Deflector assembly for preventing ash deposition in tail flue of coal-fired boiler

Abstract

The utility model relates to the technical field of guide plate assemblies, and discloses a coal-fired boiler tail flue ash deposition prevention guide plate assembly which comprises a pipeline, the front side of the outer wall of the pipeline is fixedly connected with a protective shell, the inner wall of the pipeline is provided with an ash removal mechanism used for cleaning, the top of the pipeline is fixedly connected with a plurality of U-shaped seats, and the U-shaped seats are fixedly connected with the protective shell. A flow equalizing mechanism is arranged on the inner wall of the pipeline; the flow equalizing mechanism comprises a flow equalizing cover, the outer wall of the flow equalizing cover is slidably connected with the inner wall of the pipeline, and clamping blocks are fixedly connected to the left side and the right side of the top of the flow equalizing cover. According to the device, the flow equalizing cover is promoted to move downwards by means of the clamping block, the clamping block is matched with the wedge-shaped block, so that the short columns on the two sides are compressed, the spring is shrunk, when the clamping block reaches the bottom of the wedge-shaped block, the spring restores to the initial length, the clamping block is clamped, the first motor is started, the rotating plate rotates synchronously, and the functions of facilitating installation and adjusting the discharge amount are achieved. And the practicability is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of guide vane assemblies, and in particular to a guide vane assembly for preventing ash accumulation in the tail flue of a coal-fired boiler. Background Technology

[0002] In the field of energy production, coal-fired boilers, as common energy conversion equipment, play a crucial role. Their tail flue, as a key channel for flue gas discharge, is of great significance to the stable operation and efficiency improvement of the entire boiler system. The tail flue of a coal-fired boiler is an important part connecting the boiler body and subsequent flue gas treatment equipment. Its main function is to guide the orderly flow of high-temperature flue gas and complete heat exchange during the flow process, reduce the flue gas temperature, and prepare for subsequent treatment. Since the flue gas produced by coal combustion carries a large number of fly ash particles, ash accumulation is very likely to occur in the complex flow field environment of the tail flue.

[0003] To address the problem of ash accumulation, anti-ash-accumulation guide plate assemblies for the tail flue of coal-fired boilers have emerged. These assemblies typically consist of multiple guide plates and corresponding fixed support structures, and are installed at specific locations inside the flue. While traditional guide plate assemblies have guided flue gas flow to some extent and reduced ash accumulation in some areas, they still have many drawbacks. Conventional straight-plate guide plates cannot effectively adapt to the inertia and complex flow direction of flue gas at flue bends, resulting in excessively low flue gas velocity and severe ash accumulation in some areas. To overcome this drawback, existing technologies have adopted structures such as arc-shaped guide plates and combined guide plates. By optimizing the shape and layout of the guide plates, the flue gas velocity distribution is made more uniform, reducing ash accumulation. However, existing technologies cannot adjust the angle of the guide plates, nor can they adjust the emission volume according to requirements, resulting in low practicality. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a guide plate assembly for preventing ash accumulation in the tail flue of a coal-fired boiler, aiming to improve the problems of existing technologies that cannot adjust the angle of the guide plate, cannot adjust the emission volume according to needs, and have low practicality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a flue gas duct anti-ash accumulation guide plate assembly for a coal-fired boiler, including a pipe, a protective shell fixedly connected to the front side of the outer wall of the pipe, an ash cleaning mechanism provided on the inner wall of the pipe for cleaning, a plurality of U-shaped seats fixedly connected to the top of the pipe, and a flow equalization mechanism provided on the inner wall of the pipe.

[0006] The flow equalization mechanism includes a flow equalization hood, the outer wall of which is slidably connected to the inner wall of the pipe, and a locking block is fixedly connected to the top left and right sides of the flow equalization hood. A wedge-shaped component is provided on the outer wall of the right-side locking block, and a driving component is provided on the inner wall of the protective shell.

[0007] As a further description of the above technical solution:

[0008] The dust removal mechanism includes multiple long shafts. The outer wall of the long shaft is fixedly connected to the inner wall of the pipe. A protective cover is fixedly connected to the inner wall of the long shaft. A second motor is fixedly connected to the bottom of the inner wall of the protective cover. A connecting column is fixedly connected to the output end of the second motor. A dust scraping component is provided on the outer wall of the connecting column. A dust suction component is provided on the outer wall of the connecting column.

[0009] As a further description of the above technical solution:

[0010] The wedge assembly includes multiple wedge blocks, the outer wall of each wedge block is slidably connected to the outer wall of the locking block, and short columns are fixedly connected to the front and rear sides of each wedge block, with elastic components provided on the outer walls of the short columns.

[0011] As a further description of the above technical solution:

[0012] The elastic component includes a hollow column, the inner wall of which is slidably connected to the outer wall of a short column, and a spring is fixedly connected to the inner wall of the hollow column.

[0013] As a further description of the above technical solution:

[0014] The drive assembly includes a motor, the rear side of which is fixedly connected to the inner wall of the protective shell, and a connecting shaft is fixedly connected to the output end of the motor. A rotating assembly is provided on the outer wall of the connecting shaft.

[0015] As a further description of the above technical solution:

[0016] The rotating assembly includes a rotating plate, the outer wall of which is fixedly connected to the outer wall of the connecting shaft, and a connecting shaft is fixedly connected to the inner wall of the rotating plate.

[0017] As a further description of the above technical solution:

[0018] The scraping assembly includes short shafts, with one adjacent side of each short shaft fixedly connected to the outer wall of a connecting column, and a scraper fixedly connected to the outer wall of each short shaft.

[0019] As a further description of the above technical solution:

[0020] The dust collection assembly includes a short column, the inner wall of which is fixedly connected to the outer wall of the connecting column, and a plurality of dust collection balls are fixedly connected to the outer wall of the short column.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, a locking block is used to move the flow equalization shroud downwards. The locking block engages with the wedge-shaped block, thereby compressing the short columns on both sides and causing the spring to contract. When the locking block reaches the bottom of the wedge-shaped block, the spring returns to its initial length, locking the locking block in place. This starts the first motor, causing the first motor to drive the connecting shaft to rotate, making the rotating plate rotate synchronously. This achieves the function of facilitating installation and adjustment of the discharge volume, thus improving practicality.

[0023] 2. In this utility model, by turning on the second motor, the connecting column is rotated, causing the scraper to rotate simultaneously, thus cleaning the dust on the surface of the rotating plate. At the same time, the short column drives the suction ball to rotate, which can absorb dust, achieving the effect of cleaning the guide plate, thereby enhancing its practicality. Attached Figure Description

[0024] Figure 1 This is a perspective view of the front side of the pipe of the anti-ash accumulation guide plate assembly for the tail flue of a coal-fired boiler proposed in this utility model.

[0025] Figure 2 This is a partial structural disassembly diagram of the U-shaped seat of the anti-ash accumulation guide plate assembly for the tail flue of a coal-fired boiler proposed in this utility model.

[0026] Figure 3 This is a partial structural diagram of the locking block of the anti-ash accumulation guide plate assembly for the tail flue of a coal-fired boiler proposed in this utility model.

[0027] Figure 4 This is a partial structural diagram of the spring in the anti-ash accumulation guide plate assembly for the tail flue of a coal-fired boiler proposed in this utility model.

[0028] Figure 5 This is a partial structural diagram of the long axis of the anti-ash accumulation guide plate assembly for the tail flue of a coal-fired boiler proposed in this utility model.

