CN212316159U

CN212316159U - Checker brick with gas channel

Info

Publication number: CN212316159U
Application number: CN202022166828.8U
Authority: CN
Inventors: 冯燕波
Original assignee: Capital Engineering & Research Inc Ltd
Current assignee: Capital Engineering & Research Inc Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-01-08
Anticipated expiration: 2030-09-28

Abstract

The utility model provides a take gas channel's checker brick relates to heat accumulation formula hot-blast furnace technical field, and this checker brick has the brick body, has seted up a plurality of first check holes on the brick body, and each first check hole sets up and runs through two terminal surfaces that the brick body set up relatively along the axial of the brick body, sets up an at least water conservancy diversion recess that is used for the gas flow on at least terminal surface of the brick body. The utility model provides a take gas channel's checker brick has better voltage-sharing effect of flow equalizing, can further improve the whole through-hole rate and the heat transfer efficiency of heat accumulator.

Description

Checker brick with gas channel

Technical Field

The utility model relates to a heat accumulation formula hot-blast furnace technical field, concretely relates to checker brick that hot-blast furnace was used, in particular to take gas passage's checker brick.

Background

The checker brick is a high-efficiency heat storage carrier commonly adopted by hot blast stoves, and currently, porous checker bricks such as seven-hole checker bricks and nineteen-hole checker bricks are frequently used. With the increasing requirements of blast furnace production on the temperature of hot blast, the aperture of checker bricks is necessary to develop into small size so as to obtain larger heat storage area.

However, the traditional small-aperture checker brick, particularly the nineteen-aperture checker brick with small aperture, has the major defects:

1. due to masonry reasons, staggering is easily generated at the butt joint of each grid hole of two adjacent layers of checker bricks, so that the through porosity of the whole hot blast stove is low, and the resistance loss of a heat accumulator is large;

2. along with the prolonging of the service time, the phenomena of slag formation, peeling and hole blocking inevitably exist in the grid holes of part of the checker bricks, and because the flow equalizing channels which are arranged along the axial direction which is vertical to the grid holes of the checker bricks are not available, a plurality of grid holes which are mutually connected in series and communicated on the heat accumulator are not communicated, even the grid holes which are formed are invalid;

3. the traditional hole-hole butt-joint masonry mode cannot change the result of low utilization rate of checker bricks caused by uneven airflow distribution on the cross section of the heat accumulator.

In view of the above, the present inventors have designed a checker brick with gas passages through trial and error based on many years of experience in production and design in this and related fields, in order to solve the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take gas channel's checker brick has the better voltage-sharing effect of flow equalizing, can improve the whole through-hole rate and the heat transfer efficiency of heat accumulator.

In order to achieve the above object, the utility model provides a take gas channel's checker brick has the brick body, wherein, a plurality of first check holes, each have been seted up on the brick body first check hole is followed the axial setting of the brick body is run through two terminal surfaces of the relative setting of the brick body at least one of the brick body set up an at least water conservancy diversion recess that is used for the gas flow on the terminal surface.

The checker brick with gas passages as described above, wherein at least one of the end surfaces of the brick body is provided with a plurality of the diversion grooves, and at least one end of each diversion groove penetrates through the side wall of the brick body.

The checker brick with gas passages as described above, wherein a plurality of the guide grooves are provided to intersect with each other on the end surface of the brick body.

The checker brick with gas passages as described above, wherein a plurality of the guide grooves commonly intersect at the center of the end face of the brick body.

The checker brick with the gas channel is characterized in that the brick body is a cylindrical body with a regular hexagon-shaped end surface, and six flow guide grooves are formed in the end surface.

The checker brick with gas passages as described above, wherein one end of each of the guide recesses penetrates to a midpoint of a side length of the regular hexagon, and the other end of each of the guide recesses intersects at a center of the regular hexagon.

The checker brick with the gas channel as described above, wherein at least one flow guide groove is formed on each of the two end faces of the brick body.

The checker brick with gas passages as described above, wherein the width of the notch of the guide groove is greater than the width of the groove bottom of the guide groove.

The checker brick with gas passages as described above, wherein the first holes are circular holes, the width of the notches of the flow guide grooves is B, the inner diameter of the first holes is d, and the distance between every two adjacent first holes is L, so that d < B < L.

The checker brick with gas passages as described above, wherein a plurality of bosses or a plurality of counter bores for positioning are provided on an end face of the brick body.

Compared with the prior art, the utility model has the following characteristics and advantages:

the utility model provides a take checker brick of gas passage is used for buildding the heat accumulator, a plurality of checker bricks are stacked up along the axial direction range upon range of first check hole, all have an at least water conservancy diversion recess on at least one terminal surface because of each checker brick, when two liang of checker bricks are adjacent to be put in good order, formed the gaseous passageway that is used for the water conservancy diversion (also at least water conservancy diversion recess) between the two, make gas can flow in this passageway, thereby reach the purpose that the voltage-sharing was equalized, with whole through-hole rate and the heat transfer efficiency who improves the heat accumulator. Meanwhile, the end face of the checker brick is provided with at least one flow guide groove, so that the surface area of the checker brick is relatively increased, the heating area of the checker brick is relatively increased, and the improvement of the hot air temperature and the reduction of the use amount of refractory materials are facilitated.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for helping the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. The skilled person in the art can, under the teaching of the present invention, choose various possible shapes and proportional dimensions to implement the invention according to the specific situation.

Fig. 1 is a plan view of a checker brick with gas passages according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of an embodiment of the present invention in which upper and lower layers of checker bricks form a horizontal gas channel;

fig. 4 is a schematic view of an upper and a lower layers of checker bricks forming a horizontal gas passage according to another embodiment of the present invention.

Description of reference numerals:

100. checker bricks; 10. A brick body;

20. a first grid hole; 30. A flow guide groove;

40. a second grid hole; 50. A third grid hole;

60. a boss; 70. A counter bore;

d. an inner diameter; l, hole spacing.

Detailed Description

The details of the present invention can be more clearly understood with reference to the accompanying drawings and the description of the embodiments of the present invention. However, the specific embodiments of the present invention described herein are for the purpose of explanation only, and should not be construed as limiting the invention in any way. Given the teachings of the present invention, the skilled person can conceive of any possible variants based on the invention, which should all be considered as belonging to the scope of the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may be present.

The terms of orientation used herein, such as "upper," "lower," "top," and "bottom," are used in reference to FIG. 2, are used in a relative sense to one another or in reference to the normal use of the product, and should not be construed as limiting.

As shown in fig. 1, the lattice brick 100 with gas channel provided by the present invention has a brick body 10, a plurality of first lattice holes 20 are opened on the brick body 10, the plurality of first lattice holes 20 are disposed along the axial direction of the brick body 10 and run through two end faces of the brick body 10, and at least one flow guiding groove 30 for gas flowing is opened on at least one end face of the brick body 10.

The utility model provides a take gas channel's checker brick 100 is used for setting up the heat accumulator, a plurality of checker bricks 100 are put things in good order along the range upon range of axial direction of first check hole 20, all have an at least water conservancy diversion recess 30 on at least one terminal surface because of each checker brick 100, when two liang of checker bricks 100 are adjacent put things in good order, formed the gaseous passageway that is used for the water conservancy diversion (also an at least water conservancy diversion recess 30) between the two, make gas can flow between the checker brick 100 of adjacent putting things in good order setting, thereby reach the effect that the voltage-sharing is equalized, with whole through-hole rate and the heat transfer efficiency that improve the heat accumulator. Meanwhile, the at least one flow guide groove 30 is formed in the end face of the checker brick 100, so that the surface area of the checker brick 100 is relatively increased, the heating area of the checker brick 100 is relatively increased, and the improvement of the hot air temperature and the reduction of the usage amount of refractory materials are facilitated.

In one possible embodiment, as shown in fig. 3, the flow guide grooves 30 are provided on an end surface (e.g., an upper end surface or a top surface) of the checker brick 100 located below, and an end surface (e.g., a lower end surface or a bottom surface) of the checker brick 100 located above is a flat surface, and when the checker brick 100 located below and the checker brick 100 located above are stacked, a passage for guiding gas is formed therebetween.

In another possible embodiment, as shown in fig. 4, the end surface (e.g. the upper end surface or the top surface) of the checker brick 100 located below is a plane, and the flow guide groove 30 is provided on the end surface (e.g. the lower end surface or the bottom surface) of the checker brick 100 located above, and when the checker brick 100 located below and the checker brick 100 located above are stacked, a passage for guiding gas is formed therebetween.

The utility model discloses in, seted up many water conservancy diversion recesses 30 on at least one terminal surface of checker brick 100, the lateral wall to the brick body 10 is run through to the at least one end of each water conservancy diversion recess 30. By adopting the structural design, a plurality of channels for guiding air are formed between the upper checker brick 100 and the lower checker brick 100 which are stacked. The guide groove 30 may be formed at the lower end surface (or bottom surface) of the checker brick 100 located above; the guide grooves 30 may also be formed in the upper end surface (or top surface) of the checker brick 100 located below; or, the two end surfaces of the checker brick 100 are respectively provided with a flow guide groove 30.

