CN218964019U - Novel anti-fracture impermeable steel air brick - Google Patents
Novel anti-fracture impermeable steel air brick Download PDFInfo
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- CN218964019U CN218964019U CN202320040704.6U CN202320040704U CN218964019U CN 218964019 U CN218964019 U CN 218964019U CN 202320040704 U CN202320040704 U CN 202320040704U CN 218964019 U CN218964019 U CN 218964019U
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Abstract
The utility model discloses a novel anti-fracture impermeable steel air brick, which comprises an air brick body, wherein an air channel is formed in the air brick body; the gas channel comprises an arc-shaped slit and a radiation slit, and two or more than two mutually independent arc-shaped slits enclose at least one discontinuous circumferential slit encircling the axis of the brick core body; the arc-shaped slits and the radiation slits extend along the length direction of the air brick body; at any cross section of the air brick body: the start point of the radiation slit faces to the center of the air brick body or near the center of the air brick body, the end point of the radiation slit faces to the edge of the air brick body, two or more than two radiation slits are distributed around the axis of the air brick body, and each radiation slit is in fluid conduction with at least one arc slit. The utility model can solve the problems of fracture caused by overlarge stress and difficult blowing through caused by steel seepage blocking in the use process of the conventional air brick.
Description
Technical Field
The utility model relates to the technical field of air bricks. In particular to a novel fracture-proof impermeable steel air brick.
Background
China is the country with the largest steel production in the world, and the annual steelmaking capacity is more than billions of tons. To improve the quality of steel, steel mills generally refine it. A mating refining refractory material, such as air brick, is often required in the refining of steel. The air brick can stir molten steel in the refining process, thereby promoting the floating of inclusions in the molten steel and homogenizing the composition and the temperature of the molten steel. In order to improve the service life of the air brick, the existing air brick is often made of high-grade materials (such as corundum), but the high-grade air brick materials often cause cracks and even breaks of the air brick due to over-high stress, so that the service life of the air brick is reduced, and the production efficiency of steel smelting is affected. In addition, the existing air brick has the phenomenon that steel seeps or even is blocked and cannot be blown through due to a single slit structure. In order to solve the problem of steel infiltration blocking, the method of back-blowing oxygen to clean the residual steel is generally adopted in industry for treatment, but the back-blowing oxygen to clean the residual steel not only can reduce the service life of the air brick, but also has bad operation conditions and higher operation strength of workers. Therefore, it is necessary to design an air brick capable of preventing breakage and steel blockage so as to avoid the occurrence of the problems.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to provide the novel anti-fracture impermeable steel air brick, so as to solve the fracture problem caused by overlarge stress and the problem of difficult blowing through caused by steel seepage blocking in the use process of the existing air brick.
In order to solve the technical problems, the utility model provides the following technical scheme:
the novel fracture-preventing impermeable steel air brick comprises an air brick body, wherein an air channel is formed in the air brick body; the gas channel comprises an arc-shaped slit and a radiation slit, and two or more than two mutually independent arc-shaped slits enclose at least one discontinuous circumferential slit encircling the axis of the brick core body; the arc-shaped slits and the radiation slits extend along the length direction of the air brick body; at any cross section of the air brick body: : the starting point of the radiation slit 7 faces the center of the air brick body or is near the center of the air brick body, the end point of the radiation slit 7 faces the edge of the air brick body 1, two or more than two radiation slits 7 are distributed around the axis of the air brick body, and each radiation slit 7 is in fluid communication with at least one arc slit.
The novel fracture-preventing impermeable steel air brick comprises 3-40 arc-shaped slits; the total arc length of the arc-shaped seam is 75-95% of the circumference of the intermittent circumferential seam.
Above-mentioned novel prevention of fracture prevention of seepage steel air brick on the arbitrary cross section of air brick body, same arbitrary adjacent two on the interrupted circumference seam the arc length of arc seam equals.
The novel fracture-preventing impermeable steel air brick is characterized in that the circle center of the circle where the intermittent circumferential seam is located is the circle center of the circle where the air brick body is located on any cross section of the air brick body, and the starting point of the radiation seam faces to the center of the air brick body.
