Tundish nozzle cooling structure capable of enhancing heat dissipation performance
By designing structures such as spiral holes, inlet pipes, outlet pipes, and regulating pipes in the tundish nozzle, the water flow rate is enhanced, solving the problem of insufficient heat dissipation at the tundish nozzle, achieving efficient heat dissipation, and ensuring production safety and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-03-13
AI Technical Summary
The tundish nozzle cannot effectively dissipate heat in high-temperature environments, leading to material damage, decreased mechanical properties, increased risk of failure, and impact on production safety and efficiency.
A cooling structure for the intermediate ladle nozzle was designed, including a spiral hole, an inlet pipe, an outlet pipe, a regulating pipe, and a guide pipe. By cooperating with the contraction band and inner ring of the regulating pipe, the water flow rate and heat dissipation efficiency are enhanced, and the heat is absorbed by the rapidly flowing water.
It effectively improves the heat dissipation efficiency of the tundish nozzle, ensures stable operation in high-temperature environments, reduces malfunctions, and guarantees the smooth progress and quality of continuous casting production.
Smart Images
Figure CN223989069U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of tundish nozzle technology, specifically relating to a tundish nozzle cooling structure that enhances heat dissipation performance. Background Technology
[0002] In modern continuous casting processes for steel production, the tundish nozzle plays a crucial role as a key component connecting the tundish and the crystallizer. It must not only ensure that molten steel is precisely injected into the crystallizer at a predetermined flow rate and volume, but also maintain stable performance under high temperature, high pressure, and complex operating conditions.
[0003] However, in actual use, heat dissipation has become a key challenge restricting the efficient operation and service life of tundish nozzles. When tundish nozzles cannot effectively dissipate heat, drawbacks arise. Sustained high temperatures severely damage the nozzle material. Prolonged exposure to high temperatures compromises the internal structural stability of the nozzle and reduces its mechanical properties, such as strength and toughness, significantly increasing the risk of deformation and cracking. Such damage not only leads to molten steel leakage and production interruption but also poses a threat to the safety of surrounding equipment and operators. Utility Model Content
[0004] The purpose of this invention is to provide a cooling structure for the tundish nozzle that enhances heat dissipation performance, aiming to solve the problems that arise when the tundish nozzle cannot effectively dissipate heat. Sustained high temperatures can severely damage the nozzle material. When the nozzle is exposed to high temperatures for extended periods, its internal structural stability is compromised, and the mechanical properties of the material decrease, such as reduced strength and toughness. This significantly increases the risk of nozzle deformation, cracking, and other malfunctions. Such damage to the nozzle can not only lead to molten steel leakage and production interruption but also pose a threat to the safety of surrounding equipment and operators.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a cooling structure for an intermediate tundish nozzle that enhances heat dissipation performance, comprising an intermediate tundish nozzle, wherein a flow channel is provided through the center end of the intermediate tundish nozzle, and a spiral hole is provided from top to bottom inside the intermediate tundish nozzle surrounding the flow channel, and an inlet pipe is connected to the upper end of the spiral hole.
[0006] The lower end of the spiral hole is connected to a water outlet pipe, and the other end of the water inlet pipe is connected to a regulating pipe. The connection ends of the water inlet pipe and the water outlet pipe with the spiral hole are both located inside the intermediate water inlet. A shrinkage strip is wrapped around the surface of the regulating pipe.
[0007] In order to prevent displacement at the center end of the regulating tube when the shrink band contracts, as a cooling structure for the intermediate liner nozzle to enhance heat dissipation performance according to this utility model, preferably, a limiting groove is formed on the outer wall of the center end of the regulating tube, and a shrink band is wound around the outer wall of the limiting groove, wherein the inner wall width of the limiting groove is greater than the width of the shrink band.
[0008] In order to enable the regulating pipe to shrink and drive the guide pipe to shrink, thereby reducing the inner diameter of the guide pipe's center end, the resistance of the flowing water increases, and thus increases the flow velocity of the water to the other side. As a cooling structure for the intermediate liner nozzle that enhances heat dissipation performance, the regulating pipe is preferably installed in the inner cavity of the regulating pipe, and the left and right ends of the guide pipe are respectively sealed and glued to the openings at the left and right ends of the regulating pipe.
