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Coal blockage preventing for raw coal bin device in fuel electric plant

A technology for thermal power plants and raw coal bunkers, which is applied in packaging, transportation, packaging, containers, etc., and can solve problems such as complex structures, greatly increased costs, and untested blocking effects

Inactive Publication Date: 2013-05-22
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has not been generally accepted due to the complexity of the structure and the large increase in cost
Its declogging effect is yet to be tested

Method used

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  • Coal blockage preventing for raw coal bin device in fuel electric plant
  • Coal blockage preventing for raw coal bin device in fuel electric plant

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] In order to effectively solve the problem of coal burning blockage, the present invention breaks the basis of pulverized coal bridging at the constriction of the coal pipeline from three aspects.

[0021] (1) Use a rectangular cross-section pipe, and the shrinkage of the pipe shrinks step by step.

[0022] Such as figure 1 As shown, the shrinkage part of the pipeline is divided into first and second shrinkage sections 1 and 2 to complete, and each shrinkage section only makes the pipeline shrink on both sides (the prior art is that four sides shrink at the same time), at first, the first pipe connected with the above The shrinkage section 1 shrinks the large section square into a rectangle; then connects the second shrinkage section 2, and the second shrinkage section shrinks the rectangle into a small section square. On the one hand, this structural design reduces the physical basis for coal-fired bridging in one direction, avoids the possibility of coal-burning bridg...

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Abstract

The invention discloses a coal blockage preventing device for a raw coal bin in a fuel electric plant. The coal-blockage preventing device is characterized in that an easy coal blockage part at the minimum necking part at the lower part comprises a first constricting segment, a second constricting segment; after being connected with an upper pipeline, the first constricting segment constricts a large-section square into a rectangle through a first constricting slope with two symmetric sides, and then is connected with the second constricting segment; the second constricting segment constrictsthe first constricting segment rectangle into a small-section square through a second constricting slope with two symmetric sides. In the invention, a rectangular varying-area pipe is used and the pipe constricting part is completed through upper and lower stages, the pipe is constricted in one direction (two sides) in each stage, the bridging of the fire coal in four sides can be avoided, and the bridging probability is reduced by 50%.

Description

technical field [0001] The invention relates to a coal-blocking-free device at the narrowest part of the cross-section of the pipeline in the lower part of the raw coal bunker in a coal-fired transmission system of a thermal power plant. Background technique [0002] In recent years, the frequent occurrence of coal blockages in the raw coal bunkers of thermal power plants can be directly attributed to the low quality of coal combustion, including moisture in pulverized coal, excessive clay content, and freezing and agglomeration. But the main reason is also the bridging of low-quality pulverized coal at the pipe constriction due to the narrowing of the pipe. To solve this problem, firstly, the quality of pulverized coal should be controlled, and secondly, from the source, the phenomenon of pulverized coal bridging should be avoided through innovative structural design. [0003] Among the existing solutions, external force (manual or mechanical) shocking after coal blocking ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D88/64B65D88/68
Inventor 左宏
Owner XI AN JIAOTONG UNIV