Diffusion welding auxiliary device of plate heat exchanger

Abstract

The invention relates to the technical field of diffusion welding auxiliary equipment of plate heat exchangers, in particular to a diffusion welding auxiliary device of a plate heat exchanger. The diffusion welding auxiliary device is characterized in that the auxiliary device is composed of a diffusion welding base, guide columns, limiting supports and a pressure application upper plate; a strip-shaped groove is formed in the diffusion welding base; fixed screw holes are formed in the two sides of the bottom of the strip-shaped groove; the limiting supports symmetrically arranged and used forclamping the plate heat exchanger are arranged above the fixed screw holes in the two sides of the strip-shaped groove; each limiting support is composed of a limiting plate and limiting inserting strips inserted into heat exchange clearances of the plate heat exchanger, wherein the limiting inserting strips are arranged on the side face of the limiting plate; bolt penetrating holes correspondingto the positions of the corresponding fixed screw holes are formed in the plate face of each limiting plate; a fixed bolt is arranged in each bolt penetrating hole; the pressure application upper plate for covering the strip-shaped groove is arranged above the diffusion welding base; locating holes are formed in the pressure application upper plate; and the guide columns are arranged in the locating holes. The diffusion welding auxiliary device has the advantages that the structure is simple; manufacturing is convenient; the product percent of pass is high; the reliability of the heat exchanger is improved; and time and labor are saved.

Description

technical field [0001] The invention relates to the technical field of diffusion welding auxiliary equipment for plate heat exchangers, in particular to a diffusion welding auxiliary for plate heat exchangers with simple structure, convenient manufacture, high product qualification rate, improved reliability of heat exchangers, and time-saving and labor-saving. device. Background technique [0002] As we all know, the formed plate heat exchanger is a new type of diffusion welded compact heat exchanger. The plate heat exchanger is generally composed of a heat exchanger bottom plate, a vertical plate and an upper cover plate. There is a vertical plate, one end of the vertical plate is vertically connected to the bottom plate of the heat exchanger, and the other end of the vertical plate is vertically connected to the upper cover plate, and a heat exchange gap is formed between the vertical plate, the bottom plate of the heat exchanger, and the upper cover plate. The heat tran...

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Problems solved by technology

[0002] As we all know, the formed plate heat exchanger is a new type of diffusion welded compact heat exchanger. The plate heat exchanger is generally composed of a heat exchanger bottom plate, a vertical plate and an upper cover plate. There is a vertical plate, one end of the vertical plate is vertically connected to the bottom plate of the heat exchanger, and the other end of the vertical plate is vertically connected to the upper cover plate, and a heat exchange gap is formed between the vertical plate, the bottom plate of the heat exchanger, and the upper cover plate. The heat transfer efficiency of the heat exchanger is higher than that of ordinary plate heat exchangers, and the steps of argon arc welding are eliminated, saving time and effort, but due to the general diffusion welding process, the pressure direction and heat exchanger deformation during the pressure application process The control of the product is more difficult, so the qualified rate of the product is relatively low

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