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US3776164A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for filling and, if desired, emptying inert gas poor in oxygen into or from holds in ships, respectively

Assignee: Kongsberg Gruppen ASA
•
Filing: 1971-10-01
•
Granted: 1973-12-04
•
Expires: 1991-10-01
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Abstract

Abstract Exhaust gases from an emergency or auxilliary gas turbine/generator set are passed to an afterburner in which the rather high oxygen content of said exhaust gases is reduced to an acceptable level for use of the resulting gas as an inert explosion-proof gas for empty oil tanks. Before the gas is supplied to the tanks it is cooled by water supplied by a pump driven by the electric current produced by the generator. No blowers are required, since the turbine may operate against the pressure required for feeding the gas through the afterburner and the cooler and into the tanks. For displacing the inert gas from the tanks when desired, compressed air from the compressor unit of the turbine/generator set is tapped off and passed through an injector in which additional air from the atmosphere is entrained. The combined air is passed through the cooler and fed to the tanks through a suitable distribution system.

Inventors

  • 👤 T Westrum

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 08:39
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/14; B63; B63B; B63B57/00; B63B57/04; A; A62; A62C; A62C3/00; A62C3/07; A62C3/10; A62C99/00; A62C99/0009; A62C99/0018

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 89 words
Apparatus for filling and, if desired, emptying inert gas, poor in oxygen, into or from holds in ships, respectively, said apparatus being connected to the exhaust conduit from a gas turbine, said apparatus comprising an afterburner for reduction of the oxygen content of the exhaust gases of the turbine, a cooler for reduction of the temperature of the gases, a discharge conduit for the cooled combustion gases and a valve for controlling the supply of exhaust gases to maintain the pressure of the inert gas within the desired limits.
Claim 2
Dependent Claim 89 words
Apparatus for filling and, if desired, emptying inert gas, poor in oxygen, into or from holds in ships, respectively, said apparatus being connected to the exhaust conduit from a gas turbine, said apparatus comprising an afterburner for reduction of the oxygen content of the exhaust gases of the turbine, a cooler for reduction of the temperature of the gases, a discharge conduit for the cooled combustion gases and a valve for controlling the supply of exhaust gases to maintain the pressure of the inert gas within the desired limits.
Claim 3
Dependent Claim 45 words
Apparatus as claimed in claim 1, characterized by an oxygen analyser for analysing the oxygen content of the supplied inert gas and a valve for controlling the supply of fuel to the afterburner said valve being controlled in accordance with the result of the analysis.
Claim 4
Dependent Claim 54 words
ApparatuS as claimed in claim 2, characterized by a branch conduit leading from the discharge conduit for inert gas into the atmosphere and one or more valves controlled by the oxygen analyser for supplying gas to the branch conduit instead of the discharge conduit when the oxygen content is not within the prescribed limits.
Claim 5
Dependent Claim 61 words
Apparatus as claimed in claim 3, characterized by an air conduit for connection to the pressure side of the compressor unit of the turbine and delivery of compressed air to the discharge conduit through the cooler and an injector inserted in said air conduit and operated by the compressed air from the compressor to draw additional air into the air conduit.

References Cited (Backward Citations)

US2142545A Cited
US3285711A Cited
US3389972A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-12-03 1977-06-04 1977-12-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-12-03 1981-06-04 1981-12-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-12-03 1985-06-04 1985-12-04 $7700.00 Window Closed / Lapsed

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