论文部分内容阅读
供水管路系统初期充水或设备检修后,在管路末端充水过程中需在有限空间内通过消能设施消减上游大量水流能量。针对传统内消能工占有较大空间或水流需较长的恢复长度等问题,提出了一种新型结构紧凑型高效能消能器,通过水工物理模型试验,研究了消能器过流能力特性和脉动压力特性,并通过数值模拟研究了消能器的水流空化特性。结果表明,该种消能器采用多层次的消能措施,优化布置了内部体型结构,占用极小的空间的同时具有较高的消能率,且空化性能良好。
After the initial filling of water supply pipeline system or equipment overhaul, in the process of filling the end of the pipeline in a limited space through the energy dissipation facilities to reduce a large upstream water energy. Aiming at the problems such as the large space occupied by traditional energy dissipaters or the long recovery length of water flow, a new type of compact and highly efficient energy dissipater is proposed. Through the hydro-physical model test, the overcurrent capability of the energy dissipater Characteristics and pulsating pressure characteristics, and numerical simulation of the flow cavitation characteristics of the energy dissipater. The results show that this kind of energy dissipater adopts multi-level energy dissipation measures, optimizing the layout of the internal body structure, occupying a very small space, high energy dissipation rate and good cavitation performance.