SU1338116A1 - Pulse roentgen apparatus - Google Patents

Abstract

The invention relates to the field of X-ray technology and, more specifically, to pulsed X-ray machines used in dynamic radiation flaw detection and in the study of fast process processes in dense media. The aim of the invention is to increase the efficiency and the exposure dose per pulse of radiation. To achieve the goal, the primary winding 3 of the pulse transformer is made of a flat tire rolled up in two turns, with opposite edges of which there are cutouts 6 spaced apart from each other by the length of the turn of the primary winding 3. An isolating pad is placed between the turns of the primary winding 3 . The ends of the primary winding 3 are connected in series to the storage capacitor and the control switching discharge. 3 il. i (L: from 00 cpueZ

Description

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The invention relates to X-ray technology, and more specifically to pulsed X-ray machines used in dynamic radiation flaw detection and in the study of fast processes in dense media.

The aim of the invention is to increase the efficiency and the exposure dose for a radiation pulse.

Figure 1 schematically shows the proposed pulsed x-ray machine; 2 shows the structure of its primary turn; FIG. 3 - distribution of power lines in the area of cutouts in the primary winding busbar.

The pulsed x-ray apparatus contains a pulsed x-ray tube 1 (Fig. 1) connected to the secondary winding 2 of a pulsed high-voltage resonant transformer, the primary winding 3 of which is connected in series with the storage capacitor 4 and the switching switching head 5. The primary winding 3 is made from a flat tire rolled up in two turns, with opposite sides of which there are notches 6 (Fig. 2), separated from each other by the length of the turn of the primary winding 3 and entering into each other Oh. Thus, winding 3 is two flat coils between which a thin insulating gasket (not shown) is placed, preventing electrical contact between these coils.

Pulsed x-ray machine operates as follows.

The storage system 4 (figure 1) is charged from the power supply system (not shown). When a control signal arrives at discharger 5, a breakdown occurs and capacitance 4 is discharged to the primary winding 3. In the latter, a short-term current flows through the primary winding bus 3 from one end to the other, and at the cut-outs of 6 power lines 7 (Fig. 3) thicken. However, taking into account that in both flat turns of the primary winding 3, the current flows in the same direction, in the place of the notches

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6 (FIG. 3), the current power lines 7 from one and the other flat coil together create a magnetic field similar to the magnetic field of two flat isolated coils. As a result, a magnetic field arises inside the primary winding 3, which, as a result of mutual induction, induces an emf in the secondary winding 2. A short-term high voltage is applied to the electrodes of the x-ray tube 1 and when the breakdown of tube 1 creates a powerful impulse of x-ray radiation.

Thus, the proposed pulsed x-ray apparatus is characterized by an increase in the coupling coefficient of the windings of the high-voltage pulsed transformer due to a significant decrease in the parasitic flux losses in the primary circuit, which increases the efficiency of the apparatus by at least 1.5 times; an increase in the quality factor of the primary circuit due to the low impedance of the entire primary circuit together with an increase in the coupling coefficient of the windings with respect to magnetic flux, which makes it possible to increase the exposure dose per pulse of radiation.

Claims (1)

Invention Formula A pulsed x-ray apparatus containing a pulsed high-voltage resonant transformer, a pulsed x-ray tube connected to the secondary winding of a transformer, a storage capacitor and a controllable switching charge connected to the primary winding of a transformer, characterized in that, in order to increase efficiency and exposure dose pulse of radiation, the primary winding of the transformer is made of a flat tire rolled up in two turns with incoming in friend from opposite sides YOU cuts separated from each other by the length of the coil of the primary winding, an insulating gasket is inserted between the coils, and the ends of the primary winding are connected in series to the storage capacitor and controlled switching discharger. (puff.1 Editor Y. Sereda Compiled by K. Kononov Tehred I.Popovich Proofreader L. Beskid Order 4149/58 Circulation 801 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk Nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 FIE