CN205687963U - RH vacuum tank flow-guiding type mass-impregnation pipe and equipment for vacuum refining thereof - Google Patents
RH vacuum tank flow-guiding type mass-impregnation pipe and equipment for vacuum refining thereof Download PDFInfo
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- CN205687963U CN205687963U CN201620606515.0U CN201620606515U CN205687963U CN 205687963 U CN205687963 U CN 205687963U CN 201620606515 U CN201620606515 U CN 201620606515U CN 205687963 U CN205687963 U CN 205687963U
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- pipe
- vacuum tank
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- deflector
- equipment
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Abstract
The utility model discloses a kind of RH vacuum tank flow-guiding type mass-impregnation pipe and equipment for vacuum refining thereof, dip pipe includes being connected as an overall body and deflector, body and deflector inside are steel skeleton, steel skeleton outer wrap insulating refractory serves as a contrast, deflector is positioned at body, and extends downwardly from body.Having multiple lifting gas blowout mouth below the one side of deflector, multiple lifting gas blowout mouth is separately arranged at the body bottom on its opposite.Flow-guiding type mass-impregnation pipe can be under conditions of the size of main body keeping RH equipment for vacuum refining be constant, increase circular flow, and extends the service life of dip pipe, improves the usefulness of RH equipment for vacuum refining.
Description
Technical field
This utility model belongs to the vacuum degasser in metallurgy industry for external refining, is specifically related to one and is applicable to
The RH vacuum tank flow-guiding type mass-impregnation pipe of little ladle circular treatment.
Background technology
Molten steel vacuum circulation degassing (RH) technology is a kind of steel secondary refining technique, is to produce high-quality variety steel indispensability
External refining means.RH vacuum refining device is used primarily for liquid steel degassing, and its metallurgy principle is dependent on pressure reduction and is promoted by molten steel
To vacuum chamber, and make Circulating Flow of Molten Steel by blowing argon gas, utilize vacuum environment to reach the (N that deaerates2、H2、O2) purpose, it is excellent
Point is that response speed is fast, vacuum is high, metallurgical effect is good.
With the increase of process capacity, blowing gas flow, the winding-up mouth degree of depth and vacuum tank vacuum are depended on by circular flow
Bad property weakens accordingly, and the effect of dip pipe internal diameter strengthens.Although numerous research shows that strengthening dip pipe internal diameter is to improve steel
The effective ways of liquid recycle stream amount, but owing to being limited by steel ladle, the RH processing means of the most medium and small tonnage, split type
The internal diameter of dip pipe is without increasing.The utility model patent of application number 201310074271.7 be " RH equipment for vacuum refining
Integral type dip pipe " decrease the dead band of agitation of molten steel, the circular flow of ladle above to 80t level improves 15%～65%,
But it is the most helpless for 40t～60t level ladle RH refining treatment.
The molten steel circular flow of RH directly affects its metallurgical usefulness.Part result of study (equation below) shows, necessarily
In the range of, circular flow Q1 is directly proportional to the square root driving gas to be blown into depth H.
Q1=0.0038kDM 1.5H0.5
Q1=K (H QbD2)0.5
And too short can the generation of bubble pathway length blows through phenomenon, it is unfavorable for circulating.In tedge, gas introduces position reduction
Time bubble pathway length can be made to strengthen, bigger bubble pathway length is conducive to the expansion work of bubble, owing to adding the action time of molten steel
Long, play the driving effect of gas, and then systemic circulation flow fully.So should be carried by the method adding bubble pathway length
The circular flow of high RH equipment for vacuum refining.
