Exhaust process and system and cooling of gases from thermodynamic machines on ships

Abstract

The system according to the invention prevents the effect of turbulence due to exhaust of gases via chimney from propulsion machines on aircraft carriers ( 1 ). It consists of creating internal circulation of water by means of a scope ( 3 ) of a circulation pump ( 4 ), an inlet chamber ( 6 ) in which exhaust gases from the thermodynamic machines of the Ship empty. Water nozzles are placed in this inlet chamber ( 6 ). The resulting mixture is evacuated via a pipe ( 7 ) and a mixing tube ( 8 ) terminating outside the ship, to the stern thereof, just above the water line. Application to aircraft carriers.

1 . A process for exhausting and cooling exhaust gases from thermodynamic machines ( 14 ) of a ship, consisting of cooling exhaust gases by mixing with water on which the ship is floating, characterised in that injection of water takes place in an inlet chamber ( 6 ) by means of several water nozzles ( 12 ), and in that it consists of: 
 recovering the energy at the outlet of the system by means of a mixing tube ( 8 ),    mixing the exhaust gas and water at the outlet of the inlet chamber ( 6 ) in a mixing pipe ( 7 ) over a certain length; and    evacuating the mixture obtained just above the water line of the ship ( 1 ).    
   
   
       2 . The process as claimed in  claim 1 , characterised in that it consists of creating natural circulation of water inside the ship, from the prow to the stern for cool processing by mixing exhaust gases into which water is injected.  
   
   
       3 . The process as claimed in  claim 2 , characterised in that the injection of water is forced by a circulation pump ( 4 ).  
   
   
       4 . A system for exhausting and cooling exhaust gases from thermodynamic machines ( 14 ) on a ship ( 1 ) comprising: 
 an exhaust collector of gases ( 11 ) from the thermodynamic machines ( 14 ) propelling the ship;    a scope ( 3 ) for admitting water, placed in the lower part of the ship ( 1 );    a water inlet pipe ( 5 ) at the outlet of the scope ( 3 );    an inlet chamber ( 6 ) for exhaust gases, placed at the end of the water inlet pipe ( 5 );    a mixing pipe ( 7 ) placed at the outlet of the inlet chamber ( 6 ) and terminating at the stern of the ship ( 1 ) relative to the scope ( 3 ), characterised in that it comprises:    a mixing tube ( 8 ), placed at the outlet of the mixing pipe ( 7 ),    several water nozzles ( 12 ) placed in the inlet chamber,    in that the mixing pipe ( 7 ) has a length equal to approximately six times its diameter, and    in that the outlet of the system terminates at the stern of the ship ( 1 ), just above the water line of the ship ( 1 ).    
   
   
       5 . The system as claimed in  claim 4 , characterised in that it comprises a circulation pump ( 4 ) placed at the inlet of the inlet pipe ( 5 ).  
   
   
       6 . The system as claimed in  claim 4 , characterised in that it comprises a mixer head ( 13 ) in the inlet chamber ( 6 ) at the level of at least one water nozzle ( 12 ).