Adjustable quick folding flue baffle door

Abstract

The invention relates to a quick adjusting on-off type smoke baffle door, which comprises a rotating shaft which is arranged in a smoke gas flow passage and sealing baffles which are installed on the two sides of the rotating shaft, an actuating mechanism comprises a switch type actuating mechanism and a regulating type actuating mechanism, the switch type actuating mechanism and the regulating type actuating mechanism are respectively connected with two groups of the sealing baffles through the rotating shaft. The switch type actuating mechanism of the invention can realize that the time from off-state to full-open state is less than 25s, and the smoke baffle can be operated under a maximum differential pressure, and is tightly closed, the security of examination and maintenance staffs can be guaranteed under any circumstances, and the phenomenon of distortion and jam fault can be avoided. Furthermore, the invention is controlled by two actuating mechanisms respectively, the quantityof the baffles which are driven by a baffle door actuating mechanism is reduced into half, driving force moment which is need in the process of opening the baffle door is reduced, and the operation of each baffle is flexible, convenient, and reliable.

Description

technical field [0001] The invention relates to a bypass flue baffle device in the technical field of flue gas desulfurization in a thermal power plant, in particular to an adjustable-quick opening and closing flue gas baffle door with a door that can be opened quickly and the opening of the baffle can be adjusted . Background technique [0002] In the flue gas desulfurization project of the power plant, the normal operation of the bypass flue gas baffle door is very important to ensure the safety of the boiler operation. During the long-term normal operation of the desulfurization system, the bypass flue gas baffle door is always closed. Since the bypass flue baffle is a single-shaft double-louver sealing baffle driven by an actuator, it operates under the maximum pressure difference and does not close tightly, especially in an accident state, it is necessary to quickly open the bypass baffle At the same time, due to the jamming of the rotating shaft and the ash accumulat...

AI Technical Summary

Problems solved by technology

Since the bypass flue baffle is a single-shaft double-louver sealing baffle driven by an actuator, it operates under the maximum pressure difference and does not close tightly, especially in an accident state, it is necessary to quickly open the bypass baffle At this time, due to the jamming of the rotating shaft and the ash accumulation in the flue, it is very easy to hinder the rapid opening of the baffle door, and even cause the unit to stop, which brings potential safety hazards and affects the safety of the unit.

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