安全壳喷淋泵设计、数值模拟与试验研究

发布时间：2018-01-05 04:08

本文关键词：安全壳喷淋泵设计、数值模拟与试验研究　出处：《江苏大学》2017年硕士论文　论文类型：学位论文

【摘要】：安全壳喷淋泵是核电站安全壳喷淋系统的重要设备,其研发的技术难度大,附加值高。现有在役运行的产品多为国外品牌,总体方案多采用诱导轮带多级单吸叶轮,水力效率不超过75%。随着国内核电市场的扩大,研发一款技术先进、性能指标领先的安全壳喷淋泵,有着重要意义。同时,研发过程的分项课题攻关,对于将来类似结构产品的开发也是关键技术储备。本文结合安全壳喷淋泵的研发进行的主要工作有:1.对安全壳喷淋泵在核电厂内的应用做了简要介绍,并对国内外同类产品的研究成果进行了和总结。2.采用与国外产品不同的技术路线,开发了首级双吸带两级单吸叶轮配碗形导流壳的水力方案,最高效率达84%,高效区宽,汽蚀余量满足设计任务书要求。3.根据核二级泵的特殊要求完成了安全壳喷淋泵的总体结构设计,采用立式筒袋式抽芯结构方案,并针对热冲击工况和杂质运行工况的特殊要求对转子部件和轴封系统做了特殊设计,完成设计计算。4.利用Proe软件完成了整泵的三维建模,并基于虚拟样机进行了重心计算、装配干涉检查等工作。5.利用数值模拟手段对泵在不同工况点的内流场进行了分析,根据分析结果检查了流场内部压力分布和流态,确认了过流部件的型线,使得最终得到的水力方案满足设计要求。6.针对包含SSE地震载荷的条件下的承压边界可靠性和转子系统稳定性进行了校核,作为设计计算的验证手段。7.按照技术规格书要求,建造了工程样机,编制了样机试验大纲,并对工程样机进行一系列试验,测试结果满足技术规格书关于常规运行工况和特殊事故工况等预设工作条件的要求。针对本产品设计的部分专用试验装置可以在将来相似结构的产品测试中使用。8.结合本产品的研发工作对后续类似泵的研究方向提出了展望。
[Abstract]:Containment spray pump is an important equipment of containment spray system in nuclear power plant. Its research and development is very difficult and the added value is high. Most of the products in service are foreign brands. With the expansion of the domestic nuclear power market, the development of a new containment spray pump with advanced technology and leading performance index is adopted in the overall scheme of induction wheel multi-stage single suction impeller with hydraulic efficiency not more than 750.With the expansion of the domestic nuclear power market, a containment spray pump with advanced technology and leading performance index is developed. At the same time, the research and development process of the sub-topic to tackle the key. The development of similar structural products in the future is also a key technical reserve. The main work of this paper combined with the research and development of containment spray pump is: 1.The application of containment spray pump in nuclear power plant is briefly introduced. The research results of the same kind of products at home and abroad are summarized and summarized. 2. The hydraulic scheme of the first stage double suction belt two stage single suction impeller with bowl-shaped diversion shell is developed by adopting different technical routes with foreign products. The maximum efficiency is 84, the high efficiency area is wide, and the cavitation allowance meets the requirements of the design specification. 3. According to the special requirements of the nuclear secondary pump, the overall structure design of the containment spray pump is completed. The vertical cylinder bag core-pulling structure was adopted and the rotor parts and shaft seal system were designed according to the special requirements of thermal shock and impurity operating conditions. The 3D modeling of the whole pump is completed by using Proe software, and the center of gravity is calculated based on the virtual prototype. The internal flow field of the pump at different working conditions is analyzed by numerical simulation. According to the analysis results, the internal pressure distribution and flow state of the flow field are checked, and the profile of the over-flow components is confirmed. The final hydraulic scheme meets the design requirements. 6. Check the reliability of the bearing boundary and the stability of rotor system under the condition of SSE seismic load. As the verification means of design and calculation. According to the technical specifications, the engineering prototype was built, the prototype test outline was compiled, and a series of tests were carried out on the engineering prototype. The test results meet the requirements of the technical specification for normal operating conditions and special accident conditions. Some special test devices designed for this product can be used in future product testing with similar structures. Combined with the research and development of this product, the future research direction of similar pumps is put forward.
【学位授予单位】：江苏大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM623

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