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Efficiency Optimization Method of Rotary Paddle Turbine with Speed ​​and Blade Opening as Variables

A blade opening and type water turbine technology, applied in design optimization/simulation, geometric CAD, etc., can solve the problem that the unit cannot be coordinated to the optimal efficiency, and achieve the effect of improving economy and efficiency

Active Publication Date: 2022-05-03
XIAN UNIV OF TECH
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for optimizing the efficiency of a paddle-type water turbine with the rotating speed and blade opening as variables, which solves the problems existing in the prior art when the paddle-type water turbine generator set operates at variable speeds. The problem that the unit cannot be coordinated to the optimal efficiency caused by the model difference

Method used

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  • Efficiency Optimization Method of Rotary Paddle Turbine with Speed ​​and Blade Opening as Variables
  • Efficiency Optimization Method of Rotary Paddle Turbine with Speed ​​and Blade Opening as Variables
  • Efficiency Optimization Method of Rotary Paddle Turbine with Speed ​​and Blade Opening as Variables

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Embodiment

[0034] When the variable speed operating condition of the rotary paddle turbine changes within a small range, the relationship between the efficiency of the unit, the speed of the unit and the opening of the blades satisfies the single-pole space surface, as shown in figure 2 shown.

[0035] Step 1. Assuming that the initial speed and blade opening of the real machine under the current water head and output of the unit are obtained from the association relationship of the rotary paddle turbine model, the corresponding initial operating point of the real machine is figure 2 Point A in .

[0036] Step 2. Adjust the blade opening of the unit while keeping the speed constant, then the operating point moves on curve 1, and curve 1 is the blade optimization curve. At this time, the relationship between efficiency and blade opening is as follows: image 3 shown. Assuming that the blade opening is changed according to a certain step at the initial moment, the blade opening of the ...

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Abstract

The invention discloses an optimization method for the efficiency of a rotary paddle water turbine with the rotational speed and blade opening as variables. The initial rotational speed and the initial blade opening of the real machine are obtained from the association relationship of the water turbine model, and on this basis, the rotational speed of the unit is changed respectively. , blade opening and judge the efficiency change of the turbine, and then get the optimal speed or blade opening. The method solves the problem that the rotary paddle water turbine cannot be coordinated to the optimal efficiency during variable speed operation, improves the variable speed operation efficiency of the rotary paddle water turbine, and increases the operation stability of the unit.

Description

technical field [0001] The invention belongs to the technical field of water turbine adjustment methods, and relates to a method for optimizing the efficiency of a paddle type water turbine with the rotation speed and blade opening as variables. Background technique [0002] When the paddle turbine is running at variable speed, the efficiency of the turbine is related to the speed of the unit and the opening of the blades at the same time under a certain water head and power. The characteristic of optimal efficiency cannot accurately reflect the operation of the real machine, resulting in the inability to coordinate to the optimal efficiency when the turbine is running at variable speed, which reduces the economical efficiency of the power station and the operational stability of the unit. Contents of the invention [0003] The purpose of the present invention is to provide a method for optimizing the efficiency of a paddle-type water turbine with the rotating speed and bl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/17
Inventor 门闯社南海鹏罗兴锜冯建军郭鹏程张松松高春阳李斐斐李国凤
Owner XIAN UNIV OF TECH
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