Reinforced heat and mass transfer pipe insert and heat and mass transfer pipe

Abstract

The invention provides a reinforced heat and mass transfer pipe insert and a heat and mass transfer pipe. The insert is a tubular body; the tube wall of the tubular body is composed of a plurality ofalternately arranged near-wall flow guide portions and a central flow guide portion; each near-wall guide portion is an outward-protruding structure arranged in the axial direction of the tubular body; the central flow guide part is an inward-recessed structure arranged in the axial direction of the tubular body; the near-wall flow guide portions and the central flow guide portion are each uniformly provided with flow disturbing holes; and each flow disturbing hole is provided with a flow disturbing plate extending into or out of the tube wall of the tubular body. According to the reinforced heat and mass transfer pipe insert provided by the invention, the near-wall flow guide portions and the central flow guide portion are each provided with the flow disturbing holes and the flow disturbing plate; the near-wall flow guide portions are used for guiding the fluid at the near-wall position of the heat and mass transfer pipe to the center; the center flow guide portion is used for guidingthe fluid from the center of the heat and mass transfer pipe to the near-wall position to generate radial flow disturbance, thereby breaking the laminar flow state inside the heat and mass transfer pipe and improving the heat and mass transfer coefficient.

Description

technical field [0001] The invention relates to the technical field of heat and mass transfer, in particular to a heat and mass transfer enhanced tube insert and a heat and mass transfer pipeline. Background technique [0002] Heat and mass transfer equipment is an important heat and mass transfer equipment in petroleum, chemical, energy, power, metallurgy and other industries. The heat and mass transfer tube is the main heat and mass transfer element of the heat and mass transfer device, and its heat and mass transfer and mass transfer efficiency directly affect the heat and mass transfer effect. [0003] There are generally two types of enhanced heat and mass transfer technologies in tubes: one is the enhanced heat and mass transfer technology based on the surface of heat and mass transfer tubes, such as threaded grooved tubes, corrugated tubes and other special-shaped tubes. The structure disturbs the fluid, destroys the fluid boundary layer near the tube wall, and achie...

AI Technical Summary

Problems solved by technology

The former special-shaped tube is difficult to process, and at the same time, the strength is lower than that of the round tube, and the scope of application is narrow; the latter is difficult to disassemble. Although the turbulence effect is increased, the flow dead zone is still prone to appear in the tube.

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