CN112683074A - Top-blown furnace spray gun and special maintenance method thereof - Google Patents
Top-blown furnace spray gun and special maintenance method thereof Download PDFInfo
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- CN112683074A CN112683074A CN202011485329.3A CN202011485329A CN112683074A CN 112683074 A CN112683074 A CN 112683074A CN 202011485329 A CN202011485329 A CN 202011485329A CN 112683074 A CN112683074 A CN 112683074A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a top-blowing furnace spray gun and a special maintenance method thereof, and the top-blowing furnace spray gun comprises a first outer sleeve, wherein a second outer sleeve is fixedly connected to the left end of the first outer sleeve, a positioning seat plate is fixedly installed on the left side of the outer surface of the second outer sleeve, a sleeve air pipe fitting is arranged in the middle of the left end of the positioning seat plate, a process air pipe fitting is arranged at the left end of the sleeve air pipe fitting, an oxygen pipe fitting is arranged at the left end of the process air pipe fitting, a natural gas fitting is arranged at the left end of the oxygen pipe fitting, a hoisting shell is fixedly installed at the left part of the natural gas fitting, and a plurality of swirl vanes are fixedly installed at the right part of the inner wall of. According to the top-blown converter spray gun and the special maintenance method thereof, natural gas is used as fuel, so that the use cost of the spray gun is reduced, and the capacity and yield of an enterprise are improved; the raw materials, the fuel and the like can be effectively diffused and atomized in the molten pool; the special maintenance of the spray gun can be realized, and the production cost is saved.
Description
Technical Field
The invention relates to the technical field of spray guns, in particular to a top-blown converter spray gun and a special maintenance method thereof.
Background
The spray gun is a key part of a top-blown molten pool smelting furnace. During production, the spray gun is required to descend and be inserted into a high-temperature molten pool in the furnace, fuel, air or oxygen-enriched air is sprayed into the furnace and plays a role in stirring the molten pool, and the spray gun is required to be lifted out of the furnace when production is finished or the furnace is emergently stopped. The existing top-blown furnace spray gun has the following problems in the using process: 1. the existing spray gun mostly uses heavy oil or pulverized coal as fuel, and is greatly limited in manufacturing process and technical requirements; 2. the existing spray gun can not effectively diffuse and atomize the sprayed raw materials and fuel in the molten pool, and can not play a good role in stirring; 3. when the existing top-blown converter spray gun is damaged in a period of use, the damaged spray gun of the top-blown converter is directly replaced, and the spray gun of the top-blown converter cannot be maintained, so that the production cost is increased.
Disclosure of Invention
The invention mainly aims to provide a top-blown converter spray gun and a special maintenance method thereof, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a top-blowing furnace spray gun comprises an outer sleeve, wherein the left end of the outer sleeve is fixedly connected with a second outer sleeve, the left side of the outer surface of the second outer sleeve is fixedly provided with a positioning seat plate, the right end of the positioning seat plate is fixedly provided with a sleeve ring, the middle part of the left end of the positioning seat plate is provided with a sleeve air pipe fitting, the left end of the sleeve air pipe fitting is provided with a process air pipe fitting, the left end of the process air pipe fitting is provided with an oxygen pipe fitting, the left end of the oxygen pipe fitting is provided with a natural gas fitting, the left part of the natural gas fitting is fixedly provided with a hoisting shell, the left end of the hoisting shell is fixedly provided with a hoisting hook, the right end of the natural gas fitting penetrates through the middle part of the oxygen pipe fitting and extends to the right side of the oxygen pipe fitting, the right end of the oxygen pipe fitting penetrates through the middle part of the process air pipe fitting, the inside of, the natural gas spare and the oxygen pipe fitting between threaded connection have a plurality of fastening screw No. four, threaded connection has a plurality of fastening screw No. three between oxygen pipe fitting and the technology tuber pipe spare, threaded connection has a plurality of fastening screw No. two between technology tuber pipe fitting and the sleeve tuber pipe spare, threaded connection has a plurality of fastening screw No. one between sleeve tuber pipe spare and the location bedplate, the equal fixed mounting in oxygen pipe fitting inner wall right part and technology tuber pipe spare inner wall right part has a plurality of whirl blades.
Preferably, the natural gas spare includes natural gas conveying pipe, natural gas conveying pipe upper end right part fixedly connected with natural gas line, natural gas conveying pipe left end fixed mounting has the flame detector, natural gas pipe right-hand member fixed mounting has the natural gas nozzle, natural gas conveying pipe surface left part fixed mounting has the ring flange No. one, and the ring flange is located natural gas line right-hand.
