Semi-welded plate heat exchanger

• Main Authors: ZHAN FUCAI, FAN XIUXIAN, XIAN CHUANPING, LI JINGCAI, JIANG YING, ZHANG LI, ZHANG SHUMIN
• Format: Patent
• Language: Chinese; English
• Published: 28.11.2012
• Subjects: BLASTING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; 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; MACHINE TOOLS; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WEAPONS; WELDING; WORKING BY LASER BEAM

The invention relates to a semi-welded plate heat exchanger which comprises a fixed clamping plate, a movable pressing plate, an upper guide rod, a lower guide rod, a supporting column, semi-welded plate pairs, sealing gaskets and a clamping bolt pair. The fixed clamping plate, the movable pressing plate, the upper guide rod, the lower guide rod and the supporting column form the frame of the heat exchanger. A plurality of semi-welded plate pairs are assembled by the sealing gaskets to form a plate which is arranged between the fixed clamping plate and the movable pressing plate and fixed by the clamping bolt pair. A plurality of semi-welded plate pairs at the plate are sealed by the sealing gaskets. Meanwhile, the sealing position of a plate A and a plate B of the semi-welded plate pairs adopts the structure of two-sided laser welding, so as to effectively overcome the deformation of the plate pairs during welding and eliminate the deformation stress during welding. The heat exchanger has the advantages of s