Explosion-proof door for waste heat boiler and waste heat boiler

Abstract

The invention discloses an explosion-proof door for a waste heat boiler and the waste heat boiler. The explosion-proof door includes an explosion-proof door connecting pipe, an explosion-proof door frame, an explosion-proof door body and a limiting component. The top part of the explosion-proof door connecting pipe forms a bent part, and the end part of the bent part forms a top pipe opening. Theexplosion-proof door frame is connected to the bent part. The explosion-proof door body is connected to the explosion-proof door frame through a rotating shaft to open or close the top pipe opening, when the explosion-proof door body is in the closed state, the explosion-proof door body is tilted relative to the horizontal plane, the center of gravity is located below the rotating shaft, and the explosion-proof door body is constantly closed on the explosion-proof door frame under the action of the self weight. The limiting component is blocked on the explosion-proof door body to limit the opening angle of the explosion-proof door body. According to the explosion-proof door in the embodiment, the explosion-proof door body is arranged at the top pipe opening through the explosion-proof doorframe, the explosion-proof door body is constantly closed on the explosion-proof door frame due to the self weight, and air leakage is not prone to happening to an air duct. When a deflagration phenomenon occurs, the explosion-proof door body is opened, high-temperature flue gas is discharged, and safe operation of the waste heat boiler is ensured. After pressure relief, the explosion-proof doorbody quickly resets under the action of the self gravity.

Description

technical field [0001] The invention belongs to the technical field of boilers, in particular to an explosion-proof door of a waste heat boiler and a waste heat boiler. Background technique [0002] The waste heat boiler is one of the core equipment in the non-ferrous metal smelting process. It can recover the high-temperature flue gas discharged from the metallurgical industrial furnace, and use the heat carried by the high-temperature flue gas to produce the steam required for the process. Since metallurgical industrial furnaces are often mixed with a certain amount of coal during the smelting process, the high-temperature flue gas entering the waste heat boiler often contains a certain amount of combustible components such as hydrocarbons, carbon monoxide, and tiny carbon particles. In a smooth and relatively airtight flue, once it encounters a fire source, it is very easy to deflagrate, especially when these combustible mixtures gather somewhere in the flue, it is more l...

AI Technical Summary

Problems solved by technology

For this reason, the present invention proposes an explosion-proof door of the waste heat boiler, which can be opened repeatedly, and resets conveniently and quickly, which solves the safety problems and long-term shutdown of the waste heat boiler caused by internal overpressure or deflagration during operation The problem

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