Low driving rotor with turbulence core and in heat exchange tube

Abstract

The invention relates to a low driving rotor with a turbulence core and in a heat exchange tube. The rotor is mainly composed of a hollow shaft, helical blades and the turbulence core, the outer diameter of each helical blade is smaller than the inner diameter of the heat exchange tube, the helical blades are smooth in surface, provided with hollow structures respectively and helically shaped around the hollow shaft, and the turbulence core is arranged in the hollow portions of the helical blades and consists of a plurality of turbulence strips distributed around the hollow shaft. The edge, firstly contacting with water flow, of the helical blades is chamfered or filleted; upstream faces of the blades drive the rotor to rotate under the action of fluid driving, fluid is enabled to generate centrifugal movement and is thrown to the wall of the heat exchange tube, radial flow of the heat transfer fluid is enhanced, and impacts on a laminar boundary layer of the fluid nearby the tube wall are generated to destroy the laminar boundary layer of the fluid; the turbulence core rotates with the blades, when small resistance is increased, turbulence is performed on center fluid in the tube to enable the center fluid to be replaced fully, and further effects of scale prevention, descaling and strengthened heat transfer are realized.

Description

technical field [0001] The invention relates to an interpolation element for enhancing heat transfer and anti-fouling and decontamination in heat exchange tubes used in shell-and-tube heat exchangers, heat exchange reactors and other equipment, in particular to an interpolation element that uses the heat transfer fluid inside the heat exchange tube as the Power, self-cleaning and enhanced heat transfer function, low energy consumption and high efficiency heat exchange tube with spoiler core and low drive rotor. Background technique [0002] Energy saving and emission reduction is a key technology that the whole world attaches great importance to. It is applied to many heat exchangers in many fields such as petroleum, chemical industry, thermal power, nuclear power, metallurgy, light industry, aviation devices and marine vehicles, among which the most Shell-and-tube heat exchangers are widely used, but there are generally deposits of dirt on the inner walls of these heat exch...

AI Technical Summary

Problems solved by technology

To sum up, the spiral bond has the following disadvantages: (1) The bond is a whole, which directly scratches the heat transfer tube and damages the inner wall of the heat transfer tube; (2) When the fluid flows to push the bond to rotate, a large driving torque is required. Consume more fluid kinetic energy; (3) The service life of the bearing used for single-end fixing is short; (4) The field synergy enhanced heat transfer effect generated by the bond is not significant

But the disadvantage is that when the element works in the heat exchange tube, it has a more obvious disturbing effect on the fluid near the tube wall. Since the middle part is hollowed out, the disturbing effect on the fluid in the center of the tube is not obvious, and the heat exchange effect needs to be improved.

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