Experimental Study on Removal of Water Film from Steam Turbine Stator Blade Surfaces by Suction Slots

您当前的位置：

首页 >

文章列表页 >

Experimental Study on Removal of Water Film from Steam Turbine Stator Blade Surfaces by Suction Slots

更新时间：2025-05-08

- Experimental Study on Removal of Water Film from Steam Turbine Stator Blade Surfaces by Suction Slots
- Vol. 43, Issue 1, Pages: 20-23+33(2009)
- 作者机构：
  
  西安交通大学叶轮机械研究所,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK261
- Online First：10 January 2009，
  
  Published：2009
- 稿件说明：
移动端阅览
Experimental Study on Removal of Water Film from Steam Turbine Stator Blade Surfaces by Suction Slots[J]. 2009, 43(1): 20-23+33.
DOI：

Experimental Study on Removal of Water Film from Steam Turbine Stator Blade Surfaces by Suction Slots[J]. 2009, 43(1): 20-23+33. DOI：

摘要

在气液两相流试验装置上

对汽轮机空心静叶表面水膜缝隙抽吸进行了试验研究

并结合两相流动数值方法对水滴沉积的径向分布进行了探讨.试验条件为:叶栅进口空气湿度为7%

水滴直径分布在1.5～201 μm之间

抽吸缝隙宽度为1 mm

缝隙角度为45°.研究结果表明:吸力面上的抽吸缝在相对弧长约为0.5处具有最大的抽水效率

而压力面的抽吸缝隙越靠近尾缘处抽水效率越高

且压力面的缝隙抽水性能比吸力面的好

增加气流速度会引起抽水效率降低

增大缝隙抽吸压差可以提高抽水效率.另外

抽水效率沿着叶高方向是增加的.

Abstract

An experiment on the performance of water film removal from hollow stator blade surfaces of a steam turbine by slot suction was conducted on an air-water two-phase flow rig with an inlet air wetness of 7%

a droplet diameter range of 1.5-201 μm

a slot width of 1 mm and a slot angle of 45° to the blade surface. The investigation into the radial characteristic of the droplet deposition on the blade surface was also performed with the two-phase flow numerical simulation method based on the experiment data. The results show that a maximum water removal rate was obtained at a relative arc length of about 0.5 for the suction slot on the suction side

and for the suction slot on the pressure side the higher water removal efficiency was observed when the slot was nearer to the blade trailing edge. The water removal efficiency of the blade surfaces was greater for the suction slot on the pressure side than that on the suction side. Increasing airflow velocity resulted in the decrease of water removal efficiency

and larger suction pressure difference leaded to higher water removal efficiency. In addition

the water removal efficiency exhibited an increase in the radial direction of the blade.

关键词

Keywords

references

DEHOUVE J, NARDIN P, ZEGHMATI M. Erosion study of final stage blading of low pressure steam turbines [J]. Applied Surface Science, 1999, 144(3):238-243.

ALEXANDER S. Wet-steam turbines for nuclear power plants [M]. Tulsa, USA: Penn Well Corporation, 2005:191-216.

RYLEY D J, AI-AZZAWI H K. Suppression of the deposition of nucleated fog droplets on steam turbine stator blades by blade heating [J]. International Journal of Heat and Fluid Flow, 1983, 4(4):207-216.

SMITH A, CALDWELL J, CHRISTIE D G,et al. Physical aspects of blade erosion by wet steam in turbines and discussion [J]. Philosophical Transactions of the Royal Society of London:Mathematical and Physical Sciences, 1966, 260(1110):209-219.

王新军,卢澄,李振光,等.缝隙吹扫对静叶出口二次水滴直径影响的试验研究[J]. 西安交通大学学报, 2007, 41(7): 764-767.

WANG Xinjun, LU Cheng,LI Zhenguang, et al. Experimental study on effects of slot hot gas blowing on secondary water droplet diameter downstream of the stationary blade [J]. Journal of Xi'an Jiaotong University, 2007, 41(7): 764-767.

RELEY D J, PARKER G J. The removal of water from low-pressure steam turbine blades by trailing-edge suction slots [J]. Proceeding of Institute Mechanical Engineers,1970, 182(3):94-103.

TANUMA T. The removal of water from steam turbine stationary blades by suction slots [C]∥Proc Inst Mech Eng. London, UK: IMechE, 1991:179-189.

王新军,高铁瑜,徐廷相.缝隙抽吸对二次水滴直径及直径分布影响的试验研究[J]. 汽轮机技术, 2004, 46(6): 444-450.

WANG Xinjun, GAO Tieyu, XU Tingxiang. Experimental study on effects of suction on secondary water droplet diameter and its distribution [J]. Turbine Technology, 2004,46(6):444-450.

WANG Xinjun, XU Tingxiang, LI Yanfeng. Effects of water suction on water film tearing at trailing [J]. Heat Transfer: Asian Research, 2005, 34(6): 380-385.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Numerical Simulation of Unsteady Flow Phenomena and Excitation Force in Control Stage of Steam Turbine

Influence of Axial Clearance on Movement Characteristic and Deposition of Secondary Droplets

Numerical Investigation on Flow Characteristics in Steam Turbine Low Pressure Cylinder and LPEH under Different Volume Flow Rate Conditions

Quantitative Evaluation of Wetness Losses in Steam Turbine

Steam Turbine Rotor Thermal Stress Calculation with Thermo-Structural Coupled Model

Related Author

吴其林 2

曹守洪 2

谢永慧 1

张荻 1

屈焕成 1

潘家成 1

徐亮 1

Related Institution

School of Energy and Power Engineering, Xi'an Jiaotong University

State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University

Dongfang Steam Turbine Co. Ltd.

Institute of Turbomachinary, Xi'an Jiaotong University

State Key Lab for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University

⁰