Steam turbine waste heat exchange system for thermal power plant

• Main Authors: WANG LIZHI, LIU WANLI, WANG JITE, WEI JIAXIAN, QIU XIN, QI ZHIGUANG, MO FEI, ZHU JIANPING, LI FENGMAN, FENG FENG, YUAN MENG, GONG YUYANG, XIE KE
• Format: Patent
• Language: Chinese; English
• Published: 23.04.2014
• Subjects: AIR SUPPLY; BLASTING; COMBUSTION APPARATUS; COMBUSTION PROCESSES; DRAUGHT-INDUCING; ENGINE PLANTS IN GENERAL; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ACCUMULATORS; STEAM ENGINE PLANTS; STEAM ENGINES; SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS; WEAPONS

The invention discloses a steam turbine waste heat exchange system for a thermal power plant. The system comprises a steam distribution straight tube, a first steam distribution tapered tube, a heat exchange unit, a second steam distribution tapered tube and two flanges. The steam distribution straight tube is connected with the small-diameter end of the first steam distribution tapered tube, the large-diameter end of the first steam distribution tapered tube is connected with one side of the heat exchange unit through the first flange, the other side of the heat exchange unit is connected with the large-diameter end of the second steam distribution tapered tube through the second flange, and the small-diameter end of the second steam distribution tapered tube is connected with the air cooling island inlet end. The heat exchange unit comprises a casing, a thermal-insulation layer, a main heat exchange tube and a plurality of auxiliary heat exchange tubes. The main heat exchange tube and the plurality of auxil