CN212144490U - Rotational flow and steady flow submersed nozzle - Google Patents
Rotational flow and steady flow submersed nozzle Download PDFInfo
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- CN212144490U CN212144490U CN201922157721.4U CN201922157721U CN212144490U CN 212144490 U CN212144490 U CN 212144490U CN 201922157721 U CN201922157721 U CN 201922157721U CN 212144490 U CN212144490 U CN 212144490U
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Abstract
The utility model provides a whirl stationary flow immersion nozzle mainly comprises runner inner chamber 1, delivery port 2, mouth of a river runner 3, bottom delivery port 4, water conservancy diversion face 5. The molten steel can form a rotational flow shape when flowing out from the steel tapping hole, the molten steel rotates and flows, the uniformity and the stability of the molten steel outflow are effectively improved, the molten steel flowing state and the temperature distribution in the crystallizer are improved, the liquid level fluctuation at the meniscus in the crystallizer is reduced, the pulling speed is improved, the inner wall nodulation of the submerged nozzle is reduced, and the impact depth of the molten steel in the crystallizer is reduced. The rotational flow of the molten steel can increase the flow between the molten steel and the inner wall of the submerged nozzle, so that Al is generated2O3The impurities are not easy to adhere to the inner wall of the nozzle, thereby reducing nozzle nodulation and improving molten steel drawingAnd the steel billet quality is greatly improved.
Description
Technical Field
The utility model relates to a metallurgical casting technical field especially relates to a whirl stationary flow immersion nozzle.
Background
The submerged nozzle is arranged between the tundish and the crystallizer and has the function of preventing the molten steel flowing out of the tundish from being secondarily oxidized and splashed. At present, the conventional submerged nozzle mainly comprises a side hole submerged nozzle and a straight-through submerged nozzle, and the conventional submerged nozzle cannot enable molten steel to form a certain stable flow field at the outlet end of the nozzle due to the simplification of the structure, so that the flowing instability of the molten steel can be reduced, and the temperature distribution of the molten steel in the crystallizer is uneven. In addition, the unstable molten steel flow field can cause huge impact on the narrow surface of the crystallizer, so that the impact surface material of the crystallizer is damaged in advance, and the flow rate of the molten steel on the wide surface is low, so that the blank drawing speed is influenced. In addition, because a large amount of oxides are mixed in the molten steel, when the outlet flow rate is too low, the impurities can be attached to the wall of the nozzle, so that the nozzle is nodulated, the service life of the nozzle is shortened, and the billet yield is influenced. The utility model discloses a in order to overcome above-mentioned defect, designed a whirl stationary flow immersion nozzle. Especially for the continuous casting of wide slabs, the flow of molten steel can be accelerated at the bottom and the side parts, the speed of drawing is increased, and the continuous casting efficiency is improved.
Disclosure of Invention
The utility model relates to a whirl stationary flow immersion nozzle is a whirl immersion nozzle that continuous casting used, and its structure mainly comprises runner inner chamber 1, delivery port 2, mouth of a river runner 3, bottom delivery port 4, water conservancy diversion face 5. The inner cavity 1 of the flow channel is of a circular cross section and is communicated with the bottom of a water gap to be connected with a bottom water outlet 4, the cross section of the bottom water outlet 4 is circular, the diameter range is 5-30mm, 2-6 water outlets 2 are arranged by taking the axis of the water gap as the center of a circle, the vertical projection of the water outlets 2 is a rounded rectangle, the radius range of the rounded corner is 2-10mm, the length of the rectangle is 5-80mm, and the width of the rectangle is 5-70 mm. The water outlet 2 is provided with a flow guide surface 5, and the included angle between the flow guide surface 5 and the radius of the section circle is 10-40 degrees. On the vertical section, a water gap flow channel 3 is arranged at an included angle of 10-60 degrees along the horizontal axis, and the water gap flow channel 3 penetrates from a water outlet 2 to a flow channel inner cavity 1 along the diameter direction of a water gap section circle.
The utility model provides a whirl immersion nozzle when using, can form the whirl form when the molten steel flows from the steel-tapping hole, and the molten steel is rotatory to flow, has improved the homogeneity and the stability that the molten steel effluented effectively, improves molten steel flow state and temperature distribution in the crystallizer, has improved the wide face molten steel velocity of flow, and the liquid level that reduces meniscus department in the crystallizer is undulant, has improved the drawing speed and has alleviateed immersion nozzle inner wall nodulation, reduces the impact depth of molten steel in the crystallizer. The rotational flow of the molten steel can increase the flow between the molten steel and the inner wall of the submerged nozzle, so that Al is generated2O3And the impurities are not easy to adhere to the inner wall of the water gap, so that the water gap nodulation is reduced, the billet drawing speed is improved, the billet quality is improved, and the billet drawing production efficiency is improved.
Drawings
Fig. 1 is a side view of the spiral-flow type submerged nozzle of the present invention, wherein 2 represents a water outlet;
FIG. 2 is a side planing surface view of a rotational flow steady flow submerged nozzle, wherein 1 is a flow channel inner cavity, 3 is a nozzle flow channel, 4 is a bottom water outlet, and 5 is a flow guide surface;
fig. 3 is an enlarged view of the cross section of the bottom nozzle, and 5 is a flow guide surface.
Detailed Description
The water-saving device comprises a flow channel inner cavity 1, a water outlet 2, a water gap flow channel 3, a bottom water outlet 4 and a flow guide surface 5. Wherein runner inner chamber 1 is circular cross section, leads directly to and links to each other with bottom delivery port 4 along with the mouth of a river bottom, and bottom delivery port 4 cross section is circular, and diameter 10mm uses the mouth of a river axis to set up 3 delivery ports 2 as the centre of a circle, and 2 vertical projections of delivery port are the fillet rectangle, and fillet radius 5mm, rectangle length 20mm, width 10mm set up water conservancy diversion face 5 in delivery port 2 department, and water conservancy diversion face 5 is 30 with section radius contained angle. On the vertical section, a water gap flow channel 3 is arranged at an included angle of 15 degrees along the horizontal axis, and the water gap flow channel 3 penetrates from the water outlet 2 to the flow channel inner cavity 1 along the diameter direction of the water gap section circle.
Example 1
A rotational flow steady flow immersion type water gap mainly comprises a flow channel inner cavity 1, a water outlet 2, a water gap flow channel 3, a bottom water outlet 4 and a flow guide surface 5. Wherein runner inner chamber 1 is circular cross section, leads directly to and links to each other with bottom delivery port 4 along with the mouth of a river bottom, and 4 cross-sections of bottom delivery port are circular, and circular diameter 30mm uses mouth of a river axis to set up 2 delivery ports 2 as the centre of a circle, and 2 vertical projection of delivery port are the fillet rectangle, and fillet radius 5mm, rectangle length 60mm, width 30mm set up water conservancy diversion face 5 in delivery port 2 department, and water conservancy diversion face 5 is 30 with section radius contained angle. On the vertical section, a water gap flow channel 3 is arranged at an included angle of 45 degrees along the horizontal axis, and the water gap flow channel 3 penetrates from the water outlet 2 to the flow channel inner cavity 1 along the diameter direction of the water gap section circle.
Example 2
A rotational flow steady flow immersion type water gap mainly comprises a flow channel inner cavity 1, a water outlet 2 and a water outlet 4 at the bottom of a water gap flow channel 3. Wherein runner inner chamber 1 is circular cross section, leads directly to and links to each other with bottom delivery port 4 along with the mouth of a river bottom, and 4 cross-sections of bottom delivery port are circular, and circular diameter 30mm uses mouth of a river axis to set up 2 delivery ports 2 as the centre of a circle, and 2 vertical projection of delivery port are the fillet rectangle, and fillet radius 2mm, rectangle length 60mm, width 50mm set up water conservancy diversion face 5 in delivery port 2 department, and water conservancy diversion face 5 is 30 with section radius contained angle. On the vertical section, a water gap flow channel 3 is arranged at an included angle of 50 degrees along the horizontal axis, and the water gap flow channel 3 penetrates from the water outlet 2 to the flow channel inner cavity 1 along the diameter direction of the water gap section circle.
