling district secondly, and the cooling water in film boiling district can't with the surface of steel plate direct heat transfer, need by the bigger steam film conduction heat of thermal resistance, its heat transfer intensity is much smaller than the direct heat transfer of cooling water and steel plate.The coefficient of heat transfer of steam film heat exchange is about 150～350W/m2K.Usually the jet impulse heat exchange accounts for 30% of total heat exchange amount, and the film boiling heat exchange accounts for 50%, and the film boiling coefficient of heat transfer is very little, and that laminar flow cooling procedure cooling water breaks up the scope of air film is very little, so the cooling effectiveness of traditional laminar flow cooling is not high.
The utility model content
At the above-mentioned shortcoming that exists in the prior art, the purpose of this utility model provides a kind of hot rolled steel plate quickly cooling device, in order to improve cooling effect, realizes cooling off fast rolling the back steel plate.
For achieving the above object, the utility model adopts following technical scheme:
This hot rolled steel plate quickly cooling device comprises the fine cold-leg of laminar flow cooling, also comprise strong cold section that is located at before the fine cold-leg, strong cold section comprises frame, height-regulating mechanism, the cooling manifold that can radially rotate and cooling jet, height-regulating mechanism is located at the upper and lower part of frame respectively, cooling manifold is located at respectively on the upper and lower height-regulating mechanism, and cooling jet radially is located on the cooling manifold.
Described each height-regulating mechanism includes worm and gear, sprocket wheel and handwheel, and cooling manifold is located at worm and gear one end, and sprocket wheel is located at the worm and gear other end, and handwheel links to each other with sprocket wheel.
Described cooling manifold one end is provided with the positioning element with control cooling manifold rotation location.
The described adjustment stroke that goes up height-regulating mechanism is 30～400mm; The described adjustment stroke of height-regulating mechanism down is 20～400mm.
In technique scheme, hot rolled steel plate quickly cooling device of the present utility model comprises the fine cold-leg of laminar flow cooling, also comprise strong cold section that is located at before the fine cold-leg, strong cold section comprises frame, height-regulating mechanism, the cooling manifold that can radially rotate and cooling jet, height-regulating mechanism is located at the upper and lower part of frame respectively, cooling manifold is located at respectively on the upper and lower height-regulating mechanism, and cooling jet radially is located on the cooling manifold.By the cooling jet on the cooling manifold steel plate is cooled off fast, and pass through to adjust height and the angle that cooling water sprays, thereby improve quick cooling effect.
Description of drawings
Fig. 1 is the schematic diagram of hot rolled steel plate quickly cooling device of the present utility model;
Fig. 2 is cooling is sprayed at cooling jet of the present utility model angle of inclination to steel plate a schematic diagram;
Fig. 3 is a structure chart of the present utility model strong cold section.
The specific embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
See also Fig. 1～shown in Figure 3, hot rolled steel plate quickly cooling device of the present utility model is arranged at after the centralising device 2 of milling train 1, before the heating furnace 3, comprises the fine cold-leg 11 of laminar flow cooling, and after fine cold-leg 11, be equipped with outlet gas curtain 4, cooling water is dried up.This fine cold-leg 11 is same as the prior art, does not repeat them here.This cooling device also comprises strong cold section 12 that is located at before the fine cold-leg 11, strong cold section 12 comprises frame 121, height-regulating mechanism, the cooling manifold 122 that can radially rotate and cooling jet 123, height-regulating mechanism is located at the upper and lower part of frame 121 respectively, cooling manifold 122 is located at respectively on the upper and lower height-regulating mechanism, and several cooling jets 123 radially are located on the cooling manifold 122.Described each height-regulating mechanism includes worm and gear 124, sprocket wheel 125 and handwheel 126, and cooling manifold 122 is located at worm and gear 124 1 ends, and sprocket wheel 125 is located at worm and gear 124 other ends, and handwheel 126 links to each other with sprocket wheel 125.By manual shaking wheel, can drive cooling manifold 122 oscilaltions.In order to guarantee the quick cooling of steel plate 5, in strong cold section 12 in Fig. 1, set gradually the identical frame 121 of three covers, dispose identical height-regulating mechanism, cooling manifold 122 and cooling jet 123 on each frame 121.In addition, at the positioning element of cooling manifold 122 1 end settings in order to control cooling manifold 122 rotation location, this positioning element can be locating ring 127 and alignment pin 128, be located at cooling manifold 122 1 ends by locating ring 127, can be with cooling manifold 122 rotation, and adjust the spray angle of location cooling jet 123 by alignment pin 128, spray angle regulating effect in ± 45 ° of scopes is preferablely (to see Fig. 2, A position impact zone among Fig. 2, the B district is the steam film district).Described cooling manifold 122 can adopt and at inner axial tube two dividing plates is set and be separated into three passages in pipe, and central passage supplies water separately, two limit portion passage entry are by same piped water supply, identical to guarantee the both sides operating mode, make the steel plate 5 middle part water yields and the limit portion water yield to regulate separately like this, thereby guarantee that the steel plate 5 width water yields are controlled, temperature is even.The separate case application of the concrete structure of above-mentioned cooling manifold 122 does not repeat them here.And the described adjustment stroke that goes up height-regulating mechanism is 30～400mm; The described adjustment stroke of height-regulating mechanism down is that 20～400mm is preferable.Certainly, also can be by attemperater be set, for steel plate 5 fast cooling provide water temperature at 0～90 ℃ stable source of water, the assurance coolant water temperature is adjustable, can carry out the cooling test of different water temperatures on the one hand, can guarantee the experiment condition unanimity of Various Seasonal simultaneously, result of the test has more comparativity.This attemperater can adopt the vertical cylinder pattern, adopts the direct Hybrid Heating of steam.
