CN105256107B - A kind of annular groove cluster fluidic nozzle structure - Google Patents
A kind of annular groove cluster fluidic nozzle structure Download PDFInfo
- Publication number
- CN105256107B CN105256107B CN201510833331.8A CN201510833331A CN105256107B CN 105256107 B CN105256107 B CN 105256107B CN 201510833331 A CN201510833331 A CN 201510833331A CN 105256107 B CN105256107 B CN 105256107B
- Authority
- CN
- China
- Prior art keywords
- shower nozzle
- outer tube
- annular groove
- core pipe
- centre bore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
- Nozzles (AREA)
Abstract
The present invention provides a kind of annular groove cluster fluidic nozzle structure, including shower nozzle core pipe and shower nozzle outer tube, the shower nozzle outer tube offers centre bore and the throttle orifice around center pore size distribution, in the shower nozzle core pipe insertion centre bore, and positioned between shower nozzle outer tube by location structure, the shower nozzle core pipe gabarit forms concrete dynamic modulus annular groove shape gas passage and tapered annular gas passage with profile surface in shower nozzle outer tube centre bore.Around with flowing, making, central supersonic jet extension and decay are smaller, and supersonic jet is longer for outer layer increase of the invention in supersonic jet.Apply in RH vacuum refining furnace top guns, penetration depth and stirring intensity of the oxygen jet to molten bath can be improved, simultaneously because effluxvelocity decay delays, the blowing rifle position of oxygen rifle can be improved, without influenceing impact depth of the jet to molten steel, the service life of oxygen gun sprayer is extended.
Description
Technical field
The present invention relates to the injection apparatus for being used to generate the long oxygen stream of supersonic speed in metallurgy industry, more particularly to a kind of annular groove
Cluster fluidic nozzle structure.
Background technology
RH equipment for vacuum refining is a kind of Ferrous Metallurgy technology that last century the fifties grow up, except vacuum outgas
Outside outer function, also oxygen decarburization function so that the extensive smelting of ultra-low-carbon steel is possibly realized.It realizes oxygen decarburization function
Device be originally arranged on vacuum tank bottom, be arranged on later in the middle part of vacuum tank, be finally arranged at the top of vacuum tank, turn into water cooling
Top blow oxygen lance.In the prior art, either RH-KTB top guns, RH-MFB top guns, RH-MESID top guns, RH-PB top guns or in
State's patent 200420027046.4,200610076151.0,200820174977.5,200820174973.7,
200820174973.7th, the top gun involved by 201110000083.0,201210346652.1,201310431081.6 or spray
Head, typically it is distributed in using circular hole convergent-divergent channel structure, i.e. convergent-divergent channel in center, blast tube outside convergent-divergent channel
Side, it is this kind of to limit the range for further improving supersonic jet, i.e., need top gun dropping to molten steel in the oxygen decarburization phase
2.5~3.5m position on face, below 1m even 0.1m or so are dropped in the powder injection desulphurization phase and implement to dust, also, oxygen blast and spray
Powder can not typically be carried out simultaneously, undoubtedly extend the process cycle of vacuum refining, and obstruction realizes high rifle position refining, reduces molten steel spray
Splash the process requirements with pipette tips dry slag.Existing RH vacuum outgas and oxygen decarburization, rifle position is not high enough can not also to avoid pipette tips from gluing
Slag, supersonic flows of oxygen diverging can not form very much effectively impact to molten steel surface and penetrate molten steel face etc. until injecting soon, particularly spray
Powder needs to enter vacuum system corrosion pipeline closer to molten steel face and pulvis so that technology of dusting is difficult to promote in RH.
Chinese Patent Application No. 2015102313132,2014103868764,2014103876370,2014103868800
Etc. the circumferential weld involved by patent of invention and ring slot top gun structure so that oxygen blast and the technical process dusted can be carried out simultaneously,
And do not have to reduce rifle position again during powder injection desulphurization.Even if supersonic airstream caused by this new top gun structure can wrap up powder
Agent and combustion gas, but it is the same still with the supersonic jet of other spray guns, it is blown apart from relatively short and scattered, the diffusion of jet
Make it that oxygen jet is small to the impulsive force in molten bath with decay, hinder molten steel flow on the contrary in the shallow hole that molten steel surface is formed, influence
Mixing time.