Single mouth vacuum tank can carry out application of vacuum in theory to the ladle of all size, and has the bubble row of maximum
Journey.But the ladle bottom blowing stirring either representated by application number 201020626765.3 grade or application number
201310498891.3, the representative dip pipes such as 201510409388.5 all-round to stirring and the application number of blowing
201310129031.2, representative for 201310323725.X etc. ladle bottom blowing+dip pipe monolateral air blowing stirring, all cannot avoid
Rise molten steel in vacuum tank and decline molten steel mixed punching mutually, reduce stirring efficiency.Application number 201520214416.3,
The utility model patent of 201420179382.4, single mouth vacuum tank structure is provided with barricade in dip pipe, but blender gas is from steel
It is blown into bottom bag and is still unavoidable from above-mentioned phenomenon.Further, single mouth vacuum tank is double to the stirring intensity ratio in theory of ladle molten steel
Powerful more 4 times of the vacuum tank of dip pipe, but actually bring the molten steel amount that effectively processes of vacuum chamber into unlike double dip pipe vacuum
Groove is big, and actual processing effect does not comply with one's wishes, so not by selected by vast steel mill.Flow field of molten steel emulation shown in Fig. 1, Fig. 2
Illustrate above-mentioned situation.By to the contrast of double dip pipe RH flow location forms in mouth dip pipe RH Yu Fig. 2 single in Fig. 1, single mouth leaching
The flow velocity of stain pipe RH sinking stock is relatively low, and ladle internal corner region is molten steel flow velocity lower ground side, it is difficult to improve dead band flow velocity,
And the expansion amplitude of single mouth dip pipe RH sinking stock is significantly greater than the expansion amplitude of double dip pipe RH sinking stock, occupies
In flow field, major part space, less to the impact stirring action of ladle bottom, roguing weak effect.Theory and practice is all pointed out, steel
The blender gas that bag bottom blowing goes out is that basically identical angle of diffusing rises, square just becoming of the distance that its area of dispersion rises with bubble
Ratio.Therefore to having the little ladle of longer climb and less area of section, the effect that single gonys is blown is the poorest.
The utility model patent of Patent No. 201220713193.1, single mouth equipment for vacuum refining structure sets in dip pipe
It is equipped with barricade, and inflatable mouth is arranged at bottom dip pipe, rise molten steel in effectively prevent vacuum tank mutual with decline molten steel
Mixed punching, has higher stirring efficiency.But it is shorter that this structure can be generated by bubble pathway length, have impact on metallurgical effect.
Utility model content
In view of above-mentioned deficiency, the purpose of this utility model is to provide a kind of RH vacuum being applicable to little ladle circular treatment
Groove flow-guiding type mass-impregnation pipe, this monoblock type dip pipe can be under conditions of the size not changing existing RH equipment for vacuum refining
Make full use of the wall attachment effect of bubble, increase circular flow, and extend the service life of dip pipe, improve RH equipment for vacuum refining
Usefulness.
For achieving the above object and other relevant purposes, technical solutions of the utility model are as follows:
A kind of RH vacuum tank flow-guiding type mass-impregnation pipe, described dip pipe includes body and is positioned at the water conservancy diversion of body
Plate, body is separated into rising passway and decline passway by described deflector, and described deflector extends downwardly from described body lower end, institute
State deflector to be positioned at the extension of rising passway one side and be provided with multiple lifting gas blowout mouth, form the body bottom of rising passway
Steel import is also additionally provided with multiple lifting gas blowout mouth for one week.
Use said structure, separate dip pipe body by deflector, rise molten steel in making vacuum tank and decline molten steel
Channel separation, it is to avoid molten steel mixes punching and slackens mixing effect.The part stretching out body lower end at deflector is provided with multiple lifting gas
Spout, promotes gas blowout mouth and corresponds to rising passway, be also provided with multiple lifting gas blowout mouth in the body bottom corresponding to rising passway；
And the wall attachment effect utilizing bubble in molten steel reduces and promotes gas nozzle exit area to below dip pipe body, extend molten steel driving gas
Rise and formed, it is possible under conditions of the size of main body keeping RH equipment for vacuum refining adapts to small-sized ladle, increase and rise molten steel
Sectional area and the sectional area declining molten steel, make more molten steel enter the effective district of vacuum refining, and enable decline molten steel to impact
To ladle bottom, the dip pipe body insertion molten steel degree of depth is shallower simultaneously, and the molten steel reduced between dip pipe body and steel ladle stirs
Mix dead band, it is achieved be better than the metallurgical usefulness of single mouth dip pipe vacuum tank.
