A sampling device for carbon emission monitoring

By designing a sampling device including flue gas emission pipe, connecting pipe, sampling pipe and sampling bottle, the problem of sample gas being easily diluted by external air in the prior art is solved, and the accurate collection of carbon emission monitoring samples and the improvement of detection results are achieved.

CN119756967AInactive Publication Date: 2025-04-04TIANJIN 754 PHOTOELECTRIC TECH CO LTD
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Patent Information

Application Number
CN202411556244.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-13
Publication Date
2025-04-04
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing sampling device for carbon emission monitoring is prone to mix external air when collecting gas, resulting in dilution of sample gas concentration, which in turn affects the accuracy of the detection results.

Method used

A sampling device including a flue gas discharge pipe, a connecting pipe, a sampling pipe and a sampling bottle is designed. By connecting the connecting pipe with the flue gas discharge pipe, the flue gas samples discharged from the connecting pipe are collected using multiple sampling pipes and the sampling bottles to ensure that the sample is not diluted by external air.

Benefits of technology

The accurate collection and storage of flue gas samples at different times is achieved, the inaccurate detection results caused by sample dilution is avoided, and the accuracy of carbon emission monitoring and sampling effect is improved.

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Abstract

The present invention discloses a sampling device for carbon emission monitoring, which specifically relates to the technical field of carbon monitoring sampling, including: a flue gas emission pipe, an exhaust fan is installed inside one end of the flue gas emission pipe, and a connecting pipe is provided at the other end of the flue gas emission pipe; a plurality of sampling tubes, a sampling bottle is provided at the other end of the sampling tube, and an extension tube is integrally connected to the sampling bottle; a controller, a first solenoid valve is fixedly provided on the extension tube, and a second solenoid valve is fixedly provided on the connecting tube. The present invention connects the connecting tube with the flue gas emission pipe, and then collects the flue gas discharged from the inside of the connecting tube through a plurality of sampling tubes and sampling bottles, so that flue gas samples discharged at different time periods can be obtained, and the obtained samples will not be diluted and polluted by the external air, thereby avoiding the occurrence of inaccurate detection results caused by the dilution of the samples, so that the results of carbon emission monitoring are more accurate and the overall sampling effect is better.
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Description

Technical Field

[0001] The invention relates to the technical field of carbon monitoring sampling, and in particular to a sampling device for carbon emission monitoring. Background Art

[0002] Greenhouse gas emissions cause the greenhouse effect and raise global temperatures. Greenhouse gases such as carbon dioxide and nitrogen dioxide are generated by human activities or naturally. The sources of greenhouse gas emissions are mostly generated by the development of heavy industry in the world and automobile exhaust. Once greenhouse gases exceed the atmospheric standards, they will cause the greenhouse effect, causing global temperatures to rise and threatening human survival. Therefore, controlling carbon emissions has become a major issue facing all mankind. When factories or some small workshops are producing, the gases produced are discharged into the outside world from chimneys or exhaust ports. Therefore, relevant departments need to regularly sample and test the discharged gases to ensure that the carbon content of the discharged gases meets the standards.

[0003] At present, when sampling devices for carbon emission monitoring collect emission gases, they mostly collect them directly from the exhaust port. In this collection method, air will be mixed into the sampling bottle, which will cause the internal gas concentration to be diluted by external factors, resulting in inaccurate test results, thus affecting the judgment of carbon emissions and the sampling effect is not good enough. Summary of the invention

[0004] The object of the present invention is to provide a sampling device for carbon emission monitoring. By connecting a connecting tube to a flue gas exhaust pipe, and then collecting the flue gas discharged from the inside of the connecting tube through multiple sampling tubes and sampling bottles, flue gas samples discharged at different time periods can be obtained, and the obtained samples will not be diluted and contaminated by external air, thereby avoiding the occurrence of inaccurate detection results caused by sample dilution, so that the results of carbon emission monitoring are more accurate and the overall sampling effect is better, so as to solve the above-mentioned deficiencies in the technology.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a sampling device for carbon emission monitoring, comprising:

[0006] A smoke exhaust pipe, wherein an exhaust fan is installed inside one end of the smoke exhaust pipe and a connecting pipe is provided at the other end of the smoke exhaust pipe;

[0007] A plurality of sampling tubes, one end of each sampling tube passes through the outer end of a connecting tube and is connected to the inside of the connecting tube, the other end of each sampling tube is provided with a sampling bottle, the sampling bottle is integrally connected with an extension tube, one end of each extension tube extends into the other end of each sampling tube, a limiting ring is fixedly provided at the inner end of each sampling tube, one end of each extension tube is arranged outside the limiting ring, a first connecting frame is fixedly provided at the outer end of each extension tube, the other end of each sampling tube extends into the inside of the first connecting frame, and a first limiting mechanism is provided on the first connecting frame;

[0008] A controller is fixedly mounted on the outside of the connecting tube, a first solenoid valve is fixedly mounted on the extension tube, the first solenoid valve is arranged on the side of the first connecting frame close to the sampling bottle, a second solenoid valve is fixedly mounted on the connecting tube, the second solenoid valve is arranged at one end of the connecting tube away from the flue gas exhaust pipe, and both the first solenoid valve and the second solenoid valve are electrically connected to the controller.

[0009] Preferably, the first limiting mechanism includes a first limiting rod arranged at the outer end of the first connecting frame, a first connecting frame is provided with a first connecting hole at the outer end, and a first limiting hole is provided at the outer end of the sampling tube. One end of the first limiting rod passes through the first connecting hole and extends into the first limiting hole. A connecting ring is fixed at the other end of the plurality of first limiting rods to facilitate limiting and fixing the sampling tube and the extension tube.

[0010] Preferably, a first sealing gasket is fixedly provided on the outer side of the limiting ring, and one end of the extension tube is in contact with the outer side of the first sealing gasket, so that the connection between the sampling tube and the extension tube has better sealing performance.

[0011] Preferably, a fixing ring is fixedly provided on the outer side of the other end of the flue gas exhaust pipe, a second connecting frame is fixedly provided on the outer side of one end of the connecting pipe close to the flue gas exhaust pipe, and the fixing ring is arranged inside the second connecting frame to facilitate the connection between the flue gas exhaust pipe and the connecting pipe.

[0012] Preferably, a second sealing gasket is fixedly provided at one end of the connecting pipe close to the smoke exhaust pipe, and the other end of the smoke exhaust pipe is in contact with the second sealing gasket, so as to facilitate the sealing between the smoke exhaust pipe and the connecting pipe.

[0013] Preferably, a fixing plate is provided at the top and bottom ends of the second connecting frame, a connecting port is opened at the top and bottom ends of the second connecting frame, one end of the fixing plate passes through the inside of the connecting port and extends to the outside of the fixing ring, the inner side of one end of the fixing plate is an arc surface, and the other end of the fixing plate is fixedly provided with a first connecting plate, a limiting plate is fixedly provided on the inner side of the first connecting plate, and the limiting plate is arranged on one side of the second connecting frame, two third springs are fixedly provided on the inner side of the first connecting plate, and the two third springs are respectively arranged on the front and rear sides of the fixing plate and the limiting plate, one end of the third spring is fixedly connected to the outer end of the second connecting frame, and a second limiting mechanism is provided on the outer side of the limiting plate, so as to facilitate the limiting and fixing of the fixing ring and the second connecting frame.

[0014] Preferably, the second limiting mechanism includes a second limiting rod arranged on the outside of the limiting plate, the limiting plate is provided with a second connecting hole, and two second limiting holes are provided on one side of the second connecting frame. One end of the second limiting rod passes through the second connecting hole and extends into the second limiting hole, and the other end of the second limiting rod is fixedly provided with a pulling block, and the outer end of the second limiting rod is sleeved with a first spring, and the two ends of the first spring are respectively fixedly connected to the outer side of the limiting plate and the inner side of the pulling block, so as to facilitate limiting the limiting plate and the fixed plate.

[0015] Preferably, a plurality of fixed guide rods are fixedly provided on the other side of the second connecting frame, and the plurality of fixed guide rods are spaced apart from the plurality of sampling tubes. One end of the fixed guide rod passes through the connecting ring, and a second connecting plate is fixedly provided on one end of the fixed guide rod. A second spring is sleeved on the outer end of the fixed guide rod, and both ends of the second spring are respectively fixedly connected to the inner side of the second connecting plate and the outer side of the connecting ring to facilitate automatic resetting of the connecting ring.

