CN109777909B - Reducing joint for flue of steel-making furnace - Google Patents
Reducing joint for flue of steel-making furnace Download PDFInfo
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- CN109777909B CN109777909B CN201910163762.6A CN201910163762A CN109777909B CN 109777909 B CN109777909 B CN 109777909B CN 201910163762 A CN201910163762 A CN 201910163762A CN 109777909 B CN109777909 B CN 109777909B
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Abstract
The invention discloses a reducing joint for a steel-making furnace flue, and relates to the technical field of steel-making equipment. The technical key points are as follows: the utility model provides a steelmaking furnace flue reducing joint, is including being the annular around the cooling tube of establishing, the one end of cooling tube forms circular opening, and its other end forms square opening, the cooling tube is located circular open-ended periphery side and is provided with annular connecting plate, the cooling tube is located square open-ended periphery side and is provided with square connecting plate, the cooling tube passes through welded seal around establishing the gap that forms. The invention has the advantages of prolonging the service life of the joint, saving energy and protecting environment.
Description
Technical Field
The invention relates to the technical field of steelmaking equipment, in particular to a reducing joint of a steelmaking furnace flue.
Background
The steel smelting furnace is equipment for smelting steel, can produce a large amount of high temperature waste gas in the steelmaking process, and steel smelting furnace is last generally to be provided with the tubular blast pipe of circle, and the exhaust flue in the mill is generally square, consequently needs the reducing joint to connect circular blast pipe and square exhaust flue.
Chinese utility model patent that bulletin number is CN205420469U discloses a steelmaking converter reducing vaporization flue that dust removal effect is showing, including activity petticoat pipe, I section flue, II section flues, III section flues, activity petticoat pipe and I section flue, II section flues and III section flues be connected gradually in proper order, and the diameter of I section flue is greater than the diameter of II section flues, or the diameter of I section flue and II section flues is greater than the diameter of III section flues.
The reducing vaporization flue in the patent is all circular, consequently can not be applicable to the needs that square and circular reducing are connected, has among the prior art to adopt the steel sheet welding to form the square reducing joint of the circular one end in one end, but, the steel sheet inner wall receives the erosion of high temperature flue gas for a long time, and easy emergence is embrittled, leads to the life-span shorter.
Disclosure of Invention
The invention aims to provide a reducing joint of a steelmaking furnace flue, which has the advantage of prolonging the service life of the joint.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a steelmaking furnace flue reducing joint, is including being the annular around the cooling tube of establishing, the one end of cooling tube forms circular opening, and its other end forms square opening, the cooling tube is located circular open-ended periphery side and is provided with annular connecting plate, the cooling tube is located square open-ended periphery side and is provided with square connecting plate, the cooling tube passes through welded seal around establishing the gap that forms.
By adopting the technical scheme, the circular connecting plate of the reducing joint is connected with the steel making furnace, the square connecting plate of the reducing joint is communicated with the external exhaust flue, and when smoke of the steel making furnace passes through the reducing joint, cooling water circularly flows in the cooling pipe, so that on one hand, the temperature of the cooling pipe is reduced, the cooling pipe is prevented from being corroded by high temperature for a long time, and the service life of the reducing joint is prolonged; on the other hand, the cooling water absorbs the heat of the high-temperature flue gas and then becomes hot steam, and the hot steam can be recycled, so that the energy is saved and the environment is protected.
Further, the cooling pipe includes middle part cold water pipe and tip cold water pipe, middle part cold water pipe is snakelike winding and establishes, tip cold water pipe is including main cold pipe and the connecting pipe that is located middle part cold water pipe both ends, main cold pipe is snakelike winding and establishes, the both ends of connecting pipe communicate with two main cold pipes respectively, middle part cold water pipe and tip cold water pipe form vertical cavity around forming between the elbow established, the connecting pipe is located the cavity.
Through adopting above-mentioned technical scheme, because the length of reducer union's cooling tube is longer, the cooling water flows very high when half section, has hardly continued the heat absorption again, and the cooling effect remains to be improved, consequently, adopts two pipelines of middle part cold water pipe and tip cold water pipe to cool off, and the cooling water all can absorb heat at the in-process homoenergetic that flows through the cooling tube, reinforcing cooling effect, further extension reducer union's life-span.
Furthermore, water inlet connecting pipes extending outwards are arranged at the water inlet ends of the middle cold water pipe and the end cold water pipe, and water inlet pipes are communicated with one ends of the two water inlet connecting pipes, which are far away from the middle cold water pipe;
and water outlet connecting pipes extending outwards are arranged at the water outlet ends of the middle cold water pipe and the end cold water pipe, and one ends of the two water outlet connecting pipes, far away from the middle cold water pipe, are communicated with a water outlet pipe.
Through adopting above-mentioned technical scheme, a water inlet pipe and a outlet pipe of middle part cold water pipe and tip cold water pipe sharing reduce pipeline quantity, processing and simple to operate.
Furthermore, the axes of the water inlet pipe and the water outlet pipe are parallel to the axis of the reducer union, and angle steel is arranged among the water inlet pipe, the water outlet pipe and the outer wall of the cooling pipe.
Through adopting above-mentioned technical scheme, because the water pressure of inlet tube and outlet pipe is great, the angle steel can strengthen the structural strength and the connection stability of inlet tube and outlet pipe and cooling tube, avoids inlet tube and outlet pipe to warp or fracture, prolongs reducer union's life-span.
Furthermore, the one end that square connecting plate was kept away from to the annular connecting plate outwards extends and is provided with the annular mounting panel, the one end that square connecting plate was kept away from to the square connecting plate outwards extends and is provided with square mounting panel, all seted up a plurality of mounting holes on annular mounting panel and the square mounting panel.
Through adopting above-mentioned technical scheme, set up mounting panel and mounting hole, easy to assemble.
Furthermore, the one side that square mounting panel was kept away from to annular mounting panel is provided with the annular flange, the one side that annular mounting panel was kept away from to square mounting panel is provided with square flange.
By adopting the technical scheme, the annular flange and the square flange play a sealing role during butt joint installation.
Furthermore, a plurality of reinforcing plates are arranged between the annular connecting plate and the annular mounting plate and between the square connecting plate and the square mounting plate.
Through adopting above-mentioned technical scheme, the reinforcing plate can strengthen joint strength, avoids annular mounting panel and square mounting panel to warp.
Furthermore, a plurality of lifting lugs are fixedly connected to the outer walls of the annular connecting plate and the square connecting plate.
By adopting the technical scheme, the lifting lug is convenient to hoist in the transportation and installation process because the reducer union is large in size and heavy in weight.
Compared with the prior art, the invention has the beneficial effects that:
(1) the reducing joint is formed by bending the cooling pipe, so that when cooling water circularly flows in the cooling pipe, on one hand, the temperature of the cooling pipe is reduced, the cooling pipe is prevented from being corroded by high temperature for a long time, and the service life of the reducing joint is prolonged; on the other hand, the cooling water absorbs the heat of the high-temperature flue gas and then is changed into hot steam, and the hot steam can be recycled, so that the energy is saved and the environment is protected;
(2) two pipelines, namely a middle cold water pipe and an end cold water pipe, are adopted for cooling, so that cooling water can absorb heat in the process of flowing through the cooling pipes, the cooling effect is enhanced, and the service life of the reducer union is prolonged;
(3) through setting up angle steel and reinforcing plate, the angle steel can strengthen the structural strength and the connection stability of inlet tube and outlet pipe and cooling tube, avoids inlet tube and outlet pipe to warp or fracture, and the reinforcing plate can strengthen joint strength, avoids annular mounting panel and square mounting panel to warp, extension reducer union's life-span.
Drawings
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic view of the cooling tube of the present invention after being unfolded.
Reference numerals: 1. a cooling tube; 101. a middle cold water pipe; 102. an end cold water pipe; 1021. a primary cooling pipe; 1022. a connecting pipe; 2. a circular opening; 3. a square opening; 4. an annular connecting plate; 5. a square connecting plate; 6. a cavity; 7. a water inlet connecting pipe; 8. a water inlet pipe; 9. a water outlet connecting pipe; 10. a water outlet pipe; 11. angle steel; 12. an annular mounting plate; 13. a square mounting plate; 14. mounting holes; 15. an annular flange; 16. a square flange; 17. a reinforcing plate; 18. and (7) lifting lugs.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in fig. 1 and 3, the flue reducer union for the steelmaking furnace comprises a cooling pipe 1 which is annularly wound by a plurality of rings, the cooling pipe 1 is made of a 20G boiler pipe, a circular opening 2 is formed at one end of the cooling pipe 1, a square opening 3 is formed at the other end of the cooling pipe, an annular connecting plate 4 is welded on the outer peripheral side of the cooling pipe 1, which is located at the circular opening 2, and a square connecting plate 5 is welded on the outer peripheral side of the cooling pipe 1, which is located at the square opening 3. When the flue gas of the steel making furnace passes through the reducing joint, cooling water circularly flows in the cooling pipe 1, so that on one hand, the temperature of the cooling pipe 1 is reduced, and the service life of the reducing joint is prolonged; on the other hand, the cooling water absorbs the heat of the high-temperature flue gas and then becomes hot steam, and the hot steam can be recycled, so that the energy is saved and the environment is protected.
As shown in fig. 1 and 4, since the length of the cooling pipe 1 of the reducer joint is long, the temperature of the cooling water flowing to the latter half is high, and it is difficult to continue heat absorption. Therefore, cooling pipe 1 includes middle part cold water pipe 101 and tip cold water pipe 102, middle part cold water pipe 101 is snakelike winding and establishes, tip cold water pipe 102 is including the main cold pipe 1021 and the connecting pipe 1022 that are located middle part cold water pipe 101 both ends, main cold pipe 1021 is snakelike winding and establishes, the both ends of connecting pipe 1022 communicate with two main cold pipes 1021 respectively, middle part cold water pipe 101 and tip cold water pipe 102 form vertical cavity 6 around between the elbow of establishing, connecting pipe 1022 is located cavity 6, middle part cold water pipe 101 and tip cold water pipe 102 seal through the welding mode around establishing the gap that forms. The water inlets and the water outlets of the middle cold water pipe 101 and the end cold water pipe 102 are on the same side, the water inlet of the middle cold water pipe 101 is arranged at the lower right side, the water outlet of the middle cold water pipe 101 is arranged at the upper right side, the water inlet of the end cold water pipe 102 is arranged at the upper left side, and the water outlet of the end cold water pipe 102 is arranged at the lower left side. Two pipelines, namely a middle cold water pipe 101 and an end cold water pipe 102, are adopted for cooling, cooling water can absorb heat in the process of flowing through the cooling pipe 1, the cooling effect is enhanced, and the service life of the reducer union is further prolonged.
As shown in fig. 1 and 2, water inlet ends of the middle cold water pipe 101 and the end cold water pipe 102 are both welded with water inlet connecting pipes 7 extending outwards, and one ends of the two water inlet connecting pipes 7 far away from the middle cold water pipe 101 are communicated with water inlet pipes 8; the water outlet ends of the middle cold water pipe 101 and the end cold water pipe 102 are both provided with water outlet connecting pipes 9 extending outwards, and the ends of the two water outlet connecting pipes 9 far away from the middle cold water pipe 101 are communicated with a water outlet pipe 10. The middle cold water pipe 101 and the end cold water pipe 102 share one water inlet pipe 8 and one water outlet pipe 10, so that the number of pipelines is reduced, and the processing and the installation are convenient.
Because the water pressure of inlet tube 8 and outlet pipe 10 is great, the axis of inlet tube 8 and outlet pipe 10 is parallel with reducer union's axis, and all the welding has angle steel 11 between inlet tube 8, outlet pipe 10 and the cooling tube 1 outer wall, and angle steel 11 can strengthen inlet tube 8 and outlet pipe 10 and cooling tube 1's structural strength and connection stability, extension reducer union's life-span.
As shown in fig. 1 and fig. 3, one end of the annular connecting plate 4, which is far away from the square connecting plate 5, extends outwards to form an integrally formed annular mounting plate 12, one end of the square connecting plate 5, which is far away from the annular connecting plate 4, extends outwards to form an integrally formed square mounting plate 13, and a plurality of mounting holes 14 which are arranged at equal intervals are formed in the annular mounting plate 12 and the square mounting plate 13, so that the installation is convenient. The annular flange 15 is integrally formed on one surface, away from the square mounting plate 13, of the annular mounting plate 12, the square flange 16 is integrally formed on one surface, away from the square mounting plate 12, of the square mounting plate 13, and the annular flange 15 and the square flange 16 play a role in sealing during butt joint installation.
A plurality of reinforcing plates 17 which are arranged at equal intervals are welded between the annular connecting plate 4 and the annular mounting plate 12 and between the square connecting plate 5 and the square mounting plate 13. The outer walls of the annular connecting plate 4 and the square connecting plate 5 are all welded with a plurality of lifting lugs 18 which are arranged at equal intervals, and the lifting lugs 18 are convenient to hoist in the transportation and installation process.
The working process and the beneficial effects of the invention are as follows:
when the high-temperature flue gas passes through the reducing joint, cooling water flows through the water inlet connecting pipe 7 from the water inlet pipe 8, enters the middle cold water pipe 101 and the end cold water pipe 102 respectively, and then flows to the water outlet pipe 10 from the water outlet connecting pipe 9. On one hand, the cooling water reduces the temperature of the cooling pipe 1, so that the cooling pipe is prevented from being corroded by high temperature for a long time, and the service life of the reducing joint is prolonged; on the other hand, the cooling water absorbs the heat of the high-temperature flue gas and then becomes hot steam, and the hot steam can be recycled, so that the energy is saved and the environment is protected.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (7)
1. The reducing joint for the flue of the steel making furnace is characterized by comprising a cooling pipe (1) wound in an annular shape, wherein a circular opening (2) is formed at one end of the cooling pipe (1), a square opening (3) is formed at the other end of the cooling pipe, an annular connecting plate (4) is arranged on the outer peripheral side of the cooling pipe (1) positioned at the circular opening (2), a square connecting plate (5) is arranged on the outer peripheral side of the cooling pipe (1) positioned at the square opening (3), and a gap formed by winding the cooling pipe (1) is sealed by welding;
cooling pipe (1) is including middle part cold water pipe (101) and tip cold water pipe (102), middle part cold water pipe (101) are snakelike winding and establish, tip cold water pipe (102) are including main cold pipe (1021) and connecting pipe (1022) that are located middle part cold water pipe (101) both ends, main cold pipe (1021) are snakelike winding and establish, the both ends of connecting pipe (1022) communicate with two main cold pipes (1021) respectively, middle part cold water pipe (101) and tip cold water pipe (102) are around forming vertical cavity (6) between the elbow of establishing, connecting pipe (1022) are located cavity (6).
2. The reducing joint of the steel-making furnace flue according to claim 1, wherein water inlet ends of the middle cold water pipe (101) and the end cold water pipe (102) are respectively provided with a water inlet connecting pipe (7) extending outwards, and one ends of the two water inlet connecting pipes (7) far away from the middle cold water pipe (101) are communicated with a water inlet pipe (8);
the water outlet ends of the middle cold water pipe (101) and the end cold water pipe (102) are respectively provided with a water outlet connecting pipe (9) extending outwards, and one end of each of the two water outlet connecting pipes (9) far away from the middle cold water pipe (101) is communicated with a water outlet pipe (10).
3. A reducing joint for a steel furnace flue according to claim 2, wherein the axes of the water inlet pipe (8) and the water outlet pipe (10) are parallel to the axis of the reducing joint, and angle steel (11) is arranged between the water inlet pipe (8), the water outlet pipe (10) and the outer wall of the cooling pipe (1).
4. A reducing joint for a flue of a steel furnace as claimed in claim 1, wherein an annular mounting plate (12) is extended outwards from one end of the annular connecting plate (4) far away from the square connecting plate (5), a square mounting plate (13) is extended outwards from one end of the square connecting plate (5) far away from the annular connecting plate (4), and a plurality of mounting holes (14) are formed in the annular mounting plate (12) and the square mounting plate (13).
5. A reducing joint for a flue of a steel furnace as claimed in claim 4, wherein the side of the annular mounting plate (12) away from the square mounting plate (13) is provided with an annular flange (15), and the side of the square mounting plate (13) away from the annular mounting plate (12) is provided with a square flange (16).
6. A reducing joint for a steel furnace flue according to claim 4, wherein a plurality of reinforcing plates (17) are arranged between the annular connecting plate (4) and the annular mounting plate (12) and between the square connecting plate (5) and the square mounting plate (13).
7. A reducing joint for a flue of a steel furnace according to claim 1, wherein the outer walls of the annular connecting plate (4) and the square connecting plate (5) are fixedly connected with a plurality of lifting lugs (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910163762.6A CN109777909B (en) | 2019-03-05 | 2019-03-05 | Reducing joint for flue of steel-making furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910163762.6A CN109777909B (en) | 2019-03-05 | 2019-03-05 | Reducing joint for flue of steel-making furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109777909A CN109777909A (en) | 2019-05-21 |
| CN109777909B true CN109777909B (en) | 2020-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910163762.6A Active CN109777909B (en) | 2019-03-05 | 2019-03-05 | Reducing joint for flue of steel-making furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2072069C1 (en) * | 1992-10-09 | 1997-01-20 | Акционерное общество "Сибтепломаш" | Heat exchange panel |
| US20090108581A1 (en) * | 2007-10-26 | 2009-04-30 | Scripps Secured Data, Inc. Dba Holocom Networks | Flanged sleeve connector for secure conduit system |
| CN104633326A (en) * | 2013-11-10 | 2015-05-20 | 无锡新奇特钣金机械有限公司 | Pipeline connecting piece structure |
| CN203908340U (en) * | 2014-06-23 | 2014-10-29 | 范佳旭 | Water-cooled exhaust device for steel refining furnace |
| CN106499518A (en) * | 2016-11-07 | 2017-03-15 | 吉林大学 | Strengthen the bionical heat exchange surface of ribbed of cooling in a kind of combustion turbine transitory section |
| CN108800960B (en) * | 2018-06-29 | 2024-02-02 | 北京京诚科林环保科技有限公司 | Flue for cooling flue gas |
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