CN203474837U - Novel lance head structure of multi-function top lance - Google Patents
Novel lance head structure of multi-function top lance Download PDFInfo
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- CN203474837U CN203474837U CN201320582937.5U CN201320582937U CN203474837U CN 203474837 U CN203474837 U CN 203474837U CN 201320582937 U CN201320582937 U CN 201320582937U CN 203474837 U CN203474837 U CN 203474837U
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- oxygen
- pipe
- lance
- head body
- gas
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Abstract
The utility model discloses the field of metallurgy, and particularly relates to a novel lance head structure of a multi-function top lance in a vacuum furnace external refining system. The novel lance head structure of the multi-function top lance at least comprises a lance head body; the center of the lance head body is provided with a gas pipe; an oxygen pipe, a water intake pipe and a water exhaust pipe are respectively sheathed from inside to outside sequentially by taking the gas pipe as a center; the upper ends of the gas pipe, the oxygen pipe, the water intake pipe and the water exhaust pipe are respectively welded with each layer of casing pipes of the lance body of the top lance correspondingly. The novel lance head structure of the multi-function top lance is characterized in that the lower end of the gas pipe is communicated with a gas hole in the top of the lance head body; 3-6 through holes are uniformly distributed in the lower end of the oxygen pipe along the circumference centering on the gas pipe; each through hole is communicated with an oxygen hole in the top of the lance head body through an oxygen branch pipe; the water intake pipe is communicated with the water exhaust pipe through a water outlet in a seal surface at the lower end of the water intake pipe. According to the utility model, because 3-6 oxygen blow holes are adopted, the oxygen blow and decarbonization efficiency can be improved; the center of the top lance is provided with the gas hole, and meanwhile oxygen and gas are blown in, so that a vacuum groove can be heated up.
Description
Technical field
The utility model relates to field of metallurgy, particularly a kind of outside vacuum oven the novel Multifunctional top lance head structure in a refining unit.
Background technology
The function of the outer a refining unit of vacuum oven be in the vacuum environment of the about 67Pa of absolute pressure, molten steel is carried out degassed, decarburization, composition adjustment.For faster decarburization, on molten steel face, multifunctional top-gun is set, carry out oxygen blast, oxygen carries out smelting chemical with C element in molten steel and reacts, and generates CO, from molten steel, overflows, thereby the carbon in removal molten steel, produces the ultra low-carbon steel of high quality, high added value.In RH external refining device, also can be blown into combustion gas simultaneously, in processing gap, vacuum tank is heated.
At present, in known external refining system, adopt the top blow oxygen lance of single hole, the carbon in molten steel is removed.The effective contact area of blowing oxygen on molten steel face is less, and insufficient with the C metallurgical reaction in molten steel, utilization ratio is lower.Fuel gas hole, on the circumference of the expansion segment of oxygen outlet laval nozzle, easily produces larger noise in addition.
Summary of the invention
The purpose of this utility model is to provide a kind of novel Multifunctional top lance head structure, and in the time of can increasing blowing oxygen and effective contact area molten steel make oxygen fully contact with molten steel, makes metallurgical chemistry reaction more abundant, improves the utilization ratio of oxygen.Fuel gas hole and oxygen outlet are adopted mutually to completely independently passage, the two is at the burning of top external mix, the noise in the time of can reducing as far as possible top rifle oxygen blast so simultaneously.
The utility model solves the technical scheme that its technical problem adopts: design a kind of novel Multifunctional top lance head structure, which comprises at least rifle head body, center at rifle head body is provided with gas line, centered by gas line, overlaps and has oxygen hose, water inlet pipe and rising pipe respectively from inside to outside successively; The upper end of gas line, oxygen hose, water inlet pipe and rising pipe respectively with the corresponding welding of each layer of sleeve pipe of top rifle rifle body; It is characterized in that: described gas line lower end communicates with the fuel gas hole at rifle head body top; Oxygen hose lower end is centered by gas line, be furnished with 3-6 through hole along circumference is even, and each through hole communicates with the oxygen outlet at rifle head body top by an oxygen manifold respectively; Water inlet pipe is communicated with rising pipe by the water outlet on the trim of water inlet pipe lower end.
The center angle of described oxygen manifold and gas line is 7 ~ 14 °.
Described rifle head body adopts the red copper precision casting that thermal conductivity is good to be shaped.
The beneficial effects of the utility model are, a kind of novel Multifunctional top lance head architecture, adopt 3 ~ 6 oxygen blast holes, make effective contact area of oxygen jet and molten steel larger, react more abundant with the smelting chemical of C element in molten steel, improve the efficiency of vacuum decarburization, shortened the time of oxygen decarburization.Fuel gas hole and oxygen outlet are two autonomous channels simultaneously, can reduce the noise of high speed oxygen jet.Be blown in addition combustion gas and oxygen simultaneously, vacuum tank is heated and is incubated.
Above-mentioned said vacuum tank, the structure of oxygen gun body is the known technology in the outer a refining unit of vacuum oven.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, invention is further illustrated.
Fig. 1 is novel Multifunctional top lance head structural representation;
Fig. 2 is that novel Multifunctional top lance head structure is shown upward view.
In figure: 1, rifle head body; 2, rising pipe; 3, water inlet pipe; 4, oxygen hose; 5, gas line; 6, oxygen outlet; 7, rifle body; 8, fuel gas hole; 9, oxygen manifold; 10, through hole.
Embodiment
Embodiment
As Figure 1-Figure 2, provide the structural representation of the utility model embodiment, which comprises at least rifle head body 1, in the center of rifle head body 1, be provided with gas line 5, centered by gas line 5, overlap and have oxygen hose 4, water inlet pipe 3 and rising pipe 2 respectively from inside to outside successively; The upper end of gas line 5, oxygen hose 4, water inlet pipe 3 and rising pipe 2 respectively with the corresponding welding of each layer of sleeve pipe of top rifle rifle body 7; Described gas line 5 lower ends communicate with the fuel gas hole 8 at rifle head body 1 top; Take centered by gas line 5, along the even 3-6 of being furnished with of circumference through hole 10(the present embodiment, be 3 through holes in oxygen hose 4 lower ends), each through hole communicates with the oxygen outlet 6 at rifle head body 1 top by an oxygen manifold 9 respectively; Water inlet pipe 3 is communicated with rising pipe 2 by the water outlet on the trim of water inlet pipe lower end.
Described oxygen manifold 9 is 7 ~ 14 ° with the center angle of gas line 5.
The most basic feature of the utility model is that oxygen outlet and fuel gas hole are separate passage, adopts 3 ~ 6 oxygen outlets 6, makes blowing oxygen larger in effective contact area on molten steel surface, reacts more abundant with the metallurgical chemistry of C element in molten steel.Simultaneously in the center of rifle head, fuel gas hole is set, can noise decrease when high speed oxygen jet, be blown into oxygen and combustion gas simultaneously and vacuum tank heated and be incubated.Water coolant in water inlet pipe 3 flows out from rising pipe 2 through the oxygen hose 4 of rifle head body 1 and the outer wall of gas line 5, fully cooling gun head body 1.
The principle of work of the utility model multifunctional top-gun: can carry out oxygen decarburization to molten steel, oxygen sprays by three oxygen outlets, fully contacts in vacuum tank with molten steel, makes C element and O element reaction in molten steel generate CO, in many molten steel, discharges.After vacuum-treat finishes, in order to keep the temperature of vacuum tank, can add oxygen and combustion gas simultaneously, the two mixes afterfire, and vacuum tank and hot-bending pipe are heated or keep temperature.
The parts that the present embodiment does not describe in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not narration one by one.
Claims (3)
1. novel Multifunctional top lance head structure, which comprises at least rifle head body (1), in the center of rifle head body (1), be provided with gas line (5), centered by gas line (5), overlap and have oxygen hose (4), water inlet pipe (3) and rising pipe (2) respectively from inside to outside successively; The upper end of gas line (5), oxygen hose (4), water inlet pipe (3) and rising pipe (2) respectively with the corresponding welding of each layer of sleeve pipe of top rifle rifle body (7); It is characterized in that: described gas line (5) lower end communicates with the fuel gas hole (8) at rifle head body (1) top; Oxygen hose (4) lower end is centered by gas line (5), along even 3-6 the through hole (10) that be furnished with of circumference, and each through hole communicates with the oxygen outlet (6) at rifle head body (1) top by an oxygen manifold (9) respectively; Water inlet pipe (3) is communicated with rising pipe (2) by the water outlet on the trim of water inlet pipe lower end.
2. novel Multifunctional top lance head structure according to claim 1, is characterized in that: described oxygen manifold (9) is 7 ~ 14 ° with the center angle of gas line (5).
3. novel Multifunctional top lance head structure according to claim 1, is characterized in that: described rifle head body (1) adopts the red copper precision casting that thermal conductivity is good to be shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582937.5U CN203474837U (en) | 2013-09-22 | 2013-09-22 | Novel lance head structure of multi-function top lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582937.5U CN203474837U (en) | 2013-09-22 | 2013-09-22 | Novel lance head structure of multi-function top lance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203474837U true CN203474837U (en) | 2014-03-12 |
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ID=50223199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320582937.5U Withdrawn - After Issue CN203474837U (en) | 2013-09-22 | 2013-09-22 | Novel lance head structure of multi-function top lance |
Country Status (1)
| Country | Link |
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| CN (1) | CN203474837U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614518A (en) * | 2013-09-22 | 2014-03-05 | 中国重型机械研究院股份公司 | Novel multifunction top lance head |
| CN109295276A (en) * | 2018-10-24 | 2019-02-01 | 周贵英 | Efficient combined-type forges and presses oxygen lance nozzle |
-
2013
- 2013-09-22 CN CN201320582937.5U patent/CN203474837U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103614518A (en) * | 2013-09-22 | 2014-03-05 | 中国重型机械研究院股份公司 | Novel multifunction top lance head |
| CN103614518B (en) * | 2013-09-22 | 2015-12-16 | 中国重型机械研究院股份公司 | multifunctional top lance head |
| CN109295276A (en) * | 2018-10-24 | 2019-02-01 | 周贵英 | Efficient combined-type forges and presses oxygen lance nozzle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20151216 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140312 Effective date of abandoning: 20151216 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |