A current transformer intermediate potential shielding assembly method and assembly tooling

Abstract

The invention discloses an intermediate potential shielding assembly method and assembly tooling. The intermediate potential shielding assembly method includes the following steps: Step 1, the pre-installed assembly formed by butting the shielding cylinder and the insulating cylinder is installed vertically between the upper and lower positioning seats of the assembly tool; Step 2, detecting and adjusting the upper and lower positioning The relative positions of the two positioning parts corresponding to each other on the seat, until the upper and lower positioning seats are in the alignment position where the two positioning parts are in the same vertical direction; step 3, keep the upper and lower positioning seats in the alignment position, and Adhesive is poured into the mating parts of the shielding cylinder and the insulating cylinder of the pre-assembled components. During this process, the upper and lower positioning seats are always coaxially and detachably connected to the two ends of the pre-assembled component. The opposite ends, so the entire pre-assembled assembly will maintain a vertical direction, so this assembly method has the advantages of low difficulty in implementation and easy operation.

Description

technical field [0001] The invention relates to an assembling method and an assembling tool for an intermediate potential shielding of a current transformer. Background technique [0002] Epoxy resin adhesive is a kind of engineering adhesive prepared by epoxy resin base material, curing agent, accelerator and filler. It has the characteristics of good bonding performance and simple bonding process, so it is widely used in industrial fields . There is usually an intermediate potential between the high potential and the ground potential of a 500KV current transformer, and the shielding structure on the intermediate potential is usually adopted such as figure 1 As shown in the intermediate potential shield, the core components of the intermediate potential shield are the coaxial butt joint insulating cylinder 8 and the shielding cylinder 7, and the shielding cylinder 7 and the insulating cylinder 8 are fixed by bonding. However, due to the fact that there are few domestic ma...

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Problems solved by technology

However, in this assembly method, the positioning stage of the insulating cylinder and the shielding cylinder before glue filling and the curing stage after glue filling all rely on the gap between the outer peripheral surface of the shielding cylinder and the wall surface of the socket hole of the insulating cylinder. The positioning is achieved by the guidance and coordination of the external tooling, so the outer peripheral surface of the plug-in end of the shielding tube and the wall of the plug-in hole of the insulating tube need higher processing accuracy and assembly accuracy, which will not only increase the current transformer. The processing difficulty and cost of intermediate potential shielding will also prolong the assembly cycle of current transformer intermediate potential shielding and reduce work efficiency

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