Medium-frequency induction heating device of nuclear power main steam super pipeline mouthpiece

Abstract

The invention discloses a medium-frequency induction heating device of a nuclear power main steam super pipeline mouthpiece, which is used for heating the nuclear power main steam super pipeline mouthpiece. The device consists of an induction heating power supply, a water cooling system, an induction coil and a temperature measurement device, and is fixed on a mobile platform vehicle with a height adjusting function. The induction heating power supply outputs medium-frequency constant induction current; the induction coil is perpendicular to the advance direction of the platform vehicle, is close to a prefabricated hole of a mother pipe for heating, and can go up and down as the mouthpiece molding process. A coil-shaped (mosquito-repellent incense shaped) structure is adopted for an inductor; an air cooling structure is adopted for the whole device; the water cooling system is adopted for the inductor; the whole device has functions of short circuit, overload, overpressure and over-temperature protection and restriction, and has a failure alarming function. The device is high in heating speed, is small in heat affected zone, is relatively low in oxidation burning loss, is easy in temperature control, and is simple in structure and operation.

Description

technical field [0001] The invention is a heating device for locally heating the prefabricated hole of the main pipe of the main steam super pipeline of nuclear power by adopting the intermediate frequency induction heating technology, which is used in the process of heating the nozzle of the super pipeline of the main steam of nuclear power. Background technique [0002] At present, in the manufacturing process of the main steam super pipe nozzle of nuclear power, the prefabricated hole of the main pipe is generally heated by flame and then drawn and pressed. Using local heating not only saves energy, shortens the process time, but also improves product quality. At present, the main heating device in China is a flame heating device, which uses a local heating device to heat the nozzle. Although the problem of local heating has been solved, the production of the local heating device requires high cost, high difficulty, slow heating speed, and low heating efficiency. The affe...

AI Technical Summary

Problems solved by technology

At present, the main heating device in China is a flame heating device, which uses a local heating device to heat the nozzle. Although the problem of local heating has been solved, the production of the local heating device requires high cost, high difficulty, slow heating speed, low heating efficiency, and high thermal efficiency. The affected area is large, the oxidation burning loss is large, the operation is difficult, and it is inconvenient to use

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