CN2797379Y - Double layer shell blast branch tube for blast furnace - Google Patents
Double layer shell blast branch tube for blast furnace Download PDFInfo
- Publication number
- CN2797379Y CN2797379Y CN 200520109662 CN200520109662U CN2797379Y CN 2797379 Y CN2797379 Y CN 2797379Y CN 200520109662 CN200520109662 CN 200520109662 CN 200520109662 U CN200520109662 U CN 200520109662U CN 2797379 Y CN2797379 Y CN 2797379Y
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- CN
- China
- Prior art keywords
- shell
- blast
- blast furnace
- branch pipe
- double hull
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model provides a double-layer shell body branch blast tube for a blastfurnace, which comprises a metallic shell body and a refractory lining, wherein the refractory lining is arranged in the shell body, the shell body is designed in the structure of a double-layer shell body which is provided with an outer shell and an inner shell, and interlayer space is formed between the inner and the outer shells. A heat insulating layer is formed in the interlayer space by vacuum pumping, or the air, or a filled heat insulating material so that the heat insulating performance of the branch blast tube for the blastfurnace is raised, the heat loss of the temperature of blastfurnace egress wind is reduced and the coke ratio of smelting with the blastfurnace is reduced.
Description
Technical field
The utility model relates to the blast furnace hot-blast furnace equipment, is a kind of double hull blast branch pipe of blast furnace specifically.
Background technology
At present, though the blowpipe that blast furnace uses has various ways, its basic structure all is to adopt to build by laying bricks or stones or the pouring fireproof material liner in a single-layer metal housing.This structure mainly is to rely on to use different refractory materials and combination thereof, improve the working life and the heat-proof quality of liner, reduce the surface temperature of housing simultaneously, reduce heat lost by radiation, and then obtain and improve the effect of going into the actual wind-warm syndrome of stove, reducing the blast-furnace smelting coke ratio.Although the present blowpipe that uses, selecting for use of its inner lining structure and refractory materials is tending towards optimizing, but in actual production process, improve the working life of liner, must use the big compact refractory material of density to improve its intensity, this makes the thermal conductivity of refractory materials to increase; And the heat-insulating property inevitable requirement that will improve liner is used the lagging material that density is little, porosity is big, and this makes the intensity of refractory materials reduce again influences the life-span.Therefore, improve its intensity and reduce contradiction between its thermal conductivity, make the still big problem of surface temperature height, heat lost by radiation of ubiquity housing of present blast branch pipe of blast furnace because refractory materials itself exists.Especially in use,, can only be changed, be prevented that blowpipe from burning the generation of accident, influences the ordinary production of blast furnace thus by long damping down when blowpipe housing occurs when rubescent.
Summary of the invention
The purpose of this utility model is at the problems referred to above, and a kind of double hull blast branch pipe of blast furnace that can effectively improve heat insulation effect, the loss of minimizing surface radiating, reduce the blast-furnace smelting coke ratio is provided.
The technical scheme that realizes above-mentioned purpose is: a kind of double hull blast branch pipe of blast furnace includes metal shell and places the intravital refractory lining of shell.Its housing is to have the double-layer shell structure that forms mezzanine space between shell and inner casing and the inside and outside shell.The mezzanine space of this double-layer shell structure can be arranged to closed structure, by the formation of the air in self gap air gap thermofin; Perhaps form heat insulation vacuum interlayer by the mode that vacuumizes; The internal surface setting that reaches at shell approaches the radiation protective layer that constitutes by radiation shielding coating or aluminium; Also can be in mezzanine space fill insulant material, constitute the heat insulating layer.Said structure can effectively improve the heat-insulating property of blowpipe, reduces the heat lost by radiation of a tube-surface.
This blowpipe double-layer shell structure is under vacuum or air or lagging material insulation, the temperature of its inner casing can improve, for the thermal expansion amount that solves because of inside and outside shell there are differences the inner casing weld cracking that may cause, inner casing can be arranged to have the pipe structure of bellows piece, to avoid causing destruction to the inner casing weld seam because of thermal expansion.
This blowpipe is when being made up of swan neck, expansion joint, elbow and belly pipe, its expansion joint has metallic bellows of the enclosure of placing and the wavy metal ring that inner ring is connected to shell, upper end one short tube of its metallic bellows is connected with joint flange, and the lower end of corrugated tube connects the outer ring of wavy metal ring and is connected to the shell of housing corresponding end simultaneously.
The housing of this double hull blast branch pipe of blast furnace is when adopting vacuum or air insulating sandwich structure, if between inside and outside shell, gas blowby occurs, face presents localized hyperthermia or causes shell rubescent, can block blow-by gas passage by the method for in interlayer, injecting the lagging material slurry in perforate on the shell, thereby guarantee the normal use of blowpipe.When filling lagging material insulating sandwich structure in housing adopts, to cause lagging material to be blown bad if gas blowby occurs, also can blow by the method reparation of perfusion lagging material slurry and decrease the position, can keep the works better of blowpipe equally.Therefore, this double hull blast branch pipe of blast furnace not only heat-insulating property improves significantly with respect to the blowpipe of single hull structure, and be more convenient for safeguarding, be of value to the blowpipe raising in work-ing life, reduce delay ratio and blast-furnace smelting coke ratio that blast furnace is produced.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the utility model embodiment synoptic diagram.
Fig. 2 is the swan neck structural representation.
Fig. 3 is the expansion joint structural representation.
Fig. 4 is the elbow structure synoptic diagram.
Fig. 5 is the belly pipe structural representation.
