RU74025U1 - DEVICE FOR INDUCTION HEATING - Google Patents

Abstract

The utility model relates to heat engineering, in particular, to equipment for testing parts of complex shape at high temperature.

The technical result, which the utility model is aimed at, is to enable the use of one device for heating parts of various shapes.

A device for induction heating comprises a heating chamber, an induction wire wound over a heating chamber. In the walls of the chamber are channels for the circulation of coolant.

New in the proposed utility model is that the channels are equipped with coolant flow controllers.

The proposed device implements the possibility of using one device for heating parts of various shapes by regulating the flow of coolant and the number of channels involved.

Description

The utility model relates to heat engineering, in particular, to equipment for testing parts of complex shape at high temperature.

A device for induction heating [The use of through induction heating in industry. Ryskin S.E. - L .:

Engineering. Leningra. Otdenie, 1979, p. 7], containing an induction wire having a different number of turns per unit length and a coil configuration selected in accordance with the shape of the tested part, for example, a GTE blade. In such a device, heating occurs by inducing eddy currents from the induction wire into the part. The temperature distribution in the heated part is controlled by changing the configuration of the coil - the smaller the distance between the induction wire and the part, the higher the temperature, and vice versa, as well as by changing the number of turns per unit length of the part - the more turns, the higher the temperature.

However, the presence of distances between the turns of the induction wire leads to uneven heating of the part, the so-called "banded" heating. In addition, it is often not possible to find the optimal configuration of the induction wire, which also leads to uneven heating of the part. Thus, the disadvantages of this device are "banded" heating and the inability to control the temperature distribution in the heated part without changing the configuration of the turns and their number per unit length of the induction wire.

A device for induction heating is also known [USSR Author's Certificate No. 276273, publication date 07/14/1970], comprising a heating chamber, an induction wire wound over the chamber. AT

the walls of the chamber are channels for the circulation of coolant.

In this device, the part is heated by radiation and convection of heat inside the chamber, which is heated by eddy currents induced by the induction wire, which avoids “banded” heating and selection of the configuration of the turns of the induction wire.

In order to cool overheated parts of the part, channels with coolant pass through the walls adjacent to the walls of the chamber.

However, when testing parts of a different shape, it will be necessary to manufacture a device with a different arrangement of channels corresponding to the shape of the heated part. Thus, the disadvantage of this device is the need to manufacture individual devices for heating parts of various shapes.

The technical result, which the utility model is aimed at, is to enable the use of one device for heating parts of various shapes.

The problem is solved as follows.

A device for induction heating comprises a heating chamber, an induction wire wound over a heating chamber. In the walls of the chamber channels are made for the circulation of the coolant.

New in the proposed utility model is that the channels are equipped with coolant flow controllers.

Figure 1 shows a device for induction heating.

Figure 2 is a section aa of figure 1.

A device for induction heating comprises an induction wire 1, wound over a heating chamber 2, in the walls of which there are channels 3 for supplying coolant, part of the channels along the axis, and part across the axis of the device. On the channels 3 installed regulators 4 flow rate of the coolant.

The operation of the device for induction heating is as follows.

For high-temperature tests, a part 5 is installed in the chamber 2, on which thermometers are mounted, for example, thermocouples (not shown in the drawing). After that, the coolant supply to the channels 3 is turned on. The fluid flow through the channels 3 with the help of the regulators 4 is set to an average level. Subsequent switching on of a high-frequency generator (not shown in the drawing) with an induction wire 1 connected to it causes the chamber 2 to heat up, by heating and emitting heat, from which the part 5 is heated. When the flow rate of the coolant passing through channels 3, the temperature of the volumes of the chamber 2 adjacent to the channels changes. And as a result, the temperature in the corresponding areas of the part 5 changes. As a result, the set temperature a tour of the entire volume of the part.

To heat a part of a different shape in the same device, the above procedure is repeated.

In the proposed device, by regulating the flow rate of the coolant and the number of channels involved, it is possible to use one device for heating parts of various shapes.

Claims (1)

A device for induction heating, comprising a heating chamber, an induction wire wound over the heating chamber, channels for cooling fluid circulation are made in the walls of the chamber, characterized in that the channels are equipped with flow controllers for the cooling fluid.