CN205599891U - Novel billet casting secondary cooling water adjustment mechanism - Google Patents
Novel billet casting secondary cooling water adjustment mechanism Download PDFInfo
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- CN205599891U CN205599891U CN201620275315.1U CN201620275315U CN205599891U CN 205599891 U CN205599891 U CN 205599891U CN 201620275315 U CN201620275315 U CN 201620275315U CN 205599891 U CN205599891 U CN 205599891U
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Abstract
The utility model provides a novel billet casting secondary cooling water adjustment mechanism, includes adjustable secondary cooling water's the frame that sprays, and adjustable secondary cooling water's the frame that sprays the frame including the inner arc, and the outer arc sprays the frame, and the inner arc sprays frame and outer arc and sprays and all be provided with relative in a plurality of outer arc nozzle of spout on the frame perpendicularly, and the inner arc sprays the left and right sides that frame and outer arc sprayed the frame and is provided with the left side respectively and sprays frame and right side and spray the frame, and the left side sprays that put up and the right side sprays to put up and all is provided with a plurality of side nozzle of left and right sides that the spout is relative perpendicularly, every sprays frame end portion and all has water inlet pipe connector and the intake pipe joint who couples usefulness with the workshop piping, during the use, will spray frame and the connection of workshop piping, the switch -on of realization aqueous vapor through metal collapsible tube, the problem of can not be divided into a plurality of districts with two cold -zones owing to consider manufacturing, loading and unloading with maintenance, equipment cost etc. Lead to the fact cool off the water yield can not the fine adjustment, the cooling effect is not good is solved, the utility model discloses can be under cost -effective prerequisite, the regulating pondage that becomes more meticulous makes the actual water current density of secondary cooling water be close theoretical water current density as far as possible, is showing and is improving the casting blank quality.
Description
Technical field
This utility model relates to billet continuous casting Secondary Cooling field, is specifically related to a kind of novel billet continuous casting
Secondary cooling water governor motion.
Background technology
Along with the high speed development of continuous casting technology, and the raising that slab quality is required by market, cooling twice is asked
Topic is more and more paid attention to.Two cold purposes be make strand leave crystallizer be followed by by continuous coo1ing and
Solidify completely in the shortest time, to improve the production capacity of casting machine.Cooling water inflow is along strand length direction
Distribution, strand the most down moves from crystallizer, and casting blank surface temperature gradually reduces, and green shell thickens, institute
Gradually reducing from top to bottom with secondary coolingwater (intensity of cooling), the jet density of needs is gradually reduced.For arc
For conticaster, inner arc, extrados cooling water cooling effectiveness be discrepant, often have due to intrados to
Water, and water droplet of spraying water on extrados is difficult on strand face stop, so should consider design when
The difference of the interior outer arc water yield.
Continuous casting billet is during cooling twice, it is desired to the surface temperature of strand is smoothed in the range of controlling
Cross, reduce fluctuation as far as possible, good inside and outside quality could be obtained.
(1) slab cooling intensity is suitable.The intensity of cooling needed at different region continuous casting billets is different.
(2) uniformly cool down.Ensureing under conditions of intensity of cooling, avoiding local casting billet surface temperature drop is too fast making temperature
Degree stress suddenly increases and causes face crack.
(3) high efficiency cooling.Reasonably gas-water ratio realizes efficiently cooling.
(4) casting blank surface temperature control one reasonably in the range of, to ensure the bulge amount formed between roller
Minimum;But avoid the black brittleness district (700~900) at steel to align.
To achieve these goals, current billet caster all uses zonal control secondary coolingwater, as far as possible
Make the secondary coolingwater of reality close to target secondary coolingwater.But due to consider processing and manufacturing, load and unload and keep in repair,
The problems such as equipment cost, and be not able to can only be divided into two cold-zones according to conditions such as different steel grades, pulling rates
3~4 cooling zones control respectively.Owing to two cold-zones artificially divide, often owing to objective factor is
Having two cold-zones to divide unreasonable, same cooled region intensity of cooling is identical, but the intensity of cooling being actually needed
Gradually change.Cooling jet density can not seamlessly transit naturally, and secondary coolingwater can not accurately regulate, cold
But poor effect problem.Cause the slab quality can not be up to standard.
After two territory, cold-zone zonal control of square billet, the water yield of each cooling zone is the same at present, for rectangular bloom
Speech, in same cooling zone, the nozzle of outer arc is the same, and the nozzle of left and right sides is the same.Difference that can only be thicker controls
Secondary cooling water.Want jet density is fine-tuned, obtain more preferable slab quality, two current cold control methods
This requirement cannot be realized with mechanism.
In order to obtain more preferable slab quality, the water yield of two cold water spray water must be tried one's best close to the target water yield, this
Just require that the water yield along strand throwing direction secondary cooling water is gradually reduced, it is possible to regulate piecemeal.But due to mesh
The division institution of front secondary cooling water and two cool equipment structures of satisfied two cold division institutions, each two cold-zone
The water yield is the same, simply when producing rectangular bloom interior outer arc different with the nozzle of left and right sides come regulating pondage.
A cooling zone, alongst cannot regulating pondage.
Wanting to become more meticulous regulating pondage can be from the standpoint of following two.It is more that two cold subregions are divided by one
Subregion is thinner, but subregion increases, the meters equipment such as control and regulation valve that water system needs, effusion meter
And pipeline all can increase.First increasing these equipment production costs to be certain to increase much, maintenance also adds
Greatly, furthermore the space of the more complicated needs of system is bigger, inadequate for old conticaster possible space, it is impossible to
Newly-increased equipment is installed.For generally the most uneconomical.
It two can keep current two cold subregions constant, installs different an internal different position of cooling
Nozzle realizes the regulation of water yield differentiation.But thus need number of types of nozzle, Operational preparation part times
Increasing, production cost improves, and nozzle model is easily installed mistake too much, may run counter to desire, cause
Unnecessary trouble.
Understanding based on above analysis, in order to realize reducing investment, become more meticulous regulating pondage, makes secondary cooling water stream close
Degree is as far as possible close to target jet density, and current method and apparatus cannot realize.
Summary of the invention
For the problem overcoming above-mentioned prior art to exist, the purpose of this utility model is to provide a kind of novel
Billet continuous casting secondary cooling water governor motion, solve due to consider processing and manufacturing, load and unload and keep in repair, equipment cost
It is not able to etc. problem two cold-zones are divided into some communities, causes cooling water inflow can not be fine-tuned, cool down effect
The best problem of fruit;This utility model can be on the premise of cost-effective, and become more meticulous regulating pondage, makes two cold
The actual jet density of water is tried one's best close to theoretical water current density, significantly improves slab quality.
In order to achieve the above object, this utility model is by the following technical solutions:
A kind of novel billet continuous casting secondary cooling water governor motion, including the spraying rack of adjustable secondary cooling water, described adjustable
The spraying rack of secondary cooling water includes inner arc spraying rack 1, outer arc spraying rack 4, inner arc spraying rack 1 and outer arc spraying rack
The multiple interior outer arc nozzle 5 that spout is relative, inner arc spraying rack 1 and outer arc spraying rack 4 all it is vertically installed with on 4
The left and right sides be respectively arranged with left side spraying rack 2 and right side spraying rack 3, left side spraying rack 2 and right side spray
Multiple left and right sides nozzles 6 that spout is relative all it are vertically installed with on frame 3;Described inner arc spraying rack 1, outer arc spray
Drench frame 4, left side spraying rack 2 and right side spraying rack 3 all weld together, each spraying rack end with
The admitting pipe joint of workshop pipe arrangement connection and air inlet pipe joint, during use, by metal hose by spraying rack
Connect with workshop pipe arrangement, it is achieved aqueous vapor is connected.
Described interior outer arc nozzle 5 is same model, and described left and right sides nozzle 6 is same model.
Described right side spraying rack 3 includes that the right side spraying rack water inlet pipe 9 welded together and right side spraying rack enter
Trachea 10;Described left and right sides nozzle 6 connects reality by nozzle water supply hose 7 with right side spraying rack water inlet pipe 9
The connection of existing water route;Described left and right sides nozzle 6 rear end is provided with the nozzle choke block 8 of regulation gas pressure, described
Left and right sides nozzle 6 and nozzle choke block 8 are entered with right side spraying rack by bolt 11, nut 12 and packing ring 13
Trachea 10 connection realizes gas circuit connection;Described inner arc spraying rack 1, outer arc spraying rack 4 and left side spraying rack 2
Identical with the attachment structure of right side spraying rack 3.
Described nozzle choke block 8 is the adjustable baffle plate of central aperture and aperture.By adjustment aperture regulate into
Enter the gas-water ratio of nozzle.
The quantity of described interior outer arc nozzle 5 and left and right sides nozzle 6 is 6.
The most relatively, this utility model possesses following advantage:
1. two cold water spray water can be fine-tuned, and equipment cost is low.
2. control method is simple, and electric control system is without amendment.
3. can use on newly-designed casting machine, also can use on the old casting machine of transformation;Strong adaptability.
4. in the case of secondary cooling water is fine-tuned, equipment constitutes simple.
5. slab cooling intensity is more reasonable, and cooling is more uniform, improves cooling effectiveness, effectively controls casting
Base surface temperature.
6. reach to cool down on the premise of strand is actually needed the water yield and save secondary cooling water.
7. can significantly improve slab quality.
In a word, this utility model provides a kind of novel billet continuous casting secondary cooling water governor motion, solve by
In consider processing and manufacturing, load and unload with keep in repair, two cold-zones are divided into some little by the problem such as equipment cost and not being able to
District, causes cooling water inflow accurately not regulate, the best problem of cooling effect.
This utility model can be on the premise of cost-effective, and become more meticulous regulating pondage, makes the actual water of secondary cooling water
Current density is as far as possible close to theoretical water current density, and control method is simple, and equipment constitutes simple, saves secondary cooling water,
Significantly improve slab quality.
Accompanying drawing explanation
Fig. 1 is spraying cooling water theory density profile figure.
Fig. 2 is the systematic schematic diagram of existing two cold zonal control spraying cooling water later.
Fig. 3 is spraying cooling water actual density scattergram after existing two cold zonal control.
Fig. 4 this utility model can regulate the front view of the spraying rack structure of secondary cooling water.
Fig. 5 be Fig. 4 along A-A to sectional view.
Fig. 6 is the partial enlarged drawing of Fig. 5.
Fig. 7 uses spraying cooling water density distribution after this utility model novel secondary cooling water control method and structure
Figure.
Detailed description of the invention
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings.
As it is shown in figure 1, spraying cooling water theory Density Distribution.In figure, abscissa is cooling zone length, vertical seat
Being designated as unit length cooling water inflow, curve is theoretical secondary cooling water Density Distribution.In order to obtain good strand matter
Amount, requires that the distribution of secondary cooling water gradually decreases from top to bottom along throwing direction, the water yield of casting billet surface in theory
Density profile smooth and continuous.
As in figure 2 it is shown, the systematic schematic diagram of spraying cooling water after existing two cold zonal control.With two cold II
As a example by district, two current cold employing vapor-water cooling, cooling water, cooling gas are eventually arrived at by respective pipeline
Nozzle, final ejection after nozzle mixes, due to the effect of two cold compression air, secondary cooling water is atomized.
Air water spray cooling intensity by spraying cold performance parameter determine, mainly have jet density, droplet size,
Droplet impact velocity, these characterisitic parameters can be changed by regulation hydraulic pressure and the operating position of air pressure.I.e.
The control to intensity of cooling can be realized by regulation gas-water ratio.For a certain nozzle, adjustable parameter is only
Air pressure and hydraulic pressure, by adjust gas-water ratio change cold performance parameter (jet density, droplet impact velocity,
Droplet sizes), thus adjust intensity of cooling.
From figure 2 it can be seen that current this zonal control mode, the water yield of a cooling zone can be passed through
On regulation water route, the pressure regulator valve in pneumatic control valve and gas circuit realizes the remote adjustment of cooling water inflow.But one
Often there is certain length individual cooling zone, and cooling is internal multiple nozzle, and the water yield within cooling zone is
Identical, so the water yield internal for a cooling zone cannot regulate.
As it is shown on figure 3, spraying cooling water actual density distribution after existing two cold zonal control.Horizontal seat in figure
Being designated as cooling zone length, vertical coordinate is unit length cooling water inflow, and curve is theoretical secondary cooling water Density Distribution,
Block diagram is actual secondary cooling water Density Distribution.By spraying cooling water after the current two cold zonal control of Fig. 2
System principle map analysis understands, and the cooling water inflow within same cooling is identical, if therefore by two cold-zones
Be divided into four cooling zones, then actual cooling water density will be as it is shown on figure 3, be a stepped jump
Formula, and theoretical cooling water density has a certain distance.
Based on above-mentioned several respects reason, in order to make actual cooling water density as far as possible close to theoretical cooling watertight
Degree such that it is able to obtain more preferable slab quality, it is necessary to have a kind of new secondary cooling water control method and structure.
The most just combine accompanying drawing and introduce this utility model novel billet continuous casting secondary cooling water governor motion.
As shown in Figure 4 and Figure 5, for billet caster, general cooling zone be divided into 3 to 4 cold
But district, as a example by two cold IIth district, novel billet continuous casting secondary cooling water governor motion includes the spray of adjustable secondary cooling water
Frame, the spraying rack of described adjustable secondary cooling water includes inner arc spraying rack 1, outer arc spraying rack 4, inner arc spraying rack 1
The multiple interior outer arc nozzle 5 relative with being all vertically installed with spout on outer arc spraying rack 4, inner arc spraying rack 1 He
The left and right sides of outer arc spraying rack 4 is respectively arranged with left side spraying rack 2 and right side spraying rack 3, left side spraying rack
The 2 multiple left and right sides nozzles 6 relative with being all vertically installed with spout on right side spraying rack 3;Described inner arc sprays
Frame 1, outer arc spraying rack 4, left side spraying rack 2 and right side spraying rack 3 all weld together, each spraying rack
End is all with the admitting pipe joint coupled with workshop pipe arrangement and air inlet pipe joint, after equipment is reached the standard grade, logical
Cross metal hose spraying rack and workshop pipe arrangement to be connected, it is achieved aqueous vapor is connected.Between spraying rack and apparatus body
Couple and use traditional pin, wedge connecting mode, there is no special requirement.In figure, 14 enter for right side
Water pipe head, 15 it is right side air inlet pipe joint.
The installing space that this utility model governor motion needs on equipment is little, and trachea and water pipe are welded on
After together, the rigidity of whole spraying rack is very significantly improved, it is to avoid the deformation of spraying rack and the spray that causes
Nozzle spray angle, the change of jet length cause the decline of slab quality.
Spraying rack is coupled by flexible pipe with workshop pipe arrangement, and dismounting and change is the most very convenient, it is simple to the maintenance of post facility.
Such as the signal of transverse section that Fig. 5 major embodiment intermediate rectangular is strand, mainly express nozzle, spraying rack with
Relation between strand.
As preferred implementation of the present utility model, described interior outer arc nozzle 5 is same model, a described left side
Right side nozzles 6 is same model.There are two kinds of nozzles in whole IIth district.Air water spray cooling intensity is cold by spraying
Step response parameter determines, mainly has jet density, droplet size, droplet impact velocity, and these characteristics are joined
Number can be changed by regulation hydraulic pressure and the operating position of air pressure.I.e. can be realized by regulation gas-water ratio
Control to intensity of cooling.
As shown in Figure 6, described right side spraying rack 3 includes right side spraying rack water inlet pipe 9 He welded together
Right side spraying rack air inlet pipe 10;Described left and right sides nozzle 6 is entered with right side spraying rack by nozzle water supply hose 7
Water pipe 9 connection realizes water route connection;Described left and right sides nozzle 6 rear end is provided with the nozzle of regulation gas pressure
Choke block 8, described left and right sides nozzle 6 and nozzle choke block 8 are by bolt 11, nut 12 and packing ring 13
Connecting with right side spraying rack air inlet pipe 10 and realize gas circuit connection, last air water enters 6 nozzle interior mixing, warp
Cross nozzle ejection aerosol and arrive casting billet surface, play the effect of cooling strand.Described inner arc spraying rack 1, outer arc
Spraying rack 4 is identical with the attachment structure of right side spraying rack 3 with left side spraying rack 2.
Described nozzle choke block 8 is the adjustable baffle plate of central aperture and aperture.Regulated by adjustment aperture
Enter the gas-water ratio of nozzle.In order to obtain different intensities of cooling, need difference at different cooling positions
Cooling water inflow.The purpose of regulating pondage is reached by changing different nozzle choke blocks 8.Nozzle saves
Stream plate 8 is the plank of central aperture, realizes regulating the effect of air pressure by changing the size in aperture,
And then realize the purpose of regulating pondage.
For a certain nozzle, adjustable parameter only has air pressure and hydraulic pressure, changes cold conditions by adjusting gas-water ratio
Characterisitic parameter (jet density, droplet impact velocity, droplet sizes), thus adjust intensity of cooling.This
Utility model is by changing the aperture before gas entrance nozzle, thus realizes regulating the work of gas pressure
With, and then reach to regulate the purpose of gas-water ratio control jet density.Particular by the spray at diverse location
Mouth uses different nozzle choke blocks 8, and realizes above-mentioned purpose.As it is shown in figure 5, on every spraying rack
Having 6 nozzles, it is different for draining into the 6th row's nozzle choke block from first, by regulation tolerance, reaches
Effect to regulation jet density.
