Folding pressure-resistant multipass biaxial flow screw plate heat exchanger

Abstract

A detachable pressure-tolerant spiral plate type heat exchanger with multi-channel dual axial flows is composed of hat-transfering basic plate, central pipe, gap fixating device, sealing strip, main partition, the partition between channels, casing, wound layer, closure heads, flanges and fluid inlet and outlet tube. It features that the cold fluid and hot fluid are axially flowing back and forth in respective channels between two closure heads, resulting in large heat exchanging area.

Description

technical field [0001] The invention belongs to fluid heat exchange equipment. Background technique [0002] Since the patent of the spiral plate heat exchanger was implemented in 1930, it has made great progress due to its advantages such as high heat transfer coefficient, plate instead of tube, compact structure, simple manufacturing, less machining, and low cost. However, because it also has the following disadvantages: the operating pressure is not high, the processing capacity is small, and the maintenance is difficult... . make its application limited. There are four types of traditional spiral plate heat exchangers according to the flow direction of the fluid (see the table above). And " multi-circle heat exchanger " invented by the applicant, (ZL95215477.3), its cold, hot two fluids have all adopted axial flow, have concurrently single-circle radial flow. In order to distinguish it from the traditional spiral plate heat exchanger, it can be named Type IV spiral pl...

AI Technical Summary

Problems solved by technology

However, because it also has the following disadvantages: low operating pressure, small processing capacity, difficult maintenance...

make its application limited

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