On-line centering detection device for submersed nozzle
By designing an immersive water port online centering detection device in continuous casting production, the centering frame and centering rod are used to achieve online centering of the water port, the centering problem is solved, and the centering accuracy and production stability are improved. sex.
Patent Information
- Application Number
- CN202421111427.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-02-11
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During continuous casting production, the centering problem of the water-in-the-middle port is difficult to effectively solve, resulting in unstable flow field in the crystallizer, affecting the quality of the casting billet, and may even cause production accidents such as steel leakage.
An immersion water outlet online centering detection device is designed. By erecting a centering frame at the upper port of the crystallizer and erecting a centering rod at the center position of the frame, the centering rod is used to perform online centering operation of the immersion water outlet.
It realizes rapid online alignment of immersive water outlets, improves centering accuracy, saves centering time, and ensures the stability and safety of continuous casting production.
Smart Images
Figure CN222448259U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an immersion type nozzle online centering detection device, belonging to the technical field of steelmaking continuous casting tundish pouring production equipment. Background Art
[0002] In the continuous casting process, the centering of the tundish nozzle is a key link to ensure continuous casting production. The speed and accuracy of the centering are particularly critical to the pouring operation and process control of continuous casting. If the tundish nozzle is not centered, the flow field in the crystallizer will be unstable, affecting the quality of the ingot. In severe cases, it will cause production accidents such as steel leakage. Before most continuous casting machines start pouring, they rely on manual visual inspection to judge the nozzle centering. For multi-stream continuous casting machines, the centering time will be longer and the accuracy will be poor. If the nozzle centering time is long, it will cause a temperature drop in the tundish and a decrease in the nozzle temperature, which is not conducive to the pouring operation. Therefore, it is very necessary to develop a tundish immersion nozzle centering detection device. Utility Model Content
[0003] The utility model aims to provide an online centering detection device for an immersed water inlet. A centering frame is placed on the upper mouth of a crystallizer, and a centering rod is erected at the center position of two adjacent sides of the centering frame. The immersed water inlet is centered online by using the centering rod. The utility model has a simple and reasonable structure and is safe and reliable to use. The operation of centering the immersed water inlet is simple, and online rapid centering of the immersed water inlet can be achieved, thereby improving the centering accuracy of the immersed water inlet, saving centering time, and effectively solving the above-mentioned problems existing in the background technology.
[0004] The technical solution of the utility model is: an online centering detection device for an immersion nozzle, comprising a ladle, a ladle long nozzle, a middle ladle, an immersion nozzle, a centering device and a crystallizer, wherein the centering device is placed on the upper mouth of the crystallizer, the immersion nozzle and the middle ladle are pre-connected when the middle ladle is repaired, and the ladle is connected to the ladle long nozzle and is arranged above the middle ladle;
[0005] The centering device includes front and rear centering rods, left and right centering rods, positioning rods, support rods and a centering frame. The positioning rods are connected to the four corners of the centering frame and inserted into the upper mouth of the crystallizer; the support rods are connected to the centering frame and horizontally placed on the upper edge of the upper mouth of the crystallizer; the front and rear centering rods and the left and right centering rods are perpendicular to the centering frame and are arranged at the center of the adjacent edges of the centering frame.
[0006] The size of the centering frame is slightly smaller than the size of the upper opening of the crystallizer.
[0007] There are three support rods.
[0008] For the multi-stream continuous casting machine, there are two centering devices, including a left-side water outlet centering device and a right-side water outlet centering device. The left-side water outlet centering device and the right-side water outlet centering device are respectively placed on the crystallizers of the side streams on both sides.
[0009] The beneficial effects of the utility model are as follows: by adopting a centering frame to be placed on the upper mouth of the crystallizer, a centering rod is erected at the center position of each of the two adjacent sides of the centering frame, and the centering rod is used to perform online centering of the submerged water nozzle. The structure is simple and reasonable, and the use is safe and reliable. The operation of centering the submerged water nozzle is simple, and the online rapid centering of the submerged water nozzle can be achieved, the centering accuracy of the submerged water nozzle is improved, and the centering time is saved. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is a diagram of the use state of the utility model;
[0011] Figure 2 This is a structural schematic diagram of the centering device of the right side water outlet of the utility model;
[0012] Figure 3 This is a structural schematic diagram of the left side water outlet centering device of the utility model;
[0013] In the figure: ladle 1, ladle long nozzle 2, middle ladle 3, immersion nozzle 4, left side outlet centering device 5, right side outlet centering device 6, crystallizer 7, front and rear centering rods 8, positioning rods 9, support rods 10, centering frame 11, left and right centering rods 12. DETAILED DESCRIPTION
[0014] In order to make the purpose, technical solution and advantages of the utility model implementation case clearer, the technical solution in the implementation case of the utility model will be clearly and completely described in combination with the drawings in the implementation case. Obviously, the implementation case described is a small part of the implementation case of the utility model, rather than all the implementation cases. Based on the implementation case in the utility model, all other implementation cases obtained by ordinary technicians in this field without making creative work are within the protection scope of the utility model.
[0015] An online centering detection device for an immersion nozzle comprises a ladle 1, a ladle long nozzle 2, a middle ladle 3, an immersion nozzle 4, a centering device and a crystallizer 7, wherein the centering device is placed on the upper mouth of the crystallizer 7, the immersion nozzle 4 and the middle ladle 3 are pre-connected when the middle ladle is repaired, and the ladle 1 is connected to the ladle long nozzle 2 and is arranged above the middle ladle 3;
[0016] The centering device includes front and rear centering rods 8, left and right centering rods 12, positioning rods 9, support rods 10 and a centering frame 11. The positioning rods 9 are connected to the four corners of the centering frame 11, and the positioning rods 9 are inserted into the upper mouth of the crystallizer 7; the support rods 10 are connected to the centering frame 11 and horizontally placed on the upper edge of the crystallizer 7; the front and rear centering rods 8 and the left and right centering rods 12 are perpendicular to the centering frame 11 and are arranged at the center of the adjacent edges of the centering frame 11.
[0017] The size of the centering frame 11 is slightly smaller than the size of the upper opening of the crystallizer 7 .
[0018] There are three support rods 10 .
[0019] For the multi-stream continuous casting machine, there are two centering devices, including a left-side water outlet centering device 5 and a right-side water outlet centering device 6. The left-side water outlet centering device 5 and the right-side water outlet centering device 6 are respectively placed on the crystallizers 7 of the side streams on both sides.
[0020] In actual application, when the continuous casting machine starts casting, the baked middle bag 3 is raised to a high position at the baking position, and the middle bag car is moved to the pouring position, that is, the submerged nozzle 4 reaches the top of the crystallizer 7, and the centering device is placed on the crystallizer 7. If it is a multi-stream continuous casting machine, the left side flow nozzle centering device 5 and the right side flow nozzle centering device 6 are placed on the side flow crystallizers 7 on both sides, respectively. If it is a single-stream continuous casting machine, only one centering device is needed. The middle bag 3 is lowered, and the submerged nozzle 4 stops when it is 50-150mm above the crystallizer 7. Manually check whether the submerged nozzle 4 and the front and rear centering rods 8 on the centering device are on the same vertical line. Then, the hydraulic device on the middle bag car can be operated to move the middle bag 3 forward and backward to complete the front and rear centering of the submerged nozzle 4. Then, the middle bag car is operated to slightly move left and right, so that the submerged nozzle 4 and the left and right centering rods 12 on the centering device are on the same vertical line, and the left and right centering of the submerged nozzle 4 is completed. This completes all the centering of the submerged nozzle 4.
[0021] After the submerged nozzle 4 is centered, the centering device is removed, the middle ladle car is lowered, the submerged nozzle 4 is inserted into the crystallizer 7, and the long nozzle 2 of the ladle is hung on the lower water outlet of the ladle 1, and the ladle pouring operation can be carried out. Example
[0022] The length of the positioning rod is 30-50mm, the length of the support rod is 15-25mm, and the length of the left and right centering rods and the front and rear centering rods is 100-150mm.
[0023] The front and rear centering rods are divided into left and right sides.
[0024] The centering device is welded from φ6.5-10mm straight round steel bars.
Claims
1. An immersion nozzle online centering detection device, characterized in that: The invention comprises a ladle (1), a ladle long nozzle (2), a middle ladle (3), an immersion nozzle (4), a centering device and a crystallizer (7), wherein the centering device is placed on the upper mouth of the crystallizer (7), the immersion nozzle (4) and the middle ladle (3) are pre-connected when the middle ladle is repaired, and the ladle (1) is connected to the ladle long nozzle (2) and is arranged above the middle ladle (3); The centering device comprises front and rear centering rods (8), left and right centering rods (12), positioning rods (9), support rods (10) and a centering frame (11); the positioning rods (9) are connected to the four corners of the centering frame (11); the positioning rods (9) are inserted into the upper opening of the crystallizer (7); the support rods (10) are connected to the centering frame (11) and horizontally placed on the upper edge of the upper opening of the crystallizer (7); the front and rear centering rods (8) and the left and right centering rods (12) are perpendicular to the centering frame (11) and are arranged at the center of the adjacent edges of the centering frame (11).
2. The device for online centering detection of an immersion nozzle according to claim 1, characterized in that: The size of the centering frame (11) is slightly smaller than the size of the upper opening of the crystallizer (7).
3. The device for detecting an immersion nozzle on-line centering according to claim 1, characterized in that: There are three support rods (10).
4. The device for detecting an immersion nozzle on-line centering according to claim 1, characterized in that: For a multi-stream continuous casting machine, there are two centering devices, including a left-side water outlet centering device (5) and a right-side water outlet centering device (6). The left-side water outlet centering device (5) and the right-side water outlet centering device (6) are respectively placed on the crystallizers (7) of the side streams on both sides.