CN201296765Y - Multifunctional top lance head for vacuum refining of liquid steel - Google Patents
Multifunctional top lance head for vacuum refining of liquid steel Download PDFInfo
- Publication number
- CN201296765Y CN201296765Y CNU2008201749737U CN200820174973U CN201296765Y CN 201296765 Y CN201296765 Y CN 201296765Y CN U2008201749737 U CNU2008201749737 U CN U2008201749737U CN 200820174973 U CN200820174973 U CN 200820174973U CN 201296765 Y CN201296765 Y CN 201296765Y
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- Prior art keywords
- copperhead
- gas
- rifle
- molten steel
- multifunctional top
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Abstract
The utility model discloses a multifunctional top lance head for vacuum refining of liquid steel, which comprises a copper head and a top lance external pipe connected with the exterior of the copper head in a sealing way, wherein the copper head is internally provided with a laval hole, a plurality of gas pipes are arrayed in an annular shape around the copper head, gas channels are arranged in the gas pipes, the front ends of the gas channels are provided with gas jet holes, and outlets of the gas jet holes are arranged on external end face of the end part of the copper end, thereby oxygen blowing and decarburizing intensity can be increased, the firing area is enlarged, the liquid steel is decarburized more completely, the heating firing efficiency is higher and the temperature rise is even.
Description
Technical field
The utility model relates to the top rifle parts that use in the outer vacuum refinement (RH) of a kind of molten steel stove, relates to a kind of molten steel vacuum refinement multifunctional top-gun rifle head specifically.
Background technology
The RH multifunctional top-gun generally is arranged in the vacuum tank top, enters vacuum tank by the rifle hole, top on the hot bending pipe.Media such as the required oxygen of multifunctional top-gun work, argon gas, coal gas, desulfurization powder can enter vacuum tank by each layer dielectric-sleeve in the multifunctional top-gun, with realize in the RH molten steel vacuum refinement treating processes to molten steel carry out oxygen decarburization, add the aluminium heating by O2 blowing, powder injection desulphurization and RH handle multiple functions such as gap winding-up combustion gas intensification smelting cold steel.
Mainly there is following problem in existing multifunctional top-gun: 1) the rifle head is connected for the multiple tracks welded type with the rifle body, and water eliminator is set, and changing the rifle head as need then needs the per pass weld seam is severed, and needs the water pipe close fit with water eliminator and rifle body, it is big to change the rifle difficulty, has reduced working efficiency; 2) copperhead adopts the electrolytic copper casting to form, and is easy to generate defectives such as pore, shrinkage cavity, influences the rifle head life-span; 3) numerous RH top rifle gas injection hole is located at bore expansion section place, Lavalle; Influence the main oxygen hole jet stability, make that its oxygen decarburization and baking intensification net effect are not satisfactory; 4) it is too little that multifunctional top-gun flame is observed passage water coolant space, and cooling performance is undesirable, causes the rifle head life-span very low.
The utility model content
Problem to be solved in the utility model is the problem that exists at existing RH multifunctional top-gun rifle head, a kind of molten steel vacuum refinement multifunctional top-gun rifle head is provided, it is convenient to make the rifle head install and change, stablize main oxygen hole jet state, improve oxygen decarburization and baking intensification effect and cooling performance, improve the detection sensitivity of rifle head work-ing life and combustion flame.
For addressing the above problem, the technical solution adopted in the utility model is:
A kind of molten steel vacuum refinement multifunctional top-gun rifle head, comprise copperhead and the external pipe of rifle that is connected with the outside seal of copperhead, be provided with the hole, Lavalle in the copperhead, circular array has a plurality of gas pipes around copperhead, be provided with the gas flue that its front end has gas jet orifice in the gas pipe, the outlet of this gas jet orifice is arranged on the outer face of copperhead end.
Below be the utility model for further improvement of these options:
The outside of described gas flue is with combustion-supporting oxygen hose, forms combustion-supporting oxygen channel between this combustion-supporting oxygen hose and the gas flue, and the outlet of combustion-supporting oxygen channel is arranged on the outer face of copperhead end.
Be provided with in the cavity of the external pipe of described rifle and have the observation tube of observing passage, this observation tube front opening is positioned on the outer face of copperhead end.
Hole, Lavalle in the copperhead comprises contraction section, aditus laryngis and passage main oxygen hole expansion segment, and the front opening of described passage main oxygen hole expansion segment is positioned on the outer face of copperhead end.
The rear portion of described copperhead is provided with the sealing-ring with the central oxygen pipe coupling.
