Multiple pressure condenser for steam turbines, with heating devices for suppressing condensate overcooling
OwnerAbdel Salehinventor
Life of this patent
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Abstract
A multiple pressure condenser has heating devices for the overcooled parts of the condensate, which devices are accommodated alone or preferably in pairs in one or more of the condenser parts. The heating devices have perforated droplet plates located one above the other, from which droplet plates the overcooled condensate drips downwards in steps and is heated to at least the saturation temperature of the condenser space by high pressure exhaust steam flowing upwards. The overcooled condensate arrives at the highest droplet plate via drain and rising ducts, which are connected to the space over the intermediate floor or floors which separate the exhaust steam spaces from the hot well.
Claims4
In a multiple pressure condenser for steam turbines of the type including a first low pressure condenser unit for receiving exhaust steam that is overcooled and a second intermediate condenser unit for receiving exhaust steam that is at least at a saturation temperature, the improvement comprising:
- a hot well;
- an intermediate floor separating the hot well from an exhaust steam space, said floor having condensate drain openings;
- a plurality of heating units, each heating unit including a multiplicity of stacked droplet plates located beneath said intermediate floor and being separated from each other, each of said droplet plates being perforated and having rims along their edges;
- first drain ducts extending downwardly from said first and second condenser;
- a second drain duct extending upwardly and connected to said first drain ducts, said second duct extending upwardly to the level of the highest droplet plate;
- an air collection duct in communication with said hot well via a perforated wall;
- and
- at least one air extraction pipe located above said stacked droplet plates.
Dependencies are inferred from the claim text.