A cooling device for an oriented silicon steel coil
By designing cooling devices for the enclosure and platform, and using blowers to rapidly cool the grain-oriented silicon steel coils, the problems of long external cooling time and high heat radiation in the annular furnace were solved, thus improving production efficiency and environmental protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CERI PHOENIX INDAL FURNACE CO TD
- Filing Date
- 2026-03-09
- Publication Date
- 2026-06-16
AI Technical Summary
In existing technologies, the natural cooling time of oriented silicon steel coils outside the ring furnace is long and the cooling effect is poor, resulting in a slow production pace and large heat radiation in the surrounding environment, which affects the temperature of equipment and plant environment.
A cooling device comprising a cover and a base is designed. The cover and base are fitted with inner and outer sleeves to form an annular cavity. Air is blown in by a blower and passes through the annular cavity, a guide plate and an internal cavity in sequence before being discharged, thereby achieving rapid cooling and reducing heat radiation to the surrounding environment.
It improved the production pace, increased the output of silicon steel coils, reduced heat radiation from surrounding equipment, improved the factory environment temperature, and lowered production costs.
Smart Images
Figure CN122214616A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of metal heat treatment technology, specifically a cooling device for oriented silicon steel coils. Background Technology
[0002] Grain-oriented silicon steel is an indispensable soft magnetic functional material in the power and electronics industries, possessing high magnetic induction and low iron loss characteristics. In the technical field of heat treatment of grain-oriented silicon steel, a ring furnace is used for high-temperature annealing. If, after annealing, the steel is cooled online to room temperature before being unloaded, the online time for the ring furnace and the silicon steel coil needs to be increased. To ensure production rhythm, in existing technologies, silicon steel coils are unloaded when cooled to below 300°C. After unloading, the inner cover is removed on a trolley, and the coils are allowed to cool naturally in the atmosphere to a certain temperature before being sent to the next production process. Depending on the production schedule, most of the time, the silicon steel coils are removed from the trolley and placed on the surrounding open space to cool naturally to the temperature of the next process, resulting in significant heat radiation to the surrounding environment and a long cooling time. Summary of the Invention
[0003] To rapidly cool oriented silicon steel outside the ring furnace, this invention provides a cooling device for oriented silicon steel coils. This device not only allows high-temperature steel coils to be cooled quickly without being cooled to too low a temperature on the ring furnace production line, effectively improving production speed and silicon steel output, but also solves the problem of heat radiation to the surrounding environment after oriented silicon steel exits the furnace, better protecting surrounding equipment and improving the plant environment temperature.
[0004] The technical solution adopted by the embodiments of the present invention to solve its technical problem is as follows: A cooling device for oriented silicon steel coils includes an upper and lower shroud and a base. The shroud contains an outer shell and an inner cavity. An air outlet is provided on the outer shell. The base contains an inner vertical cylinder and an outer vertical cylinder, which are separated by an inner and outer sleeve. An annular cavity is formed between the inner and outer vertical cylinders. A guide plate is connected to the upper end of the inner vertical cylinder. An air inlet is provided on the outer vertical cylinder. Air entering from the air inlet can pass through the annular cavity, the guide plate, and the inner cavity in sequence before being discharged from the air outlet.
[0005] The beneficial effects of the embodiments of the present invention are: 1. It solves the problem of long cooling time and poor effect of workpieces naturally cooling outside the furnace.
[0006] 2. It improved the production pace, effectively increased the output of grain-oriented silicon steel, and saved production costs.
[0007] 3. It reduces heat radiation to the surrounding environment, better protects surrounding equipment, and improves the temperature of the factory environment. Attached Figure Description
[0008] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.
[0009] Figure 1 This is a front view schematic diagram of the cooling device for the oriented silicon steel coil described in this invention.
[0010] Figure 2 This is a right-side schematic diagram of the cooling device for the oriented silicon steel coil described in this invention.
[0011] Figure 3 This is a schematic diagram of the connection between the exhaust duct and the vent pipe.
[0012] Figure 4 This is a top view of the air deflector.
[0013] Figure 5 This is a bottom view of the air deflector.
