Mounting structure of blast-furnace tuyere platform movable cover plate

Abstract

The utility model discloses a mounting structure of a blast furnace tuyere platform movable cover plate, which comprises a first box girder, a second box girder, a sinking platform support and a movable cover plate, the first box girder, the second box girder, the sinking platform support and the movable cover plate are all of hollow box body structures, a cooling water pipe horizontally penetrates out of the sinking platform support, and the movable cover plate is arranged on the sinking platform support. A sinking table with a sinking table top is arranged on the side, away from the blast furnace, of the sinking table support, the first box girder is fixedly installed on the sinking table, the first box girder and the second box girder are located on the two sides of the movable cover plate respectively, cooling water channels are arranged in the first box girder and the second box girder respectively, and the cooling water channels are communicated with the first box girder and the second box girder. And the movable cover plate is filled with a heat-resistant layer. The movable cover plate is high in structural strength, the defect that a traditional cover plate is prone to deformation is greatly overcome, the bearing capacity is improved, impact loads on the movable cover plate can be effectively avoided, the movable cover plate is prevented from collapsing and impacting the cooling water pipe, and the movable cover plate is stable in use, safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of iron-making blast furnaces, in particular to an installation structure of a movable cover plate on a blast furnace tuyere platform. Background Art

[0002] Cooling water pipes for cooling the blast furnace are provided on the furnace wall of the iron-making blast furnace. To avoid external damage to the cooling water pipes, the cooling water pipes are arranged below the blast furnace tuyere platform, that is, a tuyere platform is built in front of the blast furnace tuyere. The upper part of the tuyere platform is an operation space, and the cooling water pipes are isolated and protected below the operation space by the tuyere platform. To facilitate the maintenance of the cooling water pipes below, the tuyere platform is generally designed with a movable cover plate. The traditional movable cover plate of the blast furnace tuyere platform is a single plate, simply erected on the two side steel beams. The existing movable cover plate of this kind of blast furnace tuyere platform has the following disadvantages:

[0003] 1. The movable cover plate with a single plate structure has low strength. When installing equipment such as small sleeves and straight blow pipes for maintenance above it, due to the impact and vibration of the equipment, the movable cover plate is easily deformed, generating gaps and causing material leakage on the tuyere platform;

[0004] 2. The height distance between the upper tuyere and the lower cooling water pipe is relatively small. Traditionally, the steel beam is installed between the tuyere and the cooling water pipe in an installation space with a relatively small height distance dimension. The designed height of the steel beam is limited and the selected type is small, resulting in poor bending resistance of the steel beam. When maintaining the tuyere equipment above, due to the impact and vibration of the equipment, the steel beam is easily deformed and sinks. Not only does it have potential safety hazards, but the movable cover plate will also hit the lower cooling water pipe, causing damage to the cooling water pipe;

[0005] 3. The temperature above the iron notch of the blast furnace is relatively high, and the movable cover plate and the two side steel beams are easily thermally deformed, with a short service life. Summary of the Utility Model

[0006] The purpose of the utility model is to provide an installation structure of a movable cover plate on a blast furnace tuyere platform.

[0007] The technical solution for realizing the purpose of the utility model is: an installation structure of a movable cover plate on a blast furnace tuyere platform, installed at the front position of the blast furnace. There is a tuyere on the furnace wall of the blast furnace, and a cooling water pipe extends from the furnace wall of the blast furnace. The cooling water pipe is located below the tuyere;

[0008] The installation structure of the movable cover plate on the tuyere platform of the blast furnace includes a first box girder, a second box girder, a sunken platform support and a movable cover plate. The first box girder, the second box girder, the sunken platform support and the movable cover plate are all box structures with hollow interiors. One side of the sunken platform support is fixedly installed on the furnace wall of the blast furnace. The position where the cooling water pipe extends out of the furnace wall of the blast furnace is position A, and position A is located within the sunken platform support. The cooling water pipe horizontally penetrates through the sunken platform support. The side of the sunken platform support away from the blast furnace has a sunken platform with a sunken surface. The first box girder is fixedly installed on the sunken platform. The first box girder and the second box girder are respectively located on both sides of the movable cover plate. The first box girder, the movable cover plate and the second box girder are sequentially distributed in the direction away from the blast furnace. The second box girder is fixedly arranged. One side of the movable cover plate adjacent to the first box girder extends towards the first box girder to form a first edge, and one side of the movable cover plate adjacent to the second box girder extends towards the second box girder to form a second edge. The first edge is placed on the first box girder, and the second edge is placed on the second box girder. Cooling water channels are provided in both the first box girder and the second box girder, and a heat-resistant layer is filled in the movable cover plate.

[0009] Further, reinforcing ribs are provided in the movable cover plate. The arrangement of the reinforcing ribs not only improves the structural strength of the movable cover plate, but also plays an adhesive role, greatly improving the structural strength of the heat-resistant layer.

[0010] Further, the reinforcing ribs are in an inverted Y shape. The inverted Y-shaped reinforcing ribs can not only strengthen the movable cover plate, but also improve the adhesion force of the heat-resistant layer, making the heat-resistant layer more firm.

[0011] Further, the sunken platform support is in an L shape.

[0012] Further, both the side of the sunken platform support close to the blast furnace and the side away from the blast furnace are provided with openings. The open structure can facilitate the arrangement of the cooling water pipe in the sunken platform support.

[0013] Further, the surfaces of the movable cover plate, the first edge and the second edge are flush.

[0014] 1. The first box girder, the second box girder, the sunken platform support and the movable cover plate are all box structures with hollow interiors. Compared with the single-plate structure, in the installation structure, whether it is the first box girder, the second box girder, the sunken platform support for support, or the movable cover plate, the structural strength of each component is stronger, greatly improving the overall strength of the installation structure;

[0015] 2. In addition to having higher structural strength, the sunken platform support of the box body structure can also be easily sleeved outside the cooling water pipe. Compared with the traditional arrangement above the cooling water pipe, after the sunken platform support is sleeved outside the cooling water pipe, the installation of the sunken platform support is not affected by the small height and small installation space between the tuyere and the cooling water pipe. A larger type of sunken platform support can be selected, and the sunken platform support has a larger welding surface with the furnace wall of the blast furnace. While the sunken platform support is fixed more firmly and has higher bearing capacity, its bending resistance is also stronger.

[0016] 3. The sunken platform support has the sunken platform, and the first box girder is fixedly installed on the sunken platform. The sunken platform support and the first box girder are jointly used to support the movable cover plate. In this structure, on the one hand, after the sunken platform is set, the sunken platform support forms a stepped structure. Compared with a plane, the sunken platform support with a stepped structure has higher structural strength. When installing the first box girder on the sunken platform with a stepped structure, the structural span of the first box girder is small, and the structural strength of the first box girder is better. After the sunken platform support and the first box girder jointly support the movable cover plate, the overall structural strength is higher. On the other hand, the settlement structure of the sunken platform also creates conditions for the movable cover plate to be flush with the sunken platform support after installation, making the flatness of the overall structure better and more neat and beautiful.

[0017] 4. In addition to having higher structural strength, the first box girder and the second box girder of the box body structure can also facilitate the setting of the cooling water channels inside the first box girder and the second box girder. The setting of the cooling water channels inside the first box girder and the second box girder can effectively cool the first box girder and the second box girder, preventing the first box girder, the second box girder and the movable cover plate therebetween from being deformed by heat.

[0018] 5. In addition to having higher structural strength, the movable cover plate of the box body structure can also facilitate the filling of the heat-resistant layer inside the movable cover plate. When the heat-resistant layer is set inside the movable cover plate, on the one hand, the movable cover plate can form a mold, and the heat-resistant layer can be directly formed by filling refractory materials into the movable cover plate. While the formation of the heat-resistant layer is more convenient, the movable cover plate can also protect the heat-resistant layer and prevent the heat-resistant layer from being easily damaged. On the other hand, the setting of the heat-resistant layer inside the movable cover plate can effectively improve the heat-resistant performance of the movable cover plate and prevent the movable cover plate from being deformed by heat.

[0019] 6. The installation structure of the movable cover plate of the blast furnace tuyere platform of the present utility model has strong structural strength, greatly improves the disadvantages of easy deformation of the traditional cover plate, improves the bearing capacity, can effectively avoid the impact load on the movable cover plate, prevent collapse and impact on the cooling water pipe, and has stable use, safety and reliability. Brief Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the installation structure of the movable cover plate of the blast furnace tuyere platform of the present utility model; in the figure, the movable cover plate does not include a heat-resistant layer;

[0021] Figure 2 It is a schematic structural diagram of the movable cover plate of the installation structure of the movable cover plate of the blast furnace tuyere platform of the present utility model. Specific embodiments

[0022] The following will make a detailed description of the preferred embodiments of the installation structure of the movable cover plate of the blast furnace tuyere platform of the present utility model in conjunction with the accompanying drawings:

[0023] As Figure 1 and Figure 2 shown, an installation structure of a movable cover plate of a blast furnace tuyere platform is installed at the front position of a blast furnace 101. There is a tuyere 102 on the furnace wall of the blast furnace 101, and a cooling water pipe 103 extends out of the furnace wall of the blast furnace 101. The cooling water pipe 103 is located below the tuyere 102;

