大型远洋围拖网渔船吸鱼泵设计与研究
发布时间：2019-02-12 07:28
【摘要】：吸鱼泵作为围拖网渔船活鱼运输的重要部件,其质量的好坏对活鱼的影响非常巨大。为此,吸鱼泵的效率以及活鱼的损伤率一直是人们最为关心的问题。如何提高吸鱼泵的效率以及降低吸鱼泵的损伤率是各个企业追逐的重要目标。本文吸鱼泵的主要输送的对象是秋刀鱼,秋刀鱼的长度在20-35厘米左右。为了使合作单位能够更好的得到吸鱼泵的研究数据,对吸鱼泵进行结构设计以及通过数值模拟计算进行研究,在设计上:结合普通离心泵以及吸沙泵的特征,确定叶轮的结构和形式,并通过三维软件Solidworks对实际尺寸缩小十倍建模。在分析上:通过FLUENT软件对吸鱼泵进行单相流与两相流流场分析。单相流模型在空载工况时选取转速度进行数值模拟;两相流模型从四个方面进行数值模拟:1、转速;2、体积流量;3、颗粒(鱼体缩小后以颗粒描述)大小;4、颗粒的浓度。叶轮的壁面采用对称建模,并且运用柔性旋转分布,这样使得叶轮做有用功同时将流体输出到出口管。通过对吸鱼泵流场的分析,能够得到以下的结论:叶轮采用的柔性旋转分布,转速在1250rad/min-1450rad/min,流量在0.8Q-1.2Q最适合。鱼水混合物之比(鱼的体积与水的比例)在30%-50%适合活鱼输送。经合作企业试验,符合实际应用。
[Abstract]:Fish suction pump is an important part of trawler's transport of live fish, and its quality has a great influence on live fish. Therefore, the efficiency of fish suction pump and the damage rate of live fish have been the most concerned issues. How to improve the efficiency of fish suction pump and reduce the damage rate of fish suction pump is an important goal pursued by various enterprises. In this paper, the main transport object of the suction pump is the autumnal saber, the length of which is about 20-35 cm. In order to get the research data of fish suction pump better, the structure design and numerical simulation calculation of fish suction pump are studied. In the design, the characteristics of ordinary centrifugal pump and sediment suction pump are combined. The structure and form of impeller are determined, and the actual size is reduced ten times by Solidworks. The single phase flow and two phase flow field of fish suction pump are analyzed by FLUENT software. The single-phase flow model is numerically simulated under no-load condition, and the two-phase flow model is simulated from four aspects: (1) rotational speed; (2) volume flow; (3) the size of particles (described by particles after the reduction of fish body); 4, the concentration of particles. The wall of the impeller is modeled symmetrically and the flexible rotating distribution is used to make the impeller work and output the fluid to the outlet tube. By analyzing the flow field of fish suction pump, the following conclusions can be drawn: the flexible rotation distribution of impeller, the rotational speed of 1250radmin-1450radr / min, and the flow rate of 0.8Q-1.2Q are most suitable. The ratio of fish water mixture (the ratio of fish volume to water) is 30%-50% suitable for live fish transport. Through the joint venture test, in line with the practical application.
【学位授予单位】：浙江海洋大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S972.7
本文编号：2420205
[Abstract]:Fish suction pump is an important part of trawler's transport of live fish, and its quality has a great influence on live fish. Therefore, the efficiency of fish suction pump and the damage rate of live fish have been the most concerned issues. How to improve the efficiency of fish suction pump and reduce the damage rate of fish suction pump is an important goal pursued by various enterprises. In this paper, the main transport object of the suction pump is the autumnal saber, the length of which is about 20-35 cm. In order to get the research data of fish suction pump better, the structure design and numerical simulation calculation of fish suction pump are studied. In the design, the characteristics of ordinary centrifugal pump and sediment suction pump are combined. The structure and form of impeller are determined, and the actual size is reduced ten times by Solidworks. The single phase flow and two phase flow field of fish suction pump are analyzed by FLUENT software. The single-phase flow model is numerically simulated under no-load condition, and the two-phase flow model is simulated from four aspects: (1) rotational speed; (2) volume flow; (3) the size of particles (described by particles after the reduction of fish body); 4, the concentration of particles. The wall of the impeller is modeled symmetrically and the flexible rotating distribution is used to make the impeller work and output the fluid to the outlet tube. By analyzing the flow field of fish suction pump, the following conclusions can be drawn: the flexible rotation distribution of impeller, the rotational speed of 1250radmin-1450radr / min, and the flow rate of 0.8Q-1.2Q are most suitable. The ratio of fish water mixture (the ratio of fish volume to water) is 30%-50% suitable for live fish transport. Through the joint venture test, in line with the practical application.
【学位授予单位】：浙江海洋大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：S972.7
【参考文献】
相关期刊论文 前10条
1 胡庆松;王曼;陈雷雷;李俊;;我国远洋渔船现状及发展策略[J];渔业现代化;2016年04期
2 刘平;徐志强;徐中伟;;离心式吸鱼泵叶轮的设计[J];流体机械;2016年03期
3 严谨;钟乐;古国忠;李尧;;南海灯光围网渔船改装设计[J];船海工程;2015年04期
4 涂国华;燕振国;赵晓慧;马燕凯;毛枚良;;SA和SST湍流模型对高超声速边界层强制转捩的适应性[J];航空学报;2015年05期
5 韩丽娜;;中国水产品出口竞争力及发展策略研究[J];世界农业;2014年07期
6 袁建平;张瑞橙;金荣;;离心泵用赫姆霍兹水消声器试验研究[J];排灌机械工程学报;2013年11期
7 董宇红;周亦航;邓义求;;基于格子Boltzmann方程的大涡模拟对湍流时空关联性的研究[J];北京理工大学学报;2012年08期
8 贺波;;世界渔业捕捞装备技术现状及发展趋势[J];中国水产;2012年05期
9 刘伟明;陈效鹏;钟诚文;周新刚;;基于多松弛格子Boltzmann方法插值反弹运动边界研究[J];中国科学技术大学学报;2012年03期
10 朱博;王强;郭慧军;张潇玲;杜明俊;;基于双欧拉模型的流化床气固两相流场数值模拟[J];大庆石油学院学报;2011年03期
，本文编号：2420205
本文链接：https://www.wllwen.com/shoufeilunwen/zaizhiyanjiusheng/2420205.html