Above-mentioned novel prevention of fracture prevention of seepage steel air brick on the arbitrary cross section of air brick body: the end point of the radiation seam is in fluid communication with the intermittent circumferential seam, and the start point of the radiation seam is converged at the center of the air brick body; or the end point of the radiation seam is in fluid conduction with the intermittent circumferential seam, and the extension line of the start point of the radiation seam is converged at the center of the air brick body;
and, on any cross section of the air brick body: the radiation slit between the start point of the radiation slit and the end point of the radiation slit is in fluid communication with one or more of the intermittent circumferential slits that are not on the same circumference.
Above-mentioned novel prevention of fracture prevention of seepage steel air brick on the arbitrary cross section of air brick body, from air brick body center extremely air brick body border: the two adjacent circles of radiation slits are arranged on different radiation lines taking the center of the air brick body as a starting point.
Above-mentioned novel prevention of fracture prevention of seepage steel air brick on the arbitrary cross section of air brick body: the radiation seam is composed of a near-end radiation seam adjacent to the center of the air brick body and a far-end radiation seam far away from the center of the air brick body, and the near-end radiation seam and the far-end radiation seam are arranged on different radiation lines taking the center of the air brick body as a starting point.
The novel fracture-preventing impermeable steel air brick is characterized in that the proximal radiation seam is in fluid communication with at least two discontinuous circumferential seams on different circumferences, and the distal radiation seam is in fluid communication with at least three discontinuous circumferential seams on different circumferences; alternatively, the proximal radiation slit is in fluid communication with at least three of the intermittent circumferential slits on different circumferences, and the distal radiation slit is in fluid communication with at least two of the intermittent circumferential slits on different circumferences.
Above-mentioned novel prevention of fracture prevention of seepage steel air brick on the arbitrary cross section of air brick body: the radiation slit consists of a near-end radiation slit adjacent to the center of the air brick body, a far-end radiation slit far away from the center of the air brick body and an intermediate radiation slit between the near-end radiation slit and the far-end radiation slit; the near-end radiation slit is respectively communicated with one of the intermittent circumferential slits through the starting point and the ending point of the near-end radiation slit, and the far-end radiation slit is also respectively communicated with one of the intermittent circumferential slits through the starting point and the ending point of the far-end radiation slit; the middle radiation slit is communicated with more than two intermittent circumferential slits, the intermittent circumferential slits communicated with the starting point of the middle radiation slit and the intermittent circumferential slits communicated with the ending point of the near-end radiation slit are the same intermittent circumferential slits, and the intermittent circumferential slits communicated with the ending point of the middle radiation slit and the starting point of the far-end radiation slit are the same intermittent circumferential slits.
The novel fracture-preventing impermeable steel air brick has the advantages that the included angle between the extension lines of two adjacent radiation slits in the circumferential direction of the intermittent circumferential slit is 5-35 degrees on any cross section of the air brick body; on the end face of the air outlet end of the air brick body: the distance between two adjacent intermittent circumferential seams is 1-30 mm; the width of the arc-shaped seam is 0.15-0.35 mm; the slit width of the radiation slit is 0.15-0.35 mm.
Above-mentioned novel prevention of fracture prevention of seepage steel air brick on the arbitrary cross section of air brick body: the distances between two adjacent intermittent circumferential seams are equal; or the distance between two adjacent intermittent circumferential seams is sequentially increased or decreased outwards from the circle center.
The novel fracture-resistant impermeable steel air brick also comprises a metal shell, a metal bottom plate and a metal tail pipe; the metal shell is arranged on the outer wall surface of the air brick body, the metal bottom plate is positioned at the air inlet end of the air brick body and is fixedly connected with the metal shell on the side wall surface of the air brick body, and the metal tail pipe is fixedly connected with the metal bottom plate; an air chamber is arranged between the metal bottom plate and the bottom wall of the air brick body, the fluid inlet end of the air chamber is in fluid communication with the fluid outlet end of the metal tail pipe through an air hole formed in the metal bottom plate, and the fluid outlet end of the air chamber is in fluid communication with the fluid inlet end of the air channel; the air brick body further comprises an air brick connector, and two ends of the air brick connector are respectively fixed on the inner wall of the arc-shaped seam; the total volume of the air brick connector accounts for 10-35% of the total volume of the arc.
