现代应用物理2025，Vol.16Issue(3)：59-63,5.DOI:10.12061/j.issn.2095-6223.202409029
压水堆核电厂燃料组件提升力试验研究
Experimental Study of Fuel Assembly Lifting Force in PWR Nuclear Power Plants
摘要
Abstract
The first domestic fuel assembly lifting force test for PWR nuclear power plants is completed.In the test,the fuel assembly is simulated with 1:1 equal density.The test conditions include free and compressed outlet nozzle hold-down spring of the fuel assembly under air conditions without water,compressed outlet nozzle hold-down spring of the fuel assembly under hydrostatic conditions(test vessel fully filled with water,pump inactive),and compressed outlet nozzle hold-down spring of the fuel assembly under dynamic water conditions with different coolant flow rates at room temperature.The coolant flow rate ranged from 250 to 500 m3·h-1,and the test water temperature is below 60℃.The measured values of the simulated fuel assembly lifting force at different coolant flow rates are obtained,and the relationship curve between the simulated fuel assembly lifting force and the coolant flow rate is fitted.The measured values of the simulated fuel assembly lifting force are highly consistent with the estimated values obtained from the classical mechanical calculation formula,and the relative deviations are-1.57%to 2.86%,which verifies that the measured data of the simulated fuel assembly lifting force are accurate and credible.This paper provides reliable test data for determining the preload force of the outlet nozzle hold-down spring on the fuel assembly.关键词
燃料组件/提升力试验/上管座板弹簧压紧力Key words
fuel assembly/lifting force test/preload force of the outlet nozzle hold-down spring分类
能源科技引用本文复制引用
姚瑞,樊睿辰,王海宇,瞿淼,魏宗岚,任全耀,杜思佳..压水堆核电厂燃料组件提升力试验研究[J].现代应用物理,2025,16(3):59-63,5.基金项目
国家自然科学基金资助项目(51406189) （51406189）
