Oxygen lance spray head capable of increasing oxygen conveying amount

Abstract

The utility model relates to the technical field of oxygen lance spray heads, and discloses an oxygen lance spray head capable of improving the oxygen conveying amount. The oxygen lance nozzle capable of increasing the oxygen conveying amount comprises a basic assembly, an expansion assembly is installed at the upper end of the basic assembly, a connecting pipe is installed at the upper end of the expansion assembly, an expansion groove is formed in the connecting pipe, a concentration pipe is installed at the upper end of the connecting pipe, and a first installation groove is formed in the upper end of the concentration pipe; a lifting assembly is installed at the upper end of the expansion assembly, a main end spray head is installed at the upper end of the lifting assembly, a side end spray head is installed at the side end of the main end spray head, a protective cover is installed at the upper end of the side end spray head, and a protective layer is installed on the upper surface of the protective cover. The problems that when the oxygen lance is used, the throat diameter of an internal spray head is small, the follow-up furnace oxygen utilization rate is low, follow-up pig iron cannot be rapidly melted, the internal temperature of a molten pool is uneven, and therefore molten iron consumption is reduced are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen lance nozzles, in particular to an oxygen lance nozzle for improving the oxygen delivery volume. Background Technique

[0002] The oxygen lance nozzle is a device used to blow oxygen into molten steel during the converter steelmaking process. It is designed to increase the oxygen flow rate and change the oxygen flow direction. Its main function is to blow oxygen into the molten steel for functions such as heating up and dephosphorizing. By optimizing the oxygen lance nozzle, expanding the nozzle throat diameter, and improving the utilization rate of the incoming furnace oxygen, an oxygen lance nozzle for improving the oxygen delivery volume is thus proposed.

[0003] The existing Chinese utility model patent with the reference publication number of CN209162111U discloses a new type of converter oxygen lance nozzle, including a nozzle body. Four injection holes are arranged at intervals along the circumference of the nozzle body. The included angle α between the axis of the injection hole and the axis of the nozzle body is 12°. The injection hole includes a throat arranged on the inner side and an outlet arranged on the outer side. The inner diameter of the injection hole gradually increases from the throat to the outlet. The axial distance from the end of the throat to the end of the outlet along the axis of the nozzle body is H1. The ratio of the inner diameter D1 of the throat to H1 is 33:122. The ratio of the inner diameter D1 of the throat to the inner diameter D2 of the outlet is 33:42.9. In this utility model, the designed oxygen flow rate increases, the converter oxygen supply time decreases, the converter production cycle is shortened, and at the same time, the slag melting and molten steel stirring in the converter are both better; only the machining dimensions are changed, and it can be slightly modified on the basis of the existing technology, with low cost.

[0004] Based on the retrieval of the above patent and the combination with the equipment in the existing technology, it is found that when the oxygen lance is in use, the diameter of the nozzle throat inside is small, resulting in a low utilization rate of the incoming furnace oxygen in the subsequent process, causing the subsequent pig iron blocks to not melt quickly, uneven temperature inside the molten pool, thereby reducing the iron water consumption. When the oxygen lance is in use, the traditional oxygen lance has low high-temperature resistance, resulting in the subsequent melting of the oxygen lance nozzle and causing it to be unable to be used in the subsequent process. The existence of these problems affects the use of the device. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the existing technology, the utility model provides an oxygen lance nozzle for improving the oxygen delivery volume, which effectively prevents the problem that when the oxygen lance is in use, the diameter of the nozzle throat inside is small, resulting in a low utilization rate of the incoming furnace oxygen in the subsequent process, causing the subsequent pig iron blocks to not melt quickly, uneven temperature inside the molten pool, thereby reducing the iron water consumption.

[0007] Technical Solution

[0008] To achieve the above object, the present utility model provides the following technical solutions: An oxygen lance nozzle for increasing the oxygen delivery volume, including a basic component, an expansion component for expanding and increasing the original delivery channel is installed at the upper end of the basic component, and a lifting component for increasing the width of the throat inside the nozzle is installed at the upper end of the expansion component.

[0009] A connecting pipe is installed at the upper end of the expansion component, and an expansion slot is installed inside the connecting pipe. A concentrating pipe is installed at the upper end of the connecting pipe, and a first installation slot is installed at the upper end of the concentrating pipe. The first installation slot and the second installation slot facilitate the installation and connection of the upper nozzle.

[0010] A main end nozzle is installed at the upper end of the lifting component. A side end nozzle is installed at the side end of the main end nozzle. A protective cover is installed at the upper end of the side end nozzle, and a spray hole is installed at the upper end of the protective cover. A protective layer is installed on the upper surface of the protective cover, and the protective layer facilitates the protection of the protective cover.

[0011] As a preferred technical solution of the present utility model, an oxygen lance body is installed at the upper end of the basic component, and a connecting ring is installed at the upper end of the oxygen lance body. An interface is installed at the lower end of the connecting ring, and a delivery slot is installed inside the connecting ring. The delivery slot delivers oxygen.

[0012] As a preferred technical solution of the present utility model, a second installation slot is installed at the upper end of the expansion component. The first installation slot and the second installation slot facilitate the installation and connection of the upper nozzle.

[0013] As a preferred technical solution of the present utility model, an installation ring is installed at the upper end of the lifting component. The installation ring facilitates the installation and connection of the upper protective cover.

[0014] As a preferred technical solution of the present utility model, the expansion component is installed at the upper end of the connecting ring in the basic component, and the lifting component is installed at the upper end of the concentrating pipe in the expansion component.

[0015] As a preferred technical solution of the present utility model, the connecting ring and the interface are connected and used, and the cross-sections of the connecting ring and the interface are T-shaped structures. The interface is inserted and installed inside the oxygen lance body.

[0016] As a preferred technical solution of the present utility model, the inside of the expansion slot has a structure that is narrow in the middle and wide on both sides. The first installation slot is installed in the middle of the concentrating pipe, and the number of the second installation slots is four.

[0017] As a preferred technical solution of the present utility model, the installation ring is installed at the upper end of the connecting pipe. The main end nozzle and the side end nozzle have the same structure, and the internal structure of the main end nozzle is a widened structure.

[0018] Compared with the prior art, the oxygen lance nozzle of the present utility model for improving the oxygen delivery amount has the following beneficial effects:

[0019] 1. Through the setting of the expansion component in the present utility model, a connecting pipe is installed in the expansion component, and an expansion slot is installed inside the connecting pipe. By increasing the diameter of the expansion slot, the oxygen delivery efficiency is increased. A nozzle is installed in the lifting component. By installing multiple nozzles at the upper end, the overall usage efficiency is increased. By increasing the throat diameter inside the nozzle, it is convenient for subsequent use. This structure optimizes the oxygen lance nozzle, enlarges the throat diameter of the nozzle, improves the utilization rate of the oxygen entering the furnace, and effectively prevents the throat diameter of the internal nozzle of the oxygen lance from being too small during use, resulting in a low utilization rate of the oxygen entering the furnace subsequently, causing the subsequent pig iron blocks to not melt quickly and the temperature in the molten pool to be uneven, thereby reducing the iron consumption.

[0020] 2. Through the setting of the lifting component in the present utility model, an installation ring is installed in the lifting component. The installation ring installs the upper protective cover at the upper end of the connecting pipe. Spray holes are installed at the upper end of the protective cover. The internal nozzle is protected by the protective cover. A protective layer is installed on the surface of the protective cover. The upper end of the protective layer is a high-temperature resistant coating. The surface of the protective cover is protected by the high-temperature resistant coating. This structure facilitates the protection of the internal nozzle and effectively prevents the low high-temperature resistance of the traditional oxygen lance during the use of the oxygen lance, resulting in the subsequent melting of the oxygen lance nozzle and making it impossible to use subsequently. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 is a schematic diagram of the basic components of the structure of the present utility model;

[0023] Figure 3 is a schematic diagram of the expansion components of the structure of the present utility model;

[0024] Figure 4 is a schematic diagram of the lifting components of the structure of the present utility model.

