SU716073A1 - High-voltage pulse transformer - Google Patents

Description

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The invention relates to electrical engineering, namely the design of high-voltage pulse transformers, and can be used for high-voltage power supply of various electrical and electrophysical devices.

A pulsed transformer is known for producing high voltage pulsed voltages, in which separate toroidal cores 1 are used as magnetic cores. Each of the individual toroidal cores is provided with a single-turn winding. The single-turn windings are connected in parallel and form the primary winding of the transformer, and a metal pipe is used as the secondary winding.

The design of the famous transformer is technological and has considerable dimensions and weight. In addition, placement on separate toroidal cores on one volumetric turn limits the transformation ratio and puts it in direct dependence on the number of cores. The closest to the invention to the technical essence is a transformer, designed to transmit control pulses to thyristor blocks, which are at a high potential {2. The known transformer has an insulating body filled with dielectric. The magnetic conduit consists of separate toroidal cores, on each

of which is located the toroidal section of the secondary winding. Sections of the secondary winding are connected in series. The sections with the cores are located coaxially above each other in the form of a cylinder and are separated by insulating rings. Inside the transformer housing are placed two columns, which are assembled from sections with cores. The coils of the primary winding are placed inside the insulating U-shaped

pipes. The pipe passes through the windows of two columns. The secondary section has independent pins outside the enclosure.

Placing the turns of the primary winding inside the U-shaped tube does not allow equidistance of the turns of the primary winding relative to the turns of the secondary winding, which leads to an uneven electrical zero between the windings, which, in turn, contributes to the breakdown of the insulation. In the known transformer it is impossible to carry out the implementation of the primary winding of the toroidal shape, which does not allow to reduce the distortion of the pulse shape.

The purpose of the present invention is

reduction in size and weight by obtaining high dielectric strength gradients.

This goal is achieved by the fact that in a known transformer comprising a housing filled with a dielectric, inside which there is a magnetic core of individual toroidal cores, each of which has a secondary winding section, the core sections are located one above the other in the form of a cylinder and are separated by insulating rings, and the primary winding, sections of the secondary winding are connected in series, the casing is insulating toroidal, in the window of which the primary winding passes. The primary winding can also be made toroidal and multiturn.

General view of the high-voltage pulse transformer is shown in the section in the drawing.

The high-voltage transformer contains magnetic cores from separate toroidal cores 1, each of which has a toroidal section 2. Sections 2 with cores 1 are located coaxially one above the other in the form of a cylinder, connected in series and form a secondary winding. Toroidal cores 1 together with sections 2 are placed on insulating rings 3. Rings 3 are attached to insulating pipe 4. Pipe 4 together with cores 1 and sections 2 are placed inside insulating casing 5, which encloses the magnetic circuit with secondary winding. Case 5 has a toroidal shape and is made detachable. A demagnetization winding 6 passes through the window of the housing 5 and the primary winding 7 with terminals 8 and 9. The primary winding 7 is toroidal and placed on the outer surface of the housing 5. The high-voltage terminal 10 of the secondary winding is made in the upper part of the housing 5. In the lower part of the housing 5 made the output 11 of the Tuesday winding.

High-voltage pulse transformer is effective in the range of output voltages 500 h-1000 kV, duration

 And the pulse repetition rate up to 1000 Hz.

Performing the secondary winding in the form of a cascade of serially connected sections and placing it inside the insulating toroidal body allows to reduce the average length of the magnetic lines and the second winding perimeter, which in turn makes it possible to reduce distortion of the pulse shape. In addition, the primary winding is made toroidal, which also leads to the achievement of this goal. The cascading arrangement of the secondary winding sections allows the section coils to be isolated from a separate toroidal core by the magnitude of the voltage of just one section. This makes it possible to use the windows of the toroidal cores to fill them with coils of the secondary winding. The implementation of the toroidal body is hermetic and filling it with a dielectric makes it possible to obtain high gradients of interwinding dielectric strength

insulation, which reduces the size and weight.

Claims (2)

1. A high-voltage pulse transformer containing a dielectric-enclosed casing, inside of which the secondary winding is located, is made in the form of separate series-connected toroidal sections, each of which is placed on a separate core of the magnetic conductor, the primary winding, which is characterized by the fact that, in order to reduce overall dimensions and weight by obtaining high electric strength gradients, the housing is insulated, in the form of toroid, in the window of which the primary winding passes. 2. Transformer according to claim 1, characterized in that the primary winding is made toroidal, multi-turn. Information sources, taken into consideration 1. USSR Author's Certificate No. 233035, cl. H 01F 19/08, 1967. 2. The patent of England No. 782299, cl. 38 (2), 1956. ten eleven