CN1016043B - Method and apparatus for cooling metal strip - Google Patents
Method and apparatus for cooling metal stripInfo
- Publication number
- CN1016043B CN1016043B CN 87100594 CN87100594A CN1016043B CN 1016043 B CN1016043 B CN 1016043B CN 87100594 CN87100594 CN 87100594 CN 87100594 A CN87100594 A CN 87100594A CN 1016043 B CN1016043 B CN 1016043B
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- flow
- flow deflector
- cooling
- nozzle
- laminar flow
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Abstract
A laminar flow cooling system employs a laminar flow nozzle comprising a pair of plate members defining slit through which cooling water flows to form a cooling water screen. One of the plate members of the laminar nozzle is deformable at least in a direction perpendicular to the cooling water flow direction to adjust the path area in the nozzle. At least one of the plate member is preferably responsive to the cooling water pressure to cause variation of the path area for adjusting the cooling water path area.
Description
The present invention relates generally to cooling strip material, for example with the apparatus and method of steel etc., relate in particular to a kind of novel cooling facility for laminar flow, this device can form substantially the cooling fluid laminar flow with uniform speed of cooling cooling strip material on the whole width of band.Further the present invention relates to a kind of making as the flow velocity of the cooling fluid of heat-eliminating medium can regulate, thus the cooling facility for laminar flow that cooling efficiency can be regulated.
Cooling facility for laminar flow system is used for cooling zone steel on the band hot rolling line.This refrigerating unit places the band of sending here along the discharging roller-way in order to cooling between finishing mill and the reeling machine.In this cooling facility for laminar flow, usually with water as heat-eliminating medium, and with many bar-shaped streamlined forms, arrange, or transfer to band to extend so that cover the slit laminar flow form of the whole width of band along the strip width direction along the width of band.This cooling facility for laminar flow is higher because of heat transfer coefficient, has the cooling efficiency more higher than shower cooling device.Be to make high pressure water jets in the above-mentioned shower cooling device to band.As everyone knows, adopt this cooling facility for laminar flow to allow high-speed production band steel on band hot rolling line.Especially with regard to the slit laminar flow water coolant, owing to, on strip width, can obtain the height uniform temperature and distribute along the even cooling performance on the band whole width.
Known a kind of cooling facility for laminar flow is " a tubular layer flow cooling device ", and water coolant is split into bar-shaped laminar flow by the tubular layer flow nozzle in this device.The another kind of form of cooling facility for laminar flow is " a slit laminar flow refrigerating unit ", and this device uses a kind of slit laminar flow nozzle to form the slit laminar flow water coolant.The tubular layer flow cooling device is announced real the announcement among the clear 56-41848 of Japanese Utility Model patent.On the other hand, the slit laminar flow refrigerating unit is opened real the opening among the clear 57-170812 of clear 58-77710 and Japanese Utility Model patent the Japanese Patent spy and is announced.In these known cooling facility for laminar flow, can be clear that the cooling efficiency that the slit laminar flow refrigerating unit has is high about 1.5 times to 2 times than the tubular layer flow cooling device.
Yet the slit laminar flow refrigerating unit has following shortcoming.
At first, the slit laminar flow refrigerating unit is compared with the tubular layer flow cooling device, and the former is structurally complicated.Secondly with important be, traditional slit laminar flow refrigerating unit has a changeless flow of cooling water passage, thus the variation range of restriction water coolant flow velocity.In other words, when the lower cooling efficiency of needs, be difficult to reduce fully the flow velocity of water coolant in that slit laminar flow is broken.On the other hand, when need be than higher cooling efficiency, it is excessive that the flow velocity of water coolant just becomes, and causes water coolant splashing on band, thereby reduce rate of cooling.Therefore, can see that this kind slit laminar flow refrigerating unit is effective only in certain cooling efficiency scope.In addition,, make the slit enough narrow in order to form the slit laminar flow of water coolant by the slit laminar flow tuyere arrangement, for example about 20 to 30 millimeters.May cause the accumulation of external substance such as incrustation scale like this.The gathering of external substance will cause the variation of cooling-water duct area, will cause the variation of cooling efficiency like this.Therefore, need traditional slit laminar flow nozzle regularly be cleaned.
For the water coolant flow velocity that makes the laminar flow regime that is formed by the slit laminar flow refrigerating unit has the regulation range of a broad, this slit laminar flow refrigerating unit is opened clear 57-103728 and real the opening of Japanese Utility Model announced the whole improved slit laminar flow refrigerating unit of slit adjustable size among the clear 59-171761 the Japanese Patent spy.According to these disclosed contents, make one in a pair of flow deflector can move with respect to another flow deflector, in order to the gap between the adjustment flow deflector, thereby regulate the cooling-water duct area.Though adopt this device to allow to adjust cooling water flow or water coolant flow velocity at relative broad range, they need the mechanism of the removable flow deflector of movable supporting.This makes that the structure of refrigerating unit is complicated more.And this matching requirements compares the gap between the artificial adjustment flow deflector of complexity and trouble.
The carried out cooling-water flowing velocity modulation that also once proposed other type is whole with the change cooling efficiency, thus the crystalline size of may command steel, so that the cooling facility for laminar flow of control quality of strip.This cooling facility for laminar flow has been published in the Japanese Patent spy and has opened clear 51-28580, among 54-57414 and 55-88921 and the 59-50911.Open clear 51-28560 the Japanese Patent spy, among 54-57414 and the 55-88921, on cooling water supply pipe, have the flow control valve in order to control to the laminar flow nozzle cooling water supply.On the other hand, open in the cooling facility for laminar flow of clear 59-50911, the flow control valve is housed on cooling water supply pipe, and be used for stopping spoiler, arrive strip surface in order to permission or prevention water from the liquid stream of laminar flow nozzle the Japanese Patent spy.These devices cooling efficiency is as required controlled cooling-water flow.Yet, because the mechanical time in the flow control valve postpones and because the delay that the water coolant flow velocity in cooling water supply pipe changes, the responsiveness of water yield control is not very gratifying.In addition, even a kind of device in above-mentioned back is opened among the clear 59-50911 as the Japanese Patent spy and to be announced that the control of flow of cooling water is only limited to and opens or closes.Therefore, though can change according to the flow velocity of the device water coolant of announcing, all control reactions all are slowly, and only have the on-off control effect.And the flow velocity adjustment can only be carried out in more among a small circle.
Therefore, an object of the present invention is to provide a kind of simple in structure and to the cooling facility for laminar flow of the enough wide sheet metal strip of band cooling performance setting range.
Another object of the present invention provides a kind of accurately controlled chilling fluid flow rate, and the cooling facility for laminar flow with sufficiently high responding ability.
Further purpose of the present invention provides a kind of cooling facility for laminar flow that can adjust the cooling channels zone of laminar flow nozzle with automated manner.
In order to achieve the above object, promptly the cooling facility for laminar flow according to a kind of sheet metal strip of the present invention comprises laminar flow nozzle, this laminar flow nozzle comprises a pair of arrangement side by side mutually, for limiting a cooling channels therein, for setting up streamlined first flow deflector in slit and second flow deflector that transmits passage perpendicular to described band, be positioned at the cooling fluid supply equipment of laminar flow nozzle upper reaches, upper reaches one side, the amount of the cooling fluid that provides by the flow control mechanism described fluid channel of subtend is regulated, it is characterized in that making above-mentioned first flow deflector to make by deformable material, make its can respond distortion that this fluid channel internal pressure produces corresponding this fluid channel internal pressure with relative to the moving of second flow deflector, thereby change described runner passage area.
In addition, the present invention also provides a kind of slit laminar flow nozzle that is used for the sheet metal strip refrigerating unit, comprise first flow deflector and second flow deflector arranged with mutual side by side relationship, for being defined as the passage of the cooling fluid of setting up slit laminar flow betwixt, make this slit laminar flow perpendicular to the passage that transmits band, it is characterized in that making described first flow deflector to make, make it can respond described fluid channel internal pressure, produce the described relatively second flow deflector displacement of corresponding this hydrodynamicpressure by deformable material.
In for enforcement one embodiment of the invention structure, making other laminar flow nozzle be positioned at above-mentioned is the upstream side that produces the laminar flow nozzle that has the deformable flow deflector of laminar flow shape cooling fluid.
One mobile function unit also can be set between laminar flow nozzle, provide the amount of cooling fluid for regulating downward flow nozzle, in this structure, fluid control component comprises the barrier plate that has many otch around, allows fluid to flow through therefrom.Can provide the contract fully position of cooling fluid and movable for stopping as the barrier plate of flowing controling part to dirty flow nozzle for allowing all to measure between the full gate position that the downward flow nozzle of cooling fluid provides.Mid-way between this contract fully and full gate position, the supply of cooling fluid are only by limiting from the laminar flow fluid of last flow nozzle by above-mentioned otch.
First flow deflector is formed by deformable material, can produce the distortion corresponding to the fluid channel fluid pressure, coolant supply comprises to distribute with substantially uniform flow rate generally along fluid channel overall with scope supplies the laminar flow nozzle of cooling fluid.
Arrange first and second flow deflectors that the fluid channel is in to have the starting position in smallest passage zone, widen the runner zone by first flow deflector is produced corresponding to moving of fluid channel internal pressure amount.Therefore, by changing the runner zone of laminar flow nozzle, might the regulation range of cooling fluid flow rate be broadened under the situation in that laminar flow is broken.
The band refrigerating unit may further include the flow control apparatus that is arranged between coolant supply and the laminar flow nozzle, in order to the cooling channels between restriction coolant supply and the laminar flow nozzle, for the supply rate of the cooling fluid that provides to laminar flow nozzle is provided.Flow control apparatus is movably, can be according to cooling strip material width adjustment choked flow amount.Flow control apparatus comprises a pair of choked flow part that can flatly move along the laminar flow nozzle top edge, in order to adjust the choked flow amount.Use can obtain the cooling fluid flow velocity substantially along band whole width uniform distribution according to the flow control apparatus of strip width adjustment cooling fluid supply.
On the other hand, the band refrigerating unit also can comprise a flowing controling part between coolant supply and laminar flow nozzle, in order to adjust the cooling fluid supply from cooling water supply unit supplying layer flow nozzle.Flowing controling part can flatly move along the input direction that is parallel to band, adjusts or limit the chilled(cooling) water supply (CWS) amount in order to cooling performance as required.Flowing controling part partly stops from the water coolant of cooling water supply unit supply, in order to adjust the chilled(cooling) water supply (CWS) amount to laminar flow nozzle.In said structure, flowing controling part can increase and reduce the amount of stopping of water coolant linearly, in order to adjust the cooling fluid supply to laminar flow nozzle linearly.In another structure, flowing controling part can the fractionated mode change the prevention amount of cooling fluid, thereby adjusts the supply of cooling fluid with hierarchical approaches.
Can operate and the supply that can directly control to the cooling fluid of laminar flow nozzle in the power operation mode according to flow control apparatus of the present invention.Therefore, the sensitivity that flow velocity is adjusted will be enough high, and this refrigerating unit is applied to will obtain satisfactory result on the sheet metal strip hot rolls.
In addition, the band refrigerating unit can further comprise the force application apparatus of bias voltage first flow deflector towards second flow deflector, makes first flow deflector moving with respect to second flow deflector in order to restriction according to the hydrodynamicpressure in the fluid line.Biasing device comprises one along being parallel to first flow deflector, and outward extending rod member and make rod member press to the actuating mechanism of first flow deflector under the pressure of a control.
In addition, making first flat board is to be made by the elastic deformation material, and its top is fixed on the static element, be elastically biased toward himself towards second flow deflector for making from the elastic force that produces on one's body, thereby can limit first flow deflector moving with respect to second flow deflector at first flow deflector.Even when the flow velocity that needs fully big cooling fluid, when obtaining high cooling performance, restriction first dull and stereotyped the moving can obtain the uniform distribution of laminar flow cooling fluid flow velocity.
In another kind of structure, laminar flow nozzle is mounted to favours a vertical plane, provide cooling fluid from coolant supply along this plane.Laminar flow nozzle can be used with respect to the pitch angle setting device that vertical plane tilts with the above-mentioned laminar flow nozzle that makes.The laminar flow nozzle that tilts is discharged the laminar flow cooling fluid, makes cooling fluid form directed flow on band.Help like this to remove cooling fluid from strip surface apace, make the control of cooling efficiency become more or less freely.
According to the present invention, the slit laminar flow nozzle of the sheet metal strip that cooling is come by the band transfer passage of regulation comprise be arranged side by side between them, limiting a cooling channels, be basically perpendicular to first, second flow deflector of a slit laminar flow of band passage for formation, and can react to the hydrodynamicpressure in this fluid channel, first flow deflector is produced with respect to second flow deflector, and corresponding hydrodynamicpressure is mobile.
The accompanying drawing of the embodiment that recommends by detailed description given below and the present invention will more fully be understood the present invention, however the present invention can not think and place restrictions on by explanation that provides and accompanying drawing, and just in order to be used for explaining and understanding the present invention.
In the accompanying drawings:
Fig. 1 is the shaft side figure according to the local structure of basic or first embodiment of band refrigerating unit of the present invention,
Fig. 2 is the partial elevation view of band refrigerating unit first embodiment shown in Figure 1.
Fig. 3 is the sectional view along the amplification of first embodiment of Fig. 2 III-III line band refrigerating unit partly.
Fig. 4 is the figure of the relation of the size in the slit that limited by employed slit laminar flow nozzle among band refrigerating unit first embodiment among Fig. 1 of expression and admissible minimum water coolant flow velocity.
Fig. 5 is illustrated in the figure that the water coolant flow velocity on the cooling strip material width distributes.
Fig. 6 and Fig. 7 are illustrated in corresponding cooling performance under the water coolant flow velocity of various qualifications.
Fig. 8 is the local shaft side figure that improves example of band refrigerating unit first embodiment according to the present invention.
Fig. 9 is the local shaft side figure according to band refrigerating unit second embodiment of the present invention.
Figure 10 is illustrated in the cooling-water flowing on the band.
Figure 11,12 and 13 is profiles of employed slit laminar flow nozzle among Fig. 9 band refrigerating unit second embodiment.
Figure 14 is the part front view of Fig. 9 band refrigerating unit second embodiment.
Figure 15 is the profile along Figure 14 XII-XII line band refrigerating unit second embodiment partly.
Figure 16 is a kind of improved local shaft side figure of Fig. 9 band refrigerating unit second embodiment.
Figure 17 is the local shaft side figure according to band refrigerating unit the 3rd embodiment of the present invention.
Figure 18 is the sectional view of Figure 17 band refrigerating unit the 3rd embodiment.
Figure 19 is a kind of improved sectional view of Figure 17 band refrigerating unit the 3rd embodiment.
