A soot cleaning device for a boiler of a steam turbine in a thermal power plant

Abstract

The utility model relates to the technical field of boiler ash removal, particularly relates to a kind of ash removal device for steam turbine boiler of thermal power plant, comprising: mobile pedestal, bottom end is provided with foma wheel group, mobile pedestal is provided with U-shaped structure;Mounting box is mounted on mobile pedestal, driving shaft is rotatably installed in the shaft hole of mounting box, and swing arm is fixedly installed on driving shaft;Threaded rod is installed on swing arm by transmission mechanism, and mounting table for dust suction mechanism installation is installed at the bottom of threaded rod, and transmission mechanism is used to provide lifting power to threaded rod;Driving mechanism is installed at the top of threaded rod, and driving mechanism is used to increase the working area of dust suction mechanism;Adjusting mechanism is installed in mounting box, and adjusting mechanism is used to drive swing arm on driving shaft to carry out angle adjustment;It improves site adaptability, increases ash removal efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of boiler ash removal, and in particular to an ash removal device for steam turbine boilers in thermal power plants. Background Technology

[0002] In thermal power plants, steam turbine boilers are key equipment that converts the heat energy generated by fuel combustion into mechanical energy for power generation. However, during long-term operation, a large amount of soot gradually accumulates on the boiler's heating surfaces and inside the flue. This soot not only reduces the boiler's thermal efficiency but may also cause equipment failure or safety accidents. Therefore, regular cleaning of the boiler's interior is crucial. Traditional cleaning methods mainly rely on manual sweeping or simple mechanical devices, which suffer from low efficiency, incomplete cleaning, and high health risks to operators.

[0003] In recent years, with technological advancements, some automated ash removal devices have begun to be applied in power plant maintenance. For example, patent CN216521732U discloses an ash removal device for steam turbine boilers in thermal power plants. By combining a dust collection mechanism with a brush, it effectively improves ash removal efficiency and protects the health of operators. However, this device still suffers from fixed installation locations and inconvenient equipment movement, which limits its ability to quickly switch work positions between different boilers and affects overall operational efficiency. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this utility model provides a ash removal device for steam turbine boilers in thermal power plants.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model discloses a soot removal device for a steam turbine boiler in a thermal power plant, comprising:

[0007] The mobile base is equipped with a set of caster wheels at the bottom and has a U-shaped structure.

[0008] The mounting box is installed on the mobile base. A drive shaft is rotatably installed in the shaft hole of the mounting box, and a swing arm is fixedly installed on the drive shaft.

[0009] The threaded rod is mounted on the swing arm via a transmission mechanism. A mounting platform for the dust collection mechanism is installed at the bottom of the threaded rod. The transmission mechanism provides lifting power to the threaded rod.

[0010] The drive mechanism, mounted on the top of the threaded rod, is used to increase the working area of ​​the vacuuming mechanism.

[0011] The adjustment mechanism, installed inside the mounting box, is used to drive the swing arm on the drive shaft to adjust the angle.

[0012] Furthermore, the transmission mechanism includes:

[0013] The mounting shaft is fixedly installed in the through hole of the swing arm. A guide is provided inside the mounting shaft, and the guide is slidably connected to the guide groove on the threaded rod.

[0014] A threaded tube is rotatably installed in the through hole of the swing arm, and the threaded tube is connected to the threaded rod.

[0015] The drive shaft is rotatably mounted inside the shaft cavity of the drive shaft. Both the drive shaft and the threaded tube are equipped with pulleys, and the two pulleys are connected by a drive belt.

[0016] The power mechanism, installed inside the mounting box, is used to provide rotational power to the drive shaft.

[0017] Furthermore, the power mechanism includes:

[0018] The power motor is installed inside the mounting box, and the first gear is coaxially mounted on the output end of the power motor;

[0019] The second gear is coaxially mounted on the drive shaft and meshes with the first gear.

[0020] Furthermore, the vacuuming mechanism includes:

[0021] Vacuum cleaner, mounted on the mounting platform;

[0022] The connecting pipe is fixedly installed on the mounting platform. An adapter pipe is rotatably installed on the connecting pipe. Multiple dust suction nozzles are evenly spaced along the length of the adapter pipe. The adapter pipe is connected to the drive mechanism.

[0023] The connecting tube is connected to both the input end of the vacuum cleaner and the inner hole of the connecting tube.

[0024] Two cleaning units are installed at each end of the transfer pipe.

[0025] Furthermore, cleaning agencies include:

[0026] A movable component is slidably mounted on the adapter pipe, and a brush is mounted on the movable component;

[0027] A threaded post is mounted on a moving part and passes through a long slot in the moving part. Fasteners are mounted on the threaded post.

[0028] Furthermore, the drive mechanism includes:

[0029] The drive motor is mounted on the threaded rod via a support frame.

[0030] The adapter shaft is rotatably installed in the inner cavity of the threaded rod. One end of the adapter shaft is connected to the output end of the drive motor, and the other end is connected to the adapter tube.

[0031] Furthermore, the regulatory body includes:

[0032] The brake motor is installed inside the mounting box, and a third gear is installed at the output end of the brake motor;

[0033] The fourth gear is coaxially mounted on the drive shaft and meshes with the third gear.

[0034] Furthermore, an auxiliary handle is provided on the mobile base.

[0035] The ash removal device for steam turbine boilers in thermal power plants provided by this utility model, as described above, has the following beneficial effects:

[0036] The fuma wheels at the bottom of the mobile base enable flexible movement of the entire device, facilitating quick switching between different boilers. The locking function of the fuma wheels also stabilizes the device, ensuring stability during ash removal operations. The mobile base provides a solid foundation for the mounting box, ensuring secure installation of all components. The rotating drive shaft inside the mounting box, in conjunction with the swing arm, allows for angle adjustment via an adjustment mechanism. This facilitates the quick removal of components such as the dust collection mechanism from the boiler when not in ash removal mode. The threaded rod, through a transmission mechanism, raises and lowers the mounting platform and dust collection mechanism, allowing for flexible height adjustment to bring the dust collection mechanism closer to the lower inner wall of the boiler. The drive mechanism increases the working area of ​​the dust collection mechanism, further improving ash removal efficiency and achieving a wide ash removal range, convenient movement, and strong adaptability. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the embodiments will be briefly described below.

[0038] Figure 1 This is a schematic diagram of the axonal structure of this utility model;

[0039] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0040] Figure 3 This is a schematic diagram of the adjustment mechanism structure of this utility model;

[0041] Figure 4 This is an exploded structural diagram of the drive mechanism of this utility model;

[0042] Figure 5 This is a schematic diagram of the cleaning mechanism structure of this utility model;

[0043] Figure 6 This is a schematic diagram of the mounting shaft structure of this utility model;

[0044] The attached diagram shows the following markings: 1. Movable base; 2. Fomas wheel set; 3. Mounting box; 4. Drive shaft; 5. Swing arm; 6. Threaded rod; 7. Transmission mechanism; 7a. Mounting shaft; 7b. Guide component; 7c. Threaded pipe; 7d. Drive shaft; 7e. Pulley; 7f. Drive belt; 7g. Power mechanism; 7g1. Power motor; 7g2. First gear; 7g3. Second gear; 8. Vacuuming mechanism; 8a. Vacuum cleaner; 8b. Connecting pipe; 8c. Adapter pipe; 8d. Vacuum nozzle; 8e. Connecting pipe; 8f. Cleaning mechanism; 8f1. Movable component; 8f2. Brush; 8f3. Threaded column; 8f4. Fastener; 9. Mounting platform; 10. Drive mechanism; 10a. Drive motor; 10b. Adapter shaft; 11. Adjustment mechanism; 11a. Brake motor; 11b. Third gear; 11c. Fourth gear; 12. Auxiliary handle. Detailed Implementation

[0045] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0046] like Figures 1 to 6 As shown;

[0047] An embodiment of this utility model provides a soot removal device for a steam turbine boiler in a thermal power plant, comprising:

[0048] The mobile base 1 is equipped with a set of caster wheels 2 at the bottom. The mobile base 1 has a U-shaped structure and serves as the basic support and mobile platform for the entire dust removal device.

