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 comprises an explosion-proof door connecting pipe, a first flange and an explosion-proof membrane plate. One end of the explosion-proof door connecting pipe forms an outlet. The first flange is arranged at the outlet. The explosion-proof membrane plate is pressed on the outlet through the first flange. One part of the edge of the explosion-proof membrane plate is detachably connected to the first flange, the other part of the edge of the explosion-proof membrane plate isprovided with a plurality of openings, each opening penetrates through the explosion-proof membrane plate in the thickness direction of the explosion-proof membrane plate, each opening extends towardsthe side edge of the explosion-proof membrane plate to form a notch, and therefore the part, provided with the openings, of the edge of the explosion-proof membrane plate is separated from the firstflange for pressure relief when deflagration occurs. According to the explosion-proof door in the embodiment, the explosion-proof membrane plate is connected to the explosion-proof door connecting pipe, and the sealing state is maintained when the internal pressure is normal. In the event of the deflagration, as the part of the edge of the explosion-proof membrane plate is provided with the openings and the notches, quick pressure relief can be achieved, and the explosion-proof membrane plate cannot follow high-temperature smoke to fly out. The explosion-proof membrane plate is conveniently and quickly replaced.

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 for waste heat boilers, which can be opened quickly and relieve pressure safely during deflagration. Resulting safety concerns and prolonged production downtime

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