Inclined-fin-tube heat exchanger

Abstract

The invention discloses an inclined-fin-tube heat exchanger. The inclined-fin-tube heat exchanger comprises a heat exchanger shell, tube sheets and a plurality of inclined fin tubes, wherein tube internal medium inlets and tube internal medium outlets are formed in the sides of the tube sheets respectively, a tube external medium inlet and a tube external medium outlet are formed in the two opposite sides of the heat exchanger shell respectively, the inclined fin tubes are arranged in the mode of being inclined from the tube external medium inlet to the tube external medium outlet and / or in the mode of being inclined from the tube external medium outlet to the tube external medium inlet, and the flowing direction of tube external media and the flowing direction of tube internal media are in inclined intersection; or, the inclined fin tubes are set to be of a bent fin tube structure, and the flowing direction of the tube external media and the flowing direction of the tube internal media are in partially inclined intersection and partially perpendicular intersection; or, an inclined angle is formed between the flowing direction of the tube external media and the horizontal plane, and an inclined angle is formed between the flowing direction of the tube internal media and the vertical plane. Compared with the prior art, the inclined-fin-tube heat exchanger has the advantages that the heat exchange effect and the scale prevention effect are good, the frequency of operation maintenance of fin ash blowing through shutdown of the heat exchanger can be reduced, or the operation maintenance of fin ash blowing through shutdown of the heat exchanger can be avoided; the structure is simple, and the service life of the inclined fin tubes can be prolonged.

Description

technical field [0001] The application relates to the technical field of heat exchange equipment in air conditioning, chemical industry, petrochemical industry, electric power energy, and iron and steel smelting industries, and in particular to an oblique fin tube heat exchanger. Background technique [0002] Traditional finned tube heat exchangers include various heating furnaces, finned tube preheaters, and air coolers. This type of heat exchanger is widely used, its design and manufacturing process is mature, and its safety is high. It is a key energy-saving equipment in heat exchange equipment. [0003] (1) The structure and function of the traditional finned tube heat exchanger. [0004] For the finned tube heat exchangers of the tube heat exchanger type and the air cooler type, a plurality of finned tubes of different numbers are arranged together, and the two ends of the finned tubes are respectively inserted into the tube holes of the tube sheet and connected with t...

AI Technical Summary

Problems solved by technology

However, since the traditional fins are basically installed perpendicular to the surface of the base tube, when the finned tube heat exchanger is installed vertically, the plane of the fins that is basically perpendicular to the surface of the base tube becomes a direction close to the horizontal plane. During long-term operation, the dust in the flue gas outside the tube or the dust in the air accumulates on the plane of the fins, forming dirt, which is difficult to remove, and forms a thermal resistance between the medium in the tube and the flue gas outside the tube, affecting heat exchange efficiency

The above problems occur when the finned tubes in the finned tube heat exchanger are installed vertically. If the traditional horizontal installation mode is used, the above problems do not exist, or the above problems are very small, and it is easy to wash them with a soot blower or jet water However, for the vertical installation mode, there will be a big problem that needs to be solved urgently

[0010] In summary, the fin structure of the above-mentioned finned tube heat exchanger and the structural design of the finned tube heat exchanger are the most important and critical links to avoid dust accumulation and fouling. If the innovative fin structure and The structure of the finned tube heat exchanger is to prevent the existing technical problems, which often cause the heat exchanger to fail to achieve the design effect

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