[0014] Figure 6 It is the edge of the pedestal Figure 1 Cross-sectional view along the AA direction.
[0015] Figure 7 This is a front view schematic diagram of two parallel cooling devices for the oriented silicon steel coil described in this invention.
[0016] Figure 8 This is a top view schematic diagram of two parallel cooling devices for the oriented silicon steel coil described in this invention.
[0017] The annotations in the attached figures are explained as follows: 1. Blower; 2. Cover; 3. Base; 4. Baffle; 5. Second sealing gasket; 6. Vent pipe; 7. Steel coil to be cooled; 8. First sealing gasket; 21. Outer casing; 22. Internal cavity; 23. Air outlet; 24. Exhaust duct; 31. Inner vertical cylinder; 32. Intermediate vertical cylinder; 33. Outer vertical cylinder; 34. Annular cavity; 35. Air inlet; 36. Top plate; 41. Top shelf; 42. Middle shelf; 43. Bottom shelf; 61. First annular sealing groove; 211. Upper vertical tube section; 212. Conical transition section; 213. Lower vertical tube section; 241. Vertical segment; 242. Horizontal segment; 321. Vent hole; 331. Import section; 332. Main body section; 341. Annular inner cavity; 342. Annular outer cavity; 361. Second annular sealing groove; 411. Upper support bar; 412. Upper radial guide groove; 421. Gap; 431. Lower support bar; 432. Lower radial guide groove. Detailed Implementation
[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0019] For ease of understanding and description, the following description of the present invention uses absolute positional relationships. Unless otherwise specified, the directional term "above" indicates... Figure 1 The direction above, the directional word "down" indicates Figure 1 The lower side of the middle, the directional word "left" indicates Figure 1 The left side of the direction, the directional word "right" indicates Figure 1 The right-hand direction in the text, the directional word "front" indicates perpendicular to. Figure 1 The direction of the paper and the direction pointing inwards; the directional word "back" indicates perpendicular to. Figure 1 The orientation of the paper is pointed outwards from the viewpoint of the reader or user. This invention is described from the perspective of the reader or user, but the aforementioned directional terms should not be construed as limiting the scope of protection of this invention. Regarding the material, weight, size, angle, and parameters of the components, those skilled in the art can determine or replace them according to actual needs or a limited number of experiments.
[0020] like Figure 1 , Figure 2 As shown, the cooling device for the oriented silicon steel coil described in this embodiment includes a cover 2 and a base 3 arranged vertically. The cover 2 contains an outer shell 21 and an inner cavity 22. An air outlet 23 is provided on the outer shell 21. The base 3 contains an inner vertical cylinder 31 and an outer vertical cylinder 33 arranged in an inner and outer sleeve. An annular cavity 34 is formed between the inner vertical cylinder 31 and the outer vertical cylinder 33. A guide plate 4 is connected to the upper end of the inner vertical cylinder 31. An air inlet 35 is provided on the outer vertical cylinder 33. The air entering from the air inlet 35 can pass through the annular cavity 34, the guide plate 4 and the inner cavity 22 in sequence before being discharged from the air outlet 23.
[0021] The cooling device for the oriented silicon steel coils can not only cool the high-temperature steel coils quickly, but also allow them to be removed from the production line without being cooled to too low a temperature on the ring furnace production line. This effectively improves the production pace and the output of silicon steel. It can also solve the problem of heat radiation to the surrounding environment after the oriented silicon steel is removed from the furnace, better protect the surrounding equipment, and improve the temperature of the plant environment.
[0022] like Figure 1 , Figure 2As shown, the outer shell 21 contains an upper vertical cylindrical section 211, a conical transition section 212, and a lower vertical cylindrical section 213 connected sequentially from top to bottom. Both the upper vertical cylindrical section 211 and the lower vertical cylindrical section 213 are upright cylindrical structures. The inner diameter of the upper vertical cylindrical section 211 is smaller than the inner diameter of the lower vertical cylindrical section 213. The air outlet 23 is located on the side wall of the upper vertical cylindrical section 211. The upper end of the upper vertical cylindrical section 211 is in a closed state, and the lower end of the upper vertical cylindrical section 211 is in an open state. The lower vertical cylindrical section 213 can accommodate the steel coil 7 to be cooled.
