Pinfin drivepipe type reinforced heat transfer element

Abstract

The invention aims at providing a pinfin drivepipe type reinforced heat transfer element, which comprises two two-way adapter connectors, a groove drivepipe, a pinfin pipe; the two two-way adapter connectors are respectively connected with the two ends of the pinfin pipe; the pinfin pipe is provided with an inner channel; the parts of the two-way adapter connectors connected with the pinfin pipe are inserted in the inner channel of the pinfin pipe; the groove drivepipe is externally sleeved on the pinfin pipe; each of the two-way adapter connectors comprises a first channel and a second channel; the first channel is communicated with a ring gap formed by the pinfin pipe and the groove drivepipe; and the second channel is communicated with the inner channel of the pinfin pipe. The pinfin drivepipe type reinforced heat transfer element provided by the invention has the advantages of good heat transfer property, reasonable structure, no bypass leakage flow and long service life and being safe and reliable.

Description

technical field [0001] The invention relates to a heat transfer element in the technical field of heat transfer enhancement. Background technique [0002] There are three main ways to enhance heat transfer: increase the average temperature difference to enhance heat transfer, increase the heat transfer area per unit volume to enhance heat transfer, and increase the convective heat transfer coefficient to enhance heat transfer. Among them, the method of increasing the average temperature difference is mainly realized by changing the inlet temperature of the cold and hot fluids and the fluid flow mode, but this method is usually not easy to realize due to production requirements and economic constraints, so increasing the heat transfer area per unit volume and improving convection conversion Thermal coefficient is the main research direction of heat transfer enhancement. Scholars at home and abroad have done a lot of research on enhanced heat transfer technology, invented man...

AI Technical Summary

Problems solved by technology

Scholars at home and abroad have done a lot of research on enhanced heat transfer technology, invented many enhanced heat transfer elements, and made great contributions to thermal technology. The patent document named "a pin-fin tube" (patent application number: 96209163.4 ), a pin-fin tube is provided, the base tube has many long and short round rod-shaped pin-fins, which are arranged in a staggered or sequential manner along the circumferential and longitudinal directions at equal intervals, and are welded to the base tube at an oblique angle or vertically On the surface, it can strongly disturb the fluid and increase the turbulence of the fluid. However, there is a contact thermal resistance between the pin-fin and the base tube on this enhanced heat transfer element, which has an adverse effect on heat transfer.

The patent application document with the patent number 00220040.6 provides a "pin-fin tube heat exchanger", in which the new pin-fin tube mentioned is made of a light tube after cutting, eliminating the gap between the pin-fin and the base tube. welding contact thermal resistance, but when it is made into a heat exchanger, there are problems such as inconvenient installation and uneven flow distribution

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