Double-cylinder selector valve for detecting and locating failed nuclear fuel assemblies
US4581198A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1983 |
| Grant date | Apr 8, 1986 |
| Priority date | — |
| Expiry date | Oct 6, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A double-cylinder selector valve for detecting and locating failed nuclear fuel assemblies including a fixed outer cylinder provided on the circumferential wall surface thereof with a plurality of outer sampling holes arranged in a grid in both the longitudinal and circumferential directions, and a movable inner cylinder disposed rotatably within the fixed outer cylinder and provided on the circumferential wall surface thereof with a plurality of inner sampling holes. Each of coolant sampling pipes extending from the coolant outlets of each of a plurality of nuclear fuel assemblies is connected to one of the outer sampling holes. The inner sampling holes communicate with some of the plurality of outer sampling holes in the fixed outer cylinder at one position of the movable inner cylinder and with others of the outer sampling holes at other positions of the movable inner cylinder. During one complete rotation of the movable inner cylinder, each of the outer sampling holes can communicate at least once with any of the inner sampling holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.