Continuous casting secondary cooling spraying device

Abstract

The utility model discloses a continuous casting secondary cooling spraying device, which belongs to the field of ferrous metallurgy steelmaking and comprises a spraying frame, the spraying frame is of a polygonal frame structure, and the spraying frame comprises polygonal connecting frames arranged at two ends. Each vertex of the polygonal connecting frame extends into the polygonal connecting frame and is provided with a sliding chute; the spraying frame further comprises side edges connected between the opposite vertexes of the polygonal connecting frame, and T-shaped heads are arranged at the two ends of each side edge respectively. An infrared distance meter is further arranged on the side edge; a water supply pipe is fixedly arranged at one end of the side edge, and a hydraulic cylinder is fixedly connected to the water supply pipe so as to adjust the distance between the side edge and a casting blank; nozzles are uniformly arranged on each side edge in the direction of the central axis of the spraying frame; through the structural design of the device, the casting blank is uniformly cooled, the quality and the production efficiency of the casting blank are improved, and meanwhile, the device is simple and convenient to operate, safe and reliable.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel metallurgy steelmaking, and particularly relates to a continuous casting secondary cooling spray device. Background Art

[0002] In the field of steel metallurgy steelmaking, continuous casting secondary cooling refers to the process of forcibly and uniformly cooling the billet in the length range from the outlet of the mold to the straightener during the continuous casting steelmaking process. The purpose is to completely solidify the billet in a short time to improve the production capacity of the caster and the quality of the billet. The main function of secondary cooling is to forcibly and uniformly cool the surface of the billet to control the surface temperature of the billet within the required range and with the smallest fluctuation, so as to obtain good internal and external qualities of the billet. To ensure the cooling effect, it is required that the cooling system has sufficient cooling intensity and uniformity and can be adjusted appropriately.

[0003] The cooling effect is affected by various factors such as the spraying intensity, the surface temperature of the billet, the thickness of the scale, the cooling water temperature, and the water droplet movement speed. Generally, in the secondary cooling zone, a structure with cooling pipes inserted on the water supply base is adopted, and multiple nozzles are evenly distributed on the cooling pipes to spray the secondary cooling zone; however, when the billet passes through the secondary cooling zone, due to solidification shrinkage and straightening operation, the billet will deviate from the center, especially for billets with a larger cross-section, resulting in uneven spray cooling and affecting the quality of the billet. Summary of the Utility Model

[0004] Aiming at the problems existing in the prior art, the utility model provides a continuous casting secondary cooling spray device.

[0005] The utility model is realized as follows: A continuous casting secondary cooling spray device includes a spray frame, the spray frame is set as a polyhedron frame structure, and the billet moves into the spray frame from one end and then moves out from the other end;

[0006] The spray frame includes polygonal connection frames arranged at both ends, and chutes are extended from each vertex of the polygonal connection frame towards the inside of the polygonal connection frame, and the chutes are set as T-shaped grooves;

[0007] The spray frame further includes side ribs connected between the opposite vertices of the polygonal connection frames, T-shaped heads are respectively arranged at both ends of the side ribs, and the T-shaped heads can move along the chutes;

[0008] An infrared rangefinder is further arranged on the side ribs;

[0009] One end of the side rib is fixedly provided with a water supply pipe, a hydraulic cylinder is fixedly connected to the water supply pipe, the hydraulic cylinder drives the water supply pipe to move, and further drives the side rib to reciprocate along the chute to adjust the distance between the side rib and the billet;

[0010] Each of the side ridges is uniformly provided with nozzles in the direction of the central axis of the spray rack.

[0011] Furthermore, the side ridges are made of cooling pipes.

[0012] Furthermore, the polygonal connection frame is set as a square.

[0013] Furthermore, an 8-shaped fixing ring is sleeved on the water supply pipe, and the other end of the fixing ring is fixedly sleeved on the telescopic end of the hydraulic cylinder.

[0014] The advantages and technical effects of the present utility model are as follows:

[0015] During continuous casting and steel drawing, especially for large cross-section slab billets, when the position of the billet deviates from the center and causes different distances from the nozzles, the distance between the cooling pipes can be adjusted online, which is beneficial to the uniform cooling of the billet, ensures the uniform and symmetrical structure of the billet, and improves the internal quality of the billet. In addition, when smelting billets with different cross-sections, in the past, it was necessary to replace spray devices with different sizes, while the present utility model only needs to adjust the distance between the cooling pipes according to requirements, saving the replacement time and improving the work efficiency.

[0016] The present device also has the following advantages:

[0017] 1. Strong adaptability: Through the sliding adjustment of the side ridges, the device can adapt to billets of different sizes, improving the versatility and flexibility of the equipment.

[0018] 2. Uniform cooling: The uniformly distributed nozzles and the moving adjustment of the side ridges ensure the uniform cooling effect on the surface of the billet, which is beneficial to improving the surface quality and internal quality of the billet.

[0019] 3. Simple operation: The combined use of the infrared rangefinder and the hydraulic cylinder makes the adjustment of the distance between the side ridges and the billet more simple and accurate, improving the operation efficiency and safety.

[0020] 4. Stable structure: The design of the polyhedron frame structure and the T-shaped groove and chute makes the overall structure of the spray rack stable, capable of withstanding large water flow impacts and vibrations during the movement of the billet. Description of the Drawings

[0021] Figure 1 is the overall structure schematic diagram provided by the embodiment of the present utility model;

[0022] Figure 2 is the partial structure schematic diagram of the chute and the T-shaped head provided by the embodiment of the present utility model;

[0023] Figure 3 is the structure schematic diagram of the fixing ring provided by the embodiment of the present utility model.

[0024] In the figure: 1. Spraying rack; 2. Fixed ring; 3. Nozzle; 4. Chute; 5. Water supply pipe; 6. Hydraulic cylinder; 7. Infrared rangefinder; 8. Polygonal connecting frame; 9. T-shaped head; 10. Side rib. Specific implementation manner

[0025] In order to make the purpose, technical solution and advantages of the present utility model clearer, the following further details the present utility model in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] Refer to Figures 1 to 3 , a secondary cooling spraying device for continuous casting, including a spraying rack 1. In the embodiment of the present utility model, the spraying rack 1 is set as a quadrilateral frame structure. During the cooling process, the continuous casting billet is moved into one end of the spraying rack 1 and then moved out from the other end.

[0027] The spraying rack 1 includes polygonal connecting frames 8 arranged at both ends. At each vertex of the polygonal connecting frame 8, a chute 4 extends into the interior of the polygonal connecting frame 8. The chute 4 is welded to the polygonal connecting frame 8, and the chute 4 is set as a T-shaped groove; the spraying rack 1 further includes side ribs 10 movably connected between the opposite vertices of the polygonal connecting frame 8. T-shaped heads 9 are respectively arranged at both ends of the side rib 10, and the T-shaped heads 9 can move along the chute 4.

[0028] An infrared rangefinder 7 is installed on the side rib 10. The infrared rangefinder 7 is used to sense the distance between the side rib 10 and the continuous casting billet and transmit the distance signal to the control center.

[0029] One end of the side rib 10 is connected to a water supply pipe 5 through a quick connector. The water supply pipe 5 supplies cooling water into the side rib 10; a hydraulic cylinder 6 is fixedly connected to the water supply pipe 5. The hydraulic cylinder 6 can drive the water supply pipe 5 to move. When the control center receives the distance signal and when the calculated distance is off-center, the corresponding hydraulic cylinder 6 is activated, thereby driving the side rib 10 to move along the chute 4 to adjust the distance between the side rib 10 and the continuous casting billet.

[0030] An 8-shaped fixed ring 2 is sleeved on the water supply pipe 5. After one of the rings of the fixed ring 2 is sleeved on the water supply pipe 5, it is locked to the water supply pipe 5 with bolts; the other ring of the fixed ring is sleeved on the telescopic end of the hydraulic cylinder 6 and then locked to the telescopic end of the hydraulic cylinder 6 with bolts.

[0031] The side rib 10 is made of a cooling pipe. Each side rib 10 is uniformly provided with nozzles 3 in the direction of the central axis of the spraying rack 1. The number of nozzles 3 is set according to the cooling requirement.

[0032] When secondary cooling is performed on the continuous casting billet, after the continuous casting billet enters the spray rack 1 of the spray device, if the distances between the side edges 10 and the continuous casting billet are different, it will affect the cooling effect of the continuous casting billet; the infrared distance measuring instrument 7 is provided to sense the distances between the respective side edges 10 and the continuous casting billet, and the infrared distance measuring instrument 7 transmits the distance data to the control center. When the distances are different, the control center will control the hydraulic cylinder to adjust the side edges 10 that are relatively far or close to move towards or away from the continuous casting billet; after the distance adjustment is completed, the water supply system is then turned on, and the cooling water enters the nozzle 3 through the side edges 10 made of cooling pipes and then sprays onto the surface of the continuous casting billet to cool the continuous casting billet.

[0033] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A continuous casting secondary cooling spray device, comprising a spray frame (1), characterized in that: The spray rack (1) is configured as a polygonal frame structure, and during secondary cooling, the casting is moved into the spray rack (1) from one end and then out from the other end; The spray rack (1) comprises a polygonal connecting frame (8) arranged at both ends, and a slide groove (4) is arranged at each vertex of the polygonal connecting frame (8) and extends into the interior of the polygonal connecting frame (8), and the slide groove (4) is arranged as a T-shaped groove; The spray rack (1) further comprises side ribs (10) connected between the opposite vertices of the polygonal connecting frame (8), and T-shaped heads (9) are respectively provided at both ends of the side ribs (10), and the T-shaped heads (9) can move along the slide groove (4); The side ribs (10) are also provided with infrared rangefinders (7); A water supply pipe (5) is fixedly provided at one end of the side rib (10), and a hydraulic cylinder (6) is fixedly connected to the water supply pipe (5). The hydraulic cylinder (6) drives the water supply pipe (5) to move, thereby driving the side rib (10) to move back and forth along the chute (4) to adjust the distance between the side rib (10) and the casting; Each of the side ribs (10) is evenly provided with nozzles (3) in the direction of the central axis of the spray frame (1).

2. The continuous casting secondary cooling spray device according to claim 1, characterized in that: The side ribs (10) are made of cooling pipes.

3. The continuous casting secondary cooling spray device according to claim 2, characterized in that: The polygonal connecting frame (8) is configured as a square.

4. The continuous casting secondary cooling spray device according to claim 1, characterized in that: An 8-shaped fixing ring (2) is sleeved on the water supply pipe (5), and the other end of the fixing ring (2) is fixedly sleeved on the telescopic end of the hydraulic cylinder (6).

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