摘要
AP1000反应堆冷却剂系统的设计中,反应堆冷却剂泵(RCP)直接焊接在蒸汽发生器(SG)腔室封头上。这样的设计使得蒸汽发生器下腔室和主泵入口段的流场复杂化,有可能在蒸汽发生器下腔室出口或主泵入口产生漩涡,从而使得SG出口阻力增大,并影响主泵的长期稳定运行,降低主泵的水力效率。对于该问题,AP600设计过程中做过相关的试验,但试验费用很高,且试验结果的普适性不高,参数和设备尺寸稍有修改则试验结果将不再适用。为了解决这个问题,本文考虑采用新一代的CFD数值模拟工具PumpLinx进行研究,分析蒸汽发生器和反应堆冷却剂泵流畅的耦合情况。考虑到建立主泵三维模型的难度,本文的思路是首先采用Pro/ENGINEER专业造型软件建立蒸汽发生器腔室封头和两台主泵泵壳的三维模型,再采用CFX建立主泵叶轮和导叶的模型,然后采用PumpLinx对模型进行整合并划分网格并进行分析,得出主泵和蒸汽发生器耦合部分的流场情况,从而为AP1000设计提供支持。
Background： In the design of API000, Reactor Coolant Pump （RCP） is welded directly to the Steam Generator （SG） channel head. But this design makes the flow field in the SG channel head and RCP inlet complex and there may be vortex in this flow field for which reason the SG outlet resistance will increase and affect the long-term steady operation. Purpose： For this issue, some companies made tests on it. But the cost of test is high and the applicability of the test result is limited. If the parameters or components size changed a little, the test result will be no longer applicable. This article aims to find a way to solve this problem. Methods： This article considers using PumpLinx, a 3-D CFD flow field analysis software to analyse the SG and RCP coupled flow field. First, Pro/ENGINEER is applied to establish the 3D model of SG channel head with two RCPs welded to it and then establish mesh in PumpLinx and then analyze the problem in PumpLinx with Dynamic Mesh method. Results： The flow filed varying condition of SG-RCP coupled part from RCP rotation beginning to steady operation and the vortex condition after steady operation are obtained so as to support plant design. Conclusions： PumpLinx is suitable for API000 reactor coolant pump flow field CFD analysis.
出处
《核技术》
CAS
CSCD
北大核心
2013年第4期101-107,共7页
Nuclear Techniques
