摘要
大型低速风洞动力源采用直径为12米的单级风扇,由于采用风扇直接安装在电机轴上的直挂连接形式,并且要求风扇启动速度快,因此对风扇重量和转动惯量要求极高。综合考虑以上因素,桨叶材料选取碳纤维复合材料,该材料具有比强度好、比刚度高等综合优势。风扇轮毂采用低合金高强度结构钢Q345材料的焊接结构,具有综合性能优异、加工成本低等优势。风扇设计过程中通过有限元分析方法对风扇刚强度及模态进行分析,风扇加工过程中,通过试验手段对计算结果进行了验证。最后通过转速试验证明,采用复合材料桨叶的风扇可以达到设计转速,并且长期可靠运行,风洞流场品质优良。
The power source of large-scale low-speed wind tunnel adopts a single-stage fan with a diameter of 12 meters.Because the fan is directly mounted on the motor shaft,and the starting speed of the fan is required to be fast,the weight and moment of inertia of the fan are extremely high.Considering the above factors,carbon fiber composite is selected as the blade material,which has comprehensive advantages such as good specific strength and high specific stiffness.The fan hub is welded with low-alloy high-strength structural steel Q345,which has the advantages of excellent comprehensive performance and low processing costs.In the process of fan design,the stiffness and mode of the fan are analyzed by finite element analysis,and in the process of fan processing,the calculation results are verified by experiments.Finally,through the speed test,it is proved that the fan with composite blades can reach the design speed and run reliably for a long time,and the flow field in the wind tunnel is of excellent quality.
作者
石琦
王霞
Shi Qi;Wang Xia(Hefei College of Finance and Economics,Hefei,Anhui 230601,China;College of Physics,Qingdao University,Qingdao,Shandong 266071,China)
出处
《黑龙江工业学院学报(综合版)》
2025年第11期144-150,共7页
Journal of Heilongjiang University of Technology(Comprehensive Edition)
基金
安徽省高等学校自然科学研究重点研究项目“基于机器学习的零部件表面缺陷识别训练与实验研究”(项目编号:2024AH051794)
安徽省高等学校省级质量工程项目“机电一体化技术服务十大新兴产业特色专业”(项目编号:2023sdxx307)
山东省自然科学基金面上项目“高性能多酸基金属硫化物复合柔性电极构筑及储钠机制研究”(项目编号:ZR2022ME171)。
关键词
大型航空风洞
复合材料桨叶
风扇
有限元分析
试验验证
large aviation wind tunnel
composite blades
fan
finite element analysis
experimental verification
