A wide load denitration synergistic regulation and control device of a double-row flue gas port bypass flue

Abstract

The utility model relates to the field of purification environmental protection technology discloses a kind of wide load denitration collaborative control device of double-row smoke outlet bypass flue, including main pipeline, the outside of main pipeline is equipped with adjusting mechanism, the adjusting mechanism is used to control smoke quantity, the middle part of main pipeline is equipped with stirring mechanism, and the stirring mechanism is used to stir different temperature flue gas;The adjusting mechanism includes multiple baffles, multiple The baffle is all installed in the outside of main pipeline, the upper and lower end of baffle is slidably connected with buffer arc plate, the middle part of baffle is fixedly connected with rotating column, and the outside top end of baffle is equipped with driving assembly.In the utility model, under the transmission effect of chain, two sprockets rotate synchronously, and then drive the worm at the bottom of sprocket to rotate with it, when worm rotates, by the intermeshing with worm wheel, worm wheel can be driven to rotate, and then make the rotating column in the middle of baffle rotate, realize the angle adjustment of baffle.

Description

Technical Field

[0001] This utility model relates to the field of purification and environmental protection technology, and in particular to a wide-load denitrification synergistic control device for a double-row smoke intake bypass flue. Background Technology

[0002] The double-row flue gas intake bypass duct in power plants is a flue gas structure designed to optimize flue gas treatment and operational flexibility. Its core feature is the installation of two parallel bypass channels next to the main flue gas duct, each equipped with a flue gas intake. The double-row flue gas intake can draw flue gas from different locations or operating conditions of the boiler, and achieve flue gas diversion through the bypass flue gas duct. This not only allows some flue gas to be directly introduced into subsequent purification equipment to improve treatment efficiency, but also maintains the stable operation of the flue gas system by adjusting the opening of the double-row flue gas intake and the flow rate of the bypass flue gas duct during main flue gas maintenance, equipment failure, or low-load operation, avoiding unit shutdown due to a single channel problem. It is an important component for improving the reliability and adaptability of flue gas systems in large power plants.

[0003] The wide-load denitrification coordinated control device of the double-row flue gas intake bypass flue in power plants is a key device for achieving stable denitrification inlet flue gas temperature and efficient denitrification under full load by drawing flue gas from different areas through the double-row flue gas intake, guiding it through the bypass flue, and coordinating the adjustment of the high-temperature flue gas mixing amount. The existing control device uses a motor-driven baffle to control the flue gas intake, but the baffle will not be sealed tightly due to flue gas scouring, ash accumulation and corrosion over a long period of time, resulting in unexpected flue gas leakage and interfering with the flue gas intake control. The existing technology adds an automatic ash removal device to the baffle shaft end to periodically remove the ash accumulation at the shaft seal to avoid the ash accumulation affecting the air tightness. However, the ash removal device operates on a fixed cycle, while the baffle rotates on different cycles according to different flue gas intake requirements. The asynchrony of the two adjustment actions will cause "motion interference" between the scraper and the baffle shaft, resulting in mechanical jamming and affecting the flue gas intake control accuracy. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a wide-load denitrification coordinated control device for a double-row smoke intake bypass flue. It aims to improve the problem in the prior art where the ash removal device operates on a fixed cycle, while the baffle rotates on different cycles depending on the different needs of the smoke intake. The asynchronous adjustment of the two will cause "motion interference" between the scraper and the baffle shaft, resulting in mechanical jamming and affecting the accuracy of smoke intake control.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wide-load denitrification synergistic control device for a double-row smoke intake bypass flue, comprising a main pipeline, an adjustment mechanism installed on the outer side of the main pipeline for controlling the smoke intake volume, a stirring mechanism installed in the middle of the main pipeline for stirring flue gas at different temperatures; the adjustment mechanism includes multiple baffles, all of which are installed on the outer side of the main pipeline, buffer arc plates are slidably connected to the upper and lower ends of the baffles, a rotating column is fixedly connected to the middle of the baffles, and a drive assembly is installed at the top outer side of the baffles.

[0006] As a further description of the above technical solution:

[0007] The drive assembly includes a servo motor, with multiple sprockets mounted on the outer bottom end of the servo motor. The output end of the servo motor is fixedly connected to the top of the outer wall of the sprockets. A chain is mounted on the outer wall of the sprockets, and the outer walls of the multiple sprockets are meshed with the inside of the chain. A worm is fixedly connected to the bottom of the outer wall of the multiple sprockets. A worm wheel is mounted on the front side of the outer wall of the worm, and the front side of the outer wall of the worm meshes with the rear side of the outer wall of the worm wheel. A support frame is fixedly connected to the outer wall of the servo motor.

[0008] As a further description of the above technical solution:

[0009] The stirring mechanism includes a support plate, which is installed in the middle of the main pipeline. A rotating shaft is rotatably connected to the top of the support plate, and a fan blade is fixedly connected to the front end of the outer wall of the rotating shaft. A power assembly is installed on the outside of the support plate.

[0010] As a further description of the above technical solution:

[0011] The power assembly includes a second servo motor. The output end of the second servo motor is fixedly connected to a drive shaft. The outer wall of the drive shaft is rotatably connected to the outer wall of the main pipeline. A first helical gear is fixedly connected to the middle of the outer wall of the drive shaft. A second helical gear is installed on the left side of the outer wall of the first helical gear. The middle of the second helical gear is fixedly connected to the outer wall of the shaft. The left side of the outer wall of the first helical gear meshes with the right side of the outer wall of the second helical gear. A second support frame is fixedly connected to the outer wall of the second servo motor. The bottom end of the outer wall of the second support frame is fixedly connected to the top of the outer wall of the main pipeline.

[0012] As a further description of the above technical solution:

[0013] A connecting channel is fixedly connected to the middle of the main pipeline, and side flues are fixedly connected to the left and right ends of the outer wall of the connecting channel. The bottom end of the outer wall of the support frame is fixedly connected to the top end of the outer wall of the side flue.

[0014] As a further description of the above technical solution:

[0015] A protective cover is fixedly connected to the top of the outer wall of the main pipeline, and the chain is installed inside the protective cover.

[0016] As a further description of the above technical solution:

[0017] Each of the multiple side smoke pipes has a smoke extraction pipe installed at the front end of its outer wall, and each of the multiple smoke extraction pipes has a wind horn fixedly connected to its bottom end.

[0018] As a further description of the above technical solution:

[0019] A fixing plate is fixedly connected to the front end of the outer wall of the side smoke pipe, and a fixing plate is fixedly connected to the rear end of the outer wall of the smoke extraction pipe. Bolts are installed at the four corners of the multiple fixing plates.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, when the servo motor is turned on, its output end drives the sprocket to rotate. Under the transmission action of the chain, the two sprockets rotate synchronously, which in turn drives the worm at the bottom of the sprocket to rotate together. When the worm rotates, it can drive the worm wheel to rotate through mutual meshing, thereby causing the rotating column in the middle of the baffle to rotate, so as to realize the angle adjustment of the baffle.

[0022] 2. In this utility model, when the servo motor 2 is turned on, its output end drives the transmission shaft to rotate, which in turn causes the helical gear 1 welded on the outer wall of the transmission shaft to rotate. Through the meshing of helical gear 1 and helical gear 2, the helical gear 2 is driven to rotate, which in turn causes the rotating shaft at the top of the support plate to rotate. The fan blades at the front end of the outer wall of the rotating shaft rotate together with it. During the rotation of the fan blades, the flue gas at different temperatures in the main pipeline can be stirred, accelerating the mixing of the flue gas. Attached Figure Description

[0023] Figure 1 This is a front view of a wide-load denitrification synergistic control device for a double-row smoke intake bypass flue proposed in this utility model;

[0024] Figure 2 A perspective view of a wide-load denitrification synergistic control device for a double-row smoke intake bypass flue proposed in this utility model;

[0025] Figure 3 This is a side view of a wide-load denitrification synergistic control device for a double-row smoke intake bypass flue proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the regulating mechanism of a wide-load denitrification synergistic control device for a double-row smoke intake bypass flue proposed in this utility model;

[0027] Figure 5 This is a partial structural breakdown diagram of the regulating mechanism of a wide-load denitrification synergistic control device for a double-row smoke intake bypass flue proposed in this utility model;

[0028] Figure 6 This diagram illustrates the stirring mechanism of a wide-load denitrification synergistic control device for a double-row smoke intake bypass flue proposed in this utility model.

[0029] Legend:

[0030] 1. Main pipe; 2. Adjustment mechanism; 201. Baffle; 202. Buffer arc plate; 203. Rotating column; 204. Drive assembly; 2041. Servo motor one; 2042. Sprocket; 2043. Chain; 2044. Worm; 2045. Worm wheel; 2046. Support frame one; 3. Stirring mechanism; 301. Support plate; 302. Rotating shaft; 303. Fan blade; 304. Power assembly; 3041. Servo motor two; 3042. Drive shaft; 3043. Helical gear one; 3044. Helical gear two; 3045. Support frame two; 4. Connecting channel; 5. Side flue; 6. Protective cover; 7. Smoke extraction pipe; 8. Wind horn; 9. Fixing plate; 10. Bolt. Detailed Implementation

[0031] 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.

[0032] Reference Figure 3 , Figure 4 and Figure 5This utility model provides an embodiment of a wide-load denitrification synergistic control device for a double-row smoke intake bypass flue, including a main pipeline 1. An adjustment mechanism 2 is installed on the outer side of the main pipeline 1 to control the smoke intake volume. A stirring mechanism 3 is installed in the middle of the main pipeline 1 to stir flue gas at different temperatures. The adjustment mechanism 2 includes multiple baffles 201, all installed on the outer side of the main pipeline 1. Buffer arc plates 202 are slidably connected to the upper and lower ends of each baffle 201. A rotating column 203 is fixedly connected to the middle of each baffle 201. A drive assembly 204 is installed at the top outer side of each baffle 201. The drive assembly 204 includes... The system includes a servo motor 2041, with multiple sprockets 2042 mounted on the outer bottom end of the servo motor 2041. The output end of the servo motor 2041 is fixedly connected to the top of the outer wall of the sprockets 2042. A chain 2043 is mounted on the outer wall of the sprockets 2042. The outer walls of the multiple sprockets 2042 are all meshed with the inside of the chain 2043. A worm gear 2044 is fixedly connected to the bottom of the outer wall of the multiple sprockets 2042. A worm wheel 2045 is mounted on the front side of the outer wall of the worm gear 2044. The front side of the outer wall of the worm gear 2044 is meshed with the rear side of the outer wall of the worm wheel 2045. A support frame 2046 is fixedly connected to the outer wall of the servo motor 2041.

[0033] Specifically, when the servo motor 2041 is turned on, its output can drive the sprocket 2042 to rotate. Under the transmission action of the chain 2043, the two sprockets 2042 rotate synchronously, which in turn drives the worm 2044 at the bottom of the sprocket 2042 to rotate together with the sprocket 2042. When the worm 2044 rotates, through its meshing with the worm wheel 2045, it can drive the worm wheel 2045 to rotate, which in turn causes the rotating column 203 in the middle of the baffle 201 to rotate, realizing the angle adjustment of the baffle 201. The buffer arc plates 202 at the upper and lower ends of the baffle 201 slide on its surface, which can slow down the rotation. To reduce the impact force during the adjustment process and minimize direct collisions between components, the buffer arc plate 202 is connected to the baffle 201 via multiple springs. When the baffle 201 approaches a vertical angle, the multiple springs can elastically compress the buffer arc plate 202, enhancing the fit between the baffle 201 and the contact area. This ensures that the baffle 201 maintains good sealing when vertical. The support frame 2046 is fixed to the mounting base, providing support for the servo motor 2041, reducing shaking during operation, and ensuring accurate and reliable adjustment of the baffle 201 angle. This allows for control of the smoke intake by changing the opening and closing degree of the channel.

[0034] Reference Figure 1 , Figure 3 and Figure 6The stirring mechanism 3 includes a support plate 301, which is installed in the middle of the main pipeline 1. A rotating shaft 302 is rotatably connected to the top of the support plate 301. A fan blade 303 is fixedly connected to the front end of the outer wall of the rotating shaft 302. A power assembly 304 is installed on the outer side of the support plate 301. The power assembly 304 includes a second servo motor 3041. A transmission shaft 3042 is fixedly connected to the output end of the second servo motor 3041. The outer wall of the transmission shaft 3042 is rotatably connected to the outer wall of the main pipeline 1. A helical gear 3043 is fixedly connected to the middle of the outer wall of the drive shaft 3042. A helical gear 3044 is installed on the left side of the outer wall of the helical gear 3043. The middle of the helical gear 3044 is fixedly connected to the outer wall of the shaft 302. The left side of the outer wall of the helical gear 3043 meshes with the right side of the outer wall of the helical gear 3044. A support frame 3045 is fixedly connected to the outer wall of the servo motor 3041. The bottom end of the outer wall of the support frame 3045 is fixedly connected to the top of the outer wall of the main pipeline 1.

