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为研究高温高压且工作介质为蒸汽的情况下超临界火电站迷宫式调节阀的迷宫式流道结构,用CFD方法计算了迷宫式流道流场,通过常温常压试验数据验证了流动计算方法的正确性,并利用单向流固耦合方法计算了盘片应力场,分析了倒角、流道深度、进出口宽度、盘片厚度对流道流场、盘片应力的影响。结果表明,倒角、进口宽度、流道深度等参数对流量影响较大,而出口宽度对其影响较小;进口宽度、盘片厚度等参数对盘片应力分布影响较大,而倒角对其影响较小。
In order to study the labyrinth passage structure of the labyrinthine valve of supercritical thermal power station under the condition of high temperature and high pressure and working medium, the labyrinthine flow field was calculated by CFD method and the flow calculation method was verified by the test data of normal temperature and pressure The stress field of the disk was calculated by the one-way fluid-solid coupling method. The effects of chamfering, depth of flow channel, inlet and outlet width and disk thickness on flow field and disk stress were analyzed. The results show that the parameters such as chamfer, inlet width and depth of flow passage have greater influence on the flow rate, while the outlet width has less influence on it. The parameters such as width of inlet and thickness of disc have a significant influence on the stress distribution of disc, Its impact is small.