[0024] The installation structure of the movable cover plate of the blast furnace tuyere platform includes a first box girder 1, a second box girder 2, a sunken platform support 3 and a movable cover plate 4. The first box girder 1, the second box girder 2, the sunken platform support 3 and the movable cover plate 4 are all box structures with a hollow interior. One side of the sunken platform support 3 is fixedly installed on the furnace wall of the blast furnace 101. The position where the cooling water pipe 103 extends out of the furnace wall of the blast furnace 101 is position A, and position A is located within the sunken platform support 3. The cooling water pipe 103 horizontally penetrates the sunken platform support 3. The side of the sunken platform support 3 away from the blast furnace 101 has a sunken platform 31 with a sunken tabletop. The first box girder 1 is fixedly installed on the sunken platform 31. The first box girder 1 and the second box girder 2 are respectively located on both sides of the movable cover plate 4. The first box girder 1, the movable cover plate 4 and the second box girder 2 are arranged in sequence in the direction away from the blast furnace 101. The second box girder 2 is fixedly arranged. One side of the movable cover plate 4 adjacent to the first box girder 1 extends a first edge 41 towards the direction close to the first box girder 1. One side of the movable cover plate 4 adjacent to the second box girder 2 extends a second edge 42 towards the direction close to the second box girder 2. The first edge 41 is placed on the first box girder 1, and the second edge 42 is placed on the second box girder 2. Cooling water channels 10 are arranged in both the first box girder 1 and the second box girder 2, and a heat-resistant layer 43 is filled in the movable cover plate 4.

[0025] Installation structure of movable cover plate on blast furnace tuyere platform of the utility model. The sunken platform support 3 is fixed to the furnace wall of the blast furnace 101 to support the first box girder 1. The first box girder 1 is fixedly installed on the sunken platform 31, and the second box girder 2 is fixedly installed on the base body 104 of the tuyere platform in front of the furnace. Both the first box girder 1 and the second box girder 2 support the movable cover plate 4, jointly supporting the movable cover plate 4. The movable cover plate 4 is placed on the first box girder 1 and the second box girder 2 through the first edge 41 and the second edge 42, and can be turned up or lifted as needed.

[0026] The installation structure of the movable cover plate on the blast furnace tuyere platform of the utility model has the following advantages:

[0027] 1. The first box girder 1, the second box girder 2, the sunken platform support 3 and the movable cover plate 4 are all box structures with hollow interiors. Compared with single-plate structures, among the components in the installation structure, whether it is the first box girder 1, the second box girder 2, the sunken platform support 3 for support or the movable cover plate 4, the structural strength of each component is stronger, greatly improving the overall strength of the installation structure.

[0028] 2. In addition to higher structural strength, the box-structured sunken platform support 3 can also be easily sleeved outside the cooling water pipe 103. Compared with the traditional method of being located above the cooling water pipe 103, after the sunken platform support 3 is sleeved outside the cooling water pipe 103, the installation of the sunken platform support 3 is not affected by the small height and small installation space between the tuyere 102 and the cooling water pipe 103. The selection of the sunken platform support 3 can be larger, the sunken platform support 3 and the furnace wall of the blast furnace 101 have a larger welding surface, the sunken platform support 3 is fixed more firmly, has higher bearing capacity, and at the same time, the sunken platform support 3 has stronger bending resistance.

[0029] 3. The sunken platform support 3 has the sunken platform 31, and the first box girder 1 is fixedly installed on the sunken platform 31. The sunken platform support 3 and the first box girder 1 jointly support the movable cover plate 4. In this structure, on the one hand, after the sunken platform 31 is set, the sunken platform support 3 forms a stepped structure. Compared with a plane, the structural strength of the stepped sunken platform support 3 is higher. When installing the first box girder 1 on the stepped sunken platform 31, the structural span of the first box girder 1 is small and the structural strength of the first box girder 1 is better. After the sunken platform support 3 and the first box girder 1 jointly support the movable cover plate 4, the overall structural strength is higher. On the other hand, the settlement structure of the sunken platform 31 also creates conditions for the movable cover plate 4 to be flush with the sunken platform support 3 after installation, making the overall structure more flat, neater and more beautiful.

[0030] 4. In addition to having higher structural strength, the first box girder 1 and the second box girder 2 of the box body structure also facilitate the arrangement of the cooling water channels 10 therein. The arrangement of the cooling water channels 10 in the first box girder 1 and the second box girder 2 can effectively cool the first box girder 1 and the second box girder 2, preventing the first box girder 1, the second box girder 2 and the movable cover plate 4 therebetween from being deformed by heat.

[0031] 5. In addition to having higher structural strength, the movable cover plate 4 of the box body structure also facilitates the filling of the heat-resistant layer 43 therein. When the heat-resistant layer 43 is arranged in the movable cover plate 4, on the one hand, the movable cover plate 4 can form a mold, and the heat-resistant layer 43 can be directly formed by filling the movable cover plate 4 with refractory materials. While the formation of the heat-resistant layer 43 is more convenient, the movable cover plate 4 can also protect the heat-resistant layer 43 from being vulnerable; on the other hand, the arrangement of the heat-resistant layer 43 in the movable cover plate 4 can effectively improve the heat-resistant performance of the movable cover plate 4, preventing the movable cover plate 4 from being deformed by heat.

[0032] 6. The installation structure of the movable cover plate of the blast furnace tuyere platform of the present utility model has strong structural strength, greatly improves the drawback of the traditional cover plate being easily deformed, enhances the bearing capacity, can effectively avoid the impact load on the movable cover plate 4, prevent collapse and impact on the cooling water pipe 103, and has stable use, safety and reliability.

[0033] For the installation structure of the movable cover plate of the blast furnace tuyere platform of the present utility model, preferably, reinforcing ribs 44 are arranged in the movable cover plate 4. The arrangement of the reinforcing ribs 44 can not only improve the structural strength of the movable cover plate 4, but also play an adhesive role, greatly enhancing the structural strength of the heat-resistant layer 43.

[0034] For the installation structure of the movable cover plate of the blast furnace tuyere platform of the present utility model, preferably, the reinforcing ribs 44 are in an inverted Y shape. The inverted Y-shaped reinforcing ribs 44 can not only strengthen the movable cover plate 4, but also improve the adhesion force of the heat-resistant layer 43, making the heat-resistant layer 43 more firm.

[0035] For the installation structure of the movable cover plate of the blast furnace tuyere platform of the present utility model, preferably, the sunken platform support 3 is in an L shape.

[0036] For the installation structure of the movable cover plate of the blast furnace tuyere platform of the present utility model, preferably, both the side of the sunken platform support 3 close to the blast furnace 101 and the side away from the blast furnace 101 are open. The open structure can facilitate the arrangement of the cooling water pipe 103 in the sunken platform support 3.

[0037] The installation structure of the movable cover plate of the blast furnace tuyere platform of the present utility model. Preferably, the surfaces of the movable cover plate 4, the first edge 41 and the second edge 42 are flush.

[0038] For those of ordinary skill in the technical field to which the present utility model pertains, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, and all should be regarded as falling within the protection scope of the present utility model.

Claims

1. A mounting structure for a movable cover plate of a blast furnace tuyere platform, which is mounted in front of a blast furnace, wherein a tuyere is provided on the furnace wall of the blast furnace, a cooling water pipe extends from the furnace wall of the blast furnace, and the cooling water pipe is located below the tuyere; characterized in that: The invention comprises a first box beam, a second box beam, a sinking platform support and a movable cover plate, wherein the first box beam, the second box beam, the sinking platform support and the movable cover plate are all box structures with a hollow interior, one side of the sinking platform support is fixedly installed on the furnace wall of the blast furnace, the position where the cooling water pipe extends out of the furnace wall of the blast furnace is position A, the position A is located in the sinking platform support, the cooling water pipe horizontally passes through the sinking platform support, the side of the sinking platform support away from the blast furnace has a sinking platform with a sinking table top, the first box beam is fixedly installed on the sinking platform, the first box beam and the second box beam are respectively located in On both sides of the movable cover plate, the first box girder, the movable cover plate and the second box girder are distributed in sequence along the direction away from the blast furnace, the second box girder is fixedly arranged, a side of the movable cover plate adjacent to the first box girder extends with a first edge in the direction close to the first box girder, and a side of the movable cover plate adjacent to the second box girder extends with a second edge in the direction close to the second box girder, the first edge is erected on the first box girder, the second edge is erected on the second box girder, cooling water channels are provided in the first box girder and the second box girder, and the movable cover plate is filled with a heat-resistant layer.

2. The installation structure of the movable cover plate of the blast furnace tuyere platform according to claim 1 is characterized in that: The movable cover plate is provided with reinforcing ribs.

3. The installation structure of the movable cover plate of the blast furnace tuyere platform according to claim 2 is characterized in that: The reinforcing rib is in an inverted Y shape.

4. The installation structure of the movable cover plate of the blast furnace tuyere platform according to claim 1 is characterized in that: The sinking platform support is L-shaped.

5. The installation structure of the movable cover plate of the blast furnace tuyere platform according to claim 1 is characterized in that: The side of the sink support close to the blast furnace and the side away from the blast furnace are both open.

6. The installation structure of the movable cover plate of the blast furnace tuyere platform according to claim 1 is characterized in that: The surfaces of the movable cover plate, the first edge and the second edge are flush.

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