Converter shell

Abstract

The utility model relates to a converter shell. The converter shell comprises a converter shell body and a marking line, wherein the furnace shell body comprises a furnace opening, a furnace stack and a furnace bottom; the identification line at least covers an unshielded area of the furnace body; the identification lines comprise a plurality of scale lines arranged along a first direction and / or a plurality of scale lines arranged along a second direction; the scale marks in the same direction are uniformly distributed in the unshielded area; the first direction is perpendicular to the second direction. Thus, a coordinate identification line is established on the converter body of the converter shell through the identification line, the corresponding position of a converter lining thickness abnormal point measured by thickness measurement scanning equipment on the converter shell is analyzed and mastered according to the identification line, the abnormal point is found in time, and converter protection measures are taken immediately. And accidents such as excessive erosion, furnace shell redness, furnace penetration and the like of the thickness of the furnace lining are avoided. The device is simple in design mode, convenient to operate, visual and practical, the production efficiency is improved, and furnace lining safety accidents are reduced.

Description

Technical Field

[0001] This utility model relates to the field of furnace shell thickness measurement, and in particular to a converter furnace shell. Background Technology

[0002] The existing converter shell has no markings on its surface, and steel mills generally use laser thickness gauges to scan and measure the thickness of the furnace lining. Since this measurement method needs to be carried out when the converter is not in production, it is not usually used frequently. Therefore, for some points where the laser scan finds abnormalities in the thickness of the furnace lining, it is necessary to observe and monitor them on the surface of the furnace shell. However, it is not possible to accurately and intuitively find the points described by the laser thickness gauge on the surface of the furnace shell. Utility Model Content

[0003] The main purpose of this utility model is to provide a converter shell that solves the technical problem that the specific location of the inner wall of the furnace lining cannot be accurately matched with the outer surface of the furnace shell.

[0004] To achieve the above objectives, this utility model provides a converter shell, comprising: a shell body and a marking line.

[0005] The furnace shell body comprises three parts: the furnace opening, the furnace body, and the furnace bottom.

[0006] The marking line at least covers the unobstructed area of ​​the furnace body; the marking line includes multiple scale lines arranged along a first direction and / or multiple scale lines arranged along a second direction; the scale lines in the same direction are evenly distributed in the unobstructed area; the first direction is perpendicular to the second direction.

[0007] In some embodiments, the first direction is a horizontal direction and the second direction is a vertical direction; the marking line includes multiple scale lines set along the first direction and multiple scale lines set along the second direction; in the same unobstructed area, the interval between any two adjacent scale lines in the horizontal direction is 10° to 30° arc length.

[0008] In some implementations, the interval between any two adjacent vertical scale lines is 0.2 to 1 m within the same unobstructed area.

[0009] In some implementations, within the same unobstructed area, the horizontal scale lines are spaced 10° apart, and the vertical scale lines are spaced 0.5m apart.

[0010] In some embodiments, the furnace opening is located at the upper part of the converter shell.

[0011] The converter shell is also equipped with a converter skirt and a converter support ring. The converter skirt is fixed to the periphery of the furnace opening and the opening faces the furnace body. The converter support ring is located in the middle of the furnace body and is parallel to the bottom of the converter skirt. The furnace bottom is located at the bottom of the converter shell. The uncovered area of ​​the furnace body includes the area of ​​the furnace body that is not covered by the converter skirt and the converter support ring.

[0012] In some embodiments, one end of the vertical scale line is close to the furnace opening, and the other end is close to the furnace bottom.

[0013] In some implementations, the spacing and direction of the marking lines on different unobstructed areas are consistent.

[0014] In some embodiments, the marking line is made of metal strips or high-temperature resistant coating.

[0015] In some embodiments, the converter shell has a tapping port; the zero point of the marking line is located on the shell body or on one side of the tapping port.

