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螺旋离心泵

螺旋离心泵的相关文献在1982年到2022年内共计182篇,主要集中在机械、仪表工业、农业工程、能源与动力工程 等领域,其中期刊论文92篇、会议论文12篇、专利文献310149篇;相关期刊28种,包括城市建设理论研究(电子版)、兰州理工大学学报、江苏大学学报(自然科学版)等; 相关会议7种,包括西华大学能源与环境学院水力机械学科发展战略研讨会暨第七届全国水力机械及其系统学术会议、第六届全国水力机械及其系统学术会议、第四届全国水力机械及其系统学术会议等;螺旋离心泵的相关文献由265位作者贡献,包括李仁年、韩伟、权辉等。

螺旋离心泵—发文量

期刊论文>

论文:92 占比:0.03%

会议论文>

论文:12 占比:0.00%

专利文献>

论文:310149 占比:99.97%

总计:310253篇

螺旋离心泵—发文趋势图

螺旋离心泵

-研究学者

  • 李仁年
  • 韩伟
  • 权辉
  • 李琪飞
  • 丛小青
  • 周建佳
  • 袁丹青
  • 袁寿其
  • 刘成胜
  • 徐宇平
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 张翔; 胡蓓蓓; 冯一鸣; 刘轲轲; 王春林
    • 摘要: 针对螺旋离心泵运行时性能普遍偏低的问题,以某一典型螺旋离心泵为研究对象,应用计算流体动力学软件CFX对螺旋离心泵进行数值计算得到其内部流动规律.以在设计流量工况下的扬程和效率作为优化目标,采用P-B试验与多因素方差分析筛选出优化变量,采用径向基(RBF)神经网络建立优化目标与优化变量之间的预测模型,并结合差分进化(DECIMO)算法在样本空间内全局寻优.取扬程最优、效率最优和初始个体进行数值计算,对比分析泵输送不同介质(清水与固液两相流体)时的流场及其外特性差异,并进行试验验证.研究结果表明:叶片轮毂进口角β_(1b)、叶轮出口宽度b_(2)、叶轮出口直径D_(2)和叶片包角Φ是影响螺旋离心泵扬程和效率的显著因素;由RBF神经网络建立的预测模型精度较高;输送清水时,设计流量下扬程最优个体扬程为9.4 m,增长了13.5%;效率最优个体效率比初始个体提高了9.8%,优化效果显著.
    • 袁丹青; 王玉帛; 丛小青
    • 摘要: 螺旋离心泵是一种防堵塞性能优秀、高效区宽广以及功率曲线平坦的单叶片杂质泵,主要应用于食品输送、污水处理和制浆造纸领域.但目前该泵设计方法尚不成熟,较为依赖设计者的设计经验,同时传统的螺旋离心泵水力模型设计方法和绘制过程较为陈旧,这也造成该种泵设计效率普遍不高,设计成本较大.因此本文通过研究现有螺旋离心泵的设计方法,对现有经验公式进行修改,并使用CFturbo和SolidWorks相结合的方法对螺旋离心泵水力模型进行开发.该方法能够明显简化设计流程,且设计出的泵水力性能较好,数值计算显示,该方法设计的比转速为145、包角为600°的螺旋离心泵优化后设计工况点的水力效率达到73.83%,最佳工况点的水力效率达到75.95%.
    • 吴春光; 范云照
    • 摘要: 通过对螺旋离心泵的三维建模、网格划分以及进行了全流道的定常数值模拟,采用ANSYS Mechanical+CFX方法对螺旋离心泵转子部件进行多工况单向流固耦合计算,对叶轮进行应力、变形分析,利用第一强度理论对结构进行强度校核,分析了叶轮由于变形过大或者结构由于强度不足而引起失效的可能性;对转子部件进行了模态分析,分别计算了不考虑预应力情况下系统在空气中的模态分布、考虑预应力情况下系统在空气中的模态分布(干模态)以及系统在水中的模态分布(湿模态),分析了预应力以及水介质对系统模态的影响,为结构部件的优化设计提供一定的参考.
    • 吴春光; 范云照
    • 摘要: 对螺旋离心泵三维建模、计算域的边界条件定义、建立叶轮旋转坐标系、进行全流道的定常数值模拟,将输送清水介质工况的螺旋离心泵数值模拟结果进行分析,得到计算域内的速度及静压分布规律;对不同气相体积分数工况下过流部件上的气相体积分布进行研究,分析气相体积分数的变化对泵性能的影响,分析在输送气、液两相流介质工况下螺旋离心泵的内部流场特性,对流道内气相分布规律进行深入研究,为螺旋离心泵的水力设计提供参考。
    • 王俊华; 白茂宁; 盛建萍
    • 摘要: 采用双向流固耦合与非流固耦合计算对螺旋离心泵内外特性进行对比研究,分析了流固耦合作用对泵内部流场的影响.流场计算基于Reynolds时均化N-S方程和标准k-ε两方程湍流模型,采用多重坐标系法,结构响应基于弹性体结构动力学方程.两种计算结果表明,采用流固耦合计算的外特性更接近清水试验值,流固耦合作用对喉部及扩散段影响显著,在扩散段降速增压作用下,流固耦合作用对出口截面影响减弱,蜗壳水力设计时应适当考虑流固耦合作用.
    • 袁丹青; 王航; 丛小青; 季明; 张楠
    • 摘要: 为了研究流体激励力对螺旋离心泵转子系统动力学响应的影响,以一台单叶片螺旋离心泵为研究对象,利用CFX 14.5对泵的内部流场进行了非定常计算,得到了不同流量工况下叶轮所受的径向力随时间的变化情况.建立了转子系统的有限元模型,对转子的临界转速和振型进行了分析,研究了以不同流量工况下的径向力作为外部激励时,转子系统的瞬态响应.结果表明:不同流量工况下,叶轮的径向力均呈周期性变化,周期和叶轮旋转的周期相同;径向力可以分解为恒定量和脉动量,随着频率的增加,脉动峰值逐渐减小;在设计转速下,转子系统不会发生共振;当考虑径向力的作用时,叶轮上监测点处的径向位移呈现复杂的周期性变化,径向力的频率成分会在振动过程中体现出来.