CN221100207U - Flue gas sampling device - Google Patents
Flue gas sampling device Download PDFInfo
- Publication number
- CN221100207U CN221100207U CN202323186883.3U CN202323186883U CN221100207U CN 221100207 U CN221100207 U CN 221100207U CN 202323186883 U CN202323186883 U CN 202323186883U CN 221100207 U CN221100207 U CN 221100207U
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- CN
- China
- Prior art keywords
- negative pressure
- gas sampling
- smoke
- flue gas
- sampling
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Links
- 238000005070 sampling Methods 0.000 title claims abstract description 125
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 239000003546 flue gas Substances 0.000 title claims abstract description 69
- 239000000779 smoke Substances 0.000 claims abstract description 53
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000001301 oxygen Substances 0.000 claims abstract description 41
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 41
- 239000007789 gas Substances 0.000 claims abstract description 36
- 230000001105 regulatory effect Effects 0.000 claims abstract description 9
- 239000000523 sample Substances 0.000 claims description 15
- 238000005259 measurement Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000000738 capillary electrophoresis-mass spectrometry Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a smoke sampling device, comprising: an oxygen sensor structure comprising a gas sampling conduit; the vacuum negative pressure forming structure is arranged on the gas sampling pipeline; and the smoke sampling pipe is communicated with the gas sampling pipeline, smoke can enter the gas sampling pipeline through the smoke sampling pipe, and the smoke is driven to enter the gas sampling pipeline to be sampled by the oxygen sensor structure through the vacuum negative pressure formed by the vacuum negative pressure forming structure. According to the scheme of the utility model, the vacuum negative pressure forming structure is added, and the sampling loop of the clean flue gas oxygen sensor is modified, so that the reliability of flue gas sampling is improved. The effect of flue gas sampling can be guaranteed, and measurement deviation caused by poor sealing of the sensor is reduced. According to the scheme, one path of ejector, the compressed air source and the pressure regulating valve are added, so that the influence of the negative pressure state of the smoke sampling point on smoke sampling can be eliminated, and the continuity and stability of sampling can be ensured.
Description
Technical Field
The utility model relates to the technical field of net smoke sampling and monitoring of thermal power plants, in particular to a smoke sampling device.
Background
At present, the oxygen amount of a purified flue gas CEMS instrument oxygen measuring point multi-sampling zirconia sensor of a thermal power plant is measured, the flue gas sampling mode is mainly that flue gas is guided to enter the oxygen measuring sensor by virtue of a guide plate, and the flue gas returns to a flue through a backflow hole, so that the sampling measurement of the flue gas is realized.
The above conventional scheme has the following drawbacks:
Because the sampling position of the measuring point of the clean flue gas CEMS instrument of the thermal power plant is close to the chimney, the sampling position is mostly negative pressure, the negative pressure value of the flue gas is greatly changed along with the change of the load, the sampling effect of the flue gas is not ideal by completely using the guide plate, and the measurement of environmental protection data is influenced;
Because the inside of the oxygen sensor is in a negative pressure state, if the sealing effect of the oxygen sensor is poor, air can enter the oxygen sensor, and the accuracy of measurement data is affected.
Disclosure of utility model
The utility model aims to solve at least one technical problem in the background art and provides a smoke sampling device.
In order to achieve the above object, the present utility model provides a smoke sampling apparatus, comprising:
An oxygen sensor structure comprising a gas sampling conduit;
The vacuum negative pressure forming structure is arranged on the gas sampling pipeline;
And the smoke sampling pipe is communicated with the gas sampling pipeline, smoke can enter the gas sampling pipeline through the smoke sampling pipe, and the smoke can enter the gas sampling pipeline to be sampled by the oxygen sensor structure through the vacuum negative pressure formed by the vacuum negative pressure forming structure.
According to one aspect of the utility model, the gas sampling conduit comprises a main conduit and a branch conduit;
One end of the main pipeline is provided with a smoke inlet, and the smoke sampling pipe is connected with the smoke inlet;
The other end of the main pipeline is provided with a negative pressure connector, and the vacuum negative pressure forming structure is arranged at the negative pressure connector;
The branch pipeline is communicated with the main pipeline, and an oxygen probe is arranged at the end part of the branch pipeline.
