An electromagnetic induction heating type leveling system and method thereof

Abstract

The present invention discloses an electromagnetic induction heating type leveling system and method, which can adaptively adjust the heating and leveling according to different curvatures of the surface to be leveled through an electromagnetic induction heating device in a leveling machine. The heating temperature distribution is uniform, the heating accuracy is high, the energy consumption is low, the efficiency is high, and the safety is high. The leveling machine includes a chiller, a variable frequency power supply, and an electromagnetic induction heating device; the electromagnetic induction heating device includes a handheld coaxial transformer and an electromagnetic induction heating coil with a curved body; the variable frequency power supply is arranged above the chiller; the chiller is connected to the electromagnetic induction heating device through a first water pipe assembly and a second water pipe assembly, and the electromagnetic induction heating device returns water to the chiller through a third water pipe assembly to form a water flow cycle to cool the electromagnetic induction heating device and the variable frequency power supply; the variable frequency power supply supplies power to the chiller and the electromagnetic induction heating device through a first wire assembly and a second wire assembly.

Description

Technical Field

[0001] The present invention belongs to the technical field of welding deformation leveling, and relates to an electromagnetic induction heating type leveling system and method thereof. Background Art

[0002] Ship and ocean engineering structures are mainly connected by fusion welding processes. The uneven local heating of steel by the welding arc will inevitably cause stress and deformation in ship and ocean engineering structures. There are many problems with traditional thermal forming leveling processes. For example, they have high requirements for the operator's experience, high uncertainty in the leveling effect, and produce toxic gases during the heating process, which has a greater impact on the environment. There are also safety hazards when storing the required fuel. In addition, the labor intensity of water and fire correction is high and the environment is poor, and fewer and fewer people are willing to engage in this industry. Electromagnetic induction heating has the characteristics of high efficiency, clean energy, and easy control, and has gradually become the preferred option for the heating forming method.

[0003] The hull of a sailing ship is composed of a combination of curved surfaces with various curvatures. Typical complex curved surfaces include sail-shaped surfaces, saddle-shaped surfaces, and torsion-shaped surfaces. Other complex curved surface shapes can be regarded as combinations of these three typical shapes. Usually, when the distance between the induction heating coil and the steel plate is 3 - 4 mm, the electromagnetic induction effect is the best. However, the distance between the traditional induction coil and the heating component and the steel plate cannot be adjusted according to the different shapes of the curved surface of the steel plate, and it is impossible to ensure the efficiency of electromagnetic induction, thus affecting the heating effect. Due to the complexity of the sheet shape, it is difficult to ensure the stability of the distance between the coil and the sheet during the heating process, which in turn leads to problems such as uneven temperature distribution and low heating accuracy. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide an electromagnetic induction heating type leveling system and method thereof. Through the electromagnetic induction heating device in the leveling machine, adaptive adjustment heating leveling is carried out according to the different curvatures of the plane to be leveled, with uniform heating temperature distribution, high heating accuracy, energy saving, high efficiency, and high safety.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions.

[0006] An electromagnetic induction heating type leveling system of the present invention includes a leveling machine, which works on the area to be leveled through the principle of electromagnetic induction;

[0007] The described leveling machine includes a chiller, a variable frequency power supply, a first water pipe assembly, a first wire assembly, a second water pipe assembly, a third water pipe assembly, a second wire assembly, and an electromagnetic induction heating device; the electromagnetic induction heating device includes a handheld coaxial transformer and an electromagnetic induction heating coil with a bendable body; the variable frequency power supply is arranged above the chiller; the chiller is connected to the electromagnetic induction heating device through the first water pipe assembly and the second water pipe assembly, and the electromagnetic induction heating device returns water to the chiller through the third water pipe assembly to form a water flow cycle to cool the electromagnetic induction heating device and the variable frequency power supply; the variable frequency power supply supplies power to the chiller and the electromagnetic induction heating device through the first wire assembly and the second wire assembly.

[0008] Specifically, the electromagnetic induction heating coil is fixed at the front end of the handheld coaxial transformer.