The technical scheme of the utility model has the following beneficial technical effects:
1. the novel fracture-preventing and seepage-preventing steel air brick has the advantages that the air passage arranged in the novel fracture-preventing and seepage-preventing steel air brick has a larger air passage area, so that the air brick has larger air permeability, and the thickness of the air passage can be set thinner, so that the novel fracture-preventing and seepage-preventing steel air brick is not easy to infiltrate steel and high in blowing-through rate, the influence of the service life of the air brick cleaned by back blowing oxygen is avoided, and the service life of the air brick is effectively prolonged;
2. the novel anti-fracture impermeable steel air brick has the advantages that the air channel is formed by the arc-shaped slits and the radiation slits, the arc-shaped slits form intermittent circumferential slits along the circumference of the air brick body on any cross section of the air brick body, the radiation slits are arranged along the radial direction of the air brick body, partial stress of the air brick body can be effectively released at high temperature by the arrangement mode, the thermal shock resistance of the air brick is improved, the influence of cracks and even fracture of the air brick on steelmaking is avoided, and the service life of the air brick is prolonged.
3. The novel anti-fracture steel-seepage-proofing air brick comprises an air brick body, a plurality of arc-shaped slits and radiation slits, wherein the arc-shaped slits and radiation slits are formed in the circumferential direction of the air brick body, and when a certain air curtain structural unit is blocked due to local steel seepage, gas can flow from other air curtain structural units to the air outlet end of the air brick and enter molten steel to realize stirring, so that the blocking phenomenon caused by steel seepage in the intermittent circumferential slits is avoided.
4. The stirring flow field formed by the radiation slits in the molten steel and the arc-shaped slits in the molten steel can interact with each other to form three-dimensional omnibearing stirring, so that a stirring dead zone is effectively eliminated, and a stirring effect of 1+1 & gt2 is realized; compared with the conventional common air brick with a single slit structure, the novel anti-fracture impermeable steel air brick has better stirring effect, and has more obvious effects of purifying molten steel and homogenizing components and temperature in molten steel.
Drawings
FIG. 1 is a schematic view (front view) of the structure of embodiment 1 of the present utility model;
FIG. 2 is a schematic view (top view) of the structure of embodiment 1 of the present utility model;
FIG. 3 is a schematic view (top view) of the structure of embodiment 2 of the present utility model;
FIG. 4 is a schematic view (top view) of the structure of embodiment 3 of the present utility model;
FIG. 5 is a schematic view (top view) of the structure of embodiment 4 of the present utility model;
FIG. 6 is a schematic view (top view) of the structure of embodiment 5 of the present utility model;
FIG. 7 is a schematic view (top view) of the structure of embodiment 6 of the present utility model;
fig. 8 is a schematic structural view (top view) of embodiment 7 of the present utility model.
The reference numerals in the drawings are as follows: 1-an air brick body; 2-a metal housing; 3-air chamber; 4-metal tail pipe; 5-a metal base plate; 6-interrupting the circumferential seam; 61-a first circumferential seam; 62-a second circumferential seam; 63-a third circumferential seam; 64-fourth circumferential slits; 7-radiation slits; 71-a first radiation slit; 72-a second radiation slit; 73-a third radiation slit; 74-fourth radiation slit; 8-vent holes.
Detailed Description
Example 1
In the embodiment, the novel fracture-preventing impermeable steel air brick is a circular truncated cone-shaped air brick [ a small end section of the circular truncated cone is an air outlet end, a large end section of the circular truncated cone is an air inlet end ], a refractory material body is arranged inside the novel fracture-preventing impermeable steel air brick, and an air channel is arranged in the refractory material body; specifically, the structure of the novel fracture-resistant and seepage-resistant steel air brick in the embodiment is shown in fig. 1 and 2, and the novel fracture-resistant and seepage-resistant steel air brick comprises an air brick body 1, a metal shell 2, a metal bottom plate 5 and a metal tail pipe 4; the metal shell 2 is arranged on the outer wall surface of the air brick body 1, the metal bottom plate 5 is positioned at the air inlet end of the air brick body 1 and is fixedly connected with the metal shell 2 on the side wall surface of the air brick body 1, and the metal tail pipe 4 is fixedly connected with the metal bottom plate 5; an air chamber 3 is arranged between the metal bottom plate 5 and the bottom wall of the air brick body 1, the fluid inlet end of the air chamber 3 is in fluid communication with the fluid outlet end of the metal tail pipe 4 through an air hole 8 arranged on the metal bottom plate 5, and the fluid outlet end of the air chamber 3 is in fluid communication with the fluid inlet end of the air channel; in the embodiment, the metal shell 2 is an iron sheet, and the metal tail pipe 4 is a steel pipe; the metal bottom plate 5 and the iron sheet on the side face are welded into a sealed whole.
In this embodiment, the air brick body 1 has a gas channel therein; the gas channel comprises arc-shaped slits and radiation slits 7, and each 12 mutually independent arc-shaped slits with the same arc length enclose an intermittent circumferential slit 6 which surrounds the axis of the brick core body; the arc-shaped slits and the radiation slits 7 extend along the length direction of the air brick body 1; at any cross section of the air brick body 1: the starting point of the radiation slit 7 faces the center of the air brick body or near the center of the air brick body, the end point of the radiation slit 7 faces the edge of the air brick body 1, two or more than two radiation slits 7 are distributed around the axis of the air brick body, and in the embodiment, the radiation slits 7 are distributed radially and are 12 in total. The air brick body 1 further comprises an air brick connector, and two ends of the air brick connector are respectively fixed on the inner wall of the arc-shaped seam; the total volume of the air brick connector accounts for 20% of the total volume of the arc-shaped seam; the cross section of the air brick connector is isosceles trapezoid (in other embodiments, the cross section of the air brick connector can also be regular triangle, ellipse or circle).
As shown in fig. 2, the number of the intermittent circumferential slits 6 is 4, and each intermittent circumferential slit 6 comprises 12 arc slits; the total arc length of the arc-shaped slits is 80% of the circumference of the intermittent circumferential slits 6, and on any cross section of the air brick body 1, the arc lengths of any two adjacent arc-shaped slits on the same intermittent circumferential slits 6 are equal [ in other embodiments, may be unequal ].
A first circumferential slit 61, a second circumferential slit 62, a third circumferential slit 63 and a fourth circumferential slit 64 are sequentially arranged along the edge of the air brick body 1 towards the center of the circle; at any cross section of the air brick body 1: the circle center of the circle where the intermittent circumferential seam 6 is located is the circle center of the circle where the air brick body 1 is located, and the starting point of the radiation seam 7 faces to the center of the air brick body.
At any cross section of the air brick body 1: the end point of the radiation slit 7 is in fluid communication with the intermittent circumferential slit 6, and the starting point of the radiation slit 7 is converged at the center of the air brick body; and, the radiation slit 7 between the start point of the radiation slit 7 and the end point of the radiation slit 7 is in fluid communication with the 4 intermittent circumferential slits 6 on the same circumference.
In this embodiment, the radiation slits 7 include a first radiation slit 71, a second radiation slit 72, a third radiation slit 73, and a fourth radiation slit 74; at any cross section of the air brick body 1: one end of the first radiation slit 71 is in fluid communication with the first circumferential slit 61, and the other end is in fluid communication with the second circumferential slit 62; one end of the second radiation slit 72 is in fluid communication with the second circumferential slit 62, and the other end is in fluid communication with the third circumferential slit 63; one end of the third radiation slit 73 is in fluid communication with the third circumferential slit 63, and the other end is in fluid communication with the fourth circumferential slit 64; one end of the fourth radiation slit 74 is in fluid communication with the fourth circumferential slit 64, the other end thereof is converged at the center of the fourth circumferential slit 64, and any two of the fourth radiation slits 74 are in fluid communication at the center; the first radiation slit 71, the second radiation slit 72, the third radiation slit 73 and the fourth radiation slit 74 are radially arranged on the same straight line.
