CN106807931A - A kind of Dual-layer sealing device of big bag long nozzle - Google Patents
A kind of Dual-layer sealing device of big bag long nozzle Download PDFInfo
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- CN106807931A CN106807931A CN201710202843.3A CN201710202843A CN106807931A CN 106807931 A CN106807931 A CN 106807931A CN 201710202843 A CN201710202843 A CN 201710202843A CN 106807931 A CN106807931 A CN 106807931A
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- tube
- piece
- long nozzle
- big bag
- bag long
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- 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
- B22D41/502—Connection arrangements; Sealing means therefor
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention discloses a kind of Dual-layer sealing device of big bag long nozzle, described device is sealed including internal layer, described device is also sealed including outer layer, and the outer layer sealing includes the first tube-like piece (2), the second tube-like piece (7) and the 3rd tube-like piece (12)；First tube-like piece (2) sealing is fixed on the steel plate of steel ladle sliding water gap bottom (1), and lower openings；Second tube-like piece (7) and the 3rd tube-like piece (12) are nested together with one heart, and sealing is fixed on top the rim of a bowl lower surface of big bag long nozzle (10), and top the rim of a bowl is included in the 3rd tube-like piece (12)；Filling sealing agent (13) in the upper opening interlayer formed between the second tube-like piece (7) and the 3rd tube-like piece (12).Sealing device sealing is relatively simple, and the sealed environment of junction is relatively preferable, is easier to realize high-precision sealing.
Description
Technical field
The invention belongs to technical field of ferrous metallurgy, in particular it relates to a kind of big bag long nozzle is double-deck close
Seal apparatus.
Background technology
Typically using big bag long nozzle as the molten steel circulation passage between ladle and tundish during continuous casting, greatly
Bag long nozzle top is docked with ladle nozzle, and in bottom insertion tundish molten steel, flow velocity of the molten steel in big bag long nozzle is about 1
~3 meter per seconds, the effect of the steel miscarriage raw " jet pump " of quick flowing can be in surrounding air suction molten steel, if big bag long nozzle
It is poorly sealed between ladle nozzle, it may occur that serious molten steel secondary oxidation problem.Current ladle nozzle and big bag long nozzle
Between it is mostly be to be sealed using sealing gasket and logical argon gas, sealing gasket sealing is put between ladle nozzle and big bag long nozzle
One sealing gasket, mechanical arm will hold out against between ladle nozzle and big bag long nozzle, but due to ladle nozzle and big bag long nozzle
Material be refractory material, in order to prevent damaging the mouth of a river, the pressure between ladle nozzle and big bag long nozzle is limited, so
The sealing function of sealing gasket is limited, and argon gas-sealed is to lead to argon gas by the junction of ladle nozzle and big bag long nozzle, with argon
Gas excludes air, but due to during continuous casting ladle beam speed often change, in ladle beam produce " injection
In the presence of pump ", the suction for sucking gas also often changes, and due to big bag long nozzle and ladle nozzle contact surface stress not
Uniformly, and there is a cold steel, if argon blowing rate misoperation often results in suction air phenomenon, molten steel is oxidized.
Big bag long nozzle and the junction of ladle nozzle carry out it is high-precision sealing it is relatively difficult, its reason mainly have with
Lower 4 points, one is：It is required for carrying out changing ladle operation after having been poured due to every stove molten steel, big bag long nozzle need to be disassembled,
Then the mouth of a river with new ladle is reconnected, and has frequently disassembling section between big bag long nozzle and ladle nozzle, frequently
The big bag long nozzle of disassembling section requirement is as simple as possible with the connection equipment of ladle nozzle, and simply connects equipment sealing
It is bad.Secondly being：If misoperation in casting process, the interface between big bag long nozzle and ladle nozzle can be caused to have double steel
Phenomenon, the molten steel routed up can destroy the sealing of interface, thirdly being：Continuous Cast Molten Steel Temperature is very high, the difficult sealing under hot environment
Degree is very big, and it four is：Big faying face between bag long nozzle and ladle nozzle is smaller, and less faying face is unfavorable for sealing.
The content of the invention
In order to solve the deficiency of above technology, the present invention provides a kind of Dual-layer sealing device of big bag long nozzle.The sealing
Device sealing is relatively simple, and the sealed environment of junction is relatively preferable, is easier to realize high-precision sealing.
To reach above-mentioned purpose, present invention employs following technical scheme：
A kind of Dual-layer sealing device of big bag long nozzle, described device is sealed including internal layer, and described device also includes outer layer
Sealing, the outer layer sealing includes the first tube-like piece 2, the second tube-like piece 7 and the 3rd tube-like piece 12；First tube-like piece 2 is close
Sealing is scheduled on the steel plate 1 of steel ladle sliding water gap bottom, and lower openings；The tube-like piece 12 of second tube-like piece 7 and the 3rd is same
The heart is nested together, and sealing is fixed on top the rim of a bowl lower surface of big bag long nozzle 10, and top the rim of a bowl is included in into the 3rd pipe
In shape part 12；Filling sealing agent 13 in the upper opening interlayer formed between the second tube-like piece 7 and the 3rd tube-like piece 12.
