SU1023416A1 - Method and apparatus for manufacturing cylindrical winding of transformer - Google Patents

Abstract

1. The method of pre-fabrication of the transformer winding in the transformer, in the sequential winding of the layers of the winding wire and insulating penta on the tipper armature with two shells And the formation of a shell insulation with outer and inner side and end portions of $ 1 and interlayer insulation, characterized by In order to increase the reliability of the winding by uniformly distributing the layers of the serpentine tape, the insulating tape is wound onto two .r yes technological rings so that after winding the penta on the first Each row is attached to it, each of the following rings of the row is being wrapped around the joint each time (rings, then both rows of wrapped rings are put on the mandrel, pressing each of them with the first rings to the corresponding hem of the frame, after which the layers of the tape of each p Yes, alternately, alternately, along the circumference of each ring, starting from the last and after each cut, the resulting free conch belts are bent, one to the front surfaces of the cheeks, the other to the surface of the mandrel, attached to them, forming a part on the mandrel side case insulation with a stepwise surface and end case insulation, and releasing rings are removed from the mandrel, the insulating tape is wound onto the mandrel and stepped surfaces to obtain an equal number of tape layers, forming an internal side case insulation, and wound coils of the winding wire and interlayer insulation, the ends of the penta, bent to the end surfaces of the cheeks, are placed on the wound wire and form, in this case, parts of the outer side cabinet insulation with a stepped surface, after which insulating tape is wound on the wound and stepped drive surface to sing radiation penta equal number of layers, the outer zu mod n bokovuyukorpusnuyu izo00 tsvyu. 4 2. A device for the manufacture of a cylindrical winding of a transformer, including a mandrel with two cheeks located at its ends, differs from the fact that, in order to increase the reliability of the trays by uniformly distributing the layers of insulating tape, it is equipped with two technological processes rings, each of which is made of ring sectors, fastened together by means of detachable connections.

Description

The invention relates to epektrotehkhnas, and more specifically, to transformer construction, and can be applied in the manufacture of transformer and reactor windings, npeHMymeca-BeHHO, zipindric, multilayer, high-voltage, impregnated with a thermosetting compound. The closest to the proposed technical solution and the achieved results is a method of manufacturing cylindrical windings of transformers, which sequentially winds onto the mandrel layers of the winding wire and insulating foam, forming a shell and inter-cavity imitations of the windings impregnated with a binder, and the insulating tape takes a width exceeding S.1the layers of magnet wire in the axial direction more than 2 times. When winding, the protruding edges of the insulating foam, forming the cabinet insulation, are cut around the circumference so that the cut lines in the cage and odd rows are staggered in a staggered order, and they are folded upward over the last layer of the winding wire with overlap. At the same time, in the finished coil, the largest number of layers of the tape is located at the places where there are cross layers on the outer lateral surface l. The disadvantages of this method include the relatively low reliability and the increased dimensions of the winding produced on it due to the irregular number distribution of the tape layers in the body insulation. In addition, the manufacture of the winding in this method is technologically difficult to perform due to the complexity of cutting and wrapping the lengths of the ends of the tapes forming the body isopedone in the end portions of the winding and on its outer side surface. The closest to the proposed technical essence and the achieved result is a device used in the manufacture of cylindrical windings and containing a 1-square mandrel and two brushes located at its ends. Such a device can be performed by winding layers of winding wire and insulating penta forming the interlayer insulation and body insulation by winding the mandrel, positioning its words along the surface of the winding with a binder f 2. However, this device does not allow obmopsu with the location of the singers in the end of the winding parallel to the surface of the winding. In the manufacture of case insulation by winding pentas having a width less than the height of the winding, on this device the tape is placed parallel to the surface of the mandrel. In this case, the tapes in the end part of the winding are located along the power lines of the electric field, which increases the probability of insulating in this part and impairs reliability of the coil. To ensure the required reliability in this case, a significant increase in the insulation thickness in the end part with an increase in the number of tape used to isolate these parts and the dimensions of the winding is required. The purpose of the invention is to increase the reliability of the cylindrical winding by distributing & numbered distribution of layers of insulating tape. The goal is achieved by agreeing on the method of manufacturing the transformer winding {Lucator} winding, sequential winding the layers of the winding wire and insulating tape on the cylindrical mandrel with two cheeks and forming the body insulation with the outer and inner side and tori parts of the interlayer insulation. the insulating tape is wound on two rows of technological rings in such a way that after winding the tape on the first ring of the row, each of the following rings of the row is applied to it and each time Put the ribbon on the aligned rings, then put both rows of wrapped rings on the mandrel, pressing each of them with the first rings to the corresponding cheek of the mandrel, then cutting the tape of each row into pieces along the circumference of each peg, starting from the last and after each cut. The resulting free KOHia i pent bend, some - to the front surfaces of the cheeks, others - to the surface of the mandrel, attached them to them, forming on the JjaBKe one part of the inner side insulation with a stepped surface and the freeing rings are removed from the mandrel, the insulating tape is wound onto the mandrel and stepped surfaces up to the equal number of tape layers, forming the inner side casing and insulating, and winding the layers of the winding wire and interlayer isopio penta, bent to the front The surfaces of the cheeks are superimposed by a wound wire; in this case, parts of a variuously encased side cabinet are formed with a stepwise surface, after which the isopropic penta is wound on the wound wire and a stepwise surface is by swelling of an equal number ypoev pentyl, obraau outer side cabinet vzop tion .f. Device up izgotovpensh. The drone filament winding dowel, which inserts a mandrel with two cheeks, attached to its cakes, is equipped with two rows of cocks, each having an equal average diameter, each of which is extracted from lance sectors, fastened together by means of detachable joints of the SRI. FIG. Figure 1 shows the process of winding the isogadionic penta on the first technological ring, and amp; the sleep image; on fwg. 2 - the process of winding the tape on two technological rings, folded together, axonometric image; Wah FIG. 3 - a radial section of three rings folded in the wood, in the process of winding insulating tape on them; on fwg. 4 and 5 - technological placement; rings on the mandrel and the order of formation of a step connection of the side and end of the winding of the winding on the surface of the mandrel of the device; in FIG. the process of moving m to) each of the upper-winding windings of the parts of the cut pent, which are outside the radial size of the outer layers of the winding wire; on fgs. 7 shows a device for manufacturing a transformer tiller telescope, incision. The device (Fig. 7) for the manufacture of a cylindrical hunt for a transformer according to the inventive method comprises a cylindrical mandrel 6, two cheeks 7 located on the lateral surface at its ends and two rows of technological wheels. Each of the 8th rows includes three rings 1.4 and 5, having an equal average diameter. These three technological rings are located on the side surface of the mandrel 6 at cheek 7 so that the first ring 1, which is one of the outermost, is not adjacent to the cheek 7, and the second ring 4 is between the first 1 and third 5 lances. In such a field, technological rings 1,4 and 5 are located on the mandrel 6 and during the manufacture of the winding. Each ring is made of two ring sectors fastened together by means of two screw detachable joints located diametralo. Screws 2 are made with kotiit icic countersunk head. Heads 2 of one row are directed towards the screws of screws 2 of the other row. Technological rings 1, 4 and 4 can be installed on the mandrel 6 or bond with it when one or both of the shafts 7 are removed. They can be removed from the mandrel 6 after further detaching the screw connections of the ring sectors first from the third bore 5, then from the second ring 4 and the shaver of the first ring 1. The winding is made as follows. The first technological ring 1 (Fig. 1), consisting of two unicules fastened with screws 2, winds seven layers of insulating penta 3 along the perimeter of its radial section. After applying the tape 3 to the first ring 1, it folds up to the second gauge 4, so that the second ring 4 is on the side of the heads of the screws 2 of the ring 1 with the same direction of the heads 2 on both rings 1 and 4, which are then covered together with seven layers. tapes 3. After applying the tape 3 on the joint peg 1 and 4 to them, ring 5 is formed and a full row of rings are obtained, which together cover the overlap of seven layers of tape 3. Both rows of rings 1,4 and 5, covered with tape 3, put it on the mandrel 6, placing them with the first rings 1 in the direction of the cheeks 7, first removing one of the two cheeks 7 from it and then installing it again on the mandrel 6. Both p and the rings of the mandrel are installed, pressing them with t-rings 1 to the cheeks 7, then alternately, around the circumference of each ring 1,4 and 5, the layers of the tapes 3 are cut. The cutting starts from the last ring 5. After each section, the tapes 3, located along the outer and inner surfaces of the rings, are moved by bending, respectively, to the surface of the cheek 7 and the lateral surface of support 6, attached to them. Releasing rings 5,4 and 1 are removed from the mandrel at each ring sector. First, the third rings 5 are removed, then the second 4, and then the first 1, with the atom on the mandrel, form the stepped surface of the 8-part part 9 near the cabinet insulation, then the netpf 3 of the mandrel 6 is wound up to obtain a uniform thickness of the mandrel 6, t . The same pvnt layers are the same as in the end part 9 of the housing insulation, about a stepwise joint with a band of tapes on it. After removing the coped 1, the coils of the winding wire 1O and the inter-seam insulation 11 are wound on the mandrel 6 in a known manner. Then, the outer part 12 of the cabinet insulation is wound onto the outer surface of the winding wire layers, giving it two foam edges, which are connected to the ends of the penta 3, which are moved from the surfaces of the cheeks to the outer side surface of the winding. At the same time they form a stepped surface 8 in a body insulation. On the outer surface of the layers of the winding wire 1, the same number of layers are wound and the same number of layers of rail 3 is wound, as many layers are contained in the end portion of the body insulation. This ensures the uniformity of the secret of the body from 166 gddia along its surface. on the winding, they are fixed on the surface of the winding using the same tape, winding it over these cables. After winding is complete, the winding is impregnated. After winding the turns of the conductors 10 and the interlayer insulation 11 onto the outer side surface, you can first move the ends of the tapes 3, and then wind the layers of the body insulation onto this surface, forming a stepped surface 8. The number of layers of insulated diorata is 21 and the same in all parts x 12 and 9 case insulation This ensures that the insulation thickness is performed with greater uniformity, and therefore the reliability of Koi insulation is increased. In this case, the case insulation of the winding can be made of a mica ribbon with a glass fiber substrate impregnated with a thermosetting epoxy resin binder.

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Claims (2)

METHOD FOR PRODUCING A CYLINDER WINDING OF A TRANSFORMER AND A DEVICE FOR ITS IMPLEMENTATION (57) 1. A method of manufacturing a cylindrical winding of a transformer, including sequential winding of layers of a winding wire and insulation tape on a cylindrical mandrel with two cheeks and the formation of shell insulation with the outer parts of the inner and side and insulation, characterized in that, in order to increase the reliability of the winding by evenly distributing layers of insulation tape, the insulation tape winding they are wound onto two rows of technological rings in such a way that after winding the tape on the first ring of the row to it, put each of the next rings of the row and each time wrap the tape on the combined rings, then both rows of wound tracks are put on the certificate, pressing each of them with the first rings to the corresponding cheek of the mandrel, after which the layers of the tape of each row are cut alternately, along the circumference of each ring, starting from the last ^ and after each cut, the free bands of ribbons formed are folded, one to the end surfaces cheeks, others to the surface of the mandrel, attaching them to them, forming on the mandrel part of the inner side housing insulation with a stepped> stepped surface and end housing insulation, and the released rings are removed from the mandrel, the insulating tape is wound on the mandrel and stepped surfaces until an equal number is obtained layers of tape, forming the inner side housing insulation, and after winding the layers of the winding wire and, interlayer insulation, the ends of the tape bent to the end surfaces of the cheeks are laid on the wound wire and form while parts of the outer side housing insulation with a stepped surface, after which the insulation tape is wound on a wound drive and stepped surfaces to obtain an equal number of layers of tape, forming the outer I side housing insulation. 2. A device for the manufacture of a cylindrical winding of a transformer, comprising a mandrel with two cheeks located at its ends, characterized in that, with a chain for increasing the reliability of the winding by evenly distributing layers of insulation tape, it is equipped with two rows of technological rings, each of which is made of ring sectors fastened together by means of detachable connections.