泵作透平专用叶轮直径的确定及其对透平性能的影响

被引：5

作者：

王桃 ^{[1
,2
]}

孔繁余 ^{[1
]}

杨孙圣 ^{[1
]}

陈凯 ^{[1
]}

苟秋琴 ^{[3
]}

机构：

[1] 江苏大学流体机械工程技术研究中心

[2] 西华大学能源与动力工程学院

[3] 西华大学流体及动力机械教育部重点实验室

来源：

农业工程学报 | 2016年 / 32卷 / 15期

关键词：

泵; 叶轮; 模型; 离心泵作透平; 前弯叶片; 速度矩; 蜗壳常数;

D O I：

暂无

中图分类号：

TH311 [离心泵];

学科分类号：

080704 ;

摘要：

为了以理论方法建立前弯叶片泵作透平专用叶轮直径与设计流量的关系,揭示叶轮直径对透平性能的影响,该文以比转速为66的离心泵为原型,推导叶轮直径与设计流量的关系表达式。在不改变原型泵其他过流部件的前提下,基于ANSYS Bladegen软件设计3个进口安放角均为90°,直径分别为235、245和255 mm的前弯叶片透平专用叶轮。在试验验证基础上,分别完成3台透平全流场数值计算。结果表明:叶轮直径对透平外特性有显著影响,高效点随叶轮直径增加向大流量偏移。最高效率点均出现在计算临界流量稍偏右侧,与理论推导结论基本相符。叶轮直径从235 mm增大到245和255 mm时,透平最高效率分别提高了1.73%和3.32%。随叶轮直径增大,小流量区效率下降且降速快,大流量区效率提高且高效区宽。该研究丰富了液力透平设计方法,可为前弯叶片透平专用叶轮设计提供参考。

引用

页码：60 / 66

页数：7

共 22 条

[1]

离心泵作透平的理论分析数值计算与实验研究.[D].杨孙圣.江苏大学.2012, 03

[2]

Effects of impeller diameter and rotational speed on performance of pump running in turbine mode.[J].Sanjay V. Jain;Abhishek Swarnkar;Karan H. Motwani;Rajesh N. Patel.Energy Conversion and Management.2015,

[3]

Design and performance evaluation of a pump-as-turbine micro-hydro test facility with incorporated inlet flow control.[J].D.R. Giosio;A.D. Henderson;J.M. Walker;P.A. Brandner;J.E. Sargison;P. Gautam.Renewable Energy.2015,

[4]

Investigations on pump running in turbine mode: A review of the state-of-the-art.[J].Sanjay V. Jain;Rajesh N. Patel.Renewable and Sustainable Energy Reviews.2014,

[5]

Theoretical; numerical and experimental prediction of pump as turbine performance.[J].Sun-Sheng Yang;Shahram Derakhshan;Fan-Yu Kong.Renewable Energy.2012,

[6]

Experimental Investigation of Centrifugal Pump Working as Turbine for Small Hydropower Systems.[J].Himanshu Nautiyal;Varun Varun;Anoop Kumar;Sanjay Yadav Sanjay Yadav.Energy Science and Technology.2011, 1

[7] Reverse running pumps analytical, experimental and computational study: A review [J].

Nautiyal, Himanshu ;

Varun ;

Kumar, Anoop .

RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2010, 14 (07) :2059-2067

[8] The comparison of incomplete sensitivities and Genetic algorithms applications in 3D radial turbomachinery blade optimization [J].

Derakhshan, Shahram ;

Mohammadi, Bijan ;

Nourbakhsh, Ahmad .

COMPUTERS & FLUIDS, 2010, 39 (10) :2022-2029

[9]

Internal hydraulic analysis of impeller rounding in centrifugal pumps as turbines.[J].Punit Singh;Franz Nestmann.Experimental Thermal and Fluid Science.2010, 1

[10]

Pico hydro – Reducing technical risks for rural electrification.[J].A.A. Williams;R. Simpson.Renewable Energy.2009, 8

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