CN1772927A - Multihole oxygen gun sprayer for converter - Google Patents
Multihole oxygen gun sprayer for converter Download PDFInfo
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- CN1772927A CN1772927A CN 200510086893 CN200510086893A CN1772927A CN 1772927 A CN1772927 A CN 1772927A CN 200510086893 CN200510086893 CN 200510086893 CN 200510086893 A CN200510086893 A CN 200510086893A CN 1772927 A CN1772927 A CN 1772927A
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- oxygen
- shower nozzle
- spray orifice
- pipe
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Abstract
The present invention provides one kind of multihole oxygen gun sprayer for converter, and belongs to the field of converter steel-making technology. The sprayer includes spraying holes, end surface, outer pipe, middle layer water-isolating pipe, oxygen distributing tip, flutes and oxygen pipe. Each of the spraying holes has axis not crossed and in some angle to the central line of the oxygen gun and in some angel to the axis of the oxygen gun sprayer. The sprayer is provided with O-ring. The present invention has the advantages of forming eddy airflow acting on the molten pool resulting in improved stirring effect and shortened mixing time, less sputtering, short oxygen supplying time, early slag smelting, and slag splashing wall protection.
Description
Technical field
The invention belongs to the converter steeling technology field, a kind of oxygen lance blow head of coverter pig porous axis rotation is provided, be applicable to contemporary converter steelmaking production technique.
Technical background
Oxygen lance blow head is one of key equipment in the convertor steelmaking process, and oxygen is blown in the converter by shower nozzle, reaches the purpose that decarburization heats up, smelts into steel with melt tank reaction.The development of oxygen lance blow head has been experienced by the single hole shower nozzle to porous nozzle again to the process of complicated porous nozzle.Along with the increase of converter capacity and the raising that end product quality is required, various novel porous nozzles are put among the application, have promoted the development of oxygen coverter technology, and iron and steel output and metallurgical effect have all had significant raising and improvement.In convertor steelmaking process, the oxygen jet characteristic has direct material impact to final metallurgical effect, and the oxygen lance blow head structures shape the oxygen jet characteristic.The purpose of the oxygen lance blow head structure being improved design just is to obtain better oxygen jet characteristic, thereby strengthens metallurgical effect, improves the output and the quality of steel.
Along with popularizing of top and bottom combined blown converter steelmaking technology,, therefore, can utilize the characteristics of top blow oxygen lance to perform on the slag splashing owing to increased bottom blowing to the molten bath agitating function.Technology of Slag Splashingfor Furnace Maintenance is to add slag supplying agent behind converter tapping, forms the MgO slag, uses the oxygen rifle at low rifle position winding-up high pressure nitrogen again, and dry slag is splashed on the furnace lining, forms protective layer.Slag splashing achieves notable results abroad, need be in conjunction with the big characteristic of domestic converter capacity difference, and exploitation is fit to the Technology of Slag Splashingfor Furnace Maintenance of China's converter.The oxygen rifle design of Technology of Slag Splashingfor Furnace Maintenance changes little, adopts when hanging down the rifle bit manipulation and can spatter slag.But, increase nozzle hole number and size, can increase the homogeneity that slag covers on every side in stove, improve the effect of slag splashing.Therefore top rifle structure, nitrogen flushing pressure, rifle position and the time etc. of combined blown converter, have designed novel eddy flow oxygen lance blow head to spattering the influence of slag effect, can optimize steel-making blowing operation, improve the effect of splashing slag in converter.
Summary of the invention
The objective of the invention is to: the oxygen lance blow head (abbreviating swirl flow nozzle as) that a kind of coverter pig porous axis rotation is provided, be specifically related to the optimization of shower nozzle gas-jet characteristic, can improve smelting efficient with this shower nozzle, can also play and reduce splash, shorten oxygen supply time, change the effect of slag in advance, simultaneously, can also improve the effect of splashing slag in converter.
Of the present invention theing contents are as follows:
Novel porous axis rotation Oxygen Lance Nozzle for Converter, shower nozzle 1 comprise spray orifice 2, shower nozzle end face 3, shower nozzle outer tube 4, middle level marine riser 5, oxygen distribution tip 6, groove 7 and oxygen pipe 8.
Have 3～6 spray orifices 2 on shower nozzle end face 3, each spray orifice 2 is Laval nozzle, the design Mach 2 ship 1.6～2.5 that shrinks the back expanding earlier, and the spray orifice outlet is distributed on the shower nozzle end face 3 same circumference.Each spray orifice 2 axis and oxygen rifle medullary ray are non-intersect, and one-tenth angle α, and its value is 8～18 degree.Each spray orifice becomes angle β with oxygen lance blow head axis plane, and its value is 5～15 degree.Oxygen distribution most advanced and sophisticated 6 is corresponding with internal layer oxygen pipe 8 inwalls, forms the contraction pipeline of each spray orifice 2.In addition, the oxygen pipe of common shower nozzle and the interior pipe of oxygen rifle are the modes that adopts welding, and this shower nozzle is to adopt " O " shape sealing-ring, " O " shape sealing-ring is packed into behind the sealed groove 7 (being made up of 3～5 grooves), its cross section is subjected to 15～30% compression set, be displaced downwardly to one side of groove 7 in the effect of lubricating oil, sealing needs the gap of sealing, reaches sealing purpose.Internal layer oxygen pipe 8 adopts the seals with elastometic washer of " O " shape, and middle level marine riser 5 is slidingly connected, and the Compound Steel pipe that makes the oxygen rifle is in assembling with can be capable of expansion and contraction in using.
Pipe adopts the oxygen rifle of this structure easy to assembly with shower nozzle oxygen pipe coupling place in the oxygen rifle, long service life.This sealing and compensation way are that use was maximum during present oxygen rifle designed and produced, and also are state-of-the-art, because:
(1) round section joint ring simple shape is made easily, and is with low cost, easy to use.
(2) elasticity and the oilness of " O " shape sealing-ring are good. and three layers of pipe are capable of expansion and contraction, can eliminate the influence that thermal stresses butt welded seam in the use of oxygen rifle etc. is located, and improve work-ing life.
(3) shower nozzle is " O " shape sealing-ring with connecting of oxygen rifle oxygen pipe, when changing shower nozzle, only need weldering outer tube one deck weld bond, alleviated working strength of workers, efficient and convenient, and realize the vertical replacing shower nozzle of oxygen rifle, save the maintenance place, various operations such as all very long oxygen rifle will being fallen, slings when avoiding changing shower nozzle have at every turn been saved the time greatly.
In order to guarantee to seal and the reliability of expansion compensation, when design, also should be noted that following problem:
(1) material of envelope groove and sealed tube part is stainless steel or chromium plating carbon steel, influences sealing effectiveness in case groove and sealed tube get rusty.
(2) size of sealed groove must satisfy " O " shape sealing-ring and packs into behind the sealed groove, and its cross section is subjected to 15%～30% compression set.If compression set is little, it is unreliable to seal, otherwise, the tension phenomenon then appears, and the assembling of oxygen supply rifle is made troubles.
The invention has the advantages that: the axial impulse force of oxygen lance blow head of porous axis rotation is basic identical, and radially impulse force is smaller, and tangential impulse force has only swirl flow nozzle just peculiar, thereby, form vortex gas-flow and act on the molten bath, the molten bath can be rotated, improved mixing effect, the time that is mixed is shortened.The rifle position is low more, and the time that is mixed is short more, and the mixing effect of swirl flow nozzle obviously is better than common shower nozzle.The impact area of swirl flow nozzle increases, and the stream thigh is less to disalignment.When slag splashing is operated, because low operation rifle position, jet is bigger to the shock strength in molten bath, the degree of depth and the radial surface speed that form pit are enough to make drop that splash takes place when pit surface is separated, because the effect of tangential impulse force, can impel the dry slag spiral to rise, help improving and spatter the slag homogeneity, the splash phenomenon is few, and the existence of tangential impulse force, the impact depth and the impact area that more can excite the rotation in molten bath and improve the molten bath have reached and have reduced splash, shorten oxygen supply time, change the effect of slag in advance.
Description of drawings
Fig. 1 is the structure B-B synoptic diagram of the oxygen lance blow head of porous axis rotation.Wherein, shower nozzle 1, spray orifice 2, shower nozzle end face 3, shower nozzle outer tube 4, middle level marine riser 5, oxygen distribution tip 6, groove 7 and oxygen pipe 8.
Fig. 2 is the A-A sectional view.Wherein, shower nozzle 1, spray orifice 2.
Embodiment
Fig. 1, Fig. 2 are an embodiment of the oxygen lance blow head (abbreviating swirl flow nozzle as) of porous axis rotation, and shower nozzle 1 comprises spray orifice 2, shower nozzle end face 3, shower nozzle outer tube 4, middle level marine riser 5, oxygen distribution tip 6, groove 7 and oxygen pipe 8.Have 4 spray orifices on shower nozzle end face 3, each spray orifice is the Laval nozzle that shrinks the back expanding earlier, and the spray orifice outlet is distributed on the shower nozzle end face 3 same circumference.Each spray orifice axis and oxygen rifle medullary ray are non-intersect, and become angle α.Each spray orifice becomes angle β with oxygen lance blow head axis plane.Oxygen distribution most advanced and sophisticated 6 is corresponding with oxygen pipe 8 inwalls, forms the contraction pipeline of each spray orifice 2, guarantees to obtain stable oxygen jet supersonic characteristic.Shower nozzle is that its cross section generally is compressed distortion after adopting 3 " O " shape sealing-rings to be respectively charged into the three seals groove, is displaced downwardly to one side of groove 7 in the effect of lubricating oil, and closing gap reaches sealing purpose.Internal layer oxygen pipe 8 adopts the seals with elastometic washer of " O " shape, and middle level marine riser 5 adopts and is slidingly connected, and shower nozzle outer tube 4 adopts welding process with oxygen rifle outer tube, and the Compound Steel pipe that makes the oxygen rifle is in assembling with can be capable of expansion and contraction in using.
