CN210834344U - Multi-stage filtration's flue gas sampling device - Google Patents
Multi-stage filtration's flue gas sampling device Download PDFInfo
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- CN210834344U CN210834344U CN201921479347.3U CN201921479347U CN210834344U CN 210834344 U CN210834344 U CN 210834344U CN 201921479347 U CN201921479347 U CN 201921479347U CN 210834344 U CN210834344 U CN 210834344U
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Abstract
A multi-stage filtration flue gas sampling device belongs to the technical field of flue gas measurement and analysis. The device comprises a sampling probe, a sampling pipeline, a gas-solid separator and a filter element which are arranged in a flue; the filter core is installed in the sample pipeline and constitutes telescopic structure with the sample pipeline. The gas-solid separator adopts a cone-shaped structure, and a fly ash collector is arranged at the bottom of the cone-shaped structure. The gas-solid separator can primarily screen larger fly ash particles in the flue gas, the fly ash particles fall to the fly ash collector under the action of gravity, and the fly ash is emptied through the quality sensing and control system. The flue gas after preliminary screening flows through the filter core and filters once more, accomplishes the multistage filtration in the sampling process. The device need not extra power device to gas-solid separation ware and filter core carry out the multiple stage filtration to the flue gas, can effectively prolong the filter core and sweep the cycle, improve sampling system's continuous operation nature, have simple structure, be convenient for maintain and energy-concerving and environment-protective advantage.
Description
Technical Field
The utility model relates to a flue gas sampling device especially relates to a multistage filtration's flue gas sampling device, belongs to
The technical field of flue gas measurement and analysis.
Background
When the existing flue gas is analyzed, a sampling probe is needed to sample the flue gas in a flue and send the flue gas into an analyzer for analysis, and the analyzer is easy to block due to more dust and impurities in the flue gas. For preventing that the dust impurity in the flue gas from getting into the measuring pipeline and influencing the accuracy that the analysis appearance measured, at present set up the filter in the sample pipeline mostly, but the filter is easy to be blockked up after long-term the use, consequently sweeps the filter in the sample pipeline regularly to make the sample continuously go on. However, in actual operation, the purging effect gradually becomes worse along with the increase of operation time, dust accumulated in the filter cannot be cleaned, the filter element needs to be detached for manual cleaning, and the normal operation of the sampling device is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, an object of the utility model is to provide a flue gas multistage filtration sampling device increases one-level filter equipment before the filter core, alleviates the operating pressure of filter core through multistage filtration to the extension filter core sweeps the cycle, improves sampling system's continuous operation nature.
The above object of the present invention is achieved by the following technical solutions:
a multi-stage filtration flue gas sampling device comprises a sampling probe, a sampling pipeline and a filter element, wherein the sampling probe, the sampling pipeline and the filter element are arranged in a flue; the filter core is installed in the sample pipeline and constitutes telescopic structure, its characterized in that with the sample pipeline: the sampling device also comprises a gas-solid separator, the gas-solid separator is arranged on the sampling pipeline between the sampling probe and the filter element, and the inlet end and the outlet end of the gas-solid separator are respectively communicated with the sampling pipeline.
Preferably, the gas-solid separator adopts a conical cylindrical structure and consists of a top cylindrical structure and an inverted conical structure at the lower part, wherein the inside of the top cylindrical structure is provided with swirl vanes, and the bottom of the conical structure is provided with a fly ash collector.
Preferably, the filter element is a ceramic filter element.
Preferably, a mass sensor is installed at the bottom of the fly ash collector.
Preferably, the outer surface of the sampling pipe located outside the flue is provided with an insulating layer.
Compared with the prior art, the utility model, ① the utility model discloses set up the multistage filtration of compriseing gas-solid separator and filter core on the sampling pipeline, at first through the gas-solid separator among the flue gas sampling process, material such as the flying dust of great granule falls to the flying dust collector here and realizes elementary filtration, alleviates the filter pressure of filter core, can increase the cycle of sweeping of filter core, ② the device have simple structure, be convenient for maintain and energy-concerving and environment-protective advantage.
Drawings
Fig. 1 is a schematic diagram of the structural principle of the embodiment of the present invention.
Fig. 2 is a schematic diagram of the structure principle of the gas-solid separator of the present invention.
Fig. 3 is a schematic cross-sectional view of the cartridge a-a of fig. 1.
Reference numerals: 1-a sampling probe; 2-a sampling pipeline; 3-gas-solid separator; 4-a filter element; 5-insulating layer; 6-flue; 7-swirl vanes; 8-a fly ash collector; 9-mass sensor.
Detailed Description
The following describes the structure, principle and operation of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic view of the structural principle of an embodiment of the present invention, and the multistage filtration sampling device includes a sampling probe 1, a sampling pipeline 2, a gas-solid separator 3, a filter element 4 and a heat insulation layer 5; the sampling probe 1 is arranged in the flue 6; the gas-solid separator 3 and the filter element 4 are both arranged in the flue of the sampling pipeline 2, no additional heat preservation device is needed, and the gas-solid separator 3 is arranged between the sampling probe 1 and the filter element 4. FIG. 2 is a schematic structural view of a gas-solid separator, wherein the gas-solid separator 3 is composed of an upper part and a lower part, the upper part is in a cylindrical structure and is connected with a sampling pipeline 2, and a swirl vane 7 is arranged at the upper part; the lower part is a fly ash collector 8 which is designed into an inverted cone shape.
The cyclone blade 7 has no power device, and is rotated by the flowing of the flue gas, which is a main component for realizing gas-solid separation of the flue gas. The fly ash collector 8 is designed to be an inverted cone, so that fly ash can fall to the bottom of the fly ash collector 8 conveniently, the bottom is provided with a quality sensor 9, and when the mass of the fly ash in the fly ash collector 8 reaches a set value, the fly ash is controlled by a control system to be emptied.
The filter element 4 is a ceramic filter element and is provided with a regular purging device in the using process.
The outside of the sampling pipeline 2 outside the flue is provided with a heat preservation layer 5, and the purpose is to avoid temperature reduction and condensation in the flowing process of flue gas sampling.
The working principle of the utility model is as follows: a sampling probe is arranged in a flue, flue gas is extracted to flow through a cyclone blade part in a gas-solid separator, the flow velocity is reduced in the process of pushing the cyclone blade to rotate, impurities such as large-particle fly ash in the flue gas fall downwards into a fly ash collector under the action of self gravity, primary filtration of the flue gas is realized, a quality sensor is arranged at the bottom of the fly ash collector, and when the bottom quality reaches a set value, the fly ash collector is emptied through a control system. The flue gas through primary filtration flows through the filter core, and the filter core is the annular structure, installs in the sample pipeline, and the flue gas flows to central zone through the filter core by sample pipeline all around, filters fly ash granule in the flue gas once more, realizes the multi-stage filtration in the sample, makes the sample flue gas cleanliness reach analysis standard. The filter element is provided with a periodic purge. The multistage filtering and sampling device can effectively prolong the purging period of the filter element and improve the continuous working performance of the sampling system. The device need not extra power device to gas-solid separation ware and filter core carry out multistage filtration to the flue gas, need not often to sweep the filter core often, have simple structure, be convenient for maintain and energy-concerving and environment-protective advantage such as.
Claims (5)
1. A multi-stage filtration flue gas sampling device comprises a sampling probe (1) arranged in a flue, a sampling pipeline (2) and a filter element (4), wherein the sampling probe (1) is arranged at the sampling end of the sampling pipeline (2); filter core (4) are installed in sample pipeline (2) and constitute telescopic structure, its characterized in that with sample pipeline (2): the sampling device also comprises a gas-solid separator (3), the gas-solid separator (3) is arranged on the sampling pipeline (2) between the sampling probe (1) and the filter element (4), and the inlet end and the outlet end of the gas-solid separator (3) are respectively communicated with the sampling pipeline (2).
2. The multi-stage filtration flue gas sampling device of claim 1, wherein: the gas-solid separator (3) adopts a conical cylindrical structure and consists of a top cylindrical structure and an inverted conical structure at the lower part, wherein a swirl vane (7) is arranged in the top cylindrical structure, and a fly ash collector (8) is arranged at the bottom of the conical structure.
3. The multi-stage filtration flue gas sampling device of claim 1, wherein: the filter element (4) is a ceramic filter element.
4. A multi-stage filtration flue gas sampling apparatus according to claim 1, 2 or 3, wherein: the bottom of the fly ash collector (8) is provided with a mass sensor (9).
5. The multi-stage filtration flue gas sampling device of claim 1, wherein: and a heat-insulating layer (5) is arranged on the outer surface of the sampling pipeline (2) positioned outside the flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921479347.3U CN210834344U (en) | 2019-09-06 | 2019-09-06 | Multi-stage filtration's flue gas sampling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921479347.3U CN210834344U (en) | 2019-09-06 | 2019-09-06 | Multi-stage filtration's flue gas sampling device |
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| CN210834344U true CN210834344U (en) | 2020-06-23 |
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| CN201921479347.3U Active CN210834344U (en) | 2019-09-06 | 2019-09-06 | Multi-stage filtration's flue gas sampling device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113218718A (en) * | 2021-04-30 | 2021-08-06 | 陕西国防工业职业技术学院 | Real-time online detection device for sampling atmospheric particulate pollutants and pretreating samples |
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2019
- 2019-09-06 CN CN201921479347.3U patent/CN210834344U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113218718A (en) * | 2021-04-30 | 2021-08-06 | 陕西国防工业职业技术学院 | Real-time online detection device for sampling atmospheric particulate pollutants and pretreating samples |
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