Preferably, the upper end of the natural gas pipeline penetrates through the upper part of the hoisting shell, and the flame detector is positioned inside the hoisting shell.
Preferably, the oxygen pipe fitting includes No. two ring flanges, No. two ring flange right-hand member fixed mounting have oxygen delivery pipe, oxygen delivery pipe right-hand member fixed mounting has No. three ring flanges, interior sleeve pipe of No. three ring flange right-hand member fixedly connected with, oxygen delivery pipe surface middle part fixed mounting has oxygen pipeline, and the natural gas delivery pipe right-hand member runs through oxygen pipeline middle part, contactless between oxygen pipeline and the natural gas delivery pipe, through a plurality of fastening screw threaded connection between No. two ring flanges and the ring flange.
Preferably, the technology tuber pipe spare includes No. five ring flanges, No. five ring flange right-hand member fixed mounting have a transport tuber pipe, No. one transport tuber pipe right-hand member fixed mounting has No. three ring flanges, No. three flange dish right end fixedly connected with sleeve pipes No. two, No. one transport tuber pipe surface middle part fixed mounting has an air duct, No. two interior sleeve pipes cup joint in sleeve pipe outside No. one, and No. two interior sleeve pipes and interior sleeve pipe between contactless, through a plurality of fastening screw threaded connection No. three between No. five ring flanges and No. three ring flanges.
Preferably, the sleeve air pipe fitting comprises a sixth flange plate, a second conveying air pipe is fixedly connected to the right end of the sixth flange plate, a mounting plate is fixedly connected to the right end of the second conveying air pipe, and a second air pipeline is fixedly mounted in the middle of the outer surface of the second conveying air pipe.
Preferably, the mounting disc is located the positioning seat board left end, and passes through a plurality of fastening screw threaded connection between mounting disc and the positioning seat board, pass through a plurality of fastening screw threaded connection between No. six ring flanges and No. four ring flanges.
A special maintenance method for a top-blown furnace spray gun comprises the following steps:
step one, checking the burning loss condition of the outside of the spray gun, lifting the spray gun from a smelting furnace, and then checking the burning loss condition of the spray gun;
step two, checking the natural gas piece, namely unscrewing a plurality of fastening screws on the checked spray gun, realizing the detachment of the flange plate I and the flange plate II, holding the hoisting shell by a worker and applying a leftward pulling force, drawing the hoisting shell with the natural gas piece out of the oxygen pipe fitting, and respectively checking a natural gas nozzle, a natural gas conveying pipe and a natural gas pipeline on the natural gas piece;
step three, checking the oxygen pipe fitting, namely, after the natural gas fitting in the step two is removed, screwing a plurality of third fastening screws, at the moment, realizing the separation of a third flange and a fifth flange, holding the second flange by a worker and applying a leftward pulling force to draw the oxygen pipe fitting out of the process air pipe fitting, and then respectively checking an oxygen conveying pipe, an oxygen pipeline and a first inner sleeve on the oxygen pipe fitting;
step four, checking the process air pipe fitting, namely, after the oxygen pipe fitting in the step three is disassembled, screwing a plurality of second fastening screws, realizing the disassembly of the fourth flange and the sixth flange, holding the fifth flange by a worker and applying a leftward pulling force, drawing out the process air pipe fitting from the interior of the sleeve air pipe fitting, and then respectively checking a first air pipeline, a first conveying air pipe and a second inner sleeve on the oxygen pipe fitting;
step five, checking the sleeve air pipe fitting, namely, after the process air pipe fitting in the step four is disassembled, unscrewing a plurality of first fastening screws, at the moment, disassembling the mounting disc and the positioning seat plate, and removing the sleeve air pipe fitting from the positioning seat plate by a worker holding the sixth flange plate and applying a leftward pulling force, and then respectively checking a second conveying air pipe and a second air pipe on the sleeve air pipe fitting;
step six, special maintenance of the spray gun, when the burning loss condition of the first outer sleeve, the second outer sleeve and the natural gas nozzle of the spray gun occurs, the spray gun is judged to be in a small maintenance grade, the spray gun is maintained on site, the damaged first outer sleeve, second outer sleeve and the natural gas nozzle are replaced, when the burning loss and the deformation of the natural gas conveying pipe, the natural gas nozzle, the natural gas pipeline, the oxygen conveying pipe, the oxygen pipeline, the first inner sleeve pipe, the first air pipeline, the first conveying air pipe, the second inner sleeve pipe, the second conveying air pipe, the second air pipeline and the internal structure are in large degree, the spray gun is judged to be in a middle maintenance grade, parts of the gun barrel, the swirl vanes and the natural gas nozzle need to be re-corrected and replaced, the spray gun is conveyed to a maintenance plant part to be repaired and renovated, and when the natural gas conveying pipe, the natural gas nozzle, the natural gas pipeline, the oxygen conveying pipe and the natural, When the first inner sleeve, the first air pipeline, the first air conveying pipe, the second inner sleeve, the second air conveying pipe, the second air pipeline and the internal structure are seriously deformed and bent and damaged, the spray gun is judged to be maintained and maintained for overhaul, the damaged spray gun is transported to a repair plant to be integrally disassembled and repaired, and a brand new state is obtained after the seriously damaged part needs to be integrally replaced.
