CN219223321U

CN219223321U - Circulation pipe lining of refining steel furnace

Info

Publication number: CN219223321U
Application number: CN202320253826.3U
Authority: CN
Inventors: 徐静皋; 徐鎏
Original assignee: Jiangsu Tianlong Casting And Forging Co ltd
Current assignee: Jiangsu Tianlong Casting And Forging Co ltd
Priority date: 2023-02-20
Filing date: 2023-02-20
Publication date: 2023-06-20
Anticipated expiration: 2033-02-20

Abstract

The utility model provides a circulating pipe lining of a refining steel furnace, which comprises a steel furnace shell and a circulating pipe, wherein the lower side of the steel furnace shell is provided with the circulating pipe, a lining piece is arranged in the circulating pipe, a filling material layer is arranged between the lining piece and the inner wall of the circulating pipe, an upper clamping plate is arranged at the upper end of the lining piece, a lower clamping plate is arranged at the lower end of the lining piece, and an anchoring plate is arranged on the annular side surface of the lining piece.

Description

Circulation pipe lining of refining steel furnace

Technical Field

The utility model relates to a circulating pipe lining of a refined steel furnace, belonging to the technical field of steel furnaces.

Background

The refining steel furnace mainly comprises a dipping pipe, a circulating pipe, a lower groove, a middle groove, an upper groove and a hot top cover, wherein the whole molten steel metallurgical reaction is carried out in the vacuum groove built with the refractory lining, when molten steel is processed, lining ring bricks in the circulating pipe float easily under the friction drive of high-speed flowing molten steel under the high-speed impact of rising molten steel, so that gaps appear between lining refractory materials, so that molten steel penetrates into the lower groove to damage the lining ring bricks, and the circulating pipe lining of the refining steel furnace is urgently needed to solve the problems.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide the circulating pipe lining of the refining steel furnace, so as to solve the problems in the prior art.

In order to achieve the above object, the present utility model is realized by the following technical scheme: the utility model provides a circulation pipe inside lining of refining steel stove, includes steel furnace shell, circulation pipe and operational layer, steel furnace shell downside is provided with the circulation pipe, the inside operational layer that is provided with of steel furnace shell, be provided with the heat preservation between operational layer and the steel furnace shell, the inside lining piece that is provided with of circulation pipe, be provided with the filling material layer between lining piece and the circulation pipe inner wall, lining piece upper end is provided with the cardboard, lining piece lower extreme is provided with down the cardboard, lining piece annular side is provided with the anchor board.

Further, the lining piece is arranged to be of a hollow cylindrical pipe structure, and the height of the lining piece is the same as that of the circulating pipe.

Further, the upper clamping plate and the lower clamping plate are identical in specification, the upper clamping plate, the lower clamping plate and the lining piece are of an integral pouring molding structure, and the diameters of the upper clamping plate and the lower clamping plate are larger than the diameter of the lining piece.

Further, the lower end face of the lower clamping plate is flush with the lower end face of the circulating pipe, a chamfer chute is arranged at the inner diameter opening of the lower clamping plate, the upper end face of the upper clamping plate is attached to the lower end face of the working layer, and a refractory filler is filled at the joint of the upper end face of the upper clamping plate and the lower end face of the working layer.

Further, the anchor plate is provided with three groups, and three groups of anchor plates are equidistantly arranged on the annular side face of the lining piece, and three groups of anchor plates and the lining piece are integrally cast.

Further, a plurality of groups of ramming material notches are formed in the edge of each group of the anchoring plates at equal angles, and the ramming material notches are of a semicircular structure.

By adopting the technical scheme, the utility model has the beneficial effects that: according to the circulating pipe lining of the refining steel furnace, through the lining piece, the upper clamping plate, the lower clamping plate and the anchoring plate, the design structure is reasonable, the gap generated by the conventional lining ring brick masonry can be eliminated by adopting the integrally pouring prefabricated structure, the high-speed impact of rising molten steel on the circulating pipe lining can be reduced, the integral structure is more stable and reliable, the service life is greatly prolonged, the problem that the lining ring brick of the circulating pipe lining of the original refining steel furnace floats upwards under the friction drive of molten steel flowing at high speed easily, gaps appear between lining refractory materials, so that molten steel penetrates into the gaps at the lower part of the lining ring brick to damage the lower part of the lining ring brick is solved, and the structural stability of the circulating pipe lining is improved.

