Opposite-rotation-direction combined rotor in heat exchange tube

Abstract

The invention relates to an opposite-rotation-direction combined rotor in a heat exchange tube. The rotor is formed by a shearing rotor and a turbulent flow rotor. The shearing rotor is formed by a shearing rotor hollow shaft and shearing blades. The turbulent flow rotor is formed by a turbulent flow blade hollow shaft and turbulent flow blades. Heat-transfer fluids in the heat exchange tube generates axial force to the opposite-rotation-direction combined rotor when the fluid flows, and the rotor rotates, exerts reactive force on the fluids, and enables the fluids to from mixed flow. The rotation direction of the shearing rotor and the rotation direction of the turbulent flow rotor are opposite, and due to the opposite rotation directions, the shearing rotor rotates, damages boundary layers of the fluids, thins the thickness of the boundary layers, and generates a slight scratching function to the inner wall of the heat exchange tube so as to achieve anti-scale and scale removing effects. The turbulent flow rotor disturbs the center fluid, and strengths tangential flow of the center fluid. The rotation direction of the shearing rotor and the rotation direction of the turbulent flow rotor are opposite, the fluids on the boundary layers and the center fluid are subjected to the reactive force of the rotor with the opposite direction, the shearing flowing and radial flowing are strengthened, and the reinforced heat exchanging effects are achieved.

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 of low energy consumption and high efficiency of different rotation combined rotor. Background technique [0002] Energy is an important lifeblood of my country's national economic development, and its supply is tight and its utilization efficiency is low. According to the survey, my country has become the world's largest energy consumer. Therefore, energy conservation and emission reduction are crucial to the sustainable development of my country's economy. As an important heat exchange equipment, shell and tube heat exchangers are widely used in petroleum, chemical ...

AI Technical Summary

Problems solved by technology

In recent years, many methods and devices for enhancing heat transfer and anti-scaling and descaling have appeared. The earlier ones include helical coils and coil springs. Research has found that they have a certain effect on enhancing heat exchange and anti-scaling and descaling. Later, the use of fluid to promote The method for realizing online automatic descaling by rotating the spiral bond. The Chinese patents related to the spiral bond are: ZL95236063.2, the patent name is "cleaning device for descaling and anti-scaling in heat transfer tubes"; Heat exchange and automatic descaling device", these devices mainly include a spiral bond and a fixed frame, the spiral bond device plays a certain role in strengthening heat exchange and anti-scaling and descaling, but it also has the following shortcomings: (1) The bond is a As a whole, directly scrape the heat transfer tube and damage the inner wall of the heat transfer tube; (2) When the fluid flows to push the link to rotate, it requires a large driving torque and consumes more fluid kinetic energy; (3) The use of single-end fixed bearings Short life; (4) The field synergy enhanced heat transfer effect generated by the bond is not significant

The above-mentioned rotors are single-rotation single-rotors with a single rotation direction, and the degree of disturbance to the fluid is limited. The enhanced heat transfer and anti-scaling and descaling capabilities of the rotor are limited

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