CN211079221U - Device for maintaining gap between bottom-blowing quick-change nozzle and brick cup - Google Patents
Device for maintaining gap between bottom-blowing quick-change nozzle and brick cup Download PDFInfo
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- CN211079221U CN211079221U CN201921755740.0U CN201921755740U CN211079221U CN 211079221 U CN211079221 U CN 211079221U CN 201921755740 U CN201921755740 U CN 201921755740U CN 211079221 U CN211079221 U CN 211079221U
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- barrel
- bottom blowing
- maintaining
- brick cup
- nozzle
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Abstract
The utility model discloses a device for maintaining the gap between a nozzle and a brick cup after bottom-blowing quick change, which comprises a maintaining main body and a pushing device, wherein the maintaining main body comprises a barrel with an opening at one end and a closed end, the opening end of the barrel is sequentially provided with a rotating handle and a safety baffle, the end opening of the barrel is provided with a barrel screw thread, the barrel wall is provided with a plurality of mud outlet holes, the pushing device comprises a supporting rod with a thread structure at two ends, the supporting rod is of a hollow tubular structure, one end of the supporting rod is sequentially provided with a boosting handle and a sealing cover matched with the barrel screw thread, the other end of the supporting rod is provided with a push plate, the method comprises the steps of maintenance preparation, filling of fire clay, rotary leveling, installation of a spray gun, baking furnace sintering and cleaning, the utility model can effectively maintain the gap between the nozzle and the brick cup after bottom-blowing quick change, and further, the risk of steel leakage at the part of the bottom blowing element is greatly reduced.
Description
Technical Field
The utility model belongs to the technical field of the metallurgical technology, concretely relates to maintain device in nozzle and brick cup clearance behind bottom blowing quick change.
Background
The top-bottom combined blowing of oxygen converter is a new technology and new process developed in the field of steel making in the end of the 20 th century 70 s, and the new smelting mode has the advantages of both top blowing and bottom blowing.
The service life of a bottom ventilating element of a combined blown converter is difficult to be synchronous with the furnace age, which is a technical problem of long service life of combined blown converter, the combined blown effect of the top-bottom combined blown converter is obviously poor in the later period of the converter service, mainly, the corrosion of the converter molten pool part is fast in the middle and later periods of the converter service, the bottom of the converter is forced to be repaired, the bottom blowing hole covers a slag layer, the repaired material is thick, the exposure degree of the bottom blowing hole is poor, the smoothness of bottom blown gas is difficult to ensure, even if an instrument of a converter bottom blowing pipeline displays gas flow, the gas actually blown by a bottom blowing gun does not enter the molten pool, but is scattered from a branch formed by a refractory material gap of the converter lining, the actual.
Aiming at the problem of poor effect of the combined blowing in the later period of the converter service, a plurality of steel enterprises start to attack the converter combined blowing technology, on one hand, the difficulty that the effect of the converter bottom blowing under weak stirring strength is difficult to control stably is solved by attacking the converter bottom blowing position, the gun-shaped optimized bottom blowing gun and the dynamic maintenance technology of the furnace lining, the bottom blowing mode optimization and the like, the stable control of the carbon oxygen deposit in the whole service of the converter is realized, and the carbon oxygen deposit can still be kept to be controlled stably even in the later period of the service of the converter; but the bottom blowing effect is still different from the bottom blowing effect under strong bottom blowing stirring; on the other hand, many steel enterprises use the technology of rapidly replacing bottom ventilation elements to achieve the synchronization of furnace life and re-blowing in reference to Japan steel works, on the premise of not changing the bottom blowing strength, the quantity of bottom blowing guns is adjusted, the quantity of original bottom blowing guns is adjusted to 4 from 12 or 8, the flow of single bottom blowing guns is increased, when a bottom blowing hole is covered by a slag layer or a bottom blowing spray gun is corroded to a certain degree, the heat exchange technology of the bottom blowing guns is adopted, the used spray gun is sealed, the bottom blowing guns are installed at open holes at other bottom blowing positions, and therefore the bottom blowing effect of the whole furnace service is guaranteed.
The on-line hot replacement technology of the bottom blowing ventilating element refers to the rapid integral replacement of the bottom blowing ventilating element in the hot state of the converter. The equipment mainly comprises a movable operation platform frame, a flange plate connecting system, a drilling system (comprising a motor control system, a drilling support, a guide rail and the like), a cooling water system and the like. When in heat exchange operation, the movable operation platform frame is placed on the operation platform of the converter, one side of the movable operation platform frame is close to the bottom of the converter, the movable operation platform frame is an operation platform for bottom blowing online heat exchange, the flange plate connects and fixes the drilling system at the bottom of the converter, the rotation of the drill cylinder and the drill bit of the motor is controlled, the drill cylinder and the drill bit system are driven to be pushed forwards on the guide rail, cooling water enters from the tail part of the drill cylinder and flows out from the drill bit to cool the operation of the drill bit.
