SU546066A1 - Unipol rna machine - Google Patents

Description

the generator load is made by sliding the contact on the base of fixed u, then, to 10, installed in the brush holders (two for each parallel bridge). The contact pressing of the rollers of the brushes is due to the elasticity of the core conductors 7 or by means of special springs, as with the brushes 10 (the springs are not shown in the drawing). The taps // from the brushes 10 pass through a .radial hole in the cryostat. The winding of the core contains, for example, rods.

In order to make it possible to apply roller rolling contacts, the rolling surfaces of both collectors are turned inside the machine to the mid-plane of the core. This allows these surfaces to be brought closer to the coils / and to increase the efficiency of use of the excitation magnetic flux. Since the axes of the core rods 7 should be directed along the forming surface of a circular cylinder (either a cone or a circle radius in disk machines), in the core winding with parallel branches the rods are placed at an angle of 8 najK. glad. This means that the end of the rod on the collector is shifted relative to its beginning (on the other collector) by an angle corresponding to 4a collector divisions. Practically, the number of branches 2a 2 has a shift of -yet.re divisions. This sdzig provides the correct winding connections.

The machine works as follows. A super-current coil / inductor connected in series, magnetically connected in opposite directions, is supplied with a current from the power source which creates a magnetic excitation flux. When the branches are connected // to the power source of the power circuit, the machine works like an engine, and when the rotor rotates from the drive unit, it acts like a generator. It is possible to attach a mechanical load to the motor shaft, to the outlet m // - electrical resistance of the generator,

When the rotor rotates, the conductors 7 also rotate under the influence of frictional forces between the manifolds and roller brushes 8. The movable rolling contact has considerably less friction loss and causes less wear of the brushes and collectors. - In the proposed mask, slip contact takes place only on four non-disposable brushes 10, located two (through one plate) on each collector. They are required for connection to the rotating core of an external fixed circuit -. All other mobile contacts, the total number of which in large machines is several tens (and can reach up to one hundred ontacts and more), are made on rolling elements 8. Thus, the efficiency and service life are the proposed machine will be significantly higher than the prototype

(with the same numbers of moving contacts).

In the process of rotor rotation, the movable contacts on the collectors carry out the switching of the rods 3, with which in a parallel branch of the winding separate rods or their pairs are connected periodically with brushes 8 and 10 of two adjacent collector plates. FIG. Figure 2 shows as an example the instant connection diagram, in which rods 12-7: 5 enter the parallel branch beginning on the bottom left brush W (plus). This branch ends on the left.

5 top brush 10 (minus). The rods 16-19 enter into another parallel branch.

To avoid the occurrence of unacceptably large jet e in rods. d. when switching roller brushes collector

The plates 4 can be made with a certain bevel of the dividing tracks to increase the time of contact of the roller with two adjacent plates. With relatively large core currents, deformable rolling elements, such as conductive plastics or rubber, can be used to increase the surface area of the contact surface.

Similarly, you can perform

0 and disc measles of a unipolar machine with roller rolling contacts, radial (or cone-forming) arrangement of rod connecting conductors and bevel winding rods at a specified angle

5 (8 YaS // With glad). At the same time, the collectors at the periphery and in the central part of the rotor disk must have different axial lengths, and the rollers at the ends of the conductors must have different diameters, in order to ensure identical angular speeds of the rollers on both collectors (to avoid twisting of the connecting conductors).

Practical use of the proposed machines is preferable as a super5 conductor of unipolar motors for low-speed drives of rolling mills; propellers on ships; large water pumps; spherical coal grinding mills. As generators, the proposed machines can be used in the respective GD systems.

Formula of invention

five

A unipolar machine containing a superconductor inductor, parallel vetsi rod windings on the crust, the rods of which are connected at their ends with two headers, and two fixed brushes on

0 each m collector, installed through one collector plate and connected to an external circuit, characterized in that, in order to improve the efficiency and increasing the service life, rolling contacts are installed on free collector plates through one lamella, and the winding rods are placed on the crust at an angle of 8 nalKpad, p a - the number of pairs of parallel winding branches, K - the number of plates on the collector. The source of information received at the meeting is for examination. 1. Swiss Patent No. 470795, cl. H 02k 19/18, 1969.

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