小型活体水产运输箱电解水增氧装置设计与试验  

Design and test of electrolytic water oxygen increasing device for small transport box of living aquatic products

作　　者：莫嘉嗣[1] 闫国琦[1] 夏俊杰 金莫辉 魏德仙[1] Mo Jiasi;Yan Guoqi;Xia Junjie;Jin Mohui;Wei Dexian(College of Engineering,South China Agricultural University,Guangzhou 510642,China)

机构地区：[1]华南农业大学工程学院,广州510642

出　　处：《农业工程学报》2020年第18期26-33,共8页Transactions of the Chinese Society of Agricultural Engineering

基　　金：广东省特色农产品(鳗鱼、茶枝柑)智能装备关键技术研究与推广(粤财科教〔2019〕170号);广东省教育厅青年人才类项目(2018KQNCX021)。

摘　　要：水产长距离运输保证鲜活需要保持水产原生存环境的压力、水质、溶氧度等条件,其中溶氧度直接关系水产的存活,因此增氧装置的设计成为活体水产运输的关键技术之一。为了解决电解水增氧方式能耗大、难以小型化的问题,该研究设计了适用于小型水产运输箱的电解水增氧装置。首先根据计算流体力学软件仿真计算结果设计了装置中可在正负电极间产生恒稳均匀流场的整流结构参数;然后通过试验探索水溶氧和装置总能耗在电解电压与水交换流量影响下的关系。试验结果表明:在容积为8×10^-3 m^3的箱体内,采用直流电解,当电解电压为37 V、水交换流量为6.97×10^-5 m^3/s时,总能耗最低为39.39 kJ。该装置设计和试验结果可为电解水增氧方法在水产运输和养殖中的实际应用提供了依据。Fresh aquatic products are more and more favored by the market,with the continuous expansion of aquatic trade,living aquatic transportation becomes more and more important.How to improve the survival rate of living aquatic transportation and reduce the cost of living aquatic transportation is an urgent problem to be solved.To ensure the survival of aquatic transport process,it is necessary to maintain the original aquatic survival environment,such as pressure,water quality,dissolved oxygen degree and so on.The dissolved oxygen degree is the key parameter for the survival of aquatic products,then the oxygen increasing device becomes the key technology for small transport box.In order to develop a transportation device for living aquatic products that can continuously increase oxygen,consume less power,have small size,use flexibly and conveniently,a electrolytic water oxygen increasing device was designed for small living aquatic products transportation box.Firstly,a stable constant flow field needed to be created between positive and negative electrodes in the pipeline.Therefore,the structure of transport box and oxygen increasing device were designed,and the structure in the electrolytic water oxygen increasing device which can generate steady and uniform flow field was designed by computational fluid dynamics simulation software.The structural parameters of the flow straightening unit were design with different variables.The control variable method was used to determine range of the parameter,that is,the three variables were respectively controlled unchanged and the other variable was adjusted from small to large for the simulation test.The parameters selection via simulation results was convenient for efficient exchange of water and oxygen.Then,hypoxic water was prepared and the initial oxygen-solubility of hypoxic water was tested by a dissolved oxygen meter.The concrete experimental method was that the electrolytic water oxygen increasing device was placed at the bottom of the sealed box and seal the box body

关 键 词：设计 试验 装置 活体水产运输 电解水增氧 

分 类 号：S981.14[农业科学—捕捞与储运]