Cleaning device of boiler for thermal power generation

Abstract

The invention discloses a cleaning device of a boiler for thermal power generation, and belongs to the technical field of power plant boiler cleaning devices. The connecting pipe is hinged to the wall-climbing robot, the connecting pipe penetrates through the wall-climbing robot, a connecting ring is hinged to the upper end of the connecting pipe, and a high-pressure spray head is arranged at the lower end of the connecting pipe; the flexible pipe is fixedly connected to the connecting ring, and the end part of the flexible pipe is communicated with the connecting pipe; the two groups of elastic rake tooth mechanisms are respectively connected to two opposite ends of the wall-climbing robot; when the wall-climbing robot walks on the water-cooled wall of the boiler, the elastic rake tooth mechanism adaptively abuts against the surface of the water-cooled wall, so that the elastic rake tooth mechanism accurately scrapes deposits on the surface of the water-cooled wall, high-pressure gas conveyed to the connecting pipe from the interior of the flexible pipe is released at the high-pressure spray head, scraped deposit powder is blown away, and the water-cooled wall of the boiler is cleaned. And deep cleaning of the groove of the water cooling wall is achieved, and the cleaning effect is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of power plant boiler cleaning devices, and particularly relates to a cleaning device for boilers used in thermal power generation. Background Art

[0002] A power station boiler refers to a medium and large-sized boiler that provides steam of a specified quantity and quality to a steam turbine in a power plant, and is one of the main thermal equipment in a thermal power plant. After long-term combustion, the deposits on the water wall of the boiler need to be cleaned.

[0003] Currently, for the water wall of a thermal power station boiler, a scraping blade is installed on a wall-climbing robot. When the wall-climbing robot moves, the scraping blade cleans the deposits on the water wall. The position of the scraping blade is relatively fixed, and it is impossible to deeply clean the grooves on the water wall, resulting in poor cleaning effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a cleaning device for boilers used in thermal power generation to solve the above-mentioned existing problems.

[0005] To achieve the above purpose, the present invention adopts the following technical solution: A cleaning device for boilers used in thermal power generation, which includes:

[0006] A wall-climbing robot;

[0007] A connecting pipe, which is hinged to the wall-climbing robot, and the connecting pipe penetrates through the wall-climbing robot. The upper end of the connecting pipe is hinged with a connecting ring, and a high-pressure nozzle is arranged at the lower end of the connecting pipe;

[0008] A flexible pipe, which is fixedly connected to the connecting ring, and the end of the flexible pipe communicates with the connecting pipe;

[0009] Two groups of elastic rake tooth mechanisms, which are respectively connected to opposite ends of the wall-climbing robot.

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

[0011] The elastic rake tooth mechanism includes a support block, a plurality of piston rods and a sealing cover. A pressure chamber is opened at the top of the support block, and a plurality of through holes arranged in a straight line are opened at the bottom of the support block. The plurality of through holes communicate with the pressure chamber. The sealing cover is installed on the upper end of the support block by bolts, and the sealing cover blocks the pressure chamber. The plurality of piston rods are respectively slidably connected in the plurality of through holes.

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

[0013] A sealing gasket is arranged between the sealing cover and the support block.

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

[0015] A valve body is provided on the cover, and the valve body extends into the pressure chamber.

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

[0017] A pressure gauge is provided on the cover, and the pressure gauge extends into the pressure chamber.

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

[0019] A piston hole is provided in the through hole, a piston block is provided at the end of the piston rod, the piston block is slidably connected in the piston hole, the aperture of the piston hole is larger than the aperture of the through hole, and the piston block abuts against the inner wall of the piston hole.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0021] 1. In the present invention, when the wall-climbing robot walks on the water-cooled wall of the boiler, the elastic rake tooth mechanism adaptively abuts against the surface of the water-cooled wall, so that the elastic rake tooth mechanism precisely scrapes the deposits on the surface of the water-cooled wall, and the high-pressure gas conveyed from the flexible pipe to the connecting pipe is released at the high-pressure nozzle, blowing the scraped deposit powder clean, realizing deep cleaning of the grooves on the water-cooled wall, and making the cleaning effect good.

[0022] 2. In the present invention, by filling the pressure chamber with fluid, the pressure of the fluid acts on the piston rod to play an extrusion role, so that the end of the piston rod adapts to the complex surface of the water-cooled wall, thereby precisely scraping the surface of the water-cooled wall and deeply cleaning the grooves, making the cleaning effect good. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the overall structure of a cleaning device for a boiler used in thermal power generation Figure 1 .

[0024] Figure 2 Schematic diagram of the overall structure of a cleaning device for a boiler used in thermal power generation Figure 2 .

[0025] Figure 3 Cross-section of a cleaning device for a boiler used in thermal power generation Figure 1 .

[0026] Figure 4 Cross-section of a cleaning device for a boiler used in thermal power generation Figure 2 .

[0027] Figure 5 For Figure 4 Partial enlarged view of part A in

[0028] Figure 6 It is an explosion diagram of a boiler for thermal power generation.

