CN212134259U - Online multipoint monitoring sampling device for denitration flue gas parameters of thermal power plant - Google Patents
Online multipoint monitoring sampling device for denitration flue gas parameters of thermal power plant Download PDFInfo
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- CN212134259U CN212134259U CN202020445105.9U CN202020445105U CN212134259U CN 212134259 U CN212134259 U CN 212134259U CN 202020445105 U CN202020445105 U CN 202020445105U CN 212134259 U CN212134259 U CN 212134259U
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Abstract
The utility model discloses an on-line multipoint monitoring and sampling device for denitration flue gas parameters of a thermal power plant, which comprises a denitration outlet flue, a sampling main pipe and a dust remover inlet flue; the method is characterized in that: the denitration outlet flue is characterized by also comprising more than two sampling branch pipes connected with the sampling main pipe, wherein the sampling branch pipes are partially arranged in the denitration outlet flue, more than two sampling holes are arranged on each sampling branch pipe in the denitration outlet flue, and the sampling holes are uniformly distributed on the longitudinal section of the denitration outlet flue; a sampling probe mother cylinder is fixedly arranged on a sampling mother pipe in front of an inlet flue of the dust remover, and a nitrogen oxide/oxygen analyzer sampling probe and an ammonia escape analyzer probe are arranged on the sampling probe mother cylinder; the utility model has the advantages of the homogeneity and the stability of flue gas sample are good, can improve the degree of accuracy of monitoring.
Description
Technical Field
The utility model relates to a denitration flue gas parameter on-line monitoring sampling device of thermal power plant.
Background
At present, the denitration flue gas parameter on-line monitoring device of a thermal power plant conventionally adopts single-point sampling and probe monitoring, but because the denitration outlet flue is short, the flow field at the sampling point is uneven, representative uniform flue gas is difficult to obtain, so that the flue gas parameter measurement is inaccurate, the average value is deviated, and the monitoring accuracy is influenced.
Disclosure of Invention
The utility model aims at the above-mentioned not enough of prior art, provide an online multiple spot monitoring sampling device of thermal power plant's denitration flue gas parameter, it has the homogeneity of flue gas sample and the good advantage of stability, can improve the degree of accuracy of monitoring.
In order to achieve the purpose, the utility model discloses an online multipoint monitoring and sampling device for denitration flue gas parameters of a thermal power plant, which comprises a denitration outlet flue, a sampling main pipe and a dust remover inlet flue; the method is characterized in that: the denitration outlet flue is characterized by also comprising more than two sampling branch pipes connected with the sampling main pipe, wherein the sampling branch pipes are partially arranged in the denitration outlet flue, more than two sampling holes are arranged on each sampling branch pipe in the denitration outlet flue, and the sampling holes are uniformly distributed on the longitudinal section of the denitration outlet flue; a sampling probe mother cylinder is fixedly arranged on a sampling mother pipe in front of an inlet flue of the dust remover, and a nitrogen oxide/oxygen analyzer sampling probe and an ammonia escape analyzer probe are arranged on the sampling probe mother cylinder;
the device has the advantages that the device has the advantages of good uniformity and stability of flue gas sampling and can improve the monitoring accuracy by arranging the plurality of sampling holes in the denitration outlet flue and mixing the sampling holes in the sampling probe mother cylinder after multi-point sampling; the amount of the nitrogen oxide/oxygen and ammonia escaping amount is sampled and analyzed, so that parameters can be provided for controlling the amount of the denitration reducing agent;
as a further improvement of the utility model, the outer diameter of the sampling probe female cylinder is larger than that of the sampling female pipe; the installation of a nitrogen oxide/oxygen analyzer sampling probe and an ammonia escape analyzer probe is facilitated;
as a further improvement of the utility model, the sampling holes are all positioned on the back smoke surface of the sampling branch pipe; the sampling hole can be prevented from being blocked;
as a further improvement of the utility model, valves are arranged in the sampling mother pipes in front of and behind the sampling probe mother pipe; the maintenance is convenient;
to sum up, the utility model has the advantages of the homogeneity and the stability of flue gas sample are good, can improve the degree of accuracy of monitoring.
Drawings
Fig. 1 is a structural diagram of an embodiment of the present invention.
Fig. 2 is a top view of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the denitration flue gas parameter online multipoint monitoring and sampling device for a thermal power plant of the embodiment includes a denitration outlet flue 1, a sampling main pipe 2, a dust collector inlet flue 3 connected with the sampling main pipe 2, and four sampling branch pipes 4 connected with the sampling main pipe 2, wherein the sampling branch pipes 4 are partially penetrated and arranged in the denitration outlet flue 1, four sampling holes 5 are arranged on each sampling branch pipe 4 in the denitration outlet flue 1, the sampling holes 5 are uniformly distributed on the longitudinal section of the denitration outlet flue 1, and the sampling holes 5 are all located on the back smoke surface of the sampling branch pipes 4; a sampling probe mother tube 6 is fixedly welded on the sampling mother tube 2 in front of the dust remover inlet flue 3, the outer diameter of the sampling probe mother tube 6 is larger than that of the sampling mother tube 2, and a nitrogen oxide/oxygen analyzer sampling probe 7 and an ammonia escape analyzer probe 8 are arranged on the sampling probe mother tube 6; valves 9 are arranged in the sampling main pipes 2 in front of and behind the sampling probe main cylinder 6;
the device is characterized in that a plurality of sampling holes 5 are uniformly distributed in a denitration outlet flue 1 through a plurality of sampling branch pipes 4, the sampling holes are mixed in a sampling probe mother cylinder 6 after multi-point sampling, then sampling flue gas is sent to a connected flue gas analyzer for analysis through a nitrogen oxide/oxygen analyzer sampling probe 7, an ammonia escape analyzer probe 8 sends monitoring data to the flue gas analyzer, parameters can be provided for controlling the amount of a denitration reducing agent, the device has the advantages of good uniformity and stability of flue gas sampling, and the monitoring accuracy can be improved; the outer diameter of the sampling probe female cylinder 6 is larger than that of the sampling female pipe 2, so that the two probes can be conveniently installed; the sampling holes 5 are all positioned on the smoke-back surface of the sampling branch pipe 4, so that the sampling holes 5 can be prevented from being blocked; the two valves 9 are closed, so that the two probes can be conveniently overhauled.
Claims (4)
1. A denitration flue gas parameter online multi-point monitoring and sampling device for a thermal power plant comprises a denitration outlet flue, a sampling main pipe and a dust remover inlet flue; the method is characterized in that: the denitration outlet flue is characterized by also comprising more than two sampling branch pipes connected with the sampling main pipe, wherein the sampling branch pipes are partially arranged in the denitration outlet flue, more than two sampling holes are arranged on each sampling branch pipe in the denitration outlet flue, and the sampling holes are uniformly distributed on the longitudinal section of the denitration outlet flue; a sampling probe female cylinder is fixedly arranged on a sampling female pipe in front of an inlet flue of the dust remover, and a nitrogen oxide/oxygen analyzer sampling probe and an ammonia escape analyzer probe are arranged on the sampling probe female cylinder.
2. The on-line multipoint monitoring and sampling device for the denitration flue gas parameters of the thermal power plant as claimed in claim 1, characterized in that: the outer diameter of the sampling probe female cylinder is larger than that of the sampling female pipe.
3. The denitration flue gas parameter online multipoint monitoring and sampling device of the thermal power plant according to claim 1 or 2, characterized in that: the sampling holes are all located on the smoke-back surface of the sampling branch pipe.
4. The on-line multipoint monitoring and sampling device for the denitration flue gas parameters of the thermal power plant as claimed in claim 3, characterized in that: valves are arranged in the sampling mother pipes in front of and behind the sampling probe mother cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020445105.9U CN212134259U (en) | 2020-03-31 | 2020-03-31 | Online multipoint monitoring sampling device for denitration flue gas parameters of thermal power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020445105.9U CN212134259U (en) | 2020-03-31 | 2020-03-31 | Online multipoint monitoring sampling device for denitration flue gas parameters of thermal power plant |
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| Publication Number | Publication Date |
|---|---|
| CN212134259U true CN212134259U (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202020445105.9U Active CN212134259U (en) | 2020-03-31 | 2020-03-31 | Online multipoint monitoring sampling device for denitration flue gas parameters of thermal power plant |
Country Status (1)
| Country | Link |
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| CN (1) | CN212134259U (en) |
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2020
- 2020-03-31 CN CN202020445105.9U patent/CN212134259U/en active Active
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