Dredging device for long-distance pipeline

Abstract

The long-distance pipeline desilting device comprises a water conveying pipeline, the water conveying pipeline is sequentially provided with a long straight horizontal section, a variable-diameter desilting section and a fluctuating section from left to right, the variable-diameter desilting section of the water conveying pipeline is connected with a first desilting mechanism, and the inner bottom face of the water conveying pipeline is connected with a desilting sensing mechanism. The desilting sensing mechanism is arranged close to the first desilting mechanism, the fluctuating section of the water conveying pipeline is connected with a second desilting mechanism, the inner top face of the water conveying pipeline is connected with a third silt sensor, and the third silt sensor is arranged close to the second desilting mechanism. According to the utility model, the deposited silt in the pipeline is discharged into the desilting basin by utilizing the energy of the pressure flow and the gravity action of the silt without the help of other external actions, so that the device is a green and economical desilting and desilting device; the two desilting basins are independently arranged at the sediment deposition position of the pipeline, sediment discharge does not affect each other, the desilting basins are arranged according to the sediment deposition position in the pipeline, and the application range is wide.

Description

Technical Field

[0001] This utility model belongs to the technical field of equipment for preventing and reducing siltation in pipelines, specifically relating to a dredging device for long-distance pipelines. Background Technology

[0002] Long-distance pressurized pipeline water transfer is a crucial means of alleviating regional water supply and demand imbalances and optimizing water resource allocation. During water transfer, the pipeline route is long and subject to significant elevation variations due to terrain. When the pipeline is in normal operation, high-sediment-laden water flows into it. Due to the mismatch between water flow velocity and sediment settling, sediment accumulates in the long, straight horizontal sections. Furthermore, after water supply is interrupted, the sediment-laden water in the undulating sections cannot be directly discharged, leading to further sediment accumulation. This sediment buildup significantly impacts the pipeline's water transfer efficiency, increases costs, and intensifies erosion. Research indicates that sediment accumulation in long-distance water transfer pipelines typically occurs at the beginning of the long, straight horizontal sections and the rising sections. Therefore, effectively addressing sediment accumulation at the beginning of the long, straight horizontal sections and the rising sections during water transfer, preventing sediment buildup within the pipeline, and avoiding a decline in the pipeline's water supply reliability due to sediment accumulation are key concerns in the field of pipeline water transfer technology. Utility Model Content

[0003] The purpose of this invention is to provide a dredging device for long-distance pipelines, which can remove silt and sand accumulated in long-distance water transmission pipelines.

[0004] The technical solution adopted by this utility model is a dredging device for long-distance pipelines, including a water conveying pipeline. The water conveying pipeline is arranged from left to right as a long straight horizontal section, a variable diameter sedimentation section, and an undulating section. The variable diameter sedimentation section of the water conveying pipeline is connected to a first sediment discharge mechanism. The inner bottom surface of the water conveying pipeline is connected to a sedimentation sensing mechanism, which is located close to the first sediment discharge mechanism. The undulating section of the water conveying pipeline is connected to a second sediment discharge mechanism. The inner top surface of the water conveying pipeline is connected to a third sediment sensor, which is located close to the second sediment discharge mechanism.

[0005] The features of this utility model also include:

[0006] The sedimentation sensing mechanism includes a sedimentation plate, a spring connected to the bottom surface of the sedimentation plate, and the end of the spring away from the sedimentation plate connected to the inner bottom surface of the water supply pipe. Several pressure sensors are evenly connected to the inner bottom surface of the water supply pipe along its length, and each pressure sensor is located directly below the sedimentation plate.

[0007] Two springs are used, with each spring positioned near one side of the sedimentation plate. Each pressure sensor is positioned between the two springs.

[0008] The first sand discharge mechanism includes a sand settling pipe connected to a water supply pipe. The connection point between the sand settling pipe and the water supply pipe is located near the sand settling plate. The end of the sand settling pipe away from the water supply pipe is connected to a first sand settling tank. A first sediment sensor is connected to the inner top surface of the first sand settling tank. An overflow wall is connected to the inner bottom surface of the first sand settling tank. A first sand discharge pipe is connected to the bottom surface of the first sand settling tank. A first sand discharge valve is connected to the body of the first sand discharge pipe.

[0009] The sedimentation pipe is connected to a first valve, and a first sediment sensor and an overflow wall are respectively set on both sides of the sedimentation pipe. The height of the overflow wall is 4 / 5 of the height of the first sedimentation tank.

[0010] The second sand discharge mechanism includes a connecting pipe that is connected to a water supply pipe. The connection point between the connecting pipe and the water supply pipe is located near the third sediment sensor. The body of the connecting pipe is connected to a second sedimentation tank. The inner bottom surface of the second sedimentation tank is connected to a second overflow wall. The inner top surface of the second sedimentation tank is connected to a second sediment sensor. The bottom of the second sedimentation tank is connected to a second sand discharge pipe. The body of the second sand discharge pipe is connected to a second sand discharge valve.

