不同压水室的圆盘泵非定常特性及内部流动机理研究  

Research on Unsteady Characteristics and Inflow Mechanism of Different Pumping Chamber of Disc Pump

作　　者：王川[1] 张渤晗 裴迎举 王东波 WANG Chuan;ZHANG Bo-han;PEI Ying-ju;WANG Dong-bo(College of Mechatronic Engineering,Southwest Petroleum University,Chengdu,China,Post Code:610500;Petroleum Engineering School,Southwest Petroleum University,Chengdu,China,Post Code:610500)

机构地区：[1]西南石油大学机电工程学院,四川成都610500 [2]西南石油大学石油与天然气工程学院,四川成都610500

出　　处：《热能动力工程》2021年第5期17-22,共6页Journal of Engineering for Thermal Energy and Power

基　　金：国家重点研发计划(2018YFC0310200);国家自然科学基金(51704254);四川省重大科技专项(2019ZDZX0030);成都市科技局国际合作自主项目(2019-GH02-00039-HZ)。

摘　　要：针对圆盘泵的非连续叶片特殊叶轮结构,压水室的匹配设计对其整体水力特性提升具有重要意义。基于现场试验和CFX仿真分析结果,验证了湍流模型非定常仿真的可靠性。依据压水室结构参数理论分析结果,选取6种不同过流断面面积的压水室进行数值模拟和多维度内部流场分析,结果表明:随着过流断面面积的增加,6种不同压水室方案的叶轮中心呈现低压区,压力沿径向先增加后减小最后趋于相对稳定;高压区呈中心对称分布,主要位于叶轮和压水室交界并靠近叶轮出口一侧处,最大压力区域出现在压水室出口的近端位置;压水室过流面积越小,叶轮出口处漩涡越为明显,漩涡沿圆周扩散严重,随着压水室过流面积的增加,漩涡明显减弱,过流面积过大,漩涡明显加强。In connection with the special impeller structure of discontinuous vane for disc pump, the matching design of the pumping chamber is important to the improvement of its overall hydraulic characteristics.Based on the results of field test and CFX simulation analysis, the reliability of unsteady simulation of turbulence model is verified.According to the theoretical analysis results of the structural parameters of the pumping chamber, six pumping chambers with different cross-sectional areas were selected for numerical simulation and multi-dimensional internal flow analysis.The results show that with the increase of the cross-sectional area, the impeller center of the six different pumping chamber schemes presents a low-pressure zone.After the pressure increases along the radial direction and decreases, it tends to be relatively stable, and the high-pressure area is symmetrically distributed in the center.The high-pressure area is mainly located at the junction of the impeller and the pumping chamber and close to the side of the impeller outlet.The maximum pressure area appears near the outlet of the pumping chamber.As the flow area of the pumping chamber decreases, the vortex at the outlet of the impeller becomes more evident, and the vortex diffuses seriously along the circumference.With the increase of the flow area of the pumping chamber, the vortex is clearly weakened, the flow area is too large and the vortex appears noticeably.

关 键 词：圆盘泵 压水室 非定常模拟 水力特性 无叶区 

分 类 号：TK05[动力工程及工程热物理]