CN203904381U - Triangular flexible large pull rod device of hot air pipeline - Google Patents
Triangular flexible large pull rod device of hot air pipeline Download PDFInfo
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- CN203904381U CN203904381U CN201420272791.9U CN201420272791U CN203904381U CN 203904381 U CN203904381 U CN 203904381U CN 201420272791 U CN201420272791 U CN 201420272791U CN 203904381 U CN203904381 U CN 203904381U
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Abstract
The utility model discloses a triangular flexible large pull rod device of a hot air pipeline, and belongs to the technical field of blast furnace top combustion stoves. The triangular flexible large pull rod device comprises a hot air main pipe, a hot air pipe branch, a hot air pipe branch compensator, a hot air valve and a hot air furnace casing, wherein a hot air furnace casing reinforcing ring is arranged on the hot air furnace casing 5; a hot air pipeline upper large pull rod support is arranged at a three-way position of the joint of the hot air pipe branch and the hot air main pipe, two groups of flexible large pull rods distributed in a triangular manner are utilized to connect the hot air furnace casing reinforcing ring and the flexible large pull rod support into a whole in a welding or bolting manner. A connecting board can be arranged to facilitate connection. The triangular flexible large pull rod device of the hot air pipeline has the advantages that the rising of the hot air furnace casing can be effectively absorbed, the stress of a pipe casing and the furnace casing can be reduced, the safety of the hot air furnace and the pipeline is improved, and the device is particularly suitable for a top combustion stove higher in hot air outlet and larger in rising amount of the furnace casing.
Description
Technical field
The utility model belongs to blast furnace top combustion stove technical field, particularly provide a kind of hot air duct trilateral flexible large pull rod device, overcome pipeline blind plate power, can also absorb the pull bar of hot-air stove shell thermal expansion simultaneously, be applicable to the hot blast manifold of hotblast stove in iron-smelting process, be used for connecting hotblast stove and pipeline.
Background technology
In the developing history of blast furnace technology, the successful Application of hotblast stove has special status undoubtedly.Blast furnace uses hot-air smelting for having played vital role in the limited metallurgical coke of saving reserves, reduction energy consumption, raising furnace processor, reduction steel cost aspect; Also the utilization ratio, the minimizing CO2 discharge that have improved the energy, have important and active influence to environment protection simultaneously.Therefore the temperature, the pressure that constantly improve hot blast are the main directions of blast funnace hot blast stove technical progress.Along with technical progress, hot blast temperature develops into the level of the highest 1300 DEG C by initial 149 DEG C, and in hotblast stove stove, top temperature has reached 1450 DEG C, the highest 0.5MPa of furnace pressure.How the hot blast of conveying enormous amount, ultra high temp and the pressure of safety, is an important step of hotblast stove technology.If do not handle the problem of hot air duct well, easily there is in process of production pipe overheat, burn the red even serious accident of blast, cause the tragedy of great loss of life and personal injury.A reason that occurs above accident is exactly that hot air duct pull bar design is unreasonable, can not effectively solve the impact that expanded by heating, blind plate power bring, thereby causes fatigue of steel structures distortion, have an accident.
Large pull bar on hot blast manifold is the important step of hot air duct design always, and the floor plan of the large pull bar common form of hot blast manifold in the past as shown in Figure 1, Figure 2.
In figure: the 1st, hot-blast main, the 2nd, hot blast manifold, the 3rd, hot blast manifold FlexbleJoint, the 4th, hot blast valve, the 5th, hot-air stove shell, the 6th, the drag link bearing on hot-blast main, the 7th, pull bar is connected with bearing, and the 8th, the large pull bar of hot blast manifold, the 9th, length adjustment nut, the 10th, pull bar is connected with hotblast stove bearing, and the 11st, hotblast stove upper connecting rod bearing.When hotblast stove is normally worked, box hat temperature is 80～150 DEG C, and the expansion that now hot blast manifold produces is absorbed by FlexbleJoint 3, and the blind plate power that air blast produces is born by 6,7,8,9,10,11 combination units that form.In order to absorb the expansion of hot-air stove shell at vertical direction, 7,10 places that are connected with bearing at pull bar can be arranged to bearing pin or chain connection.Although such form has solved the problem of steel construction expansion and blind plate power, but because blind plate power is very large, cause hot-blast outlet stress concentration, likely cause the weld cracking between bearing 11 and hot-air stove shell 5, thereby one-piece construction was lost efficacy, huge blind plate power can also cause the box hat distortion of hot-air stove shell 5, hot blast manifold 2 in addition, thereby been provided with internal refractories supporting structure is destroyed, and furnace shell is burnt red accident of even burning by furnace high-temperature.
Along with applying of top combustion stove technology, it is higher that the position of hot blast manifold 2 becomes, after expanded by heating, ascending amount is larger, and along with blast furnace blast improves, pipeline blind plate power is also higher, the stressed and expansion issues of the solution hot blast manifold 2 that traditional hot blast manifold pull bar 8 forms can not be safe.Domestic many top combustion stoves break down in the problem of hot blast manifold 2, hot-air stove shell 5 and the junction of hot blast manifold 2, deal with very difficultly in the situation that blast furnace is produced, and some hotblast stoves can only be produced in spite of illness, abnormally dangerous.
Summary of the invention
The purpose of this utility model is to provide a kind of hot air duct trilateral flexible large pull rod device; can effectively solve top combustion stove furnace shell 5, the hot blast manifold 2 steel construction later expansion issues of being heated; ensure steel construction simultaneously; especially can there is not excessive deformation with junction and the hot blast manifold 2 of hot blast manifold 2 with hot-blast main 1 junctions in hot-air stove shell 5 under the effect that is subject to blind plate power; with the stability of protection masonry construction, improve the security of hotblast stove in the time of production operation.
The utility model comprises: hot-blast main 1, hot blast manifold 2, hot blast manifold loop expansion pipe 3, hot blast valve 4, hot-air stove shell 5, hot air duct upper connecting rod bearing 12, flexible large pull bar 13, web plate 14, hot-air stove shell strengthening ring 15.
The utility model utilizes trilateral stability principle, hot-air stove shell strengthening ring 15 is set on hot-air stove shell 5, the position, junctions being connected with hot-blast main 1 at hot blast manifold 2 arranges large drag link bearing 12 on hot air duct, then utilize two groups of large pull bars 13 of the flexibility being triangularly arranged that hot-air stove shell strengthening ring 15 and flexible large drag link bearing 12 are linked into an integrated entity, mode of connection adopts welding or bolt to connect.For convenience of connecting, web plate 14 can be set.
The pipeline junctions that hot blast manifold 2 is connected with hot-blast main 1 is the starting point of the flexible large pull rod device of triangle, from this starting point, flexible large pull bar 13 is arranged along tangent line or the intersection direction of hot-air stove shell 5, flexible large pull bar 13 is 45 °～120 ° with the radius angle of hot-air stove shell 5, and flexible large pull bar 13 is two other terminals of the flexible large pull rod device of triangle with the tie point of hot-air stove shell strengthening ring 15.
The cross-sectional shape of flexible large pull bar 13 can be the shaped steel of H shaped steel, angle steel, round steel, T-steel or square-section; The arrangement form of flexible large pull bar 13 has directivity, is stressed strong side in the horizontal direction, and vertical direction is stressed weak side.
The cross-sectional shape of hot-air stove shell strengthening ring 15 can be the shaped steel of H shaped steel, angle steel, T-steel or square-section, hot-air stove shell strengthening ring 15 can be arranged to the circular arc of 360 ° of full circle or 1 °-359 °, and flexible large pull bar 13 is connected with hot-air stove shell strengthening ring 15.
The hot-air stove shell strengthening ring 15 arranging on hot-air stove shell 5 can effectively improve the rigidity of hot-air stove shell 5, is conducive to the stable of hot blast manifold 2 and hot-air stove shell 5 connecting portions.
Two groups of flexible large pull bars 13 are triangularly arranged, and the point of application of pulling force are dispersed on hot-air stove shell strengthening ring 15, and the perforate position being connected with hot blast manifold 2 away from hot-air stove shell 5, thereby have reduced the problem of stress concentration of position, aperture steel construction.Flexible large pull bar 13 need to have enough resistance to tensions, can bear the tensile stress that blind plate power produces; Simultaneously flexible large pull bar 13 also will have certain flexibility, can bear the hot-air stove shell 5 vertical directions shear-stress that goes up and produce that is heated, and too large deflection deformation can not occur under installment state.
Flexible large pull bar 13 will be considered directivity in the time arranging, should be in the horizontal direction the stressed strong side of flexible large pull bar 13, at the vertical expansion direction of hot-air stove shell 5, should be stressed weak side, as the example explanation of Fig. 6.
In sum, the utility model provides a kind of top combustion stove furnace shell 5 that solves to be heated and to go up and the method for hot blast manifold 2 blind plate power, utilizes strengthening ring 15 and the large pull bar 13 of flexibility that is triangularly arranged is achieved as follows function:
1, strengthening ring effectively raises the rigidity of hot-air stove shell 5, improves hot-air stove shell 5 force structures at pipeline tapping position.
