Pressurized water reactor with upper vessel section providing both pressure and flow control
US10020077B2 · kind B2 · utility
2Cited by
38References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2015 |
| Grant date | Jul 10, 2018 |
| Priority date | — |
| Expiry date | Mar 30, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49245
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pressurized water reactor (PWR) includes a vertical cylindrical pressure vessel having a lower portion containing a nuclear reactor core and a vessel head defining an integral pressurizer. A reactor coolant pump (RCP) mounted on the vessel head includes an impeller inside the pressure vessel, a pump motor outside the pressure vessel, and a vertical drive shaft connecting the motor and impeller. The drive shaft does not pass through the integral pressurizer. The drive shaft passes through a vessel penetration of the pressure vessel that is at least large enough for the impeller to pass through.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.