[0029] Legend description:

[0030] 1. Wall-climbing robot; 2. Connecting pipe; 3. Connecting ring; 4. High-pressure nozzle; 5. Flexible pipe; 6. Elastic rake tooth mechanism; 61. Support block; 62. Piston rod; 63. Sealing cover; 7. Pressure chamber; 8. Through hole; 9. Sealing gasket; 10. Valve body; 11. Pressure gauge; 12. Piston hole; 13. Piston block. Specific implementation manner

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0032] Please refer to Figures 1-6 , the present invention provides a technical solution: a cleaning device for a boiler for thermal power generation, including:

[0033] Wall-climbing robot 1;

[0034] Connecting pipe 2, which is hinged on the wall-climbing robot 1, and the connecting pipe 2 penetrates through the wall-climbing robot 1. The upper end of the connecting pipe 2 is hinged with a connecting ring 3, and the lower end of the connecting pipe 2 is provided with a high-pressure nozzle 4;

[0035] Flexible pipe 5, which is fixedly connected to the connecting ring 3, and the end of the flexible pipe 5 communicates with the connecting pipe 2;

[0036] Two groups of elastic rake tooth mechanisms 6, which are respectively connected to the opposite ends of the wall-climbing robot 1;

[0037] The elastic rake tooth mechanism 6 includes a support block 61, multiple piston rods 62 and a sealing cover 63. A pressure chamber 7 is opened at the top of the support block 61. A plurality of through holes 8 arranged in a straight line are opened at the bottom of the support block 61. The plurality of through holes 8 communicate with the pressure chamber 7. The sealing cover 63 is installed on the upper end of the support block 61 through bolts, and the sealing cover 63 blocks the pressure chamber 7. The multiple piston rods 62 are respectively slidably connected in the plurality of through holes 8. The pressure chamber 7 is filled with fluid, and the pressure of the fluid acts on the piston rod 62 to play an extrusion role, so that the end of the piston rod 62 adapts to the complex surface of the water-cooled wall, thereby accurately scraping the surface of the water-cooled wall and deeply cleaning the grooves, resulting in a good cleaning effect;

[0038] A sealing gasket 9 is arranged between the cover 63 and the support block 61 to ensure the sealing performance of the pressure chamber 7;

[0039] A valve body 10 is arranged on the cover 63, and the valve body 10 extends into the pressure chamber 7, and fluid can be injected into the pressure chamber 7 from the valve body 10;

[0040] A pressure gauge 11 is arranged on the cover 63, and the pressure gauge 11 extends into the pressure chamber 7, and the pressure in the pressure chamber 7 can be detected in real time;

[0041] A piston hole 12 is arranged in the through hole 8, a piston block 13 is arranged at the end of the piston rod 62, the piston block 13 is slidably connected in the piston hole 12, the aperture of the piston hole 12 is larger than the aperture of the through hole 8, and the piston block 13 abuts against the inner wall of the piston hole 12 to ensure the sealing performance in the through hole 8 and also ensure the smooth sliding of the piston rod 62.

[0042] Working principle: First, when the wall-climbing robot 1 walks on the water-cooled wall of the boiler, the pressure chamber 7 is filled with fluid, and the pressure of the fluid acts on the piston rod 62 to play a squeezing role. Specifically, the pressure acts on the piston block 13, and the piston block 13 slides in the piston hole 12, so that the end of the piston rod 62 adapts to the complex surface of the water-cooled wall, thereby accurately scraping the surface of the water-cooled wall and cleaning the grooves deeply. Secondly, the high-pressure gas transported from the flexible pipe 5 to the connecting pipe 2 is released at the high-pressure nozzle 4 to blow away the scraped deposit powder. Finally, the pressure inside the pressure chamber 7 can be detected through the pressure surface, and fluid can be injected into or drawn from the pressure chamber 7 through the valve body 10 to change the pressure inside the pressure chamber 7.

[0043] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A cleaning device for a boiler used in thermal power generation, characterized in that: Comprising: A wall-climbing robot (1); A connecting pipe (2), which is hinged to the wall-climbing robot (1), and the connecting pipe (2) penetrates through the wall-climbing robot (1). A connecting ring (3) is hinged to the upper end of the connecting pipe (2), and a high-pressure nozzle (4) is arranged at the lower end of the connecting pipe (2); A flexible pipe (5), which is fixedly connected to the connecting ring (3), and the end of the flexible pipe (5) communicates with the connecting pipe (2); Two groups of elastic rake tooth mechanisms (6), which are respectively connected to opposite ends of the wall-climbing robot (1).

2. The cleaning device for a boiler used in thermal power generation according to claim 1, wherein, The elastic rake tooth mechanism (6) includes a support block (61), a plurality of piston rods (62) and a cover (63). A pressure chamber (7) is formed at the top of the support block (61). A plurality of through holes (8) arranged in a straight line are formed at the bottom of the support block (61). The plurality of through holes (8) communicate with the pressure chamber (7). The cover (63) is installed on the upper end of the support block (61) by bolts, and the cover (63) closes the pressure chamber (7). The plurality of piston rods (62) are respectively slidably connected in the plurality of through holes (8).

3. The cleaning device for a boiler used in thermal power generation according to claim 2, characterized in that, A gasket (9) is arranged between the cover (63) and the support block (61).

4. The cleaning device for a boiler used in thermal power generation according to claim 3, characterized in that, A valve body (10) is arranged on the cover (63), and the valve body (10) extends into the pressure chamber (7).

5. The cleaning device for a boiler used in thermal power generation according to claim 4, wherein, A pressure gauge (11) is arranged on the cover (63), and the pressure gauge (11) extends into the pressure chamber (7).

6. The cleaning device for a boiler used in thermal power generation according to claim 5, wherein A piston hole (12) is arranged in the through hole (8). A piston block (13) is arranged at the end of the piston rod (62). The piston block (13) is slidably connected in the piston hole (12). The aperture of the piston hole (12) is larger than the aperture of the through hole (8). The piston block (13) abuts against the inner wall of the piston hole (12).

Images