Title:
NUCLEAR FUEL ASSEMBLY BOTTOM NOZZLE COMPRISING CONSTRAINT ANTI-FOREIGN MATTER PLATE
Document Type and Number:
WIPO Patent Application WO/2024/125044
Kind Code:
A1
Abstract:
The present invention provides a nuclear fuel assembly bottom nozzle comprising a constraint anti-foreign matter plate, comprising a base body and an anti-foreign matter plate. The anti-foreign matter plate is horizontally arranged on the upper side of the base body and comprises multiple partition plates; the multiple partition plates intersect to define multiple through holes; the through holes longitudinally pass through the anti-foreign matter plate; the anti-foreign matter plate is further provided with multiple constraint holes that match the bottom ends of external fuel rods and allow the bottom ends of the external fuel rods to insert; the inner walls of the constraint holes are inclined, and the diameter of each constraint hole gradually decreases from top to bottom. The constraint holes have an effect of constraining the vibration of the fuel rods, so as to reduce flow-induced vibration of the fuel rods or the vibration of a fuel assembly caused by an external force, especially the vibration of lower sections of the fuel rods, and achieves a protective effect of the bottom nozzle on the ends of the fuel rods, thereby avoiding abrasion between the ends of the fuel rods and the bottom nozzle caused by the flow-induced vibration. The anti-foreign matter plate is arranged on the upper side of the base body, so that the anti-foreign matter plate can match base bodies of various structures.
More Like This:
Inventors:
WANG CHIHHUANG (CN)
Application Number:
PCT/CN2023/122801
Publication Date:
June 20, 2024
Filing Date:
September 28, 2023
Export Citation:
Assignee:
SHENZHEN UST OPTICS TECH CO LTD (CN)
International Classes:
G02B13/00; G02B7/02; G02B13/18; G03B21/14
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
Download PDF: