CN220907532U

CN220907532U - Converter bottom blowing air brick with dip angle rotational flow bundling pipe

Info

Publication number: CN220907532U
Application number: CN202322436095.9U
Authority: CN
Inventors: 王鹏; 李勇; 李俊男; 满斯林; 范永文; 韩鹏
Original assignee: Anshan He Feng Refractory Material Co ltd; University of Science and Technology Liaoning USTL
Current assignee: Anshan He Feng Refractory Material Co ltd; University of Science and Technology Liaoning USTL
Priority date: 2023-09-08
Filing date: 2023-09-08
Publication date: 2024-05-07
Anticipated expiration: 2033-09-08

Abstract

The utility model discloses a converter bottom blowing air brick with an inclined angle rotational flow bundling pipe, which relates to the technical field of metallurgical fire resistance and comprises a refractory brick, wherein an air inlet pipe and a bundling pipe body are respectively arranged in the refractory brick, one ends of the air inlet pipe and the bundling pipe body, which are far away from each other, are respectively communicated with the refractory brick in a penetrating way, three layers of annular bundling pipes are arranged in the refractory brick, inclined angles are arranged between the outer layer and the inner layer of bundling pipes and the refractory brick, when the converter bottom is blown, stirring of a molten pool can be enhanced, and blowing jet flows with different angles can be improved.

Description

Converter bottom blowing air brick with dip angle rotational flow bundling pipe

Technical Field

The utility model relates to the technical field of metallurgical refractories, in particular to a converter bottom blowing air brick with an inclined rotational flow bundling pipe.

Background

The converter combined blowing process is an important link of converter steelmaking, has profound effects on the production cost, the product quality and the production organization of a steel plant, and the arrangement mode of bottom blowing elements of the converter, the number of the bottom blowing elements and the like can affect the metallurgical effect on the stirring of a molten pool. The selection, the number and the arrangement of the bottom blowing ventilation elements are difficult problems for designers and production line technicians no matter new, reconstruction or operation of the converter, so that the improvement of the combined blowing effect of the converter is an important subject for steelmaking of the converter.

The prior commonly used bottom blowing air supply element mainly has two structural forms, one is a nozzle type bottom blowing air supply element mainly comprising circular seams (double circular seams and three circular seams), and the main disadvantage is that the air quantity adjusting range is relatively small, and the air quantity can not be adjusted in a larger range according to the steel grade and smelting process requirements; the other is a brick-type air supply element in the form of directional multi-microtube, which has the greatest advantages of large air quantity adjusting range, good safety, capability of selecting the pipe diameter and the pipe number inside the directional multi-hole air supply element according to the maximum and minimum stirring intensity required by the process, and the defects of consistent pipe air outlet diameter, consistent blowing direction and unobvious bottom blowing stirring effect on the converter.

The utility model patent No. CN200620041505.3 discloses a tilting hole type air brick for converter bottom blowing, which comprises refractory bricks and metal pipes, wherein the metal pipes are arranged in the refractory bricks and tilt towards the same direction, and only one circle of metal pipes are used for blowing gas, so that the stirring effect on a molten pool is not obvious.

The utility model of Chinese patent application No. CN201120544834.0 discloses a novel converter bottom blowing air supply element, which uniformly distributes bundling pipes in refractory materials, and the bundling pipes are arranged around an air inlet main air path, but the direction of an air inlet and an air outlet of the laying mode is consistent, the air inlet is vertical to the bottom of a refractory brick, the direction of air outlet blowing air flow is consistent in the stirring process, three layers of blowing air are not mutually interfered, and the stirring effect is poor.

Therefore, in order to strengthen the stirring of a converter molten pool, improve the flow and mass transfer and improve the reaction efficiency, a novel converter bottom air brick is necessary to be invented, the stirring and dynamic conditions of the molten pool can be effectively improved, and the process requirements of smelting high-specification steel types are met.

Disclosure of utility model

The utility model mainly aims to provide a converter bottom blowing air brick with an inclined rotational flow bundling pipe, which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

The utility model provides a converter bottom blowing air brick with spiral-flow bundling pipe of inclination, includes resistant firebrick, intake pipe and bundling body have been installed respectively to resistant firebrick's inside, intake pipe and bundling body keep away from each other one end respectively with resistant firebrick run through and communicate with each other, bundling body is by a plurality of inlayer bundling pipes, a plurality of middle level bundling pipes and a plurality of outer bundling pipes, its a plurality of inlayer bundling pipes, middle level bundling pipes and outer bundling pipes are the whole row of ring respectively and distribute.

Preferably, the horizontal included angle between the outer layer bundling pipes and the refractory bricks is 75 degrees.

Preferably, the middle layer bundling pipes are respectively perpendicular to the refractory bricks.

Preferably, the inner layer bundling pipes are respectively crossed with the outer layer bundling pipes and form 20-30 degrees.

Preferably, the number of the inner layer bundling pipes is 4-6, the number of the middle layer bundling pipes is 7-10, and the number of the outer layer bundling pipes is 13-15.

Preferably, the pipe diameters of the inner layer bundling pipes are 20-30mm, the pipe diameters of the middle layer bundling pipes are 50-60mm, and the pipe diameters of the outer layer bundling pipes are 80-100mm.

Compared with the prior art, the utility model has the following beneficial effects:

The inside of the refractory brick is provided with three layers of annular bundling pipes, the inclination angles are arranged between the outer layer and the inner layer bundling pipes and the refractory brick, when the converter is used for blowing, the stirring of a molten pool can be enhanced, the flow and mass transfer of the molten pool can be improved, and because the inner layer bundling pipe and the outer layer bundling pipe are provided with the inclination angles, the air outlet exposed out of the refractory brick is elliptical, the stirring and dynamic conditions of the molten pool can be better improved.

Drawings

FIG. 1 is a schematic view of a bottom blowing air brick of a converter with a dip angle swirl cluster tube;

FIG. 2 is a schematic view of a bundling tube body structure of a converter bottom blowing air brick with an inclined rotational flow bundling tube;

Fig. 3 is an enlarged schematic view of a position a of a bottom blowing air brick of a converter with an inclined rotational flow bundling pipe.

In the figure: 1. refractory bricks; 2. an air inlet pipe; 3. a bundling tube body; 31. an inner layer bundling pipe; 32. middle layer bundling pipe; 33. an outer layer bundling tube.

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.

As shown in fig. 1-3, a converter bottom blowing air brick with inclined rotational flow bundling pipe comprises a refractory brick 1, wherein an air inlet pipe 2 and a bundling pipe body 3 are respectively arranged in the refractory brick 1, one ends of the air inlet pipe 2 and the bundling pipe body 3, which are far away from each other, are respectively communicated with the refractory brick 1 in a penetrating way, the bundling pipe body 3 is formed by a plurality of inner layer bundling pipes 31, a plurality of middle layer bundling pipes 32 and a plurality of outer layer bundling pipes 33, and the inner layer bundling pipes 31, the middle layer bundling pipes 32 and the outer layer bundling pipes 33 are respectively distributed in a circular array.

Specifically, the horizontal included angle between the outer layer cluster tubes 33 and the refractory bricks 1 is 75 degrees.

Specifically, the middle layer cluster pipes 32 are perpendicular to the refractory bricks 1.

Specifically, the inner layer bundling pipes 31 intersect with the outer layer bundling pipes 33 respectively at 20-30 °.

Specifically, the number of inner layer bundling pipes 31 is 4-6, the number of middle layer bundling pipes 32 is 7-10, and the number of outer layer bundling pipes 33 is 13-15.

Specifically, the pipe diameters of the inner layer bundling pipes 31 are 20-30mm, the pipe diameters of the middle layer bundling pipes 32 are 50-60mm, and the pipe diameters of the outer layer bundling pipes 33 are 80-100mm.

Working principle: when the converter is in bottom blowing operation, the air inlet pipe 2 at the bottom of the refractory brick 1 is connected with an air supply pipeline, air is blown into the converter through the bundling pipe body 3 in the refractory brick 1 to stir molten steel, and because the bundling pipe body 3 is arranged at an inclined angle with the bottom of the refractory brick 1, interference is formed between the air flow and the air flow in the air supply stirring process, and jet flows at different angles can improve the flow and mass transfer of a molten pool.

The circuit, the electronic components and the control module are all in the prior art, and can be completely realized by a person skilled in the art, and needless to say, the protection of the utility model does not relate to the improvement of software and a method.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a converter bottom blowing air brick with inclination whirl bundling pipe, includes resistant firebrick (1), its characterized in that: the inside of resistant firebrick (1) has installed intake pipe (2) and bundling body (3) respectively, intake pipe (2) and bundling body (3) keep away from each other one end run through with resistant firebrick (1) respectively and communicate with each other, bundling body (3) are by a plurality of inlayer bundling pipe (31), a plurality of middle level bundling pipe (32) and a plurality of outer bundling pipe (33), and a plurality of its inlayer bundling pipe (31), middle level bundling pipe (32) and outer bundling pipe (33) are the whole distribution of ring shape respectively.

2. The rotary furnace bottom blowing air brick with inclined rotational flow bundling pipe according to claim 1, wherein the rotary furnace bottom blowing air brick is characterized in that: the horizontal included angle between the outer layer bundling pipes (33) and the refractory bricks (1) is 75 degrees.

3. The rotary furnace bottom blowing air brick with inclined rotational flow bundling pipe according to claim 1, wherein the rotary furnace bottom blowing air brick is characterized in that: the middle layer cluster pipes (32) are respectively perpendicular to the refractory bricks (1).

4. The rotary furnace bottom blowing air brick with inclined rotational flow bundling pipe according to claim 1, wherein the rotary furnace bottom blowing air brick is characterized in that: the inner layer bundling pipes (31) are respectively crossed with the outer layer bundling pipes (33) and form 20-30 degrees.

5. The rotary furnace bottom blowing air brick with inclined rotational flow bundling pipe according to claim 1, wherein the rotary furnace bottom blowing air brick is characterized in that: the number of the inner layer bundling pipes (31) is 4-6, the number of the middle layer bundling pipes (32) is 7-10, and the number of the outer layer bundling pipes (33) is 13-15.

6. The rotary furnace bottom blowing air brick with inclined rotational flow bundling pipe according to claim 1, wherein the rotary furnace bottom blowing air brick is characterized in that: the pipe diameters of the inner layer bundling pipes (31) are 20-30mm, the pipe diameters of the middle layer bundling pipes (32) are 50-60mm, and the pipe diameters of the outer layer bundling pipes (33) are 80-100mm.