CN216473318U

CN216473318U - Vacuum tank bottom brick masonry structure

Info

Publication number: CN216473318U
Application number: CN202122588050.4U
Authority: CN
Inventors: 焦智宇; 崔庆阳; 刘雷; 高耸; 赵保群; 谢振京; 张春杰; 吴林林; 韩用宏
Original assignee: Luoyang Lier Functional Materials Co ltd
Current assignee: Luoyang Lier Functional Materials Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-05-10
Anticipated expiration: 2031-10-27

Abstract

A vacuum vessel hearth brick masonry structure comprising: the circular structure built by laying bricks at the bottom of the furnace, the ramming material is wholly annular, the bilateral symmetry of the center of the furnace is provided with the circulating tube, the circulating tube is built by laying bricks by the circulating brick, the circulating tube is close to the inner wall of the tank and is provided with the reinforcing brick at the bottom of the furnace at the intersection of the ramming material, the reinforcing brick at the bottom of the furnace is connected with the circulating tube by laying bricks, the arc ramming material is arranged in the direction of the inner wall of the tank far away from the circulating tube, and the arc ramming material is in contact fit with the excircle of the circulating tube. The beneficial effects of the utility model are: the bottom reinforcing brick replaces ramming material at the triangular area of the circular flow tube at the bottom of the tank, the circular brick is fixed, the circular brick is prevented from moving, the anti-scouring capacity is improved, the circular brick, the ramming material and the bottom brick of the tank are effectively connected, the building and the positioning are convenient, and the service life is ensured.

Description

Vacuum tank bottom brick masonry structure

Technical Field

The utility model relates to the technical field of RH vacuum tanks, in particular to a furnace bottom brick masonry structure of an RH vacuum tank.

Background

RH system equipment is a molten steel secondary refining process equipment for producing high-quality steel. The whole molten steel metallurgical reaction is carried out in a vacuum tank with a refractory lining. The lower part of the vacuum tank is provided with two immersion pipes with refractory linings, and the upper part is connected with a hot bent pipe.

Before the molten steel is treated, the dip pipe is immersed into the molten steel of the steel ladle to be treated. When the vacuum vessel is evacuated, the atmospheric pressure on the surface of the molten steel forces the molten steel to flow from the dip tube into the vacuum vessel. And two dip pipes communicated with the vacuum tank, one is an ascending pipe, and the other is a descending pipe. Because the ascending pipe continuously blows argon gas into the molten steel through the argon gas pipe, a higher static pressure difference is generated relative to the descending pipe without blowing argon gas, so that the molten steel enters from the ascending pipe and flows to the descending pipe through the lower part of the vacuum tank, and the process is continuously circulated and repeated. In a vacuum state, argon, hydrogen, carbon monoxide and other gases flowing through the vacuum channel steel water are pumped away in the molten steel circulation process. Meanwhile, the molten steel entering the vacuum tank also carries out a series of metallurgical reactions, such as carbon-oxygen reaction and the like, and the molten steel is purified by circularly degassing and refining.

The tank bottom is an important component of the whole vacuum tank smelting system, and because the triangular area of the circulating pipe at the tank bottom is the place where the ramming material, the brick at the tank bottom and the large wall brick are jointed and is a weak link of the refractory material of the RH vacuum chamber, the state of the brick at the tank bottom directly influences the refining efficiency and the service life of the RH refining furnace.

The existing building method of the triangular area of the tank bottom circulating pipe is as follows: the ring bricks and the hearth bricks are filled with ramming materials, the large wall bricks are covered and compacted at the positions close to the large wall, and the periphery of the ring bricks of the masonry structure is completely filled with the ramming materials, so that the ring bricks are easy to loosen due to molten steel scouring in the refining process, gaps are generated, steel penetration is caused, and the service life is seriously influenced.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to improve the brick building structure of the triangular area of the circulating pipe at the bottom of the tank, transform the weak link at the joint, avoid the loosening of the ring bricks caused by molten steel scouring and prolong the service life.

In order to achieve the purpose, the utility model adopts the following technical scheme: a vacuum vessel hearth brick masonry structure comprising: the circular structure built by laying bricks at the bottom of the furnace, the ramming material is wholly annular, the bilateral symmetry of the center of the furnace is provided with the circulating tube, the circulating tube is built by laying bricks by the circulating brick, the circulating tube is close to the inner wall of the tank and is provided with the reinforcing brick at the bottom of the furnace at the intersection of the ramming material, the reinforcing brick at the bottom of the furnace is connected with the circulating tube by laying bricks, the arc ramming material is arranged in the direction of the inner wall of the tank far away from the circulating tube, and the arc ramming material is in contact fit with the excircle of the circulating tube.

The upper surface of the ramming material, the upper surface of the reinforcing brick at the bottom of the furnace, the upper surface of the circulating pipe and the upper surface of the arc ramming material are coplanar with the upper surface of the bottom of the furnace.

The circle center of the circulating pipe and the circle center of the furnace bottom are on the same diameter.

The tank bottom brick is fixedly connected with the furnace bottom reinforcing brick through masonry.

The contact surface of the furnace bottom reinforcing brick and the circulating tube is provided with a cambered surface which is matched with the excircle of the circulating tube in contact with the cambered surface.

