Bidirectional non-uniform matching air distributing water-cooled vibration grate of biomass direct-combustion boiler

Abstract

The invention relates to a bidirectional non-uniform matching air distributing water-cooled vibration grate of a biomass direct-combustion boiler, comprising a grate (1) formed by arranging a plurality of inclined water-cooled pipes (2) in parallel at predetermined intervals, wherein the grate (1) is fixed on a support frame (12); an air chamber (10) is arranged below the support frame (12); a discharge hole (13) is arranged below the air chamber (10); the water-cooled pipes (2) are connected with each other by a membrane (3) which is provided with an air inlet hole (4); an inlet end of the water-cooled pipe (2) is connected with an inlet collection tank (5); an outlet end of the water-cooled pipe (2) is connected with an inlet collection tank (6); and a driving device (8) is connected with the support frame (12) at the lower part of the grate (1) through a connecting rod (9) to provide vibration for the grate (1). A drying initial combustion zone, a primary combustion zone and an after-combustion zone are divided in the moving direction of biomass with different aperture ratios for each zone. In addition, the drying initial combustion zone is divided into three sub-zones according to the feeding amount of biomass with larger aperture ratio closer to the sub-zone of a feeding inlet.

Description

technical field [0001] The invention belongs to boiler components, and is mainly suitable for supporting installation and use of a biomass combustion boiler body. Background technique [0002] The water-cooled vibrating grate has the characteristics of simple structure, easy manufacture, low investment cost, and the grate is not easy to burn out. The vibration structure is adopted to effectively solve the problem of transmission failure caused by other grates. Biomass ash has a low melting point and less ash content in the fuel. The use of water-cooled vibrating grate can effectively solve the problem of burning out the grate pieces due to the coking of biomass due to the low ash melting point and the lack of ash. Therefore, the water-cooled vibrating grate is widely used in biomass combustion devices. [0003] Patent Nos. 01273590, 200620072192.8, and 200820108245.6 disclose three kinds of water-cooled grates. These three kinds of grates adopt a multi-air chamber structure...

AI Technical Summary

Problems solved by technology

[0004] Technical problem: The purpose of the present invention is to address the defects of the above-mentioned water-cooled vibrating grate, to provide a grate with reasonable air distribution, single warehouse air supply, wide adaptability of biomass, and sufficient biomass combustion, that is, a biomass direct-fired boiler Two-way non-uniform matching air distribution and water cooling vibrating grate to make up for the shortcomings of the above products

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