Abstract: To enhance the cage’s resistance to extreme sea conditions,a ballast water system was designed in compliance with regulatory requirements,and buoyancy tests were conducted at the farming site. During the trials,two methods -inclination sensor and liquid level telemetry conversion-were employed to monitor the cage ’s inclination. The results demonstrated that : The cage’s buoyancy process lasted approximately 6 hours, meeting design specifications; Buoyancy speed exhibited a negative correlation with the cage’s cross-sectional area,with pronounced velocity fluctuations observed at sectional transition points; The maximum measured horizontal/longitudinal angles reached -2. 5° and 1. 25° respectively,while calculated values peaked at -1° and 1° ; The inclination data from both measurement methods showed consistent trends throughout the test. The ballast water system's performance was confirmed via buoyancy testing,where the inclinometer's enhanced sensitivity facilitated real-time net cage tilt detection. The dual-monitoring approach provided high-precision data for the optimization design of deep-sea cages.

Key words: deep-sea cage, ballast water, theoretical calculation, design selection, experimental verification

摘要： 为提高深远海网箱应对极端天气的能力 ,依据规范要求对某深远海网箱进行了压载水系统设计 ,并在养殖海域进行了网箱沉浮试验 ,试验过程中采用倾角传感器与液位遥测换算两种方法记录网箱倾角 。结果显示 : 网箱沉浮时间约 6h,满足设计要求;网箱沉浮速度与网箱截面积负相关 ,在截面突变处沉浮速度变化明显;网箱横纵倾测量最大值分别为-2. 5°和 1. 25° ,网箱横纵倾计算最大值分别为-1°和 1° ;沉浮试验中网箱倾角测量值与计算值的变化趋势一致性良好 。通过沉浮试验验证了压载水系统的合理性 ,倾角传感器敏感程度更高 ,可用于网箱倾斜报警 。双监测方案为深远海网箱的优化设计提供了高精度数据支持。

关键词: 深远海网箱, 压载水, 理论计算, 设计选型, 试验验证