Example 3
A rotational flow steady flow immersion type water gap mainly comprises a flow channel inner cavity 1, a water outlet 2, a water gap flow channel 3, a bottom water outlet 4 and a flow guide surface 5. Wherein runner inner chamber 1 is circular cross section, leads directly to and links to each other with bottom delivery port 4 along with the mouth of a river bottom, and 4 cross-sections of bottom delivery port are circular, and circular diameter 10mm uses mouth of a river axis to set up 2 delivery ports 2 as the centre of a circle, and 2 vertical projection of delivery port are the fillet rectangle, and fillet radius 2mm, rectangle length 10mm, width 5mm set up water conservancy diversion face 5 in delivery port 2 department, and water conservancy diversion face 5 is 30 with section radius contained angle. On the vertical section, a water gap flow channel 3 is arranged at an included angle of 60 degrees along the horizontal axis, and the water gap flow channel 3 penetrates from the water outlet 2 to the flow channel inner cavity 1 along the diameter direction of the water gap section circle.
Example 4:
a rotational flow steady flow immersion type water gap mainly comprises a flow channel inner cavity 1, a water outlet 2, a water gap flow channel 3, a bottom water outlet 4 and a flow guide surface 5. Wherein runner inner chamber 1 is circular cross section, leads directly to and links to each other with bottom delivery port 4 along with the mouth of a river bottom, and 4 cross-sections of bottom delivery port are circular, and circular diameter 20mm uses mouth of a river axis to set up 2 delivery ports 2 as the centre of a circle, and 2 vertical projection of delivery port are the fillet rectangle, and fillet radius 2mm, rectangle length 60mm, width 50mm set up water conservancy diversion face 5 in delivery port 2 department, and water conservancy diversion face 5 is 30 with section radius contained angle. On the vertical section, a water gap flow channel 3 is arranged at an included angle of 40 degrees along the horizontal axis, and the water gap flow channel 3 penetrates from the water outlet 2 to the flow channel inner cavity 1 along the diameter direction of the water gap section circle.
Claims (1)
1. A rotational flow steady flow submerged nozzle mainly comprises a flow passage inner cavity (1), water outlets (2), a water passage flow passage (3), a bottom water outlet (4) and a flow guide surface (5), wherein the flow passage inner cavity (1) is a circular cross section and is directly connected with the bottom water outlet (4) along with the bottom of the water passage, the section of the bottom water outlet (4) is circular, the circular diameter range is 5-30mm, 2-6 water outlets (2) are arranged by taking the axis of the water passage as the center of circle, the vertical projection of the water outlets (2) is a rounded rectangle, the radius range of the rounded corner is 2-10mm, the length of the rectangle is 5-80mm, the width of the rectangle is 5-70m, the flow guide surface (5) is arranged at the water outlet (2), the included angle between the flow guide surface (5) and the radius of the section circle is 10-40 degrees, and the, the water gap flow channel (3) penetrates from the water outlet (2) to the flow channel inner cavity (1) along the diameter direction of the water gap section circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922157721.4U CN212144490U (en) | 2019-12-05 | 2019-12-05 | Rotational flow and steady flow submersed nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922157721.4U CN212144490U (en) | 2019-12-05 | 2019-12-05 | Rotational flow and steady flow submersed nozzle |
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| Publication Number | Publication Date |
|---|---|
| CN212144490U true CN212144490U (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922157721.4U Active CN212144490U (en) | 2019-12-05 | 2019-12-05 | Rotational flow and steady flow submersed nozzle |
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| Country | Link |
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| CN (1) | CN212144490U (en) |
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2019
- 2019-12-05 CN CN201922157721.4U patent/CN212144490U/en active Active
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