Self-cleaning enhanced heat-transfer magnetic suspension spiral twisted tape in heat-transfer tube

Abstract

The invention relates to a magnetic suspension spiral twisted tape which comprises a spiral twisted tape and an axial locating device, wherein, the axial locating device is composed of a support frame and a magnet locating device; the magnet locating device is composed of a central conical magnet and an external conical sleeve magnet; the support frame is fixedly arranged on the liquid-inlet end of a heat-transfer tube; the external conical sleeve magnet is fixed with the support frame; the polarity of the central conical magnet is the same as that of the external conical sleeve magnet; one end of the spiral twisted tape is equipped with a pivot, and the pivot passes through the support frame and the external conical sleeve magnet; and the central conical magnet is fixed on the pivot. The magnetic suspension spiral twisted tape has the advantages that by adopting a magnetic suspension locating mode, the problem of severe wear caused by great contact force at a locating position of a liquid inlet is solved, and the service life of an axial locating element of the spiral twisted tape is prolonged; by utilizing a reinforced framework axis core, the strength of the spiral twisted tape can be enhanced; by means of a guide structure, the scraping action of the spiral twisted tape on a tube wall is reduced; and by means of a flow guide structure, fluid flow is further disturbed, the radial flow intensity and turbulent flow intensity of fluid are enhanced, and convective heat transfer is strengthened.

Description

technical field [0001] The invention relates to an interpolation element used in heat transfer equipment such as shell-and-tube heat exchangers, heat exchange reactors, etc. Powered heat transfer tubes with self-cleaning twisted ribbons for enhanced heat transfer. Background technique [0002] In thermal power, nuclear power, petroleum, chemical industry, metallurgy, food, pharmaceutical, light industry, ship power and aerospace and other fields, a large number of heat transfer equipment such as heat exchangers and heat exchange reactors are used, but the inner wall of the heat transfer pipe The problem of fouling and fouling is ubiquitous, which reduces the heat transfer performance and increases the resistance of fluid transportation, and even causes pipeline blockage; the fouling on the pipe wall will not only bring the safety hazard of corrosion and leakage, but also cause the heat transfer efficiency to decrease significantly. Serious energy waste is caused, so it is u...

AI Technical Summary

Problems solved by technology

The main disadvantages of the spiral twisted belt are: 1) the life of the end rotating bearing is short; 2) the spiral twisted belt has serious scraping on the inner wall of the heat transfer tube; 3) a large driving torque is required during the working process; 4) the field synergistic strengthening The heat transfer effect is not significant

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