As it is shown in fig. 7, use spraying cooling watertight after this utility model novel secondary cooling water control method and structure
Degree distribution.Cooling water flow owing to being actually needed at same cooling zone diverse location is different, passes through
After using novel secondary cooling water governor motion, can be by using corresponding nozzle to throttle in different positions
Plate, i.e. can realize the regulation that becomes more meticulous of secondary cooling water, it is achieved seamlessly transitting of secondary cooling water, as far as possible close to reason
Opinion secondary cooling water Density Distribution, obtains more preferable slab quality.
In sum, this utility model can be on the premise of cost-effective, and become more meticulous regulating pondage, makes
The actual jet density of secondary cooling water is as far as possible close to theoretical water current density, and control method is simple, and equipment constitutes simple,
Save secondary cooling water, significantly improve slab quality.
Claims (5)
1. a novel billet continuous casting secondary cooling water governor motion, including the spraying rack of adjustable secondary cooling water, its feature
It is: the spraying rack of described adjustable secondary cooling water includes inner arc spraying rack (1), outer arc spraying rack (4), inner arc
The multiple interior outer arc nozzle (5) that spraying rack (1) is relative with being all vertically installed with spout on outer arc spraying rack (4),
The left and right sides of inner arc spraying rack (1) and outer arc spraying rack (4) be respectively arranged with left side spraying rack (2) and
Right side spraying rack (3), left side spraying rack (2) and right side spraying rack (3) are all vertically installed with spout phase
To multiple left and right sides nozzles (6);Described inner arc spraying rack (1), outer arc spraying rack (4), left side spray
Frame (2) and right side spraying rack (3) all weld together, each spraying rack end with workshop pipe arrangement
The admitting pipe joint coupled and air inlet pipe joint, during use, joined spraying rack and workshop by metal hose
Pipe connects, it is achieved aqueous vapor is connected.
One the most according to claim 1 novel billet continuous casting secondary cooling water governor motion, it is characterised in that:
Described interior outer arc nozzle (5) is same model, and described left and right sides nozzle (6) is same model.
One the most according to claim 1 novel billet continuous casting secondary cooling water governor motion, it is characterised in that:
Described right side spraying rack (3) includes right side spraying rack water inlet pipe (9) and the right side spraying rack welded together
Air inlet pipe (10);Described left and right sides nozzle (6) is intake with right side spraying rack by nozzle water supply hose (7)
Pipe (9) connection realizes water route connection;Described left and right sides nozzle (6) rear end is provided with regulation gas pressure
Nozzle choke block (8), described left and right sides nozzle (6) and nozzle choke block (8) pass through bolt (11), spiral shell
Female (12) and packing ring (13) connect with right side spraying rack air inlet pipe (10) and realize gas circuit and connect;In described
Arc spraying rack (1), outer arc spraying rack (4) and left side spraying rack (2) and the connection of right side spraying rack (3)
Structure is identical.
One the most according to claim 3 novel billet continuous casting secondary cooling water governor motion, it is characterised in that:
Described nozzle choke block (8) is the adjustable baffle plate of central aperture and aperture;Entrance is regulated by adjustment aperture
The gas-water ratio of nozzle.
One the most according to claim 3 novel billet continuous casting secondary cooling water governor motion, it is characterised in that:
In each cooling zone, the quantity of described interior outer arc nozzle (5) and left and right sides nozzle (6) is 6.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105642854A (en) * | 2016-04-05 | 2016-06-08 | 中国重型机械研究院股份公司 | Novel square billet continuous casting secondary cooling water adjusting structure |
CN107020359A (en) * | 2017-05-10 | 2017-08-08 | 攀钢集团攀枝花钢钒有限公司 | The construction technology of casting blank surface temperature can uniformly be reduced |
CN114635017A (en) * | 2022-05-19 | 2022-06-17 | 北京煜鼎增材制造研究院有限公司 | Spray type heat treatment device and heat treatment method for large metal component |
-
2016
- 2016-04-05 CN CN201620275315.1U patent/CN205599891U/en active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105642854A (en) * | 2016-04-05 | 2016-06-08 | 中国重型机械研究院股份公司 | Novel square billet continuous casting secondary cooling water adjusting structure |
CN107020359A (en) * | 2017-05-10 | 2017-08-08 | 攀钢集团攀枝花钢钒有限公司 | The construction technology of casting blank surface temperature can uniformly be reduced |
CN114635017A (en) * | 2022-05-19 | 2022-06-17 | 北京煜鼎增材制造研究院有限公司 | Spray type heat treatment device and heat treatment method for large metal component |
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