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Method and device for detecting water quality

A technology of water quality detection and detection module, which is applied in the direction of measuring device, transmittance measurement, material analysis through optical means, etc., can solve the problems that engineers cannot know, and achieve the goals of avoiding attenuation, high measurement accuracy and prolonging service life Effect

Active Publication Date: 2011-05-18
FOCUSED PHOTONICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that when the pressure of the purge gas is insufficient, the detection device is in an abnormal working state, but the engineering personnel cannot know

Method used

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  • Method and device for detecting water quality
  • Method and device for detecting water quality
  • Method and device for detecting water quality

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Such as figure 2 As shown, a water quality detection device includes a light source 11, a sample pool 21, a detector 31, and an analysis unit, as well as a gas purging unit and a linkage unit.

[0045] The light source 11 and the detector 31 are on the same side of the sample pool, and the distance between the light source 11 and the water sample to be tested in the sample pool 21 is relatively large, and the water mist generated by the water sample to be tested has almost no influence on the light source 11 . The distance between the detector 31 and the water sample to be tested in the sample cell 21 is small, and the water mist generated by the water sample to be tested has a great influence on the detector 31 .

[0046] The gas purging unit includes an extraction gas source 203 and a jet pump 202 . When the jet pump 202 works, the gas between the sample pool 21 and the detector 31 is drawn out, so that the gas in the measurement environment continuously passes thro...

Embodiment 2

[0058] Such as Figure 4 As shown, a water quality detection device includes a light source 11, a sample pool 21, a detector 31, and an analysis unit, as well as a gas purging unit and a linkage unit.

[0059] The light source 11 and the detector 31 are on the same side of the sample pool, and the distance between the light source 11, the detector 31 and the water sample to be measured in the sample pool 21 is relatively small, and the water mist produced by the water sample to be measured has a great impact on the light source 11 and the detector 31. Greater impact.

[0060] The gas purging unit includes a gas source and a filter 101 . After the gas provided by the gas source is filtered by the filter 101, the space between the sample cell 21, the detector 31 and the light source 11 is purged, and the flowing gas takes away the water mist generated by the water sample to be tested, and the water mist generated in the water sample to be tested A flowing gas isolation layer i...

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Abstract

The invention discloses a method for detecting water quality, comprising the following steps: a. a light source emits a testing ray to illuminate the water sample to be detected and the water sample to be detected emits an emergent light; b. a detector receives the emergent light; a gas is used for purging the space between the water sample to be detected and the detector, thus taking away the water mist generated by the water sample to be detected; simultaneously, the gas blocks the penetration of the water mist and protects the detector; and c. an analysis unit processes the receiving signal of the detector, thus obtaining the parameter of the water sample to be detected; in the measurement process, whether the purging gas between the water sample to be detected and the detector meets the requirement or not is judged; if so, the measurement is continued; if not, an isolation body is arranged between the water sample to be detected and the detector, thus blocking the water mist generated by the water sample to be detected. The invention also discloses a device for executing the method. The method and the device have the advantages of high measurement precision, long service life of the detector and the like, and can be widely applied to the non-contact water quality detection.

Description

technical field [0001] The invention relates to water quality detection, in particular to a method and device for optical water quality detection. Background technique [0002] In non-contact water quality testing, the light source and detector are on one side of the water sample to be tested. During measurement, the measurement light emitted by the light source is irradiated on the water sample to be tested, and the water sample to be tested emits outgoing light; the detector is used to receive the outgoing light, and the analysis unit processes the signal received by the detector to obtain the water sample to be tested. parameter. In the above detection process, if the temperature of the water sample to be tested is high, the water mist generated by the water sample to be tested will enter between the water sample to be tested and the detector. The water mist not only attenuates the measurement light and outgoing light, but also It will condense on the detector and serio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/59G01N21/15
Inventor 孙峰李岭项光宏王晓宇韦俊峥
Owner FOCUSED PHOTONICS