放化设施真空抽吸气动送样系统设计及验证

Design and Verification of Vacuum Pneumatic Sample Transport System in Radio and Chemical Facilities

放化设施放射性样品气动传输是放射性物料取样分析的重要环节,分为压空气动送样系统和真空抽吸气动送样系统,目前国内放化设施均采用压空气动送样,国外则采用安全性和可靠性更高的真空抽吸气动送样系统。本文根据放化设施真空抽吸气动送样系统需求,确定了系统设计原则、系统流程、工作过程以及关键零部件组成,并搭建典型工况试验台架进行了系统验证,样品瓶空瓶、半瓶和满瓶的传输平均速度均≥10 m/s,满足传输安全设计要求,可应用于大型放化设施、核电厂及有特殊需求的化工行业。

Pneumatic transmission of radioactive samples in radiochemical facilities is an important part of the sampling and analysis of radioactive materials. It is divided into compressed air pneumatic sample transport system and vacuum suction pneumatic pneumatic sample transport system. Domestic radiochemical facilities all use compressed air pneumatic sample transport system, and foreign countries use vacuum suction pneumatic sample transport system with higher safety and reliability. In this paper, according to the requirements of vacuum suction pneumatic sample transport system in radiochemical facilities, the system design principles, system process, working process and composition of key components are determined, and a typical working condition test bench is built to verify the system. The average transmission speed of empty bottle and full bottle is ≥10 m/s, which meets the requirements of transmission safety design, and can be used in large-scale radiochemical facilities, nuclear power plants and chemical industries with special needs.