[0049] Mounting box 3 is mounted on the movable base 1. A drive shaft 4 is rotatably mounted in the shaft hole of mounting box 3, and a swing arm 5 is fixedly mounted on the drive shaft 4.

[0050] The threaded rod 6 is mounted on the swing arm 5 via the transmission mechanism 7. The bottom of the threaded rod 6 is equipped with a mounting platform 9 for mounting the dust collection mechanism 8. The transmission mechanism 7 is used to provide lifting power to the threaded rod 6.

[0051] Drive mechanism 10 is installed at the top of threaded rod 6. Drive mechanism 10 is used to increase the working area of ​​vacuuming mechanism 8.

[0052] Adjustment mechanism 11 is installed inside the mounting box 3. Adjustment mechanism 11 is used to drive the swing arm 5 on the drive shaft 4 to adjust the angle.

[0053] The adjustment mechanism 11, drive mechanism 10, transmission mechanism 7, and dust collection mechanism 8 are all controlled by an external control box;

[0054] By adopting the above technical solution, the fuma wheel set 2 at the bottom of the mobile base 1 can not only realize the flexible movement of the whole device, which is convenient for quick switching between different boilers, but also stabilize the device through the locking function of the fuma wheel, ensuring the stability during ash removal operation. The mobile base 1 provides a solid foundation support for the mounting box 3, ensuring that all components are installed firmly. The drive shaft 4, which is rotatably installed in the mounting box 3, works with the swing arm 5. Under the action of the adjustment mechanism 11, the angle of the swing arm 5 can be adjusted, which makes it easy for the dust collection mechanism 8 and other components to quickly move away from the boiler when not in the ash removal state. The threaded rod 6 drives the mounting platform 9 and the dust collection mechanism 8 to rise and fall through the transmission mechanism 7, which can flexibly adjust the height of the dust collection mechanism 8 so that it can approach the lower inner wall of the boiler. The drive mechanism 10 increases the working area of ​​the dust collection mechanism 8, further improving the ash removal efficiency and achieving the effect of wide ash removal range, convenient movement and strong adaptability.

[0055] As a preferred embodiment of the above technical solution, such as Figures 1 to 4 As shown, the transmission mechanism 7 includes:

[0056] Mounting shaft 7a is fixedly installed in the through hole of swing arm 5. A guide component 7b is provided inside the mounting shaft 7a. The guide component 7b is slidably connected to the guide groove provided on the threaded rod 6.

[0057] Threaded tube 7c is rotatably installed in the through hole of swing arm 5, and threaded tube 7c is connected to threaded rod 6.

[0058] The drive shaft 7d is rotatably mounted inside the shaft cavity of the drive shaft 4. Both the drive shaft 7d and the threaded tube 7c are equipped with pulleys 7e, and the two pulleys 7e are connected by a drive belt 7f.

[0059] The power mechanism 7g is installed inside the mounting box 3. The power mechanism 7g is used to provide rotational power to the drive shaft 7d.

[0060] In this embodiment, the mounting shaft 7a is fixed at the through hole of the swing arm 5, and its internal guide 7b is slidably connected to the guide groove of the threaded rod 6, which can provide precise guidance for the lifting and lowering of the threaded rod 6 and prevent the threaded rod 6 from rotating and deviating. The threaded tube 7c is connected to the threaded rod 6, and the height of the dust collection mechanism 8 can be finely adjusted through the threaded transmission, which can accurately control its distance from the lower inner wall of the boiler. The transmission shaft 7d is rotatably installed inside the shaft cavity of the drive shaft 4, and is connected to the threaded tube 7c with the pulley 7e and the transmission belt 7f to realize the transmission of rotational power of the power mechanism 7g. The power mechanism 7g is installed inside the mounting box 3, and the centralized arrangement is convenient for unified control by the external control box. Moreover, the design of the transmission shaft 7d built into the shaft cavity of the drive shaft 4 saves space and makes the overall structure more compact. The coordinated action of each component ensures the stability of the lifting and lowering of the dust collection mechanism 8.

