An epoxy resin casting type instrument transformer injection connection sealing device

By employing a dual-sealing structure of polypropylene connectors and sealing rings, along with an L-shaped connecting pipe design, the problems of material leakage and repeated disassembly/reassembly during the injection process of epoxy resin cast instrument transformers are solved. This enables efficient and clean injection operations, improving the reliability and ease of operation of the equipment.

CN224287992UActive Publication Date: 2026-05-26SHANDONG TAIKAI POWER ELECTRIC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG TAIKAI POWER ELECTRIC
Filing Date
2025-05-14
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In the existing technology, epoxy resin cast instrument transformers are prone to leakage during the injection process and repeated disassembly and reassembly of the injection port, resulting in abnormal product quality, dirt and grime at the work site, and inconvenience in using the equipment.

Method used

The system employs a dual-sealing structure of polypropylene connectors and sealing rings, combined with an L-shaped transition pipe and an annular material trough, to achieve effective sealing and automatic introduction and collection of epoxy resin mixtures. The connectors are fixed by hydraulic cylinders to prevent leakage and simplify the disassembly and assembly process of the injection port.

Benefits of technology

It effectively prevents material leakage, keeps the work site clean, improves work efficiency, simplifies equipment operation, and extends equipment life.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses an epoxy resin casting type instrument transformer injection connection sealing device, belonging to the field of instrument transformer molding technology. It includes a transition pipe with a polypropylene connector installed at its upper end. A sealing ring is fitted onto the polypropylene connector. The lower end of the transition pipe has anti-detachment teeth. An annular material groove is fitted onto the upper half of the transition pipe, and a guide pipe is provided on the annular material groove. A hydraulic cylinder fixes the polypropylene connector to the mold inlet. The polypropylene connector and the sealing ring provide a double seal at the interface, ensuring that the epoxy resin will not leak at the connection point under pressure injection. When the transition pipe and polypropylene connector are separated, under pressure, the epoxy resin mixture flows into the annular material groove and then into a collection bucket for unified treatment via the guide pipe on the annular material groove. This solves the problem of repeated disassembly and reassembly of the injection port, improves work efficiency, and keeps the work site clean and tidy.
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