Combustion oxygen lance structure

Abstract

The utility model relates to the technical field of oxygen lances, in particular to a combustion oxygen lance structure which comprises an oxygen lance body and a sleeve, the oxygen lance body comprises a first outer pipe body and a second outer pipe body, a first inner pipe body is inserted into the first outer pipe body, a first positioning plate is installed on the outer surface of the tail end of the first outer pipe body, and a second inner pipe body is installed on the second outer pipe body. An oxygen spraying head is installed at the tail end of the second outer pipe body, a second inner pipe body is inserted into the second outer pipe body, a second positioning plate is installed on the outer surface of the second outer pipe body, corresponding positioning grooves are formed in the side end of the first positioning plate and the side end of the second positioning plate, and the sleeve is installed on the outer side of the first outer pipe body and the outer side of the second outer pipe body. The two ends of the sleeve are inserted into the positioning grooves, a secondary oxygen spraying pipe communicating with the sleeve is installed on the sleeve, and an electromagnetic valve is arranged on the secondary oxygen spraying pipe. The oxygen lance has the advantages that the oxygen lance is composed of a plurality of parts, the whole oxygen lance does not need to be replaced when the oxygen lance is locally damaged, more secondary combustion heat can be generated, and carbon emission is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen guns, in particular to a combustion oxygen gun structure. Background Art

[0002] The oxygen lance is a tubular device that blows high-pressure, high-purity oxygen at supersonic speed into the top of the metal pool in the converter and is equipped with a high-pressure water cooling protection system. It is also called a spray gun. It is an important equipment for oxygen top blowing steelmaking. Its performance characteristics directly affect the smelting effect and blowing time, thereby affecting the quality and output of steel.

[0003] At present, most oxygen lances are of integral structure. When local damage occurs, they need to be replaced as a whole, which increases the cost of replacing the oxygen lance. In addition, the reaction efficiency between oxygen and CO produced by the decarbonization reaction is low during use of the oxygen lance. Not only can the combustion and heat release not be maximized, but the carbon emissions are high, which is not conducive to reducing carbon emissions. Utility Model Content

[0004] The utility model aims to provide a combustion oxygen lance structure, which has the advantages that the oxygen lance is composed of multiple parts and does not need to be replaced as a whole when partially damaged, and can generate more secondary combustion heat and reduce carbon emissions, thereby solving the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combustion oxygen gun structure, including an oxygen gun body and a sleeve, the oxygen gun body including a first outer tube body and a second outer tube body, the first outer tube body and the second outer tube body are threadedly connected, the first inner tube body is inserted in the first outer tube body, a first positioning plate is installed on the outer surface of the end of the first outer tube body, an oxygen spray head is installed on the end of the second outer tube body, the second inner tube body is inserted in the second outer tube body, a second positioning plate is installed on the outer surface of the second outer tube body, and corresponding positioning grooves are provided at the side ends of the first positioning plate and the side ends of the second positioning plate. The sleeve is installed on the outside of the first outer tube body and the second outer tube body, and the two ends of the sleeve are inserted into the positioning grooves. A secondary oxygen spray pipe connected to the sleeve is installed on the sleeve, and four secondary oxygen spray pipes are arranged in an array, and an electromagnetic valve is provided on the secondary oxygen spray pipe.

[0006] Preferably, an oxygen inlet pipe is installed at the beginning of the oxygen lance body, and the oxygen inlet pipe is communicated with the oxygen lance body.

[0007] Preferably, an outer surface of the end of the second outer tube body is provided with an outer thread, an inner wall of the oxygen spray head is provided with an inner thread, and the oxygen spray head is threadedly connected to the second outer tube body.

[0008] Preferably, a mounting tube is provided at the starting end of the second outer tube body, an outer surface of the mounting tube is provided with an external thread, and an inner wall of the first outer tube body is provided with an internal thread.

[0009] Preferably, the outer surface of the second outer tube body is provided with oxygen outlet holes distributed in an array, and the oxygen outlet holes are connected to the sleeve.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model is composed of multiple parts threaded together, and when local damage occurs, there is no need to replace the entire part, thereby reducing the replacement cost; during use, oxygen can be sprayed out from the secondary oxygen injection pipe, thereby improving the reaction efficiency between the sprayed oxygen and the CO generated by the decarburization reaction, and utilizing the secondary combustion of CO in the furnace gas to release heat and heat the molten metal pool, which will generate more secondary combustion heat. Improving the secondary combustion of CO helps to increase the heat in the furnace, thereby reducing carbon emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model in a front view;

[0012] Figure 2 This is a front view structural schematic diagram of the utility model;

[0013] Figure 3 It is a schematic diagram of the disassembled structure of the utility model from the front view.

[0014] The reference numerals and names in the figures are as follows:

[0015] 1. Oxygen inlet pipe; 2. Oxygen gun body; 3. First outer tube body; 4. First inner tube body; 5. Secondary oxygen injection pipe; 6. Casing; 7. Second outer tube body; 8. Second inner tube body; 9. Oxygen injection head; 10. Second positioning plate; 11. First positioning plate; 12. Mounting pipe; 13. Oxygen outlet hole. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Embodiment 1

[0018] See also Figures 1 to 3, the utility model provides an embodiment: a combustion oxygen gun structure, including an oxygen gun body 2 and a sleeve 6, an oxygen inlet pipe 1 is installed at the starting end of the oxygen gun body 2, the oxygen inlet pipe 1 is connected to the oxygen gun body 2, the oxygen gun body 2 includes a first outer tube body 3 and a second outer tube body 7, the first outer tube body 3 and the second outer tube body 7 are threadedly connected, a mounting tube 12 is provided at the starting end of the second outer tube body 7, the outer surface of the mounting tube 12 is provided with an external thread, the inner wall of the first outer tube body 3 is provided with an internal thread, the first inner tube body 4 is inserted into the first outer tube body 3, a first positioning plate 11 is installed on the outer surface of the end of the first outer tube body 3, an oxygen spray head 9 is installed at the end of the second outer tube body 7, the outer surface of the end of the second outer tube body 7 is provided with an external thread, the inner wall of the oxygen spray head 9 is provided with an internal thread, the oxygen spray head 9 is threadedly connected to the second outer tube body 7, and the second inner tube body 8 is inserted into the second outer tube body 7.

[0019] In this embodiment, during use, oxygen enters the oxygen lance body 2 from the oxygen inlet pipe 1, and can then be sprayed out from the oxygen spray head 9. The arrangement of the first inner tube body 4 and the second inner tube body 8 can protect the inner walls of the first outer tube body 3 and the second outer tube body 7. When local damage occurs, the first outer tube body 3 and the second outer tube body 7 and the oxygen spray head 9 can be disassembled by rotation without the need for overall replacement.

[0020] Embodiment 2

[0021] See also Figures 1 to 3 , the utility model provides an embodiment: a combustion oxygen gun structure, compared with the first embodiment, the present embodiment also includes: the outer surface of the second outer tube body 7 is installed with a second positioning plate 10, the side end of the first positioning plate 11 and the side end of the second positioning plate 10 are provided with corresponding positioning grooves, the sleeve 6 is installed on the outside of the first outer tube body 3 and the second outer tube body 7, and the two ends of the sleeve 6 are inserted into the positioning grooves, the sleeve 6 is installed with a secondary oxygen injection pipe 5 connected to the sleeve 6, the secondary oxygen injection pipe 5 is provided with four array-distributed, and the secondary oxygen injection pipe 5 is provided with an electromagnetic valve, the outer surface of the second outer tube body 7 is provided with oxygen outlet holes 13 distributed in an array, and the oxygen outlet holes 13 are connected to the sleeve 6, the electromagnetic valve in the utility model is a well-known device, and its working principle and circuit connection are well known to those skilled in the art, and they are all conventional means or common knowledge, which will not be repeated here, and those skilled in the art can make any selection according to their needs or convenience.

[0022] In this embodiment, when the oxygen gun is in use, the solenoid valve on the secondary oxygen injection pipe 5 can be opened as needed, and oxygen can enter the sleeve 6 from the oxygen outlet hole 13, and then the oxygen can be sprayed out from the secondary oxygen injection pipe 5. The oxygen sprayed from the secondary oxygen injection pipe 5 can react and burn with the CO generated by the decarburization reaction. The secondary combustion of CO in the furnace gas is used to release heat and heat the molten metal pool, which can effectively increase the heat in the furnace.

[0023] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A combustion oxygen lance structure, comprising an oxygen lance body (2) and a sleeve (6), characterized in that: The oxygen lance body (2) comprises a first outer tube body (3) and a second outer tube body (7), the first outer tube body (3) and the second outer tube body (7) are threadedly connected, the first outer tube body (3) is plugged with a first inner tube body (4), a first positioning plate (11) is installed on the outer surface of the end of the first outer tube body (3), an oxygen spray head (9) is installed on the end of the second outer tube body (7), the second inner tube body (8) is plugged with the second outer tube body (7), and the outer surface of the second outer tube body (7) is A second positioning plate (10) is installed on the surface, and corresponding positioning grooves are opened at the side ends of the first positioning plate (11) and the second positioning plate (10). The sleeve (6) is installed on the outside of the first outer tube body (3) and the second outer tube body (7), and both ends of the sleeve (6) are inserted into the positioning grooves. A secondary oxygen injection pipe (5) connected to the sleeve (6) is installed on the sleeve (6), and the secondary oxygen injection pipe (5) is provided with four arranged in an array, and an electromagnetic valve is provided on the secondary oxygen injection pipe (5).

2. A combustion oxygen lance structure according to claim 1, characterized in that: An oxygen inlet pipe (1) is installed at the beginning of the oxygen lance body (2), and the oxygen inlet pipe (1) is connected to the oxygen lance body (2).

3. A combustion oxygen lance structure according to claim 1, characterized in that: The outer surface of the end of the second outer tube (7) is provided with an external thread, the inner wall of the oxygen spray head (9) is provided with an internal thread, and the oxygen spray head (9) is threadedly connected to the second outer tube (7).

4. A combustion oxygen lance structure according to claim 1, characterized in that: A mounting tube (12) is provided at the starting end of the second outer tube body (7), an outer surface of the mounting tube (12) is provided with an external thread, and an inner wall of the first outer tube body (3) is provided with an internal thread.

5. A combustion oxygen lance structure according to claim 1, characterized in that: The outer surface of the second outer tube body (7) is provided with oxygen outlet holes (13) distributed in an array, and the oxygen outlet holes (13) are in communication with the sleeve (6).

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