[0016] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0017] 1. By connecting the connecting pipe with the flue gas exhaust pipe, and then collecting the flue gas discharged from the connecting pipe through multiple sampling tubes and sampling bottles, the flue gas samples discharged at different times can be obtained, and the obtained samples will not be diluted and polluted by the external air, avoiding the inaccurate test results caused by the dilution of the samples, making the carbon emission monitoring results more accurate and the overall sampling effect better;

[0018] 2. The connecting ring drives a plurality of first limiting rods to limit and fix the sampling bottle and the extension tube, so that the installation and removal process of the sampling bottle and the extension tube is simpler and more convenient, and has stronger practicality;

[0019] 3. The connection between the smoke exhaust pipe and the connecting pipe is limited and fixed by the fixing plate and the first connecting plate, so that the connection between the smoke exhaust pipe and the connecting pipe is more firm, and it is easy to remove the connecting pipe from the end of the smoke exhaust pipe, making the installation and removal process of the connecting pipe more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 A is a schematic diagram of the enlarged structure;

[0023] Figure 3 It is a schematic diagram of the overall explosion structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the overall three-dimensional cross-sectional structure of the present invention;

[0025] Figure 5 For the present invention Figure 5 Middle B is a schematic diagram of the enlarged structure;

[0026] Figure 6 It is a schematic diagram of the three-dimensional cross-sectional structure of the sampling tube of the present invention;

[0027] Figure 7 For the present invention Figure 6 Middle C is a schematic diagram of the enlarged structure;

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the connecting ring and the fixed guide rod of the present invention;

[0029] Fig. 9 For the present invention Figure 8 Middle D is a schematic diagram of the enlarged structure.

[0030] Description of reference numerals:

[0031] 1. Smoke exhaust pipe; 2. Exhaust fan; 3. Connecting pipe; 4. Sampling tube; 5. Sampling bottle; 6. Extension pipe; 7. Limiting ring; 8. First connecting frame; 9. First limiting rod; 10. First connecting hole; 11. First limiting hole; 12. First sealing gasket; 13. First solenoid valve; 14. Second solenoid valve; 15. Controller; 16. Fixed ring; 17. Second connecting frame; 18. Second sealing gasket; 19. Fixed plate; 20. Connecting port; 21. First connecting plate; 22. Limiting plate; 23. Second limiting rod; 24. Second connecting hole; 25. Second limiting hole; 26. Pull block; 27. First spring; 28. Connecting ring; 29. ​​Fixed guide rod; 30. Second connecting plate; 31. Second spring; 32. Third spring. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] The present invention provides Figure 1 , 6 A sampling device for carbon emission monitoring shown in , 7, 8 and 9, comprising:

[0034] A smoke exhaust pipe 1, an exhaust fan 2 is installed inside one end of the smoke exhaust pipe 1, a connecting pipe 3 is provided at the other end of the smoke exhaust pipe 1, a second sealing gasket 18 is fixedly provided at one end of the connecting pipe 3 close to the smoke exhaust pipe 1, and the other end of the smoke exhaust pipe 1 is in contact with the second sealing gasket 18;

[0035] A plurality of sampling tubes 4, one end of the sampling tube 4 passes through the outer end of the connecting tube 3 and is connected to the inside of the connecting tube 3, the other end of the sampling tube 4 is provided with a sampling bottle 5, the sampling bottle 5 is integrally connected with an extension tube 6, one end of the extension tube 6 extends into the other end of the sampling tube 4, a limiting ring 7 is fixedly provided at the inner end of the sampling tube 4, one end of the extension tube 6 is arranged on the outside of the limiting ring 7, a first sealing gasket 12 is fixedly provided on the outside of the limiting ring 7, one end of the extension tube 6 is in contact with the outside of the first sealing gasket 12, a first connecting frame 8 is fixedly provided at the outer end of the extension tube 6, the other end of the sampling tube 4 extends into the inside of the first connecting frame 8, and a first limiting mechanism is provided on the first connecting frame 8;

[0036] A controller 15 is fixedly arranged on the outside of the connecting tube 3. A first solenoid valve 13 is fixedly arranged on the extension tube 6. The first solenoid valve 13 is arranged on the side of the first connecting frame 8 close to the sampling bottle 5. A second solenoid valve 14 is fixedly arranged on the connecting tube 3. The second solenoid valve 14 is arranged at one end of the connecting tube 3 away from the flue gas exhaust pipe 1. Both the first solenoid valve 13 and the second solenoid valve 14 are electrically connected to the controller 15.

[0037] The first limiting mechanism includes a first limiting rod 9 arranged at the outer end of the first connecting frame 8, a first connecting hole 10 is opened at the outer end of the first connecting frame 8, a first limiting hole 11 is opened at the outer end of the sampling tube 4, one end of the first limiting rod 9 passes through the first connecting hole 10 and extends into the first limiting hole 11, and a connecting ring 28 is fixedly provided at the other end of multiple first limiting rods 9.

[0038] A plurality of fixed guide rods 29 are fixedly provided on the other side of the second connecting frame 17, and the plurality of fixed guide rods 29 are spaced apart from the plurality of sampling tubes 4. One end of the fixed guide rod 29 passes through the connecting ring 28, and a second connecting plate 30 is fixedly provided on one end of the fixed guide rod 29. A second spring 31 is sleeved on the outer end of the fixed guide rod 29, and both ends of the second spring 31 are fixedly connected to the inner side of the second connecting plate 30 and the outer side of the connecting ring 28, respectively.

[0039] The connecting pipe 3 is connected to the end of the smoke exhaust pipe 1, and the exhaust fan 2 will blow the treated smoke into the connecting pipe 3. The controller 15 controls a first solenoid valve 13 to open, and the remaining first solenoid valves 13 and second solenoid valves 14 are closed. The smoke enters the extension tube 6 and the sampling bottle 5 with the first solenoid valve 13 opened through the sampling tube 4. After sampling, the first solenoid valve 13 on the sampling bottle 5 and the extension tube 6 is closed, and then the second solenoid valve 14 is opened. After a certain period of time, the second solenoid valve 14 is closed and another first solenoid valve 13 is opened, so that another sampling bottle 5 and extension tube 6 can obtain samples. Similarly, samples of different time periods can be obtained inside multiple sampling bottles 5 and extension tubes 6. Similarly, the second solenoid valve 14 is closed and multiple first solenoid valves 13 are opened at the same time, so that multiple samples can be obtained at the same time.

[0040] After sampling is completed, the connecting ring 28 is pushed outward, and the connecting ring 28 drives multiple first limiting rods 9 to move outward and compress multiple second springs 31. One end of the first limiting rod 9 will leave the first connecting hole 10 and the first limiting hole 11, so that the extension tube 6 can be pulled out from the inside of the sampling tube 4, and then the sampling bottle 5 and the extension tube 6 can be removed. The connecting ring 28 drives multiple first limiting rods 9 to limit and fix the sampling bottle 5 and the extension tube 6, so that the installation and removal process of the sampling bottle 5 and the extension tube 6 is relatively simple and convenient, and more practical.

[0041] The present invention connects the connecting tube 3 with the flue gas exhaust pipe 1, and then collects the flue gas exhausted from the connecting tube 3 through multiple sampling tubes 4 and sampling bottles 5, so as to obtain flue gas samples exhausted at different time periods, and the obtained samples will not be diluted and contaminated by external air, thereby avoiding the occurrence of inaccurate detection results caused by sample dilution, so that the results of carbon emission monitoring are more accurate and the overall sampling effect is better. This embodiment specifically solves the problem that the sampling device for carbon emission monitoring in the prior art mostly collects the emitted gas directly from the exhaust port. In such a collection method, air will be mixed into the sampling bottle, which will cause the internal gas concentration to be diluted by external factors, and then cause inaccurate detection results, thereby affecting the judgment of carbon emissions and the sampling effect is not good enough.

[0042] The present invention provides Figure 1-5A sampling device for carbon emission monitoring is shown, wherein a fixing ring 16 is fixedly disposed on the outer side of the other end of the flue gas emission pipe 1, a second connecting frame 17 is fixedly disposed on the outer side of one end of the connecting pipe 3 close to the flue gas emission pipe 1, the fixing ring 16 is disposed inside the second connecting frame 17, fixing plates 19 are disposed at the top and bottom ends of the second connecting frame 17, connecting ports 20 are disposed at the top and bottom ends of the second connecting frame 17, one end of the fixing plate 19 passes through the inside of the connecting port 20 and extends to the outer side of the fixing ring 16, the inner side of one end of the fixing plate 19 is an arc surface, a first connecting plate 21 is fixedly disposed on the other end of the fixing plate 19, a limiting plate 22 is fixedly disposed on the inner side of the first connecting plate 21, the limiting plate 22 is disposed on one side of the second connecting frame 17, two third springs 32 are fixedly disposed on the inner side of the first connecting plate 21, the two third springs 32 are respectively disposed on the front and rear sides of the fixing plate 19 and the limiting plate 22, one end of the third spring 32 is fixedly connected to the outer end of the second connecting frame 17, and a second limiting mechanism is disposed on the outer side of the limiting plate 22.

[0043] The second limiting mechanism includes a second limiting rod 23 arranged on the outside of the limiting plate 22, a second connecting hole 24 is opened on the limiting plate 22, and two second limiting holes 25 are opened on one side of the second connecting frame 17. One end of the second limiting rod 23 passes through the second connecting hole 24 and extends into the second limiting hole 25. The other end of the second limiting rod 23 is fixedly provided with a pull block 26. The outer end of the second limiting rod 23 is sleeved with a first spring 27, and the two ends of the first spring 27 are respectively fixedly connected to the outer side of the limiting plate 22 and the inner side of the pull block 26.

[0044] When the connecting pipe 3 is installed at the end of the smoke exhaust pipe 1, the pull block 26 is pulled outward, the pull block 26 drives the second limiting rod 23 to leave the second limiting hole 25 and the second connecting hole 24 and stretch the first spring 27, the first connecting plate 21 and the fixing plate 19 are pulled outward, the first connecting plate 21 stretches the third spring 32, the fixing ring 16 is inserted into the second connecting frame 17, and then the first connecting plate 21 and the fixing plate 19 are pressed inward, the fixing plate 19 will be stuck on the outside of the fixing ring 16, the pull block 26 is released, and the pull block 26 will drive the second limiting rod 23 to be inserted into the second connecting hole 24 and the second limiting hole 25 under the elastic force of the first spring 27, so that the smoke exhaust pipe 1 and the connecting pipe 3 can be connected and fixed together. The present invention uses the fixing plate 19 and the first connecting plate 21 to limit and fix the connection between the smoke exhaust pipe 1 and the connecting pipe 3, so that the connection between the smoke exhaust pipe 1 and the connecting pipe 3 is relatively firm, and it is convenient to remove the connecting pipe 3 from the end of the smoke exhaust pipe 1, so that the installation and removal process of the connecting pipe 3 is relatively convenient and quick.

[0045] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A sampling device for carbon emission monitoring, characterized in that: include: A smoke exhaust pipe (1), wherein an exhaust fan (2) is installed inside one end of the smoke exhaust pipe (1), and a connecting pipe (3) is provided at the other end of the smoke exhaust pipe (1); A plurality of sampling tubes (4), one end of each sampling tube (4) passes through the outer end of a connecting tube (3) and is connected to the inside of the connecting tube (3); a sampling bottle (5) is provided at the other end of each sampling tube (4); an extension tube (6) is integrally connected to the sampling bottle (5); one end of each extension tube (6) extends into the inside of the other end of each sampling tube (4); a limiting ring (7) is fixedly provided at the inner end of each sampling tube (4); one end of each extension tube (6) is arranged outside the limiting ring (7); a first connecting frame (8) is fixedly provided at the outer end of each extension tube (6); the other end of each sampling tube (4) extends into the inside of the first connecting frame (8); and a first limiting mechanism is provided on the first connecting frame (8); A controller (15), wherein the controller (15) is fixedly arranged on the outside of the connecting tube (3); a first solenoid valve (13) is fixedly arranged on the extension tube (6); the first solenoid valve (13) is arranged on a side of the first connecting frame (8) close to the sampling bottle (5); a second solenoid valve (14) is fixedly arranged on the connecting tube (3); the second solenoid valve (14) is arranged at an end of the connecting tube (3) away from the flue gas exhaust pipe (1); the first solenoid valve (13) and the second solenoid valve (14) are both electrically connected to the controller (15).

2. A sampling device for carbon emission monitoring according to claim 1, characterized in that: The first limiting mechanism comprises a first limiting rod (9) arranged at the outer end of the first connecting frame (8), a first connecting hole (10) is opened at the outer end of the first connecting frame (8), a first limiting hole (11) is opened at the outer end of the sampling tube (4), one end of the first limiting rod (9) passes through the first connecting hole (10) and extends into the first limiting hole (11), and a connecting ring (28) is fixedly provided at the other end of a plurality of the first limiting rods (9).

3. A sampling device for carbon emission monitoring according to claim 1, characterized in that: A first sealing gasket (12) is fixedly provided on the outer side of the limiting ring (7), and one end of the extension tube (6) is in contact with the outer side of the first sealing gasket (12).

4. A sampling device for carbon emission monitoring according to claim 1, characterized in that: A fixing ring (16) is fixedly provided on the outside of the other end of the flue gas exhaust pipe (1), a second connecting frame (17) is fixedly provided on the outside of one end of the connecting pipe (3) close to the flue gas exhaust pipe (1), and the fixing ring (16) is arranged inside the second connecting frame (17).

5. A sampling device for carbon emission monitoring according to claim 4, characterized in that: A second sealing gasket (18) is fixedly provided at one end of the connecting pipe (3) close to the smoke exhaust pipe (1), and the other end of the smoke exhaust pipe (1) is in contact with the second sealing gasket (18).

6. A sampling device for carbon emission monitoring according to claim 4, characterized in that: The top and bottom ends of the second connecting frame (17) are both provided with fixing plates (19), and the top and bottom ends of the second connecting frame (17) are both provided with connecting openings (20). One end of the fixing plate (19) passes through the inside of the connecting opening (20) and extends to the outside of the fixing ring (16). The inner side of one end of the fixing plate (19) is an arc surface. The other end of the fixing plate (19) is fixedly provided with a first connecting plate (21), and a limiting plate (22) is fixedly provided on the inner side of the first connecting plate (21). The limiting plate (22) is arranged on one side of the second connecting frame (17). Two third springs (32) are fixedly provided on the inner side of the first connecting plate (21), and the two third springs (32) are respectively arranged on the front and rear sides of the fixing plate (19) and the limiting plate (22). One end of the third spring (32) is fixedly connected to the outer end of the second connecting frame (17), and a second limiting mechanism is provided on the outer side of the limiting plate (22).

7. A sampling device for carbon emission monitoring according to claim 6, characterized in that: The second limiting mechanism comprises a second limiting rod (23) arranged on the outer side of the limiting plate (22); a second connecting hole (24) is provided on the limiting plate (22); two second limiting holes (25) are provided on one side of the second connecting frame (17); one end of the second limiting rod (23) passes through the second connecting hole (24) and extends into the second limiting hole (25); a pulling block (26) is fixedly provided at the other end of the second limiting rod (23); a first spring (27) is sleeved on the outer end of the second limiting rod (23); two ends of the first spring (27) are respectively fixedly connected to the outer side of the limiting plate (22) and the inner side of the pulling block (26).

8. A sampling device for carbon emission monitoring according to claim 4, characterized in that: A plurality of fixed guide rods (29) are fixedly provided on the other side of the second connection frame (17), and the plurality of fixed guide rods (29) are spaced apart from the plurality of sampling tubes (4). One end of the fixed guide rod (29) passes through the connection ring (28), and a second connection plate (30) is fixedly provided on one end of the fixed guide rod (29). A second spring (31) is sleeved on the outer end of the fixed guide rod (29), and two ends of the second spring (31) are respectively fixedly connected to the inner side of the second connection plate (30) and the outer side of the connection ring (28).