CN111266564B - Vortex blocking device for limiting generation of ladle vortex and application thereof - Google Patents
Vortex blocking device for limiting generation of ladle vortex and application thereof Download PDFInfo
- Publication number
- CN111266564B CN111266564B CN202010169585.5A CN202010169585A CN111266564B CN 111266564 B CN111266564 B CN 111266564B CN 202010169585 A CN202010169585 A CN 202010169585A CN 111266564 B CN111266564 B CN 111266564B
- Authority
- CN
- China
- Prior art keywords
- vortex
- ladle
- steel
- resisting device
- circle
- Prior art date
- 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.)
- Active
Links
- 230000000903 blocking effect Effects 0.000 title claims abstract description 14
- 230000000670 limiting effect Effects 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 116
- 239000010959 steel Substances 0.000 claims abstract description 116
- 238000010079 rubber tapping Methods 0.000 claims abstract description 43
- 230000035515 penetration Effects 0.000 claims abstract description 7
- 239000011819 refractory material Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 230000001629 suppression Effects 0.000 claims 3
- 230000002829 reductive effect Effects 0.000 abstract description 20
- 239000002893 slag Substances 0.000 abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 239000012530 fluid Substances 0.000 abstract description 8
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 238000009628 steelmaking Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000003111 delayed effect Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000000979 retarding effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- -1 so that on one hand Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses a vortex-resisting device for limiting the generation of a ladle vortex and application thereof, belonging to the technical field of steel ladle tapping of a metallurgical reactor. In view of the problems that the slag entrapment phenomenon is caused by the vortex generated in a metallurgical device at the last stage of ladle pouring in the steel making process, and the residual molten steel in a ladle is wasted by forcibly closing a water gap when the slag entrapment occurs in the prior art, the vortex blocking device provided by the invention is arranged above the water gap with the steel tapping phenomenon in the ladle according to the principles of Coriolis force and hydromechanics, so that the formation of a vortex flow field is limited, and the generation of vortex is inhibited. Meanwhile, the moving direction of the fluid near the outlet is changed, the height of the molten steel generated by vortex is greatly reduced, the time for starting vortex is delayed, the height of the vortex and the penetration height are reduced by 90-100%, the yield of the molten steel is increased, the slag is prevented from being discharged, the tapping quality is improved, and the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of steel ladle tapping of metallurgical reactors, in particular to a vortex-resisting device for limiting the generation of a vortex of a steel ladle and application thereof.
Background
With the development of society and science and technology, the requirements on the quality of steel products are higher and higher. In order to obtain high-quality steel, the inclusion in the steel needs to be controlled, and the content of impurity elements in the steel needs to be reduced. Therefore, the quality of molten steel needs to be strictly controlled in each metallurgical link. In the modern steelmaking process, when molten steel is transferred from one metallurgical reactor to another metallurgical reactor, the generated vortex slag entrapment phenomenon is a problem which is difficult to completely solve for a long time, so that inclusions in the steel are difficult to remove, and the quality of the molten steel is seriously influenced. In the final pouring stage of the molten steel from the steel ladle to the tundish, the steel slag is involved in the molten steel, so that on one hand, steel is left in the steel ladle, and the yield is reduced; on the other hand, the steel slag can enter a long nozzle and a downstream metallurgical reactor, which seriously affects the molten steel of the downstream metallurgical reactor, not only increases the production cost, but also brings complicated work to the cleaning on site.
In order to avoid that a large amount of steel slag enters a downstream metallurgical reactor, manual visual inspection or installation of a slag discharge monitoring device is usually adopted on site, and when the steel slag is about to enter a long water gap, the water gap is forcibly closed. At this time, the molten steel remaining in the ladle cannot be used, thereby generating waste. At the later stage of ladle pouring, Coriolis force is caused by earth rotation, vortex is formed, slag entrapment is caused, namely, when the molten steel is not completely poured, the slag entrapment phenomenon occurs, at the moment, a water gap is forcibly closed, and the molten steel is inevitably remained in the ladle and cannot be utilized. In conclusion, the prior art can not completely inhibit the generation of vortexes, and residual steel still exists after the steel is discharged from a metallurgical device, so that the metal yield is reduced. Therefore, a device which is simple in structure and easy to realize is needed to be designed for effectively inhibiting the generation of vortexes in the metallurgical device at the later tapping stage.
Through retrieval, the Chinese patent application number: ZL200910187709.6, invention name: the patent refers to the field of 'non-positive-displacement machines or engines'. On the 9 th and 29 th of 2009, the application provides a device for hindering the generation and development of fluid vortex, which is characterized in that one or more platforms made of erosion-resistant refractory materials are arranged near a water gap at the bottom of a ladle or a tundish, the cross section of each platform can be rectangular or other polygons, and the generation of vortex can be inhibited; however, the vortex-preventing device disclosed in the application cannot completely inhibit the generation of the vortex, so that the height of the vortex cannot be reduced well, and the slag entrapment phenomenon can be generated continuously.
Disclosure of Invention
1. Technical problem to be solved by the invention
In view of the problems that in the existing steel-making process, a slag entrapment phenomenon is caused due to the fact that a vortex is generated in a metallurgical device at the last stage of ladle pouring, and in the prior art, when slag entrapment occurs, a water gap is forcibly closed, so that residual molten steel exists in a ladle and waste is caused, the invention provides a vortex-resisting device for limiting the generation of a ladle vortex.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention relates to a vortex-resisting device for limiting the generation of a ladle vortex, which is an elliptical hemispherical device, wherein a plurality of openings are formed along the circumferential direction of the device, and molten steel enters a steel outlet at the bottom of a metallurgical vessel through the openings; the vortex-resisting device is arranged above the steel tapping hole and is fixedly connected with the bottom of the ladle.
Furthermore, the material of the swirl resisting device is refractory material, the number of the openings of the swirl resisting device is even, and the swirl resisting device is symmetrically distributed along the circumferential direction of the swirl resisting device.
Furthermore, the inner width of the vortex retarding device is larger than the diameter of the steel tapping hole, and the diameter of the side opening of the vortex retarding device is larger than or equal to the diameter of the steel tapping hole.
Furthermore, the inner circle radius of the vortex-resisting deviceR 0 Calculated from equation (2):
wherein,R 0 in order to prevent the inner circle radius of the swirling device,l 0 the length of the inner circle clear span is long,f 0 is the inner circle vector height.
Furthermore, the axial circle radius of the vortex-resisting deviceRCalculated according to equation (5):
wherein,m 0 is the distance between the center of the axis circle and the center of the inner circle,d 0 the thickness of the vault concrete is adopted; the distance between the center of the axis circle and the center of the inner circlem 0 Calculated according to equation (4):
in the formula, the spring is the spring thicknessd j Thickness of concrete of vaultd 0 The difference between the difference of the two phases,
furthermore, the geometric dimension of the outer circle of the vortex blocking device is calculated according to the formulas (9), (10) and (11);
outer circle span:
the height of the outer circle:
the excircle radius is as follows:
whereinl 1 The clear span width of the excircle arc;l 0 the inner circle has a clear span width;d h is an axis arc auxiliary parameter 1;f 0 is the inner circle rise;f 1 is the outer vector height;d v is an axis arc auxiliary parameter 2;d 0 the thickness of the vault concrete is adopted;R 1 is the radius of the outer circle;d h andd v calculated according to the formulas (6), (7) and (8);
in the formulaφ j Is an auxiliary angle of an axial line arc.
