Desulphurized flue gas damper and blades

Abstract

The invention provides a desulphurized flue gas damper. The desulphurized flue gas damper comprises an outer frame, at least one shaft mounted on the outer frame and baffles fixed to the shafts, wherein the multiple shafts are mounted, the shafts are evenly distributed along the outer frame; sealing strips are arranged on the two baffles; the sealing strips are arranged on the upper edges and the lower edges of the baffles; and the sealing strips are in a fan shape, are elastic and can stretch out and retract. Each baffle is of a multi-layer composite structure, and cavities are formed in the two ends of the innermost layer correspondingly. An electromagnet is arranged in each cavity. The magnetic poles of electromagnets between the upper baffle and the lower baffle are opposite. The fan-shaped sealing strips are designed between two layers of blades, sealing air with the pressure being at least 1000 Pa higher than that of flue gas is introduced into the baffles, and a sealing air insulation layer is formed between the two layers of baffles to prevent flue gas flow from passing through. The blades are of a composite multi-layer structure so that the strength and rigidity of the blades can be improved. The sealing effect of the desulphurized flue gas damper is further improved through the electromagnet principle.

Description

technical field [0001] The invention relates to a flue gas baffle door of a desulfurization device, in particular to a desulfurization flue gas baffle door with a fan-shaped sealing strip and an electromagnet, and belongs to the technical field of environmental protection equipment. Background technique [0002] The flue gas desulfurization baffle door is mainly used in the flue gas desulfurization system (FGD) of thermal power plants to isolate the flue gas circulation, and can also be used in other flue gas ducts with relatively high requirements for operation isolation. In the desulfurization process, the flue gas baffle door is an important device for flue gas discharge, which directly affects the normal operation and safety of the boiler system and the desulfurization system. The desulfurization baffle door is used on the inlet and outlet of the absorption tower or the bypass flue of the flue gas desulfurization system, or in the flue gas denitrification and flue gas du...

AI Technical Summary

Problems solved by technology

[0003] In addition, the shape and structure of the blades of the existing baffle doors have poor corrosion resistance. Due to continuous corrosion and consumption, the sealing effect will gradually weaken. The misalignment of the strips, even support each other and bulge and cannot be sealed

Many defects in the existing sealing technology will lead to the failure of the sealing

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