Fuel assembly alignment pin straightening device
US4824632A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1987 |
| Grant date | Apr 25, 1989 |
| Priority date | — |
| Expiry date | Dec 31, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S72/702
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A straightening device (16) for bent fuel assembly alignment pins (12) in an upper core plate (10) comprises elongated mast (22) having an upper and lower portion, bail (25) secured to the upper portion and cross member (28) secured to the lower portion. At one end of the cross member (28) is attached pin straightening assembly (19), the other end having counterweight (31) to assure a horizontal orientation of the cross member (28). Pin straightening assembly (19) is further comprised of housing (37) having wedge-shaped adjustable shim (61) connected to its top surface, the housing (37) secured to the cross member (28) by baseplate (34). Four axially compressible and laterally deformable compression springs (41) are connected between baseplate (34) and housing (37) to provide angular and translational compliance for housing (37). Housing (37) has two vertical holes disposed therein, first hole (50) adapted to receive hardened die insert (54) having bore (55 ) with frusto-conical opening (56) for receiving bent pin (12), and second hole (51) for receiving another pin (14). Connected to base plate (34) opposite housing (37) is hydraulic ram (44) for moving housing (37) into full plan…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.