[0061] As a preferred embodiment of the above technical solution, such as Figures 1 to 4 As shown, the power mechanism 7g includes:

[0062] The power motor 7g1 is installed inside the mounting box 3, and the first gear 7g2 is coaxially mounted on the output end of the power motor 7g1.

[0063] The second gear 7g3 is coaxially mounted on the transmission shaft 7d, and the second gear 7g3 meshes with the first gear 7g2.

[0064] In this embodiment, the first gear 7g2, coaxially mounted on the output end of the power motor 7g1, meshes with the second gear 7g3, coaxially mounted on the transmission shaft 7d, to stably and efficiently transmit the rotational power of the power motor 7g1 to the transmission shaft 7d. This ensures that the transmission shaft 7d drives the threaded tube 7c to rotate precisely through the pulley 7e and the transmission belt 7f, thereby achieving smooth lifting and lowering of the threaded rod 6 and the dust collection mechanism 8, and improving the power operation stability of the ash removal device for the steam turbine boiler in thermal power plants.

[0065] As a preferred embodiment of the above technical solution, such as Figures 1 to 5 As shown, the vacuuming mechanism 8 includes:

[0066] Vacuum cleaner 8a, mounted on mounting platform 9;

[0067] The connecting pipe 8b is fixedly installed on the mounting platform 9. The adapter pipe 8c is rotatably installed on the connecting pipe 8b. Multiple suction nozzles 8d are equally spaced along the length of the adapter pipe 8c. The adapter pipe 8c is connected to the drive mechanism 10.

[0068] The connecting pipe 8e is connected to the input end of the vacuum cleaner 8a and the inner hole of the connecting pipe 8b, respectively.

[0069] Two cleaning mechanisms 8f are installed at both ends of the adapter pipe 8c, respectively;

[0070] In this embodiment, the vacuum cleaner 8a is installed on the mounting platform 9, providing stable power for dust adsorption. Together with the connecting pipe 8e, which connects to the input end of the vacuum cleaner 8a and the inner hole of the connecting pipe 8b, a complete and unobstructed dust suction path is formed. This ensures that the dust collected by the transfer pipe 8c is efficiently transported to the vacuum cleaner 8a, preventing dust accumulation and blockage within the pipe. The connecting pipe 8b is fixed to the mounting platform 9, and the transfer pipe 8c, rotatably mounted on it, is connected to the drive mechanism 10. The drive mechanism 10 can drive the transfer pipe 8c to rotate flexibly. Combined with multiple suction nozzles 8d evenly spaced along the length of the transfer pipe 8c, the dust suction coverage area can be significantly expanded, effectively covering different areas of the boiler's lower inner wall. The two cleaning mechanisms 8f installed at both ends of the transfer pipe 8c can simultaneously assist in cleaning the tightly adhered ash on the boiler's inner wall while the transfer pipe 8c rotates. Loosening the dust facilitates rapid adsorption by the suction nozzles 8d, reducing blind spots in dust removal and improving the cleanliness of the cleaning process.

[0071] As a preferred embodiment of the above technical solution, such as Figures 1 to 5 As shown, the cleaning mechanism 8f includes:

[0072] The movable part 8f1 is slidably mounted on the adapter tube 8c, and the brush 8f2 is disposed on the movable part 8f1;

[0073] Threaded post 8f3 is mounted on moving part 8f1 and passes through the long slot of moving part 8f1. Fastener 8f4 is mounted on threaded post 8f3.

[0074] In this embodiment, the movable part 8f1 is slidably installed on the transfer pipe 8c. The position of the movable part 8f1 can be flexibly adjusted according to the inner diameter of the boiler, thereby changing the working position of the brush 8f2 on it. This ensures that the brush 8f2 can accurately fit the ash accumulation area to be cleaned, avoiding the cleaning blind spot problem of traditional fixed-position cleaning parts. The brush 8f2 on the movable part 8f1 can physically clean the ash that is tightly attached to the inner wall of the boiler when the transfer pipe 8c rotates with the drive mechanism 10. The threaded post 8f3 installed on the movable part 8f1 and passing through its long slot, together with the fastener 8f4 on it, can be quickly locked and fixed after the movable part 8f1 is adjusted to the target position, preventing the movable part 8f1 from shifting during the cleaning process and ensuring the working stability of the brush 8f2.

[0075] As a preferred embodiment of the above technical solution, such as Figures 1 to 4 As shown, the drive mechanism 10 includes:

[0076] The drive motor 10a is mounted on the threaded rod 6 via a support frame;

[0077] The adapter shaft 10b is rotatably installed in the inner cavity of the threaded rod 6. One end of the adapter shaft 10b is connected to the output end of the drive motor 10a, and the other end is connected to the adapter tube 8c.

[0078] In this embodiment, the adapter shaft 10b is rotatably installed in the inner cavity of the threaded rod 6. This design, which is built into the threaded rod 6, can effectively save device space. One end of the adapter shaft 10b is connected to the output end of the drive motor 10a, and the other end is connected to the adapter tube 8c. It can efficiently and accurately transmit the rotational power of the drive motor 10a to the adapter tube 8c, causing the adapter tube 8c to rotate stably. This allows the multiple suction nozzles 8d on the adapter tube 8c to rotate synchronously to expand the suction coverage area. At the same time, the brushes 8f2 of the cleaning mechanism 8f at both ends of the adapter tube 8c rotate synchronously to clean, ensuring that the accumulated ash on the lower inner wall of the boiler and in different areas can be covered and treated.

[0079] As a preferred embodiment of the above technical solution, such as Figures 2 to 3 As shown, the adjustment mechanism 11 includes:

[0080] Brake motor 11a is installed inside mounting box 3, and a third gear 11b is installed at the output end of brake motor 11a;

[0081] The fourth gear 11c is coaxially mounted on the drive shaft 4, and the fourth gear 11c meshes with the third gear 11b.

[0082] In this embodiment, the third gear 11b at the output end of the brake motor 11a meshes with the fourth gear 11c coaxially mounted on the drive shaft 4, efficiently transmitting the rotational power of the brake motor 11a to the drive shaft 4, driving the swing arm 5 to achieve angle adjustment, and quickly moving components such as the dust collection mechanism 8 away from the boiler area in the non-dust cleaning state without interfering with the normal operation of the boiler.

[0083] As a preferred embodiment of the above technical solution, such as Figures 1 to 2 As shown, an auxiliary handle 12 is provided on the movable base 1;

[0084] In this embodiment, the auxiliary handle 12 provides a convenient force application point for the movement operation of the mobile base 1. In conjunction with the fuma wheel set 2 at the bottom of the mobile base 1, the operator can easily push or pull the entire ash removal device through the auxiliary handle 12. This not only makes it easier to switch the device between different boilers, but also allows for precise control of the movement direction when adjusting the device to align with the boiler ash removal operation position.

[0085] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A soot removal device for a steam turbine boiler in a thermal power plant, characterized in that, include: The mobile base (1) is provided with a set of ferrules (2) at the bottom end, and the mobile base (1) is provided with a U-shaped structure; Mounting box (3) is mounted on the movable base (1). A drive shaft (4) is rotatably mounted in the shaft hole of the mounting box (3). A swing arm (5) is fixedly mounted on the drive shaft (4). The threaded rod (6) is mounted on the swing arm (5) via a transmission mechanism (7). The bottom of the threaded rod (6) is equipped with a mounting platform (9) for mounting the dust collection mechanism (8). The transmission mechanism (7) is used to provide lifting power to the threaded rod (6). A drive mechanism (10) is installed at the top of the threaded rod (6), and the drive mechanism (10) is used to increase the working area of ​​the dust collection mechanism (8); An adjustment mechanism (11) is installed inside the mounting box (3). The adjustment mechanism (11) is used to drive the swing arm (5) on the drive shaft (4) to adjust the angle.

2. The ash removal device for steam turbine boilers in thermal power plants as described in claim 1, characterized in that, The transmission mechanism (7) includes: The mounting shaft (7a) is fixedly installed in the through hole of the swing arm (5). A guide (7b) is provided inside the mounting shaft (7a). The guide (7b) is slidably connected to the guide groove provided on the threaded rod (6). A threaded tube (7c) is rotatably installed in the through hole of the swing arm (5), and the threaded tube (7c) is connected to the threaded rod (6). A drive shaft (7d) is rotatably mounted inside the shaft cavity of the drive shaft (4). Both the drive shaft (7d) and the threaded tube (7c) are provided with pulleys (7e), and the two pulleys (7e) are connected by a drive belt (7f). A power mechanism (7g) is installed inside the mounting box (3) and is used to provide rotational power to the drive shaft (7d).

3. The ash removal device for steam turbine boilers in thermal power plants as described in claim 2, characterized in that, The power mechanism (7g) includes: A power motor (7g1) is installed inside the mounting box (3), and a first gear (7g2) is coaxially mounted on the output end of the power motor (7g1); The second gear (7g3) is coaxially mounted on the transmission shaft (7d), and the second gear (7g3) meshes with the first gear (7g2).

4. The ash removal device for steam turbine boilers in thermal power plants as described in claim 1, characterized in that, The vacuuming mechanism (8) includes: A vacuum cleaner (8a) is mounted on the mounting platform (9); A connecting pipe (8b) is fixedly installed on the mounting platform (9). An adapter pipe (8c) is rotatably installed on the connecting pipe (8b). The adapter pipe (8c) is provided with multiple suction nozzles (8d) at equal intervals along its length. The adapter pipe (8c) is connected to the drive mechanism (10). The connecting pipe (8e) is connected to the input end of the vacuum cleaner (8a) and the inner hole of the connecting pipe (8b), respectively; Two cleaning mechanisms (8f) are respectively installed at both ends of the adapter pipe (8c).

5. The ash removal device for steam turbine boilers in thermal power plants as described in claim 4, characterized in that, The cleaning mechanism (8f) includes: A movable component (8f1) is slidably mounted on the adapter pipe (8c), and a brush (8f2) is disposed on the movable component (8f1); A threaded post (8f3) is mounted on the movable part (8f1) and passes through the elongated slot of the movable part (8f1), and a fastener (8f4) is mounted on the threaded post (8f3).

6. The ash removal device for steam turbine boilers in thermal power plants as described in claim 4, characterized in that, The drive mechanism (10) includes: The drive motor (10a) is mounted on the threaded rod (6) via a support frame; The adapter shaft (10b) is rotatably installed in the inner cavity of the threaded rod (6). One end of the adapter shaft (10b) is connected to the output end of the drive motor (10a), and the other end is connected to the adapter tube (8c).

7. The ash removal device for steam turbine boilers in thermal power plants as described in claim 1, characterized in that, The adjustment mechanism (11) includes: A brake motor (11a) is installed inside the mounting box (3), and a third gear (11b) is installed at the output end of the brake motor (11a); The fourth gear (11c) is coaxially mounted on the drive shaft (4), and the fourth gear (11c) meshes with the third gear (11b).

8. The ash removal device for steam turbine boilers in thermal power plants as described in claim 1, characterized in that, An auxiliary handle (12) is provided on the mobile base (1).

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