SU1252849A1 - Device for supplying power to rotating objects - Google Patents

Abstract

This invention relates to electrical engineering, in particular to multi-position centrifugal machines. The purpose of the invention is to increase reliability by improving switching conditions. The device contains a power source, a distributor, made in the form of a current collector and an actuator mechanism. The current collector is made in the form of rotating brushes 6 mounted on five fixed conductive rings. Four rings 1–4 are made solid, and the fifth ring 5 is $ 1d (L s).

Description

tirovannymi, rings connected to the source. The contacts of the actuator are connected to brushes mounted on rings 1–4, one terminal of the mechanism windings is connected with a brush mounted on ring 5, and other leads of the mechanism windings

This invention relates to circuits pi. 1; Ani rotating objects, for example, to multi-position centrifugal machines for carousel units.

The purpose of the invention is to increase reliability by improving switching conditions.

Figure 1 shows the power supply scheme of rotating objects for rotary-type multi-station centrifugal machines; figure 2 - the current collector; on fig.Z - section aa in figure 2; in fig. 4. - Section BB in FIG. 2

The scheme contains a power source of electric motors (A, B, C,) and windings of magnetic starters (a ,, o,), an annular current collector XA (Fig. 2 and 3) and magnetic starters KM, -KM, (n is the number of positions of the centrifugal machine ).

The ring current collector XA (Figures 2 and 3) consists of five fixed rings l-5j made on a common ocw. Rotary brushes 6 are mounted on the rings. Three rings 1-3 for powering the electric motors through the brushes 6 and the contacts of the magnetic actuators are electrically connected to the electric motors located on the rotor of the centrifugal machine with magnetic actuators.

Pegs 1-4 are filled with solid ones, one rotating brush is installed on them.

The ring 5 is segmented (fig.Z), and the number of segments corresponds to the number of switching of the electric motor per revolution of the rotor of the centrifugal machine.

The number of brushes 6 segmented ring 5 corresponds to the number of magnetic actuators.

with brushes mounted on rings 1-4. When the rotor of the brush rotates, it goes from the conductive segments to the isolated ones, switching the windings of the mechanism with a minimum sparking of 4 slugs.

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Rings 4 and 5 through brushes 6 are connected with the windings of magnetic starters.

The current collector has minimum dimensions and its diameter does not depend on the number of switched channels.

The scheme works as follows.

Voltages 4 and 5 of the current collector CL are energized to turn on the excitation windings of the starters, but since ring 5 is segmented, only part of the starters whose brushes are located on the conductive segments of the ring 5, including the corresponding part of the motors, turns on.

When the rotor is rotated from the position to the position of the ring brush 5, it switches from the conductive segments to the insulating. Baths, low-current commutations of excitation windings of magnetic starters occur, some of them are turned off and other motors are turned on through continuous rings 1-3, brushes 6 and contacts of magnetic starters, without disturbing the power supply of the other electric motors.

Since rings 1-3 are solid, there is no spark of burning and burning of rings when switching from one segment to another (switching moment). Thus, the proposed power scheme allows you to take the process of switching power circuits beyond the current collector, using magnetic starters thus increasing the reliability of the protection of the brushes against the action of an electric arc at the time of switching, creates conditions for the simultaneous switching of all phases of electric motors, thereby increasing the service life of the latter by 2 times.

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Claims (1)

Invention Formula A power supply device for rotating objects containing a power source, a distributor made in the form of a current collector, and an actuator mounted on the shaft of the object made in the form of magnetic actuators, characterized in that, in order to increase the reliable tee by improving the switching conditions, the current collector made as. rotating brushes mounted 528494 On five fixed current-conducting rings, of which four are solid and fifth are segmented, the rings are connected to the power source 5, and the contacts of the magnetic starters are connected to brushes mounted on the solid rings, one terminal of the windings of the magnetic starters is connected to the brush installed 10 on a solid ring, and each other output is connected to its brush mounted on a segmented ring. Y / l / Editor 0. Head Compiled by S. Shutova Tehred L. Svrdyukova Order 4626/52 Circulation 597 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Proofreader A.Zimokosov