Equipressure air feeding device of large industrial chain grate boiler

Abstract

The invention relates to an equipressure air supply device for a large industrial chain grate boiler. By adopting aerodynamic principles and the design principle of fire coal chain grate boiler and facing new projects arising from upsizing and ultra-large type development of future 230MW-630MW industrial chain grate boiler, the invention aims at establishing new combination of content knowledge, a brand-new mathematical model concept so as to put into use a new equipressure air supply device on the industrial chain grate boiler featuring upsizing and ultra-large type development so as to satisfy the on-line control of equipressure air supply of transverse and longitudinal burning of the upsizing or ultra-large type industrial chain grate boiler, and the on-line random variation regulation and control of combustion conditions and combustion air amount under the centralized control of the chain grate boiler, namely, an equipressure air supply way to control dynamic pressure and maintain balance of static pressure on the precondition of unchanged set air quantity and wind pressure on the condition of adapting to quite unstable operating conditions of the upsizing or ultra-large type industrial chain grate boiler. The equipressure air supply way is an important link in realizing high working efficiency and energy saving of upsizing or ultra-large type chain grate boiler and ideal combustion conditions of the boiler. The invention relates to an equipressure air supply way employing devices such as two symmetrical variable cross section equipressure ducts, a lateral grouping uniform cross section air outlet and an equipressure wind chamber.

Description

technical field [0001] The invention relates to a device for implementing equal pressure and uniform air supply in a large industrial chain grate boiler by using the aerodynamic principle of a central air conditioner, and belongs to the technical field of international patent classification F23L "industrial air supply". Background technique [0002] In the prior art, the grate air supply of small and medium-sized chain grate boilers generally adopts a rectangular or fan-shaped air chamber to supply air. This air supply method provides the same air supply area for the grate, because there is no equal pressure air supply The basic conditions, there is the problem of uneven air supply. Although people have thought of multiple ways, such as adopting deflectors, throttling baffles, etc. to improve the uneven defect of air distribution, they are all unsatisfactory, which greatly affects the combustion efficiency, causes large fuel consumption, and causes fuel waste. The replaceme...

AI Technical Summary

Problems solved by technology

In the face of the large-scale or super-large development of 230MW-630MW industrial chain grate boilers in the future, there are obvious shortcomings and fatal flaws, which seriously restrict the large-scale development of industrial chain grate boilers in the future

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