核反应堆压力设备环形密封面泄漏监测与分析诊断研究

Leakage Monitoring and Analysis Diagnosis Research on Ring Sealing Surface of Pressure Equipment in Nuclear Reactor

摘要:

针对核反应堆压力设备环形密封面进行了泄漏监测与分析诊断研究,以自主化研制的新型蒸汽发生器的密封性能验证为对象,搭建了环形密封面泄漏监测系统,通过制作等比例试验件开展泄漏模拟试验验证了监测系统的有效性。针对蒸汽发生器,开展了数个升降温循环及稳态瞬态等密封性能试验的验证,试验中未监测到泄漏。试验后对蒸汽发生器监测数据进行了深层次分析,通过数据拟合与数据分布两个角度与模拟件真实泄漏数据进行对比分析论证,最终证明了研制的新型蒸汽发生器环形密封面的声发射监测数据不符合泄漏数据的衰减规律,因此蒸汽发生器未发生介质泄漏,密封性能可靠,具有工程应用的可靠依据,同时该监测方法也可进一步推广到其它压力设备的环形密封面的泄漏监测中。

Abstract:

This paper studied leakage monitoring, analysed and diagnosed the data on ring sealing surface for pressure equipment in nuclear reactor, using a new type of self-developed steam generator as an object, created the ring sealing surface leakage monitoring system. The effectiveness of the monitoring system is verified by the leakage simulation test conducted by the production of proportional test pieces. For the steam generator, several sealing performance tests such as lifting and cooling cycles and steady-state or transient were carried out, but no leakage was detected during the tests. After test in combination with data of analog real leak, analysed deeply on the monitoring data of steam generator, using data fitting and data distribution two different ways to compare with real leaking data, finally proved ring sealing surface of steam generator without medium leakage, sealed performance is reliable, this monitoring method can be further extended to other pressure equipment of the ring sealing surface leakage monitoring.