Electromagnetic induction type bolt heater capable of adjusting heating range

Abstract

The utility model discloses an electromagnetic induction type bolt heater with an adjustable heating range, and relates to the field of heaters. The induction coil comprises an induction coil main body and a bolt, the induction coil main body comprises an A-section induction coil and a B-section induction coil, the inner side of the A-section induction coil is filled with a magnetic conductive material, and the outer side of the A-section induction coil and the outer side of the B-section induction coil are provided with an insulating material. The magnetic flux in the section A induction coil is increased by adding the magnetic conductive material, and according to the principle of electromagnetic induction, when the magnetic flux changes, induction current is generated in the conductor, and then heat is generated, so that the heating efficiency can be effectively improved by increasing the magnetic flux, sectional heating operation can be performed on the bolt, the safety of operation is improved, and the service life of the bolt is prolonged. And the processing form of the bolt is more diversified.

Description

Technical Field

[0001] The utility model relates to the field of heaters, in particular to an electromagnetic induction bolt heater with an adjustable heating range. Background Art

[0002] When electromagnetic induction is used to heat and stretch bolts, a U-shaped conductor is usually used as an induction coil, which is then wrapped into a rod shape with insulating material according to the diameter of the bolt center hole, and then inserted into the bolt center hole and connected to a medium-frequency power supply to generate an alternating magnetic field. Under the action of the alternating magnetic field, the bolt itself generates heat and heats up to achieve the purpose of heating. (For the specific principle, please refer to application number: 2017200652.6, name: electromagnetic induction bolt heating device) However, this heating also has a disadvantage, that is, the part of the bolt center hole through which the U-shaped coil passes will be completely heated, while in some special processing requirements, only the non-thread part needs to be heated, which reduces the diversity of bolt processing. At the same time, due to the limitation of the center hole diameter, the spacing C value between the two conductors of the U-shaped coil is often relatively small, which causes the U-shaped coil to produce a certain hysteresis phenomenon and reduces the heating effect. Utility Model Content

[0003] Based on this, the purpose of the utility model is to provide an electromagnetic induction bolt heater with an adjustable heating range to solve the technical problem of low heating diversity for bolts in the existing heater technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an electromagnetic induction bolt heater with an adjustable heating range, comprising an induction coil body and a bolt, the induction coil body comprising an A-section induction coil and a B-section induction coil, the inner side of the A-section induction coil is filled with magnetic conductive material, and the outer sides of the A-section induction coil and the B-section induction coil are provided with insulating material.

[0005] By adopting the above technical solution, magnetic conductive material is added between the U-shaped coil corresponding to the part of the bolt to be heated and the A-section induction coil, which effectively increases the magnetic flux of this section. This measure greatly improves the heating efficiency of the A-section induction coil, because more magnetic flux means more electromagnetic energy can be absorbed by the bolt and converted into heat.

[0006] Furthermore, the magnetic conductive material has two but not limited to two addition amount forms.

[0007] By adopting the above technical solution, two or more forms of expression of the addition amount of magnetic conductive materials are provided, which means that the appropriate addition amount of magnetic conductive materials can be flexibly selected according to specific heating requirements and factors such as the material and size of the bolts. This helps to more accurately control the magnetic flux, thereby achieving optimized control of the bolt heating process.

[0008] Furthermore, the insulating material is cast to uniformly wrap the induction coil body.

[0009] By adopting the above technical solution, the insulating material is evenly wrapped on the induction coil body in the form of casting, so that the electrical safety of the coil can be ensured. This uniform wrapping method can effectively isolate the coil from the external environment and prevent short circuits or electrical failures caused by direct contact, thereby improving the stability and safety of the entire heating system.

[0010] Furthermore, the induction coil body and the bolt are coaxially arranged.

[0011] By adopting the above technical solution, it is possible to ensure that the magnetic field is evenly distributed on the bolt. This layout optimizes the effect of electromagnetic induction, allowing the bolt to be heated more evenly, avoiding local overheating or unheated areas caused by uneven heating.

[0012] Furthermore, the section A induction coil and the section B induction coil are an integrated structure, and the overall structure is "U" shaped.

[0013] By adopting the above technical solution, the structural stability of the coil is enhanced, and the integrated design reduces connection points and potential sources of failure, thereby improving the durability and reliability of the entire induction coil.

[0014] Furthermore, the end of the B-section induction coil is provided with a positive power connection point and a negative power connection point for connection with an external medium frequency power supply.

[0015] By adopting the above technical solution, the positive power connection point and the negative power connection point make the connection with the external medium frequency power supply simple and direct. In this way, the power supply can be easily connected and disconnected, which provides great convenience for the installation, commissioning and maintenance of the equipment.

[0016] Furthermore, the "U"-shaped spacing of the induction coil body is in two but not limited to two size forms.

[0017] By adopting the above technical solution, it means that the heater can adapt to bolts of different sizes. This design increases the flexibility and applicability of the product, enabling it to be widely used in the heating needs of bolts of different specifications.

[0018] In summary, the utility model mainly has the following beneficial effects:

[0019] 1. The utility model increases the magnetic flux in the induction coil of section A and section B by adding the magnetic conductive material. According to the principle of electromagnetic induction, when the magnetic flux changes, an induced current will be generated in the conductor, thereby generating heat. Therefore, increasing the magnetic flux can effectively improve the heating efficiency. Secondly, due to the improved heating efficiency of the induction coil of section A, the heating time of the bolt is greatly shortened, which not only improves the production efficiency but also reduces the energy consumption. In addition, the case also takes into account the uniformity and safety of heating. Compared with the induction coil of section B, the temperature rise of section A is faster because it is filled with magnetic conductive material. When the bolt is heated to the desired effect, the temperature of section B is still kept in a lower temperature range that can be touched by human hands without injury, which not only improves the safety of operation but also makes the processing form of the bolt more diversified.

[0020] 2. The utility model sets an induction coil body. In the process of electromagnetic induction heating, the spacing of the U-shaped coils is an important design parameter. By adjusting the spacing between the U-shaped coils according to the size of the processed bolts, the heating effect can be optimized and the heating efficiency can be improved. Specifically, if the spacing of the U-shaped coils is too small, hysteresis may occur. Hysteresis is the eddy current and hysteresis effect generated by the magnetic field in the conductor, which will hinder the change of the magnetic field and consume part of the energy, thereby reducing the heating efficiency. By increasing the spacing of the U-shaped coils, the magnetic interaction between the coils can be reduced, thereby reducing the occurrence of hysteresis. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic cross-sectional structure diagram of the induction coil body of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the bolt and the induction coil body in use state of the utility model;

[0023] Figure 3 This is a schematic diagram of the bolt structure of the utility model.

[0024] In the figure: 1. Induction coil body; 101. Section A induction coil; 102. Section B induction coil; 103. Magnetic conductive material; 104. Insulating material; 2. Bolts; 301. Power supply positive pole connection point; 302. Power supply negative pole connection point. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0026] The following describes an embodiment of the utility model based on its overall structure.

[0027] Embodiment 1:

[0028] An electromagnetic induction bolt heater with adjustable heating range, such as Figure 1-Figure 3 As shown, it includes an induction coil body 1 and a bolt 2. The induction coil body 1 includes an A-section induction coil 101 and a B-section induction coil 102. The inner side of the A-section induction coil 101 is filled with a magnetic conductive material 103, and the outer sides of the A-section induction coil 101 and the B-section induction coil 102 are provided with an insulating material 104. The magnetic conductive material is added and filled between the U-shaped coil corresponding to the portion of the bolt 2 to be heated and the A-section induction coil 101, which effectively increases the magnetic flux of this section. This measure greatly improves the heating efficiency of the A-section induction coil 101, because more magnetic flux means more electromagnetic energy can be absorbed by the bolt 2 and converted into heat. At the same time, due to the improvement of the heating efficiency, the time required for the bolt 2 to achieve the desired heating effect is also shortened by multiples, which not only improves the production efficiency, but also makes the processing forms of the bolt 2 more diverse, because the heating process can be completed faster, so that there is more time for other processing steps or more processing attempts.

[0029] See also Figure 1 , Figure 2 , Figure 3 The magnetic conductive material 103 has two but not limited to two addition amounts. Providing two or more addition amounts of the magnetic conductive material 103 means that the appropriate addition amount of the magnetic conductive material can be flexibly selected according to specific heating requirements and factors such as the material and size of the bolt 2. This helps to more accurately regulate the magnetic flux, thereby achieving optimal control of the bolt heating process. At the same time, the diverse addition amount selection also increases the flexibility and breadth of application, allowing the heater to adapt to more types of bolt heating requirements, which not only improves the practicability of the heater, but also expands its application scenarios in industrial production, bringing more convenience and possibilities to the processing of the bolt 2.

[0030] See also Figure 1 , Figure 2 , Figure 3 The insulating material 104 is poured to uniformly wrap the induction coil body 1. The electrical safety of the coil can be ensured by uniformly wrapping the insulating material 104 on the induction coil body 1. This uniform wrapping method can effectively isolate the coil from the external environment and prevent short circuits or electrical failures caused by direct contact, thereby improving the stability and safety of the entire heating system. At the same time, pouring the insulating material 104 can also enhance the structural strength of the induction coil and reduce damage that may be caused by vibration or impact during use. In addition, the uniformly wrapped insulating layer also helps to dissipate heat and prevent the coil from overheating and affecting its performance and life. These measures together improve the reliability and durability of the electromagnetic induction bolt heater.

[0031] See also Figure 1 , Figure 2 , Figure 3 The induction coil body 1 and the bolt 2 are coaxially arranged to ensure that the magnetic field is evenly distributed on the bolt. This layout optimizes the effect of electromagnetic induction, allowing the bolt to be heated more evenly, avoiding local overheating or unheated areas caused by uneven heating. At the same time, the coaxial line setting also improves the efficiency of energy transmission. When the induction coil coincides with the axis of the bolt 2, the direction of the magnetic field is consistent with the length direction of the bolt 2, which is conducive to more effective transmission of magnetic field energy to the bolt 2, thereby improving the heating speed and effect. This setting not only improves the heating quality, but also reduces energy consumption. It is an important optimization measure in electromagnetic induction heating technology.

[0032] See also Figure 1 , Figure 2 , Figure 3 The A section induction coil 101 and the B section induction coil 102 are an integrated structure, and the overall structure is "U"-shaped, which enhances the structural stability of the coil. The integrated design reduces the connection points and potential sources of failure, thereby improving the durability and reliability of the entire induction coil. At the same time, the "U"-shaped structure enables the coil to fit the shape of the bolt 2 tightly, ensuring that the magnetic field can act on the bolt more effectively, improving the heating efficiency and heating uniformity. This structure also simplifies the installation and disassembly process, reduces maintenance costs, and improves production efficiency.

[0033] See also Figure 1 , Figure 2 , Figure 3 The end of the B-section induction coil 102 is provided with a positive power connection point 301 and a negative power connection point 302 for connecting to an external medium frequency power supply. The positive power connection point 301 and the negative power connection point 302 make the connection with the external medium frequency power supply simple and direct. In this way, the power supply can be easily connected and disconnected, which provides great convenience for the installation, commissioning and maintenance of the equipment. At the same time, the clear positive and negative connection points also improve the safety of the electrical connection, avoid electrical failures or safety hazards caused by wiring errors, and make the power connection more stable and reliable, thereby ensuring the continuity and stability of the heating process of the bolt 2.

[0034] Embodiment 2:

[0035] See also Figure 1 , Figure 2 , Figure 3The "U"-shaped spacing of the induction coil body 1 is two but not limited to two size forms, which means that the heater can adapt to bolts of different sizes. This design increases the flexibility and applicability of the product, enabling it to be widely used in the heating needs of bolts 2 of different specifications. At the same time, the diverse spacing options also optimize the heating effect. For bolts of different sizes, the "U"-shaped spacing can be adjusted to ensure the best magnetic field distribution and heating efficiency, thereby improving production efficiency and heating quality, which not only meets the diverse bolt heating needs on the market, but also improves the efficiency and effect of the entire heating process.

[0036] The implementation principle of the utility model is as follows: in this case, a magnetic conductive material is added and filled between the U-shaped coil corresponding to the portion of the bolt 2 to be heated and the A-section induction coil 101 to increase the magnetic flux of this section, thereby greatly improving the heating efficiency of the A-section induction coil 101, and at the same time, the time required for heating the bolt 2 is shortened exponentially. Compared with the B-section induction coil 102, since the temperature rise of the A-section is faster, when the bolt 2 is heated to the desired effect, the temperature of the B-section is basically maintained in a lower temperature range that can be touched by a human hand without injury, thereby increasing the diversity of processing forms for the bolt 2;

[0037] The spacing between the U-shaped coils can be changed according to the size of the processed bolt 2, thereby reducing the hysteresis phenomenon caused by the small spacing between the U-shaped coils and improving the heating efficiency.

[0038] Parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0039] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. An electromagnetic induction bolt heater with adjustable heating range, characterized in that: The invention comprises an induction coil body (1) and a bolt (2); the induction coil body (1) comprises an A-section induction coil (101) and a B-section induction coil (102); the inner side of the A-section induction coil (101) is filled with a magnetic conductive material (103); and the outer sides of the A-section induction coil (101) and the B-section induction coil (102) are provided with an insulating material (104).

2. The electromagnetic induction bolt heater with adjustable heating range according to claim 1, characterized in that: The magnetic conductive material (103) has two but not limited to two addition amount forms.

3. The electromagnetic induction bolt heater with adjustable heating range according to claim 1, characterized in that: The insulating material (104) is cast to uniformly wrap the induction coil body (1).

4. The electromagnetic induction bolt heater with adjustable heating range according to claim 1, characterized in that: The induction coil body (1) and the bolt (2) are arranged coaxially.

5. The electromagnetic induction bolt heater with adjustable heating range according to claim 1, characterized in that: The A-section induction coil (101) and the B-section induction coil (102) are an integrated structure, and are in a "U" shape as a whole.

6. The electromagnetic induction bolt heater with adjustable heating range according to claim 1, characterized in that: The end of the B-section induction coil (102) is provided with a positive power connection point (301) and a negative power connection point (302) for connection with an external medium frequency power supply.

7. The electromagnetic induction bolt heater with adjustable heating range according to claim 1, characterized in that: The "U"-shaped spacing of the induction coil body (1) is in two but not limited to two size forms.

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