CN213772109U - Quick change device for converter steelmaking oxygen lance - Google Patents
Quick change device for converter steelmaking oxygen lance Download PDFInfo
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- CN213772109U CN213772109U CN202022531706.4U CN202022531706U CN213772109U CN 213772109 U CN213772109 U CN 213772109U CN 202022531706 U CN202022531706 U CN 202022531706U CN 213772109 U CN213772109 U CN 213772109U
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- oxygen lance
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- oxygen rifle
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Abstract
The utility model discloses a quick change device suitable for converter steelmaking oxygen rifle, including oxygen rifle shower nozzle, oxygen rifle body and lift dolly body, the welding has the quick change positioning seat on the lift dolly body, installs the oxygen rifle body on the quick change positioning seat perpendicularly, and the oxygen rifle shower nozzle is installed to the front end of the oxygen rifle body, oxygen rifle body trailing end connection has 3 metal collapsible tubes, the quick change safety lock is installed to the lower part of quick change device, and oxygen rifle quick change upper portion is passed through the steel pipe and is linked to each other with oxygen rifle tail, and oxygen rifle quick change lower part passes through the flange and links to each other with oxygen suppliment metal collapsible tube, water supply metal collapsible tube, return metal collapsible tube respectively. The utility model discloses can realize the online quick replacement of oxygen rifle of different specification models, can realize that the oxygen rifle is accurate fixed on the lift dolly, can realize that the accurate of oxygen rifle tail pipe inserts sealedly, can ensure flexibility, reliability and the long-term stability of rifle in-process of trading.
Description
Technical Field
The utility model relates to the technical field of quick change devices of oxygen lances, in particular to a quick change device for a converter steelmaking oxygen lance.
Background
The oxygen lance is special equipment used for modern converter steelmaking and consists of an oxygen lance nozzle, a lance body, a lance tail, an installation support and a lance tail connecting piece (flange type). The oxygen lance nozzle has the main functions of injecting oxygen into a molten pool of a converter to realize thermochemical reaction of high-temperature smelting, the lance tail of the oxygen lance consists of three steel pipes, wherein a central pipe is an oxygen supply pipe, a central pipe is a cooling water supply pipe, an outer pipe is a cooling water return pipe, a mounting support on a lance body is a support for fixing the oxygen lance on an oxygen lance lifting trolley, and a lance tail connecting piece is used for connecting an oxygen supply and water supply metal hose to a flange of a lance tail pipe to realize the functions of safe oxygen supply and water supply.
Because the oxygen lance nozzle has the possibility of burning loss during the steel making process when oxygen gas flow is injected in high-temperature liquid slag (1800 ℃) and high-temperature reaction, the service life of each oxygen lance nozzle does not exceed 300-400 furnace steel under the normal production condition, when the oxygen lance nozzle leaks water, a new nozzle needs to be replaced in time, at this time, a quick-switching valve in an oxygen supply and water supply and return valve station needs to be closed, a maintenance worker is responsible for disassembling a connecting flange between an oxygen lance tail pipe and a metal hose and then hanging the burning loss oxygen lance off a lifting trolley, the whole maintenance process has the disadvantages of severe working environment (the environmental temperature is more than or equal to 40 ℃), large disassembly workload, long consumed time and difficult problem of accumulation for many years, and a novel oxygen lance quick-changing device is developed based on the existence of the problems.
The flange connection mode is adopted mostly in the present converter steelmaking enterprise at home, and the quick change technique of oxygen rifle is bright to be used, and there is certain problem in the similar product of thinking, research and development, trial mostly of the engineering technical staff of domestic steel enterprise, and specific problem has following several:
1. the installation between the oxygen lance and the lifting trolley is not provided with a proper accurate positioning device, and the center line of the lance body is difficult to be rapidly superposed with the center line of the converter, thereby influencing the basic definition of 'quick change'.
2. The accurate inserting of rifle tail quick-change piece is inaccurate, and the field usage process is because of quick-change head oxygen leakage, and production "loses the oxygen" phenomenon appears, and the actual oxygen flow is the actual volume promptly, and the problem that the smelting time is longer again to the fail safe nature of quick change has been influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a quick change device for converter steelmaking oxygen rifle to solve the problem that provides among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the quick change device comprises an oxygen lance nozzle, an oxygen lance body and a lifting trolley body, wherein a quick change positioning seat is welded on the lifting trolley body, the oxygen lance body is vertically installed on the quick change positioning seat, the oxygen lance nozzle is installed at the front end of the oxygen lance body, a metal hose is connected to the tail part of the oxygen lance body, a quick change safety lock is installed on one side of the quick change positioning seat, the oxygen lance quick change device is provided with an oxygen lance quick change upper part and an oxygen lance quick change lower part respectively, the oxygen lance quick change upper part is connected with an oxygen lance tail pipe through a steel pipe, the oxygen lance quick change lower part is connected with an oxygen supply metal hose, a water supply metal hose and a water return metal hose in a flange mode respectively, the oxygen supply metal hose is communicated with the tail end of the oxygen lance body, and the water supply metal hose and the water return metal hose are communicated with the side wall of the tail end of the oxygen lance body.
Preferably, an oxygen lance rapid centering device is installed at the joint between the quick-change positioning seat and the oxygen lance body, the oxygen lance rapid centering device is of an annular limiting structure, and the oxygen lance body is located inside the oxygen lance rapid centering device.
Preferably, one end of the quick-change safety lock is hinged, the other end of the quick-change safety lock is provided with a locking bolt, and the quick-change safety lock and the quick-change positioning seat are arranged in parallel.
Preferably, the lower part of the oxygen lance quick-change part, the quick-change safety lock and the quick centering device are on the same plane, and the outer side of the quick plug is provided with an adjusting return spring.
Preferably, an oxygen lance hanger is arranged at the tail end of the oxygen lance body.
Preferably, an oxygen lance anti-falling device is installed on the side wall of the lifting trolley body.
Compared with the prior art, the beneficial effects of the utility model are that: the oxygen lance online quick replacement of different specifications and models can be realized, the oxygen lance can be accurately fixed on the lifting trolley, the oxygen lance tail pipe can be accurately inserted and sealed, and the flexibility, reliability and long-term stability in the lance replacement process can be ensured.
Drawings
Fig. 1 is a schematic front structural view of the present invention;
fig. 2 is a schematic side view of the present invention.
In the figure: 1. an oxygen lance nozzle; 2. an oxygen lance body; 3. an oxygen lance rapid centering device; 4. quickly replacing a safety lock; 5. a lifting trolley body; 6. quickly replacing the upper part of the oxygen lance; 7. quickly replacing the lower part of the oxygen lance; 8. a hose connection flange; 9. an oxygen supply metal hose; 10. a water supply metal hose; 11. a backwater metal hose; 12. an oxygen lance hanger; 13. an oxygen lance anti-falling device; 14. and (5) quickly changing the positioning seat.
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. 1-2, the present invention provides an embodiment: a quick-change device suitable for an oxygen lance for converter steelmaking comprises an oxygen lance nozzle 1, an oxygen lance body 2 and a lifting trolley body 5, wherein a quick-change positioning seat 14 is welded on the lifting trolley body 5, an oxygen lance anti-falling device 13 is installed on the side wall of the lifting trolley body 5, the oxygen lance body 2 is vertically installed on the quick-change positioning seat 14, an oxygen lance quick-centering device 3 is installed at the joint between the quick-change positioning seat 14 and the oxygen lance body 2, the oxygen lance quick-centering device 3 is of an annular limiting structure, and the oxygen lance body 2 is located inside the oxygen lance quick-centering device 3;
the front end of the oxygen lance body 2 is provided with an oxygen lance nozzle 1, and the tail end of the oxygen lance body 2 is provided with an oxygen lance hanger 12;
the tail part of the oxygen lance body 2 is connected with a steel pipe and welded on the quick-change part (6), 3 metal hoses are connected below the quick-change lower part (7) of the oxygen lance, the quick-change safety lock 4 is installed on the oxygen lance body 2 on one side of the quick-change positioning seat 14, the lower end of the quick-change safety lock 4 is hinged, the hinged seat is welded below the quick-change lower part (7) of the oxygen lance, the upper end of the quick-change safety lock (4) is a bolt locking part, and the quick-change part (6) is locked in an opening screwing mode, so that the locking process is simplified, and meanwhile, the locking bolt is prevented from being lost. And the quick-change safety lock (4) is arranged in parallel with the quick-change positioning seat (14).
The oxygen lance quick-change device is divided into a quick-change piece (6) and an oxygen lance quick-change lower part (7), the upper quick-change piece (6) is welded with the oxygen lance body (2), a sealing piece of the upper quick-change piece (6) is in a female head sealing form, the oxygen lance quick-change lower part (7) is in a male head sealing form, and an adjusting reset spring is arranged on the outer side of the male head, so that the sealing reliability is improved.
The quick-change upper part of the oxygen lance is connected with a tail pipe of the oxygen lance through a steel pipe, the quick-change lower part of the oxygen lance is respectively connected with an oxygen supply metal hose, a water supply metal hose and a water return metal hose in a flange mode, the oxygen supply metal hose is communicated with the tail end of the oxygen lance body, and the water supply metal hose and the water return metal hose are communicated with the side wall of the tail end of the oxygen lance body.
The working principle is as follows: when the quick-change oxygen lance centering device is used, firstly, the oxygen lance body (2) is hung into the oxygen lance quick-change centering device (3), on the premise of ensuring the centering of the quick positioning seat, after the quick-change part upper part (6) and the oxygen lance quick-change lower part (7) are accurately inserted, the safety lock (4) is fastened, the operation of quickly changing the oxygen lance can be completed, then, the oxygen lance (2) is subjected to oxygen feeding, water feeding and leakage checking, and the normal production and use can be carried out after no leakage exists.
When oxygen lances with different specifications and models need to be replaced, firstly, the type of the oxygen lance quick-change part upper part (6), the oxygen lance quick-change part lower part (7) and the oxygen lance quick centering device are adjusted, and then the oxygen lance quick-change part can be replaced.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. If similar, should be considered as the scope of legal infringement.
Claims (6)
1. The utility model provides a quick change device suitable for converter steelmaking oxygen rifle, includes oxygen rifle shower nozzle (1), oxygen rifle body (2) and lifting trolley body (5), its characterized in that: the oxygen lance quick-change structure is characterized in that a quick-change positioning seat (14) is welded on the lifting trolley body (5), an oxygen lance body (2) is vertically installed on the quick-change part upper portion (6), an oxygen lance nozzle (1) is installed at the front end of the oxygen lance body (2), the tail portion of the oxygen lance body (2) is connected to the quick-change part upper portion (6), an oxygen lance quick-change lower portion (7) is installed on the lifting trolley body (5), three metal hoses (9, 10 and 11) are installed on the oxygen lance quick-change lower portion (7), a quick-change safety lock (4) is installed on the oxygen lance quick-change lower portion (7), the quick-change safety lock (4) is distributed on the oxygen lance quick-change lower portion (7), the oxygen lance quick-change structure can be divided into an oxygen lance quick-change upper portion (6) and an oxygen lance quick-change lower portion (7), the oxygen lance quick-change upper portion (6) is connected with the oxygen lance body (2) through a steel pipe, the oxygen lance quick-change lower portion (7) is connected with the metal hoses (9) through a flange, 10. 11), the oxygen supply metal hose (9) is communicated with the tail end of the oxygen lance body (2), and the water supply metal hose (10) and the water return metal hose (11) are communicated with the side wall of the tail end of the oxygen lance body (2).
2. The quick-change device applicable to the converter steelmaking oxygen lance of claim 1 is characterized in that: an oxygen lance rapid centering device (3) is arranged at the joint between the quick-change positioning seat (14) and the oxygen lance body (2), the oxygen lance rapid centering device (3) is of an annular limiting structure, and the oxygen lance body (2) is positioned inside the oxygen lance rapid centering device (3).
3. The quick-change device applicable to the converter steelmaking oxygen lance of claim 1 is characterized in that: the quick-change safety lock (4) adopts a bolt locking mode, the lower part of the locking bolt is hinged with the lower part (7) of the quick-change part, and the upper part of the quick-change safety lock (4) and the upper part (6) of the quick-change part adopt an opening locking mode.
4. The quick-change device applicable to the converter steelmaking oxygen lance of claim 1 is characterized in that: the oxygen lance quick-change lower part (7) is positioned on the same plane with the quick-change safety lock (4) and the quick-change positioning seat (14), and a return spring is arranged on the outer side of a quick plug of the oxygen lance quick-change lower part (7).
5. The quick-change device applicable to the converter steelmaking oxygen lance of claim 1 is characterized in that: an oxygen lance hanger (12) is arranged at the tail end of the oxygen lance body (2).
6. The quick-change device applicable to the converter steelmaking oxygen lance of claim 1 is characterized in that: an oxygen lance anti-falling device (13) is arranged on the side wall of the lifting trolley body (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022531706.4U CN213772109U (en) | 2020-11-05 | 2020-11-05 | Quick change device for converter steelmaking oxygen lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022531706.4U CN213772109U (en) | 2020-11-05 | 2020-11-05 | Quick change device for converter steelmaking oxygen lance |
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| CN213772109U true CN213772109U (en) | 2021-07-23 |
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| CN202022531706.4U Active CN213772109U (en) | 2020-11-05 | 2020-11-05 | Quick change device for converter steelmaking oxygen lance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114085946A (en) * | 2021-11-23 | 2022-02-25 | 广东韶钢松山股份有限公司 | Spray nozzle mounting mechanism and oxygen lance repairing device |
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2020
- 2020-11-05 CN CN202022531706.4U patent/CN213772109U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114085946A (en) * | 2021-11-23 | 2022-02-25 | 广东韶钢松山股份有限公司 | Spray nozzle mounting mechanism and oxygen lance repairing device |
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