Wind turbine blade, detection device and method
A technology for a wind turbine and a detection device, which is applied in the monitoring of wind turbines, wind turbines, motors, etc., can solve the problems of temperature sensitivity of strain gauges, influence monitoring results, and difficulty in implementation, so as to improve reliability and facilitate blade aerodynamics. Effect
Active Publication Date: 2022-01-25
SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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Problems solved by technology
Whether the sensor is installed on the tower or installed under the cabin, the sensor must be exposed to the outside. When there are some extreme weather, such as heavy rain, snow, icing, frost and other severe weather, it may affect the Monitoring results
[0004] The second route is to monitor the real-time deformation of the blade in all directions. This route is more difficult to implement. There is a method to install strain gauges on multiple sections of the blade, and then calculate the real-time deformation of the blade through integration. However, the deformation structure of the blade is very complicated. , the results measured by the strain gauges are difficult to identify whether the measured strain is caused by the deformation in the waving direction or the deformation in the swinging direction, and the strain gauges are sensitive to temperature. Even if temperature compensation is used, it is difficult to completely eliminate the influence of temperature. The error of the blade strain monitored by this scheme will be relatively large, and the reliability of the monitoring results is low
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[0062] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.
[0063] The terminology used in the present invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein and in the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as use...
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The invention provides a blade of a wind power generating set, a detection device and a method. The detection device is used to detect the deformation information of the cross-section of the blade of the wind power generating set along the span direction. The rangefinder is installed near the blade root of the blade, and each rangefinder emits measuring light in the same specific direction, and the measuring light is incident into the cavity formed by the web of the blade and the main beam; the control unit is electrically connected to each rangefinder; The measuring rays of specific directions emitted by each range finder are parallel to the span direction of the blade, and when the blade is not deformed, the measuring rays of each specific direction are parallel to the web and are all irradiated on the main beam of the suction surface of the blade; When rotating, the control unit is used to determine the deformation information of the blade section where the current irradiation position of the measuring light of each range finder is located according to the distance information detected by each range finder.
Description
technical field [0001] The invention relates to the field of wind power generators, in particular to a blade, a detection device and a method of a wind power generator. Background technique [0002] As blades become larger and larger, blade deformation has become a key factor in blade design. However, blade deformation can only depend on software theoretical calculation results. It is impossible to know what the deformation will be during the actual operation of the wind field. There is no way to verify the design scheme. An important part of verification. Real-time monitoring of blade deformation of wind turbines is still a major difficulty. There is no mature and effective method for real-time and comprehensive monitoring of blade deformation. Therefore, real-time monitoring of blade deformation has become an important technology that needs to be broken through. [0003] At present, there are two strategies in the industry to monitor blade deformation. The first strategy ...
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IPC IPC(8): F03D17/00
CPCF03D17/00
Inventor郭辉缪骏朱志权潘祖金归佳寅
OwnerSHANGHAI ELECTRIC WIND POWER GRP CO LTD