SU905961A1 - Rectifying transformer device - Google Patents

Description

The invention relates to a high voltage technique and may be used as a power source for electron beam technology and in special electrophysical installations.

A low-power three-phase symmetrical transformer is known, assembled on three U-shaped ribbon cores, the sections of which are located along the vertices of an equilateral triangle 1.

The disadvantage of this design is low power, increased coil coil length, the inability to perform the main insulation for voltage in hundreds of kilovolts.

Also known is a transformer for transmitting control pulses, which contains reinforced elements. The control pulse is transmitted from the primary winding to several secondary ones under different high potentials. The primary winding consists of a loop-shaped coil, at least partially covered by a tubular insulating sleeve, a carrier, ring cores, with secondary toroidal windings connected in series through rectifying elements 2. The disadvantage of such a transformer is small enough, developed in a unit of working volume due to the asymmetry of electric and magnetic fields.

The aim of the invention is to simulate the structure and increase the specific volumetric power.

This goal is achieved by the fact that in a transformer rectifying device containing isolated

15 modules from each other, each of which contains a closed core carrying a secondary winding section, rectifying elements connected to the secondary winding sections, and

Claims (2)

The primary winding passing along the axis of the common window of the cores forming the vertical columns, the primary winding is made in the form of three flat rectangular coils, the vertical parts of which pass in pairs along the axis of the window of the core column, while the straightening elements of the modules are connected into three-phase the bridges, the horizontal parts of the primary sheaths are located along the edges of the equilateral triangle and the rectifier bridges are assembled in two parallel branches, the high-voltage output is located in the middle of the column dech nicks and extreme bridges at the column ends are grounded. Figure 1 shows a variant of the design of a transformer on toroidal cores; figure 2 - column cores, a longitudinal section; in fig. 3 — stress diagram along the main insulation; 4 is the main insulation, the cross section; Fig. 5 is a schematic diagram of a transformer rectifying device. Columns from toroidal cores 1 form a spatially symmetric structure. Magnetic flux 2 in each column; closed in the ferromagnetic material of the toroidal core. The primary winding is formed by three rectangular multiturn, the vertical parts of which 3, 4, and 5 run in pairs along the axis of the column of toroidal cores. The horizontal sections of the three frames of the primary winding 6 form an equilateral triangle. The six ends of the primary winding 7 of the upconverting transformer are connected according to a star. The toroidal cores of the magnetic system of the transformer are insulated by disks 8 and carry sections of the secondary winding 9 that are connected to the straightening element chain 10. The straightening elements form two parallel branches grounded at the ends of the core columns . The disk isolator And fixes the coaxial formed by the insulating cylinder 12 and the electrostatic screen of the primary winding 13. The taps 14 provide a forced dividing of the potential in the rectifier sections, and the output of the high potential 15 is located in the central part of the core column. The turns of the adjacent coils of the primary winding 16 and 17 are insulated with electrocardboard and film. The space between the cylinders 18 is filled with an electrically stable medium — transformer oil or SF6 gas. The transformer rectifier device operates as follows. When connecting the primary winding Kt | t 3, 4 and 5 to the three-phase network, a magnetization of a spatially symmetric magnetic system of the transformer occurs, while the magnetic flux is localized in separate cores 1. In the sections of the secondary winding 9, an emf system is induced which causes the flow of the electromotive force TOKai through a load connected to the high -voltage output 1 A spatially symmetric magnetic system of the transformer can be assembled on U-shaped or toroidal cores. In the second case, the level of mutual inductive connections of individual sections is sharply reduced, which allows for the implementation of a forced uniform voltage distribution in the rectifier bridge circuit. The possibility of forcibly dividing the potential across the transformer rectifying sections of the device allows optimal use of the cylindrical volume of the boiler installation. It facilitates the implementation of the main insulation of the converter high-voltage transformer, the structure of which is an oil or gas-insulated coaxial with a low potential at the ends of the core column and its stepped increase towards the center of the column. Claim 1. Transformer-rectifying device comprising modules isolated from each other, each of which contains a closed core carrying a secondary winding section and rectifying elements, the cores forming vertical columns, the primary winding passing along the window axis core columns, and a high-voltage output, characterized in that in order to increase the specific volumetric power, the primary winding is made in the form of three flat rectangular coils, the vertical parts of which are pairs along the axis of the column windows of cores, wherein the module rectifier elements are connected in three-phase bridges | located along the column cores. 2. A device according to claim 1, characterized in that, in order to improve the shape of the current curve, the horizontal portions of the primary coils form an equilateral triangle. 3. The device according to paragraphs. 1 and 2, that is, the rectifying bridges of the modules are assembled in two parallel branches, the high-voltage output is located in the middle of the core column, and the extreme bridges at the ends of the column are grounded. Sources of information taken into account during the examination 1. Bal N.R.H. Transformers for Adio Electronics, Soviet Radio, 1971, p. 54, fig. 2-38. No. 3662248, 2. US patent cl. 321-11, 1969.