Hood for circulating fluidized bed boiler

A circulating fluidized bed and air cap technology, applied in the field of air cap structure, can solve problems such as poor fluidization effect, clogging of ash particles, air cap wear, etc., and achieve the effects of optimizing the fluidization effect, preventing air hole clogging and convenient air outlet.

Inactive Publication Date: 2017-01-04
WUXI HUAGUANG BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The air outlet holes along the horizontal direction are processed on the outer wall of the existing wind cap, which causes larger dust particles to be blocked in the air outlet holes, and the airflow from the air outlet holes is easy to wash to the adjacent wind caps, which is easy to cause the wind caps to wear; Air supply, too small wind resistance, poor fluidization effect, etc.

Method used

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  • Hood for circulating fluidized bed boiler
  • Hood for circulating fluidized bed boiler
  • Hood for circulating fluidized bed boiler

Examples

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Embodiment Construction

[0016] See figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, a hood for a circulating fluidized bed boiler includes a hood head 1 and a connecting pipe 2, the hood head 1 is set on the upper end of the connecting pipe 2, the bottom of the hood head 1 is fixedly connected to the boss 4 of the connecting pipe 2, and the connecting pipe 2 The upper side wall is provided with two rows of connecting air holes 6 along the circumferential direction, and there may be more rows. The lower side wall of the hood head 1 is provided with two rows of air outlet holes 5 along the circumferential direction. The hole 6 and the adjacent two rows of air outlet holes 5 of the hood are arranged in a staggered manner, the best is a row of eight connecting air holes 6 and eight air outlet holes 5 of the hood, and the air outlet holes 5 of the hood are inclined downward Arrangement, the angle of downward inclination is 10 °-20 °, the best is 15 °; the top of the hood head 1 is pro...

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PUM

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Abstract

The invention relates to the technical field of hood structures in an air distributing device, in particular to a hood for a circulating fluidized bed boiler. By the adoption of the hood, blocking of an air hole can be effectively prevented, fluidization effect can be optimized, and combustion efficiency can be improved. The hood comprises a hood head and a connecting pipe, wherein the upper end of the connecting pipe is sleeved with the hood head, and the bottom of the hood head is connected with a boss of the connecting pipe. The hood is characterized in that at least two rows of connecting pipe air holes are formed in the peripheral direction of the side wall of the upper portion of the connecting pipe, hood air outlets are formed in the peripheral direction of the side wall of the lower portion of the hood head and are inclined downwards, and the bottom of the hood head is connected with the boss of the connecting pipe through welding.

Description

technical field [0001] The invention relates to the technical field of wind cap structure in an air distribution device, in particular to a wind cap for a circulating fluidized bed boiler. Background technique [0002] As an advanced coal-fired technology, circulating fluidized bed combustion technology is widely used in power plant boilers and industrial boilers because of its good fuel adaptability, high combustion efficiency, superior environmental protection performance and load regulation performance. . The air distribution device is one of the key components in the combustion equipment of the circulating fluidized bed boiler. Its performance directly affects the fluidization status of the fluidized bed boiler and the flow, combustion and heat transfer process in the combustion chamber, which in turn affects the fluidized bed boiler. performance, and the hood unit is its most important component. Therefore, the design of the air cap device directly affects the normal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C10/20
CPCF23C10/20
Inventor 顾白洁陆晓焰杨巍钱钢
Owner WUXI HUAGUANG BOILER
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