Claims (4)
1. the oxygen lance blow head of coverter pig porous axis rotation, it is characterized in that: shower nozzle (1) comprising: spray orifice (2), shower nozzle end face (3), shower nozzle outer tube (4), middle level marine riser (5), oxygen distribute most advanced and sophisticated (6), groove (7), oxygen pipe (8); Have 3～6 spray orifices on the shower nozzle end face (3), each spray orifice is the Laval nozzle that shrinks the back expanding earlier, Mach 2 ship 1.6～2.5, and the spray orifice outlet is distributed on the same circumference of shower nozzle end face (3).
2. according to the described oxygen lance blow head of claim 1, it is characterized in that: the axis and the oxygen rifle medullary ray of spray orifice (2) are non-intersect, form angle α, and its value is 8～18 degree; Each spray orifice becomes angle β with oxygen lance blow head axis plane, and its value is 5～15 degree.
3. according to the described oxygen lance blow head of claim 1, it is characterized in that: the oxygen pipe (8) of shower nozzle adopts the sealing of " O " shape sealing-ring with the interior pipe of oxygen rifle, " O " shape sealing-ring is packed into behind the sealed groove (7), its cross section is subjected to 15～30% compression set, be displaced downwardly to one side of groove (7) in the effect of lubricating oil, sealing needs the gap of sealing, reaches sealing purpose, and sealed groove can have 3～5 grooves.
4. according to the described oxygen lance blow head of claim 1, it is characterized in that: oxygen distribution most advanced and sophisticated (6) is corresponding with internal layer oxygen pipe (8) inwall, forms the contraction pipeline of each spray orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510086893 CN1772927A (en) | 2005-11-17 | 2005-11-17 | Multihole oxygen gun sprayer for converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510086893 CN1772927A (en) | 2005-11-17 | 2005-11-17 | Multihole oxygen gun sprayer for converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1772927A true CN1772927A (en) | 2006-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510086893 Pending CN1772927A (en) | 2005-11-17 | 2005-11-17 | Multihole oxygen gun sprayer for converter |
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| CN (1) | CN1772927A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168162A (en) * | 2011-03-22 | 2011-08-31 | 熊烈强 | Air cyclone cooling type wire feeding gun |
| CN102994690A (en) * | 2012-11-19 | 2013-03-27 | 河北钢铁股份有限公司承德分公司 | Method for applying cyclone oxygen lance in converter to extract vanadium and cyclone oxygen lance |
| CN103993127A (en) * | 2014-05-30 | 2014-08-20 | 河北唐银钢铁有限公司 | Oxygen lance nozzle with concentrated streams |
| CN106868315A (en) * | 2017-04-06 | 2017-06-20 | 赤峰云铜有色金属有限公司 | A kind of lift for top-blown bath rotates oxygen rifle |
| CN108977617A (en) * | 2018-09-03 | 2018-12-11 | 南京钢铁股份有限公司 | One kind scrubbing clinker cross-drilled hole oxygen rifle and its brushing method |
| CN109852759A (en) * | 2019-02-12 | 2019-06-07 | 山东钢铁股份有限公司 | Protecting method with splash slag for cyclone oxygen lance spray head |
-
2005
- 2005-11-17 CN CN 200510086893 patent/CN1772927A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168162A (en) * | 2011-03-22 | 2011-08-31 | 熊烈强 | Air cyclone cooling type wire feeding gun |
| CN102168162B (en) * | 2011-03-22 | 2012-07-18 | 熊烈强 | Air cyclone cooling type wire feeding gun |
| CN102994690A (en) * | 2012-11-19 | 2013-03-27 | 河北钢铁股份有限公司承德分公司 | Method for applying cyclone oxygen lance in converter to extract vanadium and cyclone oxygen lance |
| CN103993127A (en) * | 2014-05-30 | 2014-08-20 | 河北唐银钢铁有限公司 | Oxygen lance nozzle with concentrated streams |
| CN103993127B (en) * | 2014-05-30 | 2016-03-30 | 河北唐银钢铁有限公司 | A kind of oxygen lance blow head with concentrated a fluid stream |
| CN106868315A (en) * | 2017-04-06 | 2017-06-20 | 赤峰云铜有色金属有限公司 | A kind of lift for top-blown bath rotates oxygen rifle |
| CN108977617A (en) * | 2018-09-03 | 2018-12-11 | 南京钢铁股份有限公司 | One kind scrubbing clinker cross-drilled hole oxygen rifle and its brushing method |
| CN109852759A (en) * | 2019-02-12 | 2019-06-07 | 山东钢铁股份有限公司 | Protecting method with splash slag for cyclone oxygen lance spray head |
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