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System for detecting PH value of thermal power plant

A PH value, thermal power plant technology, applied in the field of thermal power plants, can solve problems such as inaccurate values, PH meter failure, waste of resources and manpower, etc., to achieve good sealing and improve accuracy

Active Publication Date: 2021-07-30
华能伊敏煤电有限责任公司汇流河热电分公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is that after the pH meter is installed on the desulfurization tower through the pipeline, because the desulfurization liquid in the pipeline does not flow, lime will precipitate and gather in the pH meter after a long time, causing numerical inaccuracy; often It will cause the PH meter to fail or even be damaged. It cannot accurately feedback the PH value and needs to be replaced frequently, resulting in a waste of resources and manpower.

Method used

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  • System for detecting PH value of thermal power plant
  • System for detecting PH value of thermal power plant
  • System for detecting PH value of thermal power plant

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Experimental program
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Effect test

Embodiment 1

[0029] refer to Figure 1~4 , the present embodiment provides a system for detecting the pH value of a thermal power plant, including a fixed flange 100 and a sampling unit 200, wherein the fixed flange 100 is arranged on the side wall of the desulfurization tower, generally welded on the bottom of the desulfurization tower and people can The operation reaches a height where the pipeline of the fixed flange 100 runs through the interior of the desulfurization tower, that is, the slurry inside the desulfurization tower can be discharged through the connecting pipeline of the fixed flange 100 . The sampling unit 200 includes a sampling piece 201 connected to the fixed flange 100 by a flange, that is, the sampling piece 201 is provided with a mating flange connected with the fixed flange 100, and is sealed, and the sampling piece 201 is cylindrical. The sampling part 201 includes a sampling end 201a inside the desulfurization tower and a take-out end 201b outside the desulfurizat...

Embodiment 2

[0043] refer to Figure 1~5 , is the second embodiment of the present invention, this embodiment is based on the previous embodiment, and differs from the previous embodiment in that:

[0044] Taking liquid directly through the moving part 203 may cause the slurry to flow out. Therefore, a sampling cylinder 206 needs to be provided in the moving part 203 to transfer the slurry in the moving part 203 into the sampling cylinder 206 for sampling.

[0045] Wherein, one end of the sampling cylinder 206 close to the disk 203a is provided with a diversion hole 206a corresponding to the through hole 203c, and the diversion hole 206a here closely fits with the through hole 203c during the sampling process, and the other part of the sampling cylinder 206 One end is sealed, and a sampling port 206b is opened on the side of the sampling cylinder 206, and the opening of the sampling port 206b faces upward.

[0046] Further, a round table 206c is provided on the side of the circumference o...

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Abstract

The invention discloses a system for detecting the PH value of a thermal power plant. The system comprises a fixed flange and a sampling unit, wherein thefixed flange is arranged on the side wall of a desulfurization tower, and a pipeline of the fixed flange penetrates through the interior of the desulfurization tower; the sampling unit comprises a sampling piece connected with the fixed flange through a flange, the sampling piece is cylindrical, and the sampling piece comprises a sampling end located inside the desulfurizing tower and a taking-out end located outside the desulfurizing tower; and the sampling end is connected with a liquid inlet piece, a liquid inlet hole is formed in the liquid inlet piece, a ball groove is formed in the liquid inlet hole, a ball core is arranged in the ball groove, and a round hole is formed in the ball core. Parameters such as the density, the pH value and the chloride ion content of slurry in the desulfurization tower can be measured, and the accuracy of a measurement result is improved.

Description

technical field [0001] The invention relates to the field of thermal power plants, in particular to a system for detecting pH values ​​in thermal power plants. Background technique [0002] In the desulfurization and denitrification process of thermal power plants, the desulfurization tower mainly desulfurizes the flue gas in the gypsum board production process through the desulfurization liquid, and the treated flue gas is discharged outside. After the desulfurization liquid is used for a period of time, the pH value will decrease. Add alkaline substances such as calcium carbonate or sodium hydroxide to the liquid to continue the desulfurization reaction, and use a pH meter to measure the pH value of the desulfurization liquid. [0003] However, after the pH meter is installed on the desulfurization tower through the pipeline, because the desulfurization liquid in the pipeline does not flow, lime will precipitate and accumulate in the pH meter after a long time, resulting i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/10G01N9/00G01N27/27
CPCG01N1/10G01N9/00G01N27/27G01N2001/1031
Inventor 李国金温立红吴玉峰丁文龙李菲张志新韩贺勋
Owner 华能伊敏煤电有限责任公司汇流河热电分公司