Oxygen lance mounting structure

Abstract

The utility model provides an oxygen lance mounting structure which comprises an oxygen lance body, a front connecting seat, a rear connecting seat and an oxygen inlet pipe which are sequentially connected from front to back, a spray head is arranged at the front end of the oxygen lance body, a first end disc is arranged at the rear end of the front connecting seat, a second end disc is arranged at the front end of the rear connecting seat, and the first end disc and the second end disc are connected through a connecting piece. An extending seat is arranged on the rear end face of the first end disc, and an elastic locking piece is arranged on the extending seat. According to the oxygen lance installation structure, the oxygen lance body is connected with the front connecting base, the rear connecting base is connected with the oxygen inlet pipe, the first end disc on the front connecting base is connected with the second end disc on the rear connecting base through the connecting piece, and the extending base arranged at the rear end of the first end disc can penetrate through the second end disc and extend to the rear side of the second end disc. The circumferential and axial positions of the first end disc and the second end disc are limited by the elastic locking piece, so that the connecting piece is convenient to mount and arrange, the mounting efficiency of the structure is improved, and the alignment difficulty of the structure is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen lance installation structures, and more specifically, relates to an oxygen lance installation structure. Background Art

[0002] An oxygen lance is a tubular device that blows high-pressure high-purity oxygen into the metal molten pool above the converter at supersonic speed and is equipped with a high-pressure water cooling protection system. It is also called a spray gun and is an important device for oxygen top-blown steelmaking. In the prior art, during the actual use of the converter oxygen lance, it needs to be connected to the flange at the end of the oxygen inlet pipe through multiple bolts. During the replacement of the oxygen lance, the operator needs to always keep the bolt holes between the oxygen lance body and the flange aligned. And during the period when the bolts are not installed, the operator also needs to use external force to keep the oxygen lance in the installation position all the time, otherwise it is easy to reduce the installation efficiency due to the misalignment of the bolt holes during the installation process. During the installation of the oxygen lance, the sealing ring sleeved on the inner insertion pipe of the oxygen lance is prone to slipping, further reducing the convenience of oxygen lance installation, thus bringing inconvenience to the subsequent disassembly, installation and replacement of the oxygen lance. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an oxygen lance installation structure, which can facilitate the replacement and installation of the oxygen lance, help improve the operation efficiency and reduce the positioning difficulty.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: to provide an oxygen lance installation structure, which includes an oxygen lance body, a front connection seat, a rear connection seat and an oxygen inlet pipe connected in sequence from front to back. A nozzle is provided at the front end of the oxygen lance body, a first end plate is provided at the rear end of the front connection seat, a second end plate is provided at the front end of the rear connection seat, the first end plate and the second end plate are connected by a plurality of connecting pieces, a water inlet pipe is connected to the front connection seat, a water outlet pipe is connected to the oxygen lance body, an extension seat penetrating through the second end plate is provided on the rear end face of the first end plate, and an elastic locking member capable of moving radially along the second end plate to contact and limit the rear end face of the second end plate is provided on the extension seat.

[0005] In a possible implementation manner, an installation cavity is provided on the extension seat, and the installation cavity is arranged on the side away from the axis of the first end plate. The elastic locking member includes an elastic member arranged in the installation cavity and a sliding seat connected to the outer end of the elastic member. The elastic member is arranged radially along the first end plate and is used to drive the sliding seat to move towards the outer circumference of the first end plate.

[0006] In a possible implementation manner, the sliding seat includes a sliding block connected to the elastic member and a wedge block connected to the sliding block. The wedge block has a limiting surface capable of contacting the rear end face of the second end plate.

[0007] In some embodiments, a limiting ring plate protruding towards the axial center side of the installation cavity is provided at the opening of the installation cavity, and the limiting ring plate is used to limit the sliding range of the sliding block.

[0008] In a possible implementation manner, the front connecting seat has an extension tube extending into the rear connecting seat, a sealing ring is embedded on the outer peripheral wall of the extension tube, and the outer peripheral wall of the sealing ring abuts against the inner peripheral wall of the rear connecting seat.

[0009] In a possible implementation manner, the outer diameter of the extension tube is smaller than the outer diameter of the front connecting seat, and the outer diameter of the rear connecting seat is larger than the outer diameter of the front connecting seat.

[0010] In a possible implementation manner, a plurality of extension seats and elastic locking members are both provided at intervals along the circumferential direction of the first end plate, and the plurality of extension seats and the plurality of elastic locking members are arranged in one-to-one correspondence.

[0011] In a possible implementation manner, an installation groove extending circumferentially and used for embedding the sealing ring is provided on the outer peripheral wall of the extension tube, a sealing convex ring extending circumferentially is provided on the outer peripheral wall of the sealing ring, and a sealing ring groove engaged with the sealing convex ring is provided on the inner peripheral wall of the rear connecting seat.

[0012] In some embodiments, at least two sealing convex rings are provided at intervals along the axial direction of the sealing ring, and the sealing ring grooves are arranged in one-to-one correspondence with the sealing convex rings.

[0013] In some embodiments, a circumferentially extending annular clamping bar is provided on the bottom wall of the installation groove, and an annular clamping groove engaged with the annular clamping bar is provided on the inner peripheral wall of the sealing ring.

[0014] In the solution shown in the embodiments of the present application, compared with the prior art, for the oxygen lance installation structure provided in the embodiments of the present application, the oxygen lance body is connected to the front connecting seat, the rear connecting seat is connected to the oxygen inlet pipe, the first end plate on the front connecting seat and the second end plate on the rear connecting seat are connected by a connecting member, and the extension seat provided at the rear end of the first end plate can penetrate through the second end plate and extend to the rear side of the second end plate. By means of the elastic locking member, the circumferential and axial positions of the first end plate and the second end plate are limited, thereby facilitating the installation and layout of the connecting member, improving the installation efficiency of the structure, and reducing the alignment difficulty of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1Schematic diagram of the oxygen lance installation structure provided by the embodiment of the present utility model;

[0017] Figure 2 For the embodiment of the present utility model Figure 1 Partial enlarged front view structure diagram;

[0018] Figure 3 For the embodiment of the present utility model Figure 2 Partial enlarged structure diagram of Ⅰ;

[0019] Figure 4 For the embodiment of the present utility model Figure 2 Partial enlarged structure diagram of Ⅱ.

[0020] Among them, each reference numeral in the figure:

[0021] 1. Oxygen lance body; 11. Nozzle; 12. Water inlet pipe; 13. Water outlet pipe; 2. Front connection seat; 21. First end plate; 22. Extension seat; 23. Installation cavity; 24. Limit ring plate; 25. Extension pipe; 26. Installation groove; 27. Annular clamping strip; 3. Rear connection seat; 31. Second end plate; 32. Connecting piece; 33. Sealing ring groove; 4. Oxygen inlet pipe; 5. Elastic locking piece; 51. Elastic piece; 52. Sliding seat; 53. Sliding block; 54. Wedge block; 6. Sealing ring; 61. Sealing convex ring; 62. Annular clamping groove; 63. Internal cavity. Specific implementation manners

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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. Therefore, it should not be construed as a limitation to the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or several of such features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise specifically defined.

[0024] Please refer to Figures 1 to 4 , and now the oxygen lance installation structure provided by the present invention will be described. The oxygen lance installation structure includes an oxygen lance body 1, a front connection seat 2, a rear connection seat 3, and an oxygen inlet pipe 4 that are sequentially connected from front to back. A nozzle 11 is provided at the front end of the oxygen lance body 1. A first end plate 21 is provided at the rear end of the front connection seat 2. A second end plate 31 is provided at the front end of the rear connection seat 3. The first end plate 21 and the second end plate 31 are connected by a plurality of connecting members 32. A water inlet pipe 12 is connected to the front connection seat 2. A water outlet pipe 13 is connected to the oxygen lance body 1. An extension seat 22 is provided on the rear end face of the first end plate 21 and penetrates through the second end plate 31. An elastic locking member 5 is provided on the extension seat 22 and can move radially along the second end plate 31 to contact and limit the rear end face of the second end plate 31.

[0025] Compared with the prior art, for the oxygen lance installation structure provided in this embodiment, the oxygen lance body 1 is connected to the front connection seat 2, the rear connection seat 3 is connected to the oxygen inlet pipe 4, the first end plate 21 on the front connection seat 2 and the second end plate 31 on the rear connection seat 3 are connected by the connecting members 32. The extension seat 22 provided at the rear end of the first end plate 21 can penetrate through the second end plate 31 and extend to the rear side of the second end plate 31. The circumferential and axial positions of the first end plate 21 and the second end plate 31 are limited by means of the elastic locking member 5, thereby facilitating the installation and layout of the connecting members 32, improving the installation efficiency of the structure, and reducing the alignment difficulty of the structure.

[0026] In a possible implementation manner, please refer to Figures 1 to 4, an installation cavity 23 is provided on the extension base 22. The installation cavity 23 is arranged on the side of the extension base 22 away from the axis of the first end plate 21. The elastic locking member 5 includes an elastic member 51 arranged in the installation cavity 23 and a sliding seat 52 connected to the outer end of the elastic member 51. The elastic member 51 is arranged along the radial direction of the first end plate 21 and is used to drive the sliding seat 52 to move towards the outer circumference of the first end plate 21.

[0027] In this embodiment, the installation cavity 23 provided on the extension base 22 is used to arrange the elastic locking member 5 inside. The elastic member 51 of the elastic member 51 is used to push the sliding seat 52, so that the sliding seat 52 can move radially outward along the first end plate 21, and then press against the rear side wall of the second end plate 31 to limit the axial position of the second end plate 31 and the first end plate 21.

[0028] At the same time, after the extension base 22 penetrates through the second end plate 31, it can also limit the circumferential position of the first end plate 21 and the second end plate 31, so that the limiting positions of the two are fixed, which is convenient for passing through a plurality of connecting members 32 and improves the convenience of connection.

[0029] In a possible implementation manner, please refer to Figures 1 to 4 , the sliding seat 52 includes a sliding block 53 connected to the elastic member 51 and a wedge block 54 connected to the sliding block 53. The wedge block 54 has a limiting surface that can contact the rear end face of the second end plate 31. The sliding seat 52 adopts a structure combining a sliding block 53 and a wedge seat. The sliding block 53 is slidably connected in the installation cavity 23 and can move radially along the first end plate 21 of the installation cavity 23, and then drive the upper wedge block 54 to move, so that the limiting surface of the wedge seat can press against the rear end face of the second end plate 31 to form a limiting effect on the axial positions of the first end plate 21 and the second end plate 31.

[0030] In some embodiments, please refer to Figures 1 to 4 , a limiting ring plate 24 protruding towards the axis side of the installation cavity 23 is provided at the opening of the installation cavity 23. The limiting ring plate 24 is used to limit the sliding amplitude of the sliding block 53. The limiting ring plate 24 provided on the opening side of the installation cavity 23 can prevent the sliding block 53 from slipping out of the installation cavity 23 during the movement. The limiting ring plate 24 is located on the opening side of the installation cavity 23 and extends towards the axis side of the installation cavity 23, so that the area of the opening of the installation cavity 23 is smaller than the inner cavity area of the installation cavity 23, effectively limiting the movement amplitude of the sliding block 53 and ensuring that the sliding block 53 is always located inside the installation cavity 23 during movement.

[0031] In a possible implementation manner, please refer to Figures 1 to 4, the front connecting seat 2 has an extension tube 25 extending into the rear connecting seat 3. A sealing ring 6 is fitted on the outer peripheral wall of the extension tube 25, and the outer peripheral wall of the sealing ring 6 abuts against the inner peripheral wall of the rear connecting seat 3. The extension tube 25 can extend into the rear connecting seat 3. By arranging the sealing ring 6 on the outer periphery of the extension tube 25, a pressing effect is formed between the outer peripheral wall of the sealing ring 6 and the inner peripheral wall of the rear connecting seat 3, so as to form a good sealing effect between the front connecting seat 2 and the rear connecting seat 3 and avoid gas leakage.

[0032] In a possible implementation manner, please refer to Figures 1 to 4 , the outer diameter of the extension tube 25 is smaller than that of the front connecting seat 2, and the outer diameter of the rear connecting seat 3 is larger than that of the front connecting seat 2. The extension tube 25 can be conveniently inserted into the rear connecting seat 3, and the rear connecting seat 3 is sleeved on the outer periphery of the extension tube 25 to ensure a reliable connection with the front connecting seat 2.

[0033] In a possible implementation manner, a plurality of extension seats 22 and elastic locking members 5 are arranged at intervals along the circumferential direction of the first end plate 21, and the plurality of extension seats 22 and the plurality of elastic locking members 5 are arranged in one-to-one correspondence. The extension seats 22 and the elastic locking members 5 are respectively provided with a plurality of them, and the two are arranged in one-to-one correspondence and distributed at different circumferential positions on the rear end face of the first end plate 21, which can effectively lock the circumferential position and the axial position of the first end plate 21 and the second end plate 31, facilitating the subsequent reliable connection of the first end plate 21 and the second end plate 31 by using the connecting member 32, improving the positioning accuracy and facilitating the assembly process.

[0034] In a possible implementation manner, please refer to Figures 1 to 4 , an installation groove 26 for fitting the sealing ring 6 and extending circumferentially is provided on the outer peripheral wall of the extension tube 25. A sealing convex ring 61 extending circumferentially is provided on the outer peripheral wall of the sealing ring 6, and a sealing ring groove 33 engaged with the sealing convex ring 61 is provided on the inner peripheral wall of the rear connecting seat 3. The installation groove 26 on the outer peripheral wall of the extension tube 25 is used for fitting the sealing ring 6, and the sealing convex ring 61 provided on the outer peripheral wall of the sealing ring 6 is clamped in the sealing ring groove 33 and abuts against the inner peripheral wall of the sealing ring groove 33 to ensure the sealing effect of the sealing ring 6, so that there is good sealing performance between the front connecting seat 2 and the rear connecting seat 3, avoiding the leakage of air flow and meeting the use function of the oxygen lance.

[0035] In some embodiments, please refer to Figures 1 to 4 , at least two sealing convex rings 61 are arranged at intervals along the axial direction of the sealing ring 6, and the sealing ring grooves 33 are arranged in one-to-one correspondence with the sealing convex rings 61. Two, three or more sealing convex rings 61 are provided, and the plurality of sealing convex rings 61 are arranged at intervals along the axial direction of the sealing ring 6, which can form a plurality of sealing structures at intervals along the axial direction of the extension tube 25 to ensure a good sealing effect.

[0036] On the basis of the above structure, an internal cavity 63 corresponding to the sealing convex ring 61 can be provided in the sealing ring 6. When the sealing convex ring 61 is installed, the internal cavity 63 can form structural deformation, which facilitates the installation operation of the sealing ring 6 and ensures the sealing performance of the sealing ring 6.

[0037] For some examples, see Figures 1 to 4 The bottom wall of the installation groove 26 is provided with a circumferentially extending annular clamping strip 27, and the inner circumferential wall of the sealing ring 6 is provided with an annular clamping groove 62 that is engaged with the annular clamping strip 27. By utilizing the engagement between the annular clamping strip 27 and the annular clamping strip 27, the sealing ring 6 is reliably located in the installation groove 26, and the displacement and escape of the sealing ring 6 are prevented, thereby ensuring the sealing performance between the front connecting seat 2 and the rear connecting seat 3.

[0038] In the above-mentioned oxygen gun installation structure, the first end plate 21 on the front connecting seat 2 is connected to the second end plate 31 on the rear connecting seat 3 through a connecting piece 32. The extension seat 22 arranged at the rear end of the first end plate 21 can penetrate the second end plate 31 and extend to the rear side of the second end plate 31. The circumferential and axial positions of the first end plate 21 and the second end plate 31 are limited by means of the elastic locking piece 5 to prevent the two from being disengaged, thereby facilitating the installation and layout of the connecting piece 32, improving the installation efficiency of the structure, and reducing the difficulty of alignment of the structure.

[0039] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Oxygen lance installation structure, characterized in that: The invention comprises an oxygen gun body (1), a front connecting seat (2), a rear connecting seat (3) and an oxygen inlet pipe (4) which are connected in sequence from front to rear. The front end of the oxygen gun body (1) is provided with a nozzle (11), the rear end of the front connecting seat (2) is provided with a first end plate (21), the front end of the rear connecting seat (3) is provided with a second end plate (31), the first end plate (21) and the second end plate (31) are connected via a plurality of connecting members (32), the front connecting seat (2) is connected with a water inlet pipe (12), the oxygen gun body (1) is connected with a water outlet pipe (13), the rear end surface of the first end plate (21) is provided with an extension seat (22) which passes through the second end plate (31), the extension seat (22) is provided with an elastic locking member (5) which can move along the radial direction of the second end plate (31) to contact and limit the rear end surface of the second end plate (31).

2. The oxygen lance installation structure according to claim 1, characterized in that: The extension seat (22) is provided with a mounting cavity (23), and the mounting cavity (23) is arranged away from the axial side of the first end plate (21). The elastic locking member (5) includes an elastic member (51) arranged in the mounting cavity (23) and a sliding seat (52) connected to the outer end of the elastic member (51). The elastic member (51) is arranged along the radial direction of the first end plate (21) and is used to drive the sliding seat (52) to move toward the outer periphery of the first end plate (21).

3. The oxygen lance installation structure according to claim 2, characterized in that: The sliding seat (52) comprises a sliding block (53) connected to the elastic member (51) and a wedge block (54) connected to the sliding block (53), wherein the wedge block (54) has a limiting surface capable of contacting the rear end surface of the second end plate (31).

4. The oxygen lance installation structure according to claim 3, characterized in that: A limiting ring plate (24) is provided at the opening of the installation cavity (23) and is protruded toward the axial center side of the installation cavity (23). The limiting ring plate (24) is used to limit the sliding amplitude of the sliding block (53).

5. The oxygen lance installation structure according to claim 1, characterized in that: The front connecting seat (2) has an extension tube (25) extending into the rear connecting seat (3), a sealing ring (6) is embedded on the outer peripheral wall of the extension tube (25), and the outer peripheral wall of the sealing ring (6) abuts against the inner peripheral wall of the rear connecting seat (3).

6. The oxygen lance installation structure according to claim 5, characterized in that: The outer diameter of the extension tube (25) is smaller than the outer diameter of the front connecting seat (2), and the outer diameter of the rear connecting seat (3) is larger than the outer diameter of the front connecting seat (2).

7. The oxygen lance installation structure according to claim 6, characterized in that: A plurality of the extension seats (22) and the elastic locking members (5) are arranged at intervals along the circumference of the first end plate (21), and the plurality of the extension seats (22) and the plurality of the elastic locking members (5) are arranged in a one-to-one correspondence.

8. The oxygen lance installation structure according to claim 5, characterized in that: The outer peripheral wall of the extension tube (25) is provided with a mounting groove (26) extending in the circumferential direction and used for embedding the sealing ring (6), the outer peripheral wall of the sealing ring (6) is provided with a sealing convex ring (61) extending in the circumferential direction, and the inner peripheral wall of the rear connecting seat (3) is provided with a sealing ring groove (33) which is snap-fitted with the sealing convex ring (61).

9. The oxygen lance installation structure according to claim 8, characterized in that: At least two sealing convex rings (61) are provided at intervals along the axial direction of the sealing ring (6), and the sealing ring grooves (33) are provided in a one-to-one correspondence with the sealing convex rings (61).

10. The oxygen lance installation structure according to claim 9, characterized in that: A circumferentially extending annular clamping strip (27) is provided on the bottom wall of the installation groove (26), and an annular clamping groove (62) that is clamped and matched with the annular clamping strip (27) is provided on the inner circumferential wall of the sealing ring (6).

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