CN104513881A - Rising pipe arranged between steel ladle and vacuum chamber - Google Patents
Rising pipe arranged between steel ladle and vacuum chamber Download PDFInfo
- Publication number
- CN104513881A CN104513881A CN201410785914.3A CN201410785914A CN104513881A CN 104513881 A CN104513881 A CN 104513881A CN 201410785914 A CN201410785914 A CN 201410785914A CN 104513881 A CN104513881 A CN 104513881A
- Authority
- CN
- China
- Prior art keywords
- hole
- row
- upcast
- vacuum chamber
- gas
- 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.)
- Pending
Links
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention relates to a rising pipe arranged between a steel ladle and a vacuum chamber. A first row of through holes and a second row of through holes which are axially staggered from the first row of through holes are radially formed in the rising pipe; threaded slots are formed in the inner surface of each through hole of the first row of through holes and the second row of through holes. In the arrangement way of the through holes of the rising pipe, energy loss caused by a gas jet into a central area of the rising pipe can be avoided, the utilization ratio of gas can be improved, and the circulating condition of molten steel is improved.
Description
Technical field
The present invention relates to a kind of upcast be arranged between ladle and vacuum chamber.
Background technology
RH refining furnace is a kind of equipment of vacuum circulation degassing process molten steel, and this RH refining furnace comprises ladle and is arranged on the vacuum chamber above ladle, and between ladle and vacuum chamber, be provided with upcast and downtake.RH refining furnace is in the process of process molten steel, because upcast is provided with the parts being blown into rare gas element in it, the molten steel in ladle is caused constantly to be input in vacuum chamber through upcast, and downtake does not arrange the parts for blown inert gas, the molten steel entered in ladle is caused to return in ladle from downtake, so molten steel circulating between ladle and vacuum chamber carries out refining treatment or Alloying Treatment.
In the prior art, RH refining furnace upcast is provided with the gas orifice of upper and lower two ring symmetric offset spread usually, and each gas orifice in two ring gas orifices is smooth cylinder, although pneumatic tube inserts the central zone that gas directly can be blowed to RH refining furnace upcast in gas orifice, but utilize this kind of gas orifice to delivering gas in upcast can make gas upcast center assemble institute formed " whirlpool post " probability increase, thus cause splash in RH vacuum chamber to increase, the cold steel be input in vacuum chamber is caused to increase, so, this kind of plenum system makes molten steel perpendicular directional line velocity distribution in RH refining furnace upcast uneven, the decay of energy can be caused, not only waste the gas flow of lifting, also add tap to tap time simultaneously, another problem is, circulation flow of hot metal has one " saturation value ", after reaching " saturation value ", can continue to increase the flow being blown into air-flow, bubbler tube runner can be produced in upcast, circulation flow of hot metal is declined, causes gas effective stroke to shorten and reduce the specific surface area of gas, reducing gas reaction speed.
Name disclosed in No. 201793627U, Chinese patent is called that " a kind of air feeder for RH refining furnace upcast " proposes a kind of scheme.This air feeder is mainly by upcast epimere, and upcast hypomere, air-supply duct, gas manifold, the flame retardant coating in upcast and air supply chamber are formed.This device is sprayed via upper gas manifold and lower gas manifold nozzle separately by pressurized gas by air supply chamber, thus external force is applied to the molten steel in upcast, make molten steel produce velocity component in the horizontal direction again while rising flowing, in upcast, produce vortex flow to make molten steel.Although this device can improve circulation flow of hot metal, its pipeline is various, and cause its complex structure, use cost is higher; Topmost problem is, the nozzle that this device is arranged also is the cylindrical structural adopting smooth formula, and splash in vacuum chamber also can be caused to increase.
Summary of the invention
Task of the present invention is to provide a kind of upcast be arranged between ladle and vacuum chamber utilizing dislocation and rotate that the mode of delivering gas solves rotating jet energy decrement in molten steel and extend the problems such as tap to tap time.
