CN202039080U - Heat accumulating lattice brick for a blast-furnace hot blast stove - Google Patents
Heat accumulating lattice brick for a blast-furnace hot blast stove Download PDFInfo
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- CN202039080U CN202039080U CN2011201043909U CN201120104390U CN202039080U CN 202039080 U CN202039080 U CN 202039080U CN 2011201043909 U CN2011201043909 U CN 2011201043909U CN 201120104390 U CN201120104390 U CN 201120104390U CN 202039080 U CN202039080 U CN 202039080U
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Abstract
A heat accumulating lattice brick for a blast-furnace hot blast stove comprises a brick body, wherein a plurality of vertically-penetrating lattice holes are formed on the brick body; each lattice hole comprises a cross section gradually-contracting section and a cross section gradually-expanding section, which are arranged symmetrically from top to bottom relative to the middle cross section of the brick body; each lattice hole takes the shape that two ends are thick and the middle is thin; and the cross section outline of the cross section gradually-contracting section and the cross section gradually-expanding section along the central axis is formed in a manner that three convex or concave arcs taking the central axis as the criterion are tangent, convex arcs are close to the upper end face and the lower end face of the brick body, and the concave arc is close to the middle of the brick body. A lattice hole channel built by the lattice bricks is a corrugated pipe type channel contracting and expanding periodically, the convection and heat exchange capabilities of the surface are strong, the scouring resistance and the abrasion resistance are strong, the heat and shock resistance and the resistance to thermal stress breakage are high, and the technical problems that the dust stacks and the lattice holes are blocked are solved. Grooves are formed on the upper and lower end faces of the lattice brick body to form a horizontal channel on the combination face of the upper-layer lattice bricks and the lower-layer lattice bricks, so that the airflow distribution is uniform.
Description
Technical field
The utility model relates to the blast funnace hot blast stove heat storage, refers to a kind of blast funnace hot blast stove accumulation of heat checker brick as the heat exchange intermediate medium particularly.
Background technology
Hotblast stove is as the high-temperature thermal storage type heat-exchanger rig, built a large amount of heat storages in its regenerator by laying bricks or stones, in the heat transfer process of hotblast stove, heat storage is as the heat exchange intermediate medium, by periodic accumulation of heat (burning the campaign) and heat release (on air), realize the high wind-warm syndrome air blast of blast furnace.The thermal property of heat storage directly has influence on the thermo-efficiency and the blast furnace blast temperature levels of hotblast stove, and then has influence on the technico-economical comparison such as energy consumption, combustion intensity of blast furnace.
The heat storage that hotblast stove is commonly used is checker brick.Prior art research mostly is by means such as equivalent depth of dwindling checkerwork cell size, attenuate checker brick and raising unit volume heat transfer sheet areas, improves the thermal property of checker brick, improves heat exchange efficiency, increases the service life.Granted publication number is that Φ 28～Φ 10mm, checkerwork cell number are 31～61 porous honeycomb checker brick for the Chinese patent of CN201072233Y " porous honeycomb checker brick " discloses a kind of pore diameter range, by reducing the checkerwork cell diameter, increase checkerwork cell quantity, improving checker brick heat transfer sheet area and increase checker brick heating-surface area and accumulation of heat volume.Yet, be subjected to the restriction of checker brick requirement of strength, cause the increase rate of heat transfer sheet area limited.Simultaneously, its vertical through holes is the equal diameter passage, and surface film thermal conductance is low, has restricted the further raising of its heat exchange efficiency.
Publication number is that the Chinese patent " a kind of heat exchanger reinforced heat exchanger " of CN1595042A discloses a kind of spiral or vane-type heat exchange rotational flow strengthening device, by the swirl-flow devices of some amount is set in the pore of fire-resistant checker brick, make checker brick through hole inner fluid streamlined flow be converted into the intensive rotational flow, thereby attenuate hole wall laminar sub-layer thickness, the strengthening surface convective heat exchange also improves heat-transmission efficient.Granted publication number is a kind of checker brick that adopt the inducer group to strengthen the checkerwork cell heat exchange for the Chinese patent of CN201232067Y " checker brick that are used for blast funnace hot blast stove " discloses, by the inducer group that circumferentially evenly is provided with at interval at the checkerwork cell inwall, realize the rotation of air-flow in the checkerwork cell, reach the purpose of strengthening the heat exchange of checkerwork cell wall.The technical scheme of these two patents is for being provided with swirl-flow devices or inducer group in the through hole of checker brick, its weak point is that it has not only increased the manufacture difficulty and the resistance to flow of checker brick, and the thermal stresses that has also increased the swirl-flow devices refractory materials is simultaneously peeled off the risk of stopping up with through hole.
