Multi-spiral-path chasing

Abstract

A spiral plate heat exchanger with multiple spiral channel consists of shell, spiral body, sealing, outlet and inlet . The said spiral body is prepared by applying star central division plate and multiple concentric spiral plates in equal number to branching ends of star central division plate , setting multiple distance columns or distance blocks arranged in interval on one side surface of each spiral plate for forming multiple spiral channels to let heat exchanging fluid flow through .

Description

Technical field [0001] The invention relates to a spiral plate heat exchanger, in particular to a multi-spiral channel spiral plate heat exchanger with at least three spiral channels. Background technique [0002] The well-known spiral plate heat exchanger in the prior art is mainly composed of four parts: shell, spiral body, seal and inlet and outlet. The specific structure varies with different types, but in various types of spiral plate heat The spiral body of the heating element is composed of two rolled concentric spiral metal plates, that is, the spiral plate and the central partition. The inner ends of the two spiral plates are respectively welded to the two ends of the central partition. One side surface of the spiral plate is provided with a plurality of spaced spaced columns or spaced bubbles to ensure the channel spacing between the spiral plates. Cold and hot fluids flow on both sides of the spiral plate and exchange heat through the spiral plate. , the end face...

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Problems solved by technology

[0006] As a pressure vessel, since the known spiral plate heat exchanger adopts a metal plate rolling structure with one channel for fluid, the fluid pressure of the innermost ring and the outermost ring of the channel is not much different, and the circumferential stress generated by the fluid pressure The maximum value occurs at the outermost end of the spiral plate. This is because the circumferential stress is proportional to the diameter of the location. Therefore, for strength considerations, the outer diameter of the spiral plate heat exchanger is usually limited. In the geometry of the spiral body Among the dimensions, the width of the spiral channel is related to the fluid capacity, and the length of the spiral plate is related to the heat exchange area. Increasing the width of the spiral channel can increase the fluid flow cross-section, increase the flow rate of the heat exchange fluid, and further improve the fluid capacity and handling capacity of the heat exchanger. Capacity, while increasing the leng

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