RU1836736C - Chernicovъs transformer with voltage control under load - Google Patents

Abstract

Application: in the field of electrical engineering. SUBSTANCE: device comprises a magnetic wire 1, on which an unregulated winding 2 is placed, on top of which there is a stationary insulating cylinder 3, on the surface of which a groove 4 is made along a helical line, in which coils of the adjustable part of the winding 5 are placed. of the insulating cylinder, a movable insulating sleeve 6 having a groove 7 in which a spring-loaded contact 8 is placed in contact with a wire of an adjustable part of the winding and a groove 9 in which a second spring-loaded contact 10 is placed is freely mounted metrically coupled to flexible linkage 11c of the first spring-loaded contact and the fixed soprikasayuschiys metallic cylinder 12 connected to the AC output. 4 ill. Ј

Description

00

with about

VI

s about

Cj

Jt

FIG. 2

The transformer is designed for use in various fields of technology in a wide variety of power ranges, where smooth voltage control is required under load without breaking its circuit .....

The aim of the invention is to eliminate these drawbacks by making the core of the transformer without a gap according to the conventional manufacturing technology of such apparatuses.

The essence of the invention is that the transformer has an insulating cylinder with grooves along a helical line, a metal cylinder with an output for connecting to the network, the collector element has a second contact, electrically connected to the first one, the magnetic circuit is closed, the insulating cylinder is located on the core of the magnetic circuit , the second contact of the current collector element is in contact with the metal cylinder.

In FIG. Fig. 1 is a schematic diagram of the devices of Fig. 2; a general view of the transformer; Fig. C is a section I- along the insulating sleeve; Fig. 4 is a section II-II illustrating a drive device for controlling the voltage.

The schematic diagram of Fig. 1 shows that the process of changing the voltage under load occurs without shorting the individual turns of the adjustable part of the winding. The design of the transformer of Fig. 2, as well as 3, 4, which implements such an adjustment method, comprises a magnetic circuit. 1, on which an unregulated winding (s) 2 is placed, on top of it there is a fixed insulating cylinder 3, on the surface of which a groove 4 is made in the form of a helical line, in which coils of the adjustable part of the winding 5 are placed. A movable insulating cylinder is freely put on top of the insulating cylinder a sleeve 6 having a groove 7 in which the first spring-loaded contact 8 is placed in contact with the wire of the adjustable part of the winding, and a groove 9 in which the second spring-loaded contact 10 is placed, electrically connected by a flexible connection 11 with a first spring-loaded contact and in contact with a fixed metal cylinder 12 connected to a network terminal (see also Fig. 3). In the body of the movable insulating sleeve there are through holes 13 through which the rods 14 are fastened in the body of the driven gears 15 located in the bearings 16 covering the magnetic circuit. One of these gears is engaged with a drive gear 17 provided with a drive device, manual or electric.

The device operates as follows.

Statics. When the transformer is on, the insulating sleeve b is at rest, its spring-loaded contacts 8 and 10 are connected respectively to

adjustable part of the winding 5 and the inner surface of the fixed hollow metal Cylinder 12, creating an electrical circuit between the transformer winding and the terminal for the flow of current

5 of the load at the given voltage value: spring-loaded contact 8-flexible connection 11-contact 10-cylinder 12-pin (Fig. 3).

Job. If it is necessary to change the output voltage of the transformer, it is rotated (by hand or electric drive) the drive gear 17 (the details of its attachment to the housing are lowered), as a result of which the driven gear 15 begins to rotate, which through the links 14.

5 freely passing through the holes 13, transmits the rotation of the movable insulating sleeve 6, freely dressed on a stationary insulating cylinder 3. The rotation of the sleeve 6 causes the spring 0 to move slightly contact 8 along the length of the turns of the adjustable part of the winding 5 and the spring-loaded contact (contacts) 10 along the fixed a metal cylinder 12, which causes a smooth change in the output voltage of the transformer. In this case, the sleeve 6 itself moves along the magnetic circuit, rotating around it due to the interaction of the contact 8 with the walls of the helical groove 4.

0 Thus, voltage regulation under load is not associated with the periodic closure of adjacent turns, it occurs without breaking the circuit and can be performed very accurately. Current collection process

Claims (1)

5 with an adjustable part of the winding at a reasonable speed of rotation of the sleeve 6 is not accompanied by sparking, it is well studied and successfully used in trolley devices (ha, etc.). The kinematic scheme of rotation of sleeve 6 may be different. The transformer can be multiphase, with either a rod or armor design of the magnetic cores, in the latter case, 2 means primary and secondary windings. The number of contacts 8, 10 is limited only by design considerations. SUMMARY OF THE INVENTION A voltage-controlled transformer under load, comprising a magnetic circuit, windings, a current collector element, moving along a helical line and in contact with the winding through a contact, drive, characterized in that, in order to increase reliability and simplify assembly, it has an insulating cylinder with grooves along a helical line, a metal cylinder with a terminal for connection to the network, TO AXIS 05 12 the collector element has a second contact, electrically connected to the first one, the magnetic wire is closed, the insulating cylinder is located on the core of the magnetic circuit, the second contact of the current collector element is in contact with the metal cylinder. / G 8y6odu Regulus, part o5m. Figure 1 Figz V / -V / L5 / 7 9 ° l :;