Further, described deflector connects as one with body.
Further, described dip pipe is internal is metallic framework, and metallic framework outer wrap insulating refractory serves as a contrast, described fire-resistant
Lining is fixed on metallic framework by anchor studs, prevents insulating refractory lining from coming off.Wherein the metallic framework of deflector and body is even
Connecing and be integrated, the insulating refractory lining of deflector and body also connects into entirety.
Further, described deflector is positioned at the one side of rising passway and is provided with multilamellar lifting gas blowout mouth along the vertical direction,
At least one of which is corresponding with the lifting gas blowout mouth of body bottom, and undermost lifting gas blowout mouth is positioned at the extension of deflector
On.
On deflector promote gas blowout mouth at least one layer corresponding with the lifting gas blowout mouth of body bottom, rising can be made logical
Produce suction upwards in road, reach the purpose of fast lifting molten steel.
This utility model provides a kind of equipment for vacuum refining simultaneously, including described RH vacuum tank flow-guiding type mass-impregnation
Pipe.
Further, also include that vacuum tank, hot-bending pipe and water-cooled top gun, described vacuum tank lower end are the uncovered structure of tubulose,
The top of vacuum tank lower end and dip pipe is fixed.
Vacuum tank lower end forms bottomless uncovered structure so that the molten steel entering vacuum tank is thick, participates in vacuum response
Molten steel many.
Further, described dip pipe is welded and fixed with vacuum tank flange in the bottom by metallic framework, or described dip pipe
Top be provided with for the flanged plate fixing with vacuum tank bottom welding.
Further, described vacuum tank top is tightly connected with hot-bending pipe, described hot-bending pipe is provided with top gun and seals logical
Road, water-cooled top gun stretches into vacuum tank top from sealing passage.
The beneficial effects of the utility model are:
1) RH vacuum tank flow-guiding type mass-impregnation pipe of the present utility model is compared with existing dip pipe, and circular flow is not
Increase and be improved significantly in the case of promoting throughput；
2) sectional area owing to rising molten steel sectional area with decline molten steel increases, it is allowed to promoting throughput can effectively increase
Add, and strengthen circular flow further；
3) RH vacuum tank flow-guiding type mass-impregnation pipe of the present utility model rises molten steel sectional area by strengthening and declines steel
The sectional area of liquid so that the molten steel sectional area caused owing to being stained with slag in work process reduces the maintenance caused and the week finally scrapped
Phase extends, and RH vacuum tank flow-guiding type mass-impregnation pipe the most of the present utility model is longer for service life than conventional impregnation pipe；
4) RH vacuum tank flow-guiding type mass-impregnation pipe of the present utility model eliminates the tedge of existing split type dip pipe
And the dead band of molten steel flow between down-comer, improves the efficiency of molten steel mixing；
5) after RH vacuum tank flow-guiding type mass-impregnation pipe of the present utility model is by increasing rising molten steel sectional area, tedge
The maximal rate of exit molten steel reduces, and is conducive to reducing molten steel and splashes height, cold in reducing vacuum tank and in hot-bending pipe
Steel adhesion amount；
6) for same molten steel circular flow requirement, RH vacuum tank flow-guiding type mass-impregnation pipe of the present utility model is permissible
Reduce than existing split type dip pipe and promote throughput, and reduce vacuum pump rate of air sucked in required further；
7) RH vacuum tank flow-guiding type mass-impregnation pipe of the present utility model is more more energy efficient than existing split type dip pipe, it is possible to
Effectively reduce the operating cost of RH equipment for vacuum refining.
Accompanying drawing explanation
Fig. 1 is single mouth dip pipe vacuum tank flow field of molten steel emulation schematic diagram；
Fig. 2 is that split type dip pipe vacuum tank flow field of molten steel emulates schematic diagram；
Fig. 3 is the generalized section of this utility model RH vacuum tank flow-guiding type mass-impregnation pipe and vacuum tank attachment structure；
Fig. 4 is this utility model flow-guiding type mass-impregnation pipe equipment for vacuum refining generalized section.
