Continuous casting machine roller way auxiliary cooling device suitable for high-performance vanadium-containing molten steel

Abstract

The utility model provides a continuous casting machine roller way auxiliary cooling device suitable for high-performance vanadium-containing molten steel, which comprises a water feeding ring, a plurality of spray pipes and a spray head, the water feeding ring is arranged in the conveying direction of a middle shaft conveying roller way, the water feeding ring is used for surrounding the periphery of a casting blank, the spray pipes are arranged in the conveying direction of the conveying roller way, and the spray head is arranged in the middle shaft conveying roller way. A plurality of spray heads are arranged on the peripheral wall of each spray pipe and are arranged at intervals in the axial direction of the spray pipe. The continuous casting machine roller way auxiliary cooling device suitable for the high-performance vanadium-containing molten steel is arranged between a flame cutting machine and a conveying pipeline, cooling water is supplied into the spraying pipe through the water supply ring, the cooling water is sprayed to a casting blank through the spraying heads, the multiple spraying heads are arranged, the cooling water is sprayed to the casting blank from the upper direction, the lower direction, the left direction and the right direction, and the cooling efficiency is improved. And uniform cooling of the casting blank is achieved, the casting blank is effectively cooled, the casting blank meets the temperature requirement in the follow-up rolling process, and the rolling quality of the casting blank is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of continuous casting machine structures, and more specifically relates to a roller table auxiliary cooling device of a continuous casting machine suitable for high-performance vanadium-containing molten steel. Background Art

[0002] Continuous casting machines are used to produce cross-section ingots for use in H-beam production lines. The continuous rolling process for steel sections places special demands on the temperature of the ingots when hot-feeding them into the furnace when producing low-alloy steel. When the temperature is between 650-800°C, the rolled product will suffer from edge cracking and become wasteful.

[0003] To address the issue of hot-feeding furnace temperatures, the billets are typically cooled naturally for a certain period of time, until their temperature drops below 600°C, meeting the standard for hot-feeding low-alloy steel. This natural cooling method prolongs the waiting time, significantly impacting production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a continuous casting machine roller auxiliary cooling device suitable for high-performance vanadium-containing molten steel, which can cool the cast billet in time and improve the processing efficiency of the cast billet.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a continuous casting machine roller auxiliary cooling device suitable for high-performance vanadium-containing molten steel, including a water supply ring, a spray pipe and a nozzle. The water supply ring is arranged between the fire cutting machine and the conveying roller. The water supply ring is arranged along the conveying direction of the conveying roller and the water supply ring is used to be connected to the water supply pipe. The water supply ring is used to be arranged around the outer periphery of the ingot. The spray pipe is arranged along the conveying direction of the conveying roller. There are several spray pipes arranged at intervals along the circumference of the water supply ring. Several nozzles are provided on the peripheral wall of each spray pipe. Several nozzles are arranged at intervals along the axial direction of the spray pipe for spraying cooling water onto the outer peripheral wall of the ingot to cool the ingot sent from the fire cutting machine to the conveying roller.

[0006] In one possible implementation, the water supply ring is a polygonal ring, and the spray pipe includes a main nozzle and a side nozzle. The main nozzle is located on the top and bottom edges of the water supply ring, and the side nozzle is located on both side edges of the water supply ring.

[0007] In some embodiments, two positive nozzles are arranged in parallel on the same side of the water supply ring, and the nozzle includes a positive nozzle arranged at the bottom or top of the positive nozzle, which is used to spray cooling water onto the top wall or bottom wall of the ingot.

[0008] In some embodiments, a side nozzle is provided on the same side of the water supply ring, and the nozzle also includes a side nozzle provided on the side nozzle, and the side nozzle is used to spray cooling water onto the side wall of the ingot.

[0009] In a possible implementation, the spray pipe is connected to the water supply ring, and the spray pipe extends horizontally toward a side close to the conveyor roller.

[0010] In a possible implementation, auxiliary nozzles are further provided on the inner circumference of the water supply ring. Two auxiliary nozzles are spaced apart on the upper inner circumference of the water supply ring, and two auxiliary nozzles are also spaced apart on the lower inner circumference of the water supply ring.

[0011] In one possible implementation, the continuous casting machine roller auxiliary cooling device suitable for high-performance vanadium-containing molten steel also includes a mounting frame arranged at the inlet end of the conveyor roller, the mounting frame includes a support plate and a connecting vertical plate, the support plate is supported below the water supply ring and the lower spray pipe, the connecting vertical plate is connected to the support plate and is arranged away from the conveyor roller, and the side of the water supply ring is provided with a connecting ear corresponding to the connecting vertical plate, and the connecting ear is connected to the connecting vertical plate through a connecting piece.

