CN201421264Y - Cast steel converter flue - Google Patents
Cast steel converter flue Download PDFInfo
- Publication number
- CN201421264Y CN201421264Y CN2009200388666U CN200920038866U CN201421264Y CN 201421264 Y CN201421264 Y CN 201421264Y CN 2009200388666 U CN2009200388666 U CN 2009200388666U CN 200920038866 U CN200920038866 U CN 200920038866U CN 201421264 Y CN201421264 Y CN 201421264Y
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- CN
- China
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- cooling water
- water pipe
- cast steel
- matrix
- base body
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- Expired - Fee Related
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Abstract
The utility model relates to a cast steel converter flue, which comprises a base body and a cooling water pipe, and is characterized in that the base body and the cooling water pipe are made from caststeel, the cooling water pipe is wound into a circular spring shape with a plurality of circular rings which are overlapped, one end of the cooling water pipe is vertical upwards, and the other end thereof bends to the circular inner side from the circular bottom to be vertical upwards; the base body is circular, the cooling water pipe is arranged in the base body and is tightly combined with thebase body, one end of the cooling water pipe extends out of the upper side of the circular ring of the base body, and the other end thereof extends out of the inner side of the circular ring of the base body. The utility model adopts the cast steel to substitute for the existing cast iron to produce the cast steel converter flue, can effectively avoid the air gap between the base body of the caststeel converter flue and the cooling water pipe, prolongs the service life of the cast steel converter flue, therefore prolonging the service life of the metallurgy kiln, saving the production cost,in addition, the cooling water pipe and the base body are tightly combined, so the cooling effect of the steel brick is improved, and the mechanical capacity of the cast steel converter flue is improved.
Description
Technical field
The utility model relates to a kind of metallurgy high temperature stove, specifically relates to a kind of cast steel rotary furnace flue of metallurgy high temperature stove, belongs to metallurgical ironmaking technology field.
Background technology
Converter flue is the device that cooling is provided for the metallurgy high temperature stove, can protect the furnace shell of metallurgy high temperature stove to avoid the erosion and the mechanical wear of high temperature fluid in the body of heater, prolongs the metallurgy high temperature stove life-span, guarantees that its safety and stability produces.In a single day cooling device goes wrong, and the metallurgy high temperature kiln is stop production to overhaul comprehensively, will bring heavy economic losses.So the life-span of life-span of converter flue decision metallurgy high temperature stove is metallurgy high temperature stove long-service life high-efficiency, energy-conservation important assurance.
The converter flue material that current domestic and international metallurgical industry is generally adopted is based on cast iron, and still, there are many deficiencies in the cast iron converter flue.With most popular spheroidal graphite cast-iron converter flue is example, it has the following disadvantages: (1) spheroidal graphite cast-iron converter flue must add anti-carburization coating outside the cooling duct, make between passage and the matrix and form air gap, and air gap makes the converter flue heat transmission resistance increase more than 1,000 times, worsen the heat-transfer effect of converter flue, increase converter flue working face temperature, quicken the converter flue breakage; (2) be covered with the globular graphite (particle diameter 0.025～0.150mm) that varies in size on the spheroidal graphite cast-iron matrix, countless small holes have been equivalent to form after globular graphite is oxidized, constituted the cradle that crack and crackle take place, quickened the expansion of crack and crackle, thereby cause converter flue to shorten service life, increase resource consumption, be unfavorable for the converter flue long-life energy-saving; (3) when the large-scale spheroidal graphite casting of casting, C, S, P are pushed to liquid zone easily in the column crystallization process, form a segregation thing enrichment region in center equiax crystal district, the percentage elongation at cast(ing) surface and center is existed than big-difference, the surface percentage elongation is greater than the centre more than one times, promote the generation and the expansion of spheroidal graphite cast-iron crack or crackle, be unfavorable for converter flue longevity; (4) linear expansion coefficient of spheroidal graphite cast-iron is more steady in variation below 600 ℃, but more than 600 ℃ then the rising with temperature rapid irreversible " growth " takes place, when temperature during greater than 709 ℃ matrix phase transformation has taken place, the coefficient of expansion and internal stress sharp increase, its breakage speeds up; (5) spheroidal graphite cast-iron thermal conductivity and thermal shock resistance are all relatively poor, and its thermal conductivity factor only is 30wm
-2K
-1, be unfavorable for the efficient cooling of converter flue.
