Generator transformer

Abstract

The inventing belongs to the field of transformer fabrication and specifically relates to a novel three-phase generator transformer with ultra-high capacity and high voltage. A boosting seat at the high-voltage outlet terminal of the transformer is turned at 5-15 DEG angle to the side away from the transformer. An oil reservoir is positioned above the master oil tank of the transformer in a way that the longitudinal direction of the oil reservoir is parallel to the long axis of the oil tank. An insulating paper plate is provided between the contact surfaces of the upper / lower iron core fasteners and the iron core of the transformer, thereby completely isolating the upper / lower iron core fasteners, and the upper / lower iron core fasteners are connected with the iron core by grounded wires, thereby allowing the upper / lower iron core fasteners to be grounded individually. A fastener magnetic shield is fixed on the ventral plate of each of the upper / lower iron core fasteners of the transformer by using a two-way screw bolt. A limb plate of the upper iron core fastener of the transformer is retracted inside the fastener. A suspended ring on the ventral plate of the upper iron core fastener is covered with a Cu shield on the outer surface. An iron yoke block is provided between the coil and the lower part of the oil tank inside the transformer and is provided thereon with an elongated fan-shaped oil inlet / outlet, the oil inlet / outlet being positioned above the exit of the oil tank.

Description

technical field [0001] The invention belongs to the field of transformer manufacturing, in particular to a novel generator transformer with super large capacity, high voltage and three-phase integration. Background technique [0002] At present, in order to ensure the external insulation distance in the external arrangement of the existing ultra-large capacity and high voltage transformers, the oil conservator is usually arranged outside the main body of the transformer. Although this arrangement can ensure the insulation distance, it increases the overall outer limit size of the transformer. At the same time, since the oil conservator is far away from the main body, it also increases the difficulty of supporting the oil conservator. [0003] The upper and lower clamps of the iron core of the transformer are not insulated from the upper beam, feet, side beams, and one end of the pull belt, so that they are connected as a whole through the pull plate and then connected with ...

AI Technical Summary

Problems solved by technology

[0006] In addition, in the existing generator transformers, the current transformers at the low-voltage and high-current input terminals are all installed on the single-phase sealed mother side of the generator. The single-phase single riser lead-out structure makes the overall structure of the transformer huge and not compact, and the shielding structure is complicated and the effect is not good, resulting in overheating of the product and affecting the safe operation and service life of the transformer

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