Heat exchange tube winding technology for winding tube type heat exchanger tube bundle

Abstract

The invention discloses a heat exchange tube winding technology for a winding tube type heat exchanger tube bundle. The technology comprises the following steps: feeding a liquid which cannot produce any risk to heat exchange tubes in advance, maintaining the pressure, and then winding the heat exchange tubes onto a central cylinder of the tube bundle to overcome the tube flattening phenomenon, wherein the allowances of the ovality of the wound heat exchange tubes are as follows: the external diameter of the I-level tube bundle is not larger than 5% of that of the heat exchange tubes, and the external diameter of the II-level tube bundle is not larger than 10% of that of the heat exchange tubes. The winding technology overcomes the flattening phenomenon of the current winding technology, so as to ensure the product quality and the heat exchange performance of the winding tube type heat exchanger tube bundle.

Description

technical field [0001] The invention relates to a heat exchange tube winding process, in particular to a heat exchange tube winding process for winding tube bundles of tube heat exchangers. Background technique [0002] During the winding process of the heat exchange tubes of various wound tube heat exchanger tube bundles, since the heat exchange tubes are bent from a straight state after being wound, the heat exchange tubes are often flattened and become flat, especially when the wound When the radius of curvature of the pipe is small, or when the wall thickness of the pipe is thin, the flattening phenomenon is more serious. The heat exchange tube in the flat state seriously reduces the heat transfer coefficient of the heat exchanger and increases the pressure drop of the heat exchanger; at the same time, because the heat exchange tube is in a flat state, there is a dimensional error, and the outer diameter of the tube bundle cannot be adjusted when winding the tube bundle....

AI Technical Summary

Problems solved by technology

The heat exchange tube in the flat state seriously reduces the heat transfer coefficient of the heat exchanger and increases the pressure drop of the heat exchanger; at the same time, because the heat exchange tube is in a flat state, there is a dimensional error, and the outer diameter of the tube bundle cannot be adjusted when winding the tube bundle. Control makes it difficult for the tube bundle to meet the drawing requirements, which seriously affects the assembly quality of the heat exchanger

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