摘要
针对国家重大技术装备战略发展清洁高效燃煤技术的需要,研发一种用于660 MW超临界机组再热器减温水调节阀。为保证阀门结构的安全可靠性,利用有限元法对再热器减温水调节阀进行不同载荷下强度校核,同时模拟电厂作业工况进行热结构耦合分析;为了解振动特性,对阀门整体结构进行预应力模态分析。结果表明:再热器减温水调节阀材料选择合理,结构强度满足设计要求,并有一定的安全欲度;模态分析得到了阀门的固有频率及相应振型,进而为避免与系统管道共振、降低噪声提供依据,对工程中再热器减温水调节阀的设计及运行具有指导意义。
In view of the need to develop clean and efficient coal-fired power plant for the national major technology and equipment, the development of a new type of 660 MW supereritieal unit reheater spraying water valve is introduced. In order to ensure the safety and reliability of valve structure, the finite element method is used to cheek the strength of reheater spraying valve under different loads, and the thermal structure coupling analysis of power plant operation is sinmlated. In order to understand the vibration characteristics, the prestress modal analysis of the valve structure is carried out. The results show that the materials of the reheater spraying water valve are reasonable, the structural strength meets the design requirements and has a certain degree of safety; the natural frequencies and corresponding vibration modes of the valve are obtained through modal analysis. In order to avoid resonance with the system piping, providing a basis for reducing noise.
作者
陈宁
张江涛
成晓伟
李俊
CHEN Ning;ZHANG Jiang-tao;CHENG Xiao-wei;LI Jun(Power China SPEM Limited Company,Shanghai 201316,China)
出处
《液压气动与密封》
2018年第9期70-73,共4页
Hydraulics Pneumatics & Seals
基金
中国电建集团重大科技项目(DJ-ZDXM-2016-38)
关键词
再热器减温水
调节阀
有限元分析
模态分析
reheater spraying water
regulating valve
finite element analysis
modal analysis
