CN204162742U - RH vacuum degasser circulation tube - Google Patents
RH vacuum degasser circulation tube Download PDFInfo
- Publication number
- CN204162742U CN204162742U CN201420611730.0U CN201420611730U CN204162742U CN 204162742 U CN204162742 U CN 204162742U CN 201420611730 U CN201420611730 U CN 201420611730U CN 204162742 U CN204162742 U CN 204162742U
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- CN
- China
- Prior art keywords
- refractory brick
- tube wall
- vacuum degasser
- circulation tube
- degasser circulation
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model discloses a kind of RH vacuum degasser circulation tube, comprise the tube wall 1 be built into by refractory brick, described tube wall 1 comprises at least two-layer refractory brick in its axial direction, the top alignment of the superiors' refractory brick forms upper orifice 2, the lower alignment of orlop refractory brick forms lower nozzle 3, is characterized in that horizontal brickwork joint 4 that adjacent layers refractory brick contact surface formed is not entirely in same level.Further, described horizontal brickwork joint 4 is engaged the horizontal fissure of displacement structure be arranged in around tube wall 1.Frictional force after the utility model improves between the longitudinal contact surface of adjacent layers refractory brick makes that adjacent layers refractory brick circumferential weld combines more closely, more resistance to molten steel washes away, decrease refractory brick circumferential weld and " above lift " phenomenon, improve the work-ing life of RH vacuum degasser circulation tube.
Description
Technical field
The utility model relates to a kind of RH vacuum degasser, particularly a kind of RH vacuum degasser circulation tube.
Background technology
RH vacuum-treat is the one in numerous external refining methods, it is nineteen fifty-seven by the vacuum circulation degassing purifying method of former West Germany Rule (Ruhrstahl) and extra large Lars (Heraeus) steel mill joint research and development, and the initial of getting two Business Names is called for short.
The vacuum treated main task of RH is degassed, and makes non-metallic inclusion floating, evenly molten steel composition and temperature by molten steel circulation, makes it have the multinomial metallurgical functions such as deoxidation, decarburization, desulfurization, dephosphorization, trimming by material add-on system simultaneously.
In RH vacuum degasser, the vacuum outgas of molten steel has in the vacuum chamber of firebrick lining at a block to carry out.As shown in Figure 1, two circulation tubes 8 made with refractory materials are arranged at the bottom of vacuum chamber 6, and internal vacuum chamber is stretched on the top of circulation tube 8, and the bottom of circulation tube 8 is connected with the tubular stinger 7 that can insert in molten steel.Vacuum chamber 6 forms negative pressure by vacuum pump evacuation, makes molten steel enter vacuum chamber through tubular stinger, circulation tube (being called upcast) successively under the effect of molten steel upper atmosphere pressure.Driving gas is passed into by a tubular stinger wherein, the molten steel in ladle just can be made to increase, pass back into ladle from another root circulation tube (being called downtake), another root tubular stinger and constantly make molten steel produce circulation under gravity after circulation tube, vacuum chamber; In molten steel working cycle, be dissolved in hydrogen in molten steel and nitrogen just from molten steel effusion enter gas phase.
As shown in figs. 2 to 4, tradition RH vacuum degasser circulation tube, for bilayer structure, comprises tube wall 1, upper orifice 2, lower nozzle 3, tube wall 1 circularizes tubular structure by upper and lower two-layer laying fireproof bricks, and the horizontal brickwork joint 4 that levels refractory brick is formed is in same level.
There is following shortcoming in prior art: RH vacuum degasser is double batch production, because the horizontal brickwork joint of adjacent layers refractory brick formation is in same level, refractory brick is through the phenomenon easily occurring that circumferential weld increases of expanding with heat and contract with cold repeatedly, especially in the process that circulates at molten steel of upcast side, because of molten steel scouring force upwards, that circumferential weld can be caused to increase is more obvious, once regional area circumferential weld increases, washing away of molten steel, infiltration can cause the adjacent circumferential weld in same level also to increase thereupon, about use and occur that refractory brick entirety " above lifts " phenomenon for 80 times later, occur in circumferential weld between upper and lower two ring refractory brick that oozing steel even causes circulation tube leakage.
Summary of the invention
The purpose of this utility model is to provide one not easily to occur, and the RH vacuum degasser circulation tube of phenomenon " above lifted " by refractory brick.
For achieving the above object, a kind of RH vacuum degasser circulation tube designed by the utility model, comprise the tube wall 1 be built into by refractory brick, described tube wall 1 comprises at least two-layer refractory brick in its axial direction, the top alignment of the superiors' refractory brick forms upper orifice 2, the lower alignment of orlop refractory brick forms lower nozzle 3, is characterized in that horizontal brickwork joint 4 that adjacent layers refractory brick contact surface formed is not entirely in same level.
Further, described horizontal brickwork joint 4 is engaged the horizontal fissure of displacement structure be arranged in around tube wall 1.
Further, for ease of connecting tubular stinger, described tube wall 1 orlop refractory brick can be arranged the annular recesses 5 for Flange joint.
Especially, described tube wall 1 is made up of double-deck refractory brick, and upper strata refractory brick and lower floor's refractory brick are all unequal or part is unequal along the height on circulation tube tube wall direction.
Especially, described tube wall 1 is circumferentially arranged as the alternating structure of two-layer refractory brick, three layers of refractory brick.
The utility model in actual applications, should according to the number of plies of required circulation tube height and refractory brick size determination refractory brick and concrete arrangement architecture.
The beneficial effects of the utility model are: the frictional force after improving between the longitudinal contact surface of adjacent layers refractory brick significantly increases Interaction between layers power, make that adjacent layers refractory brick circumferential weld combines more closely, more resistance to molten steel washes away, decrease refractory brick and " above lift " phenomenon, improve the work-ing life of RH vacuum degasser circulation tube.
Accompanying drawing explanation
Fig. 1 is the position view of RH vacuum degasser bottom cycle pipe.
Fig. 2 is the diagrammatic cross-section of traditional RH vacuum degasser circulation tube.
Fig. 3 is the schematic top plan view of traditional RH vacuum degasser circulation tube.
Fig. 4 is traditional RH vacuum degasser circulation tube expansion schematic diagram circumferentially.
Fig. 5 is the diagrammatic cross-section improving RH vacuum degasser circulation tube.
Fig. 6 improves RH vacuum degasser circulation tube expansion schematic diagram circumferentially.
Fig. 7 is another kind of improvement RH vacuum degasser circulation tube expansion schematic diagram circumferentially.
Fig. 8 is that the third improves RH vacuum degasser circulation tube expansion schematic diagram circumferentially.
Wherein: tube wall 1, upper orifice 2, lower nozzle 3, horizontal brickwork joint 4, annular recesses 5, vacuum chamber 6, tubular stinger 7, circulation tube 8
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Fig. 5 ~ 6, the utility model RH vacuum degasser circulation tube comprises tube wall 1, upper orifice 2, lower nozzle 3, tube wall 1 orlop refractory brick is provided with the annular recesses 5 for Flange joint, tube wall 1 is made up of double-deck refractory brick, and three kinds of highly different refractory brick is alternately arranged into structure as shown in Figure 6.
Be illustrated in figure 7 double-deck refractory brick make tube wall 1 another kind of arrangement architecture, two kinds of highly different refractory brick is alternately arranged into structure as shown in the figure.
As shown in Figure 7, for two-layer refractory brick, three layers of refractory brick alternately time a kind of structure.
Claims (7)
1. a RH vacuum degasser circulation tube, comprise the tube wall (1) be built into by refractory brick, described tube wall (1) comprises at least two-layer refractory brick in its axial direction, the top alignment of the superiors' refractory brick forms upper orifice (2), the lower alignment of orlop refractory brick forms lower nozzle (3), it is characterized in that: the horizontal brickwork joint (4) that adjacent layers refractory brick contact surface is formed is not entirely in same level.
2. RH vacuum degasser circulation tube according to claim 1, is characterized in that: the horizontal fissure of displacement structure that the occlusion of described horizontal brickwork joint (4) is arranged in around tube wall (1).
3. RH vacuum degasser circulation tube according to claim 1 and 2, is characterized in that: described tube wall (1) orlop refractory brick is provided with the annular recesses (5) being convenient to Flange joint.
4. RH vacuum degasser circulation tube according to claim 1 and 2, it is characterized in that: described tube wall (1) is made up of double-deck refractory brick, upper strata refractory brick and lower floor's refractory brick are all unequal or part is unequal along the height on circulation tube tube wall direction.
5. RH vacuum degasser circulation tube according to claim 3, it is characterized in that: described tube wall (1) is made up of double-deck refractory brick, upper strata refractory brick and lower floor's refractory brick are all unequal or part is unequal along the height on circulation tube tube wall direction.
6. RH vacuum degasser circulation tube according to claim 1 and 2, is characterized in that: described tube wall (1) is circumferentially arranged as the alternating structure of two-layer refractory brick, three layers of refractory brick.
7. RH vacuum degasser circulation tube according to claim 3, is characterized in that: described tube wall (1) is circumferentially arranged as the alternating structure of two-layer refractory brick, three layers of refractory brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420611730.0U CN204162742U (en) | 2014-10-22 | 2014-10-22 | RH vacuum degasser circulation tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420611730.0U CN204162742U (en) | 2014-10-22 | 2014-10-22 | RH vacuum degasser circulation tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204162742U true CN204162742U (en) | 2015-02-18 |
Family
ID=52536451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420611730.0U Expired - Fee Related CN204162742U (en) | 2014-10-22 | 2014-10-22 | RH vacuum degasser circulation tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204162742U (en) |
-
2014
- 2014-10-22 CN CN201420611730.0U patent/CN204162742U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170728 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 15 Wuchang, Wuhan Friendship Avenue, No. 999, block A, layer (Wuhan Iron and steel science and technology innovation department), No. 430080, Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20201022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |