CN102851482B - End heat-insulating structure of suspension muffle tube - Google Patents
End heat-insulating structure of suspension muffle tube Download PDFInfo
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- CN102851482B CN102851482B CN201210343171.5A CN201210343171A CN102851482B CN 102851482 B CN102851482 B CN 102851482B CN 201210343171 A CN201210343171 A CN 201210343171A CN 102851482 B CN102851482 B CN 102851482B
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- chock plug
- muffle tube
- refractory fibre
- mounting plate
- band steel
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Abstract
The invention relates to an end heat-insulating structure of a suspension muffle tube. Two plugs are plugged into an upper orifice and a lower orifice of the muffle tube respectively. Refractory fiber of the plugs contacts with the inner wall of the muffle tube so as to insulate heat for the upper end and lower end of the muffle tube. Each plug is formed by disposing the refractor fiber between an upper support plate and a lower support plate and fixedly connecting. A strip steel operation hole allowing for passage of strip steel is arranged at the center of each support plate and the refractor fiber of each plug in the diametric direction. The upper support plate of the upper plug is fixed on an orifice flange at the upper end of the muffle tube. The refractory fiber of the upper plug and the lower support of the upper plug are clamped in the upper end of the muffle tube. Part of the upper support plate of the lower plug and part of the refractor fiber of the lower plug are located inside the lower end of the muffle tube and tightly clamped. The other part of the lower support plate of the lower plug and the other part of the refractory fiber of the lower plug extend out of the lower orifice of the muffle tube. The end heat-insulating structure maintains the upper end and lower end of the muffle tube at reasonable temperature during high-temperature operation, service life of the muffle tube can be prolonged, and overall performance of an annealing furnace can be improved.
Description
Technical field
The present invention relates to the heat insulating construction of a kind of muffle tube end, particularly the heat insulating construction between vertical bright annealing furnace suspension muffle pipe upper and lower end parts and body of heater.
Background technology
The general process section decoration form adopting with the up heating of steel of vertical muffle bright annealing stove, be with steel to pass through successively from the bottom to top inlet seal, Ma Fushi heating zone, transition section, cooling section, deflector roll device, then enter down going channel, by exit seal, moves out of bright annealing oven.In vertical muffle bright annealing stove stove, have a muffle tube, in the decoration form with the up heating of steel, the upper end of muffle tube is fixed on furnace shell by flange, and upper end is fixed, and muffle tube freely dangles; Muffle tube lower end is generally inserted in oil seal groove, and is connected to inlet seal.
Single muffle tube is generally about 26 meters, adopts resistant to elevated temperatures nickel-bass alloy material to make.By a plurality of single-unit horses, not material is curling welds successively longitudinal joint after circularizing and obtain single-unit cylinder muffle tube, then obtains whole section of muffle tube by the cylindric muffle tube of more piece successively girth weld.
Muffle tube has resistive band or burner outward, by heating muffle pipe, reaches the object with steel that heating moves continuously in muffle tube, and muffle tube top temperature generally can reach 1150 ℃.Muffle tube pipe shaft can be adiabatic by the refractory fibre being arranged between furnace shell and resistive band or burner, muffle tube upper and lower ends is all connected with body of heater vitals, need to carry out insulation equally, and because muffle tube is from great and the features such as thermal creep and viscous deformation and retort furnace structure can occur under hot conditions, need do emphasis to the insulation of muffle tube upper and lower ends considers, to control muffle tube upper and lower ends place temperature in reasonable level, promote the work-ing life of vertical muffle bright annealing stove vitals and the overall performance of annealing furnace.
Summary of the invention
Technical problem to be solved by this invention is: the heat insulating construction that a kind of suspension muffle tube end is provided, make muffle tube when the lower work of high temperature (1150 ℃ of left and right), its upper and lower ends place temperature, in reasonable level, can promote the work-ing life of vertical muffle bright annealing stove vitals and the overall performance of annealing furnace.
The technical scheme that the present invention solves its technical problem employing is:
Suspension muffle tube end heat insulating construction, muffle tube is welded successively by a plurality of single-units, and the upper end of muffle tube is fixed on body of heater by flange, and lower end is inserted in oil seal groove; It is characterized in that: in the mouth of pipe of the upper and lower end of muffle tube, fill in respectively a chock plug, each chock plug contacts with muffle tube body inwall by refractory fibre; Each chock plug is by the sandwiched refractory fibre of upper and lower supporting plate and be fixedly connected with formation; The band steel operation hole that the center of each supporting plate and each chock plug refractory fibre is provided for passing with steel along diametric(al), and the band steel of the upper and lower chock plug operation upper and lower correspondence in hole and centerline hole coincidence; Upper chock plug mounting plate is fixed on the nozzle flange of muffle tube upper end, upper chock plug refractory fibre and upper chock plug bolster are placed in muffle tube upper end; A part of length of lower chock plug mounting plate and lower chock plug refractory fibre is positioned at muffle tube bottom and closely fixes, and another part length of lower chock plug bolster and lower chock plug refractory fibre is stretched out from the muffle tube bottom mouth of pipe.
By technique scheme, the upper and lower supporting plate of upper chock plug and lower chock plug mounting plate are circle, and upper chock plug refractory fibre periphery is cylindrical; Upper chock plug mounting plate external diameter is greater than the mouth of pipe external diameter of muffle tube upper end; Upper chock plug refractory fibre external diameter and upper chock plug bolster external diameter equal the spout diameter of muffle tube upper end; The a part of length periphery that is positioned at the lower chock plug refractory fibre of muffle tube bottom is cylindrical, and external diameter and lower chock plug mounting plate external diameter all equal the spout diameter of muffle tube bottom.
By technique scheme, band steel operation both sides, hole, a plurality of bolts are along vertically running through each chock plug refractory fibre and by nut, each chock plug refractory fibre is clamped in to up and down between supporting plate of upper and lower ends separately; Uniform a plurality of nut respectively on upper chock plug bolster lower surface, lower chock plug mounting plate upper surface.
By technique scheme, upper chock plug bolster with steel operation hole, be wider than the band steel operation hole of upper chock plug mounting plate, and from top to bottom, the band steel at upper chock plug refractory fibre center operation hole broadens gradually; Or the upper and lower supporting plate of upper chock plug is consistent with the band steel operation hole width at upper chock plug refractory fibre center.
By technique scheme, lower chock plug mounting plate with steel operation hole, be wider than the band steel operation hole of lower chock plug bolster, and from top to bottom, the band steel at lower chock plug refractory fibre center operation hole narrows down gradually; Or the upper and lower supporting plate of lower chock plug is consistent with the band steel operation hole width at lower chock plug refractory fibre center.
By technique scheme, a plurality of chock plug hangers of being convenient to lifting are all set on upper chock plug mounting plate upper surface, lower chock plug mounting plate upper surface.
By technique scheme, upper chock plug mounting plate upper surface, lower chock plug mounting plate all arrange stiffening web on upper surface.
By technique scheme, described band steel operation hole is not for having angular arc fillet through hole.
By technique scheme, the described upper chock plug bolster in muffle tube, lower chock plug mounting plate, bolt, nut of stretching into is high temperature alloy material and is made.
By technique scheme, each described refractory fibre thickness compression ratio is 0.5～0.9.
Thus, the present invention is in conjunction with the constructional feature of vertical muffle bright annealing stove, appropriate design muffle tube upper and lower end parts structure and refractory fibre are arranged mode, in muffle tube upper and lower ends inside, be all provided with adiabatic chock plug, by each chock plug refractory fibre, contact with muffle tube body inwall, can realize the thermal insulation of muffle tube upper and lower ends, make muffle tube when the lower work of high temperature (1150 ℃ of left and right), its upper and lower ends place temperature, in reasonable level, can promote the work-ing life of vertical muffle bright annealing stove vitals and the overall performance of annealing furnace.
Accompanying drawing explanation
Fig. 1 is chock plug vertical view on preferred embodiment of the present invention muffle tube;
Fig. 2 is the A1-A1 sectional view of Fig. 1;
Fig. 3 is chock plug vertical view under preferred embodiment of the present invention muffle tube;
Fig. 4 is the A2-A2 sectional view of Fig. 3;
Fig. 5 is that preferred embodiment of the present invention muffle tube top plug screw plug enters the structural representation behind inside, muffle tube upper end;
Fig. 6 is that under preferred embodiment of the present invention muffle tube, chock plug is filled in the structural representation behind inside, muffle tube lower end;
Wherein:
1 is that upper chock plug mounting plate, 2 is that nut, 3 is that upper chock plug hanger, 4 is that bolt, 5 is that upper chock plug bolster, 6 is that upper chock plug refractory fibre, 7 is that the first stiffening web, 8 is that lower chock plug refractory fibre, 9 is that lower chock plug hanger, 10 is that lower chock plug mounting plate, 11 is that lower chock plug bolster, 12 is that muffle tube upper end, 13 is muffle tube bottom
embodiment
Below in conjunction with accompanying drawing 1-6 and specific embodiment, describe in detail.
As chock plug on the muffle tube of Fig. 1 and 2: circular upper chock plug mounting plate 1 and upper chock plug bolster parallel and middle clamping top plug head refractory fibre 65 Shang Xia, the band steel that each supporting plate and upper chock plug refractory fibre 6 centers are provided for passing with steel along diametric(al) moves hole (centerline hole is this diametric(al)); Band steel operation both sides, hole, a plurality of bolt 4 are along vertically running through chock plug refractory fibre 6 and being fixedly connected with upper chock plug upper and lower supporter plate by nut 2 separately; Upper chock plug refractory fibre 6 peripherys are cylindrical, and external diameter approximates spout diameter and upper chock plug bolster 5 external diameters of muffle tube upper end 12; The external diameter of upper chock plug mounting plate 1 is greater than the mouth of pipe external diameter of muffle tube upper end 12; The outside of upper chock plug mounting plate 1 (upper surface) is provided with a plurality of upper chock plug hangers 3.
In order to maintain easily dismounting, nut 2 is fixing by bolt 4 in upper chock plug bolster 5 outsides (lower surface).
In order to make support board structure firm, in supporting plate upper end, wear steel operation hole two ends and be respectively provided with first stiffening web 7.
As Fig. 5, muffle tube top plug screw plug is entered to the inside of muffle tube upper end 12, realize the thermal insulation of muffle tube upper end; Now, upper chock plug mounting plate 1 is fixed on the nozzle flange of muffle tube upper end 12, and chock plug on muffle tube is realized to location.
Chock plug under muffle tube as shown in Figures 3 and 4: circular lower chock plug mounting plate 10 and lower chock plug bolster chock plug refractory fibre 8 under parallel and middle clamping Shang Xia 11, the band steel operation hole that each supporting plate and lower chock plug refractory fibre 8 centers are provided for passing with steel along diametric(al) is (as Fig. 4, be with steel operation hole width consistent from top to bottom, upper and lower corresponding coincidence of centerline hole); Band steel operation both sides, hole, a plurality of bolt 4 are along vertically running through lower chock plug refractory fibre 8 and being fixedly connected with the upper and lower supporting plate of lower chock plug by nut 2 separately; For lower chock plug lower end is contacted with other device, in the present embodiment, lower chock plug refractory fibre 8 peripherys are that step is cylindrical, and the external diameter of topping bar is greater than the external diameter of getting out of a predicament or an embarrassing situation; Certainly, according to different configuration contact requirements, the part that lower chock plug refractory fibre 8 stretches out muffle tube bottom 13 can be other shapes, as external diameter is greater than muffle tube bottom 13 mouth of pipe external diameters, is square cylinder or rhombus cylinder etc., accordingly, the shape of lower chock plug bolster 11 also wants correspondence to be adjusted into large-diameter circular, direction or rhombus; As long as assurance is positioned at the spout diameter that lower chock plug refractory fibre 8 external diameters of muffle tube bottom 13 mouths of pipe approximate muffle tube bottom 13; In the present embodiment, as Fig. 4, lower chock plug bolster 11 external diameters are slightly less than or equal lower chock plug refractory fibre 8 external diameter of getting out of a predicament or an embarrassing situation; The external diameter of topping bar of the external diameter of lower chock plug mounting plate 10 and lower chock plug refractory fibre 8 approximates the spout diameter of muffle tube bottom 13; The outside of lower chock plug mounting plate 10 (upper surface) is provided with a plurality of lower chock plug hangers 9.
