Boiler air bin air distributing device with built-in flow stabilization and flow shunting and guide functions

A technology of flow diversion, flow diversion and air distribution device, which is applied in lighting and heating equipment, combustion air/fuel supply, combustion method, etc., and can solve the problems of large loss of air flow resistance, poor operability of air volume distribution, and large consumption of metal materials and other problems, to achieve the effect of uniform horizontal air distribution, simple structure and reduced emissions

Inactive Publication Date: 2013-01-16
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] These research results have improved the uniformity of the outlet flow of the air chamber to varying degrees, but there are deficiencies in the

Method used

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  • Boiler air bin air distributing device with built-in flow stabilization and flow shunting and guide functions
  • Boiler air bin air distributing device with built-in flow stabilization and flow shunting and guide functions
  • Boiler air bin air distributing device with built-in flow stabilization and flow shunting and guide functions

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Embodiment Construction

[0021] As shown in FIG. 2 , the built-in air equalization structure of the boiler air chamber of the present invention is composed of an air chamber shell 1 , a built-in stabilizing chamber 2 , a diversion deflector 3 , and a fixed grille 4 .

[0022] The structural dimensions of length, width and height of the silo shell 1 are determined by the tonnage of the boiler and the size of the fire grate, and the size of the air silo inlet is determined by the required air volume, the air flow characteristics of the pipeline and the structural size of the silo.

[0023] After the size of the air chamber housing 1 and the size of the inlet are determined, the structural size of the built-in stabilization chamber 2 can be determined. Such as image 3 As shown, the side plate 6 of the built-in stabilizing chamber has a triangular structure, and it can also be rectangular or trapezoidal in consideration of convenient installation and structural fixation. For one-sided air intake, the le...

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Abstract

The invention belongs to the field of energy source utilization, and aiming at chain grate stoker grate firing boilers, relates to a boiler air bin air distributing device with built-in flow stabilization and flow shunting and guide functions. The boiler air bin air distributing device with the built-in flow stabilization and flow shunting and guide functions comprises three main components including an air bin outer shell, a built-in flow stabilization cavity and a distributary flow guide plate; the built-in flow stabilization cavity and the flow shunting and guide plate are fixed by adopting a fixed grating; the built-in flow stabilization cavity is directly connected with an air chamber air inlet, can prevent vortex generated at the inlet because of flow pass expansion, and plays a flow stabilization effect. A group of circular arc flow shunting and guide plates are distributed along the air flow direction of an air chamber inlet, and play roles of flow shunting and guide effects so as to achieve the requirement of horizontal air distribution uniformity. The boiler air bin air distributing device with the built-in flow stabilization and flow shunting and guide functions provided by the invention can be suitable for requirements of chain grate stoker boilers with different tonnages, is also suitable for the air bin structure transformation of old chain grate stoker boilers, can effectively improve the horizontal air distribution uniformity of a grate, and achieves the energy-saving and emission-reduction effects.

Description

technical field [0001] The invention belongs to the field of energy utilization, and relates to a boiler air chamber air distribution device with built-in functions of stabilizing flow and diverting flow. technical background [0002] At present, the air participating in the coal combustion of the layer-fired boiler is generally sent in through the air bin at the lower part of the chain grate. Air supply on both sides is a common air supply method for chain grate boilers. When the air supply on both sides is adopted, the air distribution along the moving direction of the grate can be controlled by the air intake volume of each air bin, and the horizontal air distribution perpendicular to the moving direction of the grate is determined by the distribution of the air flowing out from the outlet of the independent air bin. Uneven horizontal air distribution causes different air volumes at different positions along the horizontal direction of the grate, and insufficient coal co...

Claims

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Application Information

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IPC IPC(8): F23L1/02
Inventor 徐胜利吴俊男田夫王晓放辛建池
Owner DALIAN UNIV OF TECH
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