A terminal sampling device for carbon emission detection in thermal power system

Abstract

The present invention discloses a terminal sampling device for carbon emission detection of a thermal power system, which relates to the technical field of carbon emission detection, and comprises: a detection box and a detection mechanism arranged on one side of the detection box, wherein a primary filtering mechanism and a secondary filtering mechanism are also arranged in the detection box; the primary filtering mechanism comprises a filter cartridge, wherein a filter disc is arranged inside the top end of the filter cartridge for filtering large particles of dust in the flue gas; the secondary filtering mechanism comprises a filter box, wherein positive electrode plates are arranged on both sides of the filter box, and a plurality of negative electrode columns are arranged between the two positive electrode plates for removing fine particles of dust in the flue gas; the detection mechanism comprises a sealing sleeve and a support platform arranged below the sealing sleeve, wherein a sealing seat is arranged on the support platform, and an infrared light sensor is installed inside the support platform; the present application can remove dust particles in the flue gas in a graded manner to ensure effective filtration, thereby avoiding interference of dust particles with infrared light, and can accurately measure the content of greenhouse gases.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon emission detection, and more specifically, to a terminal sampling device for carbon emission detection in a thermal power system. Background Art

[0002] The flue gas from coal-fired boilers in thermal power plants is the most important source of pollution in the power industry. The waste gas from coal-fired power plants mainly comes from the flue gas generated by boiler combustion, the exhaust gas from the intermediate ash storage of the pneumatic ash conveying system and the dust-containing waste gas generated by the coal yard, as well as the coal dust generated by the coal yard and raw coal crushing and coal transportation. Among them, the amount of flue gas generated by boiler combustion and the amount of pollutants it contains are far greater than other waste gases, which is the focus of pollution control. The pollutants in the flue gas generated by boiler combustion include fly ash, SO2, NOX, CO, etc. Therefore, it is particularly important to re-monitor the flue gas emitted by thermal power plants.

[0003] Infrared sensors are usually used to detect carbon emissions in flue gas. Infrared spectroscopy technology is used to detect greenhouse gases. The concentration of gases is determined by measuring their ability to absorb infrared light of a specific wavelength. In practical applications, flue gas needs to be collected and passed through infrared sensors for detection. There are also a large number of dust particles in the flue gas. When infrared light is irradiated on dust particles, it will scatter, thus affecting the optical path and signal strength of the sensor. Based on the above problems, we provide a terminal sampling device for carbon emission detection in thermal power systems. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a terminal sampling device for carbon emission detection in a thermal power system.

[0005] The present invention provides a thermal power system carbon emission detection terminal sampling device adopts the following technical solution:

[0006] A terminal sampling device for carbon emission detection of a thermal power system comprises: a detection box and a detection mechanism arranged on one side of the detection box, wherein a primary filtering mechanism and a secondary filtering mechanism are also arranged in the detection box;

[0007] The primary filtering mechanism includes a filter cartridge, and a filter disc is arranged inside the top of the filter cartridge to filter large dust particles in the flue gas;

[0008] The secondary filtering mechanism includes a filter box, in which positive electrode plates are arranged on both sides, and a number of negative electrode columns are arranged between the two positive electrode plates to remove fine dust particles in the flue gas;

[0009] The detection mechanism includes a sealing sleeve and a support platform arranged below the sealing sleeve, a sealing seat is arranged on the support platform, and an infrared light sensor is installed inside the support platform;

[0010] Among them, an air bleed pipe is connected to one side of the detection box, the inner end of the air bleed pipe is connected to the filter cartridge, the top end of the side of the filter cartridge is also connected to a transfer pipe, the other end of the transfer pipe is connected to the bottom of the filter box, and the top end of the side of the filter box is also connected to an air supply pipe, which is connected to the sealing sleeve;

[0011] The air duct is equipped with an external air pump for extracting smoke, the transfer pipe is equipped with a transfer air pump for conveying smoke to the filter box, and the air delivery pipe is equipped with a terminal air pump for conveying smoke to the sealing sleeve for easy detection.

[0012] Preferably, a wind wheel is also installed below the filter disc, and annular grooves are provided at positions of the filter disc corresponding to the wind wheel. A dust filter is installed in the annular groove in the filter disc, and blades are installed in the annular groove in the wind wheel. A rubber layer is provided on the top of the blade, and the top of the blade fits with the bottom of the dust filter. A driving motor is also installed on the top of the filter cartridge, and the output shaft of the driving motor passes through the filter disc and is connected to the wind wheel, and the filter disc and the output shaft of the driving motor are rotatably matched.

[0013] Preferably, two scraping rods are connected to the bottom of the wind wheel, the scraping rods are in contact with the side walls of the filter cartridge, and the bottoms of the two scraping rods are connected to the same support ring, in which a fan impeller is installed.

[0014] Preferably, an ash hopper is also installed at the bottom of the filter cartridge, and an ash outlet pipe is connected to the bottom of the ash hopper, the ash outlet pipe extends to the outside of the detection box, and a funnel-shaped baffle is also installed in the filter cartridge, the funnel-shaped baffle is arranged between the support ring and the ash hopper, and the inner end of the air duct extends to below the funnel-shaped baffle.

[0015] Preferably, the top of the positive electrode plate is also connected to a positive electrode insulating seat, the top of the negative electrode column is connected to a negative electrode insulating seat, and a positioning ring is also mounted on the negative electrode column. The multiple positioning rings are interconnected, and a cleaning ring is rotatably installed in the positioning ring. Bristles are provided on the inner wall of the cleaning ring. Several telescopic motors are also installed on the top of the filter box, and the output shafts of the telescopic motors pass through the negative electrode insulating seat and are connected to the positioning ring.

[0016] Preferably, a notch groove is formed on the side of the positioning ring, and a bevel rack is slidably arranged relative to the notch groove. A bevel gear is also mounted on the outer surface of the cleaning ring, and the bevel gear and the bevel rack are meshed with each other.

[0017] Preferably, the detection mechanism also includes a cylinder, a motor base supporting the cylinder is installed on the side of the detection box, a sealing box is installed on the output end of the cylinder, a sealing sleeve is connected to the bottom of the sealing box, and a light-transmitting glass is arranged between the sealing box and the sealing sleeve, and an infrared emitter is also installed in the sealing box.

[0018] Preferably, a plurality of reflective plates are installed in the sealing sleeve, and the plurality of reflective plates are arranged at a certain angle, and the infrared laser is reflected by the plurality of reflective plates and emitted vertically downward, and the end of the air supply pipe extends to above the reflective plate.

[0019] Preferably, an air pressure sensor is also installed in the sealing card seat, and the top of the infrared light sensor extends into the sealing card seat, a shield is also installed on the infrared light sensor, a light-proof protection box is arranged inside the shield, a light-transmitting sheet is installed on the top of the light-proof protection box, and a sensor chip is arranged in the light-proof protection box.

[0020] In summary, the present invention includes the following beneficial technical effects:

[0021] 1. The present application installs a primary filtering mechanism in the detection box. After the air duct passes the smoke into the filter cartridge, it will pass through the dust filter upward for filtration, and the arranged driving motor can drive the wind wheel to rotate. When the blades in the wind wheel rotate, they can drive the smoke to rotate through the dust filter, and can scrape off the large particles of dust adhered to the bottom of the dust filter, thereby realizing self-cleaning, which is more convenient.

[0022] 2. The present application also installs a secondary filtering structure in the detection box. After the transfer tube passes the flue gas into the filter box, a high-voltage electric field is generated between the positive electrode plate and the negative electrode column in the filter box, which ionizes the gas molecules and generates positive and negative ions. These ions move under the action of the electric field and collide with dust particles, making the dust particles charged. Under the action of the electric field force, the charged dust particles will move to the opposite electrode and adhere to the electrode, thereby achieving dust removal.

[0023] 3. The present application also installs multiple reflective plates in the sealing sleeve, and the multiple reflective plates can reflect the infrared laser and emit the infrared laser vertically downward. Through the combination of multiple reflective plates, the path of the infrared laser can be extended. At this time, the greenhouse gas in the flue gas can absorb infrared light of a specific wavelength. The emitted infrared laser can be detected by the infrared light sensor, thereby measuring the content of greenhouse gases in the flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the overall appearance of the present invention;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the detection box of the present invention;

[0026] Figure 3 It is a cross-sectional schematic diagram of the internal structure of the detection box of the present invention;

[0027] Figure 4 It is a schematic elevation view of the internal structure of the detection box of the present invention;

[0028] Figure 5It is a disassembled schematic diagram of the internal structure of the filter cartridge of the present invention;

[0029] Figure 6 is a schematic diagram of the negative electrode column structure of the present invention;

[0030] Figure 7 It is a schematic elevation view of the detection mechanism of the present invention;

[0031] Figure 8 1 is a schematic diagram of the disassembly of the infrared light sensor of the present invention;

[0032] Fig. 9 The present invention Figure 6 Schematic diagram of the structure of part A.

[0033] Description of reference numerals: 1. detection box; 11. primary filtering mechanism; 1101. filter cartridge; 1102. filter disc; 1103. wind wheel; 1104. dust filter; 1105. blade; 1107. drive motor; 1108. scraper rod; 1109. support ring; 1110. fan impeller; 1111. funnel-shaped baffle; 1112. ash hopper; 1113. ash outlet pipe; 12. secondary filtering mechanism; 1201. filter box; 1202. positive electrode plate; 1203. negative electrode column; 1204. positive electrode insulating seat; 1205. negative electrode insulating seat; 1206. telescopic motor; 1207 , positioning ring; 1208, cleaning ring; 1209, bevel gear; 1210, notch groove; 1211, bevel rack; 13, air duct; 1301, external air pump; 14, transfer tube; 1401, transfer air pump; 15, air delivery pipe; 1501, terminal air pump; 2, detection mechanism; 21, motor base; 22, cylinder; 23, sealing sleeve; 231, reflector; 24, support table; 25, sealing card seat; 251, air pressure sensor; 26, infrared light sensor; 261, shield; 262, light-proof protection box; 263, light-transmitting sheet; 27, sealing box; 271, infrared emitter. DETAILED DESCRIPTION

[0034] The following is combined with Figures 1 to 9 The present invention is described in further detail.

[0035] It should be noted that the drawings are schematic and not to scale. For the sake of clarity and convenience, the relative sizes and proportions of the parts shown in the drawings are exaggerated or reduced in size, and any size is only illustrative and not restrictive. In addition, the same reference symbol is used for the same structure, element or accessory appearing in more than two figures to reflect similar features.