[0012] In one possible implementation, the feed end of the water supply ring is also provided with a support arm, which is arranged parallel to the spray pipe and is located between the top and side edges of the water supply ring or between the bottom and side edges of the water supply ring. The length of the support arm is greater than the length of the spray pipe.

[0013] In one possible implementation, the continuous casting machine roller auxiliary cooling device for high-performance vanadium-containing molten steel also includes a controller, which is used to send start and stop signals to the flame cutting machine and the conveyor roller to drive the cast billet to stop or move.

[0014] In some embodiments, the controller is also electrically connected to a proximity switch and a timer. The proximity switch is used to monitor the ingot on the conveyor roller and send a monitoring signal to the controller. The timer is used to receive timing instructions from the controller and send timing parameters to the controller.

[0015] Compared with the prior art, the solution shown in the embodiment of the present application is a continuous casting machine roller auxiliary cooling device suitable for high-performance vanadium-containing molten steel provided in the embodiment of the present application. The device is arranged between the fire cutting machine and the conveying pipeline, and cooling water is supplied to the water supply ring spray pipe, and the cooling water is sprayed onto the ingot with the help of a nozzle. There are multiple nozzles, and cooling water is sprayed on the ingot from multiple directions such as up, down, left and right to achieve uniform cooling of the ingot, effectively cool the ingot, meet the temperature requirements of the subsequent rolling process, and ensure the rolling quality of the ingot. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 A schematic diagram of the structure of the auxiliary cooling device for the continuous casting machine roller table suitable for high-performance vanadium-containing molten steel provided by the embodiment of the utility model in use;

[0018] Figure 2 For the embodiment of the utility model Figure 1 A schematic diagram of the main cross-sectional structure of a continuous casting machine roller table auxiliary cooling device suitable for high-performance vanadium-containing molten steel;

[0019] Figure 3 For the embodiment of the utility model Figure 2 A right side structural schematic diagram of an embodiment of a continuous casting machine roller table auxiliary cooling device suitable for high-performance vanadium-containing molten steel (mounting frame omitted);

[0020] Figure 4 A right side structural schematic diagram of another embodiment of the continuous casting machine roller auxiliary cooling device suitable for high-performance vanadium-containing molten steel provided by the present utility model (mounting frame omitted).

[0021] Among them, the reference numerals in the figures are:

[0022] 1. Water supply ring; 2. Spray pipe; 21. Main nozzle; 22. Side nozzle; 3. Nozzle; 31. Main nozzle; 32. Side nozzle; 33. Auxiliary nozzle; 4. Mounting frame; 41. Support plate; 42. Connecting vertical plate; 43. Connecting ear; 5. Support arm; 6. Flame cutting machine; 7. Conveyor roller; 8. Water supply pipe. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "several" means two or more, unless otherwise clearly and specifically defined.

[0025] Please also refer to Figures 1 to 4 The auxiliary cooling device for the continuous casting roller table of the utility model, which is suitable for high-performance vanadium-containing molten steel, is now described. The auxiliary cooling device for the continuous casting roller table of the utility model, which is suitable for high-performance vanadium-containing molten steel, comprises a water supply ring 1, a spray pipe 2, and a nozzle 3. The water supply ring 1 is arranged between the flame cutting machine 6 and the conveying roller 7. The water supply ring 1 is arranged along the conveying direction of the conveying roller 7 and is used to be connected to the water supply pipe 8. The water supply ring 1 is used to surround the outer periphery of the ingot. The spray pipe 2 is arranged along the conveying direction of the conveying roller 7. Several spray pipes 2 are arranged at intervals along the circumference of the water supply ring 1. Several nozzles 3 are provided on the circumferential wall of each spray pipe 2. The nozzles 3 are arranged at intervals along the axial direction of the spray pipe 2 to spray cooling water onto the outer peripheral wall of the ingot to cool the ingot sent from the flame cutting machine 6 to the conveying roller 7.

[0026] The present embodiment provides an auxiliary cooling device for the roller of a continuous casting machine suitable for high-performance vanadium-containing molten steel. Compared with the prior art, the auxiliary cooling device for the roller of a continuous casting machine suitable for high-performance vanadium-containing molten steel provided by the present embodiment is arranged between the fire cutting machine 6 and the conveying pipeline, and uses the water supply ring 1 to supply cooling water to the spray pipe 2, and uses the nozzle 3 to spray the cooling water onto the ingot. There are multiple nozzles 3, which spray cooling water on the ingot from multiple directions such as up, down, left and right to achieve uniform cooling of the ingot, effectively cool the ingot, make the ingot meet the temperature requirements in the subsequent rolling process, and ensure the rolling quality of the ingot.

[0027] In one possible implementation, see Figures 1 to 4 The water supply ring 1 is a polygonal ring, and the spray pipe 2 includes a main nozzle 21 and a side nozzle 22. The main nozzle 21 is located on the top and bottom edges of the water supply ring 1, and the side nozzle 22 is located on both sides of the water supply ring 1.

[0028] In this embodiment, the water supply ring 1 employs a polygonal ring structure, which can be a quadrilateral, pentagonal, or hexagonal structure. The number of sides of the water supply ring 1 is preferably an even number to facilitate the layout of the nozzles. Taking the quadrilateral water supply ring 1 as an example, the main nozzles 21 are installed at the top and bottom edges of the water supply ring 1, and the side nozzles 22 are installed at the sides of the water supply ring 1, enabling spray cooling of the ingot in multiple directions, including top, bottom, left, and right.

[0029] By providing multiple spray pipes 2 in the circumferential direction of the water supply ring 1, water can be supplied to different positions of the billet. Specifically, the spray pipes 2 include a front nozzle 21 and a side nozzle 22. The front nozzle 21 is used to spray cooling water onto the top or bottom surface of the billet to effectively cool the horizontal plane of the billet. The side nozzle 22 is used to spray cooling water onto the sides of the billet to effectively cool the vertical plane of the billet, so that the peripheral wall of the billet is evenly cooled, ensuring the uniformity of the subsequent billet temperature.

[0030] For some examples, see Figures 1 to 4 Two positive nozzles 21 are arranged in parallel on the same side of the water supply ring 1, and the nozzle 3 includes a positive nozzle 31 arranged at the bottom or top of the positive nozzle 21, and the positive nozzle 31 is used to spray cooling water onto the top wall or bottom wall of the casting.

[0031] In this embodiment, a plurality of positive nozzles 31 are provided on the positive nozzle 21. The plurality of positive nozzles 31 are arranged at intervals along the axial direction of the positive nozzle 21 and are arranged toward one side of the ingot. They can realize cooling effect on different areas corresponding to different positions in the length direction of the ingot, which helps to improve the cooling efficiency.

[0032] Similarly, a plurality of side nozzles 32 are provided on the side nozzle pipe 22. The plurality of side nozzles 32 are arranged at intervals along the axial direction of the main nozzle pipe 21 and are arranged toward one side of the ingot. They can realize cooling effect on different areas corresponding to different positions in the length direction of the ingot, which helps to improve the cooling efficiency.

[0033] Specifically, since the size of the ingot in the width direction is larger than that in the height direction, two main nozzles 21 are arranged in parallel on the same side of the water supply ring 1, and one side nozzle 22 is provided on the same side of the water supply ring 1, so that different positions of the outer peripheral wall of the ingot can be effectively covered by cooling water, which helps to improve the uniformity of cooling and at the same time increases the total amount of cooling water sprayed on the ingot per unit time, which helps to improve the cooling effect.

[0034] In one possible implementation, see Figures 1 to 4The spray pipe 2 is connected to the water supply ring 1 and extends horizontally toward the side near the conveyor roller 7. As the billet is fed backward from the flame cutter 6, it first passes through the water supply ring 1 and is then cooled by the front nozzle 31 and side nozzle 32. To ensure effective cooling, the billet can be passed through the water supply ring 1 and the spray pipe 2 at a low and uniform speed, allowing the cooling water to fully act on the billet surface. Furthermore, by briefly allowing the billet to remain at the water supply ring 1 for a short period of time after the start of production, effective cooling can be achieved at the corresponding position of the billet.

[0035] In one possible implementation, see Figures 1 to 4 The inner circumference of the water supply ring 1 is also provided with auxiliary nozzles 33. Two auxiliary nozzles 33 are spaced apart at the upper portion of the inner circumference of the water supply ring 1, and two auxiliary nozzles 33 are also spaced apart at the lower portion of the inner circumference of the water supply ring 1.

