CN205110721U - Inductor of immersion nozzle electromagnetic stirring device - Google Patents
Inductor of immersion nozzle electromagnetic stirring device Download PDFInfo
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- CN205110721U CN205110721U CN201520917023.9U CN201520917023U CN205110721U CN 205110721 U CN205110721 U CN 205110721U CN 201520917023 U CN201520917023 U CN 201520917023U CN 205110721 U CN205110721 U CN 205110721U
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- inductor
- coil
- iron core
- submersed nozzle
- mixing apparatus
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Abstract
The utility model discloses an inductor of immersion nozzle electromagnetic stirring device installs in immersion nozzle 6's the outside, and its inductor adopts the U -shaped structure, the inductor includes the iron core 2 and multiunit coil 3 of anodontia U -shaped, the coiling of ke laimu wire winding form is pressed respectively outside iron core 2 to multiunit coil 3, multiunit coil 3 is about the central line L symmetrical arrangement of iron core 2, each number of turns of organizing the coil is the same, and every group coil 3 is gone up each and is led to the alternating current who has a phase bit, frequency and current strength. The utility model discloses an inductor designs into the U -shaped, and the opening of U -shaped inductor carries out the inspection of crystallizer liquid level for on -the -spot workman, chooses the sediment and add covering slag etc. And brought conveniently, changes minimumly to on -the -spot technology. Ke laimu winding form is adopted in the wire winding, and the shared height dimensions of winding space is little, takes the electromagnetic stirring device of tooth, and in limited space, the mounting dimension who produces same magnetic field required is little, more is suitable for the use operating mode of immersion nozzle electromagnetism whirl device.
Description
Technical field
The utility model belongs to continuous casting technology field, is specifically related to a kind of inductor of submersed nozzle electromagnetic mixing apparatus.
Background technology
Along with the application and development of continuous casting technology, particularly user improves day by day to the requirement of steel product quality and the keen competition of international market, the quality of continuous casting billet more and more comes into one's own, the strict cleanliness factor controlling molten steel, reduces the work that casting blank defect has become important in continuous casting production.Continuous casting practice shows, current electromagnetic agitating technology has become the routine configuration of conticaster, is also improve continuous casting billet quality, one of stabilizing continuous casting operation and the key technology that boosts productivity.According to the difference of electromagnetic agitation installation site, current electromagnetic agitation classification is roughly divided into: M-EMS, two chill space electromagnetic stirrings, solidification end electromagnetic agitation.Wherein M-EMS, the surface of improving strand larger because of equiax crystal district and subcutaneous better quality, shell growth evenly, effectively can improve the features such as molten steel core quality and be widely used.But M-EMS is arranged on crystallizer zone, and due to crystallizer be made up of the copper coin of water flowing, the magnetic field of M-EMS, by the shielding of copper coin, produces very large decay, has a strong impact on effect and the efficiency of electromagnetic field.
In casting process, molten steel is injected in crystallizer by the intrusive mood mouth of a river.Submersed nozzle is the cast refractory sleeve being arranged on tundish bottom in continuous casting equipment and inserting below crystallizer molten steel surface.Submersed nozzle, while protecting steel stream, preventing secondary oxidation of steel, also changes the flow regime of molten steel in crystallizer, and in continuous cast mold, flowing also has significant impact to continuous casting billet quality and output.Because the bias current of molten steel in submersed nozzle causes the molten steel discharge rate in each hole that spues unequal, cause the fluctuation of liquid level in crystallizer, and the severe degree of liquid fluctuating can be aggravated along with the raising of pulling speed of continuous casting.
Basic research shows, move on M-EMS installation site is in casting process, that is: magnetic stirrer is arranged on region, the intrusive mood mouth of a river, a rotating excitation field is applied at continuous casting immersion outlet place, the molten steel in the intrusive mood mouth of a river is made to produce rotational flow, effectively can improve uniformity and stability that the mouth of a river goes out stream, improve flow regime and Temperature Distribution in crystallizer, reduce crystallizer menisci liquid fluctuating.But the field working conditions in region, the intrusive mood mouth of a river and technological operation have very strict requirement to electromagnetic mixing apparatus profile and setting height(from bottom) and mounting means.As: the one two flap-type submersed nozzle electromagnetic eddy flow device that patent CN203956040U mentions; though solve open the initial stage of watering and latter stage electromagnetic eddy flow device installation and removal; but this device takes up space larger, inconvenience is brought to the hand inspection of liquid level in crystallizer and the interpolation of covering slag.
For these reasons, must redesign mouth of a river electromagnetic mixing apparatus, the performance requirement of continuous casting electromagnetic eddy flow can be met, larger impact not produced on existing continuous casting process again.
Utility model content
The technical problem that the utility model solves is; for electromagnetic mixing apparatus Problems existing in practical technique at the existing mouth of a river; a kind of inductor of submersed nozzle electromagnetic mixing apparatus is provided; under the condition not changing casting apparatus; the inductor design of electromagnetic mixing apparatus is become U-shaped, can the interpolation carrying out artificial level detection and covering slag online be facilitated.
For realizing above object, the technical solution adopted in the utility model is as follows:
An inductor for submersed nozzle electromagnetic mixing apparatus, is arranged on the outside of submersed nozzle 6, and described inductor adopts U-shaped structure; Inductor comprises the iron core 2 of anodontia U-shaped and many group coils 3; Described many group coils 3 are wound in outside iron core 2 by Gramer's coiling form respectively; Many groups coil 3 is arranged symmetrically with about the centre line L of iron core 2; The number of turn of each group of coil is identical, often organizes alternating current coil 3 being connected with a phase bit, frequency and current strength.
The inductor of submersed nozzle electromagnetic mixing apparatus of the present utility model, cooling can adopt outer cold or interior cold mode; Outer air-cooled structure is: in the housing 1 that the U-shaped that described inductor is placed on size shape adaptation is closed, housing 1 is inner chamber hollow-core construction, and interior cavity circulation has cooling water; Inner-cooling structure is: many group coils 3 adopt hollow copper tubing structure, and in hollow copper tubing, water flowing cools.Housing plays structural shielding effect to equipment simultaneously.
The inductor of submersed nozzle electromagnetic mixing apparatus of the present utility model, also comprise the inner magnetic screen device 4 with high conductivity and the external magnetism shielding device 5 of C shape or U-shaped structure, inner magnetic screen device 4 is arranged between iron core 2 and coil 3, and external magnetism shielding device 5 is arranged on outside coil; The opening of inner magnetic screen device 4 and external magnetism shielding device 5 is towards the working face of iron core.
Total group of number of note coil 3 to be MN, M be more than or equal to 2 positive integer, N be more than or equal to 1 positive integer; The described AC current phase often organizing coil meets following relation: often organize the electric current that adjacent windings 3 passes to out of phase respectively, and institute's galvanization phase difference is identical between adjacent windings, N group coil forms a complete phase cycling, and a phase cycling forms a magnetic pole; Inductor forms M magnetic pole altogether; Submersed nozzle position must just to the boundary of two magnetic poles.
Described iron core 2 forms by silicon steel sheet is stacked, insulate between silicon steel sheet and outside iron core.
Total group of number of described coil 3 is between 2 ~ 20 groups.
Described coil 3 of often organizing has 18 ~ 50 circle coils.
Beneficial effect:
1, inductor design of the present utility model becomes U-shaped, the opening of U-shaped inductor, carries out mold liquid level inspection, chooses slag and add covering slag etc. bringing conveniently to field worker, changes minimum to site technique.
2, the utility model coiling adopts Gramer's winding configuration, height dimension shared by winding space is little, more toothed electromagnetic mixing apparatus, in limited space, produce the same installation dimension needed for magnetic field little, be more suitable for the applying working condition of submersed nozzle electromagnetic eddy flow device.
3, C shape of the present utility model or U-shaped magnetic shielding device, the leakage field greatly reducing inductor non-working surface and the interference brought the electrical equipment of continuous casting platform periphery sensitivity, saved electric energy.
4, by the magnetic Circuit Design described in utility model, what produce in submersed nozzle is rotating excitation field and penetrates the molten steel in the mouth of a river, and the electromagnetic force provided is larger.
In sum, the U-shaped inductor of electromagnetic eddy flow device of the present utility model neither affects existing continuous casting process, effectively can control again the mouth of a river and Mold flowing, effectively improve the quality of strand.The utility model generally can be applicable to existing square billet, circle base and slab caster.
