Reverse flow type plate heat exchanger with diversion plate set welded

Abstract

The invention discloses a reverse flow type plate heat exchanger with diversion plates welded in the technical field of petrochemical industry heat exchangers. The reverse flow type plate heat exchanger comprises heat transfer plates, sealing gaskets, a fixed pressing plate, a movable pressing plate, pressing bolts and nuts, an upper guide rod and a lower guide rod. The reverse flow type plate heat exchanger with the diversion plates welded is characterized in that the diversion area of the heat transfer plates is a flat plate, a diversion plate set is welded in the diversion area of the heattransfer plates, and the shape of the diversion plate set is the same with that of the diversion area of the heat transfer plates. By the adoption of the reverse flow type plate heat exchanger with the diversion plates welded, the diversion area of the heat transfer plates is the flat plate, concave or convex blocks are not pressed, and the diversion plates are welded in the diversion area of theplates. The reverse flow type plate heat exchanger has the beneficial effects that the diversion effect of the diversion plates at the inlet is good, fluid distribution is uniform, a heat exchange dead area of the plate heat exchanger can be effectively reduced, and the heat exchange efficiency is improved; and the thickness of the diversion plates is small, the occupied circulation area is small,and the pressure of the diversion area at the inlet is low.

Description

technical field [0001] The invention belongs to the technical field of plate heat exchangers in petrochemical plants, and in particular relates to a counterflow plate heat exchanger welded with guide fins. Background technique [0002] As a compact and efficient heat exchange equipment, the plate heat exchanger has the advantages of compact and light structure, good heat transfer effect, large logarithmic average temperature difference, strong interchangeability, flexible disassembly, convenient maintenance and cleaning, and low operating costs. , It is widely used in oil refining units and has played a good economic benefit. The detachable plate heat exchanger is assembled from a series of parallel thin metal plates with corrugated surfaces, rubber pads, compression plates, compression bolts, brackets and other components. [0003] Metal corrugated plates are the most important heat exchange elements of plate heat exchangers. It is necessary to ensure that their design and...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a counter-flow plate heat exchanger welded with a deflector plate, aiming at the technical problems of uneven distribution of fluid in the diversion area and poor diversion effect of the detachable counter-flow plate heat exchanger in the prior art

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