The radial direction of the proposed by the invention upcast be arranged between ladle and vacuum chamber is provided with first row through hole and the second row through hole with first row through hole axile displacement, and in first row through hole and second row through hole, the internal surface of each through hole is provided with screw-type conduit.
Described first row through hole and second row through hole are provided with to interval equidistance 8-13 through hole respectively, and the diameter of each through hole is 2.8-4.7 centimetre.
First row through hole in the proposed by the invention upcast be arranged between ladle and vacuum chamber and second row through hole be not on the axial straight line of same, and the internal surface of each through hole is provided with screw-type conduit, the mode that this kind arranges through hole can avoid gas-jet to lose in upcast central zone generate energy, the utilization ratio of gas can be improved, improve the circulatory condition of molten steel; In addition, the 2.8-4.7cm that through-hole diameter is arranged, the rotating jet expanded-angle that aperture can be made to penetrate is large, entrainments with mixing capacity strong, decreases the splash of molten steel in vacuum chamber.
Accompanying drawing illustrates:
Accompanying drawing 1 is the proposed by the invention plan structure schematic diagram being arranged on the upcast embodiment between ladle and vacuum chamber;
Accompanying drawing 2 is vertical front views in Fig. 1;
Accompanying drawing 3 is diagrammatic cross-sections of through hole in Fig. 1.
Embodiment:
As Fig. 1 to Fig. 3, these three accompanying drawings provide the proposed by the invention upcast surface structure schematic diagram be arranged between ladle and vacuum chamber.This upcast is made up of cylinder shape hollow member 1, and the radial direction of this cylinder shape hollow member 1 is provided with first row through hole 2 and second row through hole 3, and the first row through hole 2 proposed in the present embodiment and second row through hole 3 are respectively arranged with 10 through holes at equidistant intervals,
And through hole neighbouring in first row through hole 2 and second row through hole 3 misplaces, and namely not on the same straight line of axis, because the quantity of through hole can be determined according to the size of cylinder shape hollow member 1 diameter, can arrange 8-13 through hole under normal circumstances; In addition, the internal surface of each through hole in first row through hole 2 and second row through hole 3 is provided with screw-type conduit 4, and the diameter of each through hole can be set to 2.8-4.7 centimetre.
The outside surface of the hollow member 1 of above-mentioned cylinder shape is provided with refractory materials, and internal surface is provided with spraying material, makes it high temperature resistant, high pressure resistant, and erosion resistibility strengthens, and reduces the impact to upcast; The openings of first row through hole 2 and second row through hole 3 Heterogeneous Permutation can reduce the power loss of gas-jet in upcast central zone, to improve the utilization ratio of gas, shortens treatment cycle; Gas toward input in upcast can be argon gas or nitrogen or carbon monoxide or argon gas, nitrogen, the mixed gas of carbon monoxide three, and the gas of input according to different smelting demands, can select the gaseous species that it passes through; In addition, according to injecting the mode of rotating jet expanded-angle of gas to upcast to select number and the diameter of through hole, to improve the ability of entrainmenting with blending, the splash of molten steel in vacuum chamber can be decreased, improving the circulation of molten steel.
Claims (2)
1. be arranged on the upcast between ladle and vacuum chamber, it is characterized in that: the radial direction of this upcast is provided with first row through hole and the second row through hole with first row through hole axile displacement, and in first row through hole and second row through hole, the internal surface of each through hole is provided with screw-type conduit.
2. upcast according to claim 1, is characterized in that: described first row through hole and second row through hole are provided with to interval equidistance 8-13 through hole respectively, and the diameter of each through hole is 2.8-4.7 centimetre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785914.3A CN104513881A (en) | 2014-12-18 | 2014-12-18 | Rising pipe arranged between steel ladle and vacuum chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785914.3A CN104513881A (en) | 2014-12-18 | 2014-12-18 | Rising pipe arranged between steel ladle and vacuum chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104513881A true CN104513881A (en) | 2015-04-15 |
Family
ID=52789753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410785914.3A Pending CN104513881A (en) | 2014-12-18 | 2014-12-18 | Rising pipe arranged between steel ladle and vacuum chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104513881A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05748U (en) * | 1991-06-27 | 1993-01-08 | 新日本製鐵株式会社 | Large amount of gas injection dip tube |
| CN101670530A (en) * | 2009-09-24 | 2010-03-17 | 玉环县坎门机床厂 | Adjustable dry cutting swirl pneumatic cooler |
| CN201793627U (en) * | 2010-08-06 | 2011-04-13 | 武汉钢铁(集团)公司 | Air feeding device used on ascending tube of RH refining furnace |
| CN102560002A (en) * | 2010-12-11 | 2012-07-11 | 鞍钢股份有限公司 | Method for removing fine impurities of molten steel and blowing device adopted by the method |
| CN204455194U (en) * | 2014-12-18 | 2015-07-08 | 本钢板材股份有限公司 | Be arranged on the upcast between ladle and vacuum chamber |
-
2014
- 2014-12-18 CN CN201410785914.3A patent/CN104513881A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05748U (en) * | 1991-06-27 | 1993-01-08 | 新日本製鐵株式会社 | Large amount of gas injection dip tube |
| CN101670530A (en) * | 2009-09-24 | 2010-03-17 | 玉环县坎门机床厂 | Adjustable dry cutting swirl pneumatic cooler |
| CN201793627U (en) * | 2010-08-06 | 2011-04-13 | 武汉钢铁(集团)公司 | Air feeding device used on ascending tube of RH refining furnace |
| CN102560002A (en) * | 2010-12-11 | 2012-07-11 | 鞍钢股份有限公司 | Method for removing fine impurities of molten steel and blowing device adopted by the method |
| CN204455194U (en) * | 2014-12-18 | 2015-07-08 | 本钢板材股份有限公司 | Be arranged on the upcast between ladle and vacuum chamber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204429125U (en) | One is applicable to gas-gas rapid-action mixing arrangement | |
| CN202951712U (en) | Rod and wire water-cooling system | |
| CN102560144A (en) | Double rotational flow premix type metallurgical nozzle | |
| CN201715513U (en) | Inferior high velocity burner | |
| CN105256107A (en) | Ring groove coherent jet nozzle structure | |
| CN110578032B (en) | Large converter blowing process method | |
| CN204455194U (en) | Be arranged on the upcast between ladle and vacuum chamber | |
| US7473297B2 (en) | Vertical shaft melting furnace | |
| CN105420452B (en) | A kind of supersonic speed shower nozzle of anti-slag | |
| CN206337288U (en) | The three layers of polymer fluidic oxygen guns for converter high effective oxygen blowing | |
| CN104513881A (en) | Rising pipe arranged between steel ladle and vacuum chamber | |
| CN205065716U (en) | Low nitrogen solid fuel oxygen boosting combustor of steady flame | |
| CN109680118B (en) | Coaxial double supersonic oxygen flow bundling oxygen gun | |
| CN201512542U (en) | Blast furnace roof water injection gun | |
| CN103255253A (en) | Side spraying type coal powder spraying gun | |
| CN101460781A (en) | Gas burner nozzle | |
| CN204080004U (en) | A kind of double-current field top burning type hot blast stove combustor | |
| CN114196798B (en) | Single-channel secondary combustion oxygen lance and use method thereof | |
| CN105441624A (en) | Lance head structure and method for double-oxygen-flow adjustment of top blowing oxygen flow rate of converter | |
| CN201292394Y (en) | Quenching apparatus with adjustable air sphere | |
| CN201539856U (en) | Central air supply device for boiler furnace of circulating fluidized bed | |
| CN209978038U (en) | Adjustable petroleum coke powder burner | |
| CN204509369U (en) | Copper steel is in conjunction with double-current method blast furnace tuyere small sleeve | |
| CN110885933B (en) | Method for strengthening smelting effect of bottom-blowing smelting furnace and improving melt splashing | |
| CN219083707U (en) | Gas protection device in mesh belt furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150415 |
|
| RJ01 | Rejection of invention patent application after publication |