Experimental research on flow field in the draft tube of pump turbines based on LDV

A large number of pumped storage power plants will be put into operation in China. The current development of modern pump storage power plants aims towards a higher flexibility and stability in operation, and an extended operation range of the hydraulic machine. These projects have a large number of...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2019-03, Vol.240 (7), p.72030
Main Authors: Liu, D M, Zhao, Y Z, Zuo, Z G
Format: Article
Language:English
Subjects:
Draft tubes
Experimental research
Laser doppler velocimeters
Optimization
Power plants
Pump turbines
Pumped storage
Stability
Turbines
Velocimetry
Velocity
Velocity distribution
Velocity measurement
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Summary:A large number of pumped storage power plants will be put into operation in China. The current development of modern pump storage power plants aims towards a higher flexibility and stability in operation, and an extended operation range of the hydraulic machine. These projects have a large number of problems. For problems of the turbine units, the optimization of pump turbine is very crucial to ensure the unit's high efficiency and stability. The velocity distribution on the runner outlet is very important to optimize the pump turbine. In this paper, the velocity on runner outlet was tested by LDV (Laser Doppler Velocimetry). The axial velocity and circumferential velocity on runner outlet were tested at different working points by LDV. The velocity distribution can provide important reference for the runner design.
ISSN:1755-1307
1755-1315
1755-1315
DOI:10.1088/1755-1315/240/7/072030