Piece mark explanation
1 body
2 deflectors
3 steel skeletons
4 refractory linings
5 promote gas blowout mouth
6 flanges
7 vacuum tanks
8 hot-bending pipes
9 water-cooled top guns
10 promote gas blowout mouth
11 ladles
12 promote gas blowout mouth
13 rising passwaies
14 decline passwaies
Detailed description of the invention
Below by way of specific instantiation, embodiment of the present utility model being described, those skilled in the art can be by this theory
Content disclosed by bright book understands other advantages of the present utility model and effect easily.This utility model can also be by additionally
Different detailed description of the invention is carried out or applies, the every details in this specification can also based on different viewpoints with should
With, under without departing from spirit of the present utility model, carry out various modification or change.
Embodiment 1
As it is shown on figure 3, be this utility model RH vacuum tank flow-guiding type mass-impregnation tubular construction schematic diagram.The RH of the present embodiment
The flow-guiding type mass-impregnation pipe of equipment for vacuum refining, including body 1 and deflector 2, it is middle and downward that deflector 2 is positioned at body 1
Stretching out body 1 lower surface, before and after deflector 2, side is connected with body 1, body about 1 is divided into rising passway 13 and declines logical
Road 14, body 1 and deflector 2 all include steel skeleton 3 and refractory lining 4, and it is one that the steel skeleton 3 of body 1 and deflector 2 is welded to connect
Entirety, it is an entirety that refractory lining 4 is coated on outside steel skeleton 3.Wherein deflector 2 has first towards rising passway 13 and court
To second of decline passway 14, this deflector 2 stretches out the part of body 2 lower end and is provided with multiple lifting gas blowout mouth 5, promotes gas blowout
Mouth 5 is positioned at deflector 2 first, 2 first relative body 1 bottoms of deflector is provided with multiple lifting gas blowout mouth 10, carries
Rise gas blowout mouth 5 and all connect with rising passway with promoting gas blowout mouth 10.This example uses steel skeleton, other embodiments can use
Similar metallic framework.
Further, deflector 2 can arrange multilamellar along the vertical direction and promote gas blowout mouth, one layer of lifting gas blowout of bottom
Mouth is positioned on the extension of deflector 2.It is relative with the lifting gas blowout mouth 10 of body 1 bottom that at least one of which promotes gas blowout mouth 12
Should, certainly, multilamellar can also be set along the vertical direction in body 1 bottom and promote gas blowout mouth.
This utility model provides a kind of equipment for vacuum refining simultaneously, including above-mentioned RH vacuum tank flow-guiding type mass-impregnation
Pipe, also includes that vacuum tank 7, vacuum tank 7 lower end are the uncovered structure of tubulose, and dip pipe is welded on bottom vacuum tank 7 by steel skeleton
On housing flange 6, described vacuum tank 7 top seal connects hot-bending pipe 8, described hot-bending pipe 8 is provided with top gun and seals passage,
Water-cooled top gun 9 stretches into vacuum tank 7 top from sealing passage.In other embodiments, the top of dip pipe can be provided for and vacuum
The flanged plate that groove 7 bottom welding is fixing, is connected bottom vacuum tank 7 by flanged plate.
As shown in Figure 4, for the present embodiment equipment for vacuum refining generalized section.Vacuum tank 7 top seal connects hot bending
Pipe 8, water-cooled top gun 9 is inserted at the top of hot-bending pipe 8, in the molten steel in the flow-guiding type mass-impregnation pipe insertion ladle 11 of vacuum tank 7,
When the outlet of hot-bending pipe 8 is outwards bled, vacuum tank 7 is internally formed low pressure, and molten steel is under atmospheric pressure by dipping
The mouth of pipe of pipe enters vacuum chamber, and the gas that respectively lifting gas blowout mouth is blown into is mixed into molten steel and causes the density of this part molten steel to drop
Low, thus be allowed to rise continually, and again drop to ladle 11 after spilling gas in vacuum tank 7, form continuous print steel
Liquid circulates.Enter the molten steel generation metallurgical reaction of vacuum tank 7, it is achieved the metallurgical functions such as degassing, decarburization, mixing composition and temperature.
This utility model can increase rising passway under conditions of the size of main body keeping RH equipment for vacuum refining is constant
With the sectional area of decline passway, and achieve following effect:
1) the present embodiment flow-guiding type mass-impregnation pipe is compared with existing split type dip pipe, and circular flow carries not increasing
It is improved significantly in the case of rising throughput；
2) increase due to the sectional area of rising passway with decline passway, it is allowed to promoting throughput can be effectively increased, and goes forward side by side
One step strengthens circular flow；
3) increase due to the sectional area of rising passway with decline passway so that owing to work process being stained with the molten steel that slag causes
Flow area reduces the maintenance caused and the cycle stretch-out finally scrapped, the therefore water conservancy diversion of the RH equipment for vacuum refining of the present embodiment
Formula mass-impregnation pipe is extended than split type dip pipe service life；
4) the flow-guiding type mass-impregnation pipe of the RH equipment for vacuum refining of the present embodiment eliminates existing split type dip pipe
The dead band of molten steel flow between tedge 1 and down-comer 2, improves the efficiency of molten steel mixing；
5) the flow-guiding type mass-impregnation pipe of the RH equipment for vacuum refining of the present embodiment is by increasing molten steel flow area, rises
The maximal rate of channel exit molten steel reduces, and is conducive to reducing molten steel and splashes highly, in reducing vacuum tank 7 and in hot-bending pipe
Cold steel adhesion amount；
6) for same molten steel circular flow requirement, the flow-guiding type mass-impregnation of the RH equipment for vacuum refining of the present embodiment
Pipe can reduce lifting throughput than existing split type dip pipe, and reduces vacuum pump rate of air sucked in required further；
7) the flow-guiding type mass-impregnation pipe of the RH equipment for vacuum refining of the present embodiment more saves than existing split type dip pipe
Can, it is possible to effectively reduce the operating cost of RH equipment for vacuum refining.
Detailed description of the invention to certain the 60tRH equipment for vacuum refining using the present embodiment flow-guiding type mass-impregnation pipe below
Elaborate.
60t ladle edge diameter about 2060mm.For avoid material resistance to ladle collide ratio stop thermometric sampling liquid level, flow-guiding type
Mass-impregnation pipe largest outside diameter is 1700mm.The dip pipe thickness of resistance to material is set to 350mm, then rising passway sectional area is 0.16m2,
Decline passway sectional area 0.14m2.This channel cross-sectional area alreadys more than 100t split dip pipe RH and can be obtained with maximum molten steel stream
Logical sectional area.Therefore design flow-guiding type mass-impregnation pipe body height 1000mm, deflector height is 1300mm, and deflector promotes
Gas blowout mouth sets two rows, at a distance of 200mm, is positioned at 300mm bottom an array pitch deflector of lower section, and body corresponding position sets 1 row and carries
Rise gas blowout mouth, away from bottom 200mm.Molten steel 300mm～400mm is immersed during the work of flow-guiding type mass-impregnation pipe.Numerical Simulation Results
Show that molten steel circular flow is maximum up to 92t/min.
Above-described embodiment only illustrative principle of the present utility model and effect thereof are new not for limiting this practicality
Type.Above-described embodiment all can be carried out by any person skilled in the art under spirit and the scope of the present utility model
Modify or change.Therefore, art has usually intellectual such as without departing from the essence disclosed in this utility model
All equivalences completed under god and technological thought are modified or change, and must be contained by claim of the present utility model.
Claims (8)
1. a RH vacuum tank flow-guiding type mass-impregnation pipe, described dip pipe includes body and is positioned at the deflector of body,
Body is separated into rising passway and decline passway by described deflector, it is characterised in that: described deflector extends downwardly from described pipe
Body lower end, described deflector is positioned at the extension of rising passway one side and is provided with multiple lifting gas blowout mouth, forms rising passway
The steel import of body bottom is also additionally provided with multiple lifting gas blowout mouth for one week.
