Spiral heat exchange pipe

Abstract

The invention relates to a spiral heat exchange pipe, which comprises an inner pipe and an outer pipe, the inner pipe is of a lotus root-like spiral pipe and consists of a plurality of lotus root-like cavities and pores, and the lotus root-like cavities and the pores are of an alternatively distributed structure and formed by integrally welding or die-casting; partial bulged parts of the lotus root-like cavities on the inner pipe and the inner wall of the outer pipe are in interference fit connection and form a sealing surface, a spiral structure exists between partial concave parts of the lotus root-like cavities on the inner pipe and the inner wall of the outer pipe and forms a spiral body, therefore, a structure that the inner pipe is wrapped by the outer pipe is formed; a thermal insulation layer wraps the outer wall of the outer pipe and the outer layer of the thermal insulation layer is wrapped by a surface layer; central positions of the two lotus root-like cavities on the head and tail of the inner pipe are provided with an inner pipe inlet and an inner pipe outlet respectively; the pipe wall of the outer pipe is provided with an outer pipe inlet and an outer pipe outlet. The spiral heat exchange pipe has the beneficial effects: the spiral heat exchange pipe has the advantages of being uniformly heated, high in rate of heat exchange and wide in application fields.

Description

technical field [0001] The invention belongs to the technical field of heat exchange, in particular to a spiral heat exchange tube. Background technique [0002] The heat exchange tube is mainly used in equipment that transfers part of the heat of the hot fluid to the cold fluid, and the fluid flows through the heat exchange tube for heat exchange. Heat exchangers are common equipment in chemical industry, petroleum, power, food and many other industrial sectors, and play an important role in production. An important part of the heat exchanger is the heat exchange tube, and the heat exchange effect of the heat exchange tube is also an important guarantee for the performance of the heat exchanger. In chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators, etc., and are more widely used. [0003] There are many types of existing enhanced heat exchangers, such as: spiral tube heat exchangers, corrugated tube heat exchangers, etc., due to...

AI Technical Summary

Problems solved by technology

[0003] There are many types of existing enhanced heat exchangers, such as: spiral tube heat exchangers, corrugated tube heat exchangers, etc., due to structural defects, it is impossible to achieve heat transfer enhancement on both sides at the same time, and maximize the increase in unit volume. The heat exchange capacity of the heat exchanger limits its application in the field of products with high heat exchange requirements per unit volume

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