Low-pressure heater with composite structure

• Main Authors: ZENG FANSHAN, YOU TIANYUN, LV SHENGJIE, LAN YUEHUA, LI QUAN, LI ZHUONAN
• Format: Patent
• Language: Chinese; English
• Published: 16.02.2011
• Subjects: AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHINBOILERS; BLASTING; CONTROLLING WATER LEVEL; FEED-WATER SUPPLY; HEATING; LIGHTING; MECHANICAL ENGINEERING; PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER; STEAM GENERATION; WEAPONS

The utility model relates to a low-pressure heater with a composite structure. The low-pressure heater comprises a shell (1), a tube bundle (3), close covers (12), a tube pass inlet (11), a tube pass outlet (8), a shell pass inlet (7) and a shell pass outlet (9), wherein the tube bundle (3) is arranged in the shell; the close covers (12) are arranged at the two ends of the shell; the tube pass inlet (11) and the tube pass outlet (8) are arranged on the close covers (12); the shell pass inlet (7) and the shell pass outlet (9) are arranged on the shell (1); the shell (1) forms a superheat section (6), a condensation section (4) and a cooling section (10) in sequence along the flow direction of the medium in a shell pass; the superheat section (6) is positioned at the shell pass inlet (7); the cooling section (10) is positioned under the superheat section (6); and the condensation section (4) is positioned at one side of the superheat section (6) and one side of the cooling section (10). The low-pressure heater