A flue gas sampling device

Abstract

This utility model relates to the field of flue gas sampling technology, specifically to a flue gas sampling device, including a fixed housing. One side of the fixed housing is connected to one end of a delivery pipeline, and the other end of the delivery pipeline is connected to a sampling component. A set of adjustable mounting components are connected to opposite upper and lower surfaces of the fixed housing. Each set of adjustable mounting components includes an electric telescopic rod, one end of which is perpendicularly connected to the fixed housing, and the other end is connected to a mounting frame. A set of hydraulic telescopic rods are connected to the left and right sides of each mounting frame. The hydraulic telescopic rods and the sampling component are located on the same side of the fixed housing. A rotating component is connected to the end of each hydraulic telescopic rod furthest from the mounting frame. The rotating component includes a connecting shaft parallel to the hydraulic telescopic rod, and the end of the connecting shaft furthest from the hydraulic telescopic rod is perpendicularly connected to a clamping arm. This utility model improves the ease of installation and adaptability of the device, enhances installation stability, and ensures the accuracy and continuity of flue gas sampling.

Description

Technical Field

[0001] This utility model relates to the field of flue gas sampling technology, specifically to a flue gas sampling device. Background Technology

[0002] In today's increasingly stringent environmental protection environment, coal-fired power plants are key sources of air pollutant emissions. Therefore, accurate monitoring and effective control of their emissions of pollutants such as sulfur dioxide, nitrogen oxides, particulate matter, fugitive ammonia, mercury and its compounds, and non-methane hydrocarbons are crucial. Accurate flue gas monitoring data is a key basis for assessing power plant pollution emissions and for developing and optimizing pollution control measures.

[0003] To achieve more accurate flue gas data monitoring, sampling devices are typically installed on the outer wall of the flue. The probe of this device extends into the flue to sample the flue gas. Because different flues vary in diameter and height, the installation methods for the sampling devices also differ. Some sampling devices are fixed to the outer wall of the flue with screws or bolts, while others are installed using clamps.

[0004] However, these two common installation methods have obvious drawbacks. First, they lack installation flexibility, making it difficult to adapt to flues of different heights, positions, and outer diameters, thus increasing the difficulty of installation. Second, when dealing with flues with different curvatures, the existing installation methods cannot effectively adjust the angle, causing the sampling device to be unable to fit securely into the flue. During long-term operation, it is prone to loosening and displacement, resulting in insufficient installation stability and seriously affecting the accuracy and continuity of flue gas sampling. Utility Model Content

[0005] To address the technical problems of existing flue gas sampling devices, such as poor installation flexibility and inability to effectively adjust the installation angle, this utility model provides a flue gas sampling device.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A flue gas sampling device includes a fixed housing. One side of the fixed housing is connected to one end of a delivery pipeline, and the other end of the delivery pipeline is connected to a sampling component. A set of adjustable mounting components is connected to the upper and lower surfaces of the fixed housing. Each set of adjustable mounting components includes an electric telescopic rod, one end of which is perpendicularly connected to the fixed housing, and the other end is connected to a mounting frame. A set of hydraulic telescopic rods is connected to the left and right sides of each mounting frame. The hydraulic telescopic rods and the sampling component are located on the same side of the fixed housing. A set of rotating components is connected to the end of each hydraulic telescopic rod furthest from the mounting frame. The rotating components include a connecting shaft parallel to the hydraulic telescopic rod, which can rotate about its own center line. The end of the connecting shaft furthest from the hydraulic telescopic rod is perpendicularly connected to a clamping arm. The two clamping arms located above form a clamping arm group one, and the two clamping arms located below form a clamping arm group two.

[0008] By adopting the above structural scheme, the electric telescopic rod can adjust the clamping position and clamping length of the clamping arm on the flue, the hydraulic telescopic rod can adjust the distance between the clamping arms to adapt to flues with different outer diameters, and the connecting shaft of the rotating component can drive the clamping arm to rotate, realizing multi-angle adjustment. This ensures that the clamping arm can be firmly attached to the outer wall of the pipe, and ensures that the flue gas sampling device can be firmly installed on the outer wall of flues with various bends and curvatures. Thus, this utility model effectively solves the problems of low installation flexibility and difficulty in adapting to different flue shapes and positions, greatly improves the convenience and adaptability of device installation, reduces installation difficulty, improves installation stability, and ensures the accuracy and continuity of flue gas sampling.

