Single-drum chimney preventing flue inlet smoke from colliding

Abstract

The invention discloses a single-drum chimney preventing flue inlet smoke from colliding. The single-drum chimney solves the problem that according to a dual-inlet single-drum chimney, smoke generated by the positive pressure of the smoke and the collision of two pieces of the smoke seriously flows down. The single-drum chimney is characterized in that a left-turning bend (3) is arranged in a single-drum chimney flue inlet (4), the left end of the left-turning bend is connected with a left flue expanding pipe (2), the left-turning bend is arranged in the bending and turning mode in the upward and forward directions, a left-turning bend bottom circular arc face (12) and a left-turning bend rear circular arc face (16) are arranged on the left-turning bend, a right-turning bend (8) is arranged in a single-drum chimney right flue inlet (9), the right end of the right-turning bend is connected with a right flue expanding pipe (7), the right-turning bend is arranged in the bending and turning mode in the upward and backward directions, and a right-turning bend bottom circular arc face (13) and a right-turning bend front circular arc face (17) are arranged on the right-turning bend. The single-drum chimney preventing the flue inlet smoke from colliding is particularly suitable for being used in the dual-inlet single-drum chimney in a power station.

Description

technical field [0001] The invention relates to a chimney, in particular to a double-entrance single-tube chimney used in a thermal power plant. Background technique [0002] The rear facilities of large and medium-sized thermal power plants are well-organized, land-saving and easy to manage. Generally, the flue inlets of the two furnaces of the single-tube chimney are horizontally symmetrical. When the desulfurization of the coal-fired boiler is in normal operation, the suction fan will introduce most of the flue gas The chimney, the flue gas is discharged upwards with the bell mouth on the flue. In order to meet the requirements of environmental protection emissions, most thermal power plants have adopted the post-furnace limestone wet desulfurization process. The flue elevation of the chimney entrance is relatively high, usually more than 30 meters. It is difficult and uneconomical to set up ash accumulation platform and smoke partition wall at the high position of the c...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a single-tube chimney that prevents the flue gas from colliding at the entrance of the flue, and solves the problem that the flue gas falling caused by the positive pressure of the flue gas and the collision of two smokes in the double-entrance single-tube chimney seriously affects the surroundings of the chimney. environmental problems

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