Ash removal device for steam turbine boiler of thermal power plant

Abstract

The utility model relates to the technical field of boiler ash removal devices, and discloses an ash removal device for a steam turbine boiler of a thermal power plant, which comprises a base plate and a control box, the control box is arranged at one side of the lower end of the base plate, hoisting pieces are arranged at four opposite angles of the upper end face of the base plate, and a sliding chute is arranged at one side of the center of the lower end face of the base plate. A storage groove is formed in the center of the inner side wall of the first sliding groove, a driving structure is arranged in the storage groove, a sliding block is slidably connected into the sliding groove, and electric telescopic rods are fixedly connected to the four opposite angles of the lower end face of the sliding block. According to the dust collection device, the driving structure is controlled to enable the sliding block to move along the sliding groove, the dust collection structure and the brush are lifted through the base plate and the four electric telescopic rods, before and after cleaning, normal use of the boiler is not affected, the dust collection device is more stable during operation, dust collection is conducted on the lower inner wall of the boiler body through the dust collection structure, and the dust collection efficiency is improved. And dust is adsorbed more thoroughly, and the cleanliness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler ash cleaning devices, in particular to a ash cleaning device for a steam turbine boiler in a thermal power plant. Background Art

[0002] A steam turbine boiler is a common heat energy conversion device that generates heat energy by burning fuel, which is then converted into mechanical energy to drive a generator to generate electricity. When the boiler is burning and in use, soot will adhere to the heating surface and flue of the boiler. Ash accumulation on the heating surface reduces the thermal efficiency of the boiler. Therefore, after a period of use, the boiler needs to be cleaned with a cleaning device to clean the dust inside the boiler.

[0003] After searching, a Chinese patent discloses a cleaning device for a steam turbine boiler in a thermal power plant (publication number CN216521732U). Although the patented technology greatly reduces the difficulty of replacing operators, it also improves the cleaning efficiency of the dust removal device. The device is provided with a suction mechanism, so that the dust suction port can effectively absorb the floating dust, avoiding the operator from inhaling dust into the body during cleaning, thereby ensuring the physical and mental health of the operator. However, during use, when the side wall is cleaned with a brush, dust will inevitably fall on the lower inner wall of the boiler furnace body, and the dust suction port is located at a higher position, which makes it inconvenient to clean the dust on the lower inner wall. Therefore, a technician in this field provides a cleaning device for a steam turbine boiler in a thermal power plant to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and a dust cleaning device for a steam turbine boiler in a thermal power plant is proposed. When in use, a rotary joint is installed on the output end of a first motor, the output end of the rotary joint is connected to a dust suction pipe, the output end is limited, and then the first pipe is connected to the input end of the rotating structure. When the first motor drives the input end of the rotary joint to rotate, it will not affect the absorption of dust. Then, the dust falling on the lower inner wall of the boiler furnace body is adsorbed through multiple dust suction nozzles on the lower end faces of the two second pipes, the dust is adsorbed more thoroughly, and the cleanliness is improved.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dust cleaning device for a steam turbine boiler in a thermal power plant, comprising a base plate and a control box, the control box being arranged at one side of the lower end of the base plate, four diagonal portions of the upper end surface of the base plate being provided with hanging parts, a slide groove being provided at one side of the center of the lower end surface of the base plate, a storage groove being provided at the center of an inner wall of the slide groove, a driving structure being provided inside the storage groove, a slider being slidably connected inside the slide groove, four diagonal portions of the lower end surface of the slider being fixedly connected with electric telescopic rods, four output ends of the electric telescopic rods being fixedly connected with a base, a dust suction structure being provided at the center of the upper end surface of the base, a first motor being provided at the center of the lower end surface of the base, a rotating joint being fixedly connected with the output end of the first motor, a first connecting pipe being fixedly connected with the lower end of the rotating joint, second connecting pipes being provided at the lower center of both side walls of the first connecting pipe, and brushes being provided at one end of two of the second connecting pipes;

[0006] Through the above technical solution, the slider is moved along the slide groove by controlling the driving structure, and the dust suction structure and the brush are lifted by the base plate and four electric telescopic rods. Before and after cleaning, the normal use of the boiler will not be affected, and the operation will be more stable. The dust suction structure is then used to suction the lower inner wall of the boiler body, so that the dust is adsorbed more thoroughly and the cleanliness is improved.

[0007] Further, the dust suction structure includes a dust suction pump, a storage box, a waste box, a dust suction pipe, a plurality of connecting columns and a filter screen, the dust suction pump and the storage box are arranged side by side at the front center of the upper end surface of the base, the waste box is arranged inside the storage box, the filter screen is arranged inside the waste box at one side, the dust suction pipe is arranged at the rear center of one side wall of the storage box, the dust suction pipe is connected to the output end of the rotary joint, and the plurality of connecting columns are respectively arranged on one side wall of the dust suction pipe, and the other ends are respectively fixedly connected to the upper end surface, one side wall and the lower end surface of the base;

[0008] Through the above technical solution, the air inside the waste box is extracted through a vacuum pump to generate negative pressure inside the waste box, and then the dust and air are transported into the waste box through the vacuum pipe, filtered through the filter and fall into the waste box, making it convenient to adsorb the dust.

[0009] Furthermore, a through hole is provided at the center of one side wall of the waste box and at the rear of the center of the other side wall;

[0010] Through the above technical solution, it is convenient for the dust inside the dust suction pipe to enter the waste box, and it is also convenient for the dust suction pump to extract the air inside the waste box.

[0011] Furthermore, dust hoods are provided at the centers of both side walls of the first connecting pipe;

[0012] Through the above technical solution, the dust on the upper ends of the two brushes is adsorbed by the two dust suction hoods.

[0013] Further, the driving structure includes a second motor, a first synchronous wheel, a first screw rod, a second synchronous wheel, a second screw rod and a synchronous belt, the second motor is arranged at the rear of the storage tank, the first screw rod is arranged on the output end of the second motor, the first synchronous wheel is sleeved on one end of the first screw rod, the second screw rod is rotatably connected to the center of the inner side wall of the storage tank at the front end of the second motor, the second synchronous wheel is sleeved on the outer side wall of the second screw rod near one end, the synchronous belt is sleeved on the outside of the first synchronous wheel and the second synchronous wheel, and the slider is threadedly sleeved on the outside of the first screw rod and the second screw rod;

[0014] Through the above technical solution, when the second motor drives the first screw rod to rotate, the first synchronous wheel drives the second synchronous wheel to rotate through the synchronous belt, so that the second screw rod rotates synchronously with the first screw rod, making the slider move more smoothly and improving stability.

[0015] Furthermore, the ends of the first screw rod and the second screw rod are both rotatably connected to an inner side wall of the slide groove;

[0016] Through the above technical solution, the first screw rod and the second screw rod can be more stable when rotating.

[0017] Furthermore, a plurality of dust suction nozzles are arranged laterally at the center of the lower end surfaces of the two second connecting pipes;

[0018] Through the above technical solution, it is convenient to absorb dust into the two second connecting pipes through multiple dust suction nozzles, and then enter the dust suction pipe through the rotating joint at the upper end of the first connecting pipe to absorb dust on the lower inner wall of the boiler furnace body.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the utility model, when the ash cleaning device for the steam turbine boiler of a thermal power plant is used, a rotary joint is installed on the output end of the first motor, the output end of the rotary joint is connected to the dust suction pipe, the output end is limited, and then the first pipe is connected to the input end of the rotating structure. When the first motor drives the input end of the rotary joint to rotate, it will not affect the absorption of dust. Then, the dust falling on the lower inner wall of the boiler furnace body is adsorbed by multiple dust suction nozzles on the lower end faces of the two second pipes, so that the dust is adsorbed more thoroughly and the cleanliness is improved.

[0021] 2. In the utility model, the slider is driven to slide inside the slide groove by controlling the driving structure, so that the dust suction structure and the brush at the lower end of the slider are driven to one side, and the dust suction structure and the brush are lifted by the base plate and four electric telescopic rods, which will not affect the normal use of the boiler before and after cleaning.

[0022] 3. In the utility model, when the second motor drives the first screw rod to rotate, the first synchronous wheel drives the second synchronous wheel to rotate synchronously through the synchronous belt, so that the second screw rod rotates synchronously with the first screw rod, making the slider more stable when sliding inside the slide groove, thereby improving safety during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a ash cleaning device for a steam turbine boiler in a thermal power plant proposed by the utility model;

[0024] Figure 2 This is a front cross-sectional view of a ash cleaning device for a steam turbine boiler in a thermal power plant proposed by the utility model;

[0025] Figure 3 This is a top sectional view of a ash cleaning device for a steam turbine boiler in a thermal power plant proposed by the utility model;

[0026] Figure 4 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0027] Figure 5 for Figure 2 A magnified schematic diagram of point B in the middle.

[0028] Legend:

[0029] 1. Base plate; 2. Lifting parts; 3. Control box; 4. Dust suction structure; 401. Dust suction pump; 402. Storage box; 403. Waste box; 404. Connecting column; 405. Dust suction tube; 406. Rotary joint; 407. Dust suction nozzle; 408. Filter; 5. Base; 6. First connecting tube; 7. Second connecting tube; 8. Brush; 9. Electric telescopic rod; 10. Slider; 11. First motor; 12. Slide; 13. Storage tank; 14. Driving structure; 1401. Second motor; 1402. First synchronous wheel; 1403. First screw rod; 1404. Second synchronous wheel; 1405. Second screw rod; 1406. Synchronous belt. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1-5The utility model provides an embodiment: a ash cleaning device for a steam turbine boiler in a thermal power plant, comprising a base plate 1 and a control box 3, wherein the control box 3 is arranged at one side of the lower end of the base plate 1, and a hoisting member 2 is arranged at four diagonal positions on the upper end surface of the base plate 1, a slide groove 12 is arranged at one side of the center of the lower end surface of the base plate 1, and a storage groove 13 is arranged at the center of an inner wall of the slide groove 12, and a driving structure 14 is arranged inside the storage groove 13, and a slider 10 is slidably connected inside the slide groove 12, and the slider 10 is moved along the slide groove 12 by controlling the driving structure 14, and the four diagonal positions of the lower end surface of the slider 10 are fixedly connected with electric telescopic rods 9, and the output ends of the four electric telescopic rods 9 are fixedly connected with the base The base 5 is provided with a dust suction structure 4 at the center of the upper end surface of the base 5, and a first motor 11 is provided at the center of the lower end surface of the base 5. The output end of the first motor 11 is fixedly connected with a rotary joint 406, and the lower end of the rotary joint 406 is fixedly connected with a first connecting pipe 6. Second connecting pipes 7 are provided at the lower center of the two side walls of the first connecting pipe 6, and brushes 8 are provided at one end of the two second connecting pipes 7. The dust suction structure 4 and the brush 8 are suspended by the base plate 1 and four electric telescopic rods 9. Before and after cleaning, it will not affect the normal use of the boiler, and it is more stable during operation. The lower inner wall of the boiler furnace body is then dusted by the dust suction structure 4, and the dust is adsorbed more thoroughly to improve the cleanliness.

