Extended tube lance tube

Abstract

The utility model discloses lengthened pipe body oxygen lance pipe belongs to metal hose technical field, this lengthened pipe body oxygen lance pipe includes bellows, the outer wall of bellows is provided with the protection assembly for preventing bellows, and the protection assembly includes the protection layer of setting in the bellows outer wall, and the protection layer includes the micro -groove of setting in every wave crest position of bellows, and the side coupling agent layer of micro -groove, and the fluorine rubber transition layer is adhered outside coupling agent layer, and the main rubber vulcanization layer is adhered to the outer wall of fluorine rubber transition layer. The utility model discloses when the bellows deflection, the wave crest apex of wave band abuts at the adjacent wave band's wave abdomen, so that the impact friction energy is effectively absorbed by the protection layer, and the wave crest apex of bellows is extended to the wave abdomen of two sides with the protection layer as the center and does not exceed 30% of wave crest height, and the thickness of protection layer is gradiently decreased along the wave crest apex to the wave abdomen of two sides, effectively avoids the jam of causing to the wave valley, and influence bellows's maximum deflection angle.

Description

Technical Field

[0001] This utility model belongs to the field of metal hose technology, specifically relating to an extended oxygen lance tube. Background Technology

[0002] The oxygen lance metal hose is an essential component in the production process of a 120t converter. It mainly connects the rigid pipe of the top blowing system and the flange of the lifting trolley, supplying water and gas to the oxygen lance and providing a buffer for the lifting process of the oxygen lance lifting trolley.

[0003] The structure of the oxygen lance metal hose currently in use includes: the oxygen lance hose body, and flanges at both ends of the hose body that connect to the top blowing system and the flange of the oxygen lance lifting trolley.

[0004] The existing oxygen lance metal tubes cannot protect the outer wall of the inner bellows during use, causing the bellows to collide with each other when the metal tube swings, resulting in dry friction between the metals, which affects the service life of the metal tube in the long run. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an extended tube oxygen lance tube.

[0006] The technical solution adopted to solve the above-mentioned technical problems is: to provide an extended tube oxygen lance tube, including a corrugated tube, characterized in that the outer wall of the corrugated tube is provided with a protective component for protecting the corrugated tube, the protective component includes a protective layer provided on the outer wall of the corrugated tube, the protective layer includes microgrooves opened at each crest position of the corrugated tube, a coupling agent layer on the side of the microgrooves, a fluororubber transition layer adhered to the outside of the coupling agent layer, and a main rubber vulcanization layer adhered to the outer wall of the fluororubber transition layer.

[0007] Furthermore, the protective layer extends from the apex of the corrugated pipe to both antinodes and does not exceed 30% of the height of the apex. The thickness of the protective layer gradually decreases from the apex of the apex to both antinodes.

[0008] The above technical solution involves setting a protective layer at the crest of the bellows. The protective layer extends from the apex of the bellows to the antinodes on both sides. When the bellows deflect, the apex of the bellows abuts against the antinodes of the adjacent bellows, effectively absorbing the impact friction energy. This effectively reduces dry friction between the metal sections and lowers torsional collision wear. The protective layer extends from the apex of the bellows to the antinodes on both sides and does not exceed 30% of the bellows height. The thickness of the protective layer gradually decreases from the apex of the bellows to the antinodes on both sides, effectively preventing blockage at the troughs and affecting the maximum deflection angle of the bellows.

[0009] Furthermore, a protective mesh sleeve is movably fitted onto the outer wall of the corrugated pipe, with both ends of the protective mesh sleeve installed at the straight ends of both ends of the corrugated pipe.

[0010] The above technical solution can protect the outer wall of the corrugated pipe by setting a protective mesh sleeve, reducing wear between the corrugated pipe and the outer wall structure and increasing the service life of the device.

[0011] Furthermore, both ends of the protective netting are equipped with sealing hoops, which press and fix the two ends of the protective netting to the straight ends of the corrugated pipe.

[0012] The above technical solution utilizes a detachable installation of the protective netting sleeve with a clamp and the outer wall of the corrugated pipe, facilitating the removal and replacement of the protective netting sleeve.

[0013] Furthermore, the corrugated pipe is provided with an inner metal liner, the two ends of which are welded and fixed to the inner walls of the two straight ends of the corrugated pipe.

[0014] The above technical solution, through the setting of the inner metal tube, allows oxygen to flow along the smooth inner diameter of the inner metal tube, avoiding the reduction of oxygen delivery efficiency by the corrugations of the corrugated tube.

[0015] Furthermore, a gap is left between the inner wall of the corrugated pipe and the outer wall of the inner lining metal pipe, and an aerogel felt is provided in the gap, which is then bonded and fixed to the outer wall of the inner lining metal pipe.

[0016] Through the above technical solution, the heat conduction from the corrugated pipe to the inner metal pipe can be reduced by using aerogel felt, thus inhibiting the high-temperature creep of the inner metal pipe.

[0017] Furthermore, anti-loosening flanges are installed at both ends of the bellows.

[0018] The above technical solution uses an anti-loosening flange to connect the bellows to the oxygen lance structure.

[0019] The beneficial effects of this utility model are as follows:

[0020] By setting a protective layer at the crest of the bellows, when the bellows deflects, the crest of the wave band abuts against the antinode of the adjacent wave band, so that the impact friction energy is effectively absorbed by the protective layer, effectively reducing dry friction between the metal bands and reducing torsional collision wear.

[0021] The protective layer extends from the crest of the corrugated pipe to the antinodes on both sides, with a maximum extension of 30% of the crest height. The thickness of the protective layer gradually decreases from the crest to the antinodes on both sides, effectively preventing blockage at the troughs and affecting the maximum deflection angle of the corrugated pipe.

[0022] Aerogel felt can reduce the heat conduction from the corrugated pipe to the inner metal liner and inhibit the high-temperature creep of the inner metal liner. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the extended tube oxygen lance of this utility model;

[0024] Figure 2 This is a three-dimensional sectional view of the protective mesh sleeve of the extended tube oxygen lance tube of this utility model;

[0025] Figure 3 This is a planar sectional view of the protective mesh sleeve of the extended tube oxygen lance of this utility model;

[0026] Figure 4 for Figure 3 Enlarged view of the local structure of A in the diagram.

[0027] Reference numerals: 1. Corrugated pipe; 2. Microgroove; 201. Coupling agent layer; 202. Fluororubber transition layer; 203. Main rubber vulcanization layer; 3. Protective mesh sleeve; 301. Sealing clamp; 4. Inner metal lining pipe; 401. Aerogel felt; 5. Anti-loosening flange. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this 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 merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] like Figure 1-4 As shown, the extended tube oxygen lance of this embodiment includes a bellows 1 with an overall length of 15m to reduce welding positions. The outer wall of the bellows 1 is provided with a protective assembly for protecting the bellows 1. The protective assembly includes a protective layer on the outer wall of the bellows 1, and the protective layer includes microgrooves 2 formed at each crest position of the bellows 1. A coupling agent layer 201 is located on the side of the microgrooves 2. A fluororubber transition layer 202 is adhered to the outside of the coupling agent layer 201. A main rubber vulcanized layer 203 is adhered to the outer wall of the fluororubber transition layer 202. When the bellows 1 deflects... The crest of the waveband abuts against the antinode of the adjacent waveband, allowing the impact friction energy to be effectively absorbed by the protective layer. At the same time, it also significantly absorbs impact noise, thereby effectively reducing dry friction between the waveband metals and reducing wear from torsional collisions. The protective layer extends from the crest of the bellows 1 to the antinodes on both sides and does not exceed 30% of the crest height. The thickness of the protective layer gradually decreases from the crest to the antinodes on both sides. The maximum thickness of the protective layer is 1 mm, and the thickness should preferably not exceed 0.2 mm to effectively avoid blockage at the troughs and affect the maximum deflection angle of the bellows 1.

[0030] A protective mesh sleeve 3 is movably fitted on the outer wall of the corrugated pipe 1. The protective mesh sleeve 3 is a mesh structure made of cross-woven metal wires. Both ends of the protective mesh sleeve 3 are provided with a sealing clamp 301. The two ends of the protective mesh sleeve 3 are pressed and fixed to the straight ends of the corrugated pipe 1 by the sealing clamp 301. This can protect the outer wall of the corrugated pipe 1, reduce the wear between the corrugated pipe 1 and the outer wall structure, and increase the service life of the device. The sealing clamp 301 facilitates disassembly and replacement when the protective mesh sleeve 3 is worn.

[0031] The bellows 1 has an inner metal tube 4 inside, which is made of thin-walled stainless steel. The two ends of the inner metal tube 4 are welded and fixed to the inner walls of the two straight ends of the bellows 1, so that oxygen can flow along the smooth inner diameter of the inner metal tube 4 during transportation, avoiding the corrugations of the bellows 1 from hindering the oxygen transportation efficiency. A gap is left between the inner wall of the bellows 1 and the outer wall of the inner metal tube 4. An aerogel felt 401 is placed in the gap and is bonded and fixed to the outer wall of the inner metal tube 4. The aerogel felt 401 can reduce the heat conduction of the bellows 1 to the inner metal tube 4 and inhibit the high-temperature creep of the inner metal tube 4. Anti-loosening flanges 5 are installed at both ends of the bellows 1. The anti-loosening flanges 5 are used to connect the bellows 1 to the oxygen lance structure.

[0032] The working principle of this embodiment is as follows: a protective layer is set at the crest of the bellows 1. The protective layer extends from the crest of the bellows 1 to the antinodes on both sides. When the bellows 1 deflects, the crest of one waveband abuts against the antinode of the adjacent waveband, so that the impact friction energy is effectively absorbed by the protective layer, effectively reducing the dry friction between the metals of the wavebands and reducing torsional collision wear. The protective layer extends from the crest of the bellows 1 to the antinodes on both sides and does not exceed 30% of the crest height. The thickness of the protective layer gradually decreases from the crest to the antinodes on both sides, effectively avoiding blockage at the troughs and affecting the maximum deflection angle of the bellows 1. The protective mesh sleeve 3 can protect the outer wall of the bellows 1, reduce wear between the bellows 1 and the outer wall structure, and increase the service life of the device. The protective mesh sleeve 3 is detachably installed on the outer wall of the bellows 1 by the sealing clamp 301, which facilitates the removal and replacement of the protective mesh sleeve 3. The inner metal liner 4 allows oxygen to flow along the smooth inner diameter of the inner metal liner 4, avoiding the corrugations of the bellows 1 from hindering the oxygen delivery efficiency. The aerogel felt 401 can reduce the heat conduction from the bellows 1 to the inner metal liner 4 and inhibit the high-temperature creep of the inner metal liner 4. The anti-loosening flange 5 connects the bellows 1 to the oxygen lance structure.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. An extended tube oxygen lance tube, comprising a corrugated tube (1), characterized in that, The outer wall of the corrugated pipe (1) is provided with a protective component for protecting the corrugated pipe (1). The protective component includes a protective layer provided on the outer wall of the corrugated pipe (1). The protective layer includes microgrooves (2) opened at each crest position of the corrugated pipe (1), a coupling agent layer (201) on the side of the microgrooves (2), a fluororubber transition layer (202) adhered to the outside of the coupling agent layer (201), and a main rubber vulcanization layer (203) adhered to the outer wall of the fluororubber transition layer (202).

2. The extended tube oxygen lance tube according to claim 1, characterized in that, The protective layer extends from the crest of the corrugated pipe (1) to the antinodes on both sides and does not exceed 30% of the crest height. The thickness of the protective layer decreases gradually from the crest to the antinodes on both sides.

3. The elongated tube body lance tube according to claim 2, characterized in that The outer wall of the corrugated pipe (1) is movably fitted with a protective mesh sleeve (3), and the two ends of the protective mesh sleeve (3) are installed with the straight ends of the two ends of the corrugated pipe (1).

4. The elongated tube body lance tube according to claim 3, characterized in that Both ends of the protective netting (3) are provided with hoops (301), and the two ends of the protective netting (3) are pressed and fixed by the hoops (301) to the straight ends of the corrugated pipe (1).

5. The extended tube oxygen lance tube according to claim 4, characterized in that, The corrugated pipe (1) is provided with an inner metal tube (4), and the two ends of the inner metal tube (4) are welded and fixed to the inner walls of the two straight ends of the corrugated pipe (1).

6. The extended tube oxygen lance tube according to claim 5, characterized in that, A gap is left between the inner wall of the corrugated pipe (1) and the outer wall of the inner lining metal pipe (4), and an aerogel felt (401) is provided in the gap. The aerogel felt (401) is bonded and fixed to the outer wall of the inner lining metal pipe (4).

7. The extended tube oxygen lance tube according to claim 6, characterized in that, Both ends of the corrugated pipe (1) are equipped with anti-loosening flanges (5).

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