600MW超超临界汽轮机高压主汽调节联合阀内部流场的数值模拟分析  

Numerical Simulations of the Flow Field inside High Pressure Combined Valve of a 600MW Ultra Supercritical Steam Turbine

作　　者：董建华[1] 刘艳[2] 

机构地区：[1]哈尔滨汽轮机厂有限责任公司,哈尔滨150046 [2]大连理工大学,大连116000

出　　处：《汽轮机技术》2009年第2期107-110,共4页Turbine Technology

摘　　要：采用非结构化四面体网格,对某600MW超超临界汽轮机组高压主汽调节联合阀的额定工况进行了数值模拟。针对3种不同结构的模型分别进行了计算,分析研究了阀门内部流场的流动特性,以及在主汽阀内加置挡板和滤网对内部流场和阀门损失的影响。Unstructured tetrahedral meshes are used to simulate the flow field inside high pressure combined valves of a 600MW ultra supercritical steam turbine under the nominal condition. Three physical modes with different structures are considered. The characteristics of the flow field inside valves are investigated. Effects of a baffle and a filter screen placed in the main steam valve on flow are also discussed in the paper.

关 键 词：主汽调节联合阀 流动特性 数值模拟 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]