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Integrated vane and diamond-shaped guide vane

A fin, rhombus technology, applied in the field of devices for jetting gas

Inactive Publication Date: 2008-03-26
THE BABCOCK & WILCOX CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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
  • Integrated vane and diamond-shaped guide vane

Examples

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Embodiment Construction

[0020] Referring to the drawings and in particular to Figures 3 and 5-7, there is shown an improved fluid system piping structure which incorporates fins (12) and diamond guide vanes (20). With this structure, the flow downstream of the throat of the airfoil can be evened out. The ratio hinge between distributors with and without rhombic vanes (20) (compare Figs. 1, 2 and Fig. 3) clearly shows the improvement in fluid distribution with rhombic vanes (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 injection between the vanes (...

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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 known to use fins to distribute and mix the air flow in the secondary air supply duct and in the selective catalytic reduction (SCR) system flue (10), as shown in FIG. 1 . 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 shown in Figure 2. 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. This system uses the basic system shown in Figure 1 but adds a flat plate (18). The wavy lines in the above and the remain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23L9/00F15D1/04
Inventor M·J·艾尔布切特S·W·伯格
Owner THE BABCOCK & WILCOX CO
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