Lattice brick and heat accumulator with airflow intercommunication in horizontal direction

Abstract

The utility model provides a checker brick and a heat accumulator with airflow intercommunication in the horizontal direction, and relates to the technical field of heat accumulators, the checker brick with airflow intercommunication in the horizontal direction is provided with a brick body, the brick body is provided with a plurality of vent holes, and the brick body is provided with a first end face and a second end face which are oppositely arranged. The two ends of each vent hole penetrate through the first end face and the second end face respectively, a first flow guide groove and at least one positioning groove are formed in the first end face, the positioning groove is communicated with the at least one vent hole, the first flow guide groove is communicated with the positioning groove, and each vent hole is communicated with the first flow guide groove or the positioning groove. The second end face is provided with a positioning boss matched with the positioning groove in an aligned mode, and the outer diameter of the positioning boss is smaller than that of the positioning groove. According to the checker brick and the heat accumulator with the airflow communicated in the horizontal direction, the heat conduction efficiency of the checker brick and the heat accumulator can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat storage bodies, in particular to a lattice brick with interconnected airflows in horizontal directions and a heat storage body. Background Art

[0002] Checker bricks are key equipment for heat exchange in regenerative hot blast furnaces. Most of them are made of porous checker bricks stacked layer by layer to form multiple unconnected vertical gas channels inside, so that flue gas or cold air can flow through the regenerative body for heat exchange.

[0003] In actual use, due to manufacturing or masonry tolerances, the adjacent grid holes of the upper and lower checker bricks are prone to misalignment, resulting in a through-hole rate of only about 60% for conventional thermal storage bodies, which seriously restricts the total height of the thermal storage body. In addition, due to the uneven distribution of flue gas or cold air at the inlet end face of the thermal storage body, after entering the thermal storage body, there is a problem of excessive or insufficient flow in some thermal storage bodies, which also restricts the heat exchange efficiency of the thermal storage body.

[0004] An existing checker brick achieves a horizontal pressure equalization effect on the heat storage body of the hot blast furnace by setting a plurality of guide grooves for gas flow on at least one end face of the checker brick, which can further improve the overall through-porosity and heat transfer efficiency of the heat storage body. The horizontal interconnectivity of the through holes on the upper end face of this checker brick reaches 84%, but there are still a small number of through holes that are not connected to other horizontally adjacent grid holes.

[0005] Another type of existing checker brick is to connect the seven small holes between the circular grooves by setting a Y-shaped groove on the upper end face of the checker brick, and evenly distribute three interconnected triangular grooves between the three bosses on the lower end face, each triangular groove is connected to the four large holes on the periphery, and the inner end is connected to the large hole in the center of the brick. This checker brick connects multiple through holes through the Y-shaped groove, which improves the interconnection of the through holes. However, since the circular groove and the Y-shaped groove divide the upper end face into four areas, and each area is independent of each other and cannot be interconnected, the horizontal interconnection rate of the through holes is at most 37%. The through holes on the lower end face are divided into six areas by the circular groove and the triangular groove, and the adjacent areas are connected by only one through hole, and the flow rate between the through holes in the adjacent areas is only 6.25%.

[0006] In view of this, the inventor, based on many years of experience in production design in this field and related fields, has designed a lattice brick and heat storage body with horizontal airflow interconnection after repeated experiments, in order to solve the problems existing in the prior art. Utility Model Content

[0007] The utility model aims to provide a checkered brick and a heat storage body with interconnected airflows in a horizontal direction, which can effectively improve the heat conduction efficiency of the checkered brick and the heat storage body.

[0008] To achieve the above-mentioned purpose, the utility model proposes a checker brick with horizontal airflow interconnection, comprising a brick body, wherein a plurality of vents are provided on the brick body, wherein the brick body has a first end face and a second end face arranged opposite to each other, each of the vents passes through the first end face and the second end face, a first guide groove and at least one positioning groove are provided on the first end face, the positioning groove is connected to at least one of the vents, the first guide groove is connected to the positioning groove, each of the vents is connected to the first guide groove or the positioning groove, a positioning boss is provided on the second end face for aligning with the positioning groove, and the outer diameter of the positioning boss is smaller than the outer diameter of the positioning groove.

[0009] In the checker brick with interconnected airflow in the horizontal direction as described above, the first flow guide groove is directly connected to at least one of the vent holes in the positioning groove.

[0010] In the checker brick with interconnected airflow in the horizontal direction as described above, the depth of the positioning groove is greater than the depth of the first guide groove.

[0011] As for the checker brick with interconnected airflow in the horizontal direction as described above, wherein the second end surface is provided with a second flow guiding groove, and the second flow guiding groove is aligned with the first flow guiding groove.

[0012] In the checker brick with interconnected airflow in the horizontal direction as described above, each of the air holes is a tapered air hole with a diameter gradually expanding from the first end surface to the second end surface.

[0013] In the checker brick with interconnected airflow in the horizontal direction as described above, the positioning groove is circular, elliptical or polygonal, and the positioning groove is connected to at least three of the vent holes.

[0014] The checker brick with interconnected airflow in the horizontal direction as described above, wherein the brick body is a regular hexagonal prism, the first end face and the second end face are respectively the top face and the bottom face of the regular hexagonal prism, and each of the air holes is opened perpendicular to the first end face.

[0015] As described above, the checker brick with interconnected airflow in the horizontal direction, wherein the brick body is evenly distributed with nineteen ventilation holes, the first end surface is evenly distributed with three positioning grooves, and each positioning groove is connected to four ventilation holes.

[0016] In the checker brick with interconnected airflow in the horizontal direction as described above, the first flow guide groove is polygonal, and the first flow guide groove is directly connected to at least three of the vents in each of the positioning grooves.

[0017] As described above, in the checker brick with interconnected airflow in the horizontal direction, two first notches penetrating vertically are formed on each side wall of the brick body, and second notches penetrating vertically are formed at each corner of the brick body.

[0018] The utility model also proposes a heat storage body with horizontal airflow interconnected, wherein the heat storage body is formed by stacking a plurality of checkerboard bricks as described above, when each layer of checkerboard bricks is stacked, the first notches on the side walls of two contacting checkerboard bricks are butted to form a first through hole, the corners of three checkerboard bricks are butted to form a second through hole, the center of the checkerboard brick of the upper layer is located at the intersection of the corners of the three checkerboard bricks of the lower layer, and the three positioning bosses of the upper checkerboard bricks are respectively placed in the positioning grooves of the three checkerboard bricks of the lower layer.

[0019] Compared with the prior art, the utility model has the following characteristics and advantages:

[0020] The checker brick and heat storage body proposed in the utility model utilize the positioning groove on the first end face of the brick body, the first guide groove and the second guide groove on the second end face of the upper brick body to achieve the effect of horizontal interconnection, thereby improving the overall through-hole rate and heat transfer efficiency of the checker brick heat storage body, and having the effect of increasing the hot air temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0022] Figure 1 A top view of the checker brick proposed in the utility model;

[0023] Figure 2 for Figure 1 Middle AA section view;

[0024] Figure 3 for Figure 1 Middle BB section view;

[0025] Figure 4 This is a schematic diagram of the heat storage body proposed by the utility model.

[0026] Description of reference numerals:

[0027] 100, checker brick; 10, brick body;

[0028] 11. first end surface; 12. second end surface;

[0029] 20. vent hole; 30. first flow guide groove;

[0030] 40. Positioning groove; 50. Positioning boss;

[0031] 60. second flow guide groove; 70. first through hole;

[0032] 80. Second through hole; 200. Heat storage body. DETAILED DESCRIPTION

[0033] The details of the present invention can be more clearly understood by combining the accompanying drawings with the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used for the purpose of explaining the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be considered to belong to the scope of the present invention.

[0034] like Figures 1 to 4 As shown, the utility model proposes a checker brick 100 with horizontal airflow interconnection, comprising a brick body 10, on which a plurality of vents 20 are provided, the brick body 10 having a first end face 11 and a second end face 12 arranged opposite to each other, each vent 20 passing through the first end face 11 and the second end face 12, the first end face 11 being provided with a first guide groove 30 and at least one positioning groove 40, the positioning groove 40 being connected to at least three vents 20, and the first guide groove 30 being connected to the positioning groove 40, each vent 20 being connected to the first guide groove 30 or the positioning groove 40, the second end face 12 being provided with a positioning boss 50 which is aligned with the positioning groove 40, and the outer diameter of the positioning boss 50 being smaller than the outer diameter of the positioning groove 40.

[0035] The utility model proposes a checker brick 100 with interconnected airflow in the horizontal direction, and a first guide groove 30 and a positioning groove 40 are provided on the first end face 11, the first guide groove 30 is connected with the positioning groove 40, and each vent 20 is connected with the first guide groove 30 or the positioning groove 40. With the above structure, all the vents 20 are connected together through the first guide groove 30 and the positioning groove 40, and the horizontal interconnection rate of the vents 20 in the brick body 10 reaches 100%, which greatly improves the heat transfer efficiency of the checker brick and effectively improves the hot air temperature.

[0036] The utility model proposes a checker brick 100 with horizontal airflow interconnection, and the positioning groove 40 has the functions of positioning and connecting the vent hole 20. The outer diameter of the positioning boss 50 is smaller than the outer diameter of the positioning groove 40. When the checker bricks 100 are stacked, the positioning boss 50 of the upper checker brick 100 can be smoothly placed in the positioning groove 40 of the lower checker brick 100, and after the positioning boss 50 is placed in the positioning groove 40, there is still a gap for hot air to circulate, thereby effectively maintaining the horizontal interconnection rate.

[0037] The checker brick 100 with horizontal airflow interconnection proposed by the utility model effectively utilizes the space of the first end face 11. The first end face 11 has both horizontal interconnection and positioning functions, has a compact layout, a simple structure, is easy to manufacture, and has a high product yield.

[0038] In an optional embodiment of the present invention, the first guide groove 30 is directly connected to at least one vent hole 20 in the positioning groove 40. With the above structure, the first guide groove 30 is directly connected to the vent hole in the positioning groove 40, which improves the hot air communication effect between the first guide groove 30 and the vent hole 20 in the positioning groove 40.

[0039] In an optional embodiment of the present invention, the depth of the positioning groove 40 is greater than the depth of the first guide groove 30, so as to facilitate the mutual fixation of the checker bricks 100 stacked up and down.

[0040] In an optional embodiment of the utility model, a second guide groove 60 is provided on the second end face 12, and the second guide groove 60 is aligned with the first guide groove 30. When the checker bricks 100 are stacked, the second guide groove 60 of the upper checker brick 100 cooperates with the first guide groove 30 of the lower checker brick 100, so that the second guide groove 60 and the first guide groove 30 are interconnected, which not only improves the horizontal intercommunication effect of the checker bricks 100, but also effectively improves the vertical intercommunication effect of the checker bricks 100. In particular, when the upper and lower layers of checker bricks 100 are staggered, the airflow flowing through the vents 20 of the lower checker brick 100 can pass through the first guide groove 30 and the second guide groove 60 to communicate horizontally, and then enter the vents 20 of the upper checker brick 100, which effectively ensures the ventilation rate of the checker brick 100.

[0041] In an optional embodiment of the present invention, each vent hole 20 is a tapered vent hole that gradually expands in diameter from the first end face 11 to the second end face 12. This structure can speed up the air supply speed, and at the same time, after multiple checker bricks 100 are stacked in sequence in the vertical direction, they alternately change in the large and small channels with the help of the flow field, which can achieve the purpose of enhancing heat transfer.

[0042] In an optional example of this embodiment, the difference between the inner diameter of the vent hole 20 at the first end surface 11 and the inner diameter of the vent hole 20 at the second end surface 12 is 2 to 5 mm.

[0043] In an optional embodiment of the present invention, the positioning groove 40 is circular, and the positioning groove 40 is connected to at least three vent holes 20 .

[0044] Preferably, each vent hole 20 in the positioning groove 40 is respectively arranged near the outer edge of the positioning groove 40. After the positioning boss 50 is placed in the positioning groove 40, a gap is formed between the groove wall of the positioning groove 40 and the outer wall of the positioning boss 50, and the gap surrounding the positioning boss 50 can be connected with each vent hole 20, thereby ensuring the communication effect between the positioning groove 40 and the vent hole 20.

[0045] In an optional example of this embodiment, the brick body 10 is a regular hexagonal prism, the first end face 11 and the second end face 12 are the top face and the bottom face of the regular hexagonal prism respectively, and each vent hole 20 is opened perpendicular to the first end face 11 (each vent hole 20 is also perpendicular to the second end face 12).

[0046] In an optional example of this embodiment, nineteen ventilation holes 20 are evenly distributed on the brick body 10 , and three positioning grooves 40 are evenly distributed on the first end surface 11 , and each positioning groove 40 is respectively connected to four ventilation holes 20 .

[0047] In an optional example, the first flow guiding groove 30 is polygonal, and the first flow guiding groove 30 is directly connected to at least three vent holes 20 in each positioning groove 40 .

[0048] Preferably, the first flow guide groove 30 is a dodecagon, and the first flow guide groove 30 and the three positioning grooves 40 connect the twelve vents 20, and are connected to the four vents 20 at the center of the brick body 10. With the above structure, the horizontal interconnection rate of the checker brick 100 reaches 100%, and the minimum flow rate of the vents is 33%, which further improves the overall permeability and heat transfer efficiency of the checker brick 100.

[0049] In an optional example, two first notches extending vertically are formed on each side wall of the brick body 10, and second notches extending vertically are formed on each corner of the brick body 10. After a plurality of checker bricks 100 are stacked to form a heat storage body, the first notches of two adjacent checker bricks 100 in each layer are butted together to form a first through hole 70, and the second notches at the corners of three adjacent checker bricks 100 are butted together to form a second through hole 80.

[0050] In an optional example of the present invention, the cross section of the vent hole 20 is circular or hexagonal.

[0051] The utility model also proposes a heat storage body 200 with airflow interconnected in the horizontal direction. The heat storage body 200 is formed by stacking a plurality of checker bricks 100. In order to ensure the overall structural stability of the heat storage body, when the checker bricks 100 are stacked, when each layer of checker bricks is stacked together, a gap of 8 mm is left between the side walls of each two checker bricks 100 in contact, so that the semicircular first notches on each two checker bricks 100 between the side walls (parallel surfaces) of the two checker bricks 100 are butted to form three first through holes 70, and the single second notches at the intersection of the corners of the three checker bricks 100 are butted to form a second through hole 80. After one layer (lower layer) of checker bricks is stacked, the second layer (upper layer) of checker bricks is stacked, such as Figure 4 As shown, the center of the checker brick of the upper layer is located at the intersection of the corners of the three checker bricks of the lower layer, and the three positioning bosses 50 on the second end surface of the checker brick of the upper layer are respectively located in the positioning grooves 40 on the upper end surfaces of the three checker bricks of the lower layer.

[0052] The utility model proposes a heat storage body 200 with interconnected airflow in the horizontal direction, and its stacking structure enables adjacent layers to form a stable structure with each other, and the upper and lower layers are staggered, and the second guide grooves of the checker bricks 100 of the upper layer are respectively connected with the first guide grooves 30 of the three checker bricks 100 of the lower layer, so that the airflow can not only flow in the vertical direction between the two layers of checker bricks, but also flow in the horizontal direction between the two layers of checker bricks, thereby improving the overall through-porosity and heat transfer efficiency of the heat storage body, and having the effect of increasing the hot air temperature.

[0053] The utility model proposes a heat storage body 200 with horizontal airflow interconnection, wherein each checker brick 100 has a positioning groove 40 and a first guide groove 30 on the first end face 11 of the brick body 10, the positioning groove 40 is connected to the first guide groove 30, and then all the vents 20 are connected together through the first guide groove 30 and the positioning groove 40, so that a single checker brick 100 can be interconnected in the horizontal direction, and the horizontal interconnection rate of each vent 20 of a single checker brick 100 reaches 100%, and the minimum flow rate of adjacent through holes is 33%; at the same time, the upper and lower layers are staggered, and the vents 20 of the lower checker brick 100 are connected to the vents 20 of multiple checker bricks 100 in the upper layer through the first guide groove 30, so that the overall horizontal interconnection rate of the heat storage body 200 reaches 100%, and the minimum flow rate of adjacent through holes is 33%, which further improves the overall through-hole rate and heat transfer efficiency of the heat storage body.

[0054] In an optional example, to ensure practicality, the diameter difference between the large diameter end and the small diameter end of the vent hole 20 is 2 to 5 mm; the cross section of the vent hole 20 is circular or hexagonal. The inner diameter of the positioning groove 40 is slightly larger than the outer diameter of the positioning boss 50, so that the positioning boss 50 can be smoothly placed in the positioning groove 40. The depth of the positioning groove 40 is greater than the depth of the first guide groove 30, which facilitates the fixing of adjacent layers to each other.

[0055] The checker brick 100 and the heat storage body 200 proposed in the utility model utilize the positioning groove 40 on the first end face 11 of the brick body 10, the first guide groove 30 and the second guide groove 60 on the second end face 12 of the upper brick body 10 to achieve the effect of horizontal interconnection, thereby improving the overall through-porosity and heat transfer efficiency of the checker brick heat storage body, and having the effect of increasing the hot air temperature.

[0056] The checkered brick 100 and the heat storage body 200 provided by the utility model have simple structure and are easy to manufacture.

[0057] The detailed explanation of the above-mentioned embodiments is only intended to explain the present invention so as to facilitate a better understanding of the present invention. However, these descriptions cannot be interpreted as limitations on the present invention for any reason. In particular, the various features described in different embodiments may also be arbitrarily combined with each other to form other embodiments. Unless there is a clear description to the contrary, these features should be understood to be applicable to any embodiment and are not limited to the described embodiments.

Claims

1. A checker brick with horizontal airflow, comprising a brick body, a plurality of ventilation holes being provided on the brick body, characterized in that: The brick body has a first end face and a second end face that are arranged opposite to each other, each of the vents passes through the first end face and the second end face, a first guide groove and at least one positioning groove are provided on the first end face, the positioning groove is connected to at least one of the vents, and the first guide groove is connected to the positioning groove, each of the vents is connected to the first guide groove or the positioning groove, and a positioning boss is provided on the second end face to align with the positioning groove, and the outer diameter of the positioning boss is smaller than the outer diameter of the positioning groove.

2. The horizontally air-connected checker brick according to claim 1, characterized in that: The first flow guiding groove is directly connected to at least one of the vent holes in the positioning groove.

3. The horizontally air-connected checker brick according to claim 1, characterized in that: The depth of the positioning groove is greater than the depth of the first guide groove.

4. The horizontally air-interconnected checker brick according to claim 1, characterized in that: A second flow guiding groove is formed on the second end surface, and the second flow guiding groove is aligned with the first flow guiding groove.

5. The horizontally air-interconnected checker brick according to claim 1, characterized in that: Each of the vent holes is a tapered vent hole whose diameter gradually increases from the first end surface to the second end surface.

6. The checker brick with horizontal airflow interconnection according to any one of claims 1 to 5, characterized in that: The positioning groove is circular, elliptical or polygonal and is connected to at least three of the vent holes.

7. The horizontally intercommunication checker brick according to claim 6, characterized in that: The brick body is a regular hexagonal prism, the first end face and the second end face are respectively the top face and the bottom face of the regular hexagonal prism, and each of the ventilation holes is opened perpendicularly to the first end face.

8. The horizontally intercommunication checker brick according to claim 7, characterized in that: Nineteen ventilation holes are evenly distributed on the brick body, three positioning grooves are evenly distributed on the first end surface, and each positioning groove is connected to four ventilation holes.

9. The horizontally intercommunication checker brick according to claim 8, characterized in that: The first flow guiding groove is polygonal in shape, and the first flow guiding groove is directly connected to at least three of the vent holes in each of the positioning grooves.

10. The horizontally intercommunication checker brick according to claim 9, characterized in that: Two first notches extending vertically are formed on each side wall of the brick body, and second notches extending vertically are formed on each corner of the brick body.

11. A heat storage body with horizontally interconnected airflows, characterized in that: The heat storage body is formed by stacking a plurality of checker bricks as described in claim 10. When each layer of checker bricks is stacked, the first notches on the contacting side walls of two checker bricks are butted together to form a first through hole, and the corners of three checker bricks are butted together to form a second through hole. The center of the checker brick of the upper layer is located at the intersection of the corners of the three checker bricks of the lower layer, and the three positioning bosses of the upper checker bricks are respectively placed in the positioning grooves of the three checker bricks of the lower layer.

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