[0029] Legend:

[0030] 1. Pipeline; 2. Flow equalization mechanism; 201. Flow equalization hood; 202. Clamping block; 203. Wedge assembly; 2031. Wedge block; 2032. Short column; 204. Elastic assembly; 2041. Spring; 2042. Hollow column; 205. Drive assembly; 2051. Motor 1; 2052. Connecting shaft; 206. Rotating assembly; 2061. Rotating plate; 2062. Linking shaft; 3. Dust removal mechanism; 301. Long shaft; 302. Protective cover; 303. Motor 2; 304. Connecting column; 305. Dust scraping assembly; 3051. Short shaft; 3052. Scraper; 306. Dust collection assembly; 3061. Short column; 3062. Dust collection ball; 4. Protective shell; 5. U-shaped seat. 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] Please see the appendix Figure 1 - Appendix Figure 3 An embodiment of this utility model provides: a guide plate assembly for preventing ash accumulation in the tail flue of a coal-fired boiler, including a pipe 1, a protective shell 4 fixedly connected to the front side of the outer wall of the pipe 1, a plurality of U-shaped seats 5 fixedly connected to the top of the pipe 1, an ash cleaning mechanism 3 provided on the inner wall of the pipe 1 for cleaning, and a flow equalization mechanism 2 provided on the inner wall of the pipe 1 for uniformly distributing the flue gas entering the pipe 1 and improving the stability of the flue gas flow.

[0033] The flow equalization mechanism 2 includes a flow equalization hood 201. The outer wall of the flow equalization hood 201 is slidably connected to the inner wall of the pipe 1. The top left and right sides of the flow equalization hood 201 are fixedly connected with a locking block 202, which is used to cooperate with the wedge component 203 to realize the positioning of the flow equalization hood 201. The outer wall of the right locking block 202 is provided with the wedge component 203, and the inner wall of the protective shell 4 is provided with the driving component 205.

[0034] Specifically, the pipe 1 serves as the flow channel for the entire assembly. A protective shell 4 is fixedly connected to the front of its outer wall to protect the internal structure. Multiple U-shaped seats 5 are fixedly connected to the top of the pipe 1 to facilitate installation and fixation with other components. The flow equalization mechanism 2 includes a flow equalization hood 201. The outer wall of the flow equalization hood 201 is slidably connected to the inner wall of the pipe 1, allowing it to move up and down to adjust the flow equalization effect. A wedge-shaped component 203 is provided on the outer wall of the right-side locking block 202 to lock the locking block 202 and fix the flow equalization hood 201. A drive component 205 is provided on the inner wall of the protective shell 4 to provide power for the movement of the flow equalization hood 201.

[0035] Please see the appendix Figure 3 - Appendix Figure 5The dust removal mechanism 3 includes multiple long shafts 301. The outer wall of each long shaft 301 is fixedly connected to the inner wall of the pipe 1. A protective cover 302 is fixedly connected to the inner wall of each long shaft 301 to protect the second motor 303. The bottom of the inner wall of the protective cover 302 is fixedly connected to the second motor 303. A connecting post 304 is fixedly connected to the output end of the second motor 303. A dust scraping component 305 is provided on the outer wall of the connecting post 304. A dust suction component 306 is provided on the outer wall of the connecting post 304. The dust scraping component 305 includes a short shaft 305. 1. Multiple short shafts 3051 are fixedly connected to the outer wall of the connecting column 304 on one side. A scraper 3052 is fixedly connected to the outer wall of the short shaft 3051. When the scraper 3052 rotates, it can scrape off the dust on the inner wall of the pipe 1 and the guide plate. The dust collection assembly 306 includes a short column 3061. The inner wall of the short column 3061 is fixedly connected to the outer wall of the connecting column 304. Multiple dust collection balls 3062 are fixedly connected to the outer wall of the short column 3061. The dust collection balls 3062 can absorb dust and further clean the pipe 1.