[0036] Embodiment 1

[0037] The present invention discloses a terminal sampling device for carbon emission detection in a thermal power system. Figure 3 , 4 5. A terminal sampling device for carbon emission detection of a thermal power system, comprising a detection box 1 and a detection mechanism 2 arranged on one side of the detection box 1, a primary filtering mechanism 11 is arranged in the detection box 1, the primary filtering mechanism 11 comprises a filter cartridge 1101, a filter disc 1102 is arranged inside the top of the filter cartridge 1101, and is used to filter large particles of dust in the flue gas, an air bleed pipe 13 is connected to one side of the detection box 1, the inner end of the air bleed pipe 13 is docked on the filter cartridge 1101, an external air pump 1301 is installed on the air bleed pipe 13, and is used to extract flue gas, and a wind wheel 1103 is also installed below the filter disc 1102, and an annular groove is opened at the position corresponding to the filter disc 1102 and the wind wheel 1103, and a dust removal filter 1 is installed in the annular groove of the filter disc 1102 104, a blade 1105 is installed in the annular groove in the wind wheel 1103, a rubber layer is provided on the top of the blade 1105, and the top of the blade 1105 is in contact with the bottom of the dust filter 1104, a driving motor 1107 is also installed on the top of the filter cartridge 1101, the output shaft of the driving motor 1107 passes through the filter disc 1102 and is connected to the wind wheel 1103, and the filter disc 1102 and the output shaft of the driving motor 1107 are rotatably matched, and two scraping rods 1108 are connected to the bottom of the wind wheel 1103, the scraping rods 1108 are in contact with the side wall of the filter cartridge 1101, and the bottoms of the two scraping rods 1108 are also connected to the same support ring 1109, and the fan impeller 1110 is installed in the support ring 1109. Specifically The air duct 13 can pass the smoke into the filter cartridge 1101, and with the cooperation of the driving motor 1107, it can also drive the wind wheel 1103 to rotate. At this time, the scraper rod 1108 connected to the wind wheel 1103 can also drive the support ring 1109 to rotate. The fan impeller 1110 is installed in the support ring 1109. The smoke is pushed by the fan impeller 1110 to rotate and rise. When the wind wheel 1103 rotates, the blades 1105 in the wind wheel 1103 also rotate. In addition, the rotation direction of the blades 1105 is opposite to that of the fan impeller 1110. When the smoke rises and contacts the blades 1105, the direction will be disturbed and tend to rotate in the horizontal direction. At this time, the smoke can slowly pass through the dust removal filter 1104 to filter out the large particles in the smoke. Particulate dust. In addition, a rubber layer is provided on the top surface of the blade 1105, which can scrape off the dust adhered to the bottom of the dust filter 1104 to achieve self-cleaning. Furthermore, in order to facilitate the discharge of dust, an ash hopper 1112 is also installed at the bottom of the filter cartridge 1101, and an ash outlet pipe 1113 is connected to the bottom of the ash hopper 1112, and the ash outlet pipe 1113 extends to the outside of the detection box 1, and a funnel-shaped baffle 1111 is also installed in the filter cartridge 1101. The funnel-shaped baffle 1111 is arranged between the support ring 1109 and the ash hopper 1112, and the inner end of the air duct 13 extends to the bottom of the funnel-shaped baffle 1111. The dust scraped off by the blade 1105 will fall into the ash hopper 1112 and finally be discharged outward through the ash outlet pipe 1113.

[0038] Embodiment 2

[0039] Reference Figure 2 , 3 6. A secondary filtering mechanism 12 is also provided in the detection box 1. The secondary filtering mechanism 12 includes a filter box 1201. Positive electrode plates 1202 are provided on both sides of the filter box 1201. A plurality of negative electrode columns 1203 are provided between the two positive electrode plates 1202 to remove fine dust particles in the flue gas. A positive electrode insulating seat 1204 is connected to the top of the positive electrode plate 1202, and a negative electrode insulating seat 1205 is connected to the top of the negative electrode column 1203. Specifically, a switching element 1204 is connected to the top of the filter cartridge 1101. Tube 14, the other end of the transfer tube 14 is connected to the bottom of the filter box 1201, and a transfer air pump 1401 is installed on the transfer tube 14 for transporting the flue gas to the filter box 1201. The flue gas preliminarily filtered by the filter cartridge 1101 can be passed into the filter box 1201 with the cooperation of the transfer tube 14. A high-voltage electric field will be generated between the positive electrode plate 1202 and the negative electrode column 1203 in the filter box 1201, so that the gas molecules are ionized to generate positive and negative ions. These ions move under the action of the electric field and collide with dust particles, making the dust particles charged. Under the action of the electric field force, the charged dust particles will move to the opposite electrode and adhere to the electrode, thereby achieving dust removal. In order to clean the dust from the negative electrode column 1203, a positioning ring 1207 is also mounted on the negative electrode column 1203. Multiple positioning rings 1207 are interconnected, and a cleaning ring 1208 is rotatably installed in the positioning ring 1207. Brushes are arranged on the inner wall of the cleaning ring 1208. A plurality of telescopic motors 1206 are also installed on the top of the filter box 1201. The output shaft of the telescopic motor 1206 passes through the negative electrode insulating seat 1205 and is connected to the positioning ring 1207. The positioning ring 1207 A notch groove 1210 is also provided on the side, and a bevel rack 1211 is slidably arranged relative to the notch groove 1210. A bevel gear 1209 is also provided on the outer surface of the cleaning ring 1208. The bevel gear 1209 and the bevel rack 1211 are meshed with each other. When the telescopic motor 1206 pushes the positioning ring 1207 to slide downward, the bevel gear 1209 provided on the surface of the cleaning ring 1208 will be meshed with the bevel rack 1211 and can keep rotating during the sliding process, so that the bristles on the inner wall of the cleaning ring 1208 can rotate around the negative electrode column 1203, so as to clean up the dust adsorbed on the surface of the negative electrode column 1203, which is more convenient.

[0040] Embodiment 3

[0041] Reference Figure 4 and Figure 5The detection mechanism 2 includes a sealing sleeve 23 and a support platform 24 arranged below the sealing sleeve 23. The top of the filter box 1201 is also connected to an air supply pipe 15, which is docked on the sealing sleeve 23. A terminal air pump 1501 is installed on the air supply pipe 15 to transport the smoke into the sealing sleeve 23 for easy detection. A sealing card seat 25 is arranged on the support platform 24, and an infrared light sensor 26 is installed inside the support platform 24. The detection mechanism 2 also includes a cylinder 22. The side of the detection box 1 A motor base 21 is installed to support the cylinder 22, a sealing box 27 is installed on the output end of the cylinder 22, a sealing sleeve 23 is connected to the bottom of the sealing box 27, and a light-transmitting glass is arranged between the sealing box 27 and the sealing sleeve 23, an infrared emitter 271 is also installed in the sealing box 27, and a plurality of reflectors 231 are also installed in the sealing sleeve 23, and the plurality of reflectors 231 are arranged at a certain angle, and the infrared laser is reflected by the plurality of reflectors 231 and emitted vertically downward, and the end of the air supply pipe 15 extends To the top of the reflector 231, an air pressure sensor 251 is also installed in the sealing card seat 25, and the top of the infrared light sensor 26 extends into the sealing card seat 25, and a shield 261 is also installed on the infrared light sensor 26, and a light-shielding protection box 262 is arranged inside the shield 261, and a light-transmitting sheet 263 is installed on the top of the light-shielding protection box 262, and a sensor chip is arranged in the light-shielding protection box 262. Specifically, during detection, the air supply pipe 15 will pass the treated flue gas into the sealing sleeve 23, With the cooperation of the cylinder 22, the sealing sleeve 23 can be pushed to clamp in the sealing seat 25 to maintain the sealing state. After the flue gas enters the sealing sleeve 23, the infrared emitter 271 is started. In addition, the multiple reflectors 231 in the sealing sleeve 23 can reflect the infrared laser multiple times to extend the path of the infrared laser. At this time, the greenhouse gas in the flue gas can absorb infrared light of a specific wavelength. The emitted infrared laser can be detected by the infrared light sensor 26, thereby measuring the content of greenhouse gases in the flue gas.

[0042] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0043] The implementation principle of the terminal sampling device for carbon emission detection of a thermal power system in an embodiment of the present invention is as follows: when in use, the flue gas discharged from the thermal power plant is collected and passed into the air duct 13, and with the cooperation of the external air pump 1301, the flue gas can be passed into the filter cartridge 1101, and with the cooperation of the driving motor 1107, the wind wheel 1103 can be driven to rotate, and through the cooperation of the two scraper rods 1108, the support ring 1109 can be driven to rotate, and the fan impeller 1110 in the support ring 1109 can promote the flue gas to spiral up when rotating. In addition, when the scraper rod 1108 is continuously rotating, the inner wall of the filter cartridge 1101 can also be moved. Dust is scraped off. The rotation direction of the blades 1105 in the wind wheel 1103 is set opposite to the rotation direction of the fan impeller 1110. When the smoke contacts the blades 1105, the rotation direction will be broken up and the smoke rotation direction will be horizontal. At this time, the smoke will slowly pass through the dust filter 1104 to filter out large particles of dust in the smoke. In addition, the top surface of the blades 1105 is also provided with a rubber layer, which can scrape off the dust adhered to the bottom of the dust filter 1104 to achieve self-cleaning. The dust scraped off by the blades 1105 will fall into the ash hopper 1112 and finally be discharged outward through the ash outlet pipe 1113.

[0044] Afterwards, with the cooperation of the transfer air pump 1401 and the transfer tube 14, the smoke filtered by the filter cartridge 1101 can be passed into the filter box 1201. A high-voltage electric field will be generated between the positive electrode plate 1202 and the negative electrode column 1203 in the filter box 1201, so that the gas molecules are ionized and positive and negative ions are generated. These ions move under the action of the electric field and collide with dust particles, making the dust particles charged. Under the action of the electric field force, the charged dust particles will move to the opposite electrode and adhere to the electrode, thereby achieving dust removal. In order to clean the dust from the negative electrode column 1203, when the telescopic motor 1206 pushes the positioning ring 1207 to slide downward, the bevel gear 1209 mounted on the surface of the cleaning ring 1208 will mesh with the bevel rack 1211, and can keep rotating during the sliding process, so that the bristles on the inner wall of the cleaning ring 1208 can rotate around the negative electrode column 1203, and the dust adsorbed on the surface of the negative electrode column 1203 can be cleaned, which is more convenient.

[0045] Finally, with the cooperation of the terminal air pump 1501 and the air supply pipe 15, the flue gas processed by the detection box 1 can be passed into the detection mechanism 2. During the detection, with the cooperation of the cylinder 22, the sealing sleeve 23 can be pushed to clamp in the sealing seat 25 to maintain the sealing state. After the flue gas passes into the sealing sleeve 23, the infrared transmitter 271 is started. In addition, the multiple reflectors 231 in the sealing sleeve 23 can reflect the infrared laser multiple times to extend the path of the infrared laser. At this time, the greenhouse gas in the flue gas can absorb infrared light of a specific wavelength, and the emitted infrared laser can be detected by the infrared light sensor 26, thereby measuring the content of greenhouse gases in the flue gas.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A terminal sampling device for carbon emission detection in a thermal power system, characterized in that: include: A detection box (1) and a detection mechanism (2) arranged on one side of the detection box (1); a primary filtering mechanism (11) and a secondary filtering mechanism (12) are also arranged in the detection box (1); The primary filtering mechanism (11) comprises a filter cartridge (1101), a filter disc (1102) is arranged inside the top end of the filter cartridge (1101) for filtering large dust particles in the smoke, a wind wheel (1103) is also installed below the filter disc (1102), and two scraping rods (1108) are connected to the bottom of the wind wheel (1103), the scraping rods (1108) are in contact with the side wall of the filter cartridge (1101), and the bottoms of the two scraping rods (1108) are also connected to the same support ring (1109), and a fan impeller (1110) is installed in the support ring (1109), and the filter disc (1102) and the wind wheel (1103) are connected to each other. Annular grooves are provided at corresponding positions, a dust filter (1104) is installed in the annular groove of the filter disc (1102), a blade (1105) is installed in the annular groove of the wind wheel (1103), a rubber layer is provided at the top of the blade (1105), and the top of the blade (1105) is in contact with the bottom of the dust filter (1104), and a driving motor (1107) is also installed on the top of the filter cartridge (1101), the output shaft of the driving motor (1107) passes through the filter disc (1102) and is connected to the wind wheel (1103), and the filter disc (1102) and the output shaft of the driving motor (1107) are rotationally matched; The secondary filtering mechanism (12) comprises a filter box (1201), wherein positive electrode plates (1202) are arranged on both the left and right sides of the filter box (1201), and a plurality of negative electrode columns (1203) are arranged between the two positive electrode plates (1202) for removing fine dust particles in the flue gas, wherein the top of the positive electrode plate (1202) is connected to a positive electrode insulating seat (1204), and the top of the negative electrode column (1203) is connected to a negative electrode insulating seat (1205), and a positioning ring (1207) is also mounted on the negative electrode column (1203), wherein the plurality of positioning rings (1207) are connected to each other, and a rotating shaft (1207) is arranged inside the positioning ring (1207). A cleaning ring (1208) is dynamically installed, and bristles are arranged on the inner wall of the cleaning ring (1208). A plurality of telescopic motors (1206) are also installed on the top of the filter box (1201). The output shaft of the telescopic motor (1206) passes through the negative electrode insulating seat (1205) and is connected to the positioning ring (1207). A notch groove (1210) is also opened on the side of the positioning ring (1207), and a bevel rack (1211) is slidably arranged relative to the notch groove (1210). A bevel gear (1209) is also sleeved on the outer surface of the cleaning ring (1208), and the bevel gear (1209) and the bevel rack (1211) are meshed with each other. The detection mechanism (2) comprises a sealing sleeve (23) and a support platform (24) arranged below the sealing sleeve (23), a sealing card seat (25) being arranged on the support platform (24), and an infrared light sensor (26) being installed inside the support platform (24). The detection mechanism (2) also comprises a cylinder (22), a motor seat (21) supporting the cylinder (22) being installed on the side of the detection box (1), a sealing box (27) being installed on the output end of the cylinder (22), the sealing sleeve (23) being connected to the bottom of the sealing box (27), and the sealing box (27) and the sealing A light-transmitting glass is arranged between the sealing sleeve (23); an infrared emitter (271) is also installed in the sealing box (27); an air pressure sensor (251) is also installed in the sealing card seat (25); the top end of the infrared light sensor (26) extends into the sealing card seat (25); a shield (261) is also installed on the infrared light sensor (26); a light-shielding protection box (262) is arranged inside the shield (261); a light-transmitting sheet (263) is installed on the top of the light-shielding protection box (262); and a sensor chip is arranged in the light-shielding protection box (262); One side of the detection box (1) is connected to an air duct (13), the inner end of the air duct (13) is butt-jointed to the filter cartridge (1101), the top end of the side of the filter cartridge (1101) is also connected to a transfer tube (14), the other end of the transfer tube (14) is connected to the bottom of the filter box (1201), and the top end of the side of the filter box (1201) is also connected to an air supply tube (15), which is butt-jointed to the sealing sleeve (23); The air duct (13) is equipped with an external air pump (1301) for extracting smoke, the transfer tube (14) is equipped with a transfer air pump (1401) for conveying smoke into the filter box (1201), and the air delivery tube (15) is equipped with a terminal air pump (1501) for conveying smoke into the sealing sleeve (23) for easy detection.

2. According to claim 1, a terminal sampling device for carbon emission detection of a thermal power system is characterized in that: An ash hopper (1112) is also installed at the bottom of the filter cartridge (1101), and an ash outlet pipe (1113) is connected to the bottom of the ash hopper (1112), the ash outlet pipe (1113) extends to the outside of the detection box (1), and a funnel-shaped baffle (1111) is also installed in the filter cartridge (1101), the funnel-shaped baffle (1111) is arranged between the support ring (1109) and the ash hopper (1112), and the inner end of the air duct (13) extends to below the funnel-shaped baffle (1111).

3. A terminal sampling device for carbon emission detection in a thermal power system according to claim 1, characterized in that: A plurality of reflective plates (231) are also installed in the sealing sleeve (23), and the plurality of reflective plates (231) are arranged at a certain angle. The infrared laser is reflected by the plurality of reflective plates (231) and emitted vertically downward, and the end of the air supply pipe (15) extends to above the reflective plate (231).

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