CN212720875U

CN212720875U - Metallurgical hot rolling heating furnace discharging furnace door

Info

Publication number: CN212720875U
Application number: CN202020913649.3U
Authority: CN
Inventors: 吴明双; 徐作岐; 吴明强
Original assignee: Shandong Jinshi Energy Saving Material Co ltd
Current assignee: Shandong Jinshi Energy Saving Material Co ltd
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-03-16
Anticipated expiration: 2030-05-26

Abstract

The utility model provides a metallurgical hot rolling heating furnace ejection of compact furnace gate, includes the casing, is equipped with outer heat preservation and interior heat preservation in proper order in the casing outside-in, interior heat preservation includes the first fibre blanket that a plurality of layers of stack set up, outer heat preservation is formed by a plurality of heat preservation blocks equipment side by side, the heat preservation block includes the second fibre blanket, the reciprocal folding heat preservation block body that forms of second fibre blanket is equipped with a plurality of coupling assembling that are used for arranging the heat preservation block body in an organic whole in the heat preservation block body, coupling assembling includes a plurality of transverse connection poles and the vertical connecting rod that links to each other with transverse connection pole, transverse connection spare extends along the folding direction of second fibre blanket, the direction setting of second fibre blanket horizontal extension is followed to vertical connecting rod. The furnace door of this application is a whole, does not set up the compensation blanket, can not appear the problem that compensation blanket and module drop.

Description

Metallurgical hot rolling heating furnace discharging furnace door

Technical Field

The application relates to a metallurgical hot rolling heating furnace discharge furnace door.

Background

A hot rolling heating furnace of steel mills in the metallurgical industry is heating equipment for heating slabs such as low carbon steel, alloy steel, carbon steel, pipeline steel and the like to a rolling temperature, generally comprises a stepping heating furnace and a steel pushing furnace according to different feeding modes, wherein the furnace temperature is generally 1300-1350 ℃, the slab tapping temperature is about 1250 ℃, and the hot rolling heating furnace belongs to a high-temperature heating furnace in the metallurgical industry. The discharging furnace door of the steel rolling heating furnace adopts a heavy castable prefabricated structure mostly due to high working temperature, and the density is more than 2000-3000 kg/m³The density is high, the structure is heavy, and the service life of the furnace door lifting system is short due to frequent opening; the refractory castable has poor rapid cooling and heating resistance after being started, so that cracks and falling are caused, the furnace is required to be frequently stopped for maintenance and replacement, and the production of enterprises is influenced. In recent years, some steel mills try light modification, adopt a 143 zirconium-containing aluminum silicate fiber folding module and a zirconium-containing fiber compensation blanket structure, but have short service life, local module falling and local compensation blanket falling can occur frequently in a short overhaul period, and the service cycle is shorter than that of a refractory castable structure, so that the comprehensive large-scale application cannot be realized.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the application provides a metallurgical hot rolling heating furnace ejection of compact furnace gate, including the casing, outside-in is equipped with outer heat preservation and interior heat preservation in proper order in the casing, interior heat preservation includes the first fibre blanket that a plurality of layers stack set up, outer heat preservation is formed by a plurality of heat insulating blocks equipment side by side, the heat insulating block includes the second fibre blanket, the reciprocal folding heat insulating block body that forms of second fibre blanket is equipped with a plurality of coupling assembling that are used for arranging the heat insulating block body in an organic whole in the heat insulating block body, coupling assembling includes a plurality of transverse connecting rods and the vertical connecting rod that links to each other with transverse connecting rod, transverse connecting piece extends along the folding direction of second fibre blanket, vertical connecting rod sets up along the direction that the second fibre blanket level extends. The first fiber blanket generally adopts a 1260 high-purity fiber blanket, has the advantages of softness, low heat conductivity coefficient and good plasticity, is placed close to the first layer of the wall plate for use, and can level the defects of the steel plate; the second fiber blanket is generally a 1430 zirconium-containing or 1500 chromium-containing large fiber blanket, the height direction of the furnace door is a whole block, the connecting assembly is embedded, the second fiber blanket is fastened to an anchoring member welded on a steel plate of the furnace door by adopting a nut on a construction site, and after the second fiber blanket is installed, the furnace door is a whole body, the compensation blanket is not arranged, and the problem that the compensation blanket and the module fall off can not occur.

Preferably, an L-shaped connecting piece is arranged on one side of the vertical connecting rod, and a fastening bolt is arranged on the L-shaped connecting piece and penetrates through the inner heat-insulating layer.

Preferably, a metal plate is further arranged on the outer side of the inner heat-insulating layer, and the fastening bolt is fixedly connected with the metal plate.

