Flue and chimney connecting structure for thermal power plant

Abstract

The invention discloses a flue and chimney connecting structure for a thermal power plant. The flue and chimney connecting structure comprises a diameter-variable structure and a round bending pipe, wherein one end of the diameter-variable structure is connected with a flue, a cross section of a port of the end is the same as a cross section of a flue input port, the other end of the diameter-variable structure is connected with the round bending pipe, a cross section of a port of the end is round, and the outer diameter of the port is the same as that of the round bending pipe; the tail end of the round bending pipe is connected with the bottom end of a chimney, and the outer diameter of the tail end is the same as that of the chimney. If the flue is round, the diameter-variable structure is a round diameter-variable pipe used for enabling the outer diameter of the flue to be consistent with the outer diameter of the chimney through transition; if the flue is rectangular, the diameter-variable structure is a rectangle-circle connector used for converting the rectangular flue into a round flue; the outer diameter of the round bending pipe is consistent with that of the chimney. The flue and chimney connecting structure for the thermal power plant is simple in structure, low in part consumption and low in smoke resistance, and anti-corrosion measures are convenient to implement.

Description

technical field [0001] The invention relates to the research field of chimney equipment in a thermal power plant, in particular to a connection mechanism between a flue and a chimney in a thermal power plant. 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 denitrification, dust removal and desulfurization in sequence under the drive of the induced draft fan, and finally pass through the chimney after meeting the requirements of the air pollutant emission standards for thermal power plants formulated by the national environmental protection department Exhaust to atmosphere. In recent years, the construction of thermal power generation units in the electric power industry has developed toward...

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