For the utilization for increasing the reaction interface of pulvis and molten steel in RH refining process, shortening injecting time, improving pulvis
Rate, reduce RH equipment in refractory material consume, to greatest extent remove molten steel in be mingled be vacuum refining process must
Ask.But existing RH vacuum refining top guns structure limits this process requirements, the hair of more efficient RH refinery practices is constrained
Exhibition, it is therefore necessary to study and a kind of support oxygen blast, dust, the spray gun spray nozzle knot of the refinery processes such as combustion heating progress simultaneously
Structure.
The content of the invention
The deficiencies in the prior art in view of the above, it is an object of the invention to provide a kind of suitable RH vacuum refinings etc. are more
A kind of annular groove cluster fluidic nozzle structure that individual field uses, to reach raising range oxygen, stifled rifle probability is reduced, extending it makes
With the life-span, the purpose for being blown efficiency is improved.
In order to achieve the above objects and other related objects, technical solution of the present invention is as follows：
A kind of annular groove cluster fluidic nozzle structure, including shower nozzle core pipe and shower nozzle outer tube, during the shower nozzle outer tube offers
Heart hole and the throttle orifice around center pore size distribution, the shower nozzle core pipe are inserted in centre bore, and by fixed between shower nozzle outer tube
Bit architecture positions, and forms concrete dynamic modulus annular groove shape gas passage and cone in the shower nozzle core pipe external profile surface and shower nozzle outer tube between profile surface
Shape annular gas passageway.
Using said structure, concrete dynamic modulus annular groove shape gas passage and tapered annular gas passage can make oxygen when passing through
Obtain supersonic speed to accelerate, and flowed by the oxygen of shower nozzle outer tube throttle orifice outflow in the outer layer ring of the main oxygen of supersonic speed around adjoint, in making
Heart supersonic jet extends and decay is smaller, and supersonic jet is longer, improves penetration depth and stirring of the oxygen jet to molten bath
Intensity, simultaneously because effluxvelocity decay delays, the blowing rifle position of oxygen rifle can be improved, it is deep without influenceing impact of the jet to molten steel
Degree, extend the service life of oxygen gun sprayer.Oxygen flows out the outer layer ring to be formed from throttle orifice and can also taken off around with stream with molten steel
CO burning caused by carbon generates carbon dioxide, the resistance to material of liberated heat heating, vacuum groove, reduces reduction of speed under molten steel temperature
Degree.The combusting carbon monoxide heating, vacuum groove i.e. in smelting process, gap injection combustion gas and oxygen combustion heating vacuum tank are smelted,
Reach the purpose for eliminating residual steel.The structure can apply to the various shower nozzles such as converter oxygen gun, electric furnace carbon oxygen lance, pulverized coal injection.
As preferred：Profile surface is rotated around central axis by three sections of continuous buses and formed in the shower nozzle outer tube centre bore, the
One section of bus forms the reducing conical bore shunk in cross section, second segment bus and centerline axis parallel with central axis into positive angle
Isometrical cylindrical hole is formed, the 3rd section of bus forms the reducing conical bore of cross section expansion, positioning knot with central axis into negative angle
Structure is located between cylindrical hole and the shower nozzle core pipe of shower nozzle outer tube centre bore so that the second segment and sprinkler core of shower nozzle outer tube centre bore
Concrete dynamic modulus annular groove shape gas passage, the reducing conical bore of shower nozzle outer tube and the shower nozzle core pipe gabarit shape are formed between pipe external profile surface
Into the tapered annular gas passage of Varied section product, contractile ring cone section, multigap annular groove are formed continuously respectively from oxygen inlet to outlet
Section, expanded ring cone section.
As preferred：The location structure is positioning rib ridge, and the positioning rib ridge is arranged on shower nozzle outer tube or sprinkler core
Guan Shang.
As preferred：The cylindrical hole inner wall even distribution of the shower nozzle outer tube centre bore has the groove of 3 and the above, and adjacent two is recessed
The positioning rib ridge is formed between groove.
As preferred：On shower nozzle core pipe external profile surface corresponding with the cylindrical hole of shower nozzle outer tube centre bore it is circumferentially distributed have it is more
Individual cancave cambered surface, the positioning rib ridge is formed between adjacent two cancave cambered surface.
