A paddle association method for variable speed operation of a rotary paddle turbine
A type of hydraulic turbine and variable speed technology, applied in mechanical equipment, hydropower, engine components, etc., can solve the problems of large measurement volume, complex interpolation, low reliability and precision, etc., and achieve small measurement volume, simple operation, and high reliability high effect
Active Publication Date: 2021-05-25
XIAN UNIV OF TECH
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Problems solved by technology
[0003] The purpose of the present invention is to provide a blade association method for variable speed operation of a rotary paddle water turbine, which solves the problem of excessive measurement and interpolation in the prior art when the association method at constant speed is applied to variable speed operation. Problems of complexity, low reliability and low precision
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[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0019] The invention relates to a paddle association method for variable speed operation of a paddle type water turbine. Firstly, according to the comprehensive characteristic curve of the paddle type water turbine, the unit output curves of each operating point are drawn, and then according to the equal unit output curves, the paddle type water turbine is drawn with variable speed. Run the optimal characteristic curve, and finally read the guide vane opening α and blade opening at each working point on the optimal characteristic curve of the rotary paddle turbine running at variable speed That is, the paddle association relationship of the rotary paddle turbine running at variable speed.
[0020] Specifically follow the steps below:
[0021] Step 1, according to the unit flow Q 11 is the abscissa, unit speed n 11 is the unit flow rate Q ...
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The invention discloses a paddle association method for variable speed operation of a rotary paddle water turbine. Firstly, the unit output curves of each operating point are drawn according to the comprehensive characteristic curve of the rotary paddle water turbine, and then the variable speed of the rotary paddle water turbine is drawn according to the equal unit output curves. Finally, read the guide vane opening α and the blade opening of each working condition point on the optimal characteristic curve of the variable speed operation of the rotary paddle turbine, which is the blade coordination of the variable speed operation of the rotary paddle turbine. association relationship. The invention solves the problems of large amount of measurement, complex interpolation, low reliability and low precision in the prior art when the association method at constant speed is applied to the operation at variable speed.
Description
technical field [0001] The invention belongs to the technical field of water turbine adjustment methods, and in particular relates to a paddle association method for variable speed operation of a paddle type water turbine. Background technique [0002] Rotary paddle turbines usually operate at a constant synchronous speed. In order to improve operating efficiency, the blade opening is associated with the guide vane opening and water head. During operation, the governor is based on the measured water head and guide vane opening. Two-dimensional interpolation calculation is carried out on the linkage relationship embedded in the governor to obtain the blade opening. At present, there are no reports on the variable speed operation of the rotary paddle turbine and how to establish the association relationship during the variable speed operation. There is a measurement problem in applying the paddle association method of the constant speed operation of the rotary paddle turbine t...
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IPC IPC(8): F03B15/08
CPCF03B15/08Y02E10/20
Inventor 门闯社南海鹏李国凤张松松罗兴锜冯建军
Owner XIAN UNIV OF TECH