| 摘要 |
<p>A stereo-triangular wound-core power transformer with a voltage class more than or equal to 110kV is disclosed. The power transformer includes a stereo-triangular wound core (1) and windings (21, 22, 23). The stereo-triangular wound core consists of iron yokes (11) and three iron core pillars (12). The three iron core pillars are arranged in a regular triangle, and every two adjacent iron core pillars are connected through the iron yoke. The power transformer further includes angle rings (3), end rings (4), insulating end rings (5), insulating end plates (6) and frame-type clamps (7), wherein the angle rings, the insulating end rings, the end rings and the insulating end rings are sequentially arranged at two ends of each iron core pillar. The ends of the iron core pillars are further arranged on the insulating end plates. The frame-type clamps cover the iron yokes. Support plates (71) on the frame-type clamps are connected with the insulating end plates through pressing nails (8). In the transformer, the tight winding among silicon strips is realized, and the magnetic conduction direction of the silicon strips is identical to the magnetic circuit direction of the iron core. The vibration is dampened during the working of the transformer and the noises caused by the disconnected magnetic circuit of a laminated iron core are eliminated.</p> |