Furthermore, the clear span length of the inner circle of the vortex resisting devicel 0 Diameter of steel tapping holeDIs specifically designed asD≤l 0 ≤1.5D(ii) a The thickness of the vault concreted 0 And arch foot thicknessd j The specific control range is 0.25D≤d 0 ≤2D、0.25D≤d j ≤2D(ii) a The inner circle risef 0 Height of the inner part of the vortex-resisting deviceh 0 Is 0.25D≤f 0 ≤0.75D；0≤h 0 ≤0.5D。
The vortex-resisting device is connected with the bottom of the steel ladle, and the molten steel enters the steel outlet at the bottom of the steel ladle through the vortex-resisting device, so that the purposes of reducing vortex whirl and penetration height of the molten steel are achieved.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:
(1) in view of the problems that the slag entrapment phenomenon is caused by the vortex generated in a metallurgical device at the last stage of ladle pouring and the residual molten steel is wasted in the ladle due to the fact that a water gap is forcibly closed when the slag entrapment occurs in the prior art, the vortex blocking device for limiting the vortex generation of the ladle is arranged at the steel outlet of the metallurgical device, an area for blocking the formation of a flow field is established, the energy for blocking the formation and development of the vortex is formed and the moving direction of fluid near the outlet is changed, the height of the molten steel generated by the vortex is greatly reduced, the time for starting the vortex is prolonged, the rotating and penetrating height is reduced by 90-100%, the yield of the molten steel is increased, the slag falling is prevented, the steel tapping quality is improved, and the production cost is reduced.
(2) The swirl-resisting device has even number of openings around, and disperses the flow fields formed near the steel ladle steel-tapping hole into mirror symmetry, so that the flow fields at two sides of the fluid are mutually influenced and restricted, thereby inhibiting the generation of swirl; the vortex-resisting device is designed to be elliptical and hemispherical, and accords with the structural mechanics design, so that the vortex-resisting device can bear the pressure of molten steel.
(3) The vortex-resisting device is assembled at the bottom of the steel ladle, and can better bear the pressure of molten steel; the structure of the vortex-resisting device is specifically designed according to the structural mechanics, so that the structural strength of the vortex-resisting device is ensured, the use of materials is reduced, and the cost is saved; meanwhile, the vortex-resisting device disclosed by the invention is made of refractory materials, so that the vortex-resisting device can be ensured not to change properties at high temperature, and can work for a long time.
Drawings
FIG. 1 is a schematic view of the direction of nozzle swirl in a ladle reactor in the northern hemisphere;
FIG. 2 is a schematic view of the direction of nozzle swirl with the ladle reactor in the southern hemisphere;
FIG. 3 is a schematic structural view of a vortex-resisting device of the present invention;
FIG. 4 is a cross-sectional view of the vortex breaker of the present invention;
FIG. 5 is a schematic drawing of tapping in a metallurgical reactor;
FIG. 6 is a schematic view of the installation of the vortex-resisting device of the invention in a metallurgical reactor.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
According to the principle of Coriolis force and hydromechanics, the vortex-resisting device made of refractory materials is arranged above the water gap of the steel ladle with the steel tapping phenomenon, so that the formation of a vortex flow field is limited, and the generation of vortex is restrained. The inner width of the vortex-resisting device is larger than the diameter of the steel-tapping hole, and the vortex-resisting device is arranged above the steel-tapping hole. The bottom end of the vortex-resisting device is connected with the bottom of the steel ladle to form a whole, and the molten steel enters a steel tapping hole at the bottom of the metallurgical vessel through the vortex-resisting device.
The following is a detailed description with reference to the embodiments:
example 1
Referring to fig. 3, the vortex-resisting device of the present embodiment is an elliptical hemispherical device, and an even number of openings are formed along the circumferential direction of the device, and the openings are symmetrically distributed along the circumferential direction of the vortex-resisting device. In this embodiment, the number of the openings of the vortex blocking device is four. The even number of the symmetrically distributed openings disperse the flow fields formed near the steel ladle steel tapping hole into mirror symmetry, so that the flow fields on two sides of the fluid are mutually influenced and restricted, and the generation of vortexes is inhibited. The elliptical hemispherical vortex-resisting device conforms to the structural mechanics design, so that the vortex-resisting device can bear the pressure of molten steel. Molten steel enters a steel tapping hole at the bottom of the metallurgical vessel through the opening. The vortex-resisting device is arranged above the steel tapping hole and is fixedly connected with the bottom of the steel ladle, so that the vortex-resisting device can better bear the pressure of molten steel. The inner width of the vortex blocking device is larger than the diameter of the steel tapping hole, and the diameter of the side opening is larger than or equal to the diameter of the steel tapping hole.
It is worth mentioning that, this embodiment specifically limits the size of hindering the whirlpool device, carries out the concrete design to hindering the structure of whirlpool device according to structural mechanics, when guaranteeing to hinder whirlpool device structural strength, has reduced the use of material, has practiced thrift the cost. Meanwhile, the refractory material is used, so that the vortex-resisting device can stably work for a long time in a high-temperature state.
With reference to FIG. 4, the diameter of the steel tapping hole of the ladle isDThe inner circle has a clear spanl 0 The vector height of the inner circle isf 0 The thickness of the vault concrete isd 0 The thickness of the arch foot isd j ，h 0 Is the height in the vortex-resisting device. The clear span length of the inner circlel 0 The diameter of the steel tapping hole is larger than the diameter of the steel tapping hole, the steel tapping hole is spanned above the steel tapping hole, otherwise, steel tapping of molten steel in a steel ladle is hindered, so that the refractory material is seriously scoured in the steel tapping process of the steel ladle, the net span length can be properly increased along with the requirement of the steel tapping amount generally, and the steel tapping hole is specifically formed in the embodimentD≤l 0 ≤1.5D. According to the compressive strength of the refractory materialDefining the tensile strength, and defining the thickness of the arch crown concreted 0 And arch foot thicknessd j The control is within a safety factor range, and the specific control range in the embodiment is 0.25D≤d 0 ≤2D、0.25D≤d j ≤2D. The inner circle risef 0 Height of the inner part of the vortex-resisting deviceh 0 Is a scale factor for regulating the size of the steel tapping amount, and is specifically 0.25 in the embodimentD≤f 0 ≤0.75D、0≤h 0 ≤0.5D。
Clear span length of the inner circlel 0 Rise of inner circlef 0 And height in the vortex-resisting deviceh 0 The three are factors for adjusting the steel tapping quantity. Wherein the inner height of the vortex-resisting deviceh 0 In order to control the leading factor of the steel tapping amount, the steel tapping amount can be properly changed according to the longitude and latitude of the position where the earth is located and the steel tapping amount requirement of the steel ladle of the corresponding steel mill in unit time. Such as: the closer to the equator, the greater the Coriolis force influence, and the appropriate reduction of the internal height of the vortex deviceh 0 。
The specific parameter calculation formula of the vortex blocking device of the embodiment is as follows:
radius of inner circleR 0 Calculating according to equation (2):
wherein,R 0 in order to prevent the inner circle radius of the swirling device,l 0 the length of the inner circle clear span is long,f 0 is the inner circle vector height.
Spring leg thicknessd j Thickness of concrete of vaultd 0 The difference between the difference of the two phases,
the radius of the outer circleRThe derivation of (2) requires the concept of deriving an axis circle to assist the derivation. The distance between the central axis circle and the inner circlem 0 Comprises the following steps:
axial circle radius of the vortex-resisting deviceRCalculated according to equation (5):
meanwhile, the calculation is carried out according to the formulas (6), (7) and (8)d h (axial arc auxiliary parameter 1) andd v (axis arc auxiliary parameter 2):
in the formulaφ j Is an auxiliary angle of an axial line arc.
The geometric dimension of the excircle of the vortex-resisting device in the embodiment is calculated according to the formulas (9), (10) and (11);
outer circle span:
the height of the outer circle:
the excircle radius is as follows:
whereinl 1 The clear span width of the excircle arc;l 0 the inner circle has a clear span width;d h is an axis arc auxiliary parameter 1;f 0 is the inner circle rise;f 1 is the outer vector height;d v is an axis arc auxiliary parameter 2;d 0 the thickness of the vault concrete is adopted;R 1 is the outer radius.
Because the earth rotates to generate centrifugal force, the Coriolis force is different in magnitude and direction according to different geographic positions, the vortex strength and direction generated by the fluid are also different, the strength and direction are shown as that the northern hemisphere is in the anticlockwise direction, the southern hemisphere vortex is in the clockwise direction (see the figure 1 and the figure 2), and the Coriolis force applied to the area closer to the equator is larger. The intensity of the Coriolis force is different according to different geographic positions, and the size of the vortex blocking device can be adjusted according to the requirement. When the northern hemisphere is arranged, the rotating direction of molten steel in the metallurgical reactor is shown in figure 5, and the vortex preventing device is built above the water gap and is fixedly connected with the bottom of the ladle as shown in figure 6. The flow trend of fluid near the water gap is in an anticlockwise trend, the vortex-resisting device can generate a blocking effect on the trend of the fluid, the formation of vortex is completely inhibited, the spinning and penetrating height is reduced by 90-100%, and the residual steel amount is reduced by more than 40% compared with that of the vortex-resisting device.
Example 2
The vortex-resisting device of the embodiment establishes a 1:1 physical model in a laboratory physical simulation experiment, a vortex-resisting device test is installed at the bottom of a ladle, the vortex-resisting device is realized by 3D printing, the vortex critical height at the last stage of steel ladle tapping is controlled, and therefore the purposes of reducing the vortex start-up and penetration height of molten steel are achieved, and the specific steps are as follows:
(1) and (3) designing specific parameters of a vortex resisting device: diameter of water gapDIs 70 mm, wherein the inner circle has a clear spanl 0 Is 70 mm; rise of inner circlef 0 Is 35 mm; thickness of vault concreted 0 Is 30 mm, and the thickness of the arch footd j Is 60 mm. Radius of inner circleR 0 35 mm, and the difference between the thickness of the arch springing section and the thickness of the arch crown section is 30 mm; the outer circle clear span is 173.3846 mm; the height of the outer circle is 34.5385 mm; radius of the outer circleR 1 125.0690 mm, the vortex-resisting device is arranged above the steel tapping hole of the ladle.
(2) And (3) replacing molten steel with water, adding the water to the height of the liquid level of the specified molten steel, standing for 4 min, opening a water gap, recording the swirling height and the penetration height of the steel ladle by using a high-speed camera, and repeating the experiment for multiple times.
(3) The experimental result is good, the swirling height is reduced by 90 percent compared with the non-resistance swirling device, and the penetration height is reduced by 95 percent.
Example 3
The vortex blocking device of the embodiment is installed at the bottom of a steel ladle of Shanghai Meishan steel-making, controls the vortex critical height at the last stage of steel ladle tapping, realizes the purposes of reducing the vortex start-up and penetration height of molten steel, and comprises the following concrete steps:
(1) and (3) designing specific parameters of a vortex resisting device: the diameter D of the water gap is 70 mm, and the inner circle clear span l0Is 70 mm; rise f of inner circle0Is 35 mm; thickness d of concrete of vault030 mm, arch foot thickness djIs 60 mm. Inner circle radius R035 mm, and the difference between the thickness of the arch springing section and the thickness of the arch crown section is 30 mm; the outer circle clear span is 173.3846 mm; the height of the outer circle is 34.5385 mm; the outer circle radius R1 is 125.0690 mm.
(2) The test result shows that the steel ladle residual steel is obviously reduced. The average value of the residual steel amount of the steel poured by the steel ladles of the steel plant in 2019 and 4 months in 2018 is reduced by 735.02 tons, and the average residual steel amount is reduced by 1.6 tons per heat of the test steel ladles. Compared with the average steel surplus of the ladle in 2018 of 3.36 tons/heat, the steel surplus of the test heat is reduced by 47.6%, and the benefit is obvious.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.
Claims (5)
1. A vortex-resisting device for limiting the generation of a ladle vortex is characterized in that: the vortex resisting device is an elliptic hemispherical device, a plurality of openings are arranged along the circumferential direction of the device, and molten steel enters a steel tapping hole at the bottom of the metallurgical vessel through the openings; the vortex-resisting device is arranged above the steel tapping hole and is fixedly connected with the bottom of the steel ladle; the material of the vortex-resisting device is refractory material, the number of openings of the vortex-resisting device is even, and the openings are symmetrically distributed along the circumferential direction of the vortex-resisting device; the inner width of the vortex resisting device is larger than the diameter of the steel tapping hole, and the diameter of the side opening of the vortex resisting device is larger than or equal to the diameter of the steel tapping hole; inner circle clear span width of vortex-resisting devicel 0 Diameter of steel tapping holeDIs specifically designed asD≤l 0 ≤1.5D(ii) a Thickness of vault concreted 0 And arch foot thicknessd j The specific control range is 0.25D≤d 0 ≤2D、0.25D≤d j ≤2D(ii) a Rise of inner circlef 0 Height of the inner part of the vortex-resisting deviceh 0 Is 0.25D≤f 0 ≤0.75D；0≤h 0 ≤0.5D。
2. A vortex suppression device for limiting the generation of ladle vortex as claimed in claim 1 wherein: the inner circle radius of the vortex-resisting deviceR 0 Calculated from equation (2):
wherein,R 0 in order to prevent the inner circle radius of the swirling device,l 0 the length of the inner circle clear span is long,f 0 is the inner circle vector height.
3. A vortex suppression device for limiting the generation of ladle vortex as claimed in claim 2, wherein: axial circle radius of the vortex-resisting deviceRCalculated according to equation (5):
wherein,m 0 is the distance between the center of the axis circle and the center of the inner circle,d 0 the thickness of the vault concrete is adopted; the distance between the center of the axis circle and the center of the inner circlem 0 Calculated according to equation (4):
in the formula, the spring is the spring thicknessd j Thickness of concrete of vaultd 0 The difference between the difference of the two phases,
4. a vortex suppression device for limiting the generation of ladle vortex as claimed in claim 3, wherein: the excircle geometric dimension of the vortex blocking device is calculated according to the formulas (9), (10) and (11):
outer circle span:
the height of the outer circle:
the excircle radius is as follows:
whereinl 1 Is the span of the outer circle;l 0 the inner circle has a clear span width;d h is an axis arc auxiliary parameter 1;f 0 is the inner circle rise;f 1 is the outer vector height;d v is an axis arc auxiliary parameter 2;d 0 the thickness of the vault concrete is adopted;R 1 is the radius of the outer circle;d h andd v calculated according to the formulas (6), (7) and (8);
in the formulaφ j Is an auxiliary angle of an axial line arc.
5. Use of a vortex breaker device for limiting the generation of ladle vortices, characterized in that: the vortex-resisting device as claimed in any one of claims 1 to 4 is connected with the bottom of the ladle, and the molten steel enters a steel outlet at the bottom of the ladle through the vortex-resisting device, so that the purposes of reducing vortex swirling and penetration height of the molten steel are achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010169585.5A CN111266564B (en) | 2020-03-12 | 2020-03-12 | Vortex blocking device for limiting generation of ladle vortex and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010169585.5A CN111266564B (en) | 2020-03-12 | 2020-03-12 | Vortex blocking device for limiting generation of ladle vortex and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111266564A CN111266564A (en) | 2020-06-12 |
| CN111266564B true CN111266564B (en) | 2022-04-05 |
Family
ID=70992375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010169585.5A Active CN111266564B (en) | 2020-03-12 | 2020-03-12 | Vortex blocking device for limiting generation of ladle vortex and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111266564B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112207268B (en) * | 2020-10-21 | 2021-08-31 | 武汉钢铁有限公司 | Circular vortex-resisting device for bottom of steel ladle |
| CN113042721B (en) * | 2021-03-15 | 2022-03-25 | 武汉钢铁有限公司 | Dam-shaped vortex-resisting device for bottom of ladle |
| CN114951562B (en) * | 2022-06-23 | 2023-10-24 | 安徽工业大学 | Device and method for restraining confluence vortex through rotation |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5382003A (en) * | 1992-12-08 | 1995-01-17 | Sankaranarayanan; Ramani | Flow control device for the suppression of vortices |
| CN1254335C (en) * | 2001-03-27 | 2006-05-03 | Rhi股份有限公司 | Device for preventing a vortex effect in the discharge area of a metallurgical melting vessel |
| KR20090063784A (en) * | 2007-12-14 | 2009-06-18 | 주식회사 포스코 | Preventing apparatus for turndish choking |
| CN102554207A (en) * | 2012-01-17 | 2012-07-11 | 中冶南方工程技术有限公司 | Sliding water gap device capable of preventing vortex |
| CN102632228A (en) * | 2012-04-27 | 2012-08-15 | 宜兴市龙宸炉料有限公司 | Tundish of slag baffling device containing liquid outlet |
| CN202845766U (en) * | 2012-10-31 | 2013-04-03 | 昆明理工大学 | Plug rod type molten steel ladle for cast steel pouring |
| CN202845774U (en) * | 2012-10-31 | 2013-04-03 | 昆明理工大学 | Sliding nozzle type molten steel ladle for cast steel pouring |
| CN209110170U (en) * | 2018-12-03 | 2019-07-16 | 常州信息职业技术学院 | A kind of ladle |
-
2020
- 2020-03-12 CN CN202010169585.5A patent/CN111266564B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5382003A (en) * | 1992-12-08 | 1995-01-17 | Sankaranarayanan; Ramani | Flow control device for the suppression of vortices |
| CN1254335C (en) * | 2001-03-27 | 2006-05-03 | Rhi股份有限公司 | Device for preventing a vortex effect in the discharge area of a metallurgical melting vessel |
| KR20090063784A (en) * | 2007-12-14 | 2009-06-18 | 주식회사 포스코 | Preventing apparatus for turndish choking |
| CN102554207A (en) * | 2012-01-17 | 2012-07-11 | 中冶南方工程技术有限公司 | Sliding water gap device capable of preventing vortex |
| CN102632228A (en) * | 2012-04-27 | 2012-08-15 | 宜兴市龙宸炉料有限公司 | Tundish of slag baffling device containing liquid outlet |
| CN202845766U (en) * | 2012-10-31 | 2013-04-03 | 昆明理工大学 | Plug rod type molten steel ladle for cast steel pouring |
| CN202845774U (en) * | 2012-10-31 | 2013-04-03 | 昆明理工大学 | Sliding nozzle type molten steel ladle for cast steel pouring |
| CN209110170U (en) * | 2018-12-03 | 2019-07-16 | 常州信息职业技术学院 | A kind of ladle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111266564A (en) | 2020-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111266564B (en) | Vortex blocking device for limiting generation of ladle vortex and application thereof | |
| CN104525929B (en) | A kind of method that ladle roughing slag is controlled by ladle bottom ring tapping hole blowing argon gas | |
| CN105965003B (en) | A kind of mouth of a river whirlwind generator and mouth of a river eddy flow continuous cast method | |
| CN108927511B (en) | Prevent long mouth of a river of export bias flow | |
| CN108570532A (en) | A method of improving directly upper steel grade quality and stopper rod flow control time | |
| CN101091982A (en) | Method and device for carrying out protected casting for shaped blank continuous casting by using single immersed nozzle | |
| CN106541120B (en) | Method for inhibiting slag entrapment of molten steel tank vortex | |
| CN204842961U (en) | Get rid of immersion nozzle of inclusion | |
| CN209465684U (en) | A kind of intermediate packet system of single stream of sheet slab continuous casting | |
| CN106270406B (en) | The cavity structure and method of wind power generating set rear box casting | |
| CN208772452U (en) | A kind of submersed nozzle convenient for controlling immersion depth | |
| Gushchin et al. | Improved tundish refining of steel in continuous-casting machines | |
| CN108436071B (en) | Spin-flow long nozzle for continuous casting | |
| CN109894587A (en) | A kind of generous specification slab CC tundish docking production technology | |
| CN215786720U (en) | Anti-turbulence tundish overflow type current stabilizer | |
| CN214349589U (en) | Two-hole submerged nozzle for high-pulling-speed billet continuous casting crystallizer | |
| CN210506416U (en) | Tapping hole for inhibiting vortex generation in converter tapping process and tapping hole assembly | |
| CN209174901U (en) | A kind of tundish upper nozzle of the long-acting flow control of steel-making continuous casting | |
| CN206677173U (en) | Rare earth steel and the mouth of a river used for aluminum-containing steel and middle steel ladle | |
| CN201410547Y (en) | Continuous casting tundish current regulator with platform structure | |
| CN220782233U (en) | Be used for slab to link cast submerged entry nozzle | |
| CN108213401A (en) | The method at the metallurgical mouth of a river and molding casting of molding casting | |
| KR20100046993A (en) | Stopper for tundish | |
| CN220515415U (en) | Split immersed type rotational flow water gap | |
| CN115058634B (en) | Method for producing lead-containing free cutting steel by tundish metallurgy technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |