Adjustable plate strip transverse magnetic induction heating device

Abstract

The utility model relates to an adjustable transverse magnetic induction heating device for a plate strip. The adjustable transverse magnetic induction heating device comprises an induction heating unit, a silicon steel group unit, a cooling water plate unit, a magnetic flux collector unit and a heat insulation plate unit, the induction heating unit is arranged in the heat insulation plate unit; the silicon steel group unit is arranged in the middle area of the induction heating unit and connected with the induction heating unit in an embedded fit mode. The magnetic flux collector unit is arranged on the inlet side of the induction heating unit; and the cooling water plate unit is arranged above the silicon steel group unit and is connected with the silicon steel group unit by adopting a plug-in structure. A special transverse magnetic flux induction heating structure is adopted, and changeable transverse magnetic flux induction uniform and efficient heating is achieved by adjusting the number of silicon steel groups, the number of layers of coils, the position of a magnetic flux collector and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic induction heating, in particular to an adjustable plate strip transverse magnetic induction heating device. Background Art

[0002] Induction heating technology is widely used in the heating treatment of metal plates due to its good controllability, high yield rate and fast heating speed. Its working principle is to use the Faraday electromagnetic induction principle to generate an alternating magnetic field from an alternating current, so that an induced current, i.e. eddy current, is generated inside the heated workpiece, and the Joule heating effect of the eddy current is used to heat the workpiece.

[0003] However, the current transverse flux induction heating device has a complex structural design, which is not conducive to subsequent maintenance and causes damage to various parts during the induction heating process, resulting in a short service life of the transverse flux induction heating device, a cumbersome manufacturing process, high cost, and inability to flexibly adjust metal sheets of different widths. Summary of the invention

[0004] In view of the above problems, the purpose of the utility model is to provide an adjustable plate and strip transverse magnetic induction heating device, which can effectively avoid damage to the transverse magnetic flux induction heating device due to vibration during actual operation, and can shield the magnetic field to prevent the escape of magnetic lines of force, thereby increasing the temperature rise of the metal plate.

[0005] The technical solution adopted by the utility model is as follows:

[0006] The utility model proposes an adjustable plate-strip transverse magnetic induction heating device, comprising an induction heating unit, a silicon steel group unit, a cooling water plate unit, a magnetic flux concentrator unit and a heat insulation plate unit; the induction heating unit is arranged inside the heat insulation plate unit; the silicon steel group unit is arranged in the middle area of ​​the induction heating unit, and is connected to the induction heating unit by an embedded fit; the magnetic flux concentrator unit is arranged at the inlet side of the induction heating unit; the cooling water plate unit is arranged above the silicon steel group unit, and is connected to the silicon steel group unit by a plug-in structure.

[0007] Furthermore, the insulation board unit includes a main insulation board, side insulation boards and an insulation shell; the main insulation board is a U-shaped structure; the side insulation boards are respectively fixedly connected to the front and rear ends of the main insulation board; the insulation shell is correspondingly fixedly connected above the main insulation board.

[0008] Furthermore, the induction heating unit adopts an upper and lower parallel coil structure, and the number of coil layers is 1-3;

[0009] Furthermore, the upper and lower parallel coils are connected to a power supply via a copper busbar in series or parallel connection.

[0010] Furthermore, the upper and lower parallel coils are cooled by cooling water pipes connected in series or in parallel.

[0011] Furthermore, the cross-sectional shape of the upper and lower parallel coils is rectangular, circular, trapezoidal or irregular.

[0012] Furthermore, the cooling water plate unit includes a cooling water plate and a main water pipeline; the cooling water plate is plugged into the top of the silicon steel group unit; the main water pipeline is respectively arranged on both sides of one end of the cooling water plate, and passes through the side insulation plate to be externally connected to the cooling water source.

[0013] Furthermore, the silicon steel group unit includes a silicon steel sheet, a heat sink and a support plate; the support plates are respectively arranged at the front and rear ends of the bottom of the cooling water plate unit; the silicon steel sheet and the heat sink are arranged in sequence and evenly between the support plates at both ends; the bottoms of the silicon steel sheet, the heat sink and the support plate are respectively corresponding to the embedded connection with the induction heating unit, and the tops are respectively corresponding to the plug-in connection with the cooling water plate.

[0014] Furthermore, the magnetic flux concentrator unit includes a magnetic field shielding plate, an energy absorption and vibration reduction mechanism, an iron core, an energy absorption and vibration reduction mechanism fixing plate and an iron core fixing plate; the magnetic field shielding plate is fixed correspondingly on the inlet side of the induction heating unit; the left and right sides of the surface of the magnetic field shielding plate are symmetrically provided with slide grooves; the iron core fixing plate is respectively fixed on the front and rear sides of the iron core; the left and right ends of the iron core fixing plate are respectively fixedly connected in the slide grooves by bolts; the energy absorption and vibration reduction mechanisms are respectively arranged on both sides of the iron core; the energy absorption and vibration reduction mechanism fixing plate is arranged between the energy absorption and vibration reduction mechanism and the magnetic field shielding plate.

[0015] Furthermore, the energy absorption and vibration reduction mechanism is made of foamed aluminum material.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The utility model has a simple and compact structure and uses foamed aluminum as an energy absorption and vibration reduction mechanism, which not only avoids damage to the transverse magnetic flux induction heating device due to vibration during actual operation, but also can shield the magnetic field, prevent the magnetic field lines from escaping, and increase the temperature rise of the metal plate. By adjusting the number of silicon steel groups, the number of coil layers, and the position, structure, and size of the magnetic flux concentrator, uniform and efficient heating of the transverse magnetic flux induction can be achieved under a wide range of width changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0020] Figure 3-4 is a structural schematic diagram of a magnetic flux concentrator unit;

[0021] Figure 5 to Figure 7 It is a schematic diagram of the assembly method of the plug-in silicon steel group;

[0022] Figure 8 is a schematic diagram of the distance D between the flux concentrator and the coil;

[0023] Fig. 9 for Fig.11 It is a schematic diagram of the change of the distance between the magnetic flux concentrator and the coil;

[0024] Figure 12-13 It is a schematic diagram of the arrangement of the metal sheet and the transverse flux induction heating device;

[0025] Fig.14 It is a schematic diagram of a partial cross-sectional structure of the utility model from the side.

[0026] Among them, the figure markings are: 1. induction heating unit; 2. magnetic flux concentrator; 3. insulation board unit; 4. silicon steel group unit; 5. cooling water board; 6. main water pipeline; 7. induction coil cooling water pipe; 8. copper busbar; 9. support plate; 10. bolt; 11. energy absorption and vibration reduction mechanism fixing plate; 12. magnetic field shielding plate; 13. energy absorption and vibration reduction mechanism; 14. iron core; 15. silicon steel sheet; 16. heat sink; 17. metal plate; 18. upper heating unit; 19. lower heating unit; 20. side insulation board; 21. insulation shell; 22. slide groove; 23. screw; 24. main insulation board; 25. iron core fixing plate; 26-connecting plate. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] See attached Figure 1-14 The utility model proposes an adjustable plate-strip transverse magnetic induction heating device, comprising an induction heating unit 1, a silicon steel group unit 4, a cooling water plate unit, a magnetic flux concentrator unit and a heat insulation board unit 3. The induction heating unit 1 is horizontally arranged in the lower area inside the heat insulation board unit 3; the silicon steel group unit 4 is arranged in the middle area of ​​the induction heating unit 1, and the bottom is connected to the induction heating unit 1 by an embedded fit; the magnetic flux concentrator unit is arranged inside the heat insulation board unit 3 and located at the inlet side of the induction heating unit 1; the cooling water plate unit is arranged above the silicon steel group unit 4, and is connected to the silicon steel group unit 4 by a plug-in structure.

[0029] The heat insulation panel unit 3 includes a main heat insulation panel 24, a side heat insulation panel 20 and a heat insulation shell 21; in this embodiment, the main heat insulation panel 24 and the heat insulation shell 21 are both U-shaped structures; the side heat insulation panels 20 are respectively fixedly connected to the front and rear ends of the main heat insulation panel 24; the heat insulation shell 21 is fixedly connected and buckled above the main heat insulation panel 24 by bolts. The main heat insulation panel 24, the side heat insulation panel 20 and the heat insulation shell 21 together form a rectangular shell.

[0030] In this embodiment, the induction heating unit 1 adopts an upper and lower parallel coil structure with 1-3 coil layers; the upper and lower parallel coils are connected to the power supply through a copper bus 8 in series or parallel; the upper and lower parallel coils are cooled by cooling water pipes 7 in series or parallel; the cross-sectional shape of the upper and lower parallel coils is rectangular, circular, trapezoidal, or irregular, etc.

[0031] The cooling water plate unit includes a cooling water plate 5 and a main water pipe 6; the cooling water plate 5 is plugged into the top of the silicon steel group unit 4; the main water pipe 6 is respectively installed on the left and right sides of one end of the cooling water plate 5, and the main water pipes 6 on both sides pass through the side insulation plate 20 and are externally connected to the cooling water source, respectively used for water inlet and water return.

[0032] The silicon steel group unit 4 includes a silicon steel sheet 15, a heat sink 16 and a support plate 9; the support plates 9 are respectively arranged at the front and rear ends of the bottom of the cooling water plate 5, and the support plates 9 are respectively fixed to the main insulation plate 24 and the insulation shell 21 by bolts; the silicon steel sheet 15 and the heat sink 16 are uniformly arranged in sequence between the support plates 9 at both ends; the bottoms of the silicon steel sheet 15, the heat sink 16 and the support plate 9 are respectively corresponding to the embedded connection with the induction heating unit 1, and the tops are respectively corresponding to the plug-in connection with the cooling water plate 5.

[0033] The number of the silicon steel group units 4 can be adjusted according to the induction coils of different lengths, and is generally set to 1-3 groups. The groups can be fastened and connected by screws 23 to be assembled into a whole. The combination of different numbers of silicon steel group units 4 can achieve matching with the lengths of induction coils of different sizes. The structure is simple and compact, and meets the heating requirements of metal plates 17 of different sizes.

[0034] The silicon steel sheet 15 is a multi-layer ultra-thin silicon steel laminated structure; the heat sink 16 is a thin sheet structure; the size specification of the silicon steel sheet 15 group is 3 to 5 mm smaller than the heat sink; the silicon steel sheet 15 group is a silicon steel sheet laminated structure with a unit thickness of 100 mm standard thickness, and can be combined with the heat sink 16 and the support plate 9 in different types.

[0035] The magnetic flux concentrator unit 2 includes a magnetic field shielding plate 12, an energy absorption and vibration reduction mechanism 13, an iron core 14, an energy absorption and vibration reduction mechanism fixing plate 11 and an iron core fixing plate 25; the magnetic field shielding plate 12 is horizontally fixed on the inlet side of the induction heating unit 1, and its overall structure is concave; the iron core 14 is embedded in the concave area of ​​the magnetic field shielding plate 12; the left and right sides of the surface of the magnetic field shielding plate 12 are symmetrically provided with slide grooves 22; the magnetic field shielding plate 12 is fastened to the connecting plate 26 by bolts; the connecting plate 26 is connected to the heat insulation shell 21 by bolts; the iron core fixing plate 25 is respectively fixed to the front and rear sides of the iron core 14 in parallel by bolts; the left and right ends of the iron core fixing plate 25 are respectively fixed in the slide grooves 22 on both sides by bolts 10; the distance D of the magnetic flux concentrator unit 2 relative to the induction coil can be flexibly adjusted according to the width of the metal plate 17, and the adjustment can be achieved by adjusting the position of the iron core fixing plate 25 relative to the slide groove 22.

[0036] The iron core 14, the energy absorption and vibration reduction mechanism 13 and the energy absorption and vibration reduction mechanism fixing plate 11 are all arranged in the concave area of ​​the magnetic field shielding plate 12; a group of energy absorption and vibration reduction structures 13 are fixedly arranged on both sides of the iron core 14, and the energy absorption and vibration reduction mechanism 13 and the energy absorption and vibration reduction mechanism fixing plate 11 are fixed in the gap between the iron core 14 and the magnetic field shielding plate 12 in sequence by welding; wherein the energy absorption and vibration reduction mechanism 13 is a porous energy absorption material such as foam aluminum. In addition to its impact resistance and energy absorption and buffering functions, the electromagnetic shielding efficiency of the foam aluminum increases rapidly with the increase of the electromagnetic frequency, preventing the magnetic field lines from escaping and increasing the magnetic induction intensity; and the thermal conductivity of the foam aluminum is very low, and it is an excellent thermal insulation material, which prevents the metal plate 17 from being damaged due to excessive temperature of the parts due to heat radiation during the induction heating process.

[0037] The working principle of the present invention is as follows: alternating current generates an alternating magnetic field around the induction heating unit 1 (i.e., the coil). When the metal plate 17 is placed in this alternating magnetic field, according to Faraday's law of electromagnetic induction, an induced electromotive force is generated inside the metal plate 17, thereby generating an induced current, and the induced current forms a closed loop. Due to the resistance of the metal plate 17, its temperature rises rapidly, thereby achieving heating of the metal plate 17.

[0038] Matters not described in detail in this utility model are known technologies.

[0039] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. An adjustable strip transverse magnetic induction heating device, characterized in that: The device comprises an induction heating unit, a silicon steel group unit, a cooling water plate unit, a magnetic flux concentrator unit and a heat insulation board unit; the induction heating unit is arranged inside the heat insulation board unit; the silicon steel group unit is arranged in the middle area of ​​the induction heating unit and is connected to the induction heating unit by an embedded fit; the magnetic flux concentrator unit is arranged at the inlet side of the induction heating unit; the cooling water plate unit is arranged above the silicon steel group unit and is connected to the silicon steel group unit by a plug-in structure.

2. The adjustable strip transverse magnetic induction heating device according to claim 1, characterized in that: The insulation board unit includes a main insulation board, side insulation boards and an insulation shell; the main insulation board is a U-shaped structure; the side insulation boards are respectively fixedly connected to the front and rear ends of the main insulation board; the insulation shell is correspondingly fixedly connected above the main insulation board.

3. The adjustable strip transverse magnetic induction heating device according to claim 2, characterized in that: The induction heating unit adopts an upper and lower parallel coil structure, and the number of coil layers is 1-3 layers.

4. The adjustable strip transverse magnetic induction heating device according to claim 3, characterized in that: The upper and lower parallel coils are connected to a power supply via a copper busbar in series or parallel connection.

5. The adjustable strip transverse magnetic induction heating device according to claim 3, characterized in that: The upper and lower parallel coils are cooled by cooling water pipes connected in series or in parallel.

6. The adjustable strip transverse magnetic induction heating device according to claim 3, characterized in that: The cross-sectional shape of the upper and lower parallel coils is rectangular, circular, trapezoidal or special-shaped.

7. The adjustable strip transverse magnetic induction heating device according to claim 2, characterized in that: The cooling water plate unit comprises a cooling water plate and a main water pipeline; the cooling water plate is plugged on the top of the silicon steel group unit; the main water pipeline is respectively arranged on both sides of one end of the cooling water plate, and passes through the side insulation plate to be externally connected to the cooling water source.

8. The adjustable strip transverse magnetic induction heating device according to claim 7, characterized in that: The silicon steel group unit includes silicon steel sheets, heat sinks and support plates; the support plates are respectively arranged at the front and rear ends of the bottom of the cooling water plate unit; the silicon steel sheets and heat sinks are arranged in sequence and evenly between the support plates at both ends; the bottoms of the silicon steel sheets, heat sinks and support plates are respectively corresponding to embedded connections with the induction heating units, and the tops are respectively corresponding to plug-in connections with the cooling water plates.

9. The adjustable strip transverse magnetic induction heating device according to claim 8, characterized in that: The magnetic flux concentrator unit includes a magnetic field shielding plate, an energy absorption and vibration reduction mechanism, an iron core, an energy absorption and vibration reduction mechanism fixing plate and an iron core fixing plate; the magnetic field shielding plate is fixed to the inlet side of the induction heating unit; the left and right sides of the surface of the magnetic field shielding plate are symmetrically provided with slide grooves; the iron core fixing plate is respectively fixed to the front and back sides of the iron core; the left and right ends of the iron core fixing plate are respectively fixed in the slide grooves by bolts; the energy absorption and vibration reduction mechanisms are respectively arranged on both sides of the iron core; the energy absorption and vibration reduction mechanism fixing plate is arranged between the energy absorption and vibration reduction mechanism and the magnetic field shielding plate.

10. The adjustable strip transverse magnetic induction heating device according to claim 9, characterized in that: The energy absorbing and vibration reducing mechanism is made of foamed aluminum material.

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