Demoulding tool for epoxy resin dry transformer coil pouring inner mould

Abstract

The invention discloses a demoulding tool for an epoxy resin dry transformer coil pouring inner mould, and belongs to the technical field of transformers. The demoulding tool comprises a base, a hydraulic jack and a pair of fixing plates, wherein the hydraulic jack is arranged at one end of the base, and a push rod points to the other end of the base; the pair of the fixing plates are welded to the base in parallel at interval of a certain distance; a to-be-demoulded coil is arranged between the pair of the fixing plates; a through hole for the push rod of the hydraulic jack to penetrate through is formed in one fixing plate; an outer hole for the stripped coil inner mould to penetrate through is formed in the other fixing plate; the outer hole is an n-shaped hole communicated with the bottom of the fixing plate; and the push rod of the hydraulic jack penetrates through the through hole and pushes against the end surface of the coil inner mould to push the coil inner mould out of the outer hole. The demoulding tool is free of potential safety hazards and low in labor intensity, and can be used anywhere.

Description

technical field [0001] The invention belongs to the technical field of transformers, and in particular relates to a demoulding tool for an epoxy resin dry-type transformer coil casting inner mold. Background technique [0002] Epoxy resin dry-type transformers use epoxy resin as the insulating material. The high-voltage and low-voltage windings are wound with copper strips (foils), and epoxy resin is poured and cured in a vacuum to form a high-strength FRP body structure. The casting inner molds of the small-capacity (250kVA and below) low-voltage coils and (100kVA and below) high-voltage coils of epoxy cast dry-type transformers are integral. The traditional demoulding method is to use a driving crane on the top, and bury the fixing parts below to pull the coil, which is easy to cause frequent damage to the driving, and also has a great potential safety hazard, and a certain area needs to be fixed. Also have the coil to be demolded to be vertically placed on a frock, beat...

AI Technical Summary

Problems solved by technology

The traditional demoulding method is to use a driving crane on the top, and bury the fixing parts below to pull the coil, which is easy to cause frequent damage to the driving, and also has a great safety hazard, and it needs to fix a certain area

It is also possible to directly place the coil to be demoulded vertically on a tooling, and beat it manually to remove the inner mold from top to bottom. This method has great safety hazards for people and is labor-intensive.

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