CN201659284U - A new type of steel tank wall slope brick and slope structure - Google Patents

Abstract

The utility model relates to a sloping brick of a novel molten steel tank, which is characterized in that an included angle of the side surface and the bottom surface of a thick end of the sloping brick is smaller than 90 degrees and an included angle of the side surface and the top surface of a thin end thereof is larger than 90 degrees. A used sloping structure of the novel molten steel tank is characterized in that the sloping masonry state sequence is as follows: a Q1 sloping brick (8), a Q2 sloping brick (9), a Q3 sloping brick (10), the Q1 sloping brick (8) with a sheet brick, the Q2 sloping brick (9) with a sheet brick and the Q3 sloping brick (10) with a sheet brick, and the sequence is circulated accordingly so as to form the sloping structure with one start and multiple repeating. The utility model leads the slope rate of upward-spinning masonry to be completely consistent, thus being capable of eliminating superstandard horizontal brick joints and superstandard triangle vertical brick joints, and further ensuring the masonry quality. The sloping brick of the novel molten steel tank and the sloping structure thereof eliminate the accident potentials of steel leakage and bleed out, and effectively prolong the service life of the masonry.

Description

A new type of steel tank wall slope brick and slope structure

technical field

The utility model relates to a molten steel tank, in particular to a slope brick and a slope structure for the tank wall of a molten steel tank. the

Background technique

Molten steel tank (also known as ladle, commonly known as big tank, as shown in Figure 1-1, 1-2) is a container for transporting molten steel in the steelmaking process. So far, the working layer of molten steel tank walls built with universal arc bricks has been built with double-headed masonry heads and double helixes at the two trunnions, as shown in Figure 2. Due to the double helix There are inflection points before and after the slope. In the process of upward spiral masonry, there will inevitably be excessive horizontal brick joints and excessive triangular vertical joints at the inflection points. Exceeding the standard horizontal brick joints and exceeding the standard triangular vertical joints are major hidden dangers that lead to steel penetration and steel leakage accidents. The cause of this hidden danger is related to the shape of the slope bricks on the one hand, and has a direct relationship with the masonry structure of the slope on the other hand. the

Contents of the invention

The purpose of this utility model is to provide a new type of steel tank slope brick and slope structure that can completely eliminate the above hidden dangers. the

The new type of slope brick for the molten steel tank is a thin arc-shaped plane with the upper and lower sides, and its longitudinal section is in the shape of a wedge with one end thicker and the other end thinner. The angle between the side of the thin end and the top surface is more than 90 degrees, and the angle between the side of the thick end and the bottom of the slope brick is less than 90 degrees, and the angle between the side of the thin end and the top surface is more than 90 degrees. the

As a special case, the side profile of the slope brick is axisymmetric. At this time, the side of the slope brick presents the shape of an isosceles trapezoid. the

A new type of slope structure for molten steel tanks using the above slope bricks, including slope bricks, thin slice bricks, and basic bricks. The bottom layer is slope bricks, and the top is basic bricks or thin slice bricks. Yes: The order of the masonry state of the slope is: Q1 slope bricks, Q2 slope bricks, Q3 slope bricks, Q1 slope bricks with thin slice bricks on it, Q2 slope bricks with slice bricks on it, Q3 uphill bricks with thin sliced bricks are circulated in this way to form a starting uphill structure that repeats many times. the

The tail end of the Q1 slope brick is at the same height as the head end of the Q2 slope brick, the tail end of the Q2 slope brick is at the same height as the head end of the Q3 slope brick, and the tail end of the Q3 slope brick is at the same height as the top end of the Q3 slope brick. The head end of the Q1 slope brick is of the same height. the

The head and tail junction of the slope is formed between the Q1 slope brick and the Q3 slope brick with the thin slice brick on it, and the Q3 rise brick with the thin slice brick on the Q1 slope brick at the head and tail joint is close to it. The position of the slope brick is provided with a special staggered brick, and the Q1 slope brick head end is added with a staggered brick and the tail end of the Q3 slope brick with a thin slice brick on it is of the same height. the

One of the following two structures is used in the masonry state of the slope at the beginning: 1), Q1 slope bricks combined with staggered bricks and Q3 slope bricks combined with thin slice bricks; 2), Q1 slope bricks front edge Q1 The inclined surfaces of the slope bricks are filled with slopes. the

The utility model makes the slopes of the spiral upward masonry completely consistent, so that the horizontal brick joints and the triangular vertical brick joints exceeding the standard can be completely eliminated, thereby ensuring the quality of the masonry. This new type of slope brick and slope structure of molten steel tank completely eliminates the hidden dangers of steel penetration and steel leakage accidents, and effectively prolongs the service life of masonry. the

