SU1300284A2 - Detachable induction unit - Google Patents

Abstract

The invention relates to metallurgy, in particular, to the construction of induction 1x channel furnaces with detachable induction units. The purpose of the invention is to reduce the build-up of slag on the channel walls. The induction unit is equipped with an additional coil 5, which is powered from an external source of alternating voltage with the ability to control the magnitude and phase of the current. The current flowing through the coil 5 creates its own magnetic field, which interacts with the magnetic field of dissipation of the coil 4 of the inductor, and rotates the magnetic field, which allows reducing the buildup on the channel walls, improving the quality, increasing the service life of the furnace lining, and increasing productivity smelting process. 4 il. which is shifted in phase space by 90, creating i (O KZ in fig .;

Description

The invention relates to metallurgy, in particular, to the construction of induction channel furnaces by detachable induction units.

The purpose of the invention is to reduce the amount of slag tannin on the walls of the channel.

Fig. 1 schematically shows an induction unit disconnection; figure 2 - section aa in figure 1; on fig.Z - power lines of a magnetic-10 l coil with current; Figures 4 and 5 of the coil circuit with attachment devices.

Detachable induction unit

on the product of the current by the VITKOR number of coil 5. In Fig. 3, the magnetic field of the scattering of inductor coil 4 is shown with solid lines, and the magnetic field B, coil 5 with dotted lines. As a result of the superposition of the fields B. and B, which are shifted relative to each other in phase and in space by 90, a rotating magnetic field is created. The magnitude of the wrap produced (the actual moment, and hence the rotational speed of the molten metal, depends on the magnitude of the current in the coil and its phase shift relative to the channel portion of the U-shaped string t5, consisting of longitudinal channels 1 and transverse channel 2. The longitudinal and transverse channels enclose the core of the magnetic core 3 with the coil 4 and are made of refractory material. The longitudinal channel 1 is enclosed by the coil 5 connected to an external voltage source, which is not provided. The coil 5 is wound steklovopoknistoy cloth.

In one-sided design, the coil 5 is fastened to the longitudinal channel by means of clamps 6, which are tightened by special devices 7. In the case of double-sided fastening, the coils are fastened with tightening clamps 8.

The device works as follows.

in a way.

The coil 5 is powered from an external source of alternating voltage with the ability to control the magnitude and phase of the current. The current flowing through the nq coil 5 creates its own magnetic field, the magnitude of which is proportional to

on the product of the current by the VITKOR number of coil 5. In Fig. 3, the magnetic field of the scattering of inductor coil 4 is shown with solid lines, and the magnetic field B, coil 5 with dotted lines. As a result of the superposition of the fields B. and B, which are shifted relative to each other in phase and in space by 90, a rotating magnetic field is created. The magnitude of the wrap produced (the effective moment, and hence the rotational speed of the molten metal, depends on the magnitude of the current in the coil and its phase shift relative to

duktora. The current is controlled by the voltage regulator, and the current phases by the phase shifter, for example

capacitor banks.

Installing an additional coil, voltage regulator and phase shifting device reduces the build-up of slag on the channel walls by smoothly adjusting the speed and torque of the liquid metal in the channel, which improves the quality of the metal, increases the service life of the furnace fi-i and increases the productivity of the smelting process.

Claims (1)

Invention Formula  The induction unit is detached according to the ed. St. No. 665193,, about tl and h and sh - so that, in order to reduce the growth of slag on the channel walls, the induction unit is equipped with an additional coil, covering the longitudinal channel and connected to an external voltage source. Aa Fi.2 Rag.z eight 9g Editor K. Voloshchuk Compiled by M.Vilkov Tehred M. Khodanich Proofreader A.T. Order P38 / 38 Circulation 544 Subscription VNIIPI USSR State Committee for Inventions and Discoveries 4/5, Moscow, Zh-35, Raushsk nab. 113035 Production and printing company, Uzhgorod, st. Project, 4 (PuB.S