A soot and smoke testing system

Abstract

The present invention relates to the technical field of test analyzers, and specifically to a soot and flue gas test system, which includes a sampling module, a pretreatment module, and an analysis module. The pretreatment module is used to pretreat the gas collected by the sampling module, and the analysis module is used to analyze the soot and flue gas of the pretreated gas. The pretreatment module includes a centrifugal chamber and a condensation chamber. A gas guide vane is provided in the centrifugal chamber, and the gas guide vane is used to guide the flow direction of the gas entering the centrifugal chamber and introduce the gas into the condensation chamber. The condensation chamber is used to cool and condense the moisture in the gas and send the condensed gas to the analysis module. With this solution, it is possible to cool down and remove water from the gas, thereby avoiding the problem that high-temperature and high-humidity gas enters the analysis module, affecting the instrument and resulting in low detection accuracy and short service life.

Description

Technical Field

[0001] The present invention relates to the technical field of test analyzers, and specifically to a dust and flue gas test system. Background Art

[0002] With the continuous improvement of industrial technology, there are more and more industrial waste gases involved in various industries. The emission of industrial waste gases involves the health impact on surrounding personnel and the pollution of the atmospheric environment. Therefore, the treatment of industrial waste gases has received attention from all aspects. To manage waste gas emissions more effectively, it is necessary to detect industrial waste gases, and they can only be discharged after meeting the corresponding standards, so as to reduce the pollution caused by waste gas emissions. In this process, dust and flue gas detection is a relatively important detection item. In the prior art, dust and flue gas detection usually uses special instruments, which include a sampling gun and an analyzer. The waste gas in the flue is collected by the sampling gun and sent to the analyzer for analysis, so as to know the concentration of particulate matter and harmful components in the waste gas.

[0003] However, in the prior art, dust and flue gas detection is usually applied to high-temperature scenarios, such as various boilers, industrial furnaces, etc. The waste gas they emit has a high temperature and high humidity. The high-temperature and high-humidity gas entering the analyzer is likely to affect its detection results, and at the same time, it is likely to damage the sensors and components inside the analyzer. Summary of the Invention

[0004] The present invention aims to provide a dust and flue gas test system to solve the technical problems of low detection accuracy and short service life in the prior art for detecting dust and flue gas in high-temperature and high-humidity gases.

[0005] The present invention provides the following basic solution:

[0006] A dust and flue gas test system includes a sampling module, a pretreatment module, and an analysis module. The pretreatment module is used to pretreat the gas collected by the sampling module, and the analysis module is used to analyze the dust and flue gas of the pretreated gas; it is characterized in that:

[0007] The pretreatment module includes a centrifugal chamber and a condensation chamber. A gas guide vane is provided in the centrifugal chamber. The gas guide vane is used to guide the flow direction of the gas entering the centrifugal chamber and introduce the gas into the condensation chamber; the condensation chamber is used to cool and condense the moisture in the gas and send the condensed gas to the analysis module.

[0008] Advantages of the basic solution:

[0009] This application improves the preprocessing module by setting a centrifugal chamber and a condensation chamber. Through the arrangement of the air guide vanes in the centrifugal chamber, the flow direction of the incoming gas is guided. By controlling the flow direction of the gas, part of the moisture is removed. For example, the air guide vanes drive the gas to rotate to generate centrifugal force, and at the same time, it impacts the inner wall of the centrifugal chamber, concentrating the moisture in the gas on the inner wall of the centrifugal chamber, thereby achieving the removal of moisture in the gas. At the same time, the gas that has undergone primary water removal enters the condensation chamber, and the condensation chamber condenses the gas to further remove the moisture in the gas.

[0010] The setting of multiple chambers extends the flow path of the gas, thereby dissipating heat from the gas. When the gas temperature decreases, the moisture in the gas is more likely to condense, thus more effectively removing the moisture in the gas. At the same time, after the gas moisture is removed, the temperature generated by the heat dissipation when the moisture in the gas comes into contact after the gas enters the analysis module is reduced. By adopting this solution, the moisture in the gas is removed, the gas humidity is reduced, and at the same time, the gas is cooled down, avoiding the entry of high-temperature and high-humidity gas into the analysis module, thereby avoiding the problems of low detection accuracy and short service life caused by the impact of high-temperature and high-humidity gas on the instrument.

[0011] Further, the centrifugal chamber includes a first chamber, and the air guide vanes are arranged in the first chamber. The air guide vanes are spirally twisted, and the top and side edges of the air guide vanes are respectively connected to the top and the inner wall of the first chamber.

[0012] Beneficial effects: The spirally twisted air guide vanes cause the gas to rotate and flow along the air guide vanes, thereby generating a certain centrifugal force, concentrating the moisture in the gas near the inner wall of the first chamber. At the same time, the gas collides with the inner wall of the first chamber, which also causes the moisture to condense, thereby achieving the removal of water from the gas.

[0013] Further, the first chamber includes a descending chamber and an ascending chamber through which the gas passes in sequence. An air inlet for the gas to enter the descending chamber is provided at the top of the first chamber, and a first transition hole for the gas in the ascending chamber to flow out is opened in the upper part of the side wall of the first chamber.

[0014] Beneficial effects: The air guide vanes divide the first chamber into a descending chamber and an ascending chamber, extending the flow path of the gas in the first chamber, thereby achieving the cooling of the gas. The cooled gas is more likely to cause the moisture to condense and thus be removed. When the gas enters the first chamber, it first descends in the descending chamber and then ascends and flows out in the ascending chamber. By adopting the method of descending first and then ascending, the centrifugal speed will be relatively fast during the descending process. Therefore, the gas with high humidity is removed first, and then the gas with part of the moisture removed is made to ascend, reducing the re-volatilization of the condensed moisture, thereby improving the water removal effect of the first chamber.

[0015] Furthermore, a water absorption cavity is provided on the side wall of the first chamber. The water absorption cavity communicates with the interior of the first chamber, and a replaceable water absorption member is provided in the water absorption cavity.

[0016] Beneficial effects: A water absorption member is provided in the water absorption cavity. The water absorption member absorbs the moisture centrifuged onto the inner side wall of the first chamber, preventing the re-evaporation of the condensed moisture, thereby improving the water removal effect of the first chamber.

[0017] Furthermore, a plurality of baffles are provided in the condensation chamber. The baffles are alternately arranged to extend the path of gas flow.

[0018] Beneficial effects: The plurality of baffles are alternately arranged, thereby extending the path of gas flow, achieving the cooling of the gas, and condensing the moisture through cooling, thereby removing the moisture in the gas.

[0019] Furthermore, the baffle includes a cooling structure. The cooling structure includes ventilation holes provided inside the baffle, and both ends of the ventilation holes communicate with the outer side wall of the condensation chamber respectively, or a low-temperature member provided inside the baffle.

[0020] Beneficial effects: The condensation chamber can also be cooled by a variety of media. For example, ventilation holes are provided inside the baffle, and the air flow is driven by the wind to accelerate heat dissipation. For example, a low-temperature member is provided inside the baffle, and the low-temperature member absorbs heat to cool the gas.

[0021] Furthermore, a water absorption layer is provided at the bottom of the condensation chamber.

[0022] Beneficial effects: The setting of the water absorption layer absorbs the condensed moisture in the condensation chamber, preventing the re-evaporation of the condensed moisture, thereby improving the water removal effect of the condensation chamber.

[0023] Furthermore, a liquid guiding surface is provided on the side of the baffle. The liquid guiding surface is used to guide the moisture towards the bottom.

[0024] Beneficial effects: The setting of the liquid guiding surface guides the condensed moisture, enabling the condensed moisture to flow to the water absorption layer for absorption. By guiding, the contact time with the gas is reduced, thereby reducing the degree of re-evaporation of the condensed moisture.

[0025] Furthermore, the centrifugal chamber further includes a second chamber. A partition plate is provided in the second chamber. The partition plate is used to divide the second chamber into a storm chamber and a guiding chamber through which the gas passes in sequence. A second transition hole facing the center of the storm chamber is provided at the center of the partition plate. The cross-sectional area of the storm chamber gradually decreases from top to bottom. The storm chamber rotates the gas entering through the first chamber downward and rises along the center at the bottom of the storm chamber into the guiding chamber.

[0026] Beneficial effects: A storm chamber and a guiding chamber are arranged in the second chamber. The storm chamber makes the gas entering the chamber rotate circumferentially and move downward due to its shape, and rise along the center of the chamber at the bottom. During this process, with the centrifugation of the gas, the particulate matters in the gas move to the periphery of the storm chamber and are guided to the bottom of the second chamber along the shape of the storm chamber.

[0027] Furthermore, a first adsorbent is in contact with the inner sidewall of the first chamber, and a second adsorbent is provided at the bottom of the second chamber. The second adsorbent is located at the bottom of the storm chamber. The analysis module is used to analyze the particulate matters on the first adsorbent and the second adsorbent after the test ends.

[0028] Beneficial effects: While centrifuging moisture in the first chamber, it also makes the particulate matters with larger particle sizes move to its inner sidewall. Through the setting of the first adsorbent, the particulate matters with larger particle sizes are collected. The setting of the second adsorbent collects the particulate matters with medium particle sizes guided to the bottom in the second chamber. Through the analysis module analyzing the particulate matters on the first adsorbent and the second adsorbent, the analysis of the gas by the analysis module is compensated according to the analysis results. At the same time, there are differences in the particle size and ease of separation of the particulate matters on the first adsorbent, the second adsorbent, and the final gas. Based on multiple analysis results, the particulate matters in the gas can be analyzed more comprehensively, providing certain optimization suggestions for the subsequent gas treatment. Description of the Drawings

[0029] Figure 1 It is a schematic cross-sectional structure diagram of the first embodiment of a soot and flue gas testing system of the present invention;

[0030] Figure 2 It is a schematic cross-sectional structure diagram of the second embodiment of a soot and flue gas testing system of the present invention;

[0031] Figure 3 It is a schematic front cross-sectional view of the condensation chamber of the third embodiment of a soot and flue gas testing system of the present invention;

[0032] Figure 4 It is a schematic cross-sectional structure diagram of the fourth embodiment of a soot and flue gas testing system of the present invention;

[0033] Figure 5 It is a schematic front cross-sectional view of the first chamber of the fifth embodiment of a soot and flue gas testing system of the present invention;

[0034] Figure 6 It is a soot and flue gas testing system of the present invention Figure 5 The enlarged schematic diagram at position A in;

[0035] Figure 7 It is a schematic cross-sectional view of the second seal of the sixth embodiment of a soot and flue gas testing system of the present invention. Detailed Embodiments

[0036] The following is a further detailed description through specific embodiments:

[0037] The reference numerals in the accompanying drawings of the specification include: the first chamber 1, the condensation chamber 2, the air guide piece 5, the air inlet 6, the baffle 7, the air outlet 8, the ventilation hole 9, the water absorption chamber 10, the water absorption layer 11, the liquid guide surface 12, the second chamber 14, the partition plate 15, the storm chamber 16, the guide chamber 17, the second transition hole 18, the third transition hole 19, the connecting column 20, the first annular ring 21, and the second annular ring 22.