[0036] Specifically, the function of the dust removal mechanism 3 is to remove dust from the inner wall of the pipe 1 and the guide plate, preventing dust accumulation from affecting the flue gas flow and guiding effect. The dust removal mechanism 3 includes multiple long shafts 301. The outer wall of the long shafts 301 is fixedly connected to the inner wall of the pipe 1, which serves to support and fix the dust removal mechanism 3. The bottom of the inner wall of the protective cover 302 is fixedly connected to a motor 303, which provides power for the dust removal action. The output end of the motor 303 is fixedly connected to a connecting column 304. The outer wall of the connecting column 304 is provided with a dust scraping component 305 and a dust suction component 306, which are used to scrape off dust and absorb dust, respectively. The dust scraping component 305 includes a short shaft 3051. The adjacent side of multiple short shafts 3051 is fixedly connected to the outer wall of the connecting column 304. The outer wall of the short shaft 3051 is fixedly connected to a scraper 3052. The dust suction component 306 includes a short column 3061. The inner wall of the short column 3061 is fixedly connected to the outer wall of the connecting column 304.

[0037] Please see the appendix Figure 2 - Appendix Figure 4 The wedge assembly 203 includes a plurality of wedge blocks 2031. The outer wall of the wedge block 2031 is slidably connected to the outer wall of the locking block 202. Short columns 2032 are fixedly connected to the front and rear sides of the wedge block 2031. An elastic component 204 is provided on the outer wall of the short column 2032. The elastic component 204 includes a hollow column 2042. The inner wall of the hollow column 2042 is slidably connected to the outer wall of the short column 2032. A spring 2041 is fixedly connected to the inner wall of the hollow column 2042.

[0038] Specifically, the wedge component 203 works in conjunction with the locking block 202 to fix the flow equalization shield 201. The wedge component 203 includes multiple wedge blocks 2031. The outer wall of the wedge block 2031 is slidably connected to the outer wall of the locking block 202, and the locking is achieved through the wedge structure. The outer wall of the short column 2032 is provided with an elastic component 204. The elastic component 204 includes a hollow column 2042. The inner wall of the hollow column 2042 is slidably connected to the outer wall of the short column 2032. A spring 2041 is fixedly connected to the inner wall of the hollow column 2042. The spring 2041 is compressed when the locking block 202 moves. When the locking block 202 is in place, the spring 2041 returns to its original state, locking the locking block 202 and fixing the flow equalization shield 201.

[0039] Please see the appendix Figure 2 - Appendix Figure 4 The drive assembly 205 includes a motor 2051, the rear side of which is fixedly connected to the inner wall of the protective shell 4. The output end of the motor 2051 is fixedly connected to a connecting shaft 2052. A rotating assembly 206 is provided on the outer wall of the connecting shaft 2052. The rotating assembly 206 includes a rotating plate 2061, the outer wall of which is fixedly connected to the outer wall of the connecting shaft 2052. A connecting shaft 2062 is fixedly connected to the inner wall of the rotating plate 2061.

[0040] Specifically, the driving component 205 provides power for the movement of the flow equalization hood 201. The driving component 205 includes a motor 2051, the rear side of which is fixedly connected to the inner wall of the protective shell 4. The output end of the motor 2051 is fixedly connected to a connecting shaft 2052. A rotating component 206 is provided on the outer wall of the connecting shaft 2052. The rotating component 206 includes a rotating plate 2061, the outer wall of which is fixedly connected to the outer wall of the connecting shaft 2052. A connecting shaft 2062 is fixedly connected to the inner wall of the rotating plate 2061. The motor 2051 drives the connecting shaft 2052 to rotate, thereby driving the rotating plate 2061 to rotate. The movement of the flow equalization hood 201 is realized through the connecting shaft 2062 and other structures.

[0041] Working principle: The clamping block 202 drives the flow equalization shroud 201 to move downward. The clamping block 202 engages with the wedge block 2031, compressing the short columns 2032 on both sides and causing the spring 2041 to contract. When the clamping block 202 reaches the bottom of the wedge block 2031, the spring 2041 returns to its original state, locking the clamping block 202 in place. This activates the motor 2051, causing multiple connecting shafts 2052 to rotate, which in turn rotates the rotating plate 2061 simultaneously. This achieves the function of facilitating installation and adjusting the discharge volume, enhancing practicality.

[0042] By turning on motor 303, the connecting column 304 is rotated, causing scraper 3052 to rotate simultaneously, cleaning the dust on the surface of rotating plate 2061. At the same time, short column 3061 drives suction ball 3062 to rotate, which can absorb dust, thus achieving the function of cleaning the guide plate and enhancing its practicality.

[0043] 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 flue gas duct anti-ash accumulation guide plate assembly for a coal-fired boiler, comprising a pipe (1), characterized in that: A protective shell (4) is fixedly connected to the front side of the outer wall of the pipe (1), and a plurality of U-shaped seats (5) are fixedly connected to the top of the pipe (1). A dust removal mechanism (3) is provided on the inner wall of the pipe (1). The dust removal mechanism (3) is used for cleaning. A flow equalization mechanism (2) is provided on the inner wall of the pipe (1). The flow equalization mechanism (2) includes a flow equalization hood (201), the outer wall of the flow equalization hood (201) is slidably connected to the inner wall of the pipe (1), and the top left and right sides of the flow equalization hood (201) are fixedly connected with a locking block (202). The outer wall of the locking block (202) on the right side is provided with a wedge-shaped component (203), and the inner wall of the protective shell (4) is provided with a driving component (205).

2. The anti-ash accumulation guide plate assembly for the tail flue of a coal-fired boiler according to claim 1, characterized in that: The dust removal mechanism (3) includes multiple long shafts (301). The outer wall of the long shaft (301) is fixedly connected to the inner wall of the pipe (1). A protective cover (302) is fixedly connected to the inner wall of the long shaft (301). A motor (303) is fixedly connected to the bottom of the inner wall of the protective cover (302). A connecting column (304) is fixedly connected to the output end of the motor (303). A dust scraping component (305) is provided on the outer wall of the connecting column (304). A dust suction component (306) is provided on the outer wall of the connecting column (304).

3. The anti-ash accumulation guide plate assembly for the tail flue of a coal-fired boiler according to claim 1, characterized in that: The wedge assembly (203) includes a plurality of wedge blocks (2031), the outer wall of the wedge block (2031) is slidably connected to the outer wall of the locking block (202), and short columns (2032) are fixedly connected to the front and rear sides of the wedge block (2031), and elastic components (204) are provided on the outer wall of the short columns (2032).

4. The anti-ash accumulation guide plate assembly for the tail flue of a coal-fired boiler according to claim 3, characterized in that: The elastic component (204) includes a hollow column (2042), the inner wall of which is slidably connected to the outer wall of a short column (2032), and a spring (2041) is fixedly connected to the inner wall of the hollow column (2042).

5. The anti-ash accumulation guide plate assembly for the tail flue of a coal-fired boiler according to claim 1, characterized in that: The drive assembly (205) includes a motor (2051), the rear side of which is fixedly connected to the inner wall of the protective shell (4), and the output end of the motor (2051) is fixedly connected to a connecting shaft (2052). The outer wall of the connecting shaft (2052) is provided with a rotating assembly (206).

6. The anti-ash accumulation guide plate assembly for the tail flue of a coal-fired boiler according to claim 5, characterized in that: The rotating assembly (206) includes a rotating plate (2061), the outer wall of which is fixedly connected to the outer wall of the connecting shaft (2052), and the inner wall of which is fixedly connected to the connecting shaft (2062).

7. The anti-ash accumulation guide plate assembly for the tail flue of a coal-fired boiler according to claim 2, characterized in that: The scraping assembly (305) includes a short shaft (3051), and one adjacent side of a plurality of the short shafts (3051) is fixedly connected to the outer wall of the connecting column (304). A scraper (3052) is fixedly connected to the outer wall of the short shaft (3051).

8. The anti-ash accumulation guide plate assembly for the tail flue of a coal-fired boiler according to claim 2, characterized in that: The vacuuming assembly (306) includes a short column (3061), the inner wall of which is fixedly connected to the outer wall of the connecting column (304), and a plurality of vacuum balls (3062) are fixedly connected to the outer wall of the short column (3061).

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