Experimental investigation on the convey performance and control strategy of a special annular jet pump for deep sea feeding

IF 3.6 2区农林科学 Q2 AGRICULTURAL ENGINEERING Aquacultural Engineering Pub Date : 2024-08-08 DOI:10.1016/j.aquaeng.2024.102454

Xiao Chen, Shengtong Wang, Xuwang Wang, Kai Chen, Huifeng Su, Musheng Chen

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Abstract

This research conducted an experimental investigation on an annular jet pump (AJP), designed specifically for deep sea feeding used 0–30 m underwater, through building an experimental prototype of an underwater hydraulic conveying system. The experiment established relationships between the limit cavitation point, pressure ratio, flow rate ratio, pump efficiency, and secondary flow rate with the working water state and pump outlet pressure. Furthermore, the optimal efficiency control strategy and the optimal secondary flow control strategy of the AJP for the underwater hydraulic feeding system were formulated, and the respective characteristics were compared. The feed pellets two-phase conveying experiment was also conducted to investigate changes from conveying water only in the limit cavitation point and secondary flow rate. Both water only and feed pellet conveying in AJP will approach the limit cavitation state, and the flow rate ratio will stop changing when the pressure ratio of the AJP is less than a certain value. These results offer an experimental basis and control reference for the design and construction of an adaptive-water-depth hydraulic feeding system for deep sea aquaculture.

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深海进料专用环形喷射泵的输送性能和控制策略实验研究

本研究通过构建水下液压输送系统的实验原型，对专为水下 0-30 米深海进料而设计的环形喷射泵（AJP）进行了实验研究。实验确定了极限气蚀点、压力比、流量比、泵效率和二次流量与工作水状态和泵出口压力之间的关系。此外，还制定了水下水力输料系统的 AJP 最佳效率控制策略和最佳二次流量控制策略，并比较了各自的特性。还进行了饲料颗粒两相输送实验，研究了与只输送水相比，在极限气蚀点和二次流量方面的变化。在 AJP 中输送纯水和饲料颗粒都会接近极限气蚀状态，当 AJP 的压力比小于一定值时，流量比将停止变化。这些结果为设计和建造深海养殖自适应水深水力投喂系统提供了实验依据和控制参考。

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来源期刊

Aquacultural Engineering 农林科学-农业工程

CiteScore

8.60

自引率

10.00%

发文量

审稿时长

>24 weeks

期刊介绍： Aquacultural Engineering is concerned with the design and development of effective aquacultural systems for marine and freshwater facilities. The journal aims to apply the knowledge gained from basic research which potentially can be translated into commercial operations. Problems of scale-up and application of research data involve many parameters, both physical and biological, making it difficult to anticipate the interaction between the unit processes and the cultured animals. Aquacultural Engineering aims to develop this bioengineering interface for aquaculture and welcomes contributions in the following areas: – Engineering and design of aquaculture facilities – Engineering-based research studies – Construction experience and techniques – In-service experience, commissioning, operation – Materials selection and their uses – Quantification of biological data and constraints