According to the utility model discloses an embodiment sets up many water conservancy diversion recesses 30 of cross arrangement on the terminal surface of the brick body 10, and the lateral wall to the brick body 20 is run through to the at least one end of each water conservancy diversion recess 30. By adopting the structural design, a staggered latticed structure is formed between two layers of checker bricks 100 which are stacked and arranged on the heat accumulator for gas circulation, so that the overall through hole rate and the heat transfer efficiency of the heat accumulator are further improved.

In an alternative example of this embodiment, as shown in fig. 1, a plurality of guide grooves 30 intersect at the center of the end face of the brick body 10. The multiple diversion grooves 30 are intersected at the same point, so that the heat exchange efficiency of gas in the multiple diversion grooves 30 can be accelerated, and the heat transfer efficiency of the heat accumulator is further improved.

Specifically, the end surface of the brick body 10 is a regular polygon, one end of the flow guiding groove 30 penetrates through to the center of the side length of the regular polygon, and the other end of the flow guiding groove 30 is located at the center of the regular polygon. By adopting the structural design, the flow guide grooves 30 on two adjacent stacked checker bricks 100 can be effectively prevented from being staggered mutually to cause the interruption of an airflow channel, the mutual communication of the end surface centers of the brick bodies 10 can be ensured by the plurality of flow guide grooves 30, and the spliced gas flow guide structure is latticed, so that the overall through hole rate and the heat transfer efficiency of the heat accumulator are further improved.

Preferably, as shown in fig. 1, the end surface of the brick body 10 is a regular hexagon, six diversion grooves 30 are formed in the end surface of the brick body 10, one end of each diversion groove 30 penetrates through to the middle point of the side length of the regular hexagon, and the other end of each diversion groove 30 intersects at the center of the regular hexagon.

According to an embodiment of the present invention, the brick body 10 is a cylindrical body with a regular polygon end face, one end face is a top face, the other end face is a bottom face, the guiding groove 30 is provided on the top face, and the first grid hole 20 is a circular hole penetrating from top to bottom.

In an optional embodiment of this embodiment, the top surface and the bottom surface of the brick body 10 are both horizontal surfaces, the flow guiding groove 30 is opened along the horizontal direction, and the bottom surface of the flow guiding groove 30 is a horizontal surface, so that the gas channel formed by the flow guiding groove 30 and the bottom surface of the brick body 10 above the flow guiding groove is horizontal, which is beneficial to gas circulation.

In an alternative embodiment of the present invention, the width of the notch of the diversion groove 30 is greater than the width of the bottom of the diversion groove 30.

In an optional embodiment of the present invention, the depth of the flow guiding groove 30 is 2-20 mm.

The utility model discloses an in an optional embodiment, first check hole 20 is the round hole, and the internal diameter of first check hole 20 is d, and the width of the notch of water conservancy diversion recess is B, two liang adjacent the interval of first check hole is L, then has d < B < L, and the width of water conservancy diversion recess 30 is between the internal diameter d of first check hole 20 and the interval L of two adjacent first check holes 20 promptly, and the value scope of interval L is 1.2d ~ 2.5 d.

In an optional embodiment of the present invention, each side wall of the brick body 10 is further provided with two second grid holes 40 penetrating up and down, and each corner of the brick body 10 is provided with a third grid hole 50 penetrating up and down. The second grid hole 40 and the third grid hole 50 are both groove-shaped, and the side wall of the second grid hole 40 and the side wall of the third grid hole 50 are both arc-shaped. Specifically, the side wall of the second lattice hole 40 is a 180-degree arc surface, the side wall of the third lattice hole 50 is a 120-degree arc surface, and the diameters of the circles corresponding to the two arc surfaces are the same as the inner diameter of the first lattice hole 40. In the heat storage body formed by stacking a plurality of checker bricks 100, the side walls of two adjacent checker bricks 100 in each layer are mutually abutted, and two second grid holes 40 are butted to form a round hole; the corners of three adjacent checker bricks 100 abut against each other and the three third cells 50 abut against each other to form a circular hole.

Furthermore, the inner diameters of the three grid holes (the inner diameter of the first grid hole 20, the diameter of the circle corresponding to the second grid hole 40 and the diameter of the circle corresponding to the third grid hole 50) are the same and are all d; the hole intervals are the same and are L; the diameter of the grid holes at the bottom surface (or the top surface) of the brick body is d +1, the diameter of the grid holes at the top surface (or the bottom surface) is d-1,

in an alternative example, the inner diameter d of the first lattice hole 20 ranges from 25mm to 35 mm.

Preferably, the inner diameter grid d of the first grid hole is 25mm, 28mm, 30mm, 35mm and the like.

In an alternative example of the present invention, the checker brick 100 is a 19-hole brick, that is, the brick body 10 is uniformly provided with 19 first holes 20.