Be illustrated below by the cooling effect of specific embodiment strong cold section 12 of this quickly cooling device:
10 nozzles are installed on every cooling manifold 122, middle 6, each 2 on both sides.The spray angle of nozzle becomes 75 ° with surface of steel plate, 28 ℃ of coolant water temperatures; With specification is after the steel plate of 25 * 400 * 600mm is heated to 720 ℃, to enter quickly cooling device, and this moment, pressure was 5bar, and cooling water inflow is 260m
3/ h, and bury even thermometric in cooling procedure promptly bores different depth from the steel plate side at 1/2 thickness position
Pore, and be solded into
K type thermocouple, temperature-measuring results shows its surperficial cooling rate of steel plate of 25mm greater than 400 ℃/s, heart portion cooling rate is 18.3 ℃/s, average cooling rate can reach 49.4 ℃/s, far faster than 10～25 ℃/s of existing laminar flow cooling.
Hydraulic pressure is adjusted into 3.8bar, and cooling water inflow is 40m3/h, and all the other conditions are with embodiment 1, temperature-measuring results shows that 25mm slab surface cooling rate is greater than 400 ℃/s, and heart portion cooling rate is 11.3 ℃/s, average cooling rate can reach 45 ℃/s, same 10～25 ℃/s that far cools off faster than existing laminar flow.
In sum, adopt hot rolled steel plate quickly cooling device of the present utility model, cool off fast by 123 pairs of steel plates of the cooling jet on the cooling manifold 122, and by adjusting height and the angle that cooling water sprays, thereby improve quick cooling effect, be specially adapted to the slab process for cooling and the steel grade development experiments of carrying out in laboratory or production scene, for process for cooling research and new steel grade exploitation provide the excellent research means.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (4)
1. a hot rolled steel plate quickly cooling device comprises the fine cold-leg that laminar flow cools off, and it is characterized in that:
Also comprise strong cold section that is located at before the fine cold-leg, strong cold section comprises frame, height-regulating mechanism, the cooling manifold that can radially rotate and cooling jet, height-regulating mechanism is located at the upper and lower part of frame respectively, cooling manifold is located at respectively on the upper and lower height-regulating mechanism, and cooling jet radially is located on the cooling manifold.
2. hot rolled steel plate quickly cooling device as claimed in claim 1 is characterized in that:
Described each height-regulating mechanism includes worm and gear, sprocket wheel and handwheel, and cooling manifold is located at worm and gear one end, and sprocket wheel is located at the worm and gear other end, and handwheel links to each other with sprocket wheel.
3. hot rolled steel plate quickly cooling device as claimed in claim 1 or 2 is characterized in that:
Described cooling manifold one end is provided with the positioning element in order to control cooling manifold rotation location.
4. hot rolled steel plate quickly cooling device as claimed in claim 1 is characterized in that:
The described adjustment stroke that goes up height-regulating mechanism is 30～400mm; The described adjustment stroke of height-regulating mechanism down is 20～400mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201103609U CN202079103U (en) | 2011-04-14 | 2011-04-14 | Quick-cooling device for hot-rolled steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201103609U CN202079103U (en) | 2011-04-14 | 2011-04-14 | Quick-cooling device for hot-rolled steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202079103U true CN202079103U (en) | 2011-12-21 |
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ID=45339758
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201103609U Expired - Fee Related CN202079103U (en) | 2011-04-14 | 2011-04-14 | Quick-cooling device for hot-rolled steel plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202079103U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785551A (en) * | 2013-11-07 | 2015-07-22 | 杨海西 | Steel plate cooling device |
| CN105363799A (en) * | 2015-10-21 | 2016-03-02 | 钢铁研究总院 | Non-even-temperature rolling and cooling control process for steel material with homogenized structure and performance |
| CN105652913A (en) * | 2014-11-14 | 2016-06-08 | 宝山钢铁股份有限公司 | Steel plate induction heating process edge portion temperature control method and control apparatus |
| CN108526258A (en) * | 2018-04-14 | 2018-09-14 | 刘冲 | A kind of veneer reeling machine with refrigerating function |
-
2011
- 2011-04-14 CN CN2011201103609U patent/CN202079103U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104785551A (en) * | 2013-11-07 | 2015-07-22 | 杨海西 | Steel plate cooling device |
| CN104785551B (en) * | 2013-11-07 | 2019-04-30 | 杨海西 | Cooling device of steel plate |
| CN105652913A (en) * | 2014-11-14 | 2016-06-08 | 宝山钢铁股份有限公司 | Steel plate induction heating process edge portion temperature control method and control apparatus |
| CN105652913B (en) * | 2014-11-14 | 2018-03-09 | 宝山钢铁股份有限公司 | Induction heating for steel plate process edge temprature control method and control device |
| CN105363799A (en) * | 2015-10-21 | 2016-03-02 | 钢铁研究总院 | Non-even-temperature rolling and cooling control process for steel material with homogenized structure and performance |
| CN108526258A (en) * | 2018-04-14 | 2018-09-14 | 刘冲 | A kind of veneer reeling machine with refrigerating function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111221 Termination date: 20200414 |