As preferred：Mounting hole is further opened with the shower nozzle outer tube, the mounting hole is sealedly provided with intermediate sleeve
Pipe.The auxiliary devices such as camera, flame detecting device, gas ignition device can be installed in multiple intermediate casings.
As preferred：The mounting hole is stepped hole, and the mounting hole site is between centre bore and throttle orifice, or the section
Discharge orifice is between centre bore and mounting hole.
As preferred：Also include with shower nozzle outer coaxial tube set water cooling outer tube, marine riser, water-cooled inner tube, gas inner tube,
The water cooling outer tube and water-cooled inner tube and shower nozzle outer tube welded seal；The gas inner tube is with the grafting of shower nozzle core pipe and close by elasticity
Seal ring seals.
As preferred：The gross area at the concrete dynamic modulus annular groove shape gas passage section minimum aperture is equal to design gas stream
The lower velocity of sound air-flow throat area of amount, tapered annular gas passage is in total circular space gross area of conical bore exit section etc.
In design under gas flow design Mach number corresponding to supersonic airstream discharge area.
As preferred：Shower nozzle core pipe external profile surface corresponding with the reducing circular cone hole section that shower nozzle outer tube centre bore shrinks is
The face of cylinder.
As preferred：Shower nozzle core pipe external profile surface corresponding with the reducing circular cone hole section that shower nozzle outer tube centre bore shrinks is
Circular conical surface.
As preferred：Shower nozzle core pipe external profile surface corresponding with the reducing circular cone hole section that shower nozzle outer tube centre bore expands is
Circular conical surface.
As preferred：Shower nozzle core pipe external profile surface corresponding with the reducing circular cone hole section that shower nozzle outer tube centre bore expands is
The face of cylinder.
As described above, the beneficial effects of the invention are as follows：
1st, passage is sealed by top gun using the vacuum refining top gun of nozzle structure of the present invention and enters RH vacuum chambers, Neng Gou
Oxygen decarburization and heating by O2 blowing and powder injection desulphurization are realized under vacuum condition to the molten steel in vacuum chamber, and under non-vacuum condition
Blow vacuum chamber combustion gas baking and heating removes cold steel.Oxygen, combustion gas, desulfurization powder can be made to be conveyed in each different passages
To RH vacuum chambers.
2nd, nozzle structure of the present invention can keep oxygen pressure under the same conditions, to increase with traditional RH equipment for vacuum refining
Big oxygen blast flow blows hole depth without increasing molten steel, and then improves decarbonization rate, improves the efficiency of RH equipment for vacuum refining.
3rd, nozzle structure of the present invention can be passed through protective gas so that desulfurized powder in powder injection desulphurization period in oxygen channel
Agent reaches molten steel surface in the case where being surrounded by the protective gas of surrounding, so as to reduce the pulvis amount siphoned away by vacuum suction, improves de-
The recovery rate of sulphur powder agent.
4th, nozzle structure of the present invention can improve and add in baking vacuum chamber or except cold steel period realizes pure oxygen or oxygen-enriched combusting
The thermal efficiency.
5th, nozzle structure of the present invention extends central supersonic jet in the outer layer increase of supersonic jet around with stream
And decay is smaller, supersonic jet is longer.Apply in RH vacuum refining furnace top guns, oxygen jet can be improved molten bath is worn
Saturating depth and stirring intensity, simultaneously because effluxvelocity decay delays, the blowing rifle position of oxygen rifle can be improved, without influenceing jet pair
The impact depth of molten steel, extend the service life of oxygen gun sprayer.
6th, aditus laryngis clogging can not occur when expanding with heat and contract with cold for the annular groove slit aditus laryngis of shower nozzle of the present invention, ensure shower nozzle
Flow.
7th, nozzle structure of the present invention can install video frequency pick-up head, directly observe space situation below shower nozzle.It can install
Gas ignition device and flame monitoring instrument, realize automatic ignition and safety protection function.
Brief description of the drawings
Fig. 1 is annular groove cluster fluidic nozzle structure schematic diagram in the embodiment of the present invention 1；
Fig. 2 is annular groove cluster fluidic head of the nozzle schematic diagram in the embodiment of the present invention 1；
Fig. 3 is the structural representation of shower nozzle outer tube in the embodiment of the present invention 1；
Fig. 4 is another distribution schematic diagram of throttle orifice in the embodiment of the present invention 1；
Fig. 5 is annular groove cluster fluidic nozzle structure schematic diagram in the embodiment of the present invention 2；
Fig. 6 is annular groove cluster fluidic head of the nozzle schematic diagram in the embodiment of the present invention 2；
Fig. 7 is the structural representation of shower nozzle core pipe in the embodiment of the present invention 2.
Piece mark explanation
1 shower nozzle core pipe
2 shower nozzle outer tubes
3 intermediate casings
4 water cooling outer tubes
5 marine risers
6 water-cooled inner tubes
7 gas inner tubes
8 concrete dynamic modulus annular groove shape gas passages
9 positioning rib ridges
2a centre bores
2b throttle orifices
2c stepped holes
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
Embodiment 1
As shown in Figure 1 to Figure 3, the present invention provides a kind of annular groove cluster fluidic nozzle structure, including the multilayer being coaxially disposed
Sleeve pipe, shower nozzle core pipe 1, shower nozzle outer tube 2, the multilayer sleeve are respectively water cooling outer tube 4, marine riser 5, water-cooled inner tube from outside to inside
6th, gas inner tube 7.Water cooling outer tube 4 and water-cooled inner tube 6 and the welded seal of shower nozzle outer tube 2, gas inner tube 7 and the grafting of shower nozzle core pipe 1
And by resilient sealing ring sealing.In the structure of the present invention, it is cooling water intake tunnel between water-cooled inner tube 6 and marine riser 5, water
It is oxygen channel, gas inner tube 7 between cooling water exhalant canal, water-cooled inner tube 6 and gas inner tube 7 that cold outer tube 4 and marine riser 5, which are,
Interior is blast tube, can also be passed through pulvis as needed.
The present invention's it is critical that shower nozzle outer tube 2 is provided with a centre bore 2a and multiple sections uniform around centre bore 2a
Discharge orifice 2b, throttle orifice 2b run through the upper and lower side of shower nozzle outer tube 2, and throttle orifice 2b quantity and the distance away from centre bore 2a can answer root
Set according to demand；Shower nozzle core pipe 1 is inserted in the centre bore 2a of shower nozzle outer tube 2, and positioning knot is provided between shower nozzle outer tube 2
Structure, so as to form concrete dynamic modulus annular groove shape gas passage 8, the concrete dynamic modulus annular groove shape gas between shower nozzle core pipe 1 and shower nozzle outer tube 2 leads to
Road 8 can make oxygen by when obtain supersonic speed and accelerate, by the throttle orifice 2b of shower nozzle outer tube 2 oxygen in the outer of the main oxygen of supersonic speed
Layer around with stream, make central supersonic jet extend and decay it is smaller, supersonic jet is longer, improve oxygen jet to molten bath
Penetration depth and stirring intensity, simultaneously because effluxvelocity decay delay, the blowing rifle position of oxygen rifle can be improved, without influence penetrate
The impact depth to molten steel is flowed, extends the service life of oxygen gun sprayer.The low velocity ring of the throttle orifice 2b of shower nozzle outer tube 2 outflows
Stream can also generate carbon dioxide with CO burning caused by molten steel decarburization, the resistance to material of liberated heat heating, vacuum groove, reduce
Molten steel temperature decrease speed.
Stepped hole 2c is provided among centre bore 2a and throttle orifice 2b in this example, intermediate casing 3 is installed in stepped hole 2c,
Intermediate casing 3 insert corresponding to shower nozzle outer 2 stepped hole 2c and by resilient sealing ring sealing, can install and take the photograph in intermediate casing 3
As auxiliary devices such as head, flame detecting device, gas ignition devices.Stepped hole 2c quantity can be 1~3, such as Fig. 4 institutes
Show, stepped hole 2c can be located at throttle orifice 2b outer rings in other embodiment (stepped hole is not shown in this figure) so that throttle orifice 2b
Closer to centre bore 2a, it so can equally play a part of outer layer ring around with stream.
