CN220690878U - Desulfurization flue gas humidity measuring device - Google Patents
Desulfurization flue gas humidity measuring device Download PDFInfo
- Publication number
- CN220690878U CN220690878U CN202320948342.0U CN202320948342U CN220690878U CN 220690878 U CN220690878 U CN 220690878U CN 202320948342 U CN202320948342 U CN 202320948342U CN 220690878 U CN220690878 U CN 220690878U
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- Prior art keywords
- flue gas
- sampling tube
- tube
- compressed air
- hygrometer
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- 239000003546 flue gas Substances 0.000 title claims abstract description 60
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 29
- 230000023556 desulfurization Effects 0.000 title claims abstract description 28
- 238000005070 sampling Methods 0.000 claims abstract description 37
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 238000010926 purge Methods 0.000 claims abstract description 17
- 238000005259 measurement Methods 0.000 claims description 6
- 239000000523 sample Substances 0.000 abstract description 9
- 238000002425 crystallisation Methods 0.000 abstract description 6
- 230000008025 crystallization Effects 0.000 abstract description 6
- 238000009825 accumulation Methods 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to the technical field of thermal power generation flue gas detection, in particular to a desulfurization flue gas humidity measuring device, which comprises a sampling tube inserted into a desulfurization flue, wherein the other end of the sampling tube is connected with a detection tube, a flue gas hygrometer is arranged in the detection tube, the flue gas hygrometer is arranged along the axis of the detection tube, and a compressed air purging device is arranged at the joint of the sampling tube and the detection tube. According to the utility model, the probe of the flue gas hygrometer is prevented from being directly inserted into the desulfurization flue by arranging the sampling tube, so that the adhesion of moisture contained in the flue gas at the probe of the flue gas hygrometer is effectively reduced; can effectively clean the sampling tube through setting up compressed air and sweep the device, avoid the long-time accumulation of staying at the sampling tube inner wall of the vapor that the flue gas contains, and then effectively alleviate the crystallization phenomenon of sampling tube inside and flue gas hygrometer probe department, ensure that the measured data of flue gas hygrometer is accurate and the steady operation of whole unit.
Description
Technical Field
The utility model relates to the technical field of thermal power generation flue gas detection, in particular to a desulfurization flue gas humidity measuring device.
Background
At present, in the flue gas emission process of power plants and the like, desulfurization and denitrification operations are required to be carried out on the flue gas emitted through a chimney, and the common wet desulfurization and denitrification is sensitive to the humidity of the flue gas, so that the desulfurization and denitrification effects are obviously improved due to the proper humidity; therefore, humidity control of the flue gas is required so that it is controlled within a reasonable range.
The conventional detection mode is to directly install the desulfurization flue gas hygrometer additional in desulfurization flue side and monitor, but the steam that exists in the desulfurization flue can make the probe department that the flue gas hygrometer used for a long time take place crystallization phenomenon to can lead to the hygrometer data inaccurate, influence environmental protection parameter.
Disclosure of Invention
The utility model aims to provide a desulfurization flue gas humidity measuring device which can effectively relieve crystallization phenomenon at a probe of a flue gas hygrometer and ensure accurate measurement data of the flue gas hygrometer.
The utility model provides a desulfurization flue gas humidity measuring device which comprises a sampling tube inserted into a desulfurization flue, wherein the other end of the sampling tube is connected with a detection tube, a flue gas hygrometer is arranged in the detection tube and is arranged along the axis of the detection tube, and a compressed air purging device is arranged at the joint of the sampling tube and the detection tube.
Preferably, the blowing direction of the compressed air blowing device is opposite to the air inlet direction of the sampling tube.
Preferably, the sampling tube is connected with the detection tube through an elbow.
Preferably, the output end of the compressed air purging device is connected with the bent pipe.
Preferably, the compressed air purging device comprises a compressed air pipeline connected with the bent pipe, a first electromagnetic valve is arranged on the compressed air pipeline, and the first electromagnetic valve is electrically connected with the time relay.