Accompanying drawing explanation
Fig. 1 is the utility model iron core and winding winding structure schematic diagram;
Fig. 2 is the center line schematic diagram of the utility model iron core;
Fig. 3 is the utility model magnetic circuit Movement in Magnetic Field and submersed nozzle molten steel motion schematic diagram;
Fig. 4 is the utility model core structure schematic diagram;
Fig. 5 is the utility model sectional view;
Description of reference numerals: 1, housing, 2, iron core, 3, coil, 4, inner magnetic screen device, 5, external magnetism shielding device, 6, submersed nozzle, 7, molten steel.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As Figure 1-3, Fig. 1 is the utility model iron core and winding winding structure schematic diagram, and Fig. 2 is the center line schematic diagram of the utility model iron core; Wherein iron core 5 adopts anodontia U-shaped structure, and coil 3 adopts Gramer's winding configuration, and many group coils 3 are arranged symmetrically with about the centre line L of iron core 2; The number of turn of each group of coil is identical, often organizes alternating current coil 3 being connected with a phase bit, frequency and current strength; In the housing 1 that the U-shaped that the inductor that iron core 5 and coil 3 are formed is placed on size shape adaptation is closed; The described AC current phase often organizing coil meets following relation: often organize the electric current that adjacent windings 3 passes to out of phase respectively, and institute's galvanization phase difference is identical between adjacent windings, N group coil forms a complete phase cycling, and a phase cycling forms a magnetic pole; Inductor forms M magnetic pole altogether; Submersed nozzle position is just to the boundary of two magnetic poles.Fig. 3 is the utility model magnetic circuit Movement in Magnetic Field and submersed nozzle molten steel motion schematic diagram, and wherein submersed nozzle is arranged in U-shaped inductor, and position is just to the boundary of two magnetic poles.Fig. 4 is the utility model core structure schematic diagram, and U-iron core is that high-permeability material silicon steel sheet, electrical pure iron etc. build up, and insulate between silicon steel sheet and outside iron core.
Fig. 5 is the utility model sectional view, comprises inner magnetic screen device 4 and external magnetism shielding device 5.Described inner magnetic screen device 4 is arranged between iron core 2 and coil 3.Described external magnetism shielding device 5 is arranged on outside coil 3.Inside and outside magnetic shielding device is all processed by the copper or aluminum with high conductivity, and thickness is 10-30mm; Present C font or U-shaped, be arranged on the non-working surface of agitator.Described housing 1 is enclosed shape structure, plays structural shielding effect to equipment.And described housing 1 be inner chamber hollow-core construction, have cooling water circulation to flow in inner chamber and cool.
Claims (7)
1. an inductor for submersed nozzle electromagnetic mixing apparatus, is arranged on the outside of submersed nozzle (6), it is characterized in that, described inductor adopts U-shaped structure; Inductor comprises the iron core (2) of U-shaped and organizes coil (3) more; Organize coil (3) described more and be wound in iron core (2) outward by Gramer's coiling form respectively; Organize coil (3) to be arranged symmetrically with about the centre line L of iron core (2) more; The number of turn of each group of coil is identical, often organizes alternating current coil (3) being connected with a phase bit, frequency and current strength.
2. the inductor of submersed nozzle electromagnetic mixing apparatus according to claim 1, it is characterized in that, in the housing (1) that the U-shaped that described inductor is arranged on size shape adaptation is closed, housing (1) is inner chamber hollow-core construction, and interior cavity circulation has cooling water.
3. the inductor of submersed nozzle electromagnetic mixing apparatus according to claim 1, it is characterized in that, also comprise inner magnetic screen device (4) and the external magnetism shielding device (5) of C shape or U-shaped structure, inner magnetic screen device (4) is arranged between iron core (2) and coil (3), and external magnetism shielding device (5) is arranged on outside coil; The opening of inner magnetic screen device (4) and external magnetism shielding device (5) is towards the working face of iron core.
4. the inductor of submersed nozzle electromagnetic mixing apparatus according to claim 1, is characterized in that, total group of number of note coil (3) to be MN, M be more than or equal to 2 positive integer, N be more than or equal to 1 positive integer; The described AC current phase often organizing coil meets following relation: often organize the electric current that adjacent windings (3) passes to out of phase respectively, and institute's galvanization phase difference is identical between adjacent windings, N group coil forms a complete phase cycling, and a phase cycling forms a magnetic pole; Inductor forms M magnetic pole altogether; Submersed nozzle position must just to the boundary of two magnetic poles.
5. the inductor of submersed nozzle electromagnetic mixing apparatus according to claim 1, is characterized in that, described iron core (2), forms, insulate between silicon steel sheet and outside iron core by silicon steel sheet is stacked.
6. the inductor of submersed nozzle electromagnetic mixing apparatus according to claim 1, is characterized in that, total group of number of described coil (3) is between 2 ~ 20 groups.
7. the inductor of the submersed nozzle electromagnetic mixing apparatus according to any one of claim 1-6, is characterized in that, described coil (3) of often organizing has 18 ~ 50 circle coils.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520917023.9U CN205110721U (en) | 2015-11-17 | 2015-11-17 | Inductor of immersion nozzle electromagnetic stirring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520917023.9U CN205110721U (en) | 2015-11-17 | 2015-11-17 | Inductor of immersion nozzle electromagnetic stirring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205110721U true CN205110721U (en) | 2016-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520917023.9U Active CN205110721U (en) | 2015-11-17 | 2015-11-17 | Inductor of immersion nozzle electromagnetic stirring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205110721U (en) |
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2015
- 2015-11-17 CN CN201520917023.9U patent/CN205110721U/en active Active
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |