CN109163565B - Submerged lance and smelting equipment system - Google Patents
Submerged lance and smelting equipment system Download PDFInfo
- Publication number
- CN109163565B CN109163565B CN201811050644.6A CN201811050644A CN109163565B CN 109163565 B CN109163565 B CN 109163565B CN 201811050644 A CN201811050644 A CN 201811050644A CN 109163565 B CN109163565 B CN 109163565B
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- tube
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- telescopic
- wall
- lance
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- 238000003723 Smelting Methods 0.000 title claims abstract description 16
- 239000007921 spray Substances 0.000 claims abstract description 54
- 238000001816 cooling Methods 0.000 claims abstract description 44
- 239000011449 brick Substances 0.000 claims abstract description 41
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 239000002826 coolant Substances 0.000 description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 239000001301 oxygen Substances 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 238000009991 scouring Methods 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000007654 immersion Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/16—Introducing a fluid jet or current into the charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/16—Introducing a fluid jet or current into the charge
- F27D2003/168—Introducing a fluid jet or current into the charge through a lance
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses an immersed spray gun, which comprises a gun barrel, wherein the gun barrel comprises an outer pipe and an inner pipe, and a plurality of grooves are formed in the inner wall of the outer pipe along the axial direction; the inner tube is coaxially sleeved in the outer tube, an outer layer cooling channel is defined between the outer wall of the inner tube and the inner wall of the outer tube, and a central channel along the axial direction is defined in the inner tube. According to the immersed spray gun disclosed by the embodiment of the invention, as the outer tube of the gun tube is the main heated part, the outer layer cooling channel is defined between the inner wall of the outer tube and the outer wall of the inner tube, and a plurality of grooves are formed in the inner wall of the outer tube along the axial direction, so that the heat dissipation contact area of the inner wall of the outer tube is increased, the reinforced cooling effect of the gun tube, especially the outer tube, is greatly improved, and the spray gun material keeps higher elastic modulus and yield strength when the spray gun works in a high-temperature environment, so that the temperature of the outer tube is reduced, and the deformation, burning loss and abrasion of a muzzle and a muzzle brick of the immersed spray gun are slowed down. The invention also provides a smelting equipment system.
Description
Technical Field
The invention relates to the technical field of metallurgical smelting equipment, in particular to an immersed spray gun and a smelting equipment system.
Background
The front end of the conventional immersed spray gun is exposed to high-temperature melt, after the front end of the gun barrel is heated, the elastic modulus and the yield strength are reduced, so that the allowable stress of the material is reduced sharply, and the spray gun is deformed, burned and worn under the combined action of melt scouring and 'spray gun recoil'. Therefore, lowering the barrel service temperature is critical to improving the life of the submerged lancing.
At present, there are two modes of reducing the using temperature of the spray gun, one is to increase the flow velocity of the cooling medium, such as increasing the wind velocity of the outer layer cooling wind, and the working condition flow velocity of the cooling wind is close to the sonic velocity in the using process of the spray gun; and secondly, better cooling media such as water cooling, oil cooling and the like are adopted. By adopting the method for improving the wind speed, a better compressor and a pipeline system are required to be equipped, the energy consumption is high, and the gas at the muzzle is easy to cause more serious bubble squatting phenomenon by high-speed injection, so that the abrasion of the spray gun is increased. Water and oil cooling is currently rare in submerged lances for safety and cost reasons.
In actual production process, the part of gun barrel front end that stretches out the muzzle brick constantly reduces, and when barrel front end and rifle brick parallel and level or after embedding to the inside of rifle brick, can make the muzzle brick expose in high-speed air current and fuse-element scour environment, aggravate the wearing and tearing of muzzle brick to further aggravate the wearing and tearing of spray gun front end muzzle. In current designs, the lance barrel is typically designed to be self-consuming. Because the gun barrel is fixed structure, after the gun muzzle part of gun barrel front end wear, cause the phenomenon in the embedding muzzle brick of gun barrel front end, aggravate the wearing and tearing of muzzle brick. In summary, the prior art has the following disadvantages:
1. the method for improving the cooling intensity of the spray gun by improving the flow rate of the cooling medium is easy to cause more serious bubble squat phenomenon, aggravates the abrasion of the spray gun, and has high requirements on a compressor and a pipeline and high energy consumption;
2. the adoption of the water cooling and oil cooling intensified cooling mode has poor safety and economy;
3. the gun barrel of the spray gun is designed to be fixed, the insertion depth of the spray gun barrel cannot be timely adjusted along with the loss of the spray gun, so that the front end of the spray gun barrel is embedded into a muzzle brick, and the abrasion of the muzzle brick is aggravated.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, it is an object of the present invention to provide an enhanced cooling submerged lance with reduced barrel front wear.
An embodiment of a submerged lance according to an aspect of the invention includes a barrel having a front end and a rear end, the barrel having one end and another end, the barrel comprising:
an outer tube, an inner wall of which is formed with a plurality of grooves in an axial direction;
the inner tube is coaxially sleeved in the outer tube, an outer layer cooling channel is defined between the outer wall of the inner tube and the inner wall of the outer tube, and a central channel along the axial direction is defined in the inner tube.
According to the submerged lance of the embodiment of the invention, when in use, a cooling medium (such as nitrogen or compressed air) is introduced into the outer layer cooling channel, and oxygen or oxygen-enriched air is introduced into the central channel. Because the outer tube of barrel is the main part that is heated, inject outer layer cooling channel between the outer wall of outer tube's inner wall and the outer wall of inner tube, the inner wall of outer tube is formed with a plurality of recesses along the axis direction, so greatly increased the cooling medium and outer layer cooling channel's heat dissipation area of contact, especially increased the heat dissipation area of contact of outer tube inner wall, thereby under the condition that does not increase cooling medium gas velocity of flow and change cooling medium, the intensive cooling effect of barrel especially outer tube has been improved greatly, thereby reduce outer tube temperature, alleviate deformation, burning loss and the wearing and tearing of submerged spray gun muzzle and muzzle brick. In addition, in some submerged lancing guns that require addition of fuel, the outer cooling channel can also be used to transport the fuel.
In addition, the submerged lancing according to the embodiment of the present invention may further have the following additional technical features:
according to one embodiment of the invention, the cross section of the groove is a curved surface with any shape.
According to one embodiment of the present invention, the barrel further includes a post sleeve defining a main nozzle extending in an axial direction and a plurality of auxiliary nozzles, the main nozzle being located at a central position of the post sleeve, the plurality of auxiliary nozzles being circumferentially spaced along a periphery of the main nozzle, the post sleeve being embedded in the inner tube from a front end of the barrel and communicating the main nozzle and the plurality of auxiliary nozzles with the central passage, respectively.
According to one embodiment of the invention, the telescopic device further comprises a telescopic fixing piece and a telescopic moving piece, wherein one end of the telescopic fixing piece is fixed on the outer wall of the furnace wall, and the telescopic moving piece is fixed on the gun barrel and is close to the rear end of the gun barrel; the telescopic moving part is movably connected with the telescopic fixed part, and when the telescopic moving part axially displaces relative to the telescopic fixed part, the gun barrel axially displaces synchronously along with the telescopic moving part.
Further, the flexible mounting is flexible fixed pipe, flexible moving part is flexible moving pipe, flexible fixed pipe with flexible moving pipe respectively with the barrel coaxial cover is established outside the barrel and be located the rear end of barrel, wherein, the one end of flexible fixed pipe is fixed on the outer wall of furnace wall, the one end of flexible moving pipe is fixed on the barrel, the other end of flexible moving pipe with the other end swing joint of flexible fixed pipe.
Further, the telescopic fixed tube is tightly matched with the telescopic movable tube and is fixed by a positioning bolt.
Further, the axial displacement travel of the telescopic moving piece along the axial direction is 100-500mm.
According to one embodiment of the present invention, the gun barrel further comprises a connecting piece, wherein a first channel and a second channel are respectively defined in the connecting piece, and when the connecting piece is fixedly connected with the gun barrel, the first channel is communicated with the central channel, and the second channel is communicated with the outer layer cooling channel.
Further, the first passage includes a first sub-passage communicating with the outer cooling passage in the axial direction of the barrel and a second sub-passage communicating with the first sub-passage at an obtuse angle.
Further, the rear end of the gun barrel is provided with a first flange, the connecting piece is provided with a second flange, and the first flange is fixedly connected with the second flange.
According to another aspect of the invention, an embodiment of an immersion lance includes:
the gun tube comprises an outer tube, an inner tube and a post sleeve head, wherein a plurality of grooves are formed in the inner wall of the outer tube along the axial direction, the inner tube is coaxially sleeved in the outer tube, an outer layer cooling channel is defined between the outer wall of the inner tube and the inner wall of the outer tube, and a central channel is defined in the inner tube along the axial direction; the column sleeve head is provided with a main spray hole and a plurality of auxiliary spray holes, the main spray hole and the auxiliary spray holes extend along the axial direction, the main spray hole is positioned at the center of the column sleeve head, the auxiliary spray holes are circumferentially distributed along the periphery of the main spray hole at intervals, the column sleeve head is embedded in the inner tube from the front end of the gun tube, and the main spray hole and the auxiliary spray holes are respectively communicated with the central channel; the rear end of the gun barrel is provided with a first flange;
the telescopic fixed tube and the telescopic movable tube are respectively sleeved outside the gun tube coaxially with the gun tube and are positioned at the rear end of the gun tube, one end of the telescopic fixed tube is fixed on the outer wall of the furnace wall, one end of the telescopic movable tube is fixed on the gun tube through screws or welding, and the other end of the telescopic movable tube is tightly matched with the other end of the telescopic fixed tube; when the telescopic movable tube axially shifts relative to the telescopic fixed tube, the gun tube synchronously axially shifts along with the telescopic movable tube;
the connecting piece is provided with a second flange, when the connecting piece is fixedly connected with the gun barrel through the second flange and the first flange, the first channel is communicated with the central channel, and the second channel is communicated with the outer layer cooling channel; the first passage comprises a first sub-passage and a second sub-passage, the first sub-passage is communicated with the outer layer cooling passage along the axial direction of the gun barrel, and the second sub-passage is communicated with the first sub-passage in an obtuse-angle crossing manner.
According to another aspect of the invention, the submerged lance has the following advantages: firstly, as the inner wall of the outer tube is provided with a plurality of grooves along the axial direction, the contact area between the radiating surface of the outer tube of the main heated part of the submerged lance and the cooling medium is enlarged, so that the cooling effect of the outer tube of the submerged lance, especially the gun tube, is enhanced under the condition of not increasing the gas flow rate of the cooling medium and changing the cooling medium; secondly, the gun barrel is designed to be a movable design, and the length of the gun barrel extending out of a muzzle brick can be timely adjusted after the muzzle of the gun barrel is worn, so that the scouring of gas and melt to the muzzle brick is reduced; and thirdly, the design of the second flange and the third flange of the connecting piece enables the whole installation and the disassembly of the connecting piece to be convenient.
In addition, the invention also provides a smelting equipment system, which comprises a smelting furnace, wherein the smelting furnace comprises a furnace wall, muzzle bricks arranged on the inner side of the furnace wall and an immersed spray gun, the immersed spray gun is the immersed spray gun in the embodiment of the other aspect of the invention, the immersed spray gun is arranged on the furnace wall and the muzzle bricks, the gun barrel extends out of the muzzle bricks, and the length of the front end of the gun barrel extending out of the muzzle bricks is 0-100mm.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of the structure and installation of an immersion lance according to an embodiment of the invention.
Fig. 2 is a schematic view of the front end of the barrel of an immersed lance in an embodiment of the invention.
Reference numerals:
submerged lance 100
Inner tube 12 sleeve head 13 spray hole 131 of outer tube 11 of gun tube 1 and outer layer cooling channel 111
Front end of barrel of secondary orifice 132 first flange 14 front end of barrel 15 rear end of barrel 16
Telescoping fixed part (telescoping fixed tube) 2 telescoping movable part (telescoping movable tube) 3
The first channel 41 of the connecting piece 4 is provided with a second channel 42, a third flange 43 and a second flange 44
Furnace wall 6 muzzle brick 7
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
A submerged lance and smelting plant system according to an embodiment of the invention is described below with reference to figures 1 and 2.
As shown in fig. 1 and 2, the submerged lancing gun 100 according to an embodiment of an aspect of the present invention includes a barrel 1 having a front end 15 and a rear end 16, the barrel 1 including an outer tube 11 and an inner tube 12, the inner wall of the outer tube 11 being formed with a plurality of grooves in an axial direction; the inner tube 12 is coaxially sleeved in the outer tube 11, an outer cooling passage 111 is defined between an outer wall of the inner tube 12 and an inner wall of the outer tube 11, and a central passage (not shown) in the axial direction is defined in the inner tube 12.
In use, according to an embodiment of the submerged lance 100 of the present invention, a cooling medium (such as nitrogen or compressed air) is introduced into the outer cooling passage 111 and oxygen or oxygen enriched air is introduced into the central passage. Because the outer tube 11 of the gun tube 1 is a main heated part, an outer layer cooling channel 111 is defined between the inner wall of the outer tube 11 and the outer wall of the inner tube 12, and a plurality of grooves are formed on the inner wall of the outer tube 11 along the axial direction, so that the heat dissipation contact area of a cooling medium and the outer layer cooling channel 111 is greatly increased, especially the heat dissipation contact area of the inner wall of the outer tube 11 is increased, the reinforced cooling effect of the gun tube 1, especially the outer tube 11, is greatly improved under the condition that the gas flow rate of the cooling medium is not increased and the cooling medium is changed, the temperature of the outer tube is reduced, and the deformation, burning loss and abrasion of the muzzle and muzzle bricks 7 of the submerged lance 100 are slowed down. In addition, in some submerged lancing guns 100 that require addition of fuel, the outer cooling channel 111 may also be used to transport the fuel.
According to one embodiment of the invention, the cross section of the groove may be curved in any shape. In this embodiment, the cross section of the groove is triangular, however, in other embodiments, the groove may be fan-shaped, square-shaped or other shapes, so long as the wall surface area of the groove can be increased to increase the contact surface between the cooling medium and the heat dissipating surface of the outer tube 11 of the main heat receiving element, which is considered.
According to one embodiment of the present invention, the barrel 1 further includes a barrel head 13, the barrel head 13 defining a main spray hole 131 extending in an axial direction and a plurality of auxiliary spray holes 132, the main spray hole 131 being located at a central position of the barrel head 13, the plurality of auxiliary spray holes 132 being circumferentially distributed at intervals along a periphery of the main spray hole 131, the barrel head 13 being embedded in the inner tube 12 from a front end 15 of the barrel 1, and the main spray hole 131 and the plurality of auxiliary spray holes 132 being respectively communicated with the central passage.
Through inlaying at the inner tube one end of barrel 1 and establishing post sleeve 13, the main orifice 131 and a plurality of vice orifice 132 that are defined respectively on the post sleeve 13 and communicate with central passage for oxygen or oxygen-enriched air branch become the multistrand efflux after spouting from the barrel, wherein, the central efflux of main orifice 131 is the main efflux, plays the drainage effect, and the peripheral efflux of vice orifice 132 is the auxiliary jet, plays the effect of dispersion efflux, can prevent on the one hand that the fuse-element from flowing backward into barrel 1 in, on the other hand is favorable to expanding the area of contact of oxygen or oxygen-enriched air and fuse-element, makes oxygen and fuse-element fully react.
Further, the length of the post sleeve 13 in the axial direction is 200mm, which is beneficial to the longer service time of the gun barrel 1.
According to one embodiment of the invention, the telescopic device further comprises a telescopic fixed piece 2 and a telescopic movable piece 3, wherein one end of the telescopic fixed piece 2 is fixed on the outer wall of the furnace wall 6, and the telescopic movable piece 3 is fixed on the gun barrel 1 and is adjacent to the rear end 16 of the gun barrel 1; the telescopic movable piece 3 is movably connected with the telescopic fixed piece 2, and when the telescopic movable piece 3 axially displaces relative to the telescopic fixed piece 2, the gun barrel 1 synchronously axially displaces along with the telescopic movable piece 3.
Through setting up flexible moving part 3 and flexible mounting 2, when flexible moving part 3 makes relative motion and takes place axial displacement relative to flexible mounting 2, drive barrel 1 and do the synchronous axial displacement with flexible moving part 3 to realize the dynamic adjustment of the length that barrel 1 stretches out muzzle brick 7. Thus, after the gun mouth of the gun barrel 1 is worn, the length of the gun barrel extending out of the gun mouth brick 7 can be adjusted in time, and the abrasion of the gun mouth brick 7 is aggravated when the gun mouth is flush with the gun rotation or embedded into the gun mouth brick 7, and the gun mouth brick 7 is exposed in a high-speed airflow and melt scouring environment. Muzzle brick 7 and barrel 1 are interdependent, and protection of muzzle brick 7 also increases the life of the submerged lance.
Further, the telescopic fixing piece 2 is a telescopic fixing tube, the telescopic movable piece 3 is a telescopic movable tube, the telescopic fixing tube and the telescopic movable tube are respectively sleeved outside the gun tube 1 coaxially with the gun tube 1 and are located at the rear end 16 of the gun tube 1, one end of the telescopic fixing tube is fixed on the outer wall of the furnace wall 6, one end of the telescopic movable tube is fixed on the gun tube 1, and the other end of the telescopic movable tube is movably connected with the other end of the telescopic fixing tube. Specifically, the fixing mode of the telescopic movable tube is that a radial screw hole is arranged on the tube body at the other end of the telescopic movable tube, and the telescopic movable tube is fastened on the outer tube 11 through the screw hole by a screw, so that the installation is convenient; of course, in other embodiments, the fixing manner of the telescopic movable tube may also be that the telescopic movable tube is welded on the outer tube 11; the flexible movable tube and the flexible fixed tube are in movable connection, so that the structure is simple, and the dynamic adjustment of the length of the gun tube extending out of the muzzle brick 7 is realized by easy operation.
Further, the axial displacement travel of the telescopic moving member 3 along the axial direction is preferably 100-500mm, which is beneficial to prolonging the service lives of the submerged lancing gun 100 and the muzzle brick 7, and frequent periodic maintenance of the submerged lancing gun 100 and the muzzle brick 7 is not required.
According to one embodiment of the present invention, the present invention further includes a connection member 4, wherein the connection member 4 defines a first channel 41 and a second channel 42, respectively, and the first channel 41 communicates with the central channel and the second channel 42 communicates with the outer cooling channel 111 when the connection member 4 is fixedly connected to the barrel 1. The outer cooling channel 111 and the central channel of the barrel 1 can be conveniently and respectively injected with a cooling medium (such as nitrogen or compressed air) and oxygen (or oxygen enriched air) through the connection 4.
Further, the first channel 41 includes a first sub-channel communicating with the outer cooling channel 111 in the axial direction of the barrel 1 and a second sub-channel communicating with the first sub-channel at an obtuse angle (e.g., included angle α as shown in fig. 1) to reduce the local resistance loss of the gaseous cooling medium (e.g., nitrogen or compressed air) due to the right or acute angle connection.
Further, the rear end 16 of the gun barrel 1 is provided with a first flange 14, the connecting piece 4 is provided with a second flange 44, and the first flange 14 is fixedly connected with the second flange 44, so that the mounting and the dismounting are convenient; moreover, the end of the first sub-channel and the end of the second channel 42 of the connecting piece 4 are also provided with a third flange 43, so that the whole assembly and disassembly of the connecting piece 4 are convenient.
As shown in fig. 1 and 2, an immersion spray gun 100 according to another aspect of the present invention includes: a gun barrel 1, a telescopic fixed tube 2, a telescopic movable tube 3 and a connecting piece 4. Wherein, the gun tube 1 comprises an outer tube 11, an inner tube 12 and a column sleeve 13, the inner wall of the outer tube 11 is provided with a plurality of grooves along the axial direction, the inner tube 12 is coaxially sleeved in the outer tube 11, an outer layer cooling channel 111 is defined between the outer wall of the inner tube 12 and the inner wall of the outer tube 11, and a central channel is defined in the inner tube 12 along the axial direction; the cylinder head 13 defines a main spray hole 131 and a plurality of auxiliary spray holes 132 extending along the axial direction, the main spray hole 131 is positioned at the center of the cylinder head 13, the plurality of auxiliary spray holes 132 are circumferentially distributed along the periphery of the main spray hole 131 at intervals, the cylinder head 13 is embedded in the inner tube 12 from the front end 15 of the gun tube 1, and the main spray hole 131 and the plurality of auxiliary spray holes 132 are respectively communicated with the central channel; the rear end 16 of the barrel 1 is provided with a first flange 14; the telescopic fixed pipe and the telescopic movable pipe are respectively sleeved outside the gun pipe 1 coaxially with the gun pipe 1 and are positioned at the rear end 16 of the gun pipe 1, wherein one end of the telescopic fixed pipe is fixed on the outer wall of the furnace wall 6, one end of the telescopic movable pipe is fixed on the gun pipe 1 through screws or welding, and the other end of the telescopic movable pipe 3 is in threaded connection with the other end of the telescopic fixed pipe 2; when the telescopic movable tube 3 axially shifts relative to the telescopic fixed tube 2, the gun tube 1 synchronously axially shifts along with the telescopic movable tube 3; the connecting piece 4 is provided with a second flange 44, when the connecting piece 4 is fixedly connected with the gun barrel 1 through the second flange 44 and the first flange 14, the first channel 41 is communicated with the central channel, and the second channel 42 is communicated with the outer layer cooling channel 111; wherein the first channel 41 comprises a first sub-channel and a second sub-channel, the first sub-channel is communicated with the outer layer cooling channel 111 along the axial direction of the gun barrel 1, and the second sub-channel is communicated with the first sub-channel in a crossing way at an obtuse angle; the ends of the first and second sub-channels 42 are each provided with a third flange 43.
The submerged lancing gun 100 according to another embodiment of the present invention has the following advantages: firstly, as the inner wall of the outer tube 11 is provided with a plurality of grooves along the axial direction, the contact area between the radiating surface of the outer tube 11 of the main heated part of the submerged lance 100 and the cooling medium is enlarged, so that the cooling effect of the submerged lance 100, especially the outer tube 11 of the gun tube 1, is enhanced under the condition of not increasing the gas flow rate of the cooling medium and changing the cooling medium; secondly, the gun barrel is designed to be a movable design, and the length of the gun barrel extending out of the muzzle brick 7 can be timely adjusted after the muzzle of the gun barrel is worn, so that the scouring of gas and melt to the muzzle brick 7 is reduced; third, the design of the second flange 44 and the third flange 43 of the connecting piece 4 makes the whole installation and disassembly of the connecting piece 4 convenient.
In addition, the invention also provides a smelting equipment system (shown in fig. 1 and 2), comprising a smelting furnace, wherein the smelting furnace comprises a furnace wall 6, muzzle bricks 7 arranged on the inner side of the furnace wall 6 and submerged lance 100, the submerged lance 100 is the submerged lance 100 according to the embodiment of the invention, the submerged lance 100 is arranged on the furnace wall 6 and muzzle bricks 7 and enables a gun tube 1 to extend out of the muzzle bricks 7, and the length of the front end 15 of the gun tube 1 extending out of the muzzle bricks 7 is 0-100mm.
The smelting plant system according to an embodiment of the invention, wherein submerged lance 100 has the following advantages: firstly, as the inner wall of the outer tube 11 is provided with a plurality of grooves along the axial direction, the contact area between the radiating surface of the outer tube 11 of the main heated part of the submerged lance 100 and the cooling medium is enlarged, so that the cooling effect of the submerged lance 100, especially the outer tube 11 of the gun tube 1, is enhanced under the condition of not increasing the gas flow rate of the cooling medium and changing the cooling medium; secondly, the gun barrel 1 is designed to be a movable design, and the length of the gun barrel extending out of the muzzle brick 7 can be timely adjusted after the muzzle of the gun barrel 1 is worn, so that the scouring of gas and melt to the muzzle brick 7 is reduced; third, the design of the second flange 44 and the third flange 43 of the connecting piece 4 makes the whole installation and disassembly of the connecting piece 4 convenient.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. An immersed spray gun comprising a barrel having a front end and a rear end, the barrel comprising:
an outer tube, an inner wall of which is formed with a plurality of grooves in an axial direction;
the inner pipe is coaxially sleeved in the outer pipe, an outer layer cooling channel is defined between the outer wall of the inner pipe and the inner wall of the outer pipe, and a central channel along the axial direction is defined in the inner pipe; the section of the groove is a curved surface;
the telescopic moving part is fixed on the gun barrel and is close to the rear end of the gun barrel; the telescopic moving part is movably connected with the telescopic fixed part, and when the telescopic moving part axially displaces relative to the telescopic fixed part, the gun barrel axially displaces synchronously along with the telescopic moving part.
2. The submerged lancing gun of claim 1, wherein the lance further comprises a post sleeve defining a main nozzle extending in an axial direction and a plurality of auxiliary nozzles, the main nozzle being centrally located in the post sleeve, the plurality of auxiliary nozzles being circumferentially spaced around the periphery of the main nozzle, the post sleeve being embedded in the inner tube from a forward end of the lance and communicating the main nozzle and the plurality of auxiliary nozzles, respectively, with the central passage.
3. The submerged lance of claim 1, wherein the telescopic fixed member is a telescopic fixed tube, the telescopic movable member is a telescopic movable tube, the telescopic fixed tube and the telescopic movable tube are respectively sleeved outside the lance tube and at the rear end of the lance tube coaxially with the lance tube, wherein one end of the telescopic fixed tube is fixed on the outer wall of the furnace wall, one end of the telescopic movable tube is fixed on the lance tube, and the other end of the telescopic movable tube is movably connected with the other end of the telescopic fixed tube.
4. A submerged lance according to claim 3, wherein the telescopic fixed pipe is tightly fitted with the telescopic movable pipe and fixed with a locating bolt.
5. A submerged lance according to claim 3 or 4, wherein the axial displacement travel of the telescopic moveable member in the axial direction is 100-500mm.
6. The submerged lance of claim 1, further comprising a connector that defines a first passage and a second passage, respectively, wherein the first passage communicates with the outer layer cooling passage and the second passage communicates with the central passage when the connector is fixedly coupled to the lance tube.
7. The submerged lance of claim 6, wherein the first passage comprises a first sub-passage that communicates with the outer layer cooling passage in the axial direction of the lance tube and a second sub-passage that communicates with the first sub-passage at an obtuse angle.
8. The submerged lancing gun of claim 6, wherein the rear end of the lance tube is provided with a first flange and the connector is provided with a second flange, the first flange being fixedly connected to the second flange.
9. A smelting equipment system, characterized by comprising a smelting furnace, wherein the smelting furnace comprises a furnace wall, muzzle bricks arranged on the inner side of the furnace wall and an immersed spray gun, the immersed spray gun is an immersed spray gun as claimed in claim 1, the immersed spray gun is arranged on the furnace wall and the muzzle bricks, a gun barrel extends out of the muzzle bricks, and the front end of the gun barrel extends out of the muzzle bricks to be 0-100mm.
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| CN201811050644.6A CN109163565B (en) | 2018-09-10 | 2018-09-10 | Submerged lance and smelting equipment system |
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| CN201811050644.6A CN109163565B (en) | 2018-09-10 | 2018-09-10 | Submerged lance and smelting equipment system |
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| CN109163565B true CN109163565B (en) | 2024-01-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110895107B (en) * | 2019-12-16 | 2025-01-24 | 中国恩菲工程技术有限公司 | Melting furnace spray gun and melting furnace |
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| US9016094B2 (en) * | 2013-01-16 | 2015-04-28 | Guardian Industries Corp. | Water cooled oxygen lance for use in a float glass furnace and/or float glass furnace using the same |
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| CN109163565A (en) | 2019-01-08 |
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