The on-line hot replacement process of the bottom blowing ventilation element comprises the steps of tightly connecting and fixing replacement equipment to the position of the bottom ventilation element through a flange plate, introducing cooling water into a drill cylinder, starting a control motor, driving the drill cylinder to advance in a rotating mode by the motor, enabling the drill cylinder to be longer than the bottom of the furnace, enabling a drill bit to drill through refractory materials at the position of the bottom of the furnace, withdrawing the drill cylinder, and placing a new ventilation element into a drill hole to achieve the purpose of replacement.
However, in the process of bottom-blowing heat exchange, due to the error between the diameter of the drill and the diameter of the bottom-blowing spray gun, a gap of 1.0-2.0mm generally exists, if the problems of inaccurate positioning flange of constructors, inaccurate drilling operation and the like occur, the gap is larger than 2.0mm, the refractory material outside the bottom-blowing spray gun thermally expands due to the high temperature effect during the furnace baking, and if the thermal expansion of the bottom-blowing spray gun is not enough to enable the bottom-blowing spray gun to be tightly combined with the drilled hole, the risk of steel leakage still exists; and the condition that the installed bottom-blowing spray gun is not perpendicular to the furnace bottom can also occur, so that the bottom-blowing stirring flow field after the bottom-blowing element is subjected to heat replacement is not consistent with the designed bottom-blowing flow field, and the bottom-blowing effect is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a device in nozzle and brick cup clearance behind maintenance end-blown quick change to because the gap between end-blown spray gun and brick cup is too big when solving among the prior art end-blown component heat and changing, the end-blown spray gun thermal expansion is not enough to make the end-blown spray gun and the drilling between the clearance can not combine closely, has the problem of bleed-out risk.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a device for maintaining nozzle and brick cup clearance behind bottom-blowing quick change, is including maintaining main part and bulldozing device, it includes the closed barrel of one end opening other end to maintain the main part, the open end of barrel is equipped with twist grip, safety shield and port in proper order and is equipped with the barrel screw thread, be equipped with a plurality of mud holes on the barrel wall of cylinder, bulldozing device includes that both ends are equipped with helicitic texture's bracing piece, and the bracing piece is hollow tubular structure, the one end of bracing piece be equipped with in proper order the boosting handle, with the seal closure of barrel screw thread looks adaptation, the other end of bracing piece is equipped with the push.
Further, still include belt cleaning device, belt cleaning device is including the hollow cylinder cleaning head that is equipped with brush and apopore, be equipped with the connection screw socket of being connected with the bracing piece on the cleaning head.
Furthermore, the hairbrushes and the water outlet holes are multiple and are arranged on the cleaning head in a staggered mode.
Further, the outer diameter of the cylinder is consistent with that of the converter bottom blowing spray gun.
Furthermore, the rotating handle and the boosting handle are respectively symmetrically arranged and are cylindrical.
The utility model has the advantages that: the gap between the nozzle and the brick cup after the bottom blowing quick change can be effectively maintained, the safety of the bottom blowing element after the bottom blowing element is subjected to the hot change is further improved, and the risk of steel leakage at the part of the bottom blowing element is greatly reduced; the condition that the installed bottom blowing spray gun is not perpendicular to the furnace bottom is avoided, the bottom blowing stirring flow field after the bottom blowing element is thermally replaced is ensured to be consistent with the designed bottom blowing flow field, and the bottom blowing effect is optimal; the local uneven position on the inner wall of the bottom-blown brick cup after drilling can be completely smoothed, and no interlayer or hole is generated.
Drawings
FIG. 1 is a schematic structural view of a device for maintaining a gap between a nozzle and a brick cup after bottom-blowing quick change according to the present invention;
FIG. 2 is a schematic view of the structure of the cleaning device of the present invention;
fig. 3 is a usage status diagram of the device for maintaining the gap between the nozzle and the brick cup after the bottom blowing quick change.
In the figure: 1. a barrel; 2. rotating the handle; 3. a mud outlet hole; 4. a safety barrier; 5. threading the cylinder; 6. pushing the plate; 7. a boost handle; 8. a rotary interface; 9. a water pipe; 10. supporting a tube; 11. sealing cover; 12. a connecting screw; 13. a water outlet hole; 14. a brush; 15. a cleaning head; 16. bottom blowing brick bases; 17. corundum fire clay.
