Boiler flue gas detection device

Abstract

Relates to the field of flue gas detection, and discloses a boiler flue gas detection device which comprises a boiler, a chimney arranged at a smoke outlet of the boiler, a flue gas detection unit arranged in the chimney and used for detecting flue gas in the chimney, a traction rope, a detection unit and a control unit, the smoke detection unit is arranged on the chimney in a penetrating manner and is connected with the smoke detection unit; the adjusting unit is arranged on the boiler and connected with the traction rope; the guide wheel group is arranged on the chimney and is connected with the traction rope; the limiting ring is arranged on the outer side of the chimney; the length marking lines are arranged on the traction rope at intervals and used for detecting the installation height of the flue gas detection unit, the flue gas detection unit can detect flue gas at different positions in the chimney, so that the overall condition of the flue gas is reflected more accurately, the limitation of traditional single-point detection is overcome, and the detection accuracy is improved. And the accuracy of a detection result is improved.

Description

Technical Field

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

[0002] In the paper mill production process, boilers are one of the key pieces of equipment. The flue gas produced by their combustion contains various pollutants, posing a threat to the environment and human health. Therefore, real-time and accurate detection of boiler flue gas is particularly important. Traditional boiler flue gas detection methods typically involve installing detection devices at fixed locations on the chimney to monitor the flue gas emitted from the chimney.

[0003] Existing equipment has the following drawbacks: Due to the discrete nature of flue gas, the content and concentration of impurities are different at different locations. Detecting the flue gas content at only one location will affect the accuracy of the detection device in detecting harmful substances in the flue gas. Traditional flue gas detection devices are generally installed in fixed positions on the chimney, which cannot detect the temperature, sulfur dioxide and nitrogen oxide content, and particulate matter concentration of flue gas at different locations inside the chimney, and it is not convenient to switch detection positions.

[0004] Therefore, this application proposes a boiler flue gas detection device to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a boiler flue gas detection device to solve the problems mentioned above, such as the inability to detect the temperature, sulfur dioxide and nitrogen oxide content, and particulate matter concentration of flue gas at different locations inside the chimney, and the inability to easily switch detection locations.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a boiler flue gas detection device, comprising a boiler, a chimney installed at the boiler exhaust port, and a flue gas detection unit installed inside the chimney for detecting the flue gas inside the chimney, further comprising:

[0007] A traction rope, threaded through the chimney and connected to the flue gas detection unit, is used to adjust the installation height of the flue gas detection unit inside the chimney.

[0008] An adjustment unit, mounted on the boiler and connected to the traction rope, is used to wind up the traction rope;

[0009] A guide wheel assembly, mounted on the chimney and connected to the traction rope, is used to guide the traction rope;

[0010] A limiting ring, located on the outside of the chimney, is used to limit the movement of the traction rope;

[0011] Length markings are spaced out on the traction rope to indicate the installation height of the flue gas detection unit.

[0012] The adjustment unit includes a fixed plate fixed on the boiler, a rotating shaft set on the chimney, a winding roller fixed on the rotating shaft, and a turntable fixed on the side of the rotating shaft away from the chimney. The turntable is connected to the fixed plate by fixing bolts, and the turntable has fixing grooves at equal angles.

[0013] The flue gas detection unit includes a mounting frame installed inside the chimney and fixedly connected to the traction rope, a detection element installed at the lower end of the mounting frame, and a support device installed at the upper end of the mounting frame. The support device abuts against the inner wall of the chimney.

[0014] The detection component includes a protective box fixed on the mounting frame, a mounting rod fixed at an equal angle to the lower end of the protective box, and a detector fixed to the lower end of the mounting rod.

[0015] The upper end of the mounting bracket is fixed with a guide rod, and the upper end of the guide rod is fixed with a top bracket;

[0016] The support device includes a motor fixed to the lower end of the mounting frame, a screw fixed to the power output end of the motor and passing through the mounting frame, a lead screw sleeve threaded onto the lead screw, a lifting plate fixed to the upper end of the lead screw sleeve and sleeved on the lead screw, a push rod rotatably connected to the lifting plate, a support rod disposed on the side of the push rod away from the lifting plate, and a wheel disposed on the side of the support rod away from the push rod. The lower end of the support rod is rotatably disposed on the mounting frame, and the wheel abuts against the inner wall of the chimney.

