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Method and system for detecting dissolved hydrogen in water

A technology for detecting water and hydrogen, which is applied in the direction of testing water, material inspection products, etc., can solve the problems of measurement errors, easily polluted electrodes, and high replacement costs, and achieve the effect of small measurement errors.

Active Publication Date: 2015-05-27
刘忠 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. Due to the interference of oxygen and the influence of flow, there are errors in the measurement;
[0009] 2. The membrane and electrolyte need to be replaced regularly, and the maintenance amount is increased, and the maintenance cost is high;
[0010] 3. The electrode is easily polluted, the life of the electrode is short, and the replacement cost is high

Method used

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  • Method and system for detecting dissolved hydrogen in water
  • Method and system for detecting dissolved hydrogen in water
  • Method and system for detecting dissolved hydrogen in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] see figure 1 The system for detecting dissolved hydrogen in water of the present invention includes a water sample inlet 1, a valve 2, a constant flow tank 3, a flow meter 4, a constant temperature water jacket 5, an air inlet pipe 11, a vacuum separation chamber 6, a thermal conductivity meter 7, and an air saturator 8 And water sample outlet 9.

[0032] The water sample inlet 1 is connected to the inlet port of the valve 2 through a pipe, and the outlet port of the valve 2 is connected to the constant flow tank 3 and the water sample outlet 9 in turn through a pipe, and the other outlet port of the valve 2 is connected to the inlet of the flow meter 4 , and the outlet of the flow meter 4 is connected to the inlet of the vacuum separation chamber 6 through the constant temperature water jacket 5, one outlet of the vacuum separation chamber 6 is connected with the water sample outlet 9 through the overflow tank 10 through a pipeline, and the other of the vacuum separati...

Embodiment 2

[0034] see figure 2 , this embodiment is similar to Embodiment 1, the difference is that the system of this embodiment also includes a Faraday electrolytic cell 12 and a zero point correction valve 13, and the Faraday electrolytic cell 12 is placed between the outlet of the flowmeter 4 and the inlet of the constant temperature water jacket 5 , The zero point correction valve 13 is placed downstream of the constant temperature water jacket.

Embodiment 3

[0036] image 3 Show the vacuum separation chamber of the present invention, this vacuum separation chamber is made up of Venturi tube 100 and separation bell jar 200, and separation bell jar 200 covers outside Venturi tube 100, and Venturi tube comprises liquid inlet port 101, liquid outlet port 102 and Gas outlet 103 .

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PUM

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Abstract

The invention provides a method and system for detecting dissolved hydrogen in water. The method comprises the following steps of: a, stabilizing the temperature of a water sample containing hydrogen between 20 DEG C and 30 DEG C; b, separating mixed gas containing the hydrogen from the water sample obtained in the step a; and c, analyzing the mixed gas obtained in the step b. The detection system disclosed by the invention is less prone to being disturbed by oxygen and flow, so that the measurement error is few.

Description

technical field [0001] The invention relates to chemical detection technology, in particular to a method and system for detecting dissolved hydrogen in water. Background technique [0002] In modern industry, the quality of water vapor in the thermal system is an important factor affecting the safe and economical operation of thermal equipment such as boilers and steam turbines. Poor water quality will lead to metal corrosion, and corrosion products will make the water quality worse, which further aggravates metal corrosion and produces scaling. This vicious cycle leads to shortened service life of thermal equipment, resulting in significant economic losses and potential safety hazards. [0003] In order to prevent corrosion and scaling of boilers and thermal system equipment, the water vapor quality should reach certain standards. To see whether it meets the standards, it is necessary to use instruments or chemical analysis methods to measure various water vapor qualities...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/18
Inventor 刘忠李炜王应高
Owner 刘忠