南极磷虾虾水分离装置设计

Design of krill-water separation device for Antarctic krill

为了匹配南极磷虾连续泵吸捕捞系统,改变传统南极磷虾捕捞高损伤、低附加值加工的现状,提升南极磷虾捕捞产业自动化水平,针对新型的南极磷虾连续泵吸捕捞方式后续阶段的虾水分离和传输问题,减少在南极磷虾泵连续吸捕捞输送过程中的损伤,研究并开发了螺旋输送式虾水分离器,对其分离效率和输送速度等参数进行了设计计算和流体分析。结果显示:虾水分离器能够满足连续泵吸设备设计流量下南极磷虾的分离和输送,无大量南极磷虾堆积挤压造成虾体破损,并且能够通过对转轴转速和主体倾斜角的调节,实现泵吸输送变流量条件下虾水混合物的分离。研究表明,本设计可以通过缩放设计和并行布置,以满足不同吨位和布局的南极磷虾连续泵吸捕捞船,为南极磷虾虾水分离实际应用提供参考。

To match the Antarctic krill continuous pumping fishing system,change the current situation of traditional Antarctic krill fishing with high damage and low value-added processing,improve the automation process of water separation and shipboard krill transportation,aiming at the problems of krill-water separation and transmission in the new continuous pumping system of Antarctic krill,and reduce the damage during continuous underwater pumping fishing and transportation,a krill-water separator with spiral conveying structure is developed,its separation efficiency,transportation speed,and other relevant parameters are studied according to the fluid model analysis.It is shown that the krill-water separator can meet the separation and transportation of Antarctic krill under the designing flow rate,without a large number of Antarctic krill accumulation and extrusion resulting in shrimp body damage,and also could realize the separation of shrimp water mixture under the variable flow rate of pumping and transportation by adjusting the rotation speed and inclination angle of the main body.The design can be scaled and arranged in parallel to meet the needs of Antarctic krill continuous pumping fishing vessels with different tonnage and layout,and can provide a reference for the practical application of krill-water separation.