Preferably, the internal layer is sealed into argon gas-sealed.
It is further preferred that the argon gas-sealed includes argon seal apparatus 6, argon gas pipeline 8 and argon gas source 9；The argon gas
Pipeline 8 is connected through the bottom of the second tube-like piece 7 with argon seal apparatus 6.
Preferably, first tube-like piece 2 is more than with the internal diameter that ladle nozzle 3 has identical center line, the first tube-like piece 2
The external diameter of ladle nozzle 3, the length of the length of the first tube-like piece 2 more than ladle nozzle 3 outside ladle, ladle nozzle and big
After the completion of the docking of bag long nozzle, the lower surface about 5 of top the rim of a bowl of the big bag long nozzle of distance from bottom of the first tube-like piece 2~
10mm。
Preferably, the internal diameter that the second tube-like piece 7 has identical center line, the second tube-like piece 7 with big bag long nozzle 10 is more than
The external diameter of the first tube-like piece 2.
Preferably, second tube-like piece 7 and the height of the 3rd tube-like piece 12 are 50~100mm, the 3rd tube-like piece 12 away from
It is 20~40mm with a distance from the outer wall of big bag long nozzle 10.
Preferably, the sealant 13 is the mixture of solid-state organic high molecular compound and fire proofing.
It is further preferred that the solid-state organic high molecular compound is TPI.
The first tube-like piece, the second tube-like piece and the 3rd tube-like piece are made using ferrous material in the present invention, such as iron sheet.
The present invention welds first tube-like piece that Open Side Down as sealing on the steel plate of steel ladle sliding water gap bottom
The top half of cover, connects second tube-like piece of opening upwards as close at the top of the big bag long nozzle at the lower surface of the rim of a bowl
The latter half of sealing cover, in ladle nozzle and big bag long nozzle docking operation, the bottom insertion lower half of top half seal closure
Divide the bottom of seal closure, complete the docking of seal closure, the bound fraction use of top half seal closure and the latter half seal closure
Solid-state organic high molecular compound becomes sticky as sealant, solid-state organic high molecular compound in the presence of steel flow heat dissipation
And have mobility, and preferably sealing can be realized, there are the 3rd tube-like piece, the 3rd pipe between the second tube-like piece and big bag long nozzle
Shape part decapacitation is played a part of to prevent sealant from flowing to outside big bag long nozzle outer wall, moreover it is possible to play heat-insulated effect.
Due to big bag long nozzle and the junction of ladle nozzle carry out it is high-precision sealing it is relatively difficult, so original
On the basis of sealing, an additional seal closure, the sealing knot of seal closure around the junction of big bag long nozzle and ladle nozzle
At conjunction from molten steel beam farther out, the temperature at this is relatively low, so the requirement to sealed material is relatively low, and the interference without double steel,
So carrying out sealing relatively simple to the junction of seal closure.The sealed environment of the junction of seal closure is relatively preferable, compared with
Easily realize high-precision sealing.Original water-tight equipment constitutes double-layer seal plus seal closure, can further improve big Bao Changshui
Sealing between mouth and ladle nozzle.
Advantages of the present invention
1st, the apparatus and method provided according to the present invention, additional around the junction of big bag long nozzle and ladle nozzle
Individual seal closure, from molten steel beam farther out, the temperature at this is relatively low for the sealing junction of seal closure, so the requirement to sealed material
It is relatively low, and the interference without double steel, so carrying out sealing relatively simple, the junction of seal closure to the junction of seal closure
Sealed environment it is relatively preferable, high-precision sealing can be realized.
2nd, in the docking operation for completing big bag long nozzle and ladle nozzle with mechanical arm, the upper the latter half of seal closure
Also docking can be accordingly automatically performed, then under the influence of the radiating of big bag long nozzle, the latter half junction on seal closure
Sealant softens and flows, and completes automatic-sealed, and seal operation is simple.
3rd, sealant is solid-state organic high molecular compound, under the influence of the radiating of big bag long nozzle, becomes thick liquid
Viscous force between body, with seal closure and big bag long nozzle wall is larger, preferably sealing can be realized, according to air pressure change principle and close
The liquid fluctuating for sealing agent may determine that whether argon envelope flow is suitable, then adjust argon envelope flow, improve argon envelope effect.
Brief description of the drawings
Fig. 1 is the structural representation of the Dual-layer sealing device of big bag long nozzle；
Fig. 2 is the vertical cross section of the Dual-layer sealing device of big bag long nozzle；
Fig. 3 is the vertical cross section of the upper and lower two parts junction of seal closure before big bag long nozzle pours into a mould the first stove molten steel；
Fig. 4 is the horizontal sectional drawing of the upper and lower two parts junction of seal closure before big bag long nozzle pours into a mould the first stove molten steel；
Fig. 5 be casting process in, the vertical cross section of the upper and lower two parts junction of seal closure；
Fig. 6 be casting process in, the additional upper and lower two parts junction of seal closure around big bag long nozzle and ladle nozzle
Horizontal sectional drawing；
Reference：1st, the steel plate of steel ladle sliding water gap bottom；2nd, the first tube-like piece；3rd, ladle nozzle；4th, ladle nozzle
In steel circulation road；5th, sealing gasket；6th, argon seal apparatus；7th, the second tube-like piece；8th, argon gas pipeline；9th, argon gas source；10th, big Bao Changshui
Mouthful；11st, the steel circulation road in big bag long nozzle；12nd, the 3rd tube-like piece；13rd, sealant；14th, great circle ring-type organic polymer
Compound；15th, roundlet ring-type organic high molecular compound.
Specific embodiment
With the drawings and specific embodiments, the present invention is further detailed explanation below.
The structural representation of the Dual-layer sealing device of big bag long nozzle is as shown in figure 1, the double-layer seal dress of big bag long nozzle
As shown in Fig. 2 a kind of Dual-layer sealing device of big bag long nozzle, described device includes internal layer sealing, institute for the vertical cross section put
State device also to be sealed including outer layer, the outer layer sealing includes the first tube-like piece 2, the second tube-like piece 7 and the 3rd tube-like piece 12；Institute
The sealing of the first tube-like piece 2 is stated to be fixed on the steel plate 1 of steel ladle sliding water gap bottom, and lower openings；The He of second tube-like piece 7
3rd tube-like piece 12 is nested together with one heart, and sealing is fixed on top the rim of a bowl lower surface of big bag long nozzle 10, by top bowl
Mouth is included in the 3rd tube-like piece 12；Filled out in the upper opening interlayer formed between the second tube-like piece 7 and the 3rd tube-like piece 12
Fill sealant 13.
Specifically setting up procedure can be：Weld one on the steel plate 1 of steel ladle sliding water gap bottom Open Side Down first
As the top half of seal closure, the lower open of the first tube-like piece 2, top and the ladle of the first tube-like piece 2 slide water to tube-like piece 2
The closed soldering of steel plate 1 of mouth bottom.First tube-like piece 2 and ladle nozzle 3 have an identical center line, the first tube-like piece 2 it is interior
Footpath is slightly larger than the external diameter of ladle nozzle 3, and the length of the first tube-like piece 2 is exposed to the length outside ladle slightly larger than ladle nozzle 3,
Ladle nozzle is bundled into after the completion of the docking of the mouth of a river with big, the following table of big bag long nozzle top the rim of a bowl of distance from bottom of the first tube-like piece 2
Face about 5~10mm.In the manufacturing process of big bag long nozzle, one opening of connection at the lower surface of the rim of a bowl at the top of the big bag long nozzle
The second upward tube-like piece 7 as seal closure the latter half, the bottom of the second tube-like piece 7 and big bag long nozzle top the rim of a bowl
Lower surface airtight connection, the opened upper end of the second tube-like piece 7, the second tube-like piece 7 has identical center line with big bag long nozzle 10, the
Slightly larger than the external diameter of the first tube-like piece 2, the bottom of the second tube-like piece 7 is provided with an aperture, is welded on aperture the internal diameter of two tube-like pieces 7
A steel pipe is connect as argon gas pipeline 8, one end of steel pipe is connected with the argon seal apparatus 6 at the rim of a bowl of big bag long nozzle top, another
End is connected with argon gas source 9.The height of the second tube-like piece 7 is 50~100mm, the second tube-like piece 7 and big bag long nozzle top the rim of a bowl
Between have the 3rd tube-like piece 12 of a circle opening upwards, the 3rd tube-like piece 12 is 7 highly identical with the second tube-like piece, internal diameter is identical,
3rd tube-like piece 12 is apart from big bag long nozzle outer wall about 20~40mm.
In ladle nozzle 3 and the big docking operation of bag long nozzle 10, the bottom insertion the latter half of top half seal closure is close
The interlayer bottom of sealing cover, completes the docking of seal closure, and the sealing between the first tube-like piece 2 and the second tube-like piece 7 uses sealant
13 sealings, big bag long nozzle 10 gives out during continuous casting the heat sealant 13 so that the sealant 13 becomes
Obtain sticky and have mobility, preferably sealing can be realized.
The sealant 13 is at normal temperatures solid-state, and its mobility temperature is lower by 30~60 than the temperature around big bag long nozzle
DEG C, it is added with fire proofing in the sealant 13 so that within the temperature range of around the big bag long nozzle, the sealant 13 will not
Burning, is processed into annular shape by the sealant 13 in advance, is divided into two kinds of shapes of great circle ring-type and roundlet ring-type (respectively large circle
Shape organic high molecular compound 14 and roundlet ring-type organic high molecular compound 15), the sealant is attached to sealing to facilitate
Place.
