Converter slag detection thermal imager water-cooled protective cover

Abstract

The utility model provides converter slag detection thermal imager water -cooling protective cover relates to cold protective cover technical field, including adjustable support, the outside of adjustable support is equipped with the clamp, the top of adjustable support is equipped with the universal joint, the top of universal joint is equipped with the protective cover main part, the import is equipped with in protective cover main part one end top surface, the export is equipped with in protective cover main part other end bottom surface, the inside of protective cover main part inner wall is equipped with the heat insulation chamber, adopt to set up dustproof pipe in cover head side, the bottom is equipped with the air inlet, gas is formed even air curtain through annular air duct, sprays from the periphery of lens, constitutes a layer of sweeping gas protection layer, effectively prevents dust and splashing to adhere lens, and maintains the stable pressure difference inside and outside cavity. The overall structure has realized the comprehensive protection effect of heat insulation, cooling, dust prevention, anti -spatter and stable imaging, has improved the reliability and detection precision of thermal imager in high temperature high dust steelmaking environment significantly, solved the shortcoming that ordinary metal protective cover often is difficult to provide stable reliable protection effect.

Description

Technical Field

[0001] This utility model relates to the field of cold protective cover technology, and in particular to a water-cooled protective cover for a converter slag detection thermal imager. Background Technology

[0002] In converter steelmaking, to improve steel purity and ensure tapping quality, real-time monitoring and assessment of slag contamination in the steel stream are necessary during the tapping stage. Currently, infrared thermal imagers are commonly used to continuously detect the temperature field and radiation characteristics of the steel stream at the tapping spout, thereby identifying the boundary between molten steel and slag and enabling automatic slag identification and process control. However, the converter tapping environment is extremely harsh, with intense high-temperature radiation, high dust concentration, and significant flue gas disturbance, accompanied by high-temperature splashes of molten steel and slag. This makes thermal imagers prone to problems such as detector overheating, lens contamination, and even equipment damage during long-term operation. Especially under conditions of drastic temperature fluctuations in the initial tapping stage and frequent slag flow impacts in the final stage, ordinary metal protective covers often fail to provide stable and reliable protection. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies where ordinary metal protective covers often fail to provide stable and reliable protection, and to propose a water-cooled protective cover for a converter slag detection thermal imager.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a water-cooled protective cover for a converter slag detection thermal imager, comprising an adjustable support column, a clamp on the outside of the adjustable support column, a universal joint on the top of the adjustable support column, a protective cover body on the top of the universal joint, an inlet on the top surface of one end of the protective cover body, an outlet on the bottom surface of the other end of the protective cover body, a heat insulation cavity inside the inner wall of the protective cover body, a cover head on the side of the protective cover body away from the inlet, a dustproof pipe on the side of the cover head away from the protective cover body, a protective lens between the cover head and the protective cover body, an air inlet on the bottom surface of the cover head, ventilation holes on the inner wall of the cover head, an air duct inside the cover head, a dustproof net inside the air duct, and a fixing ring on the outside of the dustproof net.

[0005] Preferably, the clamp is engaged with the adjustable support, the bottom surface of the universal joint is bolted to the adjustable support, and the top surface of the universal joint is bolted to the main body of the protective cover.

[0006] Preferably, the protective lens is snapped into the protective cover body, and the cover head is threadedly connected to the protective cover body, and the dustproof tube is bolted to the cover head.

[0007] Preferably, the inlet and outlet are arranged in a mirror cross shape with the main body of the protective cover as the center, and both the inlet and outlet are connected to the heat insulation cavity.

[0008] Preferably, the air duct inside the hood is connected to the air inlet and the ventilation hole.

[0009] Preferably, both the dustproof net and the fixing ring are installed inside the air duct, and the dustproof net is sleeved with the inner wall of the cover head where ventilation holes are provided.

[0010] Preferably, the fixing ring is sleeved with the dustproof net, and the dustproof net is fixed to the inner wall of the cover head by the fixing ring.

[0011] Beneficial effects In this invention, a heat insulation cavity is provided between the inner walls of the protective cover body. Cooling is achieved by connecting a vortex tube or water-cooling pipe, allowing cool air or water to circulate within the heat insulation cavity. This effectively isolates external high-temperature radiation and reduces the cover temperature, ensuring the thermal imager operates in a sealed, constant-temperature environment. A high-transmittance infrared germanium protective lens is installed between the protective cover body and the cover head. Both sides of the lens are coated with an anti-reflection film and a hard carbon film, improving infrared transmittance and image clarity while enhancing wear resistance and high-temperature resistance, achieving dual optical and structural protection. Furthermore, a dustproof tube is provided on the side of the cover head, and an air inlet is located at the bottom. Gas flows through an annular air duct to form a uniform air curtain, which is then ejected from around the lens, creating a purge airflow protective layer. This effectively prevents dust and splashes from adhering to the lens and maintains a stable pressure difference between the inside and outside of the cavity. The overall structure achieves comprehensive protection effects of heat insulation, cooling, dust prevention, splash prevention, and stable imaging, significantly improving the reliability and detection accuracy of thermal imagers in high-temperature and high-dust steelmaking environments, and solving the shortcomings of ordinary metal protective covers that often fail to provide stable and reliable protection. Attached Figure Description

[0012] Figure 1 This is an isometric drawing of the present invention; Figure 2 This is a partial front view of the present invention; Figure 3 For the present utility model Figure 2 Sectional view at point AA; Figure 4 This is a partial right view of the present invention; Figure 5 For the present utility model Figure 4 Sectional view at BB; Figure 6 This is a partial perspective view of the present invention.

[0013] Legend: 1. Adjustable support column; 2. Clamp; 3. Universal joint; 4. Protective cover body; 5. Cover head; 6. Dustproof pipe; 7. Inlet; 8. Outlet; 9. Air inlet; 10. Air duct; 11. Fixing ring; 12. Dustproof net; 13. Protective lens; 14. Heat insulation cavity; 15. Ventilation hole. Detailed Implementation

[0014] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0015] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1: Reference Figure 1-6 The water-cooled protective cover for the converter slag detection thermal imager includes an adjustable support column 1, with a clamp 2 on the outside of the adjustable support column 1, a universal joint 3 on the top of the adjustable support column 1, and a protective cover body 4 on the top of the universal joint 3. One end of the protective cover body 4 has an inlet 7 on its top surface, and the other end has an outlet 8 on its bottom surface. The inner wall of the protective cover body 4 has an insulation cavity 14. A cover head 5 is located on the side of the protective cover body 4 away from the inlet 7, and a dustproof pipe 6 is located on the side of the cover head 5 away from the protective cover body 4. A protective lens 13 is located between the cover head 5 and the protective cover body 4. An air inlet 9 is located on the bottom surface of the cover head 5, and ventilation holes 15 are located on the inner wall of the cover head 5. An air duct 10 is located inside the cover head 5, and a dustproof net 12 is located inside the air duct 10. The dustproof net 12 is surrounded by a protective cover. The fixed ring 11 and clamp 2 are engaged with the adjustable support column 1. The bottom surface of the universal joint 3 is bolted to the adjustable support column 1, and the top surface of the universal joint 3 is bolted to the protective cover body 4. The protective lens 13 is engaged with the protective cover body 4, and the cover head 5 is threaded to the protective cover body 4. The dustproof pipe 6 is bolted to the cover head 5. The inlet 7 and outlet 8 are arranged in a mirror cross shape with the protective cover body 4 as the center, and both the inlet 7 and outlet 8 are connected to the heat insulation cavity 14. The air duct 10 inside the cover head 5 is connected to the air inlet 9 and the ventilation hole 15. The dustproof net 12 and the fixed ring 11 are both installed inside the air duct 10, and the dustproof net 12 is sleeved with the inner wall of the cover head 5 where the ventilation hole 15 is provided. The fixed ring 11 is sleeved with the dustproof net 12, and the dustproof net 12 is fixed to the inner wall of the cover head 5 through the fixed ring 11.

[0017] The adjustable support column 1 employs a telescopic structure to adjust its support height, thereby changing the observation position of the thermal imager. After telescoping, tightening the bolts of the clamp 2 locks the column in place, allowing the clamp 2 to transmit radial constraint force to maintain the length of the adjustable support column 1. A universal joint 3 is located at the top of the support column and bolted to the adjustable support column 1. The structure of the universal joint 3 allows the top protective cover body 4 to freely adjust its angle around the two axes of the universal joint 3. The protective cover body 4 is bolted to the universal joint 3, thus adjusting the pointing angle of the thermal imager, and the universal joint 3 maintains a rigid position after locking. The protective cover body 4 adopts a double-shell structure, forming a heat insulation cavity 14 between the inner and outer walls. The heat insulation cavity 14 is connected to an external cold source via an inlet 7 and communicates with an outlet 8. The inlet 7 and outlet 8 are arranged in a mirror-image cross configuration to ensure a controllable inflow and outflow channel for cold air or cooling water within the heat insulation cavity 14. When the vortex tube is connected to inlet 7 and started working, it separates the external compressed air into a low-temperature airflow. The cold air enters the insulation cavity 14 and forms a thin layer of flow along the shell wall. During the flow, it carries away the heat from the wall and forms a cooling layer, thereby isolating the cavity where the thermal imager is located from the external high-temperature heat source. The cooled and insulated air is discharged through outlet 8. When the vortex tube is replaced with a water-cooled pipeline, the cooling water entering through inlet 7 will fill the insulation cavity 14 to form a water-cooled insulation layer. The circulating cooling water enters through inlet 7, absorbs heat along the cavity, and is discharged back to the cooling circulation system from outlet 8. The cooling liquid achieves greater heat load transfer and more stable temperature control. The protective cover body 4 and the cover head 5 are completely sealed internally through a sealing ring and a protective lens 13. The sealing ring wraps around the edge of the protective lens 13, which is installed in a slot at the front end of the protective cover body 4. When the cover head 5 is screwed onto the protective cover body 4, it secures the protective lens 13 in the slot, thus fixing it in place. The sealing structure formed by the sealing ring and the protective lens 13 ensures the airtightness of the interior of the protective cover body 4, preventing dust from entering and affecting the thermal imager. The protective lens 13 uses a germanium substrate, with a high-transmittance anti-reflection coating on one side to improve infrared transmission efficiency and a hard carbon coating on the other side to improve surface hardness and corrosion resistance. An air inlet 9 is located at the bottom of the hood 5 and connects to an external air duct. After entering the hood 5, the air enters the annular air duct 10. The hood 5 is circular, and the ventilation holes 15 on the inner wall of the annular hood 5 are connected to the air duct 10 to ensure that the airflow is evenly distributed to the periphery of the lens to form an air curtain. The size and arrangement of the air outlets of the ventilation holes 15 ensure that a stable air curtain is formed around the lens. The air curtain uses a certain dynamic pressure to prevent dust, slag, and fumes from adhering to the lens surface. A dustproof net 12 is installed inside the air duct 10 and is fixed by a retaining ring 11. The dustproof net 12 intercepts larger particles and forms a replaceable filter assembly with the retaining ring 11 for maintenance. The sleeve structure between the dustproof net 12 and the inner wall of the hood 5 ensures that the filter layer will not shift under the impact of airflow.The dustproof pipe 6 is bolted to the cover 5 to serve as the airflow outlet 8 channel. The purged gas and intercepted dust are discharged along the dustproof pipe 6. All external connections are arranged in the rear cover plate of the protective cover and connected to the pipeline through plastic-coated flexible tubing to avoid damage in high-temperature and corrosive environments. The cover material is selected from double-layer stainless steel or aluminum alloy to balance strength, corrosion resistance and heat dissipation management. Specific Implementation Example 2: Reference Figure 1-6 The water-cooled protective cover for the converter slag detection thermal imager is further based on the basic structure in Specific Embodiment 1. During installation, after adjusting the telescopic support to the target height, clamp it with clamp 2. Adjust the orientation of the protective cover body 4 with universal joint 3 and lock it with bolts to fix the observation angle. Then, start the cold source. The vortex tube separates the external compressed air into a low-temperature airflow and enters the heat insulation cavity 14 through inlet 7, or start the water cooling circulation to inject cooling water into the heat insulation cavity 14. The cold medium flows along the shell wall in the heat insulation cavity 14 to carry away heat. The cooled medium flows back to the cold source through outlet 8. The air may be discharged, while the external air source is sent into the annular air duct 10 of the cover head 5 through the air inlet 9. The airflow is sprayed out from the periphery of the protective lens 13 through the ventilation hole 15 to form an air curtain. The air curtain forms an air pressure protective layer on the surface of the protective lens 13 to prevent dust and splashes from contacting the protective lens 13. At the same time, the dustproof net 12 inside the air duct will prevent dust from being blown into the interior of the air duct by the air curtain through the ventilation hole 15, so that the thermal imager inside the protective cover body 4 is always kept in a constant temperature state, ensuring that the thermal imager works stably, clearly and reliably for a long time under the condition of converter slag detection.

[0019] In summary: 1. A heat insulation cavity 14 is provided between the inner walls of the protective cover body 4. Cooling is achieved by connecting vortex tubes or water-cooling pipes, allowing cool air or cooling water to circulate within the heat insulation cavity 14. This effectively isolates external high-temperature radiation and reduces the temperature of the cover, ensuring that the thermal imager operates in a sealed, constant-temperature environment. A high-transmittance infrared germanium protective lens 13 is installed between the protective cover body 4 and the cover head 5. The lens is coated with an anti-reflection film and a hard carbon film on both sides, which not only improves infrared transmittance and image clarity but also enhances wear resistance and high-temperature resistance, achieving dual protection for both optics and structure. In addition, a dustproof pipe 6 is provided on the side of the cover head 5, and an air inlet 9 is provided at the bottom. Gas forms a uniform air curtain through an annular air duct 10 and is sprayed out from around the lens, forming a purge airflow protective layer, effectively preventing dust and splashes from adhering to the lens and maintaining a stable pressure difference between the inside and outside of the cavity. The overall structure achieves comprehensive protection effects of heat insulation, cooling, dust prevention, splash prevention, and stable imaging, significantly improving the reliability and detection accuracy of thermal imagers in high-temperature and high-dust steelmaking environments, and solving the shortcomings of ordinary metal protective covers that often fail to provide stable and reliable protection.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A water-cooled protective cover for a converter slag detection thermal imager, comprising an adjustable support column (1), characterized in that: The adjustable support (1) is provided with a clamp (2) on the outside, a universal joint (3) is provided on the top of the adjustable support (1), a protective cover body (4) is provided on the top of the universal joint (3), an inlet (7) is provided on the top surface of one end of the protective cover body (4), and an outlet (8) is provided on the bottom surface of the other end of the protective cover body (4). A heat insulation cavity (14) is provided inside the inner wall of the protective cover body (4). A cover head (5) is provided on the side of the protective cover body (4) away from the inlet (7). A dustproof pipe (6) is provided on the side of the cover head (5) away from the protective cover body (4). A protective lens (13) is provided between the cover head (5) and the protective cover body (4). An air inlet (9) is provided on the bottom surface of the cover head (5). A ventilation hole (15) is provided on the inner wall of the cover head (5). An air duct (10) is provided inside the cover head (5). A dustproof net (12) is provided inside the air duct (10). A fixing ring (11) is provided on the outside of the dustproof net (12).

2. The water-cooled protective cover for the converter slag detection thermal imager according to claim 1, characterized in that: The clamp (2) is engaged with the adjustable support (1), the bottom surface of the universal joint (3) is bolted to the adjustable support (1), and the top surface of the universal joint (3) is bolted to the protective cover body (4).

3. The water-cooled protective cover for the converter slag detection thermal imager according to claim 1, characterized in that: The protective lens (13) is snapped into the protective cover body (4), and the cover head (5) is threaded into the protective cover body (4). The dustproof tube (6) is bolted into the cover head (5).

4. The water-cooled protective cover for the converter slag detection thermal imager according to claim 1, characterized in that: The inlet (7) and outlet (8) are arranged in a mirror cross shape with the protective cover body (4) as the center, and both the inlet (7) and outlet (8) are connected to the heat insulation cavity (14).

5. The water-cooled protective cover for the converter slag detection thermal imager according to claim 1, characterized in that: The air duct (10) inside the hood (5) is connected to the air inlet (9) and the ventilation hole (15).

6. The water-cooled protective cover for the converter slag detection thermal imager according to claim 1, characterized in that: The dustproof net (12) and the fixing ring (11) are both installed inside the air duct (10), and the dustproof net (12) and the inner wall of the cover (5) with ventilation holes (15) are connected.

7. The water-cooled protective cover for the converter slag detection thermal imager according to claim 1, characterized in that: The fixing ring (11) is sleeved with the dustproof net (12), and the dustproof net (12) is fixed to the inner wall of the cover (5) by the fixing ring (11).

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