Explosion-proof door of waste heat boiler

Abstract

The invention discloses an explosion-proof door of a waste heat boiler. The explosion-proof door comprises an explosion-proof door connecting pipe, an explosion-proof door cover and a limiting assembly; an outlet is formed in one end of the explosion-proof door connecting pipe; the explosion-proof door cover seals and covers the outlet in a rotating mode; the limiting assembly comprises a balancing weight rotating shaft, a limiting block and balancing weights; the limiting block is arranged on the explosion-proof door connecting pipe; the balancing weight rotating shaft is connected to the explosion-proof door cover, synchronously rotates with the explosion-proof door cover and is limited on the limiting block after rotating so as to limit the maximum opening angle of the explosion-proof door cover; and the multiple balancing weights are detachably connected to the balancing weight rotating shaft, so that the jump pressure of the explosion-proof door cover can be adjusted. According tothe explosion-proof door, after deflagration occurs in the explosion-proof door and sufficient pressure is accumulated, the explosion-proof door cover and the balancing weight rotating shaft jointlyrotate and are opened under the action of the impact force, and when the explosion-proof door cover rotates to the position where the balancing weight rotating shaft is matched with the limiting block, the explosion-proof door cover is opened to the maximum angle for pressure relief; rapid reset can be realized after pressure relief; and the jump pressure is adjustable, and the use reliability ishigh.

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. Background technique [0002] The waste heat boiler is one of the core equipment in the non-ferrous metal smelting process. It can cool and 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 by the process. The smelting process often involves the reduction reaction of metal oxides. Heavy oil, natural gas, liquefied petroleum gas or coal are used as reducing agents. The chemical reactions involved are complex and changeable, and the reaction is often incomplete, making the high-temperature flue gas entering the waste heat boiler It contains a certain amount of combustible components such as hydrocarbons, carbon monoxide, and small carbon particles. When these combustible mixtures flow through a poorly ventilated...

AI Technical Summary

Problems solved by technology

For this reason, the present invention proposes an explosion-proof door of the waste heat boiler. The explosion-proof door of the waste heat boiler can adjust the take-off pressure by adjusting the number and position of counterweights, and it is easy to reset after take-off, which solves the problem of frequent take-off and Technical problems that are not easy to reset

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