[0023] like Figure 1 , Figure 2 , Figure 3 The cooling device for the oriented silicon steel coil shown also includes a vent pipe 6 and a first sealing gasket 8. The vent pipe 6 is horizontal and extends in the left-right direction. The cover 2 also includes an exhaust duct 24. The outer shell 21 and the exhaust duct 24 are connected (welded) and fixed as a whole. The exhaust duct 24 includes a vertical section 241 and a horizontal section 242 connected front to back. The vertical section 241 extends in the up-down direction, and the horizontal section 242 extends in the front-back direction. The rear end of the horizontal section 242 is the inlet end of the exhaust duct 24. The inlet end of the exhaust duct 24 is connected to the outlet. 23. The vertical section 241 is fixed with a sealing connection. The lower end of the vertical section 241 is the outlet end of the exhaust duct 24. The outlet end of the exhaust duct 24 is directly opposite the inlet end of the venting pipe 6. The inlet end of the venting pipe 6 is provided with a first annular sealing groove 61. The first sealing gasket 8 is fitted inside the first annular sealing groove 61. The material of the first sealing gasket 8 can be rubber. The outlet end of the exhaust duct 24 is sealed and connected to the first sealing gasket 8. The first sealing gasket 8 is sealed and connected to the inlet end of the venting pipe 6. The cover 2 can move upward and separate from (away from) the venting pipe 6.
[0024] When the grain-oriented silicon steel coil has cooled, the outlet end of the exhaust duct 24 and the inlet end of the venting pipe 6 are detachably and sealed together. When loading or unloading is required, the enclosure 2 can be lifted away as a whole, facilitating the installation and removal of the enclosure 2, the platform 3, and the venting pipe 6. The venting pipe 6 is fixed to the surrounding steel structure columns and foundation. One end of the venting pipe 6 is connected to the exhaust duct 24 of the enclosure 2, and the other end leads outside the plant for the release of hot air.
[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the axis of the cover 2, the axis of the platform 3, and the axis of the guide plate 4 all coincide. The cover 2 and the platform 3 are both in an upright state. The platform 3 is fixed on the foundation. The guide plate 4 is used to place the steel coil 7 to be cooled. The guide plate 4 has an annular structure and is in a horizontal state. The axis of the guide plate 4 coincides with the axis of the inner vertical cylinder 31. The outer diameter of the guide plate 4 is smaller than the outer diameter of the annular cavity 34. The guide plate 4 contains an upper plate 41, a middle plate 42, and a lower plate 43 that are stacked and connected (welded) from top to bottom.
[0026] The upper plate 41 contains multiple (e.g., 16) upper support bars 411, which are arranged at intervals along the circumference of the guide plate 4. The upper support bars 411 are elongated strips and extend radially along the guide plate 4. An upper radial guide groove 412 is formed between two adjacent upper support bars 411, and air can flow along the upper radial guide groove 412.
[0027] like Figure 4 , Figure 5 As shown, the middle plate 42 has a ring structure and is horizontal. Multiple notches 421 are provided on the outer side of the middle plate 42. The notches 421 are channels for gas to diffuse upward. The multiple notches 421 are arranged at intervals along the circumference of the guide plate 4. The notches 421 correspond one-to-one with the upper radial guide grooves 412.
[0028] The upper support bar 411 has a roughly fan-shaped structure. While extending radially along the guide plate 4, the upper support bar 411 also deviates from the radial direction of the guide plate 4. As air flows along the upper radial guide groove 412, a swirling effect is generated, which can achieve uniform cooling. At this time, the notch 421 is in an inclined state, and the inclination angle of the notch 421 is the same as the deviation angle of the upper support bar 411.
[0029] In addition, such as Figure 4 , Figure 5 As shown, the upper plate 41 has the same structure as the lower plate 43. The upper plate 41 and the lower plate 43 are symmetrical and mirror images of each other. The lower plate 43 contains a lower support strip 431 and a lower radial guide groove 432.
[0030] like Figure 6 As shown, an intermediate vertical cylinder 32 is sleeved between the inner vertical cylinder 31 and the outer vertical cylinder 33. The inner vertical cylinder 31, the intermediate vertical cylinder 32 and the outer vertical cylinder 33 are all upright cylindrical structures. The axes of the inner vertical cylinder 31, the intermediate vertical cylinder 32 and the outer vertical cylinder 33 are all coincident. The annular cavity 34 is divided by the intermediate vertical cylinder 32 into an inner annular cavity 341 and an outer annular cavity 342.
[0031] To ensure uniform airflow within the annular cavity 34, the wall of the intermediate vertical cylinder 32 is provided with multiple (e.g., 12) air passages 321. These air passages 321 are evenly spaced along the circumference of the intermediate vertical cylinder 32, and their diameter can be 200 mm. The inner annular cavity 341 and the outer annular cavity 342 are connected through the air passages 321, allowing gas from the outer annular cavity 342 to enter the inner annular cavity 341 through the air passages 321.
[0032] The inner diameter of the guide plate 4 is smaller than the inner diameter of the inner vertical cylinder 31. The guide plate 4 is connected vertically to the middle vertical cylinder 32. The outer diameter of the steel coil 7 to be cooled is smaller than the outer diameter of the guide plate 4, and the inner diameter of the steel coil 7 to be cooled is larger than the inner diameter of the guide plate 4.
[0033] like Figure 1 , Figure 2 As shown, the cooling device for the oriented silicon steel coil also includes a second sealing gasket 5, which is an annular structure and can be made of rubber. Since the cold air entering through the blower 1 has a high pressure, the second sealing gasket 5 can prevent the hot air from spreading, reduce the impact of hoisting, and is not easily blown away. The pedestal 3 also includes an upper top plate 36, which has an annular structure and is horizontal. The upper top plate 36 is provided with a second annular sealing groove 361, and a second sealing gasket 5 is fitted inside the second annular sealing groove 361. The upper part of the outer vertical cylinder 33 and the upper part of the middle vertical cylinder 32 are sealed and connected by the upper top plate 36. The upper end of the annular outer cavity 342 is closed by the upper top plate 36. The axis of the second sealing gasket 5, the axis of the upper top plate 36 and the axis of the cover 2 are all coincident. The second sealing gasket 5 and the upper top plate 36 are sealed and connected vertically. The cover 2 and the second sealing gasket 5 are sealed and connected vertically. The cover 2 can move upward and detach (move away from) the upper top plate 36.
[0034] The cooling device for the oriented silicon steel coil also includes a blower 1. The outer vertical cylinder 33 contains an inlet section 331 and a main body section 332 connected sequentially in the horizontal direction. The inlet section 331 has a flared structure, which facilitates the diffusion of air blown in by the blower. The main body section 332 has an arc-shaped structure and is fitted outside the inner vertical cylinder 31. The air inlet 35 is located at one end (inlet end) of the inlet section 331, and the air outlet of the blower 1 is correspondingly and sealed to the air inlet 35.
[0035] In addition, such as Figure 7 , Figure 8As shown, multiple cooling devices for the oriented silicon steel coils can be connected in parallel. Multiple devices can be combined for use depending on the actual situation, allowing for the simultaneous cooling of multiple coils. These cooling devices can share a single vent pipe 6. The vent pipe 6 is fixed to the surrounding steel structure columns and foundation. Gas passing through the silicon steel coils within the enclosure 2 carries away the heat from the coils. The resulting hot gas, exceeding atmospheric pressure, easily diffuses into the vent pipe 6 and is discharged into the atmosphere outside the factory.
[0036] The cooling device for the oriented silicon steel coil is low in cost, has a long service life, and provides fast and uniform cooling. It solves the problems of slow natural cooling of silicon steel coils after exiting the furnace and large heat radiation to surrounding equipment and the environment in the prior art, and greatly improves production efficiency.
[0037] The following describes the working process of the cooling device for oriented silicon steel coils (also known as the external cooling device for oriented silicon steel coils).
[0038] 1. Lift the cover 2 and place the steel coil 7 to be cooled onto the guide plate 4. The axis of the steel coil 7 to be cooled is approximately coincident with the axis of the guide plate 4. Lift the cover 2 back. The cover 2 and the second sealing gasket 5 are connected in an upper and lower sealing connection. The exhaust pipe 24 on the cover 2 is connected in an upper and lower sealing connection with the first sealing gasket 8 on the vent pipe 6.
[0039] 2. Start the blower 1. Air enters from the air inlet 35 and passes through the annular outer cavity 342, the air passage 321, the annular inner cavity 341, the upper radial guide groove 412 and the lower radial guide groove 432 of the guide plate 4, and the internal cavity 22 in sequence before being discharged from the air outlet 23. The air rapidly cools the steel coil 7 to be cooled in the internal cavity 22.
[0040] On one hand, the high-pressure cold air blown in by the blower 1 diffuses along the annular outer cavity 342 of the platform 3. The annular outer cavity 342 connects upwards to the outer ring of the upper silicon steel coil through the outer portions of the upper radial guide groove 412 and the lower radial guide groove 432, allowing the cold air to diffuse upwards and cool the outer ring of the steel coil 7 to be cooled. On the other hand, the cold air entering from the blower 1 diffuses upwards through the annular outer cavity 342, the air passage 321, the annular inner cavity 341, and the inner portions of the upper radial guide groove 412 and the lower radial guide groove 432 of the guide plate 4, reaching the inner ring of the steel coil 7 to be cooled. The hot air formed after the cold air cools the silicon steel coil is released into the atmosphere outside the plant through the air outlet 23, the exhaust duct 24, and the vent pipe 6.
[0041] This invention enables rapid cooling of silicon steel coils after they exit the furnace, improving production efficiency. Furthermore, airflow diffuses between the inner and outer rings of the silicon steel coils, ensuring uniform cooling. The cover, platform, and pipes are placed directly on the furnace, and the cover can be lifted directly, making it very convenient and eliminating the need for manual intervention. Hot air diffuses directly outside the factory through the pipes. If the temperature of the silicon steel coils to be cooled is too high, the pipes can be wrapped, preventing heat radiation to surrounding equipment.
[0042] The above description is merely a specific embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, substitutions of equivalent components, or equivalent changes and modifications made within the scope of protection of the present invention, should still fall within the scope of the present invention. Furthermore, the technical features, technical solutions, and embodiments of the present invention can be freely combined and used.
Claims
1. A cooling device for grain-oriented silicon steel coils, characterized in that, The cooling device for the oriented silicon steel coil includes a cover (2) and a platform (3) arranged vertically. The cover (2) contains an outer shell (21) and an inner cavity (22). An air outlet (23) is provided on the outer shell (21). The platform (3) contains an inner vertical cylinder (31) and an outer vertical cylinder (33) arranged in an inner and outer sleeve. An annular cavity (34) is formed between the inner vertical cylinder (31) and the outer vertical cylinder (33). A guide plate (4) is connected to the upper end of the inner vertical cylinder (31). An air inlet (35) is provided on the outer vertical cylinder (33). The air entering from the air inlet (35) can pass through the annular cavity (34), the guide plate (4) and the inner cavity (22) in sequence before being discharged from the air outlet (23).
2. The cooling device for grain-oriented silicon steel coils according to claim 1, characterized in that, The outer shell (21) contains an upper vertical cylinder section (211), a conical transition section (212) and a lower vertical cylinder section (213) connected from top to bottom. The inner diameter of the upper vertical cylinder section (211) is smaller than that of the lower vertical cylinder section (213). The air outlet (23) is located on the side wall of the upper vertical cylinder section (211). The lower vertical cylinder section (213) can accommodate the steel coil (7) to be cooled.
