Smelting furnace for on-line detection of molten steel temperature based on spectral analysis

Abstract

The utility model discloses a kind of smelting furnaces based on spectral analysis on-line detection molten steel temperature, it is related to smelting furnace temperature detection technical field, its technical key points include furnace body, optical fiber pedestal and focal length adjusting cylinder, the top of furnace body is fixedly installed with lengthening cylinder, the top of lengthening cylinder is provided with lens mounting port, the inside of lens mounting port is provided with lens, the focal length adjusting cylinder includes the outer tube fixedly installed in the top of lengthening cylinder and the inner tube slidingly installed in the upper end of outer tube, the optical fiber pedestal is fixedly installed in the upper end of inner tube, the both sides of inner tube are fixedly connected with first connecting block, the outside of outer tube is fixedly connected with second connecting block, and the bottom of one of first connecting block is rotatably connected with screw rod, and the lower end of screw rod is threadedly connected with one of second connecting block. Technical effect is by setting focal length adjusting cylinder, the quick adjustment of lens focal length can be realized, and adjustment is more flexible.

Description

Technical Field

[0001] This utility model relates to the field of furnace temperature detection technology, specifically a furnace for online detection of molten steel temperature based on spectral analysis. Background Technology

[0002] Traditional metal smelting furnaces typically employ contact temperature measurement methods, such as thermocouples and resistance temperature detectors (RTDs). However, contact temperature measurement methods require contact with the object being measured at high temperatures, which can easily damage the sensor and cause measurement errors. Furthermore, contact temperature measurement methods can only measure localized temperatures and cannot obtain the temperature distribution across the entire smelting area. Additionally, the sensors are susceptible to corrosion from molten slag and metal during the smelting process, resulting in a short sensor lifespan.

[0003] The existing Chinese patent with publication number CN222671260U discloses a metal smelting simulation furnace for spectral temperature measurement modeling, including an optical fiber focal length adjustment device at the top, an industrial environment simulation device in the middle, and a heating and smelting device at the bottom. The optical fiber focal length adjustment device uses optical fiber to receive spectral information and adopts a stacked module to realize lens focal length adjustment. Specifically, it includes an optical fiber base, an optical fiber chamber at the bottom of the optical fiber base, multiple stacked blocks below the optical fiber chamber, a lens assembly below the multiple stacked blocks, and an optical fiber receiver connected to the top of the optical fiber base, which is connected to a spectral analyzer.

[0004] Regarding the aforementioned related technologies, the inventors have discovered at least the following problems: when adjusting the focal length of the lens, the aforementioned technologies require adding or removing stacked blocks, which is very cumbersome and not flexible enough.

[0005] Therefore, we propose a smelting furnace for online detection of molten steel temperature based on spectral analysis. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides a smelting furnace for online detection of molten steel temperature based on spectral analysis. This solves the problem that the above technologies require adding or removing stacking blocks when adjusting the lens focal length, which is very cumbersome and lacks flexibility.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a smelting furnace for online detection of molten steel temperature based on spectral analysis, comprising a furnace body, an optical fiber base and a focal length adjustment cylinder, wherein the interior of the furnace body is provided with quartz glass, an extension cylinder is fixedly installed on the top of the furnace body, a lens mounting port is provided on the top of the extension cylinder, and a lens is provided inside the lens mounting port;

[0010] The focal length adjustment cylinder includes an outer cylinder fixedly installed on the top of the extension cylinder and an inner cylinder slidably installed on the upper end of the outer cylinder. The fiber optic base is fixedly installed on the upper end of the inner cylinder. First connecting blocks are fixedly connected to both sides of the inner cylinder, and second connecting blocks are fixedly connected to the outer side of the outer cylinder. A screw is rotatably connected to the bottom of one of the first connecting blocks, and the lower end of the screw is threadedly connected to one of the second connecting blocks.

[0011] By adopting the above technical solution, when it is necessary to adjust the lens focal length, simply rotate the screw to move the screw up and down along the second connecting block. The screw drives the first connecting block to move, which in turn drives the inner cylinder to rise and fall along the outer cylinder. This allows for adjustment of the total length of the focal length adjustment cylinder, enabling rapid and flexible adjustment of the lens focal length.

[0012] Preferably, a lens retaining ring is fixedly connected to the inner wall at the lower end of the outer cylinder.

[0013] By adopting the above technical solution, the lens can be pressed and fixed.

[0014] Preferably, a bearing is fixedly installed inside one of the first connecting blocks, and the screw is rotatably connected to the first connecting block through the bearing.

[0015] By adopting the above technical solution, the screw can rotate stably.

[0016] Preferably, a guide rod is fixedly connected to the bottom of another first connecting block, and the lower end of the guide rod slides through another second connecting block.

[0017] By adopting the above technical solution, the inner cylinder can be guided.

[0018] Preferably, one of the second connecting blocks has a threaded hole inside that is compatible with the screw, and the screw is threadedly connected to the second connecting block through the threaded hole.

[0019] By adopting the above technical solution, when the screw rotates, the screw moves up and down along the second connecting block through the cooperation between the screw and the threaded hole.

[0020] Preferably, a knob is fixedly fitted onto the surface of the screw.

[0021] By adopting the above technical solution, the knob can be turned when the screw needs to be rotated, thus facilitating the rotation of the screw.

[0022] Preferably, the outer wall of the inner cylinder is provided with scale lines.

[0023] By adopting the above technical solution, when adjusting the focal length adjustment cylinder, the focal length of the lens can be accurately determined by observing the scale value corresponding to the scale line on the upper end of the outer cylinder.

[0024] (III) Beneficial Effects

[0025] Compared with the prior art, the present invention provides a method with the following beneficial effects:

[0026] 1. This utility model, by setting a focal length adjustment cylinder, allows for easy adjustment of the lens focal length by simply rotating a screw. The screw, through its engagement with a threaded hole, moves up and down along the second connecting block. This movement of the screw drives the first connecting block, which in turn causes the inner cylinder to rise and fall along the outer cylinder. This allows for adjustment of the total length of the focal length adjustment cylinder, enabling rapid and flexible adjustment of the lens focal length.

[0027] 2. This utility model features a knob that allows for easy rotation of the screw when rotation is required. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the focal length adjusting cylinder of this utility model;

[0030] Figure 3 This is a schematic diagram of the internal structure of the focus adjustment cylinder of this utility model;

[0031] Figure 4 This is a schematic diagram of the inner cylinder of this utility model.

[0032] In the picture:

[0033] 1. Furnace body; 11. Extended cylinder; 12. Lens mounting port; 13. Lens;

[0034] 2. Fiber optic base;

[0035] 3. Focus adjustment cylinder; 31. Outer cylinder; 32. Inner cylinder; 33. First connecting block; 34. Second connecting block; 35. Screw; 36. Lens pressure ring; 37. Bearing; 38. Guide rod; 39. Threaded hole; 310. Knob; 311. Scale line. Detailed Implementation

[0036] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0037] This utility model provides a technical solution:

[0038] Please see Figures 1-4 A smelting furnace for online detection of molten steel temperature based on spectral analysis includes a furnace body 1, an optical fiber base 2, and a focus adjustment cylinder 3. The interior of the furnace body 1 is lined with quartz glass, and an extension cylinder 11 is fixedly installed on the top of the furnace body 1. The top of the extension cylinder 11 is provided with a lens mounting port 12, and a lens 13 is installed inside the lens mounting port 12. By setting up the quartz glass, the optical fiber base 2, and the lens 13, the spectral information of molten steel during smelting is focused onto the optical fiber receiver by the lens 13 through the quartz glass and the flue gas environment inside the furnace body 1. Then, it is transmitted to a spectral analyzer for analysis and processing to establish a temperature measurement model and thus realize the measurement of the smelting furnace temperature. This technology has been disclosed in prior art document CN222671260U, and will not be described in detail in this application.

[0039] Specifically, the focus adjustment cylinder 3 includes an outer cylinder 31 fixedly installed on the top of the extension cylinder 11 and an inner cylinder 32 slidably installed on the upper end of the outer cylinder 31. A lens retaining ring 36 is fixedly connected to the inner wall at the lower end of the outer cylinder 31. The fiber optic base 2 is fixedly installed on the upper end of the inner cylinder 32. First connecting blocks 33 are fixedly connected to both sides of the inner cylinder 32, and second connecting blocks 34 are fixedly connected to the outer side of the outer cylinder 31. A screw 35 is rotatably connected to the bottom of one of the first connecting blocks 33. The screw 35 is arranged parallel to the inner cylinder 32. The lower end of screw 35 is threadedly connected to one of the second connecting blocks 34. A bearing 37 is fixedly installed inside one of the first connecting blocks 33. Screw 35 is rotatably connected to the first connecting block 33 through the bearing 37. A threaded hole 39 adapted to screw 35 is opened inside one of the second connecting blocks 34. Screw 35 is threadedly connected to the second connecting block 34 through the threaded hole 39. A guide rod 38 is fixedly connected to the bottom of the other first connecting block 33. The lower end of the guide rod 38 slides through the other second connecting block 34. By setting up the focal length adjustment cylinder 3, when the lens focal length needs to be adjusted, only screw 35 needs to be rotated. Through the cooperation of screw 35 and threaded hole 39, screw 35 moves up and down along the second connecting block 34. Screw 35 drives the first connecting block 33 to move, so that the first connecting block 33 drives the inner cylinder 32 to rise and fall along the outer cylinder 31. Thus, the total length of the focal length adjustment cylinder 3 can be adjusted, realizing rapid adjustment of the lens focal length, and the adjustment is more flexible.

[0040] Furthermore, a knob 310 is fixedly mounted on the surface of the screw 35. By setting the knob 310, the screw 35 can be rotated when it is necessary to rotate, thereby facilitating the rotation of the screw 35.

[0041] Furthermore, a scale line 311 is provided on the outer wall of the inner cylinder 32. By setting the scale line 311, when adjusting the focal length adjustment cylinder 3, the focal length of the lens can be accurately determined by observing the scale value corresponding to the scale line 311 on the upper end of the outer cylinder 31.

[0042] In practical use, the working principle of this utility model is as follows:

[0043] First, when the lens focal length needs to be adjusted, simply turn the knob 310 to make the knob 310 drive the screw 35 to rotate. Through the cooperation of the screw 35 and the threaded hole 39, the screw 35 moves up and down along the second connecting block 34. The screw 35 drives the first connecting block 33 to move, and the first connecting block 33 drives the inner cylinder 32 to rise and fall along the outer cylinder 31, thereby adjusting the total length of the focal length adjustment cylinder 3 and realizing the rapid adjustment of the lens focal length.

[0044] To accurately determine the focal length of the lens, a scale line 311 is set. When adjusting the focal length adjustment cylinder 3, the focal length of the lens can be determined by observing the scale value corresponding to the scale line 311 on the upper end of the outer cylinder 31.

[0045] In summary, this smelting furnace for online detection of molten steel temperature based on spectral analysis can achieve rapid and flexible adjustment of the lens focal length by setting the focal length adjustment cylinder 3.

[0046] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A smelting furnace for online detection of molten steel temperature based on spectral analysis, comprising a furnace body (1), an optical fiber base (2), and a focus adjustment cylinder (3), characterized in that: The furnace body (1) is provided with quartz glass inside, and an extension tube (11) is fixedly installed on the top of the furnace body (1). A lens mounting port (12) is provided on the top of the extension tube (11), and a lens (13) is provided inside the lens mounting port (12). The focal length adjustment cylinder (3) includes an outer cylinder (31) fixedly installed on the top of the extension cylinder (11) and an inner cylinder (32) slidably installed on the upper end of the outer cylinder (31). The fiber optic base (2) is fixedly installed on the upper end of the inner cylinder (32). A first connecting block (33) is fixedly connected to both sides of the inner cylinder (32). A second connecting block (34) is fixedly connected to the outer side of the outer cylinder (31). A screw (35) is rotatably connected to the bottom of one of the first connecting blocks (33). The lower end of the screw (35) is threadedly connected to one of the second connecting blocks (34).

2. The smelting furnace for online detection of molten steel temperature based on spectral analysis according to claim 1, characterized in that: A lens retaining ring (36) is fixedly connected to the inner wall at the lower end of the outer cylinder (31).

3. The smelting furnace for online detection of molten steel temperature based on spectral analysis according to claim 1, characterized in that: One of the first connecting blocks (33) has a bearing (37) fixedly installed inside, and the screw (35) is rotatably connected to the first connecting block (33) through the bearing (37).

4. A smelting furnace for online detection of molten steel temperature based on spectral analysis according to claim 1, characterized in that: A guide rod (38) is fixedly connected to the bottom of another first connecting block (33), and the lower end of the guide rod (38) slides through another second connecting block (34).

5. A smelting furnace for online detection of molten steel temperature based on spectral analysis according to claim 1, characterized in that: One of the second connecting blocks (34) has a threaded hole (39) inside that is compatible with the screw (35), and the screw (35) is threadedly connected to the second connecting block (34) through the threaded hole (39).

6. A smelting furnace for online detection of molten steel temperature based on spectral analysis according to claim 1, characterized in that: A knob (310) is fixedly mounted on the surface of the screw (35).

7. A smelting furnace for online detection of molten steel temperature based on spectral analysis according to claim 1, characterized in that: The outer wall of the inner cylinder (32) is provided with scale lines (311).

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