CN204939514U - Blast funnace hot blast stove hot air duct masonry construction - Google Patents
Blast funnace hot blast stove hot air duct masonry construction Download PDFInfo
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- CN204939514U CN204939514U CN201520619610.XU CN201520619610U CN204939514U CN 204939514 U CN204939514 U CN 204939514U CN 201520619610 U CN201520619610 U CN 201520619610U CN 204939514 U CN204939514 U CN 204939514U
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- insulation layer
- thermal insulation
- air duct
- working lining
- hot air
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Abstract
The utility model discloses a kind of blast funnace hot blast stove hot air duct masonry construction, and the thermal insulation layer mainly for blast funnace hot blast stove hot air duct masonry construction is fragile and design.The utility model blast funnace hot blast stove hot air duct masonry construction, comprises three-decker, is followed successively by working lining, thermal insulation layer, sprayed coating from outside to inside, be provided with dilatation joint between described working lining and thermal insulation layer.The utility model blast funnace hot blast stove hot air duct masonry construction, thermal expansion dilatation joint being arranged on the chien shih hot air duct working lining of thermal insulation layer and working lining can be efficiently absorbed, can not produce thermal insulation layer again and destroy, be that one stablizes effective blast-furnace hot-air pipeline masonry structure.
Description
Technical field
The utility model relates to a kind of hot air duct system of blast funnace hot blast stove, particularly relates to blast funnace hot blast stove hot air duct masonry construction.
Background technology
Hotblast stove is mainly used in blast furnace ironmaking field, and its Main Function is the warm air providing High Temperature High Pressure to blast furnace.Be connected by hot air duct between blast furnace and hotblast stove, the general temperature of hot air temperature in hot air duct more than 1200 DEG C, pressure is at more than 0.3MPa, warm air flow at high speed in hot air duct, and have fluctuation when temperature, pressure and flow velocity, therefore, in hot air duct, Working environment is very severe, goes wrong than being easier to.
In traditional hot air duct masonry construction, innermost layer is hot operation layer, and centre is thermal insulation layer, and outermost layer is sprayed coating, first ring design between sprayed coating and thermal insulation layer have together dilatation joint to absorb the expansion of working lining.Hot air duct at high operating temperatures, thermal insulation layer does not expand substantially, thermal expansion is mainly from working lining, and the dilatation joint of traditional hot air duct masonry construction is placed on the outside of thermal insulation layer, must produce thermal insulation layer when working lining expands and destroy, make thermal insulation layer produce crack, thus the masonry construction generation of hot air duct is destroyed, cause hot air duct not work, affect the production of blast furnace.
Utility model content
For the problems referred to above, the utility model provides a kind of working lining that can better absorb to expand and the blast funnace hot blast stove hot air duct masonry construction that can not damage thermal insulation layer.
For achieving the above object, the utility model blast funnace hot blast stove hot air duct masonry construction comprises three-decker, is followed successively by working lining, thermal insulation layer, sprayed coating from outside to inside, is provided with dilatation joint between described working lining and thermal insulation layer.
Preferably, described dilatation joint is semi-circular, is provided with refractory fibre ply of paper between described thermal insulation layer and working lining.
Preferably, high-temperature refractory fiber blanket is filled with in described dilatation joint.
Preferably, the annular cover block that described working lining comprises multiple annular lateral expansion seam, corresponding lateral expansion seam outer ledge is arranged; Distance between described adjacent transverse dilatation joint is 2 ~ 4 meters.
Preferably, what described working lining adopted is high alumina brick structure, and thickness is 140 ~ 200mm, and described thermal insulation layer is soft clay or lightweight aluminium ore structure, and thickness is 200 ~ 260mm, and described spray layer thickness is 50mm, and described dilatation joint thickness is 10 ~ 20mm.
Preferably, refractory fibre ply of paper is provided with between described sprayed coating and thermal insulation layer.
