Coal economizer with H-type ribbed tubes

Abstract

The invention discloses a coal economizer with H-type ribbed tubes. The coal economizer aims at improving the use effect to the maximum degree. The coal economizer with the H-type ribbed tubes comprises a shell, end plates, an H-type ribbed tube set, a plain tube set, tube sleeves and a sealing comb-shaped plate, wherein the plain tube set is arranged in the space in the lower portion inside the shell, the H-type ribbed tube set is arranged in the space in the upper portion inside the shell, the H-type ribbed tube set is connected with the plain tube set through an elbow tube, the end plates are used for supporting the H-type ribbed tube set and the plain tube set, the tube sleeves are welded to the end plates, and the sealing comb-shaped plate is welded to the positions of strip-shaped groove openings to prevent smoke leakage. The coal economizer with the H-type ribbed tubes is an upgraded product of an existing plain tube coal economizer and an existing circular spiral ribbed tube coal economizer, and can be widely applied to industrial boiler systems in the efficient and energy-saving technical field.

Description

technical field [0001] The invention relates to a coal economizer in an industrial boiler, in particular to an economizer using H-shaped finned tubes. Background technique [0002] Plain tubes or circular spiral finned tubes are commonly used in medium-capacity industrial boiler economizers. The main advantage of plain tube economizers is that the processing cost is very low, but there are serious wear and tear, no extended heating surface, and poor economy. and other defects; while the circular spiral finned tube has the advantages of relatively simple manufacture, low cost, and more expanded heating surfaces, but it also has the disadvantages of unsatisfactory wear resistance, easy to form dust and difficult to clean. It is necessary to study and design a new structure economizer that can not only retain the advantages of the above two economizers, but also overcome their defects, so as to maximize the use effect of the economizer. Contents of the invention [0003] The...

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Problems solved by technology

[0002] Plain tubes or circular spiral finned tubes are commonly used in medium-capacity industrial boiler economizers. The main advantage of plain tube economizers is that the processing cost is very low, but there are serious wear and tear, no extended heating surface, and poor economy. and other defects; while the circular spiral finned tube has the advantages of relatively simple manufacture, low cost, and more extended heating surface, but there are also defects such as unsatisfactory wear resistance, easy to form dust and difficult to clean

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