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Adjustable flow guide device

A diversion device and an adjustable technology, which is applied in exhaust gas devices, combustion product treatment, combustion methods, etc., can solve the problems of large flue resistance, inability to optimize the shape, elbow flue flow field distribution, etc., and achieve reduction Reduce operating costs, increase equipment utilization, and improve the effect of flow field distribution

Active Publication Date: 2022-03-29
GUODIAN HUNAN BAOQING COAL POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an adjustable flow guide device for the problems in the prior art that the flue resistance is relatively large and the flow field distribution in the special-shaped and elbow flue cannot be optimized.

Method used

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  • Adjustable flow guide device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Please refer to figure 1 and figure 2 As shown, the present invention discloses an adjustable flow guiding device, which includes an air inlet flue 1 and an air outlet flue 2, and also includes a support rod 5 and a linkage mechanism 7, the air inlet flue 1 and the air outlet flue A plurality of first flow guide devices and a plurality of second flow guide devices are provided at the junction of the outlet flue 2, and the first flow guide devices and the second flow guide devices are arranged alternately along the radial direction of the flue, so The first guide device includes a connected front guide plate 3 and a rear guide plate 4, the support rod 5 is located at the tail end of the front guide plate 3 and slides radially through the flue, the second The deflector includes at least one intermediate deflector 6, one end of the intermediate deflector 6 is hinged to the support rod 5, and the other end is hinged to the linkage mechanism 7, and the linkage mechanism 7 ...

Embodiment 2

[0040] The difference from Embodiment 1 is that the joint of the inlet flue 1 and the outlet flue 2 is provided with a wedge-shaped elbow flue.

[0041] Please refer to image 3 As shown, an adjustable flow guiding device, the entrance of the outlet flue 2 is provided with a slope, the front deflector 3 is parallel to the intake flue 1, and the rear deflector 4 is parallel to the outlet flue 2 The slopes are parallel, the intake flue 1 extends into the outlet flue 2 for a certain distance, so that the two ends of the linkage mechanism 7 respectively penetrate the intake flue 1 and the slope, and the support rod 5 is located at the windward side of the front end of the linkage mechanism 7 , the middle deflector 6 is a straight deflector, one end of the straight deflector is hinged to the support rod 5, and the other end is hinged to the linkage mechanism 7.

Embodiment 3

[0043] The difference from Example 1 is that a circular elbow flue is provided at the junction of the inlet flue 1 and the outlet flue 2, and the middle deflector 6 includes an arc deflector 6-1 and a straight deflector 6. -2.

[0044] Please refer to Figure 4 As shown, an adjustable flow guide device, the junction of the inlet flue 1 and the outlet flue 2 is provided with a circular elbow flue, and the middle guide plate 6 includes an arc The deflector 6-1 and the straight section deflector 6-2, the junction of the arc deflector 6-1 and the straight section deflector 6-2 is provided with a support rod 5, and the straight section One end of the segment deflector 6-2 is hinged to the support rod 5, and the other end is hinged to the linkage mechanism 7. The arc deflector 6-1 is parallel to the circular elbow flue, so The straight section deflector is parallel to the outlet flue. The arc deflector 6-1 moves radially along the flue under the action of the support rod 5, and t...

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PUM

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Abstract

The invention relates to an adjustable flow guiding device which comprises a gas inlet flue and a gas outlet flue and further comprises a supporting rod and a connecting rod mechanism, a plurality of first flow guiding devices and a plurality of second flow guiding devices are arranged at the connecting position of the gas inlet flue and the gas outlet flue, and the first flow guiding devices and the second flow guiding devices are arranged in a staggered mode in the radial direction of the flue. The first flow guide device comprises a front-section flow guide plate and a rear-section flow guide plate which are connected, the supporting rod penetrates through the flue and is located at the tail end of the front-section flow guide plate, the second flow guide device comprises at least one middle flow guide plate, one end of the middle flow guide plate is hinged to the supporting rod, the other end of the middle flow guide plate is hinged to the connecting rod mechanism, and the connecting rod mechanism penetrates through the gas outlet flue in the radial direction. By arranging the first flow guide device and the second flow guide device, the problem that flow velocity and pressure distribution in an elbow flue, a variable-diameter flue or a special-shaped flue at the joint is not uniform can be effectively solved, irregular flow of fluid is restrained, and flow field turbulence and flow resistance generated by vortex and centrifugal action in the flue are reduced.

Description

technical field [0001] The invention relates to the technical field of flue diversion equipment at the tail of a power plant, in particular to an adjustable diversion device. Background technique [0002] As the national environmental protection policy becomes more and more stringent, coal-fired generating units have added desulfurization, denitrification and other equipment, which increases the resistance of the tail flue. It is uneven, and the resistance in many positions is relatively large, resulting in an increase in the power of the induced draft fan and the increase in current consumption. Even some power plants cannot operate with high load, and some equipment have a great impact on the utilization rate and life of downstream equipment, so the optimization of the tail flue is very necessary. [0003] At present, the commonly used solution for the tail flue is to optimize the direction of the flue, cancel the asymmetric and unnecessary elbow structure, and make the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J13/00
CPCF23J13/00
Inventor 刘军李新颖刘鹏飞黄德胜万华李永华刘思晔李驰方永旭魏佳付静崔子健包伦雷扬
Owner GUODIAN HUNAN BAOQING COAL POWER CO LTD
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