CN2745934Y - Blast furnace air intake device - Google Patents
Blast furnace air intake device Download PDFInfo
- Publication number
- CN2745934Y CN2745934Y CN 200520023983 CN200520023983U CN2745934Y CN 2745934 Y CN2745934 Y CN 2745934Y CN 200520023983 CN200520023983 CN 200520023983 CN 200520023983 U CN200520023983 U CN 200520023983U CN 2745934 Y CN2745934 Y CN 2745934Y
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- CN
- China
- Prior art keywords
- labyrinth type
- blast furnace
- double
- stage casing
- expansion pipe
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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 relates to a blast furnace air intake device, comprising a belly pipe, an angle head, the central section of the straight pipe and a shell which are connected into integration. The integrality of the blast furnace air intake device is a labyrinth type structure, wherein, a labyrinth type compensator is connected with the middle segment of the central section; the lower of the middle segment of the central section is connected with a lower labyrinth type compensator of which the lower is connected with the lower segment of the central section; the lower segment of the central section is connected with the belly pipe by the angle head to comprise an air intake path; the upper labyrinth type compensator and the lower labyrinth type compensator are provided with double-layer stainless inner linings of which inner walls are respectively rammed with fire-resistant material thermal insulation layers; thermal insulation layers are respectively provided between the inner linings; all shells of the device are double-layer stainless shells; thermal insulation layers are filled between the double-layer steel shells; the surface of the inner steel shell is rammed with fire-resistant material layers. This device has scientific and reasonable design, reliable performance, and can satisfy the operating requirements of the big-sized and medium-sized blast furnaces, and provides the powerful guarantee for the high-wind temperature, high-top pressure and high-intensity smelting of the blast furnace; the blast furnace air intake device is especially suitable for the 1000 stage-5000 stage large-sized blast furnace.
Description
Technical field
The utility model relates to a kind of air intake equipment, particularly relates to a kind of blast furnace air inlet device.
Background technology
At present, domestic large blast furnace generally uses high wind-warm syndrome, high roof pressure in order to improve combustion intensity.The highest wind-warm syndrome can reach 1400 ℃, and roof pressure designs generally at 200～550Kpa.These technical indicators are had higher requirement to blast furnace air supply system.As everyone knows, air inlet device is the end and the branch of whole supply air system, and its windage is greater than other position, not only want the compensate for dilatation amount, also will have dismantled and assembled property and suitable regulated quantity, how solve high temperature and sealing, the reliability that improves air inlet device is to improve the key of blast furnace draft capacity.Traditional method is to make sphere with refractory materials, is pressing heat-resisting aluminum silicate fiber rope to seal hot blast about 1200 ℃ between concavo-convex sphere, and contact solves compensation rate and regulated quantity by sphere.But in actual the use, because of cold and hot expansion or the error that produces is installed when needing adjusting, concavo-convex sphere certainly leads to the changing of the relative positions, and the displacement meeting reduces its stopping property greatly.In case seal badly, the mechanical property of steel construction can sharply descend with the rising of temperature.Be difficult to the hot blast of the thousands of degree of sealing by box hat and expander, very easily cause air inlet device rubescent or leak out, cause financial loss the work-ing life that promptly reduces air inlet device again.
Summary of the invention
The purpose of this utility model aims to provide a kind ofly to be peeled away box hat and expander, the multiple layer refractory layer is set, good heat-insulation effect, the reliable blast furnace air inlet device of sealing property.
Realize that foregoing invention purpose technical scheme is: a kind of blast furnace air inlet device, comprise the belly pipe that connects as one, elbow and straight tube stage casing, housing, its structural feature is, its integral body is maze-type structure, wherein go up, following labyrinth type loop expansion pipe saves and is connected respectively with in the stage casing, the ventilation duct that saves in its ventilation duct and the stage casing connects, the bottom of following labyrinth type loop expansion pipe is saved down with the stage casing and is connected, save elbow under the stage casing and belly pipe connects to form air intake passage, the labyrinth type loop expansion pipe is provided with the double-layer stainless steel liner, be respectively equipped with refractory insulating layer between the liner, the housing of device all is the double-layer stainless steel shell, is filled with thermofin between the double-deck box hat, and the surperficial ramming of interior box hat has flame retardant coating to form the twice thermofin.