In this embodiment, the distances between two adjacent intermittent circumferential slits 6 are equal, and on the air outlet end face of the air brick body 1 adjacent to the metal bottom plate 5, the distances between two adjacent intermittent circumferential slits 6 are 15mm [ in other embodiments, the distances between two adjacent intermittent circumferential slits 6 may also be unequal, for example, the distances between two adjacent intermittent circumferential slits 6 increase or decrease sequentially from the center of the circle outwards ]; the slit widths of the arc-shaped slit and the radiation slit 7 are 0.18mm; on any cross section of the air brick body 1, an included angle of extension lines of two adjacent radiation slits 7 along the circumferential direction of the intermittent circumferential slit 6 is 30 degrees.
When the novel fracture-preventing impermeable steel air brick of the embodiment blows, high-pressure gas in an external pipeline passes through the metal bottom plate 5 and enters the air chamber 3 through the metal tail pipe 4, the gas further enters the air channels of the arc-shaped slits and the radiation slits 7 after filling the air chamber 3, reaches the small heads of the air brick and enters molten steel for stirring. The gas channel formed by the arc-shaped slits and the radiation slits 7 at high temperature can effectively release the stress in the air brick refractory body, thereby avoiding the occurrence of cracks and breaking; because the arc-shaped slits and the radiation slits 7 in the gas channel jointly form 12 gas curtain structural units in the radial direction of the air brick body, when the air brick is locally blocked, gas is permeated out through other unblocked gas curtain structural units, thereby effectively realizing the purpose of preventing leakage and blocking; when more steel is permeated into one arc-shaped seam, gas can enter the adjacent arc-shaped seam which is in fluid conduction with the arc-shaped seam through the radiation seam and finally enter molten steel to realize stirring, so that the aim of steel seepage prevention is fulfilled. The air brick of the embodiment has the blowing-through rate of 100 percent.
Compared with the conventional common air brick with a single slit structure, the novel anti-fracture impermeable steel air brick has better stirring effect, more remarkable effect of purifying molten steel and homogenizing components and temperature in molten steel, and prolonged service life by 15%.
Example 2
This embodiment differs from embodiment 1 only in that: the end point of the radiation slit 7 is in fluid communication with the intermittent circumferential slit 6, and the extension line of the start point of the radiation slit 7 is converged at the center of the air brick body. In the present embodiment, the radiation slits 7 include a first radiation slit 71, a second radiation slit 72, and a third radiation slit 73; at any cross section of the air brick body 1: one end of the first radiation slit 71 is in fluid communication with the first circumferential slit 61, and the other end is in fluid communication with the second circumferential slit 62; one end of the second radiation slit 72 is in fluid communication with the second circumferential slit 62, and the other end is in fluid communication with the third circumferential slit 63; one end of the third radiation slit 73 is in fluid communication with the third circumferential slit 63, and the other end is in fluid communication with the fourth circumferential slit 64 [ see fig. 3 ].
The blowing-through rate of the novel anti-fracture impermeable steel air brick in the embodiment reaches 100%, the stirring effect is better than that of the conventional air brick with a single slit structure, the purifying effect on molten steel and the homogenizing effect on components and temperature in molten steel are more obvious, and the service life is prolonged by 16%.
Example 3
This embodiment differs from embodiment 1 only in that: on any cross section of the air brick body 1, from the center of the air brick body to the edge of the air brick body 1: two adjacent circles of radiation slits 7 are arranged on different radiation lines taking the center of the air brick body as a starting point; the radiation slit 7 is composed of a near-end radiation slit [ near-end radiation slit is a third radiation slit 73 ] adjacent to the center of the air brick body and a far-end radiation slit [ far-end radiation slit is composed of a first radiation slit 71 and a second radiation slit 72 ] far away from the center of the air brick body, and the near-end radiation slit and the far-end radiation slit are on different radiation lines taking the center of the air brick body as a starting point. The proximal radiation slit is in fluid communication with two of the intermittent circumferential slits 6 on different circumferences [ i.e. the start and end points of the third radiation slit 73 are in fluid communication with the fourth circumferential slit 64 and the third circumferential slit 63, respectively ], the distal radiation slit is in fluid communication with three of the intermittent circumferential slits 6 on different circumferences [ i.e. the start and end points of the distal radiation slit are in fluid communication with the third circumferential slit 63 and the first circumferential slit 61, respectively, and the middle of the distal radiation slit is in fluid communication with the second circumferential slit 62 ].
