CN210856200U

CN210856200U - Composite coherent oxygen lance

Info

Publication number: CN210856200U
Application number: CN201921646522.3U
Authority: CN
Inventors: 田长宝
Original assignee: Nanjing Xuanpu Metallurgical Technology Co ltd
Current assignee: Nanjing Xuanpu Metallurgical Technology Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-06-26
Anticipated expiration: 2029-09-30

Abstract

The utility model discloses a combined type coherent oxygen lance, which comprises a main oxygen inlet main pipe, wherein one end of the main oxygen inlet main pipe is symmetrically provided with two main oxygen branch pipes, the two main oxygen branch pipes are both connected with the main oxygen inlet main pipe by flanges, gas pipelines are respectively sleeved outside the two main oxygen branch pipes, auxiliary oxygen pipelines are respectively sleeved outside the two gas pipelines, the interiors of the two main oxygen branch pipes are both provided with main oxygen channels, gas channels are respectively arranged between the two main oxygen branch pipes and the corresponding gas pipelines, auxiliary oxygen channels are respectively arranged between the two gas pipelines and the corresponding auxiliary oxygen pipelines, the gas inlet branch pipes are connected between the two gas pipelines by flanges, the central position of the gas inlet main pipe is connected with a gas inlet branch pipe by flanges, and the auxiliary oxygen inlet branch pipes are connected between the two auxiliary oxygen pipelines by flanges, the utility model discloses a two integrated coherent oxygen lance capable of supplying oxygen and impacting in an electric furnace in a wider, and the jet distance of the main oxygen flow is farther, and the jet force is stronger.

Description

Composite coherent oxygen lance

Technical Field

The utility model relates to a combined type oxygen rifle tied in a bundle belongs to oxygen rifle technical field tied in a bundle.

Background

The coherent oxygen lance is based on the principle that the outer layer surrounding accompanying flow is added around the traditional oxygen lance, so that the expansion and the attenuation of the central supersonic jet flow are smaller, and the supersonic jet flow is longer. The penetration depth and the stirring strength of the oxygen jet flow to a molten pool are improved, and simultaneously, because the attenuation of the jet flow speed is delayed, the converting lance position of the oxygen lance can be improved, the impact depth of the jet flow to molten steel is not influenced, and the service life of a nozzle of the oxygen lance is prolonged. The furnace wall coherent oxygen lance mainly has the functions of strengthening electric furnace smelting, shortening smelting time, reducing smelting cost, improving molten steel quality, reducing labor intensity of workers and improving the automation level of electric furnace smelting.

The coherent oxygen lances used on some domestic electric furnaces are only provided with one nozzle, when oxygen is supplied to the large electric furnace, the coverage of one nozzle is slightly insufficient, so that oxygen is supplied to partial positions in the electric furnace insufficiently, the steelmaking process is influenced, the nozzles are damaged in the working process, the whole steelmaking process needs to be stopped, the nozzles are replaced, time is wasted, and the steelmaking efficiency is delayed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a combined type oxygen rifle tied in a bundle to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a combined coherent oxygen lance comprises a main oxygen inlet main pipe, wherein one end of the main oxygen inlet main pipe is symmetrically provided with two main oxygen branch pipes, the two main oxygen branch pipes are connected with flanges of the main oxygen inlet main pipe, gas pipelines are sleeved on the outer sides of the two main oxygen branch pipes, auxiliary oxygen pipelines are sleeved on the outer sides of the two gas pipelines, main oxygen channels are arranged in the two main oxygen branch pipes, gas channels are arranged between the two main oxygen branch pipes and the corresponding gas pipelines, auxiliary oxygen channels are arranged between the two gas pipelines and the corresponding auxiliary oxygen pipelines, a gas inlet branch pipe is connected between the two gas pipelines in a flange mode, the central position of the gas inlet branch pipe is connected with the main gas inlet main pipe in a flange mode, an auxiliary oxygen inlet branch pipe is connected between the two auxiliary oxygen pipelines in a flange mode, and the central position of the auxiliary oxygen inlet branch pipe is connected with the auxiliary oxygen inlet main pipe in a, two equal flange joint in the top end of vice oxygen pipeline has the shower nozzle, two the shower nozzle all includes main oxygen orifice, a plurality of gas orifice and a plurality of vice oxygen orifice, main oxygen orifice, a plurality of gas orifice and a plurality of vice oxygen orifice set up from inside to outside in proper order, main oxygen orifice, a plurality of gas orifice and a plurality of vice oxygen orifice are corresponding with main oxygen passageway, gas passageway and vice oxygen passageway in proper order.

Preferably, the position corresponding to the main oxygen channel in the spray head is provided with an accelerating area.

Preferably, the joint of the two spray heads is provided with a sealing ring.

Preferably, the sum of the cross-sectional areas of the two main oxygen branch pipes is smaller than the cross-sectional area of the main oxygen inlet main pipe.

Preferably, the primary oxygen nozzle hole is larger than the fuel gas nozzle hole and the secondary oxygen nozzle hole.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a main oxygen inlet main pipe's one end symmetry is provided with two main oxygen branch pipes, two main oxygen branch pipes all flange joint with main oxygen inlet main pipe, gas pipeline has all been cup jointed in two main oxygen branch pipe outsides, vice oxygen pipeline has all been cup jointed in two gas pipeline outsides, flange joint has gas inlet branch pipe between two gas pipelines, gas inlet branch pipe central point flange joint has gas inlet main pipe, flange joint has vice oxygen inlet branch pipe between two vice oxygen pipelines, vice oxygen inlet branch pipe's central point flange joint has vice oxygen inlet main pipe, the top end of two vice oxygen pipelines all flange joint has the shower nozzle, supply oxygen to the electric stove through two integral type coherent oxygen lances, to some large-scale electric stoves, still can supply oxygen on a large scale, to small-size electric stove, carry out more abundant oxygen supply in the electric stove, to the impact on a large scale in the electric stove, the quality of finished products is guaranteed, when one sprayer is damaged in the working process, the other sprayer can continue to supply oxygen, the steelmaking process does not need to be stopped immediately, and the time is saved.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the structure of the nozzle of the present invention;

fig. 3 is an enlarged schematic view of the structure a of the present invention.

In the figure: 1. a main oxygen intake main pipe; 2. a main oxygen branch pipe; 3. a secondary oxygen inlet manifold; 4. a secondary oxygen inlet main pipe; 5. a gas inlet main pipe; 6. a gas inlet branch pipe; 7. a spray head; 8. secondary oxygen jet holes; 9. spraying a gas orifice; 10. a primary oxygen orifice; 11. a gas pipeline; 12. a secondary oxygen conduit; 13. an acceleration zone; 14. a secondary oxygen channel; 15. a gas channel; 16. a primary oxygen channel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a composite coherent oxygen lance comprises a main oxygen inlet main pipe 1, wherein one end of the main oxygen inlet main pipe 1 is symmetrically provided with two main oxygen branch pipes 2, the two main oxygen branch pipes 2 are both in flange connection with the main oxygen inlet main pipe 1, the outer sides of the two main oxygen branch pipes 2 are both sleeved with gas pipelines 11, the outer sides of the two gas pipelines 11 are both sleeved with auxiliary oxygen pipelines 12, the inner parts of the two main oxygen branch pipes 2 are both main oxygen channels 16, the gas channels 15 are respectively arranged between the two main oxygen branch pipes 2 and the corresponding gas pipelines 11, the auxiliary oxygen channels 14 are respectively arranged between the two gas pipelines 11 and the corresponding auxiliary oxygen pipelines 12, the gas inlet branch pipes 6 are in flange connection between the two gas pipelines 11, the gas inlet main pipe 5 is in flange connection at the central position of the gas inlet branch pipe 6, the auxiliary oxygen inlet branch pipe 3 is in flange connection with the auxiliary oxygen inlet main pipe 4 at the central position of the auxiliary oxygen inlet, the top end parts of two auxiliary oxygen pipelines 12 are connected with a nozzle 7 in a flange way, the two nozzles 7 respectively comprise a main oxygen spray hole 10, a plurality of gas spray holes 9 and a plurality of auxiliary oxygen spray holes 8, the main oxygen spray hole 10, the plurality of gas spray holes 9 and the plurality of auxiliary oxygen spray holes 8 are sequentially arranged from inside to outside, the main oxygen spray hole 10, the plurality of gas spray holes 9 and the plurality of auxiliary oxygen spray holes 8 are sequentially corresponding to a main oxygen channel 16, a gas channel 15 and an auxiliary oxygen channel 14, oxygen is supplied to the electric furnace through two integrated bundled oxygen lances, some large-scale electric furnaces can still supply oxygen in a large range, for small-scale electric furnaces, more sufficient oxygen is supplied to the electric furnace, the large-scale impact is carried out to the electric furnace, the quality of finished products is ensured, when one nozzle 7 is damaged in the working process, the other nozzle 7 can continue to supply oxygen, and the steelmaking process does not need to be, and time is saved.

The position that the shower nozzle 7 is inside to correspond with main oxygen passageway 16 has accelerating zone 13, through accelerating zone 13, make the speed of main oxygen when main oxygen orifice 10 is being passed through faster, the distance of impact is farther, the impact force is bigger, the joint department of two shower nozzles 7 all is provided with the sealing washer, the sum of the cross sectional area of two main oxygen branch pipes 2 is less than the main oxygen and admits air the cross sectional area who is responsible for 1, make main oxygen in the main oxygen admit air and be responsible for 1 and have faster speed when getting into two main oxygen pipelines, thereby further strengthen the jet dynamics and the jet distance of main oxygen when main oxygen passes through main oxygen orifice 10, main oxygen orifice 10 is greater than gas orifice 9 and vice oxygen orifice 8, supplementary more main oxygen sprays, abundant the oxygen suppliment that carries on in the electric furnace.

Specifically, when the utility model is used, the main oxygen inlet main pipe 1 supplies oxygen, the main oxygen can be transported into two main oxygen channels 16, the gas inlet main pipe 5 and the gas inlet branch pipe 6 transport gas into two gas channels 15, the auxiliary oxygen inlet main pipe 4 and the auxiliary oxygen inlet branch pipe 3 transport auxiliary oxygen into two auxiliary oxygen pipelines 12, the main oxygen, the gas and the auxiliary oxygen are respectively ejected through the main oxygen orifice 10, the gas orifice 9 and the auxiliary oxygen nozzle 7 on the nozzle 7, the gas flow and the auxiliary oxygen flow are all around the periphery of the main oxygen flow, the auxiliary oxygen and the gas add a layer of gas flow on the periphery of the main oxygen flow after combustion, so that the ejected main oxygen flow can not be diffused, thereby ensuring the ejection speed of the main oxygen flow, because the sum of the cross sectional areas of the two main oxygen inlet branch pipes 2 is smaller than the cross sectional area of the main oxygen inlet main pipe 1, the ejection speed of the main oxygen is strengthened, when the main oxygen passes through the accelerating area 13, the injection speed is further improved, so that the main oxygen flow is injected farther, and the impact force is stronger.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A composite coherent oxygen lance comprises a main oxygen inlet main pipe (1), and is characterized in that two main oxygen branch pipes (2) are symmetrically arranged at one end of the main oxygen inlet main pipe (1), the two main oxygen branch pipes (2) are both connected with the main oxygen inlet main pipe (1) through flanges, gas pipelines (11) are sleeved at the outer sides of the two main oxygen branch pipes (2), auxiliary oxygen pipelines (12) are sleeved at the outer sides of the two gas pipelines (11), main oxygen channels (16) are arranged in the two main oxygen branch pipes (2), gas channels (15) are arranged between the two main oxygen branch pipes (2) and the corresponding gas pipelines (11), auxiliary oxygen channels (14) are arranged between the two gas pipelines (11) and the corresponding auxiliary oxygen pipelines (12), a gas inlet branch pipe (6) is connected between the two gas pipelines (11), and a gas inlet main pipe (5) is connected with a flange at the central position of the gas inlet branch pipe (6), two flange joint has vice oxygen inlet branch pipe (3) between vice oxygen pipeline (12), the central point of vice oxygen inlet branch pipe (3) puts flange joint has vice oxygen to admit air and is responsible for (4), two the equal flange joint in top end of vice oxygen pipeline (12) has shower nozzle (7), two shower nozzle (7) all include main oxygen orifice (10), a plurality of gas orifice (9) and a plurality of vice oxygen orifice (8), main oxygen orifice (10), a plurality of gas orifice (9) and a plurality of vice oxygen orifice (8) set up from inside to outside in proper order, main oxygen orifice (10), a plurality of gas orifice (9) and a plurality of vice oxygen orifice (8) are corresponding with main oxygen passageway (16), gas channel (15) and vice oxygen passageway (14) in proper order.

2. The composite coherent oxygen lance of claim 1, wherein: an accelerating area (13) is arranged in the spray head (7) corresponding to the main oxygen channel (16).

3. The composite coherent oxygen lance of claim 1, wherein: and sealing rings are arranged at the joints of the two nozzles (7).

4. The composite coherent oxygen lance of claim 1, wherein: the sum of the cross-sectional areas of the two main oxygen branch pipes (2) is smaller than the cross-sectional area of the main oxygen inlet pipe (1).

5. The composite coherent oxygen lance of claim 1, wherein: the main oxygen jet hole (10) is larger than the fuel gas jet hole (9) and the auxiliary oxygen jet hole (8).