Preferably, the other end of the compressed air pipeline is connected with an air compressor.
Preferably, a control switch is arranged between the air compressor and the first electromagnetic valve.
Preferably, one end of the detection tube, which is far away from the flue gas hygrometer, is provided with a second electromagnetic valve, and the second electromagnetic valve is used for closing the detection tube.
Preferably, the second solenoid valve is electrically connected to the time relay.
Preferably, the angle between the sampling tube and the flow direction of the flue gas in the desulfurization flue is not smaller than 90 degrees.
The beneficial effects are that:
according to the utility model, the probe of the flue gas hygrometer is prevented from being directly inserted into the desulfurization flue by arranging the sampling tube, so that the adhesion of moisture contained in the flue gas at the probe of the flue gas hygrometer is effectively reduced; can effectively clean the sampling tube through setting up compressed air and sweep the device, avoid the long-time accumulation of staying at the sampling tube inner wall of the vapor that the flue gas contains, and then effectively alleviate the crystallization phenomenon of sampling tube inside and flue gas hygrometer probe department, ensure that the measured data of flue gas hygrometer is accurate and the steady operation of whole unit.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present utility model.
Reference numerals illustrate:
the device comprises a 1-desulfurization flue, a 2-sampling tube, a 3-detection tube, a 4-flue gas hygrometer, a 5-bent tube, a 6-compressed air pipeline, a 7-time relay, an 8-air compressor, a 9-first electromagnetic valve, a 10-second electromagnetic valve and a 11-control switch.
Detailed Description
The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in FIG. 1, the desulfurization flue gas humidity measuring device comprises a sampling tube 2 inserted into a desulfurization flue 1, wherein the other end of the sampling tube 2 is connected with a detection tube 3, the sampling tube 2 is connected with the detection tube 3 through a bent tube 5, and the bent tube 5 is used for connecting water vapor and crystallization at a purging turning position more easily. The detection tube 3 is arranged in parallel with the desulfurization flue 1, the angle between the sampling tube 2 and the flow direction of the flue gas in the desulfurization flue 1 is not less than 90 degrees, and the angle between the sampling tube 2 and the desulfurization flue 1 is preferably 90 degrees.
The flue gas hygrometer 4 is arranged in the detection tube 3, the flue gas hygrometer 4 is arranged along the axis of the detection tube 3, and a compressed air purging device is arranged at the joint of the sampling tube 2 and the detection tube 3. The output end of the compressed air purging device is connected with the bent pipe 5. The direction of blowing of the compressed air blowing device is opposite to the air inlet direction of the sampling tube 2, so that water vapor or crystals attached to the inner wall of the sampling tube 2 can be blown away from the sampling tube 2, and the water vapor is prevented from entering the detection tube 3 to contact with the probe of the flue gas hygrometer 4. The compressed air purging device comprises a compressed air pipeline 6 connected with the bent pipe 5, a first electromagnetic valve 9 is arranged on the compressed air pipeline 6, the first electromagnetic valve 9 is electrically connected with a time relay 7, the switching time of the first electromagnetic valve 9 is controlled through the time relay 7, and then the purging time is adjusted. The other end of the compressed air pipeline 6 is connected with an air compressor 8 for providing compressed air. A control switch 11 is arranged between the air compressor 8 and the first solenoid valve 9. The control switch 11 can adopt manual slide valve, and under the daily condition, the control switch 11 is in a normally open state, and continuously provides compressed air, and when the compressed air pipeline 6 needs to be overhauled or the first electromagnetic valve 9 breaks down, the manual slide valve can be closed, so that the maintenance personnel can conveniently carry out equipment maintenance during the operation of the unit.