Compared with the prior art, the invention has the following beneficial effects:
1. in the invention, natural gas is conveyed into the natural gas pipeline and is conveyed by the natural gas conveying pipe, so that the natural gas is sprayed out from the natural gas nozzle, compared with the traditional spray gun taking heavy oil or pulverized coal as fuel, the manufacturing process and the technical requirements are greatly improved, the production cycle of the spray gun in the molten pool is prolonged from the previous 7-15 days to the current 30-40 days, the use cost of the spray gun is reduced, and the capacity and the yield of enterprises are also improved.
2. In the invention, the right part of the inner wall of the oxygen pipe fitting and the right part of the inner wall of the process air pipe fitting are provided with the plurality of swirl vanes, so that the plurality of swirl vanes can uniformly and regularly twist the spray gun in the high-temperature molten bath through the rotation of the process air, and raw materials, fuels and the like can be effectively diffused and atomized in the molten bath.
3. According to the invention, the natural gas piece, the oxygen pipe piece, the process air pipe piece and the sleeve air pipe piece are respectively disassembled and checked through the plurality of fastening screws, and the maintenance grade of the spray gun is judged according to the damage conditions of the sleeve and the internal structure of the spray gun, so that the special maintenance of the spray gun is realized, the direct replacement of the damaged spray gun of the top-blown converter is avoided, and the production cost is saved.
Drawings
FIG. 1 is an overall structural view of a top-blown lance and a special maintenance method thereof according to the present invention;
FIG. 2 is a schematic view of the internal structure of a top-blown lance and a special maintenance method thereof according to the present invention;
FIG. 3 is a schematic structural view of a natural gas component of a top-blown lance and a special maintenance method thereof according to the present invention;
FIG. 4 is a schematic structural view of an oxygen pipe of a top-blown lance and a special maintenance method thereof according to the present invention;
FIG. 5 is a schematic structural view of a process air pipe fitting of a top-blown lance and a special maintenance method thereof according to the present invention;
FIG. 6 is a schematic view of the connection between the sleeve air pipe fitting and the positioning seat plate of the top-blown lance and the special maintenance method thereof.
