DD287348A5 - ARRANGEMENT FOR COOLANT RUNNING OF ROUND SLICES - Google Patents

Abstract

The invention relates to an arrangement for the coolant passage of round disc coils of transformers or chokes with a lying core by forced circulation and with winding offsets between the disc coils. The object of the invention is to reduce the expense of forming Kühlmittel channels and to achieve gleichmaeszige Waermeabfuehung in reducing the volume of the active part of the transformer or the throttle. According to the invention, prefabricated, simple abutment elements (1) of approximately halved radial length are offset by half a strip pitch over the entire circumference, with recesses (3, 4) at the ends for attachment to strips at the inner or outer diameter (7, 8 ) and on holders in the middle diameter range, between the disc coils (5) introduced. Fig. 1 {transformer; Throttle; Cooling; oil cooling; supporting; Kuehlmittelkanal; Kuehlmitteldurchlauf; lying core; round disc coil; Wicklungsabstuetzung; Forced circulation}

Description

Ensures heat dissipation, with a reduction in the volume of the entire active part of the transformer or the throttle is to be achieved.

According to the invention, the object is achieved dall arranged to realize the cooling channels supporting elements of approximately divided, halved radial length with recesses at the ends. This Abstützelemennte be alternately on the inner and outer diameter, evenly distributed on the circumference, introduced.

At approximately the height of the central diameter, the inner and outer support elements overlap one another at least by a radial winding wire height and are fastened here by means of holding parts. For mounting ledges along the axial winding length are mounted on the outer and inner diameter, which lie in the corresponding recesses of the support elements. In an advantageous manner, the support element and the holding part can be manufactured identically from an insulating strip. The Abstützelemf'iii is extended in this case by a tongue which is bent at right angles during the winding process. The tongue is wrapped between corresponding turns in the middle diameter range.

In a simple way, the recesses and according to the strips are rectangular. However, it is advantageous if the strips are dovetail-shaped at the inner diameter and correspondingly (for the coolant inclusion of the support to be cooled.) For the coolant inclusion of the winding to be cooled, a one-part or multi-part barrier shell with lower openings is provided over the outer strips for the coolant inlet and upper openings for the coolant outlet attached.

embodiment With reference to an embodiment, the invention will be explained in more detail. Fig. 1: shows the plan view of a disc within the winding and the paths of the controlled forced circulation of the

Coolant Fig. 2: shows a support element, which is designed equal to the holding part.

The required axial support elements 1 are approximately divided in their radial length and offset from each other by half the width division over the entire circumference. In approximately half the radial width are circumferentially, twice the number of axial support elements 1, wrapped between the turns of the disc coil 5 receiving holding parts 2, which protrude into the respective located between the individual disc coils 5 radial coolant channel and in which resulting change each the inner or outer support elements 1 are kept in the necessary, predetermined position. Each support element 1 of the inner circular ring plane has, on the side facing the inner diameter, a dovetail-shaped recess 3 for attachment to the dovetailed bar aT> inner diameter 8 and on the radially outer side a longitudinal rectangular recess 4 cf taking into account the tilting tolerance and the radial winding dimension , Fia serve to receive the wrapped between the windings and projecting into the radial coolant channel holding parts. 2

The supporting elements 1 of the outer circular ring plane have on the inner circumference lying side dovetailed recesses 3 for receiving the projecting into the radial coolant channel holding parts 2 and the outer diameter rectangular recesses 4 for receiving the circumferentially over the entire axial winding length extending strips on the outer diameter 7. Over the entire axial length of the device to be cooled one or more part barrier shells 9 are arranged with lower openings for the coolant inlet 10 and upper openings for the coolant outlet 11.

In an advantageous embodiment, the support element 1 and the holding part 2 can be manufactured as one element. In this case, the support element 1 is extended by a tongue 6, which is then wrapped during the winding process between two turns in the middle diameter range.

Claims (3)

1. arrangement for the coolant passage of round disc coils of transformers or chokes with lying core by forced circulation, wherein between the discs of the coils radially extending, in uniform circumferential pitch, shape and thickness insulating material strips are introduced for a winding support and to form ways for the coolant flow, characterized in that evenly distributed on the circumference, alternately on the inner and outer diameter of the disc coil (5) supporting elements (1) of approximately divided, halved radial length with recesses (3), (4) are arranged at the ends, wherein the inner and outer support elements (1) overlap at approximately the height of the central diameter by at least one radial winding wire height and here by means of holding parts (2) are fixed, that strips on the outer diameter (7) and strips on the inner diameter (8) are mounted along the axial winding length which correspond in the nden recesses (3), (4) of the outer or inner support elements (1) lie, and that over the strips on the outer diameter (7) has a one- or multi-part barrier shell (9) with lower openings (10) for the coolant inlet and upper openings (11) is mounted for the coolant outlet. 2. Arrangement according to claim 1, characterized in that the support elements (1) in the middle diameter by wrapped between the turns, bent at right angles tongues (6) of the support elements (DaIs stop are attached. 3. Arrangement according to claim 1, characterized in that the recesses (3) of the supporting elements (1) and the strips on the inner diameter (8) are dovetail-shaped. For this 2 pages drawings Field of application of the invention The invention relates to an arrangement for the coolant passage of round disc coils of transformers or chokes with a lying core by forced circulation and with Wicklungsabstützunpen between the disc coils. Characteristic of the known state of the art It is known to use mesh bars of various designs for the coolant circulation between the Scheibenontwicklungen. These grids allow a multi-part coolant pass. According to DD-WP 35843 it is known that the grid structure is made of strips and these are made of a number superimposed, provided with a curable material, made of insulating strip and that these parallel strips are connected by this vertical, but weaker insulating strips , so that channels for the flow of the coolant arise. The main disadvantage of these strips mesh is in addition to the very complex production at exceptionally high waste rate of the fact that they do not allow due to the arrangement of their parts use for round disc coils. In addition, a laminar insulating material is known for the formation of cooling channels according to DE-OS 2812466. In the longitudinal direction at spaced intervals and in the transverse direction to the flow at a mutual distance and offset from each other raised portions of different dimensions are applied so as to achieve a controlled cooling effect. Dieso arrangement has the disadvantage that it covers the disk coils on one side over a large area and does not or not sufficiently cooled by the applied portions of a disk coil side. With double-sided use of the insulating material would be a doubling of the coolant channel with simultaneous increase in the total winding and thus all dimensional parameters of the transformer or the throttle the result. Object of the invention The aim of the invention is to find an effective Zwangskühiung that gestaiiei, the Aküviei! and thus to manufacture the entire transformer or the throttle cheaper. Explanation of the essence of the invention The object of the invention is to provide an arrangement for the coolant flow of round disc coils of transformers or chokes with a lying core that allows using prefabricated parts between the Schoibonspulen the most uniform coolant circulation on both sides of the Scheihenspulon and so a comprehensive