Long nozzle insertion depth detection device

Abstract

This utility model relates to the field of long nozzle depth detection technology, specifically a long nozzle insertion depth detection device, including a support frame and a depth detection plate movably sleeved on the inner wall of the support frame, and a mating sleeve movably sleeved on the outer top surface of the support frame and the depth detection plate. A swing closing plate is sway-connected to the top surface of the support frame and at its two side edges. A fitting plate is provided on the bottom surface of the swing closing plate and on the inner wall of the support frame. Water-cooled hydraulic cylinders are fixedly installed on the two side surfaces of the support frame. After the depth detection plate is placed inside the support frame, the descending depth detection plate will press against the fitting plate on the bottom surface of the swing closing plate, causing the swing closing plate to move towards the depth detection plate. This causes the inner wall of the swing closing plate to engage with the two side surfaces of the depth detection plate, thus compressing and limiting the position of the depth detection plate.

Description

Technical Field

[0001] This utility model relates to the field of long water inlet depth detection technology, and in particular to a long water inlet insertion depth detection device. Background Technology

[0002] The tundish serves as a buffer between the ladle and the crystallizer, regulating the flow rate of molten steel and maintaining a stable liquid level. Since multiple heats of molten steel are typically poured continuously during production, frequent ladle changes and restarts of the pouring process are necessary. During the initial pouring, the rotary table moves the ladle to the pouring position, and a robotic arm places the long nozzle onto the ladle's sliding nozzle. The sliding nozzle is then opened to allow molten steel to flow into the tundish. If no molten steel flows out, the long nozzle is removed, and oxygen is introduced. Near the end of the pouring process, a manual inspection or slag detection system checks whether the molten steel has reached the slag layer. If slag is detected, the sliding nozzle is closed, and the long nozzle is removed for ladle replacement.

[0003] A patent with publication number CN119407116A discloses a method and device for identifying molten steel at the end of a long nozzle. This device identifies molten steel to determine when to activate the automatic tundish level control program. During production, images of the long nozzle location above the tundish are captured and uploaded in real-time. A deep learning object detection algorithm is used to detect the presence of a long nozzle in the image. Once a long nozzle is detected, image processing technology is used to extract the molten steel region at the end of the long nozzle and identify whether the molten steel is flowing out normally. When normal molten steel flow is detected, the automatic tundish level control program is activated. This method can automatically determine and activate the automatic tundish level control program while reducing the workload of operators.

[0004] Baogang currently injects molten steel, while Shagang lacks a ladle level monitoring device, making it impossible to quantify the ladle level. A depth gauge is installed on the surface of the Baogang ladle, secured with screws. Each time molten steel is poured, the high temperature inside the molten steel dissipates directly, causing structural deformation, material degradation, and measurement inaccuracies in the gauge. Metal gauges, in particular, rapidly absorb heat from the molten steel, leading to thermal fatigue cracks and eventual breakage after natural cooling. High temperatures also cause discoloration and peeling, requiring replacement. Furthermore, the screws expand under the high temperature of the molten steel and shrink at room temperature, leading to loosening and detachment, making effective fixation difficult later. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the problems in the prior art where high temperature causes structural deformation, material performance deterioration and measurement inaccuracy of the scale, and the screws that fix the scale will expand at high temperature of molten steel and shrink at room temperature. Under thermal expansion and contraction, the screws will loosen and fall off, making it difficult to fix and replace them effectively in the future.

[0006] To solve the above-mentioned technical problems, this utility model provides a long nozzle insertion depth detection device, including a support frame and a depth detection plate movably sleeved on the inner wall of the support frame, a docking sleeve movably sleeved on the top outer surface of the support frame and the depth detection plate, a swing closing plate swingably connected to the top surface of the support frame and located at the two side edges, a fitting plate is provided on the bottom surface of the swing closing plate and located on the inner wall of the support frame, water-cooled hydraulic cylinders are fixedly installed on the two side surfaces of the support frame, a swing arm plate swingably connected to the bottom surface of the support frame, and the output end of the water-cooled hydraulic cylinder movably overlaps the top surface of the swing arm plate.

[0007] In one embodiment of the present invention, a silicone pad is fixedly connected to one end of the swing arm plate, and the outer surface of the silicone pad is movably attached to the bottom surface of the depth detection plate.

[0008] In one embodiment of this utility model, a bolt is provided on the inner wall of the support frame, and the outer surface of the depth detection plate is movably sleeved on the inner wall of the bolt.

[0009] In one embodiment of this utility model, a limiting rod is fixedly connected to the top two side edges of the support frame, and the bottom surface of the swing closing plate is movably sleeved on the outer surface of the limiting rod.

[0010] In one embodiment of the present invention, bolts are provided on the back of the support frame, and a shim block that movably overlaps the outer surface of the depth detection plate is fixedly connected to the inner wall of the support frame and located at the top edge.

[0011] In one embodiment of the present invention, an elastic strip is fixedly connected to the inner wall of the swing closing plate, a fitting and pressing plate is fixedly connected to the outer surface of the elastic strip, and a mating groove is formed on the top outer surface of the swing closing plate.

[0012] In one embodiment of the present invention, a bonding plate is fixedly connected to the bottom surface of the swing closing plate, and the outer surface of the bonding pressing plate is movably overlapped with the two side edges of the depth detection plate.

[0013] In one embodiment of the present invention, a support pad is provided on the top inner wall of the docking sleeve, a blower is fixedly installed on the top outer surface of the docking sleeve, a cavity is provided between the support pad and the docking sleeve, and snap-fit ​​limiting strips that are movably sleeved on the inner wall of the docking groove are provided on both inner walls of the docking sleeve.

[0014] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0015] The long nozzle insertion depth detection device of this utility model, after the depth detection plate is placed inside the support frame, the descending depth detection plate will press the bonding plate on the bottom surface of the swing closing plate, and cause the swing closing plate to move towards the depth detection plate, and cause the inner wall of the swing closing plate to engage with the two sides of the depth detection plate, and the position of the depth detection plate is compressed and limited. At this time, the bottom surface of the docking sleeve is then fitted onto the top outer surface of the swing closing plate, thereby limiting the position of the two swing closing plates and firmly limiting the depth detection plate to the inner wall of the swing closing plate.

[0016] In the long nozzle insertion depth detection device described in this utility model, when the depth detection plate is replaced later, the docking sleeve is removed from the surface of the swing closing plate. At this time, the water-cooled hydraulic cylinder presses down the swing arm plate, and the other end of the swing arm plate pushes the depth detection plate upward. The moved depth detection plate will reduce the adhesion between the inner walls of the swing closing plate, thereby allowing the swing closing plate to expand outward, and thus the depth detection plate can be replaced a second time.

[0017] The long nozzle insertion depth detection device of this utility model, after the depth detection plate is placed inside the support frame, is supported by a shim block on the back of the depth detection plate, leaving a certain cavity gap between the depth detection plate and the inner wall of the support frame. At this time, air is injected into the interior of the docking sleeve by a blower on the top surface of the docking sleeve. When the air flows, it will flow through the gap between the depth detection plate and the support frame. The flow of gas will blow away the high temperature of the molten steel accumulated around the depth detection plate, thereby reducing the high temperature around the depth detection plate and extending the service life of the depth detection plate. Attached Figure Description

[0018] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a perspective view of the back of the support frame in this utility model;

[0021] Figure 3 This is a three-dimensional sectional view of the support frame in this utility model.

[0022] Figure 4 This is a sectional perspective view of the water-cooled hydraulic cylinder in this utility model;

[0023] Figure 5 This is a three-dimensional view of the support frame in this utility model.

[0024] Figure 6 This is a sectional perspective view of the swing closing plate in this utility model;

[0025] Figure 7 This is a three-dimensional cross-sectional view of the docking sleeve in this utility model;

[0026] Explanation of reference numerals in the accompanying drawings: 11. Support frame; 111. Bolt; 112. Water-cooled hydraulic cylinder; 113. Swing arm plate; 114. Silicone pad; 115. Limiting rod; 116. Swing closing plate; 117. Docking groove; 118. Elastic strip; 119. Adhesive pressing plate; 1110. Adhesive plate; 1111. Raising block; 12. Depth detection plate; 13. Docking sleeve; 131. Support pad; 132. Cavity; 133. Blower; 134. Snap-fit ​​limiting strip. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0028] Reference Figure 1 - Figure 7 As shown, the long nozzle insertion depth detection device of this utility model includes a support frame 11 and a depth detection plate 12 movably sleeved on the inner wall of the support frame 11, a docking sleeve 13 movably sleeved on the top outer surface of the support frame 11 and the depth detection plate 12, a swing closing plate 116 swingably connected to the top surface of the support frame 11 and located at the two side edges, a bonding plate 1110 is provided on the bottom surface of the swing closing plate 116 and located on the inner wall of the support frame 11, a water-cooled hydraulic cylinder 112 is fixedly installed on the two side surfaces of the support frame 11, a swing arm plate 113 swingably connected to the bottom surface of the support frame 11, and the output end of the water-cooled hydraulic cylinder 112 movably overlaps the top surface of the swing arm plate 113.

[0029] After the depth detection plate 12 is placed inside the support frame 11, the descending depth detection plate 12 will press the bonding plate 1110 on the bottom surface of the swing closing plate 116, causing the swing closing plate 116 to move towards the depth detection plate 12, and causing the inner wall of the swing closing plate 116 to engage with the two side surfaces of the depth detection plate 12, thus pressing and limiting the position of the depth detection plate 12. At this time, the bottom surface of the docking sleeve 13 is then fitted onto the top outer surface of the swing closing plate 116, thereby limiting the position of the two swing closing plates 116 and firmly limiting the depth detection plate 12 to the inner wall of the swing closing plate 116.

[0030] When replacing the depth detection plate 12 later, the docking sleeve 13 is removed from the surface of the swing closing plate 116. At this time, the water-cooled hydraulic cylinder 112 is used to press down the swing arm plate 113, and the other end of the swing arm plate 113 pushes the depth detection plate 12 upward. The moved depth detection plate 12 will reduce the adhesion between the inner walls of the swing closing plate 116, thereby allowing the swing closing plate 116 to expand outward, and thus the depth detection plate 12 is replaced a second time.

[0031] During the casting process, the main operator controls the position of the tundish between numbers 1 and 3 based on the liquid level in the tundish, which ensures that the insertion depth of the long nozzle is 200-400mm, meeting the process requirements. In addition, when the machine operator monitors the crystallizer at the edge of the crystallizer cover, he can also determine the insertion depth of the long nozzle based on the position of the main operator. If there is any abnormality, he can also remind the main operator in time, thus playing an auxiliary role in confirmation.

[0032] Reference Figure 1 - Figure 5 and Figure 7 As shown, in one embodiment of the present invention, a silicone pad 114 is fixedly connected to one end of the swing arm plate 113. The outer surface of the silicone pad 114 is movably overlapped with the bottom surface of the depth detection plate 12. A bolt 111 is provided on the inner wall of the support frame 11. The outer surface of the depth detection plate 12 is movably sleeved on the inner wall of the bolt 111. A bolt 111 is provided on the back of the support frame 11. A shim 1111 is fixedly connected to the inner wall of the support frame 11 and located at the top edge, and is movably overlapped with the outer surface of the depth detection plate 12. A support pad 131 is provided on the top inner wall of the docking sleeve 13. A blower 133 is fixedly installed on the top outer surface of the docking sleeve 13. A cavity 132 is provided between the support pad 131 and the docking sleeve 13. A snap-fit ​​limiting strip 134 is provided on the inner walls of both sides of the docking sleeve 13 and is movably sleeved on the inner wall of the docking groove 117.

[0033] After the depth detection plate 12 is placed inside the support frame 11, the back of the depth detection plate 12 is supported by the shim block 1111, leaving a certain cavity gap between the depth detection plate 12 and the inner wall of the support frame 11. At this time, the blower 133 on the top surface of the docking sleeve 13 injects air into the interior of the docking sleeve 13. When the air flows, it will flow through the gap between the depth detection plate 12 and the support frame 11. The flow of air will blow away the high temperature of the molten steel accumulated around the depth detection plate 12, thereby reducing the high temperature around the depth detection plate 12 and extending the service life of the depth detection plate 12.

[0034] Reference Figure 1 - Figure 6 As shown, in one embodiment of the present invention, a limiting rod 115 is fixedly connected to the top two side edges of the support frame 11, the bottom surface of the swing closing plate 116 is movably sleeved on the outer surface of the limiting rod 115, an elastic strip 118 is fixedly connected to the inner side wall of the swing closing plate 116, an adhesive pressing plate 119 is fixedly connected to the outer surface of the elastic strip 118, a mating groove 117 is opened on the top outer surface of the swing closing plate 116, an adhesive plate 1110 is fixedly connected to the bottom surface of the swing closing plate 116, and the outer surface of the adhesive pressing plate 119 is movably overlapped on the two side edges of the depth detection plate 12.

[0035] After the swing closing plate 116 is sleeved on both sides of the depth detection plate 12, under the constraint of the mating sleeve 13, the swing closing plate 116 is squeezed and constrained. Then, the fitting compression plate 119 on the outer surface of the elastic strip 118 is pressed and attached to the outer surface of the depth detection plate 12. At this time, the fitting compression plate 119 increases the friction and anti-slip force between the plate and the depth detection plate 12. Then, the elastic strip 118 is deformed during the compression. The elastic strip 118 can be used to snap together scales of different sizes by utilizing its contractility.

[0036] Working principle: After the depth detection plate 12 is placed inside the support frame 11, the descending depth detection plate 12 will press the bonding plate 1110 on the bottom surface of the swing closing plate 116, causing the swing closing plate 116 to move towards the depth detection plate 12, and the inner wall of the swing closing plate 116 to engage with the two sides of the depth detection plate 12, thus pressing and limiting the position of the depth detection plate 12. At this time, the bottom surface of the docking sleeve 13 is then fitted onto the top outer surface of the swing closing plate 116, thereby limiting the position of the two swing closing plates 116 and firmly limiting the depth detection plate 12 to the inner wall of the swing closing plate 116.

[0037] After the swing closing plate 116 is sleeved on both sides of the depth detection plate 12, under the limitation of the mating sleeve 13, the swing closing plate 116 is squeezed and limited, and then the fitting compression plate 119 on the outer surface of the elastic strip 118 is squeezed and attached to the outer surface of the depth detection plate 12. At this time, the fitting compression plate 119 increases the friction and anti-slip force between the plate and the depth detection plate 12. Then, the elastic strip 118 is deformed during the compression. The elastic strip 118 can be used to snap together scales of different sizes by utilizing its shrinkage.

[0038] After the depth detection plate 12 is placed inside the support frame 11, the back of the depth detection plate 12 is supported by the shim block 1111, and a certain cavity gap is left between the depth detection plate 12 and the inner wall of the support frame 11. At this time, the blower 133 on the top surface of the docking sleeve 13 injects air into the interior of the docking sleeve 13. When the air flows, it will flow through the gap between the depth detection plate 12 and the support frame 11. The flow of gas will blow away the high temperature of the molten steel accumulated around the depth detection plate 12, thereby reducing the high temperature around the depth detection plate 12 and extending the service life of the depth detection plate 12.

[0039] When replacing the depth detection plate 12 later, the docking sleeve 13 is removed from the surface of the swing closing plate 116. At this time, the water-cooled hydraulic cylinder 112 is used to press down the swing arm plate 113, and the other end of the swing arm plate 113 pushes the depth detection plate 12 upward. The moved depth detection plate 12 will reduce the adhesion between the inner walls of the swing closing plate 116, thereby allowing the swing closing plate 116 to expand outward, and thus the depth detection plate 12 can be replaced a second time.

[0040] Obviously, the above embodiments are merely illustrative examples for clarity and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A long nozzle insertion depth detection device, comprising a support frame (11) and a depth detection plate (12) movably sleeved on the inner side wall surface of the support frame (11), and a butt joint sleeve shell (13) movably sleeved on the outer side surface of the top of the support frame (11) and the depth detection plate (12), characterized in that: A swing closing plate (116) is sway-connected to the top surface of the support frame (11) and at the two side edges. A fitting plate (1110) is provided on the bottom surface of the swing closing plate (116) and on the inner wall of the support frame (11). A water-cooled hydraulic cylinder (112) is fixedly installed on both side surfaces of the support frame (11). A swing arm plate (113) is sway-connected to the bottom surface of the support frame (11). The output end of the water-cooled hydraulic cylinder (112) is movably connected to the top surface of the swing arm plate (113).

2. The shroud insertion depth detection device according to claim 1, characterized by: A silicone pad (114) is fixedly connected to one end of the swing arm plate (113), and the outer surface of the silicone pad (114) is movably attached to the bottom surface of the depth detection plate (12).

3. The shroud insertion depth detection apparatus according to claim 2, characterized by: Bolts (111) are provided on the inner wall of the support frame (11), and the outer surface of the depth detection plate (12) is movably sleeved on the inner wall of the bolts (111).

4. The shroud insertion depth detection apparatus according to claim 3, characterized by: Limiting rods (115) are fixedly connected to the top two sides of the support frame (11), and the bottom surface of the swing closing plate (116) is movably sleeved on the outer surface of the limiting rods (115).

5. The shroud insertion depth detection apparatus according to claim 4, characterized by: Bolts (111) are provided on the back of the support frame (11), and a pad block (1111) is fixedly connected to the inner wall of the support frame (11) and located at the top edge, which is movably overlapped on the outer surface of the depth detection plate (12).

6. The shroud insertion depth detection apparatus according to claim 5, characterized by: An elastic strip (118) is fixedly connected to the inner wall of the swing closing plate (116), and a fitting and pressing plate (119) is fixedly connected to the outer surface of the elastic strip (118). A mating groove (117) is provided on the top outer surface of the swing closing plate (116).

7. The shroud insertion depth detection apparatus of claim 6, wherein: A bonding plate (1110) is fixedly connected to the bottom surface of the swing closing plate (116), and the outer surface of the bonding pressing plate (119) is movably overlapped on both sides of the depth detection plate (12).

8. The shroud insertion depth detection apparatus of claim 1, wherein: A support pad (131) is provided on the top inner wall of the docking sleeve (13), and a blower (133) is fixedly installed on the top outer surface of the docking sleeve (13). A cavity (132) is provided between the support pad (131) and the docking sleeve (13). A snap-fit ​​limiting strip (134) is provided on both inner walls of the docking sleeve (13) and is movably fitted onto the inner wall of the docking groove (117).

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