In the figure: 1. a collar; 2. a first outer sleeve; 3. a natural gas component; 4. an oxygen tube; 5. a second outer sleeve; 6. a process air pipe fitting; 7. a sleeve air pipe fitting; 8. positioning the seat plate; 9. hoisting the shell; 10. hoisting hooks; 11. a first fastening screw; 12. a second fastening screw; 13. a third fastening screw; 14. a fourth fastening screw; 15. a swirl vane; 31. a natural gas delivery pipe; 32. a natural gas pipeline; 33. a flame detector; 34. a first flange plate; 35. a natural gas nozzle; 41. a second flange plate; 42. an oxygen pipeline; 43. a third flange plate; 44. an oxygen delivery pipe; 45. a first inner sleeve; 61. a fourth flange plate; 62. a first conveying air pipe; 63. a first air duct; 64. a second inner sleeve; 65. a fifth flange plate; 71. a sixth flange plate; 72. a second conveying air pipe; 73. a second air duct; 74. and (7) mounting a disc.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in figures 1-6, a top-blown furnace spray gun comprises a first outer sleeve 2, a second outer sleeve 5 is fixedly connected to the left end of the first outer sleeve 2, a positioning seat plate 8 is fixedly installed on the left side of the outer surface of the second outer sleeve 5, a lantern ring 1 is fixedly installed at the right end of the positioning seat plate 8, a sleeve air pipe fitting 7 is arranged in the middle of the left end of the positioning seat plate 8, a process air pipe fitting 6 is arranged at the left end of the sleeve air pipe fitting 7, an oxygen pipe fitting 4 is arranged at the left end of the process air pipe fitting 6, a natural gas fitting 3 is arranged at the left end of the oxygen pipe fitting 4, a hoisting shell 9 is fixedly installed at the left end of the natural gas fitting 3, a hoisting hook 10 is fixedly installed at the left end of the hoisting shell 9, the right end of the natural gas fitting 3 penetrates through the middle of the oxygen pipe fitting 4 and extends to the right of the oxygen pipe fitting 4, the right end of the process air pipe fitting 4 penetrates through the middle of the process, there are a plurality of fastening screws 14 No. four in threaded connection between natural gas spare 3 and the oxygen pipe fitting 4, threaded connection has a plurality of fastening screws 13 No. three between oxygen pipe fitting 4 and the technology tuber pipe spare 6, threaded connection has a plurality of fastening screws 12 No. two between technology tuber pipe spare 6 and the sleeve tuber pipe spare 7, threaded connection has a plurality of fastening screws 11 No. one between sleeve tuber pipe spare 7 and the location bedplate 8, there are a plurality of whirl blades 15 in the equal fixed mounting in oxygen pipe fitting 4 inner wall right part and the technology tuber pipe spare 6 inner wall right part.
The natural gas piece 3 comprises a natural gas conveying pipe 31, the right part of the upper end of the natural gas conveying pipe 31 is fixedly connected with a natural gas pipeline 32, the left end of the natural gas conveying pipe 31 is fixedly provided with a flame detector 33, the right end of the natural gas pipeline 32 is fixedly provided with a natural gas nozzle 35, the left part of the outer surface of the natural gas conveying pipe 31 is fixedly provided with a first flange 34, and the first flange 34 is positioned on the right side of the natural gas pipeline 32; the upper end of the natural gas pipeline 32 penetrates through the upper part of the hoisting shell 9, the flame detector 33 is positioned inside the hoisting shell 9, natural gas is used as main fuel inside the natural gas conveying pipe 31, and compared with a spray gun using heavy oil or pulverized coal as fuel, the natural gas conveying pipe has great improvement on manufacturing process and technical requirements; the oxygen pipe fitting 4 comprises a second flange plate 41, an oxygen conveying pipe 44 is fixedly installed at the right end of the second flange plate 41, a third flange plate 43 is fixedly installed at the right end of the oxygen conveying pipe 44, a first inner sleeve 45 is fixedly connected to the right end of the third flange plate 43, an oxygen pipeline 42 is fixedly installed in the middle of the outer surface of the oxygen conveying pipe 44, the right end of the natural gas conveying pipe 31 penetrates through the middle of the oxygen pipeline 42, the oxygen pipeline 42 is not in contact with the natural gas conveying pipe 31, the second flange plate 41 is in threaded connection with the first flange plate 34 through a plurality of fourth fastening screws 14, and the oxygen conveying; the process air pipe fitting 6 comprises a fifth flange 65, a first conveying air pipe 62 is fixedly mounted at the right end of the fifth flange 65, a third flange 43 is fixedly mounted at the right end of the first conveying air pipe 62, a second inner sleeve 64 is fixedly connected at the right end of the third flange 43, a first air pipeline 63 is fixedly mounted in the middle of the outer surface of the first conveying air pipe 62, the second inner sleeve 64 is sleeved outside the first inner sleeve 45, the second inner sleeve 64 is not in contact with the first inner sleeve 45, the fifth flange 65 is in threaded connection with the third flange 43 through a plurality of third fastening screws 13, and the process air pipe fitting 6 plays a role in assisting oxygen smelting and protecting the outlet of the gun barrel; the sleeve air pipe fitting 7 comprises a sixth flange 71, the right end of the sixth flange 71 is fixedly connected with a second conveying air pipe 72, the right end of the second conveying air pipe 72 is fixedly connected with a mounting plate 74, a second air pipeline 73 is fixedly mounted in the middle of the outer surface of the second conveying air pipe 72, and the sleeve air pipe fitting 7 plays a role in cooling a gun barrel and generating negative pressure to reduce smoke emission; in order to realize the installation and connection of the sleeve air pipe fitting 7, the installation disc 74 is positioned at the left end of the positioning seat plate 8, the installation disc 74 is in threaded connection with the positioning seat plate 8 through a plurality of first fastening screws 11, and the sixth flange 71 is in threaded connection with the fourth flange 61 through a plurality of second fastening screws 12.
A special maintenance method for a top-blown furnace spray gun comprises the following steps:
step one, checking the burning loss condition of the outside of the spray gun, lifting the spray gun from a smelting furnace, and then checking the burning loss condition of the spray gun;
step two, checking the natural gas piece 3, namely unscrewing a plurality of four fastening screws 14 on the checked spray gun, wherein the first flange plate 34 and the second flange plate 41 are separated, a worker holds the hoisting shell 9 and applies a leftward pulling force to draw the hoisting shell 9 with the natural gas piece 3 out of the oxygen pipe fitting 4, and respectively checking a natural gas nozzle 35, a natural gas conveying pipe 31 and a natural gas pipeline 32 on the natural gas piece 3;
step three, checking the oxygen pipe fitting 4, namely, after the natural gas fitting 3 in the step two is removed, unscrewing a plurality of third fastening screws 13, at the moment, realizing the detachment of a third flange 43 and a fifth flange 65, holding the second flange 41 by a worker and applying a leftward pulling force, drawing the oxygen pipe fitting 4 out of the process air pipe fitting 6, and then respectively checking an oxygen conveying pipe 44, an oxygen pipeline 42 and a first inner sleeve 45 on the oxygen pipe fitting 4;
step four, checking the process air pipe fitting 6, namely, after the oxygen pipe fitting 4 in the step three is disassembled, screwing a plurality of second fastening screws 12, at the moment, disassembling the fourth flange 61 and the sixth flange 71, holding the fifth flange 65 by a worker and applying a leftward pulling force, drawing the process air pipe fitting 6 out of the sleeve air pipe fitting 7, and then respectively checking the first air pipeline 63, the first conveying air pipe 62 and the second inner sleeve 64 on the oxygen pipe fitting 4;
step five, inspecting the sleeve air pipe piece 7, namely, after the process air pipe piece 6 in the step four is disassembled, unscrewing a plurality of first fastening screws 11, at the moment, disassembling the mounting disc 74 and the positioning seat plate 8, holding the sixth flange 71 by a worker and applying a leftward pulling force, disassembling the sleeve air pipe piece 7 from the positioning seat plate 8, and then respectively inspecting a second conveying air pipe 72 and a second air pipe 73 on the sleeve air pipe piece 7;
sixthly, performing special maintenance on the spray gun, when the first outer sleeve 2, the second outer sleeve 5 and the natural gas nozzle 35 of the spray gun are burnt, judging the spray gun to be in a small maintenance grade, performing on-site maintenance on the spray gun, replacing the damaged first outer sleeve 2, second outer sleeve 5 and natural gas nozzle 35, judging the spray gun to be in a medium maintenance grade when the natural gas conveying pipe 31, the natural gas nozzle 35, the natural gas pipeline 32, the oxygen conveying pipe 44, the oxygen pipeline 42, the first inner sleeve 45, the first air pipeline 63, the first conveying air pipe 62, the second inner sleeve 64, the second conveying air pipe 72, the second air pipe 73 and the internal structure have large burning loss and deformation, and conveying the spray gun to be in a medium maintenance grade, wherein partial gun barrels, swirl vanes 15 and the natural gas nozzle 35 need to be re-corrected and replaced, and conveying the spray gun to a maintenance plant part for repairing, and repairing the natural gas conveying pipe 31, When the natural gas nozzle 35, the natural gas pipeline 32, the oxygen conveying pipe 44, the oxygen pipeline 42, the first inner sleeve 45, the first air pipeline 63, the first air conveying pipe 62, the second inner sleeve 64, the second air conveying pipe 72, the second air pipeline 73 and the internal structure are seriously deformed and bent and damaged, the spray gun is judged to be in an overhaul maintenance grade, the damaged spray gun is transported to a repair plant part to be integrally disassembled and repaired, and a brand new state is obtained after the seriously damaged parts need to be integrally replaced.
It should be noted that the invention is a top-blown furnace spray gun and its specialized maintenance method, lift the spray gun from the smelting pot at first, check the burning out situation of the spray gun, then unscrew several No. four fastening screws 14 on the spray gun after checking, the first flange 34 is realized and separated with No. two flanges 41 at this moment, the worker holds the hoisting outer casing 9 and exerts a leftward pulling force, draw the hoisting outer casing 9 with natural gas spare 3 out from the interior of oxygen pipe fitting 4, check natural gas nozzle 35, natural gas duct 31 and natural gas pipeline 32 on the natural gas spare 3 separately, after the natural gas spare 3 is dismantled, unscrew several No. three fastening screws 13, the No. three flange 43 is realized and separated with No. five flanges 65 at this moment, the worker holds No. two flanges 41 and exerts a leftward pulling force, draw the oxygen pipe fitting 4 out from the interior of the process air pipe fitting 6, then, the oxygen conveying pipe 44, the oxygen pipeline 42 and the first inner sleeve 45 on the oxygen pipe fitting 4 are respectively checked, when the oxygen pipe fitting 4 is disassembled, a plurality of second fastening screws 12 are unscrewed, at the moment, the fourth flange 61 and the sixth flange 71 are disassembled, a worker holds the fifth flange 65 and applies a leftward pulling force to draw the process air pipe fitting 6 out of the sleeve air pipe fitting 7, then the first air pipeline 63, the first conveying air pipe 62 and the second inner sleeve 64 on the oxygen pipe fitting 4 are respectively checked, when the process air pipe fitting 6 is disassembled, a plurality of first fastening screws 11 are unscrewed, at the moment, the mounting plate 74 and the positioning seat plate 8 are disassembled, the worker holds the sixth flange 71 and applies a leftward pulling force to disassemble the sleeve air pipe fitting 7 from the positioning seat plate 8, then the second conveying air pipe 72 and the second air pipe 73 on the sleeve air pipe fitting 7 are respectively checked, when the first outer sleeve 2, the second outer sleeve 5 and the natural gas nozzle 35 of the spray gun are burnt, the spray gun is maintained on site, the damaged first outer sleeve 2, the second outer sleeve 5 and the natural gas nozzle 35 are replaced, when the natural gas conveying pipe 31, the natural gas nozzle 35, the natural gas pipeline 32, the oxygen conveying pipe 44, the oxygen pipeline 42, the first inner sleeve 45, the first air pipeline 63, the first conveying air pipe 62, the second inner sleeve 64, the second conveying air pipe 72, the second air pipeline 73 and the internal structure are burnt and deformed to a large extent, parts of the gun barrel, the swirl blades 15 and the natural gas nozzle 35 need to be corrected and replaced again, the spray gun is conveyed to a plant maintenance part to be repaired and renovated, and when the natural gas conveying pipe 31, the natural gas nozzle 35, the natural gas pipeline 32, the oxygen conveying pipe 44, the oxygen pipeline 42, the first inner sleeve 45 and the first air pipeline 63 are repaired and renovated, When the first conveying air pipe 62, the second inner sleeve 64, the second conveying air pipe 72, the second air pipeline 73 and the internal structure are seriously deformed and bent, the damaged spray gun is transported to a repair plant to be integrally disassembled and repaired, and a brand new state is obtained after the seriously damaged parts need to be integrally replaced.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A top-blown furnace spray gun comprises an outer sleeve (2) and is characterized in that: the left end of the first outer sleeve (2) is fixedly connected with a second outer sleeve (5), the left side of the outer surface of the second outer sleeve (5) is fixedly provided with a positioning seat plate (8), the right end of the positioning seat plate (8) is fixedly provided with a lantern ring (1), the middle part of the left end of the positioning seat plate (8) is provided with a sleeve air pipe fitting (7), the left end of the sleeve air pipe fitting (7) is provided with an industrial air pipe fitting (6), the left end of the industrial air pipe fitting (6) is provided with an oxygen pipe fitting (4), the left end of the oxygen pipe fitting (4) is provided with a natural gas fitting (3), the left part of the natural gas fitting (3) is fixedly provided with a hoisting shell (9), the left end of the hoisting shell (9) is fixedly provided with a hoisting hook (10), the right end of the natural gas fitting (3) penetrates through the middle part of the oxygen pipe fitting (4) and extends to the right side of the oxygen pipe fitting, the technical air pipe fitting is characterized in that the technical air pipe fitting (6) sequentially penetrates through the interior of the sleeve air pipe fitting (7), the interior of the second outer sleeve (5) and the interior of the first outer sleeve (2) and extends to the right of the natural gas piece (3), a plurality of fourth fastening screws (14) are connected between the natural gas piece (3) and the oxygen pipe fitting (4), a plurality of third fastening screws (13) are connected between the oxygen pipe fitting (4) and the technical air pipe piece (6), a plurality of second fastening screws (12) are connected between the technical air pipe fitting (6) and the sleeve air pipe fitting (7), a plurality of first fastening screws (11) are connected between the sleeve air pipe fitting (7) and the positioning base plate (8), and a plurality of swirl blades (15) are fixedly installed on the right portion of the inner wall of the oxygen pipe fitting (4) and the right portion of the inner wall of the technical air pipe fitting (6).
