摘要
反应堆冷却剂泵(以下简称主泵)轴密封由3级相同的动压机械密封串联组成,是主泵的心脏,其泄漏量直接决定主泵能否正常运行。本文提出了一种新型的挤压变形研磨法完成动压机械密封的制造,应用挤压变形工装和金属垫片使静环产生变形,在密封端面研磨出9个波形槽。功能实验表明,新型的机械密封在考核压力下的低压泄漏量满足主泵轴密封的设计要求;压力突变工况下的冲击考核实验表明,新型的动压机械密封摩擦副之间的液膜刚度未发生破坏,未出现密封失效。本文研发的动压机械密封在核电厂的运行状况与实验结果完全吻合,充分证明了该新型动压机械密封具有极高的工程应用可靠性。
The shaft seal of reactor coolant pump(RCP)consists of three same hydrodynamic mechanical seals in series.It is the heart of RCP and its leakage directly determines the normal operation of the RCP.This paper introduces a new extruding deformation lapping method to manufacture the hydrodynamic mechanical seal.The stationary ring is deformed by using the extruding deformation tool and metallic gasket,and nine waveform grooves are produced on the seal end face.The function test showed that the low-pressure(LP)leakage meets the design requirement of the shaft seal under the examination pressure.Meanwhile the impact examination under the saltation pressure showed that the liquid film between new hydrodynamic mechanical seal friction pair was intact,and no failure occurred on the seal.The operation of this hydrodynamic mechanical seal in the nuclear power plant shows that the operation performance agrees well with the function test results,and proves that this new hydrodynamic mechanical seal is with a high reliability in engineering application.
作者
冯晓东
马宇
宋奎龙
谈和平
李梦启
吕延光
Feng Xiaodong;Ma Yu;Song Kuilong;Tan Heping;Li Mengqi;Lv Yanguang(School of Energy Science and Engineering,Harbin Institute of Technology,Harbin,150001,China;Harbin Electric Power Equipment Co.Ltd.,Harbin,150066,China;Sino-French Institute of Nuclear Engineering and Technology,Sun Yat-Sen University,Zhuhai,Guangdong,519082,China)
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2019年第3期142-145,共4页
Nuclear Power Engineering
基金
黑龙江省自然科学基金(E2018018)
国家自然科学基金(11875330)