Single and multi-pressure condensation system

Abstract

The invention relates to a condenser system comprising a condenser with an extraction system. The vent system adapted for variable non-condensable loading by comprising an adjustable ejector for adjustably reducing a pressure ratio between different regions of the condenser.

What is claimed: 
     
         1 . A condenser with a condensing steam flow path, comprising;
 a plurality of cooling tubes, extending transversely to the steam flow path, for containing and directing a cooling water flow; and   an extraction system comprising:
 a first extraction line, with a first inlet; 
 a second extraction line, with a second inlet located in a region of the condenser that, in operation is configured to be at a lower pressure than the first inlet; 
 an adjustable ejector with:
 a nozzle, having an opening, connected to the first extraction line and adapted to enable fluid extracted through the first extraction line to be used as a motive fluid for the adjustable ejector; and 
 a suction inlet connected to the second extraction line so as to enable evacuation of the second extraction line by the adjustable ejector, 
 
   wherein the adjustable ejector having a flow means to vary a flow of the motive fluid.   
     
     
         2 . The condenser of  claim 1 , wherein the second inlet is displaced from the first inlet in a direction of extension of one of the cooling tubes. 
     
     
         3 . The condenser of  claim 1 , wherein the flow means comprises:
 a needle with a first end having a variable diameter in a longitudinal direction extending from the first end; and   an actuator, connected to the needle, adapted to adjustably displace the needle in the nozzle opening such that the variable diameter of the needle varies an area of the nozzle opening thereby varying the flow of the motive fluid.   
     
     
         4 . The condenser of  claim 3 , wherein the variable diameter is a portion of the needle that has an increasing diameter extending away from the first end along at least a partial longitudinal length of the needle. 
     
     
         5 . The condenser of  claim 1 , wherein the condenser is a single-pass condenser. 
     
     
         6 . The condenser of  claim 1 , wherein the condenser is a multi-pass condenser. 
     
     
         7 . The condenser of  claim 1 , wherein the condenser is a single-pressure condenser. 
     
     
         8 . The condenser of  claim 1 , wherein the condenser is a multi-pressure condenser.