| 立式曲面V型网板在拖网系统中的力学配合计算研究 |
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| 引用本文： | 饶欣,黄洪亮,刘健,叶纯杰,李灵智,杨嘉樑,陈帅.立式曲面V型网板在拖网系统中的力学配合计算研究[J].水产学报,2015,39(2):284-293. |
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| 作者姓名： | 饶欣 黄洪亮 刘健 叶纯杰 李灵智 杨嘉樑 陈帅 |
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| 作者单位： | 中国水产科学研究院东海水产研究所,中国水产科学研究院东海水产研究所 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项资金资助（2014T01），国家863计划项目（2012AA092301），公交性行业（农业）科研专项（201203018） |
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| 摘 要： | 为获知网板对拖网系统力学配合计算的影响，本文运用网板平衡方程结合钢索张力方程，建立拖网系统力学配合计算模型，并选取一款广泛使用的立式曲面V型网板及其相应的中层拖网，将网板水动力性能水槽实验数据，结合“龙腾”号的拖网及拖船实测数据带入力学模型，从翼端处的张力起始，逐步计算及分析手纲、网板、曳纲的受力情况，得到网板工作冲角、曳纲长度及张力、拖网翼端深度等拖网系统参数值。对网板各参数对拖网系统的影响进行了分析讨论，分析证明:冲角、曳纲长度和翼端深度随拖曳速度增加而减小；翼端深度及曳纲张力随曳纲连接点Z坐标的增加呈指数增长，随手纲连接点Z坐标增加呈线性减小;通过调节曳纲连接点Z坐标在0.1m-0.6m范围内，可控制工作冲角在17.77°-18.55°之间，翼端深度在124.3m-192.3m之间，曳纲张力在40210N-42219N之间变化；通过调节手纲连接点Z坐标在-0.4m--0.05m范围内，可控制工作冲角在16.54°-19.85°之间，翼端深度在75.9m-679.5m之间，曳纲张力在39533.5N-57933N之间变化；减少网板在水中质量，可减小拖船功率负荷，更适合在浅层作业；减小网板面积，可降低网板工作冲角，同时减小拖船功率负荷，更适合在稍深的水层作业。本文总结了网板参数的配合计算规律并建立了估算公式，为网板的合理使用和进一步开发提供参考依据。
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| 关 键 词： | 立式曲面V型网板 拖网系统 配合计算 |
| 收稿时间： | 2014/6/24 0:00:00 |
| 修稿时间： | 2014/10/31 0:00:00 |
Studies on mechanical matching calculation of vertical cambered V type otter board in trawl system |
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| RAO Xin,HUANG Hongliang,LIU Jian,YE Chunjie,LI Lingzhi,YANG Jialiang and CHEN Shuai.Studies on mechanical matching calculation of vertical cambered V type otter board in trawl system[J].Journal of Fisheries of China,2015,39(2):284-293. |
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| Authors: | RAO Xin HUANG Hongliang LIU Jian YE Chunjie LI Lingzhi YANG Jialiang and CHEN Shuai |
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| Institution: | East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences,East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences |
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| Abstract: | In this paper, for obtaining the influence of otter board on the mechanical trawl system matching calculation, trawl system mechanical matching calculation model was established based on the equilibrium equation of otter board and tension equation of wire rope, a widely used cambered V type otter board was selected, the hydrodynamic performance experiment data, combining with the data of 'Longteng' vessel and four patch and big mesh size mid water trawl experiment results were taken into the model, calculation and analysis was conducted from the tension of trawl wing tip, to the sweep line, otter board, wrap step by step, the attack angle, warp tension, warp length, net depth and other trawl system parameters value were obtained.The influences of otter board parameters on trawl system operation and force situation was analyzed, and it was proved that:Attack angle decreases with the increase of the drag velocity;warp tension and net depth increases exponentially with the increase of Z coordinate of warp line junction, decreases linearly with the increase of Z coordinate of sweep line junction; attack angle was controlled between 17.77°-18.55°, net depth between 124.3-192.3 m, and warp tension between 40 210-42 219 N via the Z coordinate of warp line junction was adjusted between 0.1-0.6 m;attack angle was controlled between 16.54°-19.85°, net depth between 75.9-679.5 m, and warp tension between 39 533.5-57 933 N via the Z coordinate of sweep line junction was adjusted between -0.4-0.05 m;trawlers loading decreases with the decrease of otter board weight, and be more suitable for shallow operation; attack angle and trawlers loading decreases with the decrease of otter board area, and be more suitable for deep layer operation.The rules of mechanical matching calculation versus otter board parameters were summarized, and the estimation equations were obtained, and reference for correct using and further development of otter board were provided. |
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| Keywords: | vertical cambered V type otter board trawl system mechanical match calculation |
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