Square and round billet shared movable section for continuous casting machine and continuous casting machine

Abstract

The utility model provides a square and round billet shared movable section for a continuous casting machine and the continuous casting machine. The square and round billet shared movable section for the continuous casting machine comprises a frame, a movable section and a movable section, the roller assembly is used for pulling and guiding the flexible dummy bar and comprises an upper carrier roller and a lower carrier roller which protrude out of the inner circumferential wall of the frame inwards; the multiple spraying frames are distributed in parallel in the height direction of the frame; in the height direction perpendicular to the frame, every two adjacent layers of spraying frames are arranged in a staggered mode, and the two spraying frames on the upper layer adjacent to each carrier roller in the height direction of the frame are located on the two sides of the carrier rollers in the circumferential direction respectively. Each spraying frame is provided with a plurality of assembling holes used for installing spraying strips in the length direction of the spraying frame. The square and round billet shared movable section for the continuous casting machine is reasonable in layout, and can be suitable for cooling sections of round billets and square billets in various sizes under the condition that a flexible dummy bar is effectively supported and pulled.

Description

Technical Field

[0001] The utility model belongs to the technical field of smelting, and in particular relates to a common movable section for square and round billets of a continuous casting machine and the continuous casting machine. Background Art

[0002] In steel production, the ingots produced by the continuous casting machine need to be cooled secondary. The movable section of the continuous casting machine is the main equipment in the secondary cooling zone, which is installed below the crystallizer and above the fixed section. The rollers of the movable section serve as a guide when reinstalling the dummy rod, and the spray rack included in it is used to install spray bars to provide water and air for cooling the ingots. In the past, the movable section of square and round billets required two frames to support the spray racks, one is a frame dedicated to round billets, and the other is a frame dedicated to square billets. In this way, in the process of switching from round billets to square billets, the entire round billet movable section and the square billet movable section need to be lifted out and replaced accordingly. For steel mills, replacing the entire frame is time-consuming and labor-intensive. When the size of the square billet reaches 250mm×250mm and the size of the round billet increases from 180mm (radius) to 450mm (there are other sizes between 180mm and 450mm), the flexible dummy rod is still needed, so a roller assembly (including rollers and brackets) needs to be set on the frame of the movable section to support and pull the flexible dummy rod. The movable section area is in a high temperature environment, and its frame also needs to be equipped with a water cooling structure, so the overall structure of the frame becomes very complicated. For example, it becomes very difficult to let the spray bars used for square billets and round billets share the spray frame of this section. Utility Model Content

[0003] In view of the above-mentioned problems existing in the prior art, the main purpose of the utility model is to provide a common movable section for square and round billets for a continuous casting machine and a continuous casting machine. The common movable section for square and round billets for a continuous casting machine has a reasonable layout and can be suitable for cross-sectional cooling of various sizes of round billets and square billets while effectively supporting and pulling the flexible ingot guide rod.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] The utility model provides a common movable section for square and round billets of a continuous casting machine, and the common movable section for square and round billets of a continuous casting machine comprises:

[0006] frame;

[0007] A roller assembly, the roller assembly is used to pull and guide the flexible dummy rod, and comprises an upper roller and a lower roller protruding inwardly from the inner peripheral wall of the frame;

[0008] A spray rack, wherein a plurality of the spray racks are distributed in parallel along the height direction of the frame; in a direction perpendicular to the height direction of the frame, two adjacent layers of the spray racks are staggered, and the two spray racks on the upper layer adjacent to each roller in the height direction of the frame are respectively located on both sides of the roller in the circumferential direction; each of the spray racks is provided with a plurality of assembly holes for installing spray strips along its length direction.

[0009] As a further description of the above technical solution, the frame and the spray rack are formed by integrally splicing square tubes.

[0010] As a further description of the above technical solution, the spray racks on each layer are arranged in pairs at equal intervals along the circumference of the frame to install the spray strips.

[0011] As a further description of the above technical solution, one end of the air inlet branch pipe and the water inlet branch pipe included in each of the spray strips is correspondingly connected to a pair of the spray racks;

[0012] One end of the air inlet branch pipe and the water inlet branch pipe included in each spray bar away from the spray frame is sealed and connected to an aerosol nozzle.

[0013] As a further description of the above technical solution, an extension line of the axis of each aerosol nozzle passes through the center of the square billet / round billet, and the distances from each aerosol nozzle to the center axis of the square billet / round billet are equal.

[0014] As a further description of the above technical solution, the angles formed by the axes of two adjacent pairs of the spray racks on the same layer are both 45°.

[0015] As a further description of the above technical solution, in the height direction perpendicular to the frame, two adjacent layers of the spray racks are staggered by 45 degrees.

[0016] As a further description of the above technical solution, each pair of the spray racks is provided with a plurality of marks for indicating the specifications of the blanks, and the marks are arranged in a one-to-one correspondence with the assembly holes.

[0017] The utility model also provides a continuous casting machine, comprising the common movable section for square and round billets used in the continuous casting machine as described above.

[0018] By means of the above technical solution, the outstanding effects of the utility model are:

[0019] In the common movable section for square and round billets of the continuous casting machine provided by the utility model, the frame is in the shape of a long cage, a plurality of spray racks are distributed in parallel along the height direction of the frame, and the roller assembly for pulling and guiding the flexible ingot guide rod includes an upper roller and a lower roller which are directly assembled on the frame and protrude inwardly from the cage-shaped inner peripheral wall of the frame, so that the flexible ingot guide rod can be directly used for guiding and pulling when it is needed; the plurality of spray racks are distributed in parallel along the height direction of the frame to install spray strips, and in the height direction perpendicular to the frame, two adjacent layers of spray racks are staggered, so that the square billet or round billet in the frame can be sprayed and cooled in a three-dimensional space in multiple directions, and at the same time, the upper roller adjacent to each roller in the height direction of the frame The two spray racks of the layer are respectively located on both sides of the roller in the circumferential direction. Therefore, neither the upper roller nor the lower roller will affect the water mist sprayed by the spray bar to reach the surface of the square billet and round billet in the frame, thereby uniformly cooling the billet. The roller assembly can also be normally connected to the external water cooling pipeline to water-cool the frame. Among them, each spray rack is provided with a plurality of assembly holes along its length direction. Before cooling the billet (square billet or round billet), it is only necessary to adjust and assemble the spray bars to the assembly holes in the corresponding positions according to the size of the billet, without replacing the entire movable section, it can be suitable for cooling cross-sections of various sizes of round billets and square billets. The replacement operation is simpler and faster, which is more conducive to improving production efficiency and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a common movable section for square and round billets used in a continuous casting machine in an embodiment of the utility model without spray strips and external pipelines installed;

[0021] Figure 2 This is a schematic diagram of the structure after the spray strips and external pipelines are installed in the common movable section of the square and round billets used in the continuous casting machine in the embodiment of the utility model;

[0022] Figure 3 for Figure 2 AA section view;

[0023] Figure 4 for Figure 2 BB cross-section diagram;

[0024] Figure 5 for Figure 1 A partial enlarged view of point A.

[0025] Description of Figure Numbers:

[0026] 1. Frame; 2. Roller assembly; 21. Upper roller; 22. Lower roller; 3. Spray rack; 31. Assembly hole; 4. Spray strip; 41. Air inlet branch pipe; 42. Water inlet branch pipe; 5. Aerosol nozzle; 6. Label. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present utility model, it should be noted that the terms "upper", "middle", "lower", "inside", "outside", "front", "back", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following describes the implementation method of the present utility model based on its overall structure.

[0029] See also Figures 1 to 5 The utility model discloses a common movable section for square and round billets of a continuous casting machine, and the common movable section for square and round billets of a continuous casting machine comprises:

[0030] Frame 1;

[0031] A roller assembly 2, the roller assembly 2 is used for pulling and guiding the flexible dummy rod, and comprises an upper roller 21 and a lower roller 22 protruding inwardly from the inner peripheral wall of the frame 1;

[0032] A spray rack 3, wherein a plurality of the spray racks 3 are distributed in parallel along the height direction of the frame 1; in the height direction perpendicular to the frame 1, two adjacent layers of the spray racks 3 are staggered, and the two spray racks 3 of the upper layer adjacent to each roller in the height direction of the frame 1 are respectively located on both sides of the roller in the circumferential direction; each of the spray racks 3 is provided with a plurality of assembly holes 31 for installing the spray strips 4 along its length direction.

[0033] In the above-mentioned setting mode, the frame 1 is in the shape of a long cage, and the plurality of spray racks 3 are distributed in parallel along the height direction of the frame 1; the upper roller 21 and the lower roller 22 included in the roller assembly 2 for pulling and guiding the flexible ingot guide rod are directly mounted on the frame 1 and protrude inwardly from the cage-shaped inner circumferential wall of the frame 1, so that the flexible ingot guide rod can be directly used for guiding and pulling when it is needed; the plurality of spray racks 3 are distributed in parallel along the height direction of the frame 1 to install the spray strips 4, and in the height direction perpendicular to the frame 1, the adjacent two layers of the spray racks 3 are staggered, so that the square billet or round billet in the frame 1 can be subjected to multi-directional spray cooling operation in three-dimensional space, and at the same time, the rollers adjacent to each roller in the height direction of the frame 1 The two spray racks 3 on the upper layer are respectively located on both sides of the roller in the circumferential direction. Therefore, neither the upper roller 21 nor the lower roller 22 will affect the water mist sprayed by the spray bar 4 from reaching the surface of the square billet and round billet in the frame 1, thereby uniformly cooling the billet. The roller assembly 2 can also be normally connected to the external water cooling pipeline to water-cool the frame 1. Each of the spray racks 3 is provided with a plurality of assembly holes 31 along its length direction. Before cooling the billet (square billet or round billet), it is only necessary to adjust and assemble the spray bars 4 to the assembly holes 31 at the corresponding positions according to the size of the billet. Without replacing the entire movable section, it can be suitable for cross-sectional cooling of various sizes of round billets and square billets. The replacement operation is simpler and faster, which is more conducive to improving production efficiency and saving production costs.

[0034] See also Figures 1 to 4 Specifically, in this embodiment, the frame 1 and the spray rack 3 are formed by integrally splicing square tubes. The frame 1 is generally in the shape of a long cage. The spray rack 3 is distributed in parallel in 4 layers along the height direction of the frame 1, and the adjacent upper and lower layers of the spray rack 3 are staggered, so that the spray strips 4 assembled one by one on the spray rack 3 are spiral-shaped as a whole to spray and cool the square billet or round billet in the frame 1, and the cooling is more uniform.

[0035] See also Figure 1 ,as well as Figures 3 to 5Specifically, in this embodiment, the spray racks 3 of each layer are arranged in pairs at equal intervals along the circumference of the frame 1 to install the spray bars 4. More specifically, one end of the air inlet branch pipe 41 and the water inlet branch pipe 42 included in each spray bar 4 is correspondingly connected to a pair of the spray racks 3 so as to be connected to the external air supply pipeline and water supply pipeline respectively; one end of the air inlet branch pipe 41 and the water inlet branch pipe 42 included in each spray bar 4 away from the spray rack 3 is sealedly connected to an aerosol nozzle 5 so that water vapor can be sprayed onto the casting billet (square billet or round billet) in the frame 1 in the form of mist. When producing a square billet or round billet of a certain size, each spray bar 4 can be assembled and fixed to the assembly hole 31 at the corresponding position of each spray rack 3. For example, in this embodiment, each pair of the spray racks 3 is provided with 6 groups of assembly holes 31 along its length direction, and the 6 groups of assembly holes 31 correspond to the assembly positions of each spray bar 4 for spray cooling operations of a round billet with a radius of 450 mm, a square billet with a radius of 200 mm×200 mm, a round billet with a radius of 380 mm, a round billet with a radius of 300 mm, a round billet with a radius of 210 mm, and a round billet with a radius of 180 mm from the outside to the inside. Preferably, in order to more quickly and accurately change the assembly position of the spray bar 4, each pair of the spray racks 3 in this embodiment is provided with a plurality of marks 6 for indicating the specifications of the billet, and the marks 6 are arranged one by one with the assembly holes 31. Of course, in other embodiments, the assembly holes 31 corresponding to square billets or round billets of other sizes can also be provided on each of the spray racks 3 according to actual needs. It should be understood that the aperture of each assembly hole 31 is the same so as to adapt to the position adjustment of each spray strip 4 along the length direction of the spray frame 3, so that the distance of the aerosol nozzle 5 installed at its front end relative to the central axis of the frame 1 can be adjusted to adapt to the cooling operation of square billets or round billets of different sizes.

[0036] See also Figure 3 and Figure 4 Specifically, in this embodiment, the extension line of the axis of each aerosol nozzle 5 passes through the center of the square billet / round billet, and the distances from each aerosol nozzle 5 to the central axis of the square billet / round billet are equal. In this way, the atomized water sprayed from the aerosol nozzle 5 ensures that the cooling intensity of each cross section of the square billet or round billet along the casting direction and perpendicular to the casting direction during the casting process is the same, thereby avoiding the generation of cracks.

[0037] Please continue reading Figure 1 , Figure 3 as well as Figure 4 Specifically, in this embodiment, the angles formed by the axes of two adjacent pairs of the spray racks 3 on the same layer are both 45°. Furthermore, in the height direction perpendicular to the frame 1, the two adjacent layers of the spray racks 3 are also staggered by 45°, so that after the spray strips 4 are installed thereon accordingly, the ingots in the frame 1 can be spray-cooled in an overall spiral manner.

[0038] The utility model also provides a continuous casting machine, comprising the common movable section for square and round billets used in the continuous casting machine as described above. The structure of the common movable section for square and round billets used in the continuous casting machine is the same as that described above and will not be described in detail herein.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not limited to the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any changes, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A common movable section for square and round billets of a continuous casting machine, characterized in that: include: frame; A roller assembly, the roller assembly is used to pull and guide the flexible dummy rod, and comprises an upper roller and a lower roller protruding inwardly from the inner peripheral wall of the frame; A spray rack, wherein a plurality of the spray racks are distributed in parallel along the height direction of the frame; in a direction perpendicular to the height direction of the frame, two adjacent layers of the spray racks are staggered, and the two spray racks on the upper layer adjacent to each roller in the height direction of the frame are respectively located on both sides of the roller in the circumferential direction; each of the spray racks is provided with a plurality of assembly holes for installing spray strips along its length direction.

2. The common movable section for square and round billets used in a continuous casting machine according to claim 1, characterized in that: The frame and the spray rack are formed by integrally splicing square tubes.

3. The common movable section for square and round billets used in a continuous casting machine according to claim 1, characterized in that: The spray racks of each layer are arranged in pairs at equal intervals along the circumference of the frame to install the spray strips.

4. The common movable section for square and round billets used in a continuous casting machine according to claim 3, characterized in that: One end of the air inlet branch pipe and the water inlet branch pipe included in each of the spray strips is correspondingly connected to a pair of the spray racks; One end of the air inlet branch pipe and the water inlet branch pipe included in each spray bar away from the spray frame is sealed and connected to an aerosol nozzle.

5. The common movable section for square and round billets used in a continuous casting machine according to claim 4, characterized in that: An extension line of the axis of each aerosol nozzle passes through the center of the square billet / round billet, and the distances from each aerosol nozzle to the center axis of the square billet / round billet are equal.

6. The common movable section for square and round billets used in a continuous casting machine according to claim 3, characterized in that: The angles formed by the axes of two adjacent pairs of spray racks on the same layer are both 45°.

7. The common movable section for square and round billets used in a continuous casting machine according to claim 1, characterized in that: In the height direction perpendicular to the frame, two adjacent layers of the spray racks are staggered by 45 degrees.

8. The common movable section for square and round billets used in a continuous casting machine according to claim 1, characterized in that: Each pair of the spray racks is provided with a plurality of marks for indicating the specifications of the blanks, and the marks are arranged in a one-to-one correspondence with the assembly holes.

9. A continuous casting machine, characterized in that: It comprises a common movable section for square and round billets used in a continuous casting machine as described in any one of claims 1 to 8.

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