CN202224452U

CN202224452U - Cooling device capable of generating flat jet

Info

Publication number: CN202224452U
Application number: CN2011202407673U
Authority: CN
Inventors: 袁国; 王昭东; 王国栋; 王黎筠; 韩毅; 徐义波
Original assignee: Northeastern University China
Current assignee: Northeastern University China
Priority date: 2011-07-08
Filing date: 2011-07-08
Publication date: 2012-05-23
Anticipated expiration: 2021-07-08

Abstract

A cooling device capable of generating flat jet is characterized in that an inner pipe and a C-shaped pipe are eccentrically fixed by a positioning bar so as to form a cavity between the inner pipe and an outer pipe; the two sides of the C-shaped pipe are respectively welded with a slat and then a narrow seam is formed axially; the width of the narrow seam can be adjusted by a tension bolt and a compression bolt on an adjustable slat and a fixed slat I; the outer pipe is externally and radially welded with reinforcing bars to prevent deformation; the outlet end of the inner pipe is welded with a steel plate and a sewage draining outlet is arranged on the steel plate; and the inlet end of the cavity between the inner pipe and the outer pipe is sealed by welding, while the outlet end of the cavity is sealed by a flange and serves as the sewage draining outlet between the inner pipe and the outer pipe. The inner pipe is provided with two rows of flow through holes; cooling medium enters the inner pipe from a flange at the inlet end and then flows into an eccentric cavity through the flow through holes; the cooling medium forms uniform water flows within the width of a rolling line after flowing through multiple damping arrangement parts; and then the water flows form the flat jet through the narrow seam so as to cool down the steel plate. The cooling device has the advantages of being strong in cooling capability, more uniform in width direction and capable of meeting the technical requirement for rapidly cooling down the steel plate to 650-720 DEG C from 800-1000 DEG C after the steel plate is rolled.

Description

A kind of cooling device that produces flat jet

Technical field

The utility model relates to metal processing and rolls cooling technology field, back, specifically is a kind of device that produces flat jet to the coolant cooling, is used for the post processing of rolling of hot-strip, cut deal.

Background technology

At present; Developmental research along with advanced ferrous materials; For obtaining high added value, steel products capable of circulation, roll the supper-fast cooling in back as improving ferrous materials performance and the important process means that realize the steel grade exploitation, in hot-strip production, bringing into play important effect.One that develops in the world in recent years is used to control new technology-supper-fast cooling (UFC, ultra fast cooling) technology of rolling the supper-fast cooling in back and has become the new trend that develops in the technical field of steel rolling.

Supper-fast cooling device is the extremely strong cooling equipment of a kind of quick cooling capacity, and common laminar flow cools off maximum cooling velocity generally can not surpass 100 ℃/s, and ultrafast cold average cooling rate at least should be greater than 150 ℃/s.According to the production technology of particular band product made from steel, require to roll back steel plate 800-1000 ℃ after roll and be quickly cooled to 650-720 ℃.The cooling capacity of cooling device, cooling velocity, cooling uniformity all have very important influence to the quality and the performance of final products.Along with the raising that cooling capacity is required, original laminar flow cooling device can not satisfy its requirement, certainly will bring the innovation of cooling device.

Summary of the invention

The purpose of the utility model provides a kind of cooling device that produces flat jet, and cooling capacity is strong, more even on the width, can satisfy the 800-1000 ℃ technological requirement that be quickly cooled to 650-720 ℃ of steel plate after roll, and realizes supper-fast cooling.

A kind of cooling device that produces flat jet; Cavity between pipe and outer tube in pipe and C shape pipe forms through positioning strip off-centre is fixing in it is characterized in that; And axially forming a slit; Slit width can be regulated through turnbuckle and hold-down bolt, and external diameter of pipe prevents distortion to being welded with the multiple tracks rinforcement bar outside; Interior tube inlet end flange links to each other with the cooling medium pipeline, and the interior pipe port of export is provided with the inner chamber sewage draining exit; Interior pipe has 2 row's through flow holes; Pipe was after through flow hole flow into eccentric cavity in cooling medium got into from the inlet end flange; Cooling medium is provided with the back through the multiple tracks damping and on the rolling line width, forms the uniform flow, forms flat jet through slit again steel plate is cooled off.

Advantage of the present invention is:

1. the present invention can realize multiple tracks damping setting through the off-centre of interior pipe and outer tube is fixing, makes this device volume little, helps being installed in back mill table spacing narrow space.Sectional area promptly interior tube chamber cross-sectional area e in medium inlet is more than or equal to the sectional area sum of the through flow hole b on the interior pipe, and cooling medium is through in through flow hole to cavity one a, and is balanced on the width of the realization aqueous medium first time.The through flow hole area sum of interior pipe is more than or equal to the area of cavity minimum distance c between interior pipe and the outer tube; Through cavity minimum distance c cooling medium between interior pipe and the outer tube by cavity one a to cavity two d, realize the equilibrium on the width of aqueous medium for the second time.Therefore, cooling medium is uniform on the width of whole flat jet.

2. between the machined lath on adjustment plate and the outer tube, through many groups of adjustment bolts and fastening bolt, the slit of achieve effective control flat jet slit.Because the adjustment plate is a long and narrow lath, very easily distortion in process and use.This device interacts through adjustment bolt and fastening bolt, can effectively control the distortion of adjustment plate.Adjustment bolt part is two kinds: a kind of is hold-down bolt, and a kind of is turnbuckle.Through the adjustment of adjustment bolt, control forms the slit thickness of wanting, and optimum thickness is 1-4mm.Through the fastening adjustment plate of fastening bolt, can guarantee the consistency of thickness in slit fully then, guarantee to realize the even flat jet on the nozzle thickness direction.

This device working environment be in heat treat the cold drawing material above or below, be exposed under the very heat-flash radiation.Consider that seamless pipe is stressed more even on all directions, on-deformable characteristic, therefore, this installs preferred seamless pipe is the primary structure material.On the tube wall of outer tube, be welded with many group reinforcements, increase the rigidity of device, effectively anti-locking apparatus thermal deformation.

4. this device is provided with two mudholes, respectively the impurity of the inner diverse location of discharger.Use or cooling medium when containing impurity long-term, impurity can be discharged this device through the end mudhole.Effectively the obstruction in prevention nozzle slit further guarantees the uniformity on nozzle flat jet width and the thickness direction.Realize long-term the use, save maintenance cost.

5. this device adopts the tilting jet, and promptly the jet expansion water jet that has a certain pressure has a certain degree with the sheet material that is cooled, and realizes jet impulse heat exchange and nucleate boiling heat exchange, realizes the rapid and uniform cooling with this.

Description of drawings

Fig. 1 the present invention produces the front view of the cooling device of flat jet;

Fig. 2 is the profile of Fig. 1.

The specific embodiment

A kind of device that produces flat jet; See Fig. 1,2: pipe 4 and C shape are managed eccentric stationary positioned bar 14 between the lath 1 of 5 one sides in it is characterized in that; Cavity between pipe and outer tube in forming; C shape is managed 5 opposite sides lath 26 that welds and the adjustment laths 1 that lath 1 adds and is axially formed a slit h, fixes forming cavity between inner and outer pipes through the off-centre of positioning strip 14: be divided into cavity one a, cavity minimum range c, cavity two d.Slit h width can be regulated through turnbuckle 10 and hold-down bolt 9, and external diameter of pipe prevents distortion to being welded with multiple tracks reinforcement 8 outside; Interior pipe 4 inlet end flange 15 link to each other with the cooling medium pipeline, and interior pipe 4 ports of export are provided with inner chamber sewage draining exit f; Interior pipe 4 has 2 row's through flow hole b; Pipe 4 was after through flow hole b flow into eccentric cavity in cooling medium got into from inlet end flange 15; Cooling medium after being provided with through the multiple tracks damping forms the uniform flow on the rolling line width, form flat jet through slit again steel plate is cooled off.

Manufacturing approach: adjustment lath 1 is connected on the lath 1 through fastening bolt 2, through solder technology lath 1, lath 26 is welded on axial each side of C shape pipe 5 respectively, seam become one have a slit h outer tube.An interior pipe 4 that axially has the neat through flow hole b of 2 rows is placed in the C shape pipe 5 with one heart, and between interior pipe and outer tube, add positioning strip 14 eccentric fixing welding, form cavity one a, cavity minimum distance c, opposite side cavity two d between inner and outer pipe, these three cavitys.Interior pipe 4 arrival end flanges 15 link to each other with the cooling medium pipeline, and the cavity arrival end is through end plate one 7 welded seals between inner and outer pipes; Interior pipe 4 ports of export are with steel plate 16 welded seals; Dismountable plug screw 12 is set on steel plate 16; The special-shaped flange 11 of detachable blowdown is set through end plate 2 17 at the inner and outer pipes cavity port of export; And sewage draining exit f is set on steel plate 16, and, opens 12 couples of inner chamber e of plug screw and carry out blowdown with plug screw 12 shutoff.The port of export forms sealing through mounting flange on the end plate 2 17 11, and can cavity carries out blowdown between 11 pairs of inner and outer pipes of flange through opening.