2, the large pull bar 13 being triangularly arranged, has been distributed to the stress action spot of hot-air stove shell 5 on strengthening ring 15, and away from pipeline tapping position, has reduced hot-air stove shell 5 internal stresss.
3, the large pull bar 13 of trilateral and strengthening ring 15 are tangent or crossing relations, and when tangent, trilateral pull bar 13 is 90 ° with hot-air stove shell 5 radius angles; While intersecting, trilateral pull bar and hotblast stove radius angle are 45 °～120 °.
4, large pull bar 13 need to have certain flexibility, considers to bear tensile stress that blind plate power produces and hot-air stove shell 5 shear-stress causing that goes up simultaneously.
The disadvantageous effect of bringing by originally can effectively solving top combustion stove furnace shell 5, hot blast manifold 2 expanded by heating and blind plate power.
Brief description of the drawings
Fig. 1 is a kind of plot plan of the large pull bar of traditional hot blast manifold.
Fig. 2 is the another kind of plot plan of the large pull bar of traditional hot blast manifold.
In figure, the draw-bar seat 6 on hot-blast main 1, hot blast manifold 2, hot blast manifold FlexbleJoint 3, hot blast valve 4, hot-air stove shell 5, pipeline, pull bar are connected 7 with bearing, the large pull bar 8 of hot blast manifold, length adjustment nut 9, pull bar are connected 10 with hotblast stove bearing, hotblast stove upper connecting rod bearing 11.
Fig. 3 is the plot plan of trilateral flexible draw bar embodiment 1 of the present utility model.
Fig. 4 is the plot plan that trilateral flexible draw bar of the present utility model is executed example 2.
Fig. 5 is the plot plan that trilateral flexible draw bar of the present utility model is executed example 3.
In figure, hot-blast main 1, hot blast manifold 2, hot blast manifold FlexbleJoint 3, hot blast valve 4, hot-air stove shell 5, hot air duct upper connecting rod bearing 12, flexible large pull bar 13, web plate 14, hot-air stove shell strengthening ring 15.
Fig. 6 is the example explanation of the large pull bar stressed strong side of 13 cross section and stressed weak side, and cross section slice location is shown in A-A slice location in Fig. 3.
Embodiment
Embodiment 1:
Fig. 3 is embodiment of the present utility model.
As shown in Figure 3, the present invention includes: hot-blast main 1, hot blast manifold 2, hot blast manifold loop expansion pipe 3, hot blast valve 4, hot-air stove shell 5, hot air duct upper connecting rod bearing 12, flexible large pull bar 13,, web plate 14, hot-air stove shell strengthening ring 15.
The junctions being connected with hot blast manifold 2 hot-blast main 1 arranges large drag link bearing 12.Strengthening ring 15 is set on hot-air stove shell 5, is connected to for convenience web plate 14 is set on strengthening ring 15.Drag link bearing 12 and web plate 14 are coupled together with the large pull bar 13 of flexibility, strengthening ring 15 is 360 ° of complete annulus.Thereby can form an overall pull bar combination unit, ensure safety and stability when hot blast manifold is produced.
Embodiment 2:
Fig. 4 is another kind of embodiment of the present utility model.
As shown in Figure 4, present embodiment comprises: hot-blast main 1, hot blast manifold 2, hot blast manifold loop expansion pipe 3, hot blast valve 4, hot-air stove shell 5, hot air duct upper connecting rod bearing 12, flexible large pull bar 13, web plate, 14, hot-air stove shell strengthening ring 15.
In this embodiment, method and Fig. 3 are similar, difference with border deployment scenarios very factually, two groups of corresponding drag link bearings 12 of large pull bar are merged into a set of.
The junctions being connected with hot blast manifold 2 hot-blast main 1 arranges large drag link bearing 12.Strengthening ring 15 is set on hot-air stove shell, is connected to for convenience web plate 14 is set on strengthening ring 15.Drag link bearing 12 and web plate 14 are coupled together with the large pull bar 13 of flexibility.Thereby can form an overall pull bar combination unit, ensure safety and stability when hot blast manifold is produced.
Embodiment 3:
Fig. 5 is another kind of embodiment of the present utility model.
As shown in Figure 5, present embodiment comprises: hot-blast main 1, hot blast manifold 2, and hot blast manifold loop expansion pipe 3, hot blast valve 4, hot-air stove shell 5, hot air duct upper connecting rod bearing 12, flexible large pull bar 13,, web plate, 14, hot-air stove shell strengthening ring 15.
Newly-built or improvement projects for some, hotblast stove height is restricted, and strengthening ring 15 cannot be made 360 ° of complete rings, can disconnect at hot-blast outlet place.
The present embodiment is similar to Example 1, and difference is that hot-air stove shell strengthening ring 15 is not 360 ° of domains, but disconnects at hot-blast outlet place.
The junctions being connected with hot blast manifold 2 hot-blast main 1 arranges large drag link bearing 12.Strengthening ring 15 is set on hot-air stove shell, is connected to for convenience web plate 14 is set on strengthening ring 15.Drag link bearing 12 and web plate 14 are coupled together with the large pull bar 13 of flexibility.Thereby can form an overall pull bar combination unit, ensure safety and stability when hot blast manifold is produced.
The utility model belongs to blast furnace top combustion stove field, a kind of method that solves top combustion stove steel construction expanded by heating and hot blast manifold 2 blind plate power is provided, be suitable for solving top combustion stove furnace shell 5, the hot blast manifold 2 steel construction later expansion issues of being heated, improve the security of hotblast stove in the time of production operation.
The hot air duct flexible draw bar of the utility model triangular arrangement, has multiple embodiments, the accompanying drawing explanation use that only lays down a definition, not limitation of the present invention.Anyly do not depart from mentality of designing of the present invention, the present invention is done to unsubstantiality changes, all still belong to scope of the present utility model.
Claims (4)
1. the flexible large pull rod device of hot air duct trilateral, comprising: hot-blast main, hot blast manifold, hot blast manifold loop expansion pipe, hot blast valve, hot-air stove shell; It is characterized in that: hot-air stove shell strengthening ring (15) is set on hot-air stove shell (5), the position, junctions being connected with hot-blast main (1) at hot blast manifold (2) arranges large drag link bearing (12) on hot air duct, then utilize two groups of large pull bars of the flexibility being triangularly arranged (13) that hot-air stove shell strengthening ring (15) and flexible large drag link bearing (12) are linked into an integrated entity, mode of connection adopts welding or bolt to connect;
The pipeline junctions that hot blast manifold (2) is connected with hot-blast main (1) is the starting point of the flexible large pull rod device of triangle, from this starting point, flexible large pull bar (13) is arranged along tangent line or the intersection direction of hot-air stove shell (5), flexible large pull bar (13) is 45 °～120 ° with the radius angle of hot-air stove shell (5), and flexible large pull bar (13) is two other terminal of the flexible large pull rod device of triangle with the tie point of hot-air stove shell strengthening ring (15).
2. device according to claim 1, is characterized in that, the cross-sectional shape of flexible large pull bar (13) is the shaped steel of H shaped steel, angle steel, round steel, T-steel or square-section.
3. device according to claim 1, is characterized in that, totally two groups of the flexible large pull rod device of triangle lay respectively at the upper and lower part of hot blast manifold (2).
4. install according to claim 1, it is characterized in that, the cross-sectional shape of hot-air stove shell strengthening ring (15) is to be the shaped steel of H shaped steel, angle steel, T-steel or square-section, and hot-air stove shell strengthening ring (15) is arranged to the circular arc of 360 ° of full circle or 1 °-359 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272791.9U CN203904381U (en) | 2014-05-24 | 2014-05-24 | Triangular flexible large pull rod device of hot air pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420272791.9U CN203904381U (en) | 2014-05-24 | 2014-05-24 | Triangular flexible large pull rod device of hot air pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN203904381U true CN203904381U (en) | 2014-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420272791.9U Withdrawn - After Issue CN203904381U (en) | 2014-05-24 | 2014-05-24 | Triangular flexible large pull rod device of hot air pipeline |
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| CN (1) | CN203904381U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103966378A (en) * | 2014-05-24 | 2014-08-06 | 北京首钢国际工程技术有限公司 | Triangular flexible large pull rod device with hot air pipelines |
| CN106676218A (en) * | 2016-08-24 | 2017-05-17 | 安徽马钢重型机械制造有限公司 | Hot air pipeline displacement control system of blast furnace single-row hot blast stove |
-
2014
- 2014-05-24 CN CN201420272791.9U patent/CN203904381U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103966378A (en) * | 2014-05-24 | 2014-08-06 | 北京首钢国际工程技术有限公司 | Triangular flexible large pull rod device with hot air pipelines |
| CN103966378B (en) * | 2014-05-24 | 2015-12-30 | 北京首钢国际工程技术有限公司 | The flexible large pull rod device of hot air duct trilateral |
| CN106676218A (en) * | 2016-08-24 | 2017-05-17 | 安徽马钢重型机械制造有限公司 | Hot air pipeline displacement control system of blast furnace single-row hot blast stove |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141029 Effective date of abandoning: 20151230 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |