High-power medium-high frequency induction heating disassembly and assembly interference fit large shaft or coupler equipment

Abstract

The invention discloses high-power medium-high-frequency induction heating equipment for disassembling and assembling an interference fit large shaft or coupler, which comprises an electric control cabinet, a water pump and a circulating water tank, and a high-power medium-high-frequency induction heating circuit is arranged in the electric control cabinet. The invention has the following technical effects: through induction heating, the induction heating cable is wound on the interference fit shaft sleeve or coupling to form an induction heating coil, the shaft sleeve or coupling is heated to expand so as to be assembled or pulled out, and the induction heating cable is especially suitable for assembling and disassembling large interference fit shaft sleeves or couplings and is uniform in heating. And the induction heating cable is cooled by water, so that the induction heating cable is prevented from being damaged due to over-high temperature. The induction coil is made of a cable and is flexible, the induction coil can be wound on an interference fit shaft sleeve or a coupler on a station site to form a spiral induction coil, and the spiral induction coil is particularly suitable for mounting and dismounting of a large-scale interference fit shaft sleeve or coupler.

Description

Technical Field

[0001] The invention relates to an induction heating device. Background Art

[0002] In the field of mechanical equipment, the assembly and disassembly of interference fit sleeves or couplings are all done by flame heating. A blowtorch is used to heat the sleeves around them to expand them so that they can be installed or pulled out. This is generally only suitable for small-fit sleeves or couplings. When assembling and disassembling large interference fit sleeves or couplings, uneven heating temperatures or excessive local temperatures can easily cause the sleeves to deform and cause damage. Summary of the invention

[0003] The purpose of the invention is to provide an induction heating disassembly and assembly device for an interference fit large shaft or a coupling.

[0004] The technical solution of the present invention is: a high-power medium-high frequency induction heating disassembly and assembly interference fit large shaft or coupling equipment, including an electric control cabinet, a water pump, and a circulating water tank. A high-power medium-high frequency induction heating circuit is installed in the electric control cabinet, and the load of the high-power medium-high frequency induction heating circuit is connected to an induction heating water-cooling induction coil. The induction heating water-cooling induction coil includes a positive electrode busbar and a negative electrode busbar. A positive copper sleeve is connected to the positive electrode busbar, and a negative copper sleeve is connected to the negative electrode busbar. A water inlet joint is installed on the positive copper sleeve, and a water outlet joint is installed on the negative copper sleeve. Two ends of the cable are respectively inserted into the positive copper sleeve and the negative copper sleeve and connected to the positive electrode busbar and the negative electrode busbar. Two ends of the insulating rubber sleeve are respectively connected to the positive copper sleeve and the negative copper sleeve, and the insulating sleeve is wrapped with an insulating rubber sleeve.

[0005] The high-power medium and high-frequency induction heating circuit includes: a three-phase rectifier bridge, an IGBT inverter drive, an IGBT half-bridge inverter, a mainboard PLC, a touch screen, and a switching power supply; three-phase power supplies A, B, and C are connected to the A, B, and C ends of the three-phase rectifier bridge, and the three-phase rectifier bridge is connected to the IGBT half-bridge inverter. A pre-charging resistor R1, a charging relay coil J, a filter circuit, and a RC absorption circuit are connected between the three-phase rectifier bridge and the IGBT half-bridge inverter. The filter circuit is composed of a parallel filter capacitor C1 and a discharge resistor R2. The RC absorption circuit includes capacitors C2 and C3 connected in series, and resistors R3 and R4 connected in series. Capacitors C2 and C3 are connected in parallel with series resistors R3 and R4, and capacitors C2 and C3 are connected to resistors R3 and R4; the IGBT half-bridge inverter is connected to the induction coil L2; the charging The Kc1 and Kc2 terminals of the relay coil J are connected to the Kc1 / Kc2 pins of the mainboard PLC, the filter circuit is connected to the input voltage detection pin of the mainboard PLC, the IGBT inverter drive is respectively connected to the IGBT half-bridge inverter and the inverter drive pins of the mainboard PLC, the touch screen is connected to the Rs485 pin of the mainboard PLC, the switch power supply is connected to the DC24V pin of the mainboard PLC, the input current sampling coil L1 is connected to the three-phase power supply, the current sampling coil L1 is connected to the input current detection pin of the mainboard PLC, the three-phase power supply A, B, C are connected to the A, B, C three-phase detection pins of the mainboard PLC; the output current sampling coil L3 is connected to the connection terminal of the GBT half-bridge inverter and the induction coil L2, the current sampling coil L3 is connected to the output current detection pin of the mainboard PLC; the start, stop and detection buttons are connected to the signal input pin of the mainboard PLC.

[0006] The cable is a braided cable formed by 100 to 5000 thousand 0.44mm high-strength, high-temperature and high-pressure resistant enameled wires.

[0007] The insulating rubber sleeve is a high-strength and high-temperature resistant PVC insulating rubber sleeve.

[0008] The insulating sleeve is a high-silica fiber insulating sleeve resistant to 1700°C.

[0009] The present invention has the following technical effects: through induction heating, the induction heating cable is wound around an interference fit sleeve or coupling to form an induction heating coil, and the sleeve or coupling is heated to expand so that it can be loaded or pulled out, which is particularly suitable for assembling and disassembling large interference fit sleeves or couplings, and the heating is uniform. It will not cause deformation and damage to the heating components, and the induction heating cable is cooled by water to avoid damage to the induction heating cable due to excessive temperature. The induction coil is made of cable and is flexible. The induction coil can be wound around the interference fit sleeve or coupling at the work station to form a spiral induction coil, which is particularly suitable for the installation and disassembly of large interference fit sleeves or couplings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1It is a structural schematic diagram of the present invention.

[0011] Figure 2 It is a schematic diagram of the structure of the induction heating water-cooling cable of the present invention.

[0012] Figure 3 yes Figure 2 AA section view of the .

[0013] Figure 4 yes Figure 2 Top view of the .

[0014] Figure 5 This is a high-power medium and high frequency induction heating circuit diagram of the present invention. DETAILED DESCRIPTION

[0015] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a high-power medium-high frequency induction heating disassembly and assembly interference fit large shaft or coupling equipment comprises an electric control cabinet 1, a water pump 3, and a circulating water tank 4. A high-power medium-high frequency induction heating circuit 1-1 is installed in the electric control cabinet 1. The high-power medium-high frequency induction heating circuit load is connected to an induction heating water-cooling cable 2. The induction heating water-cooling cable has electric bus 2-1 at both ends, and a copper sleeve 2-2 is connected to the electric bus 2-1. The copper sleeves 2-2 at both ends are respectively provided with water inlet joints 2-4 and water outlet joints 2-7. Both ends of the cable 2-3 are inserted into the copper sleeve 2-2 and connected to the electric bus 2-1. An insulating rubber sleeve 2-5 is connected to the copper sleeve 2-2, and an insulating pipe sleeve 2-6 is wrapped around the insulating rubber sleeve 2-5; one end of the water inlet pipe of the water pump 3 is connected to the water inlet joint 2-4, and the other end is connected to the water outlet 4-2 of the circulating cooling water tank 4; one end of the return pipe is connected to the water outlet joint 2-7 and the other end is connected to the water inlet 4-1 of the circulating cooling water tank 4.

[0016] The high-power medium and high-frequency induction heating circuit includes: a three-phase rectifier bridge, an IGBT inverter drive, an IGBT half-bridge inverter, a mainboard PLC, a touch screen, and a switching power supply; three-phase power supplies A, B, and C are connected to the A, B, and C ends of the three-phase rectifier bridge, and the three-phase rectifier bridge is connected to the IGBT half-bridge inverter. A pre-charging resistor R1, a charging relay coil J, a filter circuit, and a RC absorption circuit are connected between the three-phase rectifier bridge and the IGBT half-bridge inverter. The filter circuit is composed of a parallel filter capacitor C1 and a discharge resistor R2. The RC absorption circuit includes capacitors C2 and C3 connected in series, and resistors R3 and R4 connected in series. Capacitors C2 and C3 are connected in parallel with series resistors R3 and R4, and capacitors C2 and C3 are connected to resistors R3 and R4; the IGBT half-bridge inverter is connected to the induction coil L2; the charging The Kc1 and Kc2 terminals of the relay coil J are connected to the Kc1 / Kc2 pins of the mainboard PLC, the filter circuit is connected to the input voltage detection pin of the mainboard PLC, the IGBT inverter drive is respectively connected to the IGBT half-bridge inverter and the inverter drive pins of the mainboard PLC, the touch screen is connected to the Rs485 pin of the mainboard PLC, the switch power supply is connected to the DC24V pin of the mainboard PLC, the input current sampling coil L1 is connected to the three-phase power supply, the current sampling coil L1 is connected to the input current detection pin of the mainboard PLC, the three-phase power supply A, B, C are connected to the A, B, C three-phase detection pins of the mainboard PLC; the output current sampling coil L3 is connected to the connection terminal of the GBT half-bridge inverter and the induction coil L2, the current sampling coil L3 is connected to the output current detection pin of the mainboard PLC; the start, stop and detection buttons are connected to the signal input pin of the mainboard PLC.

[0017] The induction heating water-cooling cable is a braided cable formed by 100 to 5000 thousand 0.44mm high-strength, high-temperature and high-pressure resistant enameled wires.

[0018] The insulating rubber sleeves 2-5 are high-strength and high-temperature resistant PVC insulating rubber sleeves.

[0019] The insulating sleeve 2-6 is a high-silica fiber insulating sleeve resistant to 1700°C.

[0020] The working principle of the present invention is as follows: when installing or disassembling the interference fit large shaft or coupling 5, the induction heating water cooling cable 2 is wound around the interference fit large shaft or coupling 5 to form an induction heating coil, the load of the high-power medium and high frequency induction heating circuit 1-1 is connected to the electric bus 2-1 of the induction heating water cooling cable 2, the water inlet joint 2-4 and the water outlet joint 2-7 of the copper sleeve 2-2 are connected to the water pump 3 and the circulating cooling water tank 4, and the system is started. The induction heating water cooling cable 2 is wound around the interference fit large shaft or coupling 5 to form an induction heating coil, the large shaft or coupling 5 is inductively heated to expand, and then the large shaft or coupling 5 can be loaded or pulled out.

Claims

1. A high-power medium-high frequency induction heating device for disassembling and assembling an interference fit large shaft or coupling, comprising an electric control cabinet (1), a water pump (3), and a circulating water tank (4), wherein a high-power medium-high frequency induction heating circuit (1-1) is installed in the electric control cabinet (1), and characterized in that: The load of the high-power medium-high frequency induction heating circuit (1-1) is connected to an induction heating water-cooling induction coil (2), wherein the induction heating water-cooling induction coil (2) comprises a positive electrode busbar (2-1), a negative electrode busbar (2-11), a positive copper sleeve (2-2) connected to the positive electrode busbar (2-1), a negative copper sleeve (2-21) connected to the negative electrode busbar (2-11), and a water inlet joint (2-4) installed on the positive copper sleeve (2-2). A water outlet joint (2-41) is installed on the negative copper sleeve (2-21), two ends of the cable (2-3) are respectively inserted into the positive copper sleeve (2-2) and the negative copper sleeve (2-21) and connected to the positive electrode bus (2-1) and the negative electrode bus (2-11), two ends of the insulating rubber sleeve (2-5) are respectively connected to the positive copper sleeve (2-2) and the negative copper sleeve (2-21), and the insulating sleeve (2-6) is wrapped around the insulating rubber sleeve (2-5).

2. According to claim 1, a high-power medium-high frequency induction heating disassembly and assembly of interference fit large shafts or couplings equipment, characterized in that: The high-power medium and high-frequency induction heating circuit includes: a three-phase rectifier bridge, an IGBT inverter drive, an IGBT half-bridge inverter, a mainboard PLC, a touch screen, and a switching power supply; three-phase power supplies A, B, and C are connected to the A, B, and C ends of the three-phase rectifier bridge, and the three-phase rectifier bridge is connected to the IGBT half-bridge inverter. A pre-charging resistor R1, a charging relay coil J, a filter circuit, and a RC absorption circuit are connected between the three-phase rectifier bridge and the IGBT half-bridge inverter. The filter circuit is composed of a parallel filter capacitor C1 and a discharge resistor R2. The RC absorption circuit includes capacitors C2 and C3 connected in series, and resistors R3 and R4 connected in series. Capacitors C2 and C3 are connected in parallel with series resistors R3 and R4, and capacitors C2 and C3 are connected to resistors R3 and R4; the IGBT half-bridge inverter is connected to the induction coil L2; the charging The Kc1 and Kc2 terminals of the relay coil J are connected to the Kc1 / Kc2 pins of the mainboard PLC, the filter circuit is connected to the input voltage detection pin of the mainboard PLC, the IGBT inverter drive is respectively connected to the IGBT half-bridge inverter and the inverter drive pins of the mainboard PLC, the touch screen is connected to the Rs485 pin of the mainboard PLC, the switch power supply is connected to the DC24V pin of the mainboard PLC, the input current sampling coil L1 is connected to the three-phase power supply, the current sampling coil L1 is connected to the input current detection pin of the mainboard PLC, the three-phase power supply A, B, C are connected to the A, B, C three-phase detection pins of the mainboard PLC; the output current sampling coil L3 is connected to the connection terminal of the GBT half-bridge inverter and the induction coil L2, the current sampling coil L3 is connected to the output current detection pin of the mainboard PLC; the start, stop and detection buttons are connected to the signal input pin of the mainboard PLC.

3. According to claim 1, a high-power medium-high frequency induction heating disassembly and assembly of interference fit large shafts or couplings equipment, characterized in that: The cable (2-3) is a braided cable formed by 100 to 5000 thousand 0.44 mm high-strength, high-temperature and high-pressure resistant enameled wires.

4. According to claim 1, a high-power medium-high frequency induction heating disassembly and assembly of interference fit large shafts or couplings equipment, characterized in that: The insulating rubber sleeve (2-5) is a high-strength and high-temperature resistant PVC insulating rubber sleeve.

5. According to claim 1, a high-power medium-high frequency induction heating disassembly and assembly of interference fit large shafts or couplings equipment, characterized in that: The insulating sleeve (2-6) is a high-silica fiber insulating sleeve resistant to 1700°C.

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