Novel spiral-twisted-wrapped-tube heat exchanger

Abstract

The invention provides a novel spiral-twisted-wrapped-tube heat exchanger which is mainly composed of a tube box, a tube plate, a shell, a heat exchange tube, a core cylinder and other parts, wherein the heat exchange tube is a novel spiral twisted wrapped tube. The novel spiral twisted wrapped tube comprises an inlet section and a wrapped twisted section, wherein the inlet section is the combination of a flat tube pressed from a circular tube and a twisted tube twisted from a flat tube; the wrapped twisted section is formed by twisting and wrapping a flat tube pressed from a circular tube; and the other parts of the heat exchanger are still the structural styles in a common spiral-wrapped-tube heat exchanger. The inlet section and twisted wrapped section in the heat exchange tube have a smooth transition, are made from the same material and have the same wall thickness. According to the novel spiral-twisted-wrapped-tube heat exchanger, the working medium has the advantages of high turbulence degree, high heat transfer coefficient and compact structure when performing flow and heat exchange in the tube. The novel spiral-twisted-wrapped-tube heat exchanger has favorable universality with the parts of the common shell-and-tube heat exchanger, and thus, has wide practical application value.

Description

technical field [0001] The invention relates to a heat exchange tube in a novel helically twisted and wound tube heat exchanger, which belongs to the technical field of enhanced heat exchange. Background technique [0002] Heat exchangers are widely used in all walks of life in the national economy, and are one of the most common equipment in energy, petroleum, chemical, metallurgy, power, light industry, food and even aerospace industries. Recycling important equipment to save energy dissipation; At present, spiral wound tube heat exchangers are widely used because they can realize simultaneous heat exchange of multiple fluids and high operating pressure, and the internal heat exchange tubes in engineering applications use spirally wound bare tubes; The flow of the working medium in the helically wound light tube is relatively uniform, which makes the turbulence effect in the heat exchange tube poor, resulting in an inconspicuous heat exchange effect, which is not conducive...

AI Technical Summary

Problems solved by technology

[0002] Heat exchangers are widely used in all walks of life in the national economy, and are one of the most common equipment in energy, petroleum, chemical, metallurgy, power, light industry, food and even aerospace industries. Recycling important equipment to save energy dissipation; At present, spiral wound tube heat exchangers are widely used because they can realize simultaneous heat exchange of multiple fluids and high operating pressure, and the internal heat exchange tubes in engineering applications use spirally wound bare tubes; The flow of the working medium in the helically wound light tube is relatively uniform, which makes the turbulence effect in the heat exchange tube poor, resulting in an inconspicuous heat exchange effect, which is not conducive to the improvement of heat exchange efficiency; twisted tube heat exchangers have now been widely used abroad. The application is still in the research stage in China. It enhances the heat transfer due to the enhanced turbulence intensity. Now the helically twisted winding tube obtained by combining the above two types of tubes has both the advantages of both.

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