Double-pipe or multi-pipe type chimney smoke discharging system

Abstract

The invention provides a double-pipe or multi-pipe type chimney smoke discharging system. The system comprises at least two smoke discharging cylinders. The bottom of each smoke discharging cylinder is connected with a horizontal flue. The double-pipe or multi-pipe type chimney smoke discharging system is characterized in that the vertical sections of the every two adjacent smoke discharging cylinders communicate with each other through a smoke communication device; and the smoke communication devices are internally provided with pressure-inductive self-adjusting type baffle doors which can adjust the smoke discharge among the smoke discharging cylinders automatically, and the front ends and the rear ends of the baffle doors are provided with smoke pressure sensors. The double-pipe or multi-pipe type chimney smoke discharging system effectively solves the problems that smoke discharge is uneven in a double-pipe or multi-pipe chimney; an original smoke discharging cylinder structure is almost unchanged, only the smoke communication devices are arranged between the adjacent smoke discharging cylinders for flow distribution, the structure is simple, arrangement is flexible, and the device cost is low; and after flow distribution and adjustment are conducted through the smoke communication devices, the smoke discharge flow speed is lowered, the situation of the chimney rain can be avoided or relieved, and environmental protection is facilitated; and meanwhile smoke resistance is lowered, the energy consumption of draught fans in the smoke discharging system is lowered, and effective economic benefits are generated.

Description

technical field [0001] The invention relates to a coal-fired boiler flue gas discharge system, in particular to a double-pipe or multi-pipe chimney flue gas discharge system. Background technique [0002] At present, in the flue gas emission of coal-fired boilers, there is a situation that "the flue gas emission between the double-pipe or multi-pipe chimneys is unbalanced, the flue gas velocity of a single chimney is high, and the resistance of the flue gas is large, but the rest of the chimneys are temporarily idle" , when this situation occurs, the energy consumption of the fan of the flue gas exhaust system is high, and the cost increases. [0003] figure 1 It is a structural schematic diagram of a traditional double-pipe chimney flue gas discharge system. The chimney 1 is in the form of a double steel inner cylinder. The inner diameter of the chimney 1 is 5.5 meters, and the chimney 1 is independently installed. The bottoms of the two chimneys 1 are respectively connec...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is how to avoid unbalanced flue gas discharge between double-pipe or multi-pipe chimneys at a lower cost on the basis of modifying the original chimney structure as little as possible

Images