Publication number is that the Chinese patent " hotblast stove combined thermal storage body " of CN1414117A discloses a kind of combined thermal storage body of being made up of gitter brick body and checker brick, and that the trellis form of checker brick can be is square, in rectangle, circle or the Polygons any; The gitter brick body can be in right cylinder, cone-shaped body or the spheroid any.Compare with the checker brick heat storage of existing whole perforation, the gas-flow resistance of combined thermal storage body increases at 5～10% o'clock, and then the heating-surface area of unit volume can improve more than 50%.Its weak point is: the integrated structure heat storage has increased manufacture difficulty and resistance to flow equally, especially structure special-shaped gitter brick, the thermal stresses that has also increased simultaneously the gitter brick refractory materials is peeled off the risk of stopping up with through hole, and has reduced the comprehensive stability of heat storage.
Granted publication number discloses a kind of porous waviness honeycomb lattice in brick for the Chinese patent of CN201688705U " porous waviness honeycomb lattice brick ", these checker brick are to overlook the prism that direction is an equilateral hexagon, comprise upper surface, lower surface and sidewall, described checker brick surface is provided with the complete checkerwork cell of a plurality of wavinesss, be respectively arranged with the identical waviness of spacing half hole on each sidewall, one 1/3rd waviness hole respectively is set on each rib, solves the less than normal and heat exchange area raising problem of difficult of band circular hole checker brick heat transfer area.Though the waviness checkerwork cell has been expanded the heat transfer sheet area of checkerwork cell effectively, but heat transfer boundary condition there are differences between Wave crest and wave trough, cause waviness checkerwork cell temperature difference heat stress big, replace in the change procedure with heat release in the checker brick heat absorption, cause that easily crest refractory materials thermal stresses peels off, not only worsen the heat exchange effect of checker brick, also may cause the checkerwork cell passage to stop up.
Document " preparation and the application of hotblast stove heat storage high emissivity energy-saving coating " (iron and steel, 2007,42 (12), 81-84) literary composition has been reported at high radiation coating of stove fillings surface preparation and effect thereof, by at 350m
3And 1750m
3Application on the blast funnace hot blast stove makes hot blast temperature improve 57 ℃ and 28 ℃ respectively, reduces the fluctuation of wind pushing temperature simultaneously, reduces the exhaust gas emission temperature, and fuel economy consumes about 10%.Though the high radiant rate coating has strengthened the radiation heat transfer performance that checkerwork cell is avoided, strengthened the radiation heat transfer between the radiating gas dative wall surface of the hole, but because the checkerwork cell diameter is little, the average ray stroke of gas radiation is short, radiation heat transfer is less to comprehensive heat exchange contribution, simultaneously, is mainly non-polar molecule in the air on air, be difficult for radiative transfer takes place, thereby influenced the practical effect of high radiant rate coating.
Granted publication number for the Chinese patent of CN201318798Y " novel porous checker brick " disclose a kind of vertical through holes by the equal diameter section with become the porous checker brick that diameter portion constitutes, become the oblique wide aperture that links to each other on diameter portion collar extension and the brick body and constitute horn-like passage, the parallel, horizontal passage that communicates with the equal diameter section is arranged on the outer bottom of equal diameter section; It piles up method is that adjacent checker brick horizontal channel communicates on an aspect, and the horizontal direction of being convenient to air-flow flows, and being up and down that the small-bore connects the wide aperture between the checker brick, strengthens convective heat exchange by the sudden change of checkerwork cell shape.Its weak point is: equal diameter section and the quick variation that becomes diameter portion interface section area, cause the airflow scouring serious wear, be that the small-bore is connected with the wide aperture between the checker brick up and down particularly, because the sudden change of through hole sectional area, the thermal stresses of violent and inner fovea part of causing wearing and tearing is peeled off, and has increased the resistance to flow of through hole and the risk of obstruction.
