Bottom entry pumping system with tertiary containment
US6286320A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2000 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Jan 27, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2260/013
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bottom entry pumping system for liquids, particularly cryogenic liquids, is described which includes a container with an outer wall, which may be concrete and/or metal, and an optional inner metal liner. A line is provided for transporting liquid from a liquid storage tank into the container via a pump connected to the line. The line may be optionally vacuum-jacketed. There is also provided at least one cryogenic valve in the line which can be controlled from outside the container. While pumping liquified natural gas (LNG) is an expected use of the invention, pumping other cryogenic liquids and even other non-cryogenic liquids may be performed with the invention. It is anticipated that the bottom entry pumping system of the invention will meet NFPA 59A requirements in the full containment embodiment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.