Preferably, the fastening bolt penetrates through the metal plate and is fixedly connected with the metal plate through a nut.

Preferably, the fastening bolt is welded to the metal plate.

Preferably, a plurality of strapping tapes are arranged outside the outer heat-insulating layer.

Preferably, the L-shaped connector comprises a connecting plate and an inserting plate, the fastening bolt passes through the connecting plate and is fixedly connected with the connecting plate through a nut, and the inserting plate is inserted into the folding seam of the second fiber blanket. This application adopts L shape connecting piece as central connecting piece, then utilizes vertical connecting rod and transverse connection spare to realize guaranteeing overall structure's stability to the central connecting elements of second fibre blanket formation insulating block body.

Preferably, the transverse connecting rod penetrates through the insertion plate, and the vertical connecting rod is fixedly arranged on one side of the insertion plate.

Preferably, the height of the second fiber blanket is consistent with the height of the oven door, so that an integrated arrangement is formed in the height direction of the oven door.

Preferably, the connecting members of the same second fibrous blanket are arranged correspondingly.

This application can bring following beneficial effect:

1. the first fiber blanket has the advantages of softness, low thermal conductivity coefficient and good plasticity, and can be placed on the first layer close to the wall plate for use, so that the defects of the steel plate can be leveled; the furnace door of the second fiber blanket is a whole in the height direction, the connecting assembly is embedded, the second fiber blanket is fastened to an anchoring member welded on a steel plate of the furnace door by adopting a nut on a construction site, and after the second fiber blanket is installed, the furnace door is a whole, a compensation blanket is not arranged, and the problem that the compensation blanket and a module fall off is avoided;

2. the L-shaped connecting piece is used as the central connecting piece, and then the vertical connecting rod and the transverse connecting piece are used for forming the central connecting component of the heat insulation block body for the second fiber blanket, so that the stability of the whole structure is ensured;

3. compared with the existing heat-insulating structure of the prefabricated furnace body made of refractory castable, the utility model can reduce the temperature of the outer wall of the furnace body by 20-30 ℃, and has obvious energy-saving effect after being reformed and used; compared with the existing refractory castable prefabricated furnace body heat-insulating structure, the weight of the furnace body heat-insulating material is reduced by more than 80%, the load of a furnace door lifting mechanism can be reduced, the service life of lifting equipment is prolonged, and the maintenance cost is reduced; compared with the existing heat insulation structure of the aluminum silicate fiber small fiber module, the structure has no compensation blanket, reduces the heat leakage of the fiber at the seam, and can reduce the temperature of the outer wall by more than 10 ℃; the large-scale block structure can avoid the problem that the small-scale folding module and the fiber blanket for compensation shrink after being used at high temperature to fall off, and the service life is prolonged by more than 2 maintenance cycles; compared with the existing heat insulation structure of the aluminum silicate fiber small folding module, the heat insulation structure of the furnace door has the advantages that after the heat insulation layer of the furnace door is installed, the interior of the furnace door is a whole, and the appearance is neat and attractive; the large-scale aluminum silicate integral block is a set of fiber combined blanket and is fixed together with a plurality of sets of anchoring parts, so that the maintenance frequency can be reduced, the maintenance cost can be reduced by more than 50 percent, and the enterprise yield can be improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural diagram of the present application;

FIG. 2 is a top view of the present application;

fig. 3 is a schematic structural view of an external insulation layer.

Detailed Description

In order to clearly explain the technical features of the present invention, the present application will be explained in detail by the following embodiments in combination with the accompanying drawings.

