Flue structure

Abstract

The invention discloses a flue structure and belongs to the field of steel structures. The flue structure is characterized in that four flue walls are formed by connecting multiple support panels; a plurality of steel frame strips are fixed on the outer wall face of each flue wall along a smoke flowing direction at intervals of a first preset distance; the steel frame strips on the adjacent outerwall faces are connected; a plurality of slats are fixed between the adjacent two steel frame strips along the smoke flowing direction at intervals of a second preset distance; a plurality of second slats are fixed in a direction perpendicular to the smoke flowing direction at intervals of a third preset distance; a plurality of inner support rods are arranged in the flue structure; a steel framestrip is fixed correspondingly to each outer wall face at the end butting position of each inner support rod. As the first slats and the second slats replace part of the steel frame strips, fewer steel frame strips and fewer corresponding inner support rods can be used, operation and maintenance costs are reduced, and smoke flowing resistance is decreased.

Description

technical field [0001] The invention relates to the field of steel structures, in particular to a flue structure. Background technique [0002] During the power generation process of coal-fired, gas-fired or oil-fired power generation units in thermal power plants, a large amount of smoke will be generated due to the combustion of fuel. The flue gas generated by the combustion of the unit will pass through the flue gas treatment equipment such as desulfurization, dust removal and desulfurization successively under the drive of induced draft fan, blower fan and other equipment. Exhaust to atmosphere through chimney. With the continuous increase of domestic power supply demand, domestic 1000MW-class thermal power plants are increasing day by day, and the flue gas volume generated by high-power units makes the cross-section of the flue structure on both sides of the chimney larger and larger. [0003] The flue device in the prior art usually adopts four supporting panels to f...

AI Technical Summary

Problems solved by technology

[0005] The amount of steel structure used in the flue structure in the prior art is large. Due to the large number of inner struts used, it not only increases the area of ​​the flue structure that needs anticorrosion, but also increases the corrosion leakage between the inner struts and the support panel. At the same time, it is easy to cause the increase of flue gas flow resistance, resulting in the increase of fan power, waste of energy, and increase of operation and maintenance costs

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