Shock damping device for neutron absorbing bars
US5076995A · kind A · utility
3Cited by
7References
9Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Dec 9, 1987 |
| Grant date | Dec 31, 1991 |
| Priority date | — |
| Expiry date | Dec 9, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A device for damping the fall of a neutron absorbing bar on the upper end piece of a nuclear fuel assembly, typically a PWR, comprises at least one pair of cylinder-piston sets which are located symmetrically with respect to the vertical axis of the fuel assembly. One of the cylinder and piston in each set is carried by a fixed plate secured to the upper end piece. The other of the cylinder and piston is fixed to a movable plate arranged to receive the bar upon fall thereof and to move vertically toward the fixed plate, damping being achieved by the head loss impressed to the fluid forced out of the cylinders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.