CN205576189U - Blast furnace shaft upper portion links up position plain noodles cooling wall - Google Patents

Abstract

Provided is a smooth stave at the joint part of the upper part of the blast furnace body, which consists of a stave matrix and cooling water pipes in the stave matrix; the stave matrix consists of an inverted L-shaped smooth stave matrix at the lower part and a semi-U-shaped smooth stave at the upper part The stave base is connected and combined; the upper semi-U-shaped smooth stave base is closely connected with the furnace throat steel brick at the furnace throat, and the lower inverted L-shaped smooth stave base is closely connected with the middle and upper staves of the furnace body; The middle and lower parts of the inverted L-shaped smooth stave matrix and the upper semi-U-shaped smooth stave matrix are respectively provided with positioning bolt holes; the cooling water pipe is composed of S-shaped serpentine pipes in the stave matrix; the material of the stave matrix is The material of ductile cast iron and cooling water pipe is stainless steel; its advantages are: effectively relieve the erosion of high-speed gas flow on the cooling wall, prolong the service life of furnace throat steel bricks, cooling walls and blast furnace, and save production costs.

Description

A smooth stave at the joint part of the upper part of the furnace body of a blast furnace

Technical field:

The utility model relates to the technical field of ironmaking equipment, in particular to a cooling wall on the upper part of a blast furnace body.

Background technique:

In the prior art, the connecting part of the stave on the upper body of the blast furnace with a thick lining structure and the furnace throat steel brick is a weak part. Due to the long-term erosion of the gas flow during the production process, the stave at this part is often damaged seriously, and the gas flow It penetrates into the cold surface of the stave and throat steel bricks, burns the stave and throat steel bricks, and causes the furnace shell to glow red or even crack. At present, in the design of blast furnaces, the stave on the upper part of the furnace body and the throat steel brick are connected by an inverted stave as the connection, but it still cannot effectively solve the above-mentioned problems. Due to the above problems in production, the blast furnace is often shut down for maintenance, and even affects the service life of the blast furnace, which brings many problems to the continuous production of the blast furnace.

Invention content:

The purpose of the utility model is to overcome the deficiencies in the prior art, and provide a smooth cooling stave at the joint part of the upper part of the blast furnace body with long service life, high efficiency and energy saving.

The technical scheme adopted by the utility model to solve the problem is: to provide a smooth cooling stave at the joint part of the upper part of the blast furnace body. , the inner side of the blast furnace contour line, the lower part of the furnace throat steel brick, the stave matrix on the upper part of the stave in the middle and upper part of the furnace body, and the cooling water pipe in the stave matrix; the characteristics are: the stave matrix is composed of the lower part The L-shaped smooth stave matrix and the upper semi-U-shaped smooth stave matrix are connected and combined; the upper semi-U-shaped smooth stave matrix is closely connected with the furnace throat steel brick at the furnace throat, and the lower part is inverted L-shaped The smooth stave matrix is closely connected with the middle and upper staves of the furnace body; the inverted L-shaped smooth stave matrix and the upper semi-U-shaped smooth stave matrix are respectively provided with positioning bolt holes in the middle and lower parts; the cooling water pipe is connected by the stave It is composed of S-shaped serpentine tubes in the matrix; its two ends protrude from one end of the stave boss; it is also characterized in that: the material of the stave matrix is ductile iron, and the material of the cooling water pipe is stainless steel; There are a plurality of positioning bolt holes; the serpentine tube in the stave matrix adopts S backgammon type; the stave matrix is a combination of an inverted L-shaped smooth stave matrix and a semi-U-shaped smooth stave matrix; a single The upper part of the inverted L-shaped cooling stave is closely connected with the steel brick of the furnace throat, and the lower part is closely connected with the cooling stave in the middle and upper part of the furnace body.

The beneficial effects of the utility model are: the combination of smooth surface special-shaped staves (the combination of inverted L shape and half U shape) or the single inverted L-shaped staves are used to replace the existing inverted staves or the existing ordinary staves. The cooling wall of the boss can form an effective diversion effect on the gas flow at this part, effectively relieve the erosion of the cooling wall by the high-speed gas flow, prolong the service life of the cooling wall with water cooling at this part, and prolong the furnace throat steel The service life of the bricks is extended, and the life of the blast furnace is also extended, which saves production costs.

Description of drawings

Fig. 1 is a schematic view of the structure of a smooth stave combined with an inverted L shape and a half U shape according to an embodiment of the present invention;

Fig. 2 is the single inverted L-shaped stave structure schematic diagram of the utility model embodiment;

Fig. 3 is a schematic diagram of the S-shaped backgammon serpentine tube in Fig. 1 .

In the attached drawings: 1. Inverted L-shaped smooth stave matrix; 2. Semi-U-shaped smooth stave matrix; 3. S-shaped serpentine tube in the stave; 4. Positioning bolt holes; 5. Blast furnace shell; 6 . Throat steel bricks at the furnace throat; 7. Blast furnace inner profile; 8. Middle and upper staves of the furnace body.

detailed description:

Embodiment 1: The utility model embodiment 1 will be described in further detail below in conjunction with the accompanying drawings: a smooth cooling stave at the joint part of the upper part of the blast furnace body as shown in Fig. 1 and Fig. The inner side of the profile line 7, the lower part of the furnace throat steel brick 6 at the furnace throat, the stave matrix at the upper part of the stave 8 in the middle and upper part of the furnace body, and the cooling water pipe in the stave matrix; the stave matrix is composed of an inverted L-shaped smooth surface at the lower part The stave matrix 1 and the upper semi-U-shaped smooth stave matrix 2 are connected and combined; the upper semi-U-shaped smooth stave matrix 2 is closely connected with the furnace throat steel brick 6 at the furnace throat, and the lower inverted L-shaped The smooth stave matrix 1 is closely connected with the middle and upper stave 8 of the furnace body; the middle and lower parts of the inverted L-shaped smooth stave matrix 1 and the upper half-U-shaped smooth stave matrix 2 are respectively provided with positioning bolt holes 4; The cooling water pipe is composed of S-shaped serpentine pipes 3 in the stave matrix; the cooling water pipe is located in the stave matrix, closely combined with the smooth stave matrix, and its two ends protrude from one end of the stave boss. The base material of the stave is ductile cast iron, and the material of the cooling water pipe is stainless steel. The stave matrix is a combination of an inverted L-shaped smooth stave matrix 1 and a semi-U-shaped smooth stave matrix 2. There are multiple positioning bolt holes 4 for the stave, and the serpentine tube in the stave matrix adopts S backgammon type.

Embodiment 2: The utility model embodiment 2 will be described in further detail below in conjunction with the accompanying drawings: a smooth stave at the joint part of the upper part of the blast furnace body as shown in Fig. 2 and Fig. 3 includes a blast furnace shell 5 and a The inner side of the profile line 7, the lower part of the furnace throat steel brick 6 at the furnace throat, the stave matrix at the upper part of the stave 8 in the middle and upper part of the furnace body, and the cooling water pipe in the stave matrix; the stave matrix is composed of an inverted L-shaped smooth surface at the lower part The stave matrix 1 is composed of; the upper part of the inverted L-shaped smooth stave matrix 1 is closely connected with the furnace throat steel brick 6 at the furnace throat, and the lower part of the inverted L-shaped smooth stave matrix 1 is closely connected with the middle and upper stave 8 of the furnace body ; The middle and lower parts of the inverted L-shaped smooth stave base 1 are respectively provided with positioning bolt holes 4; the cooling water pipe is composed of an S-shaped serpentine pipe 3 in the stave base; Tightly combined, its two ends protrude from one end of the stave boss. The base material of the stave is ductile cast iron, and the material of the cooling water pipe is stainless steel. The stave base is an inverted L-shaped smooth stave base 1 with multiple positioning bolt holes 4, and the serpentine tube in the stave base adopts S-backgammon type.

Claims (6)

1. A smooth stave at the joint part of the upper part of the furnace body of a blast furnace, including the lower part of the furnace throat steel brick (6) located on the inside of the blast furnace shell (5), the inner contour line of the blast furnace (7), the furnace throat, and the middle of the furnace body. The upper stave base (8) is composed of the stave matrix on the upper part and the cooling water pipe in the stave base; it is characterized in that: the stave base is composed of the lower inverted L-shaped smooth stave base (1) and the upper half U-shaped smooth surface The stave matrix (2) is connected and combined; the upper semi-U-shaped smooth stave matrix (2) is closely connected with the furnace throat steel brick (6) at the furnace throat, and the lower inverted L-shaped smooth stave matrix ( 1) It is closely connected with the middle and upper stave (8) of the furnace body; the middle and lower parts of the inverted L-shaped smooth stave base (1) and the upper semi-U-shaped smooth stave base (2) are respectively provided with positioning bolt holes (4); the cooling water pipe is composed of an S-shaped serpentine pipe (3) in the stave matrix; the cooling water pipe is located in the stave matrix and is closely combined with the smooth stave matrix, and its two ends protrude from one end of the stave boss . 2 . The smooth stave at the connecting part of the upper part of the blast furnace shaft as claimed in claim 1 , wherein the material of the stave matrix is ductile cast iron, and the material of the cooling water pipe is stainless steel. 3 . 3. A smooth stave at the joint part of the upper part of the blast furnace shaft as claimed in claim 1, characterized in that there are a plurality of positioning bolt holes (4). 4. A smooth stave at the upper joint of the blast furnace shaft as claimed in claim 1, characterized in that: the serpentine tube in the base of the stave adopts an S backgammon type. 5. A smooth stave at the upper joint of a blast furnace body as claimed in claim 1, characterized in that: the stave matrix is an inverted L-shaped smooth stave matrix (1) and a semi-U-shaped smooth stave matrix A combination of (2). 6. A smooth stave at the joint part of the upper part of the blast furnace body as claimed in claim 1, characterized in that: a single inverted L-shaped smooth stave base (1) is used, and its upper part is connected with the furnace throat steel brick (6 ) is tightly connected, and its lower part is closely connected with the stave (8) in the middle and upper part of the furnace body.