Novel dry-type RIP sleeve core and winding process thereof

Abstract

The invention relates to a novel dry-type RIP sleeve core. The core is characterized by comprising a conductive tube, a buffer layer, epoxy resin, zero-layer electrode aluminum foil, voltage-sharing electrode aluminum foil, winding insulation paper and leveling insulation paper. The buffer layer is wrapped between the zero-layer electrode aluminum foil and the conductive tube, and the end part is electrically connected with the outer surface of the conductive tube by adopting a plurality of tinned copper strips; the conditions of capacitance change and electrode position change caused by stripping of the zero-layer electrode aluminum foil from the conductive tube due to thermal expansion are avoided, and the reliability of an RIP sleeve is improved; two sides of the aluminum foil voltage-sharing electrode are coated with a coupling agent, the coupling agent chemically reacts with the resin at a high temperature, bonding is realized through chemical bonding force, the bonding is firm, and internal cracking of the sleeve core caused by different thermal expansion coefficients of epoxy resin and the aluminum foil or external force is avoided; and a layer of leveling insulation paper is wound on the edge position of the voltage-sharing electrode aluminum foil so as to counteract the influence of non-uniform thickness, and it is guaranteed that the voltage-sharing electrode aluminum foil does not deviate in the winding process.

Description

technical field [0001] The invention relates to the technical field of dry RIP casing core processing, in particular to a novel dry RIP casing core and a winding process thereof. Background technique [0002] In general RIP sleeves, the outer contour of the conductive tube is directly wrapped with aluminum foil as the 0-layer electrode, and the conductive tube is shielded by the 0-layer electrode, so that the conductive tube only serves as an electrical connection without sharing the field of epoxy resin Strong; but in this structure, because the conductive tube is generally made of aluminum tube or copper tube structure; when the ambient temperature changes, the conductive tube will expand with heat and contract with cold due to the characteristics of the material; and the conductive tube directly Due to the thermal expansion and contraction of the conductive tube, the aluminum foil of the 0-layer electrode that is wound and connected will change the position of the electro...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a new type of dry RIP casing core and its winding process, which can solve the problem of the general RIP casing core due to the large circumferential shrinkage stress of the cured product in the subsequent RIP casing. Core turning, assembly, and core pulling can easily cause cracking of the RIP casing core under the action of external forces

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