CN207247907U - Extend the new type water beam in air-guiding wall service life - Google Patents
Extend the new type water beam in air-guiding wall service life Download PDFInfo
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- CN207247907U CN207247907U CN201720921010.8U CN201720921010U CN207247907U CN 207247907 U CN207247907 U CN 207247907U CN 201720921010 U CN201720921010 U CN 201720921010U CN 207247907 U CN207247907 U CN 207247907U
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- guiding wall
- supporting plate
- air
- wind
- seamless steel
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Abstract
The new type water beam that the utility model extends the air-guiding wall service life belongs to the metallurgical technical field that portion structure is wanted with cement pelletizing vertical furnace weight, it is related to a kind of new type water beam that air-guiding wall service life can be obviously prolonged under palletizing shaft furnace internal high temperature environment, including some seamless steel pipes, the two rows of superposition welding of the seamless steel pipe point, steel supporting plate is connected to by welding at the top of two rows of seamless steel pipes, build wind-guiding wall brick on supporting plate by laying bricks or stones, pass through solder design between seamless steel pipe and supporting plate；The utility model is simple in structure, and the supporting plate for often arranging steel pipe top is divided to two to be arranged in parallel, and the gap between two supporting plates is as locating slot, to substitute the positioning convex platform in original structure.Not only supporting plate heating surface area reduces the structure, while adds one times than original structure for the section of weld joint of heat conduction, substantially eliminates the thermal deformation of supporting plate.
Description
Technical field
The utility model belongs to the metallurgical technical field that portion structure is wanted with cement pelletizing vertical furnace weight, is related to a kind of energy
The new type water beam of air-guiding wall service life is obviously prolonged under palletizing shaft furnace internal high temperature environment.
Background technology
Air guide wall for vetical furnace is the distinct inventions of China shaft furnace worker, i.e.,：Hot wind cooling section is direct by air-guiding wall
Furnace roof drying bed is introduced, for drying the green-ball into stove.With furnace pressure is reduced, promote air-flow reasonable layout, electricity saving and energy saving
And improve the obvious effect of mass rate of production.
Air-guiding wall is hollow structure, is vertically installed at position of center line in shaft furnace, its action principle is that shaft furnace lower part is cold
But the part high-temperature hot-air of section is introduced directly into furnace roof drying bed by air-guiding wall internal cavities, is used for the drying into stove green-ball.Lead
Brattice is built by laying bricks or stones by quarl and formed, and always weighs about 35-60 tons or so（Depending on shaft furnace size）, the wind-guiding as air-guiding wall supporting body
Wall water beam, is generally welded to form, water flowing cooling in steel pipe, the weldering of Shui Liang tops by the two rows of superpositions of more high-quality thick-walled seamless steel pipes point
There is steel supporting plate, air-guiding wall is built by laying bricks or stones on supporting plate.
Water beam of wind leading wall working environment in stove is severe, is subject to multiple corrode such as high temperature dust air-flow and high-temperature oxydation to make
With and influence of thermal deformation, service life is generally 10-12 months or so.Now repeatedly improved through my company, to water beam partition plate,
The native defects such as babinet inner face steel plate have carried out Curve guide impeller again, achieve very good effect, and steel pipe seepy question obtains substantially
To solve, the service life extends to more than 16 months, and offline old water beam is reusable after simple overhaul.
But notable with water beam of wind leading wall service life extends, brick the problem of coming off of splitting in air-guiding wall bottom then highlights
Come：Often water beam is still intact is continuing with, but air-guiding wall bottom brick to form hole because splitting to come off, and gradually expands, danger
And to air-guiding wall monolithic stability；Part stream changes stream trend and air flow method in stove by hole formation " short circuit ",
The working of a furnace is seriously affected, adverse effect is brought to the yield and quality of pelletizing mineral products.To ensure shaft furnace normal operation, production unit
Have to shutdown maintenance, hot material is emptied, manual repair air-guiding wall in stove is entered after cooling down, often repairing once generally needs blowing out
60 it is small when more than, but be only capable of maintain 30 days or so, it is larger to Influence of production.
Split the reason for coming off on air-guiding wall bottom brick, analyze through field observation, have directly with the structure of water beam of wind leading wall
Relation is connect, referring to attached drawing 1.
Steel supporting plate is welded with original design water back portion seamless steel pipe, air-guiding wall brick masonry is on supporting plate.To prevent from leading
Brattice lateral displacement on supporting plate, supporting plate top are welded with the semicircle boss of positioning, the groove phase with air-guiding wall bottom brick bottom surface again
It is chimeric.
There are following birth defect for this class formation：
1. there is larger temperature gradient between steel pipe, supporting plate and positioning convex platform, steel knot is easily led under continuous high temperature environment
Fracture or deformation occur for structure junction.
It is difficult between positioning convex platform and seamless steel pipe across the heat absorbed under steel supporting plate, hot environment by seamless steel pipe
Recirculated water take away, the heat distortion amount of boss is more than steel supporting plate, causes boss weld seam to split, boss bending arch upward, its bend arch
Rise part by air-guiding wall bottom brick along groove inner wall outwardly against making it split, while produce some cracks, cause bottom brick broken
Split and local shedding forms hole.And support of the brick layer above bottom brick due to losing lower floor's brick, in downlink stream, frit
Under effect, gradual slump, makes hole constantly expand.
The weld seam that the heat of supporting plate relies primarily on both sides is transmitted on the seamless steel pipe of top, then by recirculated water band in steel pipe
Walk.But the heat-conducting section product that only two weld seams are formed is less than normal, and supporting plate temperature is far above temperature of steel pipe, causes supporting plate to become because of heat
Shape and it is uneven, the avalanche for exacerbating bottom brick comes off；Material is once changed to stainless steel plate by manganese steel plate for this, but still difficulty disappears
Except uneven phenomenon.
2. air-guiding wall bottom brick sets groove to have inadequate natural endowment towards on the side of supporting plate, it is being subject to from inside to outside lateral
During power, groove inner wall easily forms stress concentration and is broken first, especially arches upward in positioning convex platform bending under effect, bottom brick is by recessed
Bursting apart at groove, it is almost inevitable to come off.
The content of the invention
To solve the above-mentioned problems, the utility model provides a kind of it is possible to prevente effectively from splitting for bottom wind-guiding wall brick is de-
Fall, decrease or even eliminate supporting plate thermal deformation, so as to extend the new type water beam in air-guiding wall service life.
The utility model extends the new type water beam in air-guiding wall service life, including some seamless steel pipes, the seamless steel pipe point
Two rows superposition welding, two rows of seamless steel pipes tops are connected to steel supporting plate, have built by laying bricks or stones and led on supporting plate by welding
Brattice brick, passes through solder design between seamless steel pipe and supporting plate；The wind-guiding wall brick is towards being provided with positioning in the one side of supporting plate
Protrusion, is provided with positioning groove, the center line of the positioning protrusion and the center line phase of positioning groove on corresponding another side
It is mutually parallel and in the same perpendicular；In upper and lower adjacent two wind-guidings wall brick, positioning groove on a wind-guiding wall brick with it is another
Positioning protrusion on one wind-guiding wall brick is engaged；
Preferably, two blocks of supporting plates being parallel to each other are provided with the top of each row's seamless steel pipe, and are provided between two supporting plates
Locating slot, the center line of the locating slot and the centerline parallel of seamless steel pipe；Wind-guiding wall brick is provided with the one side of positioning protrusion
Towards supporting plate, and the wind-guiding wall brick being in contact with supporting plate is bottom wind-guiding wall brick, and the positioning protrusion on bottom wind-guiding wall brick is stretched
Enter locating slot and be engaged with locating slot.
Preferably, it is 60mm, depth 30mm to position well width.
Preferably, plate thickness 30mm.
Preferably, the weld seam between seamless steel pipe and supporting plate is arranged to four.
Preferably, the cross section of positioning protrusion is semicircle, and radius is 28mm；The positioning groove is arc-shaped recessed
Groove, and radius is 30mm.
The utility model is simple in structure, and the supporting plate for often arranging steel pipe top is divided to two to be arranged in parallel, the seam between two supporting plates
Gap is as locating slot, to substitute the positioning convex platform in original structure.Not only supporting plate heating surface area reduces the structure, while is used for heat conduction
Section of weld joint add one times than original structure, substantially eliminate the thermal deformation of supporting plate.Wind-guiding wall brick is provided with positioning protrusion
One facing to supporting plate, positioning protrusion insertion locating slot is simultaneously engaged with locating slot so that wind-guiding wall brick locating effect is good.
Under identical lateral forces, the positioning protrusion on bottom wind-guiding wall brick can disperse stress, the far super original groove of intensity, together
When eliminate it is yielding bend the steel boss that arches upward, split the immediate cause to come off so as to eliminate bottom brick, the air-guiding wall longevity
Life can extend more than 30-50%, there is obvious economic benefit.
New structure water beam has decreased or even eliminated later stage air-guiding wall bottom and hole this industry problems has occurred, makes air-guiding wall
Service life significantly extends, and reduces the shaft furnace shutdown maintenance time, improves equipment operation rate and yield, and product quality is stablized.It is new
The use of water beam is reduced to be entered in stove until eliminating employee, and the work that air-guiding wall is repaired under the adverse circumstances of high-temperature dust is strong
Degree, is conducive to the safety and health of employee.In terms of material cost declining is saved, beam middle part minority supporting plate selective oxidation is removed water
Outside ablation, most of supporting plate in offline overhaul can secondary use, saved costliness stainless steel material expense and maintenance work
Amount.
Brief description of the drawings
Fig. 1 is water beam of wind leading wall structure diagram in the prior art.
Fig. 2 is the utility model integrated m odel schematic diagram.
Reference numeral：1- seamless steel pipes, 2- weld seams, 3- supporting plates, 4- positioning convex platforms, 5- wind-guiding wall bricks.
Embodiment
The new type water beam that the utility model extends the air-guiding wall service life includes some seamless steel pipes 1, and the seamless steel pipe 1 divides
Two rows superposition welding, often arranges the top of seamless steel pipe 1 and is connected with steel supporting plate 3 by welding, wind-guiding has been built by laying bricks or stones on supporting plate 3
Wall brick 5, is connected between seamless steel pipe 1 and supporting plate 3 by weld seam 2；Positioning protrusion is provided with the one side of the wind-guiding wall brick 5,
Positioning groove is provided with corresponding another side, the center line of the positioning protrusion and the center line of positioning groove are parallel to each other
And in same perpendicular；Positioning groove on a wind-guiding wall brick 5 and another air-guiding wall in adjacent two wind-guidings wall brick 5
Positioning protrusion on brick 5 is engaged；
Each top of row's seamless steel pipe 1 is provided with two blocks of supporting plates being parallel to each other 3, and is provided with positioning between two supporting plates 3
Groove, the center line of the locating slot and the centerline parallel of seamless steel pipe 1；The one side that wind-guiding wall brick 5 is provided with positioning protrusion is equal
Towards supporting plate 3, and the wind-guiding wall brick 5 being in contact with supporting plate 3 is bottom wind-guiding wall brick 5, the positioning protrusion on bottom wind-guiding wall brick 5
Stretch into locating slot and with determining fit depressions.Positioning well width is 60mm, depth 30mm.3 thickness of supporting plate is 30mm.
Weld seam 2 between seamless steel pipe 1 and supporting plate 3 is arranged to four.The cross section of positioning protrusion is semicircle, and radius
For 28mm；The positioning groove is circular groove, and radius is 30mm.
Center line after locating slot between positioning protrusion and supporting plate 3 on wind-guiding wall brick 5 coordinates overlaps, and error is little
In 1mm.
Weld seam 2 between seamless steel pipe 1 and supporting plate 3 is arranged to four.The utility model compared with prior art, eliminates
Longitudinal supporting plate 3, is changed to symmetrical two pieces, 3 thickness of supporting plate is by 20mm by the semicircle positioning convex platform 4 on supporting plate 3 by overall one piece
30mm is changed to, wide 60mm thickness 30mm locating slots are stayed among two blocks of supporting plates 3, two interior angle of locating slot is accumulated to form semicircle by weld seam
Groove, the locating slot as wind-guiding wall brick 5.Improve weld seam 2 between rear supporting plate 3 and seamless steel pipe 1 increases to four by original two,
At the same time 3 area of supporting plate reduce 32%, heat conduction cooling effect substantially improves, then without supporting plate 3 because of thermal deformation rough phenomenon.
Cancel semicircle positioning convex platform 4 and be then inherently eliminated bottom wind-guiding wall brick 5 and split the immediate cause to come off.
It is downward by original positioning groove that wind-guiding wall brick 5 is built by laying bricks or stones direction, positioning protrusion be changed to upwards positioning protrusion downward, it is fixed
Position groove is upward.Its effect is:Positioning groove of the force part of 5 lateral force resistance of wind-guiding wall brick by stress concentration, relatively weak
Intrados, is changed to that stress is easily scattered, the preferable boss periphery of intensity, is preferably minimized the bottom brick possibility to come off of splitting.
In building process, positioning groove can retain the unlikely loss of enough material-muds upwards, and mortar is full between brickwork joint, and air-guiding wall is overall
Property is more preferable.5 locating effect of wind-guiding wall brick is good, and without obscission of splitting, the air-guiding wall service life extends 40% or so.
The utility model technology solves later stage air-guiding wall bottom and the industry technology problem of hole occurs substantially, makes air-guiding wall
Service life extends 30 --- and 50%, reduce the shaft furnace blowing out repairing time, product quality is stablized, and improves equipment operation rate and yield,
Remarkable in economical benefits.The use of new technology, is reduced until eliminating worker at the production line into the interior adverse circumstances in high-temperature dust of stove
The labor intensity of lower repairing air-guiding wall, is conducive to the safety and health of employee.In terms of material cost, held in the palm except middle part is a small number of
Outside 3 selective oxidation ablation of plate, most of supporting plate 3 water beam is offline overhaul when repeat utilization, saved costliness stainless steel
Material expense and maintenance load.
Claims (5)
1. a kind of new type water beam for extending the air-guiding wall service life, including some seamless steel pipes（1）, the seamless steel pipe（1）It is divided to two
Row's superposition welding, two rows of seamless steel pipes（1）Top is connected to steel supporting plate by welding（3）, supporting plate（3）Upper block
Wind-guiding wall brick is built（5）, seamless steel pipe（1）With supporting plate（3）Between pass through weld seam（2）Connection；The wind-guiding wall brick（5）One side
On be provided with positioning protrusion, be provided with positioning groove on corresponding another side, the center line of the positioning protrusion and positioning are recessed
The center line of groove is parallel to each other and in same perpendicular；Adjacent two wind-guidings wall brick（5）In, a wind-guiding wall brick（5）On
Positioning groove and another wind-guiding wall brick（5）On positioning protrusion be engaged；
It is characterized in that：
Each row's seamless steel pipe（1）Top is provided with two blocks of supporting plates being parallel to each other（3）, and two supporting plates（3）Between be provided with it is fixed
Position groove, the center line and seamless steel pipe of the locating slot（1）Centerline parallel；Wind-guiding wall brick（5）It is provided with positioning protrusion
Simultaneously towards supporting plate（3）, and and supporting plate（3）The wind-guiding wall brick being in contact（5）For bottom wind-guiding wall brick（5）, bottom air-guiding wall
Brick（5）On positioning protrusion stretch into locating slot and be engaged with locating slot, in the center line and locating slot of the positioning protrusion
Heart line overlaps.
2. extend the new type water beam in air-guiding wall service life as claimed in claim 1, it is characterised in that：It is described positioning well width be
60mm, depth 30mm.
3. extend the new type water beam in air-guiding wall service life as claimed in claim 2, it is characterised in that：The supporting plate（3）Thickness is
30mm。
4. extend the new type water beam in air-guiding wall service life as claimed in claim 3, it is characterised in that：The seamless steel pipe（1）With support
Plate（3）Between weld seam（2）It is arranged to four.
5. extend the new type water beam in air-guiding wall service life as claimed in claim 4, it is characterised in that：The cross section of the positioning protrusion
For semicircle, and radius is 28mm；The positioning groove is circular groove, and radius is 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720921010.8U CN207247907U (en) | 2017-07-27 | 2017-07-27 | Extend the new type water beam in air-guiding wall service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720921010.8U CN207247907U (en) | 2017-07-27 | 2017-07-27 | Extend the new type water beam in air-guiding wall service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207247907U true CN207247907U (en) | 2018-04-17 |
Family
ID=61879502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720921010.8U Expired - Fee Related CN207247907U (en) | 2017-07-27 | 2017-07-27 | Extend the new type water beam in air-guiding wall service life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207247907U (en) |
-
2017
- 2017-07-27 CN CN201720921010.8U patent/CN207247907U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180417 Termination date: 20210727 |