3. The cooling device for grain-oriented silicon steel coils according to claim 2, characterized in that, The cooling device for the oriented silicon steel coil also includes a venting pipe (6) and a first sealing gasket (8). The cover (2) also contains an exhaust pipe (24). The exhaust pipe (24) contains a vertical section (241) and a horizontal section (242) connected front and rear. The rear end of the horizontal section (242) is the inlet end of the exhaust pipe (24). The inlet end of the exhaust pipe (24) is sealed and fixed to the outlet (23). The lower end of the vertical section (241) is the outlet end of the exhaust pipe (24). The outlet end of the exhaust pipe (24) is directly opposite the inlet end of the venting pipe (6). A first annular sealing groove (61) is provided outside the inlet end of the venting pipe (6). The first sealing gasket (8) is fitted inside the first annular sealing groove (61). The outlet end of the exhaust pipe (24) is sealed and connected to the first sealing gasket (8) from top to bottom. The first sealing gasket (8) is sealed and connected to the inlet end of the venting pipe (6) from top to bottom. The cover (2) can move upward and detach from the venting pipe (6).
4. The cooling device for grain-oriented silicon steel coils according to claim 1, characterized in that, The guide plate (4) has an annular structure. The axis of the guide plate (4) coincides with the axis of the inner vertical cylinder (31). The outer diameter of the guide plate (4) is smaller than the outer diameter of the annular cavity (34). The guide plate (4) contains an upper plate (41), a middle plate (42) and a lower plate (43) that are stacked and fixed from top to bottom.
5. The cooling device for grain-oriented silicon steel coils according to claim 4, characterized in that, The upper plate (41) contains multiple upper support bars (411), which are arranged circumferentially along the guide plate (4). The upper support bars (411) extend radially along the guide plate (4), and an upper radial guide groove (412) is formed between two adjacent upper support bars (411).
6. The cooling device for grain-oriented silicon steel coils according to claim 5, characterized in that, The middle plate (42) has a ring structure and is horizontal. Multiple notches (421) are provided on the outer side of the middle plate (42). The multiple notches (421) are arranged at intervals along the circumference of the guide plate (4). The notches (421) correspond one-to-one with the upper radial guide groove (412).
7. The cooling device for grain-oriented silicon steel coils according to claim 5, characterized in that, The upper support bar (411) has a fan-shaped structure. The extension direction of the upper support bar (411) deviates from the radial direction of the guide plate (4). The upper plate (41) and the lower plate (43) are symmetrical and mirror images of each other.
8. The cooling device for grain-oriented silicon steel coils according to claim 4, characterized in that, An intermediate vertical cylinder (32) is sleeved between the inner vertical cylinder (31) and the outer vertical cylinder (33). The annular cavity (34) is divided by the intermediate vertical cylinder (32) into an inner annular cavity (341) and an outer annular cavity (342). Multiple air passage holes (321) are provided on the cylinder wall of the intermediate vertical cylinder (32). The multiple air passage holes (321) are evenly spaced along the circumference of the intermediate vertical cylinder (32). The inner diameter of the guide plate (4) is smaller than the inner diameter of the inner vertical cylinder (31). The guide plate (4) is connected to the intermediate vertical cylinder (32) vertically.
9. The cooling device for grain-oriented silicon steel coils according to claim 8, characterized in that, The cooling device for the oriented silicon steel coil also includes a second sealing gasket (5), which is an annular structure. The platform (3) also includes an upper top plate (36), which is an annular structure and is horizontal. A second annular sealing groove (361) is provided on the upper top plate (36). The second sealing gasket (5) is fitted inside the second annular sealing groove (361). The upper part of the outer vertical cylinder (33) and the upper part of the middle vertical cylinder (32) are sealed and connected by the upper top plate (36). The second sealing gasket (5) and the upper top plate (36) are sealed and connected vertically. The cover (2) and the second sealing gasket (5) are sealed and connected vertically. The cover (2) can move upward and detach from the upper top plate (36).
10. The cooling device for grain-oriented silicon steel coils according to claim 1, characterized in that, The cooling device for the oriented silicon steel coil also includes a blower (1). The outer vertical cylinder (33) contains an inlet section (331) and a main body section (332) connected in sequence. The inlet section (331) has a flared structure, and the main body section (332) has an arc-shaped structure. The main body section (332) is fitted outside the inner vertical cylinder (31). The air inlet (35) is located at one end of the inlet section (331), and the air outlet of the blower (1) is connected to the air inlet (35).