CN223872425U - Electromagnetic induction heating modules, heating equipment and slab production lines - Google Patents
Electromagnetic induction heating modules, heating equipment and slab production linesInfo
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- CN223872425U CN223872425U CN202520307856.7U CN202520307856U CN223872425U CN 223872425 U CN223872425 U CN 223872425U CN 202520307856 U CN202520307856 U CN 202520307856U CN 223872425 U CN223872425 U CN 223872425U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
本实用新型公开了电磁感应加热模块、加热设备及板坯生产线，涉及感应加热技术领域。所述加热模块包括外壳、线圈以及沿线圈的长度方向依次设置的第一导磁组件、第二导磁组件和第三导磁组件，第一导磁组件和第三导磁组件分别与待加热对象的两侧边部对应，第二导磁组件与待加热对象的中部对应；第一导磁组件和第三导磁组件均包括与线圈配合且可上下移动的第一导磁体，第二导磁组件包括与线圈配合且固定的第二导磁体。本实用新型通过调节第一导磁体与待加热对象之间的间隙，进而调节待加热对象对应的区域的加热温度，实现待加热对象宽度方向的温度均匀性。
This utility model discloses an electromagnetic induction heating module, heating equipment, and slab production line, relating to the field of induction heating technology. The heating module includes a shell, a coil, and a first magnetic conductive component, a second magnetic conductive component, and a third magnetic conductive component arranged sequentially along the length of the coil. The first and third magnetic conductive components correspond to the two sides of the object to be heated, respectively, and the second magnetic conductive component corresponds to the middle of the object. Both the first and third magnetic conductive components include a first magnetic conductor that cooperates with the coil and can move vertically, while the second magnetic conductive component includes a second magnetic conductor that cooperates with the coil and is fixed. This utility model adjusts the gap between the first magnetic conductor and the object to be heated, thereby adjusting the heating temperature of the corresponding area of the object to be heated, achieving temperature uniformity along the width of the object.
Description
Technical Field
The utility model belongs to the technical field of induction heating, and particularly relates to an electromagnetic induction heating module, heating equipment and a slab production line.
Background
In the induction heating technology, transverse magnetic field heating and longitudinal magnetic field heating are two main heating modes. Compared with longitudinal magnetic field heating, transverse magnetic field heating has a plurality of outstanding advantages:
The longitudinal magnetic field heating adopts a coil in a spiral tube form, when a slab passes through a closed channel of a heater, induced current is generated to heat the slab, and the deformation of the slab is extremely easy to damage an inductor due to the fixed size of the closed channel of the longitudinal magnetic field, while the transverse magnetic field heating comprises induction heaters distributed up and down, and no other equipment or parts are left and right.
Secondly, when the longitudinal magnetic field is used for heating, induced current on the slab forms circulation on the surface layer of the thickness section, which leads to similar temperature distribution (low temperature at the side part in the width direction and high temperature at the middle part) of the slab before and after the heating, and temperature non-uniformity still exists, on the other hand, when the slab thickness is thinner, under the condition of ensuring the heating efficiency, higher requirements are put on the heating frequency, and the input cost of heating equipment is also greatly increased. Due to the magnetic field distribution characteristic of transverse magnetic field heating, heat can be more uniformly transferred to each part of the slab in the heating process, so that more uniform slab heating is realized, the slab performance difference caused by uneven heating is reduced, the stability of product quality is improved, the requirement on frequency is lower, and the equipment input cost is also greatly reduced.
In addition, the transverse magnetic field heating is convenient for flexibly adjusting the positions and arrangement modes of the induction heaters according to different specifications and production requirements of slabs so as to achieve the optimal heating effect and meet the requirement of heating temperature uniformity, and powerful support is provided for producing steel products of different specifications in short-flow steelmaking. However, although transverse magnetic field heating has many advantages, there are still some problems to be solved in actually heating the slab, particularly in terms of heating efficiency and temperature uniformity:
(1) Heating efficiency problems. Although transverse magnetic field heating improves heating efficiency to some extent as compared with longitudinal magnetic field heating, it still has room for improvement in heating efficiency when facing slabs of different materials, thickness and width. For example, in some high-strength and high-toughness steel slabs, due to relatively poor heat conduction performance, the transverse magnetic field heating is difficult to achieve the ideal heating temperature in a short time, and the production efficiency is affected.
(2) Temperature uniformity problems. Although transverse magnetic field heating can achieve a more uniform heating throughout, temperature deviations may still occur in localized areas, such as edges and corners of the slab. The temperature non-uniformity phenomenon can cause problems of size deviation, inconsistent performance and the like of the slab in the subsequent rolling process, and the quality of the final product is affected.
In summary, in the trend of short-process steelmaking, the importance of the induction heating technology is self-evident, while transverse magnetic field heating plays a key role in short-process steelmaking by virtue of its unique advantages. At the same time, however, the problems of heating efficiency and temperature uniformity that exist in the process of heating the slab by the transverse magnetic field heating must be emphasized and solved.
Disclosure of utility model
The utility model aims to provide an electromagnetic induction heating module, heating equipment and a slab production line, which are used for solving the problems of poor heating efficiency and poor temperature uniformity effect in the slab width direction of the traditional heating equipment.
The electromagnetic induction heating module comprises a shell, a coil arranged in the shell, and a first magnetic conduction assembly, a second magnetic conduction assembly and a third magnetic conduction assembly which are sequentially arranged along the length direction of the coil, wherein the first magnetic conduction assembly and the third magnetic conduction assembly respectively correspond to two side edges of an object to be heated, the second magnetic conduction assembly corresponds to the middle of the object to be heated, the first magnetic conduction assembly and the third magnetic conduction assembly both comprise first magnetic conductors which are matched with the coil and can move up and down, and the second magnetic conduction assembly comprises second magnetic conductors which are matched with the coil and are fixed.
In the electromagnetic induction heating module, the gap between the first magnetizer and the object to be heated is adjusted by adjusting the first magnetizer, so that the heating temperature of the local area of the object to be heated corresponding to the first magnetizer is adjusted, and the temperature uniformity of the object to be heated in the width direction is realized.
Further, the heating module further comprises a hydraulic driving module or an electric control driving module;
the hydraulic driving module comprises a servo hydraulic cylinder and a hydraulic controller, a piston rod of the servo hydraulic cylinder penetrates through the shell to be connected with the first magnetizer, and the hydraulic controller is connected with the servo hydraulic cylinder;
The electric control driving module comprises a driving motor, a linear motion mechanism and an electric controller, wherein the linear motion mechanism penetrates through the shell and is connected with the first magnetizer, and the electric controller is connected with the linear motion mechanism through the driving motor.
Further, the number of the servo hydraulic cylinders is 2, and the two servo hydraulic cylinders are symmetrically arranged about the center line of the first magnetizer.
Further, the number of the first magnetic conduction assemblies is equal to that of the third magnetic conduction assemblies, and the first magnetic conduction assemblies or the third magnetic conduction assemblies correspond to one area in the width direction of the object to be heated.
Further, grooves matched with the coils are formed in the bottoms of the first magnetizer and the second magnetizer, and the long sides of the coils penetrate through the grooves of the first magnetizer and the second magnetizer;
When the cross section of each long side of the coil corresponds to different grooves of the first magnetizer and/or the second magnetizer, the first width is greater than or equal to twice the second width, wherein the first width is the width of the magnetizer between two adjacent grooves of the first magnetizer and/or the second magnetizer, and the second width is the width of the outer wall of the magnetizer of the outermost groove.
Further, the second magnetizer is fixedly arranged on the shell through a connecting component, the connecting component comprises an insulating bolt and an insulating block, one end of the insulating bolt is arranged on the second magnetizer, the other end of the insulating bolt is arranged on the shell, and the insulating block is arranged between the second magnetizer and the shell and sleeved on the insulating bolt.
Further, a first encapsulating layer is arranged outside the coil, a second encapsulating layer is arranged on the inner wall of the shell, and the first encapsulating layer and the second encapsulating layer form a whole;
and a heat insulation buffer layer is arranged between the bottom of the first magnetizer and the second potting layer on the bottom surface of the shell.
