High-efficiency heat transfer device with heavy dirt type helical flow path structure

• Main Authors: YU TIANXIANG, PENG DEQI, YU XIUMIN, WU QIHUA, YU TIANLAN, LIU GUIYING, XIANG YUHUA, JIANG SHAOQING, WU JINXIANG, ZHI XIAOHENG
• Format: Patent
• Language: Chinese; English
• Published: 12.11.2008
• Subjects: BLASTING; CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE ORHEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS; DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION; HEAT EXCHANGE IN GENERAL; HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS,IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT; HEATING; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

Disclosed is a heavy-fouling type high efficient heat-transfer device with a helical flow channel structure, which comprises a sewage heat exchanger that can be a serpentine type heat exchanger immerged in a clean water groove and also can be a jacketed heat exchanger with a serpentine pipe; the horizontal segments of the whole helical flow channel, a sand distributing pipe and a water inlet pipeline and a water return pipeline are provided with helical lines; the helical line is a convective heat transfer intensifying component when in normal running and a liquid rotary fluidization generator when cleaning the fouling; the evenness of the fouling cleaning of the upper half circle, the lower half circle, the inner half circle and outer half circle is realized when a sewage flow velocity is over 0.5m/s and the sedimentation of the particles does not happen and the blockage is avoided; the inner wall of the jacket is also a heat-transfer surface; a circulation groove for the fluidization cleaning of the particl