Description of drawings

Figure 1-1 is a schematic diagram of the steel tank structure,

Figure 1-2 is a top view of Figure 1-1,

Fig. 2 is the schematic diagram of the slope masonry of the prior art,

Fig. 3-1 is the front view of the slope brick of the prior art,

Figure 3-2 is a top view of Figure 3-1,

Figure 4-1 is the front view of the slope brick of the utility model,

Figure 4-2 is a top view of Figure 4-1,

Figure 5 is a schematic diagram of the slope masonry when the perimeter error is less than 30mm,

Fig. 6 is a schematic diagram of slope masonry when the circumference error is 30mm-60mm. the

In the figure: 1-trunnion, 2-working layer, 3-rising brick, 4-head and tail joint, 5-thin slice brick, 6-staggered joint brick, 7-basic brick, 8-Q1 slope brick, 9 -Q2 uphill brick, 10-Q3 uphill brick, 11-filler. the

Detailed ways

The utility model is further described below in conjunction with the accompanying drawings: as shown in Figures 4-1 and 4-2, the new steel tank slope brick is a flat sheet arc on the upper and lower sides, and is in the shape of a wedge that is thick at one end and thin at the other end. The angle between the thick end side and the top surface of the slope brick is <90 degrees, and the angle between the thin end side and the top surface is >90 degrees, especially: the angle between the thick end side and the bottom surface of the slope brick is <90 degrees, The angle between the side of the thin end and the top surface > 90 degrees. the

As a special case, the side profiles of the rising bricks are symmetrical about the central axis. the

Compared with the slope bricks of the prior art, the shape has changed. The slope bricks used at present are that the bottom surface is perpendicular to the side surface, and the top is a slope to form a single-sided wedge shape. When the basic bricks with a right angle are combined, because the basic bricks are on the slope and the slope bricks are on the plane, a gap with the included angle of the slope angle will be formed on the splicing surface, or the top surface will form when the thin slice bricks are spliced with the slope bricks or slopes. The included angle, or the angle formed on the top surface when the slope bricks are spliced with the basic bricks, makes the basic bricks on it unable to be laid flat, and may cause a gap of more than 4mm, which exceeds the national standard requirement of 2mm. Using the double-sided wedge-shaped slope brick of the utility model, the front and rear joining surfaces of the side surfaces are not perpendicular to the ground. Excess clearances can be eliminated using masonry structures described below. the

A new type of slope structure for molten steel tanks using the above slope bricks, as shown in Figures 5 and 6, including slope bricks, thin slice bricks, and basic bricks. The bottom layer is slope bricks, and the top is basic bricks or thin slices Bricks, the masonry state sequence of the slope is: Q1 slope brick 8, Q2 slope brick 9, Q3 slope brick 10, Q1 slope brick 8 with thin slice brick on it, Q2 slope brick with slice brick on it Brick 9, the Q3 uphill brick 10 of band sheet brick on it, and circulates like this, forms the uphill structure that a beginning repeats repeatedly. the

The tail end of the Q1 slope brick 8 is at the same height as the head end of the Q2 slope brick 9, the tail end of the Q2 slope brick 9 is at the same height as the head end of the Q3 slope brick 10, and the tail end of the Q3 slope brick 10 is at the same height. It is the same height as the head end of the Q1 slope brick 8 with the thin slice brick on it. the

Between the Q1 slope brick 8 and the Q3 slope brick 10 with thin slice bricks on it, the head and tail joint 4 of the slope is formed, and the Q1 slope brick 8 at the head and tail joint 4 is close to its upper belt. The position of the Q3 slope brick 10 of the thin slice brick is provided with special-purpose staggered brick 6, and the Q1 slope brick 8 head end is added with the tail end contour of the Q3 slope brick 10 with the thin slice brick. the

One of the following two structures is used in the masonry state of the slope at the beginning: 1. Q1 slope brick 8 combined with staggered joint brick 6 and Q3 slope brick 10 combined with thin slice brick 5 are spliced; 2. Q1 slope brick 8 The inclined surface of the front Q1 slope brick 8 is filled with a slope. the

The inventor of this kind of masonry structure calls it a multi-spiral masonry structure with one start and equal slope, which makes the joint surfaces of adjacent bricks have good cooperation, and completely eliminates the excessive gap. the

In the actual masonry, start at any trunnion 1, and in an ideal state (when the error of the circumference is 0-30mm), build according to the structure of Figure 5; when the circumference changes (when the error of the circumference is at 30mm-60mm) according to the structure shown in Figure 6. When the error of the perimeter is less than plus or minus 60mm, high-quality masonry quality can be achieved. the

Taking WISCO's 80-ton ladle as an example, the size of the slope bricks is determined as follows:

The size of the new slope brick

Thick end(mm) Thin end (mm) Amount (block) Q1 Slope brick 45 30 12 Q2 Slope brick 60 45 12 Q3 Slope brick 60 75 6 Thin slice brick 45 45 18

The block number K1 of a set of slope bricks is determined:

The block number K1 of a group of slope bricks=the thickness of the basic brick÷the height difference of the slope bricks (the climbing height of one slope brick). the

If the thickness of the basic brick = 90mm, the height difference of the slope brick = 15mm,

Then the number of blocks of a group of slope bricks = 6;

The number of uphill spirals (the number of uphill helix groups) n and the length L of the uphill bricks are determined:

Assuming that the middle radius of the first layer of the working lining of the steel tank wall is RZ, the length of the slope brick is L (the value range is 250mm to 350mm),

Then K1×n=2×3.14×RZ÷L;

K1×n＝6.28×RZ÷L

n can only be an integer, and it is advisable to take 3-6, and it is advisable to take 250-350mm for L. the

The corresponding relationship between the number of slope spirals and the length of slope bricks:

If RZ＝1155.3mm, K1＝6

Then take 4 for n and 300mm+2mm for L, where 2mm is the thickness of the brick joint. the

Similarly, the top of the molten steel tank needs to be brought back to the level with a slope. When pouring along the whole, the tank wall is bricked to the design height, and a spiral head is naturally formed without finding a level. the

When the edge of the molten steel tank is not poured as a whole, it is necessary to level it with slope bricks (the size of the slope brick is designed corresponding to the size of the slope brick). Magnesium fire clay is tightly filled. the

Claims (7)

1. A new type of slope brick for molten steel tank, which is a planar sheet arc above and below, and its longitudinal section is a wedge shape with one end thick and the other end thinner. It is characterized in that: the thick end side of the slope brick and the The included angle of the top surface is <90 degrees, the angle between the thin end side and the top surface is >90 degrees, and the angle between the thick end side and the bottom surface of the slope brick is <90 degrees, and the angle between the thin end side and the top surface is >90 degrees Spend. 2. The slope brick for molten steel tank according to claim 1, characterized in that: the side profile of the slope brick is symmetrical to the central axis. 3. a kind of novel molten steel tank slope structure that has used the described slope brick of claim 1, comprises slope brick, sheet brick, basic brick, and bottom is slope brick, is basic brick or sheet brick above, from It starts at the trunnion, and is characterized by: the order of the masonry state of the bottom slope is: Q1 slope bricks (8), Q2 slope bricks (9), Q3 slope bricks (10), Q1 with thin slice bricks on it Uphill brick (8), Q2 uphill brick (9) with sliced brick on it, Q3 uphill brick (10) with sliced brick on it, and circulate accordingly to form a starting uphill repeatedly repeated structure. 4. the slope structure of molten steel tank according to claim 3 is characterized in that: the tail end of said Q1 slope brick (8) is equal to the head end of Q2 slope brick (9), and the Q2 slope brick ( 9) tail end and the head end contour of Q3 slope brick (10), the tail end of Q3 slope brick (10) and the head end contour of Q1 slope brick (8) with sheet brick on it. 5. The slope structure of the molten steel tank according to claim 3, characterized in that: the head-to-tail junction of the slope is formed between the Q1 slope brick (8) and the Q3 slope brick (10) with thin slice bricks on it (4), on the Q1 slope brick (8) of the head and tail junction (4), there is a special staggered brick (6) at the position close to the Q3 slope brick (10) with thin slice brick ), the Q1 slope brick (8) head end adds the same height to the tail end of the Q3 slope brick (10) with the Q3 slope brick (10) of the band sheet brick. 6. The slope structure of the molten steel tank according to claim 3, characterized in that: the masonry state of the slope at the beginning uses the following structure: Q1 slope bricks (8) are combined with staggered joint bricks (6) and Q3 Slope bricks (10) are spliced in combination with thin slice bricks (5). 7. The slope structure of the molten steel tank according to claim 3, characterized in that: the masonry state of the slope at the beginning uses the following structure: the front of the Q1 slope brick (8) along the Q1 slope brick (8) The slope is filled with a slope. the

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