CN202530142U - Device for cooling aerial fog after hot galvanizing of strip steels - Google Patents
Device for cooling aerial fog after hot galvanizing of strip steels Download PDFInfo
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- CN202530142U CN202530142U CN2012201215492U CN201220121549U CN202530142U CN 202530142 U CN202530142 U CN 202530142U CN 2012201215492 U CN2012201215492 U CN 2012201215492U CN 201220121549 U CN201220121549 U CN 201220121549U CN 202530142 U CN202530142 U CN 202530142U
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- atomizing
- cooling
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Abstract
The utility model relates to the field of hot galvanizing, in particular relates to a device for cooling aerial fog after hot galvanizing of strip steels. The device for cooling aerial fog after hot galvanizing of strip steels is characterized in that a spray box is internally provided with a plurality of layers of atomization cooling mechanisms; the atomization cooling mechanisms respectively comprise an air flue, a water nozzle and an atomizing gas orifice; the water nozzles are arranged corresponding to the atomization gas orifices; the water nozzles are communicated with water pipes; the air flues are connected with air inlet pipes through distribution boxes; the air flues are divided into a plurality of layers of symmetric atomization cooling areas by virtue of a plurality of partition boards from the middle to two sides; the atomization gas distribution boxes are internally provided with a plurality of distribution air pipes; an independent control valve is arranged on each distribution air pipe; and the distribution air pipes are communicated with the atomization cooling areas in one-to-one correspondence. According to the device for cooling aerial fog after hot galvanizing of strip steels, even temperature distribution is obtained in the width direction of the strip steels, so that better plate shapes can be obtained at high cooling speeds, thicker hot galvanized strip steels which are thicker than 2.0mm can be produced and the problem of coating pulverization of hot galvanized alloyed products is improved more apparently.
Description
Technical field
The utility model relates to the pot galvanize field, relates in particular to a kind of band steel pot galvanize plating back aerosol refrigerating unit.
Background technology
Band steel hot-dip galvanized alloy temperature generally is controlled between 500～550 ℃, goes out about 430 ℃ of zinc pot temperatures far above the band steel.Solidify for guaranteeing that coating is accomplished, avoid being with steel sticking zinc when the contact top roller, the temperature of band steel when arriving top roller for up section need be controlled at below 300 ℃.The plating postcooling adopts jet cooling usually; Because of speed of cooling is lower, cooling time is longer, cools off fully in order to ensure plating back band steel; The plating postcooling tower of coating thermal treatment and thick steel plates galvanizing line is very high; The stability of band steel can not guarantee, can significantly reduce cooling length after the cooling of employing aerosol, can also improve the quality of band steel simultaneously.
Spray cooling is to adopt water droplet and gaseous mixture to be directly injected to belt steel surface with very fast rate of cooling cooling zone steel and the controlled technology of terminal temperature.Its advantage mainly shows as following several aspect: 1) coefficient of heat transfer can shorten cooling time and cooling length much larger than jet cooling; 2) can come controlled chilling speed through regulating the atomizing water yield; 3) rate of cooling belongs to medium level, and between jet cooling and shrend, belt plate shape is good; 4) the speed of cooling height has obvious improvement to quality of coating, and the cooling terminal temperature can be controlled in 400～250 ℃, but band steel automatic drying.
During the cooling of alloying Coated Steel, adopt the aerosol cooling, boiling heat transfer will pass through the transition boiling zone.Because in the transition boiling zone; Belt steel surface can produce air film causes the belt steel surface temperature distributing disproportionation even; Therefore among U.S. Pat 2001/0000377 A1 a kind of pot galvanize aerosol refrigerating unit after alloying is disclosed; As shown in Figure 1, mainly comprise zinc pot 1', steel band 2', air knife 3', heating zone 4', soaking zone 5', high water yield aerosol cooling section 6', low wash water aerosol cooling section 7', deflector roll 8' and sinking roller 9'.The aerosol cooling zone is divided into high water yield cooling zone and low wash water cooling zone, and the high-temperature zone adopts high water yield cooling to help reducing the influence of air film, realizes evenly cooling.This refrigerating unit has just solved the even cooling of band steel traffic direction, does not mention the control method to temperature distribution on the strip width direction.
Cold excessively for preventing strip edge portion, guarantee that strip width direction temperature is even, existing production unit is employed in the method accommodation zone steel width temperature distribution that baffle plate is installed in the spray box, mainly is made up of cooling spray box, controllable register, band steel and regulating mechanism.This apparatus features is that controllable register can move on the strip width direction, and with the local aerosol of isolating of controllable register, aerosol can directly be sprayed onto on the band steel does not need the refrigerative position.This device can come the position of regulating and controlling baffle plate on the strip width direction through regulating mechanism according to strip width, thereby regulates between the effective spraying area that is sprayed onto on the band steel, reaches strip width direction temperature distribution and regulates purpose.This systematic comparison is complicated, and investment is big, breaks down easily, and with casing junction easy to leak water, and baffle plate has considerable influence to aerosol system operation in the bellows.
Summary of the invention
The utility model technical problem to be solved provides a kind of band steel pot galvanize plating back aerosol refrigerating unit; Through aerial fog nozzle being divided into several band steel independent control regions transversely; Guaranteed that band steel temperature on the strip width direction when aerosol cools off in plating back is even; And can realize accurate control through the injection flow rate of control band steel traffic direction to band steel speed of cooling, can be used for after pot galvanize, hot-dip aluminizing zinc and the pot galvanize the quick cooling unit of band steel after the Alloying Treatment.
The utility model is achieved in that a kind of band steel pot galvanize plating back aerosol refrigerating unit, comprises tightness system, spray box, casing, atomizing gas distributor box and water pipe, and said distributor box is installed in the casing both sides; Said spray box is installed in the casing, and said casing top has the band steel exports, and bottom half has band steel inlet; Both sides, casing top have the aerosol drain, and said tightness system is installed in and is positioned at band steel ingress in the casing, is provided with several layers atomizing cooling body in the described spray box; The atomizing cooling body comprises air channel, water spouting nozzle and atomization gas spray orifice; The corresponding setting of water spouting nozzle with the atomization gas spray orifice, said water spouting nozzle is connected with water pipe, and the air channel links to each other with blast pipe through distributor box; Said air channel is separated into several layers symmetric atomizing cooled region by the centre to both sides by some dividing plates; Be provided with some branch aid distributing pipes in the described atomizing gas distributor box, all be provided with independently valve on every branch aid distributing pipe, divide aid distributing pipe and the corresponding one by one connection of atomizing cooled region.
Said air channel is separated into by the three layer atomizing cooled region of centre to both sides by dividing plate; Atomizing cooling zone, the second atomizing cooling zone and atomizing cooling zone, the outside in the middle of three layers of atomizing cooled region are respectively; Said distributor box is provided with three branch aid distributing pipes of suit layer by layer; Aid distributing pipe was communicated with middle atomizing cooling zone in outermost minute, and the branch aid distributing pipe in middle layer is communicated with the second atomizing cooling zone, and the branch aid distributing pipe of innermost layer is communicated with atomizing cooling zone, the outside.
Being divided into from top to bottom in the described spray box is 6 layers, and every layer is provided with a pair of atomizing cooling body, and totally 12 atomizing cooling bodies are arranged symmetrically in band steel both sides.
The speed of cooling of the aerosol refrigerating unit may command pot galvanize of the utility model band steel pot galvanize plating back, hot-dip aluminizing zinc band steel, and, guarantee under high speed of cooling, to obtain plate shape preferably in the distribution of strip width direction acquisition homogeneous temp; After existing production line transformed; Adopt the utility model can produce thickness>the thicker hot-dip galvanized steel strip of 2.0mm; Hot-dip galvanized alloy product plating pulverizing problem is had comparatively significantly improvement, and its economic benefit is very considerable, has application value widely.
Description of drawings
Fig. 1 is existing pot galvanize aerosol refrigerating unit structural representation after alloying;
Fig. 2 looks synoptic diagram for the utility model band steel pot galvanize plating back aerosol refrigerating unit structure master;
Fig. 3 overlooks for the utility model band steel pot galvanize plating back aerosol refrigerating unit structure and partly cuts open synoptic diagram;
Fig. 4 is that gas circuit connects synoptic diagram in the utility model band.
Among the figure: 1 band steel; 2 tightness systems; 3 spray boxs; 4 casings; 5 atomizing gas distributor boxes; 6 water pipes; 7 water spouting nozzles; 8 atomization gas spray orifices; 9 aerosol drains; 10 band steel exports; 11 band steel inlets; 12 air channels; 13 dividing plates; 14 blast pipes; 15 fens aid distributing pipes; 16 valves; Atomizing cooling zone in the middle of 20; 21 second atomizing cooling zones; Atomizing cooling zone, 22 outsides; 1' zinc pot; The 2' steel band; The 3' air knife; The 4' heating zone; The 5' soaking zone; The high water yield aerosol of 6' cooling section; 7' low wash water aerosol cooling section; The 8' deflector roll; The 9' roller that sinks.
Embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction the utility model scope.Should be understood that in addition those skilled in the art can do various changes or modification to the utility model after the content of having read the utility model statement, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Like Fig. 2, shown in 3, a kind of band steel pot galvanize plating back aerosol refrigerating unit comprises tightness system 2, spray box 3, casing 4, atomizing gas distributor box 5 and water pipe 6; Said distributor box 5 is installed in casing 4 both sides; Said spray box 3 is installed in the casing 4, and said casing 4 tops have band steel exports 10, and casing 4 bottoms have band steel inlet 11; Both sides, casing 4 top have aerosol drain 9; Said tightness system 2 is installed in and is positioned at band steel 11 places that enter the mouth in the casing 4, and the passage that casing 4 has 1 turnover of band steel except upper and lower ends is a relative casing that seals with top has the aerosol drain 9 that links to each other with discharge tube; Be provided with several layers atomizing cooling body in the described spray box 3; The atomizing cooling body comprises air channel 12, water spouting nozzle 7 and atomization gas spray orifice 8; Water spouting nozzle 7 and the 8 corresponding settings of atomization gas spray orifice; Said water spouting nozzle 7 is connected with water pipe 6, and air channel 12 links to each other with blast pipe 14 through distributor box 5, and the wind of atomization gas spray orifice 8 ejections and water spouting nozzle 7 effusive water water intersections are mixed the back and formed the cooling aerosol; Said air channel 12 is separated into several layers symmetric atomizing cooled region by the centre to both sides by some dividing plates 13; Be provided with some branch aid distributing pipes 15 in the described atomizing gas distributor box 5; All be provided with independently valve 16 on every branch aid distributing pipe 15, divide aid distributing pipe 15 and the corresponding one by one connection of atomizing cooled region.
In the utility model, in order to guarantee the even cooling of band steel traffic direction, being divided into from top to bottom in the described spray box 3 is 6 layers, and every layer is provided with a pair of atomizing cooling body, and totally 12 atomizing cooling bodies are arranged symmetrically in band steel 1 both sides.
In the present embodiment; As shown in Figure 4; Said air channel 12 is separated into by the three layer atomizing cooled region of centre to both sides by dividing plate 13; Atomizing cooling zone 20, the second atomizing cooling zone 21 and atomizing cooling zone 22, the outside in the middle of three layers of atomizing cooled region are respectively, said distributor box 5 is provided with three branch aid distributing pipes 15 of suit layer by layer, and aid distributing pipe was communicated with middle atomizing cooling zone 20 in outermost minute; The branch aid distributing pipe in middle layer is communicated with the second atomizing cooling zone 21, and the branch aid distributing pipe of innermost layer is communicated with atomizing cooling zone 22, the outside.
Atomizing cooling body in the present embodiment in the spray box 3 is regulated separately by valve 16 in 3 cooling zones that independently atomize that transversely are divided into of the band steel that is cooled.When band steel 1 medium-width, the atomizing air that can close atomizing cooling zone 22, the outside when narrower, can continue to close the atomizing air of the second atomizing cooling zone 21.Can regulate separately because of each district's air quantity, also can control the aerosolization water yield longitudinally in the bellows according to belt steel thickness.Thereby reach make the band steel on width temperature homogeneity and according to belt steel thickness controlled chilling speed.
Aerosol refrigerating unit of the present invention can be used for newly-built pot galvanize, hot-dip aluminizing zinc production line, also can be used for the transformation to existing hot-dip galvanized alloy production line, hot-dip aluminizing zinc production line.During cooling, band steel 1 gets into casing 4 from the band steel inlet 11 of casing 4 bottoms, moves from bottom to top, and goes out from the band steel exports 10 at casing 4 tops; Tightness system 2 is used to stop steam and water of condensation to flow out from the band steel inlet 11 of casing 4 bottoms, guarantees to produce and the safety of equipment.The wind of blower fan is divided into symmetric three the tunnel from blast pipe 14 and gets into the air channel of middle atomizing cooling zone 20, the second atomizing cooling zone 21 and atomizing cooling zone, the outside 22 correspondences separately behind distributor box 5, and sprays from spray box 3 corresponding atomization gas spray orifices 8 respectively; Simultaneously, water flows out from the water spouting nozzle 7 on the spray box 3 through water pipe 6; The gas of water spouting nozzle 7 effusive water from the spray box 3 and 8 ejections of atomization gas spray orifice intersects and mixes the aerosol that the back forms and be directly injected to band steel 1 surface, and the band steel is cooled off fast.Cooled band steel is gone out through the band steel exports 10 at casing 4 tops.The air after the completion cooling task and the steam of partly gasification are discharged through aerosol drain 9.The water coolant of gasification or water of condensation be not owing to the sealing of tightness system 2, and the entering casing is discharged through drainage pipeline behind 4 bottoms.Speed of cooling can accurately be controlled through the distribution of regulating pondage and adjusting atomizing air.
Claims (3)
1. a band steel pot galvanize plating back aerosol refrigerating unit comprises tightness system (2), spray box (3), casing (4), atomizing gas distributor box (5) and water pipe (6), and said distributor box (5) is installed in casing (4) both sides; Said spray box (3) is installed in the casing (4); Said casing (4) top has band steel exports (10), and casing (4) bottom has band steel inlet (11), and casing (4) both sides, top have aerosol drain (9); Said tightness system (2) is installed in to be positioned in the casing (4) is with steel inlet (11) to locate; It is characterized in that: be provided with several layers atomizing cooling body in the described spray box (3), the atomizing cooling body comprises air channel (12), water spouting nozzle (7) and atomization gas spray orifice (8), water spouting nozzle (7) and the corresponding setting of atomization gas spray orifice (8); Said water spouting nozzle (7) is connected with water pipe (6); Air channel (12) links to each other with blast pipe (14) through distributor box (5), and said air channel (12) are separated into several layers symmetric atomizing cooled region by the centre to both sides by some dividing plates (13), are provided with some branch aid distributing pipes (15) in the described atomizing gas distributor box (5); All be provided with independently valve (16) on every branch aid distributing pipe (15), divide aid distributing pipe (15) and the corresponding one by one connection of atomizing cooled region.
2. band steel pot galvanize plating as claimed in claim 1 back aerosol refrigerating unit; It is characterized in that: said air channel (12) are separated into by the three layer atomizing cooled region of centre to both sides by dividing plate (13); Atomizing cooling zone (20), the second atomizing cooling zone (21) and atomizing cooling zone (22), the outside in the middle of three layers of atomizing cooled region are respectively; Said distributor box (5) is provided with three branch aid distributing pipes (15) of suit layer by layer; Aid distributing pipe was communicated with middle atomizing cooling zone (20) in outermost minute, and the branch aid distributing pipe in middle layer is communicated with the second atomizing cooling zone (21), and the branch aid distributing pipe of innermost layer is communicated with atomizing cooling zone, the outside (22).
3. according to claim 1 or claim 2 band steel pot galvanize plating back aerosol refrigerating unit, it is characterized in that: being divided into from top to bottom in the described spray box (3) is 6 layers, and every layer is provided with a pair of atomizing cooling body, and totally 12 atomizing cooling bodies are arranged symmetrically in band steel (1) both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201215492U CN202530142U (en) | 2012-03-28 | 2012-03-28 | Device for cooling aerial fog after hot galvanizing of strip steels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201215492U CN202530142U (en) | 2012-03-28 | 2012-03-28 | Device for cooling aerial fog after hot galvanizing of strip steels |
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| Publication Number | Publication Date |
|---|---|
| CN202530142U true CN202530142U (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201215492U Expired - Lifetime CN202530142U (en) | 2012-03-28 | 2012-03-28 | Device for cooling aerial fog after hot galvanizing of strip steels |
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| CN (1) | CN202530142U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109457205A (en) * | 2019-01-04 | 2019-03-12 | 重庆赛迪热工环保工程技术有限公司 | Air wetting cooling means and cooling system after a kind of plating of strip |
-
2012
- 2012-03-28 CN CN2012201215492U patent/CN202530142U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109457205A (en) * | 2019-01-04 | 2019-03-12 | 重庆赛迪热工环保工程技术有限公司 | Air wetting cooling means and cooling system after a kind of plating of strip |
| CN109457205B (en) * | 2019-01-04 | 2023-12-19 | 重庆赛迪热工环保工程技术有限公司 | Air humidifying and cooling method and cooling system for strip steel after plating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121114 |
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| CX01 | Expiry of patent term |