CN217103959U - Flue of converter waste heat boiler - Google Patents
Flue of converter waste heat boiler Download PDFInfo
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- CN217103959U CN217103959U CN202220153150.6U CN202220153150U CN217103959U CN 217103959 U CN217103959 U CN 217103959U CN 202220153150 U CN202220153150 U CN 202220153150U CN 217103959 U CN217103959 U CN 217103959U
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Abstract
The utility model provides a converter exhaust-heat boiler flue, including fire door section flue, skirt cover and water-cooling ring, fire door section flue is installed in the high-rise frame of converter top, the water-cooling ring has the heated tube that is the annular and arranges one, the bottom of fire door section flue is nested in the heated tube of water-cooling ring one, and leaves certain clearance between fire door section flue lateral wall and the heated tube inside wall, the skirt cover has the heated tube two that is the horn mouth shape, heated tube two arranges in the clearance space that leaves between fire door section flue and the heated tube one, and heated tube two can reciprocate in this clearance space. The utility model discloses a simple structure sets up the skirt activity between water-cooling ring inner wall and fire door section flue outer wall, can play the guide effect when lifting the skirt through water-cooling ring inner wall and fire door section flue outer wall, also can play the effect of certain sealed flue gas, and it is excessive to reduce the flue gas, has reduced maintenance work volume greatly.
Description
Technical Field
The utility model belongs to the technical field of exhaust-heat boiler, concretely relates to converter exhaust-heat boiler flue.
Background
The converter vaporization flue is used for recovering sensible heat of high-temperature flue gas generated in the converter steelmaking process, and the flue gas is sent into a subsequent dust removal system after being reduced to a certain temperature. As a large amount of high-temperature flue gas is generated in the converter blowing process, the flue gas temperature is usually as high as 2000 ℃, the reaction in the converter is violent, and the risk of slag splashing exists. The skirt cover needs to be lowered in order to prevent the sucked air from causing coal gas combustion when the converter blows oxygen, the skirt cover needs to be lifted when the converter shakes the converter, and the skirt cover adopts a water cooling structure in order to prevent the skirt cover from being burnt out and recycling the waste heat of the flue gas. Traditional skirt cover and fire door section flue adopt steam seal, nitrogen gas seal or mechanical seal, and wherein, steam seal and nitrogen gas seal all can cause the waste of the energy, and mechanical seal structure is complicated, and the sealing member belongs to the vulnerable part moreover, and maintenance work volume is big.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a converter exhaust-heat boiler flue can solve the partial defect that exists among the prior art at least.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a converter exhaust-heat boiler flue, includes fire door section flue, skirt and water-cooling ring, fire door section flue is installed in the high-rise frame of converter top, the water-cooling ring has and is the annular heated tube that arranges one, the bottom of fire door section flue is nested in the heated tube of water-cooling ring one, and leaves certain clearance between fire door section flue lateral wall and the heated tube inside wall, the skirt has and is the heated tube two of horn mouth shape, heated tube two arranges in the clearance space that leaves between fire door section flue and the heated tube one, and heated tube two can reciprocate in this clearance space.
Furthermore, the water cooling ring comprises a heated pipe I, a water inlet header I and a water outlet header I, wherein the water inlet header I and the water outlet header I are both arranged on the outer side of the heated pipe I, and the water inlet header I and the water outlet header I are symmetrically arranged.
Furthermore, the heated tube I is of an annular structure with the same inner diameter in the height direction, and the inner wall and the outer wall of the heated tube I are both smooth wall surfaces.
Further, the skirt cover comprises a heated pipe II, a water inlet header II, a water outlet header II and a lifting guide assembly, the water outlet header II and the water inlet header II are arranged at intervals from top to bottom, the diameter of the water inlet header II is larger than that of the water outlet header II, the water outlet header II and the water inlet header II are both located on the outer side of the heated pipe I of the water-cooled ring, the heated pipe II is vertically arranged, the water inlet end of the heated pipe II is connected with the water inlet header II, and the water outlet end of the heated pipe II is connected with the water outlet header II.
Furthermore, the lifting guide assemblies are provided with a plurality of groups and are arranged at equal intervals along the two circumferential directions of the heated pipe.
Furthermore, the lifting guide assembly comprises a fixed support, a lifting driving piece and a lifting power transmission piece, the heated pipe II, the water inlet header II and the water outlet header II are fixedly connected to the fixed support, and the lifting driving piece drives the fixed support to move up and down along the height direction of the water cooling ring through the lifting power transmission piece.
Furthermore, the lifting guide assembly further comprises a guide wheel, the guide wheel is fixedly mounted on the fixing support, and the guide wheel is arranged to be attached to the outer wall of the water-cooling ring.
Furthermore, the top of the heated tube II is provided with an outward expansion section which extends outwards in a gradually expanding shape.
Furthermore, the furnace mouth section flue comprises a third heated pipe, a third water inlet header and a third water outlet header, and the third water inlet header and the third water outlet header are respectively connected to the lower part and the upper part of the third heated pipe.
Furthermore, the heated tube III comprises a vertical section and an inclined section, the vertical section is positioned outside the heated tube I, the inclined section is positioned inside the heated tube I, the inclined section is of a horn mouth structure, the inclined section is provided with a double-layer wall which is arranged inside and outside, the outer wall of the inclined section is a vertical surface, and the inner wall of the inclined section is an inclined surface.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a converter exhaust-heat boiler flue simple structure sets up the skirt activity between water-cooling ring inner wall and fire door section flue outer wall, can play the guide effect when lifting the skirt through water-cooling ring inner wall and fire door section flue outer wall, also can play the effect of certain sealed flue gas, and it is excessive to reduce the flue gas, has reduced maintenance work volume greatly.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of a flue structure of a converter exhaust-heat boiler in which a skirt cover is located at a cover lowering position in the embodiment of the present invention;
FIG. 2 is a schematic structural view of a flue of a converter waste heat boiler in which a skirt cover is located at a cover lifting position in the embodiment of the present invention;
fig. 3 is a schematic structural view of a skirt cover in an embodiment of the invention;
FIG. 4 is an enlarged view of section I of FIG. 3;
fig. 5 is a top view of a skirt in an embodiment of the invention;
FIG. 6 is a schematic structural diagram of a water cooling ring in an embodiment of the present invention;
FIG. 7 is an enlarged view of portion A of FIG. 6;
FIG. 8 is an enlarged view of portion B of FIG. 6;
FIG. 9 is a top view of a water cooling ring in an embodiment of the present invention.
Description of reference numerals: 1. a skirt; 2. water cooling ring; 3. a furnace mouth section flue; 4. a third water outlet header; 5. a heated tube III; 6. a third water inlet header; 7. a converter mouth; 8. a heated tube II; 9. a second water inlet header; 10. a lifting guide assembly; 11. a second water outlet header; 12. fixing a bracket; 13. a lifting power transmission member; 14. a guide wheel; 15. an outward expansion section; 16. bending the section; 17. a first water inlet header; 18. a first heated tube; 19. and a first water outlet header.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
The terms "a", "an", "two" and "three" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, a feature defined as "a", "an", "two", or "three" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1, fig. 2, fig. 3 and fig. 6, the embodiment provides a flue of a converter waste heat boiler, which comprises a flue 3 of a furnace mouth section, a skirt 1 and a water cooling ring 2, the furnace mouth section flue 3 is arranged in a high-rise frame above the converter, the water-cooling ring 2 is arranged at the bottom of the furnace mouth section flue 3 through a flange, the water-cooling ring 2 is provided with a first heating pipe 18 which is annularly arranged, the inner diameter of the first heating pipe 18 is slightly larger than the inner diameter of the outer wall of the furnace mouth section flue 3, the bottom of the furnace mouth section flue 3 is nested in the first heating pipe 18 of the water-cooling ring 2, and a certain gap is left between the outer side wall of the flue 3 at the furnace mouth section and the inner side wall of the heated tube I18, the skirt cover 1 is provided with a heated tube II 8 in a bell mouth shape, the second heated pipe 8 is arranged in a gap space reserved between the furnace mouth section flue 3 and the first heated pipe 18, and the second heated pipe 8 can move up and down in the gap space; when oxygen is blown to the converter, the skirt cover 1 is lowered to a cover lowering position (as shown in figure 1), and the bottom of the skirt cover 1 covers the converter mouth 7, so that a certain smoke sealing effect can be achieved, and the smoke overflow in the converter smelting process is reduced; when the furnace needs to be shaken, the skirt cover 1 is lifted to a cover lifting position (as shown in figure 2), and the heated tube II 8 of the skirt cover 1 is arranged between the heated tube I18 of the water-cooled ring 2 and the outer side of the furnace mouth section flue 3, so that the inner wall of the water-cooled ring 2 and the outer wall of the furnace mouth section flue 3 can be used for guiding the lifting of the skirt cover 1. The flue of the converter waste heat boiler provided by the embodiment is simple in structure, effectively solves the sealing problem between the skirt cover and the flue at the furnace mouth section through the design of the skirt cover structure and the arrangement mode, and is small in maintenance workload, safe and reliable.
In a detailed embodiment, as shown in fig. 1 and 2, the throat section flue 3 comprises a heated tube three 5, a water inlet header three 6 and a water outlet header three 4, and the water inlet header three 6 and the water outlet header three 4 are respectively connected to the lower part and the upper part of the heated tube three 5; optimally, water cooling jackets can be arranged on an oxygen lance insertion opening, a secondary oxygen lance insertion opening and a charging opening on the furnace mouth section flue 3 so as to ensure the cooling effect of the oxygen lance, the secondary oxygen lance and the feed opening. Specifically, the heated tube III 5 comprises a vertical section and an inclined section, the vertical section is located outside the heated tube I18, the inclined section is located inside the heated tube I18, the inclined section is of a horn mouth structure, the inclined section is provided with a double-layer wall which is arranged inside and outside, the inner wall of the inclined section is an inclined plane, the outer wall of the inclined section is a vertical plane, and a concentric annular chamber is formed between the outer wall and the inner wall of the water-cooled ring 2.
In one embodiment, as shown in fig. 6, 7, 8 and 9, the water cooling ring 2 includes a first heated tube 18, a first water inlet header 17 and a first water outlet header 19, the first heated tube 18 is arranged in a ring shape, the inner wall of the first heated tube 18 is vertical, a concentric ring-shaped chamber is formed between the first heated tube 18 and the outer wall of the third heated tube 5 of the furnace mouth section flue 3, the first water inlet header 17 and the first water outlet header 19 are both arranged outside the first heated tube 18, the first water inlet header 17 and the first water outlet header 19 are symmetrically arranged, the water inlet end of the first heated tube 18 is connected with the first water inlet header 17, and the water outlet end of the first heated tube 18 is connected with the first water outlet header 19; further, the heated tube 18 is of an annular structure with the same inner diameter in the height direction, and the inner wall and the outer wall of the heated tube 18 are both smooth wall surfaces.
As a specific embodiment, as shown in fig. 3, 4 and 5, the skirt 1 includes a heated pipe two 8, a water inlet header two 9, a water outlet header two 11 and a lifting guide component 10, the water outlet header two 11 and the water inlet header two 9 are arranged at intervals up and down, the diameter of the water inlet header two 9 is larger than that of the water outlet header two 11, the water outlet header two 11 and the water inlet header two 9 are both located outside the heated pipe one 18 of the water-cooled ring 2, the heated pipes two 8 are vertically arranged side by side in a circumferential direction, and form a bell mouth-shaped structure with a small top and a large bottom as a whole, the heated pipe two 8 is arranged in a concentric annular cavity formed between the inner wall of the heated pipe one 18 of the water-cooled ring 2 and the outer wall of the heated pipe three 5 of the furnace mouth section flue 3, the water inlet end of the heated pipe two 8 is connected with the water inlet header two 9, the water outlet end of the heated pipe two 8 is connected with the water outlet header two 11, the lift guide assembly 10 is used to control the lifting and lowering of the skirt 1.
Optimally, the water inlet end and the water outlet end of the heated tube II 8 are both positioned at the bottom of the heated tube II 8, the water inlet end and the water outlet end of the heated tube II 8 are both provided with bending sections 16 extending outwards, and the bending sections 16 are connected with the water inlet header II 9 and the water outlet header II 11, so that cooling water carries out waste heat utilization on high-temperature flue gas in the heated tube II 8 of the skirt cover in a vertically circuitous operation mode, the waste heat utilization rate is improved, and meanwhile, the bending structural design at the bottom of the heated tube II 8 further improves the effect of sealing the flue gas of the skirt cover 1.
Optimally, the top of the heated tube II 8 is provided with an outward expanding section 15 which extends outwards in a gradually expanding shape, and the design of the outward expanding section 15 can ensure that the heated tube II 8 keeps a certain distance with the inner wall of the water-cooling ring 2 and the outer wall of the furnace mouth section flue 3, so that the guiding effect on the lifting of the skirt cover 1 is further realized, a certain smoke sealing effect can be realized, and the smoke overflow is reduced.
Specifically, as shown in fig. 5, the lifting guide assemblies 10 may be designed into a plurality of groups, and are respectively arranged along the circumferential direction of the heated tube two 8 at equal intervals, in this embodiment, four groups of lifting guide assemblies 10 are provided; skirt 1 promotes or descends the in-process, promotes guide assembly 10 through the multiunit and provides the effort to skirt 1 simultaneously, guarantees the stability that skirt 1 promoted or descends the process.
In an optional embodiment, the lifting guide assembly 10 includes a fixed support 12, a lifting driving member (not shown in the figure) and a lifting power transmission member 13, the heated pipe two 8, the water inlet header two 9 and the water outlet header two 11 are all fixedly connected to the fixed support 12, and the lifting driving member drives the fixed support 12 to move up and down along the height direction of the water-cooled ring 2 through the lifting power transmission member 13, so as to control the lifting and lowering of the skirt cover 1. The lifting driving member may be a hoisting device or a hydraulic device, and the lifting power transmission member 13 may be a lifting guide chain or a lifting rod, although the specific choice is not limited thereto.
Preferably, the lifting guide assembly 10 further comprises a guide wheel 14, the guide wheel 14 is fixedly installed on the fixing bracket 12, and the guide wheel 14 is arranged to be tightly attached to the outer wall of the water-cooling ring 2, so that the stability of the skirt 1 in the lifting process is further ensured through the arrangement of the guide wheel 14.
To sum up, the utility model provides a this kind of converter exhaust-heat boiler flue simple structure sets up the skirt activity between water-cooling ring inner wall and fire door section flue outer wall, can play the guide effect when lifting the skirt through water-cooling ring inner wall and fire door section flue outer wall, also can play the effect of certain sealed flue gas, and it is excessive to reduce the flue gas, has reduced maintenance work volume greatly.
The above examples are merely illustrative of the present invention, and do not constitute a limitation to the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention.
Claims (10)
1. A converter exhaust-heat boiler flue which is characterized in that: including fire door section flue, skirt and water-cooling ring, fire door section flue is installed in the high-rise frame of converter top, the water-cooling ring has and is the annular heated tube that arranges one, the bottom of fire door section flue is nested in the heated tube of water-cooling ring one, and leaves certain clearance between fire door section flue lateral wall and the heated tube inside wall, the skirt has and is the heated tube two of horn mouth shape, the heated tube two is arranged in the clearance space that leaves between fire door section flue and the heated tube one, and the heated tube two can reciprocate in this clearance space.
2. The converter waste heat boiler flue of claim 1, wherein: the water cooling ring comprises a first heated pipe, a first water inlet header and a first water outlet header, wherein the first water inlet header and the first water outlet header are both arranged on the outer side of the first heated pipe, and the first water inlet header and the first water outlet header are symmetrically arranged.
3. The flue of the converter waste heat boiler as claimed in claim 1 or 2, wherein: the first heated pipe is of an annular structure with the same inner diameter in the height direction, and the inner wall and the outer wall of the first heated pipe are smooth wall surfaces.
4. The converter waste heat boiler flue of claim 1, wherein: the skirt cover comprises a heated pipe II, a water inlet header II, a water outlet header II and a lifting guide assembly, the water outlet header II and the water inlet header II are arranged at intervals from top to bottom, the diameter of the water inlet header II is larger than that of the water outlet header II, the water outlet header II and the water inlet header II are both located on the first heated pipe outside of the water-cooled ring, the two heated pipes are vertically arranged, the water inlet ends of the two heated pipes are connected with the water inlet header II, and the water outlet ends of the two heated pipes are connected with the water outlet header II.
5. The converter waste heat boiler flue of claim 4, wherein: the lifting guide assemblies are provided with a plurality of groups and are arranged at equal intervals along the two circumferential directions of the heated pipes.
6. The converter waste heat boiler flue of claim 4, wherein: the lifting guide assembly comprises a fixed support, a lifting driving piece and a lifting power transmission piece, the heated pipe II, the water inlet header II and the water outlet header II are fixedly connected to the fixed support, and the lifting driving piece drives the fixed support to move up and down along the height direction of the water cooling ring through the lifting power transmission piece.
7. The flue of the converter waste heat boiler of claim 6, wherein: the lifting guide assembly further comprises a guide wheel, the guide wheel is fixedly mounted on the fixed support, and the guide wheel is arranged to be attached to the outer wall of the water cooling ring.
8. The flue of the converter waste heat boiler as claimed in claim 1 or 4, wherein: the top of the heated tube II is provided with an outward expansion section which extends outwards in a gradually expanding shape.
9. The converter waste heat boiler flue of claim 1, wherein: the furnace mouth section flue comprises a heated pipe III, a water inlet header III and a water outlet header III, and the water inlet header III and the water outlet header III are respectively connected to the lower part and the upper part of the heated pipe III.
10. The flue of the converter waste heat boiler of claim 9, wherein: the heating tube III comprises a vertical section and an inclined section, the vertical section is located outside the heating tube I, the inclined section is located inside the heating tube I, the inclined section is of a horn mouth structure, the inclined section is provided with a double-layer wall arranged inside and outside, the outer wall of the inclined section is a vertical surface, and the inner wall of the inclined section is an inclined surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220153150.6U CN217103959U (en) | 2022-01-20 | 2022-01-20 | Flue of converter waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220153150.6U CN217103959U (en) | 2022-01-20 | 2022-01-20 | Flue of converter waste heat boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217103959U true CN217103959U (en) | 2022-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220153150.6U Active CN217103959U (en) | 2022-01-20 | 2022-01-20 | Flue of converter waste heat boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217103959U (en) |
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2022
- 2022-01-20 CN CN202220153150.6U patent/CN217103959U/en active Active
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