Suggestions on measurement and compensation calculation of pressure difference in air box and furnace

LIU Fuguo; PENG Yanchao; ZHAO Wanfeng

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Suggestions on measurement and compensation calculation of pressure difference in air box and furnace

Thermal Power Generation Vol. 45, Issue 6, Pages: 120-124(2016)

更新时间：2025-09-28

- Suggestions on measurement and compensation calculation of pressure difference in air box and furnace
- 作者机构：
  
  1. 国网山东省电力公司电力科学研究院
  2. 国电石横发电有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK223
- Published：2016
- 稿件说明：
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LIU Fuguo, PENG Yanchao, ZHAO Wanfeng. Suggestions on measurement and compensation calculation of pressure difference in air box and furnace[J]. Thermal Power Generation, 2016, 45(6): 120-124.
DOI：

LIU Fuguo, PENG Yanchao, ZHAO Wanfeng. Suggestions on measurement and compensation calculation of pressure difference in air box and furnace[J]. Thermal Power Generation, 2016, 45(6): 120-124. DOI：

摘要

在锅炉风烟系统中

大多数差压测量均无需对取压管路空气柱静差压进行补偿

但在测量风箱-炉膛差压时

变送器两侧取压点在垂直方向上跨越的距离较大

取压管内空气柱静差压与实际测量差压数量级相同

因此

必须对测量结果进行补偿。但是

目前的风箱炉膛差压测量系统均未引入空气柱静差压的补偿

从而导致该差压的表盘显示值比设计值偏低较多

使运行人员误认为未能建立起正常的风箱炉膛差压

而采取错误的运行操作措施。建议尽快引入风箱炉膛差压的补偿计算

以便为运行人员提供准确的监控信息。

Abstract

Most differential pressure measurements needn't to be compensated with air static differential pressure in boiler air and flue gas system

but in the measurement of air box-furnace differential pressure

the distance in the vertical direction between the connections in ducts on both sides of the transmitter is remarkable

the air static differential pressure is in the same order of magnitude with the actual measured differential pressure.Therefore

the compensation of the measurement results is necessary.However

at present

domestic power plants have not introduced compensation in measurement of air box-furnace differential pressure

which causes the measurement values is much lower than the design ones

misguiding the operation personnel think it failed to establish the normal air box-furnace differential pressure and act wrong.It suggests introducing measurement compensation for the air box-furnace differential pressure as soon as possible

so that the operators can achieve accurate monitoring information.

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