Plate type heat exchanger formed by fully welding square plates via laser

Abstract

The invention relates to the technical field of energy conversion devices and particularly relates to a plate type heat exchanger formed by fully welding square plates via laser. The plate type heat exchanger comprises a heat exchanger main body and a base arranged at the bottom of the heat exchanger main body, wherein side plates are arranged on four sides of the heat exchanger main body; fastening cover plates are arranged at the upper end and the lower end of the heat exchanger main body; fastening support posts are arranged at four edges of the heat exchanger main body; rotation shafts are arranged at the upper ends and the lower ends of the fastening support posts; the heat exchanger main body is formed by a heat exchange sheet and wide-back sawtooth plates arranged at two ends of the heat exchange sheet; wave trough bulges and wave peak grooves are uniformly distributed on the heat exchange sheet; bending angles are formed in ends, spliced with the wide-back sawtooth plates; plane extending sides are arranged at two ends of the heat exchange plate. According to the plate type heat exchanger, a structure with four dismountable sides is used together with the rotation shafts, so that the plate type heat exchanger can be easily opened; the requirement for irregularly washing the plate type heat exchanger under the working condition that the channel is easily plugged by unclean media with medium-insoluble substances or solid particles easily precipitated in the heat exchange process can be easily met; the maintenance cost of the plate type heat exchanger can be reduced.

Description

technical field [0001] The invention relates to the technical field of energy conversion equipment, in particular to a square plate laser fully welded plate heat exchanger. Background technique [0002] The welding method of the main body of the existing heat exchanger is mostly manual welding. The welding quality of the product is directly related to the technology of the workers. It is easy to produce thermal deformation, metallographic changes and severe segregation; the first side edge and the second side edge are bent relative to the main body of the plate during the welding process of the plate, and the ends after bending the two Through welding connection, on the one hand, the structure requires high manufacturing precision of the plate itself, and on the other hand, it also requires high welding precision, which leads to the disadvantages of poor manufacturing process and high manufacturing cost; most of the plates simply use In the way of alternate combination of c...

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Problems solved by technology

[0002] The welding method of the main body of the existing heat exchanger is mostly manual welding. The welding quality of the product is directly related to the technology of the workers. It is easy to produce thermal deformation, metallographic changes and severe segregation; the first side edge and the second side edge are bent relative to the main body of the plate during the welding process of the plate, and the ends after bending the two Through welding connection, on the one hand, the structure requires high manufacturing precision of the plate itself, and on the other hand, it also requires high welding precision, which leads to the disadvantages of poor manufacturing process and high manufacturing cost; most of the plates simply use In the way of alternate combination of crests and troughs, the strength of the diagonal direction of the plate relative to the extension surface of the crests and troughs is relatively high, but the directional rigidity of the corrugated structure in the transverse direction is very small; in addition, due to the structure of the plate shape, some welding Surfaces are superimposed on each other or interfere with other parts, so that if this part leaks, this part of the flow channel can only be blocked. For the welding of special materials, this equipment is almost scrapped.

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