Pneumatic ash conveying pipeline for thermal power plant

Abstract

The utility model discloses a pneumatic ash conveying pipeline for a thermal power plant, and relates to the technical field of pneumatic ash conveying. The dust conveying pipe comprises a dust conveying pipe body, the dust conveying pipe body comprises a straight pipe part and a bent pipe part, the bent pipe part of the dust conveying pipe body is fixedly connected with an elastic diaphragm, the side face of the elastic diaphragm is fixedly connected with a connector, the dust conveying pipe body is communicated with an auxiliary pipe, and the peripheral side face of the auxiliary pipe is fixedly connected with an extension table parallel to the elastic diaphragm. An elastic diaphragm is arranged on the bent pipe portion, an arc-shaped air plate is arranged on the bent pipe portion, an extending table is arranged on the bent pipe portion, a pneumatic driving piece is rotatably connected in the extending table, the pneumatic driving piece comprises a rotating shaft, and the rotating shaft penetrates through the auxiliary pipe and is rotatably connected with the extending table. The S-shaped guide groove in the driving shaft guides the guide rod, the elastic diaphragm can be pushed back and forth through the L-shaped rod, and the situation that dust particles are deposited on the bent pipe portion in the dust conveying pipeline, and pneumatic dust conveying blockage is caused can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic ash conveying technology, and in particular to a pneumatic ash conveying pipeline for thermal power plants. Background Technology

[0002] When fly ash from combustion in a thermal power plant is transported, the generated dust particles are uniformly fed into a conveying pipe, and then an air source is connected to the conveying pipe. The dust particles are transported along the airflow and through the sealed conveying pipe. The dust particles are transported relatively stably in the straight pipe, but when passing through the bend, some dust particles will accumulate at the bend of the conveying pipe. Gradually, too many dust particles will accumulate at the bend, causing particle blockage in the conveying pipe and affecting the efficiency of pneumatic conveying. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies where dust particles easily accumulate at the bends of the conveying pipe, causing blockages in pneumatic conveying. This invention proposes a pneumatic ash conveying pipeline for thermal power plants.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Design a pneumatic ash conveying pipeline for a thermal power plant, comprising an ash conveying pipe body, which includes a straight pipe section and a curved pipe section. An elastic diaphragm is fixedly connected to the curved pipe section of the ash conveying pipe body. A connector is fixedly connected to the side of the elastic diaphragm. A secondary pipe is connected to the main ash conveying pipe body. An extension platform parallel to the elastic diaphragm is fixedly connected to the periphery of the secondary pipe. A pneumatic drive component is rotatably connected inside the extension platform. The pneumatic drive component includes a rotating shaft that passes through the secondary pipe and is rotatably connected to the extension platform. A wheel is fixedly connected to the inner end of the rotating shaft in the secondary pipe. Several arc-shaped air vanes are evenly fixedly connected to the periphery of the wheel. A drive shaft is fixedly connected to the other end of the rotating shaft. A serpentine guide groove is formed on the drive shaft. A guide component for traction of the elastic diaphragm is fixedly connected to the side of the connector.

[0006] Preferably, the guide includes an L-shaped rod, which is fixedly connected to the connector. A guide barrel is fixedly connected to the side of the L-shaped rod, and two guide rods are symmetrically fixedly connected to the guide barrel. One end of each of the two guide rods is located in a serpentine guide groove.

[0007] Preferably, the serpentine guide groove is an annular groove, and the serpentine guide groove includes a left guide portion and a right guide portion.

[0008] Preferably, one end of the guide barrel is open and its depth is longer than the length of the drive shaft.

[0009] Preferably, the guide barrel has two opposite sides symmetrically fixedly connected with a sliding plate, and the surface of the extension platform has two slide rails that slide in cooperation with the sliding plate.

[0010] Preferably, an air guide plate is fixedly connected to the inner wall of the secondary pipe. The air guide plate is arc-shaped, and the end of the air guide plate is aligned with the curved part of the arc-shaped air guide plate.

[0011] The present invention provides a pneumatic ash conveying pipeline for thermal power plants, which has the following advantages: The gas input into the secondary pipe drives an arc-shaped air vane to rotate, which in turn drives a rotating wheel to rotate. The rotating wheel then drives a rotating shaft, which in turn drives a drive shaft. A serpentine guide groove within the drive shaft is fitted to a guide rod, allowing the guide barrel to reciprocate. The guide barrel then drives an L-shaped rod to reciprocate, which in turn moves the connector. The connector pushes an elastic diaphragm to move within the curved section of the ash conveying pipe, thus pushing off the dust deposited in the curved section. This ensures that the dust particles within the ash conveying pipe remain in a flowing state, preventing deposition and blockage of the pipe. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a pneumatic ash conveying pipeline in a thermal power plant.

[0013] Figure 2 This is a schematic cross-sectional view of the main body of the ash conveying pipe of this utility model.

[0014] Figure 3 This is a schematic cross-sectional view of the guide barrel of this utility model.

[0015] Figure 4 For the present utility model Figure 3 Enlarged view of part A in the image.

[0016] Figure 5 This is a schematic diagram of the secondary tube structure of this utility model.

[0017] Figure 6 This is a schematic diagram of the wind-inducing plate structure of this utility model.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. Ash conveying pipe main body; 2. Elastic diaphragm; 3. Connector; 4. Secondary pipe; 5. Rotating shaft; 6. Rotating wheel; 7. Arc-shaped air vane; 8. Drive shaft; 9. Serpentine guide groove; 10. Extension table; 11. Slide rail; 12. Slide plate; 13. Guide barrel; 14. Guide rod; 15. L-shaped rod; 16. Air duct. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example 1

[0022] Reference Figure 1-6 This utility model is a pneumatic ash conveying pipeline for thermal power plants, including an ash conveying pipe body 1, which includes a straight pipe section and a bent pipe section. An elastic diaphragm 2 is fixedly connected to the bent pipe section of the ash conveying pipe body 1. A connector 3 is fixedly connected to the side of the elastic diaphragm 2. A secondary pipe 4 is connected to the ash conveying pipe body 1. An extension platform 10, which is parallel to the elastic diaphragm 2, is fixedly connected to the side of the secondary pipe 4. A pneumatic drive component is rotatably connected inside the extension platform 10.

[0023] The pneumatic drive unit includes a rotating shaft 5, which passes through the secondary tube 4 and is rotatably connected to the extension platform 10. A rotating wheel 6 is fixedly connected to the inner end of the rotating shaft 5 in the secondary tube 4. Several arc-shaped wind vanes 7 are evenly fixedly connected to the circumference of the rotating wheel 6. A drive shaft 8 is fixedly connected to the other end of the rotating shaft 5. A serpentine guide groove 9 is provided on the drive shaft 8. A guide for traction of the elastic diaphragm 2 is fixedly connected to the side of the connector 3. The serpentine guide groove 9 is a ring-shaped groove and includes a left guide part and a right guide part.

[0024] The L-shaped rod 15 is fixedly connected to the connector 3. A guide barrel 13 is fixedly connected to the side of the L-shaped rod 15. Two guide rods 14 are symmetrically fixedly connected to the guide barrel 13. One end of each guide rod 14 is located in the serpentine guide groove 9.

[0025] The operation process of this embodiment is as follows: When in use, after connecting the main body 1 of the ash conveying pipe and the auxiliary pipe 4 to the pneumatic conveying pipeline, the dust particles are conveyed at a uniform speed and gas is delivered into the pneumatic conveying pipeline. The dust particles can be conveyed by replacing the bend in the original pneumatic conveying pipeline with the main body 1 of the ash conveying pipe. When conveying dust particles, some dust particles will remain on the surface of the elastic diaphragm 2 on the bend of the ash conveying pipe. In the original technology, it is difficult to clean the dust particles remaining on the bend. By replacing the bend with the elastic diaphragm 2, the elastic diaphragm 2 can be pushed from the outside, so that the dust particles deposited in the elastic diaphragm 2 can re-enter the flow channel. This can avoid the blockage of the pneumatic conveying when too many dust particles are deposited in the bend during use.

[0026] The gas always flows through the auxiliary pipe 4 and the main body of the ash conveying pipe 1. When the gas passes through, it blows the arc-shaped wind vane 7, which drives the rotating wheel 6 to rotate. The rotation of the rotating wheel 6 drives the rotating shaft 5 to rotate, and the rotating shaft 5 drives the drive shaft 8 to rotate. The serpentine guide groove 9 inside the drive shaft 8 cooperates with the guide rod 14. When the guide rod 14 moves to the left guide section, it drives the guide bucket 13 to move to the left. Conversely, when the guide rod 14 moves to the right guide section, it drives the guide bucket 13 to move to the right. The air force in the pneumatic conveying system can continuously drive the guide bucket 13 to move. The guide bucket 13 moves back and forth, and is rigidly connected to the L-shaped rod 15 and the connector 3. When the guide bucket 13 moves back and forth, it can drive the connector 3 to push the elastic diaphragm 2 back and forth, so that the dust particles accumulated on the elastic diaphragm 2 return to the airflow channel. The elastic diaphragm 2 can be continuously pushed back and forth by the air force, so that the dust particles deposited in the elastic diaphragm 2 can be continuously guided during pneumatic conveying, so that the dust particles in the ash conveying pipe can always keep flowing, avoiding excessive accumulation in the bend section and causing blockage in the pipe.

[0027] Example 2

[0028] The guide barrel 13 is unstable when it moves, as it is limited by only two guide rods 14. The guide rods 14 are prone to misalignment with the serpentine guide groove 9. Therefore, please refer to [the relevant documentation / reference needed]. Figure 2-6 Based on the first specific embodiment, the guide includes an L-shaped rod 15, a guide barrel 13 with one end open and its depth longer than the length of the drive shaft 8, and two slide plates 12 symmetrically fixedly connected to the two opposite sides of the guide barrel 13. Two slide rails 11 that slide and cooperate with the slide plates 12 are fixedly connected to the surface of the extension platform 10.

[0029] The operation process of this embodiment is as follows: the maximum movement distance of the guide barrel 13 does not exceed the length of the drive shaft 8. When moving, the slide plate 12 on the guide barrel 13 always moves along the slide rail 11 on the extension platform 10, which can limit the movement path of the guide barrel 13 and prevent the guide barrel 13 from deviating from the internal guide rod 14 and serpentine guide groove 9 when moving.

[0030] Example 3

[0031] The curved air vane 7 is driven to rotate by the airflow within the secondary pipe 4. However, the airflow may not be able to precisely target the curved air vane 7, potentially leading to insufficient power and difficulty in rotating it. Therefore, please refer to [the relevant documentation / reference needed]. Figure 1-3 Based on the first specific embodiment, an air guide plate 16 is fixedly connected to the inner wall of the secondary pipe 4. The air guide plate 16 is arc-shaped, and the end of the air guide plate 16 is aligned with the curved part of the arc-shaped air plate 7.

[0032] The operation process of this embodiment is as follows: When the airflow passes through the secondary pipe 4, the air guide plate 16 is set on the arc-shaped air plate 7. After the airflow passes through the air guide plate 16, it can be blown precisely at the curved part of the arc-shaped air plate 7, so that the flowing gas can be accurately blown towards the arc-shaped air plate 7, thereby driving the device.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pneumatic ash conveying pipeline for a thermal power plant, comprising an ash conveying pipe body (1), the ash conveying pipe body (1) comprising a straight pipe section and a bend section, characterized in that: An elastic diaphragm (2) is fixedly connected to the bend of the ash conveying pipe body (1). A connector (3) is fixedly connected to the side of the elastic diaphragm (2). A secondary pipe (4) is connected to the main body of the ash conveying pipe (1). An extension platform (10) parallel to the elastic diaphragm (2) is fixedly connected to the periphery of the secondary pipe (4). A pneumatic drive is rotatably connected inside the extension platform (10). The pneumatic drive includes a rotating shaft (5). The rotating shaft (5) passes through the secondary pipe (4). The rotating shaft (5) is rotatably connected to the extension platform (10). A rotating wheel (6) is fixedly connected to the inner end of the rotating shaft (5) inside the secondary pipe (4). Several arc-shaped wind plates (7) are evenly fixedly connected to the periphery of the rotating wheel (6). A drive shaft (8) is fixedly connected to the other end of the rotating shaft (5). A serpentine guide groove (9) is opened on the drive shaft (8). A guide for pulling the elastic diaphragm (2) is fixedly connected to the side of the connector (3).

2. The pneumatic ash conveying pipeline for a thermal power plant according to claim 1, characterized in that, The guide includes an L-shaped rod (15), which is fixedly connected to the connector (3). A guide barrel (13) is fixedly connected to the side of the L-shaped rod (15), and two guide rods (14) are symmetrically fixedly connected to the guide barrel (13). One end of each of the two guide rods (14) is located in the serpentine guide groove (9).

3. The pneumatic ash conveying pipeline for a thermal power plant according to claim 1, characterized in that, The serpentine guide groove (9) is an annular groove, and the serpentine guide groove (9) includes a left guide section and a right guide section.

4. The pneumatic ash conveying pipeline for a thermal power plant according to claim 2, characterized in that, The guide barrel (13) is open at one end and its depth is longer than the length of the drive shaft (8).

5. A pneumatic ash conveying pipeline for a thermal power plant according to claim 2, characterized in that, The guide barrel (13) has two symmetrically fixedly connected sliding plates (12) on its two opposite sides, and the extension platform (10) has two fixedly connected slide rails (11) that slide in cooperation with the sliding plates (12).

6. The pneumatic ash conveying pipeline for a thermal power plant according to claim 1, characterized in that, The inner wall of the secondary pipe (4) is fixedly connected to an air guide plate (16), which is arc-shaped, and the end of the air guide plate (16) is aligned with the curved part of the arc-shaped air plate (7).

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