In this example, profile surface is rotated around central axis by three sections of continuous buses and formed in the centre bore 2a of shower nozzle outer tube 2, first paragraph
Bus forms the reducing conical bore shunk in cross section with central axis into positive angle, and second segment bus is formed with centerline axis parallel
Isometrical cylindrical hole, the 3rd section of bus form the reducing conical bore of cross section expansion with central axis into negative angle.
Further as shown in Figures 2 and 3, shower nozzle core pipe 1 is corresponding with the isometrical cylindrical sections of centre bore 2a of shower nozzle outer tube 2 in this example
External profile surface be cancave cambered surface regular polygon cylinder, positioning rib ridge 9, the cancave cambered surface of shower nozzle core pipe 1 are formed between adjacent two cancave cambered surface
The concrete dynamic modulus annular groove shape gas passage 8, the reducing circle of shower nozzle outer tube 2 are formed with the centre bore 2a cylindrical sections of shower nozzle outer tube 2
Taper hole forms the tapered annular gas passage of Varied section product with the gabarit of shower nozzle core pipe 1.Shower nozzle core pipe 1 and shower nozzle outer tube 2 it
Between passage be formed continuously contractile ring cone section, multigap annular groove section, expanded ring cone section.
The external profile surface corresponding with the reducing circular cone hole section that the centre bore 2a of shower nozzle outer tube 2 expands of shower nozzle core pipe 1 be circular conical surface or
The face of cylinder, the polygon circumscribed circle diameter of shower nozzle core pipe 1 are equal to the cylinder bore diameter of shower nozzle outer tube 2, and shower nozzle core pipe 1 inserts shower nozzle
The annular groove space formed after the centre bore 2a of outer tube 2, it is equal to velocity of sound air-flow aditus laryngis in the total void area of the section part of cylinder hole section
Area, it is equal to area corresponding to supersonic airstream design Mach number in the total void area of conical bore exit section.
Embodiment 2
As shown in Figures 5 to 7, the difference of this example and embodiment 1 is, the positioning rib ridge 9 as location structure is
Be arranged in the interior profile surface of shower nozzle outer tube 2, as shown in Figure 6 and Figure 7, be evenly distributed on the inwall of isometrical circular hole portion at 3 or
Groove above；The groove of shower nozzle outer tube 2 forms concrete dynamic modulus annular groove shape gas passage 8, institute with the cylinder gabarit of shower nozzle core pipe 1
It is the face of cylinder to state the external profile surface corresponding with the isometrical cylindrical sections of centre bore 2a of shower nozzle outer tube 2 of shower nozzle core pipe 1, the cylinder of shower nozzle core pipe 1
Diameter is equal to the cylinder bore diameter of shower nozzle outer tube 2, and shower nozzle core pipe 1 inserts after the centre bore 2a of shower nozzle outer tube 2 the annular groove space formed,
It is equal to velocity of sound air-flow throat area, the total space of section in conical bore exit in the total void area of the section part of cylinder hole section
Area is equal to area corresponding to supersonic airstream design Mach number.
Other structures are same as Example 1.
Open up cancave cambered surface on shower nozzle outer tube 2 in above-described embodiment or groove is opened up in shower nozzle core pipe 1 and form positioning edge
The structure of ridge 9 is easy to fabricate, and throttle orifice 2b and stepped hole 2c arrangement form and quantity can be set according to the actual requirements
Put.
To sum up, the present invention makes central supersonic jet extend and decline in the outer layer increase of supersonic jet around with stream
Subtract smaller, supersonic jet is longer.Apply in RH vacuum refining furnace top guns, oxygen jet can be improved depth is penetrated to molten bath
Degree and stirring intensity, simultaneously because effluxvelocity decay delays, the blowing rifle position of oxygen rifle can be improved, without influenceing jet to molten steel
Impact depth, extend the service life of oxygen gun sprayer.
The embodiment of the RH vacuum refining top guns using the present embodiment shower nozzle is elaborated below.
1) RH vacuum refining top guns enter vacuum chamber by the top gun sealing passage at the top of vacuum chamber, lead in top gun cooling water
Road is continually fed into cooling water.Molten steel passes in and out vacuum chamber by the dip pipe of vacuum chamber bottom.
2) oxygen decarburization smelts the phase and blows oxygen by adding aluminum temperature raising period, and the oxygen that pressure is 0.9MPa is passed through in top gun oxygen channel
Gas, central tube are passed through inert protective gas.After finishing blowing, oxygen channel inert gas purge, and continue to be blown into protectiveness
Inert gas.
