US 12,234,804 B2
Clearance monitoring system of wind turbine set, and monitoring method and device
Xinle Li, Beijing (CN); and Qi Zhang, Beijing (CN)
Assigned to BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT CO., LTD., Beijing (CN)
Appl. No. 17/996,488
Filed by BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT CO., LTD., Beijing (CN)
PCT Filed Mar. 31, 2021, PCT No. PCT/CN2021/084212
§ 371(c)(1), (2) Date Oct. 18, 2022,
PCT Pub. No. WO2021/218541, PCT Pub. Date Oct. 4, 2021.
Claims priority of application No. 202010364452.3 (CN), filed on Apr. 30, 2020.
Prior Publication US 2023/0204014 A1, Jun. 29, 2023
Int. Cl. F03D 17/00 (2016.01); F03D 80/00 (2016.01); F03D 80/80 (2016.01)
CPC F03D 17/00 (2016.05) [F03D 80/00 (2016.05); F03D 80/82 (2016.05); F05B 2270/33 (2013.01); F05B 2270/805 (2013.01); Y02E 10/72 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A clearance monitoring system for a wind turbine, comprising:
a processor and a millimeter-wave radar communicatively connected to the processor, wherein
a nacelle of the wind turbine has a nacelle casing extending along a central axis of an impeller of the wind turbine, the nacelle casing comprises a nacelle bottom wall close to a tower of the wind turbine, a nacelle top wall away from the tower and a nacelle side wall connecting the nacelle bottom wall and the nacelle top wall, wherein the millimeter-wave radar is configured to be mounted on the nacelle side wall close to the nacelle top wall, and be located on a left side portion, viewed in a direction from the nacelle toward the impeller, of an outer side of the nacelle of the wind turbine, a detection direction of the millimeter-wave radar is directed to a lower left of a motion area where the impeller rotates around the central axis thereof, and the millimeter-wave radar is configured to monitor motion data of each blade in the motion area; and
the processor is configured to determine, based on the motion data, a blade clearance between each of the blades and the tower of the wind turbine.