Parameter measurement and balancing experiment of primary air and powder in a W-flame boiler

JIN Fei; YAN Weiping; SU Hongliang; XIA Yang

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Parameter measurement and balancing experiment of primary air and powder in a W-flame boiler

更新时间：2025-09-28

- Parameter measurement and balancing experiment of primary air and powder in a W-flame boiler
- Thermal Power Generation Vol. 42, Issue 11, Pages: 54-59(2013)
- 作者机构：
  
  1. 华北电力大学能源动力与机械工程学院
  2. 北京能为科技发展有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM621.2
- Published：2013
- 稿件说明：
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JIN Fei, YAN Weiping, SU Hongliang, et al. Parameter measurement and balancing experiment of primary air and powder in a W-flame boiler[J]. Thermal power generation, 2013, 42(11): 54-59.
DOI：

JIN Fei, YAN Weiping, SU Hongliang, et al. Parameter measurement and balancing experiment of primary air and powder in a W-flame boiler[J]. Thermal power generation, 2013, 42(11): 54-59. DOI：

摘要

结合德国PROMECON公司开发的Mecontrol Coal在线风粉测量系统

介绍了通过静电交相关法结合微波法测量煤粉颗粒速度和煤粉质量流量的原理

并通过试验分析了粒径、测点位置等因素对测量精度的影响。以某台2×350MW机组W型火焰锅炉中速磨煤机直吹系统作为试验对象

使用该系统测量其风粉参数

并通过调节各一次风管缩孔开度实现了风粉均匀性调平

改善了锅炉燃烧效果。若经缩孔调平后

煤粉质量流量在风量均匀的情况下偏差仍较大

则应检查磨煤机分离器和分配器

改善煤粉进入各管道前的均匀性。

Abstract

Combined with the Mecontrol Coal online wind powder measuring system developed by German PROMECON company

the principle of using electrostatic cross-correlation method and microwave method to measuring speed and mass flow of pulverized coal was presented.Moreover

the effect of such factors as particle size and measuring point position on the measurement precision was analyzed through experiment.Taking direct blowing system of the medium speed coal pulverizer of a 2×350MW unit W-flame boiler as the research object

the parameters of air and coal mixture were measured.By adjusting the opening degree of shrinkage hole on each primary air tube

the uniformity of air and coal mixture was balanced and the combustion was improved.After the opening degree regulation

if the mass flow deviation of pulverized coal is still large under uniform air volume condition

it suggests that the separator and distributor in coal mill should be checked

to improve the uniformity of coal before it enters each tube.

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