Owing to adopted said structure, two-layer refractory materials and two cavitys are arranged between loop expansion pipe and the hot blast, the conduction of trap heat and convection current effectively remains between 50～100 ℃ the working temperature at loop expansion pipe place, guarantees the mechanical property of loop expansion pipe.Staged floating seal formula structure is adopted in the junction of refractory materials, with the mode of pressing the ceramic fiber cotton in the middle of two cylindrical refractory materialss of mutual belled.The conduction of trap heat effectively simultaneously has certain elasticity and compressibility again, thereby can satisfy the requirement of swell increment and regulated quantity.The radially 10-20mm that can reach, the regulated quantity of angle 3-6 degree.The junction of flame retardant coating, inner hot-air channel adopts staircase structural model, when hot blast is passed through at a high speed, forms eddy current in the flame retardant coating junction and reduces the blast of junction, the reinforced seal effect.In addition, because device all adopts double-deck box hat, filling fire resisting material in the middle of double-deck box hat, calorific loss is few, saves the energy, and the temperature of shell is low simultaneously, can change Working environment effectively, increases the service life.This device design science is reasonable, and dependable performance can satisfy the service requirements of large and medium-sized blast furnace, for the high wind-warm syndrome of blast furnace, high roof pressure, high strength smelting provide powerful guarantee.Especially be suitable for 1000 grades of-5000 grades of large blast furnaces.
Description of drawings
The utility model one-piece construction synoptic diagram during accompanying drawing 1.
Fig. 2 is a labyrinth type compensator structure synoptic diagram.
Fig. 3 saves structural representation in the stage casing.
Fig. 4 is the elbow structure synoptic diagram.
Below in conjunction with the drawings and the specific embodiments the utility model is further described.
Embodiment
Embodiment of the present utility model such as accompanying drawing 1, its integral body are maze-type structure, by save 6 in belly pipe 11, elbow 9, the stage casing, joint 8, upper and lower labyrinth type loop expansion pipe 3,7 and vision slit 12 etc. are formed down in the stage casing.The stainless steel plug end of belly pipe 11 is connected with tuyere small sleeve, flanged end is connected with the elbow flange, the joint square flange connects to form air intake passage under square flange 16 1 ends of elbow 9 and the stage casing, the stage casing upper flange of joint 8 down is connected with following loop expansion pipe 7, the upper flange of following loop expansion pipe 7 is connected with the lower flange of joint 6 in the stage casing, the upper flange that saves in the stage casing is connected with the lower flange 14 of last loop expansion pipe 3, and last loop expansion pipe 3 is connected with adapter.The ventilation duct of joint 6 connects in the ventilation duct of upper and lower labyrinth type loop expansion pipe 3,7 and the stage casing.
Referring to accompanying drawing 2, for reaching the goal of the invention of good sealing effect, with the corrugated tube and the double-layer stainless steel liner 17 of labyrinth type loop expansion pipe 3,7 are made two cavitys 2 up and down, constitute the twice thermofin at the two-layer refractory materials 1 of the inwall ramming of stainless steel lined 17, be filled with ceramic fiber cotton 10 in the cavity 2 and form the cotton layer formation of ceramic fiber twice thermofin, amount to four layers of thermofin, can reach best effect of heat insulation.Corrugated tube position temperature is guaranteed can improve the work-ing life of labyrinth type loop expansion pipe greatly between 50 °～100 °.Stainless steel lined 17 is connected with the flange that is positioned at its underpart.Four pull bars of upper and lower labyrinth type loop expansion pipe 3,7 usefulness are connected with body of heater.Adjust compensation rate with four pull bars, down, the lower nuts of four pull bars is all unclamped, and can realize adjusting automatically compensation rate, and does not influence sealing effectiveness in working order.
Referring to Fig. 1, Fig. 3, this device all adopts cotton pad of ceramic fiber and metallic gasket double-layer seal in the junction of flange, meet the standard of zero tolerance.The ceramic fiber that save simultaneously 6 in labyrinth type loop expansion pipe 3,7 and stage casing, adopts the junction of joint 8 under the stage casing is cotton to be filled up 4 and can be compressed to 20mm by 50mm.In the process of implementing compensation, be compressed into the cotton pad 4 of the thick ceramic fiber of 20mm and can spring back to 30～40mm (viewing compensation amount size and decision springback capacity) again, in labyrinth type loop expansion pipe 3,7 and stage casing, save 6, under the stage casing junction of joint 8, all adopt flange 14 to connect, fixing with gong bar bolt 15, and be provided with double-deck fire-resistant material heat insulation layer.The fire-resistant material heat insulation layer as shown is the notch cuttype structure, and this structure forms negative pressuren zone 13 in the part, to reach better sealing effectiveness according to fluid mechanics principle.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, the box hat 5 of this device has all been made bilayer structure, fills the new thermofin of the cotton formation of ceramic fiber between two-layer box hat 5, simultaneously at interior box hat wall ramming refractory masses 1, so just forms two thermofins.The arrow of Fig. 2, Fig. 3 is a hot-air channel.
As shown in Figure 1, another paths of elbow 9 is connected with vision slit 12, can observe working condition at any time under in working order.The position of vision slit 12 adopts double-deck thermal glass heat insulation, and stopcock control is safe and reliable, easy to operate.
