High-efficiency cooling device for hot-rolling seamless steel pipe rolling mill

Abstract

The utility model relates to the field of seamless steel pipe processing technology discloses a kind of high-efficiency cooling device for hot-rolled seamless steel pipe rolling mill, including machine body, the side fixed connection of machine body has support frame, cooling assembly is arranged in the top of support frame, the cooling assembly includes cooling frame, the cooling frame sliding connection is in the top of support frame, the water pump is fixedly connected in the top of cooling frame, the water pump output end is fixedly connected with drainage tube, the inside fixed connection of drainage tube has multiple connecting pipes, multiple the connecting pipe one end is fixedly connected with shower head. In the utility model, the outer wall residual impurities can be scraped after cooling by scraper, thereby realizing the effect of efficient cooling and scraping outer wall residual impurities, solving the problem that existing cooling device exists after cooling steel pipe surface oxide skin, cooling medium crystalline and uneven liquid film, leading to poor surface quality, subsequent processing precision is low, high scrap rate, improve steel pipe surface quality, processing precision and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of seamless steel pipe processing technology, and in particular to a high-efficiency cooling device for hot-rolled seamless steel pipe mills. Background Technology

[0002] In modern industrial production, hot-rolled seamless steel pipes are widely used in key fields such as petrochemicals, energy and power, and machinery manufacturing. Their product quality directly affects the safety and performance of downstream equipment. During the hot rolling process, the high-temperature steel pipes require rapid and uniform cooling through a cooling device to regulate their microstructure and mechanical properties, achieving the transformation from austenite to target phases such as pearlite and martensite. For example, in manufacturing high-strength pipeline steel, the cooling rate must be precisely controlled between 50-150℃ / s to obtain ideal strength and toughness. As the industry's requirements for the precision and performance of steel pipes continue to increase, the shortcomings of traditional cooling devices in terms of cooling efficiency, uniformity, and equipment adaptability are becoming increasingly apparent, necessitating breakthroughs through technological innovation.

[0003] Currently, commonly used cooling devices for hot-rolled seamless steel pipe mills mainly include annular pipe spray cooling devices, online control cooling systems, and aerosol cooling devices. Annular pipe spray cooling devices cool the steel pipe by arranging annular pipes within an arc-shaped groove on a support platform and using main spray holes on the inner side of the annular pipes. The principle is to remove heat from the steel pipe through the convection of cooling water. Online control cooling systems rely on temperature sensors to monitor the steel pipe temperature in real time and, combined with an automated control system, adjust the flow rate, pressure, and spray angle of the cooling medium to achieve precise cooling control. Aerosol cooling devices mix compressed air and water to form micron-sized water mist, utilizing the latent heat of vaporization of the water mist to improve cooling efficiency. While these devices can meet basic cooling requirements, there is still room for optimization in their structural design and functional implementation.

[0004] Existing cooling devices often face the problem of poor steel pipe surface condition after the cooling process, affecting subsequent processing and performance. The cooled steel pipe surface, due to oxide scale generated during high-temperature cooling, crystals formed by residual cooling medium, and uneven liquid film formed during cooling, poses numerous hidden dangers and increases surface roughness, affecting precision during subsequent deep processing. If residual cooling medium crystals are not removed promptly, they will form localized corrosion spots on the steel pipe surface, and uneven liquid film residue will accelerate corrosion in high-humidity environments. This severely impacts production efficiency and product quality, making it difficult to meet the high-precision and high-performance requirements of high-pressure pipelines and precision machinery. Therefore, a high-efficiency cooling device for hot-rolled seamless steel pipe mills is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a high-efficiency cooling device for hot-rolled seamless steel pipe mills. It aims to improve the problem that after the existing cooling devices for hot-rolled seamless steel pipe mills have completed cooling, there are oxide scale, cooling medium crystals and uneven liquid films on the surface of the steel pipe, which leads to increased surface roughness, easy corrosion, and affects the accuracy of subsequent processing and product quality.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A high-efficiency cooling device for a hot-rolled seamless steel pipe mill includes a machine body, a support frame fixedly connected to one side of the machine body, and a cooling component provided on the top of the support frame; The cooling assembly includes a cooling rack slidably connected to the top of the support frame. A water pump is fixedly connected to the top of the cooling rack, and a drain pipe is fixedly connected to the output end of the water pump. Multiple connecting pipes are fixedly connected inside the drain pipe, and a nozzle is fixedly connected to one end of each of the multiple connecting pipes. Symmetrical support rods are fixedly connected inside the cooling rack. A spring is provided on one side of each of the two support rods. One end of the spring is fixedly connected to the side wall of the support rod, and the other end is fixedly connected to a scraper. A disassembly assembly is provided on one side of the cooling rack.

