SU1492389A1 - Method of manufacturing cylindrical winding of induction devices - Google Patents

Abstract

The invention relates to the field of electrical engineering and can be used in the manufacture of windings of transformers and reactors, mainly high-voltage cylindrical type, multilayer. The aim of the invention is to simplify technology and increase reliability by improving the electrical characteristics of the insulation. For this, the insulating elements are made in the form of gaskets of insulating tape segments by its transverse folding and mounted on the mandrel 2 in at least two rows with their overlapping in width and with a shift in length between the rows. After winding the second layer 10 of magnet wire under its last turns, install at least one row of similar gaskets according to the same scheme, etc. Then, over the last layer 12 of the winding wire, the free ends of the gaskets, bent to the cheeks 3, are folded over to form the front portions 13 of the body insulation and part 14 of the outer side body insulation with a stepped surface. 4 il.

Description

The invention relates to electrical engineering and can be used in the production of transformers and reactors obgig, mainly high-voltage, cylindrical type, multilayer, and in particular, impregnated with compounds,

The purpose of the invention is to simplify the technology and increase the reliability of the device by improving the electrical characteristics of the insulation.

Fig, 1 shows the gasket, axonometric image; in fig. 2 - installation diagram of gaskets around the perimeter of the winding; Fig, 3 - winding in the process of winding; on (1) ig. 4 - winding after its winding.

A method of manufacturing a cylindrical winding of induction devices is carried out as follows.

The gaskets 1 are prefabricated from sections of insulating tape by cross-folding it, for example, three times (Fig. 1). According to the diagram of FIG. 2, the gaskets are installed with their overlapping width relative to each other on the mandrel 2 (FIG. 3) at its ends, and the free ends of the gaskets are bent to the brush 3 of the mandrel, thus forming one of four gaskets. Gasket fixation is effected, for example, by insulating tape. Then, a series of gaskets, for example the second, and then the third, shift of the gasket of these rows relative to the gaskets of the previous row are formed in the same way, thus forming parts 5 I1 of the core; 1 side insulation with a stepped surface, and free x1H11.6 gaskets bend to the cheeks ogravki. On the mandrel and the stepped surfaces of the part 5, the insulating tape 7 is wound, which together with the parts 5 of the inner side shell: the insulation forms the inner side shell insulation. Then, the first layer of winding wire 8, the insulating tape forming the interlayer insulating layer 9 are wound, after which the second winding layer of the winding wire is made and at the end of winding this layer under the last turns one row of 4 gaskets 1 is installed according to the diagram of FIG. 2, and the free ends of the gaskets bend to the cheek mandrel. After that, interlayer insulation 9 and the next, third layer 11 winding wire are wound, at the end of which winding one row of 4 gaskets 1 is also installed under the last turns according to the scheme of FIG. 2, the free ends of which are also bent to the cheek 3 of the mandrel 2, Next t successively winding the interlayer insulation, the subsequent layers of winding wire and the installation of rows of gaskets, after which over the last layer 12 of winding wire (FIG. 4) bend the free ends of the gaskets bent to the mandrel cheeks in rows 4, In this case The end parts 13 of the body insulation and the V + parts of the outer side body insulation with a stepped surface are used.

These stepped surfaces and the last layer of o6MOT04froro wires wind the insulating tape 15, which, with parts 14, forms the outer side shell insulation.

The installation of rows of 4 gaskets 1 directly in the process of winding the winding eliminates additional technological operations and equipment,

used in a known method in which G13olates and install removable process rings on the mandrel to form the end parts of the gold and impose additional insulation on the wire of the outer turns.

The installation between the layers of the winding wire of the four gasket layers, unified with the gaskets installed on the mandrel, reduces the number of different types of technological operations and ensures the reliability of the winding by improving the electrical characteristics of the insulation by obtaining its required thickness at the end of the winding.

Claims (1)

Invention Formula A method of manufacturing a cylindrical winding of induction devices, in which insulating elements are installed on the mandrel at its ends, which form parts of the inner side cabinet insulation with a stepped surface and free-) the 1st end of which is bent to the mandrel cheeks, is subsequently wound on the mandrel and stepped surfaces insulating tape forming The inner body insulation, winding wire layers and insulating tape forming the interlayer insulation, end parts of the body insulation and parts of the outer side case insulation with a stepped surface are made from the ends of the insulation elements bent to the mandrel cheeks of the ends of the insulating elements and the last layer of winding wire insulating tape, forming an outer side case insulation, characterized in that, in order to simplify the technology and increase reliability by improving electrical characteristics of the insulation; the insulation elements are made in the form of gaskets of insulating tape segments by their transverse folding at least twice and mounted on a mandrel at least in two rows with overlapping width in each row and with a shift rows relative to each other along the length of the gaskets, and when winding the second and subsequent layers of the winding wire, the gaskets are installed at least under one of the last turns, forming at least one row of them. 1 Figg Fi.Z