Dry type transformer and insulating cushion block therefor

Abstract

The invention discloses an insulating cushion block for a dry type transformer, and belongs to the technical field of the dry type transformer. The insulating cushion block comprises a cushion block body with a certain thickness and a positioning block; a sliding groove is formed in one side of the cushion block body; the positioning block is glidingly arranged in the sliding groove of the cushion block body; and a counter bore for allowing a fastener to insert is also formed in the cushion block body. The invention also provides the dry type transformer applying the insulating cushion block. The insulating cushion block is universal, and can adapt to the dry type transformers of different capacities, so that the die costs and storage costs of different insulating cushion blocks of transformer manufacturers are greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of transformers, and in particular relates to an insulating pad for a dry-type transformer and a dry-type transformer using the insulating pad. Background technique [0002] Dry-type transformers are widely used in hospitals, high-rise buildings, airports, wharf CNC machinery and other places with fire protection and environmental protection requirements. Simply put, dry-type transformers refer to transformers whose iron core and windings are not immersed in insulating oil. The coils of dry-type transformers are usually supported and compressed with insulating pads. Such as figure 1 As shown, it gives a schematic diagram of the local structure of a traditional dry-type transformer, including a high-voltage coil 10, a low-voltage coil 11, an upper clamp 12, a lower clamp 13, an upper insulating spacer 14 and a lower insulating spacer 15, wherein the upper insulating The spacer 14 and the lower insulating sp...

AI Technical Summary

Problems solved by technology

from figure 1 It can be seen that the thicknesses of the upper insulating spacer 14 and the lower insulating spacer 15 are different, so although the shapes of the two are similar, they cannot be used up and down.

Furthermore, for dry-type transformers with different capacities, the types of insulation pads will also be different, which requires many kinds of molds, and at the same time, insulation pads of each capacity need to be kept in stock, resulting in inventory costs

Images