Figure 20 is the another kind of improved local shaft side figure of the 3rd embodiment of the band refrigerating unit on Figure 17.
Figure 21 is the sectional view of improved embodiment of the band refrigerating unit of Figure 20.
Figure 22 is the further improved sectional view of the band refrigerating unit that derives from of the embodiment from Figure 20.
Figure 23 A and Figure 23 B represent that respectively the water coolant flow rate is along the distribution on the strip width direction.
Figure 24 is the local shaft side figure of the 4th embodiment of band refrigerating unit according to the present invention.
Figure 25 is the shaft side figure of the flow control component that adopts among the 4th embodiment of band refrigerating unit among Figure 24.
Figure 26 is the local shaft side figure that the 4th embodiment a kind of of the band refrigerating unit of Figure 24 improves example.
Figure 27 is a kind of shaft side figure that improves structure of the flow control component of the band refrigerating unit employing in Figure 26.
Figure 28 is the graph of a relation of expression with the water coolant supply rate variation of the control of the flow control component on Figure 25 and 27.
Figure 29 is the side-view of the 5th embodiment of band refrigerating unit of the present invention.
Figure 30 is the frontview of the upper part of band refrigerating unit the 5th embodiment among Figure 29.
Figure 31 is the frontview of the upper part of band refrigerating unit the 5th embodiment among Figure 29, in Figure 29, during for the down partly included part of graphic extension and this upper part eclipsed partly be omitted down.
The explanation of most preferred embodiment:
Referring now to accompanying drawing, the special expression of Fig. 1 to Fig. 3 is according to first or basic embodiment of band refrigerating unit of the present invention.Generally speaking, embodiment according to band refrigerating unit of the present invention is that setting up a kind of is the cooling fluid of the slit laminar flow shape of cooling strip material, the embodiment of this band refrigerating unit is specially adapted to make the hot rolling line of band steel, is sent to the band steel 10 of (not shown) on the take-up roller from the finishing mill (not shown) along the discharging roller-way for cooling.This slit laminar flow shape cooling fluid becomes vertical direction to extend along the longitudinal axis with the band steel substantially.The embodiment of this band steel refrigerating unit adopts water coolant as heat-eliminating medium.Therefore, following will be the band steel refrigerating unit of the slit laminar flow set up with water coolant.Yet, should be appreciated that also heat-eliminating medium can be the heat-eliminating medium of required arbitrary fluid state.
As shown in Figure 1 to Figure 3, first embodiment of band refrigerating unit is adopted as the slit laminar flow nozzle 20 of the slit laminar flow 12 of setting up a water coolant.By chilled(cooling) water supply (CWS) equipment 30 cooling water supplies that are connected with the cooling water source (not shown).Make the mutual basically vertical alignment of this slit laminar flow nozzle 20 and chilled(cooling) water supply (CWS) equipment 30.As shown in Figure 1, the embodiment of shown band refrigerating unit adopts the layers flow nozzle as chilled(cooling) water supply (CWS) equipment 30.
To be placed on the slit laminar flow nozzle 20 as the layers flow nozzle of chilled(cooling) water supply (CWS) equipment 30.This slit laminar flow nozzle 20 comprises a pair of flow deflector 22 and 24, and this flow deflector 22 and 24 is each other arranged side by side, and generally along stretching perpendicular to the y direction of band 10. Flow deflector 22 and 24 separates with a given gap each other.Flow deflector 22 and 24 s' gap constitutes slit 26 and makes the water coolant from chilled(cooling) water supply (CWS) equipment flow through this slit thus.The width in the distance decision slit 26 between flow deflector 22 and 24 apparent surface.
In this embodiment, flow deflector 22 and 24 usefulness, one suitable holding components (not shown) movably are being supported it, thereby it can be relatively moved according to the cooling water pressure in the slit 26.And then in an illustrated embodiment, flow deflector 22 and 24 is by thin making with deformable stainless steel plate.In fact but flow deflector can be any the have suitable elasticity or material of rebound deformation, such as tinned(sheet)iron, and aluminium sheet, teflon, polyethylene, polypropylene etc.Should think that also the distance between layers flow nozzle 30 and the slit laminar flow nozzle 20 can decide on demand.The layers flow nozzle 30 that preferably makes placement is enough near the upper end of slit laminar flow nozzle 20, and this is in order to reduce height of devices.In addition, the low side of each delivery pipe 36 is inserted in the slit 26 of slit laminar flow nozzle 14.
Should be further understood that also the purpose that layers flow nozzle 30 is set only is to provide water coolant for slit laminar flow jet pipe 20.Therefore, layers flow nozzle 30 does not require the ER for emission rate uniformity by each delivery pipe 36.According to this point, the delivery pipe that adopts in layers flow nozzle 30 needs not to be accurate round tube, can be the shape of any needs, such as ellipse garden shape, Polygons etc.In addition, because layers flow nozzle 30 only is as chilled(cooling) water supply (CWS) equipment, so only require the water coolant that it can provide q.s, make water coolant pass through slit laminar flow nozzle 20 and form slit laminar flow 12, therefore, also be not limited to the layers flow nozzle, can substitute with any type of water equipment.But, can pay the utmost attention to pipe laminar flow jet pipe, or slit laminar flow nozzle for each partly water supply equably to slit laminar flow jet pipe 20 seam barriers.
As shown in Figures 2 and 3,, further adopt a choked flow piece 40, generally make it be correspondingly positioned at the transverse ends of slit laminar flow nozzle 20 according to first embodiment of band refrigerating unit of the present invention.Choked flow piece 40 stops the water coolant of supplying by layers flow nozzle 30 laterally along slit gap 26 longitudinal motions for part.To know from Fig. 3 and to find out that each choked flow piece 40 is to form with channel shape, be collected in the chute of the water coolant here for discharging thereby limit one.Choked flow piece 40 relies on the actuating mechanism (not shown) of horizontal drive to regulate the choked flow amount that flows.Moving when choked flow piece 40 is driven toward each other, will increase the flow restriction amount thereby make from delivery pipe 36 discharges and received the bar-shaped laminar flow that then discharges by choked flow piece 40.In fact, the position of choked flow piece 40 is decided according to the width of cooling strip material.
Water coolant for the delivery pipe 36 that guarantees to receive from layers flow nozzle 30 is discharged makes the upper end bending of flow deflector 22 and 24, and it is desirable making the opening 28a in slit 26 wideer than outlet 28b.
Adjusting operation according to the cooling efficiency of above-mentioned first embodiment of band refrigerating unit of the present invention will be discussed below.
Water coolant provides with the slit 26 of clavate laminar flow form to flow deflector 22 and 24 by layers flow nozzle 30.At this moment, the water coolant in the slit 26 is regulated by the position of regulating choked flow piece 40 according to the width of cooling strip material 10 for scope.Enter the water coolant in the slit 26, because the surface tension of water coolant is along flow deflector 22 and 24 expansions.Therefore, form screen shape laminar cooling water stream 12 by slit laminar flow nozzle 20.
It is controlled chilling discharge in order to regulate cooling efficiency that the ER for emission rate of the water coolant by layers flow nozzle 30 can be regulated.The adjusting of the row's efficient by layers flow nozzle 30 can be carried out to the chilled(cooling) water supply (CWS) rate of header 32 via cooling water tube 34 from cooling water source by regulating, and is perhaps undertaken by the cooling water pressures that are adjusted in the header 32 in addition.By to adjusting, the water coolant flow rate by slit 26 is changed from the ER for emission rate of the water coolant of layers flow nozzle 30 discharging.The metering function of the passage area that the reason slit is limited, this will cause the variation of the cooling water pressure in the slit 26.When cooling water pressure increases, the flow deflector 22 and 24 of slit laminar flow nozzle 20 away from each other, it leaves degree and decides by the size of the cooling water pressure in the slit laminar flow nozzle.Shown in the dotted line among Fig. 3.Simultaneously, elasticity or rebound deformation take place because of pressure in flow deflector 22 and 24.Like this, flow deflector 22 and 24 displacement and distortion have been widened the width t in slit 26, thereby have also been widened the channel region of water coolant.Flow deflector 22 and 24 the amount that relatively moves and be out of shape are exactly that this cooling water pressure that is produced by current limliting automatically determines.Just flow deflector 22 and 24 displacements that produced and deflection are the bounce of balance flow deflector 22 and 24 and the amount of the cooling water pressure in the slit 26.Therefore, by automatically making flow deflector 22 and 24 displacements and distortion, can make cooling water pressure automatically maintain normal pressure by 20 dischargings of slit laminar flow nozzle.Certainly,, just can regulate cooling water pressure, thereby prevent that water coolant from discharging with excessive pressure, cause that current splash on band steel 10 by the elasticity of selection flow deflector 22 and 24 and the characteristic of displacement thereof.And then, since shown in the embodiment of band refrigerating unit allow slit 26 expansions in the slit laminar flow, so can make the initial width t in slit little lower, can keep slit laminar flow to the minimum water coolant flow rate that makes permission, the unlikely laminar flow that makes breaks.
Learn thus, because slit laminar flow nozzle 20 can change slit 26 according to slit internal cooling water pressure when cooling water pressure increases, and can widen the flow of cooling water passage area, therefore flow deflector 22 laterally can be settled face-to-face with 24 one-tenth, and be limited less basically passage area.At this starting position, flow deflector 22 and 24 defines the minimum cooling-water flowing passage area in slit 26.As described, owing to can make minimum slit little of making admissible minimum water coolant flow rate lower, so can make minimum band cooling efficiency less than conventional slit laminar flow nozzle.This advantage of illustrated embodiment will see clearly Chu in Fig. 4.Among Fig. 4, with the admissible minimum water coolant flow rate of solid line representation unit width.On the other hand, dot in Fig. 4 according to the unit width water coolant flow rate of illustrated embodiment, this moment, wavelength width of a slit was at original width t(3mm for example) and maximum width t'(8mm for example) between variation.Further narration, when traditional slit laminar flow nozzle has the slit of a fixed 6mm, then the water coolant flow rate of the minimum of Yao Qiuing is 0.55m
3/ min on the other hand, is 3mm by the minimum width of selecting slit 26, and then the minimum water coolant flow rate of Yao Qiuing can be reduced to 0.2m
3/ min.Therefore, first embodiment of this band refrigerating unit can be in regulated in wider range cooling-water drain rate, thereby in the rolling process, just has the ability of band cooling efficiency on regulated in wider range discharging roller-way.
On the other hand, as will from Fig. 5, seeing, the distribution of water coolant flow rate on the different piece of slit laminar flow nozzle 20, on centre portions substantially evenly.Flow rate reduces with linear mode on lateral section substantially.This flow rate on the dual-side of slit laminar flow nozzle 20 is reduced characteristic can regulate by the position of regulating choked flow piece 40.From Fig. 6 and Fig. 7, can find out the relation of flow rate changes in distribution characteristic and choked flow piece 40.Obtain under certain test conditions in the characteristic shown in Fig. 6 and Fig. 7, for example diameter and the spacing between the delivery pipe when each delivery pipe 36 is certain, the total width W of slit laminar flow nozzle is 2300mm, water coolant flow rate by each delivery pipe 36 and the unit water coolant flow rate by slit laminar flow nozzle 20 are certain, with this understanding, finish experiment (mode 0 for the first time, 2,6), in mode 0,2,6 pairs of clavate laminar flows by the water coolant of delivery pipe 36 form and stop, the cooling width S is the band steel of 1500mm.The result of a kind of relative cooling efficiency shown in the figure on each horizontal position of this band.
From then on the result learns, in order to obtain basic cooling efficiency uniformly on the band total width, the bar shaped laminar flow that forms by delivery pipe 36 stops by form 2.Second kind of experiment finishing is by form 0,1, and 2 and 4 stop that the cooling width is that S is the band steel of 2000mm by delivery pipe 36 formation clavate laminar flows.Learn that from this result stop by form 2 to form the clavate laminar flow, the cooling efficiency on band 10 total widths is even substantially.Be interpreted as obtaining the uniform cooling efficiency on the total width thus, preferably stop the laminar flow that provides to slit laminar flow nozzle 20, limit the delivery rate of water coolant by part.
As mentioned above, be to implement the present invention, can carry out various remodeling first embodiment of above-mentioned band refrigerating unit.There is a kind of remodeling to be illustrated on Fig. 8.In improved embodiment shown in Figure 8, slit laminar flow nozzle 30a is used as chilled(cooling) water supply (CWS) equipment.This slit laminar flow nozzle 30a is placed on the slit laminar flow nozzle 20a that comprises flow deflector 22a and 24a.Similar to the aforementioned embodiment, this flow deflector 22a is that for example Bao stainless steel plate is made by thin and elasticity or rebound deformation material.On the other hand, in an illustrated embodiment, flow deflector 24a is by a rigid material, and for example thicker stainless steel plate is made.Limit slit 26a for forming fixation wall, flow deflector 24a is fixed rigidly along cooling-water duct.With suitable strut member flow deflector 22a is being supported movably, make its can towards with leave flow deflector 24a motion, this is in order to realize regulating according to the cooling water pressure in the 26a of crack the width in slit.
Use this structure,, wavelength width of a slit is changed according to the cooling water pressure in the slit by making the recoverable deformation that moves and pass through flow deflector 22a of flow deflector 22a with respect to flow deflector 24a.Therefore and the similar adjusting that might carry out the water coolant flow rate of wide region among above-mentioned first embodiment.
Though the embodiment among Fig. 8 is not provided with as illustrated choked flow piece among first embodiment in Fig. 2 and 3, may obtain similar current limliting by choked flow piece is provided.In this case, the homogeneity of cooling efficiency distribution will become according to the current limliting amount.
Fig. 9 to 13 illustrates second embodiment according to band refrigerating unit of the present invention.In this embodiment, have and the layers flow nozzle 30 of the same structure that in above-mentioned first embodiment, adopts as chilled(cooling) water supply (CWS) equipment.On the other hand, slit laminar flow nozzle 50 has as the similar structure of illustrated laminar flow nozzle 20a in Fig. 8.Therefore, slit laminar flow nozzle 50 comprises a deformable and movably a flow deflector 52 and a rigidity flow deflector 54.Yet, slit laminar flow nozzle 50 is placed on the plane of relative vertical plane slant dilation obliquely in this embodiment.In the structure of this recommendation, slit laminar flow nozzle 50 is approximately 15 ° with respect to the pitch angle of vertical plane.
