蒸汽阀动态流阻特性研究

某热力系统中蒸汽阀动态流阻特性对其总体性能设计十分关键。由于该蒸汽阀结构特殊、流速高,无法借鉴一般蒸汽阀门的流阻特性,且仿真分析难以获得较准确的数值,需进行试验研究。基于蓄热器放汽过程流量计算原理,建立了蒸汽阀动态流阻特性试验研究的一般原理、试验分析数学模型等试验研究方法,并通过多工况动态试验验证,获得了本蒸汽阀的动态流阻特性,为该热力系统的设计提供了有力支撑。同时该试验研究方法,可推广应用于类似蒸汽调节阀的动态流阻特性研究。

Experiment Research on Dynamic Flow-resistance for a Steam Valve

In a thermal system, the dynamic flow-resistance of the steam valve is very important for its main performance. The structure of the valve is unusual and the flow velocity is high, it is difficult to use the flow resistance of other valves, and the simulation analysis is uncertain, so the experiment research is necessary. In this paper, based on the principle of the flow calculation for the discharging process of a steam accumulator, the common experiment principle and analysis formula of the dynamic flow-resistance for a steam valve is set up. Then the dynamic experiment is made with the different pressure, and the dynamic flow-resistance is got, which is put efforts to the design of the thermal system. At the same time, the experiment research method could be popularized for other steam valves.