Flue gas detection pipe with inner cylinder steel chimney
By designing a flue gas detection pipe with an inner steel chimney, and utilizing the cooperation of a slider and a threaded rod to achieve detachable installation of the detection device, the problem of soot adhesion affecting detection accuracy is solved, and efficient flue gas detection is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-03-17
AI Technical Summary
Existing flue gas detection pipes are connected to chimneys for extended periods, causing soot to adhere and affecting detection accuracy.
A flue gas detection tube with an inner steel chimney was designed. The detection device can be detached and installed by means of a slider, a convex groove and a threaded rod, which prevents soot from contacting the detection surface. The installation parts are stored in a box to prevent rainwater from affecting them.
It improves the accuracy of flue gas detection, avoids the impact of soot and rainwater on the detection device, and extends its service life.
Smart Images

Figure CN224005040U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flue gas detection technology, specifically a flue gas detection tube with an inner steel chimney. Background Technology
[0002] Flue gas detection pipes with inner steel chimneys are widely used in situations requiring monitoring of flue gas composition and concentration, such as chimney emission monitoring in industrial enterprises like power plants, chemical plants, and steel mills. By monitoring flue gas composition and concentration in real time, flue gas emission problems can be detected and addressed promptly, ensuring that enterprises comply with environmental regulations.
[0003] Existing flue gas detection tubes are connected to chimneys for extended periods, resulting in soot accumulating inside the tubes. When using detection devices to monitor flue gas, the soot surface that the devices come into contact with can affect the accuracy of flue gas detection. To address this, we propose a flue gas detection tube with an inner steel chimney. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a flue gas detection tube with an inner steel chimney. It has the advantages of strong practicality, good stability, ease of flue gas detection, and convenient placement of the support device for the detection device. It solves the problem that traditional flue gas detection tubes with inner steel chimneys are connected to the chimney for a long time, resulting in soot adhering to the inside of the flue gas detection tube. When using the detection device to detect flue gas, the surface of the soot is easily touched by the device, which affects the accuracy of the flue gas detection.
[0005] This utility model provides the following technical solution: a flue gas detection pipe with an inner steel chimney, including a steel chimney body, a through groove is formed on the surface of the steel chimney body, a detection pipe body is installed inside the through groove, a sliding groove is formed inside the detection pipe body, and an installation component is installed inside the sliding groove;
[0006] The mounting component includes a slider. A first convex groove is formed on the left side of the slider, and a second convex groove is formed on the right side of the slider. A connecting block is slidably connected inside the first convex groove. A limit block is installed on the side of the connecting block near the second convex groove. A first support block is installed on the surface of the slider. A first circular tube is installed at the other end of the first support block. A first arc-shaped plate is installed on the surface of the first circular tube. A movable block is installed at the other end of the connecting block. A second support block is installed on the surface of the movable block. A second circular tube is installed at the other end of the second support block. A second arc-shaped plate is provided on the surface of the second circular tube. A cylinder is installed on the side of the second arc-shaped plate near the first arc-shaped plate. A threaded rod is slidably connected inside the cylinder. A nut is threaded onto the surface of the threaded rod. A baffle is provided on the side of the slider away from the main body of the steel chimney.
[0007] As a preferred embodiment of this utility model, the number of the sliding grooves is four, and the four sliding grooves are evenly opened on the inner wall of the detection tube body, and the interior of each of the four sliding grooves is slidably connected to a slider.
[0008] As a preferred embodiment of this utility model, the inner wall length of the first convex groove is less than the inner wall length of the second convex groove.
[0009] As a preferred embodiment of this utility model, the inner diameter of the first circular tube is the same as the inner diameter of the second circular tube, and the first circular tube and the second circular tube are parallel to each other.
[0010] As a preferred embodiment of this utility model, the surface of the detection tube body is provided with an installation plate, the top of the installation plate is provided with a placement box, the top of the placement box is provided with a cover plate, and a face shield is threadedly connected to the surface of the detection tube body.
[0011] As a preferred embodiment of this utility model, the outer diameter of the baffle is the same as the outer diameter of the detection tube body, and the moving block is in contact with the inner wall of the chute.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. The flue gas detection tube of the steel chimney with inner cylinder, through the cooperation of the slider, the first convex groove and the second convex groove, allows the connecting block to move inside the first convex groove, thereby facilitating the lengthening of the distance between the first and second circular tubes. The lengthened distance allows the nut to be rotated, so that the nut can fix the position of the cylinder, thus facilitating the placement of the detection device through the first circular tube into the inside of the second circular tube. During flue gas detection, the slider and the moving block are slidably connected inside the groove. At the same time, the installed first and second support blocks can prevent the soot inside the detection tube body from touching the surface of the detection device, thereby avoiding affecting the accuracy of the detection.