The utility model content
In order to overcome the problem that prior art exists, the purpose of this utility model has been to provide a kind of cast steel rotary furnace flue that utilizes new cast steel substrate material to replace traditional cast iron materials, and guarantee that the cooling water pipe surface is little molten in casting process, make cooling water pipe after cast, combine closely with matrix, eliminated air gap, improve the performance of cast steel rotary furnace flue, prolonged the service life of metallurgy high temperature stove.
For achieving the above object, the utility model solves the technical scheme that its technical problem adopts and is:
A kind of cast steel rotary furnace flue, comprise matrix and cooling water pipe, it is characterized in that described matrix and cooling water pipe all made by cast steel material, cooling water pipe turns to the coil spring shape, a plurality of circles overlap, one end of cooling water pipe vertically upward, the other end from the bottom of circle after circular inside bend vertically upward; Matrix is an annular, and cooling water pipe is arranged in matrix, combines closely with matrix, and stretch out from the annulus upside of matrix an end of cooling water pipe, and another end protrudes upward from the inboard of matrix annulus.
Aforesaid cast steel rotary furnace flue, it is characterized in that described cooling water pipe turns to the coil spring shape after, its bottom be tilting, a side height, opposite side is low.
The cross section of aforementioned cooling water pipe is oval, and the length ratio of oval-shaped major axis and minor axis is 0.5～0.7.
The beneficial effects of the utility model are: the utility model adopts cast steel material to replace existing cast iron materials to make cast steel rotary furnace flue, can effectively avoid producing air gap between cast steel rotary furnace flue matrix and cooling water pipe, prolong the life-span of converter flue life-span and then prolongation metallurgical furnace, save production cost; Make cooling water pipe and matrix combine closely, improve the cooling effect of converter flue, improve the mechanical performance of cast steel rotary furnace flue.
Description of drawings
Fig. 1 is the structural representation of cast steel rotary furnace flue of the present utility model;
Fig. 2 is the vertical view of Fig. 1.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of cast steel rotary furnace flue of the present utility model; Fig. 2 is the vertical view of Fig. 1.
As shown in Figure 1, 2, cast steel rotary furnace flue of the present utility model comprises matrix 2 and cooling water pipe 1, and matrix 2 and cooling water pipe 1 all are to adopt cast steel material to make.Cooling water pipe 1 is turned to the coil spring shape, and a plurality of circles are superimposed, an end of cooling water pipe 1 vertically upward, the other end to circular inside bend, then vertically upward, all makes progress two ends of cooling water pipe 1 in the bottom of coil spring shape.Matrix 2 is an annular, and the part that cooling water pipe 1 is turned to coil spring is surrounded, and makes cooling water pipe 1 be arranged in matrix 2, and combines closely with matrix 2.Stretch out from the annulus upside of matrix 2 end of cooling water pipe 1, and another end protrudes upward from the inboard of matrix 2 annulus.
In addition, after cooling water pipe 1 turned to the coil spring shape, its bottom can be tilting, a side height, and opposite side is low.
In addition, the cross section of cooling water pipe 1 is oval, and the length ratio of oval-shaped major axis and minor axis is 0.5～0.7.
Embodiment 1: the cross section of cooling water pipe 1 is oval, and the length ratio of oval-shaped major axis and minor axis is 0.5.
Embodiment 2: the cross section of cooling water pipe 1 is oval, and the length ratio of oval-shaped major axis and minor axis is 0.6.
Embodiment 3: the cross section of cooling water pipe 1 is oval, and the length ratio of oval-shaped major axis and minor axis is 0.7.
The utility model all is chosen to be cast steel with the material of cooling water pipe 1 and the material of matrix 2, has effectively avoided a series of problems of using anti-carburization coating and bringing; Cooling water pipe 1 is cast directly over matrix 2 inside; in casting process; utilize composite solid cooling medium to pass through cooling water pipe 1 with fluid; protection cooling water pipe 1 melts and does not change, and impels cooling water pipe 1 surface in casting process little molten, fits tightly with matrix 2; do not produce air gap; and the process of setting of control matrix 2, the condition of formation consecutive solidification, the performance of raising cast steel rotary furnace flue.
Guaranteed that in the process of building cooling water pipe 1 surface is little molten in casting process, prevented the generation of air gap, reduced cooling drag, prolonged the service life of cast steel rotary furnace flue, and then prolonged the service life of metallurgy high temperature stove; Simultaneously, make cooling water pipe 1 after cast, combine closely, improved the cooling effect of cast steel rotary furnace flue with matrix 2.
The cardinal principle that cast steel rotary furnace flue of the present utility model is applied to the metallurgy high temperature stove is: the exit region that cast steel rotary furnace flue is placed the metallurgy high temperature stove, cooling medium (such as: water) by certain flow velocity from a port of the cooling water pipe 1 of cast steel rotary furnace flue by cast steel rotary furnace flue inside, by this way, heat is passed to the matrix 2 of cast steel rotary furnace flue from metallurgy high temperature stove inside, cooling medium is taken heat out of the metallurgy high temperature stove from matrix 2 again, make the furnace shell of metallurgy high temperature stove avoid high temperature erosion, thereby prolong the service life of metallurgy high temperature stove.Regulate the cooling performance of cast steel rotary furnace flue by regulating cooling water flow and flow velocity.
The foregoing description does not limit the utility model in any form, and all employings are equal to the technical scheme that mode obtained of replacement or equivalent transformation, all drop in the protection domain of the present utility model.
Claims (4)
1, cast steel rotary furnace flue, comprise matrix and cooling water pipe, it is characterized in that described matrix and cooling water pipe all made by cast steel material, cooling water pipe turns to the coil spring shape, a plurality of circles overlap, one end of cooling water pipe vertically upward, the other end from the bottom of circle after circular inside bend vertically upward; Matrix is an annular, and cooling water pipe is arranged in matrix, combines closely with matrix, and stretch out from the annulus upside of matrix an end of cooling water pipe, and another end protrudes upward from the inboard of matrix annulus.
2, cast steel rotary furnace flue according to claim 1, it is characterized in that described cooling water pipe turns to the coil spring shape after, its bottom be tilting, a side height, opposite side is low.
3, cast steel rotary furnace flue according to claim 1 and 2, the cross section that it is characterized in that described cooling water pipe is for oval.
4, cast steel rotary furnace flue according to claim 3 is characterized in that the length ratio of described oval-shaped major axis and minor axis is 0.5～0.7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200388666U CN201421264Y (en) | 2009-05-08 | 2009-05-08 | Cast steel converter flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200388666U CN201421264Y (en) | 2009-05-08 | 2009-05-08 | Cast steel converter flue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201421264Y true CN201421264Y (en) | 2010-03-10 |
Family
ID=41807923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200388666U Expired - Fee Related CN201421264Y (en) | 2009-05-08 | 2009-05-08 | Cast steel converter flue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201421264Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234357A (en) * | 2013-04-10 | 2013-08-07 | 中国恩菲工程技术有限公司 | Metallurgical furnace |
-
2009
- 2009-05-08 CN CN2009200388666U patent/CN201421264Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234357A (en) * | 2013-04-10 | 2013-08-07 | 中国恩菲工程技术有限公司 | Metallurgical furnace |
| CN103234357B (en) * | 2013-04-10 | 2016-02-24 | 中国恩菲工程技术有限公司 | metallurgical furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100310 Termination date: 20140508 |