Novel spiral winding pipe heat exchanger

Abstract

The invention provides a novel spiral winding pipe heat exchanger. The novel spiral winding pipe heat exchanger consists of such parts as a pipe box, a pipe plate, a shell, a heat exchange pipe and a core cylinder, wherein the heat exchange pipe is a novel spiral winding pipe; the novel heat exchange pipe comprises two parts of an inlet section and a winding section; the inlet section is a polishing pipe; the winding section is formed by alternately connecting a spiral winding polishing pipe section with an arc section; other parts of the heat exchanger are still structural types in a general spiral winding pipe heat exchanger; the polishing pipe section and the arc section in the winding section of the heat exchange pipe are smoothly transited, and are the same in material and wall thickness; and a ratio of a diameter D of the arc section to a length L of the straight pipe section is greater than 2(D / L greater than 2). The novel spiral winding pipe heat exchanger is high in turbulent degree, high in heat exchange coefficient, not easy to scale and compact in structure when a working medium flows in the pipe for heat exchange, and is better in development prospect and high in actual application value.

Description

technical field [0001] The invention relates to a heat exchange tube in a spirally wound tube heat exchanger, belonging 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. Recycle vital equipment to conserve energy dissipation. At present, helically wound tube heat exchangers are widely used because they can realize simultaneous heat exchange of multiple fluids and have high operating pressure. In engineering applications, the internal heat exchange tubes all use helically wound smooth tubes. The flow of the working medium in the spiral wound light tube is relatively uniform, which makes the turbulence effect in the heat exchange tube poor, resulting in insignificant heat transfer effect, which is not conducive to the improvemen...

AI Technical Summary

Problems solved by technology

The flow of the working medium in the spiral wound light tube is relatively uniform, which makes the turbulence effect in the heat exchange tube poor, resulting in insignificant heat transfer effect, which is not conducive to the improvement of heat exchange efficiency; the spiral wound tube heat exchanger generally has a long operating cycle, and impurities in the fluid Such as dirt deposition, easy to block, affect the efficiency of the equipment; especially for large-scale spiral wound tube heat exchangers, when the heat exchange tubes are blocked, it is difficult to clean the tube bundles, which not only affects the heat exchange effect, but also may affect the operation of the entire process

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