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Novel reducing square bend and flue gas pipeline system

A new type of elbow technology, applied in the field of new variable diameter square elbow and flue gas pipeline system, can solve the problems of small bending angle of equal diameter elbow, sudden change of elbow section, pipeline vibration and noise, etc., and achieve reduction Effects of flow field resistance, reducing resistance and layout space, reducing vibration and noise

Active Publication Date: 2016-03-23
CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The elbow section of this connection method changes suddenly, and the bending angle of the equal diameter elbow is too small, so that the flow field of the flue gas in the pipeline changes suddenly and the flow field is extremely uneven, which will cause vibration and noise in the pipeline.

Method used

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  • Novel reducing square bend and flue gas pipeline system

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Embodiment Construction

[0021] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] like Figure 1 to Figure 2 As shown, a new type of reducing square elbow, including a large end 300 and a small end 100, and a smooth transition connecting the large end 300 and small end 100 of the variable diameter section 200, the large end 300, small end 100 and The cross-sections of the reducing section 200 are set to quadrilaterals; and, on the reducing section 200, R=1~5D; wherein, R is the radius of curvature at any point on the center line 210 of the reducing section, D is the length of the longer diagonal of the cross-sectional quadrilateral at that point. Moreover, since the cross-section of the diameter-reducing section 200 changes, the radius of curvature R also changes with the change of the cross-section.

[0023] By controlling the radius of curvature R=1~5D at any point on the center line 210 of the quadrilateral diameter redu...

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Abstract

The invention discloses a novel reducing square bend and a flue gas pipeline system. The novel reducing square bend comprises a large end, a small end and a reducing segment in smooth transition connection with the large end and the small end. The cross section of the large end, the cross section of the small end and the cross section of the reducing segment are all quadrilateral. On the reducing segment, R=1-5 D, wherein R is the radius of curvature of any point on the center line of the reducing segment, and D is the length of the long diagonal of the quadrangle of the cross section of the point. According to the novel reducing square bend, pipeline transition is smooth, and therefore a flue gas flow field in a pipeline is even, and vibration and noise of the pipeline are reduced.

Description

technical field [0001] The invention relates to the technical field of pipeline design in a thermal power plant, in particular to a novel variable-diameter square elbow and flue gas pipeline system. Background technique [0002] With the improvement of the layout requirements of thermal power plants, the layout space is becoming more and more compact in order to save land, and the requirements for saving space and resistance between different cross-sections between equipment and pipelines are becoming increasingly prominent. Conventional connection methods take up a lot of space, and it is difficult to meet the layout requirements. Demand, the use of new connecting parts to solve the problem of compact layout needs to be solved urgently. In the traditional technology, in order to connect two square pipes with different cross-section sizes, the tapered size variable cross-section pipe head is generally used to connect the large cross-section square pipe first, and then the va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23J13/04
CPCF23J13/04F23J2213/20
Inventor 杨劲范旭李伟科潘灏马雪松
Owner CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
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