Blade angle adjustable four-channel whirl pulverized coal burner

A pulverized coal burner, blade angle technology, applied in the direction of burners, burners burning powder fuel, combustion methods, etc., can solve problems such as difficult, uncontrollable units, difficult to control the combustion state, etc., to achieve convenient operation, structure Reasonable, quality-enhancing effects

Inactive Publication Date: 2015-06-10
黄冈圣嘉高新机电设备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For a general four-channel swirl pulverized coal burner, since the direct air, swirl air, and central air are mostly provided by the same fan, air valves are used to adjust the air volume in multiple air channels, and when the helix angle of the swirl air is constant, it is difficult to Control combustion state
Just as in a multivariate system, a certain unit cannot be adjusted, it is very difficult to find an optimal stable point

Method used

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  • Blade angle adjustable four-channel whirl pulverized coal burner
  • Blade angle adjustable four-channel whirl pulverized coal burner
  • Blade angle adjustable four-channel whirl pulverized coal burner

Examples

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Embodiment Construction

[0017] Such as figure 1 As shown, a four-channel air supply device composed of a DC air duct 10, a DC air duct 11, a swirl air duct 12, a coal air duct 13, a central air duct 14 and a main air inlet duct 30 is made of metal materials. With the main air inlet pipe 30, the central air inlet pipe 28 connecting the central wind air duct 14, the swirl air inlet pipe 25 connecting the swirl air air pipe 12, the direct current air inlet connecting the direct current wind air pipe 11 are set on the independent air inlet pipe 30. Air duct 22, and central air valve 29 is set on central air inlet pipe 28, swirl air valve 26 is set on swirl air inlet pipe 25, DC air valve 23 is set on DC air inlet pipe 22, and coal wind air duct 13 is A coal air inlet pipe 32 is set, and a flame cover adjusting device 34 and a telescoping pipe 35 are set on the four-channel air supply device pipeline simultaneously, and a combustion head 20 is arranged at the front end of the four-channel air supply devic...

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Abstract

The invention discloses a blade angle adjustable whirl pulverized coal burner, and solves the difficult problem that a universal four-channel whirl pulverized coal burner cannot adjust the swirling intensity of a swirler by changing the angle of a blade. The blade angle adjustable four-channel whirl pulverized coal burner is characterized in that (shown in figure 1) a blade angle adjustable swirler is arranged on the outer surface of a swirling air pipe (12) of a burning head (20), the swirling air pipe (12) forms a swirling air channel, and a swirling air pull rod adjusting device (33) is arranged at the tail end of the swirling air pipe (12) of an air supply device. The structure is reasonable, the operation is convenient, the swirler is arranged in the swirling air channel, the blade angle of the swirler is changed online through the adjusting device, so that the ideal burning state is achieved, and equipment support is provided for the production of high-quality calcined cement clinker.

Description

1. Technical field [0001] The invention belongs to a thermal facility for calcining cement clinker, in particular to a four-channel swirl pulverized coal burner with adjustable swirl blade angles. 2. Background technology [0002] The pulverized coal combustion equipment for calcining cement clinker usually adopts a four-channel swirling pulverized coal burner, and the adjustment and control means of the swirling airflow determine the performance of the burner. At present, for the general four-channel swirl pulverized coal burner, the adjustment and control of the swirling air flow is controlled by the regulating valve on the intake pipe (the intake pipe is called the swirl air duct because it is connected to the swirl air channel. The outlet of the swirl air channel is installed There are swirlers, which are also called wind fins, which are composed of blades with fixed angles, shaped like fan impellers, and have spiral grooves on the inner wall of the outlet pipe). If the...

Claims

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Application Information

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IPC IPC(8): F23D1/02
CPCF23D1/02F23D2201/00
Inventor 李铁钢王德新詹海鹏
Owner 黄冈圣嘉高新机电设备有限公司
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