As at Figure 11, shown in 12 and 13, the water coolant flow rate that flow deflector 52 depends in slit laminar flow nozzle 50 moves with respect to flow deflector 54.Just, Figure 11 represents the starting position of this flow deflector 52.With this understanding,, there is not chilled(cooling) water supply (CWS) for slit 56 is maintained minimum and original width, or basically with the water coolant supplying layer flow nozzle 50 of small flow rate.Figure 12 has represented that a kind of flow rate is less, but the water coolant of obviously big than starting position flow rate is supplied with a kind of condition of slit laminar flow nozzle 50.When the supply of water coolant increased, the pressure in the slit 56 also increased, and causes that flow deflector 52 moves relative to flow deflector 54, thereby allows relatively large water coolant to pass through thus.When the chilled(cooling) water supply (CWS) amount further increases, flow deflector 52 is further removed from flow deflector 54, thereby as shown in figure 13, increases the width in slit 56.Therefore, by changing wavelength width of a slit, but do not cause noticeable change, the water coolant flow rate can automatically be regulated by the cooling-water drain pressure of slit laminar flow nozzle 50.
When making slit laminar flow nozzle 50 have the pitch angle, the cooling-water flow energy by this slit laminar flow nozzle is transformed into vertical component and horizontal component.Naturally understand that the horizontal component at the slit laminar flow center be maximum, and be minimum at its two avris.Therefore the slit laminar flow of being set up by slit laminar flow nozzle 50 12 becomes such as shown in Figures 9 and 10 curved profile.This makes, and the mobile water coolant has flow direction on band steel 10, and mainly is in radial direction water coolant short period on band radially to be flowed.Because the band cooling efficiency not only depends on the water coolant flow rate that is discharged on the band steel, and depend on the time cycle that water coolant is kept on band, holding time the cycle of this water coolant will be uncertain factor accurately controlling in the band cooling efficiency usually.This can shorten the cycle of keeping water coolant the problems referred to above are resolved by making water coolant on band have the radial flow characteristic.This makes the unit's of utilization water coolant flow rate measure cooling efficiency, and allowing more accurately, controlled chilling efficient is easier to.
Figure 14 to Figure 16 represents a kind of improvement of above-mentioned second embodiment of band refrigerating unit.In this embodiment, slit laminar flow nozzle 60 is used as and substitutes the layers flow nozzle, to slit laminar flow nozzle 50 cooling water supplies.In addition, the shown improvement choked flow piece 40 that also adopts first embodiment of band refrigerating unit relevant among Fig. 1 to 3 to narrate.
To see that from Figure 15 slit laminar flow nozzle 60 comprises an accumulator part 62 and a nozzle segment 64.This accumulator part 62 is attached to the cooling-water flowing (not shown) that gets on substantially in a known manner.The accumulative water coolant is delivered to nozzle segment 64 by the contact channel 66 that forms between accumulator part and nozzle segment in accumulator part 62.On the other hand, that the cooling efficiency on the variant part is become is even substantially in order to regulate, and moves horizontally choked flow piece 40, can stop the part of chilled(cooling) water supply (CWS).
Expression is according to the 3rd embodiment of band refrigerating unit of the present invention among Figure 17 and Figure 18.Among the embodiment shown here, this slit laminar flow nozzle 60 is the same with the foregoing description in Figure 14 to 16.This slit laminar flow nozzle 60 is placed in one to be fit to set up on the slit laminar flow nozzle 70 of water coolant laminar flow 12.Similar with above-mentioned second embodiment, this slit laminar flow nozzle 70 generally includes a flow deflector 72 elastically deformable and movable and a rigidity flow deflector 74.This flow deflector 74 is fixed to one rigidly and is parallel to substantially from the streamlined flat guide plate of the water coolant of slit laminar flow nozzle 60.On the other hand, flow deflector 72 is placed side by side near flow deflector 74, for limiting slit 76 betwixt.In addition, slit laminar flow nozzle 70 also comprises upper and lower pressing member 78a and 78b.Best, make this pressing member 78a and 78b comprise cylindrical rod respectively.In the structure of recommending, cylindrical rod pressing member 78a and 78b are extended respectively in abutting connection with the edge, upper and lower of flow deflector 72.Make pressing member 78a and 78b and operational unit 78c and the 78d (not shown) that matches.In an illustrated embodiment, operational unit 78c and 78d comprise the action cylinder, such as cylinder, hydro-cylinder etc., be for make pressing member 78a and 78b towards with deviate from flow deflector 72 motion.Yet this operational unit can comprise spring member etc.This operational unit operation pressing member 78a and 78b are to depress power F for handle
1And F
2Be applied on the flow deflector 72.This that applies by pressing member 78a and 78b is depressed power and be can be used as the restraint that restriction flow deflector 72 moves relative to flow deflector 74, and the deflection that limits flow deflector 72.
In pre-operation, 72 operations apply the given pressure of depressing to flow deflector by pressing member 78a and 78b to make operational unit 78c and 78d.Therefore if the cooling water pressure slit 76 in than pressing member 78a and 78b to depress pressure little, the displacement of flow deflector 72 just can not occur.Therefore the blowdown presssure from 70 dischargings of slit laminar flow nozzle of water coolant can be decided by the pressure of depressing of operational unit 78c and 78d.To the restriction of the displacement of flow deflector 72 and distortion will make water coolant flow rate homogeneity than the highland along distributing on the band whole width.
It on Figure 19 the improvement structure of the 3rd embodiment of the band refrigerating unit on Figure 17 and 18.Improve in the structure at this, slit laminar flow nozzle 70 is positioned to relative vertical plane and tilts, and this vertical plane was discussed when the relevant second embodiment of the present invention is discussed.Thin stainless steel plate is used as flow deflector 72.Flow deflector 72 is fixed to a roller or rotating rod 78e gets at its top 72a.Because flow deflector 72 only is that its top is fixed on the rotary bar 78e, its elastic force will gently be applied on the entire structure of flow deflector 72 conversely, make its major portion flexibly contact flow deflector 74.Can regulate the position of flow deflector 72 top by rotating the excellent 78e of revolution substantially by the elastic force that flow deflector 72 produces.On the other hand, the lower curtate edge near flow deflector 72 is provided with pressing member 78b.Similar with the foregoing description, this pressing member 78b and operational unit 78d cooperate carry out towards with the operation that deviates from flow deflector 72, be to depress the adjusting manipulated variable in order to apply.
Therefore utilize this kind structure can realize to the distortion of flow deflector 72 and the restriction of displacement.
The another kind of the 3rd embodiment of the band refrigerating unit on Figure 20 and Figure 21 on expression Figure 17 and 18 improves.In this kind improvement, slit laminar flow nozzle 20 comprises a pair of flexibly deformable similar with above-mentioned first embodiment in Fig. 1 to 3 and movable flow deflector 22 and 24.Pressing close to separately, the pressing member 78a and the 78f of flow deflector top are the relative displacements that is used for limiting these flow deflectors.The restriction of similar displacement can realize by the structure on Figure 22.In the improvement of Figure 22, the top of the flow deflector 22 of elastically deformable and 24 is fixed to rotating roller or excellent 78g and 78h gets on.By these top being fixed on excellent 78g of revolution and the 78h, the elastic force fexible bias pressure that is produced by these flow deflectors makes these flow deflectors towards another.
Therefore, these two kinds of improvement can limit the deflection and the displacement of deformable flow deflector 22 and 24.
Figure 23 A and Figure 23 B illustrate the distribution of water coolant flow rate on the whole width of slit laminar flow nozzle 70 and 20.The flow rate distribution that Figure 23 A is expression when the distortion of deformable flow deflector and displacement are unrestricted.By seeing here,, make to be provided the regional narrow of the even water coolant flow rate of having of slit laminar flow 12 by improving unit water coolant flow rate by slit laminar flow nozzle 60.On the other hand, limit its distortion and displacement,, can obtain the even flow rate zone of broad as finding out from Figure 23 B is clear by deformable flow deflector being provided be restricted to.Figure 24 represent according to a band refrigerating unit of the present invention the 4th embodiment.Shown embodiment adopts as at Figure 17, the slit laminar flow nozzle 60 and 70 of the such same structure of diagram in 18 and 19.Flowing controling part 80 is configured between the slit laminar flow nozzle 60 and 70 of vertical arrangement.
As shown in Figure 25, flowing controling part 80 comprises spoiler 81 and operational unit 82, this operational unit 82 be applicable to drive spoiler 81 towards and deviate from cooling-water duct between the slit laminar flow jet pipe 60 and 70 that is limited at the upper and lower.As shown in figure 25, spoiler 81 comprises leading flat board 84 and having a plurality of triangular incision 84a that are generally at this plate part front end along horizontal stretching substantially.Spoiler 81 also has the chute 85 that and main dull and stereotyped 84 rear ends form one.Vertical front wall 83a also is formed together with sidewall 83b.Therefore, have main dull and stereotyped 84 of whole antetheca 83a and sidewall 83b and limit water coolant choked flow spaces, be receiving unit or the water coolant that all discharged, and discharge through chute 85 from upper layer flows nozzle 60.
Limit the flow of cooling water recess that forward end is progressively widened flow path area owing to have the triangular incision 84a of antetheca 83a, when making spoiler 81 drive forward towards the cooling-water duct between upper and lower slit laminar flow nozzle 60 and 70, the cooling-water duct zone is reduced gradually by operational unit 82.Therefore, by the position of control spoiler 81, can regulate water coolant supply rate.
As mentioned above, because the deflection of deformable flow deflector 72 and 74 is variable, so the width in the slit 76 of slit laminar flow nozzle 70 is also variable, but it depends on the cooling water pressure the slit in, the ER for emission rate of the water coolant by the slit laminar flow nozzle can be adjusted with controlling the spoiler position.Thereby the cooling efficiency of band steel can be adjusted.
Figure 26 represents a kind of improvement of the 4th embodiment of the band refrigerating unit shown in Figure 24 and 25.In this kind improvement, layers flow nozzle 30 is used as the chilled(cooling) water supply (CWS) equipment to slit laminar flow nozzle 70 cooling water supplies.The flowing controling part 90 of texture improvement is placed between pipe laminar flow jet pipe 30 and the slit laminar flow nozzle 70.Flowing controling part 90 generally includes spoiler 91 and operational unit 92, this operational unit 92 drive spoiler levels towards and deviate from cooling-water duct between layers flow nozzle 30 and the slit laminar flow nozzle 70.
As shown in Figure 27, spoiler 91 comprise one be essentially dull and stereotyped and horizontal stretching main dull and stereotyped 94 and along the chute part 95 that forms on the main dull and stereotyped edge, this chute is away from above-mentioned cooling-water duct, and stretches with flow deflector is parallel.Main dull and stereotyped the other side forms stepped otch 94a, and each stepped otch comprises shallow cut 94c and stramazon 94d.Vertical front bulkhead 93b stretches along main dull and stereotyped 94 the edge that has otch 94a.Vertical front wall 93a and the sidewall 93b that stretches along main dull and stereotyped 94 lateral edges form one.Therefore, vertical front wall 93a and sidewall 93b gather together to main dull and stereotyped 94 horizontal plane, are a water coolant pilot flow slot part 95 of collecting on horizontal plane.Chute part 95 is discharged water coolant guiding discharge-channel.The anterior border of spoiler 91 can towards with deviate from cooling-water duct and move, be to regulate for the flow rate of subtend slit laminar flow nozzle 70 cooling water supplies, and can move between away from position and one second choke position first, when first away from the position on, spoiler 91 is placed on and leaves cooling-water duct, be to discharge to slit laminar flow nozzle 70 by whole cooling water inflows of layers flow nozzle 30 in order to allow, on second choke position, spoiler is to supply to slit laminar flow nozzle 70 for the choked flow water coolant with the cooling-water duct Close All.Spoiler 91 and can be parked in arbitrary position between away from position and choke position between moving period.For example, spoiler 91 can be parked on the position, and in this position, main dull and stereotyped 94 front end is positioned at cooling-water duct, makes the part water coolant from 30 dischargings of layers nozzle, through supplying with slit laminar flow nozzle 70 here and by shallow cut and stramazon 94c and 94d.Therefore, limited amount water coolant is supplied to slit laminar flow nozzle 70 from layers flow nozzle 30.The minimizing ratio of chilled(cooling) water supply (CWS) amount can be decided by the ratio of opened areas, just about the shallow cut of left part and the width of stramazon 94c and 94d.When spoiler 91 further moves to cooling-water duct, shallow cut 94c is positioned at passes through cooling-water duct.In this case, the water coolant that is provided by layers flow nozzle 30 is only supplied with slit laminar flow nozzle 70 by stramazon 94d.Therefore the water to 70 supplies of slit laminar flow nozzle just further is restricted.Learn that thus according to the present invention, the chilled(cooling) water supply (CWS) amount may command of coming from the layers flow nozzle becomes whole choked flows (zero), first limit rate and little second limit rate and full dose scope than first limit rate.
As can be seen from Figure 26, when chilled(cooling) water supply (CWS) is limited on above-mentioned first and second limited volumes, be discharged away or get back to cooling water source by the main dull and stereotyped 94 excessive water coolants that received of spoiler 91.
In this embodiment, because slit laminar flow nozzle 70 comprises deformable flow deflector 72 and 74, set as above-mentioned first embodiment, by just can regulate ER for emission rate and blowdown presssure to the adjusting of passing through the zone in the slit 76 by the water coolant of slit laminar flow nozzle 70.
In addition, according to shown in the 5th embodiment, the cooling water inflow of 91 pairs of slit laminar flow nozzles of spoiler supply will provide additional adjusting.Because spoiler 91 can mechanically or electrically be driven by operational unit 92, thus chilled(cooling) water supply (CWS) amount can be regulated soon to slit laminar flow nozzle 70, to improve the response capacity that the chilled(cooling) water supply (CWS) amount is regulated.Like this, will cool off control more accurately to the band steel 10 of rolling-in.
In this embodiment, the width of the width of shallow cut 94c and stramazon 94d and left part 94d is equal to each other.In this situation, the chilled(cooling) water supply (CWS) amount is 0,1/2,2/3 and full dose between regulate.
As mentioned above, the flowing controling part 80 and 90 that adopts in the embodiment of Figure 24 to 27 can make the chilled(cooling) water supply (CWS) rate adjusted by the position of regulating spoiler 81 and 91 in the mode among Figure 28.Adopted in the band refrigerating unit as the barrier plate 81 diagram among Figure 24 exactly, just can obtain for a change providing the flow limitation of linearity shown in the line A as shown of supply of water coolant to slit laminar flow nozzle 70.On the other hand, when having adopted spoiler 91, shown in the variation of the chilled(cooling) water supply (CWS) amount line B as shown, become notch cuttype to change.In both any,, react so can obtain faster during to the chilled(cooling) water supply (CWS) amount of slit laminar flow nozzle 70 in adjusting because spoiler 81 and 91 is mechanically to be driven by relevant operational unit 82 and 92.Therefore, can reactively preferably carry out the control of cooling efficiency.
