针对带电更换特高压直线塔绝缘子串六线提线钩重量大,导致作业人员劳动强度大、危险系数高、工作效率低的问题,通过结构优化、碳纤维预浸料铺层工艺设计以及固化工艺探索,设计研制碳纤维六线提线钩。通过力学仿真对提线钩上主体和副钩...针对带电更换特高压直线塔绝缘子串六线提线钩重量大,导致作业人员劳动强度大、危险系数高、工作效率低的问题,通过结构优化、碳纤维预浸料铺层工艺设计以及固化工艺探索,设计研制碳纤维六线提线钩。通过力学仿真对提线钩上主体和副钩分别进行受力特性分析,计算发现提线钩上主体受力薄弱部位位于顶端螺栓连接孔处,当施加3倍额定荷载(240 k N)时,最大变形位移为0.51 mm,最大应力为1.9×10~8 Pa;副钩受力薄弱部位位于副钩螺栓连接处,当施加3倍额定荷载(40 k N)时,最大位移为0.91 mm,最大应力为1.7×10~8 Pa。经力学试验测试,该提线钩最大破坏力为260 k N,满足240 k N的设计要求。碳纤维六线提线钩的成功研制,为碳纤维复合材料在特高压带电作业中的应用奠定基础。展开更多
An Autler-Townes（AT） spectroscopy based on phase conjugate six-wave mixing（SWM） is proposed to detect AT doublet of high-lying state in a Doppler-broadened cascade four-level system.It is found that the SWM spectr...An Autler-Townes（AT） spectroscopy based on phase conjugate six-wave mixing（SWM） is proposed to detect AT doublet of high-lying state in a Doppler-broadened cascade four-level system.It is found that the SWM spectrum is dependent strongly on the ratios between the magnitudes of the wave vectors.We discuss how the Doppler broadening affects the SWM spectrum from a time-domain viewpoint and find that,due the atomic motion,the atomic polarizations acquire different phases for atoms with different velocities as time evolves.The Doppler free SWM spectrum can be obtained only when the atomic polarization can be rephasing again at certain time after the interactions of all the incident fields.展开更多
基金Supported by The National Natural Science Foundation of China(No.60807014)the Natural Science Foundation of Jiangxi Province,China(No.2009GZW0005)the Research Foundation of State Key Laboratory of Advanced Optical Communication Systems and Networks,and the Research Foundation of the Education Depart ment of Jiangxi Province,China(No.GJJ09153)
文摘针对带电更换特高压直线塔绝缘子串六线提线钩重量大,导致作业人员劳动强度大、危险系数高、工作效率低的问题,通过结构优化、碳纤维预浸料铺层工艺设计以及固化工艺探索,设计研制碳纤维六线提线钩。通过力学仿真对提线钩上主体和副钩分别进行受力特性分析,计算发现提线钩上主体受力薄弱部位位于顶端螺栓连接孔处,当施加3倍额定荷载(240 k N)时,最大变形位移为0.51 mm,最大应力为1.9×10~8 Pa;副钩受力薄弱部位位于副钩螺栓连接处,当施加3倍额定荷载(40 k N)时,最大位移为0.91 mm,最大应力为1.7×10~8 Pa。经力学试验测试,该提线钩最大破坏力为260 k N,满足240 k N的设计要求。碳纤维六线提线钩的成功研制,为碳纤维复合材料在特高压带电作业中的应用奠定基础。
基金National Natural Science Foundation of China(1086407)Xinjiang Normal University Graduate Student Innovation Fund Projects of China(20121215)the Key Discipline of Theoretical Physics Graduate Innovation Fund of Xinjiang, China(LLWLY201111)
基金Project supported by the National Basic Research Program of China(Grant No.2013CB922002)the National Natural Science Foundation of China(Grant Nos.11274376 and 61308011)the National High Technology Research and Development Program of China(Grant No.2011AA120102)
文摘An Autler-Townes（AT） spectroscopy based on phase conjugate six-wave mixing（SWM） is proposed to detect AT doublet of high-lying state in a Doppler-broadened cascade four-level system.It is found that the SWM spectrum is dependent strongly on the ratios between the magnitudes of the wave vectors.We discuss how the Doppler broadening affects the SWM spectrum from a time-domain viewpoint and find that,due the atomic motion,the atomic polarizations acquire different phases for atoms with different velocities as time evolves.The Doppler free SWM spectrum can be obtained only when the atomic polarization can be rephasing again at certain time after the interactions of all the incident fields.