[0035] Specifically, when servo motor 2 3041 is turned on, its output can drive transmission shaft 3042 to rotate, providing the source power for subsequent power transmission. This causes helical gear 1 3043 welded to the outer wall of transmission shaft 3042 to rotate. Through the meshing of helical gear 1 3043 and helical gear 2 3044, power is transmitted to helical gear 2 3044, thereby driving helical gear 2 3044 to rotate. This, in turn, causes the rotating shaft 302 at the top of support plate 301 to rotate. The fan blade 303 at the front end of the outer wall of rotating shaft 302 rotates together with rotating shaft 302. During the rotation of the fan blade 303, the static state of the flue gas in the main pipeline 1 is broken, and the flue gas at different temperatures in the main pipeline 1 is stirred, accelerating the mixing of the flue gas and making the temperature distribution of the flue gas more uniform. The support frame 3045 is fixed to the installation base, which supports the servo motor 3041, reduces the vibration of the servo motor 3041 during operation, ensures the stable transmission of power from the servo motor 3041 to the fan blade 303, ensures the continuous and efficient rotation of the fan blade 303, improves the flue gas mixing effect, and ensures the smooth progress of the flue gas treatment process.

[0036] Reference Figure 1 , Figure 2 and Figure 3A connecting channel 4 is fixedly connected to the middle of the main channel 1. Side smoke pipes 5 are fixedly connected to the left and right ends of the outer wall of the connecting channel 4. The bottom end of the outer wall of the support frame 2046 is fixedly connected to the top end of the outer wall of the side smoke pipe 5. A protective cover 6 is fixedly connected to the top end of the outer wall of the main channel 1. A chain 2043 is installed inside the protective cover 6. Smoke extraction pipes 7 are installed at the front end of the outer wall of multiple side smoke pipes 5. A wind horn 8 is fixedly connected to the bottom end of the outer wall of multiple smoke extraction pipes 7 for absorbing smoke from different locations. A fixing plate 9 is fixedly connected to the front end of the outer wall of the side smoke pipe 5. A fixing plate 9 is fixedly connected to the rear end of the outer wall of the smoke extraction pipe 7. Bolts 10 are installed at the four corners of multiple fixing plates 9 to fix the side smoke pipes 5 and the smoke extraction pipes 7.

[0037] Specifically, a connecting channel 4 is fixedly connected to the middle of the main pipeline 1, which connects the main pipeline 1 to the side flue pipe 5, forming a channel for flue gas flow. Multiple side flue pipes 5 are welded to the outer wall of the connecting channel 4, allowing flue gas to be diverted and transmitted through the side flue pipes 5. The bottom of the outer wall of the support frame 2046 is welded to the top of the outer wall of the side flue pipe 5, providing a stable installation support for the support frame 2046. A protective cover 6 is fixedly connected to the top of the outer wall of the main pipeline 1, which can protect the internal components. The chain 2043 is installed inside the protective cover 6 to prevent the chain 2043 from being exposed to the outside and affected by the outside. Smoke extraction pipes 7 are installed on the outside of the multiple side flue pipes 5. The smoke extraction pipes 7 extend to different flue gas generation points and can draw in flue gas from different locations through the wind horn 8, expanding the smoke extraction range. Fixing plates 9 are welded to the outer walls of both the side flue pipes 5 and the smoke extraction pipes 7. The side flue pipes 5 and the smoke extraction pipes 7 are fixed by bolts 10 to ensure a tight connection and prevent flue gas leakage. All components cooperate with each other to ensure the stable operation of the flue gas transmission system.

[0038] Working principle: When the servo motor 2041 is turned on, its output can drive the sprocket 2042 to rotate. Under the transmission action of the chain 2043, the two sprockets 2042 rotate synchronously, which in turn drives the worm 2044 at the bottom of the sprocket 2042 to rotate together with the sprocket 2042. When the worm 2044 rotates, through its interaction with the worm wheel 2045, it can drive the worm wheel 2045 to rotate, which in turn causes the rotating column 203 in the middle of the baffle 201 to rotate, thus achieving the angle of the baffle 201. The baffle 201 is adjusted in angle. The buffer arc plate 202 at the upper and lower ends slides to buffer the impact force during the adjustment process. The buffer arc plate 202 is connected to the baffle 201 by multiple springs. When the baffle 201 approaches the vertical angle, the multiple springs can elastically compress the buffer arc plate 202 to make the baffle 201 maintain good sealing when it is vertical. The support frame 2046 supports the servo motor 2041 to ensure that the angle adjustment of the baffle 201 is accurate and reliable, thereby controlling the amount of smoke taken out.