Detailed Description
The following provides a more detailed description of the present invention with reference to the accompanying drawings.
As shown in fig. 1 and 2, the device for maintaining the gap between the nozzle and the brick cup after the bottom blowing quick change comprises a maintenance main body and a pushing device, wherein the maintenance main body comprises a barrel body 1 with an opening at one end and a closed end at the other end, the outer diameter of the barrel body 1 is consistent with that of a converter bottom blowing spray gun, the thickness of the barrel body is 3mm, the material is Q235B steel, after the gap between the bottom blowing spray gun and the bottom blowing brick cup is maintained, the inner wall of a repaired drilled hole can be ensured to be completely consistent with the outer diameter of a refractory material outside the bottom blowing spray gun, and after the bottom blowing spray gun is inserted and installed, the gap between the bottom blowing spray gun and the brick cup can be ensured to be less than 0.05 mm; the opening end of the barrel body 1 is sequentially provided with a rotating handle 2 and a safety baffle 4, a barrel body screw thread 5 is arranged at the port of the opening end of the barrel body 1, the barrel wall of the barrel body 1 is provided with a plurality of mud outlet holes 3, the safety baffle 4 is connected to the outer side of the barrel body 1 and is 50mm higher than the barrel body, and the distance from the rotating handle 2 is 100 mm; the diameter of the mud outlet hole 3 is 20mm, the pushing device comprises a support rod 10 with two ends provided with thread structures, the support rod 10 is of a hollow tubular structure, and a hollow channel is used as a cleaning water flow channel during cleaning; the utility model discloses a support rod, including bracing piece 10, barrel screw thread 5, sealing cover 11, sealing cover 10, the one end of bracing piece 10 is equipped with boosting handle 7 in proper order, and the screw thread of barrel screw thread 5 and the screw thread of sealing cover 11 are the same size supporting use, and sealing cover 11 center division has the diameter to be unanimous with the diameter of bracing piece 10, and the suit can be followed bracing piece 10 and reciprocated, screws up sealing cover 11 on barrel 1 when operating bracing piece 10, can prevent bracing piece 10 and push pedal 6 from taking out from barrel 1, the other end of bracing piece 10 is equipped with push pedal 6, and the diameter of push pedal 6 is unanimous with the diameter of barrel 1, and push pedal 6 installs the tip at bracing piece 10 and passes through connecting bolt and connect, twist grip 2 and boosting handle 7 bilateral symmetry respectively set up and are cylindrical, make things convenient for operating personnel to hold tightly and make power, and the symmetry setting helps operating personnel bilateral, the material is Q235B steel, the diameter is 20mm, and the length of a single side is 180 mm.
Still include belt cleaning device, belt cleaning device is including the hollow cylinder cleaning head 15 that is equipped with brush 14 and apopore 13, and the diameter is 50mm, brush 14 and apopore 13 are a plurality of and crisscross setting on cleaning head 15, are convenient for hydroenergy when wasing spills the barrel inner wall uniformly, and brush 14's length just reaches barrel 1's internal diameter department, and the brush can be sanitized and wash speed faster when the rotatory brush inner wall, and 14 mounting hole diameters of brush are 15mm, and 13 diameters of apopore are 10mm, be equipped with the connection screw thread 12 of being connected with bracing piece 10 on the cleaning head 15, connect screw thread 12 and the supporting use of bracing piece 10, and the screw thread size is unanimous, and the back is dismantled to the push pedal, and cleaning head 15 can be installed to bracing piece 10 with connection screw thread 12, and the hollow formation of bracing piece 10 washs the rivers flow path with cleaning head 15.
As shown in figure 3, after the converter bottom blowing quick-change drilling is finished, a cylinder 1 is inserted into a hole of a bottom blowing brick cup 16, corundum fire clay 17 which is uniformly mixed by adding water is filled into the cylinder 1, the corundum fire clay 17 is extruded to the outer wall of the cylinder 1 through an extruding device, the corundum fire clay 17 is repeatedly extruded after multiple times of loading, corundum fire clay 17 is fully distributed between the outer wall of the cylinder 1 and the bottom blowing brick cup 16, at the moment, the cylinder 1 is driven to rotate through the rotation of a rotating handle 2, the corundum fire clay 17 between the outer wall of the cylinder 1 and the bottom blowing brick cup 16 is leveled, the corundum fire clay 17 is leveled on the inner wall of a hole of the bottom blowing brick cup 16, then the cylinder 1 is drawn out, a bottom blowing spray gun is inserted into the hole of the corundum fire clay 17 whose inner wall is leveled and fixed by a flange, a bottom blowing spray gun and a blowing pipeline are connected, a mounting platform is lifted to a placing position, the converter is swung to a zero position, 0.5-1t is added into the converter in batches from a coke high position, 10-20kg kerosene, shaking the converter to a waste steel adding position, adding the waste steel from the converter mouth at one time by using a waste steel hopper, throwing the ignited fire handle from the converter mouth of the converter into the converter to finish ignition, shaking the converter to a zero position, manually turning on oxygen by an oxygen lance, manually adjusting the oxygen flow to ensure that the original magnesia carbon brick at the bottom of the converter, the repaired corundum fire clay and the refractory material outside the spray gun are tightly sintered at high temperature, adding molten iron for smelting after drying the converter, placing the extracted barrel 1 beside a water pipe 9, opening a sealing cover 11, the pushing device is pulled out by the boosting handle 7, the pushing plate 6 connected with the head part of the supporting rod 10 is unscrewed, install belt cleaning device in push pedal 6's position, pass through rotary joint 8 at the bracing piece 10 afterbody and connect water pipe 9, insert barrel 1 with cleaning head 15 in, cover closing cap 11, open water and begin to wash, the cleaning process drives cleaning head 15 rotation or front and back pull cleaning head 15 through boost handle 7 and makes the cleaning performance better.
The utility model is suitable for a converter of bottom blowing quick change is taken to 50-300 tons, under the unchangeable condition of structure, the size of each part can be adjusted according to the diameter of bottom blowing spray gun in the device.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a device in nozzle and brick cup clearance after maintaining bottom blowing quick change which characterized in that: including maintaining main part and thrust unit, it includes one end opening other end confined barrel (1) to maintain the main part, the open end of barrel (1) is equipped with twist grip (2), safety shield (4) and port in proper order and is equipped with barrel screw (5), be equipped with a plurality of mud holes (3) on barrel (1) section of thick bamboo wall, thrust unit includes that both ends are equipped with threaded structure's bracing piece (10), the one end of bracing piece (10) is equipped with boosting handle (7) in proper order, with sealing cover (11) of barrel screw (5) looks adaptation, the other end of bracing piece (10) is equipped with push pedal (6).
2. The device for maintaining the gap between the nozzle and the brick cup after the bottom blowing quick change as claimed in claim 1, wherein: still include belt cleaning device, belt cleaning device is including hollow cylinder cleaning head (15) that are equipped with brush (14) and apopore (13), be equipped with on cleaning head (15) and be connected screw socket (12) of being connected with bracing piece (10).
3. The device for maintaining the gap between the nozzle and the brick cup after the bottom blowing quick change as claimed in claim 2, wherein: the hairbrushes (14) and the water outlet holes (13) are multiple and are arranged on the cleaning head (15) in a staggered mode.
4. The device for maintaining the gap between the nozzle and the brick cup after the bottom blowing quick change as claimed in claim 1, wherein: the outer diameter of the cylinder body (1) is consistent with that of a converter bottom blowing spray gun.
5. The device for maintaining the gap between the nozzle and the brick cup after the bottom blowing quick change as claimed in claim 1, wherein: the rotating handle (2) and the boosting handle (7) are respectively symmetrically arranged and are cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921755740.0U CN211079221U (en) | 2019-10-18 | 2019-10-18 | Device for maintaining gap between bottom-blowing quick-change nozzle and brick cup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921755740.0U CN211079221U (en) | 2019-10-18 | 2019-10-18 | Device for maintaining gap between bottom-blowing quick-change nozzle and brick cup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211079221U true CN211079221U (en) | 2020-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921755740.0U Expired - Fee Related CN211079221U (en) | 2019-10-18 | 2019-10-18 | Device for maintaining gap between bottom-blowing quick-change nozzle and brick cup |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211079221U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110669897A (en) * | 2019-10-18 | 2020-01-10 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Device and method for maintaining gap between nozzle and brick cup after bottom blowing quick change |
-
2019
- 2019-10-18 CN CN201921755740.0U patent/CN211079221U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110669897A (en) * | 2019-10-18 | 2020-01-10 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Device and method for maintaining gap between nozzle and brick cup after bottom blowing quick change |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200724 Termination date: 20211018 |
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| CF01 | Termination of patent right due to non-payment of annual fee |