[0016] In some embodiments, the converter shell described in any of the above embodiments is marked with values ​​on the marking lines corresponding to the scale lines in the first direction and the scale lines in the second direction.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The aforementioned utility model provides a converter furnace shell, comprising: a furnace shell body and marking lines; wherein, the furnace shell body includes three parts: the furnace opening, the furnace body, and the furnace bottom. The marking lines at least cover the unobstructed area of ​​the furnace body; the marking lines include multiple scale lines arranged along a first direction and / or multiple scale lines arranged along a second direction; the scale lines in the same direction are evenly distributed in the unobstructed area; the first direction is perpendicular to the second direction. Thus, coordinate marking lines are established on the furnace body of the converter furnace shell through the marking lines. Based on the analysis of the marking lines, the corresponding positions of abnormal points in the furnace lining thickness measured by the thickness scanning equipment on the converter furnace shell can be determined, allowing for timely detection and immediate furnace protection measures to ensure that the furnace lining thickness does not erode excessively or even cause accidents such as furnace shell red-hot or furnace penetration. This utility model has a simple design, is easy to operate, improves production efficiency, and reduces the occurrence of safety accidents. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a front view of the converter shell of this utility model;

[0021] The attached figures are labeled as follows:

[0022] 10. Converter shell; 11. Shell body; 12. Marking line; 21. Furnace opening; 22. Furnace body; 23. Furnace bottom; 31. Converter skirt; 32. Converter support ring.

[0023] The implementation, functional features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] It should be noted that all directional indicators (such as up, down, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicator will also change accordingly.

[0026] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0027] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] This application provides a converter shell that solves the technical problem that the specific location of the inner wall of the furnace lining cannot be accurately matched with the outer surface of the furnace shell.

[0029] See Figure 1 The image shows a front view of the converter shell of this utility model; this utility model provides a converter shell 10, including: a shell body 11 and a marking line 12.

[0030] In some embodiments, the converter body is made of refractory material, such as welded steel plates. The furnace opening is located at the top of the furnace body; the furnace body, the main body of the furnace, is a vertical cylindrical shape and serves to contain raw materials or products; the furnace bottom is located at the bottom of the furnace body and serves to support the converter body.

[0031] See Figure 1 The marking line 12 covers at least the unobstructed area of ​​the furnace body 22. In some embodiments, a large area of ​​the converter shell is covered by the converter skirt and converter support ring, i.e., the obstructed area. The marking line and corresponding scale value in this area cannot be visually observed and have relatively little significance for operational guidance. Therefore, it is usually sufficient to design marking lines only in the unobstructed area of ​​the furnace body.

[0032] The marking line 12 includes multiple scale lines arranged along a first direction and / or multiple scale lines arranged along a second direction; the scale lines in the same direction are evenly distributed in the unobstructed area; the first direction is perpendicular to the second direction.

[0033] In some embodiments, the marking lines can be determined based on the three-dimensional coordinates of the laser thickness gauge model, or alternative coordinates can be created so that the marking lines resemble the scales of longitude and latitude on a globe.

[0034] The marking line 12 can take various forms. In some embodiments, the marking line 12 simultaneously includes multiple scale lines arranged along a first direction and multiple scale lines arranged along a second direction. In this case, the marking line 12 is grid-like. Exemplarily, the scale lines arranged along the first direction and the scale lines arranged along the second direction are respectively similar to the parallels of latitude and longitude on a globe.

[0035] In other embodiments, the marking lines are only marking lines in a single direction. For example, the marking lines may consist of only a plurality of scale lines arranged along a first direction or a plurality of scale lines arranged along a second direction.

[0036] The aforementioned utility model provides a converter furnace shell, comprising: a furnace shell body and marking lines; wherein, the furnace shell body includes three parts: the furnace opening, the furnace body, and the furnace bottom. The marking lines at least cover the unobstructed area of ​​the furnace body; the marking lines include multiple scale lines arranged along a first direction and / or multiple scale lines arranged along a second direction; the scale lines in the same direction are evenly distributed in the unobstructed area; the first direction is perpendicular to the second direction. Thus, by establishing coordinate marking lines on the furnace body of the converter furnace shell through the marking lines, the corresponding positions of abnormal points in the furnace lining thickness on the converter furnace shell can be determined based on the marking lines, or by combining data monitored using thickness scanning equipment, the corresponding points on the furnace body can be found in a timely manner, achieving the purpose of timely detection and immediate furnace protection measures, ensuring that the furnace lining thickness does not erode excessively or even cause accidents such as furnace shell red-hot or furnace penetration. This utility model has a simple design, is easy to operate, improves production efficiency, and reduces the occurrence of safety accidents.

[0037] To determine the location of a point, the scale lines are arranged similarly to the meridians and parallels on a globe. In some embodiments, the first direction is horizontal, similar to the parallels on a globe to represent angles; the second direction is vertical, similar to the meridians on a globe to represent depth; within the same unobstructed area, the interval between any two adjacent scale lines in the horizontal direction is 10° to 30° arc length.

[0038] In some embodiments, within the same unobstructed area, the interval between any two adjacent vertical scale lines is adjusted according to the height of the furnace shell body to facilitate observation of the scale; the arc length of the interval between any two adjacent horizontal scale lines is adjusted according to the interval between adjacent vertical scale lines, or according to the zero point of the coordinate indicator line, or according to the actual situation of the furnace shell body, so that a certain position can be determined based on the vertical and / or horizontal scale lines.

[0039] In some specific embodiments, the interval between any two adjacent scale lines in the horizontal direction is 10° arc length.

[0040] In some embodiments, the horizontal and vertical scale lines can be used by experienced steelworkers to perform auxiliary analysis by visually inspecting abnormal points in the furnace lining thickness.

[0041] In some embodiments, see Figure 1The unshaded area may contain multiple unconnected regions. For example, the area between the converter skirt 31 and the converter support ring 32 is an unshaded area; similarly, the area between the converter support ring 32 and the furnace bottom 23 is an unshaded area. Marking lines must be set in these two unshaded areas using the same zero point. Within the same unshaded area, the interval between any two adjacent vertical graduation lines is 0.2–1 m.

[0042] In some specific embodiments, the interval between any two adjacent scale lines in the vertical direction is 0.5m.

[0043] In some embodiments, within the same unobstructed area, the interval between the horizontal scale lines is 10° arc length; the interval between the vertical scale lines is 0.5m.

[0044] The horizontal scale lines actually represent a horizontal angle; while the vertical scale lines represent a vertical depth.

[0045] For example, in some specific embodiments, a factory has a 100t converter. Below the converter support ring on the furnace body, φ6mm coiled steel bars are fixed to the unobstructed portion. The zero point is located at the furnace mouth. The interval between any two adjacent horizontal graduation lines is 5° arc length, and the interval between vertical graduation lines is 1.0m. When a laser thickness gauge measures a furnace lining depth of 5.5 meters, the thinnest lining thickness is found at a 45° angle. This point is located on the furnace shell surface according to the markings on the furnace body. Subsequently, an infrared thermal imager is used to monitor the furnace shell surface temperature at this point every few heats. If the temperature at this point exceeds the warning temperature, the furnace is immediately shut down, and furnace protection measures are implemented to ensure that the furnace lining thickness does not erode excessively, or that the furnace shell becomes red-hot or even perforates.

[0046] In some embodiments, the furnace opening 21 is located at the upper part of the converter shell 10.

[0047] In some embodiments, the furnace opening 21 is covered by the converter skirt 31.

[0048] The converter shell 10 is also equipped with a converter skirt 31 and a converter support ring 32. The converter skirt 31 is fixed to the periphery of the furnace opening 21 and the opening faces the furnace body 22. The converter support ring 32 is located in the middle of the furnace body 22 and is parallel to the bottom of the converter skirt 31. The furnace bottom 23 is located at the bottom of the converter shell 10. The uncovered area of ​​the furnace body 22 includes the area on the furnace body that is not covered by the converter skirt 31 and the converter support ring 32.

[0049] In some embodiments, one end of the vertical scale line is close to the furnace opening 21, and the other end is close to the furnace bottom 23.

[0050] For example, the vertical scale line is aligned with the direction of the furnace body when it is upright. By setting the scale line, its corresponding scale can be combined with precision measuring equipment such as laser thickness gauges, as well as with visual inspection results. Problem points found on the inner wall of the furnace lining can be monitored with the help of the marking line. At the same time, abnormal points measured on the outer surface of the furnace shell can also be verified by the furnace lining thickness scanning results, so that the thickness of the converter shell has a comprehensive monitoring system with inner and outer layers, improving the accuracy and pertinence of the monitoring.

[0051] In some embodiments, the spacing and direction of the marker lines 12 on different unobstructed areas are consistent.

[0052] For example, the spacing between the horizontal scale lines and the spacing between any two adjacent vertical scale lines on different unobstructed areas remain the same.

[0053] In some embodiments, the material of the marking line 12 is a metal strip or a high-temperature resistant coating.

[0054] For example, when the marking line is made of metal strip, it can be fixed to the unobstructed area of ​​the furnace body by welding. For instance, the marking line can be made of coiled steel bar with a diameter of 6mm.

[0055] As another example, when the material of the marking line is a high-temperature resistant coating, the marking line is drawn on the furnace body using the coating.

[0056] In some embodiments, the converter shell 10 has a tapping port; the zero point of the marking line 12 is located on the shell body 11 or on one side of the tapping port.

[0057] In some embodiments, the zero point of the marking line is located at any position on the furnace shell body, such that the marking line on the furnace shell body is similar to the longitude and latitude lines on a globe.

[0058] In some embodiments, according to any of the above-described converter shells, the marking lines 12 are marked with values ​​corresponding to the scale lines in the first direction and the scale lines in the second direction.

[0059] For example, the thickness and angle of the corresponding point can be seen intuitively and conveniently through the values ​​marked on the identification line, which makes it easier for operators to find problem points in time and monitor data to avoid safety accidents.

[0060] This invention provides a converter furnace shell with marking lines set on its surface. These marking lines include multiple scale lines along a first direction and / or multiple scale lines along a second direction. The scale lines in the same direction are evenly distributed within the unobstructed area. The first direction is perpendicular to the second direction. Thus, coordinate marking lines are established on the converter furnace shell. Analysis of these marking lines reveals the corresponding locations of abnormal points in the furnace lining thickness on the furnace shell. Data from thickness gauge tests can also verify the accuracy of the identified abnormal points, allowing for timely detection and immediate furnace protection measures to prevent excessive erosion of the furnace lining, as well as accidents such as furnace shell overheating or perforation. This invention features a simple design, convenient operation, improved production efficiency, and reduced safety accidents.

[0061] The above technical solutions of this utility model are merely preferred embodiments and do not limit the patent scope of this utility model. All equivalent structural transformations made under the technical concept of this utility model using the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this utility model.

Claims

1. A converter shell (10) characterized by, The utility model relates to a converter furnace shell (10) and a marking line (12) are included. The converter furnace shell (11) includes a furnace mouth (21), a furnace body (22) and a furnace bottom (23). The marking line (12) covers at least the unobstructed area of the furnace body (22), and the marking line (12) includes a plurality of scale lines arranged in a first direction and / or a plurality of scale lines arranged in a second direction. The first direction is a horizontal direction, and the second direction is a vertical direction.

2. The vessel shell of claim 1, wherein In the same unobstructed area, the interval between any two adjacent scale lines in the horizontal direction is 10-30 arc lengths.

3. The vessel shell of claim 2, wherein, In the same unobstructed area, the interval between any two adjacent scale lines in the vertical direction is 0.2-1 m.

4. A vessel shell according to claim 2 or 3, characterized in that In the same unobstructed area, the interval between the scale lines in the horizontal direction is 10 arc lengths, and the interval between the scale lines in the vertical direction is 0.5 m.

5. The vessel shell of claim 2, wherein, The furnace mouth (21) is located at the upper part of the converter furnace shell (10). The converter furnace shell (10) is also matched with a converter skirt cover (31) and a converter support ring (32), the converter skirt cover (31) is fixed to the periphery of the furnace mouth (21) and has an opening facing the furnace body (22), the converter support ring (32) is arranged at the middle part of the furnace body (22) and is parallel to the lower part of the converter skirt cover (31), the furnace bottom (23) is located at the bottom of the converter furnace shell (10), and the unobstructed area of the furnace body (22) includes the area of the furnace body that is not obstructed by the converter skirt cover (31) and the converter support ring (32).

6. The vessel shell of claim 2, wherein, One end of the scale line in the vertical direction is close to the furnace mouth (21), and the other end is close to the position of the furnace bottom (23).

7. The vessel shell defined in claim 1, wherein The interval and direction of the marking line (12) on different unobstructed areas are consistent.

8. The vessel shell of claim 1 wherein, The material of the marking line (12) is a metal strip or a high-temperature resistant paint.

9. The vessel shell defined in claim 1, wherein The converter furnace shell (10) has a tapping hole, and the zero point of the marking line (12) is located on the converter furnace shell (11) or one side of the tapping hole.

10. The vessel shell according to any one of claims 1 to 9, characterized in that The marking line (12) is marked with numerical values corresponding to the scale lines in the first direction and the scale lines in the second direction.

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