Equally, in order to maintain easily dismounting, nut 2 is fixing by bolt 4 in lower chock plug mounting plate 10 outsides (upper surface).In order to make support board structure firm, in supporting plate upper end, wear steel operation hole two ends and be respectively provided with first stiffening web 7.
During installation, by lifting, be arranged on the following lifting gantry of chock plug under muffle tube, gradually chock plug under muffle tube is filled in muffle tube bottom 13, by the location of lifting gantry, the location of realization to chock plug under muffle tube, make overlapping with the upper and lower corresponding and centerline hole in steel operation hole and band steel operation hole on upper chock plug on lower chock plug, to be with steel can pass smoothly muffle tube.As shown in Figure 6, under muffle tube, the inside of muffle tube bottom 13 is filled in chock plug holding, by lower chock plug refractory fibre 8, contacts with inboard wall of tube body, realizes the thermal insulation of muffle tube lower end.
Further, for the benefit of be with steel operation, prevent from being with steel friction to occur and destroy belt steel surface with each chock plug in operational process, except the band steel operation hole of upper and lower width equalization, what chock plug bolster 5 can be set as shown in Figure 2 moves with steel the band steel operation hole that hole is wider than upper chock plug mounting plate 1, and from top to bottom, the band steel at upper chock plug refractory fibre 6 centers operation hole broadens gradually; In like manner, what lower chock plug mounting plate 10 can also be set is wider than the band steel operation hole of lower chock plug bolster 11 with steel operation hole, and from top to bottom, the band steel at lower chock plug refractory fibre 8 centers operation hole narrow down gradually (not shown).Thus, the above bolster of the layout edge wire of the refractory fibre of locating with steel operation hole is boundary, avoids being with place, steel operation hole refractory fibre to protrude and scratches belt steel surface.
Wherein:
The described upper chock plug bolster 5 in muffle tube, lower chock plug mounting plate 10, bolt 4, nut 2 of stretching into is high temperature resistant nickel-base alloy (601H) Material texture.
Described refractory fibre thickness compression ratio is 0.5～0.9, preferably 0.7.
Band steel operation hole on described upper and lower supporting plate will adopt arc-shaped transition, does not have angular arc fillet through hole; Be preferably rectangle elliptical hole; Now, the first stiffening web 7 crooked radians on supporting plate are greater than the circular arc crooked radian at rectangle elliptical aperture rectangle two ends, are lifted at the reliability of hot conditions lower member.
Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, and the equivalence of therefore doing according to the present patent application the scope of the claims changes, and still belongs to protection scope of the present invention.
Claims (8)
1. suspension muffle tube end heat insulating construction, muffle tube is welded successively by a plurality of single-units, and the upper end of muffle tube is fixed on body of heater by flange, and lower end is inserted in oil seal groove; It is characterized in that: in the mouth of pipe of the upper and lower end of muffle tube, fill in respectively a chock plug, each chock plug contacts with muffle tube body inwall by refractory fibre; Each chock plug is by the sandwiched refractory fibre of upper and lower supporting plate and be fixedly connected with formation; The band steel operation hole that the center of each supporting plate and each chock plug refractory fibre is provided for passing with steel along diametric(al), and the band steel of the upper and lower chock plug operation upper and lower correspondence in hole and centerline hole coincidence; Upper chock plug mounting plate is fixed on the nozzle flange of muffle tube upper end, upper chock plug refractory fibre and upper chock plug bolster are placed in muffle tube upper end; A part of length of lower chock plug mounting plate and lower chock plug refractory fibre is positioned at muffle tube bottom and closely fixes, and another part length of lower chock plug bolster and lower chock plug refractory fibre is stretched out from the muffle tube bottom mouth of pipe; The upper and lower supporting plate of upper chock plug and lower chock plug mounting plate are circle, and upper chock plug refractory fibre periphery is cylindrical; Upper chock plug mounting plate external diameter is greater than the mouth of pipe external diameter of muffle tube upper end; Upper chock plug refractory fibre external diameter and upper chock plug bolster external diameter equal the spout diameter of muffle tube upper end; The a part of length periphery that is positioned at the lower chock plug refractory fibre of muffle tube bottom is cylindrical, and external diameter and lower chock plug mounting plate external diameter all equal the spout diameter of muffle tube bottom; Band steel operation both sides, hole, a plurality of bolts are along vertically running through each chock plug refractory fibre and by nut, each chock plug refractory fibre is clamped in to up and down between supporting plate of upper and lower ends separately; Uniform a plurality of nut respectively on upper chock plug bolster lower surface, lower chock plug mounting plate upper surface.
2. suspension muffle tube end heat insulating construction according to claim 1, it is characterized in that: above chock plug bolster moves with steel the band steel operation hole that hole is wider than upper chock plug mounting plate, and from top to bottom, the band steel at upper chock plug refractory fibre center operation hole broadens gradually; Or the upper and lower supporting plate of upper chock plug is consistent with the band steel operation hole width at upper chock plug refractory fibre center.
3. suspension muffle tube end heat insulating construction according to claim 1 and 2, it is characterized in that: lower chock plug mounting plate with steel operation hole, be wider than the band steel operation hole of lower chock plug bolster, and from top to bottom, the band steel at lower chock plug refractory fibre center operation hole narrows down gradually; Or the upper and lower supporting plate of lower chock plug is consistent with the band steel operation hole width at lower chock plug refractory fibre center.
4. suspension muffle tube end heat insulating construction according to claim 3, is characterized in that: a plurality of chock plug hangers of being convenient to lifting are all set on upper chock plug mounting plate upper surface, lower chock plug mounting plate upper surface.
5. according to the suspension muffle tube end heat insulating construction described in claim 1 or 2 or 4, it is characterized in that: upper chock plug mounting plate upper surface, lower chock plug mounting plate all arrange stiffening web on upper surface.
6. suspension muffle tube end heat insulating construction according to claim 5, is characterized in that: described band steel operation hole is not for having angular arc fillet through hole.
7. according to the suspension muffle tube end heat insulating construction described in claim 1 or 2 or 4 or 6, it is characterized in that: the described upper chock plug bolster in muffle tube, lower chock plug mounting plate, bolt, nut of stretching into is high temperature alloy material and is made.
8. suspension muffle tube end heat insulating construction according to claim 7, is characterized in that: each described refractory fibre thickness compression ratio is 0.5～0.9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210343171.5A CN102851482B (en) | 2012-09-17 | 2012-09-17 | End heat-insulating structure of suspension muffle tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210343171.5A CN102851482B (en) | 2012-09-17 | 2012-09-17 | End heat-insulating structure of suspension muffle tube |
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| Publication Number | Publication Date |
|---|---|
| CN102851482A CN102851482A (en) | 2013-01-02 |
| CN102851482B true CN102851482B (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210343171.5A Expired - Fee Related CN102851482B (en) | 2012-09-17 | 2012-09-17 | End heat-insulating structure of suspension muffle tube |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103438215B (en) * | 2013-09-10 | 2015-07-22 | 中冶南方(武汉)威仕工业炉有限公司 | Oil seal isolating device at bottom of muffle pipe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201214675Y (en) * | 2008-05-14 | 2009-04-01 | 宁波宝新不锈钢有限公司 | Brilliant muffle outlet seal stopper |
| CN202246772U (en) * | 2011-07-04 | 2012-05-30 | 安徽金安不锈钢铸造有限公司 | Seal plug for bright muffle furnace outlet |
| CN202881328U (en) * | 2012-09-17 | 2013-04-17 | 中冶南方(武汉)威仕工业炉有限公司 | Heat insulating structure at end of muffle tube |
-
2012
- 2012-09-17 CN CN201210343171.5A patent/CN102851482B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201214675Y (en) * | 2008-05-14 | 2009-04-01 | 宁波宝新不锈钢有限公司 | Brilliant muffle outlet seal stopper |
| CN202246772U (en) * | 2011-07-04 | 2012-05-30 | 安徽金安不锈钢铸造有限公司 | Seal plug for bright muffle furnace outlet |
| CN202881328U (en) * | 2012-09-17 | 2013-04-17 | 中冶南方(武汉)威仕工业炉有限公司 | Heat insulating structure at end of muffle tube |
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| CN102851482A (en) | 2013-01-02 |
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