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Gas analyzer with synchronization of differential pressure flow measurement and extraction

A gas analysis and flow measurement technology, which is applied to measurement devices, sampling devices, and fluid flow detection by measuring differential pressure. , the effect of reducing equipment cost and improving accuracy

Pending Publication Date: 2018-08-17
SHANGHAI YUNYU INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complexity of the gas flow in the pipeline, there is a difference between the flow data provided by the gas flowmeter and the actual gas flow at the sampling point of the gas analysis device. As a result, the accuracy of the measurement data of the gas analysis device is low.
[0006] At the same time, the existing gas sampling equipment, whether it is single-point sampling or multi-point sampling, uses recoil gas to ensure that the sampling pipeline is not blocked, which requires a lot of gas and energy consumption.

Method used

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  • Gas analyzer with synchronization of differential pressure flow measurement and extraction
  • Gas analyzer with synchronization of differential pressure flow measurement and extraction
  • Gas analyzer with synchronization of differential pressure flow measurement and extraction

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Embodiment approach 1

[0033] This embodiment provides a gas analysis device with simultaneous flow measurement and extraction, such as figure 1 As shown, the square total pressure measuring tube 1 and static pressure measuring tube 2, the pressure measuring part 4 (preferably Rosemount differential pressure transmitter), the gas analysis part 5 (preferably extracting type optical gas analyzer), a gas collection tube 3 with a diameter of 1 cm, a server-based computing processor (not shown in the figure), a first cleaning part 12 (preferably using a cleaning rod with irregular motion) and a second The second dust cleaning part 13 (preferably using a dust cleaning rod with irregular movement), the total pressure measurement tube 1 and the static pressure measurement tube 2 are welded and fixed together back to back, the total pressure measurement tube 1 is placed against the wind, and the static pressure measurement tube 2 is not Placed against the wind, both ends are closed ends, the pressure measuri...

Embodiment approach 2

[0038] This embodiment is a further improvement of Embodiment 1. The main improvement is that in Embodiment 1, since the first measurement probe 401 of the pressure measurement component 4 is located in the full pressure measurement tube 1, the gas collection tube of the gas analysis component 5 3 is also communicated with the total pressure measuring tube 1. When the first measuring probe 401 measures the gas pressure in the total pressure measuring tube 1, the gas flow rate and The pressure will cause inaccuracy of the pressure in the total pressure measuring tube 1 measured by the first measuring probe 401 ; however, in this embodiment, the above defects can be effectively avoided.

[0039] Specifically, as figure 2 , in the gas analysis device with differential pressure flow measurement and extraction synchronous in the present embodiment, the valve part 11 connected with the arithmetic processor signal is also set on the gas collection pipe 3, when the pressure measuring...

Embodiment approach 3

[0043] This embodiment is a further improvement of Embodiment 2. The main improvement is that, in Embodiment 2, there is only one total pressure measuring tube 1 and one static pressure measuring tube 2 in the measurement space. The flow rate, air pressure, and composition of different positions in the space may be different and change frequently. If the measuring tube is only installed at one measuring point in the measuring space, the measurement and analysis results of the pressure measuring part 4 and the gas analyzing part 5 will inevitably be different. Accurate; and this implementation mode can avoid above-mentioned defect, specifically:

[0044] Such as image 3 , in this embodiment, four total pressure measurement tubes 1 and four static pressure measurement tubes 2 are arranged in different positions in the same measurement space in all directions; two total pressure measurement tubes 1 are connected to the total pressure by a total pressure measurement branch pipe 6...

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Abstract

The invention relates to the field of gas analysis equipment and discloses a gas analyzer with synchronization of differential pressure flow measurement and extraction, characterized in that a full-pressure measuring tube (1) is arranged windward, a static pressure measuring tube (2) is arranged in non-windward manner, a first measuring probe (401) of a pressure measuring part (4) is connected with the full-pressure measuring tube (1) directly or through a gas pipe; a second measuring probe (402) is connected with the static pressure measuring tube directly or through a gas pipe; a gas analysis part (5) is communicated with the full-pressure measuring tube and / or the static pressure measuring tube through a gas acquisition tube (3); an operational processor is in signal connection with a pressure measuring part. The gas analysis part and the differential pressure measuring part are arranged in the same analyzer to provide synchronization of analytic gas extraction sampling and gas pressure measurement sampling, so that correlation between flow measurement and gas analytical extraction is greatly improved.

Description

technical field [0001] The invention relates to the field of gas analysis devices, in particular to a gas analysis device for synchronous differential pressure flow measurement and extraction. Background technique [0002] With the increasing requirements for environmental protection, the measurement, analysis and detection of industrial exhaust gas is a necessary work for environmental protection in the industrial field. For example, for the measurement and analysis of dust, sulfide, nitride and ammonia components in industrial exhaust gas. At present, in addition to direct optical or electromagnetic wave online measurement, extractive measurement is an important means. Whether it is the burning method or the optical measurement and analysis method in the extraction measurement, it is necessary to extract the gas in the measured space into the analysis instrument through the pipeline. [0003] The most important metering and extraction device in extraction is the peristal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/24G01F1/34G01D21/02G01N33/00G01N21/84
CPCG01D21/02G01F1/34G01N1/24G01N21/84G01N33/0004
Inventor 胡桂标
Owner SHANGHAI YUNYU INTELLIGENT TECH CO LTD
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