[0038] Embodiment 1

[0039] A soot and flue gas testing system includes a sampling module, a pretreatment module, and an analysis module. The sampling module is used to collect gas, the pretreatment module is used to pretreat the gas collected by the sampling module, and the analysis module is used to analyze the soot and flue gas of the pretreated gas. The sampling module can use an existing gas sampling gun, and a dedicated sampling gun is selected according to different analysis items. The sampling gun is placed in the flue to collect gas. The sampling module is connected to the pretreatment module, and the pretreatment module is used to pretreat the gas, such as cooling, water removal, etc. The analysis module is connected to the pretreatment module, and the analysis module can use an existing mainframe of a soot and flue gas analyzer. The analysis module is used to analyze the corresponding analysis items of the gas passing through the pretreatment module, such as soot analysis, flue gas analysis, etc.

[0040] In this embodiment, as shown in the attached Figure 1 figure, the pretreatment module includes a centrifugal chamber and a condensation chamber 2 through which the gas passes in sequence. The centrifugal chamber includes a first chamber 1, and the first chamber 1 includes a descending chamber and an ascending chamber through which the gas passes in sequence.

[0041] An air guide piece 5 is arranged in the first chamber 1. The air guide piece 5 is used to guide the flow direction of the gas entering the centrifugal chamber and introduce the gas into the condensation chamber 2. The air guide piece 5 is arranged in a spiral twist. The top and side of the air guide piece 5 are respectively connected to the top and the inner side wall of the first chamber 1. Specifically, the air guide piece 5 is in a sheet shape. The top of the air guide piece 5 is fixedly connected to the top of the inner side of the first chamber 1. The bottom of the air guide piece 5 rotates around the midpoint of the bottom edge with the vertical direction as the axis, so that the air guide piece 5 is in a spiral twist. The two sides of the air guide piece 5 respectively extend outwards and are fixedly connected to the inner side wall of the first chamber 1, dividing the first chamber 1 into a left and right arranged descending chamber and ascending chamber, and the bottoms of the descending chamber and the ascending chamber are communicated.

[0042] The top of the first chamber 1 is provided with an air inlet 6 for gas to enter the descending chamber, and an upper part of the side wall of the first chamber 1 is provided with a first transition hole for the gas in the ascending chamber to flow out. When preprocessing the gas, the air inlet 6 is communicated with the sampling module through a silica gel tube. The gas enters the descending chamber from the air inlet 6, descends along with the air guiding piece 5, then enters the ascending chamber from below the air guiding piece 5, ascends along with the air guiding piece 5, and finally flows out from the first transition hole, thus completing the preprocessing of the gas by the first chamber 1.

[0043] The condensation chamber 2 is used for cooling and condensing the moisture in the gas and sending the condensed gas to the analysis module. A plurality of baffles 7 are arranged in the condensation chamber 2, and the baffles 7 are arranged alternately to extend the flow path of the gas. Specifically, the baffles 7 are arranged alternately up and down. The baffle 7 includes an upper baffle 7 and a lower baffle 7. The top and side walls of the upper baffle 7 are respectively fixedly connected to the top surface and the inner side wall inside the condensation chamber 2, and the bottom and side walls of the lower baffle 7 are respectively fixedly connected to the bottom surface and the inner side wall inside the condensation chamber. The upper baffle 7 and the lower baffle 7 are arranged in a cross manner, and the upper baffle 7 and the lower baffle 7 are parallel to each other.

[0044] On two side walls of the condensation chamber 2 parallel to the baffle 7, a third transition hole 19 and an air outlet 8 are respectively opened. Both the third transition hole 19 and the air outlet 8 are located in the upper part of the side wall. The number of the baffles 7 is selected according to the positions of the third transition hole 19 and the air outlet 8. In this embodiment, the number of the baffles 7 is an odd number, and the number of the upper baffles 7 is more than the number of the lower baffles 7. As shown in the attached drawing, the number of the baffles 7 is three, then the number of the upper baffles 7 is two, and the number of the lower baffles 7 is one, so as to ensure that the gas can flow along the side surface of each baffle 7, and maximize the use of the space of the condensation chamber 2 to extend the flow path of the gas. When preprocessing the gas, the air outlet 8 is communicated with the analysis module through a silica gel tube. The gas entering the condensation chamber 2 through the third transition hole 19 is blocked by the baffle 7 and sequentially flows along the side surfaces of the baffles 7, and finally flows out from the air outlet 8, thus completing the preprocessing of the gas by the condensation chamber 2. In this embodiment, the first transition hole and the third transition hole 19 have the same structure. Therefore, the gas preprocessed by the first chamber 1 enters the condensation chamber 2 through the first transition hole.

[0045] In this embodiment, the baffle 7 includes a cooling structure. The cooling structure includes a ventilation hole 9 opened inside the baffle 7. Both ends of the ventilation hole 9 are respectively communicated with the outer side wall of the condensation chamber 2. Specifically, ventilation holes 9 are opened on all the baffles 7. Both ends of the ventilation hole 9 are respectively communicated with the outer side wall of the condensation chamber 2. The hole wall of the ventilation hole 9 is communicated with the top surface or the bottom surface outside the condensation chamber 2 connected to the baffle 7. For example, the hole wall of the ventilation hole 9 in the upper baffle 7 is communicated with the top surface outside the condensation chamber 2, and the hole wall of the ventilation hole 9 in the lower baffle 7 is communicated with the bottom surface outside the condensation chamber 2. Through the flow of external air, the heat dissipation of the gas in the condensation chamber 2 is accelerated.

[0046] In other embodiments, a low-temperature component is provided inside the baffle 7. Specifically, a cooling cavity is formed inside each baffle 7, and the cooling cavities of all the baffles 7 are connected. A replacement hole is formed in the condensation chamber 2, and the replacement hole is connected to the cooling cavity. A low-temperature component, which can be ice water, is injected into and discharged from the cooling cavity through the replacement hole. The low-temperature component absorbs the heat of the gas, thereby cooling and condensing the gas in the condensation chamber 2.

[0047] Embodiment 2

[0048] As shown in the attached Figure 2 figure, water absorption cavities 10 are formed in both the side wall and the bottom of the first chamber 1. The water absorption cavities 10 are connected to the inside of the first chamber 1, and replaceable water absorption components are provided in the water absorption cavities 10. A first replacement hole is formed in the bottom of the first chamber 1, and the first replacement hole is connected to the water absorption cavity 10. A water absorption layer 11 is provided at the bottom of the condensation chamber 2. Specifically, a second replacement hole is formed in the side wall of the condensation chamber 2, and the second replacement hole is connected to the inside of the condensation chamber 2. The water absorption layer 11 includes a plurality of water absorption components, and the water absorption components are laid on the bottom of the condensation chamber 2 to form the water absorption layer 11.

[0049] The water absorption components are replaced through the first replacement hole and the second replacement hole. In the initial state, no water absorption components are provided in the water absorption cavity 10 and the condensation chamber 2. During use, the water absorption components are placed into the water absorption cavity 10 and the condensation chamber 2 through the first replacement hole and the second replacement hole, and the first replacement hole and the second replacement hole are sealed by the sealing covers provided at the first replacement hole and the second replacement hole. After the water absorption components are placed into the condensation chamber 2, the water absorption components are laid on the bottom surface inside the condensation chamber 2 to form the water absorption layer 11 by shaking. In this embodiment, the water absorption components are made of color-changing silica gel. Whether to replace the water absorption components can be determined by the color-changing silica gel.

[0050] As shown in the attached Figure 3 figure, a liquid guiding surface 12 is provided on the side surface of the baffle 7, and the liquid guiding surface 12 is used to guide the moisture towards the bottom. Specifically, the side surface of the baffle 7 is inclined from top to bottom, so that the moisture condensed on the side surface of the baffle 7 can quickly fall to the bottom of the condensation chamber 2 along the guidance of the liquid guiding surface 12, and thus be absorbed by the water absorption layer 11. Through the arrangement of the water absorption components and the water absorption layer 11, the condensed moisture can be absorbed, preventing the condensed moisture from volatilizing again, thereby reducing the humidity of the gas.

[0051] Embodiment 3

[0052] As shown in the attached Figure 4 figure, the centrifugal chamber further includes a second chamber 14, and the second chamber 14 is located between the first chamber 1 and the condensation chamber 2. The gas sequentially passes through the first chamber 1, the second chamber 14, and the condensation chamber 2.

[0053] A partition plate 15 is provided in the second chamber 14. The partition plate 15 is used to divide the second chamber 14 into a storm chamber 16 and a guiding chamber 17 through which gas passes in sequence. The storm chamber 16 and the guiding chamber 17 are arranged vertically. A second transition hole 18 facing the center of the storm chamber 16 is opened at the center of the partition plate 15. The cross-sectional area of the storm chamber 16 decreases sequentially from top to bottom, that is, the storm chamber 16 is funnel-shaped. The storm chamber 16 rotates the gas entering through the first chamber 1 downward and rises along the center at the bottom of the storm chamber 16 into the guiding chamber 17.

[0054] The first transition hole communicates the first chamber 1 and the storm chamber 16 of the second chamber 14, and the third transition hole 19 communicates the guiding chamber 17 of the second chamber 14 and the condensation chamber 2. During use, the gas pretreated in the first chamber 1 enters the storm chamber 16, rotates downward along the guiding direction of the storm chamber 16, rises vertically along the center of the storm chamber 16, then enters the guiding chamber 17 through the second transition hole 18, and finally enters the condensation chamber 2 through the third transition hole 19.

[0055] Embodiment 4

[0056] A first adsorbent is in contact with the inner side wall of the first chamber 1, and a second adsorbent is provided at the bottom of the second chamber 14. The second adsorbent is located at the bottom of the storm chamber 16. Specifically, a vertical strip-shaped insertion opening is provided on the side wall of the first chamber 1. The first adsorbent is inserted into the first chamber 1 through the strip-shaped insertion opening and is in contact with the inner side wall of the first chamber 1. At the same time, another horizontal strip-shaped insertion opening is provided on the bottom of the first chamber 1. The first adsorbent is inserted into the first chamber 1 through the other strip-shaped insertion opening and is in contact with the inner bottom surface of the first chamber 1. A horizontal collection port is opened at the bottom of the second chamber 14. The second adsorbent is inserted into the storm chamber 16 through the collection port and is in contact with the bottom of the storm chamber 16. In this embodiment, both the first adsorbent and the second adsorbent are filter meshes, and high-density filter meshes are selected to collect particulate matter.

[0057] The analysis module is used to analyze the particulate matter on the first adsorbent and the second adsorbent after the test ends. Specifically, the analysis module is used to analyze the particulate matter on the first adsorbent after the test ends to generate a first analysis result, analyze the particulate matter on the second adsorbent after the test ends to generate a second analysis result, and analyze the particulate matter of the gas entering through the pretreatment module to generate a third analysis result. During soot analysis, the analysis module analyzes the particulate matter on the first adsorbent and the second adsorbent by the weighing measurement method. The analysis module is also used to compensate the third analysis result according to the first analysis result and the second analysis result, and improve the detection accuracy of soot analysis through compensation.

[0058] In other embodiments, the analysis module is further configured to analyze the first analysis result, the second analysis result, and the third analysis result respectively. Relatively speaking, the particulate matter collected in the first chamber 1 has a larger particle size, a larger mass, or is easier to separate from the gas. Relatively speaking, the particulate matter collected in the second chamber 14 has a moderate particle size, a moderate mass, or is relatively easy to separate from the gas. And relatively speaking, the particulate matter finally collected by the analysis module has a smaller particle size, a smaller mass, or is not easy to separate from the gas. By analyzing the first analysis result, the second analysis result, and the third analysis result, optimization suggestions for gas treatment are generated, and based on the differences in particle size, mass, and ease of separation of the particulate matter, certain optimization suggestions are provided for the subsequent gas treatment.

[0059] Embodiment Five

[0060] As shown in the appendix Figure 5 As shown, a sealing structure is provided at the connection between the pretreatment module and the outside. Specifically, sealing structures are provided at the air inlet 6, the air outlet 8, the strip-shaped insertion port, and the collection port. The sealing structure includes a first sealing member and a second sealing member used in cooperation. The first sealing member is provided at the air inlet 6, the air outlet 8, the strip-shaped insertion port, and the collection port. The second sealing member is provided in the silicone tube for connecting the air inlet 6 and the air outlet 8, and in the silicone cover for sealing the strip-shaped insertion port and the collection port.

[0061] As shown in the appendix Figure 6 As shown, the first sealing member includes a connecting column 20. The connecting column 20 is hollow, and one end of the connecting column 20 is fixedly connected to the pretreatment module. A plurality of first annular rings 21 are sleeved on the outer peripheral wall of the connecting column 20, that is, the inner ring of the first annular ring 21 is fixedly connected to the outer peripheral wall of the connecting column 20, and the first annular ring 21 is inclined towards the pretreatment module from the center to the periphery. As shown in the appendix Figure 7 As shown, the second sealing member is provided on the inner wall of the silicone tube or the silicone cover connected to the connecting column 20. The second sealing member includes a plurality of second annular rings 22. The outer ring of the second annular ring 22 is fixedly connected to the inner side wall of the silicone tube or the silicone cover. The second annular ring 22 and the first annular ring 21 have the same inclination direction, and the angle between the second annular ring 22 and the horizontal plane is greater than the angle between the first annular ring 21 and the horizontal plane. The width of the second annular ring 22 gradually decreases in the direction away from the pretreatment module. The second annular ring 22 with the smallest width can abut against the bottom of the first annular ring 21 when the first sealing member and the second sealing member are used in cooperation. The number of both the first annular ring 21 and the second annular ring 22 is greater than three. The first annular ring 21 and the second annular ring 22 are made of an elastic material. In this embodiment, the number of the first annular ring 21 is four, the number of the second annular ring 22 is three, and the first annular ring 21 and the second annular ring 22 are made of silicone material.

[0062] Taking the sealed air inlet 6 as an example, the first seal is arranged at the air inlet 6, and the second seal is arranged on the silica gel tube communicated with the air inlet 6. When connecting, the silica gel tube is inserted into the connecting column 20. During the connection, the second annular ring 22 is extruded to be below the first annular ring 21, and the first annular ring 21 and the second annular ring 22 cross and abut against each other to realize the connection and sealing of the silica gel tube and the connecting column 20. During the air intake process, the gas impacts the first annular ring 21, deepening the extrusion between the first annular ring 21 and the second annular ring 22, so as to achieve a better sealing effect and avoid gas leakage.

[0063] The above are only embodiments of the present invention. Specific structures and common knowledge such as characteristics that are well-known in the art are not described in detail here. Those of ordinary skill in the art know all the common general technical knowledge in the technical field to which the invention belongs before the application date or the priority date, can know all the existing technologies in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application, combine their own abilities to complete and implement this solution. Some typical well-known structures or well-known methods should not become an obstacle for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A soot and flue gas testing system, comprising a sampling module, a pretreatment module, and an analysis module. The pretreatment module is used to pretreat the gas collected by the sampling module, and the analysis module is used to analyze the soot and flue gas of the pretreated gas; characterized in that: The pretreatment module includes a centrifugal chamber and a condensation chamber. A gas guide vane is arranged in the centrifugal chamber. The gas guide vane is used to guide the flow direction of the gas entering the centrifugal chamber and introduce the gas into the condensation chamber; the condensation chamber is used to cool and condense the moisture in the gas and send the condensed gas into the analysis module; The centrifugal chamber includes a first chamber. The gas guide vane is arranged in the first chamber. The gas guide vane is spirally twisted. The top and side of the gas guide vane are respectively connected to the top and inner wall of the first chamber; the first chamber is divided into a descending chamber and an ascending chamber arranged left and right, and the bottoms of the descending chamber and the ascending chamber are communicated; The first chamber includes a descending chamber and an ascending chamber through which the gas passes in sequence. An air inlet for the gas to enter the descending chamber is provided at the top of the first chamber, and a first transition hole for the gas in the ascending chamber to flow out is opened in the upper part of the side wall of the first chamber; The centrifugal chamber further includes a second chamber. A partition plate is arranged in the second chamber. The partition plate is used to divide the second chamber into a storm chamber and a guiding chamber through which the gas passes in sequence. A second transition hole facing the center of the storm chamber is opened in the center of the partition plate. The cross-sectional area of the storm chamber decreases sequentially from top to bottom. The storm chamber rotates the gas entering through the first chamber downward and rises along the center at the bottom of the storm chamber into the guiding chamber; A first adsorbent is in contact with the inner wall of the first chamber, and a second adsorbent is arranged at the bottom of the second chamber. The second adsorbent is located at the bottom of the storm chamber; the analysis module is used to analyze the particulate matter on the first adsorbent and the second adsorbent after the test; A sealing structure is provided at the connection between the pretreatment module and the outside. The sealing structure includes a first seal and a second seal used in cooperation. The first seal is arranged on the air inlet, air outlet, strip-shaped insertion port, and collection port. The second seal is arranged in the silica gel tube for connecting the air inlet and air outlet, and in the silica gel cover for sealing the strip-shaped insertion port and collection port; The first seal includes a connecting column. The connecting column is hollow. One end of the connecting column is fixedly connected to the pretreatment module; a plurality of first annular rings are sleeved on the outer peripheral wall of the connecting column; the first annular rings are inclined from the center to the periphery towards the pretreatment module; the second seal is arranged on the inner wall of the silica gel tube or silica gel cover connected to the connecting column. The second seal includes a plurality of second annular rings. The outer ring of the second annular ring is fixedly connected to the inner side wall of the silica gel tube or silica gel cover. The inclination directions of the second annular ring and the first annular ring are the same, and the angle between the second annular ring and the horizontal plane is greater than the angle between the first annular ring and the horizontal plane; the width of the second annular ring decreases sequentially in the direction away from the pretreatment module. The second annular ring with the smallest width can abut against the bottom of the first annular ring when the first seal and the second seal are used in cooperation; the number of both the first annular ring and the second annular ring is greater than three, and the first annular ring and the second annular ring are made of elastic materials.

2. The flue dust and flue gas testing system according to claim 1, wherein: A water absorption cavity is provided on the side wall of the first chamber. The water absorption cavity communicates with the interior of the first chamber, and a replaceable water absorption member is provided in the water absorption cavity.

3. The flue dust and flue gas testing system according to claim 1, characterized in that: A plurality of baffles are provided in the condensation chamber, and the baffles are alternately arranged to extend the path of gas flow.

4. The flue dust and flue gas testing system according to claim 3, wherein: The baffle includes a cooling structure, and the cooling structure includes ventilation holes provided inside the baffle, both ends of the ventilation holes communicate with the outer side wall of the condensation chamber respectively, or low-temperature members provided inside the baffle.

5. The flue dust and flue gas testing system according to claim 3, characterized in that: A water absorption layer is provided at the bottom of the condensation chamber.

6. The flue dust and flue gas testing system according to claim 5, wherein: A liquid guiding surface is provided on the side surface of the baffle, and the liquid guiding surface is used to guide moisture towards the bottom.

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