3) the powder injection desulphurization phase, the desulfurization powder conveyed by inert gas is passed through in duff pipe, oxygen channel is passed through inertia guarantor
Protect gas.Dust after end, duff pipe inert gas purge, oxygen channel, central tube continue to be blown into protectiveness inert gas.
4) heat temperature raising or except the cold steel phase, vacuum room temperature is first opened gas for ignition and lighted a fire when being less than 800 DEG C, is then turned on
Oxygen and main combustion gas, combustion gas is passed through in central tube, and oxygen channel is passed through oxygen-enriched air or pure oxygen combustion-supporting, flame monitoring sensor prison
Whether normal survey burning, finding to stop working immediately turns off combustion gas and oxygen, is passed through after inertia protection air-blowing is swept and lights a fire again again.Processing
After end, it is both needed to purge and is passed through inertia protection gas.
The present invention achieves following effect applied to RH vacuum refinings with top gun embodiment：
1) nozzle structure of the present embodiment is compared with existing nozzle structure, without being obtained using hot investment casting, manufacture difficulty
Reduced to obvious；
2) due to accelerating air-flow using annular groove slit aditus laryngis section, it is allowed to which oxygen flow can be effectively increased, and further be carried
High oxygen decarburization and the efficiency for blowing oxygen by adding aluminum heating；
3) due to using annular inert gas shielding desulfurization powder, pulvis consumption is reduced, improves recovery rate；
4) due to using pure oxygen or oxygen-enriched combustion-supporting coal gas or natural gas, hence it is evident that improve the efficiency of heating surface；
5) supersonic jet improves work rifle position, reduces consumption of cooling-water, extends the top lance spray nozzle life-span；
6) annular groove slit aditus laryngis section can substantially reduce stifled rifle probability；
7) annular groove slit aditus laryngis section can substantially reduce the influence expanded with heat and contract with cold to throat area.
8) nozzle structure of the present invention can install video frequency pick-up head, directly observe space situation below shower nozzle.
9) nozzle structure of the present invention can install gas ignition device and flame monitoring instrument, realize automatic ignition and safety
Defencive function.
10) nozzle structure of the present invention can make supersonic jet keep boundling state, main oxygen stream over a longer distance
Diameter and speed when can just keep exporting in longer distance.
Any person skilled in the art can all be carried out under the spirit and scope without prejudice to the present invention to above-described embodiment
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from disclosed spirit with
All equivalent modifications completed under technological thought or change, it should be covered by the claim of the present invention.
Claims (9)
1. a kind of annular groove cluster fluidic nozzle structure, including shower nozzle core pipe and shower nozzle outer tube, it is characterised in that：The shower nozzle outer tube
Centre bore and the throttle orifice around center pore size distribution are offered, the air inlet of the throttle orifice and gas outlet are respectively positioned on convergent-divergent channel
On body, throttle orifice penetrates convergent-divergent channel body along convergent-divergent channel jet direction；In the shower nozzle core pipe insertion centre bore, and with
Positioned between shower nozzle outer tube by location structure, concrete dynamic modulus is formed between profile surface in the shower nozzle core pipe external profile surface and shower nozzle outer tube
Annular groove shape gas passage and tapered annular gas passage；In the shower nozzle outer tube centre bore profile surface by three sections of continuous buses around center
Axis rotation forms, and first paragraph bus forms the reducing conical bore shunk in cross section with central axis into positive angle, and second segment is female
Line forms isometrical cylindrical hole with centerline axis parallel, and the 3rd section of bus forms the change of cross section expansion with central axis into negative angle
Footpath conical bore, location structure are located between cylindrical hole and the shower nozzle core pipe of shower nozzle outer tube centre bore so that shower nozzle outer tube centre bore
Second segment and shower nozzle core pipe external profile surface between form concrete dynamic modulus annular groove shape gas passage, the reducing conical bore of shower nozzle outer tube and institute
The tapered annular gas passage that shower nozzle core pipe gabarit forms Varied section product is stated, contraction is formed continuously respectively from oxygen inlet to outlet
Ring cone section, multigap annular groove section, expanded ring cone section.
