Measuring device for flow field distribution in crystallizer

Abstract

The utility model relates to the field of crystallizers, and discloses a measuring device for flow field distribution in a crystallizer, which comprises a U-shaped frame, a first square tube is fixed on the bottom surface of the U-shaped frame, a connecting plate is fixed on the bottom surface of the first square tube, and a stainless steel plate is detachably arranged on the front side of the connecting plate. Two second square pipes are fixed to the top face of the first square pipe, and angle iron is detachably arranged in each second square pipe. According to the utility model, the simulation of a molten steel casting flow field in the crystallizer is facilitated, the liquid level flow field and fluctuation condition of the surface of the crystallizer under the conditions of submersed nozzles with different specifications and pulling speeds can be measured, the optimal requirements of the specifications and pulling speeds of the submersed nozzles are adjusted, the liquid level flow velocity of the crystallizer is reduced, the casting flow field is stabilized, and the slag entrapment risk is reduced; the molten steel quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of crystallizers, in particular to a measuring device for flow field distribution in a crystallizer. Background Art

[0002] The crystallizer is a continuous steel casting equipment that receives the molten steel injected from the tundish and solidifies it into a solid shell according to the specified cross-sectional shape. As one of the most critical components in the continuous casting process, the crystallizer is a continuous steel casting equipment that receives the molten steel injected from the tundish and solidifies it into a solid shell according to the specified cross-sectional shape. It has a vital impact on the quality of the molten steel. In order to prevent the molten steel from sticking to the inner wall of the crystallizer during the condensation process, reduce the friction resistance during billet drawing, improve the surface quality of the billet, and extend the service life of the crystallizer.

[0003] In production, protective slag with a boiling point higher than the temperature of the inner wall of the crystallizer (about 200°C) is used. During the vibration of the crystallizer, it is continuously brought to the inner wall below the steel liquid surface and forms a layer of oil and gas film or slag film between the molten steel or billet shell and the inner wall of the crystallizer to lubricate the inner wall. However, there are the following disadvantages: the influence of the molten steel flow field in the crystallizer on the melting of the protective slag and slag curling cannot be visually viewed, and the influence on the casting quality cannot be evaluated. Utility Model Content

[0004] The utility model aims to provide a device for measuring flow field distribution in a crystallizer to solve the problem that the influence of molten steel flow field in the crystallizer on the melting of protective slag and slag curling cannot be visually viewed and the influence on casting quality cannot be evaluated.

[0005] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme: a measuring device for the flow field distribution in a crystallizer, comprising a U-shaped frame, a first square tube is fixed to the bottom surface of the U-shaped frame, a connecting plate is fixed to the bottom surface of the first square tube, a stainless steel plate is detachably provided on the front side of the connecting plate, two second square tubes are fixed to the top surface of the first square tube, and angle irons are detachably provided inside the two second square tubes.

[0006] Preferably, a plurality of first threaded holes are opened on the front side of the connecting plate, and first hexagonal bolts are respectively threadedly connected in the plurality of first threaded holes. A plurality of second threaded holes are opened on the inner wall of the stainless steel plate, and the interiors of the plurality of second threaded holes are respectively threadedly connected to the threaded ends of the plurality of first hexagonal bolts.

[0007] Preferably, the thickness of the stainless steel plate is 0.2 mm.

[0008] Preferably, two third threaded holes are respectively provided on the inner sides of the two second square tubes, and second hexagonal bolts are respectively threadedly connected inside the two third threaded holes, and the two second hexagonal bolts respectively position the angle iron.

[0009] Preferably, a level is detachably provided on the top surface of the U-shaped frame.

[0010] Preferably, a mounting groove is provided on the top surface of the U-shaped frame, a mounting block is fixed on the bottom surface of the level, the mounting block is detachably arranged in the mounting groove, a fixing groove is provided on the front side of the mounting block, a fixing hole is provided on the front side of the outer wall of the U-shaped frame, a fixing column is slidably inserted into the fixing hole, the fixing column is slidably inserted in the fixing groove, a stopper is fixed on the front end of the fixing column, a spring is fixed on the front side of the outer wall of the U-shaped frame, the spring is wrapped around the fixing column, and the front end of the spring is fixedly connected to the rear side of the stopper.

[0011] Compared with the prior art, a device for measuring flow field distribution in a crystallizer using the above technical solution has the following beneficial effects:

[0012] 1. During use, it is helpful to simulate the casting flow field of molten steel in the crystallizer, and can prepare to measure the liquid surface flow field and fluctuation of the crystallizer surface under different specifications of immersion nozzles and casting speed conditions, adjust the specifications of the immersion nozzles and the optimal requirements of the casting speed, reduce the crystallizer liquid surface flow rate, stabilize the casting flow field, reduce the risk of slag rolling, and improve the quality of molten steel;

[0013] 2. During use, the first hexagonal bolt is convenient for the staff to disassemble and assemble the stainless steel plate, so that it is convenient for the staff to replace the stainless steel plate. The second hexagonal bolt is convenient for the staff to tighten and fix the angle iron, which is conducive to improving the stability of the angle iron, and at the same time, it is convenient for the staff to disassemble and assemble the angle iron, making disassembly and assembly more convenient. The level is convenient to measure the balance of the stainless steel plate after placement, so as to improve the accuracy of the measurement;

[0014] 3. During use, when the staff needs to install the level, they first pull the stopper. At this time, the spring is in a stretched state, causing the fixed column to move forward. Then, the level is placed on the top surface of the U-shaped frame, so that the mounting block is placed in the mounting groove. Then, the stopper is released, and the spring is used to automatically reset the fixed column, so that the fixed column is slidably inserted in the fixed groove to complete the installation of the level. Conversely, when the staff needs to disassemble the level, they first pull the stopper to move the fixed column forward and away from the inside of the fixed groove. Then, the level is disassembled, which makes it easier for the staff to disassemble and assemble the level, thereby facilitating the maintenance or replacement of the level. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of an embodiment.

[0016] Figure 2 It is an exploded schematic diagram of an embodiment.

[0017] Figure 3 Schematic diagram of the explosion at the connecting plate in the embodiment.

[0018] Figure 4 For example Figure 2 Enlarged schematic diagram at point A in the middle.

[0019] In the figure: 1. U-shaped frame; 2. first square tube; 3. connecting plate; 4. stainless steel plate; 5. second square tube; 6. angle iron; 7. first threaded hole; 8. first hexagonal bolt; 9. second threaded hole; 10. third threaded hole; 11. second hexagonal bolt; 12. level; 13. mounting groove; 14. mounting block; 15. fixing groove; 16. fixing hole; 17. fixing column; 18. stopper; 19. spring. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0021] like Figure 1-Figure 4 As shown, a device for measuring flow field distribution in a crystallizer comprises a U-shaped frame 1, a first square tube 2 is fixed to the bottom surface of the U-shaped frame 1, a connecting plate 3 is fixed to the bottom surface of the first square tube 2, a stainless steel plate 4 is detachably provided on the front side of the connecting plate 3, two second square tubes 5 are fixed to the top surface of the first square tube 2, and angle irons 6 are detachably provided inside the two second square tubes 5.

[0022] During use, the staff places the angle irons 6 on both sides flat on both sides of the continuous casting crystallizer in a horizontal state, and then inserts the stainless steel plate 4 into the crystallizer horizontally. The stainless steel plate 4 can be melted by molten steel to monitor the flow field of the crystallizer under different working conditions, ensure product quality, simulate the molten steel casting flow field in the crystallizer, adjust the specifications of the submerged nozzle and the optimal drawing speed requirements, and be able to prepare to measure the liquid surface flow field and fluctuation of the crystallizer surface under different specifications of submerged nozzles and drawing speed conditions, stabilize the crystallizer flow field and formulate the best drawing speed control specifications, reduce slag rolling, and improve the quality of molten steel. The measurement process of the device will not affect the on-site production.

[0023] like Figure 1-Figure 3 As shown, a plurality of first threaded holes 7 are opened on the front side of the connecting plate 3, and first hexagonal bolts 8 are respectively threadedly connected in the plurality of first threaded holes 7. A plurality of second threaded holes 9 are opened on the inner wall of the stainless steel plate 4, and the interiors of the plurality of second threaded holes 9 are respectively threadedly connected to the threaded ends of the plurality of first hexagonal bolts 8.

[0024] During use, the first hexagonal bolt 8 facilitates the staff to disassemble and assemble the stainless steel plate 4, thereby facilitating the staff to replace the stainless steel plate 4.

[0025] like Figure 1-Figure 4As shown, the thickness of the stainless steel plate 4 is 0.2 mm, and two third threaded holes 10 are respectively provided on the inner sides of the two second square tubes 5 . The interiors of the two third threaded holes 10 are respectively threadedly connected with second hexagonal bolts 11 , and the two second hexagonal bolts 11 respectively position the angle iron 6 .

[0026] During use, the second hexagonal bolt 11 facilitates the staff to tighten and fix the angle iron 6, which is beneficial to improving the stability of the angle iron 6. At the same time, it is convenient for the staff to disassemble and assemble the angle iron 6, making disassembly and assembly more convenient.

[0027] like Figure 1 , Figure 2 and Figure 4 As shown, a level 12 is detachably provided on the top surface of the U-shaped frame 1, a mounting groove 13 is provided on the top surface of the U-shaped frame 1, a mounting block 14 is fixed on the bottom surface of the level 12, the mounting block 14 is detachably provided in the mounting groove 13, a fixing groove 15 is provided on the front side of the mounting block 14, a fixing hole 16 is provided on the front side of the outer wall of the U-shaped frame 1, a fixing column 17 is slidably inserted in the fixing hole 16, the fixing column 17 is slidably inserted in the fixing groove 15, a stopper 18 is fixed to the front end of the fixing column 17, a spring 19 is fixed to the front side of the outer wall of the U-shaped frame 1, the spring 19 surrounds the fixing column 17, and the front end of the spring 19 is fixedly connected to the rear side of the stopper 18.

[0028] In use, the level 12 is used to measure the balance of the stainless steel plate 4 after placement, thereby improving the accuracy of the measurement. When the staff needs to install the level 12, first pull the block 18, at which time the spring 19 is in a stretched state, so that the fixed column 17 moves forward, and then the level 12 is placed on the top surface of the U-shaped frame 1, so that the mounting block 14 is placed in the mounting groove 13, and then the block 18 is released, and the fixed column 17 is automatically reset through the spring 19, so that the fixed column 17 is slidably inserted in the fixed groove 15, and the installation of the level 12 is completed; on the contrary, when the staff needs to disassemble the level 12, first pull the block 18, so that the fixed column 17 moves forward and away from the inside of the fixed groove 15, and then disassemble the level 12, which is conducive to the staff to disassemble and assemble the level 12, so that it is convenient for the staff to maintain or replace the level 12.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for measuring flow field distribution in a crystallizer, comprising a U-shaped frame (1), characterized in that: A first square tube (2) is fixed to the bottom surface of the U-shaped frame (1), a connecting plate (3) is fixed to the bottom surface of the first square tube (2), a stainless steel plate (4) is detachably provided on the front side of the connecting plate (3), two second square tubes (5) are fixed to the top surface of the first square tube (2), and angle irons (6) are detachably provided inside the two second square tubes (5).

2. The device for measuring flow field distribution in a crystallizer according to claim 1, characterized in that: The front side of the connecting plate (3) is provided with a plurality of first threaded holes (7), and first hexagonal bolts (8) are respectively threadedly connected in the plurality of first threaded holes (7). The inner wall of the stainless steel plate (4) is provided with a plurality of second threaded holes (9), and the interiors of the plurality of second threaded holes (9) are respectively threadedly connected to the threaded ends of the plurality of first hexagonal bolts (8).

3. The device for measuring flow field distribution in a crystallizer according to claim 2, characterized in that: The thickness of the stainless steel plate (4) is 0.2 mm.

4. The device for measuring flow field distribution in a crystallizer according to claim 3, characterized in that: Two third threaded holes (10) are respectively provided on the inner sides of the two second square tubes (5), and the interiors of the two third threaded holes (10) are respectively threadedly connected with second hexagonal bolts (11), and the two second hexagonal bolts (11) respectively position the angle iron (6).

5. The device for measuring flow field distribution in a crystallizer according to claim 1, characterized in that: A level (12) is detachably provided on the top surface of the U-shaped frame (1).

6. The device for measuring flow field distribution in a crystallizer according to claim 5, characterized in that: The top surface of the U-shaped frame (1) is provided with a mounting groove (13), the bottom surface of the level (12) is fixed with a mounting block (14), the mounting block (14) is detachably arranged in the mounting groove (13), the front side of the mounting block (14) is provided with a fixing groove (15), the front side of the outer wall of the U-shaped frame (1) is provided with a fixing hole (16), a fixing column (17) is slidably inserted in the interior of the fixing hole (16), the fixing column (17) is slidably inserted in the fixing groove (15), a stopper (18) is fixed at the front end of the fixing column (17), a spring (19) is fixed on the front side of the outer wall of the U-shaped frame (1), the spring (19) surrounds the fixing column (17), and the front end of the spring (19) is fixedly connected to the rear side of the stopper (18).

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