CN217007224U - Continuous monitoring system for smoke emission - Google Patents
Continuous monitoring system for smoke emission Download PDFInfo
- Publication number
- CN217007224U CN217007224U CN202220661656.8U CN202220661656U CN217007224U CN 217007224 U CN217007224 U CN 217007224U CN 202220661656 U CN202220661656 U CN 202220661656U CN 217007224 U CN217007224 U CN 217007224U
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- Prior art keywords
- sampling
- flue gas
- smoke
- monitoring system
- continuous monitoring
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- 239000000779 smoke Substances 0.000 title claims abstract description 67
- 238000012544 monitoring process Methods 0.000 title claims abstract description 30
- 238000005070 sampling Methods 0.000 claims abstract description 108
- 239000000523 sample Substances 0.000 claims abstract description 79
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 65
- 239000003546 flue gas Substances 0.000 claims abstract description 65
- 239000007789 gas Substances 0.000 claims abstract description 30
- 239000000428 dust Substances 0.000 claims abstract description 19
- 238000004458 analytical method Methods 0.000 claims abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000001301 oxygen Substances 0.000 claims abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 9
- 238000010926 purge Methods 0.000 claims description 16
- 239000003517 fume Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000738 capillary electrophoresis-mass spectrometry Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a continuous monitoring system for flue gas emission, which comprises a sampling monitoring module and an instrument analysis module, wherein the sampling monitoring module at least comprises a laser dust meter, a flow rate monitor, an oxygen meter and a flue gas sampling probe which are arranged on a flue gas emission pipeline, and the instrument analysis module is electrically connected with the laser dust meter, the flow rate monitor and the oxygen meter; the instrument analysis module further comprises two smoke gas analyzers, the number of the smoke gas sampling probes is two, and the two smoke gas sampling probes are respectively communicated with the two smoke gas analyzers. The utility model adopts two flue gas sampling probes and a flue gas analyzer which are arranged in parallel, improves the detection accuracy, is favorable for finding the blocking condition of the flue gas sampling probes in time, and can still maintain the normal operation of the continuous monitoring system for the flue gas emission even if one flue gas sampling probe is blocked and the other normal flue gas sampling probe is blocked.
Description
Technical Field
The utility model relates to the technical field of flue gas monitoring, in particular to a continuous monitoring system for flue gas emission.
Background
With the increase of environmental protection and the national requirements for environmental protection, the power plant must be provided with a desulphurization device and a desulphurization flue gas online device (CEMS). Most of existing desulfurization flue gas online devices use an extraction method, but in the actual operation process, a probe of a flue gas analyzer is difficult to guarantee to be not blocked by dust, and the flue gas analyzer cannot be calibrated on line after being blocked, so that the situations of poor measurement precision, more invalid data and the like are finally caused. At present, the maintenance work of the desulfurization flue gas on-line device depends on manual experience, and if a flue gas analyzer is blocked, emergency maintenance can be carried out afterwards only according to the alarm condition. Therefore, there is a need for a new continuous monitoring system for smoke emission.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a continuous monitoring system for flue gas emission, which adopts two parallel flue gas sampling probes and a flue gas analyzer, improves the detection accuracy, is favorable for finding the blockage condition of the flue gas sampling probes in time, and can still maintain the normal operation of the continuous monitoring system for flue gas emission even if one of the flue gas sampling probes is blocked and the other normal flue gas sampling probe is blocked.
The technical purpose of the utility model is realized by the following technical scheme:
a continuous monitoring system for flue gas emission comprises a sampling monitoring module and an instrument analysis module, wherein the sampling monitoring module at least comprises a laser dust meter, a flow rate monitor, an oxygen meter and a flue gas sampling probe which are arranged on a flue gas emission pipeline, and the instrument analysis module is electrically connected with the laser dust meter, the flow rate monitor and the oxygen meter;
the instrument analysis module further comprises two smoke gas analyzers, the number of the smoke gas sampling probes is two, and the two smoke gas sampling probes are respectively communicated with the two smoke gas analyzers.
In one embodiment, the front ends of the two smoke sampling probes are respectively connected with a Y-shaped auxiliary pipeline, and the rear ends of the two smoke sampling probes are both connected with a first forced purging gas circuit.
In one embodiment, an electromagnetic bypass valve is arranged between the smoke sampling probe and the auxiliary pipeline.
In one embodiment, the front end of the auxiliary pipeline is provided with a quick connector, the auxiliary pipeline is connected with a sampling main pipe through the quick connector, and the sampling main pipe is connected with a plurality of sampling branch pipes.
In one embodiment, the side of the sampling branch pipe is provided with a plurality of sampling holes.
In one embodiment, the smoke sampling probe is communicated with the smoke analyzer through a heat tracing sampling pipe.
In one embodiment, the laser dust meter and the flow rate monitor are respectively communicated with the second forced purging gas circuit.
In conclusion, the utility model has the following beneficial effects:
the utility model adopts two smoke sampling probes and a smoke analyzer which are arranged in parallel, improves the detection accuracy, is also favorable for finding the blockage condition of the smoke sampling probe in time, and even if one smoke sampling probe is blocked, the other normal smoke sampling probe can still maintain the normal operation of the smoke emission continuous monitoring system.
Drawings
FIG. 1 is a schematic diagram of the structure of a smoke sampling probe of the present invention.
In the figure: 1-a smoke sampling probe, 2-a heat tracing sampling pipe, 3-a first forced purging gas circuit, 4-an auxiliary pipeline, 5-an electromagnetic bypass valve, 6-a sampling header pipe, 7-a sampling branch pipe, 8-a sampling hole and 9-an electromagnetic valve.
Detailed Description
The utility model is described in detail below with reference to the figures and examples.
It should be noted that the directional terms such as "upper" and "lower" referred to herein are used relative to the drawings, and are only for convenience of description, and should not be construed as limiting the technical scope.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
As shown in fig. 1, the utility model provides a continuous monitoring system for flue gas emission, aiming at the problems that a probe of a flue gas analyzer is easy to be blocked by dust, the flue gas analyzer cannot be calibrated on line after being blocked, and finally the measurement precision is poor and the invalid data is more, the continuous monitoring system for flue gas emission comprises a sampling monitoring module and an instrument analysis module, wherein the sampling monitoring module at least comprises a laser dust meter, a flow rate monitor, an oxygen meter and a flue gas sampling probe 1 which are arranged on a flue gas emission pipeline, and the instrument analysis module is electrically connected with the laser dust meter, the flow rate monitor and the oxygen meter;
the instrument analysis module further comprises two smoke gas analyzers, the number of the smoke gas sampling probes 1 is two, and the smoke gas sampling probes 1 are respectively communicated with the two smoke gas analyzers through heat tracing sampling pipes 2.
Specifically, the two flue gas analyzers and the two flue gas sampling probes 1 which are arranged in parallel are adopted, two flue gas analysis data are obtained in the instrument analysis module at the same time, the two flue gas sampling probes 1 are arranged in parallel, the obtained flue gas samples are also close, and when the results of the two flue gas analyzers detecting the flue gas are obviously different, the situation that one of the flue gas sampling probes 1 is blocked is shown. In the utility model, even if one of the smoke sampling probes 1 is blocked, the normal operation of the smoke emission continuous monitoring system is not influenced.
Furthermore, the front ends of the two smoke sampling probes 1 are respectively connected with a Y-shaped auxiliary pipeline 4, and the rear ends of the two smoke sampling probes 1 are connected with a first forced purging gas circuit 3.
It is easy to understand that the first forced purging gas circuit 3 is communicated with the gas supply device, two electromagnetic valves 9 can be arranged on the first forced purging gas circuit 3 for the two flue gas sampling probes 1,
specifically, the two flue gas sampling probes 1 are communicated with the Y-shaped auxiliary pipeline 4, that is, the flue gas firstly enters the Y-shaped auxiliary pipeline 4 and then flows into the two flue gas sampling probes 1, so that the flue gas samples collected by the two flue gas sampling probes 1 are the same;
in addition, the two smoke sampling probes 1 are connected with the first forced purging gas circuit 3, and when the two smoke analyzers detect that the smoke results are obviously different, the smoke sampling probes 1 are blown by the first forced purging gas circuit 3, so that the problem of probe blockage is solved.
It is easy to understand that when one of the smoke sampling probes 1 is blocked, only the blocked smoke sampling probe 1 is purged, and the normal sampling of the other smoke sampling probe 1 is not affected.
It is easy to understand that when the two smoke sampling probes 1 are blocked, the two smoke sampling probes 1 are simultaneously swept, so that the problem of probe blockage is solved.
Furthermore, an electromagnetic bypass valve 5 is arranged between the smoke sampling probe 1 and the auxiliary pipeline 4, and the electromagnetic bypass valve 5 is a three-way valve.
Specifically, when the smoke sampling probe 1 is not blocked, the electromagnetic bypass valve 5 enables the smoke sampling probe 1 to be communicated with the auxiliary pipeline 4, and the smoke sampling probe 1 performs normal sampling; when the smoke sampling probe 1 is blocked, the electromagnetic bypass valve 5 is started, the smoke sampling probe 1 is disconnected from the auxiliary pipeline 4, the smoke sampling probe 1 is communicated with the outside, the first forced purging gas circuit 3 is started at the moment, the blocked smoke sampling probe 1 is purged, and dust generated by purging is discharged to the outside through the electromagnetic bypass valve 5.
An electromagnetic bypass valve 5 is arranged between the flue gas sampling probe 1 and the auxiliary pipeline 4, so that the influence on the normal flue gas sampling probe 1 when the blocked flue gas sampling probe 1 is swept is avoided. If the two flue gas sampling probes 1 are blocked at the same time, the electromagnetic bypass valve 5 enables the flue gas sampling probes 1 to be communicated with the outside, and the two blocked flue gas sampling probes 1 can be directly swept.
It is easy to understand that when one of the smoke sampling probes 1 is blocked, if the blocked smoke sampling probe 1 is directly purged, dust generated by purging may enter another normal smoke sampling probe 1 to cause blocking, so that the utility model arranges a bypass valve to lead the dust generated by purging to the outside, and the other normal smoke sampling probe 1 is not affected.
In the utility model, a quick connector is arranged at the front end of the auxiliary pipeline 4, the auxiliary pipeline 4 is connected with a sampling main pipe 6 through the quick connector, the sampling main pipe 6 is connected with a plurality of sampling branch pipes 7, and a plurality of sampling holes 8 are arranged on the side surfaces of the sampling branch pipes 7.
Specifically, a plurality of sampling branch pipes 7 are located the different positions of fume emission pipeline, and the flue gas of collecting mixes at sampling header pipe 6 to shunt through auxiliary pipeline 4 and get into two flue gas sampling probes 1, guaranteed the homogeneity and the stability of flue gas sample, improve the degree of accuracy that the flue gas detected.
In addition, in the utility model, the laser dust meter and the flow rate monitor are respectively communicated with the second forced purging gas circuit. Because the laser dust meter and the flow rate monitor have the possibility of blockage, the laser dust meter and the flow rate monitor are purged through the second forced purging gas circuit, and the problem of blockage is solved.
It should be noted that, in the present invention, the laser dust meter, the flow rate detector, the oxygen meter and the flue gas analyzer are conventional detection devices.
According to the utility model, the two smoke sampling probes 1 and the smoke analyzer which are arranged in parallel are adopted, so that the detection accuracy is improved, the blockage situation of the smoke sampling probe 1 can be found in time, and even if one smoke sampling probe 1 is blocked, the other normal smoke sampling probe 1 can still maintain the normal operation of the smoke emission continuous monitoring system.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention should also be considered as within the scope of the present invention.
Claims (7)
1. A continuous monitoring system for flue gas emission is characterized by comprising a sampling monitoring module and an instrument analysis module, wherein the sampling monitoring module at least comprises a laser dust meter, a flow rate monitor, an oxygen meter and a flue gas sampling probe (1) which are arranged on a flue gas emission pipeline, and the instrument analysis module is electrically connected with the laser dust meter, the flow rate monitor and the oxygen meter;
the instrument analysis module further comprises two smoke gas analyzers, the number of the smoke gas sampling probes (1) is two, and the two smoke gas sampling probes (1) are respectively communicated with the two smoke gas analyzers.
2. The continuous monitoring system for flue gas emission according to claim 1, wherein the front ends of the two flue gas sampling probes (1) are respectively connected with a Y-shaped auxiliary pipeline (4), and the rear ends of the two flue gas sampling probes (1) are both connected with the first forced purging gas circuit (3).
3. The continuous monitoring system of the fume emission according to the claim 2, characterized in that an electromagnetic bypass valve (5) is arranged between the fume sampling probe (1) and the auxiliary pipe (4).
4. The continuous monitoring system for flue gas emission according to claim 3, wherein the front end of the auxiliary pipe (4) is provided with a quick connector, the auxiliary pipe (4) is connected with a sampling main pipe (6) through the quick connector, and the sampling main pipe (6) is connected with a plurality of sampling branch pipes (7).
5. The continuous monitoring system of smoke emissions according to claim 4, characterized in that said sampling branch (7) is provided laterally with a plurality of sampling holes (8).
6. The continuous monitoring system for smoke emission according to any one of the claims 1 to 5, wherein the smoke sampling probe (1) is communicated with the smoke analyzer through a heat tracing sampling pipe (2).
7. The continuous fume emission monitoring system of claim 2, wherein the laser dust meter and the flow rate monitor are respectively communicated with the second forced purging gas circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220661656.8U CN217007224U (en) | 2022-03-24 | 2022-03-24 | Continuous monitoring system for smoke emission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220661656.8U CN217007224U (en) | 2022-03-24 | 2022-03-24 | Continuous monitoring system for smoke emission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217007224U true CN217007224U (en) | 2022-07-19 |
Family
ID=82371676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220661656.8U Expired - Fee Related CN217007224U (en) | 2022-03-24 | 2022-03-24 | Continuous monitoring system for smoke emission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217007224U (en) |
-
2022
- 2022-03-24 CN CN202220661656.8U patent/CN217007224U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220719 |
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| CF01 | Termination of patent right due to non-payment of annual fee |