Apparatus for supplying cryogenic fluid, namely nitrogen, to extinguish fires
US5327732A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Apr 28, 1992 |
| Grant date | Jul 12, 1994 |
| Priority date | — |
| Expiry date | Apr 28, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2270/0171
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present invention relates to a high capacity movable plant for continuously distributing nitrogen in gaseous phase or in a mixture gaseous and liquid phases for extinguishing fires comprising at least a high capacity thermally insulated tank for storing nitrogen in liquid phase at a temperature of about -196.degree. C. and at maximum pressure of about 405.2 kPa and from which nitrogen in liquid phase is supplied, with a liquid nitrogen supplying capacity of about 50 m.sup.3, to a pumping unit comprising at least three pumps each having each a flow rate of 175 m.sup.3 /h with a maximum differential pressure of 1013 kPa. The liquid nitrogen is vaporized in the vaporization and mixture regulation unit with a vaporization capacity of about 360,000 m.sup.3 /h for liquid nitrogen. The vaporization and mixture regulation unit includes at least a heat exchanger, a wind tunnel, a ventilation assembly, an air inlet window through which the liquid nitrogen is vaporized and the gaseous phase can be mixed with the liquid phase through suitably arranged valves and ejectors. The nitrogen in the gaseous phase or the mixture of nitrogen in the gaseous and liquid phase enters an exhaust duct whe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.