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Integrated vane and diamond-shaped guide vane

A fin, rhombus technology, applied in the direction of fluid flow, mechanical equipment, etc.

Inactive Publication Date: 2012-06-27
THE BABCOCK & WILCOX CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention solves these and other problems present in existing devices by combining the best features of existing mixing vanes with diamond-shaped flow guides resulting in an overall device that improves system design

Method used

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  • Integrated vane and diamond-shaped guide vane
  • Integrated vane and diamond-shaped guide vane

Examples

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Embodiment Construction

[0020] See attached drawings and in particular image 3 and Figure 5-7 , which shows an improved fluid system piping structure, which combines fins (12) and rhombic guide vanes (20) into one. With this structure, the flow downstream of the throat of the airfoil can be evened out. Comparison between distributors with and without rhombic blades (20) ( figure 1 , 2 and image 3 Comparison) clearly shows the improvement of fluid distribution after adopting rhombic blades (20). The aerodynamic shape of the rhombic blades (20) and airfoils (12) also contributes to the design goal of minimizing irrecoverable pressure losses of the system. Due to their aerodynamic shape exposed to the air flow, the above advantages exist whether or not the fins (12) or particle injection for NOx reduction are employed. Heat gradients across the flue cross-section are also minimized by uniform distribution of the flue gas for temperature control.

[0021] For SCR applications with ammonia injec...

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Abstract

This invention is a flow strengthening structure used inside of pipeline such as rectangular smoke flue pipe. A series of tear like fins are assembled in the pipeline and extend from top to bottom. A series of rhombic blades are assembled between tear like fins and also extend from pipeline top to bottom. They are used to supply more even fluid distribution and decrease pressure. A series of baffles extending from tear like fins and rhombic blades can be used too.

Description

technical field [0001] The present invention relates generally to devices for distributing and mixing particulate or air-laden gas injections in pipelines, particularly those used in power stations which may contain NO X A device inside the pipeline of ammonia. Background technique [0002] It is well known to use fins in the secondary air supply duct and in the selective catalytic reduction (SCR) system flue (10) to distribute and mix the air flow, e.g. figure 1 shown. A typical structure includes a plurality of full fins (12) in the center of the flue and half fins (14) in the walls (16) of the flue (10). Another example of an existing airfoil design is the figure 2 shown. This is the configuration of the fins used to distribute and mix the economizer bypass flue gas used in the SCR flue system of the Power & Light, Hawthorn Power Station in Kansas City. The system uses figure 1 Basic system shown but with the addition of a flat plate (18). The wavy lines in the ab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15D1/04
Inventor M·J·艾尔布切特S·W·伯格
Owner THE BABCOCK & WILCOX CO
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