Gas leak repair method and gas leak repair structure

A cost-effective gas leak repair method using common components like modified nuts and sealing materials creates a systematic seal in gas-filled devices, addressing the challenges of specialized part reliance and enabling on-site adoption.

JP7873706B2Active Publication Date: 2026-06-12HOKKAIDO ELECTRIC POWER COMPANY INC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
HOKKAIDO ELECTRIC POWER COMPANY INC
Filing Date
2024-07-24
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

Existing gas leak repair methods in gas-filled devices like gas circuit breakers are costly and difficult to implement due to the use of specialized parts, making widespread adoption on-site challenging.

Method used

A method using readily available components such as modified tall nuts, O-ring bolts, twine, and sealing materials to create a systematic seal around the gas leak point, guiding gas flow through a secured path and applying a deformable final seal layer to accommodate thermal expansion.

Benefits of technology

Enables effective gas leak repair using common materials, reducing costs and allowing on-site implementation without specialized tools, while maintaining a secure seal even under pressure.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide a gas leak repair method and structure capable of repairing a gas leak using easily available parts even when gas is sealed inside a device. [Solution] The gas leak repair method includes the steps of wrapping a cord 3 around the boundary between the equipment body 11 and the closing flange 12, positioning a high nut 4 with a portion of the cord 3 housed inside so that it contacts the boundary, sealing the boundary and a portion of the high nut 4 with a sealant 6, and positioning a bolt 5 with an O-ring inside the high nut 4 to seal the high nut 4.
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