Great circle ring-type organic high molecular compound 14 is attached to the first tube-like piece 2 by big bag long nozzle for the first time using preceding
Outer surface and the inner surface of the second tube-like piece 7 junction, roundlet ring-type organic high molecular compound 15 is attached to the first pipe
The inner surface of shape part 2 and the junction of the outer surface of the 3rd tube-like piece 12, after installation, great circle ring-type organic high molecular compound 14
To the effect in filling seal closure upper and lower two parts junction gap.Roundlet ring-type organic high molecular compound 15 plays filling first
The effect in gap between the bottom of tube-like piece 2 and the 3rd tube-like piece 12.After ladle nozzle 3 is docked with big bag long nozzle 10, the first half
Divide the interlayer bottom of the bottom insertion the latter half seal closure of seal closure, complete the docking of seal closure.Big bag long nozzle cast the
Before one heat steel water, the vertical cross section of the upper and lower two parts junction of seal closure is as shown in figure 3, the upper and lower two parts junction of seal closure
Horizontal sectional drawing as shown in figure 4, in casting process, after sealant dissolves, the vertical of the upper and lower two parts junction of seal closure is cutd open
Face figure is as shown in figure 5, the horizontal sectional drawing of the upper and lower two parts junction of seal closure is as shown in Figure 6.
, more than the external diameter of the first tube-like piece 2, external diameter is less than the second pipe for the internal diameter of great circle ring-type organic high molecular compound 14
The internal diameter of shape part 7, the thickness of the great circle ring-type organic high molecular compound 14 is the internal diameter and the first tube-like piece of the second tube-like piece 7
The 50%~80% of 2 external diameter difference, the height of the large circle is 50~80mm.
, less than the internal diameter of the first tube-like piece 2, internal diameter is more than the 3rd pipe for the external diameter of roundlet ring-type organic high molecular compound 15
The external diameter of shape part 12, the thickness of the roundlet ring-type organic high molecular compound 15 is the internal diameter and the 3rd tubulose of the first tube-like piece 2
The 50%~80% of the difference of the external diameter of part 12, the height of the small circle ring is 50~80mm.
Before pouring into a mould the first stove molten steel using the big bag long nozzle, sealing gasket 5 is installed in the rim of a bowl on big bag long nozzle top,
And great circle ring-type organic high molecular compound 14 is attached to outer surface and the inner surface of the second tube-like piece 7 of the first tube-like piece 2
Junction, roundlet ring-type organic high molecular compound 15 is attached to outside the inner surface of the first tube-like piece 2 and the 3rd tube-like piece 12
The junction on surface, big bag long nozzle 10 then docked and held out against using mechanical arm with ladle nozzle 3, and docking is completed
Afterwards, the valve of argon gas source 9 is opened, argon gas is flowed into the argon seal apparatus 6 at the rim of a bowl of big bag long nozzle top, play argon envelope effect.
After big bag long nozzle 10 is docked with ladle nozzle 3, bottom insertion great circle ring-type and the organic high score of roundlet ring-type of the first tube-like piece 2
Between sub- compound, with the carrying out of continuous casting, steel stream heats big bag long nozzle 10, in the presence of the radiating of big bag long nozzle 10,
Large circle and roundlet ring-type organic high molecular compound soften and flow to the gap and of the upper and lower two parts junction of seal closure
Gap between the bottom of one tube-like piece 2 and the 3rd tube-like piece 12, plays the effect of sealing, and according to air pressure change principle, continuous casting is poured
Can judge whether argon envelope flow is suitable, reaches the effect that precise control argon seals flow during note according to the liquid fluctuating of sealant
Really.If the sealant liquid level between the bottom of the first tube-like piece 2 and the 3rd tube-like piece 12 is raised, illustrate that argon envelope flow is too small, need
Argon envelope flow is tuned up, if the sealant liquid level between the bottom of the second tube-like piece 7 and the first tube-like piece 2 is raised, illustrates that argon is sealed
Flow is excessive, argon envelope flow need to be turned down.
After pouring the first stove molten steel using the big bag long nozzle 10, carry out changing ladle operation, close the valve of argon gas source 9
Door, disassembles big bag long nozzle 10 with mechanical arm, and adds appropriate organic polymer to the bottom of the second tube-like piece 7
Compound particle, to compensate the loss of sealant 13 in casting process, bale panoramic tables are rotated, after new ladle goes to cast position,
Docking and argon envelope operation for big bag long nozzle and ladle nozzle is carried out, is only needed 1~2 minute due to changing the bag time, sealant is still
Liquid, in the bottom insertion liquid sealant of the first tube-like piece 2, sealing effectiveness is still good.
Embodiment 1：
The Dual-layer sealing device schematic diagram of big bag long nozzle is as shown in figure 1, the Dual-layer sealing device of big bag long nozzle is vertical
Profile as shown in Fig. 2 on the steel plate 1 of steel ladle sliding water gap bottom weld first tube-like piece 2 that Open Side Down as
The top half of seal closure, the lower open of the first tube-like piece 2, the top of the first tube-like piece 2 and the steel of steel ladle sliding water gap bottom
The closed soldering of plate 1.The internal diameter that first tube-like piece 2 has identical center line, the first tube-like piece 2 with ladle nozzle 3 is slightly larger than steel
The external diameter of water-coating port 3, the length of the length of the first tube-like piece 2 slightly larger than ladle nozzle 3 outside ladle, ladle nozzle and
It is big to be bundled into after the completion of the docking of the mouth of a river, the lower surface about 5mm of big bag long nozzle top the rim of a bowl of distance from bottom of the first tube-like piece 2.Greatly
In the manufacturing process of bag long nozzle, second tubulose of opening upwards is connected at the top of the big bag long nozzle at the lower surface of the rim of a bowl
Part 7 as seal closure the latter half, the closed company of lower surface of the bottom of the second tube-like piece 7 and big bag long nozzle top the rim of a bowl
Connect, the opened upper end of the second tube-like piece 7, the second tube-like piece 7 has identical center line with big bag long nozzle 10, the second tube-like piece 7
Slightly larger than the external diameter of the first tube-like piece 2, the bottom of the second tube-like piece 7 is provided with an aperture, a steel pipe is welded on aperture internal diameter
Used as argon gas pipeline 8, the argon seal apparatus 6 at the rim of a bowl of one end of steel pipe and big bag long nozzle top are connected, the other end and argon gas source 9
Connection.The height of the second tube-like piece 7 is 50mm, have between the second tube-like piece 7 and big bag long nozzle top the rim of a bowl a circle be open to
On the 3rd tube-like piece 12, the 3rd tube-like piece 12 is 7 highly identical with the second tube-like piece, internal diameter is identical, the distance of the 3rd tube-like piece 12
Big bag long nozzle outer wall about 20mm.
In ladle nozzle 3 and the big docking operation of bag long nozzle 10, the bottom insertion the latter half of top half seal closure is close
The bottom of sealing cover, completes the docking of seal closure, and the sealing between the first tube-like piece 2 and the second tube-like piece 7 is close using sealant 13
Envelope, big bag long nozzle 10 gives out during continuous casting the heat sealant 13 so that the sealant 13 becomes viscous
It is thick and have mobility, preferably sealing can be realized.
The sealant 13 is at normal temperatures solid-state, and its mobility temperature is lower by 30~60 than the temperature around big bag long nozzle
DEG C, it is added with fire proofing in the sealant 13 so that within the temperature range of around the big bag long nozzle, the sealant 13 will not
Burning, considers factors above, and it is TPI to select the sealant 13.In advance by the macromolecular organic compound
13 are processed into annular shape, are divided into two kinds of shapes of great circle ring-type and roundlet ring-type, are installed the macromolecular organic compound with facilitating
To sealing.
Great circle ring-type organic high molecular compound 14 is attached to the first tube-like piece 2 by big bag long nozzle for the first time using preceding
Outer surface and the inner surface of the second tube-like piece 7 junction, roundlet ring-type organic high molecular compound 15 is attached to the first pipe
The inner surface of shape part 2 and the junction of the outer surface of the 3rd tube-like piece 12, after installation, great circle ring-type organic high molecular compound 14
To the effect in filling seal closure upper and lower two parts junction gap.Roundlet ring-type organic high molecular compound 15 plays filling first
The effect in gap between the bottom of tube-like piece 2 and the 3rd tube-like piece 12.After ladle nozzle 3 is docked with big bag long nozzle 10, the first half
Divide the bottom of the bottom insertion the latter half seal closure of seal closure, complete the docking of seal closure.Big bag long nozzle pours into a mould the first stove
Before molten steel, the vertical cross section of the upper and lower two parts junction of seal closure is as shown in figure 3, the water of the upper and lower two parts junction of seal closure
Flat sectional drawing as shown in figure 4, in casting process, after sealant dissolves, the vertical cross section of the upper and lower two parts junction of seal closure
As shown in figure 5, the horizontal sectional drawing of the upper and lower two parts junction of seal closure is as shown in Figure 6.
, more than the external diameter of the first tube-like piece 2, external diameter is less than the second pipe for the internal diameter of great circle ring-type organic high molecular compound 14
The internal diameter of shape part 7, the thickness of the great circle ring-type organic high molecular compound 14 is the internal diameter and the first tube-like piece of the second tube-like piece 7
The 50%% of 2 external diameter difference, the height of the large circle is 50mm.