[0039] When the servo motor 3041 is turned on, its output can drive the transmission shaft 3042 to rotate, which in turn causes the helical gear 3043 welded to the outer wall of the transmission shaft 3042 to rotate. Through the meshing of the helical gear 3043 and the helical gear 3044, the helical gear 3044 is driven to rotate, which in turn causes the shaft 302 at the top of the support plate 301 to rotate. The fan blade 303 at the front end of the outer wall of the shaft 302 rotates together with the shaft 302. During the rotation of the fan blade 303, the flue gas at different temperatures in the main pipeline 1 is stirred, which accelerates the mixing of the flue gas. The support frame 3045 supports the servo motor 3041, ensuring stable power transmission and ensuring that the fan blade 303 rotates continuously and efficiently, thereby improving the mixing effect of the flue gas.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wide-load denitrification synergistic control device for a double-row smoke intake bypass flue, comprising a main pipeline (1), characterized in that: An adjustment mechanism (2) is installed on the outside of the main pipeline (1). The adjustment mechanism (2) is used to control the amount of smoke taken out. A stirring mechanism (3) is installed in the middle of the main pipeline (1). The stirring mechanism (3) is used to stir the flue gas at different temperatures. The adjustment mechanism (2) includes multiple baffles (201), all of which are installed on the outside of the main pipeline (1). The upper and lower ends of each baffle (201) are slidably connected to a buffer arc plate (202). A rotating column (203) is fixedly connected to the middle of each baffle (201). A drive assembly (204) is installed on the top of the outer side of each baffle (201).

2. The wide-load denitrification synergistic control device for a double-row smoke intake bypass flue according to claim 1, characterized in that: The drive assembly (204) includes a servo motor (2041), a plurality of sprockets (2042) are mounted on the outer bottom end of the servo motor (2041), the output end of the servo motor (2041) is fixedly connected to the top of the outer wall of the sprocket (2042), a chain (2043) is mounted on the outer wall of the sprocket (2042), the outer walls of the plurality of sprockets (2042) are all meshed with the inside of the chain (2043), a worm (2044) is fixedly connected to the bottom of the outer wall of the plurality of sprockets (2042), a worm wheel (2045) is mounted on the front side of the outer wall of the worm (2044), the front side of the outer wall of the worm (2044) is meshed with the rear side of the outer wall of the worm wheel (2045), and a support frame (2046) is fixedly connected to the outer wall of the servo motor (2041).

3. The wide-load denitrification synergistic control device for a double-row smoke intake bypass flue according to claim 1, characterized in that: The stirring mechanism (3) includes a support plate (301), which is installed in the middle of the main pipeline (1). A rotating shaft (302) is rotatably connected to the top of the support plate (301). A fan blade (303) is fixedly connected to the front end of the outer wall of the rotating shaft (302). A power assembly (304) is installed on the outside of the support plate (301).

4. The wide-load denitrification synergistic control device for a double-row smoke intake bypass flue according to claim 3, characterized in that: The power assembly (304) includes a second servo motor (3041), the output end of which is fixedly connected to a drive shaft (3042). The outer wall of the drive shaft (3042) is rotatably connected to the outer wall of the main pipeline (1). A first helical gear (3043) is fixedly connected to the middle of the outer wall of the drive shaft (3042). A second helical gear (3044) is installed on the left side of the outer wall of the first helical gear (3043). The middle of the second helical gear (3044) is fixedly connected to the outer wall of the rotating shaft (302). The left side of the outer wall of the first helical gear (3043) meshes with the right side of the outer wall of the second helical gear (3044). A second support frame (3045) is fixedly connected to the outer wall of the second servo motor (3041). The bottom end of the outer wall of the second support frame (3045) is fixedly connected to the top of the outer wall of the main pipeline (1).

5. The wide-load denitrification synergistic control device for a double-row smoke intake bypass flue according to claim 2, characterized in that: The main pipeline (1) is fixedly connected to a connecting channel (4) in the middle. The left and right ends of the outer wall of the connecting channel (4) are fixedly connected to side smoke pipes (5). The bottom end of the outer wall of the support frame (2046) is fixedly connected to the top of the outer wall of the side smoke pipe (5).

6. The wide-load denitrification synergistic control device for a double-row smoke intake bypass flue according to claim 2, characterized in that: A protective cover (6) is fixedly connected to the top of the outer wall of the main pipeline (1), and the chain (2043) is installed inside the protective cover (6).

7. The wide-load denitrification synergistic control device for a double-row smoke intake bypass flue according to claim 5, characterized in that: Each of the multiple side smoke pipes (5) has a smoke extraction pipe (7) installed at the front end of its outer wall, and each of the multiple smoke extraction pipes (7) has a wind horn (8) fixedly connected to its bottom end.

8. The wide-load denitrification synergistic control device for a double-row smoke intake bypass flue according to claim 7, characterized in that: A fixing plate (9) is fixedly connected to the front end of the outer wall of the side smoke pipe (5), and a fixing plate (9) is fixedly connected to the rear end of the outer wall of the smoke extraction pipe (7). Bolts (10) are installed at the four corners of the multiple fixing plates (9).

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