摘要：船舶压载水处理系统中的余氯分析仪作为核心监测单元，实时在线监测过程水中的含氯浓度，其检测精度与数据可靠性直接关系到系统运行效能及国际海事组织D-2排放标准的合规性；本文针对压载水主管路取样工艺设计中存在的取样滞后性、数据波动大等因素，通过设计压载水主管路取样点、取样管路，采用隔膜式取样泵等，保证取样水的实时准确性。通过采用该取样工艺管路设计，可提高余氯分析仪的取样稳定性、数据实时性，进而使压载水处理系统更加稳定高效的运行。
Abstract: The residual chlorine analyzer in the ship's ballast water treatment system serves as a core monitoring unit, providing real-time online monitoring of the chlorine concentration in the process water. Its detection accuracy and data reliability directly affect the operational efficiency of the system and compliance with the International Maritime Organization's D-2 discharge standard. This paper focus on the factors such as sampling lag and large data fluctuations existing in the sampling process design of the main ballast water pipeline. By designing the sampling point and sampling pipeline of the main ballast water pipeline and adopting diaphragm sampling pumps, the real-time accuracy of the sampling water is ensured. Through the adoption of this sampling process pipeline design, the sampling stability and data real-time performance of the residual chlorine analyzer can be improved, thereby making the ballast water treatment system operate more stably and efficiently.
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