CN203653600U - Multi-reinforcement-tube desulfurizing lance for pre-treating molten iron - Google Patents
Multi-reinforcement-tube desulfurizing lance for pre-treating molten iron Download PDFInfo
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- CN203653600U CN203653600U CN201420020930.9U CN201420020930U CN203653600U CN 203653600 U CN203653600 U CN 203653600U CN 201420020930 U CN201420020930 U CN 201420020930U CN 203653600 U CN203653600 U CN 203653600U
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Abstract
The utility model relates to a multi-reinforcement-tube desulfurizing lance for pre-treating molten iron. The technical scheme is as follows: 4-6 reinforcement tubes 1 are uniformly fixed on the outer wall of an injection pipe 2, the reinforcement tubes 1 are fixedly connected through reinforcing ribs 6, anchoring parts 3 are uniformly welded on the outer wall of each reinforcement tube 1 along the axis direction, and the lower end of the injection pipe 2 is vertically communicated with an inner tube 5 with a nozzle hole; an outer refractory lining 4 formed by pouring is integrated with the injection pipe 2, the reinforcement tubes 1, the inner tube 5 with the nozzle hole, the reinforcing ribs 6 and the anchoring parts 3. The upper end of the injection pipe 2 extends out of the upper end of the outer refractory lining 4, the inner tube 5 with the nozzle hole is arranged in a position close to the lower end of the outer refractory lining 4, and ports at two ends of the inner tube 5 with the nozzle hole are located at the outer wall of the outer refractory lining 4. The upper ends of the reinforcement tubes 1 are all level with the upper end of the outer refractory lining 4, and the vertical distance from the lower ends of the reinforcement tubes 1 to a central line of the inner tube 5 with the nozzle hole is 100-300mm. The multi-reinforcement-tube desulfurizing lance has the characteristics of simple structure and long service life.
Description
Technical field
The utility model belongs to desulfurizing iron equipment technical field.Relate in particular to many reinforced pipes desulphurization spray gun that a kind of hot metal pretreatment is used.
Background technology
In iron and steel, the content of sulphur directly affects iron and steel performance.The method of the hot metal pretreatment that current each big steel factory adopts comprises blowing process and mechanical mixing method, and the former desulfuration efficiency is higher than the latter.Therefore, external desulfurization of hot metal injection technology is widely used in metallurgy industry.
As the external desulfurization of hot metal pretreated important component part of jetting, the working conditions of spray gun is severe, frequently bears thermal shocking in the molten iron of 1350 ~ 1400 DEG C.In use bearing winding-up impacts with the thermal shock in cooling alternation procedure, the thermal stress distribution that this circulation change produces has impact in various degree with variation to spray gun structure and gun material, can cause refractory materials outer lining to peel off and the bending of injection tube, particularly produce longitudinal crack at the refractory materials outer lining of spray gun, and then develop into ablation injection tube, have a strong impact on the normal work of spray gun, shortened working hour and the work-ing life of spray gun.
At present, the spray gun that pre-treatment is used of jetting outward of the molten iron furnace before metallurgy industry converter steelmaking, is made up of two portions conventionally, and the one, barral of a gun, the 2nd, rifle body.Barral of a gun is for fixing whole desulphurization system, and rifle body comprises refractory materials outer lining, reinforced pipe, injection tube, anchoring piece and spray orifice inner tube.As: " long-lived desulfurizing spray gun for flat iron reinforcing plate " (ZL01252249. X) and " hot metal pretreatment spray gun " are although (ZL01251907.3) solved preferably spray gun injection tube and the rifle head problem that comes off, and extended the spray gun average operation time, but still have the problem such as local shedding and injection tube ablation because of longitudinal crack that reinforced pipe or stiffening web differential expansion produce, refractory materials outer lining that longitudinal crack causes, thereby further improve the work-ing life of having limited spray gun.
Summary of the invention
The utility model is intended to overcome the deficiencies in the prior art, and object is to provide many reinforced pipes desulphurization spray gun that a kind of hot metal pretreatment simple in structure and that the life-span is long is used.
To achieve these goals, the technical solution adopted in the utility model is: the outer wall of injection tube is fixed with 4 ~ 6 reinforced pipes equably, between reinforced pipe, be fixedly connected by stiffening web, the outer wall of each reinforced pipe is welded with anchoring piece equably along axis direction, the lower end of injection tube communicates with spray orifice inner tube, and the medullary ray of injection tube is vertical with the medullary ray of spray orifice inner tube; Refractory materials outer lining and injection tube, reinforced pipe, spray orifice inner tube, stiffening web and anchoring piece that cast forms are integrated.
The upper end of refractory materials outer lining is stretched out in the upper end of injection tube, and spray orifice inner tube is flatly arranged on the close lower end of refractory materials outer lining, and the two ends port of spray orifice inner tube is positioned at the outer wall place of refractory materials outer lining.The upper end of reinforced pipe is all concordant with the upper end of refractory materials outer lining, and the lower end of reinforced pipe is positioned at the top of spray orifice inner tube, and the vertical range of the lower end of reinforced pipe and spray orifice inner tube medullary ray is 100 ~ 300mm.
Described anchoring piece diameter is 6mm, and the vertical range between anchoring piece is 300 ~ 400mm..
Described stiffening web is strip, and material is steel.
Owing to adopting technique scheme, the utility model compared with prior art has following positively effect:
The utility model is fixed on 4 ~ 6 reinforced pipes the outer wall of injection tube equably, injection tube, reinforced pipe, spray orifice inner tube, stiffening web and anchoring piece are cast for to one with refractory material casting material, be that refractory materials outer lining 5 is integrated with injection tube 2, reinforced pipe 1, spray orifice inner tube 5, stiffening web 6 and anchoring piece 3, therefore simple in structure.The temperature that 4 ~ 6 reinforced pipes that the utility model adopts bear is higher than injection tube, can effectively reduce the thermal stresses of injection tube, and delay the speed of crackle to injection tube diffusion, the stiffening web being welded between reinforced pipe can effectively improve the intensity of reinforced pipe, thus the work-ing life of having improved desulphurization spray gun.
Therefore, the utlity model has simple in structure and feature long service life.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is the A-A cross-sectional schematic in Fig. 1;
Fig. 3 is the B-B cross-sectional schematic in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail with concrete enforcement, the not restriction to its protection domain.
Many reinforced pipes desulphurization spray gun that a kind of hot metal pretreatment is used.As shown in Figure 1, Figure 2 and Figure 3, the outer wall of injection tube 2 is fixed with 4 reinforced pipes 1 equably, 1 of reinforced pipe is fixedly connected by stiffening web 6, the outer wall of each reinforced pipe 1 is welded with anchoring piece 3 equably along axis direction, the lower end of injection tube 2 communicates with spray orifice inner tube 5, and the medullary ray of injection tube 2 is vertical with the medullary ray of spray orifice inner tube 5; The refractory materials outer lining 4 that cast forms is integrated with injection tube 2, reinforced pipe 1, spray orifice inner tube 5, stiffening web 6 and anchoring piece 3.
As shown in Figure 1, the upper end of refractory materials outer lining 4 is stretched out in the upper end of injection tube 2, and spray orifice inner tube 5 is flatly arranged on the close lower end of refractory materials outer lining 4, and the two ends port of spray orifice inner tube 5 is positioned at the outer wall place of refractory materials outer lining 4.The upper end of reinforced pipe 1 is all concordant with the upper end of refractory materials outer lining 4, and the lower end of reinforced pipe 1 is positioned at the top of spray orifice inner tube 5, and the vertical range of the lower end of reinforced pipe 1 and spray orifice inner tube 5 medullary rays is 100 ~ 200mm.
Described anchoring piece 3 diameters are 6mm, and the vertical range that anchoring piece is 3 is 300 ~ 350mm..
Described stiffening web 6 is strip, and material is steel.
Many reinforced pipes desulphurization spray gun that a kind of hot metal pretreatment is used.Except following technical parameter, all the other are with embodiment 1:
The outer wall of described injection tube 2 is fixed with 5 ~ 6 reinforced pipes 1 equably;
The vertical range of the lower end of described reinforced pipe 1 and spray orifice inner tube 5 medullary rays is 200 ~ 300mm;
Described anchoring piece 3 diameters are 6mm, and the vertical range that anchoring piece is 3 is 350 ~ 400mm..
This embodiment compared with prior art has following positively effect:
This embodiment is fixed on 4 ~ 6 reinforced pipes 1 outer wall of injection tube 2 equably, injection tube, reinforced pipe, spray orifice inner tube, stiffening web and anchoring piece are cast for to one with refractory material casting material, be that refractory materials outer lining 5 is integrated with injection tube 2, reinforced pipe 1, spray orifice inner tube 5, stiffening web 6 and anchoring piece 3, therefore simple in structure.The temperature that 4 ~ 6 reinforced pipes 1 that this embodiment adopts bear is than injection tube 2 height, can effectively reduce the thermal stresses of injection tube, and delay the speed that crackle spreads to injection tube 2, the stiffening web 3 being welded between reinforced pipe 1 can effectively improve the intensity of reinforced pipe, thus the work-ing life of having improved spray gun.
Therefore, this embodiment has simple in structure and feature long service life.
Claims (3)
1. many reinforced pipes that hot metal pretreatment is used desulphurization spray gun, the structure that it is characterized in that described desulphurization spray gun is: the outer wall of injection tube (2) is fixed with 4 ~ 6 reinforced pipes (1) equably, between reinforced pipe (1), be fixedly connected by stiffening web (6), the outer wall of each reinforced pipe (1) is welded with anchoring piece (3) equably along axis direction, the lower end of injection tube (2) communicates with spray orifice inner tube (5), and the medullary ray of injection tube (2) is vertical with the medullary ray of spray orifice inner tube (5); The refractory materials outer lining (4) that cast forms is integrated with injection tube (2), reinforced pipe (1), spray orifice inner tube (5), stiffening web (6) and anchoring piece (3);
The upper end of refractory materials outer lining (4) is stretched out in the upper end of injection tube (2), spray orifice inner tube (5) is flatly arranged on the close lower end of refractory materials outer lining (4), and the two ends port of spray orifice inner tube (5) is positioned at the outer wall place of refractory materials outer lining (4); The upper end of reinforced pipe (1) is all concordant with the upper end of refractory materials outer lining (4), the lower end of reinforced pipe (1) is positioned at the top of spray orifice inner tube (5), and the vertical range of the lower end of reinforced pipe (1) and spray orifice inner tube (5) medullary ray is 100 ~ 300mm.
2. many reinforced pipes desulphurization spray gun that hot metal pretreatment according to claim 1 is used, the diameter that it is characterized in that described anchoring piece (3) is 6mm, the vertical range between anchoring piece (3) is 300 ~ 400mm..
3. many reinforced pipes desulphurization spray gun that hot metal pretreatment according to claim 1 is used, is characterized in that described stiffening web (6) is strip, and material is steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420020930.9U CN203653600U (en) | 2014-01-14 | 2014-01-14 | Multi-reinforcement-tube desulfurizing lance for pre-treating molten iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420020930.9U CN203653600U (en) | 2014-01-14 | 2014-01-14 | Multi-reinforcement-tube desulfurizing lance for pre-treating molten iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203653600U true CN203653600U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420020930.9U Expired - Fee Related CN203653600U (en) | 2014-01-14 | 2014-01-14 | Multi-reinforcement-tube desulfurizing lance for pre-treating molten iron |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740881A (en) * | 2014-01-14 | 2014-04-23 | 武汉科技大学 | Desulfurization spray gun with multiple reinforcing tubes |
-
2014
- 2014-01-14 CN CN201420020930.9U patent/CN203653600U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103740881A (en) * | 2014-01-14 | 2014-04-23 | 武汉科技大学 | Desulfurization spray gun with multiple reinforcing tubes |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20190114 |
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| CF01 | Termination of patent right due to non-payment of annual fee |