阅读说明：本技术 一种轧线冷却装置 (Rolling line cooling device ) 是由 袁国 李振垒 陈冬 康健 王超 刘营营 王黎筠 王国栋 于 2021-08-24 设计创作，主要内容包括：本发明公开了一种轧线冷却装置,包括多根辊道、机架、至少两根下集水管、集管装置和主供水管路,多根辊道用于传递钢板；至少两根下集水管沿着钢板传递方向铺设,并位于两根相邻辊道之间,用于对钢板下表面喷射冷却水；集管装置与机架转动连接,包括至少两根上集水管,上集水管与下集水管数量相等且一一相对设置,集管装置用于对钢板上表面喷射冷却水；主供水管路与所有集水管连接；其中上集水管与下集水管均为高密度喷射流集管。本发明提供的轧线冷却装置,上集水管和下集水管与主供水管路连接,且采用高密度喷射流集管,数量相等且一一对应设置,同时上集水管和下集水管分别对辊道上钢板的上下表面喷射冷却水进行冷却,保证钢板冷却的均匀性。(The invention discloses a rolling line cooling device which comprises a plurality of roller ways, a frame, at least two lower water collecting pipes, a header device and a main water supply pipeline, wherein the plurality of roller ways are used for transferring steel plates; at least two lower water collecting pipes are laid along the steel plate transmission direction, are positioned between two adjacent roller ways and are used for spraying cooling water to the lower surface of the steel plate; the collecting pipe device is rotationally connected with the rack and comprises at least two upper collecting pipes, the number of the upper collecting pipes is equal to that of the lower collecting pipes, the upper collecting pipes and the lower collecting pipes are arranged oppositely one by one, and the collecting pipe device is used for spraying cooling water to the upper surface of the steel plate; the main water supply pipeline is connected with all the water collecting pipes; wherein the upper header and the lower header are both high-density jet flow headers. According to the rolling line cooling device provided by the invention, the upper water collecting pipe and the lower water collecting pipe are connected with the main water supply pipeline, the high-density jet flow collecting pipes are adopted, the number of the high-density jet flow collecting pipes is equal, the high-density jet flow collecting pipes are arranged in a one-to-one correspondence manner, and meanwhile, the upper water collecting pipe and the lower water collecting pipe respectively spray cooling water on the upper surface and the lower surface of a steel plate on a roller pipeline, so that the uniformity of cooling the steel plate is ensured.)

1. A line cooling apparatus, comprising:

a plurality of roller ways (1) for transferring steel plates;

a frame (2);

the at least two lower water collecting pipes (3) are laid along the steel plate transmission direction and are positioned between the two adjacent roller ways (1), and the at least two lower water collecting pipes (3) are used for spraying cooling water to the lower surface of the steel plate;

the header device is rotationally connected with the rack (2) and comprises at least two upper water collecting pipes (4), the number of the upper water collecting pipes (4) is equal to that of the lower water collecting pipes (3), the upper water collecting pipes and the lower water collecting pipes are arranged oppositely one by one, and the header device is used for spraying cooling water to the upper surface of the steel plate;

the main water supply pipeline is connected with all the upper water collecting pipes (4) and all the lower water collecting pipes (3);

wherein the upper water collecting pipe (4) and the lower water collecting pipe (3) are both high-density jet flow collecting pipes.

2. The rolling line cooling device according to claim 1, characterized in that said upper and lower headers (4, 3) comprise a set of regulating valves for regulating the water supply and/or the open/closed state respectively corresponding to each of said upper and lower headers (4, 3).

3. The rolling line cooling device according to claim 2, characterized in that the upper collecting pipe (4) and the lower collecting pipe (3) each comprise a threaded hole group (401) and a nozzle, the threaded hole group (401) is formed along the length direction of the upper collecting pipe (4) or the lower collecting pipe (3), each threaded hole group (401) comprises at least two rows of threaded holes distributed uniformly and at high density, the nozzles are in threaded connection with the threaded holes, and the spray directions of the nozzles located in the upper collecting pipe (4) and the nozzles located in the lower collecting pipe (3) are all at the same angle with the steel plate vertical direction.

4. The rolling line cooling device according to claim 3, characterized in that the upper header (4) and the lower header (3) are made of stainless steel.

5. The rolling line cooling device according to claim 2, characterized in that said header means further comprises a first cover plate (5) and a second cover plate (6), at least two of said upper header pipes (4) being provided on said second cover plate (6); the first cover plate (5) is positioned between the adjacent thread groups (401) and is connected with the outer walls of the two adjacent upper water collecting pipes (4).

6. The mill line cooling apparatus according to claim 1, wherein the high density jet header is selected from one or more of a forward inclined high density jet header, a reverse inclined high density jet header, and a vertical high density jet header.

7. The rolling line cooling device according to claim 1, further comprising a first power device (7), wherein the first power device (7) is arranged on the frame (2) and is used for driving the header device to lift so as to adjust the distance between the upper header (4) and the roller table (1).

8. A rolling line cooling device according to claim 1, characterized in that it comprises a second power device (8), a rotating member (9), a rotating shaft (10) and a connecting member (11), the rotating shaft (10) is arranged on the frame (2), the second power device (8) is arranged on the frame (2), the output end of the second power device (8) is rotationally connected with the first end of the rotating part (9), the second end of the rotating part (9) is fixedly connected with the rotating shaft (10), the header device is connected with the connecting piece (11), the connecting piece (11) is fixedly connected with the rotating shaft (10), the output end of the second power device (8) drives the first end of the rotating part (9) to move up and down, so that the second end of the rotating part (9) drives the rotating shaft (10) to rotate.

9. The rolling line cooling device according to claim 8, further comprising a locking device (12), wherein the locking mechanism (12) is provided on the frame (2) for locking the second power device (8) after the header device reaches a predetermined position.

10. The rolling line cooling device according to claim 1, further comprising an air blowing device and a detection device, wherein the air blowing device is arranged around the roller table (1) and is used for removing residual water on the surface of the steel plate; the detection devices are arranged at two ends of the roller way (1) in the transmission direction and are used for measuring the surface parameters of the steel plate.

Technical Field

The invention relates to the technical field of strip steel cooling of hot continuous rolling plates of a rolling line, in particular to a cooling device of the rolling line.

Background

In the traditional hot continuous rolling plate strip steel production process, a steel plate rolling line needs to be cooled by laminar flow cooling, and when the strip steel is thick and the transmission speed is high or various steel with high requirements on the cooling speed is produced, the conventional laminar flow cooling is difficult to meet the requirements of products on the cooling speed, so that the rejection rate of plates is increased. The ultra-fast cooling device improves the structure and the performance of the steel plate by changing the cooling condition of the rolling line of the hot rolled steel plate, but in the process of controlling cooling, the optimal matching condition needs to be selected for the water quantity of a water pipe, the opening and closing state of a collecting pipe, the speed of a roller way and the like, and the control difficulty is high.

At present, the encryption cooling device with larger cooling capacity still has the problems in the cooling process:

(1) regardless of whether the cooling by the encryption or the laminar flow is adopted, since the cooling is performed with a large amount of water, a boiling state in which film boiling and transition boiling coexist occurs, the cooling process is unstable, and it is difficult to ensure the uniformity of the cooling.

(2) In order to obtain steel materials consisting of low-temperature phase change structures such as martensite, bainite and the like, the conditions of poor plate shapes such as warping and the like are easy to occur to strip steel in the process of adopting laminar cooling and encrypted cooling, and further the production progress and the product quality are influenced.

Therefore, a line cooling apparatus capable of ensuring uniform cooling of a steel sheet is urgently under study.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a rolling line cooling device, which solves the problems that the cooling process of the cooling device in the prior art is unstable and the uniformity of a steel plate cannot be ensured.

The invention provides a rolling line cooling device, comprising:

a plurality of roller ways for transferring the steel plates;

a frame;

the at least two lower water collecting pipes are laid along the steel plate transmission direction and are positioned between the two adjacent roller ways, and the at least two lower water collecting pipes are used for spraying cooling water to the lower surface of the steel plate;

the header device is rotatably connected with the rack and comprises at least two upper water collecting pipes, the number of the upper water collecting pipes is equal to that of the lower water collecting pipes, the upper water collecting pipes and the lower water collecting pipes are arranged oppositely, and the header device is used for spraying cooling water to the upper surface of the steel plate;

the main water supply pipeline is connected with all the upper water collecting pipes and all the lower water collecting pipes;

wherein the upper header and the lower header are both high density jet flow headers.

Furthermore, go up the water collecting pipe with lower water collecting pipe includes the regulating valve group, the regulating valve group is used for adjusting every go up the water collecting pipe with the water supply volume and/or the open and close state that lower water collecting pipe corresponds respectively.

Furthermore, go up the water collecting pipe with the water collecting pipe all includes screw thread punch combination and nozzle down, screw thread punch combination follows the length direction of going up the water collecting pipe or water collecting pipe down is seted up, every screw thread punch combination includes two row at least even high-density distribution's screw hole, the nozzle with screw hole threaded connection is located go up the water collecting pipe the nozzle with be located water collecting pipe down the injection direction of nozzle all with the steel sheet vertical direction is the same angle.

Furthermore, the upper water collecting pipe and the lower water collecting pipe are both made of stainless steel.

Furthermore, the header device also comprises a first cover plate and a second cover plate, and at least two upper water collecting pipes are arranged on the second cover plate; the first cover plate is positioned between the adjacent thread groups and is connected with the outer walls of the two adjacent upper water collecting pipes.

Further, the high-density jet flow header is one or more of a forward inclined high-density jet flow header, a reverse inclined high-density jet flow header and a vertical high-density jet flow header.

Further, the rolling line cooling device comprises a first power device, and the first power device is arranged on the rack and used for driving the header device to lift so as to adjust the distance between the upper header and the roller way.

Further, it includes second power device, rotates piece, rotation axis and connecting piece to roll line cooling device, the rotation axis is established in the frame, second power device establishes in the frame, second power device's output with the first end of rotating the piece is rotated and is connected, the second end of rotating the piece with rotation axis fixed connection, the header device with the connecting piece is connected, the connecting piece with rotation axis fixed connection, second power device's output drives the first end of rotating the piece reciprocates, so that the second end of rotating the piece drives the rotation axis rotates.

Further, the rolling line cooling device further comprises a locking device, and the locking mechanism is arranged on the rack and used for locking the second power device after the header device reaches a preset position.

Further, the rolling line cooling device also comprises an air blowing device and a detection device, wherein the air blowing device is arranged around the roller way and is used for removing residual water on the surface of the steel plate; the detection devices are arranged at two ends of the roller way in the transmission direction and are used for measuring the surface parameters of the steel plate.

According to the rolling line cooling device provided by the invention, the upper water collecting pipe and the lower water collecting pipe are both connected with the main water supply pipeline, the upper water collecting pipe and the lower water collecting pipe are both provided with high-density jet flow collecting pipes in equal number and are arranged in a one-to-one correspondence manner, and meanwhile, the upper water collecting pipe and the lower water collecting pipe respectively spray cooling water on the upper surface and the lower surface of an upper steel plate of the rolling pipeline to cool, so that the uniformity of cooling the steel plate is ensured.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is an overall configuration view of a rolling line cooling apparatus;

FIG. 2 is a view showing a structure of one side of a header assembly;

FIG. 3 is a view showing the other side of the header assembly.

In the figure:

1-roller table, 2-frame, 3-lower header, 4-upper header, 401-nozzle plate, 5-first cover plate, 6-second cover plate, 7-first power device, 8-second power device, 9-rotating part, 10-rotating shaft, 11-connecting piece, 12-locking device.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The invention provides a rolling line cooling device, which is shown in figure 1 and comprises a plurality of roller ways 1, a frame 2, at least two lower water collecting pipes 3, a header device and a main water supply pipeline, wherein the plurality of roller ways 1 are used for transferring steel plates; at least two lower water collecting pipes 3 which are laid along the steel plate transmission direction and are positioned between two adjacent roller ways 1, wherein the at least two lower water collecting pipes 3 are used for spraying cooling water to the lower surface of the steel plate; the header device is rotatably connected with the frame 2 and comprises at least two upper water collecting pipes 4, the number of the upper water collecting pipes 4 is equal to that of the lower water collecting pipes 3, the upper water collecting pipes 4 and the lower water collecting pipes 3 are arranged oppositely, and the header device is used for spraying cooling water to the upper surface of the steel plate; the main water supply pipeline is connected with all the upper water collecting pipes 4 and all the lower water collecting pipes 3; wherein, the upper header 4 and the lower header 3 are both high-density jet flow headers.

According to the rolling line cooling device provided by the invention, the upper water collecting pipe 4 and the lower water collecting pipe 3 are both connected with a main water supply pipeline, the upper water collecting pipe 4 and the lower water collecting pipe 3 are both provided with high-density jet flow collecting pipes in equal number and are arranged in a one-to-one correspondence manner, and meanwhile, the upper water collecting pipe 4 and the lower water collecting pipe 3 respectively spray cooling water on the upper surface and the lower surface of a steel plate on a roller pipeline to ensure the cooling uniformity of the steel plate, wherein the length of the upper water collecting pipe 4 and the length of the lower water collecting pipe 3 are matched with the width of a production line, and the length is preferably 100mm-3500 mm.

Further, the upper water collecting pipe 4 and the lower water collecting pipe 3 include an adjusting valve group for adjusting the water supply amount and/or the open/close state respectively corresponding to each of the upper water collecting pipe 4 and the lower water collecting pipe 3. In this embodiment, the upper header pipe 4 and the lower header pipe 3 are directly connected to the main water supply pipeline, each of the upper header pipe 4 and the lower header pipe 3 supplies water independently, and the injection state of the header pipe can be adjusted by using the adjusting valve group according to the cooling state of the steel plate by arranging the adjusting valve group on the upper header pipe 4 and the lower header pipe 3, so that the flow and the force of the header pipe injection can be controlled at any time, and the cooling capacity of the steel plate can be adjusted at any time.

Further, the upper water collecting pipe 4 and the lower water collecting pipe 3 respectively comprise a threaded hole group 401 and a nozzle, the threaded hole group 401 is arranged along the length direction of the upper water collecting pipe 4 or the lower water collecting pipe 3, each threaded hole group 401 comprises at least two rows of threaded holes distributed in a uniform high density mode, the nozzles are in threaded connection with the threaded holes, and the spraying directions of the nozzles located in the upper water collecting pipe 4 and the nozzles located in the lower water collecting pipe 3 are all at the same angle with the vertical direction of the steel plate. In this embodiment, adopt the nozzle structure to spray, solved prior art and adopted the gap header and the problem of the water seal that exists and the drainage in the cooling process, the nozzle that is in upper header 4 and lower header 3 sprays the steel sheet with perpendicular to the steel sheet simultaneously or with the steel sheet vertical direction be the same angle, guarantees that the injection direction and the angle of nozzle are unanimous for each position of steel sheet can both evenly cool off.

Further, the upper water collecting pipe 4 and the lower water collecting pipe 3 are both made of stainless steel. In the embodiment, the upper water collecting pipe 4 and the lower water collecting pipe 3 are all made of stainless steel, so that all the water collecting pipes are rust-proof and are not easy to deform in a high-temperature environment.

Further, referring to fig. 2 and 3, the header assembly further includes a first cover plate 5 and a second cover plate 6, and at least two upper header pipes 4 are provided on the second cover plate 6; the first cover plate 5 is located between the adjacent thread groups 401 and connected with the outer walls of two adjacent upper water collecting pipes 4. In this embodiment, will be located the adjacent upper header pipe 4 connection on the second apron 6 through first apron 5, every first apron 5 is placed between adjacent two sets of screw thread group 401, and with adjacent upper header pipe 4 outer wall lug connection, it leaves the gap to avoid between upper header pipe 4 and the first apron 5, prevent when the steel sheet takes place the warpage, the steel head bores the gap between apron and the header, cause whole production line to stop work, can avoid the cooling water to splash through setting up the apron simultaneously, play the effect of sealing up water, and also can play the effect of protection header.

Specifically, in the above embodiment, the high-density jet flow header is one or more of a forward tilting high-density jet flow header, a reverse tilting high-density jet flow header, and a vertical high-density jet flow header. In the embodiment, the upper water collecting pipe 4 and the lower water collecting pipe 3 both adopt high-density jet flow collecting pipes, the jet angle of the high-density jet flow collecting pipes and the angle of the horizontal direction are 0-180 degrees, the high-density jet flow collecting pipes are divided according to the jet form of the collecting pipes, the high-density jet flow collecting pipes are divided into forward tilting high-density jet flow collecting pipes, reverse tilting high-density jet flow collecting pipes and vertical high-density jet flow collecting pipes, the collecting pipes of each jet form have different specifications and sizes, the water yield of the collecting pipes of different calibers is different, the cooling capacity is different, in the actual steel plate cooling process, through the calculation of the cooling process, a proper cooling strategy is adopted, one or more of the forward tilting type or reverse tilting type or vertical high-density jet flow collecting pipes are adopted, through the reasonable matching and crossing arrangement of the collecting pipes of different angle types, the cooling scheme is matched, the device can realize high-uniformity and high-efficiency cooling of the steel plate, and can terminate the cooling process in the equipment area in time, so as to realize reasonable control of the phase change structure evolution process.

Specifically, in the above embodiment, the rolling line cooling device further includes the first power device 7, and the first power device 7 is disposed on the frame 2 and is used for driving the header device to lift so as to adjust the distance between the upper header 4 and the roller table 1. In this embodiment, adopt first power device 7 to drive the header device and go up and down, change the distance between header 4 and the roll table 1 for the steel sheet homoenergetic of different thickness is evenly cooled off, and the regulation distance is preferred 300mm-1500mm, and wherein, first power device 7 is preferred spiral elevator, adopts spiral elevator can be fine avoid stretching out and the in-process of withdrawal vibration, makes whole equipment more steady at the lift in-process.

Specifically, in the above embodiment, referring to fig. 1, the rolling line cooling device includes the second power device 8, the rotating member 9, the rotating shaft 10 and the connecting member 11, the rotating shaft 10 is disposed on the frame 2, the second power device 8 is disposed on the frame 2, the output end of the second power device 8 is rotatably connected to the first end of the rotating member 9, the second end of the rotating member 9 is fixedly connected to the rotating shaft 10, the header device is connected to the connecting member 11, the connecting member 11 is fixedly connected to the rotating shaft 10, and the output end of the second power device 8 drives the first end of the rotating member 9 to move up and down, so that the second end of the rotating member 9 drives the rotating shaft 10 to rotate. In this embodiment, the second power device 8 drives the rotation member 9 to rotate, so as to drive the rotation shaft 10 to rotate, and further to rotate the header device, the arrangement of the turnover part of the present application can enable the upper water collecting pipe 4 and the lower water collecting pipe 3 on the header device to form different spraying angles, and the steel plates of different shapes and specifications can be uniformly cooled.

Further, the rolling line cooling device further comprises a locking device 12, and the locking device 12 is arranged on the frame 2 and used for locking the second power device 8 after the header device reaches a preset position. In the embodiment, after the header device reaches the position scheduled to be cooled, the locking mechanism 12 located on the frame 2 locks the second power device 8 to fix the second power device 8, so that the second power device 8 does not move any more, the header device is stabilized at the predetermined position to start the cooling process, and the stability of the device in the cooling process is improved.

Specifically, in the above embodiment, the rolling line cooling device further includes an air blowing device and a detection device, the air blowing device is disposed around the roller table 1, and the air blowing device is used for removing water remaining on the surface of the steel plate; the detection devices are arranged at two ends of the roller way 1 in the transmission direction and are used for measuring the surface parameters of the steel plate. In this embodiment, the air-blowing device can sweep the residual water that the steel sheet surface is detained to improve steel sheet surface cooling efficiency, reduce and lead to the uneven condition of steel sheet cooling to take place because of the stagnant water boils at the steel sheet surface, after the air-blowing device swept the residual water on steel sheet surface, the detection device that conveniently lies in roll table direction of transfer both ends carries out the parameter measurement to the steel sheet surface more, with the strategy of real-time adjustment to steel sheet cooling.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.