RH vacuum tank flow-guiding type mass-impregnation pipe the most according to claim 1, it is characterised in that: described deflector and body
Connect as one.
RH vacuum tank flow-guiding type mass-impregnation pipe the most according to claim 1, it is characterised in that: inside described dip pipe be
Metallic framework, metallic framework outer wrap insulating refractory serves as a contrast, and described refractory lining is fixed on metallic framework by anchor studs.
RH vacuum tank flow-guiding type mass-impregnation pipe the most according to claim 1, it is characterised in that: described deflector is positioned at
The one side rising passage is provided with multilamellar lifting gas blowout mouth, at least one of which and the lifting gas blowout mouth of body bottom along the vertical direction
Corresponding, orlop is positioned on the extension of deflector.
5. an equipment for vacuum refining, it is characterised in that: include the RH vacuum tank flow-guiding type described in claim 1-4 any one
Mass-impregnation pipe.
Equipment for vacuum refining the most according to claim 5, it is characterised in that: also include vacuum tank, hot-bending pipe and water-cooled top
Rifle, described vacuum tank lower end is the uncovered structure of tubulose, and the top of vacuum tank lower end and dip pipe is fixed.
Equipment for vacuum refining the most according to claim 6, it is characterised in that: described dip pipe passes through metallic framework and vacuum
Trench bottom flange welding is fixed, or the top of described dip pipe is provided with for the flanged plate fixing with vacuum tank bottom welding.
Equipment for vacuum refining the most according to claim 6, it is characterised in that: described vacuum tank top seals even with hot-bending pipe
Connecing, described hot-bending pipe is provided with top gun and seals passage, described water-cooled top gun stretches into vacuum tank top from sealing passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620606515.0U CN205687963U (en) | 2016-06-20 | 2016-06-20 | RH vacuum tank flow-guiding type mass-impregnation pipe and equipment for vacuum refining thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620606515.0U CN205687963U (en) | 2016-06-20 | 2016-06-20 | RH vacuum tank flow-guiding type mass-impregnation pipe and equipment for vacuum refining thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205687963U true CN205687963U (en) | 2016-11-16 |
Family
ID=57415250
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620606515.0U Withdrawn - After Issue CN205687963U (en) | 2016-06-20 | 2016-06-20 | RH vacuum tank flow-guiding type mass-impregnation pipe and equipment for vacuum refining thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205687963U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105886703A (en) * | 2016-06-20 | 2016-08-24 | 中冶赛迪工程技术股份有限公司 | RH vacuum channel guide type integrated dipping tube and vacuum refining device with same |
| CN109576447A (en) * | 2018-12-29 | 2019-04-05 | 钢铁研究总院 | A kind of RH purifier and method promoting the decarburization of molten steel depth |
| CN109576447B (en) * | 2018-12-29 | 2024-06-04 | 钢铁研究总院 | RH refining device and method for promoting deep decarburization of molten steel |
-
2016
- 2016-06-20 CN CN201620606515.0U patent/CN205687963U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105886703A (en) * | 2016-06-20 | 2016-08-24 | 中冶赛迪工程技术股份有限公司 | RH vacuum channel guide type integrated dipping tube and vacuum refining device with same |
| CN105886703B (en) * | 2016-06-20 | 2018-10-19 | 中冶赛迪工程技术股份有限公司 | RH vacuum tanks flow-guiding type mass-impregnation pipe and its equipment for vacuum refining |
| CN109576447A (en) * | 2018-12-29 | 2019-04-05 | 钢铁研究总院 | A kind of RH purifier and method promoting the decarburization of molten steel depth |
| CN109576447B (en) * | 2018-12-29 | 2024-06-04 | 钢铁研究总院 | RH refining device and method for promoting deep decarburization of molten steel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161116 Effective date of abandoning: 20181019 |