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Fan blade wake flow wind field characteristic measurement system and method

A technology of fan blade and characteristic quantity, which is applied in the field of fan blade wake wind field characteristic measurement system, can solve the problems of high cost, lack of widespread application, and difficulty in fan wake wind field characteristics.

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  • Abstract
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Problems solved by technology

However, it is still very difficult to accurately measure the wind field characteristics of the wind turbine wake due to the scale relationship of the actual wind turbine wake flow field and the limitation of testing methods in the field measurement.
The existing technology uses sodar and lidar to measure the wake characteristics of wind turbines, but their cost is very expensive and they are not widely used
At present, the most widely used method is to place a wind measuring tower behind the wind turbine to measure the wake characteristics. However, due to cost constraints, only limited wake positions can be measured, and it is difficult to obtain flow field information in all directions.

Method used

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  • Fan blade wake flow wind field characteristic measurement system and method
  • Fan blade wake flow wind field characteristic measurement system and method
  • Fan blade wake flow wind field characteristic measurement system and method

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Embodiment Construction

[0045] like figure 1 As shown, it includes a traction module and a measurement module. The traction module includes a load-bearing drone 3 (traction device), a lock 4, a high-strength string 5 (traction rope), a cable tie 8 and an anchor frame 11. The amount The measuring module includes an Owen probe 6, a pressure measuring tube 7, an accelerometer 9, a scanning valve 10, an acquisition host 13 and a computer 14. The mobile anchoring frame 11 is set on the ground 12 in the wake area of ​​the wind turbine 2, and the high-strength string 5 is connected to the anchoring frame 11 through a lock 4 at one end, and the other end is connected to the load-bearing drone 3, and is pulled to the wind turbine by the load-bearing drone 3 top height. The accelerometer 9 is installed in the middle of the high-strength string 5, and the Owen probe 6 is evenly fixed on the high-strength string 5, and is connected with the scanning valve 10 fixed on the anchor frame 11 (a mobile bracket) throu...

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Abstract

The invention discloses a fan blade wake flow wind field characteristic measurement system and method, and the system comprises a traction device which is disposed at a position N times the height of a fan and is located in a fan wake flow region; a traction rope, wherein one end of the traction rope is connected with the traction device, and the other end is fixedly connected with the ground; a plurality of wind speed acquisition devices which are arranged on the traction rope along the height direction of the traction rope; and an accelerometer which is mounted on the traction rope. According to the invention, the real-time wind speed of the measuring points at different heights can be measured synchronously, and the measuring positions can be switched conveniently and quickly, so that the wind field distribution of the wake flow area of the fan can be obtained accurately and efficiently.

Description

technical field [0001] The invention relates to the technical field of wind field characteristic measurement, in particular to a system and method for measuring the wind field characteristic of the wake of a fan blade. Background technique [0002] The wake effect of the wind turbine has a serious impact on the performance of the downstream wind turbine. In order to reduce the output power loss of the downstream wind turbine and increase the life of the wind turbine, it is very necessary and urgent to carry out the research on the characteristics of the wind field of the wind turbine wake. However, due to the scale relationship of the actual wind turbine wake flow field and the limitation of testing methods, it is still very difficult to accurately measure the wind field characteristics of the wind turbine wake. In the prior art, sodar and lidar are used to measure the wake characteristics of wind turbines, but their cost is very expensive and they are not widely used. At p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/06G01M9/08G01M9/04
CPCG01M9/06G01M9/065G01M9/08G01M9/04
Inventor 沈炼韩艳唐春朝杨瑛孙昱胡朋匡希龙雷旭张学文
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