2. A top-blown furnace lance in accordance with claim 1 wherein: natural gas spare (3) include natural gas conveying pipe (31), natural gas conveying pipe (31) upper end right part fixedly connected with natural gas line (32), natural gas conveying pipe (31) left end fixed mounting has flame detector (33), natural gas line (32) right-hand member fixed mounting has natural gas nozzle (35), natural gas conveying pipe (31) surface left part fixed mounting has flange dish (34) No. one, and flange dish (34) are located natural gas line (32) right-hand.
3. A top-blown furnace lance in accordance with claim 2 wherein: the upper end of the natural gas pipeline (32) penetrates through the upper part of the hoisting shell (9), and the flame detector (33) is positioned inside the hoisting shell (9).
4. A top-blown furnace lance in accordance with claim 1 wherein: oxygen pipe fitting (4) are including No. two ring flanges (41), No. two ring flanges (41) right-hand member fixed mounting has oxygen delivery pipe (44), oxygen delivery pipe (44) right-hand member fixed mounting has No. three ring flanges (43), interior sleeve pipe (45) of No. three ring flanges (43) right-hand member fixedly connected with, oxygen delivery pipe (44) surface middle part fixed mounting has oxygen pipeline (42), and natural gas delivery pipe (31) right-hand member runs through oxygen pipeline (42) middle part, contactless between oxygen pipeline (42) and natural gas delivery pipe (31), through No. four fastening screw (14) threaded connection between No. two ring flanges (41) and ring flange (34).
5. A top-blown furnace lance in accordance with claim 1 wherein: process tuber pipe spare (6) include No. five ring flanges (65), No. five ring flanges (65) right-hand member fixed mounting has a transport tuber pipe (62), No. one transport tuber pipe (62) right-hand member fixed mounting has No. three ring flanges (43), No. three interior sleeve pipe (64) of ring flange (43) right-hand member fixedly connected with, No. one transport tuber pipe (62) surface middle part fixed mounting has a wind pipeline (63), No. two interior sleeve pipe (64) cup joint in interior sleeve pipe (45) outside No. one, and No. two interior sleeve pipe (64) and interior sleeve pipe (45) between contactless, through No. three fastening screw (13) threaded connection between No. five ring flanges (65) and No. three ring flanges (43).
6. A top-blown furnace lance in accordance with claim 1 wherein: sleeve pipe wind pipe fitting (7) are including No. six ring flanges (71), No. six ring flanges (71) right-hand member fixedly connected with carries No. two tuber pipes (72), No. two transport tuber pipes (72) right-hand member fixedly connected with mounting disc (74), No. two transport tuber pipes (72) surface middle part fixed mounting has No. two wind pipeline (73).
7. A top-blown lance in accordance with claim 6 wherein: the mounting disc (74) is located the left end of the positioning seat plate (8), the mounting disc (74) is in threaded connection with the positioning seat plate (8) through a plurality of first fastening screws (11), and the sixth flange plate (71) is in threaded connection with the fourth flange plate (61) through a plurality of second fastening screws (12).
8. A method of repairing a top-blown lance in accordance with claims 1 to 7, wherein: the method comprises the following steps:
step one, checking the burning loss condition of the outside of the spray gun, lifting the spray gun from a smelting furnace, and then checking the burning loss condition of the spray gun;
step two, checking the natural gas piece (3), namely unscrewing a plurality of four fastening screws (14) on the checked spray gun, at the moment, splitting the first flange plate (34) and the second flange plate (41), holding the hoisting shell (9) by a worker and applying a leftward pulling force, drawing the hoisting shell (9) with the natural gas piece (3) out of the oxygen pipe (4), and respectively checking a natural gas nozzle (35), a natural gas conveying pipe (31) and a natural gas pipeline (32) on the natural gas piece (3);
step three, checking the oxygen pipe fitting (4), namely unscrewing a plurality of third fastening screws (13) after the natural gas fitting (3) in the step two is detached, at the moment, splitting the third flange (43) and the fifth flange (65), holding the second flange (41) by a worker and applying a leftward pulling force to draw the oxygen pipe fitting (4) out of the process air pipe fitting (6), and then checking an oxygen conveying pipe (44), an oxygen pipeline (42) and a first inner sleeve (45) on the oxygen pipe fitting (4) respectively;
step four, checking the process air pipe fitting (6), namely, after the oxygen pipe fitting (4) in the step three is disassembled, unscrewing a plurality of second fastening screws (12), at the moment, disassembling the fourth flange (61) and the sixth flange (71), holding the fifth flange (65) by a worker and applying a leftward pulling force, drawing the process air pipe fitting (6) out of the sleeve air pipe fitting (7), and checking a first air pipeline (63), a first conveying air pipe (62) and a second inner sleeve (64) on the oxygen pipe fitting (4) respectively;
fifthly, inspecting the sleeve air pipe fitting (7), namely unscrewing a plurality of first fastening screws (11) after the process air pipe fitting (6) in the fourth step is disassembled, detaching the mounting disc (74) and the positioning seat plate (8) at the moment, holding the sixth flange plate (71) by a worker and applying a leftward pulling force, disassembling the sleeve air pipe fitting (7) from the positioning seat plate (8), and respectively inspecting a second conveying air pipe (72) and a second air pipeline (73) on the sleeve air pipe fitting (7);
step six, special maintenance of the spray gun, when the burning loss condition of the first outer sleeve (2), the second outer sleeve (5) and the natural gas nozzle (35) of the spray gun occurs, the spray gun is judged to be in a small maintenance grade, the spray gun is maintained on site, the damaged first outer sleeve (2), second outer sleeve (5) and the natural gas nozzle (35) are replaced, when the natural gas conveying pipe (31), the natural gas nozzle (35), the natural gas pipeline (32), the oxygen conveying pipe (44), the oxygen pipeline (42), the first inner sleeve (45), the first air pipeline (63), the first conveying air pipe (62), the second inner sleeve (64), the second conveying air pipe (72), the second air pipeline (73) and the internal structure have large burning loss and deformation, the spray gun is judged to be in a medium maintenance grade, and partial barrel, the swirl vanes (15) and the natural gas nozzle (35) need to be re-corrected and replaced, and the spray gun is transported to a maintenance plant to be repaired and renovated, when the natural gas transport pipe (31), the natural gas nozzle (35), the natural gas pipeline (32), the oxygen transport pipe (44), the oxygen pipeline (42), the first inner sleeve pipe (45), the first air pipeline (63), the first air transport pipe (62), the second inner sleeve pipe (64), the second air transport pipe (72), the second air pipeline (73) and the internal structure are seriously deformed and bent and damaged, the spray gun is judged to be in an overhauled maintenance grade, the damaged spray gun is transported to the maintenance plant to be integrally disassembled and repaired, and a brand new state is obtained after the seriously damaged part needs to be integrally replaced.
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| CN202011485329.3A CN112683074A (en) | 2020-12-16 | 2020-12-16 | Top-blown furnace spray gun and special maintenance method thereof |
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| US6355205B1 (en) * | 1999-05-21 | 2002-03-12 | Kawasaki Steel Corporation | Multi-function lance for a vacuum degassing chamber and a method of using the same |
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| CN203517796U (en) * | 2013-09-16 | 2014-04-02 | 广西有色再生金属有限公司 | Oxygen-enriched combustor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1196892A (en) * | 1969-01-01 | 1970-07-01 | Nippon Kokan Kk | Burner Nozzle. |
| GB1598740A (en) * | 1977-05-09 | 1981-09-23 | Pullman Berry Co | Oxygen lance assembly |
| US6245285B1 (en) * | 1996-07-12 | 2001-06-12 | Technological Resources Pty. Ltd. | Top injection lance |
| US6355205B1 (en) * | 1999-05-21 | 2002-03-12 | Kawasaki Steel Corporation | Multi-function lance for a vacuum degassing chamber and a method of using the same |
| CN203190411U (en) * | 2012-12-12 | 2013-09-11 | 江西中船航海仪器有限公司 | Combined gas burner |
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