SU599738A1 - X-ray generator - Google Patents

Abstract

The X-RAY GENERATOR, comprising a housing in which an X-ray tube and a voltage multiplier are located, is implemented > & 1Y according to Cockroft-Walton's scheme, which also rant in order to increase the efficiency while reducing the size and weight of the generator, the voltage multiplier is made of compound-packed unwrapped spiral-wound paper capacitors arranged coaxially with the x-ray tube and isolated from the case by a dielectric dielectric with low dielectric constant например for example, the combination of a non-polar dielectric film with paper pads, an X-ray tube on the high-voltage side (^) is separated from the housing by a screen, between the latter are • dielectric layers with high dielectric * permeability, for example, from a combination of a polar dielectric film and condenser paper, and in the intervals between the dielectric layers with high dielectric constant are located • edges of dielectric layers with low dielectric constant, so that the surface These contact points form a labyrinth surface. < L

Description

The invention relates to X-ray technology, in particular to X-ray generators.

A X-ray generator containing a three-electrode X-ray tube and a voltage multiplier made according to the Cockr – Walton scheme are known ...

Also known is an X-ray generator, a case containing a X-ray tube and a voltage multiplier, made according to the Cockroft-Walton scheme

The disadvantages of the known devices are relatively large dimensions and weight, as well as the insufficiently high CCT.

The purpose of the invention is to increase the efficiency while reducing the size and weight of the generator.

The goal is achieved by the fact that the voltage multiplier is filled from hompauzzom-impregnated unpackaged spiral-wound paper capacitors arranged coaxially with an X-ray tube, and isolated from the case by a dielectric dielectric with a low dielectric constant, for example, from a combination of a non-direct dielectric film with a small dielectric constant, using a combination of a non-conducting dielectric film and a small dielectric constant with a combination of non-direct dielectric, using a combination of a non-conductive dielectric film and a small dielectric constant with a combination of non-conducting dielectric film and a small dielectric constant with a combination of a non-conducting dielectric film and a small dielectric constant. on the side of the high-voltage electrode, the screen is separated from the corus, between the latter there are dielectric layers with high dielectric constant, for example, from a combination of a polar dielectric film and capacitor paper, with the edges of the dielectric layers with i having a small dielectric constant in the spaces between the layers of the dielectric with a high dielectric constant so that their contact surfaces form a labyrinth surface.

In addition, each co-capacitor link of the multiplier and equalizer of the multiplier voltage is made in the form of at least two capacitors, and these columns are diametrically opposed to each other.

The invention is illustrated in the drawing.

The generator is assembled in a metal case 1, Coaxially with a X-ray three-electrode tube 2, voltage multiplier 3 is located; compaved house 4,

The voltage multiplier 3, carried out according to the Krcroff a-Wal tone scheme, contains cascades that are arranged one after the other along the tube with a uniform, 1cm increase in potential along the direction to the anode. The voltage multiplier contains step-up 5 and leveling 6 columns of capacitors made1) in the form of impregnated unpacked flat wound spiral-wound paper capacitors impregnated with compound. A voltage shield is fixed on the voltage multiplier 7, which is connected to the anode of the tube. A layer of insulation 8 is wound on the outer surface of the multiplier. It is made of a combination of non-polar film and capacitor paper, the edges of the layers of which form a labyrinth with layers of dielectric 9 of polarity and capacitor paper located in the gap between the screen 7 and the housing 1,

In addition, each capacitor link of the upstream 5 and leveling columns b is made of at least two capacitors to improve their placement around the tube, with columns 5 and 6 diametrically opposed to each other.

The generator is filled with a liquid dielectric and covered with a lid 10 with a rubber gasket 11 to ensure tightness. The control voltage on the grid of the tube, as well as the voltage on the input, multiply the output voltage and on the filament electrode of the tube is fed through the hermetic leads 12,13 and 14 from the power supply and control unit, which is not shown in the figures. This unit can be attached to the generator or directly embedded in it.

Claims (1)

X-ray generator, comprising a housing in which an X-ray tube and a voltage multiplier are arranged, made according to the Cockcroft-Walton scheme, characterized in that, in order to increase the efficiency while reducing the size and weight of the generator, the voltage multiplier is made of impregnated spiral wound paper impregnated with a compound, capacitors located coaxially with the x-ray tube and isolated from the housing by a dielectric layer with a low dielectric constant, for example, from a combination of non-field hydrochloric dielectric film with paper strips, by the X-ray tube high voltage electrode is separated from the screen housing into the interval between the last ^located; layers of dielectric with high dielectric constant *, for example, from • a combination of a polar dielectric film and capacitor paper, moreover, in the gaps between the layers of dielectric with high dielectric constant are located the edges of the layers of dielectric with low dielectric constant, so that their contact surfaces form a labyrinth surface. ns