The actual internal area of pipe 4 was more than or equal to the area sum of 2 row's through flow hole b in this device was designed to; The area sum of 2 drain hole b is passed through area more than or equal to the cooling medium of minimum distance c; After cooling medium gets into inner chamber e; Flow into cavity a through through flow hole b, flow into cavity two d by cavity one a through minimum distance c again.Flow through successively inner chamber e, cavity one a, cavity two d of cooling medium is full of current stabilization through three times, forms uniform injection stream by cavity two d through slit h at last.

Minimum distance c has the certain distance setting apart from jet expansion; The position of minimum distance c is the several times of this minimum range c apart from the distance of jet expansion; Make cooling medium bigger media stabilize space arranged at cavity two d; Therefore, on the thickness direction of nozzle width, obtain injection stream very uniformly.

Lath 26 processing requests are smoothly bright and clean, and slippery inner surface plays guide functions stably.It is gradually at an angle wide that lath 26 is designed to the cross section, forms a kind of flat jet and angled to coolant with adjustment lath 1.

Adjustment lath 1 is installed in machined lath one 3 outsides through fastening bolt 2, is provided with resistant to elevated temperatures sealing 13 at adjustment lath 1 with lath one 3 junctions, prevents the leakage of nozzle interior cooling medium.Fastening through a plurality of fastening bolts 2 prevents to adjust the distortion of lath 1 on width and thickness direction.

On machined lath 1, be provided with turnbuckle 10 and hold-down bolt 9, turnbuckle 10 is connected with adjustment lath 1, and regulating turnbuckle 10 can increase slit width; The end of hold-down bolt 9 withstands on adjustment lath 1, and adjustment hold-down bolt 9 can reduce slit width.Turnbuckle 10 interacts with hold-down bolt 9 has increased the adjustment precision of slit, guarantees the uniformity of slit width.

This device is managed 5 outsides C shape and is welded with multiple tracks reinforcement 8, and reinforcement 8 is a round steel, can effectively prevent the outer tube distortion.

Can change fully within the scope of the present invention, the caliber of pipe and C shape pipe adapts to the designs of nozzles of different flow in the flow angle of shortening on this device length direction or prolongation, change slit, the change.

Claims

1. cooling device that produces flat jet; Cavity between pipe and outer tube in pipe and C shape pipe forms through positioning strip off-centre is fixing in it is characterized in that; And axially forming a slit; Slit width can be regulated through turnbuckle and hold-down bolt, and external diameter of pipe prevents distortion to being welded with the multiple tracks rinforcement bar outside; Interior tube inlet end flange links to each other with the cooling medium pipeline, and the interior pipe port of export is provided with the inner chamber sewage draining exit; Interior pipe has 2 row's through flow holes; Pipe was after through flow hole flow into eccentric cavity in cooling medium got into from the inlet end flange; Cooling medium is provided with the back through the multiple tracks damping and on the rolling line width, forms the uniform flow, forms flat jet through slit again steel plate is cooled off.

2. according to the cooling device of the said generation flat jet of claim 1; It is characterized by interior pipe (4) and C shape the pipe (5) one sides lath one (3) between stationary positioned bar (14); The lath two (6) that C shape is managed the welding of (5) opposite side forms slit h with lath one (3) additional adjustment lath (1), fixes forming cavity between inner and outer pipes through the off-centre of positioning strip (14): be divided into cavity one (a), minimum range (c), cavity two (d).

3. according to the cooling device of the said generation flat jet of claim 1, it is characterized by on the steel plate (16) of interior pipe (4) port of export welding dismountable plug screw (12) is set; The special-shaped flange (11) of detachable blowdown is set through end plate two (17) at the inner and outer pipes cavity port of export.

4. according to the cooling device of the said generation flat jet of claim 1; It is characterized by adjustment lath (1) is connected on the lath one (3) through fastening bolt (2); Lath one (3), lath two (6) are welded on axial each side of C shape pipe (5) respectively, seam become one have slit (h) outer tube; Mach lath one (3) is provided with turnbuckle (10) and hold-down bolt (9), and the turnbuckle (10) of regulating slit width is connected with adjustment lath (1), and hold-down bolt (9) end that can reduce slit width withstands on the adjustment lath (1).