[0009] An inner ring is fitted onto the outer wall of the center end of the guide tube. The outer wall of the inner ring is fixedly connected to the inner wall of the regulating tube. The guide tube is funnel-shaped, and the through hole inside the guide tube is also funnel-shaped. The inner diameter of the funnel-shaped through hole of the guide tube gradually increases from left to right. The guide tube, inner ring, and regulating tube are all made of deformable rubber material. The inner wall of the inner ring is adapted to the shape and size of the outer wall of the center end of the guide tube.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] In practical applications, first connect the regulating pipe of the tundish inlet to the water supply source, and simultaneously connect the outlet pipe to the drain outlet. When the tundish inlet urgently needs to dissipate heat due to excessively high temperature, operate the shrinkage belt to tighten it. During the tightening process, the shrinkage belt applies pressure to the regulating pipe, causing it to shrink and deform. The shrinkage of the regulating pipe, in turn, causes its inner ring to shrink synchronously. When the inner ring shrinks, it squeezes the central area of the guide pipe, making the inner diameter of the central area of the guide pipe smaller.
[0012] When the water flow rate, water pressure, and other related factors of the water supply remain constant, the cross-sectional area of the constriction zone of the guide pipe decreases. As the pressure increases, the water flow velocity also increases when it flows to the other side. The accelerated water flow entering the spiral orifice significantly increases the flow velocity of the water source within the spiral orifice. The rapidly flowing water source can more efficiently absorb the heat emitted by the tundish inlet and quickly carry it away, thereby effectively improving the heat dissipation efficiency of the tundish inlet. Attached Figure Description
[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0014] Figure 1This is a schematic diagram of the main view structure provided for an embodiment of this application.
[0015] Figure 2 This is a schematic diagram of the side cross-sectional structure of the tundish nozzle provided in an embodiment of this application.
[0016] Figure 3 This is a side view cross-sectional structural diagram of the regulating pipe provided in an embodiment of this application.
[0017] Figure 4 This is a schematic diagram of the flow guide tube and inner ring connection structure provided in an embodiment of this application.
[0018] In the diagram: 1. Inlet; 2. Flow channel; 3. Spiral hole; 4. Inlet pipe; 5. Outlet pipe; 6. Regulating pipe; 61. Limiting groove; 62. Guide pipe; 63. Inner ring; 7. Shrinkage zone. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Please see Figure 1-4 The present invention provides the following technical solution: a cooling structure for an intermediate ladle nozzle that enhances heat dissipation performance, including an intermediate ladle nozzle 1, a flow channel 2 is provided through the center end of the intermediate ladle nozzle 1, a spiral hole 3 is provided from top to bottom inside the intermediate ladle nozzle 1 around the flow channel 2, and a water inlet pipe 4 is connected to the upper end of the spiral hole 3.
[0021] The lower end of the spiral hole 3 is connected to the water outlet pipe 5, and the other end of the water inlet pipe 4 is connected to the regulating pipe 6. The connection ends of the water inlet pipe 4 and the water outlet pipe 5 with the spiral hole 3 are both located inside the intermediate water inlet 1. A shrinkage strip 7 is wrapped around the surface of the regulating pipe 6.
[0022] Preferably, a limiting groove 61 is formed on the outer wall of the center end of the regulating tube 6, and a shrinkage band 7 is wrapped around the outer wall of the limiting groove 61. The width of the inner wall of the limiting groove 61 is greater than the width of the shrinkage band 7.
[0023] In practical use, the two rope ends of the shrink tape 7 are fitted with fastening buckles. After the shrink tape 7 is tightened, the two rope ends can be fixed by the fastening buckles on the shrink tape 7. In this way, the shrink tape 7 can effectively squeeze and deform the regulating tube 6.
[0024] In addition, the shrink band 7 is located inside the limiting groove 61, so the shrink band 7 is also constrained by the limiting groove 61 when in use, thus ensuring that the position of the shrink band 7 on the adjusting tube 6 will not change.
[0025] Preferably, a guide tube 62 is installed in the inner cavity of the regulating tube 6, and the left and right ends of the guide tube 62 are respectively sealed and glued to the openings at the left and right ends of the regulating tube 6.
[0026] An inner ring 63 is fitted onto the outer wall of the center end of the guide tube 62. The outer wall of the inner ring 63 is fixedly connected to the inner wall of the regulating tube 6. The guide tube 62 is funnel-shaped, and the through hole inside the guide tube 62 is also funnel-shaped. The inner diameter of the funnel-shaped through hole of the guide tube 62 gradually increases from left to right. The guide tube 62, the inner ring 63 and the regulating tube 6 are all made of deformable rubber material. The inner wall of the inner ring 63 is adapted to the shape and size of the outer wall of the center end of the guide tube 62.
[0027] The rubber guide tube 62 can be effectively deformed to adapt to different conditions, thereby changing the inner diameter of the guide tube 62. At the same time, the strong adhesive structure at both ends of the guide tube 62 will not detach from the corresponding connection end due to the deformation tension of the guide tube 62.
[0028] In practical continuous casting production applications, firstly, the regulating pipe 6 of the tundish nozzle 1 must be connected to the water supply source. During the connection process, ensure a good seal to avoid leakage. Simultaneously, carefully check the stability of the connection to prevent loosening under water flow impact. At the same time, connect the outlet pipe 5 to the drain outlet, ensuring proper sealing around the drain outlet to guarantee a smooth and unobstructed drainage path.
[0029] As continuous casting continues, the temperature of the tundish nozzle 1 rises due to prolonged contact with molten steel, necessitating accelerated heat dissipation to maintain its normal performance. Operators must tighten the shrinkage belt 7. During tightening, the shrinkage belt 7 acts like a gradually shrinking annular clamp, applying uniform and continuous radial pressure to the regulating pipe 6. Under this pressure, the regulating pipe 6 begins to slowly shrink and deform, its wall bending inwards, and its diameter gradually decreasing.
[0030] The contraction of the regulating tube 6 causes the inner ring 63 to contract synchronously. When the inner ring 63 contracts, its inward squeezing force acts on the central region of the guide tube 62. After being squeezed by the inner ring 63, the originally uniform circular cross-section of the central region of the guide tube 62 gradually becomes smaller, and the inner diameter is significantly reduced.
[0031] Assuming constant water flow rate, water pressure, and other relevant factors, and based on the fundamental principles of fluid mechanics regarding the relationship between flow rate, velocity, and cross-sectional area, the increased pressure of the water flowing to the other side significantly enhances its kinetic energy and consequently increases its velocity. Upon entering the spiral orifice 3, the accelerated flow, due to its spiral structure, experiences a longer path and continuous changes in direction, further intensifying turbulence and significantly increasing the velocity of the water within the orifice 3. As the rapidly flowing water passes around the tundish inlet 1, it efficiently absorbs and quickly carries away the heat emitted by the inlet 1 through convective heat transfer.
[0032] Through the coordinated operation of the above structures, the heat dissipation efficiency of the tundish nozzle 1 can be effectively improved, ensuring the stable operation of the tundish nozzle 1 in a high-temperature environment, guaranteeing the smooth progress of continuous casting production, reducing production failures caused by overheating of the tundish nozzle 1, and improving the overall efficiency and quality of continuous casting production.
[0033] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A tundish nozzle cooling structure for enhancing heat dissipation performance, comprising a tundish nozzle (1), a flow channel (2) is provided through the center end of the tundish nozzle (1), characterized in that, The intermediate ladle nozzle (1) is internally provided with a spiral hole (3) from top to bottom around the flow channel (2), the upper end of the spiral hole (3) is communicated with a water inlet pipe (4); The lower end of the spiral hole (3) is communicated with a water outlet pipe (5), the other end of the water inlet pipe (4) is communicated with an adjusting pipe (6), the connecting ends of the water inlet pipe (4) and the water outlet pipe (5) with the spiral hole (3) are located in the interior of the intermediate ladle nozzle (1), the surface of the adjusting pipe (6) is wound with a shrinkable tape (7).
2. The water nozzle cooling structure of the tundish with enhanced heat dissipation performance according to claim 1, characterized in that: The outer wall of the center end of the adjusting pipe (6) is provided with a limiting groove (61), the outer wall of the limiting groove (61) is wound with a shrinkable tape (7).
3. The water nozzle cooling structure of the tundish with enhanced heat dissipation performance according to claim 2, characterized in that: The inner wall width of the limiting groove (61) is greater than the width of the shrinkable tape (7).
4. The water nozzle cooling structure of the tundish with enhanced heat dissipation performance according to claim 1, characterized in that: The inner cavity of the adjusting pipe (6) is mounted with a flow guide pipe (62), the left and right ends of the flow guide pipe (62) are respectively sealedly glued with the openings of the left and right ends of the adjusting pipe (6).
5. The water nozzle cooling structure of the tundish for enhancing heat dissipation performance according to claim 4, characterized in that: The outer wall of the center end of the flow guide pipe (62) is sleeved with an inner ring (63), the outer wall of the inner ring (63) is fixedly connected on the inner wall of the adjusting pipe (6).
6. The water nozzle cooling structure of the tundish for enhancing heat dissipation performance according to claim 4, characterized in that: The flow guide pipe (62) is funnel-shaped, the through hole in the flow guide pipe (62) is also funnel-shaped, and the inner diameter of the funnel-shaped through hole of the flow guide pipe (62) gradually increases from left to right.
7. The water nozzle cooling structure of the tundish for enhancing heat dissipation performance according to claim 4 or 5, characterized in that: The flow guide pipe (62), the inner ring (63) and the adjusting pipe (6) are made of deformable rubber material, the shape and size of the inner wall of the inner ring (63) and the outer wall of the center end of the flow guide pipe (62) are matched.