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利用粒子图像测速技术,测试了两种工况下梭锥管混浊流体分离装置(简称梭锥管)内的水沙两相流的速度场,给出了梭锥管内泥沙运动的流速矢量分布及流速大小云图。对测试结果的分析表明,实测结果与理论分析结果一致。含沙水流进入梭锥管后,其内设置的多层锥圈把泥沙沉降区域分割成若干个沉降距离较短且相互独立的沉降空间,缩短了泥沙的自由沉降距离。相邻锥圈组成的水沙分离空间内,形成了沿锥圈上表面向下运动的泥沙流和沿锥圈下表面向上运动的清水流,使分离后的泥沙流和清水流沿各自独立路径流动,泥沙流流入排沙装置中心的排沙通道,而清水流流入装置边壁处的清水流通道,相互之间无混掺和干扰,加快了水沙分离速度。
Using the particle image velocimetry technique, the velocity field of two-phase flow in sediment transport in two types of operating conditions was tested, and the velocity vector distribution of sediment movement in the shuttle tube was given And the size of the cloud map. The analysis of test results shows that the measured results are consistent with the theoretical analysis. After the sandy water flows into the shuttle cone, the multi-layer conical ring set therein divides the sedimentation area into several settlement spaces with short settling distances and independent of each other, thereby shortening the free settling distance of sediment. In the separation space of water and sediment composed of adjacent cones, a sediment flow which moves downward along the upper surface of the conical ring and a fresh water flow which moves upwards along the lower surface of the conical ring are formed, so that the separated sediment flow and fresh water flow flow along each The independent path flows and sediment flows into the sediment discharge channel in the center of the sediment discharge device. However, the fresh water flows into the fresh water flow channel at the side wall of the device without mixing and interference with each other, speeding up the separation of water and sediment.