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Equipment and method for optical analysis of fluids

An optical analysis and fluid technology, applied in the field of fluid analysis, can solve problems such as complex structure, high cost, poor stability, etc., and achieve the effects of high measurement accuracy, accurate fluid analysis, and stable measurement optical path

Active Publication Date: 2011-12-21
FOCUSED PHOTONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 2. The cost is high, the purge gas (such as high-purity nitrogen) provided by the purge unit is expensive, and the annual cost exceeds 20,000 yuan
[0013] 4. Restricted by the measurement principle, the response time of the gas sensor is long and cannot be measured in real time
[0014] 5. Poor stability, the performance of the gas sensor decreases rapidly with the increase of use time
[0015] 6. The life of the gas sensor is short, and the sensor that is constantly replaced also increases the cost of measurement
[0016] 7. The structure is complex and needs to be equipped with nitrogen generators, gas sensors and other components

Method used

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  • Equipment and method for optical analysis of fluids
  • Equipment and method for optical analysis of fluids
  • Equipment and method for optical analysis of fluids

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] figure 2 A basic structure diagram of the optical analysis device for fluid according to the embodiment of the present invention is schematically given. like figure 2 As shown, the optical analysis equipment includes:

[0072] The light source, which is used to emit measurement light, is arranged in the light receiving unit 14; the light source can be a laser, a xenon lamp, or the like.

[0073] A detector, such as a photoelectric sensor, is arranged in the light receiving unit 15, and the detector is used to combine the received measurement light with the fluid (gas) in the first measurement area B1 and the second measurement area (including B21 and B22). or liquid) after the action of the optical signal is converted into an electrical signal, and transmitted to the analysis unit (not shown). The light sources and detectors are installed on one side or both sides of the pipeline 11 through mechanical connection structures (such as flanges 31, 32). The fluid (gas ...

Embodiment 2

[0088] According to the application example of the optical analysis equipment and method in Embodiment 1 of the present invention in the iron and steel industry, it is specifically applied to the analysis of the O2 content in the gas in front of the gas cabinet.

[0089] Figure 4 The basic structural diagram of the optical analysis device is schematically given. like Figure 4 As shown, the optical analysis equipment includes:

[0090] The light source in the analysis device adopts a laser, which is arranged in the light emitting unit 14, and the wavelength of the measurement light emitted by the laser includes the wavelength corresponding to the absorption spectrum line of O2, such as 763nm.

[0091] The detector adopts a photoelectric sensor, which is arranged in the light receiving unit 15, and the detector is used to pass the measurement light through the first measurement area B1 (the optical path is L1) and the second measurement area (including B21 and B22, The opti...

Embodiment 3

[0101] According to the application example of the optical analysis equipment in embodiment 1 of the present invention in the iron and steel industry, it is specifically applied in the analysis of the calorific value of gas in front of the heating furnace of the steel rolling mill. The calorific value of the converter gas is calculated by measuring the content of CO in the converter gas on-line (that is, on-site), and provides calorific value data for the control of the combustion air-fuel ratio of the heating furnace.

[0102] Figure 5 The basic structural diagram of the optical analysis device is schematically given. like Figure 5 As shown, the optical analysis equipment includes:

[0103] The light source is a laser, which is arranged in the light emitting unit 14, and the wavelength of the measurement light emitted by the laser includes the wavelength corresponding to the absorption spectrum line of CO, such as 1583nm.

[0104] The detector adopts a photoelectric sens...

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Abstract

The invention provides optical analyzing equipment for a fluid, which comprises a light source, a detector, a fluid replacing device and an analyzing unit, wherein the light source is used for emitting measuring light; the detector is used for converting an optical signal of the received measuring light acting with fluids in a first measuring area and a second measuring area into an electric signal, and conveying the electric signal to the analyzing unit; a fluid in a pipeline passes through the first measuring area; the fluid replacing device comprises a fluid passage; the fluid passage is used for transmitting a fluid at the upper course of the first measuring area in the pipeline to the second measuring area and replacing the fluid; and the analyzing unit is used for processing the received electric signal and analyzing the fluid in the pipeline. The equipment has the advantages of high analysis precision, low cost and the like.

Description

technical field [0001] The present invention relates to fluid analysis, in particular to optical analysis equipment and method for fluid. Background technique [0002] In the fields of metallurgy, chemical industry, cement, power generation, water quality monitoring, etc., on-site measuring devices are widely used to analyze the fluid in the process pipeline. The measured fluid parameters are helpful for optimizing the production process, improving production efficiency, saving energy and reducing pollutants. Emissions are important. [0003] like figure 1 As shown, a commonly used on-site gas measuring device, the light emitting unit 14 and the light receiving unit 15 are arranged on both sides of the process pipeline 10, and the gas to be measured 11 is isolated through the windows 16 and 17 at the same time; wherein, the light source 2 is arranged at Inside the light emitting unit 14 , the detector 20 is disposed inside the light receiving unit 15 . The measurement bea...

Claims

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Application Information

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IPC IPC(8): G01N21/31G01N21/53
Inventor 俞大海陈生龙孙敬文
Owner FOCUSED PHOTONICS
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