[0007] As a further description of the above technical solution: The disassembly assembly includes a support block and a limiting block. One side of the support block is fixedly connected to the top of the support frame, and one side of the limiting block is fixedly connected to the side wall of the cooling rack.

[0008] As a further description of the above technical solution: The bottom of the limiting block is fixedly connected to a limiting frame, and the limiting frame has a slot inside.

[0009] As a further description of the above technical solution: A connecting column is fixedly connected to one side of the support block, and a sliding column is slidably connected inside the connecting column.

[0010] As a further description of the above technical solution: One end of the sliding column is fixedly connected to a pressing plate, and one side of the pressing plate is fixedly connected to a locking column.

[0011] As a further description of the above technical solution: The engaging post engages with the slot, and a spring is provided on the outer wall of the sliding post.

[0012] As a further description of the above technical solution: One end of the spring is fixedly connected to the side wall of the extrusion disc, and the other end is fixedly connected to the inner wall of the connecting column.

[0013] This utility model has the following beneficial effects: 1. In this utility model, an external water source is driven by a water pump to flow, and the water source is sprayed out through a nozzle to cool the steel pipe. After cooling, residual impurities on the outer wall can be scraped off by a scraper, thereby achieving efficient cooling and removing residual impurities on the outer wall. This solves the problem that existing cooling devices leave oxide scale, cooling medium crystals, and uneven liquid film on the surface of the steel pipe after cooling, resulting in poor surface quality, low subsequent processing accuracy, and high scrap rate. This improves the surface quality, processing accuracy, and production efficiency of the steel pipe.

[0014] 2. In this utility model, by pulling the sliding column, the locking column is disengaged from the slot to unlock, thereby achieving the effect of quick installation and disassembly of the cooling components. This solves the problems of long time-consuming disassembly, cleaning and maintenance of the cooling components of existing cooling devices, low fault repair efficiency, resulting in long equipment downtime and reduced production capacity. It improves equipment maintenance efficiency and production continuity, and reduces non-production losses. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of a high-efficiency cooling device for a hot-rolled seamless steel pipe mill proposed in this utility model; Figure 2 This is a schematic diagram of the structure of the high-efficiency cooling device for a hot-rolled seamless steel pipe mill proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the top structure of the support frame of a high-efficiency cooling device for a hot-rolled seamless steel pipe mill proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0016] Legend: 1. Body; 2. Support frame; 3. Cooling frame; 4. Water pump; 5. Drain pipe; 6. Connecting pipe; 7. Nozzle; 8. Support rod; 9. Spring 1; 10. Scraper; 11. Support block; 12. Limiting block; 13. Limiting frame; 14. Connecting column; 15. Sliding column; 16. Engaging column; 17. Slot; 18. Extrusion plate; 19. Spring 2. Detailed Implementation

[0017] 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.

[0018] Reference Figures 1-3 An embodiment of this utility model is provided: a high-efficiency cooling device for hot-rolled seamless steel pipe mill, including a machine body 1, a support frame 2 fixedly connected to one side of the machine body 1, and a cooling component provided on the top of the support frame 2 for rapidly cooling the steel pipe body; The cooling assembly includes a cooling rack 3, which is slidably connected to the top of the support frame 2. A water pump 4 is fixedly connected to the top of the cooling rack 3 to drive the water flow and achieve rapid cooling. A diversion pipe 5 is fixedly connected to the output end of the water pump 4. Multiple connecting pipes 6 are fixedly connected inside the diversion pipe 5. A nozzle 7 is fixedly connected to one end of each connecting pipe 6, which can accurately spray cooling liquid according to actual cooling needs to ensure uniform cooling of the surface of the hot-rolled steel pipe. Symmetrical support rods 8 are fixedly connected inside the cooling rack 3. The support rods 8 play a stabilizing and supporting role in the cooling rack 3. A spring 9 is set on one side of each support rod 8. The function of the spring 9 is to adjust its elasticity to ensure that the scraper 10 can always maintain appropriate pressure during operation, ensuring that impurities on the surface of the steel pipe are removed and avoiding affecting the cooling effect. One end of the spring 9 is fixedly connected to the side wall of the support rod 8, and the other end is fixedly connected to the scraper 10. A disassembly assembly is set on one side of the cooling rack 3. The design of the disassembly assembly takes into account the need for regular maintenance and cleaning of the equipment to ensure the long-term stable operation of the cooling system. Reference Figure 4 and Figure 5 The disassembly assembly includes a support block 11 and a limiting block 12. One side of the support block 11 is fixedly connected to the top of the support frame 2, ensuring the stability of the entire cooling assembly. One side of the limiting block 12 is fixedly connected to the side wall of the cooling frame 3, which restricts the displacement of the cooling frame 3 and ensures that it always stays in the predetermined position during operation. The bottom of the limiting block 12 is fixedly connected to a limiting frame 13, and a slot 17 is provided inside the limiting frame 13. One side of the support block 11 is fixedly connected to a connecting column 14, and a sliding column 15 is slidably connected inside the connecting column 14. One end of the sliding column 15 is fixedly connected to a pressing plate 18, and one side of the pressing plate 18 is fixedly connected to a locking column 16. The locking column 16 engages with the slot 17, and the locking column 16 and the slot 17 in the limiting frame 13 are tightly fitted to ensure that the sliding column 15 will not be accidentally displaced during operation. A second spring 19 is provided on the outer wall of the sliding column 15. One end of the second spring 19 is fixedly connected to the side wall of the pressing plate 18, and the other end is fixedly connected to the inner wall of the connecting column 14.

[0019] Working principle: When using this high-efficiency cooling device for hot-rolled seamless steel pipe mills, the water pump 4 is first connected to the water source on the outer wall by personnel. The water pump 4 then drives the water source to flow, and the water flow is guided to the nozzle 7 through the diversion pipe 5 and connecting pipe 6. The water source is sprayed out through the nozzle 7, which first quickly cools the steel pipe. Then, the scraper 10 scrapes away the residual material on the outer wall of the water pipe. When it is necessary to maintain the cooling components, the sliding column 15 is pulled by personnel. The pulling force will drive the sliding column 15 to slide inside the connecting column 14, thereby driving the locking column 16 to move synchronously. When the locking column 16 moves, it will disengage from the locking groove 17 to unlock. After unlocking, the cooling frame 3 can be pulled to quickly cool the components and facilitate maintenance by personnel.

[0020] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency cooling device for a hot-rolled seamless steel pipe mill, comprising a machine body (1), characterized in that: A support frame (2) is fixedly connected to one side of the body (1), and a cooling component is provided on the top of the support frame (2); The cooling assembly includes a cooling rack (3), which is slidably connected to the top of the support frame (2). A water pump (4) is fixedly connected to the top of the cooling rack (3). A drain pipe (5) is fixedly connected to the output end of the water pump (4). Multiple connecting pipes (6) are fixedly connected inside the drain pipe (5). A nozzle (7) is fixedly connected to one end of each of the multiple connecting pipes (6). Symmetrical support rods (8) are fixedly connected inside the cooling rack (3). A spring (9) is provided on one side of each of the two support rods (8). One end of the spring (9) is fixedly connected to the side wall of the support rod (8), and the other end is fixedly connected to a scraper (10). A disassembly assembly is provided on one side of the cooling rack (3).

2. The high-efficiency cooling device for hot-rolled seamless steel pipe mills according to claim 1, characterized in that: The disassembly assembly includes a support block (11) and a limiting block (12). One side of the support block (11) is fixedly connected to the top of the support frame (2), and one side of the limiting block (12) is fixedly connected to the side wall of the cooling rack (3).

3. The high-efficiency cooling device for hot-rolled seamless steel pipe mills according to claim 2, characterized in that: The bottom of the limiting block (12) is fixedly connected to the limiting frame (13), and the limiting frame (13) has a slot (17) inside.

4. The high-efficiency cooling device for hot-rolled seamless steel pipe mills according to claim 3, characterized in that: A connecting column (14) is fixedly connected to one side of the support block (11), and a sliding column (15) is slidably connected inside the connecting column (14).

5. The high-efficiency cooling device for hot-rolled seamless steel pipe mills according to claim 4, characterized in that: One end of the sliding column (15) is fixedly connected to the extrusion plate (18), and one side of the extrusion plate (18) is fixedly connected to the locking column (16).

6. A high efficiency cooling device for a hot rolling seamless steel tube mill as claimed in claim 5, characterized in that: The engaging post (16) engages with the slot (17), and a spring (19) is provided on the outer wall of the sliding post (15).

7. A high efficiency cooling device for a hot rolling seamless steel tube mill as claimed in claim 6, characterized in that: One end of the second spring (19) is fixedly connected to the side wall of the extrusion plate (18), and the other end is fixedly connected to the inner wall of the connecting column (14).

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