As shown in the drawings, the following detailed description is given by way of example in order to more clearly explain the overall concept of the present application.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In a first embodiment, as shown in fig. 1-3, a discharging furnace door of a metallurgical hot rolling heating furnace comprises a casing 1, an outer heat-insulating layer and an inner heat-insulating layer are sequentially arranged in the casing 1 from outside to inside, the inner heat-insulating layer comprises a plurality of stacked first fiber blankets 2, the outer heat-insulating layer is formed by assembling a plurality of heat-insulating blocks side by side, each heat-insulating block comprises a second fiber blanket 4, the second fiber blanket 4 is folded back and forth to form a heat-insulating block body 3, a plurality of connecting assemblies 5 for placing the heat-insulating block body 3 into a whole are arranged in the heat-insulating block body 3, each connecting assembly 5 comprises a plurality of transverse connecting rods 6 and a vertical connecting rod 7 connected with the transverse connecting rods 6, the transverse connecting rods extend along the folding direction of the second fiber blanket 4, and the vertical connecting rods 7 are arranged along the horizontal extending direction of. An L-shaped connecting piece 8 is arranged on one side of the vertical connecting rod 7, a fastening bolt 9 is arranged on the L-shaped connecting piece 8, and the fastening bolt 9 penetrates through the inner heat-insulating layer. And a metal plate 10 is also arranged on the outer side of the inner heat-insulating layer, and the fastening bolt 9 is fixedly connected with the metal plate 10. The fastening bolt 9 penetrates through the metal plate 10 and is fixedly connected with the metal plate through a nut. The fastening bolt 9 is welded to the metal plate 10. A plurality of strapping tapes 11 are arranged outside the outer heat-insulating layer. The L-shaped connector 8 comprises a connecting plate 12 and an inserting plate 13, the fastening bolt 9 is fixedly arranged through the connecting plate 12 by a nut, and the inserting plate 13 is inserted into the folding seam of the second fiber blanket 4. The transverse connecting rod 6 is arranged through the inserting plate 13, and the vertical connecting rod 7 is fixedly arranged at one side of the inserting plate 13. The height of the second fiber blanket 4 is consistent with the height of the oven door, so that an integrated arrangement is formed in the height direction of the oven door. The connecting members 5 of the same second fibre blanket 4 are arranged correspondingly.

During assembly, firstly, the fastening bolt 9 is connected to the metal plate 10, then the first fiber blanket 2 is worn, if a plurality of first fiber blankets 2 exist, the first fiber blankets 2 are arranged in a staggered mode during layout, then the second fiber blankets 4 are folded in a rolling mode, the first fiber blankets 2 are connected through the L-shaped connecting pieces 8, then the second fiber blankets 4 are arranged into a whole through the transverse connecting rods 6 and the vertical connecting rods 7, and therefore the whole assembly of the furnace door is completed.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. The utility model provides a metallurgical hot rolling heating furnace ejection of compact furnace gate which characterized in that: including the casing, outside-in is equipped with outer heat preservation and interior heat preservation in proper order in the casing, interior heat preservation includes the first fibre blanket that a plurality of layers of stack set up, outer heat preservation is assembled side by a plurality of heat preservation pieces and is formed, the heat preservation piece includes the second fibre blanket, the reciprocal folding heat preservation piece body that forms of second fibre blanket is equipped with a plurality of coupling assembling that are used for arranging the heat preservation piece body in an organic whole in the heat preservation piece body, coupling assembling includes a plurality of transverse connection poles and the vertical connecting rod that links to each other with transverse connection pole, transverse connection spare extends along the folding direction of second fibre blanket, vertical connecting rod sets up along the direction that the second fibre blanket level extends.

2. The metallurgical hot rolling heating furnace discharge furnace door of claim 1, wherein: an L-shaped connecting piece is arranged on one side of the vertical connecting rod, a fastening bolt is arranged on the L-shaped connecting piece, and the fastening bolt penetrates through the inner heat insulation layer.

3. The metallurgical hot rolling heating furnace discharge furnace door of claim 2, characterized in that: and a metal plate is arranged on the outer side of the inner heat-insulating layer, and the fastening bolt is fixedly connected with the metal plate.

4. The metallurgical hot rolling heating furnace discharge furnace door of claim 3, characterized in that: the fastening bolt penetrates through the metal plate and is fixedly connected with the metal plate through a nut.

5. The metallurgical hot rolling heating furnace discharge furnace door of claim 3, characterized in that: the fastening bolt is welded with the metal plate.

6. The metallurgical hot rolling heating furnace discharge furnace door of claim 2, characterized in that: a plurality of strapping tapes are arranged outside the outer heat-insulating layer.

7. The metallurgical hot rolling heating furnace discharge furnace door of claim 2, characterized in that: the L-shaped connecting piece comprises a connecting plate and an inserting plate, the fastening bolt penetrates through the connecting plate and is fixedly connected through a nut, and the inserting plate is inserted into the folding seam of the second fiber blanket.

8. The metallurgical hot rolling heating furnace discharge furnace door of claim 7, wherein: the transverse connecting rod penetrates through the inserting plate, and the vertical connecting rod is fixedly arranged on one side of the inserting plate.

9. The metallurgical hot rolling heating furnace discharge furnace door of claim 1, wherein: the height of the second fiber blanket is consistent with the height of the oven door, so that the second fiber blanket is integrally arranged in the height direction of the oven door.

10. The metallurgical hot rolling heating furnace discharge furnace door of claim 1, wherein: the connecting components of the same second fiber blanket are arranged correspondingly.