Steel-mixed tower system and method for improving aerodynamic performance of wind turbine

• Main Authors: XU LU, YU WEI, KE SHITANG, DU LINGYUN, ZHU PENG, WANG HAO, YU WENLIN, WANG XIAOHAI
• Format: Patent
• Language: Chinese; English
• Published: 08.09.2017
• Subjects: BLASTING; CALCULATING; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; INDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THANNON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS,TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTIONPRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY; INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MECHANICAL ENGINEERING; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PHYSICS; PRODUCING MECHANICAL POWER; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS; WIND MOTORS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

The invention relates to a steel-mixed tower system and method for improving aerodynamic performance of a wind turbine. A tower is formed by combining a truss and a concrete tower tube. The upper portion of the tower is of a quadrangular prism structure formed by the truss, and the lower portion of the tower is of a circular table type concrete structure. The quadrangular prism structure of the truss and steel bars in concrete are connected at the joint of the quadrangular prism structure of the truss and the lower circular table type concrete structure in a welded manner. The joint of the upper portion of the truss and a cabin is fixed through a suction cup welded to the bottom of the cabin. The perpendicular length of the quadrangular prism structure of the truss is larger than the length of blades by 5 m to 10 m. The aerodynamic performance of the steel-mixed tower system is simulated through a computational fluid dynamics method and compared with un-optimized aerodynamic force data of a tower structure, a