Induction heating water-cooling flexible coil

By designing an induction heating water-cooled flexible coil, using high-strength, high-temperature resistant materials and water cooling, the problem of uneven temperature during the assembly and disassembly of large bushings or couplings was solved, achieving uniform heating and preventing damage.

CN223488438UActive Publication Date: 2025-10-28XIANGTAN NANYE MEDIUM FREQUENCY HIGH TECH DEV CO LTD
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Patent Information

Application Number
CN202422879892.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-25
Publication Date
2025-10-28
Estimated Expiration
2034-11-25

AI Technical Summary

Technical Problem

In the assembly and disassembly of large interference fit bushings or couplings, the existing technology of flame heating method is prone to uneven temperature or local overheating, which can cause deformation and damage to the bushing. In addition, the induction coil made of copper tube is not suitable.

Method used

A flexible induction heating water-cooled coil is designed, which uses a high-strength, high-temperature and high-pressure resistant enameled wire braided cable and a high-temperature resistant PVC insulating tube, combined with a high-silica fiber insulating tube that can withstand 1700℃, to form a flexible coil. The coil is induction heated by winding it around a bushing or coupling, and water cooling is used to prevent damage to the coil.

Benefits of technology

It achieves uniform heating of large interference fit bushings or couplings, avoiding deformation and damage, and is suitable for on-site assembly and disassembly. The coil is cooled by water to prevent burnout.

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Abstract

The utility model discloses an induction heating water-cooling flexible coil, which comprises an anode electric bar and a cathode electric bar, an anode copper sleeve is connected onto the anode electric bar, a cathode copper sleeve is connected onto the cathode electric bar, a water inlet joint is mounted on the anode copper sleeve, and a water outlet joint is mounted on the cathode copper sleeve. The two ends of the cable are inserted into the positive copper sleeve and the negative copper sleeve respectively and connected to the positive electrified bar and the negative electrified bar of the electric bars, the two ends of the insulating rubber sleeve are connected to the positive copper sleeve and the negative copper sleeve respectively, and the insulating rubber sleeve wraps the insulating sleeve. The utility model has the following technical effects: the coil is made of a cable and is flexible, the spiral induction coil can be formed by winding the induction coil on an interference fit shaft sleeve or a coupling on a station site, and the shaft sleeve or the coupling is heated through induction heating, so that the spiral induction coil can be mounted or pulled out after being expanded; the device is particularly suitable for assembling and disassembling large interference fit shaft sleeves or couplings, heating is even, deformation and damage of heating parts are avoided, and the coils are cooled in a water passing mode and prevented from being burnt out in the heating process.
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Description

Technical Field

[0001] This utility model relates to an induction heating coil for use in an induction heating device. Background Technology

[0002] In the field of mechanical equipment, the assembly and disassembly of interference fit bushings or couplings typically employ flame heating. A blowtorch is used to heat the bushing around its perimeter, causing it to expand before it can be inserted or removed. This method is generally only suitable for small interference fit bushings or couplings. When assembling or disassembling large interference fit bushings or couplings, uneven heating or localized overheating can easily lead to bushing deformation and damage. Induction heating offers the advantages of rapid and uniform heating. Induction coils are generally made of copper tubing, with the coil's shape varying depending on the object being heated. The workpiece is placed in the induction coil for heating. However, since the assembly and disassembly of interference fit bushings or couplings are usually performed on-site, the copper tubing induction coils are not suitable, especially for large machinery. Utility Model Content

[0003] The purpose of this invention is to provide an induction heating water-cooled flexible coil.

[0004] The technical solution of this utility model is: an induction heating water-cooled flexible coil, including a positive electrode busbar and a negative electrode busbar, a positive copper sleeve connected to the positive electrode busbar and a negative copper sleeve connected to the negative electrode busbar, a water inlet connector installed on the positive copper sleeve and a water outlet connector installed on the negative copper sleeve, the two ends of a cable being inserted into the positive copper sleeve and the negative copper sleeve respectively and connected to the positive electrode busbar and the negative electrode busbar, the two ends of an insulating rubber sleeve being connected to the positive copper sleeve and the negative copper sleeve respectively, and an insulating tube sleeve wrapped around the insulating rubber sleeve.

[0005] The cable is a braided cable made of 100 to 5000 thousand 0.44mm high-strength, high-temperature and high-pressure resistant enameled wires.

[0006] The insulating sleeve is a high-strength, high-temperature resistant PVC insulating sleeve.

[0007] The insulating sleeve is a high-silica fiber insulating sleeve that can withstand 1700℃.

[0008] This utility model has the following technical advantages: The coil is made of cable and is flexible. It can be wound around an interference fit bushing or coupling to form a spiral induction coil at the work site. Through induction heating, the bushing or coupling is heated and expanded, allowing it to be installed or pulled out. It is particularly suitable for assembling and disassembling large interference fit bushings or couplings. The heating is uniform and will not cause deformation or damage to the heating components. The coil is cooled by water to prevent it from burning out during the heating process. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the induction heating water-cooled cable of this utility model.

[0010] Figure 2 yes Figure 1 AA section view.

[0011] Figure 3 yes Figure 1 AA top view.

[0012] Figure 4 This is a diagram showing the usage state of this utility model. Detailed Implementation

[0013] like Figure 1 , Figure 2 , Figure 3 As shown, an induction heating water-cooled flexible coil includes a positive electrode busbar 1 and a negative electrode busbar 1-1. A positive copper sleeve 2 is connected to the positive electrode busbar 1, and a negative copper sleeve 2-1 is connected to the negative electrode busbar 1-1. A water inlet connector 3 is installed on the positive copper sleeve 2, and a water outlet connector 3-1 is installed on the negative copper sleeve 2-1. The two ends of a cable 4 are respectively inserted into the positive copper sleeve 2 and the negative copper sleeve 2-1 and connected to the positive electrode busbar 1 and the negative electrode busbar 1-2. The two ends of an insulating rubber sleeve 5 are respectively connected to the positive copper sleeve 2 and the negative copper sleeve 2-1, and an insulating tube 6 is wrapped around the insulating rubber sleeve 5.

[0014] The cable 4 is a braided cable made of 100 to 5000 thousand 0.44mm high-strength, high-temperature and high-pressure resistant enameled wires.

[0015] The insulating sleeve 5 is a high-strength, high-temperature resistant PVC insulating sleeve.

[0016] The aforementioned insulating sleeve 6 is a high-silica fiber insulating sleeve that can withstand 1700℃.

[0017] The working principle of this utility model is as follows: When installing or disassembling the interference fit shaft or coupling 9, the induction heating water-cooled flexible coil is wound around the interference fit shaft or coupling 5 to form an induction coil. The positive terminal busbar 1 is connected to the load of the electrical control cabinet via the negative terminal busbar 1-1. The water inlet connector 3 of the positive copper sleeve 2 is connected to the water pump 10, and the water outlet connector 3-1 is connected to the circulating cooling water tank 11. When started, the induction coil formed on the interference fit shaft or coupling 9 induction heats the shaft or coupling 9, causing it to expand, so that it can be installed or pulled out.

Claims

1. An induction heating water-cooled flexible coil, characterized in that: Includes a positive electrode busbar (1) and a negative electrode busbar (1-1). A positive copper sleeve (2) is connected to the positive electrode busbar (1), and a negative copper sleeve (2-1) is connected to the negative electrode busbar (1-1). A water inlet connector (3) is installed on the positive copper sleeve (2), and a water outlet connector (3-1) is installed on the negative copper sleeve (2-1). The two ends of the cable (4) are inserted into the positive copper sleeve (2) and the negative copper sleeve (2-1) respectively and connected to the positive electrode busbar (1) and the negative electrode busbar (1-1). The two ends of the insulating rubber sleeve (5) are connected to the positive copper sleeve (2) and the negative copper sleeve (2-1) respectively. An insulating tube sleeve (6) is wrapped around the insulating rubber sleeve (5).

2. The induction heating water-cooled flexible coil according to claim 1, characterized in that: The cable (4) is a braided cable made of 100 to 5000 thousand 0.44mm high-strength, high-temperature and high-pressure enameled wires.

3. The induction heating water-cooled flexible coil according to claim 1, characterized in that: The insulating sleeve (5) is a high-strength and high-temperature resistant PVC insulating sleeve.

4. The induction heating water-cooled flexible coil according to claim 1, characterized in that: The insulating sleeve (6) is a high-silica fiber insulating sleeve that can withstand 1700℃.