The radian of the arc-shaped ramming material is larger than 180 degrees.

The utility model has the beneficial effects that: the furnace bottom reinforcing bricks replace ramming materials and fix the ring bricks, the ring bricks are prevented from shifting, the anti-scouring capacity is improved, the ring bricks, the ramming materials and the groove bottom bricks are effectively connected, the building and the positioning are convenient, and the service life is ensured.

Drawings

FIG. 1 is a top view of the masonry structure of the present invention.

FIG. 2 is a top view of a conventional furnace bottom bricklaying structure.

In the figure: 1. the furnace comprises a furnace bottom, 2, a circulating pipe, 3, a ramming material, 4, a furnace bottom reinforcing brick, 5 and an arc ramming material.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the drawings in the specification, and it should be noted that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 2, a vacuum vessel hearth brick masonry structure includes: stove bottom 1, circulating pipe 2, ramming mass 3 and stove bottom reinforce brick 4, stove bottom 1 be the circular structure that the tank bottom brick was built by laying bricks or stones, stove bottom 1 periphery is equipped with ramming mass 3 with the crossing department of cell body inner wall, ramming mass 3 whole be the annular, 1 centre of a circle bilateral symmetry in stove bottom is equipped with circulating pipe 2, circulating pipe 2 is built by laying bricks or stones by the circulating brick and is formed, circulating pipe 2 is close to cell body inner wall and is equipped with stove bottom reinforcing brick 4 with the crossing department of ramming mass 3, the stove bottom strengthen brick 4 and build by laying bricks or stones with circulating pipe 2 and be connected, keep away from cell body inner wall direction at circulating pipe 2 and be equipped with arc ramming mass 5, arc ramming mass 5 and the cooperation of circulating pipe 2 excircle contact. The upper surface of the ramming material 3, the upper surface of the furnace bottom reinforcing brick 4, the upper surface of the circulating pipe 2 and the upper surface of the arc ramming material 5 are coplanar with the upper surface of the furnace bottom 1. The circle center of the circulating pipe 2 and the circle center of the furnace bottom 1 are on the same diameter. The groove bottom brick is fixedly connected with the furnace bottom reinforcing brick 4 through masonry. The contact surface of the furnace bottom reinforcing brick 4 and the circulating tube 2 is provided with a cambered surface, and the cambered surface is matched with the excircle of the circulating tube 2 in contact. The radian of the arc-shaped ramming material 5 is larger than 180 degrees.

In the use process of the utility model, the furnace bottom reinforcing brick 4 is adopted to replace the ramming material 3 in the original triangular area of the circular flow tube at the bottom of the furnace, the cambered surface of the furnace bottom reinforcing brick 4 is matched with the outer cambered surface of the circular flow tube 2 for masonry connection, the side surface of the furnace bottom reinforcing brick 4 is masonry connected with the furnace bottom brick used for masonry of the furnace bottom 1, the stability of the triangular area at the bottom of the furnace is enhanced by a masonry mode, the loosening of the circular flow tube 2 circular brick caused by molten steel scouring is reduced, and the service life is ensured.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

The present invention is not described in detail in the prior art.

Claims

1. A vacuum vessel hearth brick masonry structure comprising: stove bottom (1), circulating pipe (2), ramming mass (3) and stove bottom reinforce brick 4, characterized by: stove bottom (1) be the circular structure that the tank bottom brick was built by laying bricks or stones, stove bottom (1) periphery is equipped with ramming mass (3) with the crossing department of cell body inner wall, ramming mass (3) whole be the annular, stove bottom (1) centre of a circle bilateral symmetry is equipped with circulating pipe (2), circulating pipe (2) are built by laying bricks or stones by the circulating brick and are formed, circulating pipe (2) are close to cell body inner wall and are equipped with stove bottom reinforcing brick (4) with ramming mass (3) crossing department, the stove bottom reinforcing brick (4) build by laying bricks or stones with circulating pipe (2) and be connected, keep away from cell body inner wall direction at circulating pipe (2) and are equipped with arc ramming mass (5), arc ramming mass (5) and circulating pipe (2) excircle contact cooperation.

2. The vacuum vessel hearth brick masonry structure according to claim 1, characterized in that: the upper surface of the circulating pipe (2), the upper surface of the ramming material (3), the upper surface of the furnace bottom reinforcing brick (4) and the upper surface of the arc ramming material (5) are coplanar with the upper surface of the furnace bottom (1).

3. The vacuum vessel hearth brick masonry structure according to claim 1, characterized in that: the circle centers of the two circulating pipes (2) and the circle center of the furnace bottom (1) are on the same diameter.

4. The vacuum vessel hearth brick masonry structure according to claim 1, characterized in that: the groove bottom brick and the furnace bottom reinforcing brick (4) are fixedly connected through masonry.

5. The vacuum vessel hearth brick masonry structure according to claim 1, characterized in that: the contact surface of the furnace bottom reinforcing brick (4) and the circulating pipe (2) is provided with a cambered surface, and the cambered surface is matched with the excircle of the circulating pipe (2) contacted with the cambered surface.

6. The vacuum vessel hearth brick masonry structure according to claim 1, characterized in that: the radian of the arc-shaped ramming material (5) is larger than 180 degrees.