一种核电厂用轴向中空结构HDPE双层管及其成型模具

By incorporating annular array ribs and axially penetrating monitoring cavities into axially hollow HDPE double-layer pipes used in nuclear power plants, and combining this with fiber optic sensors, the leakage risk and insufficient pressure resistance of nuclear power plant pipelines under radiation environments have been addressed, achieving efficient leakage monitoring and improved molding quality.

CN122034276BActive Publication Date: 2026-07-17ANHUI RUIYUAN PIPELINE CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ANHUI RUIYUAN PIPELINE CO LTD
Filing Date
2026-04-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing seawater circulation pipeline system of nuclear power plants is prone to aging due to long-distance laying and radiation environment, and has problems such as high leakage risk, insufficient pressure resistance and low monitoring integration, which affect environmental and health safety.

Method used

Design an axially hollow HDPE double-layer pipe for nuclear power plants. The inner and outer pipes are provided with annular array ribs and an axially penetrating monitoring cavity. Equipped with fiber optic sensors, it is integrally molded to improve pressure and bending resistance and realize real-time leakage monitoring.

Benefits of technology

It effectively improves the circumferential pressure resistance and axial bending resistance of pipelines, realizes real-time and accurate early warning and location of leaks, avoids environmental risks caused by leaks, and improves production efficiency and molding quality.

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Abstract

本发明公开了一种核电厂用轴向中空结构HDPE双层管及其成型模具,涉及管道技术领域,包括双层管主体,双层管主体包括内管、外管和多个肋条,多个肋条设置于外管与内管之间,且呈环形阵列分布,肋条沿管道轴向连续延伸,在相邻肋条之间形成沿轴向贯通的监测腔道,监测腔道内设置有光纤传感器,形阵列分布的轴向肋条将内管与外管刚性连接为一体,形成类蜂窝增强结构,在控制管材重量的同时,大幅提升周向抗压与轴向抗弯曲性能,可有效抵御埋地敷设时的土壤荷载、交通荷载及地质沉降冲击,避免管道变形、破裂,满足核电厂液态流出物排放管线穿越复杂地形的力学需求。
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