Induction coil of medium-frequency electric furnace

Abstract

The utility model relates to the technical field of electric furnace assemblies, and discloses a medium-frequency electric furnace induction coil which comprises a fixed frame. The coil mechanism is arranged on the inner side of the fixed frame, the fixed frame comprises two end face round frames which are symmetrically arranged up and down, a group of inner reinforcing strips are fixedly connected between the opposite ends of the inner sides of the two end face round frames, and a group of outer reinforcing strips are fixedly connected between the opposite ends of the outer sides of the two end face round frames. The double-layer fixing frame structure is arranged on the outer side of the coiled copper pipe, the inner side of the coiled copper pipe structure is fixedly connected with the inner side reinforcing strips of the fixing frame, and the outer side of the coiled copper pipe structure is fixedly connected with the inner side reinforcing strips of the fixing frame. The reinforcing strip structures on the inner side and the outer side play a role in reinforcing the structure of the coiled copper pipe structure, and after the coiled copper pipe works in a high-pressure and high-heat environment for a long time, the coiled copper pipe is coiled to form a coiled structure and is not prone to denaturation and damage in the environment.

Description

Technical Field

[0001] The utility model relates to the technical field of electric furnace components, in particular to an induction coil of an intermediate frequency electric furnace. Background Art

[0002] The induction coil of an intermediate frequency electric furnace is an important component of the intermediate frequency electric furnace. When intermediate frequency current passes through, the induction coil generates a strong alternating electromagnetic field, causing induced current to be generated inside the metal material in the furnace, thereby realizing the heating of the metal. Its design and performance directly affect the heating efficiency and power factor of the intermediate frequency electric furnace.

[0003] The existing induction coils of intermediate frequency electric furnaces still have the following problems when in use: They are usually made of copper tubes wound, with good electrical conductivity and thermal conductivity, and generally have a circular or rectangular shape, designed according to different electric furnace specifications and heating requirements. However, usually only one fixed frame is provided on the outer side of the coiled copper tube. Since the coiled copper tube usually works in a high-pressure and high-temperature environment for a long time, the coiled structure formed by the coiled copper tube is extremely prone to deformation and damage in this environment. Summary of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides an induction coil of an intermediate frequency electric furnace, which solves the problems put forward in the background art.

[0006] (II) Technical Solutions

[0007] To achieve the above object, the utility model provides the following technical solution: An induction coil of an intermediate frequency electric furnace, comprising a fixed frame; a coil mechanism disposed inside the fixed frame, the fixed frame includes two end face circular frames arranged symmetrically up and down, a group of inner reinforcing bars are fixedly connected between the opposite ends inside the two end face circular frames, a group of outer reinforcing bars are fixedly connected between the opposite ends outside the two end face circular frames, the coil mechanism includes a coiled copper tube fixedly disposed between a group of inner reinforcing bars and a group of outer reinforcing bars, a group of the inner reinforcing bars are arranged at equal angles, and the outer surfaces of the inner sides of the plurality of inner reinforcing bars are fixedly connected to the outer surface of the inner side of the coiled copper tube, a group of the outer reinforcing bars are multiple and arranged at an angle, and the inner surfaces of the plurality of outer reinforcing bars are fixedly connected to the outer surface of the outer side of the coiled copper tube.

[0008] As a further scheme of the utility model: Through holes for the ends of the coiled copper tube to pass through are provided in two of the outer reinforcing bars at one end, a strip-shaped groove is provided between the inner and outer side walls in the middle of the inner reinforcing bar, and a plurality of through grooves are provided at equal distances from top to bottom between the inner and outer side walls of the outer reinforcing bar.

[0009] As a further solution of the utility model: Two connecting frames are fixedly connected in a front-back symmetric manner between the outer side walls of the other ends of the two end face circular frames. Two mounting grooves are symmetrically arranged up and down between the two side walls of the connecting frame. One hanger is fixedly connected to each of the two ends of the top wall of the upper end face circular frame. One threaded connection seat is fixedly connected to each of the front and rear ends of the top wall of the upper end face circular frame. Four support blocks are fixedly connected to the bottom wall of the lower end face circular frame at equal angles. The bottom wall of the support block is fixedly connected to the base, and two mounting holes are arranged between the upper and lower side walls of the base.

[0010] As a further solution of the utility model: A flow guide pipe is fixedly connected to the end of the coiled copper pipe. A connecting flange is fixedly connected to the end of the flow guide pipe away from the coiled copper pipe. A plurality of connecting holes are arranged at equal angles between the front and rear side walls of the connecting flange.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. In the utility model, a double-layer fixed frame structure is arranged outside the coiled copper pipe. The inner reinforcing strip of the fixed frame is fixedly connected to the inner side of the coiled copper pipe structure, and the inner reinforcing strip of the fixed frame is fixedly connected to the outer side of the coiled copper pipe structure. The reinforcing strip structures on the inner and outer sides play a role in strengthening the structure of the coiled copper pipe structure. After the coiled copper pipe works in a high-pressure and high-temperature environment for a long time, the coiled structure formed by the copper pipe is not easily deformed and damaged in this environment.

[0013] 2. In the utility model, the fixed frame structure adopts a weight-reducing and auxiliary heat-dissipating structure design. A long strip-shaped groove is arranged in the middle of the inner reinforcing strip of the fixed frame, and a plurality of through grooves are arranged at equal distances from top to bottom on the outer reinforcing strip of the fixed frame. In addition to strengthening the structure of the coiled copper pipe, it can also play a role in assisting the heat dissipation of the coiled copper pipe, and at the same time play a role in reducing the weight of the overall intermediate frequency electric furnace induction coil. Description of the Drawings

[0014] Figure 1 Is the overall three-dimensional view of the utility model Figure 1 ;

[0015] Figure 2 Is the overall three-dimensional view of the utility model Figure 2 ;

[0016] Figure 3 Is the three-dimensional view of the fixed frame of the utility model;

[0017] Figure 4 Is the three-dimensional view of the coil mechanism of the utility model.

[0018] In the figure: 1, fixed frame; 2, coil mechanism; 11, end face circular frame; 12, inner reinforcement bar; 13, outer reinforcement bar; 14, strip-shaped groove; 15, through groove; 16, connecting frame; 17, installation groove; 18, hanging frame; 19, threaded connection seat; 110, support block; 111, base; 112, installation hole; 21, coiled copper tube; 22, diversion tube; 23, connecting flange; 24, connecting hole. Detailed implementation mode

[0019] The following further describes in detail the implementation mode of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0020] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] Please refer to Figures 1 to 4, in the embodiment of the present utility model, an intermediate frequency electric furnace induction coil includes a fixed frame 1; a coil mechanism 2 is arranged inside the fixed frame 1. The fixed frame 1 includes two end face circular frames 11 arranged symmetrically up and down. A group of inner reinforcing bars 12 are fixedly connected between the opposite ends inside the two end face circular frames 11. A group of outer reinforcing bars 13 are fixedly connected between the opposite ends outside the two end face circular frames 11. The coil mechanism 2 includes a coiled copper pipe 21 fixedly arranged between a group of inner reinforcing bars 12 and a group of outer reinforcing bars 13. A group of inner reinforcing bars 12 are arranged at equal angles, and the outer surfaces of the plurality of inner reinforcing bars 12 are fixedly connected to the outer surface of the inner side of the coiled copper pipe 21. A group of outer reinforcing bars 13 are multiple and arranged at an angle, and the inner surfaces of the plurality of outer reinforcing bars 13 are fixedly connected to the outer surface of the outer side of the coiled copper pipe 21. A double-layer fixed frame 1 structure is arranged outside the coiled copper pipe 21. The inner reinforcing bars of the fixed frame 1 are fixedly connected to the inner side of the coiled copper pipe 21 structure, and the inner reinforcing bars of the fixed frame 1 are fixedly connected to the outer side of the coiled copper pipe 21 structure. The reinforcing bar structures on the inner and outer sides play a role in strengthening the structure of the coiled copper pipe 21. After the coiled copper pipe 21 works in a high-pressure and high-temperature environment for a long time, the coiled structure formed by the coiled copper pipe is not easily deformed and damaged in this environment.

[0023] Through holes for the ends of the coiled copper pipe 21 to pass through are provided in two outer reinforcing bars 13 at one end. A strip-shaped groove 14 is provided between the inner and outer side walls in the middle of the inner reinforcing bar 12. A plurality of through grooves 15 are equidistantly provided from top to bottom between the inner and outer side walls of the outer reinforcing bar 13. The fixed frame 1 structure adopts a weight-reducing and heat-dissipating structure design. A long strip-shaped strip-shaped groove 14 is provided in the middle of the inner reinforcing bar of the fixed frame 1, and a plurality of through grooves 15 are equidistantly provided from top to bottom on the outer reinforcing bar of the fixed frame 1. In addition to strengthening the structure of the coiled copper pipe 21, it can also play a role in assisting the heat dissipation of the coiled copper pipe 21, and at the same time play a role in reducing the weight of the overall intermediate frequency electric furnace induction coil.

[0024] Two connecting frames 16 are fixedly connected symmetrically front and back between the outer side walls of the other ends of the two end face circular frames 11. Two installation grooves 17 are symmetrically provided up and down between the two side walls of the connecting frame 16. The overall intermediate frequency electric furnace induction coil can be fixedly installed through the installation grooves 17 on the two connecting frames 16 in cooperation with fixing parts. A suspension bracket 18 is fixedly connected to each end of the top wall of the upper end face circular frame 11, which can cooperate with a crane to lift the overall intermediate frequency electric furnace induction coil and arrange it outside the electromagnetic heating furnace body to be heated. A threaded connection seat 19 is fixedly connected to each of the front and back ends of the top wall of the upper end face circular frame 11. Four support blocks 110 are fixedly connected to the bottom wall of the lower end face circular frame 11 at equal angles. The bottom wall of the support block 110 is fixedly connected to a base 111. Two installation holes 112 are provided between the upper and lower side walls of the base 111. The overall intermediate frequency electric furnace induction coil can be fixedly installed at the corresponding installation station through the installation holes 112 on the base 111 in cooperation with fixing components.

[0025] At the end of the coiled copper tube 21, a diversion tube 22 is fixedly connected. At one end of the diversion tube 22 away from the coiled copper tube 21, a connecting flange 23 is fixedly connected. A plurality of connecting holes 24 are equiangularly formed between the front and rear side walls of the connecting flange 23. The circulating cold water pipes can be connected through the connecting holes 24 on the two connecting flanges 23 and a fixing component.

[0026] The working principle of the present utility model is as follows: At both ends of the top wall of the upper end face circular frame 11, a hanger 18 is fixedly connected respectively, which can cooperate with a crane to lift the overall intermediate frequency electric furnace induction coil and arrange it outside the electromagnetic heating furnace body to be heated. The intermediate frequency electric furnace induction coil is a coiled copper tube 21 formed by winding a rectangular copper tube into a spiral shape. Cooling water passes through the copper tube to reduce the temperature when the coil works. The surface of the coil is sprayed with high-strength insulating paint and wrapped with insulating tape. When an intermediate frequency current passes through the induction coil, that is, the coiled copper tube 21, an alternating magnetic field will be generated around it. When the electromagnetic heating furnace body to be heated is placed in this magnetic field, the alternating magnetic field will induce eddy currents in the workpiece. Due to the resistance of the electromagnetic heating furnace body to be heated, these eddy currents will generate heat, thereby raising the temperature of the electromagnetic heating furnace body to be heated.

[0027] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A medium frequency electric furnace induction coil, comprising a fixed frame (1); a coil mechanism (2) arranged inside the fixed frame (1); Features: The fixed frame (1) comprises two end face circular frames (11) arranged in an upper and lower symmetrical shape, a group of inner reinforcement strips (12) being fixedly connected between the inner ends of the two end face circular frames (11) facing each other, and a group of outer reinforcement strips (13) being fixedly connected between the outer ends of the two end face circular frames (11) facing each other. The coil mechanism (2) comprises a coiled copper tube (21) fixedly arranged between a group of inner reinforcement strips (12) and a group of outer reinforcement strips (13); A group of the inner reinforcement strips (12) is composed of a plurality of strips arranged at equal angles, and the outer sides of the plurality of inner reinforcement strips (12) are fixedly connected to the inner outer surface of the coiled copper tube (21); a group of the outer reinforcement strips (13) is composed of a plurality of strips arranged at an angle, and the inner sides of the plurality of outer reinforcement strips (13) are fixedly connected to the outer outer surface of the coiled copper tube (21).

2. The medium frequency electric furnace induction coil according to claim 1, characterized in that: The two outer reinforcement strips (13) at one end are provided with through holes for the ends of the coiled copper tubes (21) to pass through.

3. The medium frequency electric furnace induction coil according to claim 1, characterized in that: A strip-shaped groove (14) is provided between the inner and outer side walls in the middle of the inner reinforcement strip (12), and a plurality of through grooves (15) are provided between the inner and outer side walls of the outer reinforcement strip (13) at equal intervals from top to bottom.

4. The medium frequency electric furnace induction coil according to claim 1, characterized in that: Two connecting frames (16) are fixedly connected between the outer side walls of the other ends of the two end face circular frames (11) in a front-to-back symmetrical manner, and two installation grooves (17) are provided between the two side walls of the connecting frame (16) in a top-to-bottom symmetrical manner.

5. The medium frequency electric furnace induction coil according to claim 1, characterized in that: A hanger (18) is fixedly connected to each of the two ends of the top wall of the upper end face circular frame (11), and a threaded connection seat (19) is fixedly connected to each of the front and rear ends of the top wall of the upper end face circular frame (11).

6. The medium frequency electric furnace induction coil according to claim 1, characterized in that: Four support blocks (110) are fixedly connected to the bottom wall of the end face circular frame (11) at equal angles. The bottom wall of the support block (110) is fixedly connected to the base (111). Two mounting holes (112) are provided between the upper and lower side walls of the base (111).

7. The medium frequency electric furnace induction coil according to claim 1, characterized in that: The end of the coiled copper tube (21) is fixedly connected to a flow guide tube (22), and one end of the flow guide tube (22) away from the coiled copper tube (21) is fixedly connected to a connecting flange (23), and a plurality of connecting holes (24) are provided at equal angles between the front and rear side walls of the connecting flange (23).

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