CN216923600U

CN216923600U - Wear-resistant air pipe elbow for steel mill blast furnace

Info

Publication number: CN216923600U
Application number: CN202122726321.8U
Authority: CN
Inventors: 万学斌; 谢平; 马立国; 严炼
Original assignee: Wisco Zhongye Industrial Technology Service Co ltd
Current assignee: Wisco Zhongye Industrial Technology Service Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-07-08
Anticipated expiration: 2031-11-09

Abstract

The utility model relates to a wear-resistant air pipe elbow for a blast furnace in a steel mill, which comprises a shell, wherein a containing cavity is arranged in the shell, a pipeline is arranged in the containing cavity, a fire-resistant layer is filled between the outer wall of the pipeline and the inner wall of the shell, a wear-resistant layer is plated on the outer wall of the shell, the left end, the right end and the top end of the shell are both in an open shape, the top end of the shell is connected with a first flange, the right end of the shell is connected with a second flange, and the left end of the shell is connected with a third flange. The utility model provides a wear-resistant air pipe elbow for a steel mill blast furnace, which is simple in structure and convenient to install; before the work, the accessible flange is in the same place hot-blast bustle pipe and blast furnace hearth installation fast, and in addition, the flame retardant coating between pipeline and the shell can play thermal-insulated and the thermal effect of dispersion, and the wearing layer on the shell outer wall can slow down the wearing and tearing of shell, and then increases the life of elbow.

Description

Wear-resistant air pipe elbow for steel mill blast furnace

Technical Field

The utility model relates to the technical field of blast furnaces, in particular to a wear-resistant air pipe elbow for a blast furnace in a steel mill.

Background

The blast furnace air supply device is a device which is positioned at the tail end of a hot air pipeline and is connected between a hot air surrounding pipe and a blast furnace, and comprises an upper corrugated pipe, a lower corrugated pipe, an air pipe elbow, a belly pipe and the like of the blast furnace, and the blast furnace air supply device has the function of sending hot air sent by the hot air surrounding pipe into a blast furnace hearth through an air opening and can also spray fuel to the blast furnace through the air opening.

In a blast furnace air supply device, the air pipe elbow is widely applied and plays a crucial role in the service performance of products. The general working environment of the air pipe elbow is air temperature: 1250 ℃ and air pressure of 0.48MPa are always in a continuous operation environment with high temperature, high pressure and high oxygen enrichment, so the product always belongs to a high-risk product for blast furnace ironmaking, and the product performance is very important, which directly influences the sequential production of blast furnace smelting.

At present, conventional tuber pipe elbow is in the use, and the surface of elbow often can receive the friction that erodees of material, because long-time friction, the elbow part can be worn by the material, and the material is revealed from the pipe and is unfavorable for guarantee elbow life.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model provides a wear-resistant air pipe elbow for a blast furnace in a steel mill, which solves the problems that the surface of the elbow is frequently subjected to scouring friction of materials, the elbow part is worn by the materials due to long-time friction, and the leakage of the materials from the pipe is not beneficial to ensuring the service life of the elbow in the use process of the existing elbow.

In order to achieve the technical purpose, the technical scheme of the utility model is as follows:

the utility model provides a wear-resisting tuber pipe elbow for steel mill blast furnace, includes the shell, be equipped with in the shell and hold the chamber, hold the intracavity and be equipped with the pipeline, the outer wall of pipeline with it has the flame retardant coating to fill between the inner wall of shell, the wearing layer has been plated to the outer wall of shell, the left and right ends and the top of shell are the opening form, the top of shell is connected with flange one, the right-hand member of shell is connected with flange two, the left end of shell is connected with flange three.

Further, the bottom welding of shell has collapsible support.

Furthermore, a support frame is welded at the bottom end of the shell.

Further, the first flange is a clamping flange, and the cross-sectional sizes of the second flange and the third flange are smaller than that of the clamping flange.

Further, the second flange is a circular flange.

Further, the flange III is a peephole flange.

Furthermore, the material of shell is 20g boiler steel.

Furthermore, the wear-resistant layer is made of high manganese steel.

Furthermore, sealing gaskets are arranged on the first flange, the second flange and the third flange.

The utility model has the beneficial effects that: the wear-resistant air pipe elbow for the blast furnace in the steel mill has a simple structure and is convenient to install; before the work, the accessible flange is in the same place hot-blast bustle pipe and blast furnace hearth installation fast, and in addition, the flame retardant coating between pipeline and the shell can play thermal-insulated and the thermal effect of dispersion, and the wearing layer on the shell outer wall can slow down the wearing and tearing of shell, and then increases the life of elbow.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a first schematic structural diagram of a wear-resistant air pipe elbow for a steel mill blast furnace according to an embodiment of the present invention;

FIG. 2 is a second schematic structural diagram of a wear-resistant air duct elbow for a steel mill blast furnace according to an embodiment of the present invention;

FIG. 3 is a third schematic structural diagram of a wear-resistant air duct elbow for a steel mill blast furnace according to an embodiment of the present invention;

FIG. 4 is a fourth schematic structural diagram of a wear-resistant air duct elbow for a steel mill blast furnace according to an embodiment of the present invention;

in the figure: 1. a housing; 2. a pipeline; 21. an inclined tube; 22. a transverse tube; 3. a refractory layer; 4. a first flange; 5. a second flange; 6. a third flange; 7. a wear layer; 8. a retractable stand; 81, a support frame; 9. and a gasket.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

As shown in figure 1, a wear-resisting tuber pipe elbow for steel mill blast furnace, including shell 1, be equipped with in shell 1 and hold the chamber, hold intracavity and be equipped with pipeline 2, it has flame retardant coating 3 to fill between the outer wall of pipeline 2 and the inner wall of shell 1, and wearing layer 7 has been plated to the outer wall of shell 1, and the left and right ends and the top of shell 1 are the opening form, and the top of shell 1 is connected with flange one 4, and the right-hand member of shell 1 is connected with flange two 5, and the left end of shell 1 is connected with flange three 6.

Specifically, the elbow mainly comprises a shell 1, a fire-resistant layer 3 and a pipeline 2, wherein the fire-resistant layer 3 can play a role in heat insulation and heat dispersion, the top end of the elbow can be connected with a hot air surrounding pipe through a flange I4, the right end of the elbow can be connected with a blast furnace hearth through a flange II 5, the left end of the elbow can be connected with a fuel injection device through a flange III 6, and the whole elbow is very convenient to install and disassemble; in addition, the wear-resistant layer 7 of the shell 1 can slow down the abrasion of the shell, and further the service life of the elbow is prolonged.

The present invention also provides the following examples, which are specific.

As shown in fig. 2, in one embodiment, the bottom end of the housing 1 is welded with a retractable stand 8.

In this embodiment, the retractable stand 8 can serve to carry and adjust the height of the elbow mount.

As shown in fig. 3, in one embodiment, a support bracket 81 is welded to the bottom end of the housing 1.

In this embodiment, the supporting frame 81 can play a role of bearing and increase the stability of the installation structure of the elbow.

1-3, in one embodiment, flange one 4 is a clip flange, and flanges two 5 and three 6 each have a cross-sectional dimension that is less than the cross-sectional dimension of the clip flange.

In the embodiment, the first flange 4 is a clamping flange which is mainly used for connecting a hot blast surrounding pipe and is used as an inlet; the second flange 5 is connected with a blast furnace hearth and acts as an outlet; the flange III 6 is connected with a fuel injection device, and the flow rate of gas in the elbow can be adjusted.

As shown in fig. 1-3, in one embodiment, the second flange 5 is a circular flange, the third flange 6 is a peep hole flange, the shell 1 is made of 20g of boiler steel, and the wear layer 7 is made of high manganese steel.

In the embodiment, the circular flange is easy to mount and dismount, and the peephole is arranged on the peephole flange, so that the gas flowing state in the bent pipe can be observed; in addition, 20g of boiler steel has high endurance strength, high oxidation and corrosion resistance and good structural stability, can prolong the service life of the elbow and reduce the abrasion degree of the elbow shell 1.

In one embodiment, as shown in fig. 4, the first flange 4, the second flange 5 and the third flange 6 are provided with gaskets 9.

In the embodiment, the sealing gaskets 9 on the first flange 4, the second flange 5 and the third flange 6 can increase the sealing performance of the elbow in installation.

In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the indicated 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 invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

It should be noted that, in this document, relational terms such as "component" a, "component," and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a wear-resisting tuber pipe elbow for steel mill blast furnace, a serial communication port, includes shell (1), be equipped with in shell (1) and hold the chamber, hold intracavity pipeline (2), the outer wall of pipeline (2) with it has flame retardant coating (3) to fill between the inner wall of shell (1), wearing layer (7) have been plated to the outer wall of shell (1), the left and right ends and the top of shell (1) are the opening form, the top of shell (1) is connected with flange one (4), the right-hand member of shell (1) is connected with flange two (5), the left end of shell (1) is connected with flange three (6).

2. The wear-resistant air pipe elbow for the blast furnace of the steel mill according to claim 1, characterized in that: the bottom welding of shell (1) has collapsible support (8).

3. The wear-resistant air pipe elbow for the blast furnace of the steel mill according to claim 1, characterized in that: the bottom welding of shell (1) has support frame (81).

4. The wear-resistant air pipe elbow for the blast furnace of the steel mill according to claim 1, characterized in that: the first flange (4) is a clamping flange, and the cross-sectional sizes of the second flange (5) and the third flange (6) are smaller than that of the clamping flange.

5. The wear-resistant air pipe elbow for the blast furnace of the steel mill according to claim 1, characterized in that: the second flange (5) is a circular flange.

6. The wear-resistant air pipe elbow for the blast furnace of the steel mill according to claim 1, characterized in that: the third flange (6) is a peephole flange.

7. The wear-resistant air pipe elbow for the blast furnace of the steel mill according to claim 1, characterized in that: the shell (1) is made of 20g of boiler steel.

8. The wear-resistant air pipe elbow for the blast furnace of the steel mill according to claim 1, characterized in that: the wear-resistant layer (7) is made of high manganese steel.

9. The wear-resistant air pipe elbow for the steel mill blast furnace according to any one of claims 4 to 6, characterized in that: and sealing gaskets (9) are arranged on the first flange (4), the second flange (5) and the third flange (6).