The utility model adopts technique scheme, has the following advantages:
1, the rifle head adopts to be sealed and matched to be connected with welded type with the rifle body and is connected, cancelled the water eliminator in the rifle head, change by on the rifle body, water eliminator being installed, wherein the rifle head has adopted to be sealed and matched with rifle body central oxygen pipe coupling place and has been connected, need when having avoided changing the rifle head in the multilayer outer tube, to extract pipe core out the disadvantage of welding again, need not water pipe close fit, reduced replacing rifle head difficulty, improved working efficiency water eliminator and rifle body; And behind the rifle head in-discard water eliminator, the current gap is bigger, has improved cooling performance, has prolonged the rifle head life-span.
2, adopt hole, Lavalle oxygen decarburization, a plurality of annular fuel gas spray orifices of its arranged around.This annular fuel gas spray orifice is formed by being distributed in hole, Lavalle a plurality of gas apertures on every side, each gas aperture both can increase oxygen decarburization intensity around combustion-supporting oxygen hose, had increased the baking area again, make that the molten steel decarburization is more thorough, heated baking efficient is higher and heat up even.
3, observe passage at hole, Lavalle side, and strengthened observation passage cooling-water flowing space, made it cooling water circulation fully, water coolant circulation area increases, and resistance is decreased and reduced, and helps the cooling of rifle head, improves the rifle head life-span.
The utility model is described in further detail below in conjunction with drawings and Examples:
Description of drawings
Accompanying drawing 1 is the section of structure of multifunctional top-gun rifle head among the utility model embodiment;
Accompanying drawing 2 is the right view of accompanying drawing 1.
Among the figure: 1-copperhead, 2-gas pipe, 3-gas pipe, the combustion-supporting oxygen hose of 4-, 5-observation tube, the external pipe of 6-rifle, 7-cools off cavity, 8-sealing-ring, 9-aditus laryngis, the combustion-supporting oxygen channel of 10-, 11-passage main oxygen hole expansion segment, 12-contraction section, 13-gas jet orifice, 14-gas flue, 15-central oxygen pipe.
Specific embodiment
Embodiment, as shown in Figure 1, a kind of molten steel vacuum refinement multifunctional top-gun rifle head, comprise the external pipe 6 of rifle that copperhead 1 is connected with outside seal with copperhead 1, be provided with the hole, Lavalle in the copperhead 1, copperhead adopts oxygen free copper to forge and forms, cast the rifle head that forms than former electrolytic copper, density brings up to 8.9 by 8.5, hardness is brought up to HL350～380 by hardness of cast form HL50, strengthened the capacity of heat transmission of rifle head greatly, make steel be difficult to stick to the rifle end surface and be easy to come off, slowed down the erosion of molten steel to the rifle end surface, improved the work-ing life of rifle head greatly, can reach more than 3 times of routine casting rifle head, circular array has a plurality of gas pipes 3 around copperhead 1, be provided with the gas flue 14 that its front end has gas jet orifice 13 in the gas pipe 3, the outlet of this gas jet orifice 13 is arranged on the outer face of copperhead end, be provided with in the cavity of the external pipe 6 of described rifle and have the observation tube 5 of observing passage, these observation tube 5 front openings are positioned on the outer face of copperhead end, the rear end flame detector external with being arranged on rifle is connected, when multifunctional top-gun burnt, flame detector can correctly detect the flame status of top rifle.
The rear portion of described copperhead 1 is provided with the sealing-ring 8 that is connected with central oxygen pipe 15, after copperhead 1 is tightly connected with central oxygen pipe 15, cavity between the external pipe 6 of copperhead 1 and central oxygen pipe 15 and rifle forms cooling cavity 7, hole, Lavalle in the copperhead 1 comprises contraction section 12, aditus laryngis 9 and passage main oxygen hole expansion segment 11, the front opening of described passage main oxygen hole expansion segment 11 is positioned on the outer face of copperhead end, and the rear portion of described copperhead 1 is provided with the sealing-ring 8 with the central oxygen pipe coupling.As shown in Figure 2, the outside of described gas pipe 3 is with combustion-supporting oxygen hose 4, form combustion-supporting oxygen channel 10 between this combustion-supporting oxygen hose 4 and the gas flue 14, the outlet of combustion-supporting oxygen channel 10 is arranged on the outer face of copperhead end, when the rifle head is installed, earlier gas pipe 3 is connected to separately on the rifle body gas pipe and welds, copperhead 1 being put sealing-ring 8 inserts in the rifle body central oxygen pipe again, subsequently combustion-supporting oxygen hose 4 and observation tube 5 are connected respectively on combustion-supporting oxygen hose of rifle body and the rifle body observation tube and weld, copperhead is pushed in the rifle body central oxygen pipe 15, at last with rifle head outer tube 6 and the external sealing of tube of rifle.
Claims (5)
1, a kind of molten steel vacuum refinement multifunctional top-gun rifle head, comprise the external pipe of rifle (6) that copperhead (1) is connected with outside seal with copperhead (1), copperhead is provided with the hole, Lavalle in (1), circular array has a plurality of gas pipes (3) around copperhead (1), be provided with the gas flue (14) that its front end has gas jet orifice (13) in the gas pipe (3), it is characterized in that: the outlet of this gas jet orifice (13) is arranged on the outer face of copperhead end.
2, a kind of molten steel vacuum refinement multifunctional top-gun rifle head according to claim 1, it is characterized in that: the outside of described gas pipe (3) is with combustion-supporting oxygen hose (4), form combustion-supporting oxygen channel (10) between this combustion-supporting oxygen hose (4) and the gas flue (14), the outlet of combustion-supporting oxygen channel (10) is arranged on the outer face of copperhead end.
3, a kind of molten steel vacuum refinement multifunctional top-gun rifle head according to claim 1 and 2, it is characterized in that: be provided with in the cavity of the external pipe of described rifle (6) and have the observation tube (5) of observing passage, this observation tube (5) front opening is positioned on the outer face of copperhead end.
4, a kind of molten steel vacuum refinement multifunctional top-gun rifle head according to claim 1, it is characterized in that: the hole, Lavalle in the copperhead (1) comprises contraction section (12), aditus laryngis (9) and passage main oxygen hole expansion segment (11), and the front opening of described passage main oxygen hole expansion segment (11) is positioned on the outer face of copperhead end.
5, according to claim 1 or 4 described a kind of molten steel vacuum refinement multifunctional top-gun rifle heads, it is characterized in that: the rear portion of described copperhead (1) is provided with the sealing-ring (8) that is connected with central oxygen pipe (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201749737U CN201296765Y (en) | 2008-11-10 | 2008-11-10 | Multifunctional top lance head for vacuum refining of liquid steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201749737U CN201296765Y (en) | 2008-11-10 | 2008-11-10 | Multifunctional top lance head for vacuum refining of liquid steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201296765Y true CN201296765Y (en) | 2009-08-26 |
Family
ID=41042739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201749737U Expired - Fee Related CN201296765Y (en) | 2008-11-10 | 2008-11-10 | Multifunctional top lance head for vacuum refining of liquid steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201296765Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022917A (en) * | 2011-01-04 | 2011-04-20 | 马鞍山钢铁股份有限公司 | Top gun applied to steel production |
| CN104120215A (en) * | 2014-08-07 | 2014-10-29 | 中冶赛迪上海工程技术有限公司 | Powder spraying top lance for RH vacuum refining |
| CN104152635A (en) * | 2014-08-07 | 2014-11-19 | 中冶赛迪上海工程技术有限公司 | Top lance for RH vacuum refining |
| CN105567909A (en) * | 2016-03-08 | 2016-05-11 | 中冶赛迪工程技术股份有限公司 | Connecting and sealing structure of annular hole supersonic RH top lance |
-
2008
- 2008-11-10 CN CNU2008201749737U patent/CN201296765Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022917A (en) * | 2011-01-04 | 2011-04-20 | 马鞍山钢铁股份有限公司 | Top gun applied to steel production |
| CN104120215A (en) * | 2014-08-07 | 2014-10-29 | 中冶赛迪上海工程技术有限公司 | Powder spraying top lance for RH vacuum refining |
| CN104152635A (en) * | 2014-08-07 | 2014-11-19 | 中冶赛迪上海工程技术有限公司 | Top lance for RH vacuum refining |
| CN104120215B (en) * | 2014-08-07 | 2015-11-18 | 中冶赛迪上海工程技术有限公司 | A kind of RH vacuum refinement top rifle that dusts |
| CN104152635B (en) * | 2014-08-07 | 2016-02-03 | 中冶赛迪上海工程技术有限公司 | A kind of RH vacuum refinement top rifle |
| CN105567909A (en) * | 2016-03-08 | 2016-05-11 | 中冶赛迪工程技术股份有限公司 | Connecting and sealing structure of annular hole supersonic RH top lance |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20131110 |