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Device and method preventing gas sampling channel blockage

A gas sampling and gas technology, which is applied in the field of devices to prevent gas sampling passage blockage, can solve the problems of easy pollution, high professional technical requirements, large business volume, etc., and achieve the effect of improving fluency

Active Publication Date: 2019-02-05
HEFEI INST FOR PUBLIC SAFETY RES TSINGHUA UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the influence of suspended matter such as dust, particles or aerosols in the air, the gas sampling passage of gas composition detection devices or equipment is often blocked, resulting in reduced performance or even unusable detection devices or equipment
In addition, in traditional gas detection, the optical device is usually exposed to the gas to be measured, which is highly susceptible to negative effects such as contamination, corrosion, etc., which can interfere with the measurement results
Therefore, according to the degree of influence of suspended solids in the gas environment and the physical and chemical properties of the gas to be measured, traditional gas composition detection devices require regular maintenance, including dust removal and even replacement of accessories for gas sampling channels.
Relevant operation and maintenance work often requires dismantling of devices or equipment, which often requires high professional skills, and facing a large-scale deployment of the Internet of Things detection system, the business volume is huge, resulting in high operation and maintenance costs

Method used

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  • Device and method preventing gas sampling channel blockage
  • Device and method preventing gas sampling channel blockage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, a device for preventing blockage of a gas sampling passage is an integrated structure, and includes a first gas hose 11 with one end as the first end of the device, and a second gas hose 11 with one end as the second end of the device. The gas hose 12, the gas detection pipeline 3, the other end of the first gas hose 11 and the other end of the second gas hose 12 are connected through the gas detection pipeline 3, the first gas hose 11 and the second gas hose A first airbag 21 and a second airbag 22 are respectively connected between the second gas hose 12 and the gas detection pipeline 3. The transition between the first airbag 21 and the gas detection pipeline 3 and between the second airbag 22 and the gas detection pipeline 3 can also be passed through a third gas hose 13.

[0037] The first gas hose 11 and the second gas hose 12 are close to each other in the middle, and a gas sampling power mechanism 5 is arranged close to each other. The ga...

Embodiment 2

[0043] Such as figure 2 As shown, the method of using the above-mentioned device for preventing blockage of a gas sampling path includes the following steps:

[0044] S1, setting the working parameters of the gas sampling power mechanism 5, the working parameters including the rotation speed and the replacement frequency of forward and reverse rotation, the gas sampling power mechanism 5 is turned on;

[0045] S2. Use the forward and reverse airflow provided by the gas sampling power mechanism 5 to purge and remove the deposits on the outer side walls of the first gas filter 41 and the second gas filter 42, and perform spectral detection on the gas at the gas detection pipeline 3; in step In S2, when the gas sampling power mechanism 5 rotates forward and reversely, the rotation direction is changed after acceleration and deceleration.

[0046] In addition, when the device includes a flow meter, step S2 also includes the following: when the gas flow rate is always less than the thre...

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Abstract

The invention belongs to the field of gas component detecting, and particularly relates to a device and method preventing gas sampling channel blockage. The device is of an integrated structure. The device comprises a first gas flexible pipe with one end being used as the first end of the device, and a second gas flexible pipe with one end being used as the second end of the device, and a gas detecting pipeline. The gas detecting pipeline communicates between the other ends of the first gas flexible pipe and the second gas flexible pipe. The middle parts of the first gas flexible pipe and thesecond gas flexible pipe are close, and a gas sampling power mechanism is arranged at the close positions. The gas sampling power mechanism rotates positively and negatively, and extrudes the first and second gas flexible pipe. The first end and the second end of the device are used as the gas input end alternatively. A first gas filtering machine and a second gas filtering machine are respectively arranged at the first end and the second end. The device has the advantages that fluency of the gas in the gas sampling channel is improved, and pollution or corrosion to optical elements and othercomponents of the detecting device can be avoided.

Description

Technical field [0001] The invention relates to the field of gas component detection, in particular to a device and method for preventing blockage of a gas sampling path. Background technique [0002] Environmental gas composition detection is common in various places such as industrial production, social activities and even household life, and is an important technical means to ensure environmental quality and protect personal safety. Due to the influence of suspended solids such as inherent dust, particles or gas melt adhesive in the air, the gas sampling path of the gas component detection device or equipment is often blocked, resulting in the performance of the detection device or equipment being reduced or even unusable. In addition, in traditional gas detection, optical devices are usually exposed to the gas to be measured, which is extremely susceptible to negative influences such as pollution and corrosion, which may interfere with the measurement results. Therefore, acc...

Claims

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Application Information

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IPC IPC(8): G01N1/22G01N1/24G01N1/34G01N21/25
CPCG01N1/2273G01N1/24G01N1/34G01N21/25
Inventor 朱友平付明张泽玮王鹏杨广
Owner HEFEI INST FOR PUBLIC SAFETY RES TSINGHUA UNIV