CN221538034U - Device for online measuring immersion depth of continuous casting immersion nozzle - Google Patents
Device for online measuring immersion depth of continuous casting immersion nozzle Download PDFInfo
- Publication number
- CN221538034U CN221538034U CN202322943345.8U CN202322943345U CN221538034U CN 221538034 U CN221538034 U CN 221538034U CN 202322943345 U CN202322943345 U CN 202322943345U CN 221538034 U CN221538034 U CN 221538034U
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- pipe body
- adjusting bolt
- continuous casting
- immersion
- immersion depth
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- 238000007654 immersion Methods 0.000 title claims abstract description 62
- 238000009749 continuous casting Methods 0.000 title claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 claims abstract description 37
- 239000002184 metal Substances 0.000 claims abstract description 37
- 238000005259 measurement Methods 0.000 claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims description 27
- 239000010959 steel Substances 0.000 claims description 27
- 238000005266 casting Methods 0.000 abstract description 6
- 239000000843 powder Substances 0.000 abstract description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 15
- 239000002893 slag Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 230000003014 reinforcing effect Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
The utility model discloses a device for measuring the immersion depth of a continuous casting immersion nozzle on line, which comprises a pipe body, wherein the pipe body is of a hollow tubular structure, a screw is arranged on the outer wall close to the lower port of the pipe body, an adjusting bolt is arranged in the screw, a metal wire penetrates into the pipe body, the adjusting bolt penetrates through the outer wall of the pipe body, the end face of the adjusting bolt is attached to the inner wall of the pipe body, and one section of the metal wire is arranged between the attaching faces of the adjusting bolt and the pipe body. The device can measure the immersion depth and the casting powder thickness of the immersion nozzle in real time, and the measurement error caused by the placement pose of the device is reduced by adjusting the adjusting bolt in the device, so that the measurement result is more accurate.
Description
Technical Field
The utility model belongs to the technical field of ferrous metallurgy technology, and particularly relates to a device for online measuring immersion depth of a continuous casting immersion nozzle.
Background
When the continuous casting process for steelmaking is produced, the molten steel exposed in the air between the tundish and the crystallizer is protected by using the submerged nozzle, so that the molten steel is prevented from being secondarily oxidized by the air, the molten steel in the tundish can be guided into the crystallizer, the molten steel is prevented from splashing, and the method is an important measure for ensuring the cleanliness of the molten steel and improving the quality of casting blanks.
With the development of process technology, the requirements of continuous casting billets of different steel grades and sections on the submerged nozzle are different, and the installation form is provided with an inner type and an outer type; straight cylinder type and porous type appear on the appearance shape; in order to improve the service cycle of the submerged nozzle, the submerged nozzle is also divided into a single rolling line and a double rolling line; the different structural forms make the immersion depth of the immersion nozzle during production difficult to accurately control, thereby influencing the cast steel quality. If the immersion depth is too deep (the immersion depth is more than 120 mm), the casting powder is most likely to erode the upper part of the water gap, and the aluminum carbon layer can lead to the expansion of the water gap, so that the water gap is eroded through, and the casting blank is scrapped; when the immersion depth is shallow (the immersion depth is less than 70 mm), the liquid level is turned over when the molten steel flows into the crystallizer; when the immersion depth is too shallow (the immersion depth is less than 40 mm), the protective slag can be strongly turned over, and serious safety accidents such as slag rolling, even steel leakage and the like can occur.
Therefore, the immersion depth of the immersion-controlled water gap is timely and accurately controlled, and the immersion depth is important to the quality of casting blanks. At present, the common mode for determining the immersion depth is to pre-design according to the distance from a tundish nozzle to the liquid level of a crystallizer, the measuring mode in the construction process is less, and the existing measuring device is sometimes required to be inclined or put in a side position due to space problems in the placing process, so that the metal is measured to be placed in the molten steel by mistake, the measuring accuracy is influenced, and the pouring effect is affected, so that the device capable of measuring the immersion depth of the continuous casting immersion nozzle on line is needed to be designed.
Disclosure of utility model
The utility model aims to provide a device for measuring the immersion depth of a continuous casting immersion nozzle on line, which can measure the immersion depth of the immersion nozzle in real time in the continuous casting production process, can regulate and control a measuring metal wire through an adjusting bolt and solves the problem of inaccurate measurement.
The technical scheme includes that the device for on-line measurement of continuous casting immersion nozzle immersion comprises a pipe body, wherein the pipe body is of a hollow tubular structure, a screw opening is formed in the outer wall close to a lower port of the pipe body, an adjusting bolt is arranged in the screw opening, a metal wire penetrates into the pipe body, the adjusting bolt penetrates through the outer wall of the pipe body, the end face of the adjusting bolt is attached to the inner wall of the pipe body, and one section of the metal wire is arranged between the attaching faces of the adjusting bolt and the pipe body.
The utility model is also characterized in that:
Reinforcing steel bars are arranged on the outer wall close to the upper port of the pipe body, one end of the steel bar is fixedly connected with the pipe body, and the other end is fixedly connected with the handle.
The setting direction of reinforcing bar is perpendicular with the body, and the handle setting direction is perpendicular with the reinforcing bar, and body, reinforcing bar and handle three are in the coplanar.
The inner diameter of the tube body is 2.5-3.5mm.
The diameter of the wire is 1.5-2mm.
The distance between the screw and the lower port of the pipe body is 50mm.
The beneficial effects of the utility model are as follows: the metal wire penetrates into the hollow pipe body, and the pipe body and the metal wire are fixed by using the adjusting bolt, so that the metal wire in the pipe body can be stretched into molten steel of the crystallizer by using the adjusting bolt during measurement, and the operation is simple, convenient and safe; after the measurement is completed, the immersion depth of the inlet nozzle and the thickness of the protective slag layer can be calculated according to the total length of the pipe body and the unmelted metal wire and the slag liquid attached to the metal wire, the measurement process is completed once, and the measurement result is real-time and accurate, so that the immersion depth and the thickness of the slag layer can be controlled and regulated on line according to the measurement result, and the casting quality of the steel billet is ensured.
On the other hand, the steel bars and the handles arranged at the upper end of the pipe body of the device enable the device to adapt to measurement requirements of different production environments, and operators can put the device into a proper position in a crystallizer through the handles for measurement, so that the accuracy and safety of measurement are further ensured.
Drawings
FIG. 1 is a schematic structural view of an apparatus for on-line measuring immersion depth of a continuous casting immersion nozzle according to the present utility model;
Fig. 2 is a diagram of the operation of the device of the utility model when performing measurements on-line.
In the figure: 1. reinforcing steel bars, a handle, a pipe body, an adjusting bolt, a metal wire, a slag layer, molten steel, a crystallizer, a submerged nozzle lower plate surface, a tundish lining and a tundish upper nozzle.
Detailed Description
The utility model will be described in detail below with reference to the drawings and the detailed description.
The device for online measuring the immersion depth of the continuous casting immersion nozzle shown in fig. 1 comprises a pipe body 3, wherein the pipe body 3 is hollow, the upper end and the lower end of the pipe body 3 are of an opening structure, a screw opening is formed in the outer wall close to the lower port of the pipe body 3, an adjusting bolt 4 is arranged in the screw opening, a metal wire 5 penetrates into the pipe body 3, the adjusting bolt 4 is in threaded connection with the pipe body 3, the outer wall of the pipe body 3 is penetrated from outside to inside, the end face of the adjusting bolt 4 is attached to the inner wall of the pipe body 3, and one section of the metal wire 5 penetrating into the pipe body 3 is arranged between the attaching faces of the adjusting bolt 4 and the pipe body 3, so that the metal wire 5 can be controlled to extend downwards or be fixed through loosening or fastening of the adjusting bolt 4.
The position near the upper port of the pipe body 3 is provided with a reinforcing steel bar 1 in the direction vertical to the pipe body 3, one end of the reinforcing steel bar 1 can be fixedly connected with the pipe body 3 in a welding mode, the other end of the reinforcing steel bar 1 can be fixedly connected with a handle 2 in a welding mode, the setting direction of the handle 2 is vertical to the reinforcing steel bar 1, and the pipe body 3, the reinforcing steel bar 1 and the handle 2 are arranged in the same plane so as to ensure convenient use during operation.
Fig. 2 shows the working state of the device according to the utility model when measuring on line in continuous casting production, the specific assembly method of the device according to the utility model when measuring is as follows: the distance between the lower plate surface 10 of the submerged nozzle and the upper edge of the copper plate of the crystallizer 8 is L1, a hollow reinforcing steel bar with the length smaller than L1 and the inner diameter of 2.5mm-3.5mm is taken as a pipe body 3, a screw is arranged at a position 50mm away from the lower port of the pipe body 3, an adjusting bolt 4 is arranged in the screw, a metal wire 5 with the diameter of about 1.5-2mm penetrates along the lower port of the hollow pipe body 3, and the metal wire 5 is generally selected from copper wires, iron wires and the like for measurement, and the metal wire 5 is pressed and fixed through the adjusting bolt 4.
