Research on 3D Printed Heat Pipe for Nuclear Power Plant Accident Cooling Water Tank

HU Yu; HE Gening; FENG Jie; ZHANG Liyu; WANG Jingsong; HAN Juanya

doi:10.7512/j.issn.1001-2303.2026.03.14

Intelligent Nuclear, Additive Future | Views : 0 下载量: 41 CSCD: 0

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Research on 3D Printed Heat Pipe for Nuclear Power Plant Accident Cooling Water Tank
Vol. 56, Issue 3, Pages: 103-110(2026)
Received：14 January 2026，

Revised：2026-02-09，

Published：20 March 2026
DOI： 10.7512/j.issn.1001-2303.2026.03.14
稿件说明：

移动端阅览

胡彧，何戈宁，冯杰，等.一种核电厂事故冷却水箱用3D打印高效热管换热单元技术研究［J］.电焊机，2026，56（3）：103-110. DOI： 10.7512/j.issn.1001-2303.2026.03.14.

HU Yu, HE Gening, FENG Jie, et al.Research on 3D Printed Heat Pipe for Nuclear Power Plant Accident Cooling Water Tank[J].Electric Welding Machine, 2026, 56(3): 103-110. DOI： 10.7512/j.issn.1001-2303.2026.03.14.

摘要

针对“华龙一号”核电厂二次侧非能动余热排出系统事故冷却水箱在长期运行中因沸腾干烧导致非能动运行时间受限的问题，提出一种基于增材制造技术的高效热管换热单元。通过热管传热极限分析，明确了传统热管在携带极限、沸腾极限及蒸发段与冷凝段环境换热极限方面的性能瓶颈。利用激光选区熔融（SLM）增材制造技术，设计制备了内部填充点阵结构、外部设置薄形翅片的蒸发段与冷凝段复杂结构，并在冷凝段增设导流套筒以增强自然对流换热。数值模拟结果表明，导流套筒产生的“烟囱效应”可使冷凝段换热功率提升至无套筒时的2倍以上。在此基础上，搭建了重力热管试验平台，开展不同结构组合与充液量条件下的传热性能试验。结果表明，增材制造热管的传热性能显著优于传统结构，其中由复杂蒸发段与多个模块化冷凝段组合构成的热管（HP-1-4）最大传热量达2 187 W，验证了增材制造技术在提升热管传热面积与传热效率方面的显著优势。

Abstract

To address the limited passive operation time of the accident cooling water tank in the secondary passive residual heat removal system of the HPR1000 nuclear power plant caused by boiling dryout

this study proposes a high-performance heat pipe unit fabricated by additive manufacturing. Heat transfer limit analysis reveals that the conventional heat pipe is primarily constrained by the entrainment limit

boiling limit

and heat transfer limits at the evaporator and condenser sections. Accordingly

a selective laser melting (SLM) additive manufacturing process is employed to fabricate a complex structure featuring internal lattice structures and external thin fins for both evaporator and condenser sections. A diversion sleeve is added to the condenser section to enhance natural convection heat transfer. Numerical results show that the chimney effect induced by the diversion sleeve more than doubles the heat transfer capacity compared to the configuration without a sleeve. A gravity heat pipe test bench is established to evaluate the thermal performance under various structural combinations and liquid filling amounts. Experimental results demonstrate that the additively manufactured heat pipe achieves significantly improved heat transfer performance

with the HP-1-4 configuration (combining a complex evaporator and multiple modular condensers) reaching a maximum heat transfer capacity of 2 187 W. This study confirms the effectiveness of additive manufacturing in enhancing the heat transfer area and efficiency of heat pipes

offering a promising solution for extending the passive operation duration of residual heat removal systems.

关键词

Keywords

references

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