In the present embodiment, the first radiation slit 71 and the second radiation slit 72 of the first radiation slit 71, the second radiation slit 72, and the third radiation slit 73 are radially disposed on the same straight line, and the third radiation slit 73 is radially disposed on another outer straight line [ see fig. 4 ].
The blowing-through rate of the novel anti-fracture impermeable steel air brick in the embodiment reaches 100%, the stirring effect is better than that of the conventional air brick with a single slit structure, the purifying effect on molten steel and the homogenizing effect on components and temperature in molten steel are more obvious, and the service life is prolonged by 15%.
Example 4
This embodiment differs from embodiment 3 only in that: the proximal radiation slit consists of a third radiation slit 73 and a second radiation slit 72, and the distal radiation slit is a first radiation slit 71; the proximal radiation slit is in fluid communication with the three discontinuous circumferential slits 6 on different circumferences [ i.e. the start point and the end point of the proximal radiation slit are in fluid communication with the fourth circumferential slit 64 and the second circumferential slit 62 respectively, the middle of the proximal radiation slit is in fluid communication with the third circumferential slit 63 ], the distal radiation slit is in fluid communication with the two discontinuous circumferential slits 6 on different circumferences [ i.e. the start point and the end point of the distal radiation slit are in fluid communication with the second circumferential slit 62 and the first circumferential slit 61 respectively ].
In the present embodiment, the second radiation slit 72 and the third radiation slit 73 of the first radiation slit 71, the second radiation slit 72 and the third radiation slit 73 are radially disposed on the same straight line, and the first radiation slit 71 is radially disposed on another outer straight line [ see fig. 5 ].
The blowing-through rate of the novel anti-fracture impermeable steel air brick in the embodiment reaches 100%, the stirring effect is better than that of the conventional air brick with a single slit structure, the purifying effect on molten steel and the homogenizing effect on components and temperature in molten steel are more obvious, and the service life is prolonged by 15%.
Example 5
This embodiment differs from embodiment 3 only in that: at any cross section of the air brick body 1: the radiation slit 7 is composed of a proximal radiation slit [ i.e., a third radiation slit 73 ] adjacent to the center of the air brick body, a distal radiation slit [ i.e., a first radiation slit 71 ] distant from the center of the air brick body, and an intermediate radiation slit [ i.e., a second radiation slit 72 ] between the proximal radiation slit and the distal radiation slit; the near-end radiation slit is respectively communicated with one of the intermittent circumferential slits 6 through the starting point and the ending point of the near-end radiation slit, and the far-end radiation slit is also respectively communicated with one of the intermittent circumferential slits 6 through the starting point and the ending point of the far-end radiation slit; the middle radiation slit is communicated with more than two intermittent circumferential slits 6, the intermittent circumferential slits 6 communicated with the starting point of the middle radiation slit and the intermittent circumferential slits 6 communicated with the ending point of the near-end radiation slit are the same intermittent circumferential slits, and the intermittent circumferential slits 6 communicated with the ending point of the middle radiation slit and the intermittent circumferential slits 6 communicated with the starting point of the far-end radiation slit are the same intermittent circumferential slits.
In the present embodiment, the first radiation slit 71 and the third radiation slit 73 of the first radiation slit 71, the second radiation slit 72, and the third radiation slit 73 are radially disposed on the same straight line, and the second radiation slit 72 is radially disposed on another outer straight line [ see fig. 6 ].
The blowing-through rate of the novel anti-fracture impermeable steel air brick in the embodiment reaches 100%, the stirring effect is better than that of the conventional air brick with a single slit structure, the purifying effect on molten steel and the homogenizing effect on components and temperature in molten steel are more obvious, and the service life is prolonged by 15%.
Example 6
This embodiment differs from embodiment 5 only in that: the first radiation slit 71, the second radiation slit 72, and the third radiation slit 73 are radially disposed on a first straight line, the second radiation slit 72 is radially disposed on a second straight line, and the third radiation slit 73 is radially disposed on a third straight line [ see fig. 7 ].
The blowing-through rate of the novel anti-fracture impermeable steel air brick in the embodiment reaches 100%, the stirring effect is better than that of the conventional air brick with a single slit structure, the purifying effect on molten steel and the homogenizing effect on components and temperature in molten steel are more obvious, and the service life is prolonged by 16%.
Example 7
This embodiment differs from embodiment 1 only in that: one end of the fourth radiation slit 74 is in fluid communication with the fourth circumferential slit 64, and the extension lines of the other end of the fourth radiation slit 74 converge at the center of the fourth circumferential slit 64, i.e. the other ends of the fourth radiation slit 74 are not converged together but are independent from each other [ see fig. 8 ]. In this embodiment, the radial length of each fourth radial slit 74 along the fourth circumferential slit 64 is the same, and the radial length of the fourth radial slit 74 along the fourth circumferential slit 64 is smaller than the radius of the fourth circumferential slit 64.
The blowing-through rate of the novel anti-fracture impermeable steel air brick in the embodiment reaches 100%, the stirring effect is better than that of the conventional air brick with a single slit structure, the purifying effect on molten steel and the homogenizing effect on components and temperature in molten steel are more obvious, and the service life is prolonged by 17%.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While the obvious variations or modifications which are extended therefrom remain within the scope of the claims of this patent application.
Claims (12)
1. The novel fracture-preventing impermeable steel air brick comprises an air brick body (1) and is characterized in that an air channel is formed in the air brick body (1); the gas channel comprises an arc-shaped slit and a radiation slit (7), and two or more than two mutually independent arc-shaped slits enclose at least one discontinuous circumferential slit (6) surrounding the axis of the brick core body; the arc-shaped slits and the radiation slits (7) extend along the length direction of the air brick body (1); on any cross section of the air brick body (1): the starting point of the radiation slits (7) faces to the center of the air brick body or near the center of the air brick body, the ending point of the radiation slits (7) faces to the edge of the air brick body (1), two or more than two radiation slits (7) are distributed around the axis of the air brick body, and each radiation slit (7) is in fluid conduction with at least one arc slit.
2. The novel shatter-resistant impermeable steel air brick according to claim 1, characterized in that one of said intermittent circumferential slits (6) comprises 3-40 of said arcuate slits; the total arc length of the arc-shaped seam is 75-95% of the circumference of the intermittent circumferential seam (6).
3. The novel fracture-resistant and seepage-proof steel air brick according to claim 1, wherein the arc lengths of any two adjacent arc-shaped slits on the same intermittent circumferential slit (6) are equal on any cross section of the air brick body (1).
4. The novel fracture-resistant impermeable steel air brick according to claim 1, characterized in that, on any cross section of the air brick body (1): the circle center of the circle where the intermittent circumferential seam (6) is located is the circle center of the circle where the air brick body (1) is located, and the starting point of the radiation seam (7) faces to the center of the air brick body.
5. The novel fracture-resistant impermeable steel air brick according to claim 1, characterized in that, on any cross section of the air brick body (1): the end point of the radiation slit (7) is in fluid communication with the discontinuous circumferential slit (6), and the starting point of the radiation slit (7) is converged at the center of the air brick body; or the end point of the radiation slit (7) is in fluid conduction with the discontinuous circumferential slit (6), and the extension line of the start point of the radiation slit (7) is converged at the center of the air brick body;
and, on any cross section of the air brick body (1): -said radiation slit (7) between the start of said radiation slit (7) and the end of said radiation slit (7) is in fluid communication with one or more of said intermittent circumferential slits (6) which are not on the same circumference.
6. The novel fracture-resistant impermeable steel air brick according to claim 1, characterized in that, on any cross section of the air brick body (1), from the center of the air brick body to the edge of the air brick body (1): two adjacent circles of radiation slits (7) are arranged on different radiation lines taking the center of the air brick body as a starting point.
7. The novel fracture-resistant impermeable steel air brick according to claim 6, characterized in that, on any cross section of said air brick body (1): the radiation slit (7) is composed of a near-end radiation slit adjacent to the center of the air brick body and a far-end radiation slit far away from the center of the air brick body, and the near-end radiation slit and the far-end radiation slit are arranged on different radiation lines taking the center of the air brick body as a starting point.
