CN103531352A

CN103531352A - Manufacturing method and technology for rolling small radial insulation end ring of transformer

Info

Publication number: CN103531352A
Application number: CN201210417639.0A
Authority: CN
Inventors: 郭克磊; 范新跃
Original assignee: LUOYANG HUA MING TRANSFORMER CO Ltd
Current assignee: LUOYANG HUA MING TRANSFORMER CO Ltd
Priority date: 2012-10-29
Filing date: 2012-10-29
Publication date: 2014-01-22

Abstract

The invention discloses a manufacturing method and technology for rolling a small radial insulation end ring of a transformer. The manufacturing method and technology solve the problems that a traditional manufacturing technology is poor, long in production period, low in insulation paperboard utilization rate and the like. According to the scheme for solving the problem, the production technology is improved, the manufacturing method that firstly, a lamination paperboard or a thick paperboard is milled into narrow strip materials according to the radial size of the insulation end ring, secondly, the narrow strip materials are rolled to be round on a three-roller round rolling machine, and finally two breaking heads are provided with straight openings to be in butt joint to form the end ring is adopted. With the production method for manufacturing the small radial insulation end ring of the transformer and the machining technology, the production efficiency is improved, material consumption is reduced, and the economic benefits are obviously increased.

Description

Roll extrusion manufacture method and the technique of the little radial insulating end ring of a kind of transformer

Technical field

The present invention relates to field transformer, roll extrusion manufacture method and the technique of the little radial insulating end ring of especially a kind of transformer.

Background technology

The conventional fabrication processes flow process of the insulating end ring of transformer coil and static board skeleton is as follows: insulating board is sheared square and expected → on circle shearing machine, be cut into paper circle → gluing heat pressure adhesive → turning processing internal-and external diameter.Adopt this kind of technological process to exist technique to fall behind, the problem such as long and insulating board utilance of production cycle is low, while particularly processing radial little, voltage regulation coil insulating end ring that diameter is large and static board skeleton, these problems are more outstanding.

Summary of the invention

For traditional manufacturing technique, fall behind, the problems such as production cycle length and insulating board utilance are low, the scheme of dealing with problems that the present invention proposes is: improvement of production process, adopt and first laminated paper board or millboard are become to fillet material by the radial size milling of insulating end ring, then on three roller spheronizators, roll extrusion is annular, and two broken ends are opened the manufacture method that straight mouthful of docking is end circle.

The invention has the beneficial effects as follows: adopt rolling process to manufacture production method and the processing technology of the little radial insulating end ring of transformer, not only enhance productivity, reduce material consumption, and it is obvious to increase economic benefit.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the present invention is further detailed.

Fig. 1 is three roller spheronizator roll extrusion end circle schematic diagrames; Fig. 2 is little radial end circle schematic diagram; Fig. 3 is large radial end circle schematic diagram.

Wherein, 1. cardboard; 2. top roll; 3. lower roll.

Embodiment

Rolling process is manufactured technological process and the processing method of insulating end ring: adopt laminated sheet heat pressure adhesive → become fillet material → be rolled into annulus along cardboard transverse mechanism direction on three roller spheronizators by the radial size milling of the machine direction of laminated sheet and end circle, as Fig. 1 → uses mould shape is dry, process → mark closed line → sawing end circle of end circle straight mouthful of overlap joint → directly a mouth gluing overlaps curing production technology.The little radial end circle of making as shown in Figure 2.

In addition, for the larger end circle of radius, as 110kV and following transformer, increase little radial end circle splicing operation, it is bonding that ectonexine end circle is opened straight mouthful of overlap joint, the docking of intermediate layer end circle, seam staggers along circumference, makes large radial end circle, as shown in Figure 3.

Claims

1. roll extrusion manufacture method and the technique of the little radial insulating end ring of transformer, is characterized in that: adopt laminated sheet heat pressure adhesive → by the radial size milling of the machine direction of laminated sheet and end circle become the dry closed line → sawing end circle of processing → mark end circle of fillet material → be rolled on three roller spheronizators along cardboard transverse mechanism direction annulus → uses mould shape straight mouthful of overlap joint → directly a mouth gluing overlaps curing production technology.

2. roll extrusion manufacture method and the technique of the little radial insulating end ring of transformer according to claim 1, it is characterized in that: for 110kV and following transformer, increase little radial end circle splicing operation, it is bonding that ectonexine end circle is opened straight mouthful of overlap joint, intermediate layer end circle docking, seam staggers along circumference, makes large radial end circle.