Further, the first magnetizer and the second magnetizer are made of soft magnetic composite materials.
Based on the same conception, the utility model also provides heating equipment which comprises two electromagnetic induction heating modules, wherein the two electromagnetic induction heating modules are symmetrically arranged by taking the thickness center line of an object to be heated as a symmetrical axis.
Based on the same conception, the utility model also provides a slab production line on which the heating device as described above is provided.
Advantageous effects
Compared with the prior art, the utility model has the advantages that:
The electromagnetic induction heating module adopts a combined design of the coil and the magnetizers, the first magnetizers at the two ends of the coil in the length direction are movably arranged, the gap between the first magnetizers and the plate blank is adjusted by adjusting the up-and-down movement of the first magnetizers through the hydraulic driving module or the electric control driving module or the sliding mode, the magnetic flux is further adjusted, the induction current of the corresponding area on the heating object is further adjusted by controlling the magnetic flux, the heating temperature of each area in the width direction of the heating object is further adjusted, the uniform temperature control of the whole width direction of the heating object is realized, the product quality is improved, meanwhile, the loss of magnetic force lines is reduced due to the fact that the first magnetizers are movably arranged, the heating efficiency is greatly improved, the electric energy utilization rate is improved, and the heating cost is reduced.
The control of heating temperature can be satisfied through first magnetizer regulation, has avoided electromagnetic induction heating module's overall action, also need not the mutual dislocation of adjacent two firing equipment on the production line, and the structure is compacter, and control accuracy is higher, and the complexity is lower.
The first magnetizer and the second magnetizer are made of soft magnetic composite materials, so that the magnetic field generated by the coil is concentrated in the soft magnetic composite materials with high relative magnetic permeability and small magnetic resistance, and compared with the situation without the magnetizer, the magnetic field loss is greatly reduced, the magnetic field utilization rate is greatly improved, and the heating power consumption and the cost are reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawing in the description below is only one embodiment of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of two electromagnetic induction heating module arrangements and a first or third magnetically permeable assembly in an embodiment of the present utility model;
Fig. 2 is a cross-sectional view of a second magnetically permeable assembly according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a rectangular coil formed by an O-shaped winding manner in an embodiment of the utility model;
FIG. 4 is a schematic diagram of a rectangular coil formed by an 8-shaped winding manner according to an embodiment of the present utility model;
Fig. 5 is a schematic diagram of a rectangular coil in the embodiment of the utility model, wherein the cross section of the long side of the rectangular coil corresponds to different grooves of a first magnetizer, b represents the width of the first magnetizer between two adjacent grooves, a represents the width of the outer wall of the magnetizer of the outermost groove, e represents the distance between the coil and the first magnetizer, d represents the distance between the groove and the top surface of the first magnetizer, c represents the maximum travel of the first magnetizer, and h1 represents the allowance and is larger than 0;
FIG. 6 is a schematic diagram of a rectangular coil of FIG. 3 with a long side cross section corresponding to the same groove of the first magnetizer according to an embodiment of the present utility model;
FIG. 7 is a schematic diagram of the rectangular coil shown in FIG. 4 in the embodiment of the present utility model, in which the cross section of the long side corresponds to different grooves of the first magnetizer and the outer walls of the two sides of the outermost groove are magnetizers;
FIG. 8 is a schematic diagram of the rectangular coil shown in FIG. 4 in an embodiment of the present utility model, wherein the long side cross section of the rectangular coil corresponds to different grooves of the first magnetizer, the outer wall of one side of the outermost groove is the magnetizer, and the other side is free of the outer wall;
fig. 9 is a diagram of magnetic flux paths in the form of different matches of coils with the first and second magnetic conductors in an embodiment of the utility model.
The reference numerals illustrate 100-electromagnetic induction heating module above the slab, 110-first magnetizer, 120-outer shell, 121-second encapsulating layer, 122-heat insulation buffer layer, 130-coil, 131-first encapsulating layer, 140-servo hydraulic cylinder, 150-hydraulic controller, 160-second magnetizer, 161-insulating bolt, 162-insulating block, 200-electromagnetic induction heating module below the slab, 300-slab, 400-conveying roller.
Detailed Description
The following description of the embodiments of the present utility model will be made more apparent and fully by reference to the accompanying drawings, in which it is shown, however, only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The electromagnetic induction heating module of the present utility model will be described by taking a heating target as a slab as an example. As shown in fig. 1 and 2, the electromagnetic induction heating module includes a housing 120, a coil 130 disposed in the housing 120, and a first magnetic conductive assembly, a second magnetic conductive assembly and a third magnetic conductive assembly sequentially disposed along a length direction of the coil 130, where the first magnetic conductive assembly and the third magnetic conductive assembly respectively correspond to two side edges of a slab to be heated, the second magnetic conductive assembly corresponds to a middle part of an object to be heated, the first magnetic conductive assembly and the third magnetic conductive assembly each include a first magnetic conductive body 110 that is matched with the coil 130 and can move up and down, and the second magnetic conductive assembly includes a second magnetic conductive body 160 that is matched with and fixed to the coil 130.
Continuous heat dissipation is carried out in the casting, forming and conveying process of the continuous casting slab, and the edge of the slab is higher than the heat dissipation speed of the center in the width direction of the slab, so that the temperature in the width direction of the slab is low before reaching the induction heating zone, and the center temperature is high. Therefore, in the electromagnetic induction heating module of the utility model, the first magnetic conduction assembly and the third magnetic conduction assembly corresponding to the two side edges of the slab adopt the first magnetic conduction assembly 110 which can move up and down, the second magnetic conduction assembly corresponding to the middle part of the slab adopts the second fixed magnetic conduction assembly 160, and the gap between the first magnetic conduction assembly 110 and the slab to be heated is adjusted by adjusting the first magnetic conduction assembly 110, so that the heating temperature of the region corresponding to the first magnetic conduction assembly 110 on the slab to be heated is adjusted, the temperature of the side edges and the middle part of the slab to be heated is gradually uniform, and the temperature uniformity of the object to be heated in the width direction is realized.
In a specific embodiment of the present utility model, the heating module further includes a hydraulic driving module or an electric control driving module, and the first magnetizer 110 is driven to move up and down by a hydraulic driving or electric control driving manner. When the temperature of the edge region of the slab is detected to be lower (for example, lower than the target temperature of the region), the corresponding first magnetizer 110 is controlled to move downwards, the gap between the first magnetizer 110 and the slab is reduced, the magnetic flux of the region is increased, the magnitude of the induced current of the region is increased, the heating temperature of the region is increased, the temperature rise rate of the region is increased, and when the temperature of the edge region of the slab is detected to be higher (for example, higher than the target temperature of the region), the corresponding first magnetizer 110 is controlled to move upwards, the gap between the first magnetizer 110 and the slab is increased, the magnetic flux of the region is reduced, the magnitude of the induced current of the region is reduced, the heating temperature of the region is reduced, and the temperature rise rate of the region is reduced.
The hydraulic driving module includes a servo hydraulic cylinder 140 and a hydraulic controller 150, a piston rod of the servo hydraulic cylinder 140 passes through the housing 120 to be connected with the first magnetizer 110, and the hydraulic controller 150 is connected with the servo hydraulic cylinder 140. In order to ensure smoothness of the first magnetizer 110 in the up-and-down movement process, two servo hydraulic cylinders 140 are configured for a single first magnetizer 110, the two servo hydraulic cylinders 140 are symmetrically arranged about the central line of the first magnetizer 110, and the two servo hydraulic cylinders 140 are synchronously controlled by the same hydraulic controller 150, so that the first magnetizer 110 is ensured not to be blocked in the up-and-down movement process.
The displacement precision of the first magnetizer 110 can reach 0.1mm by adopting a hydraulic driving mode, the control precision for strengthening and weakening the magnetic field is higher, the temperature uniformity control effect is better, and the control precision is improved.
The electric control driving module includes a driving motor, a linear motion mechanism, which is connected with the first magnetizer 110 through the housing 120, and an electric controller, which is connected with the linear motion mechanism through the driving motor. The electric controller controls the linear motion mechanism to linearly move through the driving motor, thereby driving the first magnetizer 110 to move up and down.
In a specific embodiment of the utility model, the number of the first magnetic conduction assemblies and the number of the third magnetic conduction assemblies are equal and are multiple, and each first magnetic conduction assembly or each third magnetic conduction assembly corresponds to one area in the width direction of the slab to be heated.
The method comprises the steps of dividing the region along the width direction of the slab, wherein the middle region of the width direction of the slab corresponds to the second magnetizer 160 of the second magnetic conduction assembly, the two side regions of the width direction of the slab respectively correspond to the first magnetic conduction assembly and the third magnetic conduction assembly, and when the number of the first magnetic conduction assembly and the third magnetic conduction assembly is multiple, the two side regions are divided into a plurality of subareas, and each subarea corresponds to the first magnetizer 110 of one of the first magnetic conduction assembly or the third magnetic conduction assembly. The more the number of the regions divided on both sides in the width direction of the slab, the more the number of the first magnetizers 110, the more accurate the heating temperature control of each region, and the better the temperature uniformity effect in the width direction of the slab.
The first magnetic conductive assembly, the second magnetic conductive assembly and the third magnetic conductive assembly are arranged along the length direction of the coil 130, the width of the plate blank is matched with the length of the inner ring of the coil 130, namely, the length of the magnetic conductor arranged on the coil 130 is matched with the width of the plate blank, the first magnetic conductor 110 on two sides of the coil 130 corresponds to the edge part of the plate blank, and the second magnetic conductor 160 in the middle of the coil 130 corresponds to the middle area of the plate blank.
In a specific embodiment of the present utility model, both the first and second magnetic conductors 110, 160 are made of a soft magnetic composite material. The soft magnetic composite material has good magnetic conductivity and high magnetic saturation, and most importantly, even under the medium-high frequency working condition, the induction vortex is small, the heating is very little, the cooling waterway of the whole heating equipment can be greatly simplified, and the magnetizer of the heating equipment with the structure does not need water cooling.
The first and second magnetic conductors 110, 160 cooperate in the same manner as the coil 130. In the embodiment of the present utility model, grooves matched with the coil 130 are formed at the bottoms of the first and second magnetic conductors 110 and 160, and long sides of the coil 130 pass through the grooves of the first and second magnetic conductors 110 and 160.
In this embodiment, the coil 130 is formed by winding copper tubes, the coil 130 is rectangular, and the rectangular coil can reduce the variation of magnetic flux at the arc transition and ensure the consistency of the shapes of the second magnetizer 160 and the first magnetizer 110. The coil 130 may be formed into a rectangular coil by an O-shaped winding method as shown in fig. 3, or may be formed into a rectangular coil by an 8-shaped winding method as shown in fig. 4. In fig. 4, the left and right parts of the rectangular coil are connected in series by adopting an 8-shaped winding mode, and after the connection, the left and right parts share a shielding cover to carry out magnetic shielding on the outer side of the coil, and the directions of magnetic fields generated by the left and right parts are opposite at the same moment.
The magnetic flux is arranged on the magnetic line path generated by the coil 130 to play a role in magnetic focusing, and the more the magnetic flux is arranged on the magnetic line loop, the smaller the magnetic field loss is, and the higher the energy utilization rate is. Based on this, there are various matching forms of the coil 130 with the first and second magnetic conductors 110 and 160, as shown in fig. 5 to 7.
For the rectangular coil shown in fig. 3, in the first embodiment, two long sides of the coil 130 pass through two different grooves of the first magnetizer 110 and the second magnetizer 160, that is, two long side cross sections of the coil 130 correspond to two different grooves of the first magnetizer 110 and the second magnetizer 160, respectively, as shown in fig. 5, and in the second embodiment, two long sides of the coil 130 pass through the same groove of the first magnetizer 110 and the second magnetizer 160, that is, two long side cross sections of the coil 130 correspond to the same groove of the first magnetizer 110 and the second magnetizer 160, as shown in fig. 6.
For the matching form of the coil 130 shown in fig. 5 and the first magnetizer 110 and the second magnetizer 160, as shown in fig. 9, the magnetic field loss is relatively smaller due to the relatively more magnetizer arrangements on the paths of the magnetic lines of force, and thus the efficiency is relatively higher, but the structural form can result in relatively smaller winding space of the coil 130, fewer winding turns and relatively fewer generated magnetic lines of force. For the matching form of the coil 130 shown in fig. 6 with the first magnetizer 110 and the second magnetizer 160, as shown in fig. 9, the winding space of the coil 130 is larger (compared with the matching form of fig. 5, the number of layers of the coil 130 is the same, but the number of turns of a single layer can be more), however, since the inner ring of the coil 130 has no magnetizer, an air path exists in the magnetic line path, and the magnetic field loss is relatively larger.
For the rectangular coil shown in fig. 4, three long sides (two long sides in the middle are combined to form one) of the coil 130 respectively pass through three different grooves of the first magnetizer 110 and the second magnetizer 160, and two outer walls of two outermost grooves of the first magnetizer 110 and the second magnetizer 160 may be magnetizers (as shown in fig. 7), or one side may be a magnetizer, and the other side may be free of an outer wall (as shown in fig. 8). In fig. 8, the width of the outermost groove is f, where f is 0 or more, and the main path of the magnetic lines of force is in the inner ring of the coil 130, and the outer path is shielded by the housing 120.
For the matching form of the coil 130 shown in fig. 7 with the first magnetizer 110 and the second magnetizer 160, as shown in fig. 9, the magnetic field loss is relatively smaller due to the relatively more magnetizer arrangements on the paths of the magnetic lines of force, and thus the efficiency is relatively higher, but this structural form results in relatively smaller winding space of the coil 130, fewer winding turns, and relatively fewer magnetic lines of force. For the matching form of the coil 130 shown in fig. 8 with the first magnetizer 110 and the second magnetizer 160, as shown in fig. 9, the winding space of the coil 130 is larger (compared with the matching form of fig. 7, the number of layers of the coil 130 is the same, but the number of turns of a single layer can be more), however, since the outer ring of the coil 130 has no magnetizer, an air path exists in the magnetic line path, and the magnetic field loss is relatively large.
When each long side cross section of the coil 130 corresponds to a different groove (as shown in fig. 5 and 7) of the first magnetizer 110 and/or the second magnetizer 160, the first width b is greater than or equal to twice the second width a, where the first width b is the width of the magnetizer between two adjacent grooves of the first magnetizer 110 and/or the second magnetizer 160, and the second width a is the width of the outer wall of the magnetizer of the outermost groove (i.e., the outer wall of the groove is the outer wall of the groove with the magnetizer, and the outer wall is the outermost wall). This size limitation ensures that the magnetic lines in the middle of the coil 130 pass through the magnetizer completely when dispersed to both sides, but do not enter the air, thereby reducing the loss of the magnetic field in the air, improving the magnetic field utilization rate, and improving the heating efficiency.
In order to ensure that the first magnetizer 110 moves up and down normally, as shown in fig. 5, a distance c+h1 between the bottom surface of the coil 130 and the bottom surface of the first magnetizer 110 is greater than a maximum travel c of the first magnetizer 110, and a distance c+h2 between the top surface of the first magnetizer 110 and the inner wall of the housing 120 is greater than the maximum travel c of the first magnetizer 110, wherein h1 and h2 are both the margins and greater than zero, so that magnetic force lines generated by the coil 130 are ensured to be better concentrated in the magnetizer, and the divergence and loss of the magnetic field are reduced.
The number of turns of the coil 130 is greater than or equal to 2, and the number of layers of the coil 130 is greater than or equal to 2. When the coil 130 is multi-turn, the dimension of the coil 130 to a location marked in fig. 5-8 is the dimension of the face of the coil 130 closest thereto to the location. For example, in fig. 5 to 8, when the coil 130 has two layers, c+h1 represents the distance between the bottom surface of the lower layer of the coil 130 and the bottom surface of the first magnetizer 110, but not the distance between the bottom surface of the upper layer of the coil 130 and the bottom surface of the first magnetizer 110.
In a specific embodiment of the present utility model, the second magnetizer 160 is fixed on the housing 120 through a connection assembly, as shown in fig. 2, the connection assembly includes an insulating bolt 161 and an insulating block 162, one end of the insulating bolt 161 is arranged on the second magnetizer 160, the other end is arranged on the housing 120, and the insulating block 162 is arranged between the second magnetizer 160 and the housing 120 and sleeved on the insulating bolt 161. The insulating bolt 161 is a non-magnetic, high strength insulating bolt, and the insulating block 162 ensures that the second magnetizer 160 is not in direct contact with the housing 120.
In the embodiment of the utility model, the first encapsulating layer 131 is arranged outside the coil 130, the second encapsulating layer 121 is arranged on the inner wall of the housing 120, and the first encapsulating layer 131 and the second encapsulating layer 121 form a whole.
The coil 130 is preformed to form an integral body with the first potting layer 131, which is assembled with the first and second magnetic conductors 110, 160 such that the coil 130 is positioned within the grooves of the first and second magnetic conductors 110, 160. The first encapsulating layer 131 wraps the coil 130 and maintains a certain thickness, insulation between the coil 130 and the first magnetizer 110 and insulation between the coil and the second magnetizer 160 are guaranteed, the thickness of the first encapsulating layer 131 are related to the working voltage of the electromagnetic induction heating module, and the higher the working voltage is, the larger the thickness of the first encapsulating layer 131 is. Meanwhile, the thickness of the first potting layer 131 adjacent to the first and second magnetic conductors 110 and 160 is smaller than the distance e between the coil 130 and the first and second magnetic conductors 110 and 160, so as to ensure smooth up-and-down movement of the first magnetic conductor 110.
The second potting layer 121 is disposed on the bottom and side surfaces of the housing 120 and forms a whole with the first potting layer 131, so that the second potting layer 121 and the housing 120 can be connected by anchoring nails to bear the whole weights of the coil 130, the first potting layer 131 and the second potting layer 121 in order to ensure the integrity of the potting layer and the housing 120. The first and second potting layers 131 and 121 ensure a certain thickness and structural strength. During the up-and-down movement of the first magnetizer 110, the first magnetizer 110 is not in contact with the second potting layer 121 on the bottom surface of the housing 120 at the lower limit.
In the embodiment of the present utility model, a heat insulation buffer layer 122 is provided between the bottom of the first magnetizer 110 and the second potting layer 121 on the bottom surface of the housing 120. The heat insulating buffer layer 122 is resistant to high temperature, not only insulates the heat radiation of the heated slab, but also prevents the first magnetizer 110 and the second encapsulating layer 121 from being directly contacted and mutually knocked and damaged.
The heating apparatus provided in this embodiment includes two electromagnetic induction heating modules 100/200, as shown in fig. 1, the two electromagnetic induction heating modules 100/200 being symmetrically arranged with a thickness center line of the slab 300 to be heated as a symmetry axis.
According to the slab production line provided by the embodiment of the utility model, the plurality of heating devices are arranged on the slab production line, the plurality of heating devices are arranged along the conveying direction of the slab, the number of the heating devices is determined according to the slab production capacity of the production line and the target temperature to be reached, and each heating device is identical, so that the interchangeability is ensured.
The foregoing disclosure is merely illustrative of specific embodiments of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art will readily recognize that changes and modifications are possible within the scope of the present utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520307856.7U CN223872425U (en) | 2025-02-25 | 2025-02-25 | Electromagnetic induction heating modules, heating equipment and slab production lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520307856.7U CN223872425U (en) | 2025-02-25 | 2025-02-25 | Electromagnetic induction heating modules, heating equipment and slab production lines |
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| Publication Number | Publication Date |
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| CN223872425U true CN223872425U (en) | 2026-02-03 |
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| CN202520307856.7U Active CN223872425U (en) | 2025-02-25 | 2025-02-25 | Electromagnetic induction heating modules, heating equipment and slab production lines |
Country Status (1)
| Country | Link |
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| CN (1) | CN223872425U (en) |
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2025
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