%To investigate the effect of fluid excitation force on the dynamic response of screw centrifugal pump rotor system,a single blade screw centrifugal pump was used as research object. The internal flow field of pump was calculated by CFX 14.5,and the variation of radial force of impeller with time under different flow conditions was obtained. The finite element model of the rotor system was established,and the critical speed and the mode of rotor were analyzed. The transient response of the rotor system was investigated when the radial force was used as external excitation under different flow conditions. The results show that the radial force of impeller is cyclical under different flow conditions,and the period is the same as that of impeller. The radial force can be decomposed into constant amount and pulsation amount,and the pulse peak is gradually decreased with the increasing of frequency. At designed speed, the rotor system does not resonate. When the effect of radial force is considered,the radial displacement at the monitoring point of impeller presents complex periodic changes,and the frequency component of radial force is reflected in the vibration process.
    • 邓育轩; 纪燕飞; 何立东; 王灵德
    • 摘要: In order to study the influence of unsteady vortex cavitation on outlet pressure in hydraulic machinery,a numerical analysis of unsteady vortex cavitation in screw centrifugal pump was presented using the computer fluid dynamic software CFD.It is found that under a certain operation condition,the pressure at the core of vortex formed by tip leakage secondary flow is lower than the ambient pressure due to the centrifugal force on the vertical flow which results in vortex cavitation if the core pressure becomes lower than the vapor pressure in screw centrifugal pump.The process of inception,development and collapse of vortex cavitation were obtained by the results as well.It is found that as the vortex cavitation occurs,the outlet pressure reduces considerably,and the outlet pressure fluctuates irregularly.%为了深入研究水力机械内部的不稳定漩涡空化对出口压力的影响进行,应用CFD软件对一台螺旋离心泵进行了数值模拟计算,发现在一定工况下,螺旋离心泵内部由经过轮缘间隙的二次流所导致的漩涡涡核低压处会发生漩涡空化,并且该漩涡空化有一个初生-发展-分离的过程,并且发生该过程时螺旋离心泵扬程出现大幅下降,出口压力也有相应的不规则波动.
    • 李仁年; 辛芳; 韩伟; 李世姗; 张国良
    • 摘要: 应用雷诺涡黏模型、DDPM(density discrete phase model,稠密离散相模型)及颗粒直径Rosin-Rammler分布方法,以黄河含沙水为介质,对一台100LN-7型螺旋离心泵内固液两相流动进行全三维数值模拟,并与基于Mixture混合多项流模型的泵内两相流动数值模拟结果进行对比分析,得到不同粒径和固相体积分数对应的泵过流部件的磨蚀规律及磨蚀强度.结果表明:颗粒混合状态不同会形成不同的粒径分布,混合粒径中平均粒径增大导致叶片进口边及工作面轮缘线附近磨蚀强度增大,平均粒径为1 mm时整台泵过流部件磨蚀率达到最大值,平均粒径继续增大磨蚀率反而降低;固相体积分数的增大使整台泵过流部件的磨蚀强度显著提高,叶片背面较其他部位磨蚀强度大;Mixture模型下固相体积分数较高部位与稠密离散相模型下颗粒磨蚀部位相对应,局部区域存在较高体积分数的固相颗粒增加了过流部件表面发生磨蚀的几率,但DDPM模型数值模拟表明只有部分颗粒参与局部区域的塑性磨蚀.%Taking the Yellow River silt-laden water as medium and using Reynolds eddy viscosity model, dense discrete phase model(DDPM), and Rosin-Rammler particle size distribution method, the full three-dimensional numerical simulation of solid-liquid two-phase flow in screw centrifugal pump was carried out and the result from Mixture model was compared with that from DDPM and analyzed.The erosion pattern and intensity of flow-passage components of pump was obtained for the case of different particle mean diameter and volume fraction.The result showed that various distribution of particle diameter might be formed due to the difference of Mixture condition and the erosion intensity at inlet edge of blade and near wheel edge line on pressure side of blade would achieve its increase with mean particle diameter of the mixture and erosion rate of all flow-passage components of the pump maximum in the case of the mean diameter being equal to one millimeter.Further increase of it would make the erosion rate decreased, instead.With the increase of solid-phase volume fraction, particle erosion intensity of all flow-passage components would rapidly grow and the key erosion position would be concentrated on suction side of blade.Higher-volume-fraction position of solid-phase in Mixture double-fluid model would correspond to particle erosion position with high-volume-fraction in dense discrete phase model.The solid-phase particles with higher volume-fraction at local zone would make the probability of erosion generation on the surface of flow-passage components increased but only a portion of particles would be involved in the plastic erosion at local zone.
    • 李仁年; 陈昊; 韩伟; 张建勋; 李雪峰
    • 摘要: With 150 ×100 LN-32 type screw centrifugal pump for the model,using the Multi-Fluid VOF mode and RNG k -εturbulence mode for the three-dimensional numeric simulation of solid-liquid two-phase flow in screw centrifugal pump.Comparing different particle size and concentration of solid-liquid two-phase flow field,analyzing the movement of solid particles in the screw centrifugal pump with a major diameter.Based on the volume-fraction of solid phase,pressure and velocity,the motion characteris-tics of large particles and liquid two phase flow in the screw centrifugal pump were obtained.Taking this as reference,the erosion of the screw centrifugal pump is analyzed.%以150×100LN -32型螺旋离心泵为模型,采用欧拉多流体、RNG k -ε模型对其内部进行三维数值模拟。对比不同颗粒粒径以及浓度情况下固液两相流场,分析了在大颗粒情况下,固体颗粒在螺旋离心泵内的运动情况。通过固相体积分数、压力以及速度分布,得出了大颗粒固液两相流在螺旋离心泵内的运动特性。并以此为参照,分析大颗粒情况下螺旋离心泵磨损情况。
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