CN218860779U - Steel-sticking-preventing device for oxygen lance for oxygen top-blown converter steelmaking - Google Patents

Abstract

The utility model relates to an antiseized steel device of oxygen top-blown converter steelmaking oxygen rifle, including the oxygen rifle body of a gun, nonrust steel sleeve, converter and flue, the top opposite side center department of converter is provided with the oxygen rifle body of a gun, the inside bottom department parcel that lies in the converter on the oxygen rifle body is provided with nonrust steel sleeve, the outside uniform weld fixation of nonrust steel sleeve has the antiseized strip of a plurality of, and be the integrated structure between nonrust steel sleeve and the antiseized strip, the both ends of antiseized strip are the arc structure, it is thick on the one end thickness that lies in the flue on the antiseized strip on the one end, and the thickness of keeping away from the one end of flue on the antiseized strip is thin on the one side. Less drop splashes and falls on the arc prevents that the strip or the arc outside the stainless steel sleeve pipe is prevented between the strip, and the drop on the arc is prevented the strip and is low down owing to going high, produces under the action of gravity and assembles and will drip, and the drop between the arc prevents that the strip also will produce easily because taking up space for a short time and assembles, and the drop will be assembled into the water and drop like this, avoids gluing the steel, and simple structure is stable.

Description

Steel-sticking-preventing device for oxygen lance for oxygen top-blown converter steelmaking

Technical Field

The utility model relates to the technical field related to the steelmaking of a top-blown oxygen converter, in particular to an anti-sticking steel device of an oxygen lance for the steelmaking of the top-blown oxygen converter.

Background

Since the advent of basic oxygen furnace steelmaking in Sweden in 1952, steel plants have been rapidly developed around the world, rapidly replacing open hearth and side blown converter steelmaking. The rapid development of steel production in the 60 th century of the 20 th century of japan benefits this. In 1964, three 30-ton-grade top-blown oxygen converters with nominal tonnage are introduced into the first steel in China, the top-blown oxygen converters are used for steel making, the oxygen lances play a decisive role in the top-blown oxygen converters, steel making workers, namely the oxygen lances are hearts of the converters for steel making, and the design and normal use of the oxygen lances are important links for determining whether the whole steel plant can be smoothly produced.

In the related technology, in the anti-sticking steel device of the oxygen lance for steelmaking of the oxygen top-blown converter with the authorization notice number of CN1142295C, the stainless steel sleeve matched with the lance body of the oxygen lance is assembled on the easy-to-stick steel part of the lance body of the oxygen lance, the characteristics of the stainless steel are utilized, the melting point is high, the strength is high, the surface is smooth, and molten steel is splashed on the stainless steel sleeve and is easy to fall off automatically; the sleeve and the gun body are not tightly combined, so that the sleeve is weakened by cooling, the temperature of the sleeve is higher than that of the gun body, and molten steel splashes onto the sleeve and is not easy to condense; the sleeve pipe and the lance body have corresponding space, the oxygen lance vibrates violently due to high-speed oxygen injection in the steel-making process, so that the lance body and the sleeve pipe vibrate and impact relatively, and the bonded steel shakes off at any time.

But the applicant thinks there is still less molten steel drop attached to on the stainless steel sleeve still in the in-service use process, because the drop is very little through the temperature and shake the unable steel that makes it drop of dual mode, will make oxygen rifle bottom take place the phenomenon of gluing the steel under long-time high temperature, increased the oxygen rifle body and glue the steel accident, reduce steelmaking operation rate, shorten the oxygen rifle life-span, increaseed steelmaking cost, reduced the comprehensive economic benefits of steel enterprise, increase workman intensity of labour, therefore, the utility model provides an oxygen top-blown converter steelmaking oxygen rifle prevents gluing the steel device.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a steel sticking prevention device for an oxygen lance for steelmaking of a top-blown oxygen converter, which solves the problem that in the prior art, because water drops pass through temperature very little and shake two modes, the water drops can not fall off, and the bottom of the oxygen lance is stuck at a high temperature for a long time.

In order to achieve the above purpose, the present application provides the following technical solutions: the utility model provides an antiseized steel device of oxygen top-blown converter steelmaking oxygen rifle, includes oxygen rifle body, stainless steel sleeve pipe, converter and flue, top one side center department of converter is provided with the flue, top opposite side center department of converter is provided with the oxygen rifle body, just the oxygen rifle body extends to in the inside of converter, the parcel of the inside bottom department that is located the converter on the oxygen rifle body is provided with the stainless steel sleeve pipe, the outside of stainless steel sleeve pipe evenly welded fastening has a plurality of antiseized strip, and be integrated structure between stainless steel sleeve pipe and the antiseized strip, the both ends of antiseized strip are the arc structure, it is on the side of being close to on the antiseized strip one end thickness that is located the flue is on the side, and the thickness of the one end of keeping away from on the antiseized strip the flue is on the side, the antiseized strip is also made of stainless steel material, and the thickness of stainless steel sleeve pipe is between 2-4mm, the quantity of antiseized strip is eight.

Preferably, a nitrogen seal is arranged on one side of the oxygen lance body, which is positioned at the top of the converter.

Preferably, the bottom end of the oxygen lance body is positioned in the converter and is provided with an oxygen lance nozzle.

Preferably, a molten steel bath is arranged in the bottom of the converter, and the oxygen lance nozzle is positioned at the center of one side of the top of the molten steel bath.

Preferably, the oxygen lance body comprises three conduits inside, wherein the inner side is an oxygen conduit, the middle is a cooling water inlet conduit, and the outer side is a cooling water outlet conduit.

Preferably, the inner diameters of the guide pipes are different, and the guide pipes are all seamless carbon steel pipes.

Preferably, the stainless steel sleeve and the oxygen lance body are fixed by welding.

To sum up, the utility model discloses a technological effect and advantage:

the utility model has the advantages of reasonable structure, design benefit, utilize stainless steel sleeve to protect the steel bonding position of oxygen rifle body, splash down on stainless steel sleeve at less drop, mainly utilize the antiseized strip of arc to realize antiseized effect, at first less drop blocks through the arc anti-sticking strip, make less drop splash down on the arc anti-sticking strip or on the arc anti-sticking strip outside the stainless steel sleeve on, the drop on the antiseized strip of arc is low down owing to going up, produce under the action of gravity and assemble and will drip, and the drop between the arc anti-sticking strip also will produce easily because it occupies space for a short time and assemble, the drop will be integrated water and drip like this, moreover, the steam generator is simple in structure, reasonable in design is ingenious, solve because the drop is very little through the temperature and shake the unable problem that makes it drop that it can't make the steel bonding phenomenon take place for the oxygen rifle bottom under long-time high temperature.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the internal structure of an anti-sticking device for an oxygen lance for steelmaking in a top-blown oxygen converter;

FIG. 2 is a schematic structural view of a stainless steel sleeve in an anti-sticking device of an oxygen lance for steelmaking in a top-blown oxygen converter;

FIG. 3 is a schematic view of the structure of the outer side of a stainless steel sleeve in an anti-sticking device for an oxygen lance for steelmaking of a top-blown oxygen converter;

FIG. 4 is an enlarged view of the structure at A in FIG. 1;

FIG. 5 is a schematic view of the internal structure of an oxygen lance body in an anti-sticking device for an oxygen lance for steelmaking of a top-blown oxygen converter;

in the figure: 1. an oxygen lance body; 11. sealing and buckling by nitrogen; 12. an oxygen lance nozzle; 13. a conduit; 14. an oxygen conduit; 15. a cooling water inlet conduit; 16. a cooling water outlet conduit; 2. a stainless steel sleeve; 21. an arc-shaped anti-sticking strip; 3. a converter; 31. a molten steel bath.

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.

The embodiment is as follows: referring to fig. 1-5, an anti-stick steel device for an oxygen lance for steelmaking of a top-blown oxygen converter comprises an oxygen lance body 1, a stainless steel sleeve 2, a converter 3 and a flue 4, wherein the flue 4 is arranged at the center of one side of the top of the converter 3, the oxygen lance body 1 is arranged at the center of the other side of the top of the converter 3, the oxygen lance body 1 extends into the converter 3, the stainless steel sleeve 2 is wrapped at the bottom end of the converter 3 on the oxygen lance body 1, a plurality of anti-stick strips 21 are uniformly welded and fixed on the outer side of the stainless steel sleeve 2, the stainless steel sleeve 2 and the anti-stick strips 21 are of an integrated structure, both ends of the anti-stick strips 21 are of arc structures, the thickness of the anti-stick strips 21 close to the end of the flue 4 is thicker, and the thickness of the anti-stick strips 21 far away from the flue 4 is thinner, the anti-sticking strips 21 are also made of stainless steel, the thickness of the stainless steel sleeve 2 is 2-4mm, the number of the anti-sticking strips 21 is eight, the steel sticking position of the oxygen lance body 1 is protected by the stainless steel sleeve 2, small water drops splash on the stainless steel sleeve 2, the anti-sticking effect is realized by mainly utilizing the arc anti-sticking strips 21, firstly, the small water drops are blocked by the arc anti-sticking strips 21, so that the small water drops splash on the arc anti-sticking strips 21 or on the arc anti-sticking strips 21 of the stainless steel sleeve outside 2, the water drops on the arc anti-sticking strips 21 are generated to be converged under the action of gravity due to high and low positions, and the water drops between the arc anti-sticking strips 21 are also easy to be converged due to small occupied space, so that the small water drops are converged into water drops.

Referring to fig. 1-5, a nitrogen seal 11 is arranged on one side of the top of a converter 3 on an oxygen lance body 1, an oxygen lance nozzle 12 is arranged in the converter 3 at the bottom of the oxygen lance body 1, a molten steel bath 31 is arranged in the bottom of the converter 3, the oxygen lance nozzle 12 is arranged at the center of one side of the top of the molten steel bath 31, three guide pipes 13 are arranged in the oxygen lance body 1, an oxygen guide pipe 14 is arranged on the inner side, a cooling water inlet guide pipe 15 is arranged in the middle, a cooling water outlet guide pipe 16 is arranged on the outer side, the inner diameters of the guide pipes 13 are different, the guide pipes 13 are all seamless carbon steel pipes, and the stainless steel sleeve 2 and the oxygen lance body 1 are fixed by welding.

This practical theory of operation: utilize stainless steel sleeve to protect the steel bonding position of oxygen rifle body, splash down on stainless steel sleeve at less drop, mainly utilize the antiseized effect of arc antisticking strip realization, at first less drop blocks through the arc antisticking strip, make less drop splash down on the arc antisticking strip or on the arc between the stackingstrip outside the stainless steel sleeve, the drop on the antiseized strip of arc is because high-low down, produce under the action of gravity and assemble and will drip, and the drop between the arc antisticking strip also will produce easily because it is little to take up space and assemble, the drop will be assembled into the water and drip like this, moreover, the steam generator is simple in structure and stable, and reasonable in design is ingenious.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (7)

1. The utility model provides an antiseized steel device of oxygen rifle of oxygen top-blown converter steelmaking which characterized in that: including oxygen lance body (1), stainless steel sleeve (2), converter (3) and flue (4), top one side center department of converter (3) is provided with flue (4), the top opposite side center department of converter (3) is provided with oxygen lance body (1), just oxygen lance body (1) extends to in the inside of converter (3), lie in on oxygen lance body (1) the inside bottom department parcel of converter (3) is provided with stainless steel sleeve (2), the even welded fastening in outside of stainless steel sleeve (2) has a plurality of antiseized strip (21), just stainless steel sleeve (2) with be the integral structure between antiseized strip (21), the both ends of antiseized strip (21) are the arc structure, be close to on antiseized strip (21) and lie in the one end thickness of flue (4) is on the thick side, and keep away from on antiseized strip (21) the thickness of one end of flue (4) is on the thin on the side, antiseized strip (21) also is the stainless steel manufacturing, and stainless steel sleeve (2) between the thickness of flue (4), eight antiseized strip (21) is the quantity.

2. The anti-sticking device for the oxygen lance for steelmaking of the basic oxygen furnace as claimed in claim 1, which is characterized in that: and a nitrogen seal (11) is arranged on one side of the oxygen lance body (1) positioned at the top of the converter (3).

3. The anti-sticking device for the oxygen lance for steelmaking of the basic oxygen furnace as claimed in claim 1, which is characterized in that: the bottom end of the oxygen lance body (1) is positioned in the converter (3) and is provided with an oxygen lance nozzle (12).

4. The anti-sticking device for the oxygen lance for steelmaking of the basic oxygen furnace as claimed in claim 1, which is characterized in that: a molten steel bath (31) is arranged in the bottom of the converter (3), and the oxygen lance nozzle (12) is positioned in the center of one side of the top of the molten steel bath (31).

5. The anti-sticking device for the oxygen lance for steelmaking of the basic oxygen furnace as claimed in claim 1, which is characterized in that: the oxygen lance body (1) comprises three conduits (13) inside, wherein the inner side is an oxygen conduit (14), the middle is a cooling water inlet conduit (15), and the outer side is a cooling water outlet conduit (16).

6. The anti-sticking device for the oxygen lance for steelmaking of the top-blown oxygen converter according to claim 5, which is characterized in that: the inner diameters of the guide pipes (13) are different, and the guide pipes (13) are all seamless carbon steel pipes.

7. The anti-sticking device for the oxygen lance for steelmaking of the top-blown oxygen converter according to claim 1, which is characterized in that: the stainless steel sleeve (2) and the oxygen lance body (1) are fixed by welding.

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