發(fā)布時(shí)間：2019-02-12 07:28

【摘要】：吸魚泵作為圍拖網(wǎng)漁船活魚運(yùn)輸?shù)闹匾考?其質(zhì)量的好壞對活魚的影響非常巨大。為此,吸魚泵的效率以及活魚的損傷率一直是人們最為關(guān)心的問題。如何提高吸魚泵的效率以及降低吸魚泵的損傷率是各個(gè)企業(yè)追逐的重要目標(biāo)。本文吸魚泵的主要輸送的對象是秋刀魚,秋刀魚的長度在20-35厘米左右。為了使合作單位能夠更好的得到吸魚泵的研究數(shù)據(jù),對吸魚泵進(jìn)行結(jié)構(gòu)設(shè)計(jì)以及通過數(shù)值模擬計(jì)算進(jìn)行研究,在設(shè)計(jì)上:結(jié)合普通離心泵以及吸沙泵的特征,確定葉輪的結(jié)構(gòu)和形式,并通過三維軟件Solidworks對實(shí)際尺寸縮小十倍建模。在分析上:通過FLUENT軟件對吸魚泵進(jìn)行單相流與兩相流流場分析。單相流模型在空載工況時(shí)選取轉(zhuǎn)速度進(jìn)行數(shù)值模擬;兩相流模型從四個(gè)方面進(jìn)行數(shù)值模擬:1、轉(zhuǎn)速;2、體積流量;3、顆粒(魚體縮小后以顆粒描述)大小;4、顆粒的濃度。葉輪的壁面采用對稱建模,并且運(yùn)用柔性旋轉(zhuǎn)分布,這樣使得葉輪做有用功同時(shí)將流體輸出到出口管。通過對吸魚泵流場的分析,能夠得到以下的結(jié)論:葉輪采用的柔性旋轉(zhuǎn)分布,轉(zhuǎn)速在1250rad/min-1450rad/min,流量在0.8Q-1.2Q最適合。魚水混合物之比(魚的體積與水的比例)在30%-50%適合活魚輸送。經(jīng)合作企業(yè)試驗(yàn),符合實(shí)際應(yīng)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.
【學(xué)位授予單位】：浙江海洋大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：S972.7

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 胡慶松;王曼;陳雷雷;李俊;;我國遠(yuǎn)洋漁船現(xiàn)狀及發(fā)展策略[J];漁業(yè)現(xiàn)代化;2016年04期

2 劉平;徐志強(qiáng);徐中偉;;離心式吸魚泵葉輪的設(shè)計(jì)[J];流體機(jī)械;2016年03期

3 嚴(yán)謹(jǐn);鐘樂;古國忠;李堯;;南海燈光圍網(wǎng)漁船改裝設(shè)計(jì)[J];船海工程;2015年04期

4 涂國華;燕振國;趙曉慧;馬燕凱;毛枚良;;SA和SST湍流模型對高超聲速邊界層強(qiáng)制轉(zhuǎn)捩的適應(yīng)性[J];航空學(xué)報(bào);2015年05期

5 韓麗娜;;中國水產(chǎn)品出口競爭力及發(fā)展策略研究[J];世界農(nóng)業(yè);2014年07期

6 袁建平;張瑞橙;金榮;;離心泵用赫姆霍茲水消聲器試驗(yàn)研究[J];排灌機(jī)械工程學(xué)報(bào);2013年11期

7 董宇紅;周亦航;鄧義求;;基于格子Boltzmann方程的大渦模擬對湍流時(shí)空關(guān)聯(lián)性的研究[J];北京理工大學(xué)學(xué)報(bào);2012年08期

8 賀波;;世界漁業(yè)捕撈裝備技術(shù)現(xiàn)狀及發(fā)展趨勢[J];中國水產(chǎn);2012年05期

9 劉偉明;陳效鵬;鐘誠文;周新剛;;基于多松弛格子Boltzmann方法插值反彈運(yùn)動(dòng)邊界研究[J];中國科學(xué)技術(shù)大學(xué)學(xué)報(bào);2012年03期

10 朱博;王強(qiáng);郭慧軍;張瀟玲;杜明俊;;基于雙歐拉模型的流化床氣固兩相流場數(shù)值模擬[J];大慶石油學(xué)院學(xué)報(bào);2011年03期

，

本文編號(hào)：2420205