8. The novel shatter-resistant impermeable steel air brick of claim 7 wherein said proximal radiation slit is in fluid communication with at least two of said intermittent circumferential slits (6) on different circumferences and said distal radiation slit is in fluid communication with at least three of said intermittent circumferential slits (6) on different circumferences; alternatively, the proximal radiation slit is in fluid communication with at least three of the intermittent circumferential slits (6) on different circumferences, and the distal radiation slit is in fluid communication with at least two of the intermittent circumferential slits (6) on different circumferences.
9. The novel fracture-resistant impermeable steel air brick according to claim 6, characterized in that, on any cross section of said air brick body (1): the radiation slit (7) is composed of a near-end radiation slit adjacent to the center of the air brick body, a far-end radiation slit far away from the center of the air brick body and an intermediate radiation slit between the near-end radiation slit and the far-end radiation slit; the near-end radiation slit is respectively communicated with one intermittent circumferential slit (6) through the starting point and the ending point of the near-end radiation slit, and the far-end radiation slit is also respectively communicated with one intermittent circumferential slit (6) through the starting point and the ending point of the far-end radiation slit; the middle radiation slit is communicated with more than two intermittent circumferential slits (6), the intermittent circumferential slits (6) communicated with the starting point of the middle radiation slit and the intermittent circumferential slits (6) communicated with the ending point of the near-end radiation slit are the same intermittent circumferential slits, and the intermittent circumferential slits (6) communicated with the ending point of the middle radiation slit and the intermittent circumferential slits (6) communicated with the starting point of the far-end radiation slit are the same intermittent circumferential slits.
10. The novel fracture-resistant impermeable steel air brick according to claim 1, characterized in that, on any cross section of the air brick body (1): an included angle of the extension lines of two adjacent radiation slits (7) along the circumferential direction of the intermittent circumferential slit (6) is 5-35 degrees; on the end face of the air outlet end of the air brick body (1): the distance between two adjacent intermittent circumferential seams (6) is 1-30 mm; the width of the arc-shaped seam is 0.15-0.35 mm; the slit width of the radiation slit (7) is 0.15-0.35 mm.
11. The novel fracture-resistant impermeable steel air brick according to claim 1, characterized in that, on any cross section of the air brick body (1): the distances between two adjacent intermittent circumferential seams (6) are equal; or the distance between two adjacent intermittent circumferential seams (6) is sequentially increased or decreased from the center of the circle outwards.
12. The novel fracture-resistant and seepage-resistant steel air brick according to claim 1, further comprising a metal shell (2), a metal bottom plate (5) and a metal tail pipe (4); the metal shell (2) is arranged on the outer wall surface of the air brick body (1), the metal bottom plate (5) is positioned at the air inlet end of the air brick body (1) and is fixedly connected with the metal shell (2) on the side wall surface of the air brick body (1), and the metal tail pipe (4) is fixedly connected with the metal bottom plate (5); an air chamber (3) is arranged between the metal bottom plate (5) and the bottom wall of the air brick body (1), the fluid inlet end of the air chamber (3) is in fluid communication with the fluid outlet end of the metal tail pipe (4) through an air vent (8) arranged on the metal bottom plate (5), and the fluid outlet end of the air chamber (3) is in fluid communication with the fluid inlet end of the air channel; the air brick body (1) further comprises an air brick connector, and two ends of the air brick connector are respectively fixed on the inner wall of the arc-shaped seam; the total volume of the air brick connector accounts for 10-35% of the total volume of the arc-shaped seam.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320040704.6U CN218964019U (en) | 2023-01-08 | 2023-01-08 | Novel anti-fracture impermeable steel air brick |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320040704.6U CN218964019U (en) | 2023-01-08 | 2023-01-08 | Novel anti-fracture impermeable steel air brick |
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| Publication Number | Publication Date |
|---|---|
| CN218964019U true CN218964019U (en) | 2023-05-05 |
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| CN202320040704.6U Active CN218964019U (en) | 2023-01-08 | 2023-01-08 | Novel anti-fracture impermeable steel air brick |
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| Country | Link |
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| CN (1) | CN218964019U (en) |
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