[0014] 2. The flue gas detection pipe of the steel chimney with inner cylinder is installed in a placement box on the top of the mounting plate. After the flue gas detection is completed, the installation part can be removed from the inside of the detection pipe body. At the same time, the nut is turned in the opposite direction to facilitate the retraction of the installation part, so that the installation part can be placed inside the placement box. The cover plate installed on the top of the placement box can seal the inside of the placement box. At the same time, the mounting plate can prevent rainwater from dripping onto the surface of the detection pipe body, thereby avoiding thermal expansion and contraction between the rainwater and the surface of the detection pipe body, which could cause the weld between the detection pipe body and the steel chimney body to loosen. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the front structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the through-slot structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the slide groove structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the exploded structure of this utility model.
[0019] In the diagram: 1. Main body of steel chimney; 2. Through groove; 3. Main body of detection tube; 4. Slide groove; 5. Mounting component; 501. Sliding block; 502. First convex groove; 503. Second convex groove; 504. Connecting block; 505. Limiting block; 506. First support block; 507. First round tube; 508. First arc plate; 509. Moving block; 510. Second support block; 511. Second round tube; 512. Second arc plate; 513. Cylinder; 514. Threaded rod; 515. Nut; 516. Baffle; 6. Mounting plate; 7. Placement box; 8. Cover plate; 9. Mask. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1-4 A flue gas detection pipe with an inner steel chimney includes a steel chimney body 1, a through groove 2 is opened on the surface of the steel chimney body 1, a detection pipe body 3 is installed inside the through groove 2, a sliding groove 4 is opened inside the detection pipe body 3, and an installation component 5 is installed inside the sliding groove 4.
[0022] Mounting component 5 includes a slider 501. A first convex groove 502 is formed on the left side of the slider 501, and a second convex groove 503 is formed on the right side of the slider 501. A connecting block 504 is slidably connected inside the first convex groove 502. A limit block 505 is installed on the side of the connecting block 504 near the second convex groove 503. A first support block 506 is installed on the surface of the slider 501. A first circular tube 507 is installed at the other end of the first support block 506. A first arc-shaped plate 508 is installed on the surface of the first circular tube 507. A moving block 509 is installed at the other end of the connecting block 504. A second support block 510 is installed on the surface of the moving block 509. A second circular tube 511 is installed at the other end of the second support block 510. The surface of the first arc plate 508 is provided with a second arc plate 512. A cylinder 513 is installed on the side of the second arc plate 512 near the first arc plate 508. A threaded rod 514 is slidably connected inside the cylinder 513. A nut 515 is threadedly connected to the surface of the threaded rod 514. A baffle 516 is provided on the side of the slider 501 away from the steel chimney body 1. A through groove 2 is opened on the surface of the steel chimney body 1 to facilitate welding the detection tube body 3 to the inner wall of the through groove 2. Four evenly distributed sliding grooves 4 are opened on the inner wall of the detection tube body 3, and the sliding grooves 4 penetrate through the other end of the detection tube body 3. The inner wall of the sliding grooves 4 can slidably connect the slider 501. The length of the slider 501 is half the length of the detection tube body 3. The left and right sides of the slider 501 are respectively provided with... A first convex groove 502 and a second convex groove 503 are provided, with the inner wall of the first convex groove 502 being smaller than the inner wall of the second convex groove 503. A connecting block 504 is slidably connected inside the first convex groove 502. A limiting block 505 is installed on the right side of the connecting block 504, allowing the limiting block 505 to limit the connecting block 504 and prevent it from sliding out of the inner wall of the first convex groove 502. A first support block 506 is welded to the surface of the second convex groove 503, with the other end of the first support block 506 mounted on the surface of a first circular tube 507. Four first support blocks 506 are welded to the surface of the first circular tube 507, providing support for the first circular tube 507. A first arc-shaped plate 508 is installed on the surface of the tube 507, and the first arc-shaped plate 508 is installed between two first support blocks 506. A moving block 509 is installed on the left side of the connecting block 504, and the moving block 509 is slidably connected to the inside of the slide groove 4. A second support block 510 is installed on the surface of the moving block 509, so that the second support block 510 can support the second round tube 511. A cylinder 513 is installed on the right side of the second arc-shaped plate 512, which can slide on the surface of the threaded rod 514. At the same time, rotating the nut 515 can fix the position of the pulled-out second round tube 511, thereby facilitating the detection instrument to detect the flue gas. The installed baffle 516 can prevent the installation part 5 from slipping into the inside of the detection tube body 3.
[0023] Please see Figure 1The surface of the detection tube body 3 is provided with a mounting plate 6, the top of the mounting plate 6 is provided with a placement box 7, the top of the placement box 7 is provided with a cover plate 8, and a face shield 9 is threadedly connected to the surface of the detection tube body 3. The mounting plate 6 is installed on the surface of the detection tube body 3 near the top of the steel chimney body 1. The placement box 7 installed on the top of the mounting plate 6 can store the used installation parts 5, thus facilitating the placement of the installation parts 5. The length of the mounting plate 6 is longer than the diameter of the detection tube body 3, thus protecting the detection tube body 3 from rain. At the same time, the top of the placement box 7 is connected to the cover plate 8 through a hinge, thus facilitating the closure of the placement box 7. The face shield 9 threadedly connected to the surface of the detection tube body 3 can seal the inside of the detection tube body 3, thus preventing the leakage of flue gas.
[0024] Working principle: During operation, when detecting the flue gas inside the main body 1 of the steel chimney, the mounting part 5 can be removed from the inside of the placement box 7. At the same time, the moving block 509 is pulled, which allows the length of the mounting part 5 to be extended. Then, the rotating nut 515 is used to fix the position of the cylinder 513, thereby preventing the connecting block 504 from retracting into the first convex groove 502. When detecting the flue gas, the detection device needs to be placed inside the first circular tube 507 and the second circular tube 511, thereby pushing the moving block 509 so that the moving block 509 can slide along the inner wall of the slide groove 4, thus moving the mounting part 504. 09 can move the connecting block 504 to move the detection device into the interior of the steel chimney body 1 for flue gas detection. At the same time, the installed baffle 516 can prevent the device from sliding into the interior of the detection tube body 3. After the flue gas detection is completed, the nut 515 can be rotated in the opposite direction so that the connecting block 504 can retract into the interior of the slider 501, thereby facilitating the placement of the mounting part 5 into the interior of the placement box 7. The mounting plate 6 installed at the bottom of the placement box 7 can prevent rainwater from falling onto the surface of the detection tube body 3 and avoid thermal expansion and contraction causing the welding between the detection tube body 3 and the steel chimney body 1 to loosen.
[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A flue gas detection tube with an in-line steel chimney, comprising a steel chimney body (1), characterized in that: The surface of the steel chimney body (1) is provided with a through groove (2), the inside of the through groove (2) is provided with a detection tube body (3), the inside of the detection tube body (3) is provided with a sliding groove (4), and the inside of the sliding groove (4) is provided with a mounting piece (5). The mounting piece (5) comprises a sliding block (501), a first convex groove (502) is formed in the left side of the sliding block (501), a second convex groove (503) is formed in the right side of the sliding block (501), a connecting block (504) is slidably connected in the first convex groove (502), a limiting block (505) is mounted on the side of the connecting block (504) close to the second convex groove (503), a first supporting block (506) is mounted on the surface of the sliding block (501), a first circular tube (507) is mounted on the other end of the first supporting block (506), a first arc-shaped plate (508) is mounted on the surface of the first circular tube (507), a moving block (509) is mounted on the other end of the connecting block (504), a second supporting block (510) is mounted on the surface of the moving block (509), a second circular tube (511) is mounted on the other end of the second supporting block (510), a second arc-shaped plate (512) is arranged on the surface of the second circular tube (511), a cylindrical tube (513) is mounted on the side of the second arc-shaped plate (512) close to the first arc-shaped plate (508), a threaded rod (514) is slidably connected in the cylindrical tube (513), and a nut (515) is threadedly connected on the surface of the threaded rod (514).
2. The flue gas detection tube for an in-line steel chimney according to claim 1, characterized in that: The number of the sliding grooves (4) is four, and the four sliding grooves (4) are evenly formed in the inner wall of the detection tube body (3), and the sliding block (501) is slidably connected in the four sliding grooves (4).
3. The flue gas detection tube for an in-line steel chimney according to claim 1, characterized in that: The inner wall length of the first convex groove (502) is less than that of the second convex groove (503).
4. The flue gas detection tube for an in-line steel chimney according to claim 1, characterized in that: The inner wall diameter of the first circular tube (507) is the same as that of the second circular tube (511), and the first circular tube (507) and the second circular tube (511) are parallel to each other.
5. The flue gas detection tube for an in-line steel chimney according to claim 1, characterized in that: The surface of the detection tube body (3) is provided with a mounting plate (6), the top of the mounting plate (6) is provided with a placing box (7), the top of the placing box (7) is provided with a cover plate (8), and the surface of the detection tube body (3) is threadedly connected with a face mask (9).
6. The flue gas detection tube for an in-line steel chimney according to claim 1, characterized in that: The outer wall diameter of the baffle (516) is the same as that of the detection tube body (3), and the moving block (509) is attached to the inner wall of the sliding groove (4).