CN218811866U - Quick-change oxygen lance for steelmaking - Google Patents

Abstract

The utility model discloses a quick change oxygen rifle for steelmaking, the gun comprises a gun barrel, a fixed base, first return bend, the second return bend, the third return bend, oxygen rifle dolly and quick change seat, the fixing base is equipped with three through-hole, through-hole department sets up the seal cover, it is first, the one end of second and third return bend communicates with the seal cover respectively, the other end is respectively through the flange from inside to outside along in proper order first, the order cover of second and third return bend is established, the return bend intercommunication that the fixing base was established with the cover is passed on the barrel top, the inner tube, well pipe and outer tube and first, second and third return bend communicate respectively, the barrel bottom is equipped with the oxygen lance shower nozzle, the quick change seat is equipped with the sealing joint who corresponds with the seal cover position, sealing joint pegs graft with the seal cover, the oxygen hose that corresponds with first return bend is connected respectively to three sealing joint's bottom, the delivery pipe that corresponds with the second return bend, and the outlet pipe that corresponds with the third return bend. The utility model discloses a sealing joint promotes oxygen rifle and changes efficiency and convenient degree with the grafting structure of seal cover.

Description

Quick-change oxygen lance for steelmaking

Technical Field

The utility model belongs to the technical field of converter steelmaking oxygen rifle, in particular to quick change formula oxygen rifle is used in steelmaking.

Background

The oxygen lance is one of main devices in converter oxygen blowing steelmaking, and in the steelmaking process, the oxygen lance has the main functions of providing oxygen into a converter and forming oxygen jet flow, wherein the oxygen jet flow passes through high-temperature furnace gas to impact on the surface of a molten pool and penetrates into the molten pool to perform chemical reaction with molten steel so as to meet the requirements of smelting decarburization, temperature rise and impurity removal. The performance characteristics of the oxygen lance directly affect the smelting efficiency. The oxygen lance belongs to a consumable part and needs to be replaced periodically to ensure the smelting quality and efficiency, the existing oxygen lance has low replacement efficiency, the converter operation rate is directly influenced, the labor intensity of workers is increased, and the quality and the yield of steel are influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a quick change oxygen rifle is used in steelmaking aims at solving the problem that prior art exists among the above-mentioned background art.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a quick change oxygen rifle for steelmaking, includes barrel, fixing base, first return bend, second return bend, third return bend, oxygen rifle dolly and quick change seat, the fixing base is equipped with three through-hole, and through-hole department sets up the seal cover, the one end of first, second and third return bend communicates with three seal cover respectively, and the other end overlaps through the flange in proper order according to the order of first, second and third return bend from inside to outside respectively and establishes, the barrel includes inner tube, well pipe and the outer tube that overlaps from inside to outside in proper order, and the barrel top passes the fixing base and communicates with the return bend of establishing, and inner tube and first return bend intercommunication, well pipe and second return bend intercommunication, outer tube and third return bend intercommunication, barrel bottom are equipped with the oxygen rifle shower nozzle, the quick change seat is connected with the oxygen rifle dolly, and the quick change seat is equipped with the sealing joint who corresponds with the seal cover position, sealing joint pegs graft with the seal cover, and three sealing joint's bottom is connected respectively with the oxygen pipe that first return bend corresponds, the delivery pipe that corresponds with the second return bend and the outlet pipe that corresponds with the third return bend.

The fixing base is provided with three through holes, sealing sleeves used for connecting a first bent pipe, a second bent pipe and a third bent pipe are respectively arranged in the through holes, the oxygen lance trolley is connected with a quick-change base, the quick-change base is connected with the sealing sleeves in an inserted mode through a sealing joint, so that an oxygen pipe is communicated with the first bent pipe and supplies oxygen to the oxygen lance nozzle, a water inlet pipe is communicated with the second bent pipe and is used for supplying cooling water, a water outlet pipe is communicated with the third bent pipe and is used for discharging the cooling water, and the inserted connection mode effectively improves the replacement efficiency of the oxygen lance.

Furthermore, the quick-change seat is communicated with the fixed seat through a turnover bolt, a first screw rod of the turnover bolt is rotatably connected with the quick-change seat, a groove is formed in the edge of the fixed seat, and the upper end of the screw rod is rotated into the groove and is fixed through a first nut. The turnover bolt can not only improve the stability of the connection between the quick-change seat and the fixed seat, but also facilitate the replacement of the oxygen lance.

Further, the first nut is provided with a handheld portion. When the oxygen lance is replaced, the nut does not need to be disassembled through tools, and the replacement efficiency of the oxygen lance is favorably improved.

Furthermore, the section of the gun barrel is gradually enlarged upwards along the oxygen lance nozzle to form a conical pipe section. The barrel is provided with the conical pipe section, so that a slag layer can fall off conveniently, and the labor intensity of workers is reduced.