The utility model blast funnace hot blast stove hot air duct masonry construction, thermal expansion dilatation joint being arranged on the chien shih hot air duct working lining of thermal insulation layer and working lining can be efficiently absorbed, and can not produce destruction to thermal insulation layer is again that one stablizes effective hot air duct masonry structure.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1.
Fig. 2 is the A-A sectional drawing of Fig. 1.
Embodiment
Below in conjunction with Figure of description, the utility model blast funnace hot blast stove hot air duct masonry construction is further described.
As shown in Figure 1, the present embodiment blast funnace hot blast stove hot air duct masonry construction is the tubular structure of arranged transversely, comprise the working lining 2 directly contacted with hot-air channel 1, be arranged on the thermal insulation layer 3 outside working lining, thermal insulation layer 3 is outside equipped with sprayed coating 4, and the upper part between working lining 2 and thermal insulation layer 3 leaves semi-annular gap, as semi-circular dilatation joint 5, and resistant to elevated temperatures refractory fiber blanket is filled in dilatation joint 5, lower part between working lining 2 and thermal insulation layer 3 namely with on the thermal insulation layer of semi-circular dilatation joint 5 opposite segments arranges one deck refractory fiber paper 6.In order to absorb the lateral expansion of working lining, working lining 2 can arrange lateral expansion seam 8 every 2 ~ 4 meters, at the outward flange of lateral expansion seam 8, lateral expansion seam cover block 7 is set, dilatation joint is sealed by the structure connecting dilatation joint both sides by lateral expansion seam cover block 7, thus forms the complete job layer of hot-air channel.Lateral expansion seam 8 can absorb the lateral expansion displacement produced when working lining expands, and arranges lateral expansion seam cover block 7 simultaneously, prevents the high-temperature hot air in hot-air channel 1 from entering thermal insulation layer 3 and annular ex-pansion seam 5 through lateral expansion seam 8.
In hot-air channel 1, flow at high speed the warm air of High Temperature High Pressure, working lining 2 bears the warm air of High Temperature High Pressure, and warm air and thermal insulation layer are completely cut off, prevent the warm air of warm high pressure to the destruction of thermal insulation layer 3, warm air is sealed in block structure by sprayed coating 4 completely, prevents the tiny warm air through working lining 2 and thermal insulation layer 3 to produce destruction to steel pipe shell.Dilatation joint 5 is arranged between working lining 2 and thermal insulation layer 3, it is inner fills resistant to elevated temperatures refractory fiber blanket, and when producing thermal expansion under the environment of working lining 2 in High Temperature High Pressure, working lining 2 entirety is to top offset, its displacement expanded will be inflated seam 5 and absorb, and can not produce destroy thermal insulation layer 3.The refractory fiber paper 6 that corresponding semi-circular dilatation joint 5 is arranged simultaneously can be free to slide when can ensure that thermal expansion occurs working lining 2, and swell increment can be absorbed by lateral expansion seam 8 completely, thus avoids the destruction to thermal insulation layer 3.
What in practical application, the working lining of the present embodiment blast funnace hot blast stove hot air duct masonry construction adopted is high alumina brick structure, thickness can be 140 ~ 200mm, described thermal insulation layer can be soft clay or lightweight aluminium ore structure, thickness is 200 ~ 260mm, described spray layer thickness is 50mm, described dilatation joint thickness i.e. between thermal insulation layer and working lining gap width be 10 ~ 20mm.
The side that in the present embodiment, thermal insulation layer contacts with sprayed coating is also provided with refractory fiber paper 6.
Be to be understood that above is only preferred embodiment of the present utility model, the structure arranging dilatation joint between any thermal insulation layer at hot air duct masonry construction and working lining is all the scope that the utility model is protected.
Above; be only preferred embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection domain of the present utility model.Therefore, the protection domain that protection domain of the present utility model should define with claim is as the criterion.
Claims (3)
1. a blast funnace hot blast stove hot air duct masonry construction, is characterized in that: comprise three-decker, is followed successively by working lining, thermal insulation layer, sprayed coating from outside to inside, is provided with dilatation joint between described working lining and thermal insulation layer;
Described dilatation joint is semi-circular, is provided with refractory fibre ply of paper between described thermal insulation layer and working lining;
High-temperature refractory fiber blanket is filled with in described dilatation joint;
What described working lining adopted is high alumina brick structure, and thickness is 140 ~ 200mm, and described thermal insulation layer is soft clay or lightweight aluminium ore structure, and thickness is 200 ~ 260mm, and described spray layer thickness is 50mm, and described dilatation joint thickness is 10 ~ 20mm.
2. blast funnace hot blast stove hot air duct masonry construction according to claim 1, is characterized in that: the annular cover block that described working lining comprises multiple annular lateral expansion seam, corresponding lateral expansion seam outer ledge is arranged; Distance between described adjacent transverse dilatation joint is 2 ~ 4 meters.
3. blast funnace hot blast stove hot air duct masonry construction according to claim 1, is characterized in that: be provided with refractory fibre ply of paper between described sprayed coating and thermal insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520619610.XU CN204939514U (en) | 2015-08-17 | 2015-08-17 | Blast funnace hot blast stove hot air duct masonry construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520619610.XU CN204939514U (en) | 2015-08-17 | 2015-08-17 | Blast funnace hot blast stove hot air duct masonry construction |
Publications (1)
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| CN204939514U true CN204939514U (en) | 2016-01-06 |
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| CN201520619610.XU Active CN204939514U (en) | 2015-08-17 | 2015-08-17 | Blast funnace hot blast stove hot air duct masonry construction |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107828928A (en) * | 2017-11-03 | 2018-03-23 | 山西太钢不锈钢股份有限公司 | A kind of hot air duct |
| CN107937646A (en) * | 2017-11-03 | 2018-04-20 | 山西太钢不锈钢股份有限公司 | A kind of building method of hot air duct |
| CN108165694A (en) * | 2018-03-09 | 2018-06-15 | 中冶京诚工程技术有限公司 | A kind of hot air duct structure and hot air delivery system |
| CN108193010A (en) * | 2018-03-09 | 2018-06-22 | 中冶京诚工程技术有限公司 | The inside lining building structure of hot air duct and hot air duct junctions inside lining building structure |
| CN110791605A (en) * | 2019-11-05 | 2020-02-14 | 中冶武汉冶金建筑研究院有限公司 | Method for preparing pipeline of blast furnace hot blast stove |
-
2015
- 2015-08-17 CN CN201520619610.XU patent/CN204939514U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107828928A (en) * | 2017-11-03 | 2018-03-23 | 山西太钢不锈钢股份有限公司 | A kind of hot air duct |
| CN107937646A (en) * | 2017-11-03 | 2018-04-20 | 山西太钢不锈钢股份有限公司 | A kind of building method of hot air duct |
| CN108165694A (en) * | 2018-03-09 | 2018-06-15 | 中冶京诚工程技术有限公司 | A kind of hot air duct structure and hot air delivery system |
| CN108193010A (en) * | 2018-03-09 | 2018-06-22 | 中冶京诚工程技术有限公司 | The inside lining building structure of hot air duct and hot air duct junctions inside lining building structure |
| CN108165694B (en) * | 2018-03-09 | 2023-04-21 | 中冶京诚工程技术有限公司 | Hot air pipeline structure and hot air conveying system |
| CN108193010B (en) * | 2018-03-09 | 2023-04-28 | 中冶京诚工程技术有限公司 | Lining building structure of hot air pipeline and three-fork lining building structure of hot air pipeline |
| CN110791605A (en) * | 2019-11-05 | 2020-02-14 | 中冶武汉冶金建筑研究院有限公司 | Method for preparing pipeline of blast furnace hot blast stove |
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