A structure to prevent the bottom sealing plate of a blast furnace from curling up.

Abstract

This invention belongs to the field of blast furnace technology and discloses a structure for preventing the bottom sealing plate of a blast furnace from tilting upwards, thus solving the problem of gas leakage. The bottom sealing plate is fixed on a fixing frame, which includes a first I-beam frame fixed to the furnace bottom foundation and a second I-beam frame fixed on the first I-beam frame. The bottom sealing plate is fixed on the second I-beam frame, which includes multiple second I-beams spaced apart and fixed on the first I-beam frame. Each second I-beam includes an upper flange connected to the bottom sealing plate and a lower flange connected to the second I-beam frame, as well as a web plate connecting the upper flange and the lower flange. The structure for preventing the bottom sealing plate of the blast furnace from tilting upwards includes a reinforcing plate. The top end of the reinforcing plate is fixedly connected to the bottom sealing plate located between the upper flanges of adjacent second I-beams, the bottom end of the reinforcing plate is fixedly connected to the first I-beam frame, and the two sides of the reinforcing plate are respectively fixedly connected to the web plates of adjacent second I-beams.

Description

Technical Field

[0001] This invention relates to the field of blast furnace technology, and more specifically to a structure for preventing the bottom sealing plate of a blast furnace from tilting upwards. Background Technology

[0002] The blast furnace bottom sealing plate, as the bottom wall of the blast furnace, is an important component. With the extension of blast furnace production time and the poor grade of the ore used in the furnace, harmful metals such as K, Na, Pb, and Zn accumulate in the blast furnace, causing abnormal expansion of the refractory material inside the furnace. This leads to the furnace shell (i.e., the side wall of the blast furnace) rising, which in turn causes the bottom sealing plate to tilt upwards. Ultimately, this results in gas leaking out of the furnace and spreading in all directions, seriously affecting production safety. Summary of the Invention

[0003] To address the problem of gas leakage caused by the bottom sealing plate of a blast furnace tilting upwards, this invention proposes a structure to prevent the bottom sealing plate of a blast furnace from tilting upwards.

[0004] According to the present invention, the structure for preventing the bottom sealing plate of a blast furnace from tilting upwards includes a bottom sealing plate fixed to a fixing frame. The fixing frame includes a first I-beam frame fixed to the furnace bottom foundation and a second I-beam frame fixed to the first I-beam frame. The bottom sealing plate is fixed to the second I-beam frame. The second I-beam frame includes a plurality of second I-beams spaced apart and fixed to the first I-beam frame. Each second I-beam includes an upper flange connected to the bottom sealing plate and a lower flange connected to the second I-beam frame, as well as a web plate connecting the upper flange and the lower flange. The structure for preventing the bottom sealing plate of a blast furnace from tilting upwards includes a reinforcing plate. The top end of the reinforcing plate is fixedly connected to the bottom sealing plate located between the upper flanges of adjacent second I-beams. The bottom end of the reinforcing plate is fixedly connected to the first I-beam frame. The two sides of the reinforcing plate are respectively fixedly connected to the web plates of adjacent second I-beams.

[0005] Furthermore, the reinforcing plate has clearance portions for avoiding the upper and lower flanges of the second I-beam.

[0006] Furthermore, the reinforcing plate is an octagonal plate formed by cutting off the four corners of a rectangular plate in a straight line, and the clearance part is the oblique side formed by cutting off the four corners of the rectangular plate.

[0007] Furthermore, the reinforcing plate has water-cooling holes for passing through the water-cooling pipes of the blast furnace, and a sleeve is provided between the water-cooling holes and the water-cooling pipes.

[0008] Furthermore, the structure to prevent the bottom sealing plate of the blast furnace from tilting upwards also includes a sealing horizontal ring plate and a sealing vertical ring plate. One end of the sealing horizontal ring plate is overlapped and fixed to the bottom sealing plate, and the other end is fixedly connected to the sealing vertical ring plate. One end of the sealing vertical ring plate is fixedly connected to the sealing horizontal ring plate, and the other end is fixedly connected to the embedded part on the furnace bottom foundation.

[0009] Furthermore, the structure for preventing the bottom sealing plate of the blast furnace from tilting upwards also includes a first stiffening plate connecting the outer side of the blast furnace shell and the bottom sealing plate, and a second stiffening plate connecting the inner side of the blast furnace shell and the bottom sealing plate.

[0010] Furthermore, the first stiffener and the second stiffener are multiple stiffeners arranged at intervals along the circumference of the furnace shell.

[0011] Furthermore, the first stiffening plate located on the outer side of the furnace shell is staggered from the second stiffening plate located on the inner side of the furnace shell.

[0012] Furthermore, in the top view of the blast furnace, the first I-beam frame includes a ring section, and the second I-beam frame includes a plurality of second rod sections arranged at intervals. The second rod sections are formed by the upper flange of the second I-beam. The second rod sections are overlapped and fixed on the ring section, and the bottom end of the reinforcing plate is fixedly connected to the ring section.

[0013] Furthermore, in the top view of the blast furnace, the first I-beam frame also includes a plurality of first rods arranged at intervals within the ring, with second rods fixed at an angle to the first rods.

[0014] Compared with the prior art, the structure of the present invention for preventing the bottom sealing plate of the blast furnace from tilting upwards is simple. The reinforcing plate can be quickly installed by welding. By further and effectively reinforcing the bottom sealing plate, the tilting of the bottom sealing plate can be simply and effectively prevented, thereby effectively preventing gas leakage caused by the tilting of the bottom sealing plate, and thus ensuring the production safety of the blast furnace. Attached Figure Description

[0015] Figure 1 A side cross-sectional schematic diagram of a structure for preventing the bottom sealing plate of a blast furnace from tilting upwards according to an embodiment of the present invention;

[0016] Figure 2 This is a front cross-sectional schematic diagram of a structure for preventing the bottom sealing plate of a blast furnace from tilting upwards according to an embodiment of the present invention;

[0017] Figure 3 for Figure 1 The top view of the second I-beam frame shown;

[0018] Figure 4 for Figure 1 The top view of the first I-beam frame shown. Detailed Implementation

[0019] To better understand the purpose, structure, and function of this invention, the invention will be described in further detail below with reference to the accompanying drawings.

[0020] Figure 1 and Figure 2The structure for preventing the bottom sealing plate of a blast furnace from tilting upwards according to an embodiment of the present invention is shown. (Combined with...) Figures 1 to 4 As shown, the furnace bottom sealing plate 1 is fixed on a fixing frame, which includes a first I-beam frame 6 fixed on the furnace bottom foundation 102 and a second I-beam frame 3 fixed on the first I-beam frame 6. The furnace bottom sealing plate 1 is fixed on the second I-beam frame 3, combined with... Figure 1 and Figure 3 As shown, the second I-beam frame 3 includes a plurality of second I-beams 30 fixedly and spaced apart on the first I-beam frame 6. Each second I-beam 30 includes an upper flange 31 connected to the furnace bottom sealing plate 1 and a lower flange 32 connected to the second I-beam frame 6, as well as a web plate 33 connecting the upper flange 31 and the lower flange 32. The structure to prevent the furnace bottom sealing plate from tilting upward may include: a reinforcing plate 2, the top of the reinforcing plate 2 being fixedly connected to the furnace bottom sealing plate 1 located between the upper flanges 31 of adjacent second I-beams 30, the bottom of the reinforcing plate 2 being fixedly connected to the first I-beam frame 6, and the two sides of the reinforcing plate 2 being fixedly connected to the web plates 33 of adjacent second I-beams 30 respectively.

[0021] In the prior art, since the second I-beam frame 3 is connected between the first I-beam frame 6 and the furnace bottom sealing plate 1, the furnace bottom sealing plate 1 is only fixed by the second I-beam frame 3. When the refractory material inside the blast furnace expands abnormally, it can easily cause the furnace shell 101 to rise, which can easily cause the furnace bottom sealing plate 1 to tilt upwards, ultimately leading to the escape of gas from the furnace. The structure of the present invention that prevents the furnace bottom sealing plate from tilting upwards is achieved by using a reinforcing plate 2. On the one hand, the top and bottom ends of the reinforcing plate 2 are connected to the furnace bottom sealing plate 1 and the first I-beam frame 6 respectively, thereby preventing the furnace bottom from tilting upwards. The sealing plate 1 is connected to the second I-beam frame 3 and also indirectly connected to the first I-beam frame 6. This increases the fixing strength of the furnace bottom sealing plate 1. On the other hand, it allows the two ends of the reinforcing plate 2 to be fixedly connected to the web plates 33 of the adjacent second I-beams 30. Thus, the reinforcing plate 2 can share the tensile force borne by the connection between the furnace bottom sealing plate 1 and each of the second I-beams 30 when the furnace bottom sealing plate 1 is under tension. This effectively prevents the separation of the furnace bottom sealing plate 1 from the second I-beam frame 3, that is, effectively prevents the furnace bottom sealing plate 1 from tilting upward.

[0022] In such Figure 1 In the preferred embodiment shown, the reinforcing plate 2 may have a clearance portion 21 for avoiding the upper flange 31 and lower flange 32 of the second I-beam 30. The clearance portion 21 can prevent the upper flange 31 and lower flange 32 of the second I-beam 30 from obstructing the installation of the reinforcing plate 2, and its specific structure and shape can be specifically set according to actual needs.

[0023] Preferably, the reinforcing plate 2 can be formed by straight-line cutting off the four corners of a rectangular plate, such as... Figure 1 The octagonal plate shown has a clearance portion 21, which is the oblique side formed by cutting off the four corners of the rectangular plate.

[0024] In such Figure 1 and Figure 2 In the preferred embodiment shown, the reinforcing plate 2 has water-cooling holes for the water-cooling pipe 22 passing through the blast furnace, and a sleeve 23 is provided between the water-cooling holes and the water-cooling pipe 22. Preferably, the sleeve 23 can be made of a heat-resistant elastic material, which is used to achieve better protection for the water-cooling pipe 22.

[0025] In a preferred embodiment, at least one buffer hole may be formed on the reinforcing plate 2. This buffer hole can buffer the deformation of the reinforcing plate 2 when the furnace bottom sealing plate 1 is pulled upwards rapidly, preventing the reinforcing plate 2 from quickly detaching from the connection points with the furnace bottom sealing plate 1 and the first I-beam frame 6, thereby further preventing the furnace bottom sealing plate 1 from warping upwards. Preferably, the buffer hole can be circular, transverse strip, etc.

[0026] According to the present invention, such as Figure 1 and Figure 2 As shown, the structure to prevent the blast furnace bottom sealing plate from tilting upwards may also include a sealing horizontal ring plate 41 and a sealing vertical ring plate 42. One end of the sealing horizontal ring plate 41 is overlapped and fixed to the bottom sealing plate 1, and the other end is fixedly connected to the sealing vertical ring plate 42. One end of the sealing vertical ring plate 42 is fixedly connected to the sealing horizontal ring plate 41, and the other end is fixedly connected to the embedded part 103 on the bottom foundation 102. The sealing horizontal ring plate 41 and the sealing vertical ring plate 42 can be used to further prevent the bottom sealing plate 1 from tilting upwards, and at the same time, they can also seal the bottom sealing plate 1 and the bottom foundation 102, so that even if a certain amount of gas leakage occurs at the bottom sealing plate 1, the gas can be prevented from directly leaking into the atmosphere.

[0027] According to the present invention, such as Figure 1 and Figure 2 As shown, the structure to prevent the bottom sealing plate of the blast furnace from tilting upwards may further include a first stiffening plate 51 connecting the outer side of the blast furnace shell 101 and the bottom sealing plate 1, and a second stiffening plate 52 connecting the inner side of the blast furnace shell 101 and the bottom sealing plate 1. The arrangement of the first stiffening plate 51 and the second stiffening plate 52 can not only strengthen the connection between the furnace shell 101 and the bottom sealing plate 1, but also further prevent the bottom sealing plate 1 from tilting upwards at the connection with the furnace shell 101.

[0028] Preferably, the first stiffener 51 and the second stiffener 52 are arranged in multiple circumferentially along the furnace shell 101. The specific number of them can be selected according to the outer circumferential dimensions of the furnace shell 101, and no specific limitation is made here.

[0029] In a preferred embodiment, the first stiffening plate 51 located on the outer side of the furnace shell 101 and the second stiffening plate 52 located on the inner side of the furnace shell 101 can be staggered. This arrangement can further strengthen the connection between the furnace shell 101 and the furnace bottom sealing plate 1, and can also further prevent the furnace bottom sealing plate 1 from warping upward at the connection with the furnace shell 101.

[0030] In such Figure 3 and Figure 4 In the embodiment shown, in the top view of the blast furnace, the first I-beam frame 6 may include a ring 61, and the second I-beam frame 3 may include a plurality of second rods arranged at intervals. The second rods are formed by the upper flange 31 of the second I-beam 30. The second rods are overlapped and fixed on the ring 61, and the bottom end of the reinforcing plate 2 is fixedly connected to the ring 61.

[0031] Furthermore, in the top view of the blast furnace, the first I-beam frame 6 may also include a plurality of first rods 62 arranged at intervals within the ring 61, with second rods 62 fixed at an angle to the first rods. This angle is preferably 90° to achieve more stable and better support of the second rods by the first rods 62.

[0032] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by those skilled in the art to which this invention pertains.

[0033] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A structure for preventing the bottom sealing plate of a blast furnace from tilting upwards, wherein the bottom sealing plate is fixed to a fixing frame, the fixing frame comprising a first H-beam frame fixed to a furnace bottom foundation and a second H-beam frame fixed to the first H-beam frame, the bottom sealing plate being fixed to the second H-beam frame, the second H-beam frame comprising a plurality of second H-beams spaced apart and fixed to the first H-beam frame, each second H-beam comprising an upper flange connected to the bottom sealing plate and a lower flange connected to the second H-beam frame, and a web connecting the upper flange and the lower flange, characterized in that... The structure for preventing the bottom sealing plate of the blast furnace from tilting upwards includes: a reinforcing plate, the top end of which is fixedly connected to the bottom sealing plate located between the upper flanges of the adjacent second I-beam, the bottom end of which is fixedly connected to the first I-beam frame, and the two sides of which are fixedly connected to the webs of the adjacent second I-beams respectively. The reinforcing plate has a clearance portion for avoiding the upper flanges and lower flanges of the second I-beams. The reinforcing plate is an octagonal plate formed by straight cutting off the four corners of a rectangular plate, and the clearance portion is the oblique side formed by cutting off the four corners of the rectangular plate.

2. The structure for preventing the bottom sealing plate of a blast furnace from tilting upwards according to claim 1, characterized in that, The reinforcing plate has water-cooling holes for passing through the water-cooling pipes of the blast furnace, and a sleeve is provided between the water-cooling holes and the water-cooling pipes.

3. The structure for preventing the bottom sealing plate of a blast furnace from tilting upwards according to claim 1, characterized in that, The structure for preventing the bottom sealing plate of the blast furnace from tilting upwards also includes a sealing horizontal ring plate and a sealing vertical ring plate. One end of the sealing horizontal ring plate overlaps and is fixed to the bottom sealing plate, and the other end is fixedly connected to the sealing vertical ring plate. One end of the sealing vertical ring plate is fixedly connected to the sealing horizontal ring plate, and the other end is fixedly connected to the embedded part on the bottom foundation.

4. The structure for preventing the bottom sealing plate of a blast furnace from tilting upwards according to claim 1, characterized in that, The structure for preventing the bottom sealing plate of the blast furnace from tilting upwards also includes a first stiffening plate connecting the outer side of the blast furnace shell and the bottom sealing plate, and a second stiffening plate connecting the inner side of the blast furnace shell and the bottom sealing plate.

5. The structure for preventing the bottom sealing plate of a blast furnace from tilting upwards according to claim 4, characterized in that, The first stiffener and the second stiffener are each a plurality of ribs arranged at intervals along the circumference of the furnace shell.

6. The structure for preventing the bottom sealing plate of a blast furnace from tilting upwards according to claim 5, characterized in that, The first stiffening plate located on the outer side of the furnace shell is staggered from the second stiffening plate located on the inner side of the furnace shell.

7. The structure for preventing the bottom sealing plate of a blast furnace from tilting upwards according to claim 1, characterized in that, In the top view of the blast furnace, the first I-beam frame includes a ring portion, the second I-beam frame includes a plurality of second rod portions arranged at intervals, the second rod portions are formed by the upper flange of the second I-beam, the second rod portions overlap and are fixed to the ring portion, and the bottom end of the reinforcing plate is fixedly connected to the ring portion.

8. The structure for preventing the bottom sealing plate of a blast furnace from tilting upwards according to claim 7, characterized in that, In the top view of the blast furnace, the first I-beam frame also includes a plurality of first rods arranged at intervals within the ring, and the second rods are fixed at an angle to the first rods.

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