The end of the detection tube 3 away from the flue gas hygrometer 4 is provided with a second electromagnetic valve 10, and the second electromagnetic valve 10 is used for closing the detection tube 3. The second solenoid valve 10 is electrically connected to the time relay 7. When the first electromagnetic valve 9 is opened, the time relay 7 controls the second electromagnetic valve 10 to be closed, so that the influence of purging on the detection result of the flue gas hygrometer 4 is avoided. The time relay 7 functions to control the switching of the first solenoid valve 9 and the second solenoid valve 10.
The working process comprises the following steps:
the flue gas in the desulfurization flue 1 enters a detection tube 3 through a sampling tube 2, and the humidity of the flue gas is detected by a flue gas hygrometer 4; under normal working conditions, the control switch 11 is in a normally open state, so that the compressed air is continuously supplied into the compressed air pipeline 6, the first electromagnetic valve 9 is in a closed state, and the second electromagnetic valve 10 is in an open state;
the time relay 7 presets interval time, after the preset time is reached, the first electromagnetic valve 9 is opened, compressed air sweeps the sampling tube 2 and the bent tube 5 through the compressed air pipeline 6, so that water vapor in the sampling tube 2 is effectively reduced, and crystallization phenomenon in the sampling tube 2 is relieved; simultaneously, the second electromagnetic valve 10 is closed, at the moment, the flue gas hygrometer 4 is in a closed environment, and residual flue gas exists in the detection tube 3, so that the influence of compressed air purging on the detection result of the flue gas hygrometer 4 is avoided; after purging for a certain time, the time relay 7 controls the first electromagnetic valve 9 to be closed, purging is finished, and then the second electromagnetic valve 10 is opened, and the flue gas hygrometer 4 continues to detect.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (10)
1. The utility model provides a desulfurization flue gas humidity measuring device, its characterized in that, including inserting the inside sampling tube of desulfurization flue, the detection tube is connected to the sampling tube other end, be equipped with the flue gas hygrometer in the detection tube, the flue gas hygrometer is followed the detection tube axis sets up, the sampling tube with the junction of detection tube is equipped with compressed air and sweeps the device.
2. The desulfurized flue gas humidity measurement device of claim 1, wherein the compressed air purge device has a purge direction opposite to an inlet direction of the sampling tube.
3. The desulfurized flue gas humidity measurement device of claim 1, wherein the sampling tube is connected with the detection tube through an elbow.
4. A desulphurized flue gas humidity measuring device according to claim 3, characterized in that the compressed air purge means output is connected to the elbow.
5. The device for measuring the humidity of the desulfurized flue gas according to claim 4, wherein the compressed air purging device comprises a compressed air pipeline connected with the bent pipe, a first electromagnetic valve is arranged on the compressed air pipeline, and the first electromagnetic valve is electrically connected with the time relay.
6. The apparatus according to claim 5, wherein the other end of the compressed air pipeline is connected to an air compressor.
7. The apparatus according to claim 6, wherein a control switch is provided between the air compressor and the first solenoid valve.
8. The desulfurization flue gas humidity measurement device according to claim 5, wherein one end of the detection tube away from the flue gas hygrometer is provided with a second electromagnetic valve for closing the detection tube.
9. The desulfurized flue gas humidity measurement device of claim 8, wherein the second solenoid valve is electrically connected with the time relay.
10. The desulfurization flue gas humidity measurement device according to claim 1, wherein an angle between the sampling tube and a flue gas flow direction inside the desulfurization flue is not less than 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320948342.0U CN220690878U (en) | 2023-04-24 | 2023-04-24 | Desulfurization flue gas humidity measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320948342.0U CN220690878U (en) | 2023-04-24 | 2023-04-24 | Desulfurization flue gas humidity measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220690878U true CN220690878U (en) | 2024-03-29 |
Family
ID=90370528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320948342.0U Active CN220690878U (en) | 2023-04-24 | 2023-04-24 | Desulfurization flue gas humidity measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220690878U (en) |
-
2023
- 2023-04-24 CN CN202320948342.0U patent/CN220690878U/en active Active
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