公开(公告)号：US20230311059A1

公开(公告)日：2023-10-05

申请号：US18012986

申请日：2022-01-27

申请人： Jiangsu University

发明人： Lu LIU ,  Peng GONG ,  Junfeng WANG ,  Guangcai SHAO ,  Shuang WANG

IPC分类号： B01D53/32 ,  B01D53/86

CPC分类号： B01D53/32 ,  B01D53/8687 ,  B01D2259/818

摘要： The invention provides a method for monitoring health state of blade root fastener, comprising the following steps: obtaining a sequence of acceleration signals representing the lateral vibration of the nacelle and a sequence of rotational speed signals representing the rotational speed of the rotor; analyzing the sequence of acceleration signals and the sequence of rotational speed signals to determine the amplitude of the nacelle at 2-time-frequncy of the rotational speed of the rotor; and determining the health state of the blade root fastener based on the amplitude. The invention also provides a system for monitoring the health state of the blade root fastener. Through the present invention, the health state of the blade root fastener can be determined with low cost and high precision, thereby improving the operation efficiency and operation safety of the wind turbine.

公开(公告)号：US20210207499A1

公开(公告)日：2021-07-08

申请号：US16765684

申请日：2019-07-05

申请人： JIANGSU UNIVERSITY

发明人： Yongqiang FENG ,  Qian WANG ,  Zhixia HE ,  Xin WANG ,  Shuang WANG ,  Jian ZHANG ,  Guofeng LIANG

IPC分类号： F01K25/10 ,  F01K23/04 ,  F01K23/10

摘要： The present invention discloses an Organic Rankine cycle system with supercritical double-expansion two-stage heat recovery, comprising a first-stage evaporation cycle system, a second-stage evaporation cycle system and a mixing system. The present invention has lower heat loss in the heat exchange process, better heat exchange effect and improved utilization efficiency of waste heat.