CN2804114Y - Inlet device of blast furnace - Google Patents
Inlet device of blast furnace Download PDFInfo
- Publication number
- CN2804114Y CN2804114Y CN 200520113484 CN200520113484U CN2804114Y CN 2804114 Y CN2804114 Y CN 2804114Y CN 200520113484 CN200520113484 CN 200520113484 CN 200520113484 U CN200520113484 U CN 200520113484U CN 2804114 Y CN2804114 Y CN 2804114Y
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- Prior art keywords
- pipe
- air inlet
- inlet device
- blast furnace
- sphere
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- Expired - Lifetime
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Abstract
The utility model relates to an air ingress device of a blastfurnace, which comprises a horn pipe of a hot wind bustle pipe, a gooseneck, a connecting pipe, a bent pipe, a directly blowing pipe, a peephole, a hanging and tensioning device and a fireproof lining. The whole pipe piece is lined with a refractory lining which is made of a mesoblasm high-aluminum casting material. The containing weight of the mesoblasm high-aluminum casting material is 1.3-1.5t/m< 3 >, and the thermal coefficient of the mesoblasm high-aluminum casting material is not more than 0.35W/m. k (350+/-25 DEG C). The ratio of the weight portion containing the Al2O3 is more than 55%. The connecting point between the connecting pipe and the bent pipe and/or the connecting point between the bent pipe and the directly blowing pipe are in spherical connection or flanged connection. The refractory lining at the point of the spherical connection is also in the spherical connection. Soft sealing rings are respectively arranged between the surfaces of the spherical connection. The soft sealing rings are arranged in seal grooves on a concave spherical surfaces or convex spherical surfaces of spherical connecting surfaces. The utility model effectively improves the heat insulating performance of the air ingress device and prevents the air leakage and the red heat at the connecting point of the pipe piece. The utility model can be used for an ironmaking blastfurnace, a phosphorus making blastfurnace, a calcium magnesia phosphate fertilizer making blastfurnace and a blast furnace for smelting non-ferrous metal.
Description
Technical field
The utility model relates to a kind of blast furnace air inlet device, the air inlet device of matter high alumina castable refractory lining in particularly all having in a kind of pipe fitting of whole air inlet device.
Background technology
Blast furnace air inlet device is arranged on the web member between blast-furnace hot-air surrounding pipes and the blast-furnace tuyere, after bustle pipe is delivered in high pressure, the elevated temperature heat air blast of sending from hotblast stove, pressing the set air port number of blast furnace distributes, deliver to each air port of blast furnace through air inlet device, according to varying in size of blast furnace heat size, the set air port air inlet device of every blast furnace can be by 4 to 40-50, but each air inlet device of same seat blast furnace is the same substantially.Each air inlet device all will stand the effect of high temperature, hot high pressure air blast.Traditional blast furnace air inlet device as shown in Figure 1, hot blast is delivered to blast-furnace tuyere from bustle pipe through oviduct 1, swan neck 4, pipe connecting 3, bend pipe 5, belly pipe 8, blasts blast furnace hearth.All be lined with refractory materials in these air intake pipe fittings, mobile hot blast flow velocity will reach more than the 50-80m/s in the pipe fitting, and used refractory materials is not only high temperature resistant, and wants anti-washing away.Be between pipe connecting and bend pipe, bend pipe and the belly pipe that the metal sphere is connected and sphere seals firmly, the joint face place does not have refractory lining.This is when changing the air port, unloads belly pipe well, two spheres joint and for example simultaneously, the thermal expansion distortion after can absorbing air inlet device on a small quantity and being heated and regulate the deviation of belly pipe length in a small amount.Along with the development of blast furnace smelting technology, pressure of blast and wind-warm syndrome improve gradually, and leaking out seriously in these two pairs of sphere junctions, causes the sphere burning after leaking out again, the burning volumetric expansion, and it is more serious to leak out, and produces vicious cycle.Spilling of high temperature blast makes the rising of metalwork temperature, red heat, even burns, and for production safety, blast furnace have to reduce wind-warm syndrome, or the cooling of blowing a cold wind over, spray water, and has more increased power loss, has also reduced the life-span of air inlet device.
Luxembourg PW company has designed a kind of bend pipe and has been flange with pipe connecting, belly pipe and is connected, and the air inlet device that is provided with expansion joint 2 on pipe connecting as shown in Figure 2, this device in newly-built, adopt on the large blast furnace, has solved air inlet device well and has leaked out and the red heat problem.But this air inlet device links together bend pipe 5 and belly pipe 8 usefulness flanges, when changing the air port, needs bend pipe 5 and belly pipe 8 are unloaded together, and weight is big, and the special-purpose air port machine that changes generally need be set, and just can be convenient for changing the air port.To change air port dismounting belly pipe inconvenience in order overcoming, to have occurred air port air inlet device that conventional apparatus combines with PW company air inlet device again as shown in Figure 3, still adopt the metal sphere to be connected between this device belly pipe and the bend pipe.More than two kinds of structural shapes all need distance between bustle pipe and the air port medullary ray is strengthened, the gap is strengthened between bustle pipe and the last furnace shell, just the bustle pipe central diameter need corresponding increasing.This will adopt these two kinds of structures to be restricted for old blast furnace reformation or the narrower and small blast furnace of tuyere platform.Structural shape shown in Figure 3 in addition adopts built-up welding or spraying plating fire-resistant oxidation resistant alloy technology though connect sphere at metal, but prolong the sphere life-span, but fail to solve to leak out and the red heat problem at all.
The refractory lining of the air inlet device of above three kinds of structural shapes is the heavy mould material at present, and its unit weight is general all at 2.5t/m
3More than, thermal conductivity＞2.5W/mk has not only increased the weight of each parts of air inlet device, and parts surface temperature height, and thermosteresis is big, causes the thermal pollution of tuyere platform, makes troubles for the Operation and Maintenance personnel.
The utility model content
For overcoming the defective of prior art, the utility model provides a kind of air inlet device of blast-furnace tuyere, has effectively improved the heat-insulating property of air inlet device, and prevents that the junction from leaking out, the problem of red heat.
To achieve these goals, the utility model is achieved by the following technical solution:
A kind of blast furnace air inlet device that the utility model provides comprises bustle pipe oviduct, swan neck, pipe connecting, bend pipe, belly pipe, peep hole, hangs and take-up device, refractory lining, matter high alumina castable refractory lining in all being lined with in the particularly whole pipe fitting.
The unit weight of matter high alumina castable is 1.3-1.5t/m in described
3, thermal conductivity≤0.35W/mk (350 ± 25 ℃) contains Al
2O
3Weight part ratio be more than 55%.
Described pipe connecting is that sphere is connected or flange connects with the junction and/or the bend pipe of bend pipe with the junction of belly pipe.
The refractory lining of described sphere junction also connects for sphere.
Be respectively equipped with the soft seal circle between described sphere joint face.
Described soft seal circle is arranged in the concave spherical surface or the sealing groove on the protruding sphere of sphere joint face.
The beneficial effects of the utility model are:
1, improves the heat-insulating property of air inlet device pipe fitting, reduced thermosteresis, improved the wind-warm syndrome of blast furnace, reduced thermal pollution, improved the operational condition of blast-furnace tuyere platform environment.By all being lined with refractory lining in the whole pipe fitting, and matter refractory lining during original heavy refractory lining changed into, improved the heat-insulating property of air inlet device pipe fitting effectively.
2, overcome that leak out seriously in air inlet device sphere junction, the red heat problem, not only saved the energy but also prolonged work-ing life of air inlet device, convenient especially for the transformation of existing old blast furnace air inlet device especially, effect is obvious.Owing to also added refractory lining, and added fire-resistant sealing-ring, overcome effectively that leak out in the junction, the problem of red heat in the sphere junction in the junction of air inlet device pipe fitting.
3, air inlet device pipe fitting junction adopts sphere to connect, and when changing the air port, dismounting, that belly pipe is installed is simple and easy, convenient.
4, can transform together by all air port air inlet devices for the transformation of existing old blast furnace air inlet device, also can when the blast furnace ordinary production is changed the air port, change transformation one by one, flexible.
5, have wide range of applications.The present invention not only can use on iron-smelting blast furnace, also can be used for refining the blast furnace of phosphorus blast furnace, fused(calcium magnesium)phosphate blast furnace and non-ferrous metal metallurgy.
Description of drawings
Fig. 1 is traditional blast furnace air inlet device structural representation;
Fig. 2 is existing a kind of blast furnace air inlet device structural representation;
Fig. 3 is existing another kind of blast furnace air inlet device structural representation;
Fig. 4 is the structural representation of a kind of scheme of the utility model;
Fig. 5 is the structural representation of the another kind of scheme of the utility model.
The accompanying drawing sign
1, oviduct 2, expansion joint 3, pipe connecting 4, swan neck
5, bend pipe 6, peep hole device 7, refractory lining
8, belly pipe 9, erecting by overhang 10, take-up device 11, sealing-ring
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in detail.
A kind of blast furnace air inlet device, comprise bustle pipe oviduct, swan neck, pipe connecting, bend pipe, belly pipe, peep hole device, hang and take-up device, refractory lining, bend pipe is that sphere is connected with the joint face of belly pipe, matter high alumina castable refractory lining in all being lined with in the particularly whole pipe fitting.The unit weight of matter high alumina castable is 1.3-1.5t/m in described
3, thermal conductivity≤0.35W/mk (350+25 ℃) contains Al
2O
3Weight part ratio be more than 55%.Described pipe connecting is that sphere is connected or flange connects with the junction and/or the bend pipe of bend pipe with the junction of belly pipe.The refractory lining of described sphere junction also connects for sphere.Be respectively equipped with the soft seal circle between described sphere joint face.And the protrusion direction of the protruding sphere of above-mentioned sphere junction flows to identical or opposite with air blast.The soft seal circle can be located in the protruding sphere or the seal groove on the concave spherical surface of sphere joint face.
As shown in Figure 4, a kind of technical scheme that the utility model provides, comprise bustle pipe oviduct 1, swan neck 4, pipe connecting 3, bend pipe 5, belly pipe 8, peep hole device 6, erecting by overhang 9 and take-up device 10, refractory lining 7, the pipe fitting inside that at first is air inlet device is provided with refractory lining 7 entirely, refractory lining is middle matter mould material, and its unit weight is 1.3-1.5t/m
3, thermal conductivity≤0.35W/mk (350 ± 25 ℃) contains Al
2O
3Weight part ratio be more than 55%, not only fire-resistant but also insulation has reduced the surface temperature of metalwork, has reduced the thermosteresis of whole air inlet device, has also alleviated weight of equipment, has improved stokehold production operation and serviceman's working conditions.This structural shape all can adopt to the air inlet device of prior art shown in Figure 3 at Fig. 1.Second, air inlet device in this example, be connected for sphere between bend pipe 5 and the belly pipe 8, the protrusion direction of the protruding sphere in sphere junction flows to identical with air blast, the junction of above-mentioned pipe fitting is provided with refractory lining, and the joint face of refractory lining also connects for sphere, the sphere joint face is provided with soft seal circle 11, be located at ball-joint of metal tube together and go up (being on the sphere joint face between bend pipe and the belly pipe), be located at together on ball-joint of refractory lining, twice are the soft seal circle, and twice soft seal circle all is located in the seal groove on the concave spherical surface of sphere junction.Just select different fire-resistant soft seal circles according to pressure, the temperature of air intake.Adopt soft seal, can realize, and the sphere connection still can realize the regulating effect in " joint " near zero leakage.This structural shape is particularly useful for the transformation of blast furnace air inlet device shown in Figure 3, leaks out and the red heat problem to solve air inlet device.
Fig. 5 is an another kind of technical scheme of the present utility model, be one by 315m
3Dilatation is to 400m
3Blast furnace air inlet device, wind pushing temperature has reached 1150 ℃, pressure of air supply is 0.25-0.3MPa, matter mould material refractory lining 7 in the pipe fitting of whole air inlet device, using, pipe connecting 3 is sphere with bend pipe 5 with the joint face of belly pipe 8 with 5 bend pipes and is connected, and the joint face of corresponding refractory lining 7 also connects for sphere.It is identical that the protrusion direction of the above-mentioned two place protruding sphere in sphere junction and air blast flow to, and pipe fitting junction and refractory lining two place's sphere joint faces are equipped with the soft seal circle simultaneously.The soft seal circle is located in the seal groove on the concave spherical surface that sphere connects.Adopt said structure, the refractory lining weight ratio had originally reduced by 45%, and the air inlet device surface temperature is 250-350 ℃, has reduced the air inlet device surface temperature effectively.This structural shape is particularly useful for the transformation of old blast furnace air inlet device, leaks out and the red heat problem to solve air inlet device.
The present invention not only can use on iron-smelting blast furnace, also can be used for refining the blast furnace of phosphorus blast furnace, fused(calcium magnesium)phosphate blast furnace and non-ferrous metal metallurgy.
Claims (6)
1, a kind of blast furnace air inlet device comprises bustle pipe oviduct, swan neck, pipe connecting, bend pipe, belly pipe, peep hole, hangs and take-up device, refractory lining, it is characterized in that matter high alumina castable refractory lining in all being lined with in the whole pipe fitting.
2, blast furnace air inlet device according to claim 1 is characterized in that, the unit weight of described middle matter high alumina castable is 1.3-1.5t/m
3, thermal conductivity≤0.35W/mk (350 ± 25 ℃) contains Al
2O
3Weight part ratio be more than 55%.
3, blast furnace air inlet device according to claim 1 is characterized in that, described pipe connecting is that sphere is connected or flange connects with the junction and/or the bend pipe of bend pipe with the junction of belly pipe.
4, blast furnace air inlet device according to claim 3 is characterized in that, the refractory lining of described sphere junction also connects for sphere.
5, blast furnace air inlet device according to claim 4 is characterized in that, is respectively equipped with the soft seal circle between described sphere joint face.
6, blast furnace air inlet device according to claim 5 is characterized in that, described soft seal circle is arranged in the concave spherical surface or the sealing groove on the protruding sphere of sphere joint face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520113484 CN2804114Y (en) | 2005-07-07 | 2005-07-07 | Inlet device of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520113484 CN2804114Y (en) | 2005-07-07 | 2005-07-07 | Inlet device of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2804114Y true CN2804114Y (en) | 2006-08-09 |
Family
ID=36909410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520113484 Expired - Lifetime CN2804114Y (en) | 2005-07-07 | 2005-07-07 | Inlet device of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2804114Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206721A (en) * | 2011-07-08 | 2011-10-05 | 中国十九冶集团有限公司 | Method for mounting blast-furnace tuyere device |
| CN103924018A (en) * | 2014-04-18 | 2014-07-16 | 攀钢集团成都钢钒有限公司 | Method for changing tuyere medium sleeve |
| CN106222344A (en) * | 2016-09-30 | 2016-12-14 | 武汉钢铁股份有限公司 | A kind of method for dismounting of blast-furnace tuyere two set |
-
2005
- 2005-07-07 CN CN 200520113484 patent/CN2804114Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102206721A (en) * | 2011-07-08 | 2011-10-05 | 中国十九冶集团有限公司 | Method for mounting blast-furnace tuyere device |
| CN102206721B (en) * | 2011-07-08 | 2012-10-17 | 中国十九冶集团有限公司 | Method for mounting blast-furnace tuyere device |
| CN103924018A (en) * | 2014-04-18 | 2014-07-16 | 攀钢集团成都钢钒有限公司 | Method for changing tuyere medium sleeve |
| CN103924018B (en) * | 2014-04-18 | 2015-10-21 | 攀钢集团成都钢钒有限公司 | Change the method for tuyere medium sleeve |
| CN106222344A (en) * | 2016-09-30 | 2016-12-14 | 武汉钢铁股份有限公司 | A kind of method for dismounting of blast-furnace tuyere two set |
| CN106222344B (en) * | 2016-09-30 | 2018-05-01 | 武汉钢铁有限公司 | A kind of method for dismounting of two sets of blast-furnace tuyere |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Effective date of registration: 20071219 Pledge (preservation): Pledge |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Mingcheng Environmental Protection Technology Co.,Ltd. Assignor: Beijing Mingcheng Technology Development Co., Ltd. Contract record no.: 2010990000406 Denomination of utility model: High heat preservation easily replaceable blast furnace air intake apparatus Granted publication date: 20060809 License type: Exclusive License Record date: 20100622 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20100712 Granted publication date: 20060809 Pledgee: Zhongguancun Beijing science and technology Company limited by guarantee Pledgor: Beijing Mingcheng Technology Development Co., Ltd. Registration number: 2007110000411 |
|
| CX01 | Expiry of patent term |
Expiration termination date: 20150707 Granted publication date: 20060809 |
|
| EXPY | Termination of patent right or utility model |