CN215467954U

CN215467954U - Novel crystallization device for pipe blank continuous casting

Info

Publication number: CN215467954U
Application number: CN202121248916.0U
Authority: CN
Inventors: 陈情
Original assignee: Yunnan Qujing Iron And Steel Group Fenghuang Iron And Steel Co ltd
Current assignee: Yunnan Qujing Iron And Steel Group Fenghuang Iron And Steel Co ltd
Priority date: 2021-06-05
Filing date: 2021-06-05
Publication date: 2022-01-11
Anticipated expiration: 2031-06-05

Abstract

The utility model discloses a novel crystallizing device for continuous casting of a pipe blank, which comprises a top plate, an outer crystallizing part and an inner crystallizing part, wherein the outer crystallizing part sequentially comprises a shell, an outer support cylinder and an outer copper pipe which are concentrically arranged from outside to inside, an outer water cooling cavity is formed between the shell and the outer support cylinder, the inner crystallizing part sequentially comprises a central pipe which is concentrically arranged from inside to outside, an interior section of thick bamboo and interior copper pipe prop, water-cooling chamber in forming between a center tube and the interior section of thick bamboo, all be provided with the chrome plating on the inner wall of outer copper pipe and the outer wall of interior copper pipe, form outer water-cooling passageway between an outer section of thick bamboo of propping and the outer copper pipe outward, water-cooling passageway in forming between an interior copper pipe and the interior section of thick bamboo of propping, be provided with first inlet tube and first outlet pipe on the shell, form the pouring chamber between outer copper pipe and the interior copper pipe, be provided with the immersion tube on the roof, second inlet tube and second outlet pipe, and a housing, the upper end of an outer section of thick bamboo of propping and the interior section of thick bamboo of propping all is connected with the roof through the bolt. The copper pipe is convenient to assemble and disassemble, long in service life, good in water cooling effect and remarkable in economic value and social value.

Description

Novel crystallization device for pipe blank continuous casting

Technical Field

The utility model relates to the technical field of steelmaking equipment, in particular to a novel crystallization device for continuous casting of a pipe blank.

Background

The continuous casting process of the tube blank refers to that high-temperature molten steel is poured into a cavity (pouring cavity) formed by an inner crystallizer and an outer crystallizer on a vertical continuous casting machine, the molten steel is cooled and solidified to form a blank shell with a certain thickness, and then the blank shell is continuously pulled out to form a hollow continuous casting blank, wherein the crystallizer is one of key devices in the continuous casting process of the tube blank, determines the quality of the cast tube blank to a great extent, and plays an important role in the solidification and forming of the molten steel. The prior crystallizer has the following problems in the tube blank continuous casting process: firstly, the copper pipe in the crystallizer is directly contacted and rubbed with high-temperature molten steel, the working environment is extremely severe, the copper pipe is easy to damage, the service life is short, and the copper pipe is inconvenient to operate when needing to be replaced and assembled and disassembled; secondly, the water cooling effect of the crystallizer is not reasonable, and the crystallizer cannot be well adapted to the continuous casting of tube blanks. Therefore, it is objectively needed to develop a novel crystallization device for continuous casting of a tube blank, which has the advantages of convenient assembly and disassembly of a copper tube, long service life and good water cooling effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel crystallization device for continuously casting a tube blank, which has the advantages of convenient assembly and disassembly of a copper tube, long service life and good water cooling effect.