[0036] In this embodiment, auxiliary nozzles 33 provided on the inner periphery of the water supply ring 1 can provide auxiliary spraying for the cast billet, further improving the spraying efficiency. Two auxiliary nozzles 33 are provided, arranged in a row with the main nozzles 31 on the two main nozzle pipes 21, meeting the spray cooling requirements of the cast billet.

[0037] In one possible implementation, see Figures 1 to 4 The continuous casting machine roller auxiliary cooling device suitable for high-performance vanadium-containing molten steel also includes a mounting frame 4 arranged at the inlet end of the conveyor roller 7, the mounting frame 4 includes a supporting plate 41 and a connecting vertical plate 42, the supporting plate 41 is supported under the water supply ring 1 and the lower spray pipe 2, the connecting vertical plate 42 is connected to the supporting plate 41 and is arranged away from the conveyor roller 7, and the side of the water supply ring 1 is provided with a connecting ear 43 corresponding to the connecting vertical plate 42, and the connecting ear 43 is connected to the connecting vertical plate 42 through a connecting piece.

[0038] In this embodiment, a mounting bracket 4 is provided for ease of installation and fixation. Mounting bracket 4 is fixedly positioned between the flame cutter 6 and the conveyor roller 7. The water supply ring 1 and spray pipe 2 are removable as a whole. When the ingots on the flame cutter 6 are not made of low-alloy steel, there are no special requirements for the ingot's hot entry temperature. In this case, the water supply ring 1 and spray pipe 2 can be disassembled and set aside, simplifying the structure and facilitating orderly conveyance of the ingots.

[0039] Specifically, the feed end of the water supply ring 1 is also equipped with a support arm 5. This support arm 5 is arranged parallel to the spray pipe 2 and is located between the top and side edges of the water supply ring 1 or between the bottom and side edges of the water supply ring 1. The length of the support arm 5 is greater than the length of the spray pipe 2. After the water supply ring 1 and the spray pipe 2 are completely disassembled, the support arm 5 can be used for support. At this time, the water supply ring 1 needs to be rotated 90° so that its main axis is in the vertical direction. The support of the support arm 5 can prevent the spray pipe 2 from being squeezed and damaged, facilitating subsequent installation and use.

[0040] In one possible implementation, the continuous casting machine roller auxiliary cooling device suitable for high-performance vanadium-containing molten steel also includes a controller, which is used to send start and stop signals to the flame cutter 6 and the conveyor roller 7 to drive the cast billet to stop or move.

[0041] In this embodiment, a controller is used to control the operation of the conveyor rollers 7 and the flame cutter 6. After the billet is conveyed into the water supply ring 1, the controller sends a stop command to the conveyor rollers 7 and the flame cutter 6, causing them to remain stopped. At this time, the billet can be stably positioned in this position and is fully cooled by the front nozzles 31 and side nozzles 32 until it meets the subsequent rolling requirements. The controller then sends a start command to the conveyor rollers 7 and the flame cutter 6, causing the billet to be conveyed backward in an orderly manner.

[0042] On the basis of the above structure, the controller is also electrically connected to a proximity switch and a timer. The proximity switch is used to monitor the billet on the conveyor roller 7 and send a monitoring signal to the controller. The timer is used to receive the timing instruction of the controller and send the timing parameters to the controller. By setting the proximity switch, it is possible to detect whether the billet has reached the water supply pipe position. When the billet reaches this position, the proximity switch sends a monitoring signal to the controller. The controller analyzes according to the preset program and sends a stop instruction to the fire cutter 6 and the conveyor roller 7, and sends a timing instruction to the timer. At this time, the billet stops running, and the front nozzle 31 and the side nozzle 32 spray cooling water on the billet. After the timer counts to the preset time, it sends timing information to the controller. The controller determines that the cooling time has been met according to the preset program. After that, the controller sends a start instruction to the fire cutter 6 and the conveyor roller 7. The billet continues to be transported backward, meeting the cooling needs of the billet.

[0043] The above are only 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 principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A roller table auxiliary cooling device for continuous casting machine suitable for high-performance vanadium-containing molten steel, characterized in that: The invention comprises a water supply ring (1), a spray pipe (2) and a nozzle (3), wherein the water supply ring (1) is arranged between the fire cutting machine (6) and the conveying roller (7), the water supply ring (1) is arranged along the conveying direction of the conveying roller (7), and the water supply ring (1) is used to be connected with a water supply pipe (8), the water supply ring (1) is used to be arranged around the outer periphery of the ingot, the spray pipe (2) is arranged along the conveying direction of the conveying roller (7), a plurality of the spray pipes (2) are arranged at intervals along the circumference of the water supply ring (1), a plurality of nozzles (3) are arranged on the peripheral wall of each of the spray pipes (2), and a plurality of the nozzles (3) are arranged at intervals along the axial direction of the spray pipe (2) for spraying cooling water onto the outer peripheral wall of the ingot to cool the ingot sent from the fire cutting machine (6) to the conveying roller (7).

2. The auxiliary cooling device for continuous casting rollers suitable for high-performance vanadium-containing molten steel according to claim 1, characterized in that: The water supply ring (1) is a polygonal ring, and the spray pipe (2) includes a main nozzle (21) and a side nozzle (22). The main nozzle (21) is located on the top and bottom edges of the water supply ring (1), and the side nozzle (22) is located on both side edges of the water supply ring (1).

3. The auxiliary cooling device for continuous casting rollers suitable for high-performance vanadium-containing molten steel according to claim 2, characterized in that: Two positive nozzles (21) are arranged in parallel on the same side of the water supply ring (1), and the nozzle (3) includes a positive nozzle (31) arranged at the bottom or top of the positive nozzle (21), and the positive nozzle (31) is used to spray cooling water onto the top wall or bottom wall of the casting.

4. The auxiliary cooling device for continuous casting rollers suitable for high-performance vanadium-containing molten steel according to claim 3, characterized in that: The side nozzle (22) is provided on the same side of the water supply ring (1), and the nozzle (3) also includes a side nozzle (32) provided on the side nozzle (22), and the side nozzle (32) is used to spray cooling water onto the side wall of the casting.

5. The auxiliary cooling device for continuous casting rollers suitable for high-performance vanadium-containing molten steel according to claim 1, characterized in that: The spray pipe (2) is connected to the water supply ring (1), and the spray pipe (2) extends horizontally toward a side close to the conveying roller (7).

6. The auxiliary cooling device for continuous casting rollers suitable for high-performance vanadium-containing molten steel according to claim 1, characterized in that: Auxiliary nozzles (33) are also provided on the inner periphery of the water supply ring (1). Two auxiliary nozzles (33) are provided at intervals on the upper portion of the inner periphery of the water supply ring (1), and two auxiliary nozzles (33) are also provided at intervals on the lower portion of the inner periphery of the water supply ring (1).

7. The auxiliary cooling device for continuous casting rollers suitable for high-performance vanadium-containing molten steel according to claim 1, characterized in that: The continuous casting machine roller auxiliary cooling device suitable for high-performance vanadium-containing molten steel also includes a mounting frame (4) arranged at the inlet end of the conveyor roller (7), the mounting frame (4) includes a supporting plate (41) and a connecting vertical plate (42), the supporting plate (41) is supported below the water supply ring (1) and the lower spray pipe (2), the connecting vertical plate (42) is connected to the supporting plate (41) and is arranged away from the conveyor roller (7), the side of the water supply ring (1) is provided with a connecting ear (43) corresponding to the connecting vertical plate (42), and the connecting ear (43) is connected to the connecting vertical plate (42) through a connecting piece.

8. The auxiliary cooling device for continuous casting rollers suitable for high-performance vanadium-containing molten steel according to claim 7, characterized in that: The feed end of the water supply ring (1) is further provided with a support arm (5), the support arm (5) being arranged parallel to the spray pipe (2) and being located between the top and side edges of the water supply ring (1) or between the bottom and side edges of the water supply ring (1), and the length of the support arm (5) being greater than the length of the spray pipe (2).

9. The auxiliary cooling device for continuous casting rollers suitable for high-performance vanadium-containing molten steel according to any one of claims 1 to 8, characterized in that: The continuous casting machine roller auxiliary cooling device suitable for high-performance vanadium-containing molten steel also includes a controller, which is used to send start and stop signals to the fire cutting machine (6) and the conveying roller (7) to drive the cast billet to stop or drive the cast billet to move.

10. The auxiliary cooling device for continuous casting rollers suitable for high-performance vanadium-containing molten steel according to claim 9, characterized in that: The controller is also electrically connected to a proximity switch and a timer, wherein the proximity switch is used to monitor the ingot on the conveyor roller (7) and send a monitoring signal to the controller, and the timer is used to receive a timing instruction from the controller and send a timing parameter to the controller.

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