[0017] The guide wheel assembly includes a first guide wheel fixed to the inner wall of the chimney and a second guide wheel fixed to the outer side of the chimney, and the traction rope is sleeved on the first guide wheel and the second guide wheel.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model enables the flue gas detection unit to detect flue gas at different locations inside the chimney, thereby more accurately reflecting the overall condition of the flue gas, overcoming the limitations of traditional single-point detection, and improving the accuracy of the detection results.

[0020] 2. A rolling support is provided for the entire detection unit, which reduces the frictional resistance between the detection unit and the inner wall of the chimney, making the detection unit smoother and more stable during adjustment, and further improving the accuracy and reliability of flue gas detection. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure in one embodiment of the present invention;

[0022] Figure 2 This is a cross-sectional structural schematic diagram of one embodiment of the present invention;

[0023] Figure 3 This is a front view of a structural schematic diagram of one embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure connecting the flue gas detection unit and the adjustment unit in one embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of a chimney in one embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the flue gas detection unit in contact with the inner wall of the chimney in one embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the flue gas detection unit structure in one embodiment of the present invention;

[0028] Figure 8 for Figure 4 Enlarged structural diagram of section A in the middle.

[0029] In the diagram: 1. Boiler; 2. Chimney; 21. First guide wheel; 22. Second guide wheel; 23. Restriction ring; 3. Flue gas detection unit; 31. Mounting frame; 311. Guide rod; 312. Top frame; 32. Detector; 321. Protective box; 322. Mounting rod; 323. Detector; 33. Support device; 331. Motor; 332. Screw; 333. Lead screw sleeve; 334. Lifting plate; 335. Push rod; 336. Support rod; 337. Wheel; 4. Traction rope; 41. Length mark; 5. Adjustment unit; 51. Rotating shaft; 52. Turntable; 521. Fixing groove; 53. Take-up roller; 54. Fixing plate; 55. Fixing bolt. Detailed Implementation

[0030] 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.

[0031] Please see Figure 1-8This utility model provides a technical solution: a boiler flue gas detection device, including a boiler 1, a chimney 2 installed at the flue gas outlet of the boiler 1, and a flue gas detection unit 3 installed inside the chimney 2 for detecting the flue gas inside the chimney 2, and further including:

[0032] The traction rope 4 is threaded on the chimney 2 and connected to the flue gas detection unit 3, and is used to adjust the installation height of the flue gas detection unit 3 inside the chimney 2.

[0033] Adjustment unit 5 is installed on boiler 1 and connected to traction rope 4, and is used to wind up traction rope 4;

[0034] The guide wheel assembly is installed on the chimney 2 and connected to the traction rope 4, and is used to guide the traction rope 4.

[0035] A limiting ring 23 is set on the outside of the chimney 2 to limit the traction rope 4;

[0036] Length markings 41 are spaced out on the traction rope 4 and are used to detect the installation height of the flue gas detection unit 3.

[0037] It should be noted that during operation, when boiler 1 processes paper, the flue gas generated is discharged from chimney 2 and then passes through flue gas detection unit 3. Flue gas detection unit 3 detects the temperature, sulfur dioxide and nitrogen oxide content, and particulate matter concentration of the flue gas. The traction rope 4 can be wound up by adjustment unit 5, and the installation height of flue gas detection unit 3 inside chimney 2 can be adjusted by traction rope 4. The guide wheel group and limiting ring 23 can guide and restrict the movement of traction rope 4, making the movement of traction rope 4 more stable. The length mark 41 can facilitate the observation of the position of flue gas detection unit 3 inside chimney 2 by the staff. By setting up this device, the flue gas detection unit 3 can detect the flue gas at different positions inside chimney 2, thereby more accurately reflecting the overall condition of the flue gas, overcoming the limitations of traditional single-point detection, and improving the accuracy of the detection results.

[0038] In one embodiment, the adjustment unit 5 includes a fixed plate 54 fixed on the boiler 1, a rotating shaft 51 set on the chimney 2, a winding roller 53 fixed on the rotating shaft 51, and a turntable 52 fixed on the side of the rotating shaft 51 away from the chimney 2. The turntable 52 is connected to the fixed plate 54 by fixing bolts 55, and a fixing groove 521 is provided on the turntable 52 at equal angles.

[0039] This design is for reference. Figure 4 ,as well as Figure 5Rotating the turntable 52 causes the rotating shaft 51 to drive the winding roller 53 to rotate, which in turn winds up the traction rope 4. After the traction rope 4 adjusts the installation position of the flue gas detection unit 3, the turntable 52 and the fixing plate 54 are fixed by the fixing bolts 55. The fixing bolts 55 can be fixed in the corresponding fixing grooves 521 according to the alignment of the fixing grooves 521 on the turntable 52 and the fixing plate 54, which improves the flexibility and accuracy of operation.

[0040] In one embodiment, the flue gas detection unit 3 includes a mounting frame 31 disposed inside the chimney 2 and fixedly connected to the traction rope 4, a detection element 32 disposed at the lower end of the mounting frame 31, and a support device 33 disposed at the upper end of the mounting frame 31, the support device 33 abutting against the inner wall of the chimney 2.

[0041] This design is for reference. Figure 4-7 The support device 33 is set at the upper end of the mounting frame 31 and abuts against the inner wall of the chimney 2, providing a stable support for the entire detection unit. It not only shares the load-bearing pressure of the traction rope 4, but also reduces the risk of deformation and damage to the detection unit caused by long-term suspension, thus extending the service life of the equipment. When the traction rope 4 loosens, the flue gas detection unit 3 moves down inside the chimney 2 under the action of gravity, and the detection element 32 at the lower end of the mounting frame 31 can capture and detect harmful substances in the flue gas in real time and accurately.

[0042] In one embodiment, the detection element 32 includes a protective box 321 fixed on the mounting frame 31, a mounting rod 322 fixed at an equal angle to the lower end of the protective box 321, and a detector 323 fixed to the lower end of the mounting rod 322.

[0043] This design is for reference. Figure 7 The detector 323 includes a temperature sensor, a sulfur dioxide sensor, a particulate matter detector, and a nitrogen oxide sensor. It can move up and down inside the chimney 2 under the drive of the mounting frame 31 to detect the temperature, sulfur dioxide and nitrogen oxide content, and particulate matter concentration of the flue gas inside the chimney 2.

[0044] In one embodiment, a guide rod 311 is fixed to the upper end of the mounting bracket 31, and a top bracket 312 is fixed to the upper end of the guide rod 311.

[0045] The support device 33 includes a motor 331 fixed to the lower end of the mounting frame 31, a screw 332 fixed to the power output end of the motor 331 and passing through the mounting frame 31, a screw sleeve 333 threadedly connected to the screw 332, a lifting plate 334 fixed to the upper end of the screw sleeve 333 and sleeved on the screw 332, a push rod 335 rotatably connected to the lifting plate 334, a support rod 336 disposed on the side of the push rod 335 away from the lifting plate 334, and a wheel 337 disposed on the side of the support rod 336 away from the push rod 335. The lower end of the support rod 336 is rotatably disposed on the mounting frame 31, and the wheel 337 abuts against the inner wall of the chimney 2.

[0046] This design is for reference. Figure 7 The motor 331 drives the screw 332 to rotate, providing power for the up-and-down movement of the lead screw sleeve 333. The lifting plate 334 moves with the lead screw sleeve 333, causing the push rod 335 to drive the support rod 336 to rotate along the mounting frame 31, which in turn drives the wheel 337 to expand outward and then abut against the inner wall of the chimney 2, providing a rolling support for the entire detection unit. This reduces the frictional resistance between the detection unit and the inner wall of the chimney 2, making the detection unit smoother and more stable during adjustment, and further improving the accuracy and reliability of flue gas detection.

[0047] In one embodiment, the guide wheel assembly includes a first guide wheel 21 fixed to the inner wall of the chimney 2 and a second guide wheel 22 fixed to the outer side of the chimney 2, and the traction rope 4 is sleeved on the first guide wheel 21 and the second guide wheel 22.

[0048] This design is for reference. Figure 8 By fitting the traction rope 4 onto the first guide wheel 21 and the second guide wheel 22, the direct contact and friction between the traction rope 4 and the inner wall of the chimney 2 are effectively reduced. This not only reduces the wear rate of the traction rope 4 and extends its service life, but also reduces the resistance caused by friction, making the movement of the traction rope 4 smoother.

[0049] Furthermore, if the embodiments involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relation to the specification. The significance or implied number of the indicated technical features is not specified. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

Claims

1. A boiler flue gas detection device comprising a boiler (1), a chimney (2) provided at a flue gas outlet of the boiler (1), and a flue gas detection unit (3) provided inside the chimney (2) for detecting flue gas inside the chimney (2), characterized in that, Also include: A traction rope (4) is arranged on the chimney (2) and connected with the flue gas detection unit (3), used for adjusting the installation height of the flue gas detection unit (3) inside the chimney (2); An adjusting unit (5) is arranged on the boiler (1) and connected with the traction rope (4), used for winding the traction rope (4); A guide wheel set is arranged on the chimney (2) and connected with the traction rope (4), used for guiding the traction rope (4); A limiting ring (23) is arranged outside the chimney (2), used for limiting the traction rope (4); A length scale (41) is arranged on the traction rope (4) at intervals, used for the installation height of the detection flue gas detection unit (3).

2. A boiler flue gas detection device according to claim 1, characterised in that: The adjusting unit (5) comprises a fixed plate (54) fixed on the boiler (1), a rotating shaft (51) arranged on the chimney (2), a winding roller (53) fixed on the rotating shaft (51), and a rotating disc (52) fixed on the side of the rotating shaft (51) away from the chimney (2), the rotating disc (52) is connected with the fixed plate (54) through a fixing bolt (55), and the rotating disc (52) is provided with fixed grooves (521) at equal angles.

3. A boiler flue gas detection device according to claim 1, characterized in that: The flue gas detection unit (3) comprises a mounting bracket (31) arranged inside the chimney (2) and fixedly connected with the traction rope (4), a detection member (32) arranged at the lower end of the mounting bracket (31), and a supporting device (33) arranged at the upper end of the mounting bracket (31), and the supporting device (33) abuts against the inner wall of the chimney (2).

4. A flue gas detection device for a boiler as claimed in claim 3, characterized in that: The detection member (32) comprises a protection box (321) fixed on the mounting bracket (31), an installation rod (322) fixed at equal angles at the lower end of the protection box (321), and a detector (323) fixed at the lower end of the installation rod (322).

5. A flue gas detection device for a boiler as claimed in claim 3, wherein: The upper end of the mounting bracket (31) is fixed with a guide rod (311), and the upper end of the guide rod (311) is fixed with a top bracket (312); The supporting device (33) comprises a motor (331) fixed at the lower end of the mounting bracket (31), a screw rod (332) fixed on the power output end of the motor (331) and penetrating through the mounting bracket (31), a lead screw sleeve (333) threadedly connected on the screw rod (332), a lifting plate (334) fixed on the upper end of the lead screw sleeve (333) and sleeved on the screw rod (332), a push rod (335) rotationally connected on the lifting plate (334), a supporting rod (336) arranged on the side of the push rod (335) away from the lifting plate (334), and a wheel (337) arranged on the side of the supporting rod (336) away from the push rod (335), the lower end of the supporting rod (336) is rotationally arranged on the mounting bracket (31), and the wheel (337) abuts against the inner wall of the chimney (2).

6. A boiler flue gas detection device according to claim 1, characterized in that: The guide wheel set comprises a first guide wheel (21) fixed on the inner wall of the chimney (2) and a second guide wheel (22) fixed on the outer side of the chimney (2), and the traction rope (4) is sleeved on the first guide wheel (21) and the second guide wheel (22).

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