直动电磁阀磁场特性分析

摘要

The Hydraulic Control Rod Drive Technology (HCRDT) is a newly invented patent of the Institute of Nuclear and New Energy Technology, Tsinghua University with HCRDT's independent intellectual property rights. The integrated valve which is made up of three direct action solenoid valves is the key part of this technology, so the performance of the solenoid valve directly affects the function of the integrated valve and the HCRDT. Based on the abnormal conditions occurring in the operation of the Control Rod Hydraulic Drive System, the electromagnetic field of the direct action solenoid valve is analyzed using the ANSYS software. The result shows that the incorrect use of the magnetic material causes the change of magnetic circuit and the reverse of the magnetic force direction in some conditions, which leads to the malfunction of the solenoid valve and the Control Rod Hydraulic Drive System. Further more, the design of the direct action solenoid valve can be optimized by the analysis of electromagnetic field.%控制棒水压驱动技术是清华大学核能与新能源技术研究院具有自主知识产权的一项新型发明专利技术.组合阀属于该项技术的关键部件,组合阀是由三个直动电磁阀组成,电磁阀的性能直接影响组合阀的性能,从而影响控制棒水压驱动技术的运行性能.本文就控制棒水压驱动系统运行过程中所出现的异常工况,运用ANSYS电磁场分析软件,对其直动电磁阀的多种运行工况进行了电磁场特性分析.分析结果表明:导磁材料的不当使用形成磁路的改变,引起某些工况下磁力反向,使电磁阀在特定情况下出现故障,进而造成控制棒水压驱动系统异常;通过电磁场特性分析可以进一步优化直动电磁阀的设计.