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CN-224203933-U - Inductor and roller type electromagnetic stirring system

CN224203933UCN 224203933 UCN224203933 UCN 224203933UCN-224203933-U

Abstract

The utility model provides an inductor and a roller type electromagnetic stirring system. The inductor comprises an iron core and a winding wound on the outer side of the iron core, wherein the iron core comprises a first iron core material layer and a second iron core material layer wound on the outer side of the first iron core material layer, the first iron core material layer and the second iron core material layer are fixed through fasteners, so that the iron core is formed, and the magnetic conductivity of the first iron core material layer is larger than that of the sheet-shaped structure.

Inventors

  • LAN FANG
  • YU YANYAN
  • XIAO HONG
  • LI AIWU
  • YI BING
  • LI WEIHONG
  • LI YANZHONG
  • JIANG TAO
  • MA ZHIMIN
  • FENG YANGYANG

Assignees

  • 湖南中科电气股份有限公司

Dates

Publication Date
20260505
Application Date
20250527

Claims (10)

  1. 1. The inductor comprises an iron core (11) and a winding (12) wound on the outer side of the iron core (11), and is characterized in that the iron core (11) comprises a first iron core material layer (115) and a second iron core material layer (111) wound on the outer side of the first iron core material layer (115), and the first iron core material layer (115) and the second iron core material layer (111) are fixed through a fastener (112) so as to form the iron core (11); The hardness of the first core material layer (115) is smaller than that of the second core material layer (111), and the magnetic permeability of the first core material layer (115) is larger than that of the second core material layer (111).
  2. 2. The inductor according to claim 1, wherein the second core material layer (111) forms a ring-like structure surrounding the first core material layer (115).
  3. 3. An inductor according to claim 1, characterized in that the inductor further comprises a magnetic shielding structure (13) arranged outside the coil; the magnetic shielding structure (13) is an arc-shaped structure forming an opening on a section perpendicular to the axial direction of the iron core (11).
  4. 4. The inductor according to claim 3, wherein the second core material layer (111) is a U-shaped structure wound around a portion of the first core material layer (115), and an opening of the U-shaped structure is directed to an opening of the magnetic shielding structure (13) such that the second core material layer (111) is disposed close to the opening of the magnetic shielding structure (13), and a portion of the first core material layer (115) not wound around the second core material layer (111) forms an outer wall of the core (11).
  5. 5. The inductor according to claim 1, wherein the second core material layer (111) is formed of sheet-like structures (111A) stacked in the radial direction, each sheet-like structure (111A) being fixed to the first core material layer (115) by means of a fastener (112).
  6. 6. The inductor of claim 1, wherein the material of the first core material layer (115) is an amorphous alloy and the material of the second core material layer (111) is silicon steel.
  7. 7. The inductor according to any one of claims 1 to 6, characterized in that first mounting plates (113) are arranged at both ends of the iron core (11) in the radial direction, second mounting plates (114) are arranged at both ends of the iron core (11) in the axial direction, the iron core (11) is clamped between the two first mounting plates (113) and between the two second mounting plates (114), and the iron core (11) is fixedly connected with both the first mounting plates (113) and the second mounting plates (114).
  8. 8. The inductor according to claim 7, characterized in that the core (11) and the first mounting plate (113) are fixed by means of the fastening element (112), and that the core (11) and the second mounting plate (114) are welded to each other.
  9. 9. The inductor according to claim 7, wherein the first mounting plate (113) is made of carbon steel and the second mounting plate (114) is made of stainless steel.
  10. 10. A roller type electromagnetic stirring system comprises a base (10) and a roller sleeve (3) rotating relative to the base (10), and is characterized in that an inductor (1) according to any one of claims 1-9 is arranged on the inner side of the roller sleeve (3), and the inductor (1) is fixedly connected with the base (10).

Description

Inductor and roller type electromagnetic stirring system Technical Field The utility model relates to an inductor and a roller type electromagnetic stirring system, and belongs to the technical field of metal continuous casting equipment. Background The roller type electromagnetic stirring system is arranged in a secondary cooling zone (called a secondary cooling zone for short). In the roller type electromagnetic stirring system, roller sleeves are arranged on two sides of a casting blank, and the roller sleeves rotate to drive the casting blank to move forwards in the moving direction. The stirring in the secondary cooling zone can enlarge the equiaxed crystal zone, improve center segregation and reduce center porosity and cracks. The main body of the roller type electromagnetic stirring system is an inductor (electromagnetic inductor) positioned on the inner side of the roller sleeve, and the components for generating the magnetic field are a coil and an iron core. The iron core acts as a prescribed route for magnetic flux (magnetic lines of force), and the route through which the magnetic lines of force are concentrated is called a magnetic circuit. The magnetic circuit is formed by ferromagnetic substances, similar to the circuit formed by a material with very high conductivity (aluminum, copper) or the like for routing the current. When the coil is electrified, a magnetic field is generated around the coil, so that stirring of molten steel in a casting blank is realized. In the patent application with the application number of CN200710085940.5 and the name of 'high magnetic field slab two-cold area electromagnetic stirring roller', a magnetic shielding structure is arranged on the outer side of the coil, and the magnetic shielding structure is an arc-shaped structure forming an opening, so that the opening orientation area of the arc-shaped structure can be used as a magnetic field acting area, the magnetic field can be prevented from leaking from the direction of acting never, the magnetic field intensity of a working surface is greatly increased, and the electromagnetic stirring effect is improved. However, since the magnetic shielding structure is generally made of metal materials, eddy currents are generated under the action of the alternating magnetic field, so that extra energy loss is caused, the efficiency of the winding is reduced, and the electromagnetic stirring effect is further affected. Disclosure of utility model The utility model provides an inductor aiming at the problems that in the prior art, a magnetic shielding structure of a metal material can generate eddy current under the action of an alternating magnetic field, so that extra energy loss is caused, the efficiency of a winding is reduced, and the electromagnetic stirring effect is influenced. In order to solve the technical problems, the technical scheme adopted by the utility model is that the inductor comprises an iron core (11) and a winding (12) wound on the outer side of the iron core (11), wherein the iron core (11) comprises a first iron core material layer (115) and a second iron core material layer (111) wound on the outer side of the first iron core material layer (115), and the first iron core material layer (115) and the second iron core material layer (111) are fixed through a fastener (112) so as to form the iron core (11); The hardness of the first core material layer (115) is smaller than that of the second core material layer (111), and the magnetic permeability of the first core material layer (115) is larger than that of the second core material layer (111). Through the arrangement, the second iron core material layer with larger hardness and smaller magnetic conductivity is wound on the outer side of the first iron core material layer with smaller hardness and larger magnetic conductivity, so that the stability of the whole iron core structure can be ensured, and the magnetic conductivity of the whole iron core is improved. Moreover, the first core material layer and the second core material layer are fixedly connected through the fasteners. In the above technical solution, the second core material layer (111) forms a ring structure surrounding the first core material layer (115). In the technical scheme, the inductor further comprises a magnetic shielding structure (13) arranged outside the coil; the magnetic shielding structure (13) is an arc-shaped structure forming an opening on a section perpendicular to the axial direction of the iron core (11). According to the technical scheme, the second iron core material layer (111) is of a U-shaped structure wound on the outer side of the part of the first iron core material layer (115), an opening of the U-shaped structure faces to an opening of the magnetic shielding structure (13), the second iron core material layer (111) is arranged close to the opening of the magnetic shielding structure (13), and the part, which is not wound by the second iron core materia