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Two-level one-inlet and five-outlet uniform distributing device system

An equalizer and outlet technology, which is applied in the field of large-scale coal-fired boiler pulverization system, can solve problems such as difficulties

Active Publication Date: 2016-03-30
SHENYANG INST OF ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is also difficult to divide one part of the material into five parts evenly in other pneumatic conveying solid materials.

Method used

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  • Two-level one-inlet and five-outlet uniform distributing device system
  • Two-level one-inlet and five-outlet uniform distributing device system
  • Two-level one-inlet and five-outlet uniform distributing device system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This embodiment provides a second-order one-inlet and five-outlet equalizer system, characterized in that: the second-order one-inlet and five-outlet equalizer system has one inlet and five outlets;

[0026] Including inlet variable-diameter rectangular tube 1, first-order distribution shell 2, first-order flow equalizing grille 3, first-order distribution grille 4, A-side rectangular cross-section variable-diameter elbow 5, B-side rectangular cross-section variable-diameter elbow 6, A-side second-stage distribution housing 7, B-side second-stage distribution housing 8, A-side second-stage flow sharing grille 9, B-side second-stage flow sharing grille 10, A-side second-stage distribution grille 11, side B two-stage Step distribution grid 12, rectangular outlet pipe 13, outlet rounded 14, outlet circular pipe 15, A-side mixing / rectification / baffle device 16, B-side mixing / rectification / baffle device 17;

[0027] The inlet variable-diameter rectangular pipe 1 is connected...

Embodiment 2

[0039] The general structure of this embodiment is the same as that of Embodiment 1, the difference is that:

[0040] The mixing / rectification / baffle device in the rectangular cross-section reducing elbow has 8 single pieces on one side;

[0041] The included angle between the projection of the line connecting the center point of the fluid inlet section and the center point of the outlet section of the lateral rectangular cross-section reducing elbow on the horizontal plane and the direction in which the fluid enters the second-order one-inlet and five-outlet equalizer system ∠A=36.32°, B Angle ∠B=36.32° between the projection of the line connecting the center point of the fluid inlet section and the center point of the outlet section of the side rectangular cross-section reducing elbow on the horizontal plane and the direction in which the fluid enters the second-order one-inlet and five-outlet equalizer system

[0042]The ratio of the inlet cross-sectional area of ​​the rect...

Embodiment 3

[0048] The general structure of this embodiment is the same as that of Embodiment 1, the difference is that:

[0049] There are 25 pieces of monomers on one side of the mixing / rectification / baffle device in the rectangular cross-section reducing elbow;

[0050] The included angle between the projection of the line connecting the center point of the fluid inlet section and the center point of the outlet section of the lateral rectangular cross-section reducing elbow on the horizontal plane and the direction in which the fluid enters the second-order one-inlet and five-outlet equalizer system ∠A=15.35°, B Angle ∠B=16.46° between the projection of the line connecting the center point of the fluid inlet section and the center point of the outlet section of the side rectangular cross-section variable-diameter elbow on the horizontal plane and the direction in which the fluid enters the second-order one-inlet and five-outlet equalizer system

[0051] The ratio of the inlet cross-sec...

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PUM

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Abstract

A two-level one-inlet and five-outlet uniform distributing device system is provided with one inlet and five outlets and comprises a rectangular inlet reducer pipe, a first-level distributing shell, a first-level flow equalizing grid, a first-level distributing grid, rectangular-section bent reducer pipes, second-level distributing shells, second-level flow equalizing grids, second-level distributing grids, a plurality of rectangular outlet pipes, a plurality of outlet square-to-round parts, a plurality of outlet round pipes and mixing / rectifying / baffling devices. The rectangular inlet reducer pipe is connected with the first-level distributing shell internally provided with the first-level flow equalizing grid and the first-level distributing grid. The first-level distributing shell is further connected with the two rectangular-section bent reducer pipes. The other ends of the rectangular-section bent reducer pipes are connected with the second-level distributing shells. The other ends of the second-level distributing shells are connected with the rectangular outlet pipes, the outlet square-to-round parts and the outlet round pipes. The two-level one-inlet and five-outlet uniform distributing device system has the advantages of being suitable for a large coal-fired boiler coal pulverizing system with five burners on each layer, uniformly distributing pulverized coal flow to the five burners continuously and stably, and making the air volumes, the pulverized coal quantities and pulverized coal particle size distribution be identical.

Description

technical field [0001] The invention relates to a pulverizing system of a large-scale coal-fired boiler, in particular to a two-stage one-inlet and five-outlet equalizer system. Background technique [0002] When the coal-fired boiler adopts the direct-blowing pulverizing system, the coal mill usually supplies the coal powder carried by the primary air to multiple burners on a certain layer of the boiler. Generally, 4 to 8 burners are arranged side by side, and each burner is required to The air volume, pulverized coal volume, and pulverized coal particle size distribution of the burner are the same. The function of the pulverized coal distributor system is to evenly distribute the powdered airflow to multiple primary air pipes and burners; when the number of burners is 4 or 8, it can be easily divided into two by multiple passes To obtain a uniform airflow containing pulverized coal, when the number of burners is 5, it is difficult to obtain an evenly distributed airflow. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23K1/00F23K3/02
Inventor 冯兆兴栾好利王智王键闻王存旭庞开宇
Owner SHENYANG INST OF ENG