[0009] Preferably, the electromagnetic induction heating coil is installed in the groove opening at the front end of the handheld coaxial transformer and fixed with screws.

[0010] Specifically, the electromagnetic induction heating coil includes a cavity long cylinder and a bendable body; the cavity long cylinder is made of copper material, and its internal is a cavity pipeline; one end of the cavity long cylinder is connected to the handheld coaxial transformer, and the other end is fixed to the bendable body, and its fixed part divides the bendable body into two equal-length parts in the length direction; a plurality of synchronously rotatable connectors are evenly distributed on both sides of the fixed part; a telescopic drag chain is arranged below each rotating connector; under the synchronous rotation of each rotating connector, the bendable body of the electromagnetic induction heating coil can be driven to bend towards the cavity long cylinder; after water flows through the handheld coaxial transformer into the cavity pipeline of the cavity long cylinder, it then flows through the water inlet arranged at one end of each telescopic drag chain, the lateral hose, the water outlet at the other end in sequence, and finally flows back to the handheld coaxial transformer.

[0011] Specifically, the rotating connector includes an inner slide rail, a brush, a slip ring, an outer slide rail, and a motor; during operation, the motor drives the inner slide rail, the inner slide rail rotates in the outer slide rail, and at the same time drives the brush fixed to it to rotate. The rotation angle range of the rotating connector is -30° to 30°.

[0012] An electromagnetic induction heating leveling method of the present invention uses an electromagnetic induction heating leveling system as described above. The method includes the following steps:

[0013] Step 1: Connect the power supply and turn on the variable frequency power supply of the leveling system.

[0014] Step 2: Move the electromagnetic induction heating device to the area to be leveled, and adjust the bendable body of the electromagnetic induction heating coil to a bending degree matching the curvature of the area to be leveled through the rotating connector.

[0015] Step 3: Activate the heating function, and the output of the variable-frequency power supply is transmitted to the electromagnetic induction heating device through the second wire assembly;

[0016] Step 4: Activate the chiller, and the chiller outputs cooling water to cool down the variable-frequency power supply and the electromagnetic induction device;

[0017] Step 5: After the heating is completed, reset the electromagnetic induction heating coil, turn off the power supply, and drain the water from the chiller.

[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0019] 1. The rotating connector in the electromagnetic induction heating coil included in the leveling system of the present invention can achieve a rotation of 30° to -30°, thus overcoming the drawback that the heating coil in the prior art is a flat integral body and is limited in bending. It has high processing efficiency and a simple structure.

[0020] 2. A rotating connector is provided in the electromagnetic induction heating device of the leveling machine of the present invention. The rotating connector includes a slip ring and a brush for ensuring power supply to the arc-shaped bendable body, and includes an inner slide rail, an outer slide rail, and a motor to ensure the rotation of the coil unit. The rotating connector solves the movement of the arc-shaped bendable body and the transmission of current.

[0021] 3. The present invention is provided with a chiller to reduce the heat generated during the operation of the variable-frequency power supply and the induction heating device.

[0022] 4. The variable-frequency power supply of the present invention is separately encapsulated and arranged above the outside of the chiller. Thus, the chiller and the variable-frequency power supply are separately arranged to avoid potential safety hazards caused by water leakage of the chiller.

[0023] 5. An installation fixture for a sensor can be provided on the coil unit in the electromagnetic induction device of the leveling system of the present invention to detect distances, etc., and has good functional expandability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the front view of an electromagnetic induction heating type leveling system of the present invention.

[0025] Figure 2 is Figure 1 the rear view of an electromagnetic induction heating type leveling system of the present invention as shown.

[0026] Figure 3 It is the connection schematic diagram of the hand-held coaxial transformer and the electromagnetic induction heating coil of the electromagnetic induction heating device of an embodiment of the present invention.

[0027] Figure 4 It is the front view of the electromagnetic induction heating coil of an embodiment of the present invention.

[0028] Figure 5 It is a schematic structural diagram of a rotary connection unit in an electromagnetic induction heating coil according to an embodiment of the present invention.

[0029] Figure 6 It is a rear view of an electromagnetic induction heating coil in a working state according to an embodiment of the present invention.

[0030] Among them, there are a leveling machine 100, a chiller 110, a variable frequency power supply 120, a first water pipe assembly 111, a first wire assembly 112, a second water pipe assembly 113, a third water pipe assembly 114, a second wire assembly 115; an electromagnetic induction heating device 200, a handheld coaxial transformer 210, an electromagnetic induction heating coil 220, a hollow long cylinder 221, a bendable body 222, a water inlet and outlet 223, a hose 224, a drag chain 225, a cavity pipeline 226, a rotary connector 230, an inner slide rail 231, a brush 232, a slip ring 233, an outer slide rail 234, and a motor 235. Specific embodiments

[0031] As Figure 1 shown, an electromagnetic induction heating type leveling system of the present invention includes a leveling machine 100 and an electromagnetic induction heating device 200, and works on the area to be leveled through the principle of electromagnetic induction.

[0032] As Figure 2As shown in the figure, an electromagnetic induction heating type leveling system of the present invention, the leveling machine 100 includes: a chiller 110, a variable frequency power supply 120, a first water pipe assembly 111, a first wire assembly 112, a second water pipe assembly 113, a third water pipe assembly 114, a second wire assembly 115, and an electromagnetic induction heating device 200. The electromagnetic induction heating device 200 includes a handheld coaxial transformer 210 and an electromagnetic induction heating coil 220 having a bendable body 222. The variable frequency power supply 120 is placed above the chiller 110, and the electromagnetic induction heating coil 220 is at the front end of the handheld coaxial transformer 210. The chiller 110 is connected to the electromagnetic induction heating device 200 through the first water pipe assembly 111 and the second water pipe assembly 113. The electromagnetic induction heating device returns water to the chiller through the third water pipe assembly 114 to form a water flow cycle to cool the electromagnetic induction heating device 200 and the variable frequency power supply 120. The variable frequency power supply 120 supplies power to the chiller 110 and the electromagnetic induction heating device 200 through the first wire assembly 112 and the second wire assembly 115. The electromagnetic induction heating device 200 includes a handheld coaxial transformer 210 and an electromagnetic induction heating coil 220. Its working principle is that the variable frequency power supply 120 provides a high-frequency and high-voltage power supply to the electromagnetic induction heating device 200. The coaxial transformer 210 in the electromagnetic induction heating device 200 converts the high-frequency and high-voltage current into a high-frequency and low-voltage current and supplies it to the electromagnetic induction heating coil 220. When the current passes through the electromagnetic induction heating coil, a strong induced current, that is, eddy current, will be generated, generating huge Joule heat energy in the leveling area, so as to achieve the effect of a flat surface in the leveling area; the chiller 110 is used to cool the heat generated when the electromagnetic induction heating device 200 and the variable frequency power supply 120 work.

[0033] As Figure 3 shown, in the electromagnetic induction heating device 200 of the present invention, the electromagnetic induction heating coil 220 is installed at the groove opening at the front end of the handheld coaxial transformer 210 and is fixed by copper screws 211.

[0034] As Figure 4As shown in the figure, the electromagnetic induction heating coil 220 includes: a cavity long cylinder 221 and a bendable body 222. The cavity long cylinder 221 is made of copper material, and its internal is a cavity pipeline 226. One end of the cavity long cylinder 221 is connected to the hand-held coaxial transformer 210, and the other end is fixed to the bendable body 222. The fixed part divides the bendable body 222 into two equal-length parts in the length direction. A plurality of synchronously rotatable connectors 230 are evenly distributed on both sides of the fixed part; a retractable drag chain 225 is arranged below each rotatable connector 230; under the synchronous rotation of each rotatable connector, the bendable body 222 of the electromagnetic induction heating coil 220 can be driven to bend towards the cavity long cylinder 221. After water flows into the cavity pipeline of the cavity long cylinder 221 through the hand-held coaxial transformer 210, it then flows through the water inlet at one end of each retractable drag chain 225, the lateral hose 224, and the water outlet at the other end in sequence, and finally flows back to the hand-held coaxial transformer 210.

[0035] As Figure 5 As shown in the figure, the rotatable connector 230 of the electromagnetic induction heating coil in the embodiment of the present invention includes an inner slide rail 231, a brush 232, a slip ring 233, an outer slide rail 234, and a motor 235. Both the outer slide rail 234 and the inner slide rail 231 are made of insulating materials and are fixed on the left and right sides of the hollow long cylinder 221 and the bendable body 222 using copper screws 211. The brush 232 and the slip ring 233 respectively pass through the outer slide rail 234 and the inner slide rail 233 and are embedded in the left and right sides of the joint of the bendable body 222 to be responsible for conducting electricity. The motors 235 are evenly distributed above the bendable body 222 and are responsible for driving the inner slide rail 231.

[0036] As Figure 6 As shown in the figure, it is the rear view of the electromagnetic induction heating coil 220 in the working state of the embodiment of the present invention. After the power is turned on, the motor 235 in the rotatable connector 230 drives the inner slide rail 231. The inner slide rail 231 rotates in the outer slide rail 234, and at the same time drives the bendable body 222 and the brush 232 fixed thereto to rotate, and stops at an appropriate angle. The brush 232 always maintains stable contact with the slip ring 233 during the movement to ensure the stability of the circuit connection.

[0037] The rotatable connector 230 in the present invention can achieve a rotation of -30° to 30°, thereby driving the bendable body 222 of the induction heating coil 220 to bend.

[0038] An electromagnetic induction heating type leveling method of the present invention includes the following steps:

[0039] Step 1: Connect the power supply, and turn on the frequency conversion power supply 120 of the leveling system.

[0040] Step 2: Move the electromagnetic induction heating device 200 to the area to be leveled, and adjust the arc-bendable body of the electromagnetic induction heating coil 220 to a curvature matching that of the area to be leveled through the rotating connector 230;

[0041] Step 3: Activate the heating function, and the output of the variable frequency power supply 120 is transmitted to the electromagnetic induction heating device through the second wire assembly 115.

[0042] Step 4: Start the chiller 110, and the chiller 110 outputs cooling water to cool down the variable frequency power supply and the electromagnetic induction device.

[0043] Step 5: After heating is completed, reset the electromagnetic induction heating coil 220, turn off the power supply, and drain the water from the chiller 110.

Claims

1. An electromagnetic induction heating type leveling system, characterized in that, It includes a car leveling machine (100) that works on the area requiring car leveling through the principle of electromagnetic induction. The described car leveling machine (100) includes a chiller (110), a variable frequency power supply (120), a first water pipe assembly (111), a first wire assembly (112), a second water pipe assembly (113), a third water pipe assembly (114), a second wire assembly (115), and an electromagnetic induction heating device (200); the electromagnetic induction heating device (200) includes a handheld coaxial transformer (210) and an electromagnetic induction heating coil (220) with a bendable body (222); the variable frequency power supply (120) is arranged above the chiller (110); the chiller (110) is connected to the electromagnetic induction heating device (200) through the first water pipe assembly (111) and the second water pipe assembly (113), and the electromagnetic induction heating device (200) returns water to the chiller through the third water pipe assembly (114) to form a water flow cycle to cool the electromagnetic induction heating device (200) and the variable frequency power supply (120); the variable frequency power supply (120) supplies power to the chiller (110) and the electromagnetic induction heating device (200) through the first wire assembly (112) and the second wire assembly (115). The electromagnetic induction heating coil (220) is fixed at the front end of the handheld coaxial transformer (210). The electromagnetic induction heating coil (220) is installed in the groove opening at the front end of the handheld coaxial transformer (210) and is fixed by screws (211). The electromagnetic induction heating coil (220) includes a cavity long cylinder (221) and a bendable body (222); the cavity long cylinder (221) is made of copper material with a cavity pipeline (226) inside; one end of the cavity long cylinder (221) is connected to the handheld coaxial transformer (210), and the other end is fixed to the bendable body (222), and this fixed part divides the bendable body (222) into two equal-length parts in the length direction; a plurality of synchronously rotatable connectors (230) are evenly distributed on both sides of the fixed part; a telescopic drag chain (225) is arranged below each rotating connector (230); under the synchronous rotation of each rotating connector (230), the bendable body (222) of the electromagnetic induction heating coil (220) can be driven to bend towards the cavity long cylinder (221); after water flows into the cavity pipeline of the cavity long cylinder (221) through the handheld coaxial transformer (210), it then flows through the water inlet at one end of each telescopic drag chain (225), the lateral hose (224), and the water outlet at the other end in sequence, and finally flows back to the handheld coaxial transformer (210).

2. The electromagnetic induction heating type leveling system according to claim 1, characterized in that The described rotary connector (230) includes an inner slide rail (231), a brush (232), a slip ring (233), an outer slide rail (234), and a motor (235); both the outer slide rail (234) and the inner slide rail (231) are made of insulating materials and are fixed to the left and right sides of the hollow long cylinder (221) and the arc-shaped bendable body (222) using copper screws (211); the brush (232) and the slip ring (233) pass through the outer slide rail (234) and the inner slide rail (233) respectively and are embedded in the left and right sides of the joint of the arc-shaped bendable body (222); the motors (235) are evenly distributed above the arc-shaped bendable body (222) and are responsible for driving the inner slide rail (231); during operation, the motor (235) drives the inner slide rail (231), the inner slide rail (231) rotates in the outer slide rail (234), and at the same time drives the arc-shaped bendable body (222) and the brush (232) fixed thereto to rotate and stop at an appropriate angle. The brush (232) always maintains stable contact with the slip ring (233) during the movement, ensuring the stability of the circuit connection.

3. A kind of electromagnetic induction heating type leveling system according to claim 2, characterized in that, The rotation angle range of the described rotary connector (230) is from -30° to 30°.

4. An electromagnetic induction heating type leveling method, characterized in that, An electromagnetic induction heating type leveling system as claimed in claims 1-3 is adopted, including a leveling machine (100) that works on the area to be leveled through the principle of electromagnetic induction; the leveling machine (100) includes a chiller (110), a variable frequency power supply (120), a first water pipe assembly (111), a first wire assembly (112), a second water pipe assembly (113), a third water pipe assembly (114), a second wire assembly (115), and an electromagnetic induction heating device (200); the electromagnetic induction heating device (200) includes a hand-held coaxial transformer (210) and an electromagnetic induction heating coil (220) having an arc-shaped bendable body (222); the variable frequency power supply (120) is arranged above the chiller (110); the chiller (110) is connected to the electromagnetic induction heating device (200) through the first water pipe assembly (111) and the second water pipe assembly (113), and the electromagnetic induction heating device (200) returns water to the chiller (110) through the third water pipe assembly (114) to form a water flow cycle to cool the electromagnetic induction heating device (200) and the variable frequency power supply (120); the variable frequency power supply (120) supplies power to the chiller (110) and the electromagnetic induction heating device (200) through the first wire assembly (112) and the second wire assembly (115); The described method includes the following steps: Step 1: Connect the power supply and turn on the variable frequency power supply (120) of the leveling system; Step 2: Move the electromagnetic induction heating device (200) to the area to be leveled, and adjust the arc-shaped bendable body (222) of the electromagnetic induction heating coil (220) to a curvature matching the curvature of the area to be leveled through the rotary connector (230); Step 3: Start the heating function, and the output of the variable frequency power supply (120) is transmitted to the electromagnetic induction heating device (200) through the second wire assembly (115); Step 4: Start the chiller (110), and the chiller (110) outputs cooling water to cool the variable frequency power supply (120) and the electromagnetic induction heating device (200); Step 5: After the heating is completed, reset the electromagnetic induction heating coil (220), turn off the power supply, and drain the water from the chiller (110).

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