DE1979215U - HIGH VOLTAGE ELECTRIC TRANSFORMER. - Google Patents

Description

High voltage electrical transformer

The invention relates to an electrical high-voltage transformer, its a yficklung for tensions over

■ γ

10 KV and is specially designed for steel treatment should be used.

In many areas of industry and in other areas, electrical transformers with iron cores are in Use, in the manufacture of which their behavior in terms of power, current strength, efficiency and frequency was decisive. However, not only these factors have to be taken into account, but must also be taken into account during manufacture appropriate intended use can also be taken into account in other ways. This is determined by the available space the dimensions of the transformer, and which ones to use Insulating materials must, among other things, correspond to the permissible Operating temperatures can be selected.

In the case of a transformer that is used to feed a moving Radiation device is to be used, the small dimensions must not interfere with the other properties impact. For this, the insulation of the secondary winding and the application of the winding to the core in special way to be made so that the transformer

Λ - 2 -

can be subjected to the high thermal and mechanical requirements that shorten the service life without risk "contribute.

The object of the invention is to provide a high-voltage transformer for radiation devices that by structural features can meet the above-mentioned requirements by improving its dielectric behavior will.

In the present high-voltage transformer, the winding body on the secondary side is of a thermosetting type Material surrounds and contains an insulated electrical conductor, which is in several layers separated by insulating foils is wound around a magnetic core, according to the invention the wrapping lies between two coaxial, metallic and insulated shields and on both edges is widened by an open, metallic ring.

According to a particular feature of the invention, one of the conductive rings is with the inner shield and the others connected to the input of the winding. Said rings form elements for mutual electrical connections.

It is also important to include both the inner metallic shield and the insulation around it to provide through holes to allow the inflow of an insulating gas for impregnation.

The thermosetting covering of the secondary winding forms a solid block, on the outside of which there are two more Metal rings are attached, which are with the first turn of the winding on adjacent potential. These rings are

that of elastic supports attached to the support of the core are attached, pressed against the Y / andung of the block.

Further features of the invention are explained below using an exemplary embodiment which is shown in FIGS accompanying drawings. It shows:

Mg. 1 schematically shows a front view of the transformer according to the invention,

Fig. 2 schematically shows a side view of the arrangement according to Mg. 1,

Mg. 3 partially an enlarged longitudinal section in the axial plane IH-III of Mg. 2 with a schematic representation of the secondary winding.

In this embodiment the transformer has a primary winding (not shown) and a secondary winding body 14 in the form of a cylinder with conical ends, which is applied to a core 16 made of magnetic sheets held together in the chuck 17. The secondary High-voltage winding consists of a conductor wire, the individual turns 6 of which form several layers. The first turn lies on a metal ring 5 'which is not electrically self-contained and which is connected via a flexible line 9 'to a further, external metal ring 8'.

The winding is on a hollow cylinder 1 made of insulating material applied by a tubular shield 3 made of metal foil and an overlying second tube 1 ', also made of insulating material. The metallic shield 3, which is located on the inside of the winding, is connected to the side with a metal ring 5, which is not electrically self-contained and from which a flexible line 9 leads to an external metal ring 8.

The outer rings 8 and 8 'prevent the occurrence of corona discharges, which adversely affect the properties of the transformer and the service life of the insulating jacket the secondary winding can reduce. The hollow cylinder 1, the shield 3 and the pipe 1 'are superimposed holes 2, 4 and 2 'provided to allow the inflow of an insulating gas for impregnation. The lines 9 and 9 'are passed through openings in the wall of the hollow cylinder. The positions of the individual turns β are separated from one another by foils made of porous insulating material, for example paper, and are arranged in such a way that there is for the entire winding the shape of a cylinder results in tapered at both ends like a truncated cone. On their outside the winding is enclosed by a metallic shield 10, on the one hand with the last turn and on the other hand via an elastic intermediate piece 13 with two Output electrodes 11 is connected. The electrodes 11 are provided with a blind hole 12 which contains an internal thread. The entire winding body is made of a plastic thermosetting material Enclosed insulating material, the outer surface of which is advantageously ground matt.

Yfenn the winding body 14 is applied to the core is, elastic supports press from the side on the outer metal rings 8 and 8 '. These supports are made of sleeves 15 and 15 'formed from flexible insulating material, the are attached to the chuck 17 with fastening screws. The outer metal rings 8, 8 'have short connecting wires 18, 18 'to make measurements or a ground connection can.

Claims (8)

RA. 67 «t 112 * 11/27/67 Protection claims 1 * high-voltage transformer, the secondary winding body of which is encased in a thermosetting insulating jacket and the secondary winding of which consists of an insulated electrical conductor, which is separated in several by insulating foils Layers is wound around a magnetic core, characterized in that the winding (6) between two coaxial, metallic and isolated shields (3> 10) and on both edges by an open metallic Sing (5, 5 ') is widened " 2. Transformer according to claim 1, characterized in that both rings (5, 5 ^! ) Form elements for electrical connections, one of the two conductive rings (5) with the inner shield (3) and the other (5 ^r ) with the Input of the winding is connected » 3. Transformer according to claims 1 and 2, characterized in that that the inner metallic shield (3) and the surrounding insulation (1, 1 ') with one above the other holes (2, 4, 2 ') is provided through which an insulating Gas can flow in for impregnation. 4. Transformer according to claims 1 to 3> characterized in that the block (14) formed by the thermosetting insulating jacket and enclosing the winding ^{is framed by two further metal rings (8, 8!} ) Which are adjacent to the first turn of the winding Potential. 5. Transformer according to claim 4> characterized in that the metal rings (8, 8 ') of elastic supports (15, 15')? which are attached to the holder of the core (16) are pressed against the outer surface of the block (14). 6. Transformer after. Claim 5, characterized in that the elastic supports (15-15 ') consist of elastic, non-conductive sleeves which are fastened to the chuck (17) of the magnetic core (16) and are held by screws and attached to the metal rings (8, 8') ) must be pressed. 7. Transformer according to claims 1 to 6, characterized in that that the secondary high-voltage winding body over flexible lines (9, 9 ') on the outer metal rings (8, 8') is connected, which form electrical connecting parts of the transformer. 8. Transformer according to claims 1 to 7, characterized in that that the envelope of the secondary winding body (H) consists of a molded piece with a matt-finished surface.