Furthermore, nitrogen blocking fixture blocks are arranged on the side wall of the gun barrel at intervals in the circumferential direction.

Furthermore, the bottom surface of the fixed seat is provided with a guide block and a spherical positioning seat for adjusting the oxygen lance. The spherical positioning seat is used for adjusting the center position of the gun barrel.

Further, the oxygen rifle dolly is equipped with adjusts the seat, it includes U-shaped base, backup pad and second screw rod to adjust the seat, the U-shaped base is equipped with the U-shaped recess, the barrel sets up in the U-shaped recess, 4 the backup pad sets up in U-shaped base top surface and towards the barrel around barrel circumference, and the backup pad is equipped with the connecting hole, connecting hole one side is equipped with the second nut with second screw rod threaded connection, second screw rod tip and barrel butt. And the second screw rod is rotated to assist in adjusting the center position of the gun barrel.

Furthermore, an annular groove is formed in the upper portion of the sealing joint, and a sealing ring is arranged in the annular groove.

Further, still include hoist device, hoist device is including the seat cover of the third return bend of cover below locating the flange, the seat cover both sides are respectively through gudgeon and connecting plate sub-unit connection, and both sides connecting plate upper portion is passed through rings and is connected.

Compare in prior art's shortcoming and not enough, the utility model discloses following beneficial effect has:

1. the utility model provides a quick change formula oxygen rifle is used in steelmaking, the oxygen rifle dolly sets up the quick change seat, the fixing base sets up the seal cover, the quick change seat is equipped with the sealing joint who corresponds with the seal seat, peg graft with the seal seat through sealing joint, with oxygen hose and first return bend intercommunication and to the oxygen rifle shower nozzle oxygen suppliment, the inlet tube communicates with the second return bend and carries the cooling water to the oxygen rifle shower nozzle, outlet pipe and third return bend intercommunication, be used for discharging the cooling water, through the connected mode of pegging graft, the cooperation is used for connecting the upset bolt of fixing base and quick change seat, when guaranteeing connection stability, promote the change efficiency of oxygen rifle.

2. The gun barrel is provided with the conical pipe section, so that the slag layer is easier to fall off, and the labor intensity of workers is reduced.

3. The bottom surface of the fixing seat is provided with a guide block and a spherical positioning seat, and the oxygen lance trolley is provided with an adjusting seat, so that the center position of a gun barrel can be conveniently adjusted.

Drawings

FIG. 1 is a schematic side view of an oxygen lance according to an embodiment of the present invention.

Fig. 2 isbase:Sub>A schematic cross-sectional view atbase:Sub>A-base:Sub>A' in fig. 1.

FIG. 3 is a schematic view of the structure of the other side of the oxygen lance in the embodiment of the present invention.

Fig. 4 is a partially enlarged schematic view of a portion a in fig. 3.

FIG. 5 is a schematic side view of a quick-change oxygen lance for steelmaking according to an embodiment of the present invention.

FIG. 6 is another schematic side view of a quick-change oxygen lance for steelmaking according to an embodiment of the present invention.

Fig. 7 is a schematic cross-sectional structure at B-B' in fig. 5.

Fig. 8 is a schematic view of a connection structure between the fixing base and the first, second, and third bent pipes according to an embodiment of the present invention.

Fig. 9 is a schematic top view of an adjusting seat according to an embodiment of the present invention.

In the figure: 1-a barrel; 11-oxygen lance nozzle; 12-an inner tube; 13-middle tube; 14-an outer tube; 15-a conical pipe section; 16-nitrogen blocking fixture block; 2-a fixed seat; 21-sealing sleeve; 22-a guide block; 23-a groove; 3-a first bend; 4-a second bend; 5-a third bend; 6-hoisting the device; 61-hoisting rings; 62-a connecting plate; 63-trunnion; 64-seat cover; 7-oxygen lance carriage; 8-quick change seat; 81-sealing the joint; 811-sealing ring; 82-a turnbolt; 9-an adjusting seat; 91-U-shaped base; 92-a support plate; 93-a second nut; 94-second screw.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and 3, the quick-change oxygen lance for steelmaking comprises a lance tube 1, a fixed seat 2, a first bent tube 3, a second bent tube 4, a third bent tube 5, a hoisting device 6, an oxygen lance trolley 7 and a quick-change seat 8; an oxygen lance nozzle 11 is arranged at the bottom end of a gun barrel 1, (refer to fig. 4) the gun barrel 1 is sequentially sleeved with an inner pipe 12, a middle pipe 13 and an outer pipe 14 from inside to outside, wherein the inner pipe 12 is used for conveying oxygen to the oxygen lance nozzle 11, the inner pipe 12 is preferably made of wear-resistant, acid-resistant and corrosion-resistant stainless steel materials, a gap between the middle pipe 13 and the inner pipe 12 is used for conveying cooling water to the oxygen lance nozzle 11, the outer pipe 14 is communicated with the middle pipe 13 at the oxygen lance nozzle 11, and the gap between the outer pipe 14 and the middle pipe 13 is used for discharging the cooling water; one side of the fixed seat 2 is provided with a first through hole, a second through hole and a third through hole which are arranged in a triangular shape, the distribution of the triangular shape is favorable for saving space and reducing the area of the fixed seat 2, (refer to figure 2) the first through hole, the second through hole and the third through hole are respectively provided with a sealing sleeve 21, one end of the first bent pipe, one end of the second bent pipe and one end of the third bent pipe are respectively corresponding to the first through hole, the second through hole and the third through hole, the end parts of the first bent pipe, the second bent pipe and the third bent pipe are respectively communicated with the corresponding sealing sleeves 21, and the other ends are sequentially sleeved from inside to outside through flanges according to the sequence of the first bent pipe 3, the second bent pipe 4 and the third bent pipe 5, specifically, the second bent pipe 4 is sleeved outside the first bent pipe 3 through a flange, the third bent pipe 5 is sleeved outside the second bent pipe 4 through a flange, the top end of the gun barrel 1 penetrates through the fixing seat 2 to be connected with the sleeved bent pipe, so that the first bent pipe 3 is communicated with the inner pipe 12, the second bent pipe 4 is communicated with the middle pipe 13, the third bent pipe 5 is communicated with the outer pipe 14, the bottom surface of the fixing seat 2 is provided with guide blocks 22 and spherical positioning seats, the guide blocks 22 are symmetrically arranged on two sides of the gun barrel 1, the guide blocks 22 on two sides are respectively connected with two sides of the spherical positioning seats, the gun barrel 9 penetrates through the spherical positioning seats, and the center of the gun barrel 1 is adjusted through the spherical positioning seats; the hoisting device 6 comprises a seat sleeve 64, a connecting plate 62 and a hoisting ring 61, the seat sleeve 64 is sleeved outside the third bent pipe 5 sleeved below the flange, the seat sleeve 64 and the connecting plates 62 on the two sides of the seat sleeve are respectively connected through a trunnion 63, the top ends of the connecting plates 62 on the two sides are connected through the hoisting ring 61, and the hoisting device 6 is used for hoisting the oxygen lance so as to facilitate the movement of the oxygen lance; referring to fig. 5, the quick-change seat 8 is arranged on one side of the oxygen lance trolley 7, referring to fig. 7, the quick-change seat 8 is provided with three sealing joints 81 corresponding to the positions of the first, second and third through holes, an annular groove is arranged on the upper portion of the sealing joint 81, a sealing ring 811 is arranged in the annular groove, a plurality of groups of annular grooves and sealing rings 811 can be arranged at intervals to improve the sealing effect, the sealing joints 81 are inserted into the sealing sleeve 21 and are in sealing connection with the sealing sleeve 21, the bottoms of the three sealing joints 81 are respectively connected with an oxygen pipe, a water inlet pipe and a water outlet pipe, so that the oxygen pipe is communicated with the first elbow pipe 3, the water inlet pipe is communicated with the second elbow pipe 4, and the water outlet pipe is communicated with the third elbow pipe 5.

Refer to fig. 6 and fig. 8, pass through bolted connection between fixing base 2 and the quick change seat 8, it is preferred, the bolt adopts upset bolt 82, upset bolt 82's first screw rod bottom is rotated with the 8 top surfaces of quick change seat and is connected, fixing base 2 sets up the recess 23 with first screw rod size adaptation with the border department that upset bolt 82 position corresponds, recess 23 slides in along recess 23 on first screw rod upper portion, it is fixed that its top is through first nut, first nut is preferred to be equipped with handheld portion, when changing the oxygen rifle, be convenient for dismantle first nut through the manual work fast, make first screw rod along the quick roll-off of recess 23, thereby promote the oxygen rifle and change efficiency.

The barrel 1 outside sets up nitrogen sealing plug fixture block 16 for spacing nitrogen sealing plug prevents that nitrogen sealing plug from droing, and nitrogen sealing plug is used for the flue gas in the isolated converter and prevents that the flue gas from leaking, and 16 circumference intervals of a plurality of nitrogen sealing plug fixture blocks set up in barrel 1 lateral wall.

The section size of the gun barrel 1 is gradually enlarged upwards along the oxygen lance nozzle 11 to form a conical pipe section 15, the conical angle is 1.5-2.5 degrees, and according to the size of the specification and model of the oxygen lance, the length of the conical pipe section 15 is 6-10 m, so that a slag layer can fall off in the using process of the oxygen lance, and the labor intensity of workers is reduced.

Referring to fig. 9, oxygen rifle dolly 7 one side sets up adjusts seat 9 for supplementary fine setting barrel 1 center, it includes U-shaped base 91 to adjust seat 9, the U-shaped recess that link up about base 91 outside sets up, barrel 1 gets into the U-shaped recess along the base 91 outside, base 91 top surface evenly sets up 4 backup pads 92 around setting up barrel 1 circumference in the U-shaped recess, backup pad 92 all faces barrel 1, and backup pad 92 is equipped with the connecting hole, connecting hole one side sets up second nut 93, second nut 93 threaded connection has second screw 94, make its tip and barrel 1 butt through rotatory second screw 94, through 4 second screw 94 of adjusting circumference setting, the central point of supplementary regulation barrel 1 puts.

The utility model provides a quick change oxygen rifle for steelmaking, fixing base 2 is first, second and third through-hole department set up seal cover 21, oxygen rifle dolly 7 sets up quick change seat 8, quick change seat 8 is equipped with the sealing joint 81 that corresponds with the through-hole position of fixing base 2, peg graft with seal cover 21 through sealing joint 81, communicate oxygen hose and first return bend 3, inlet tube and 4 intercommunications of second return bend, outlet pipe 5 and third return bend intercommunication, guarantee the steady operation of oxygen rifle, and simultaneously, the quick replacement of grafting structure oxygen rifle of being convenient for, be connected through upset bolt 82 between fixing base 2 and the quick change seat 8, can promote the stability of connecting, the quick replacement of being convenient for again, the oxygen rifle barrel sets up the conic tube section 15, the slag blanket of being convenient for drops, reduce workman intensity of labour.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. The utility model provides a quick-change oxygen rifle for steelmaking which characterized in that includes barrel, fixing base, first return bend, second return bend, third return bend, oxygen rifle dolly and quick change seat, the fixing base is equipped with three through-hole, and through-hole department sets up the seal cover, the one end of first, second and third return bend communicates with three seal cover respectively, and the other end overlaps through the flange from inside to outside according to the order of first, second and third return bend in proper order and establishes, the barrel includes inner tube, well pipe and the outer tube that overlaps from inside to outside in proper order, and the barrel top passes the fixing base and communicates with the return bend of establishing, and inner tube and first return bend intercommunication, well pipe and second return bend intercommunication, outer tube and third return bend intercommunication, and the barrel bottom is equipped with the oxygen rifle shower nozzle, quick change seat is connected with the oxygen rifle dolly, and the quick change seat is equipped with the sealing joint who corresponds with the seal cover position, sealing joint pegs graft with the seal cover, and the bottom of three sealing joint is connected respectively with the oxygen pipe that first return bend corresponds, the delivery pipe that corresponds with the second return bend and the outlet pipe that corresponds with the third return bend.

2. The quick-change oxygen lance for steelmaking according to claim 1, wherein the quick-change seat is communicated with the fixed seat through a turnover bolt, a first screw rod of the turnover bolt is rotatably connected with the quick-change seat, a groove is formed in the edge of the fixed seat, and the upper end of the screw rod is rotated into the groove and fixed through a first nut.

3. The quick-change oxygen lance for steelmaking as claimed in claim 2 wherein the first nut is provided with a hand-held portion.

4. The quick-change oxygen lance for steelmaking as claimed in claim 2 wherein the lance tube is tapered along the lance tip.

5. The quick-change oxygen lance for steelmaking as claimed in claim 2 wherein the side wall of the lance tube is circumferentially spaced apart by nitrogen blocks.

6. The quick-change oxygen lance for steelmaking as claimed in claim 2, wherein the bottom surface of the fixing base is provided with a guide block and a spherical positioning base for adjusting the oxygen lance.

7. The quick-change oxygen lance as claimed in claim 6, wherein the oxygen lance carriage is provided with an adjusting seat, the adjusting seat comprises a U-shaped base, a support plate and a second screw, the U-shaped base is provided with a U-shaped groove, the barrel is arranged in the U-shaped groove, 4 support plates are arranged on the top surface of the U-shaped base around the circumference of the barrel and face the barrel, the support plates are provided with connecting holes, one side of each connecting hole is provided with a second nut in threaded connection with the second screw, and the end of the second screw is abutted against the barrel.

8. The quick-change oxygen lance for steelmaking as claimed in claim 2, wherein an annular groove is provided in an upper portion of the sealing joint, and a sealing ring is provided in the annular groove.

9. The quick-change oxygen lance for steelmaking as claimed in any one of claims 1 to 8, further comprising a hoisting device, wherein the hoisting device comprises a seat sleeve of a third elbow pipe sleeved below the flange, two sides of the seat sleeve are respectively connected with the lower parts of the connecting plates through trunnions, and the upper parts of the connecting plates on two sides are connected through hoisting rings.

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