Drawings

Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a schematic view of the structure of a circulating pipe liner of a refining furnace according to the present utility model;

FIG. 2 is a front cross-sectional view of a circulating pipe liner of a refining furnace of the present utility model;

FIG. 3 is a schematic structural view of a lining member in a circulating pipe lining of a refining furnace according to the present utility model;

in the figure: 1-steel furnace shell, 2-circulation pipe, 3-working layer, 4-heat preservation layer, 5-filler layer, 6-lining piece, 7-chamfer chute, 8-upper clamping plate, 9-lower clamping plate, 10-anchor plate, 11-ramming notch.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

Referring to fig. 1-3, the present utility model provides a technical solution: the utility model provides a circulation pipe inside lining of refining steel stove, including steel stove shell 1, circulation pipe 2 and operational layer 3, steel stove shell 1 downside is provided with circulation pipe 2, steel stove shell 1 inside is provided with operational layer 3, be provided with heat preservation 4 between operational layer 3 and the steel stove shell 1, circulation pipe 2 inside is provided with inside lining member 6, be provided with packing layer 5 between inside lining member 6 and the circulation pipe 2 inner wall, the upper end of lining member 6 is provided with cardboard 8, the lower extreme of lining member 6 is provided with down cardboard 9, the annular side of lining member 6 is provided with anchor plate 10, this design has solved the inside lining ring brick of the inside lining of circulation pipe 2 of original refining steel stove and has floated very easily under the molten steel friction drive of high-speed flow, cause the gap to appear between the lining refractory, so that molten steel penetrates, cause the problem of lower part groove damage.

The lining member 6 is provided in a hollow cylindrical tube structure, and the height of the lining member 6 is the same as that of the circulating tube 2.

The upper clamping plate 8 and the lower clamping plate 9 are identical in specification, the upper clamping plate 8, the lower clamping plate 9 and the lining piece 6 are integrally cast to form a structure, and the diameters of the upper clamping plate 8 and the lower clamping plate 9 are larger than the diameter of the lining piece 6.

The lower end face of the lower clamping plate 9 is flush with the lower end face of the circulating pipe 2, a chamfer chute 7 is arranged at the inner diameter of the lower clamping plate 9, the upper end face of the upper clamping plate 8 is attached to the lower end face of the working layer 3, and refractory filler is filled at the joint of the upper end face of the upper clamping plate 8 and the lower end face of the working layer 3.

The anchor plates 10 are provided with three groups, the three groups of riveting plates are equidistantly arranged on the annular side face of the lining piece 6, and the three groups of anchor plates 10 and the lining piece 6 are integrally cast.

A plurality of groups of ramming material notches 11 are formed at equal angles at the edge of each group of anchor plates 10, and the ramming material notches 11 are of a semicircular structure.

As an embodiment of the present utility model: firstly, the lining piece 6 is manufactured through pouring, the upper clamping plate 8, the lower clamping plate 9, the anchoring plate 10 and the lining piece 6 are of an integrated pouring molding structure, when the lining piece 6 is assembled, the lining piece 6 is embedded into the circulating pipe 2, the lining piece 6 is fixedly adhered to the inside of the circulating pipe 2 through the filling material layer 5, friction force between the lining piece 6 and the filling material layer 5 can be increased through the anchoring plate 10 and the tamping notch 11, and stability of the lining piece 6 is improved.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a circulation pipe inside lining of refining steel stove, includes steel stove shell, circulation pipe and working layer, its characterized in that: the steel furnace shell downside is provided with the circulation pipe, the inside working layer that is provided with of steel furnace shell, be provided with the heat preservation between working layer and the steel furnace shell, the inside lining piece that is provided with of circulation pipe, be provided with the filler layer between lining piece and the circulation pipe inner wall, lining piece upper end is provided with the cardboard, lining piece lower extreme is provided with down the cardboard, lining piece annular side is provided with the anchor board.

2. The circulating pipe liner of a steel refining furnace of claim 1, wherein: the lining piece is arranged to be of a hollow cylindrical pipe structure, and the height of the lining piece is the same as that of the circulating pipe.

3. The circulating pipe liner of a steel refining furnace of claim 1, wherein: the upper clamping plate and the lower clamping plate are identical in specification, the upper clamping plate, the lower clamping plate and the lining piece are integrally cast to form a structure, and the diameters of the upper clamping plate and the lower clamping plate are larger than the diameter of the lining piece.

4. The circulating pipe liner of a steel refining furnace of claim 1, wherein: the lower end face of the lower clamping plate is flush with the lower end face of the circulating pipe, a chamfer chute is arranged at the inner diameter opening of the lower clamping plate, the upper end face of the upper clamping plate is attached to the lower end face of the working layer, and refractory filler is filled at the joint of the upper end face of the upper clamping plate and the lower end face of the working layer.

5. The circulating pipe liner of a steel refining furnace of claim 1, wherein: the anchor plates are provided with three groups, the three groups of the riveting plates are equidistantly arranged on the annular side face of the lining piece, and the three groups of the anchor plates and the lining piece are integrally cast and formed.

6. The circulating pipe lining of a refining furnace of claim 5, wherein: each group of anchor plate edge equal angle sets up the multiunit and smashes the material notch, smash the material notch and be semi-circular structure.