[0009] As a preferred implementation of a flue gas sampling device, the rotating assembly includes a connecting block. One side of the connecting block is connected to a hydraulic telescopic rod, and the other side is rotatably connected to a main gear and a drive gear. The main gear meshes with the drive gear, the connecting shaft is coaxially connected to the main gear, and the drive gear is coaxially connected to the output shaft of the motor.

[0010] By adopting the above structural design, the motor can precisely control the rotation angle of the clamping arm. When facing flues with different curvatures, the angle of the clamping arm can be precisely adjusted to allow the device to better fit the flue. This solves the problem that existing installation methods are difficult to effectively adjust the angle, further improving the stability and flexibility of the installation. It ensures that the device will not loosen or shift due to angle issues during long-term operation, thus guaranteeing the stability of flue gas sampling.

[0011] In a preferred implementation of a flue gas sampling device, the main gear is located at the center of the connecting block, and the connecting shaft is coaxially arranged with the hydraulic telescopic rod.

[0012] The above-mentioned structural design ensures that the rotating component is subjected to uniform force during operation, and can rotate smoothly during the adjustment of the clamping arm angle, reducing swaying and deviation. Especially when dealing with curved flues, it can adjust the angle more stably, improving the adaptability of the device in complex flue environments, ensuring the reliability of installation, and laying the foundation for accurate and continuous flue gas sampling.

[0013] As a preferred implementation of a flue gas sampling device, the clamping arm is arc-shaped.

[0014] With the above structural design, the arc-shaped clamping arm can better fit the outer wall of the flue with different diameters and circular or similar shapes, resulting in a larger contact area compared to clamping arms of ordinary shapes. During installation, it provides more stable support, effectively solving the installation instability problem caused by poor fit between the clamping arm and the pipe. It also ensures a tighter fit in flues with varying degrees of curvature, preventing loosening or displacement of the device during long-term operation and ensuring that the accuracy and continuity of flue gas sampling remain unaffected.

[0015] As a preferred implementation of a flue gas sampling device, the inner side of the clamping arm is provided with an anti-slip pad.

[0016] By adopting the above structural design, the anti-slip pad increases the friction with the outer wall of the pipe, effectively preventing the device from sliding during installation and operation regardless of the pipe surface condition. Simultaneously, the cushioning effect of the anti-slip pad prevents damage to the outer wall of the pipe from the clamping arm. This improves the installation stability of the device in installation scenarios with different heights, positions, and bends in the flue, ensuring long-term stable operation of the flue gas sampling device and enhancing the reliability of data acquisition.

[0017] As a preferred implementation of a flue gas sampling device, each clamping arm has a slotted track on a surface perpendicular to the hydraulic telescopic rod. Two sets of fastening components are installed inside the slotted track. Each set of fastening components includes a slider, which is slidably connected in the slotted track. A support plate is perpendicularly connected to one side surface of the slider. The support plate has a threaded hole that matches a threaded rod. One end of the threaded rod facing the inside of the clamping arm has a clamping block, and the other end has a knob block.

[0018] The above-described structural design incorporates a slotted track and fastening components on each clamping arm. The slider can slide within the slotted track to adjust the position of the fastening components, adapting to flues of varying outer diameters. Rotating the knob block drives the threaded rod, allowing the clamps to tighten or loosen on the pipe. This significantly enhances the device's adaptability to pipes of different diameters, resolving the issue of insufficient installation flexibility and ensuring stable installation on various types of pipes, thus guaranteeing smooth flue gas sampling.

[0019] As a preferred implementation of a flue gas sampling device, the sampling assembly includes a filter cartridge, one end of which is connected to a conveying pipeline and the other end of which is connected to one end of a connecting pipeline. The other end of the connecting pipeline has two through holes, which are respectively connected to a first sampling tube and a second sampling tube. A flange is provided on the outer circumference of the connecting pipeline.

[0020] With the above structural design, the filter cartridge can effectively filter impurities in flue gas, ensuring the purity of the collected samples; the two sampling tubes can simultaneously acquire flue gas samples from different locations, providing more comprehensive data for accurate monitoring; the flange facilitates connection to the flue, making the device easy to install and disassemble, improving the device's versatility and convenience in different flue gas monitoring scenarios, and helping to improve the accuracy and efficiency of flue gas monitoring.

[0021] As a preferred implementation of a flue gas sampling device, the length of the second sampling tube is greater than that of the first sampling tube.

