底部喷嘴和包括这种底部喷嘴的核燃料组件
By introducing a lower pad and debris filter connection component into the bottom nozzle design of the nuclear fuel assembly, the problem of debris damaging the fuel rods was solved, protection against micro-vibration wear and optimization of coolant flow were achieved, and maintenance operations were simplified.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FRAMATOME SA
- Filing Date
- 2022-06-02
- Publication Date
- 2026-07-17
AI Technical Summary
Existing nuclear fuel assemblies are susceptible to damage from metal debris during maintenance operations, leading to micro-vibration wear, and debris filters increase the complexity and pressure drop of coolant flow.
A bottom nozzle is designed, comprising a tubular body, a lower pad, and a debris filter. The conduit is fixed to the lower pad by a connecting member, and the nozzle operates below the debris filter for easy installation and removal. This design ensures an axial gap between the filter and the pad, reducing the risk of micro-vibration wear.
It effectively prevents debris from damaging fuel rods, reduces the risk of fretting wear, maintains smooth coolant flow, simplifies maintenance, and provides flexible filter replacement options.
Smart Images
Figure CN117413320B_ABST