Figure 29 represents according to band refrigerating unit the 5th of the present invention and actual embodiment to Figure 31.The embodiment of shown band refrigerating unit generally includes upper layer flows nozzle 100 and lower layer flow nozzle 120.Top slit laminar flow nozzle 100 comprises that accumulator part 102 and is connected to accumulator nozzle segment 104 partly by a contact channel 106.This accumulator part 102 is fixed on the top cooling water tube 108, and this supply pipe 108 is received on the bottom cooling water tube 110 by some vertical tubes 112.This upper and lower cooling water tube 108 and 110 is by being connected to (not shown) on the chilled(cooling) water supply (CWS) source for the chilled(cooling) water supply (CWS) pipeline to accumulator part 102 cooling water supplies.Bottom cooling water tube 110 is fixedly mounted on the supporting frame 114 and thereby support top cooling water tube 108, and top slit laminar flow nozzle is held on by 112 of some vertical tubes.
On the other hand, bottom slit laminar flow nozzle 120 comprises deformable flow deflector 122 and rigidity flow deflector 124.In flow deflector 122 and 124 qualification slits 126.Rigidity flow deflector 124 is rotatably fixed on the carriage 128 of a basic framework 130.Flow deflector 124 can be for allowing to regulate the angle of inclination of slit laminar flow nozzle 120 around pivot 132 rotations.Flow deflector 124 and choked flow pin 134 match, and an opening combination in one group of spoiler opening 136 that this choked flow pin 134 can and form by basic framework 130 is to be fixed on flow deflector 124 on the selected position, angle of inclination.
On the other hand, the top of flow deflector 122 is fixed on the cylindrical swivel pipe 136 rigidly, this swivel pipe 136 is supported on the dihedral framework 138 that has been installed on the basic framework 130 rotationally.By the fixing top of flow deflector 122, flow deflector 122 is changed according to the angle position of the top that relatively rotates pipe 136 to the elastic force of flow deflector 124 bias voltages.In order to regulate this elastic force, swivel pipe 136 is supported on the dihedral framework 138 rotationally, rotational angle is approximately 140 °.On the other hand, for swivel pipe 136 is fixed on the angle position of selection, setscrew 142 is set.One end of this setscrew 142 and the outer surface of rotation pipe 136 are contacted, and are for the latter's rotation is placed restrictions on a latched position.On the other hand, choked flow screw 140 being rotated, can discharge the rotation tube end, thereby the pipe rotation is rotated in permission, is to regulate the angle position of the top of flow deflector 122 in order to regulate the elastic force face.
The embodiment of the refrigerating unit of band in addition, adopts decompression lever 144 and 146.Decompression lever 144 and 146 cooperates flow deflector 122, for elastic force is applied on the flow deflector 122 from lateral extent.Decompression lever 144 and 146 is connected on the piston rod 148 and 150 of sky cylinder 152 and 154, by carriage 156 and 158 these cylinders is rotatably fixed to basic framework 130 and gets on.As described in relevant the 3rd embodiment, cylinder 152 and 154 provides elasticity decompression power, with distortion and the displacement that flexibly limits flow deflector 122.By flow deflector, and can cooperate with the decompression power that applies by decompression lever 144 by its top being fixed on the elastic force that produces on the rotation pipe 136 substantially, in order to the distortion and the displacement of restriction flow deflector 122.
In addition, the embodiment of shown band refrigerating unit adopts a pair of choked flow part 160 and 126.Each choked flow part 160 and 162 is essentially U-shaped, is received in the discharging of the water coolant in the chute with qualification. Choked flow part 160 and 162 to be received on 164 and 166, to be got back to the water coolant accumulator or in order discharging for making water coolant.
Experimentize with above-mentioned band refrigerating unit structure, find out best setting then.The experiment of being carried out, its water coolant flow rate is 170m
3/ hr.According to experimental result, when the pitch angle that flow deflector 124 is set is 20 °, when being applied to decompression power on the flow deflector 122 and being 5kg.m/m, can set up the water coolant slit laminar flow that passes through slit laminar flow nozzle 120 of expectation by decompression lever 144 and 146.The water coolant laminar flow of setting up can not produce basically when the contact belt steel surface and splash.Under similarity condition, the water coolant flow rate is adjusted in 50m
3/ hr is to 250m
3In/hr the scope.Can find out that the slit laminar flow of being set up by slit laminar flow nozzle 120 is constant substantially.This will be a well proof, will provide the regulation range of the water coolant flow rate of broad basically according to band refrigerating unit of the present invention, can't cause any bad variation of laminar flow condition.
In the 4th embodiment, substitute choked flow part 160 and 162 with flowing controling part 90, done another time experiment.To regulate the chilled(cooling) water supply (CWS) rate and thereby flow rate in regulating the slit laminar flow of setting up by slit laminar flow jet pipe 122 in time of response test.The result shows that the error of the water coolant flow rate in laminar flow is ± 5%, and response cycle is less than or equals one second.The cooling zone steel will be satisfied on worktable for hot transporting in hot rolling production line for this.
In these embodiment of above discussion, all adopt the flow deflector of an elastically deformable that this plate slightly is out of shape, thereby widen in the cooling-water duct zone of the transverse center of slit laminar flow nozzle, thereby for the cooling efficiency higher slightly than other method is provided.This adopts the uniformity of temperature profile on the cooling strip material is favourable.Yet the deformability of this removable flow deflector is always not needed to realizing the present invention.Be exactly to finish improved embodiment with rigid plate according to band refrigerating unit of the present invention as removable flow deflector.And in the embodiment shown, layers flow nozzle and slit laminar flow nozzle are the chilled(cooling) water supply (CWS) equipment that is used as the slit of setting up cooling strip material streamlined slit laminar flow nozzle cooling water supply.Yet this chilled(cooling) water supply (CWS) equipment must not be laminar flow nozzle, can substitute by arbitrary suitable equipment yet.Therefore as long as, in order to be easy to better understand the present invention, according to these embodiment the present invention is described, should be known in without prejudice to principle of the present invention, the present invention can implement with various different modes.Therefore, should think, as long as without prejudice to the principle of the present invention of in attached claim, making, the present invention comprise every enforcement and shown in the various improvement of embodiment.
Claims (27)
1, a kind of sheet metal strip refrigerating unit comprises:
Laminar flow nozzle comprises a pair of arrangement side by side mutually, for limiting a cooling channels therein, setting up streamlined first flow deflector in slit and second flow deflector that transmit passage perpendicular to described band
Be positioned at the cooling fluid supply equipment of above-mentioned laminar flow nozzle upper reaches one side, the amount of the cooling fluid that provides by the flow control mechanism described fluid channel of subtend is regulated,
It is characterized in that first flow deflector is formed by deformable material, make it can produce the distortion of corresponding described fluid channel internal pressure, thereby make above-mentioned first flow deflector can respond this fluid channel internal pressure, produce, change described flow channel area relative to the moving of second flow deflector.
2, device according to claim 1 is characterized in that described cooling fluid supply equipment comprises along distributing to the laminar flow nozzle of this fluid channel supply cooling fluid with even flow rate on the whole width of described fluid channel.
3, device according to claim 1 and 2, it is characterized in that described first, second flow deflector is arranged to have the original state of minimum flow channel area as the fluid channel, make first flow deflector produce to should the fluid channel fluid pressure, for widening the displacement of relative second flow deflector in described fluid channel.
4, device according to claim 1, it is characterized in that described flow control mechanism is a current-limiting components for the cooling channels between described cooling fluid supply equipment and described laminar flow nozzle is limited between between described supply cooling fluid equipment and described laminar flow nozzle, for the cooling fluid fill rat that offers described layer nozzle is regulated.
5, device according to claim 4 is characterized in that described choked flow part is parts movably, thereby can be according to described cooling strip material width adjusting choked flow amount.
6, device according to claim 5 is characterized in that described choked flow part comprises a pair of can flatly moving along described laminar flow nozzle top edge, for regulating the choked flow part 40 of choked flow amount.
7, device according to claim 1, it is characterized in that described flow control mechanism for being positioned between described supply cooling fluid equipment and described laminar flow nozzle, is the flowing controling part to regulating to the cooling fluid supply of described laminar flow nozzle from described cooling water supply equipment.
8, device according to claim 7 is characterized in that described flowing controling part for moving being parallel on the feeding direction of described band flatly, can regulate the flowing controling part 80 or 90 of cooling fluid supply by cooling efficiency on demand.
9, device according to claim 1, it is characterized in that further comprising with the parts of described first flow deflector of given power bias voltage, make it can limit of the displacement of described first flow deflector according to the hydrodynamicpressure in the described fluid channel with respect to described second flow deflector towards described second flow deflector.
10, band refrigerating unit according to claim 9 is characterized in that described biasing member comprises that one is parallel to described first flow deflector and the rod member that stretches and suppress the operational unit of described rod member towards described first block of plate with controlled pressure.
11, band refrigerating unit according to claim 1, it is characterized in that making the top of described first flow deflector to be fixed on the stationary parts, for producing elastic force at described first flow deflector itself, so that be elastically biased toward this flow deflector, limit of the displacement of described first flow deflector with respect to second flow deflector towards described second flow deflector.
12, device according to claim 1 is characterized in that described laminar flow nozzle is arranged to favour a vertical plane, and described supply cooling fluid equipment is supplied described cooling fluid along this vertical plane.
13, device according to claim 12 is characterized in that also further being included as the mechanism that the angle of the described relatively vertical plane inclination of described laminar flow nozzle is regulated.
14, device according to claim 12 is characterized in that described chilled(cooling) water supply (CWS) equipment comprises one along on the whole width of described fluid channel, distributes with uniform flow rate and supplies the laminar flow nozzle of cooling fluid.
15, device according to claim 12, it is characterized in that described first and second flow deflectors are arranged to makes described fluid channel have smallest passage zone as original state, and described first flow deflector can be widened described passage area to move relative to described second flow deflector corresponding to the hydrodynamicpressure in the described fluid channel.
16, device according to claim 12, it is characterized in that described flow control mechanism comprise one between between described supply cooling fluid equipment and described laminar flow nozzle the choked flow part for the fluid channel between described supply cooling fluid equipment and described laminar flow nozzle is limited, thereby can regulate the cooling fluid fill rat of described laminar flow nozzle.
17, device according to claim 16 is characterized in that described choked flow part can move, and can regulate the choked flow amount corresponding to the described strip width of being cooled off.
18, device according to claim 17, it is characterized in that described choked flow part be a pair of can be along the top edge tangential movement of described laminar flow nozzle for regulating the choked flow part of choked flow amount.
19, device according to claim 12, it is characterized in that described flow control mechanism comprises between described supply cooling fluid equipment and described laminar flow nozzle, can move horizontally the flowing controling part that to regulate the limited volume of cooling fluid supply according to the cooling efficiency of expectation being parallel on the described band feeding direction.
20, device according to claim 12, it is characterized in that also comprising with the parts of described first flow deflector of given power bias voltage towards second flow deflector, be the hydrodynamicpressure of response in described fluid channel, the displacement of described relatively second flow deflector of described first flow deflector is limited.
21, device according to claim 20 is characterized in that described biasing member comprises one along rod member that is parallel to described first flow deflector direction stretching, extension and the operational unit that moves towards described first flow deflector with the controlled described rod member of pressure bias voltage.
22, device according to claim 12, the top that it is characterized in that described first flow deflector is fixed on the stationary parts, thereby make described first flow deflector itself be produced as the elastic force of this first flow deflector of fexible bias pressure, thereby can the displacement of described relatively second flow deflector of described first flow deflector be limited towards described second flow deflector.
23, a kind of slit laminar flow nozzle that is used for the sheet metal strip refrigerating unit, comprise first flow deflector and second flow deflector arranged with side by side relationship mutually, for being defined as the passage of the cooling fluid of setting up slit laminar flow betwixt, this slit laminar flow is perpendicular to the passage that transmits band, described first flow deflector is made by deformable material, make it can respond described fluid channel fluid pressure, produce the displacement of described relatively second flow deflector of corresponding this hydrodynamicpressure.
24, nozzle according to claim 23, it is characterized in that described first and second flow deflectors are arranged to the smallest passage zone that has as starting position, make described first flow deflector to move towards leaving described second flow deflector, for widening described passage area corresponding to the hydrodynamicpressure in the described fluid channel.
25, nozzle according to claim 23, it is characterized in that also comprising the parts of described first flow deflector of bias voltage towards second flow deflector, for responding the hydrodynamicpressure in the described fluid channel, limit the displacement of described relatively second flow deflector of described first flow deflector.
26, nozzle according to claim 25 is characterized in that described bias component comprises that one suppresses the operational unit of described rod member towards described first flow deflector along being parallel to the rod member and that the described first flow deflector direction stretches with a controlled pressure.
27, nozzle according to claim 23, it is characterized in that the top of described first block of plate is fixed on the immobilized parts, for be produced as the elastic force of this first block of plate of fexible bias pressure at described first block of plate itself, for limiting the displacement of described first block of described relatively second block of plate of plate towards described second block of plate.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2110386 | 1986-02-04 | ||
| JP2110286 | 1986-02-04 | ||
| JP21103/86 | 1986-02-04 | ||
| JP21102/86 | 1986-02-04 | ||
| JP17033486 | 1986-11-07 | ||
| JP170334/86 | 1986-11-07 | ||
| JP170333/86 | 1986-11-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87100594A CN87100594A (en) | 1987-12-16 |
| CN1016043B true CN1016043B (en) | 1992-04-01 |
Family
ID=27283286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87100594 Expired CN1016043B (en) | 1986-02-04 | 1987-02-04 | Method and apparatus for cooling metal strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016043B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404154C (en) * | 2003-06-13 | 2008-07-23 | 杰富意钢铁株式会社 | Controllable cooling method for thick steel plate, thick steel plate manufactured by the controllable cooling method, and cooling device for the thick steel plate |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4337342A1 (en) * | 1993-11-02 | 1995-05-04 | Schloemann Siemag Ag | Device for cooling rolled strips |
| CN100447260C (en) * | 2006-06-23 | 2008-12-31 | 宝山钢铁股份有限公司 | Quick cooling test plant for disk type band steel, and method of use |
| CN101837378B (en) * | 2009-03-20 | 2012-05-30 | 宝山钢铁股份有限公司 | Laminar flow width-adjusting cooling device and control method thereof |
| CN101824523B (en) * | 2010-05-28 | 2012-05-30 | 中冶南方(武汉)威仕工业炉有限公司 | Cooling spray pipe with continuously adjustable jet width |
| DE102017220891A1 (en) * | 2017-11-22 | 2019-05-23 | Sms Group Gmbh | Method for cooling a metallic material and cooling beam |
-
1987
- 1987-02-04 CN CN 87100594 patent/CN1016043B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404154C (en) * | 2003-06-13 | 2008-07-23 | 杰富意钢铁株式会社 | Controllable cooling method for thick steel plate, thick steel plate manufactured by the controllable cooling method, and cooling device for the thick steel plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN87100594A (en) | 1987-12-16 |
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