Summary of the invention
The purpose of this utility model will provide a kind of surperficial convective heat exchange ability strong exactly, blast funnace hot blast stove accumulation of heat checker brick with the damaged ability of antiscour wearing and tearing, anti-thermal shock and thermal stresses, the technical problem that air-flow skewness, dust are piled up the dative hole plug in the solution checkerwork cell.
For achieving the above object, the designed blast funnace hot blast stove accumulation of heat checker brick of the utility model comprise the brick body, offer the checkerwork cell that several vertically run through on the brick body.Described checkerwork cell by with respect to the meta cross section of brick body from top to bottom the cross section converging transition and the cross section divergent segment of symmetric arrangement constitute, described checkerwork cell be two ends thick in the middle of thin shape.
Further, in order to guarantee the rounding off of checkerwork cell passage crest and trough, described cross section converging transition and cross section divergent segment are formed by three sections tangential that with the central axis are the benchmark convex or concave along the cross section contour of central axis, near brick body upper and lower end face is the evagination camber line, near brick body middle part is the indent camber line, described evagination camber line is identical with the radius of indent camber line, and evagination camber line radian is half of imploded arcs bank degree.
Again further, described brick body is the equilateral hexagon prism.Described brick body is provided with identical, the equally distributed complete checkerwork cell of spacing; Also be provided with identical, the equally distributed half-space of spacing hole on each side wall surface of described brick body; Also be provided with 1/3rd checkerwork cells on each rib of described brick body, make checker brick build the back by laying bricks or stones and form complete checkerwork cell passage.The quantity of described complete checkerwork cell is 7,19,31,37,61 or 91, and the quantity in the half-space hole on corresponding each side wall surface of brick body is respectively 1,2,1,3,4 or 5.
Further, the upper and lower end face of described brick body is provided with the groove that is used to be communicated with adjacent checkerwork cell, forms the horizontal channel at levels checker brick bonding surface, impels the air-flow uniform distribution; For avoiding the checkerwork cell dislocation of each layer checker brick, guarantee the continuity of checkerwork cell passage, the upper surface of described brick body is provided with locked groove, and the lower surface of described brick body is provided with and locked groove size and the corresponding boss of quantity.
Advantage of the present utility model is: the checkerwork cell passage of designed blast funnace hot blast stove accumulation of heat checker brick adopts cross section converging transition and cross section divergent segment structure, and the cross section contour that wherein hangs down is tangent evagination and the design of indent camber line, the checkerwork cell of every layer of checker brick forms a complete contraction and expansion segment, the multilayer checker brick are built the checkerwork cell passage of formation by laying bricks or stones for periodically shrinking and the bellows-type passage of expanding, and the disturbance by bellows-type passage medium wave peak and trough convection cell, strengthened checkerwork cell channel surface convective heat exchange ability.In addition,, improved the damaged ability of antiscour wearing and tearing, anti-thermal shock and thermal stresses of bellows-type passage, solved the technical problem that dust is piled up the dative hole plug owing to guaranteed the crest of checkerwork cell bellows-type passage, the rounding off of trough.Be provided with by the checker work upper and lower end face with two parallel grooves of adjacent edge of checker brick regular hexagon, form the horizontal channel at levels checker brick bonding surface, impelled the uniform distribution of air-flow.
Compare with the conical checkerwork cell of routine, checkerwork cell wall expanding area doubles, and the heat exchange strengthening effect significantly improves.By the locked groove of brick body upper surface and the mutual interlock of boss of lower surface, in the building process of multilayer checker brick, avoided the checkerwork cell dislocation of each layer checker brick, guarantee the continuity of checkerwork cell passage, improved the resistance to overturning of regenerator lattice brick.
Description of drawings
Fig. 1 is the plan structure synoptic diagram of the utility model blast funnace hot blast stove accumulation of heat checker brick.
Fig. 2 is the A-A sectional structure synoptic diagram among Fig. 1.
Fig. 3 is the checkerwork cell channel architecture synoptic diagram after the combination of multilayer checker brick.
Fig. 4 is the two dimensional structure synoptic diagram after the combination of polylith checker brick.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As depicted in figs. 1 and 2, blast funnace hot blast stove accumulation of heat checker brick of the present utility model comprise the brick body 1 of the prismatic bodily form of equilateral hexagon, offer several checkerwork cells that vertically runs through 2 on the brick body 1.Checkerwork cell 2 by with respect to the meta cross section 1a of brick body 1 from top to bottom the cross section converging transition 2a and the cross section divergent segment 2b of symmetric arrangement constitute, checkerwork cell 2 be two ends thick in the middle of thin shape.Cross section converging transition 2a and cross section divergent segment 2b are formed by three sections tangential that with the central axis are the benchmark convex or concave along the cross section contour of central axis, near brick body 1 upper and lower end face is evagination camber line a, near brick body 1 middle part is indent camber line b, described evagination camber line a is identical with the radius of indent camber line b, and evagination camber line a radian is half of indent camber line b radian.The checkerwork cell 2 of every layer of checker brick forms a complete contraction and expansion segment, the multilayer checker brick are built checkerwork cell 2 passages of formation by laying bricks or stones for periodically shrinking and the bellows-type passage of expanding, and the disturbance by bellows-type passage medium wave peak and trough convection cell, strengthened checkerwork cell 2 channel surface convective heat exchange abilities.
In the actual fabrication, brick body 1 is provided with identical, the equally distributed complete checkerwork cell 2 of spacing; Also be provided with identical, the equally distributed half-space of spacing hole 3 on each side wall surface of brick body 1; Also be provided with 1/3rd checkerwork cells 4 on each rib of brick body 1.The quantity of complete checkerwork cell 2 can be 7,19,31,37,61 or 91, and the quantity in the half-space hole 3 on corresponding brick body 1 each side wall surface is respectively 1,2,1,3,4 or 5.
The upper surface of brick body is provided with locked groove 1c, and the lower surface is provided with and locked groove 1c size and the corresponding boss 1d of quantity.In the building process of multilayer checker brick, checkerwork cell 2 dislocation of each layer checker brick are avoided in the mutual interlock of boss 1d of locked groove 1c and upper strata brick body 1 by lower floor's brick body 1, guarantee the continuity of checkerwork cell 2 passages, have improved the resistance to overturning of regenerator lattice brick.Checkerwork cell channel architecture after the combination of multilayer checker brick as shown in Figure 3.The upper and lower end face of brick body 1 is provided with groove 1b, is used to be communicated with adjacent checkerwork cell 2, forms levels checker brick bonding surface horizontal channel, impels the air-flow uniform distribution.Two dimensional structure after the combination of polylith checker brick as shown in Figure 4.
Claims (10)
1. blast funnace hot blast stove accumulation of heat checker brick, comprise brick body (1), offer several checkerwork cells that vertically runs through (2) on the brick body (1), it is characterized in that: described checkerwork cell (2) by with respect to the meta cross section (1a) of brick body (1) from top to bottom the cross section converging transition (2a) and the cross section divergent segment (2b) of symmetric arrangement constitute, described checkerwork cell (2) be two ends thick in the middle of thin shape.
2. blast funnace hot blast stove accumulation of heat checker brick according to claim 1, it is characterized in that: described cross section converging transition (2a) and cross section divergent segment (2b) are formed by three sections tangential that with the central axis are the benchmark convex or concave along the cross section contour of central axis, near brick body (1) upper and lower end face is evagination camber line (a), near brick body (1) middle part is indent camber line (b), described evagination camber line (a) is identical with the radius of indent camber line (b), and evagination camber line (a) radian is half of indent camber line (b) radian.
3. blast funnace hot blast stove accumulation of heat checker brick according to claim 1 and 2 is characterized in that: described brick body (1) is the equilateral hexagon prism; Described brick body (1) is provided with identical, the equally distributed complete checkerwork cell of spacing (2); Also be provided with identical, the equally distributed half-space of spacing hole (3) on each side wall surface of described brick body (1); Also be provided with 1/3rd checkerwork cells (4) on each rib of described brick body (1).
4. blast funnace hot blast stove accumulation of heat checker brick according to claim 3, it is characterized in that: the quantity of described complete checkerwork cell (2) is 7,19,31,37,61 or 91, and the quantity in the half-space hole (3) on each side wall surface of corresponding brick body (1) is respectively 1,2,1,3,4 or 5.
5. blast funnace hot blast stove accumulation of heat checker brick according to claim 1 and 2 is characterized in that: the upper and lower end face of described brick body (1) is provided with the groove (1b) that is used to be communicated with adjacent checkerwork cell (2).
6. blast funnace hot blast stove accumulation of heat checker brick according to claim 3 is characterized in that: the upper and lower end face of described brick body (1) is provided with the groove (1b) that is used to be communicated with adjacent checkerwork cell (2).
7. blast funnace hot blast stove accumulation of heat checker brick according to claim 4 is characterized in that: the upper and lower end face of described brick body (1) is provided with the groove (1b) that is used to be communicated with adjacent checkerwork cell (2).
8. blast funnace hot blast stove accumulation of heat checker brick according to claim 5 is characterized in that: the upper surface of described brick body is provided with locked groove (1c), and the lower surface of described brick body is provided with and locked groove (1c) size and the corresponding boss of quantity (1d).
9. blast funnace hot blast stove accumulation of heat checker brick according to claim 6 is characterized in that: the upper surface of described brick body is provided with locked groove (1c), and the lower surface of described brick body is provided with and locked groove (1c) size and the corresponding boss of quantity (1d).
10. blast funnace hot blast stove accumulation of heat checker brick according to claim 7 is characterized in that: the upper surface of described brick body is provided with locked groove (1c), and the lower surface of described brick body is provided with and locked groove (1c) size and the corresponding boss of quantity (1d).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201043909U CN202039080U (en) | 2011-04-12 | 2011-04-12 | Heat accumulating lattice brick for a blast-furnace hot blast stove |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201043909U CN202039080U (en) | 2011-04-12 | 2011-04-12 | Heat accumulating lattice brick for a blast-furnace hot blast stove |
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| CN202039080U true CN202039080U (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201043909U Expired - Fee Related CN202039080U (en) | 2011-04-12 | 2011-04-12 | Heat accumulating lattice brick for a blast-furnace hot blast stove |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032056A (en) * | 2014-06-12 | 2014-09-10 | 北京北科新特技术有限公司 | Straight rib hole lattice brick |
| CN108179244A (en) * | 2018-03-19 | 2018-06-19 | 郑州大学 | A kind of uniform gas distribution brick of monolithic devices hot-blast stove |
| CN109595962A (en) * | 2018-10-12 | 2019-04-09 | 山西臣功新能源科技有限公司 | A kind of solid electric heat-storage device and its heat accumulation method |
| CN111850212A (en) * | 2020-08-14 | 2020-10-30 | 中冶京诚工程技术有限公司 | Checker brick for hot blast stove |
| CN111876165A (en) * | 2020-08-19 | 2020-11-03 | 鞍山华泰环能工程技术有限公司 | Coke oven regenerator main wall structure, coke oven regenerator and coke oven |
| CN112063786A (en) * | 2020-09-28 | 2020-12-11 | 中冶京诚工程技术有限公司 | Checker brick with gas channel |
| CN112080603A (en) * | 2020-09-28 | 2020-12-15 | 中冶京诚工程技术有限公司 | Checker brick with gas channel |
-
2011
- 2011-04-12 CN CN2011201043909U patent/CN202039080U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032056A (en) * | 2014-06-12 | 2014-09-10 | 北京北科新特技术有限公司 | Straight rib hole lattice brick |
| CN108179244A (en) * | 2018-03-19 | 2018-06-19 | 郑州大学 | A kind of uniform gas distribution brick of monolithic devices hot-blast stove |
| CN109595962A (en) * | 2018-10-12 | 2019-04-09 | 山西臣功新能源科技有限公司 | A kind of solid electric heat-storage device and its heat accumulation method |
| CN109595962B (en) * | 2018-10-12 | 2023-12-12 | 山西臣功新能源科技有限公司 | Solid electric heat storage device and heat storage method thereof |
| CN111850212A (en) * | 2020-08-14 | 2020-10-30 | 中冶京诚工程技术有限公司 | Checker brick for hot blast stove |
| CN111876165A (en) * | 2020-08-19 | 2020-11-03 | 鞍山华泰环能工程技术有限公司 | Coke oven regenerator main wall structure, coke oven regenerator and coke oven |
| CN112063786A (en) * | 2020-09-28 | 2020-12-11 | 中冶京诚工程技术有限公司 | Checker brick with gas channel |
| CN112080603A (en) * | 2020-09-28 | 2020-12-15 | 中冶京诚工程技术有限公司 | Checker brick with gas channel |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20160412 |
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| CF01 | Termination of patent right due to non-payment of annual fee |