Taper hole baffle plate structure type shell-and-tube heat exchanger

Abstract

The invention discloses a taper hole baffle plate structure type shell-and-tube heat exchanger, and relates to the technical field of heat exchange. The taper hole baffle plate structure type shell-and-tube heat exchanger comprises at least one taper hole baffle plate, at least one group of heat exchange tube bundles and at least one group of taper reducing holes, the at least one group of heat exchange tube bundles transversely penetrate through the at least one taper hole baffle plate, at least one group of conical reducing holes are formed in any one of the taper hole baffle plates, and theat least one group of taper reducing holes and the at least one group of heat exchange tube bundles are arranged at intervals. According to the technical scheme, fluid on the shell side penetrates through taper holes, small holes in the baffle plates are similar to taper hole nozzles, jet flow can be generated when shell pass fluid passes through the baffle plates, fluid with a certain flow speedwashes the outer walls of the tube bundles, and therefore the turbulence degree of the fluid is increased, a tube wall liquid boundary layer is reduced, heat transfer is effectively enhanced; and theshell pass fluid is longitudinal flow, and therefore in this way, the tube bundles can be effectively supported, induced vibration of the tube bundle fluid is avoided, and impact of the shell pass fluid on the tube bundles is reduced.

Description

technical field [0001] The disclosure of the invention relates to the technical field of heat exchange, in particular to a shell-and-tube heat exchanger with a tapered hole baffle structure. Background technique [0002] Energy is the driving force of industrial development and economic progress, and the material basis of all industrial activities. Efficient use of energy is an important manifestation of the level of industrial modernization. How to save energy and reduce consumption has become a common topic of the whole society. The use of high-efficiency industrial equipment is an important way to save energy and reduce consumption. Heat exchangers are heat exchange equipment that realize the energy exchange of cold and hot fluids in industrial production. They can also recover and reuse waste heat, which can reduce energy consumption. As an important heat exchange equipment, shell and tube heat exchangers are widely used in petrochemical, metallurgical power, energy and...

AI Technical Summary

Problems solved by technology

[0004] (1) The lateral flow of the fluid on the shell side is dominant, and it turns suddenly at the vertical baffle, causing flow resistance, causing a large pressure drop and increasing energy consumption

[0005] (2) There is a flow dead zone in the leeward of the baffle, and there are also leakage flow, side flow, etc., which cannot fully exchange heat and reduce the heat transfer coefficient

[0006] (3) Due to the existence of the flow dead zone, for the working fluid with high impurities, it is easy to scale and reduce the heat exchange efficiency

[0007] (4) Induced vibration is prone to occur when the working fluid flows laterally, thus damaging the heat transfer tube

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