Claims (4)
1, a kind of blast furnace air inlet device, comprise the belly pipe that connects as one, elbow and straight tube stage casing, housing, it is characterized in that, its integral body is maze-type structure, wherein go up to save in labyrinth type loop expansion pipe and the stage casing and be connected, the bottom of saving in the stage casing is connected with following labyrinth type loop expansion pipe, the bottom of following labyrinth type loop expansion pipe is saved down with the stage casing and is connected, save elbow under the stage casing and belly pipe connects to form air intake passage, on, following labyrinth type loop expansion pipe is provided with the double-layer stainless steel liner, the inwall of liner ramming respectively has the fire-resistant material heat insulation layer, is respectively equipped with thermofin between the liner, and the housing of device all is the double-layer stainless steel shell, be filled with thermofin between the double-deck box hat, the surperficial ramming of interior box hat has flame retardant coating to form the twice thermofin.
2, blast furnace air inlet device according to claim 1, it is characterized in that, the corrugated tube of labyrinth type loop expansion pipe and double-layer stainless steel liner form two cavitys, be filled with the cotton cotton layer of ceramic fiber of forming of ceramic fiber in the cavity and constitute the twice thermofin, stainless steel lined is connected with the flange that is positioned at its underpart.
3, blast furnace air inlet device according to claim 1 is characterized in that, described upper and lower labyrinth type loop expansion pipe connects with four pull bars.
4, blast furnace air inlet device according to claim 1, it is characterized in that the junction that joint, stage casing are saved down in described labyrinth type loop expansion pipe and the stage casing all adopts flange to connect, and being provided with double-deck fire-resistant material heat insulation layer, the fire-resistant material heat insulation layer is a step-off construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520023983 CN2745934Y (en) | 2005-04-29 | 2005-04-29 | Blast furnace air intake device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520023983 CN2745934Y (en) | 2005-04-29 | 2005-04-29 | Blast furnace air intake device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2745934Y true CN2745934Y (en) | 2005-12-14 |
Family
ID=35582517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520023983 Expired - Lifetime CN2745934Y (en) | 2005-04-29 | 2005-04-29 | Blast furnace air intake device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2745934Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404696C (en) * | 2006-07-04 | 2008-07-23 | 世林（漯河）冶金设备有限公司 | Corrugated expansion joint of blast furnace air inlet device |
| CN104073580A (en) * | 2014-07-10 | 2014-10-01 | 山西太钢不锈钢股份有限公司 | Blast furnace belly pipe/tuyere small sleeve contact site air-leakage on-line adjustment method |
| CN105506208A (en) * | 2016-02-02 | 2016-04-20 | 唐山金山腾宇科技有限公司 | Energy-saving environment-friendly air supply branch pipe |
| CN107130074A (en) * | 2017-05-25 | 2017-09-05 | 唐山金山腾宇科技有限公司 | Energy saving and environment friendly labyrinth type air-supply arrangement |
-
2005
- 2005-04-29 CN CN 200520023983 patent/CN2745934Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404696C (en) * | 2006-07-04 | 2008-07-23 | 世林（漯河）冶金设备有限公司 | Corrugated expansion joint of blast furnace air inlet device |
| CN104073580A (en) * | 2014-07-10 | 2014-10-01 | 山西太钢不锈钢股份有限公司 | Blast furnace belly pipe/tuyere small sleeve contact site air-leakage on-line adjustment method |
| CN104073580B (en) * | 2014-07-10 | 2015-11-25 | 山西太钢不锈钢股份有限公司 | Straight blowing pipe of blast furnace and tuyere small sleeve contact site run wind on-line tuning method |
| CN105506208A (en) * | 2016-02-02 | 2016-04-20 | 唐山金山腾宇科技有限公司 | Energy-saving environment-friendly air supply branch pipe |
| CN107130074A (en) * | 2017-05-25 | 2017-09-05 | 唐山金山腾宇科技有限公司 | Energy saving and environment friendly labyrinth type air-supply arrangement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TANGSHAN JINSHAN METALLURGY EQUIPMENT CO., LTD. A Free format text: FORMER OWNER: TIAN JIANQUAN ADDRESS Effective date: 20081121 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081121 Address after: Hebei province Tangshan City Kaiping district tax village south, zip code: 063000 Patentee after: Tangshan Jinshan Metallurgical Equipment Co., Ltd. Address before: No. 21 West Xi Road, North District, Tangshan City Road, Hebei Province, 063000 Patentee before: Tian Jianquan |
|
| ASS | Succession or assignment of patent right |
Owner name: TANGSHAN JINSHAN METALLURGY EQUIPMENT CO., LTD. Free format text: FORMER OWNER: TIAN JIANQUAN Effective date: 20081121 |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150429 Granted publication date: 20051214 |