Oxygen lance nozzle structure

Abstract

The utility model provides a kind of oxygen lance nozzle structure, including outer sleeve, intermediate sleeve, inner sleeve, several spouts being provided on the inner sleeve, several installation grooves being opened on the outer wall of the inner sleeve, and sealing element being provided at the installation groove, and temperature insulation assembly for the heat insulation of the sealing element;The utility model is provided by the setting of temperature insulation piece, when the surface temperature of inner sleeve is higher, since temperature insulation piece is contacted with the surface of inner sleeve, and sealing element is contacted with temperature insulation piece, whereby temperature insulation piece can be high temperature and can be blocked, avoid high temperature to cause damage to sealing element, resulting in the existence of gap when inner sleeve is connected with external oxygen passage pipe, cause high-pressure cooling water to flow into furnace, cause security risk;By the setting of temperature insulation cavity, the heat resistance of inner sleeve can be increased, to avoid tempering and burn through inner sleeve or damage sealing element, cause high-pressure cooling water to enter furnace from oxygen passage, further reduce security risk.

Description

Technical Field

[0001] This utility model relates to the technical field of oxygen lances, and in particular to an oxygen lance nozzle structure. Background Technology

[0002] The oxygen lance is one of the important pieces of equipment in converter steelmaking. In converter steelmaking, a supersonic oxygen jet is injected into the furnace through the oxygen lance to create the kinetic and thermodynamic conditions required for converter steelmaking and achieve the metallurgical effects required for converter steelmaking.

[0003] During use, oxygen lances are prone to splashing and burning, and may also cause steel to stick to the lance tube. There is also a risk of oxygen backfire during oxygen supply, which can lead to instantaneous burn-through of the oxygen tube or damage to the seals. This can result in a large amount of high-pressure cooling water entering the furnace through the oxygen channel, posing a safety hazard to personnel and equipment. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide an oxygen lance nozzle structure;

[0005] The present invention provides the following technical solution: an oxygen lance nozzle structure, comprising an outer sleeve, a middle sleeve, an inner sleeve, a plurality of nozzles provided on the inner sleeve, a plurality of mounting grooves opened on the outer wall of the inner sleeve, a sealing element provided at the mounting groove, and a heat insulation component for heat insulation of the sealing element.

[0006] The thermal insulation assembly includes a thermal insulation element disposed in the mounting groove, and a sealing element installed at the thermal insulation element; the thermal insulation assembly also includes a protective element disposed on the inner side of the inner sleeve, and a thermal insulation cavity is formed between the protective element and the inner side of the inner sleeve, the thermal insulation cavity being close to the mounting groove.

[0007] The nozzle's spray chamber passes through the intermediate sleeve and the outer sleeve in sequence and communicates with the outside; the mounting groove, the sealing element, and the thermal insulation element are annular.

[0008] Furthermore, the thermal insulation component includes an upper thermal insulation component, a lower thermal insulation component, and a middle thermal insulation component. The upper thermal insulation component is disposed on the upper wall of the mounting groove, and the lower thermal insulation component is disposed on the lower wall of the mounting groove. One end of the middle thermal insulation component is coupled to the upper thermal insulation component, and the other end is coupled to the lower thermal insulation component. A receiving groove is formed between the lower thermal insulation component and the upper thermal insulation component, and the sealing component is installed in the receiving groove.

[0009] Furthermore, the upper part of the protective component is inclined towards the inner side of the inner sleeve to form a slope, and the end of the slope is in contact with the inner wall of the inner sleeve.

[0010] Furthermore, an insulation plate is provided inside the insulation cavity, and the insulation plate is attached to the inner wall of the inner sleeve.

[0011] Furthermore, an outer water channel is formed between the outer sleeve and the middle sleeve, and an inner water channel is formed between the middle sleeve and the inner sleeve, with the inner water channel communicating with the outer water channel.

[0012] Furthermore, an oxygen passage is formed on the inner side of the inner sleeve, and the oxygen passage is connected to the spray cavity.

[0013] Furthermore, several of the nozzles are distributed around the center of the inner sleeve.

[0014] The beneficial effects of this utility model are as follows: By setting up the heat insulation component, when the surface temperature of the inner sleeve is high, the heat insulation component is in contact with the surface of the inner sleeve, while the sealing component is in contact with the heat insulation component. Thus, the heat insulation component can block the high temperature and prevent the high temperature from damaging the sealing component, which could lead to gaps when the inner sleeve is connected to the external oxygen pipe, causing high-pressure cooling water to flow into the furnace and create a safety hazard. By setting up the heat insulation cavity, the heat resistance of the inner sleeve can be increased, preventing backfire from burning through the inner sleeve or damaging the sealing component, which could cause high-pressure cooling water to enter the furnace through the oxygen channel, further reducing safety hazards. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention.

[0017] Figure 3 This is a three-dimensional structural diagram of the separation of the thermal insulation component and the sealing component of this utility model.

[0018] Figure 4 This is a three-dimensional structural diagram showing the connection between the protective component and the ramp of this utility model.

[0019] Figure 5 This is a three-dimensional structural diagram of the protective component, ramp, insulation cavity, and insulation plate of this utility model.

[0020] The markings in the attached diagram are as follows: 1-outer sleeve, 2-middle sleeve, 3-inner sleeve, 5-spray chamber, 6-outer water passage, 7-inner water passage, 8-nozzle, 9-oxygen passage, 10-installation groove, 11-upper insulation component, 12-lower insulation component, 13-middle insulation component, 14-sealing component, 15-protective component, 16-slope, 17-insulation chamber, 18-insulation plate. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0022] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] An oxygen lance nozzle structure, such as Figures 1-3 As shown, it includes an outer sleeve 1, a middle sleeve 2, an inner sleeve 3, a plurality of nozzles 8 provided on the inner sleeve 3, a plurality of mounting grooves 10 opened on the outer wall of the inner sleeve 3, a sealing element 14 provided at the mounting groove 10, and a heat insulation component for heat insulation of the sealing element 14.

[0025] Among them, such as Figure 2As shown, the outer sleeve 1 is in the shape of a ring and is fixedly connected to the nozzle 8; the middle sleeve 2 is also in the shape of a ring and is fixedly connected to the nozzle 8, and the bottom side of the middle sleeve 2 is provided with a through hole to realize the communication between the inner water channel 7 and the outer water channel 6; the upper part of the inner sleeve 3 is in the shape of a ring, and the lower part is fixedly connected to several nozzles 8. In this embodiment, there are five nozzles 8. The nozzles 8 and the inner sleeve 3 can be integrally formed, and the five nozzles 8 are distributed around the center of the inner sleeve 3; an outer water channel 6 is formed between the outer sleeve 1 and the middle sleeve 2, and an inner water channel 7 is formed between the middle sleeve 2 and the inner sleeve 3. The inner water channel 7 is connected to the outer water channel 6, and high-pressure cooling water is introduced into the outer water channel 6 and flows back from the inner water channel 7 to realize the high-pressure cooling water circulation to cool the nozzle structure. A spray cavity 5 is formed inside the nozzle 8. The spray cavity 5 passes through the intermediate sleeve 2 and the outer sleeve 1 in sequence and communicates with the outside. An oxygen passage 9 is formed inside the inner sleeve 3. The oxygen passage 9 communicates with the spray cavity 5. Oxygen flows into the oxygen passage 9 and is sprayed into the converter from the spray cavity 5. Three mounting slots 10 are provided on the outer wall of the upper part of the inner sleeve 3. In this embodiment, the number of mounting slots 10 can be appropriately increased or decreased. The mounting slots 10 are in the shape of a ring and are used to install the sealing element 14 and the heat insulation element. The three mounting slots 10 are evenly distributed from top to bottom. The sealing element 14 is in the shape of a ring and is installed at the mounting slot 10 to achieve a seal when the inner sleeve 3 is connected to the external oxygen pipe, so as to prevent the high-pressure cooling water in the inner water passage 7 from flowing into the oxygen passage 9 from the connection between the inner sleeve 3 and the external oxygen pipe.

[0026] like Figure 3 As shown, the thermal insulation assembly includes a thermal insulation element disposed in the mounting groove 10, and a sealing element 14 is installed at the thermal insulation element; the thermal insulation assembly also includes a protective element 15 disposed on the inner side of the inner sleeve 3, and a thermal insulation cavity 17 is formed between the protective element 15 and the inner side of the inner sleeve 3, and the thermal insulation cavity 17 is close to the mounting groove 10.

[0027] Specifically, the thermal insulation component is annular and includes an upper thermal insulation component 11, a lower thermal insulation component 12, and a middle thermal insulation component 13. The upper thermal insulation component 11 is attached to the upper wall of the mounting groove 10, the lower thermal insulation component 12 is attached to the lower wall of the mounting groove 10, one end of the middle thermal insulation component 13 is coupled to the upper thermal insulation component 11, and the other end is coupled to the lower thermal insulation component 12. The middle thermal insulation component 13 is attached to the inner wall of the mounting groove 10. The cross-section of the thermal insulation component is U-shaped, thereby forming a receiving groove in the middle. In this embodiment, the thermal insulation component 13 is integral. The heat insulation component is inserted into the mounting groove 10 and the sealing component 14 is inserted into the receiving groove. With the heat insulation component, when the surface temperature of the inner sleeve 3 is high, the heat insulation component is in contact with the surface of the inner sleeve 3, while the sealing component 14 is in contact with the heat insulation component. Thus, the heat insulation component can block the high temperature and prevent the high temperature from damaging the sealing component 14. This would cause a gap when the inner sleeve 3 is connected to the external oxygen pipe, which would cause high-pressure cooling water to flow into the furnace and create a safety hazard.

[0028] like Figure 4 and Figure 5 As shown, the protective component 15 is annular, and the upper part of the protective component 15 slopes towards the inner side of the inner sleeve 3 to form a ramp 16. The end of the ramp 16 is in contact with the inner wall of the inner sleeve 3. The ramp 16 formed at the upper part of the protective component 15 can reduce the impact force of oxygen on the protective component 15, allowing oxygen to flow better into the spray chamber 5. The lower part of the protective component 15 is also a ramp 16. The protective component 15 is welded to the inner side of the inner sleeve 3 through the ramps 16 at both ends, and a heat insulation cavity 17 is formed between the protective component 15 and the inner side of the inner sleeve 3. The heat insulation cavity 17 is located on the back of the mounting groove 10. Thus, the heat resistance of the inner sleeve 3 can be increased by setting the heat insulation cavity 17, avoiding backfire burning through the inner sleeve 3 or damaging the seal 14, which would cause high-pressure cooling water to enter the furnace through the oxygen channel, further reducing safety hazards.

[0029] Furthermore, an insulation plate 18 is provided inside the insulation cavity 17. The insulation plate 18 is annular, and the outer wall of the insulation plate 18 is fixedly connected to the inner wall of the inner sleeve 3. The insulation plate 18 can further increase the heat resistance of the inner sleeve 3 and reduce safety hazards.

[0030] In summary, by setting up the heat insulation component, when the surface temperature of the inner sleeve 3 is high, the heat insulation component is in contact with the surface of the inner sleeve 3, while the sealing component 14 is in contact with the heat insulation component. Thus, the heat insulation component can block the high temperature and prevent the high temperature from damaging the sealing component 14, which would cause a gap when the inner sleeve 3 is connected to the external oxygen pipe, allowing high-pressure cooling water to flow into the furnace and create a safety hazard. By setting up the heat insulation cavity 17, the heat resistance of the inner sleeve 3 can be increased, preventing backfire from burning through the inner sleeve 3 or damaging the sealing component 14, which would allow high-pressure cooling water to enter the furnace through the oxygen channel, further reducing the safety hazard.

[0031] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An oxygen lance nozzle structure, characterized in that, It includes an outer sleeve, a middle sleeve, an inner sleeve, a plurality of nozzles provided on the inner sleeve, a plurality of mounting grooves opened on the outer wall of the inner sleeve, a sealing element provided at the mounting groove, and a heat insulation component for heat insulation of the sealing element. The thermal insulation assembly includes a thermal insulation element disposed in the mounting groove, and a sealing element installed at the thermal insulation element; the thermal insulation assembly also includes a protective element disposed on the inner side of the inner sleeve, and a thermal insulation cavity is formed between the protective element and the inner side of the inner sleeve, the thermal insulation cavity being close to the mounting groove. The nozzle's spray chamber passes through the intermediate sleeve and the outer sleeve in sequence and communicates with the outside; the mounting groove, the sealing element, and the thermal insulation element are annular.

2. The oxygen lance nozzle structure according to claim 1, characterized in that, The thermal insulation component includes an upper thermal insulation component, a lower thermal insulation component, and a middle thermal insulation component. The upper thermal insulation component is disposed on the upper wall of the mounting groove, and the lower thermal insulation component is disposed on the lower wall of the mounting groove. One end of the middle thermal insulation component is coupled to the upper thermal insulation component, and the other end is coupled to the lower thermal insulation component. A receiving groove is formed between the lower thermal insulation component and the upper thermal insulation component, and the sealing component is installed in the receiving groove.

3. The oxygen lance nozzle structure according to claim 1, characterized in that, The upper part of the protective component is inclined towards the inner side of the inner sleeve to form a slope, and the end of the slope is in contact with the inner wall of the inner sleeve.

4. The oxygen lance nozzle structure according to claim 1, characterized in that, An insulation plate is provided inside the insulation cavity, and the insulation plate is attached to the inner wall of the inner sleeve.

5. The oxygen lance nozzle structure according to claim 1, characterized in that, An outer water channel is formed between the outer sleeve and the middle sleeve, and an inner water channel is formed between the middle sleeve and the inner sleeve. The inner water channel is connected to the outer water channel.

6. The oxygen lance nozzle structure according to claim 1, characterized in that, An oxygen passage is formed on the inner side of the inner sleeve, and the oxygen passage is connected to the spray cavity.

7. The oxygen lance nozzle structure according to claim 1, characterized in that, Several of the nozzles are distributed around the center of the inner sleeve.

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