CN111981851A - Grate with flow dividing function - Google Patents
Grate with flow dividing function Download PDFInfo
- Publication number
- CN111981851A CN111981851A CN202010590955.2A CN202010590955A CN111981851A CN 111981851 A CN111981851 A CN 111981851A CN 202010590955 A CN202010590955 A CN 202010590955A CN 111981851 A CN111981851 A CN 111981851A
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- China
- Prior art keywords
- grate
- top surface
- hole
- holes
- aperture
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/04—Casings; Linings; Walls; Roofs characterised by the form, e.g. shape of the bricks or blocks used
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
- C21B9/10—Other details, e.g. blast mains
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Incineration Of Waste (AREA)
Abstract
The invention discloses a grate with a flow dividing function, which is arranged between the top of a grate supporting structure and the bottom of a small-hole checker brick, wherein top surface holes are distributed on the top surface, bottom surface holes are distributed on the bottom surface, the aperture, the transverse spacing and the longitudinal spacing of the top surface holes are matched with the aperture, the transverse spacing and the longitudinal spacing of the small holes on the small-hole checker brick, a plurality of top surface holes are converged to the top end of one corresponding bottom surface hole at the bottom end, the center of the bottom surface hole is positioned at the center of gravity of all corresponding top surface holes, and the area of the bottom surface hole is larger than the total area of all corresponding top surface. The invention combines the structures of the grate and the splitter plate which are widely adopted by the prior small-aperture checker bricks, has stable and firm structure, saves the material consumption, is simple and convenient to install, and not only plays a role of splitting flow, but also improves the ventilation efficiency by matching the top surface hole and the bottom surface hole.
Description
Technical Field
The invention belongs to the field of metallurgical blast furnaces, and particularly relates to a grate with a flow dividing function.
Background
The hot blast stove is one of important devices in blast furnace ironmaking production, and the improvement of the hot blast temperature is an effective measure for improving the yield of the blast furnace and reducing the coke ratio. The checker bricks in the heat storage chamber are carriers for heat exchange of the hot blast stove, and the heat storage efficiency and the heat release efficiency of the checker bricks directly influence the temperature of hot blast air, the heat efficiency of the hot blast stove and the like.
The high-wind-temperature top-combustion hot blast stove generally adopts the small-hole checker bricks as heat storage carriers, the heat storage area can be increased by properly reducing the size of the small-hole checker bricks, the hot wind temperature and the heat efficiency of the hot blast stove are improved, the engineering cost is reduced, but the thickness of the small-hole checker bricks is very thin and needs to be supported.
At present, a supporting structure matched with the small-hole checker bricks is a split combined structure of a pillar, a grate and a flow distribution plate or the pillar, a joist, the grate and the flow distribution plate, the flow distribution plate and the grate are fixed by a positioning sleeve, the flow distribution plate is divided into a standard flow distribution plate, a positioning flow distribution plate and a special-shaped flow distribution plate, the manufacturing and installation processes of the supporting structure are complex, the positioning sleeve cannot play a role in accurate positioning in use, and the stability and the air permeability of the upper checker bricks are influenced.
Disclosure of Invention
The invention aims to provide a grate with a flow dividing function, which combines the structures of the grate and a flow dividing plate widely adopted by the existing small-aperture checker bricks into a whole, has stable and firm structure, saves the material consumption, is simple and convenient to install, and has the functions of dividing flow and improving the ventilation efficiency due to the matching of top surface holes and bottom surface holes.
The technical scheme adopted by the invention is as follows:
the utility model provides a grate with reposition of redundant personnel function, install between grate bearing structure top and aperture checker brick bottom, the top surface distributes has the top surface hole, the bottom surface distributes has the bottom surface hole, the aperture, horizontal interval and the longitudinal separation in top surface hole all with the aperture of aperture on the small hole checker brick, horizontal interval and longitudinal separation phase-match, a plurality of top surface holes converge to a corresponding bottom surface hole top in the bottom, the center of bottom surface hole is located the focus of all corresponding top surface holes, the total area of area is greater than all corresponding top surface holes.
Further, one bottom surface hole corresponds to three top surface holes.
Furthermore, when the grate supporting structure is a pillar, the aperture of the bottom hole is matched with that of the pillar; when the grate supporting structure is a pillar and a joist, the aperture of the bottom hole is matched with the diameter of the joist.
Furthermore, the grate is formed by splicing a plurality of grate units.
Further, the grate unit is manufactured by casting.
Further, the outer contour of the grate unit is determined by the inner diameter of the wall of the stove, the arrangement of the uprights and the size range of the grate unit.
Further, the outer contour of the grate unit is a regular hexagon.
Further, the thickness of the grate is determined by the material of the grate, the working temperature, the load of the small-hole checker bricks and the span of the grate.
The invention has the beneficial effects that:
the invention combines the structures of the grate and the splitter plate which are widely adopted by the prior small-aperture checker bricks, has stable and firm structure, saves the material consumption and is simple and convenient to install; the cooperation of the top surface hole and the bottom surface hole not only plays a role in shunting, but also improves the ventilation efficiency.
Drawings
FIG. 1 is a schematic view of a grate unit in an embodiment of the present invention.
Fig. 2 is a cross-sectional view taken at a-a in fig. 1.
Wherein Φ 1, a1, B1 are the aperture, the transverse spacing, the longitudinal spacing of the top surface hole respectively, Φ 2, a2, B2 are the aperture, the longitudinal spacing, the transverse spacing of the bottom surface hole respectively, H is the thickness of the grate, C1 is the depth of the top surface hole, D1 is the depth of the transition section between the top surface hole and the corresponding bottom surface hole.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in figures 1 and 2, the grate with the flow dividing function is installed between the top of a grate supporting structure and the bottom of a small-hole checker brick, top surface holes are distributed on the top surface, bottom surface holes are distributed on the bottom surface, the aperture phi 1, the transverse spacing A1 and the longitudinal spacing B1 of the top surface holes are matched with the aperture, the transverse spacing and the longitudinal spacing of the small holes on the small-hole checker brick, a plurality of top surface holes are converged to the top end of one corresponding bottom surface hole at the bottom end, and the center of the bottom surface hole is positioned at the center of gravity and the area of all corresponding top surface holes are larger than the total area of all corresponding top surface holes. The invention combines the structures of the grate and the splitter plate which are widely adopted by the prior small-aperture checker brick into a whole, has stable and firm structure, saves the material consumption and is simple and convenient to install; the cooperation of the top surface hole and the bottom surface hole not only plays a role in shunting, but also improves the ventilation efficiency.
As shown in fig. 1, in this embodiment, one bottom surface hole corresponds to three top surface holes.
In the embodiment, when the grate supporting structure is a pillar, the aperture phi 2 of the bottom surface hole is matched with the pillar; when the grate supporting structure is a pillar and a joist, the aperture of the bottom hole is matched with the diameter of the joist.
As shown in fig. 1, in the present embodiment, the grate is formed by splicing a plurality of grate sub-units; the grate unit is manufactured by casting, such as lost foam casting; the outer contour of the grate unit is determined by the inner diameter of the wall of the hot-blast stove, the arrangement of the upright columns and the size range of the grate unit, for example, the outer contour of the grate unit is regular hexagon; the thickness H of the grate is determined by the material of the grate, the working temperature, the load of the small-hole checker bricks and the span of the grate.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (8)
1. The utility model provides a grate with reposition of redundant personnel function, installs between grate bearing structure top and aperture checker brick bottom, its characterized in that: the top surface is distributed with top surface holes, the bottom surface is distributed with bottom surface holes, the aperture, the transverse spacing and the longitudinal spacing of the top surface holes are matched with the aperture, the transverse spacing and the longitudinal spacing of the small holes on the small-hole checker brick, a plurality of top surface holes are converged to the top end of a corresponding bottom surface hole at the bottom end, and the center of the bottom surface hole is positioned at the center of gravity and the area of all the corresponding top surface holes and is larger than the total area of all the corresponding top surface holes.
2. The grate with a flow dividing function according to claim 1, wherein: one bottom surface hole corresponds to three top surface holes.
3. The grate with a flow dividing function according to claim 1, wherein: when the grate supporting structure is a pillar, the aperture of the bottom hole is matched with that of the pillar; when the grate supporting structure is a pillar and a joist, the aperture of the bottom hole is matched with the diameter of the joist.
4. A grate having a flow dividing function according to any one of claims 1 to 3, wherein: the grate is formed by splicing a plurality of grate units.
5. The grate with a flow dividing function according to claim 4, wherein: the grate unit is made by casting.
6. The grate with a flow dividing function according to claim 4, wherein: the outer contour of the grate unit is determined by the inner diameter of the wall of the hot blast stove, the arrangement of the vertical columns and the size range of the grate unit.
7. The grate with a flow dividing function according to claim 4, wherein: the outer contour of the grate unit is a regular hexagon.
8. A grate having a flow dividing function according to any one of claims 1 to 3, wherein: the thickness of the grate is determined by the material of the grate, the working temperature, the load of the small-hole checker bricks and the span of the grate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010590955.2A CN111981851A (en) | 2020-06-24 | 2020-06-24 | Grate with flow dividing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010590955.2A CN111981851A (en) | 2020-06-24 | 2020-06-24 | Grate with flow dividing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111981851A true CN111981851A (en) | 2020-11-24 |
Family
ID=73441941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010590955.2A Pending CN111981851A (en) | 2020-06-24 | 2020-06-24 | Grate with flow dividing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111981851A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135494A (en) * | 2007-10-15 | 2008-03-05 | 鞍钢重型机械有限责任公司冶炼设备制造厂 | Hole design of six-petal plum blossom hole hot-blast stove grate |
| CN102321776A (en) * | 2011-10-22 | 2012-01-18 | 河南省豫兴热风炉工程技术有限公司 | Hot-blast furnace combined grate suitable for stacking checker bricks with different structures |
| CN202671561U (en) * | 2012-05-18 | 2013-01-16 | 山东省冶金设计院股份有限公司 | Transition device for grate and lattice bricks of internal combustion hot blast stove |
| CN103290156A (en) * | 2013-05-15 | 2013-09-11 | 萨伯丁·安东 | Grating plate device of lattice brick air heating furnace |
| CN108531676A (en) * | 2018-06-19 | 2018-09-14 | 鞍钢重型机械有限责任公司 | A kind of tap hole fire grate and stove fillings support system |
-
2020
- 2020-06-24 CN CN202010590955.2A patent/CN111981851A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135494A (en) * | 2007-10-15 | 2008-03-05 | 鞍钢重型机械有限责任公司冶炼设备制造厂 | Hole design of six-petal plum blossom hole hot-blast stove grate |
| CN102321776A (en) * | 2011-10-22 | 2012-01-18 | 河南省豫兴热风炉工程技术有限公司 | Hot-blast furnace combined grate suitable for stacking checker bricks with different structures |
| CN202671561U (en) * | 2012-05-18 | 2013-01-16 | 山东省冶金设计院股份有限公司 | Transition device for grate and lattice bricks of internal combustion hot blast stove |
| CN103290156A (en) * | 2013-05-15 | 2013-09-11 | 萨伯丁·安东 | Grating plate device of lattice brick air heating furnace |
| CN108531676A (en) * | 2018-06-19 | 2018-09-14 | 鞍钢重型机械有限责任公司 | A kind of tap hole fire grate and stove fillings support system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201124 |
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| RJ01 | Rejection of invention patent application after publication |