, less than the internal diameter of the first tube-like piece 2, internal diameter is more than the 3rd pipe for the external diameter of roundlet ring-type organic high molecular compound 15
The external diameter of shape part 12, the thickness of the roundlet ring-type organic high molecular compound 15 is the internal diameter and the 3rd tubulose of the first tube-like piece 2
The 50% of the difference of the external diameter of part 12, the height of the small circle ring is 50mm.
Before pouring into a mould the first stove molten steel using the big bag long nozzle, sealing gasket 5 is installed in the rim of a bowl on big bag long nozzle top,
And great circle ring-type organic high molecular compound 14 is attached to outer surface and the inner surface of the second tube-like piece 7 of the first tube-like piece 2
Junction, roundlet ring-type organic high molecular compound 15 is attached to outside the inner surface of the first tube-like piece 2 and the 3rd tube-like piece 12
The junction on surface, big bag long nozzle 10 then docked and held out against using mechanical arm with ladle nozzle 3, and docking is completed
Afterwards, the valve of argon gas source 9 is opened, argon gas is flowed into the argon seal apparatus 6 at the rim of a bowl of big bag long nozzle top, play argon envelope effect.
After big bag long nozzle 10 is docked with ladle nozzle 3, bottom insertion great circle ring-type and the organic high score of roundlet ring-type of the first tube-like piece 2
Between sub- compound, with the carrying out of continuous casting, steel stream heats big bag long nozzle 10, in the presence of the radiating of big bag long nozzle 10,
Large circle and roundlet ring-type organic high molecular compound soften and flow to the gap and of the upper and lower two parts junction of seal closure
Gap between the bottom of one tube-like piece 2 and the 3rd tube-like piece 12, plays the effect of sealing, and according to air pressure change principle, continuous casting is poured
Can judge whether argon envelope flow is suitable, reaches the effect that precise control argon seals flow during note according to the liquid fluctuating of sealant
Really.If the sealant liquid level between the bottom of the first tube-like piece 2 and the 3rd tube-like piece 12 is raised, illustrate that argon envelope flow is too small, need
Argon envelope flow is tuned up, if the sealant liquid level between the bottom of the second tube-like piece 7 and the first tube-like piece 2 is raised, illustrates that argon is sealed
Flow is excessive, argon envelope flow need to be turned down.
After pouring the first stove molten steel using the big bag long nozzle 10, carry out changing ladle operation, close the valve of argon gas source 9
Door, disassembles big bag long nozzle 10 with mechanical arm, and adds appropriate organic polymer to the bottom of the second tube-like piece 7
Compound particle, to compensate the loss of sealant 13 in casting process, bale panoramic tables are rotated, after new ladle goes to cast position,
Docking and argon envelope operation for big bag long nozzle and ladle nozzle is carried out, is only needed 1~2 minute due to changing the bag time, sealant is still
Liquid, in the bottom insertion liquid sealant of the first tube-like piece 2, sealing effectiveness is still good.
After the technology provided using the present invention carries out double-layer seal to big bag long nozzle, big bag long water gap bowl oral area position it is close
Envelope effect significantly improve, secondary oxidation of steel degree is further reduced in casting process, in molten steel total oxygen content reduction 5ppm with
On.
Embodiment 2：
The Dual-layer sealing device schematic diagram of big bag long nozzle is as shown in figure 1, the Dual-layer sealing device of big bag long nozzle is vertical
Profile as shown in Fig. 2 on the steel plate 1 of steel ladle sliding water gap bottom weld first tube-like piece 2 that Open Side Down as
The top half of seal closure, the lower open of the first tube-like piece 2, the top of the first tube-like piece 2 and the steel of steel ladle sliding water gap bottom
The closed soldering of plate 1.The internal diameter that first tube-like piece 2 has identical center line, the first tube-like piece 2 with ladle nozzle 3 is slightly larger than steel
The external diameter of water-coating port 3, the length of the length of the first tube-like piece 2 slightly larger than ladle nozzle 3 outside ladle, ladle nozzle and
It is big to be bundled into after the completion of the docking of the mouth of a river, the lower surface about 10mm of big bag long nozzle top the rim of a bowl of distance from bottom of the first tube-like piece 2.Greatly
In the manufacturing process of bag long nozzle, second tubulose of opening upwards is connected at the top of the big bag long nozzle at the lower surface of the rim of a bowl
Part 7 as seal closure the latter half, the closed company of lower surface of the bottom of the second tube-like piece 7 and big bag long nozzle top the rim of a bowl
Connect, the opened upper end of the second tube-like piece 7, the second tube-like piece 7 has identical center line with big bag long nozzle 10, the second tube-like piece 7
Slightly larger than the external diameter of the first tube-like piece 2, the bottom of the second tube-like piece 7 is provided with an aperture, a steel pipe is welded on aperture internal diameter
Used as argon gas pipeline 8, the argon seal apparatus 6 at the rim of a bowl of one end of steel pipe and big bag long nozzle top are connected, the other end and argon gas source 9
Connection.The height of the second tube-like piece 7 is 100mm, have between the second tube-like piece 7 and big bag long nozzle top the rim of a bowl a circle be open to
On the 3rd tube-like piece 12, the 3rd tube-like piece 12 is 7 highly identical with the second tube-like piece, internal diameter is identical, the distance of the 3rd tube-like piece 12
Big bag long nozzle outer wall about 40mm.
In ladle nozzle 3 and the big docking operation of bag long nozzle 10, the bottom insertion the latter half of top half seal closure is close
The bottom of sealing cover, completes the docking of seal closure, and the sealing between the first tube-like piece 2 and the second tube-like piece 7 is close using sealant 13
Envelope, big bag long nozzle 10 gives out during continuous casting the heat sealant 13 so that the sealant 13 becomes viscous
It is thick and have mobility, preferably sealing can be realized.
The sealant 13 is at normal temperatures solid-state, and its mobility temperature is lower by 30~60 than the temperature around big bag long nozzle
DEG C, it is added with fire proofing in the sealant 13 so that within the temperature range of around the big bag long nozzle, the sealant 13 will not
Burning, considers factors above, and it is TPI to select the sealant 13.In advance by the macromolecular organic compound
13 are processed into annular shape, are divided into two kinds of shapes of great circle ring-type and roundlet ring-type, are installed the macromolecular organic compound with facilitating
To sealing.
Great circle ring-type organic high molecular compound 14 is attached to the first tube-like piece 2 by big bag long nozzle for the first time using preceding
Outer surface and the inner surface of the second tube-like piece 7 junction, roundlet ring-type organic high molecular compound 15 is attached to the first pipe
The inner surface of shape part 2 and the junction of the outer surface of the 3rd tube-like piece 12, after installation, great circle ring-type organic high molecular compound 14
To the effect in filling seal closure upper and lower two parts junction gap.Roundlet ring-type organic high molecular compound 15 plays filling first
The effect in gap between the bottom of tube-like piece 2 and the 3rd tube-like piece 12.After ladle nozzle 3 is docked with big bag long nozzle 10, the first half
Divide the bottom of the bottom insertion the latter half seal closure of seal closure, complete the docking of seal closure.Big bag long nozzle pours into a mould the first stove
Before molten steel, the vertical cross section of the upper and lower two parts junction of seal closure is as shown in figure 3, the water of the upper and lower two parts junction of seal closure
Flat sectional drawing as shown in figure 4, in casting process, after sealant dissolves, the vertical cross section of the upper and lower two parts junction of seal closure
As shown in figure 5, the horizontal sectional drawing of the upper and lower two parts junction of seal closure is as shown in Figure 6.
, more than the external diameter of the first tube-like piece 2, external diameter is less than the second pipe for the internal diameter of great circle ring-type organic high molecular compound 14
The internal diameter of shape part 7, the thickness of the great circle ring-type organic high molecular compound 14 is the internal diameter and the first tube-like piece of the second tube-like piece 7
The 580% of 2 external diameter difference, the height of the large circle is 80mm.
, less than the internal diameter of the first tube-like piece 2, internal diameter is more than the 3rd pipe for the external diameter of roundlet ring-type organic high molecular compound 15
The external diameter of shape part 12, the thickness of the roundlet ring-type organic high molecular compound 15 is the internal diameter and the 3rd tubulose of the first tube-like piece 2
The 80% of the difference of the external diameter of part 12, the height of the small circle ring is 80mm.
Before pouring into a mould the first stove molten steel using the big bag long nozzle, sealing gasket 5 is installed in the rim of a bowl on big bag long nozzle top,
And great circle ring-type organic high molecular compound 14 is attached to outer surface and the inner surface of the second tube-like piece 7 of the first tube-like piece 2
Junction, roundlet ring-type organic high molecular compound 15 is attached to outside the inner surface of the first tube-like piece 2 and the 3rd tube-like piece 12
The junction on surface, big bag long nozzle 10 then docked and held out against using mechanical arm with ladle nozzle 3, and docking is completed
Afterwards, the valve of argon gas source 9 is opened, argon gas is flowed into the argon seal apparatus 6 at the rim of a bowl of big bag long nozzle top, play argon envelope effect.
After big bag long nozzle 10 is docked with ladle nozzle 3, bottom insertion great circle ring-type and the organic high score of roundlet ring-type of the first tube-like piece 2
Between sub- compound, with the carrying out of continuous casting, steel stream heats big bag long nozzle 10, in the presence of the radiating of big bag long nozzle 10,
Large circle and roundlet ring-type organic high molecular compound soften and flow to the gap and of the upper and lower two parts junction of seal closure
Gap between the bottom of one tube-like piece 2 and the 3rd tube-like piece 12, plays the effect of sealing, and according to air pressure change principle, continuous casting is poured
Can judge whether argon envelope flow is suitable, reaches the effect that precise control argon seals flow during note according to the liquid fluctuating of sealant
Really.If the sealant liquid level between the bottom of the first tube-like piece 2 and the 3rd tube-like piece 12 is raised, illustrate that argon envelope flow is too small, need
Argon envelope flow is tuned up, if the sealant liquid level between the bottom of the second tube-like piece 7 and the first tube-like piece 2 is raised, illustrates that argon is sealed
Flow is excessive, argon envelope flow need to be turned down.
After pouring the first stove molten steel using the big bag long nozzle 10, carry out changing ladle operation, close the valve of argon gas source 9
Door, disassembles big bag long nozzle 10 with mechanical arm, and adds appropriate organic polymer to the bottom of the second tube-like piece 7
Compound particle, to compensate the loss of sealant 13 in casting process, bale panoramic tables are rotated, after new ladle goes to cast position,
Docking and argon envelope operation for big bag long nozzle and ladle nozzle is carried out, is only needed 1~2 minute due to changing the bag time, sealant is still
Liquid, in the bottom insertion liquid sealant of the first tube-like piece 2, sealing effectiveness is still good.
It should be noted last that, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although ginseng
The present invention is described in detail according to embodiment, it will be apparent to an ordinarily skilled person in the art that to technical side of the invention
Case is modified or equivalent, and without departure from the spirit and scope of technical solution of the present invention, it all should cover in the present invention
Right in the middle of.
Claims (8)
1. a kind of Dual-layer sealing device of big bag long nozzle, described device includes internal layer sealing, it is characterised in that described device is also
Including outer layer sealing, the outer layer sealing includes the first tube-like piece (2), the second tube-like piece (7) and the 3rd tube-like piece (12)；It is described
First tube-like piece (2) sealing is fixed on the steel plate of steel ladle sliding water gap bottom (1), and lower openings；Second tube-like piece
(7) it is nested together with one heart with the 3rd tube-like piece (12), and sealing is fixed on top the rim of a bowl lower surface of big bag long nozzle (10),
Top the rim of a bowl is included in the 3rd tube-like piece (12)；What is formed between the second tube-like piece (7) and the 3rd tube-like piece (12) is upper
Filling sealing agent (13) in the interlayer of portion opening.
2. the Dual-layer sealing device of big bag long nozzle according to claim 1, it is characterised in that the internal layer is sealed into argon
Hermetic seal.
3. the Dual-layer sealing device of big bag long nozzle according to claim 2, it is characterised in that the argon gas-sealed includes
Argon seal apparatus (6), argon gas pipeline (8) and argon gas source (9)；The argon gas pipeline (8) is through the bottom of the second tube-like piece (7) and argon
Seal apparatus (6) are connected.
4. the Dual-layer sealing device of big bag long nozzle according to claim 1, it is characterised in that first tube-like piece
(2) there are identical center line, the external diameter of the internal diameter more than ladle nozzle (3) of the first tube-like piece (2), first with ladle nozzle (3)
The length of tube-like piece (2) is more than length of the ladle nozzle (3) outside ladle, and ladle nozzle and the docking of big bag long nozzle are completed
Afterwards, the lower surface about 5~10mm of top the rim of a bowl of the big bag long nozzle of the distance from bottom of the first tube-like piece (2).
5. the Dual-layer sealing device of big bag long nozzle according to claim 1, it is characterised in that the second tube-like piece (7) with
Big bag long nozzle (10) has identical center line, the external diameter of the internal diameter more than the first tube-like piece (2) of the second tube-like piece (7).
6. the Dual-layer sealing device of big bag long nozzle according to claim 1, it is characterised in that second tube-like piece
(7) and the 3rd tube-like piece (12) is highly 50~100mm, the 3rd tube-like piece (12) is apart from the outer wall of big bag long nozzle (10)
Distance is 20~40mm.
7. the Dual-layer sealing device of big bag long nozzle according to claim 1, it is characterised in that the sealant (13) is
The mixture of solid-state organic high molecular compound and fire proofing.
8. the Dual-layer sealing device of big bag long nozzle according to claim 7, it is characterised in that the organic high score of solid-state
Sub- compound is TPI.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710202843.3A CN106807931A (en) | 2017-03-30 | 2017-03-30 | A kind of Dual-layer sealing device of big bag long nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710202843.3A CN106807931A (en) | 2017-03-30 | 2017-03-30 | A kind of Dual-layer sealing device of big bag long nozzle |
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ID=59116653
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| CN201710202843.3A Pending CN106807931A (en) | 2017-03-30 | 2017-03-30 | A kind of Dual-layer sealing device of big bag long nozzle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109382506A (en) * | 2018-11-20 | 2019-02-26 | 山东钢铁股份有限公司 | A kind of method of molten steel nitrogen increased amount in reduction continuous casting process |
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