CN209397236U - A kind of porous vortex type high-efficient oxygen lance nozzle - Google Patents
A kind of porous vortex type high-efficient oxygen lance nozzle Download PDFInfo
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- CN209397236U CN209397236U CN201822112404.6U CN201822112404U CN209397236U CN 209397236 U CN209397236 U CN 209397236U CN 201822112404 U CN201822112404 U CN 201822112404U CN 209397236 U CN209397236 U CN 209397236U
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- spray head
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Abstract
The utility model discloses a kind of porous vortex type high-efficient oxygen lance nozzles, welded tube in the outer welded tube being fixedly connected including spray head and with spray head, interior welded tube, channel is respectively formed between outer welded tube and middle welded tube, between middle welded tube and interior welded tube, spray head is equipped with the cavity for being connected to above-mentioned two channel, and the cooling cavity of spray head is collectively formed in channel and cavity；Spray head is equipped with perforative oxygen through-hole, and axis and the spray head center line of oxygen through-hole are not generally aligned in the same plane, and the upper port of oxygen through-hole is relative to lower port close to spray head center line；The warp of the axis of oxygen through-hole peroxide vent hole upper port on the projection line and spray head of spray head upper surface forms swirl angle；The quantity of oxygen through-hole be it is multiple, multiple oxygen through-holes are arranged at intervals on its side by the center of circle of the center of spray head.A kind of porous vortex type high-efficient oxygen lance nozzle of the utility model, it is big that when blowing, forges area, and oxygen contacts the utilization rate for sufficiently improving oxygen with molten iron, molten iron can more preferable scorification, effectively shorten duration of blast.
Description
Technical field
The utility model belongs to oxygen lance technical field more particularly to a kind of porous vortex type high-efficient oxygen lance nozzle.
Background technique
Oxygen rifle is to be blown into high pressure, high purity degree oxygen in converter above metal bath with hypersonic velocity, and have high pressure water
The tubular equipment of cooling protection system, is called spray gun.It is the important equipment of top-blown oxygen steelmaking.Oxygen rifle is oxygen converter steelmaking
In one of major process unit, performance characteristic directly influences metallurgical effect and duration of blast, to influence steel
Quality and yield.
The structure and performance of oxygen rifle largely decide the effect of oxygen steelmaking.Turn especially for top blast oxygen
Furnace steelmaking process, oxygen rifle play the effect for dominating the overall situation.Oxygen rifle is made of spray head, the body of a gun and gun breech three parts, and wherein spray head is
The most important part of oxygen rifle.Nozzle structure decide the contact area of oxygen jet and molten bath, the penetration depth of oxygen jet,
The stirring in molten bath, the degree of oxidation of element, the heating rate in molten bath, the important process factor such as iron oxide content in slag, because
And important work is all played to slugging, splash, the removal of impurity, BOF Steelmaking Endpoint Control and every steel-smelting technology economic indicator
With.
As Fig. 1 and Fig. 2 jointly shown in, in the prior art, the structure of the oxygen lance nozzle of steel mill's steel-making is mostly: spray head (1)
Multiple oxygen through-holes (8) are equipped with, the structure of oxygen through-hole (8) uses Lavalle jet orifice structure, the upper port of oxygen through-hole (8)
Opposing lower end mouth is close to the center of oxygen lance nozzle, and the line and oxygen lance nozzle of upper port center line and lower port center line
Central axis it is in the same plane.When blowing when such oxygen rifle structure, generally existing steel scrap amount and scrap ratio height, steel-making
Between it is long the defects of, the nozzle structure for the oxygen rifle that is further improved.
Utility model content
The technical problems to be solved in the utility model is against the above deficiency, to provide a kind of porous vortex type high-efficient oxygen lance spraying
Head, it is big that when blowing, forges area, and oxygen contacts the utilization rate for sufficiently improving oxygen with molten iron, molten iron can more preferable scorification, effectively contract
Short duration of blast.
In order to solve the above technical problems, the utility model uses following technical scheme:
A kind of porous vortex type high-efficient oxygen lance nozzle, including spray head, the spray head are equipped with perforative oxygen through-hole, oxygen
The axis of through-hole is not generally aligned in the same plane with spray head center line, and the upper port of oxygen through-hole is relative to lower port close to spray head center
Line；
The axis of oxygen through-hole warp of peroxide vent hole upper port on the projection line and spray head of spray head upper surface is formed
Swirl angle.
As an improvement the swirl angle is 6 °~15 °.
As an improvement the swirl angle is 8 °.
As an improvement the quantity of the oxygen through-hole be it is multiple, multiple oxygen through-holes are using the center of spray head as the center of circle
It is arranged at intervals on its side.
As an improvement the porous vortex type high-efficient oxygen lance nozzle further includes in the outer welded tube being fixedly connected with spray head
Welded tube, interior welded tube between outer welded tube and middle welded tube, are respectively formed channel between middle welded tube and interior welded tube, spray head is equipped with connection above-mentioned two
The cooling cavity of spray head is collectively formed in the cavity in a channel, channel and cavity.
As an improvement the lateral surface of the end on the interior welded tube far from spray head is equipped with chamfering.
As an improvement being equipped in mounting groove close on the interior welded tube far from mounting groove is equipped on the outside of spray head one end
Seal.
As an improvement being equipped at intervals with multiple mounting grooves and sealing ring on the interior welded tube.
The utility model after the above technical solution is adopted, compared with prior art, has the advantage that
Due to the utility model compared with the existing technology in oxygen lance nozzle its oxygen through-hole increase eddy flow angle, blow
Shi Zengjia blowing area, molten iron increase lateral stirring dynamics under the action of swirling eddy, improve the effective use of oxygen
Rate, more preferable slugging also meet the demand that steel mill increases steel scrap, the problems such as increasing scrap ratio, shorten duration of blast, this reality
With a kind of novel porous vortex type high-efficient oxygen lance nozzle compared with the existing technology in oxygen lance nozzle have very big advantage.
The utility model is described in detail with reference to the accompanying drawings and examples.
Detailed description of the invention
Fig. 1 is the principle schematic diagram of oxygen lance nozzle in background technique；
Fig. 2 is the schematic side view of Fig. 1；
Fig. 3 is a kind of principle schematic diagram of porous vortex type high-efficient oxygen lance nozzle of the utility model；
Fig. 4 is the schematic side view of Fig. 3；
Fig. 5 is a kind of structural schematic diagram of porous vortex type high-efficient oxygen lance nozzle of the utility model；
Fig. 6 is the structural schematic diagram of spray head in Fig. 5；
Fig. 7 is the schematic side view of Fig. 5；
In figure, 1- spray head, 11- oxygen through-hole, 12- cavity, the outer welded tube of 2-, welded tube in 3-, welded tube in 4-, 41- chamfering,
42- mounting groove, 5- sealing ring, 6- locating piece, the channel 7-, 8- oxygen through-hole.
Specific embodiment
For a clearer understanding of the technical features, objectives and effects of the utility model, now compareing Detailed description of the invention
Specific embodiment of the present utility model.
Embodiment 1
As Fig. 3, Fig. 4, Fig. 5 and Fig. 6 jointly shown in, a kind of porous vortex type high-efficient oxygen lance nozzle, including spray head 1 and with spray
First 1 outer welded tube 2, middle welded tube 3, the interior welded tube 4 being fixedly connected, between outer welded tube 2 and middle welded tube 3, between middle welded tube 3 and interior welded tube 4
Channel 7 is formed, spray head 1 is equipped with the cavity 12 for being connected to above-mentioned two channel, and the cooling use of spray head is collectively formed in channel 7 and cavity 12
Cavity.Locating piece 6 is equipped between middle welded tube 3 and interior welded tube 4.The lateral surface of end on interior welded tube 4 far from spray head 1 is equipped with
Chamfering 41.Multiple mounting grooves 42 are equipped with far from 1 one end outside spacers of spray head on interior welded tube 4, sealing ring is installed in mounting groove 42
5。
The spray head 1 is equipped with perforative oxygen through-hole 11, and the axis of oxygen through-hole 11 is located at different from 1 center line of spray head
In plane, the upper port of oxygen through-hole 11 is relative to lower port close to 1 center line of spray head；The axis of oxygen through-hole 11 is in spray head 1
The warp of 11 upper port of peroxide vent hole forms swirl angle on the projection line and spray head 1 of upper surface.Swirl angle is 6 °~15 °.This
Preferred swirl angle is 8 ° in embodiment.The quantity of oxygen through-hole 11 is five, and five oxygen through-holes 11 are with the center of spray head 1
The center of circle is uniformly arranged in its side.The quantity of oxygen through-hole 11 can also according to actual production need to be designed as it is multiple.
The center of the upper port of five oxygen through-holes 11 is located on same circumference, in the lower port of five oxygen through-holes 11
The heart is located on same circumference.Two intersection points, the line of two intersection points are formed by the arbitrary plane and two circumference of 1 center line of spray head
Angle with 1 center line of spray head is 11 °~15 °, and the preferred angle is 14.5 ° in the present embodiment.
In use, by a kind of 11 molten iron oxygen blast gas of oxygen through-hole of porous vortex type high-efficient oxygen lance nozzle, due to this reality
Eddy flow angle increased for oxygen lance nozzle in the prior art with Novel photo, when blowing increases blowing area, and molten iron is rotating
Lateral stirring dynamics is increased under the action of air-flow, improves the effective rate of utilization of oxygen, and more preferable slugging also meets steel mill's increasing
The demand for adding steel scrap, the problems such as increasing scrap ratio, shorten duration of blast, a kind of porous vortex type high-efficient of the utility model
Oxygen lance nozzle compared with the existing technology in oxygen lance nozzle have very big advantage.
In conclusion a kind of porous vortex type high-efficient oxygen lance nozzle of the utility model, it is big that when blowing, forges area, oxygen
Contact the utilization rate for sufficiently improving oxygen with molten iron, molten iron can more preferable scorification, effectively shorten duration of blast.
The above specific embodiments are only exemplary, is to enable those skilled in the art to better understand this
Utility model content should not be understood as the limitation to scope of protection of the utility model, as long as according to the utility model technology
Scheme improvements introduced, each falls within the protection scope of the utility model.
Claims (8)
1. a kind of porous vortex type high-efficient oxygen lance nozzle, including spray head (1), it is characterised in that: the spray head (1), which is equipped with, runs through
Oxygen through-hole (11), axis and spray head (1) center line of oxygen through-hole (11) be not generally aligned in the same plane, oxygen through-hole (11)
Upper port is relative to lower port close to spray head (1) center line；
The axis of oxygen through-hole (11) peroxide vent hole (11) upper port on the projection line of spray head (1) upper surface and spray head (1)
Warp formed swirl angle.
2. a kind of porous vortex type high-efficient oxygen lance nozzle as described in claim 1, it is characterised in that: the swirl angle is 6 °~
15°。
3. a kind of porous vortex type high-efficient oxygen lance nozzle as described in claim 1, it is characterised in that: the swirl angle is 8 °.
4. a kind of porous vortex type high-efficient oxygen lance nozzle as described in claim 1, it is characterised in that: the oxygen through-hole (11)
Quantity be it is multiple, multiple oxygen through-holes (11) are arranged at intervals on its side as the center of circle using the center of spray head (1).
5. a kind of porous vortex type high-efficient oxygen lance nozzle as described in claim 1, it is characterised in that: the porous spiral-flow type is high
Effect oxygen lance nozzle further includes the outer welded tube (2) being fixedly connected with spray head (1), middle welded tube (3), interior welded tube (4), outer welded tube (2) and
It is respectively formed channel (7) between middle welded tube (3), between middle welded tube (3) and interior welded tube (4), spray head (1), which is equipped with, is connected to above-mentioned two channel
(7) the cooling cavity of spray head is collectively formed in cavity (12), channel (7) and cavity (12).
6. a kind of porous vortex type high-efficient oxygen lance nozzle as claimed in claim 5, it is characterised in that: on the interior welded tube (4)
The lateral surface of end far from spray head (1) is equipped with chamfering (41).
7. a kind of porous vortex type high-efficient oxygen lance nozzle as claimed in claim 5, it is characterised in that: on the interior welded tube (4)
Far from mounting groove (42) are equipped on the outside of spray head (1) one end, sealing ring (5) are installed in mounting groove (42).
8. a kind of porous vortex type high-efficient oxygen lance nozzle as claimed in claim 7, it is characterised in that: on the interior welded tube (4)
It is equipped at intervals with multiple mounting grooves (42) and sealing ring (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822112404.6U CN209397236U (en) | 2018-12-15 | 2018-12-15 | A kind of porous vortex type high-efficient oxygen lance nozzle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822112404.6U CN209397236U (en) | 2018-12-15 | 2018-12-15 | A kind of porous vortex type high-efficient oxygen lance nozzle |
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| CN209397236U true CN209397236U (en) | 2019-09-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578032A (en) * | 2019-10-23 | 2019-12-17 | 辽宁科技大学 | Large converter blowing process method |
-
2018
- 2018-12-15 CN CN201822112404.6U patent/CN209397236U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578032A (en) * | 2019-10-23 | 2019-12-17 | 辽宁科技大学 | Large converter blowing process method |
| CN110578032B (en) * | 2019-10-23 | 2021-06-11 | 辽宁科技大学 | Large converter blowing process method |
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