The utility model aims to realize the purpose, which comprises a top plate, an outer crystal part and an inner crystal part, wherein the top plate is positioned above the outer crystal part and the inner crystal part, the outer crystal part sequentially comprises a shell, an outer support cylinder and an outer copper pipe which are concentrically arranged from outside to inside, a ring plate is arranged at the lower end between the shell and the outer copper pipe, the lower ends of the shell and the outer support cylinder are fixedly connected with the ring plate, the lower end of the outer copper pipe is movably connected with the ring plate, an annular outer water cooling cavity is formed among the top plate, the shell, the ring plate and the outer support cylinder, the inner crystal part sequentially comprises a central pipe, an inner support cylinder and an inner copper pipe which are concentrically arranged from inside to outside, the lower end of the inner copper pipe is provided with a circular plate, the lower ends of the central pipe and the inner support cylinder are fixedly connected with the circular plate, the lower end of the inner copper pipe is movably connected with the circular plate, an annular inner water cooling cavity is formed among the top plate, the central pipe, the circular plate and the inner water cooling cavity is formed among the circular plate and the inner copper pipe, the inner wall of the outer copper pipe and the outer plating layer are both provided with chromium, the outer wall of the outer copper pipe and the inner wall of the inner copper pipe are both provided with a first snake-shaped groove, the inner wall of the outer support cylinder and the outer wall of the inner support cylinder are both provided with a second snake-shaped groove, an outer water cooling channel is formed between the second snake-shaped groove on the outer support cylinder and the first snake-shaped groove on the outer copper pipe, an inner water cooling channel is formed between the first snake-shaped groove on the inner copper pipe and the second snake-shaped groove on the inner support cylinder, the shell is provided with a first water inlet pipe and a first water outlet pipe, the end part of the first water inlet pipe sequentially penetrates through the outer water cooling cavity and the outer support cylinder and then is communicated with the upper end of the outer water cooling channel, the lower end of the outer water cooling channel is communicated with the lower part of the outer water cooling cavity, the end part of the first water outlet pipe is communicated with the upper part of the outer water cooling cavity, an annular pouring cavity is formed between the outer copper pipe and the inner copper pipe, the top plate is provided with an immersion pipe, a second water inlet pipe and a second water outlet pipe, the lower end of the immersion pipe extends into the pouring cavity, and the lower end of the second water inlet pipe is communicated with the upper end of the inner water cooling channel, the lower end of the inner water cooling channel is communicated with the lower part of the inner water cooling cavity, the lower end of the second water outlet pipe is communicated with the upper part of the inner water cooling cavity, and the upper ends of the shell, the outer support cylinder and the inner support cylinder are all connected with the top plate through bolts.

Further, spiral guide plates are arranged in the outer water cooling cavity and the inner water cooling cavity.

Further, sealing gaskets are arranged between the top plate and the outer crystallization part and between the top plate and the inner crystallization part.

Further, a vibration device is arranged on the outer side of the shell.

Furthermore, the outer wall of the outer copper pipe and the inner wall of the inner copper pipe are both vertically provided with positioning plates, the positioning plates are positioned between the inlet end and the outlet end of the first snake-shaped groove, and vertical sliding grooves matched with the positioning plates are processed on the inner wall of the outer supporting cylinder and the outer wall of the inner supporting cylinder.

Further, nickel-cobalt alloy coatings are arranged between the inner wall of the outer copper pipe and the chromium coating and between the outer wall of the inner copper pipe and the chromium coating.

When the device runs, molten steel enters the pouring cavity through the dip pipe, meanwhile, a part of cooling water is introduced into the outer crystallization part from the first water inlet pipe and flows out of the first water outlet pipe after sequentially flowing through the outer water cooling channel and the outer water cooling cavity, a part of cooling water flows into the inner crystallization part from the second water inlet pipe and flows out of the second water outlet pipe after sequentially flowing through the inner water cooling channel and the inner water cooling cavity, and the molten steel forms a billet shell under the cooling of the cooling water and is continuously pulled out to form a hollow continuous casting billet, so that a billet is obtained. In the utility model, the outer copper pipe and the inner copper pipe both adopt a hot jacket connecting structure, and when the copper pipe needs to be replaced, the top plate can be drawn out only by being dismantled, so that the copper pipe is convenient to assemble and disassemble; secondly, the inner wall of the outer copper pipe and the outer wall of the inner copper pipe are both provided with chromium coatings, so that the hardness is high, the wear resistance is good, and the service life of the copper pipe can be prolonged; finally, when the utility model is operated, the cooling water is firstly introduced into the outer water cooling channel and the inner water cooling channel, and the temperature of the cooling water is the lowest, so that the heat in the copper pipe can be taken away more quickly, the copper pipe is protected, and meanwhile, the molten steel can be condensed quickly and uniformly to form a blank shell, and the water cooling effect is better. The copper pipe is convenient to assemble and disassemble, long in service life, good in water cooling effect and remarkable in economic value and social value.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view showing the expanded structure of the outer copper pipe 4 according to the present invention;

in the figure: 1-top plate, 2-shell, 3-outer support cylinder, 4-outer copper pipe, 5-annular plate, 6-outer water cooling cavity, 7-central pipe, 8-inner support cylinder, 9-inner copper pipe, 10-circular plate, 11-inner water cooling cavity, 12-chromium coating, 13-first serpentine groove, 14-second serpentine groove, 15-first water inlet pipe, 16-first water outlet pipe, 17-pouring cavity, 18-immersion pipe, 19-second water inlet pipe, 20-second water outlet pipe, 21-spiral guide plate, 22-sealing pad, 23-vibration device, 24-positioning plate, 25-nickel-cobalt alloy coating and 26-pipe blank.

Detailed Description

The present invention is further described with reference to the drawings, but the present invention is not limited thereto in any way, and any modification or improvement based on the present invention is within the protection scope of the present invention.

As shown in figures 1-2, the utility model comprises a top plate 1, an outer crystal part and an inner crystal part, wherein the top plate 1 is positioned above the outer crystal part and the inner crystal part, the outer crystal part sequentially comprises a shell 2, an outer support cylinder 3 and an outer copper pipe 4 which are concentrically arranged from outside to inside, a hot jacket connecting structure is adopted between the outer support cylinder 3 and the outer copper pipe 4, a ring plate 5 is arranged at the lower end between the shell 2 and the outer copper pipe 4, the lower ends of the shell 2 and the outer support cylinder 3 are fixedly connected with the ring plate 5, the lower end of the outer copper pipe 4 is movably connected with the ring plate 5, an annular outer water cooling cavity 6 is formed between the top plate 1, the shell 2, the ring plate 5 and the outer support cylinder 3, the inner crystal part sequentially comprises a central pipe 7, an inner support cylinder 8 and an inner copper pipe 9 which are concentrically arranged from inside to outside, a hot jacket connecting structure is adopted between the inner support cylinder 8 and the inner copper pipe 9, a circular plate 10 is arranged at the lower end of the central pipe 7 and the inner support cylinder 8, the lower end of an inner copper pipe 9 is movably connected with a circular plate 10, an annular inner water cooling cavity 11 is formed among a top plate 1, a central pipe 7, the circular plate 10 and an inner support cylinder 8, chromium coatings 12 are respectively arranged on the inner wall of an outer copper pipe 4 and the outer wall of the inner copper pipe 9, first snake-shaped grooves 13 are respectively processed on the outer wall of the outer copper pipe 4 and the inner wall of the inner copper pipe 9, second snake-shaped grooves 14 are respectively processed on the inner wall of the outer support cylinder 3 and the outer wall of the inner support cylinder 8, an outer water cooling channel is formed between the second snake-shaped groove 14 on the outer support cylinder 3 and the first snake-shaped groove 13 on the outer copper pipe 4, an inner water cooling channel is formed between the first snake-shaped groove 13 on the inner copper pipe 9 and the second snake-shaped groove 14 on the inner support cylinder 8, a first water inlet pipe 15 and a first water outlet pipe 16 are arranged on a shell 2, the end part of the first water inlet pipe 15 sequentially penetrates through the outer water cooling cavity 6 and the outer support cylinder 3 and then is communicated with the upper end of the outer water cooling channel, the lower part of the outer water cooling channel is communicated with the lower part of the outer water cooling cavity 6, the end of the first water outlet pipe 16 is communicated with the upper part of the outer water cooling cavity 6, an annular pouring cavity 17 is formed between the outer copper pipe 4 and the inner copper pipe 9, the top plate 1 is provided with a dip pipe 18, a second water inlet pipe 19 and a second water outlet pipe 20, the lower end of the dip pipe 18 extends into the pouring cavity 17, the lower end of the second water inlet pipe 19 is communicated with the upper end of an inner water cooling channel, the lower end of the inner water cooling channel is communicated with the lower part of the inner water cooling cavity 11, the lower end of the second water outlet pipe 20 is communicated with the upper part of the inner water cooling cavity 11, the shell 2, the outer supporting cylinder 3 and the upper end of the inner supporting cylinder 8 are connected with the top plate 1 through bolts.

When the utility model is operated, molten steel enters a pouring cavity 17 through a dip pipe 18, meanwhile, a part of cooling water is introduced into an outer crystallization part from a first water inlet pipe 15, flows through an outer water cooling channel and an outer water cooling cavity 6 in sequence and flows out from a first water outlet pipe 16, a part of cooling water is introduced into an inner crystallization part from a second water inlet pipe 19, flows out from a second water outlet pipe 20 after flowing through an inner water cooling channel and an inner water cooling cavity 11 in sequence, and the molten steel forms a billet shell under the cooling of the cooling water and is continuously pulled out to form a hollow continuous casting billet, thereby obtaining a billet 26. In the utility model, the outer copper pipe 4 and the inner copper pipe 9 both adopt a hot jacket connection structure, and when the copper pipe needs to be replaced, the top plate 1 can be drawn out only by being dismantled, so that the copper pipe is convenient to assemble and disassemble; secondly, the inner wall of the outer copper pipe 4 and the outer wall of the inner copper pipe 9 are both provided with chromium coatings 12, so that the chromium coatings have high hardness and good wear resistance, and the service life of the copper pipes can be prolonged; finally, when the utility model is operated, the cooling water is firstly introduced into the outer water cooling channel and the inner water cooling channel, and the temperature of the cooling water is the lowest, so that the heat in the copper pipe can be taken away more quickly, the copper pipe is protected, the service life of the copper pipe is prolonged, and meanwhile, the molten steel can be condensed quickly and uniformly to form a blank shell, and the water cooling effect is better.

Spiral guide plates 21 are arranged in the outer water cooling cavity 6 and the inner water cooling cavity 11, cooling water can spirally flow in the corresponding water cooling cavities through spiral guide plates 21, and the cooling efficiency of the cooling water on molten steel can be improved.

In order to prevent the cooling water from leaking, gaskets 22 are provided between the top plate 1 and the outer crystal portion and between the top plate 1 and the inner crystal portion.

The outer side of the shell 2 is provided with a vibration device 23, the vibration device 23 is the existing equipment and generates sinusoidal or non-sinusoidal vibration, and the vibration causes the device to vibrate along with the device when being transmitted to the device, so that the blank shell is prevented from being bonded on a copper pipe and influencing the continuous production of the tube blank 26.

The outer wall of the outer copper pipe 4 and the inner wall of the inner copper pipe 9 are both vertically provided with a positioning plate 24, the positioning plate 24 is positioned between the inlet end and the outlet end of the first snake-shaped groove 13, the inner wall of the outer support cylinder 3 and the outer wall of the inner support cylinder 8 are provided with vertical sliding grooves matched with the positioning plate 24, when the outer copper pipe 4 and the inner copper pipe 9 are installed, the positioning plate 24 is aligned to the vertical sliding grooves, so that the positioning plate 24 is inserted into the vertical sliding grooves, the positioning effect can be achieved, the installation is convenient, meanwhile, the copper pipe can be prevented from rotating in the operation process, and the stability of the utility model is improved.

The nickel-cobalt alloy plating layers 25 are arranged between the inner wall of the outer copper pipe 4 and the chromium plating layer 12 and between the outer wall of the inner copper pipe 9 and the chromium plating layer 12, the nickel-cobalt alloy plating layers 25 have good corrosion resistance, heat erosion resistance and wear resistance, and can play a role of a bonding agent as a transition layer between the copper pipe and the chromium plating layer 12 to improve the wear resistance of the chromium plating layer 12.

Claims

1. A novel crystallization device for continuous casting of pipe billets is characterized in that: comprises a top plate (1), an outer crystallization part and an inner crystallization part, wherein the top plate (1) is positioned above the outer crystallization part and the inner crystallization part, the outer crystallization part sequentially comprises a shell (2) which is concentrically arranged from outside to inside, an outer support cylinder (3) and an outer copper pipe (4), a hot jacket connecting structure is adopted between the outer support cylinder (3) and the outer copper pipe (4), a ring plate (5) is arranged at the lower end between the shell (2) and the outer copper pipe (4), the lower end of the shell (2) and the outer support cylinder (3) is fixedly connected with the ring plate (5), the lower end of the outer copper pipe (4) is movably connected with the ring plate (5), an annular outer water cooling cavity (6) is formed between the top plate (1), the shell (2), the ring plate (5) and the outer support cylinder (3), the inner crystallization part sequentially comprises a central pipe (7), an inner support cylinder (8) and an inner copper pipe (9) which are concentrically arranged from inside to outside, a thermal sleeve connecting structure is adopted between the inner supporting cylinder (8) and the inner copper pipe (9), the lower end of the inner copper pipe (9) is provided with a circular plate (10), the lower ends of the central pipe (7) and the inner supporting cylinder (8) are fixedly connected with the circular plate (10), the lower end of the inner copper pipe (9) is movably connected with the circular plate (10), an annular inner water cooling cavity (11) is formed among the top plate (1), the central pipe (7), the circular plate (10) and the inner supporting cylinder (8), the inner wall of the outer copper pipe (4) and the outer wall of the inner copper pipe (9) are both provided with a chromium coating (12), the outer wall of the outer copper pipe (4) and the inner wall of the inner copper pipe (9) are both provided with a first snake-shaped groove (13), the inner wall of the outer supporting cylinder (3) and the outer wall of the inner supporting cylinder (8) are both provided with a second snake-shaped groove (14), and an outer water cooling channel is formed between the second snake-shaped groove (14) on the outer supporting cylinder (3) and the first snake-shaped groove (13) on the outer copper pipe (4), an inner water cooling channel is formed between a first snake-shaped groove (13) on the inner copper pipe (9) and a second snake-shaped groove (14) on the inner support cylinder (8), a first water inlet pipe (15) and a first water outlet pipe (16) are arranged on the shell (2), the end part of the first water inlet pipe (15) sequentially penetrates through the outer water cooling cavity (6) and the outer support cylinder (3) and then is communicated with the upper end of the outer water cooling channel, the lower end of the outer water cooling channel is communicated with the lower part of the outer water cooling cavity (6), the end part of the first water outlet pipe (16) is communicated with the upper part of the outer water cooling cavity (6), an annular pouring cavity (17) is formed between the outer copper pipe (4) and the inner copper pipe (9), an immersion pipe (18), a second water inlet pipe (19) and a second water outlet pipe (20) are arranged on the top plate (1), the lower end of the immersion pipe (18) extends into the pouring cavity (17), and the lower end of the second water inlet pipe (19) is communicated with the upper end of the inner water cooling channel, the lower end of the inner water cooling channel is communicated with the lower part of the inner water cooling cavity (11), the lower end of the second water outlet pipe (20) is communicated with the upper part of the inner water cooling cavity (11), and the upper ends of the shell (2), the outer support cylinder (3) and the inner support cylinder (8) are all connected with the top plate (1) through bolts.

2. The novel crystallization device for continuous casting of the tube blank is characterized in that spiral guide plates (21) are arranged in the outer water cooling cavity (6) and the inner water cooling cavity (11).

3. The novel crystallization device for continuous casting of the tube blank is characterized in that sealing gaskets (22) are arranged between the top plate (1) and the outer crystallization part and between the top plate (1) and the inner crystallization part.

4. The novel crystallization device for continuous casting of pipe billets as claimed in claim 1, characterized in that a vibration device (23) is arranged outside the housing (2).

5. The novel crystallization device for the continuous casting of the tube blank is characterized in that the outer wall of the outer copper tube (4) and the inner wall of the inner copper tube (9) are both vertically provided with a positioning plate (24), the positioning plate (24) is positioned between the inlet end and the outlet end of the first snake-shaped groove (13), and the inner wall of the outer support cylinder (3) and the outer wall of the inner support cylinder (8) are provided with vertical sliding grooves matched with the positioning plate (24).

6. The novel crystallization device for continuous casting of the tube blank according to claim 1, wherein a nickel-cobalt alloy plating layer (25) is respectively arranged between the inner wall of the outer copper tube (4) and the chromium plating layer (12) and between the outer wall of the inner copper tube (9) and the chromium plating layer (12).