According to one aspect of the utility model, the vacuum negative pressure forming structure comprises an ejector and a compressed air source;
The ejector is arranged at the negative pressure connection port;
The compressed air source is connected with the ejector through a compressed air pipeline, compressed air is introduced into the ejector, and negative pressure vacuum is generated at the ejector.
According to one aspect of the utility model, the compressed air pipeline is provided with a pressure regulating valve.
According to one aspect of the utility model, a filter is provided in the flue gas sampling tube.
According to one aspect of the utility model, a baffle is arranged in the flue gas sampling tube.
According to one aspect of the utility model, a smoke sampling apparatus comprises: an oxygen sensor structure comprising a gas sampling conduit; the vacuum negative pressure forming structure is arranged on the gas sampling pipeline; and the smoke sampling pipe is communicated with the gas sampling pipeline, smoke can enter the gas sampling pipeline through the smoke sampling pipe, and the smoke is driven to enter the gas sampling pipeline to be sampled by the oxygen sensor structure through the vacuum negative pressure formed by the vacuum negative pressure forming structure. During the use, keep away from the one end that oxygen sensor structure was kept away from to the flue with the flue gas sampling tube and insert in, for example, the flue gas can slowly enter into gas sampling pipeline through the flue gas sampling tube, this process is through the work of vacuum negative pressure formation structure for produce negative pressure vacuum in the oxygen sensor structure, can make the flue gas that slowly flows through the flue gas sampling tube by the effect of negative pressure vacuum can be driven fast and get into (be inhaled) in the gas sampling pipeline, the flue gas that enters into in the gas sampling pipeline can carry out the quick sample through the oxygen sensor structure and in order to carry out follow-up measurement.
According to one aspect of the utility model, the gas sampling conduit comprises a main conduit and a branch conduit; one end of the main pipeline is provided with a smoke inlet, and the smoke sampling pipe is connected with the smoke inlet; the other end of the main pipeline is provided with a negative pressure connector, and a vacuum negative pressure forming structure is arranged at the negative pressure connector; the branch pipeline is communicated with the main pipeline, and an oxygen probe is arranged at the end part of the branch pipeline. So set up, can make the flue gas through flue gas sampling tube and flue gas entry can flow into in the trunk line of gaseous sampling tube, the negative pressure vacuum that forms through vacuum negative pressure formation structure can make the flue gas can be fast from flue gas sampling tube entering trunk line in, then rethread branch pipe and oxygen probe contact in order to realize quick accurate sample.
According to one aspect of the present utility model, a vacuum negative pressure forming structure includes an ejector and a compressed air source; the ejector is arranged at the negative pressure connection port; the compressed air source is connected with the ejector through a compressed air pipeline, compressed air is introduced into the ejector, and negative pressure vacuum is generated at the ejector. By the arrangement, compressed air can be introduced into the ejector through the compressed air source, and the ejector is exhausted through the exhaust port of the ejector, so that high-speed air flow is formed at the ejector to generate pressure drop, and negative pressure vacuum is formed. Thus, the negative pressure vacuum can suck the smoke in the smoke sampling pipe into the main pipeline rapidly, and the smoke in the main pipeline is extruded into the branch pipeline, so that the sampling is detected by the oxygen probe, the sampling process rate is high, and the smoke stabilizing result is accurate.
According to one aspect of the utility model, the compressed air line is provided with a pressure regulating valve. By the arrangement, the pressure of the compressed air can be adjusted through the pressure regulating valve, so that the size of the smoke sampling flow is controlled.
According to one aspect of the present utility model, a filter is disposed in the flue gas sampling tube. So set up, can make in entering into the flue gas in the oxygen sensor structure through the flue gas sampling tube and do not mix other impurity, can make the pipeline inside can not block up on the one hand, on the other hand can make the sample result more accurate, provide accurate data to follow-up monitoring, guarantee the accuracy of sampling.
According to one aspect of the utility model, a baffle is disposed in the flue gas sampling tube. So set up, can make based on above-mentioned negative pressure adsorption, can further accelerate the speed that flue gas in the flue gas sampling tube got into oxygen sensor structure through the guide plate, effectively improve sampling speed and accuracy.
According to the scheme of the utility model, the vacuum negative pressure forming structure is added, and the sampling loop of the clean flue gas oxygen sensor is modified (namely, the oxygen sensor structure is only provided with a flue gas inlet and no backflow hole), so that the reliability of flue gas sampling is improved. The effect of flue gas sampling can be guaranteed, and measurement deviation caused by poor sealing of the sensor is reduced.
According to the scheme of the utility model, one path of ejector, a compressed air source and a pressure regulating valve are added, so that the influence of a negative pressure state of a smoke sampling point on smoke sampling can be eliminated, and the continuity and stability of sampling can be ensured.
Drawings
Fig. 1 schematically shows a front view of a structural arrangement of a smoke sampling device according to an embodiment of the utility model.
Detailed Description
The present disclosure will now be discussed with reference to exemplary embodiments. It should be understood that the embodiments discussed are merely to enable those of ordinary skill in the art to better understand and thus practice the teachings of the present utility model and do not imply any limitation on the scope of the utility model.
As used herein, the term "comprising" and variants thereof are to be interpreted as meaning "including but not limited to" open-ended terms. The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment.
Fig. 1 schematically shows a front view of a structural arrangement of a smoke sampling device according to an embodiment of the utility model. As shown in fig. 1, in the present embodiment, the flue gas sampling apparatus includes:
an oxygen sensor structure 1 comprising a gas sampling pipe 10;
A vacuum negative pressure forming structure 2 provided on the gas sampling pipe 10;
the flue gas sampling tube 3 is communicated with the gas sampling pipeline 10, flue gas can enter the gas sampling pipeline 10 through the flue gas sampling tube 3, and the flue gas is driven to enter the gas sampling pipeline 10 through the vacuum negative pressure formed by the vacuum negative pressure forming structure 2 to be sampled by the oxygen sensor structure 1. In this embodiment, during the use, insert in the flue of, for example, thermal power plant with the one end that the flue gas sampling tube 3 kept away from oxygen sensor structure 1, the flue gas can slowly enter into gas sampling pipeline 10 through flue gas sampling tube 3, this process is through the work of vacuum negative pressure formation structure 2 for produce negative pressure vacuum in the oxygen sensor structure 1, can make the flue gas that slowly flows through flue gas sampling tube 3 by the effect of negative pressure vacuum can be driven fast and get into (be inhaled) into gas sampling pipeline 10, the flue gas that enters into gas sampling pipeline 10 can take a sample fast through oxygen sensor structure 1 in order to take a subsequent measurement.
Further, as shown in fig. 1, in the present embodiment, the gas sampling pipe 10 includes a main pipe 4 and a branch pipe 5;
One end of the main pipeline 4 is provided with a smoke inlet 11, and the smoke sampling pipe 3 is connected with the smoke inlet 11;
the other end of the main pipeline 4 is provided with a negative pressure connector 12, and the vacuum negative pressure forming structure 2 is arranged at the negative pressure connector 12;
The branch pipe 5 is communicated with the main pipe 4, and the end part of the branch pipe is provided with an oxygen probe 6. So set up, can make the flue gas flow into in the trunk line 4 of gas sampling pipeline 10 through flue gas sampling tube 3 and flue gas entry, the negative pressure vacuum that forms through vacuum negative pressure formation structure 2 can make the flue gas get into trunk line 4 from flue gas sampling tube 3 fast, then rethread branch pipe 5 and oxygen probe 6 contact in order to realize quick accurate sample.
Further, as shown in fig. 1, in the present embodiment, the vacuum negative pressure forming structure 2 includes an ejector 7 and a compressed air source 8;
the ejector 7 is arranged at the negative pressure connection port 12;
The compressed air source 8 is connected with the ejector 7 through a compressed air pipeline 9, compressed air is introduced into the ejector 7, and negative pressure vacuum is generated at the ejector 7. By the arrangement, compressed air can be introduced into the ejector 7 through the compressed air source 8, and high-speed air flow is formed at the ejector 7 through exhaust of the exhaust port of the ejector 7 to generate pressure drop, so that negative pressure vacuum is formed. Thus, the negative pressure vacuum can quickly suck the smoke in the smoke sampling tube 3 into the main pipeline 4, and the smoke in the main pipeline 4 is extruded into the branch pipeline 5, so that the sampling is detected by the oxygen probe 6, the sampling process speed is high, and the smoke stabilizing result is accurate.
Further, in the present embodiment, the compressed air line 9 is provided with a pressure regulating valve. By the arrangement, the pressure of the compressed air can be adjusted through the pressure regulating valve, so that the size of the smoke sampling flow is controlled.
Further, in the present embodiment, a filter is provided in the flue gas sampling tube 3. So set up, can make in entering into the flue gas in the oxygen sensor structure 1 through the flue gas sampling tube 3 not mix other impurity, on the one hand can make the pipeline inside can not block up, on the other hand can make the sample result more accurate, provide accurate data to follow-up monitoring, guarantee the accuracy of taking a sample.
Further, in the present embodiment, a baffle is provided in the flue gas sampling tube 3. So set up, can make based on above-mentioned negative pressure adsorption, can further accelerate the speed that flue gas in the flue gas sampling tube 3 got into oxygen sensor structure 1 through the guide plate, effectively improve sampling speed and accuracy.
According to the scheme, the vacuum negative pressure forming structure is added, and the sampling loop of the clean flue gas oxygen sensor is modified (namely, the oxygen sensor structure is only provided with a flue gas inlet and no backflow hole), so that the reliability of flue gas sampling is improved. The effect of flue gas sampling can be guaranteed, and measurement deviation caused by poor sealing of the sensor is reduced.
According to the scheme, one path of ejector, a compressed air source and a pressure regulating valve are added, so that the influence of a negative pressure state of a smoke sampling point on smoke sampling can be eliminated, and the continuity and stability of sampling can be ensured;
According to the scheme, the problem that air enters the oxygen sensor and influences the accuracy of measurement data due to the fact that the inside of the original oxygen sensor is in a negative pressure state and the sealing effect is poor is solved.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the utility model, and that, although the utility model has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the utility model as defined by the appended claims.
Claims (6)
1. Flue gas sampling device, its characterized in that includes:
an oxygen sensor structure (1) comprising a gas sampling conduit;
a vacuum negative pressure forming structure (2) arranged on the gas sampling pipeline;
And the smoke sampling tube (3) is communicated with the gas sampling pipeline, smoke can pass through the smoke sampling tube (3) to enter the gas sampling pipeline, and the smoke can be driven to enter the gas sampling pipeline by the vacuum negative pressure formed by the vacuum negative pressure forming structure (2) to be sampled by the oxygen sensor structure (1).
2. A flue gas sampling device according to claim 1, wherein the gas sampling pipe comprises a main pipe (4) and a branch pipe (5);
One end of the main pipeline (4) is provided with a smoke inlet, and the smoke sampling pipe (3) is connected with the smoke inlet;
the other end of the main pipeline (4) is provided with a negative pressure connector, and the vacuum negative pressure forming structure (2) is arranged at the negative pressure connector;
The branch pipeline (5) is communicated with the main pipeline (4), and an oxygen probe (6) is arranged at the end part of the branch pipeline.
3. The flue gas sampling device according to claim 2, wherein the vacuum negative pressure forming structure (2) comprises an ejector (7) and a compressed air source (8);
The ejector (7) is arranged at the negative pressure connection port;
The compressed air source (8) is connected with the ejector (7) through a compressed air pipeline (9), compressed air is introduced into the ejector (7), and negative pressure vacuum is generated at the ejector (7).
4. A smoke sampling device according to claim 3, characterised in that the compressed air line (9) is provided with a pressure regulating valve.
5. The flue gas sampling device according to claim 1, characterized in that a filter is provided in the flue gas sampling tube (3).
6. The flue gas sampling device according to any one of claims 1 to 5, wherein a baffle is provided in the flue gas sampling tube (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323186883.3U CN221100207U (en) | 2023-11-24 | 2023-11-24 | Flue gas sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323186883.3U CN221100207U (en) | 2023-11-24 | 2023-11-24 | Flue gas sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221100207U true CN221100207U (en) | 2024-06-07 |
Family
ID=91327135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323186883.3U Active CN221100207U (en) | 2023-11-24 | 2023-11-24 | Flue gas sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221100207U (en) |
-
2023
- 2023-11-24 CN CN202323186883.3U patent/CN221100207U/en active Active
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