[0022] With the above-mentioned structural design, the composition of flue gas may vary at different depths. The second sampling tube is longer than the first sampling tube, which can collect flue gas samples at different depths in complex flue environments. This enriches the dimensions of the monitoring data, makes the monitoring results more reflective of the actual flue gas conditions in the flue, effectively improves the accuracy of the monitoring data, and provides more reliable data support for precise governance.

[0023] As a preferred implementation of a flue gas sampling device, the filter cartridge and the connecting pipe are provided with two channels inside, which are connected to the first sampling tube and the second sampling tube respectively. The fixed box is provided with two sets of flow regulating valves inside, one set of flow regulating valves is connected to the first sampling tube, and the other set of flow regulating valves is connected to the second sampling tube. The surface of the fixed box is provided with a gas path heat tracing pipe.

[0024] Using the above structural design, the flow regulating valve can precisely control the flue gas flow rate in the two sampling tubes, ensuring consistent sampling volume and improving sampling accuracy. After gas delivery to sampling tubes one and two, the collected gas is transported to the CEMS cabinet gas analyzer via a gas path heating pipe for subsequent testing. This prevents changes in flue gas composition due to temperature variations during delivery, ensuring the accuracy and reliability of the monitoring data.

[0025] As a preferred implementation of a flue gas sampling device, the clamping block is a rubber block.

[0026] With the above structural design, the rubber block has good elasticity and flexibility, and can closely fit the irregular surface of the pipe's outer wall, increasing friction and improving the fastening effect.

[0027] The beneficial effects of this utility model include:

[0028] This invention utilizes an electric telescopic rod to adjust the clamping position and length of the clamping arms over the flue, and a hydraulic telescopic rod to adjust the distance between the clamping arms. The connecting shaft of the rotating component drives the clamping arms to rotate, enabling multi-angle adjustment. This ensures that the flue gas sampling device can be flexibly installed and adjusted at multiple angles. It can adapt to flues of different heights, positions, outer diameters, and curvatures, and can also be installed stably. This greatly improves the convenience and adaptability of the device installation, reduces the installation difficulty, enhances installation stability, and ensures the accuracy and continuity of flue gas sampling. Attached Figure Description

[0029] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a three-dimensional schematic diagram of a flue gas sampling device according to an embodiment of the present utility model;

[0031] Figure 2 This is a schematic front view of an overall flue gas sampling device according to an embodiment of the present utility model;

[0032] Figure 3 This is a schematic diagram of the overall right side view of a flue gas sampling device according to an embodiment of this utility model;

[0033] Figure 4 This is a partial bottom view of a flue gas sampling device according to an embodiment of the present utility model;

[0034] Figure 5 for Figure 4 An enlarged diagram of A in the diagram.

[0035] List of components and reference numerals:

[0036] 1. Fixed housing; 2. Delivery pipeline; 3. Sampling assembly; 301. Filter cartridge; 302. Connecting pipeline; 303. Sampling tube No. 1; 304. Sampling tube No. 2; 305. Flange; 4. Adjustable mounting components; 401. Electric telescopic rod; 402. Mounting bracket; 5. Hydraulic telescopic rod; 6. Rotating assembly; 601. Connecting block; 602. Main gear; 603. Drive gear; 604. Connecting shaft; 605. Clamping arm; 606. Motor; 7. Anti-slip pad; 8. Slotted track; 9. Fastening assembly; 901. Slider; 902. Support plate; 903. Threaded hole; 904. Threaded rod; 905. Knob block; 906. Clamping block; 10. Flow regulating valve; 11. Gas heating pipe. Detailed Implementation

[0037] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] Reference Figure 1-5 This embodiment proposes a flue gas sampling device, including a fixed housing 1. One side of the fixed housing 1 is connected to one end of a conveying pipeline 2, and the other end of the conveying pipeline 2 is connected to a sampling component 3. The sampling component 3 includes a filter cartridge 301, one end of which is connected to the conveying pipeline 2, and the other end of which is connected to one end of a connecting pipeline 302. The other end of the connecting pipeline 302 has two through holes, which are respectively connected to a first sampling tube 303 and a second sampling tube 304. The second sampling tube 304 is longer than the first sampling tube 303. A flange 305 is provided on the outer circumferential surface of the connecting pipeline 302. Both the filter cartridge 301 and the connecting pipe 302 have two internal channels, which connect to sampling tube 303 (first sampling tube) and sampling tube 304 (second sampling tube) respectively. The fixed housing 1 has two sets of flow regulating valves 10 inside; one set connects to sampling tube 303, and the other connects to sampling tube 304. A gas path heating pipe 11 is installed on the surface of the fixed housing 1. The flow regulating valves 10 can precisely control the flue gas flow rate in the two sampling tubes, ensuring consistent sampling volume and improving sampling accuracy. After gas is transported through sampling tubes 303 and 304, the collected gas is transported to the CEMS cabinet gas analyzer via the gas path heating pipe 11 for subsequent detection. This prevents changes in flue gas composition due to temperature variations during transport, ensuring the accuracy and reliability of the monitoring data.

[0039] The upper and lower sides of the fixed box 1 are respectively connected to a set of adjustable mounting parts 4. Each set of adjustable mounting parts 4 includes an electric telescopic rod 401. One end of the electric telescopic rod 401 is vertically connected to the fixed box 1, and the other end is connected to the mounting frame 402. Each mounting frame 402 has a set of hydraulic telescopic rods 5 connected to its left and right sides respectively. The hydraulic telescopic rods 5 and the sampling component 3 are located on the same side of the fixed box 1.

[0040] A set of rotating components 6 is connected to the end of the hydraulic telescopic rod 5 away from the mounting bracket 402. The rotating components 6 include a connecting block 601. One side of the connecting block 601 is connected to the hydraulic telescopic rod 5, and the other side is rotatably connected to a main gear 602 and a drive gear 603. The main gear 602 is located at the center of the connecting block 601. The main gear 602 meshes with the drive gear 603. The main gear 602 is coaxially connected to the connecting shaft 604. The connecting shaft 604 is coaxially arranged with the hydraulic telescopic rod 5. The drive gear 603 is coaxially connected to the output shaft of the motor 606.

[0041] Driven by gears, the connecting shaft 604 can rotate around its own center line. The end of the connecting shaft 604 away from the hydraulic telescopic rod 5 is perpendicularly connected to the clamping arm 605. The two clamping arms 605 located above form a pair of clamping arm group one, and the two clamping arms 605 located below form a pair of clamping arm group two. Each clamping arm 605 is arc-shaped, and each clamping arm 605 has an anti-slip pad 7 on its inner side. Each clamping arm 605 has a slot track 8 on its surface perpendicular to the hydraulic telescopic rod 5. Two sets of fastening components 9 are installed inside the slot track 8. Each set of fastening components 9 includes a slider 901, which is slidably connected in the slot track 8. A support plate 902 is perpendicularly connected to one side surface of the slider 901. The support plate 902 has a threaded hole 903, which is adapted to a threaded rod 904. One end of the threaded rod 904 facing the inner side of the clamping arm 605 has a clamping block 906, and the other end has a knob block 905. The clamping block 906 is a rubber block.

[0042] Working principle:

[0043] One end of the electric telescopic rod 401 is vertically connected to the fixed housing 1, and the other end is connected to the mounting bracket 402. By extending or shortening the electric telescopic rod 401, the clamping position and clamping length of the clamping arm 605 over the flue can be adjusted. The hydraulic telescopic rods 5 on both sides of the mounting bracket 402 allow the clamping arm 605 to clamp pipes of different outer diameters. When facing a flue with a different curvature, the motor 606 starts, and its output shaft drives the coaxially connected drive gear 603 to rotate. Since the main gear 602 meshes with the drive gear 603, the main gear 602 rotates accordingly, which in turn drives the coaxial connecting shaft 604 to rotate. The rotation of the connecting shaft 604 causes the clamping arm 605, which is vertically connected to it, to rotate, achieving precise adjustment of the angle of the clamping arm 605 and ensuring that the device fits the flue. The arc-shaped clamping arm 605 has a higher fit with the outer wall of the circular or similar shaped pipe, increasing the contact area and providing more stable support. The anti-slip pad 7 on the inner side of the clamping arm 605 further increases the friction with the outer wall of the pipe, preventing the device from sliding during installation and operation, and also acting as a buffer to avoid damage to the pipe. In addition, the slider 901 in the slot track 8 on the clamping arm 605 can slide, thereby adjusting the position of the fastening component 9. Rotating the knob block 905 drives the threaded rod 904, causing the rubber clamp 906 to tighten or loosen the pipe, enhancing the adaptability and fixing effect to pipes of different diameters.

[0044] During sampling, flue gas enters sampling assembly 3 from the flue, first passing through sampling tube 303 and sampling tube 304, then entering the corresponding two channels within filter cartridge 301. The flow rate is regulated by the corresponding flow regulating valve 10 to ensure consistent sampling volume in both tubes. After gas delivery via sampling tubes 303 and 304, the gas path heating pipe 11 comes into play. It heats the collected gas to prevent compositional changes due to temperature variations during delivery to the CEMS cabinet gas analyzer, ensuring the accuracy and reliability of the monitoring data. Finally, the gas is delivered to the CEMS cabinet gas analyzer for subsequent testing, providing data support for flue gas monitoring and pollution control.

[0045] The flue gas sampling device in this embodiment does not include the CEMS cabinet gas analyzer; the CEMS cabinet gas analyzer is merely an example of a common gas analyzer.

[0046] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flue gas sampling device, comprising a fixed housing (1), one side of which is connected to one end of a conveying pipeline (2), and the other end of the conveying pipeline (2) is connected to a sampling component (3), characterized in that, A set of adjustable mounting parts (4) are connected to the upper and lower surfaces of the fixed box (1). Each set of adjustable mounting parts (4) includes an electric telescopic rod (401). One end of the electric telescopic rod (401) is vertically connected to the fixed box (1), and the other end is connected to the mounting frame (402). A set of hydraulic telescopic rods (5) are connected to the left and right sides of each mounting frame (402). The hydraulic telescopic rods (5) and the sampling component (3) are located on the same side of the fixed box (1). A set of rotating components (6) is connected to the end of the hydraulic telescopic rod (5) away from the mounting bracket (402). The rotating components (6) include a connecting shaft (604) arranged parallel to the hydraulic telescopic rod (5). The connecting shaft (604) can rotate around its own center line. The end of the connecting shaft (604) away from the hydraulic telescopic rod (5) is perpendicularly connected to the clamping arm (605). The two clamping arms (605) located above form a pair of clamping arm group one, and the two clamping arms (605) located below form a pair of clamping arm group two.

2. The flue gas sampling device according to claim 1, characterized in that, The rotating assembly (6) includes a connecting block (601), one side of which is connected to the hydraulic telescopic rod (5), and the other side is rotatably connected to a main gear (602) and a drive gear (603). The main gear (602) meshes with the drive gear (603), the connecting shaft (604) is coaxially connected to the main gear (602), and the drive gear (603) is coaxially connected to the output shaft of the motor (606).

3. The flue gas sampling device according to claim 2, characterized in that, The main gear (602) is located at the center of the connecting block (601), and the connecting shaft (604) is coaxially arranged with the hydraulic telescopic rod (5).

4. The flue gas sampling device according to claim 1, characterized in that, The clamping arm (605) is arc-shaped.

5. A flue gas sampling device according to claim 1, characterized in that, The inner side of the clamping arm (605) is provided with an anti-slip pad (7).

6. The flue gas sampling device according to claim 1, characterized in that, Each clamping arm (605) has a slotted track (8) on the surface perpendicular to the hydraulic telescopic rod (5). Two sets of fastening components (9) are installed inside the slotted track (8). Each set of fastening components (9) includes a slider (901). The slider (901) is slidably connected in the slotted track (8). A support plate (902) is vertically connected to one side surface of the slider (901). The support plate (902) has a threaded hole (903). The threaded hole (903) is adapted to the threaded rod (904). The threaded rod (904) has a clamping block (906) at one end facing the inside of the clamping arm (605) and a knob block (905) at the other end.

7. The flue gas sampling device according to claim 1, characterized in that, The sampling assembly (3) includes a filter cartridge (301). One end of the filter cartridge (301) is connected to the delivery pipeline (2), and the other end is connected to one end of the connecting pipeline (302). The other end of the connecting pipeline (302) has two through holes, which are respectively connected to the first sampling tube (303) and the second sampling tube (304). The outer circumferential surface of the connecting pipeline (302) is provided with a flange (305).

8. A flue gas sampling device according to claim 7, characterized in that, The length of sampling tube No. 2 (304) is greater than that of sampling tube No. 1 (303).

9. A flue gas sampling device according to claim 7, characterized in that, The filter cartridge (301) and the connecting pipe (302) are each provided with two channels, which are connected to the first sampling tube (303) and the second sampling tube (304) respectively. The fixed box (1) is provided with two sets of flow regulating valves (10). One set of flow regulating valves (10) is connected to the first sampling tube (303), and the other set of flow regulating valves (10) is connected to the second sampling tube (304). The surface of the fixed box (1) is provided with a gas path heat tracing pipe (11).

10. A flue gas sampling device according to claim 6, characterized in that, The clamping block (906) is a rubber block.

Images