Fig. 6 is the A-A schematic cross-section of Fig. 5.
Embodiment
In accompanying drawing 1, the double hull blast branch pipe of blast furnace is made up of swan neck 1, expansion joint 2, elbow 3, belly pipe 4.
As accompanying drawing 2, swan neck 1 is made up of shell 5, inner casing 6, refractory lining 7 and flange 8.Shell 5 is welded on respectively on the flange 8 with the lower end of inner casing 6, and inner casing 6 edges suitable for reading are welded on the inwall of shell 5, constitutes mezzanine space.
As accompanying drawing 3, expansion joint 2 mainly is made up of water conservancy diversion cartridge type inner casing 9, shell 10, shell short tube 11, metallic bellows 12, wavy metal ring 13, shell 14, inner casing 15, refractory lining 16 and upper and lower flange 17,18.The upper end of water conservancy diversion cartridge type inner casing 9 is embedded in the upper flange 17, shell 10 upper ends and upper flange 17 welding, the inner ring welding of lower end and wavy metal ring 13, the end opening of the outer ring of wavy metal ring 13 and metallic bellows 12 and the welding of the upper end of shell 14.Be welded on the upper flange 17 behind the connection shell short tube 11 suitable for reading of metallic bellows 12.Its shell 10, shell short tube 11, metallic bellows 12, wavy metal ring 13 constitute enclosed air space.And the lower end of inner casing 14 and shell 15 is welded on the lower flange 18, and the edge suitable for reading of inner casing 14 is welded in the inwall suitable for reading of shell 15, constitutes mezzanine space.As accompanying drawing 3, said structure is provided with two groups in the present embodiment.
As accompanying drawing 4, elbow 3 mainly is made up of shell 19, inner casing 20, refractory lining 21, two ends joint flange 22 and peep hole pipe 23.Shell 19 is welded on respectively on the flange 22 with the two ends of inner casing 20, peep hole pipe 23 makes to form the mezzanine space that seals by shell 19, inner casing 20, flange 22, space that peep hole pipe 23 constitutes welding together with their peristome respectively at the place of passing through mutually with outer, inner casing.
As accompanying drawing 5, accompanying drawing 6, belly pipe 4 mainly is made up of shell 24, inner casing 25, refractory lining 26, flange 27, winding-up shell 28 and sphere termination 29.Shell 24 is welded on respectively on flange 27 and the sphere termination 29 with the two ends of inner casing 25, winding-up shell 28 outside, inner casing passes through the place mutually and their weld, and the feasible space that is made of shell 24, inner casing 25, flange 27, winding-up shell 28, sphere termination becomes the mezzanine space of sealing.
When the utility model adopts the vacuum heat-insulation mode,, only need to obtain vacuum during fabrication according to a conventional method and get final product the formed mezzanine space of each parts.And when adopting lagging material heat insulation, between inside and outside shell, insert lagging material when only needing to make and get final product.
The utility model adopts the radioprotective structure inside the shell, can use the brushing radiation shielding coating, perhaps pastes the thin method of layer of aluminum.
Inner casing of the present utility model can be a metal tube, or has the metal tube of one section metallic bellows.
The utility model does not comprise and other irrelevant parts of the utility model the description of blowpipe.
Double-layer shell structure of the present utility model also is suitable for the blast branch pipe of blast furnace of other structure formation.
Claims (6)
1, a kind of double hull blast branch pipe of blast furnace includes metal shell and places the intravital refractory lining of shell, it is characterized in that: described housing is to have the double-layer shell structure that forms mezzanine space between shell and inner casing and the inside and outside shell.
2, double hull blast branch pipe of blast furnace according to claim 1 is characterized in that: described mezzanine space is the enclosed vacuum interlayer.
3, double hull blast branch pipe of blast furnace according to claim 1, it is characterized in that: the internal surface at shell is provided with radiation protective layer.
4, double hull blast branch pipe of blast furnace according to claim 1 is characterized in that: be filled with lagging material in mezzanine space.
5, double hull blast branch pipe of blast furnace according to claim 1 is characterized in that: described inner casing is the metal tube that is provided with bellows piece.
6, according to claim 1,2,3,4 or 5 described double hull blast branch pipe of blast furnace, it is characterized in that: form by swan neck, expansion joint, elbow and belly pipe, its expansion joint has corrugated tube of the enclosure of placing and the corrugated ring that inner ring is connected to shell, upper end one short tube of described corrugated tube is connected with joint flange, and the lower end of corrugated tube connects the outer ring of corrugated ring and is connected to the shell of housing corresponding end simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520109662 CN2797379Y (en) | 2005-06-04 | 2005-06-04 | Double layer shell blast branch tube for blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520109662 CN2797379Y (en) | 2005-06-04 | 2005-06-04 | Double layer shell blast branch tube for blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2797379Y true CN2797379Y (en) | 2006-07-19 |
Family
ID=36868615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520109662 Expired - Lifetime CN2797379Y (en) | 2005-06-04 | 2005-06-04 | Double layer shell blast branch tube for blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2797379Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042186A (en) * | 2019-05-10 | 2019-07-23 | 武汉钢铁有限公司 | A kind of low thermally conductive blast-furnace hot-air pipeline structure |
-
2005
- 2005-06-04 CN CN 200520109662 patent/CN2797379Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042186A (en) * | 2019-05-10 | 2019-07-23 | 武汉钢铁有限公司 | A kind of low thermally conductive blast-furnace hot-air pipeline structure |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150604 Granted publication date: 20060719 |