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Single-light-source differential CO2 in-situ gas measuring device, system and method

A technology of gas measurement and CO2, which is applied in the direction of measuring devices, heat measurement, and material analysis through optical means, etc., can solve problems such as temperature drift of optical devices, zero point drift of detectors, and fluctuations in light source luminous power, so as to eliminate temperature drift, Improved accuracy and wide-ranging effects

Pending Publication Date: 2022-06-24
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the existing NDIR-CO 2 The problems of light source luminous power fluctuation, optical device temperature drift and detector zero drift in the gas measurement device

Method used

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  • Single-light-source differential CO2 in-situ gas measuring device, system and method
  • Single-light-source differential CO2 in-situ gas measuring device, system and method
  • Single-light-source differential CO2 in-situ gas measuring device, system and method

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Experimental program
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Embodiment 1

[0035]This embodiment discloses a single light source differential CO2 in-situ gas measurement device, such as figure 1 As shown, it includes a light source module 2, a detection module 3, a reference gas chamber 7, a measurement gas chamber 8, and a data processing module;

[0036] like image 3 As shown, the light source module 2 includes a light source 13, a single lens 14, a beam expander 15, a light source adapter plate 12, a light source fixing plate 20, a focusing barrel 19, and a light source adapter barrel 18; in this embodiment, the light source focusing barrel 19. The light source adapter cylinder 18 is a cylindrical structure; the light source adapter plate 12 and the light source fixing plate 20 are both circular cake structures. There is a mounting hole in the center of the light source fixing plate 20, the light source 13 is fixed in the mounting hole (the fixing method can be screwed, or glued), the output end of the light source adapter plate 12 is electrical...

Embodiment 2

[0043] In this embodiment, the device disclosed in Embodiment 1 is integrated on the base, and the light source adapter tube 18 and the detection adapter tube 21 are fixed on the base through brackets. The power supply 5, the data processing module, the controller, etc. are all fixed on the base for easy movement and storage.

Embodiment 3

[0045] This embodiment provides a specific method of use based on the device of Embodiment 1, including the following steps:

[0046] Step 1, equipment assembly, assemble the light source module (2), detection module (3), reference gas chamber (7), and measurement gas chamber (8) in place; after the reference gas chamber (7) is filled with inert gas (N2, etc.) Sealed, the measuring gas chamber (8) is connected to the gas to be measured in real time through the solenoid valve and the gas pump;

[0047] Step 2, start the power supply (5), the light source (13) is energized, adjust the light source fixing plate (20), so that the light output point of the light source (13) is located at the focal point of the single lens (14); the measuring detector (22), the reference The detector (23) is energized, and the cover (25) is adjusted so that the light surfaces of the measurement detector (22) and the reference detector (23) are located at the focal point of the corresponding lens; th...

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Abstract

The single-light-source differential CO2 in-situ gas measurement device comprises a light source module, a detection module, a reference gas chamber, a measurement gas chamber and a data processing module, infrared light output by the light source module is expanded by the beam expander; and the incident ends of the reference gas chamber and the measuring gas chamber are fixed between the light source module and the detection module. The detection module is provided with a heating piece and a temperature detector. The single-light-source beam expander device is adopted, the same light beam enters the measurement channel and the reference channel at the same time, measurement is conducted synchronously, the single-light-source differential detection technology is achieved, and the structure is simple; the double-channel structural design can effectively reduce the influence caused by light weakness and the like, and the measurement accuracy of the device is improved; the temperature controller is adopted to keep the working temperature of the photovoltaic detector stable, the influence caused by temperature drift of the photovoltaic detector can be eliminated, the working temperature of the photovoltaic detector can be controlled to be stabilized within the temperature range where signal output is optimal, and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of non-dispersive infrared gas analysis, in particular to a single light source differential CO2 in-situ gas measurement device and measurement method. Background technique [0002] With the improvement of people's living standards and the development of national science and technology, climate change has gradually become one of the major challenges facing the world. Melting glaciers, rising sea levels, and declining food production occur frequently, and the root cause is greenhouse gas emissions caused by human activities, of which carbon dioxide is one of the main components of greenhouse gases. Therefore, controlling the total amount of carbon dioxide emissions and achieving carbon cycle balance is of great significance for coping with global climate change. [0003] At present, CO2 gas detection technologies mainly include gas chromatography, electrochemical method, catalytic combustion method, spectros...

Claims

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Application Information

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IPC IPC(8): G01N21/3504G01N21/01G01K13/00
CPCG01N21/3504G01N21/01G01K13/00G01N2021/0112
Inventor 汪磊刘崎王震宇花昌义王明龙吴磊
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI