CN116878975A - Flue gas sampling device - Google Patents
Flue gas sampling device Download PDFInfo
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- CN116878975A CN116878975A CN202311155289.XA CN202311155289A CN116878975A CN 116878975 A CN116878975 A CN 116878975A CN 202311155289 A CN202311155289 A CN 202311155289A CN 116878975 A CN116878975 A CN 116878975A
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- 238000005070 sampling Methods 0.000 title claims abstract description 179
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000003546 flue gas Substances 0.000 title claims abstract description 34
- 239000000779 smoke Substances 0.000 claims description 36
- 238000005192 partition Methods 0.000 claims description 24
- 239000004744 fabric Substances 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 12
- 230000005484 gravity Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to the technical field of flue gas pollution detection devices, and particularly discloses a flue gas sampling device, which comprises: the device comprises a shell, a walking assembly and a sampling assembly, wherein the bottom end of the shell is provided with a plurality of sampling ports, the walking assembly is distributed on the side wall of the shell at intervals along the circumferential direction, the walking assembly comprises a rotating arm, a first driving piece and a roller, one end of the rotating arm is rotationally connected with the side wall of the shell through a torsion spring, the other end of the rotating arm is rotationally matched with the roller, the first driving piece is arranged on the rotating arm, the sampling assembly comprises a second driving piece and a sampling tube, the sampling tube is rotationally matched inside the shell, a plurality of sampling cavities are distributed in the sampling tube at intervals along the circumferential direction, and the second driving piece is arranged inside the shell; the flue gas sampling device disclosed by the invention realizes the movement in the flue through the travelling assembly, and the sampling at different positions in the flue is realized by matching with the rotation of the sampling tube.
Description
Technical Field
The invention relates to the technical field of flue gas pollution detection devices, in particular to a flue gas sampling device.
Background
A smoke sampler is a device for collecting and analyzing various components and pollutants in smoke. The smoke is extracted from a source or a discharge port to a sampler for analysis, so that the composition, concentration and pollutant discharge condition in the smoke are known. The method can provide key data about the combustion process, emission source and pollutant control effect, and provide scientific basis for making environmental protection policy, evaluating environmental risk, improving production process and the like. In addition, the flue gas sampler is also widely applied to the fields of atmospheric pollution, industrial safety, indoor environment detection and the like.
The Chinese patent document CN113624572B discloses a flue gas constant-speed sampling device of a differential pressure measurement method, the device adopts the differential pressure method to perform differential pressure measurement on a pipeline of a flue gas sampling pipe, dynamic pressure and static pressure before flue gas is heated are obtained, the flow rate of sample gas is calculated and controlled by the data to realize constant-speed sampling, the sample gas is calculated before heating, temperature compensation is not needed, the calculation steps and equipment are simplified, the purpose of reducing the failure occurrence rate is further achieved, and the detection is more accurate. However, such sampling devices can only sample at a fixed location, and contaminants in the flue gas may adhere to the inner wall of the flue during the flow of the flue gas in the flue, thereby resulting in inaccurate sampling results.
Disclosure of Invention
The invention provides a smoke sampling device, which aims to solve the problems of inaccurate sampling results caused by different content of smoke pollutants at different positions in a flue in the related technology.
The flue gas sampling device of the present invention comprises: a housing, a travel assembly, and a sampling assembly;
the bottom end of the shell is provided with a sampling port;
the plurality of running assemblies are distributed on the side wall of the shell at intervals along the circumferential direction, each running assembly comprises a rotating arm, a first driving piece and a roller, one end of each rotating arm is rotationally connected with the side wall of the shell through a torsion spring, the other end of each rotating arm is rotationally matched with the corresponding roller, and the first driving piece is arranged on each rotating arm and used for controlling the corresponding roller to rotate;
the sampling assembly comprises a second driving piece and a sampling tube, the sampling tube is in running fit inside the shell, a plurality of sampling cavities distributed at intervals along the circumferential direction of the sampling tube are arranged in the sampling tube, the sampling cavities can correspond to the sampling ports, and the second driving piece is arranged inside the shell and used for driving the sampling tube to rotate.
According to the flue gas sampling device, the flue gas sampling device can move in the flue through the travelling assembly, and the flue gas sampling device can sample at different positions by aligning different sampling cavities with sampling ports.
Preferably, a through hole is formed in the center of the sampling tube, openings are formed in the top end and the bottom end of the shell, and the through hole is communicated with the openings in the top end and the bottom end of the shell; the through holes can enable the smoke to flow along the passing direction, so that the smoke sampling device is prevented from blocking the flue, and the sampling accuracy is affected.
Preferably, the first driving piece is fixedly connected inside the rotating arm, a first friction wheel is arranged on the roller, a second friction wheel is arranged at the output end of the first driving piece, and the first friction wheel is in friction fit with the second friction wheel.
Preferably, the second driving part is fixedly connected inside the shell, a first gear is arranged at the output end of the second driving part, a second gear is fixedly connected on the outer wall of the sampling tube, and the first gear is meshed with the second gear.
Preferably, a gas flow rate sensor is arranged in the through hole, a third driving piece and a partition plate are arranged in each sampling cavity, the partition plate is in sliding fit with the side wall of the sampling cavity and can move along the sampling cavity, the gas flow rate sensor is respectively and electrically connected with each third driving piece, and the third driving pieces can drive the corresponding partition plates to move; the gas flow rate sensor can detect the flow speed of the smoke, so that the third driving piece is controlled, the rising speed of the partition plate is kept consistent with the flow speed of the smoke, the smoke is prevented from being gathered in the sampling cavity, the accuracy of smoke sampling is ensured, and the error of subsequent detection is reduced.
Preferably, the output end of the third driving member is wound with a pull rope, the end part of the pull rope is fixedly connected with the partition board, the third driving member rotates forward to enable the pull rope to be tensioned, so that the partition board is driven to ascend, the third driving member rotates reversely to enable the pull rope to be loosened, and the partition board descends under the action of gravity.
Preferably, a limiting block is arranged at the bottom of the inner wall of the sampling cavity, and the top end of the limiting block can be abutted against the bottom surface of the partition plate; the limiting block can prevent the separation plate from falling off the sampling cavity.
Preferably, shielding cloth is further arranged on the outer side of the shell, the shielding cloth is distributed on the outer side of the shell in a wave shape, and two ends of the shielding cloth are respectively and fixedly connected to the corresponding rotating arms.
Preferably, a first groove is formed in the side wall of the shell, and the top end of the rotating arm is rotatably connected in the first groove through a torsion spring.
Preferably, the roller is sleeved with a friction sleeve; the friction sleeve can increase the friction force between the roller and the inner wall of the flue.
The beneficial effects are that:
according to the flue gas sampling device provided by the invention, the running components are arranged on the periphery of the shell, the torsion spring is used for applying pressure to the rotating arm, so that the roller at the end part of the rotating arm is tightly pressed on the inner wall of the flue, the roller is in static friction fit with the flue, the flue gas sampling device is fixed in the flue, and the first driving piece drives the roller to rotate, so that the flue gas sampling device moves in the flue. When the flue gas sampling device moves to the sampling position, the sampling cavity is rotated to the sampling port for sampling, the sampling tube is rotated after sampling is completed, the sampling cavity after sampling is sealed, and when the flue gas sampling device moves to the next sampling position, the other sampling cavity is rotated to the sampling port for sampling again, so that sampling of different positions in the flue is realized.
Drawings
Fig. 1 is a schematic structural diagram of a smoke sampling apparatus according to an embodiment of the invention.
Fig. 2 is a schematic diagram of a walking component according to an embodiment of the invention.
Fig. 3 is a schematic diagram of a roller drive according to an embodiment of the invention.
Fig. 4 is a schematic view of the structure of the housing according to the embodiment of the present invention.
Fig. 5 is a schematic view of the bottom structure of the housing according to an embodiment of the present invention.
FIG. 6 is a schematic diagram of a transmission of a sampling tube according to an embodiment of the present invention.
FIG. 7 is a schematic diagram of the internal structure of a sampling tube according to an embodiment of the present invention.
Fig. 8 is a partial cross-sectional view of a sampling cartridge according to an embodiment of the present invention.
Reference numerals:
1. a housing; 21. a rotating arm; 22. a roller; 23. a first driving member; 24. a first friction wheel; 25. a second friction wheel; 31. a sampling tube; 321. a first sampling chamber; 322. a second sampling chamber; 323. a third sampling chamber; 324. a fourth sampling chamber; 33. a second driving member; 34. a first gear; 35. a second gear; 4. a first groove; 5. a sampling port; 6. a through hole; 7. a gas flow rate sensor; 8. a third driving member; 9. a pull rope; 10. a partition plate; 11. a limiting block; 12. shielding cloth.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
As shown in fig. 1, the flue gas sampling apparatus of the present invention includes: a shell 1, a walking component and a sampling component.
As shown in fig. 1, 4 and 5, the side wall of the housing 1 is provided with four first grooves 4 extending along the up-down direction, the first grooves 4 are evenly distributed at intervals along the circumferential direction of the housing 1, the bottom of the housing 1 is provided with sampling ports 5, and the centers of the bottom and the top of the housing 1 are provided with openings.
As shown in fig. 1 to 3, two running assemblies are disposed in each first groove 4 at intervals in the up-down direction, and each running assembly includes a rotating arm 21, a first driving member 23 and a roller 22. The top of the rotating arm 21 is rotatably connected in the first groove 4 through a torsion spring, the bottom of the rotating arm 21 is rotatably connected with a roller 22, a cavity is formed in the rotating arm 21, and the first driving piece 23 is fixedly connected in the cavity of the rotating arm 21. The first driving piece 23 is the motor, and the tip of gyro wheel 22 is equipped with first friction wheel 24, and the output of first driving piece 23 is equipped with second friction wheel 25, and first friction wheel 24 and second friction wheel 25 friction fit for can drive gyro wheel 22 rotation when the output of first driving piece 23 rotates, when first driving piece 23 stops rotating, under the frictional force effect between first friction wheel 24 and second friction wheel 25, can control gyro wheel 22 and stop rotating.
The rotating arm 21 is connected with the first groove 4 through a torsion spring, and the torsion spring always applies elastic force to the rotating arm 21, so that the bottom end of the rotating arm 21 rotates along the direction away from the shell 1. When the flue gas sampling device is positioned in the flue, the bottom ends of the rotating arms 21 around the shell 1 are all rotated outwards, the rollers 22 at the bottom ends of the rotating arms 21 are abutted against the inner wall of the flue, and the rollers 22 are in static friction fit with the inner wall of the flue, so that the flue gas sampling device can be static relative to the flue. When the smoke sampling device needs to move up and down in the flue, the first driving piece 23 drives the roller 22 to rotate forward, so that the smoke sampling device can move up, the first driving piece 23 drives the roller 22 to rotate reversely, and the smoke sampling device can move down.
The friction sleeve is sleeved on the roller 22, and is a rubber sleeve, so that the friction force between the roller 22 and the inner wall of the flue can be increased by the friction sleeve, and the flue gas sampling device can be prevented from sliding off.
As shown in fig. 1, 5 to 7, the sampling assembly includes a second driving member 33 and a sampling barrel 31. The sampling tube 31 is in a rotating fit inside the shell 1, the second driving piece 33 is fixedly connected inside the shell 1, the second driving piece 33 is a motor, a first gear 34 is arranged at the output end of the second driving piece, a second gear 35 is fixedly connected to the outer wall of the sampling tube 31, the first gear 34 is meshed with the second gear 35, the second gear 35 and the sampling tube 31 synchronously rotate, and the second driving piece 33 drives the first gear 34 to rotate, so that the sampling tube 31 can be driven to rotate. The inside sampling tube 31 has a plurality of sampling chamber that evenly distributes along its circumference interval, and the sampling chamber has four, is first sampling chamber 321, second sampling chamber 322, third sampling chamber 323 and fourth sampling chamber 324 respectively, and the sampling chamber is the arc chamber, and its top and bottom all have the opening, and the bottom of sampling chamber ends with the bottom surface of shell 1 and supports, and the opening shape of sampling mouth 5 and the sampling chamber bottom of shell 1 bottom is the same, can realize different sampling chamber and sampling mouth 5 alignment through the rotation of sampling tube 31, can realize the sample in different sampling chambers. It will be appreciated that in other embodiments, the number of sampling chambers may be 3, 5, 6 or 7, etc., and that different numbers of sampling chambers may be used as desired.
As shown in fig. 4, 7 and 8, the center of the sampling tube 31 is provided with a through hole 6, and the through hole 6 is communicated with the openings at the top end of the shell 1 and the bottom end of the shell 1, so that the flue gas can pass through the flue gas sampling device along the through hole 6, and the flue gas sampling device is prevented from blocking the flue, and the flue gas sampling result is affected. The top of the through hole 6 is provided with a gas flow rate sensor 7, and the gas flow rate sensor 7 can detect the flow rate of the flue gas in the flue. Every sampling cavity is equipped with third driving piece 8 and baffle 10, and baffle 10 and sampling cavity's lateral wall cooperation that slides, baffle 10 can reciprocate, and the bottom surface of shell 1 and baffle 10 seal sampling cavity's lower extreme and upper end respectively to realize the seal to the sampling cavity. The top in the sample chamber is established to third driving piece 8, and third driving piece 8 is the motor, and the winding has stay cord 9 on the output of third driving piece 8, and stay cord 9's bottom and baffle 10 fixed connection. The third driving piece 8 rotates positively to tighten the pull rope 9 so as to drive the partition board 10 to move upwards, the third driving piece 8 rotates reversely to loosen the pull rope 9, and the partition board 10 can move downwards under the action of gravity. The gas flow rate sensor 7 is respectively and electrically connected with the third driving piece 8 in each sampling cavity, and can detect the flow speed of the smoke when the sampling cavity samples, so that the third driving piece 8 is controlled to drive the ascending speed of the partition board 10, the ascending speed of the partition board 10 is consistent with the flow speed of the smoke, the smoke is prevented from being gathered in the sampling cavity, the accuracy of collecting the smoke is ensured, and the error of subsequent detection is reduced.
The bottom of sampling cavity inner wall still is equipped with stopper 11, and when baffle 10 moved to the lowest department downwards under the effect of gravity, the bottom surface of baffle 10 was stopped with the top of stopper 11, and stopper 11 is used for preventing that baffle 10 breaks away from the sampling cavity.
As shown in fig. 1, shielding cloth 12 distributed along the circumferential direction of the housing 1 is further arranged on the outer side of the housing 1, the shielding cloth 12 is distributed in a wave shape, and two ends of the shielding cloth 12 are fixedly connected with rotating arms 21 at corresponding positions respectively. The shielding cloth 12 can collect dust particles in the upper flue when the dust particles fall down, thereby preventing the dust particles from being mixed into the flue gas and affecting the sampling accuracy. When the rotating arm 21 is retracted into the first groove 4, the shielding cloth 12 is correspondingly attached to the outer wall of the shell 1, so that space occupation is reduced.
According to the smoke sampling device provided by the embodiment of the invention, when not in use, the traveling assembly is received into the first groove 4 through the external binding rope, so that the space occupation of the smoke sampling device is reduced, and the smoke sampling device is convenient to carry. When the smoke sampling device is used, the smoke sampling device is placed in the flue, and the rollers 22 around the shell 1 are in friction fit with the inner wall of the flue under the action of the torsion spring, so that the smoke sampling device can grasp the inner wall of the flue, and the smoke sampling device is prevented from sliding off. After reaching the designated position, the third driving member 8 in the first sampling cavity 321 is controlled to rotate by the gas flow rate sensor 7, so that the partition board 10 in the first sampling cavity 321 moves upwards from the bottom end of the first sampling cavity 321, and when the partition board 10 moves to the top end of the first sampling cavity 321 to finish sampling, the second driving member 33 controls the sampling tube 31 to rotate, so that the second sampling cavity 322 is aligned with the sampling port 5. The first driving member 23 controls the roller 22 to rotate, so that the smoke sampling device moves to the next sampling position, and the second sampling cavity 322 is used for sampling, and the sampling process is the same as that of the first sampling cavity 321. After the first sampling cavity 321, the second sampling cavity 322 and the third sampling cavity 323 respectively finish sampling at different positions of the flue, the fourth sampling cavity 324 is aligned with the sampling port 5, and at this time, the first sampling cavity 321, the second sampling cavity 322 and the third sampling cavity 323 are sealed through the bottom surface of the casing 1 and the partition board 10, so that sampling accuracy is ensured.
In the description of the present invention, 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", "axial", "radial", "circumferential", 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 invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
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 at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. A smoke sampling device, comprising:
the device comprises a shell (1), wherein a sampling port (5) is arranged at the bottom end of the shell (1);
the walking assembly is multiple and distributed on the side wall of the shell (1) at intervals along the circumferential direction, and comprises a rotating arm (21), a first driving piece (23) and rollers (22), one end of the rotating arm (21) is rotationally connected with the side wall of the shell (1) through torsion springs, the rollers (22) are rotationally matched with the other end of the rotating arm (21), and the first driving piece (23) is arranged on the rotating arm (21) and used for controlling the rollers (22) to rotate;
the sampling assembly comprises a second driving piece (33) and a sampling tube (31), the sampling tube (31) is in running fit inside the shell (1), a plurality of sampling cavities distributed along the circumferential direction at intervals are arranged in the sampling tube (31), the sampling cavities can correspond to the sampling ports (5), and the second driving piece (33) is arranged inside the shell (1) and is used for driving the sampling tube (31) to rotate.
2. The flue gas sampling device according to claim 1, wherein the center of the sampling tube (31) is provided with a through hole (6), the top end and the bottom end of the housing (1) are provided with openings, and the through hole (6) is communicated with the openings of the top end and the bottom end of the housing (1).
3. The smoke sampling device according to claim 1, wherein the first driving member (23) is fixedly connected inside the rotating arm (21), a first friction wheel (24) is arranged on the roller (22), a second friction wheel (25) is arranged at the output end of the first driving member (23), and the first friction wheel (24) is in friction fit with the second friction wheel (25).
4. The smoke sampling device according to claim 1, wherein the second driving member (33) is fixedly connected inside the housing (1), a first gear (34) is arranged at the output end of the second driving member (33), a second gear (35) is fixedly connected to the outer wall of the sampling tube (31), and the first gear (34) is meshed with the second gear (35).
5. The flue gas sampling device according to claim 2, wherein a gas flow rate sensor (7) is arranged in the through hole (6), a third driving member (8) and a partition plate (10) are arranged in each sampling cavity, the partition plate (10) is in sliding fit with the side wall of the sampling cavity, the partition plate can move along the sampling cavity, the gas flow rate sensor (7) is electrically connected with each third driving member (8) respectively, and the third driving members (8) can drive the corresponding partition plate (10) to move.
6. The smoke sampling device according to claim 5, wherein the output end of the third driving member (8) is wound with a pull rope (9), the end of the pull rope (9) is fixedly connected with the partition board (10), the third driving member (8) rotates forward to enable the pull rope (9) to be tensioned, so that the partition board (10) is driven to ascend, the third driving member (8) rotates reversely to enable the pull rope (9) to be loosened, and the partition board (10) descends under the action of gravity.
7. The smoke sampling device according to claim 5, wherein a limiting block (11) is arranged at the bottom of the inner wall of the sampling cavity, and the top end of the limiting block (11) can be abutted against the bottom surface of the partition board (10).
8. The smoke sampling device according to claim 1, wherein shielding cloth (12) is further arranged on the outer side of the housing (1), the shielding cloth (12) is distributed on the outer side of the housing (1) in a wave shape, and two ends of the shielding cloth (12) are respectively and fixedly connected to the corresponding rotating arms (21).
9. The smoke sampling device according to claim 1, wherein a first groove (4) is provided on the side wall of the housing (1), and the top end of the rotating arm (21) is rotatably connected in the first groove (4) by a torsion spring.
10. The smoke sampling device according to claim 1, wherein the rollers (22) are provided with friction sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311155289.XA CN116878975A (en) | 2023-09-08 | 2023-09-08 | Flue gas sampling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311155289.XA CN116878975A (en) | 2023-09-08 | 2023-09-08 | Flue gas sampling device |
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| Publication Number | Publication Date |
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| CN116878975A true CN116878975A (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311155289.XA Pending CN116878975A (en) | 2023-09-08 | 2023-09-08 | Flue gas sampling device |
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| CN (1) | CN116878975A (en) |
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| CN218098511U (en) * | 2022-07-06 | 2022-12-20 | 南京波瑞自动化科技有限公司 | Flue gas sampling device capable of fully automatically adjusting sampling speed |
| CN115046812A (en) * | 2022-07-28 | 2022-09-13 | 项宪亚 | Waste gas sampling device for atmosphere pollution prevention and control |
| CN217980909U (en) * | 2022-07-29 | 2022-12-06 | 上海昂未环保发展有限公司 | Collection device capable of sampling for multiple times for sewage treatment |
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