NUCLEAR HEART ELEMENT RETENTION DEVICE AND NUCLEAR REACTOR COMBUSTIBLE ASSEMBLY

摘要

Nuclear core element retaining device (100), configured on an adapter plate (50) of an upper nozzle. The device comprises a hollow spring guide (10) in which an instrumentation insertion channel (11) is formed, a base plate (20) having a central hole (21) formed at its center, and a plurality of water flow holes formed around the central hole (21). The lower end of the spring guide (10) is connected and assembled with the upper end of the base plate (20). The instrumentation insertion channel (11) communicates with the central hole (21) and the base plate (20) is located above the adapter plate (50) and bears directly against it . A retaining bar (30) is slidably mounted on the upper end of the spring guide (10) and is located above the base plate (20). A spring member (40) is configured between the retaining bar (30) and the base plate (20), and through it the retaining bar (30) pushes the base plate (20) to ensure that the base plate (20) bears against the adapter plate (50). The structure is stable and reliable.