Condenser and power plant

A condenser comprising:

• a steam inlet through which steam is received;
• a tube nest comprising a plurality of cooling tubes for condensing the steam received through the steam inlet and at least one noncondensable gas extracting tube through which noncondensable gases contained in the steam are extracted;
• a condensate outlet through which condensate condensed by the cooling tubes is discharged;
• and a vessel surrounding the tube nest, characterized in that:
• the tube nest has a massed region formed near the noncondensable gas extracting tube by arranging the cooling tubes densely so as to surround the noncondensable gas extracting tube;
• the cooling tubes are arranged to form flow passages in a region between the massed region and the steam inlet, the flow passages extending from an outer circumference of the massed region toward the steam inlet substantially parallel to side walls of the vessel and having a larger width than diameters of the cooling tubes;
• the tube nest is spaced from the side walls of the vessel and a minimum distance between an outer circumference of the tube nest and the side walls of the vessel is larger than a maximum width of the flow passages;
• a steam condensing chamber for condensing the steam contained in the noncondensable gases which are extracted from the noncondensable gas extracting tube is arranged in the massed region;
• and
• a noncondensable gas guiding means for guiding the noncondensable gases extracted from the steam condensing chamber so as to enable the extracted noncondensable gases to be discharged outside of the condenser is at least partially arranged in the tube nest.

A condenser comprising:

• a steam inlet through which steam is received;
• a tube nest comprising a plurality of cooling tubes for condensing the steam received through the steam inlet and at least one noncondensable gas extracting tube through which noncondensable gases contained in the steam are extracted;
• a condensate outlet through which condensate condensed by the cooling tubes is discharged;
• and a vessel surrounding the tube nest;
• characterized in that:
• the vessel has a first water chamber through which cooling water is supplied to the cooling tubes and a second water chamber through which the cooling water is discharged from the cooling tubes;
• the tube nest has a massed region formed near the noncondensable gas extracting tube by arranging the cooling tubes densely so as to surround the noncondensable gas extracting tube;
• the cooling tubes are arranged to form flow passages in a region between the massed region and the steam inlet, the flow passages extending from an outer circumference of the massed region toward the steam inlet substantially parallel to side walls of the vessel and having a larger width than diameters of the cooling tubes;
• the tube nest is spaced from the side walls of the vessel and a minimum distance between an outer circumference of the tube nest and the side walls of the vessel is larger than a maximum width of the flow passages;
• a steam condensing chamber for condensing the steam contained in the noncondensable gases which are extracted from the noncondensable gas extracting tube is arranged in the massed region;
• and
• noncondensable gas guiding means for guiding the noncondensable gases extracted from the steam condensing chamber so as to enable the extracted noncondensable gases to be discharged outside of the condenser is at least partially arranged in the tube nest.

A condenser comprising:

• a steam inlet through which steam is received;
• a tube nest comprising a plurality of cooling tubes for condensing the steam received through the steam inlet and at least one noncondensable gas extracting tube through which noncondensable gases contained in the steam are extracted;
• a condensate outlet through which condensate condensed by the cooling tubes is discharged;
• and a vessel surrounding the tube nest;
• characterized in that:
• the tube nest has a massed region formed near the noncondensable gas extracting tube by arranging the cooling tubes densely so as to surround the noncondensable gas extracting tube;
• the cooling tubes are arranged to form flow passages in a region between the massed region and the steam inlet, the flow passages extending from an outer circumference of the massed region toward the steam inlet substantially parallel to side walls of the vessel and having a larger width than diameters of the cooling tubes;
• a steam condensing chamber for condensing the steam contained in the noncondensable gases which are extracted from the noncondensable gas extracting tube is arranged in the massed region;
• and
• means at least partially arranged in the tube nest for guiding the noncondensable gases extracted from the steam condensing chamber so as to enable the extracted noncondensable gases to be discharged outside of the condenser.