Welding-free structure of PTFE heat exchanger

Abstract

The invention belongs to the field of heat exchangers, and aims to provide a welding-free structure of a PTFE heat exchanger. According to the technical scheme, the welding-free structure of the PTFEheat exchanger comprises a tube plate and heat exchange tubes penetrating through the tube plate, wherein quick-connection joints are detachably connected between every two adjacent heat exchange tubes, and the connecting positions between the quick-connection joints and the heat exchange tubes are located at the position of the tube plate. The quick-connection joints are adopted to replace a welding structure, so that the influence of high temperature on a material can be effectively reduced, meanwhile, a surface which is in contact with the quick-connection joints and a pipe body in a detachable structure can play a role in improving the connection strength, so that comparing with the welding structure which a connection position has only one welding seam, and when external force acts, the external force can conveniently conduct to all parts of the pipe body and reduces the possibility of local damage so as to achieve the expected load bearing capacity.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to a welding-free structure of a PTFE heat exchanger. Background technique [0002] Heat exchanger is an indispensable equipment to realize heat exchange and transfer in the chemical production process. The existing PTFE heat exchanger is basically assembled by welding. Since the main material of the heat exchanger tube bundle is polytetrafluoroethylene, polytetrafluoroethylene As an inert material, there are problems of difficulty in welding and intense heat in actual operation. [0003] There are two commonly used welding methods at present. One is hot air welding. First, the surface to be adhered is scrubbed and dried with acetone or ethanol solution, and then the surface of the workpiece is grooved, and soluble PTFE electrodes are selected to melt and connect the welding surfaces. ; [0004] Another method is extrusion welding, which presses the two surfaces to be welded against each other,...

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Problems solved by technology

[0005] However, both of the above two welding methods need to heat and melt the material to be welded. The bonding strength of the reshaped weld after hot melting is low, mostly between 50% and 60% of the original strength. load bearing capacity

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