In the normal pouring process, as shown in fig. 2, molten steel flows down from the tundish upper nozzle 12 and flows into the crystallizer 8 through the submerged nozzle 9, and the device of the utility model has the following specific operation steps when in use:
S1, measuring the position distance from the lower plate surface 10 of the submerged nozzle to molten steel discharged from the lower end of the nozzle in an off-line manner to be L2 (directly measuring the position from a straight barrel nozzle to the lower end of the nozzle, and measuring the position from the lower plate surface of the submerged nozzle to the upper edge of a side hole by a side hole nozzle);
s2, holding a device handle 2 by a measurer, hanging a pipe body 3 above the crystallizer, tightly attaching an upper port to a submerged nozzle lower plate surface 10, loosening an adjusting bolt 4, enabling a metal wire 5 in the pipe body 3 to extend downwards into molten steel 7 in a crystallizer 8, fastening the adjusting bolt 4, and staying for 3-5 seconds to ensure that the metal wire is melted in the molten steel;
S3, taking out the device, and preventing shaking in the taking-out process so as to prevent the head of the metal wire 5 from flowing with steel balls to influence the measurement accuracy;
S4, melting the metal wire 5 immersed in the molten steel 7, and measuring the thickness of the slag layer 6 according to the color of the unmelted metal wire 5 and the slag attached to the unmelted metal wire 5;
s5, measuring the distance from the upper port of the pipe body 3 to the lower end of the unmelted metal wire 5 to be L3, wherein the immersion depth L4=L2-L3 of the immersion nozzle 9; if the immersion depth L4 is not in the range of 70mm-120mm, the immersion depth of the immersion nozzle 9 can be adjusted on line;
S6, cutting the metal wire attached with the liquid slag or replacing the metal wire 5 when the length is insufficient for the next measurement.
The device for measuring the immersion depth of the continuous casting immersion nozzle on line can measure the immersion depth of the immersion nozzle and the thickness of the protective slag layer on line in the continuous casting production process, the device is firstly placed at a correct measuring position in the use process, then the measuring wire is accurately stretched into the crystallizer through the adjustment control of the adjusting bolt, and then the measuring wire is taken out, so that the measuring error caused by the placing pose is avoided, the measurement of the immersion depth and the thickness of the protective slag layer can be finished at one time, the operation is simple and convenient, the process parameters are adjusted on line according to the measuring result, and the production quality of continuous casting blanks is improved.
Example 1
The device for on-line measuring immersion depth of continuous casting immersion nozzle comprises a pipe body 3, wherein the pipe body 3 is of a hollow tubular structure, a screw is arranged on the outer wall close to the lower port of the pipe body 3, an adjusting bolt 4 is arranged in the screw, a metal wire 5 penetrates into the pipe body 3, the adjusting bolt 4 penetrates through the outer wall of the pipe body 3, the end face of the adjusting bolt 4 is attached to the inner wall of the pipe body 3, and one section of the metal wire 5 is arranged between the attaching faces of the adjusting bolt 4 and the pipe body 3. Wherein, the internal diameter of body 3 is 2.5mm, and the diameter of wire 5 is 1.5mm, like this wire 5 still remain some clearance between penetrating body 3 back and body 3 to wire 5 can better slide in body 3 when adjusting bolt 4 adjusts.
Example 2
The device for on-line measuring immersion depth of continuous casting immersion nozzle comprises a pipe body 3, wherein the pipe body 3 is of a hollow tubular structure, a screw is arranged on the outer wall close to the lower port of the pipe body 3, an adjusting bolt 4 is arranged in the screw, a metal wire 5 penetrates into the pipe body 3, the adjusting bolt 4 penetrates through the outer wall of the pipe body 3, the end face of the adjusting bolt 4 is attached to the inner wall of the pipe body 3, and one section of the metal wire 5 is arranged between the attaching faces of the adjusting bolt 4 and the pipe body 3. Wherein, the internal diameter of body 3 is 3mm, and the diameter of wire 5 is 1.75mm, and the distance of the position of seting up the screw on the body 3 apart from body 3 lower port is 50mm. On the other hand, set up reinforcing bar 1 on being close to the outer wall of the last port of body 3, reinforcing bar 1 one end and body 3 fixed connection, other end fixed connection handle 2, reinforcing bar 1's setting direction is perpendicular with body 3 simultaneously, and handle 2 setting direction is perpendicular with reinforcing bar 1, and body 3, reinforcing bar 1 and handle 2 three are in the coplanar.
The device of the utility model provided in embodiment 2 is added with the handle and the reinforcing steel bar part for supporting the handle, so that the device can adapt to measurement requirements of different production environments, and an operator can stretch the device to a proper position in the indirect device for measurement through the handle, thereby further ensuring measurement accuracy.
Example 3
The device for on-line measuring immersion depth of continuous casting immersion nozzle comprises a pipe body 3, wherein the pipe body 3 is of a hollow tubular structure, a screw is arranged on the outer wall close to the lower port of the pipe body 3, an adjusting bolt 4 is arranged in the screw, a metal wire 5 penetrates into the pipe body 3, the adjusting bolt 4 penetrates through the outer wall of the pipe body 3, the end face of the adjusting bolt 4 is attached to the inner wall of the pipe body 3, and one section of the metal wire 5 is arranged between the attaching faces of the adjusting bolt 4 and the pipe body 3. Wherein, the internal diameter of body 3 is 3.5mm, and the diameter of wire 5 is 2mm, and the distance of the position of seting up the screw on the body 3 apart from body 3 lower port is 50mm. The outer wall near the upper port of the pipe body 3 is provided with a reinforcing steel bar 1, one end of the reinforcing steel bar 1 is fixedly connected with the pipe body 3, the other end of the reinforcing steel bar is fixedly connected with a handle 2, the setting direction of the reinforcing steel bar 1 is vertical to the pipe body 3, the setting direction of the handle 2 is vertical to the reinforcing steel bar 1, and the pipe body 3, the reinforcing steel bar 1 and the handle 2 are in the same plane.
The device provided in embodiment 3 is characterized in that the inner diameter of the pipe body and the diameter of the metal wire are adjusted, so that the metal wire is not easy to bend during measurement, and the slag layer on the surface of molten steel can be better penetrated, and the device is more convenient to use and operate.
Claims (6)
1. The device for on-line measurement of immersion depth of continuous casting immersion nozzle is characterized by comprising a pipe body (3), wherein the pipe body (3) is of a hollow tubular structure, a screw opening is formed in the outer wall close to a lower port of the pipe body (3), an adjusting bolt (4) is arranged in the screw opening, a metal wire (5) penetrates into the pipe body (3), the adjusting bolt (4) penetrates through the outer wall of the pipe body (3), the end face of the adjusting bolt (4) is attached to the inner wall of the pipe body (3), and one section of the metal wire (5) is arranged between the attaching faces of the adjusting bolt (4) and the pipe body (3).
2. The device for online measurement of the immersion depth of the continuous casting immersion nozzle according to claim 1, wherein a steel bar (1) is arranged on the outer wall close to the upper port of the pipe body (3), one end of the steel bar (1) is fixedly connected with the pipe body (3), and the other end of the steel bar is fixedly connected with a handle (2).
3. The device for online measurement of immersion depth of continuous casting immersion nozzle according to claim 2, wherein the arrangement direction of the steel bar (1) is perpendicular to the pipe body (3), the arrangement direction of the handle (2) is perpendicular to the steel bar (1), and the pipe body (3), the steel bar (1) and the handle (2) are in the same plane.
4. A device for on-line measuring the immersion depth of a continuous casting submerged nozzle according to any one of claims 1-3, characterized in that the inner diameter of the tube body (3) is 2.5-3.5mm.
5. Device for on-line measurement of immersion depth of continuous casting immersion nozzle according to claim 4, characterized in that the wire (5) has a diameter of 1.5-2mm.
6. A device for on-line measuring the immersion depth of a continuous casting submerged nozzle according to any one of claims 1-3, characterized in that the distance between the screw and the lower port of the pipe body (3) is 50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322943345.8U CN221538034U (en) | 2023-10-31 | 2023-10-31 | Device for online measuring immersion depth of continuous casting immersion nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322943345.8U CN221538034U (en) | 2023-10-31 | 2023-10-31 | Device for online measuring immersion depth of continuous casting immersion nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221538034U true CN221538034U (en) | 2024-08-16 |
Family
ID=92258682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322943345.8U Active CN221538034U (en) | 2023-10-31 | 2023-10-31 | Device for online measuring immersion depth of continuous casting immersion nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221538034U (en) |
-
2023
- 2023-10-31 CN CN202322943345.8U patent/CN221538034U/en active Active
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