In other embodiments of the present invention, the checker brick 100 may be a 7-hole checker brick or a 37-hole checker brick, and the arrangement manner of the lattice holes may adopt the prior art, which is not repeated herein.

In an alternative embodiment of the present invention, at least one boss 60 or counterbore 70 is provided on at least one end of the brick body 10.

In an alternative embodiment of this embodiment, a plurality of bosses 60 are provided on an end surface of the brick body 10, and the plurality of bosses 60 are uniformly distributed on a concentric circle with the center of the end surface as the center.

In another alternative embodiment of this embodiment, a plurality of counter bores 70 are provided on one end face of the brick body 10, and the plurality of counter bores 70 are uniformly distributed on a concentric circle with the center of the end face as the center.

In yet another alternative embodiment of this embodiment, a plurality of bosses 60 are provided on one end surface (upper end surface or top surface) of the brick body 10, and a plurality of counterbores 70 are provided on the other end surface (lower end surface or bottom surface) of the brick body 10 in one-to-one correspondence with the bosses 60.

Preferably, the height of the boss 60 is the same as the depth of the counterbore 70.

Further, the depth of the counterbore 70 (and thus the height of the boss) is greater than the depth of the flow guide groove 30.

In an alternative embodiment, the inner diameter of the counterbore 70 is slightly larger than the outer diameter of the boss 60 to facilitate smooth insertion of the boss 60 into the counterbore 70 on the brick 10 below it.

Preferably, the outer diameter of the boss 60 ranges from 1.5d to 2 d.

In an alternative embodiment, the bottom surface of the brick body 10 is provided with three bosses 60, and the three bosses 60 are uniformly distributed on a concentric circle with the center of the bottom surface as the center.

Preferably, the concentric circles have a radius of 1.5L.

Furthermore, the three bosses are respectively arranged in the direction of the top angle of the regular hexagon.

The utility model provides a take horizontal gas passage's checker brick, its simple structure, the preparation is convenient, and the product shaping rate is high.

The utility model provides a take horizontal gas passage's checker brick is formed with vertically and horizontally staggered's horizontal gas passage between its upper and lower two-layer checker brick, and gaseous through setting up the horizontal gas passage at the checker brick upper surface, reaches the effect that the voltage-sharing was equalized flow to improve the whole through-hole rate and the heat transfer efficiency of heat accumulator, have the effect that improves hot-blast temperature.

The utility model provides a take horizontal gas passage's checker brick, the water conservancy diversion recess of seting up on its top surface has increased the heating area of checker brick, is favorable to hot air temperature's improvement and reduction refractory material's use amount.

In the following description of the embodiments, the invention is described in detail, but the description is not to be construed as limiting the invention for any reason, and in particular, the features described in the different embodiments may be combined with each other as desired, thereby forming other embodiments, and the features are understood to be applicable to any one embodiment and not limited to the described embodiments unless explicitly described to the contrary.

Claims

1. A checker brick with a gas channel is provided with a brick body and is characterized in that the brick body is provided with a plurality of first grid holes, each first grid hole is arranged along the axial direction of the brick body and penetrates through two opposite end faces of the brick body, and at least one flow guide groove for gas flowing is formed in at least one end face of the brick body.

2. A checker brick with gas passages as claimed in claim 1, wherein a plurality of said flow guide grooves are formed in at least one of said end faces of said brick body, and at least one end of each of said flow guide grooves penetrates through a side wall of said brick body.

3. Checker brick with gas passages as claimed in claim 2, wherein a plurality of said flow-guiding grooves are provided crosswise to each other on said end face of said brick body.

4. Checker brick with gas passages as claimed in claim 3, wherein a plurality of said flow-guiding grooves are commonly intersected at the center of said end face of said brick body.

5. A checker brick with gas passages as claimed in claim 4, wherein said brick is a cylindrical body having an end face in the shape of a regular hexagon, and six said flow guide grooves are formed on said end face.

6. The gas channel-equipped checker brick of claim 5, wherein one end of each of the guide grooves penetrates to a midpoint of a side length of the regular hexagon, and the other end of each of the guide grooves intersects at a center of the regular hexagon.

7. A checker brick with gas passages as recited in claim 1, wherein at least one of said flow guide grooves is formed on both of said end faces of said brick.

8. Checker brick with gas passages according to claim 1, wherein the width of the notches of said flow-guiding grooves is larger than the width of the groove bottoms of said flow-guiding grooves.

9. The checker brick with gas passages as claimed in claim 1 or 8, wherein said first cells are circular holes, the width of the notches of said flow guide grooves is B, the inner diameter of said first cells is d, and the distance between two adjacent first cells is L, such that d < B < L.

10. Checker brick with gas passages as claimed in claim 1, wherein bosses or counterbores for positioning are provided on the end face of the brick body.