Intelligent flue gas distribution sampling device and sampling method

Abstract

This invention discloses an intelligent flue gas distribution and sampling device and method, comprising: a sampling component including a sampling gun, a cleaning component, a sampling mechanism, and a flue gas analyzer; the sampling mechanism including a reference frame and two sampling tubes disposed inside the reference frame; positioning holes are provided at the top and bottom of the reference frame, and positioning cylinders are fixedly installed in the positioning holes; a connecting sleeve is slidably sleeved on the outside of the positioning cylinders; a centering component is installed inside the reference frame to move the two positioning cylinders in a centered manner; the output end of the sampling gun is connected to the positioning cylinder at the bottom position, and a solenoid valve is installed on the positioning cylinder at the bottom position; the delivery end of the flue gas analyzer is connected to the positioning cylinder at the top position; a rotating component is installed inside the reference frame to displace the sampling tubes; the sampling tubes with both ends aligned with the two connecting sleeves are in the working position; and the cleaning component is disposed on the reference frame. This invention can achieve automatic cleaning while ensuring the sampling tubes are clean, thus improving sampling accuracy.

Description

Technical Field

[0001] This invention relates to the field of flue gas sampling technology, and in particular to an intelligent flue gas distribution and sampling device and sampling method. Background Technology

[0002] Boilers and gas turbines produce large amounts of high-temperature flue gas, which contains dust, SO2, and NO. x For the specific measurement of the components in flue gas, such as N2, CO2, SO3, CO, and other gases, it is necessary to sample and analyze the flue gas. Since flue ducts are generally large, if only one measurement location is selected, the result will deviate significantly from the actual value. The current method is to divide the cross-section into grids and sample and measure at multiple points. The measurement results have high accuracy. However, multi-point sampling greatly increases the workload of the testing personnel and the sampling time, and it is difficult to synchronize the sampling time.

[0003] In the prior art, for example, Chinese invention publication CN208588590U relates to a device for detecting the composition of flue gas at the outlet of a boiler and gas turbine, and particularly to an intelligent flue gas distribution and sampling device. This invention includes a distributor, a sampling pipe connection port, an electromagnetic actuator, two connection ports, and a sampling channel. The sampling channel is installed on the side of the distributor, the electromagnetic actuator is installed on the top surface of the distributor, the sampling pipe connection port is located at one end of the sampling channel, the lower part of the electromagnetic actuator is connected to the other end of the sampling channel, and the two connection ports are respectively installed at both ends of the distributor. The electromagnetic actuator includes a coil, a spring, an actuator, a movable core, and a sealing ring. The actuator is connected to the other end of the sampling channel, the coil is fitted onto the actuator, the spring and the movable core are both installed inside the actuator, with the spring fitted onto the movable core, and the sealing ring is installed at the end of the actuator.

[0004] In this technical solution, the flue gas inside the furnace is quite complex. The flue gas often contains a large amount of dust and water vapor, and the flue gas also has a certain temperature. After the sampling tube has completed the timed sampling, it is in a closed state. The flue gas inside the sampling tube condenses when it gets cold and then cokes with the dust, causing the sampling tube to be blocked and causing errors in the next sampling. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent flue gas distribution and sampling device and sampling method to solve the technical problem that the flue gas in the furnace is relatively complex, often containing a large amount of dust and water vapor, and has a certain temperature. After the sampling tube is completed at a certain time, it is in a closed state. The flue gas in the sampling tube condenses when it encounters cold and then cokes with the dust, causing blockage of the sampling tube and causing errors in the next sampling.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A smart flue gas distribution and sampling device, comprising: Multiple sampling components, the sampling components including a sampling gun, a cleaning component, a sampling mechanism, and a flue gas analyzer; The sampling mechanism includes a reference frame and two sampling tubes disposed inside the reference frame. The reference frame has positioning holes at the top and bottom, and positioning cylinders are fixedly installed in the positioning holes. A connecting sleeve is slidably sleeved on the outside of the positioning cylinder. A centering component is installed inside the reference frame to move the two positioning cylinders in a centered manner. The output end of the sampling gun is connected to the positioning cylinder at the bottom position, and a solenoid valve is installed on the positioning cylinder at the bottom position. The delivery end of the flue gas analyzer is connected to the positioning cylinder at the top position. A rotating component is installed inside the reference frame to replace the sampling tubes. The sampling tubes with their two ends aligned with the two connecting sleeves are in the working position. A cleaning component is disposed on the reference frame and is used to clean the sampling tubes in the non-working position. Intelligent actuators that control various mechanisms, components, and electrical elements.