[0032] Furthermore, the dust suction structure 4 includes a dust suction pump 401, a storage box 402, a waste box 403, a dust suction pipe 405, a plurality of connecting columns 404 and a filter screen 408. The dust suction pump 401 and the storage box 402 are arranged side by side at the front center of the upper end surface of the base 5, the waste box 403 is arranged inside the storage box 402, the filter screen 408 is arranged inside the waste box 403 at one side, the dust suction pipe 405 is arranged at the rear center of one side wall of the storage box 402, the dust suction pipe 405 is connected to the output end of the rotary joint 406, and the plurality of connecting columns 404 are respectively arranged on one side wall of the dust suction pipe 405, and another One end is fixedly connected to the upper end surface, one side wall and the lower end surface of the base 5 respectively, and the air inside the waste box 403 is sucked out through the dust suction pump 401 to generate negative pressure inside the waste box 403, and then the dust and air are transported into the waste box 403 through the dust suction pipe 405, filtered through the filter screen 408 and fall into the waste box 403, so as to facilitate the adsorption of dust. Through holes are opened at the center of one side wall of the waste box 403 and the back of the center of the other side wall, so as to facilitate the dust inside the dust suction pipe 405 to enter the waste box 403, and also facilitate the dust suction pump 401 to suck out the air inside the waste box 403.

[0033] The driving structure 14 includes a second motor 1401, a first synchronous wheel 1402, a first screw rod 1403, a second synchronous wheel 1404, a second screw rod 1405 and a synchronous belt 1406. The second motor 1401 is arranged at the rear of the storage tank 13. The first screw rod 1403 is arranged on the output end of the second motor 1401. The first synchronous wheel 1402 is sleeved on one end of the first screw rod 1403. The second screw rod 1405 is rotatably connected to the center of the inner side wall of the storage tank 13 at the front end of the second motor 1401. The second synchronous wheel 1404 is sleeved on one end of the outer side wall of the second screw rod 1405. The synchronous belt 1406 is sleeved on the first synchronous wheel 1402 and the outside of the second synchronous wheel 1404, the slider 10 is threadedly sleeved on the outside of the first screw rod 1403 and the second screw rod 1405. When the second motor 1401 drives the first screw rod 1403 to rotate, the first synchronous wheel 1402 drives the second synchronous wheel 1404 to rotate through the synchronous belt 1406, so that the second screw rod 1405 rotates synchronously with the first screw rod 1403, so that the slider 10 moves more smoothly and improves stability. The ends of the first screw rod 1403 and the second screw rod 1405 are both rotatably connected to an inner wall of the slide groove 12, which makes it easier for the first screw rod 1403 and the second screw rod 1405 to rotate more stably.

[0034] Dust hoods are provided at the center of the two side walls of the first connecting tube 6, and the dust on the upper ends of the two brushes 8 are adsorbed through the two dust hoods. Multiple dust nozzles 407 are arranged horizontally at the center of the lower end surfaces of the two second connecting tubes 7 to facilitate the adsorption of dust into the inside of the two second connecting tubes 7 through the multiple dust nozzles 407, and then enter the dust collection tube 405 through the rotating joint 406 at the upper end of the first connecting tube 6 to adsorb the dust on the lower inner wall of the boiler furnace body.

[0035] Working principle: When in use, the second motor 1401 is controlled to start, the second motor 1401 drives the first screw rod 1403 to rotate, the first synchronous wheel 1402 drives the second synchronous wheel 1404 to rotate synchronously through the synchronous belt 1406, so that the second screw rod 1405 rotates synchronously with the first screw rod 1403, so that the slider 10 is more stable when sliding inside the slide groove 12, and the safety during use is improved. The base 5 is moved to the top of the boiler furnace body, the four electric telescopic rods 9 are controlled to extend, the first motor 11 and the dust pump 401 are controlled to start, the four electric telescopic rods 9 push the base 5 to move downward, and the first motor 11 drives two brushes 8. Clean the inner wall of the boiler furnace body, extract the air inside the waste box 403 through the dust suction pump 401, so that negative pressure is generated inside the waste box 403, and then absorb the air and dust inside the boiler furnace body and the dust dropped on the lower inner wall of the boiler furnace body through the dust suction pipe 405, multiple dust suction nozzles 407 and two dust suction hoods, and transport the dust and air into the waste box 403, filter them through the filter screen 408 and drop into the waste box 403. After use, control the four electric telescopic rods 9 to retract, and then control the second motor 1401 to start in reverse, and move the slider 10 and the base 5 to one side, which will not affect the normal use of the boiler.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A soot cleaning device for a steam turbine boiler in a thermal power plant, comprising a base plate (1) and a control box (3), wherein the control box (3) is arranged at one side of the lower end of the base plate (1), and is characterized in that: The upper end surface of the base plate (1) is provided with hanging parts (2) at four diagonal positions, the lower end surface of the base plate (1) is provided with a slide groove (12) at one side of the center, the slide groove (12) is provided with a storage groove (13) at the center of an inner wall, the storage groove (13) is provided with a driving structure (14) inside, the slide groove (12) is slidably connected with a slider (10), the lower end surface of the slider (10) is fixedly connected with electric telescopic rods (9), and the four electric telescopic rods (9) output The end is fixedly connected to a base (5), a dust suction structure (4) is provided at the center of the upper end surface of the base (5), a first motor (11) is provided at the center of the lower end surface of the base (5), an output end of the first motor (11) is fixedly connected to a rotary joint (406), a lower end of the rotary joint (406) is fixedly connected to a first connecting pipe (6), second connecting pipes (7) are provided at the lower center of both side walls of the first connecting pipe (6), and brushes (8) are provided at one end of the two second connecting pipes (7).

2. The soot cleaning device for a steam turbine boiler in a thermal power plant according to claim 1, characterized in that: The dust suction structure (4) comprises a dust suction pump (401), a storage box (402), a waste box (403), a dust suction pipe (405), a plurality of connecting columns (404) and a filter screen (408); the dust suction pump (401) and the storage box (402) are arranged side by side at the front center of the upper end surface of the base (5); the waste box (403) is arranged inside the storage box (402); the filter screen (408) is arranged inside the waste box (403) at one side; the dust suction pipe (405) is arranged at the rear center of a side wall of the storage box (402); the dust suction pipe (405) is connected to the output end of the rotary joint (406); the plurality of connecting columns (404) are respectively arranged on a side wall of the dust suction pipe (405), and the other ends are respectively fixedly connected to the upper end surface, one side wall and the lower end surface of the base (5).

3. The soot cleaning device for a steam turbine boiler in a thermal power plant according to claim 2, characterized in that: A through hole is provided at the center of one side wall of the waste box (403) and at the rear of the center of the other side wall.

4. The soot cleaning device for a steam turbine boiler in a thermal power plant according to claim 1, characterized in that: Dust hoods are provided at the centre of both side walls of the first connecting pipe (6).

5. The soot cleaning device for a steam turbine boiler in a thermal power plant according to claim 1, characterized in that: The driving structure (14) comprises a second motor (1401), a first synchronous wheel (1402), a first screw rod (1403), a second synchronous wheel (1404), a second screw rod (1405) and a synchronous belt (1406), wherein the second motor (1401) is arranged at the rear of the storage tank (13), the first screw rod (1403) is arranged on the output end of the second motor (1401), and the first synchronous wheel (1402) is sleeved on the first screw rod (1403). 03), the second screw rod (1405) is rotatably connected to the center of the inner wall of the storage groove (13) at the front end of the second motor (1401), the second synchronous wheel (1404) is sleeved on the outer wall of the second screw rod (1405) near one end, the synchronous belt (1406) is sleeved on the outside of the first synchronous wheel (1402) and the second synchronous wheel (1404), and the slider (10) is threadedly sleeved on the outside of the first screw rod (1403) and the second screw rod (1405).

6. A soot cleaning device for a steam turbine boiler in a thermal power plant according to claim 5, characterized in that: The ends of the first screw rod (1403) and the second screw rod (1405) are both rotatably connected to an inner side wall of the slide groove (12).

7. The soot cleaning device for a steam turbine boiler in a thermal power plant according to claim 1, characterized in that: A plurality of dust suction nozzles (407) are arranged transversely at the centre of the lower end faces of the two second connecting pipes (7).

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