A kind of 2. annular groove cluster fluidic nozzle structure according to claim 1, it is characterised in that：The location structure is fixed
Position rib ridge, the positioning rib ridge are arranged on shower nozzle outer tube or in shower nozzle core pipe.
A kind of 3. annular groove cluster fluidic nozzle structure according to claim 2, it is characterised in that：The outer tube hub of the shower nozzle
The cylindrical hole inner wall even distribution in hole has the groove of 3 and the above, and the positioning rib ridge is formed between adjacent two groove.
A kind of 4. annular groove cluster fluidic nozzle structure according to claim 2, it is characterised in that：With shower nozzle outer tube centre bore
Cylindrical hole corresponding to it is circumferentially distributed on shower nozzle core pipe external profile surface have multiple cancave cambered surfaces, formed between adjacent two cancave cambered surface described in
Position rib ridge.
A kind of 5. annular groove cluster fluidic nozzle structure according to claim 1, it is characterised in that：On the shower nozzle outer tube also
Mounting hole is offered, the mounting hole is sealedly provided with intermediate casing.
A kind of 6. annular groove cluster fluidic nozzle structure according to claim 5, it is characterised in that：The mounting hole is step
Hole, camera, igniter and flame monitoring sensor are separately installed with the intermediate casing.
A kind of 7. annular groove cluster fluidic nozzle structure according to claim 1, it is characterised in that：Also include and shower nozzle outer tube
Water cooling outer tube, marine riser, water-cooled inner tube, gas inner tube, the water cooling outer tube and water-cooled inner tube and the shower nozzle outer tube being coaxially disposed
Welded seal；The gas inner tube is with the grafting of shower nozzle core pipe and by resilient sealing ring sealing.
A kind of 8. annular groove cluster fluidic nozzle structure according to claim 1, it is characterised in that：The concrete dynamic modulus annular groove shape
The gross area at gas passage section minimum aperture is equal to velocity of sound air-flow throat area under design gas flow, tapered annular gas
Passage is designed corresponding to Mach number in the case where section total circular space gross area in conical bore exit is equal to design gas flow
Supersonic airstream discharge area.
A kind of 9. annular groove cluster fluidic nozzle structure according to claim 1, it is characterised in that：The shower nozzle core pipe and spray
External profile surface corresponding to the reducing circular cone hole section that head outer tube centre bore shrinks is the face of cylinder or circular conical surface；Shower nozzle core pipe and shower nozzle outer tube
External profile surface corresponding to the reducing circular cone hole section that centre bore expands is circular conical surface or the face of cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510833331.8A CN105256107B (en) | 2015-11-26 | 2015-11-26 | A kind of annular groove cluster fluidic nozzle structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510833331.8A CN105256107B (en) | 2015-11-26 | 2015-11-26 | A kind of annular groove cluster fluidic nozzle structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105256107A CN105256107A (en) | 2016-01-20 |
| CN105256107B true CN105256107B (en) | 2017-12-29 |
Family
ID=55096032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510833331.8A Active CN105256107B (en) | 2015-11-26 | 2015-11-26 | A kind of annular groove cluster fluidic nozzle structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105256107B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105567909B (en) * | 2016-03-08 | 2018-04-03 | 中冶赛迪工程技术股份有限公司 | A kind of connection sealing structure of RH annular distances supersonic speed top gun |
| CN105950824B (en) * | 2016-06-06 | 2018-03-16 | 中冶赛迪工程技术股份有限公司 | A kind of oxygen, combustion, the arc furnace steeling process of pulvis coenosarc injection |
| CN105910716A (en) * | 2016-06-06 | 2016-08-31 | 中冶赛迪工程技术股份有限公司 | Non-contact electric-arc-furnace continuous temperature measuring gun structure |
| CN105838845B (en) * | 2016-06-06 | 2018-04-03 | 中冶赛迪工程技术股份有限公司 | A kind of electric arc furnaces supersonic speed ring combustion boundling carbon oxygen lance and nozzle structure |
| CN108660275B (en) * | 2018-05-30 | 2019-09-24 | 北京科技大学 | A method of steel-making supersonic jet oxygen rifle and its reduction blowing jet noise |
| CN109628754A (en) * | 2019-02-03 | 2019-04-16 | 包头华鼎铜业发展有限公司 | Copper making continuous-blowing furnace oxygen lance nozzle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001181726A (en) * | 1999-11-16 | 2001-07-03 | Praxair Technol Inc | System for generating single coherent jet |
| CN1517588A (en) * | 2003-01-15 | 2004-08-04 | Coherent Jet flow device with nozzle having outer angle with axis of spray gun | |
| CN101684512A (en) * | 2008-09-26 | 2010-03-31 | 辽宁科技大学 | Coherent jet oxygen blowing method for electric furnace steel making |
| CN104775008A (en) * | 2015-05-08 | 2015-07-15 | 中冶赛迪工程技术股份有限公司 | Annular tooth seam supersonic jetting nozzle |
| CN205170911U (en) * | 2015-11-26 | 2016-04-20 | 中冶赛迪工程技术股份有限公司 | Annular efflux nozzle structure tied in a bundle |
-
2015
- 2015-11-26 CN CN201510833331.8A patent/CN105256107B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001181726A (en) * | 1999-11-16 | 2001-07-03 | Praxair Technol Inc | System for generating single coherent jet |
| CN1517588A (en) * | 2003-01-15 | 2004-08-04 | Coherent Jet flow device with nozzle having outer angle with axis of spray gun | |
| CN101684512A (en) * | 2008-09-26 | 2010-03-31 | 辽宁科技大学 | Coherent jet oxygen blowing method for electric furnace steel making |
| CN104775008A (en) * | 2015-05-08 | 2015-07-15 | 中冶赛迪工程技术股份有限公司 | Annular tooth seam supersonic jetting nozzle |
| CN205170911U (en) * | 2015-11-26 | 2016-04-20 | 中冶赛迪工程技术股份有限公司 | Annular efflux nozzle structure tied in a bundle |
Non-Patent Citations (1)
| Title |
|---|
| 集束射流技术在炼钢生产中的应用;连文敬 等;《工业加热》;20061231;第35卷(第6期);第29-31页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105256107A (en) | 2016-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105256107B (en) | A kind of annular groove cluster fluidic nozzle structure | |
| CN105316452B (en) | A kind of high rifle position process for vacuum refining based on boundling top gun | |
| CN1873287B (en) | Arousing vortex in airflow | |
| CN105838845B (en) | A kind of electric arc furnaces supersonic speed ring combustion boundling carbon oxygen lance and nozzle structure | |
| CN104775008A (en) | Annular tooth seam supersonic jetting nozzle | |
| US3175817A (en) | Burner apparatus for refining metals | |
| US3347660A (en) | Method for refining metals | |
| CN109628689A (en) | High hot metal ratio electric furnace method for supplying oxygen | |
| KR102089011B1 (en) | A top-burning hot blast furnace burner | |
| CN105420452B (en) | A kind of supersonic speed shower nozzle of anti-slag | |
| CN105910716A (en) | Non-contact electric-arc-furnace continuous temperature measuring gun structure | |
| CN109175339B (en) | Double-combustion-supporting channel smoke internal circulation type ladle roaster | |
| CN107034336A (en) | It is a kind of to improve the device and method that slag effect is splashed in converter | |
| CN206337288U (en) | The three layers of polymer fluidic oxygen guns for converter high effective oxygen blowing | |
| CN105441624B (en) | Gun head structure and method for regulating converter top blown oxygen flow by double-path oxygen flow | |
| CN205170911U (en) | Annular efflux nozzle structure tied in a bundle | |
| CN204608072U (en) | A kind of ring slot supersonic jet shower nozzle | |
| CN104152635A (en) | Top lance for RH vacuum refining | |
| CN109680118A (en) | Coaxial double supersonic flows of oxygen coherent oxygen lances | |
| CN213599834U (en) | Lower-layer tuyere copper water jacket for side-blown converter and side-blown converter | |
| CN201413042Y (en) | Nonimmersed top-blown lance | |
| CN205662532U (en) | Electric arc furnace supersonic speed ring fires carbon oxygen rifle tied in a bundle and sprinkler structure | |
| CA1051659A (en) | Liquid-fuel atomization and injection device | |
| CN201873701U (en) | Belly pipe with coal powder pre-burning function | |
| CN204162740U (en) | A kind of RH vacuum refinement top rifle that dusts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |