Preparation method for heat exchange tube used for extracting temperature of sewage

Abstract

The invention relates to a preparation method for a heat exchange tube used for extracting temperature of sewage. The preparation method is characterized by comprising the following steps: (1) loading a stainless steel coiled plate utilized as a raw material by using an uncoiling machine; (2) guiding the plate from the uncoiling machine to enter into a plate leveling machine and leveling the plate; (3) carrying out roll forming the plate from the plate leveling machine six times and then forming; (4) guiding the plate, which is subjected to roll forming, to enter into a cutting machine, and then cutting the plate according to a technical demand; (5) performing the forming combination prior to roll-welding on a semi-finished product of the heat exchange tube, which is formed in the step (4), by a spot-welding machine according to the technical demand; (6) performing rolling grinding welding on the welding part of the heat exchange tube from the step (5) by a roll grinding welding machine according to the technical demand; and (7) utilizing a reshaping machine to reshape the heat exchange tube which is formed after being welded in the step (6). The heat exchange tube prepared by using the preparation method has the thickness of 1.5-2 millimeters and has the characteristics that the tube wall is thin, the heat exchange effect is good, the welding can be limitlessly prolonged according to an onsite condition, the thickness of welding spots is uniform, and the mounting and maintaining are convenient.

Description

technical field [0001] The invention relates to a method for preparing a heat exchange tube, in particular to a method for preparing a heat exchange tube for extracting the temperature of sewage, which is an improvement to the existing method for preparing a heat exchange tube for heat exchange using the temperature of urban sewage . Background technique [0002] Low-carbon economy is an economic model based on low energy consumption, low pollution, and low emissions. It is another major progress of human society after agricultural civilization and industrial civilization. The essence of low-carbon economy is the efficient use of energy. [0003] At present, the shortage of water resources has become an important factor restricting the sustainable development of cities. Urban sewage recycling is an important way to alleviate the water shortage crisis. In particular, the temperature of urban sewage is relatively stable, which is an ideal and abundant heat source. The heat s...

AI Technical Summary

Problems solved by technology

However, the heat exchange tube preparation process in the prior art is that the steel strip between the seamless steel tube and the tube is welded to complete the connection between the tube and the tube. Not only is the processing difficult, the processing cycle is long, and the welding technology requirements are very high. The thickness of the solder joints is not uniform, which is easy to cause leakage of the heat exchange tube, and has the following disadvantages: the thickness of the tube wall affects the heat transfer; the energy saving coefficient is low; the heat exchange temperature difference is large; the heat exchange tube is difficult to manufacture; the maintenance is difficult

According to the applicant's search, there is no domestic report on the use of roll forming and rolling rolling welding processes to prepare heat exchange tubes.