Double-layer short target capable of being stacked and positioned

The invention belongs to the technical field of fuel assemblies, and particularly relates to a double-layer short target capable of being stacked and positioned. Comprising an inner target tube, an outer target tube and a supporting component, the supporting component connects the inner target tube and the outer target tube into a whole, and the relative positions of the inner target tube and the outer target tube are fixed through a positioning component. According to the invention, the requirements of space saving of the irradiation neutron tube, less waste after target irradiation, convenience in post-treatment, easiness in production, reliable connection, easiness in assembly, convenience in automatic production and manufacturing and the like are met. 本发明属于燃料组件技术领域，具体涉及一种可叠放定位的双层短靶。包括内靶管，外靶管，支撑部件，支撑部件将内靶管与外靶管连接起来成为整体，内靶管与外靶管相对位置通过定位部件固定。本发明满足节约辐照中子管空间、靶件辐照后废物少，便于后处理，易于生产，连接可靠，组装容易，便于自动化生产制造等需求。