CN2866518Y - Fast cooling spraying box capable of suppressing strap steel vibration for continuous annealing - Google Patents
Fast cooling spraying box capable of suppressing strap steel vibration for continuous annealing Download PDFInfo
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- CN2866518Y CN2866518Y CN 200620039026 CN200620039026U CN2866518Y CN 2866518 Y CN2866518 Y CN 2866518Y CN 200620039026 CN200620039026 CN 200620039026 CN 200620039026 U CN200620039026 U CN 200620039026U CN 2866518 Y CN2866518 Y CN 2866518Y
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- strip
- continuous annealing
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- band steel
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Abstract
The utility model relates to a fast cooling spray bin for cold rolling strip continuous annealing. A continuous annealing fast cooling spray bin continuous annealing of controlling strip shaker comprises a wind box, a spray nozzle, an exhaust collector, a heat exchanger, a circulating fan and a pipe for circulating gas, wherein the spray nozzle is mounted on the board of the wind bin, which covers the width of the strip, the distance of a line of spray nozzle end is the same as the strip, the strip is arranged between two lines of spray nozzles. The model is characterized in that the board of wind bin is v-pyramid or cambered surface with its projection to the strip, which is along the direction of strip width. The angle formed by the v-pyramid or cambered surface of the wind bin board and the strip plane is 10 degree -30 degrees. The model not only guarantees the continuous annealing and cooling speed of the strip, but also reduces the gas flow rate on the strip edge, controls and removes the shaker produced when cooling the high-speed gas, on the premise of increasing wind bins continuously and using least stable roller.
Description
(1) technical field
The utility model relates to a kind of cold-rolled steel strip continuous annealing rapid cooling spray box.
(2) background technology
A kind of effective ways that improve cold rolled strip intensity are to be with steel to cool off fast in the continuous annealing process.In order to increase substantially the speed of cooling of band steel in the continuous annealing process, can access good belt steel surface and plate shape again, now developed fast cooling technology with high speed hydrogen cooling zone steel.In existing band steel continuous annealing cooling section, adopt the spray box structure of the cylindric nozzle shown in Fig. 1 (a, b) usually: cooling gas sprays at a high speed from the nozzle 2 on the bellows 1, and band steel 4 is cooled off fast; The gas that heats up behind the cooling zone steel is extracted out from the bellows both sides, is pressed into airduct 7 by blower fan 6 once more after interchanger 5 coolings to jet, and the cooling zone steel, thus form the circulation passage of a closed loop.The spray box of cylindric nozzle is obstructed because of the cooling gas exhaust channel, and the speed of cooling that further improves the band steel is difficult.Another kind of typical spray box is the spray box of slit-shaped nozzle, and its bellows panel is plane, as shown in Figure 2.
Under identical heat-eliminating medium condition, the effective way that improves band steel speed of cooling is to improve the spouting velocity of cooling gas, but because the cooling gas speed height of ejection, caused the band steel to produce bigger vibration at cooling section, particularly the vibration of the band steel of thinner thickness is even more serious, in order to suppress and to alleviate the vibration of band steel, have to adopt the vibration isolation method of adding to stablize roller at cooling section, but the increase of the limited and stable roller quantity of furnace inner space will certainly bring the danger that scratches belt steel surface.
Be to solve band steel (limit portion) vibration problem, patent 02805833.X (application number) provides the proper ratio of the distance H between a strip width W and band steel and the bellows panel, and promptly W/H=6-13 prevents the generation vibrated.Because the bellows panel is parallel with belt steel surface, when strip width W increased, H certainly will and then strengthen, and nozzle projecting height h=H-z (z is a distance between nozzle-end and band steel, remains unchanged) also will extend, and consequently the bellows volume increases; Gas stream is through the time lengthening of nozzle, and the heat of the outside hot blast of absorption nozzle increases, and temperature raises, and is unfavorable for quick cooling.
In addition, owing to progressively compile along the discharge of strip width direction cooling gas, tolerance is less in the middle part, the tolerance of discharging towards limit portion direction increases gradually, limit portion at the band steel, tolerance of discharging and average exhaust velocity Vf0 reach maximum value, and as shown in Figure 3, Vf0 is proportional to the half-breadth of bellows.Simultaneously and since the gas that sprays to band steel middle part with the band steel collision back cooling tank that rebounds back, along cooling tank panel effluent to limit portion; The gas that sprays to band steel time middle part with the collision of band steel after the cooling tank side that also rebound back, with the disorder of existing air-flow generation part after, most of meeting form new airflow layer again in the inboard that has airflow layer and flow to limit portion, and the like, airflow layer is more and more thicker.Referring to Fig. 5, the figure middle polyline is represented five cooling gas mobility status that typical position nozzle is sprayed from band steel center to limit portion respectively.Because the surface of existing cool wind box is parallel with belt steel surface, the gas after the bounce-back is forced to half-twist could flow to limit portion.Consequently not only eddy current aggravation, energy consumption is big, and after being with the steel bounce-back by the nozzle ejection gas of near part, can only flow out along near the space band steel, and this position current density is big, and the vibration of band steel takes place in speed height easily.
(3) summary of the invention
The purpose of this utility model is to provide a kind of continuous annealing rapid cooling spray box of inhibition zone steel vibration, this spray box is by the design of spray box panel, the guiding of gas after the bounce-back is flowed in away from the runner of band steel, reduce the gas flow rate of strip edge portion, the vibration that inhibition or elimination band steel produce when high-speed gas cools off.
The utility model is achieved in that a kind of continuous annealing rapid cooling spray box of inhibition zone steel vibration, comprise bellows, nozzle, exhaust gas collection device, interchanger, recirculation blower, recycle gas pipeline, nozzle is installed on the bellows panel, the width of nozzle cover tape steel, one row's nozzle face equates with the distance of band steel, between two row's nozzles, it is characterized in that along the strip width direction about the band steel places, the bellows panel is the V font conical surface or cambered surface, and protuberance is towards the band steel.
The continuous annealing rapid cooling spray box of above-mentioned inhibition zone steel vibration, the taper angle that the conical surface of described bellows panel or cambered surface and band steel plane constitute is 10 °～30 °; The conical surface of bellows panel or cambered surface are positioned at band steel center.
The continuous annealing rapid cooling spray box of above-mentioned inhibition zone steel vibration, the described nozzle that is installed on the bellows panel can be cylindric or slit-shaped.
The utility model is along the strip width direction, amount and bounce-back back gas flow direction according to each position cooling gas, the panel designs of cool wind box is become the conical surface or cambered surface, make each flow area that comparison constant gas speed and reasonably gas flow be arranged, to reach best gas flow situation, the vibration of elimination or inhibition zone steel.And not increasing bellows quantity and using under the prerequisite of minimum stable roller, can guarantee the fast speed of cooling of continuous annealing, vibration that again can the inhibition zone steel with steel.
The utility model can reduce the gas flow rate of strip edge portion, the vibration that inhibition or elimination band steel produce when high-speed gas cools off.
(4) description of drawings
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Fig. 1 a is existing rapid cooling spray box structural representation;
Fig. 1 b is existing cylinder shape nozzle cool wind box synoptic diagram;
Fig. 2 is an existing narrow slit type nozzle cool wind box synoptic diagram;
Fig. 3 is existing cool wind box (the bellows panel is parallel with a band steel) fundamental diagram;
Fig. 4 for the utility model continuous annealing with quick cool wind box fundamental diagram;
Fig. 5 is mobile state (the getting the one half) mimic diagram of cooling gas in the existing cool wind box;
Fig. 6 is mobile state (the getting the one half) mimic diagram of the utility model cool wind box cooling gas;
Fig. 7 is the utility model continuous annealing rapid cooling spray box structural representation.
Among the figure: 1 cool wind box, 2 are installed in all kinds of gas jets on the bellows panel, 3 exhaust gas collection devices, the 4 band steel that are cooled, 5 interchanger, 6 recirculation blowers, the pipeline that 7 recycle gas are used, 8 bellows panels, 9 contain the bellows panel of the V font conical surface or cambered surface.
(5) embodiment
Referring to Fig. 4, Fig. 7, a kind of continuous annealing rapid cooling spray box of inhibition zone steel vibration comprises bellows 1, nozzle 2, exhaust gas collection device 3, interchanger 5, recirculation blower 6, recycle gas pipeline 7.Cooling gas sprays at a high speed from the nozzle 2 on the bellows 1, and band steel 4 is cooled off fast; The gas that heats up in cooling zone steel 4 back is extracted out and is collected from bellows 1 both sides through exhaust gas collection device 3, is pressed into gas pipeline 7 by blower fan 6 once more after interchanger 5 coolings to jet, and cooling zone steel 4, thus form the circulation passage of a closed loop.Nozzle 2 is installed on the bellows panel 9, and the width of nozzle 2 cover tape steel 4, row's nozzle 2 end faces equate that with the distance of band steel 4 two row's nozzles were 2 about band steel 4 placed.Bellows panel 9 the be in the shape of the letter V conical surface or cambered surface are the V font conical surface in the present embodiment, and protuberance is towards the band steel 4 that is cooled.Nozzle 2 on the panel 9 can be cylindric, also can be slit-shaped.According to the characteristics of bellows panel 9, intermediary nozzle 2 (cylindric) or the outstanding distance h of nozzle 2 parts (slit-shaped) ' less, progressively be increased to the h at two ends
1, h
1Not only much larger than h ', and than the h of existing bellows 8
0Greatly, form the exhaust-duct of a bell mouth shape, the conical surface of bellows panel 9 is 10 °～30 ° with the taper angle θ that band steel 4 planes constitute, and bellows panel 9 conical surfaces are positioned at band steel 4 centers; Distance between nozzle 2 and the nozzle 2 can require to adjust according to cooling intensity.Nozzle 2 end faces to the distance with steel 4 still is L
0, cooling gas is with speed V
0Vertically jet to the surface of band steel 4, rebounded and flow out the gas velocity V of strip edge portion after the pooling from strip edge portion
F1The gas velocity V of strip edge portion with existing bellows panel 8
F0Compare, obviously V
F1Be less than V
F0
Referring to Fig. 6, continuous annealing rapid cooling spray box of the present utility model because the panel 9 of cool wind box be the V font conical surface or cambered surface, the gas of being returned by 4 bounce-backs of band steel just needn't half-twist, but along the radian of panel 9 or tapering to being with the outflow of steel 4 limit portions.By hydromechanical ABC as can be known: these panel 9 designs are the most smooth and easy for gas flow, and the eddy current situation is clearly better, and is less to the gas upset effect of ejection from nozzle 2, a good cooling results of gas.Guaranteeing nozzle 2 end faces and be with 4 of steel apart from L
0Under the constant situation, the panel 9 of bellows middle part is nearer apart from band steel 4, and its cross section is less, and section less gas amount is complementary therewith.Gas volume after bounce-back steel 4 width going along with and increasing, circulation area increases thereupon, has avoided band steel 4 limit portion gas speed sharply to increase, thereby alleviates or eliminate the vibration that band steel 4 limit portions take place.
The utility model can guarantee the fast speed of cooling of continuous annealing with steel not increasing bellows quantity and using under the prerequisite of minimum stable roller, can reduce the gas flow rate of strip edge portion again, the vibration that inhibition or elimination band steel produce when high-speed gas cools off.
Claims (4)
1. the continuous annealing rapid cooling spray box of inhibition zone steel vibration, comprise bellows, nozzle, exhaust gas collection device, interchanger, recirculation blower, recycle gas pipeline, nozzle is installed on the bellows panel, the width of nozzle cover tape steel, one row's nozzle face equates with the distance of band steel, between two row's nozzles, it is characterized in that along the strip width direction about the band steel places, the bellows panel is the V font conical surface or cambered surface, and protuberance is towards the band steel.
2. the continuous annealing rapid cooling spray box of inhibition zone steel vibration according to claim 1 is characterized in that the conical surface of bellows panel or the taper angle of cambered surface and band steel plane formation are 10 °～30 °.
3. the continuous annealing rapid cooling spray box of inhibition zone steel vibration according to claim 1 and 2 is characterized in that the conical surface of bellows panel or cambered surface are positioned at band steel center.
4. the continuous annealing rapid cooling spray box of inhibition zone steel vibration according to claim 1, the nozzle that it is characterized in that being installed on the bellows panel can be cylindric or slit-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620039026 CN2866518Y (en) | 2006-01-18 | 2006-01-18 | Fast cooling spraying box capable of suppressing strap steel vibration for continuous annealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620039026 CN2866518Y (en) | 2006-01-18 | 2006-01-18 | Fast cooling spraying box capable of suppressing strap steel vibration for continuous annealing |
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| Publication Number | Publication Date |
|---|---|
| CN2866518Y true CN2866518Y (en) | 2007-02-07 |
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| CN 200620039026 Expired - Lifetime CN2866518Y (en) | 2006-01-18 | 2006-01-18 | Fast cooling spraying box capable of suppressing strap steel vibration for continuous annealing |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101812581A (en) * | 2010-04-09 | 2010-08-25 | 首钢总公司 | Method for analysis and on-line monitoring of vibration performance of band steel in continuous annealing unit furnace |
| CN101643833B (en) * | 2009-08-20 | 2011-05-25 | 中冶南方(武汉)威仕工业炉有限公司 | Method for manufacturing rapid cooling spray box of annealing furnace of cold rolling vertical type continuous annealing machine set |
| CN101906528B (en) * | 2009-06-08 | 2012-08-29 | 鞍钢股份有限公司 | Method for reducing folding mark defects of cold-rolled steel coil |
| CN104630435A (en) * | 2015-03-17 | 2015-05-20 | 中冶南方(武汉)威仕工业炉有限公司 | Spray box device for inhibiting vibration of strip steel in gas cooling process |
| CN104651599A (en) * | 2015-03-17 | 2015-05-27 | 中冶南方(武汉)威仕工业炉有限公司 | Spray box device for inhibiting vibration of strip steel in gas cooling process |
| CN107287391A (en) * | 2017-06-15 | 2017-10-24 | 广西放心源传媒有限公司 | A kind of condensing unit produced for building sheet |
| CN109201188A (en) * | 2018-10-26 | 2019-01-15 | 湘潭大学 | A kind of high temperature kibbler roll with efficient cooling effect |
| CN110358907A (en) * | 2019-07-19 | 2019-10-22 | 武汉山力板带技术工程有限公司 | A kind of strip cooling device, system and method |
| CN110385562A (en) * | 2018-11-07 | 2019-10-29 | 西马克工程(中国)有限公司 | Preheating section, eventually cold section of spray box processing method |
| WO2020116734A1 (en) * | 2018-12-07 | 2020-06-11 | 주식회사 포스코 | Apparatus for cooling steel sheet |
| CN107457642B (en) * | 2017-08-30 | 2023-09-08 | 天津市宇润德金属制品有限公司 | High-speed processing device for strip steel |
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2006
- 2006-01-18 CN CN 200620039026 patent/CN2866518Y/en not_active Expired - Lifetime
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906528B (en) * | 2009-06-08 | 2012-08-29 | 鞍钢股份有限公司 | Method for reducing folding mark defects of cold-rolled steel coil |
| CN101643833B (en) * | 2009-08-20 | 2011-05-25 | 中冶南方(武汉)威仕工业炉有限公司 | Method for manufacturing rapid cooling spray box of annealing furnace of cold rolling vertical type continuous annealing machine set |
| CN101812581A (en) * | 2010-04-09 | 2010-08-25 | 首钢总公司 | Method for analysis and on-line monitoring of vibration performance of band steel in continuous annealing unit furnace |
| CN101812581B (en) * | 2010-04-09 | 2011-07-20 | 首钢总公司 | Method for analysis and on-line monitoring of vibration performance of band steel in continuous annealing unit furnace |
| CN104630435A (en) * | 2015-03-17 | 2015-05-20 | 中冶南方(武汉)威仕工业炉有限公司 | Spray box device for inhibiting vibration of strip steel in gas cooling process |
| CN104651599A (en) * | 2015-03-17 | 2015-05-27 | 中冶南方(武汉)威仕工业炉有限公司 | Spray box device for inhibiting vibration of strip steel in gas cooling process |
| CN107287391A (en) * | 2017-06-15 | 2017-10-24 | 广西放心源传媒有限公司 | A kind of condensing unit produced for building sheet |
| CN107457642B (en) * | 2017-08-30 | 2023-09-08 | 天津市宇润德金属制品有限公司 | High-speed processing device for strip steel |
| CN109201188A (en) * | 2018-10-26 | 2019-01-15 | 湘潭大学 | A kind of high temperature kibbler roll with efficient cooling effect |
| CN110385562A (en) * | 2018-11-07 | 2019-10-29 | 西马克工程(中国)有限公司 | Preheating section, eventually cold section of spray box processing method |
| CN110385562B (en) * | 2018-11-07 | 2021-07-16 | 西马克工程(中国)有限公司 | Preheating section and final cooling section spray box processing method |
| KR102209602B1 (en) * | 2018-12-07 | 2021-01-28 | 주식회사 포스코 | Cooling apparatus for steel sheet |
| KR20200069681A (en) * | 2018-12-07 | 2020-06-17 | 주식회사 포스코 | Cooling apparatus for steel sheet |
| CN113015819A (en) * | 2018-12-07 | 2021-06-22 | Posco公司 | Steel plate cooling device |
| WO2020116734A1 (en) * | 2018-12-07 | 2020-06-11 | 주식회사 포스코 | Apparatus for cooling steel sheet |
| JP2022507933A (en) * | 2018-12-07 | 2022-01-18 | ポスコ | Steel plate cooling device |
| JP7266678B2 (en) | 2018-12-07 | 2023-04-28 | ポスコ カンパニー リミテッド | Steel plate cooling device |
| CN113015819B (en) * | 2018-12-07 | 2023-09-08 | 浦项股份有限公司 | Steel plate cooling device |
| CN110358907A (en) * | 2019-07-19 | 2019-10-22 | 武汉山力板带技术工程有限公司 | A kind of strip cooling device, system and method |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070207 |
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| EXPY | Termination of patent right or utility model |