[0007] A further improvement of the present invention is that the rotating assembly includes a reference circular plate and a fixing ring. The fixing ring is fixed in the reference frame. The outer wall of the reference circular plate is rotatably mounted in the fixing ring through a bearing. Both sampling tubes are fixed on the reference circular plate.

[0008] A further improvement of the present invention is that the rotating assembly further includes a servo motor, a gear plate, a transmission gear, a transmission circular plate, a threaded rod, and multiple guide rods. Both sampling tubes are fixed on the transmission circular plate. Two first rotating holes are provided on the reference frame. The two ends of the threaded rod are respectively rotatably installed in the first rotating holes. The housing of the servo motor is fixed on the reference frame. The output shaft of the servo motor is coaxially fixed with the threaded rod. Both ends of the guide rod are fixed on the reference frame. The gear plate is slidably sleeved on each guide rod, and the gear plate and the threaded rod form a screw connection. The transmission gear is coaxially fixed with the transmission circular plate, so that the transmission gear meshes with the gear plate.

[0009] A further improvement of the present invention is that the cleaning assembly includes a fixed frame, an electric telescopic rod, an electric motor, and a steel brush. The fixed frame is fixed to the reference frame, the electric telescopic rod is fixed to the fixed frame, the telescopic end of the electric telescopic rod is coaxially fixed to the electric motor, the steel brush is installed on the output end of the motor, and the electric motor is coaxially arranged with the sampling tube at the non-working position.

[0010] A further improvement of the present invention is that the centering mechanism includes a rotating column, a power plate, a driven plate, an electric push rod, and two movable plates. The outer side wall of the movable plate is provided with multiple sliding holes, and a guide column is slidably disposed in the sliding holes. Both ends of the guide column are fixed to the reference frame. The outer wall of the reference frame is provided with a second rotating hole, and the outer side of the rotating column is rotatably installed in the second rotating hole. Both ends of the rotating column are respectively fixed to the power plate and the driven plate. Both ends of the driven plate are rotatably installed with a connecting rod together with the two movable plates. The connecting sleeve is fixed to the movable plate. Both ends of the electric push rod are rotatably installed on the reference and one end of the power plate, respectively.

[0011] A further improvement of the present invention is that a vibration component is provided inside the reference frame.

[0012] A further improvement of the present invention is that the vibration assembly includes a ratchet, a solid ball, and a return spring. The ratchet is coaxially fixed with the reference circular plate, and the two ends of the return spring are respectively fixed on the solid ball and the reference frame. The solid ball is located in the ratchet groove of the ratchet under the action of the spring.

[0013] A further improvement of the present invention is that an auxiliary positioning mechanism is provided inside the reference frame. The auxiliary positioning mechanism includes a double-section telescopic cylinder, an auxiliary circular plate, a limiting plate, a tightening spring, and a positioning rod. One end of the double-section telescopic cylinder is fixed to the reference frame, and the other end of the double-section telescopic cylinder is fixed to the limiting plate. The tightening spring is sleeved on the double-section telescopic cylinder. The sampling tube is fixed to the auxiliary circular plate, and the positioning rod is fixed to the limiting plate. One end of the positioning rod is a dome, and two symmetrical shallow spherical grooves are opened on the outer side of the auxiliary circular plate.

[0014] A further improvement of the present invention is that the intelligent execution component includes a PLC controller, a display screen and a control panel, and the intelligent execution component is independently installed outside each sampling component.

[0015] A sampling method for an intelligent flue gas distribution and sampling device includes the following steps: The first step is to arrange sampling positions in the flue gas flow section according to the grid method, install the flue gas with the sampling gun, sample the flue gas, and then put the sampled flue gas into the sampling component according to the grid order to measure the flue gas composition at each sampling position. The second step is to use intelligent control to allocate sampling time and sampling location at each point by operating the intelligent execution component, and record and store the sampling time and sampling location for data processing. Step 3: The intelligent actuator controls the start and stop of each electromagnetic actuator and the start and stop time. The sampling components that are not in use are cleaned for the next use.

[0016] Compared with the prior art, the present invention has at least the following beneficial technical effects: This invention utilizes a rotating component and a cleaning component. During cleaning, the cleaning component cleans the sampling tube in the non-working position. After cleaning is complete, the solenoid valve closes when the sampling tube in the working position has finished its work. The centering component disengages the two positioning cylinders from the sampling tube in the working position, the rotating component replaces the two sampling tubes, and then the centering component inserts the two positioning cylinders into the cleaned sampling tube. This achieves automatic cleaning while ensuring the sampling tube is clean and improving sampling accuracy.

[0017] This invention utilizes a vibration assembly where a ratchet rotates with a reference circular plate. The ratchet continuously pushes a solid ball, which is then reset by a return spring, causing it to strike the ratchet repeatedly. This strike generates vibration in the ratchet, which is transmitted to the sampling tube, causing it to vibrate and shake off any condensed dust inside. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the sampling component of the present invention; Figure 2 This is a front view structural diagram of the sampling component of the present invention; Figure 3 yes Figure 2 A schematic diagram of the AA cross-sectional structure; Figure 4 yes Figure 2 Schematic diagram of the BB cross-section structure; Figure 5 yes Figure 2 Schematic diagram of CC cross-section structure; Figure 6 This is a partial side sectional view of the present invention. Figure 7 This is a three-dimensional structural diagram of the cleaning component of the present invention.

[0020] Figure label: 1. Sampling gun; 2. Base frame; 3. Conveying end of flue gas analyzer; 4. Cleaning assembly; 5. Power plate; 6. Electric push rod; 7. Moving plate; 8. Connecting rod; 9. Rotating assembly; 10. Sampling tube; 11. Vibration assembly; 12. Auxiliary positioning mechanism; 13. Guide column; 14. Transmission circular plate; 15. Driven plate; 16. Transmission gear; 17. Solenoid valve; 18. Servo motor; 19. Guide rod; 20. Threaded rod; 21. Toothed plate; 22. Ratchet; 23. Solid ball; 24. Return spring; 25. Fixing ring; 26. Auxiliary circular plate; 27. Tightening spring; 28. Double-section telescopic cylinder; 29. ​​Limiting plate; 30. Positioning rod; 31. Connecting sleeve; 32. Steel brush; 33. Positioning cylinder; 34. Fixing frame; 35. Electric telescopic rod; 36. Electric motor. Detailed Implementation

[0021] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0022] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] It should be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0027] It should also be understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0028] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0029] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0030] Example 1 like Figures 1 to 7 As shown, this embodiment of the invention provides an intelligent flue gas distribution and sampling device, comprising: Multiple sampling components, including a sampling gun 1, a cleaning component 4, a sampling mechanism, and a flue gas analyzer; The sampling mechanism includes a reference frame 2 and two sampling tubes 10 disposed inside the reference frame 2. Positioning holes are provided at the top and bottom of the reference frame 2, and positioning cylinders 33 are fixedly installed inside the positioning holes. A connecting sleeve is slidably fitted on the outer side of the positioning cylinders 33. An alignment component is installed inside the reference frame 2 to move the two positioning cylinders 33 in a centered manner. The output end of the sampling gun 1 is connected to the positioning cylinder 33 at the bottom position, and a solenoid valve 17 is installed on the positioning cylinder 33 at the bottom position. The conveying end 3 of the flue gas analyzer is connected to the positioning cylinder 33 at the top position. A rotating component 9 is installed inside the reference frame 2 to replace the sampling tubes 10. The sampling tubes 10, with their ends aligned with the two connecting sleeves 31 respectively, are in their working position. A cleaning component 4 is disposed on the reference frame 2. Component 4 is used to clean the sampling tube 10 in the non-working position. When the entire sampling assembly is working, the solenoid valve 17 is opened, and the sampling gun 1 introduces the flue gas into the sampling tube 10 in the working position. The flue gas flows into the flue gas analyzer through the sampling tube 10 and is analyzed by the flue gas analyzer. During cleaning, the cleaning component 4 cleans the sampling tube 10 in the non-working position. After cleaning is completed, the sampling tube 10 in the working position has finished its work. The solenoid valve 17 is closed, the centering component causes the two positioning cylinders 33 to disengage from the sampling tube 10 in the working position, the rotating component 9 causes the two sampling tubes 10 to be replaced, and then the centering component causes the two positioning cylinders 33 to be inserted into the sampling tube 10 after cleaning. This can achieve automatic cleaning while ensuring that the sampling tube 10 is clean and improving sampling accuracy. Intelligent actuators that control various mechanisms, components, and electrical elements.

[0031] Preferably, the rotating assembly 9 includes a reference circular plate and a fixing ring 25. The fixing ring 25 is fixed inside the reference frame 2. The outer wall of the reference circular plate is rotatably mounted inside the fixing ring 25 through a bearing. Both sampling tubes 10 are fixed on the reference circular plate. Thus, the reference circular plate rotates axially inside the fixing ring 25, thereby rotating the two sampling tubes 10.

[0032] Preferably, the rotating assembly 9 further includes a servo motor 18, a gear plate 21, a transmission gear 16, a transmission circular plate 14, a threaded rod 20, and multiple guide rods 19. Both sampling tubes 10 are fixed to the transmission circular plate 14. The reference frame 2 has two first rotating holes. The two ends of the threaded rod 20 are rotatably installed in the first rotating holes. The housing of the servo motor 18 is fixed to the reference frame 2. The output shaft of the servo motor 18 is coaxially fixed to the threaded rod 20. Both ends of the guide rods 19 are fixed to the reference frame 2. The gear plate 21 is slidably sleeved on each guide rod 19, and the gear plate 21 and the threaded rod 20 form a screw connection. The transmission gear 16 is coaxially fixed to the transmission circular plate 14, so that the transmission gear 16 meshes with the gear plate 21. The servo motor 18 drives the threaded rod 20 to rotate axially through the output shaft. The threaded rod 20 drives the gear plate 21 to move along the guide rod 19 through the thread. The gear plate 21 drives the transmission gear 16 to rotate. The transmission gear 16 replaces the two sampling tubes 10 through the transmission circular plate 14.

[0033] Preferably, the cleaning component 4 includes a fixed frame 34, an electric telescopic rod 35, an electric motor 36, and a steel brush 32. The fixed frame 34 is fixed to the reference frame 2, and the electric telescopic rod 35 is fixed to the fixed frame 34. The telescopic end of the electric telescopic rod 35 is coaxially fixed to the electric motor 36. The steel brush 32 is installed on the output end of the motor. The electric motor 36 is coaxially arranged with the sampling tube 10 at the non-working position. The electric telescopic rod 35 extends the electric motor 36 into the sampling tube 10 at the non-working position. The electric motor 36 causes the steel brush 32 to rotate at high speed, and the steel brush 32 cleans the inside of the sampling tube 10.

[0034] Preferably, the centering mechanism includes a rotating column, a power plate 5, a driven plate 15, an electric push rod 6, and two movable plates 7. Multiple sliding holes are provided on the outer wall of the movable plate 7, and guide columns 13 are slidably disposed within these holes. Both ends of the guide columns 13 are fixed to the reference frame 2. A second rotating hole is provided on the outer wall of the reference frame 2, and the outer side of the rotating column is rotatably installed within this second rotating hole. Both ends of the rotating column are fixed to the power plate 5 and the driven plate 15, respectively. A connecting rod 8 is rotatably mounted on both ends of the driven plate 15 and the two movable plates 7. A connecting sleeve 31 is fixed to the movable plate 7. Both ends of the electric push rod 6 are rotatably mounted on the reference and one end of the power plate 5, respectively. The electric push rod 6, through extension and retraction, causes the power plate 5 to rotate. The power plate 5, through the rotating column, causes the driven plate 15 to rotate. The driven plate 15, through the two connecting rods 8, causes the two movable plates 7 to move along the guide column 13, thereby enabling the two movable plates 7 to move synchronously and in opposite directions in a straight line.

[0035] Preferably, the reference frame 2 is provided with a vibration assembly 11, which includes a ratchet 22, a solid ball 23, and a return spring 24. The ratchet 22 is fixed coaxially with the reference circular plate. The two ends of the return spring 24 are fixed to the solid ball 23 and the reference frame 2, respectively. The solid ball 23 is located in the ratchet groove of the ratchet 22 under the action of the spring. The ratchet 22 rotates with the reference circular plate. The ratchet 22 continuously pushes the solid ball 23. The solid ball 23 is continuously reset by the return spring 24, thereby continuously hitting the ratchet 22. The ratchet 22 vibrates when it is hit. The vibration is transmitted to the sampling tube 10, causing the sampling tube 10 to vibrate. The cleaned sampling tube 10 vibrates, shaking off the condensed dust inside the sampling tube 10.

[0036] Preferably, the reference frame 2 is provided with an auxiliary positioning mechanism 12. The auxiliary positioning mechanism 12 includes a double-section telescopic cylinder 28, an auxiliary circular plate 26, a limiting plate 29, a tightening spring 27, and a positioning rod 30. One end of the double-section telescopic cylinder 28 is fixed to the reference frame 2, and the other end of the double-section telescopic cylinder 28 is fixed to the limiting plate 29. The tightening spring 27 is sleeved on the double-section telescopic cylinder 28. The sampling tube 10 is fixed to the auxiliary circular plate 26, and the positioning rod 30 is fixed to the limiting plate 29. One end of the positioning rod 30 is dome-shaped. Two symmetrical shallow ball grooves are opened on the outer side of the auxiliary circular plate 26. Since there is a gap between the toothed plate 21 and the transmission gear 16, the double-section telescopic cylinder 28 inserts the positioning rod 30 on the limiting plate 29 into the shallow ball groove through the top spring. The auxiliary circular plate 26 is adjusted so that the sampling tube at the working position on the auxiliary circular plate 26 can be aligned with the connecting sleeve 31.

[0037] Preferably, the intelligent execution component includes a PLC controller, a display screen, and a control panel, and the intelligent execution component is independently installed outside each sampling component.

[0038] Example 2 This invention provides an intelligent flue gas distribution and sampling method, comprising the following steps: The first step is to arrange sampling positions in the flue gas flow section according to the grid method, install the flue gas through the sampling gun 1, and sample the flue gas. The sampled flue gas is then introduced into the sampling assembly according to the grid order to measure the flue gas composition at each sampling position. When the sampling assembly is working, the solenoid valve 17 is opened, and the sampling gun 1 introduces the flue gas into the sampling tube 10 at the working position. The flue gas flows into the flue gas analyzer through the sampling tube 10 and is analyzed by the flue gas analyzer. Step 2: Using intelligent control, the PLC controller is operated through the control panel. The PLC controller allocates the sampling time and sampling location for each point, records and stores the sampling time and sampling location, and performs data processing. Step 3: The intelligent execution component controls the start / stop and start / stop time of each electromagnetic actuator. The sampling components that are not in operation are cleaned for future use. During cleaning, the cleaning component 4 cleans the sampling tube 10 in the non-working position. Specifically, the electric telescopic rod 35 extends the electric motor 36 into the sampling tube 10 in the non-working position, causing the steel brush 32 to rotate at high speed and clean the inside of the sampling tube 10. After cleaning, once the sampling tube 10 in the working position has finished its work, the solenoid valve 17 closes. The centering component disengages the two positioning cylinders 33 from the sampling tube 10 in the working position. That is, the electric push rod 6, through telescopic movement, causes the power plate 5 to rotate. The power plate 5, through the rotating column, causes the driven plate 1... The driven plate 15 rotates, and the two moving plates 7 move along the guide post 13 via two connecting rods 8, so that the two moving plates 7 move synchronously and in opposite directions in a straight line. The rotating assembly 9 replaces the two sampling tubes 10, that is, the servo motor 18 drives the threaded rod 20 to rotate axially through the output shaft. The threaded rod 20 drives the toothed plate 21 to move along the guide rod 19 through the thread. The toothed plate 21 drives the transmission gear 16 to rotate. The transmission gear 16 replaces the two sampling tubes 10 through the transmission circular plate 14. Then the centering assembly inserts the two positioning cylinders 33 into the sampling tubes 10 after cleaning. This can achieve automatic cleaning and ensure that the sampling tubes 10 are clean, thus improving the sampling accuracy.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. An intelligent flue gas distribution and sampling device, characterized in that, include: Multiple sampling components, the sampling components including a sampling gun (1), a cleaning component (4), a sampling mechanism and a flue gas analyzer; The sampling mechanism includes a reference frame (2) and two sampling tubes (10) inside the reference frame (2). The reference frame (2) has positioning holes at the top and bottom, and a positioning cylinder (33) is fixedly installed in the positioning hole. The outer side of the positioning cylinder (33) is slidably fitted with a connecting sleeve. The reference frame (2) has a centering component installed inside to move the two positioning cylinders (33) in the center. The output end of the sampling gun (1) is connected to the positioning cylinder (33) at the bottom position, and a solenoid valve (17) is installed on the positioning cylinder (33) at the bottom position. The delivery end (3) of the flue gas analyzer is connected to the positioning cylinder (33) at the top position. The reference frame (2) has a rotating component (9) installed inside to replace the sampling tubes (10). The sampling tubes (10) with their two ends aligned with the two connecting sleeves (31) are in the working position. The cleaning component (4) is set on the reference frame (2) and is used to clean the sampling tubes (10) in the non-working position. Intelligent actuators that control various mechanisms, components, and electrical elements.

2. The intelligent flue gas distribution and sampling device according to claim 1, characterized in that, The rotating assembly (9) includes a reference circular plate and a fixing ring (25). The fixing ring (25) is fixed in the reference frame (2). The outer wall of the reference circular plate is rotatably installed in the fixing ring (25) through a bearing. Both sampling tubes (10) are fixed on the reference circular plate.

3. The intelligent flue gas distribution and sampling device according to claim 2, characterized in that, The rotating assembly (9) also includes a servo motor (18), a gear plate (21), a transmission gear (16), a transmission circular plate (14), a threaded rod (20), and multiple guide rods (19). Two sampling tubes (10) are fixed on the transmission circular plate (14). Two first rotating holes are opened on the reference frame (2). The two ends of the threaded rod (20) are respectively rotatably installed in the first rotating holes. The housing of the servo motor (18) is fixed on the reference frame (2). The output shaft of the servo motor (18) is coaxially fixed with the threaded rod (20). The two ends of the guide rod (19) are fixed on the reference frame (2). The entire gear plate (21) is slidably sleeved on each guide rod (19), and the gear plate (21) and the threaded rod (20) form a screw connection. The transmission gear (16) is coaxially fixed with the transmission circular plate (14), so that the transmission gear (16) meshes with the gear plate (21).

4. The intelligent flue gas distribution and sampling device according to claim 1, characterized in that, The cleaning component (4) includes a fixed frame (34), an electric telescopic rod (35), an electric motor (36), and a steel brush (32). The fixed frame (34) is fixed to the reference frame (2), the electric telescopic rod (35) is fixed to the fixed frame (34), the telescopic end of the electric telescopic rod (35) is coaxially fixed to the electric motor (36), the steel brush (32) is installed on the output end of the motor, and the electric motor (36) is coaxially arranged with the sampling tube (10) at the non-working position.

5. The intelligent flue gas distribution and sampling device according to claim 1, characterized in that, The centering mechanism includes a rotating column, a power plate (5), a driven plate (15), an electric push rod (6), and two moving plates (7). The outer side wall of the moving plate (7) is provided with multiple sliding holes, and a guide column (13) is slidably arranged in the sliding holes. Both ends of the guide column (13) are fixed on the reference frame (2). The outer wall of the reference frame (2) is provided with a second rotating hole. The outer side of the rotating column is rotatably installed in the second rotating hole. Both ends of the rotating column are fixed to the power plate (5) and the driven plate (15) respectively. Both ends of the driven plate (15) are rotatably installed with a connecting rod (8) together with the two moving plates (7). The connecting sleeve (31) is fixed to the moving plate (7). Both ends of the electric push rod (6) are rotatably installed on the reference and one end of the power plate (5) respectively.

6. The intelligent flue gas distribution and sampling device according to claim 1, characterized in that, The reference frame (2) is equipped with a vibration assembly (11).

7. The intelligent flue gas distribution and sampling device according to claim 6, characterized in that, The vibration assembly (11) includes a ratchet (22), a solid ball (23), and a return spring (24). The ratchet (22) is coaxially fixed with the reference circular plate. The two ends of the return spring (24) are fixed on the solid ball (23) and the reference frame (2), respectively. The solid ball (23) is located in the ratchet groove of the ratchet (22) under the action of the spring.

8. The intelligent flue gas distribution and sampling device according to claim 1, characterized in that, The reference frame (2) is equipped with an auxiliary positioning mechanism (12). The auxiliary positioning mechanism (12) includes a double-section telescopic cylinder (28), an auxiliary circular plate (26), a limiting plate (29), a tightening spring (27), and a positioning rod (30). One end of the double-section telescopic cylinder (28) is fixed on the reference frame (2), and the other end of the double-section telescopic cylinder (28) is fixed to the limiting plate (29). The tightening spring (27) is sleeved on the double-section telescopic cylinder (28). The sampling tube (10) is fixed to the auxiliary circular plate (26), and the positioning rod (30) is fixed to the limiting plate (29). One end of the positioning rod (30) is a dome, and two symmetrical shallow spherical grooves are opened on the outer side of the auxiliary circular plate (26).

9. The intelligent flue gas distribution and sampling device according to claim 1, characterized in that, The intelligent execution component includes a PLC controller, a display screen, and a control panel, and the intelligent execution component is independently installed outside each sampling component.

10. A sampling method for the intelligent flue gas distribution and sampling device as described in any one of claims 1-9, characterized in that: The sampling method includes the following steps: The first step is to arrange the sampling positions in the flue gas flow section according to the grid method, install the flue gas with the sampling gun (1), sample the flue gas, and put the sampled flue gas into the sampling component according to the grid order to measure the flue gas composition at each sampling position. The second step is to use intelligent control to allocate sampling time and sampling location at each point by operating the intelligent execution component, and record and store the sampling time and sampling location for data processing. Step 3: The intelligent actuator controls the start and stop of each electromagnetic actuator and the start and stop time. The sampling components that are not in use are cleaned for the next use.

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