[0025] Among them: 1. Basic components; 101. Oxygen lance body; 102. Connecting ring; 103. Interface; 104. Delivery groove; 2. Expansion components; 201. Connecting pipe; 202. Expansion slot; 203. Concentrating pipe; 204. First installation slot; 205. Second installation slot; 3. Lifting components; 301. Installation ring; 302. Main end nozzle; 303. Side end nozzle; 304. Protective cover; 305. Spray hole; 306. Protective layer. DETAILED DESCRIPTION OF THE INVENTION

[0026] The following further describes in detail the embodiments of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0027] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Please refer to Figure 1 - Figure 4 , in this embodiment, an oxygen lance nozzle for increasing the oxygen delivery volume includes: a basic component 1, an expansion component 2 is installed at the upper end of the basic component 1, a connecting pipe 201 is installed at the upper end of the expansion component 2, and an expansion slot 202 is installed inside the connecting pipe 201. A concentrator pipe 203 is installed at the upper end of the connecting pipe 201, a first installation slot 204 is installed at the upper end of the concentrator pipe 203, a lifting component 3 is installed at the upper end of the expansion component 2, a main end nozzle 302 is installed at the upper end of the lifting component 3, a side end nozzle 303 is installed at the side end of the main end nozzle 302, a protective cover 304 is installed at the upper end of the side end nozzle 303, and a spray hole 305 is installed at the upper end of the protective cover 304. A protective layer 306 is installed on the upper surface of the protective cover 304. The expansion component 2 is installed at the upper end of the connecting ring 102 in the basic component 1, and the lifting component 3 is installed at the upper end of the concentrator pipe 203 in the expansion component 2.

[0030] Through the above structure; the basic component 1 is convenient for connecting the upper structure and for transporting oxygen, the expansion component 2 is convenient for expanding and increasing the original transport channel, and the lifting component 3 is convenient for increasing the width of the throat inside the nozzle and for protecting the nozzle.

[0031] Please refer to Figure 1 -Figure 4 , at the upper end of the basic component 1, an oxygen lance body 101 is installed, and at the upper end of the oxygen lance body 101, a connecting ring 102 is installed. At the lower end of the connecting ring 102, an interface 103 is installed. Inside the connecting ring 102, a conveying groove 104 is installed. The connecting ring 102 is connected to the interface 103, and the cross-sections of the connecting ring 102 and the interface 103 are T-shaped structures. The interface 103 is inserted and installed inside the oxygen lance body 101.

[0032] Through the above structure: By installing the oxygen lance body 101, it is convenient to install the upper-end structure. The connecting ring 102 installs the upper-end expansion component 2. The interface 103 installs the connecting ring 102 to the upper end of the oxygen lance body 101, and the conveying groove 104 conveys oxygen.

[0033] Please refer to Figure 1 - Figure 4 , at the upper end of the expansion component 2, a second installation groove 205 is installed. The inside of the expansion groove 202 has a structure that is narrow in the middle and wide on both sides. The first installation groove 204 is installed in the middle of the concentrator pipe 203, and the number of the second installation grooves 205 is four.

[0034] Through the above structure: By installing the connecting pipe 201, it is convenient to install the internal expansion groove 202. The expansion groove 202 is convenient for changing the original width, facilitating the subsequent oxygen conveyance. The concentrator pipe 203 concentrates oxygen. The first installation groove 204 and the second installation groove 205 are convenient for installing and connecting the upper-end nozzles.

[0035] Please refer to Figure 1 - Figure 4 , at the upper end of the lifting component 3, a mounting ring 301 is installed. The mounting ring 301 is installed at the upper end of the connecting pipe 201. The main-end nozzle 302 and the side-end nozzle 303 have the same structure, and the internal structure of the main-end nozzle 302 is a widened structure.

[0036] Through the above structure: By installing the mounting ring 301, it is convenient to install and connect the upper-end protective cover 304. The main-end nozzle 302 and the side-end nozzle 303 are convenient for spraying oxygen. The protective cover 304 is convenient for protecting the nozzles. The ejection holes 305 are convenient for exposing the front end of the nozzles subsequently. The protective layer 306 is convenient for protecting the protective cover 304.

[0037] In use, first, oxygen is transported through the oxygen lance body 101. A connecting ring 102 is installed at the upper end of the oxygen lance body 101. The connecting ring 102 is installed and connected to the oxygen lance body 101 through the interface 103 installed at the lower end. When the oxygen lance body 101 transports oxygen, the oxygen is transported through the transport groove 104 inside the connecting ring 102. A connecting pipe 201 is installed at the upper end of the connecting ring 102, and an expansion groove 202 is installed inside the connecting pipe 201. The oxygen is transported from the transport groove 104 to the expansion groove 202. A concentrator pipe 203 is installed at the upper end of the expansion groove 202, and the oxygen is transported to the concentrator pipe 203 through the expansion groove 202. The upper end of the concentrator pipe 203 connects the main nozzle 302 and the side nozzle 303 through the first installation groove 204 and the second installation groove 205. By optimizing the oxygen lance nozzle and enlarging the throat diameter inside the nozzle, the utilization rate of the oxygen entering the furnace is improved. The oxygen inside the concentrator pipe 203 is ejected through the main nozzle 302 and the side nozzle 303. To prevent the nozzle from being damaged, a protective cover 304 is installed at the upper end of the nozzle. The protective cover 304 is installed on the upper end of the nozzle through the installation ring 301. An ejection hole 305 is installed at the upper end of the protective cover 304, and the ejection hole 305 facilitates the nozzle to eject oxygen.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oxygen lance nozzle for improving oxygen delivery, characterized in that: The invention comprises a basic component (1), wherein an expansion component (2) is installed at the upper end of the basic component (1), a connecting pipe (201) is installed at the upper end of the expansion component (2), and an expansion slot (202) is installed inside the connecting pipe (201), a central pipe (203) is installed at the upper end of the connecting pipe (201), and a first installation slot (204) is installed at the upper end of the central pipe (203), a lifting component (3) is installed at the upper end of the expansion component (2), a main end nozzle (302) is installed at the upper end of the lifting component (3), a side end nozzle (303) is installed at the side end of the main end nozzle (302), a protective cover (304) is installed at the upper end of the side end nozzle (303), a spray hole (305) is installed at the upper end of the protective cover (304), and a protective layer (306) is installed on the upper surface of the protective cover (304).

2. The oxygen lance nozzle for improving oxygen delivery according to claim 1, characterized in that: An oxygen lance body (101) is installed at the upper end of the basic assembly (1), and a connecting ring (102) is installed at the upper end of the oxygen lance body (101), a connecting port (103) is installed at the lower end of the connecting ring (102), and a conveying groove (104) is installed inside the connecting ring (102).

3. The oxygen lance nozzle for improving oxygen delivery according to claim 1, characterized in that: A second installation slot (205) is installed at the upper end of the expansion component (2).

4. The oxygen lance nozzle for improving oxygen delivery according to claim 1, characterized in that: A mounting ring (301) is mounted on the upper end of the lifting assembly (3).

5. The oxygen lance nozzle for improving oxygen delivery according to claim 1, characterized in that: The expansion component (2) is installed on the upper end of the connecting ring (102) in the basic component (1), and the lifting component (3) is installed on the upper end of the central pipe (203) in the expansion component (2).

6. The oxygen lance nozzle for improving oxygen delivery according to claim 2, characterized in that: The connecting ring (102) and the connecting port (103) are connected for use, and the cross-sections of the connecting ring (102) and the connecting port (103) are T-shaped structures. The connecting port (103) is inserted and installed inside the oxygen gun body (101).

7. The oxygen lance nozzle for improving oxygen delivery according to claim 3, characterized in that: The interior of the expansion slot (202) is a structure that is narrow in the middle and wide at both sides. The first installation slot (204) is installed in the middle of the central pipe (203), and the number of the second installation slots (205) is four.

8. The oxygen lance nozzle for improving oxygen delivery according to claim 4, characterized in that: The mounting ring (301) is mounted on the upper end of the connecting pipe (201), the main end nozzle (302) and the side end nozzle (303) have the same structure, and the internal structure of the main end nozzle (302) is a widened structure.

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