集波浪发电和防撞功能于一体桥梁保护装置研究
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摘要
针对常规波浪发电装置以及桥梁防撞装置的功能单一性,设计了一种集波浪发电和防撞功能于一体的新型桥梁保护装置。该装置主体外围结构为柔性防撞系统(复合材料自适应防撞套箱),波浪发电系统承载于柔性防撞系统硬件基础上。装置将吸收的波浪能通过动力输出系统转化为机械能,机械能再带动发电机发电。采用水动力学软件ANSYS-AQWA分析了水深20m、波高1m、波浪周期8s条件下装置的运动特点,并计算装置发电功率。结果表明:新型装置的垂荡运动幅值为0.5m,速度最大值为0.4m/s,加速度峰值为0.35m/s~2,波浪力最大值为1.74×10~6 N,平均发电功率为160.945kW,和现有振荡浮子式发电装置进行对比,在相同的截面面积下两者发电功率大致相同。
Either the traditional electricity-generating devices using wave energy or the ship collision protection devices can only fulfil a specified function.In this regard,a new bridge protection device capable of satisfying the requirements of both the electricity generation and ship collision protection was designed.The main peripheral structure of the device is a flexible anti-collision system(the self-adjusting anti-collision box made of composite material),on the hardware foundation of which the electricity-generating system using wave energy is placed.The device can absorb wave energy,and convert the wave energy into mechanical energy via the power take-off system,and the mechanical energy can in turn drive the alternators to generate electricity.The hydrodynamic modeling software ANSYS-AQWA was used to analyze the mechanical behavior of the device when the water depth was 20 m,the waves were 1 mhigh and the wave period last 8 s.And the power of the device was calculated.The results show that the pendulum motion amplitude of the new device is 0.5 m,and the maximum speed is 0.4 m/s,the peak acceleration is 0.35 m/s~2,and the maximum wave force is 1.74×10~6 N.However,the average electricity output is 160.945 kW.Compared with the current electricity-generating device of oscillating buoy wave energy,the output power of the two is generally the same under the condition of the same cross-section area.
Either the traditional electricity-generating devices using wave energy or the ship collision protection devices can only fulfil a specified function.In this regard,a new bridge protection device capable of satisfying the requirements of both the electricity generation and ship collision protection was designed.The main peripheral structure of the device is a flexible anti-collision system(the self-adjusting anti-collision box made of composite material),on the hardware foundation of which the electricity-generating system using wave energy is placed.The device can absorb wave energy,and convert the wave energy into mechanical energy via the power take-off system,and the mechanical energy can in turn drive the alternators to generate electricity.The hydrodynamic modeling software ANSYS-AQWA was used to analyze the mechanical behavior of the device when the water depth was 20 m,the waves were 1 mhigh and the wave period last 8 s.And the power of the device was calculated.The results show that the pendulum motion amplitude of the new device is 0.5 m,and the maximum speed is 0.4 m/s,the peak acceleration is 0.35 m/s~2,and the maximum wave force is 1.74×10~6 N.However,the average electricity output is 160.945 kW.Compared with the current electricity-generating device of oscillating buoy wave energy,the output power of the two is generally the same under the condition of the same cross-section area.
引文
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[2]贾恩实.平潭海峡公铁两用大桥元洪航道桥V形防撞梁设计[J].桥梁建设,2018,48(3):90-94.
[3]郭健,裘力奇,张胜利,等.基于柔度矩阵的跨海大桥非通航孔桥船撞损伤识别[J].桥梁建设,2017,47(6):72-77.
[4]刘剑,李国富,杨少增.新型波浪能发电装置的运动学分析[J].水资源与水工程学报,2016,27(2):174-178.
[5]曲秀全,陆念力,戴恒震.一种新型楔块式低副单向超越离合器[J].机械工程学报,2004,40(1):195-198.
[6]戴遗山,段文洋.船舶在波浪中运动的势流理论[M].北京:国防工业出版社,2008.
[7]魏凯,徐博,李义强.基于实测水压力的跨海桥梁围堰波浪力计算[J].桥梁建设,2018,48(3):50-54.
[8]林江波.浮子式海浪发电船的动态分析与仿真(硕士学位论文)[D].秦皇岛:燕山大学,2005.
[9]王卫远,何倩倩,李睿元.舟山海域波浪能资源评估[J].水力发电,2016,42(1):93-97.
[10]顾煜炯,谢典.一种振荡浮子式波浪能发电装置的实验研究[J].太阳能学报,2017,38(2):551-557.
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