SU1396165A1 - Transformer - Google Patents

Abstract

The invention relates to the field of electrical engineering and can be used primarily in transformers. The purpose of the invention is to reduce losses. The transformer contains magnetic core 1, made of several fer-rolled; magnetic sheets forming the layers of the magnetic circuit 1. At the opposite ends of the rolls of the magnetic circuit 1 in its central plane there are cut sections dividing the rolls at each end into two parts 3, 4, which are bent in opposite directions and connected in such a way that the bent parts 3 of the upper and the lower ends are connected to the junction between me, forming an armor magnetic circuit. A winding 6 is placed on the middle core of the magnetic circuit. In the proposed device, the primary winding is the rod itself, wound from a ferromagnetic material, as a result of which copper is saved. 2 з.п, ф-л, 16 Il. with S (L S /, 8 Сл9: 0 GR Od el

Description

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The invention relates to electrical engineering and can be used primarily in transformers. The purpose of the invention is to reduce losses.

FIG. 1 shows an armored magnetic core; in fig. 2 - elliptical rod shape with a hole inside; in fig. 3 - round rod shape with a hole inside; in fig. 4 - | square shape; in fig. 5 - rectangular shape; Fig 6 is a triangular shape; Fig. 7 shows a sheet for the manufacture of a magnetic circuit | in fig. 8- preparation of the magnetic circuit; in Fig, 9-- the same, with longitudinal cuts and triangular notches; in fig. 10 - blank, plan; FIG. 11 shows a longitudinal and transverse section; in fig. 12 - square blank erased s: n, plan; in fig. 13 square I workpiece after bending the cut |: parts at an angle in FIG. 14 - I node of the junction of the cut parts; I in FIG. 15 - three-phase transformer; Fig, 16 inputs of the primary I winding.

; The device contains a magnetic circuit I 1, made of several ferromagnetic sheets rolled up into a roll I, I forming layers of the magnetic circuit 1: The turns of the magnetic cores are wound from each other. At the opposite ends of the rolls of the magnetic circuit 1, in its central plane there are cuts 2, dividing the rolls at each end into two parts 3 and 4, I which are bent into opposite sides and butt-joined so that: the bent parts 3 of the upper and lower ends are connected in junction 5 among themselves and the bent parts 4 are connected in junction 5, between themselves forming an armored magnetic circuit. On the middle core of the magnetic circuit there is a winding 6. In the proposed device, the primary winding is the primary winding. of the ferromagnetic material. The connection is cut: (x parts of the magnetic circuit are made using bolts with insulating sleeves. The magnetic core is shrunk using glass banding with epoxy resin-impregnated tape. The rod can be made elliptical, round, square, rectangular, triangular shape. Mag0

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The nitrovap is made of sheet steel electrical steel with a thickness of 0.2-0.6 mm. At the time of winding the billet 7 (Fig, 8), it is made with a continuous cuts 2 at both ends. The number of cuts at each end is at least two. In addition to the longitudinal cuts, there are also triangular cuts 8 or transverse cuts 9, which facilitate the bending of the notched portions. In order to improve the cooling, in the center of the rod there is a cooling channel 10 for circulating a cooling liquid. In the case of a multi-phase transformer, a square billet is made with a central cooling channel, on which four notches 11 are made, the notched parts are bent at an angle of 90 ° with respect to each other.

Bend-over parts are joined with butt or overlap

In order to obtain a three-phase system, the magnetic system is equipped with an additional magnetic core 12, which encloses the magnetic circuit of the said structure. In this case, the windings are placed on the extreme rods x. The wired rod, which acts as the primary winding, has pins 13 and 14, drawn respectively from the inner and outer ends of the sheets. The proposed device provides a reduction in losses in the transformer.

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Claims (3)

Invention Formula 1o A transformer containing windings, one of which is placed on a magnetic conduit made of several layers in the form of ferromagnetic sheets, rolled into coils with insulation between coils and rolls bent in several places with the formation of a joint, the ends of which are fastened together device, electrical leads, made at the outer and inner layers of the magnetic circuit, characterized in that, in order to reduce losses, cuts are made at opposite ends of the magnetic cores in its central plane, L conductive coils at each end a portion which are bent in opposite directions and are connected back to back with corresponding portions of the other end rolls ob31396165 closed magnetic wire oh he ma no us in 2o The transformer according to claim 1, wherein the middle core of the magnetic circuit is filled with an aperture for cooling. 2 ten V with. fig 2 12 , b-q fig.VfieZ cpu & fO fQ X / X- t / l 3. Transformer on PP. 1 and 2, characterized in that it is provided with an additional twisted magnetic conductor encompassing the main magnetic conductor, the windings are placed on the extreme rods of the magnetic conductor ten fie.j fieL gjt / e, 6 7 FIG. eleven ; / FIG. 12 / fi8.13 ; Jk F. /four /five f4 gjuff./ff