[0011] The connecting pipe is connected to a second valve. The connecting pipe has a louvered sludge inlet. The end of the connecting pipe away from the water supply pipe has a water inlet. The second sludge sensor is located between the louvered sludge inlet and the water inlet.

[0012] The height of the louvered sludge inlet should not be lower than the inner bottom surface of the connecting pipe.

[0013] The beneficial effects of this utility model are:

[0014] This utility model relates to a long-distance pipeline dredging device. The discharge of silt and sand in the pipeline utilizes the energy of the pressurized flow itself and the gravity of the silt to enter the sedimentation tank, without relying on other external forces. It is a green and economical silt removal device. Two sedimentation tanks are set up separately at the silt accumulation location in the pipeline, and the silt discharge does not affect each other. The arrangement is based on the location of silt accumulation in the pipeline, and the device has a wide range of applications. An inlet is set above the clear water pool of the sedimentation tank to prevent the water flow from hitting the wall and rebounding to the valve pipeline outlet, which would affect the outlet silt discharge and the silt movement at the louvered inlet. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the dredging device for long-distance pipelines according to this utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure of the first sand-discharging mechanism in the long-distance pipeline dredging device of this utility model;

[0017] Figure 3 This is a cross-sectional view of the second sand-discharging mechanism in the dredging device for long-distance pipelines of this utility model;

[0018] Figure 4 This is a side view of the second sand-discharging mechanism in the long-distance pipeline dredging device of this utility model;

[0019] Figure 5 This is a schematic diagram of the connection structure of the louvered sludge inlet in the sludge dredging device for long-distance pipelines of this utility model.

[0020] In the diagram: 1. Water supply pipe, 2. Third sediment sensor, 3. Sedimentation plate, 4. Spring, 5. Pressure sensor, 6. Sedimentation pipe, 7. First sedimentation tank, 8. First sediment sensor, 9. Overflow wall, 10. First sand discharge pipe, 11. First sand discharge valve, 12. First valve, 13. Connecting pipe, 14. Second overflow wall, 15. Second sediment sensor, 16. Second sand discharge pipe, 17. Second sand discharge valve, 18. Second valve, 19. Louvered sediment inlet, 20. Water inlet, 21. Second sedimentation tank. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0022] This utility model provides a dredging device for long-distance pipelines, such as... Figure 1 As shown, the system includes a water conveyance pipeline 1, which is configured from left to right as a long straight horizontal section, a variable diameter sedimentation section, and an undulating section. The variable diameter sedimentation section of the water conveyance pipeline 1 is connected to a first sediment discharge mechanism. The inner bottom surface of the water conveyance pipeline 1 is connected to a sedimentation sensing mechanism, which is located close to the first sediment discharge mechanism. The undulating section of the water conveyance pipeline 1 is connected to a second sediment discharge mechanism. The inner top surface of the water conveyance pipeline 1 is connected to a third sediment sensor 2, which is located close to the second sediment discharge mechanism. The variable-diameter sedimentation section is also long, straight, and horizontal. There is a height difference between the variable-diameter sedimentation section and the long, straight horizontal section. The variable-diameter sedimentation section is slightly higher than the long, straight horizontal section. The sediment-laden water flows in from the left side of the long, straight horizontal section of the water conveyance pipeline 1 and then enters the variable-diameter sedimentation section. The cross-sectional area increases, and the flow velocity of the sediment-laden water decreases, providing more time for suspended sediment to settle. This can greatly reduce the sediment content in the water flow. At the same time, the height difference between the inlet position of the variable-diameter sedimentation section and the long, straight horizontal section can intercept some of the sediment in the water flow. The sediment is deposited in the water flow of the variable-diameter sedimentation section. After passing through the first sediment discharge mechanism, the sediment is separated from the water and discharged. The water flow enters the undulating section after passing through the variable-diameter sedimentation section. Sediment is deposited at the starting position of the rise in the undulating section. After passing through the second sediment discharge mechanism, the sediment is separated from the water and discharged.

[0023] Example 1

[0024] The dredging device for long-distance pipelines includes a water conveyance pipeline 1, which is configured from left to right as a long straight horizontal section, a variable diameter sedimentation section, and an undulating section. The variable diameter sedimentation section of the water conveyance pipeline 1 is connected to a first sediment discharge mechanism. The bottom surface of the water conveyance pipeline 1 is connected to a sedimentation sensing mechanism, which is located close to the first sediment discharge mechanism. The undulating section of the water conveyance pipeline 1 is connected to a second sediment discharge mechanism. The top surface of the water conveyance pipeline 1 is connected to a third sediment sensor 2, which is located close to the second sediment discharge mechanism.

[0025] like Figure 2 As shown, the sedimentation sensing mechanism includes a sedimentation plate 3, with a spring 4 connected to the bottom surface of the sedimentation plate 3. The end of the spring 4 away from the sedimentation plate 3 is connected to the inner bottom surface of the water conveyance pipe 1. Several pressure sensors 5 are evenly connected along the length of the inner bottom surface of the water conveyance pipe 1, with each pressure sensor 5 positioned directly below the sedimentation plate 3. Sediment in the sediment-laden water flow of the variable-diameter sedimentation section of the water conveyance pipe 1 is deposited and falls onto the sedimentation plate 3. The sedimentation plate 3 compresses the spring 4 and touches the pressure sensor 5. The pressure sensor 5 receives the compression signal and then activates the first sediment discharge mechanism to discharge the sediment.

[0026] Example 2

[0027] The dredging device for long-distance pipelines includes a water conveyance pipeline 1, which is configured from left to right as a long straight horizontal section, a variable diameter sedimentation section, and an undulating section. The variable diameter sedimentation section of the water conveyance pipeline 1 is connected to a first sediment discharge mechanism. The bottom surface of the water conveyance pipeline 1 is connected to a sedimentation sensing mechanism, which is located close to the first sediment discharge mechanism. The undulating section of the water conveyance pipeline 1 is connected to a second sediment discharge mechanism. The top surface of the water conveyance pipeline 1 is connected to a third sediment sensor 2, which is located close to the second sediment discharge mechanism.

[0028] The sedimentation sensing mechanism includes a sedimentation plate 3, a spring 4 connected to the bottom surface of the sedimentation plate 3, and the end of the spring 4 away from the sedimentation plate 3 connected to the inner bottom surface of the water supply pipe 1. Several pressure sensors 5 are evenly connected to the inner bottom surface of the water supply pipe 1 along the extended length direction, and each pressure sensor 5 is located directly below the sedimentation plate 3.

[0029] Two springs 4 are used, one on each side of the sedimentation plate 3. Each pressure sensor 5 is positioned between the two springs 4. The two springs 4 support the sedimentation plate 3. When the water flows normally, the sedimentation plate 3 does not contact the pressure sensor 5. When the sedimentation plate 3 contacts the pressure sensor 5, it indicates that there is too much sediment, and the first sediment discharge mechanism is activated.

[0030] Example 3

[0031] The dredging device for long-distance pipelines includes a water conveyance pipeline 1, which is configured from left to right as a long straight horizontal section, a variable diameter sedimentation section, and an undulating section. The variable diameter sedimentation section of the water conveyance pipeline 1 is connected to a first sediment discharge mechanism. The bottom surface of the water conveyance pipeline 1 is connected to a sedimentation sensing mechanism, which is located close to the first sediment discharge mechanism. The undulating section of the water conveyance pipeline 1 is connected to a second sediment discharge mechanism. The top surface of the water conveyance pipeline 1 is connected to a third sediment sensor 2, which is located close to the second sediment discharge mechanism.

[0032] The sedimentation sensing mechanism includes a sedimentation plate 3, a spring 4 connected to the bottom surface of the sedimentation plate 3, and the end of the spring 4 away from the sedimentation plate 3 connected to the inner bottom surface of the water supply pipe 1. Several pressure sensors 5 are evenly connected to the inner bottom surface of the water supply pipe 1 along the extended length direction, and each pressure sensor 5 is located directly below the sedimentation plate 3.

[0033] Two springs 4 are set, with the two springs 4 positioned close to the two sides of the sedimentation plate 3, and each pressure sensor 5 is positioned between the two springs 4.

[0034] The first sand discharge mechanism includes a sedimentation pipe 6, which is connected to a water supply pipe 1. The connection point between the sedimentation pipe 6 and the water supply pipe 1 is located near the sedimentation plate 3. The end of the sedimentation pipe 6 away from the water supply pipe 1 is connected to a first sedimentation tank 7. A first sediment sensor 8 is connected to the inner top surface of the first sedimentation tank 7. An overflow wall 9 is connected to the inner bottom surface of the first sedimentation tank 7. A first sand discharge pipe 10 is connected to the bottom surface of the first sedimentation tank 7. A first sand discharge valve 11 is connected to the body of the first sand discharge pipe 10. The sediment sensing height of the first sediment sensor 8 is lower than that of the overflow wall 9. The sedimentation pipe 6 is connected to the first sedimentation tank 7. After the sand-laden water flows into the first sedimentation tank 7 from the sedimentation pipe 6, the sediment settles. The clear water enters the clear water pool formed between the overflow wall 9 and the inner wall of the first sedimentation tank 7, which can be directly used for farmland irrigation. When the sediment settles to the sediment sensing height of the first sediment sensor 8, the first sand discharge valve 11 is opened, and the sediment is discharged from the first sand discharge pipe 10.

[0035] The sedimentation pipe 6 is connected to a first valve 12. A first sediment sensor 8 and an overflow wall 9 are respectively located on both sides of the sedimentation pipe 6. The height of the overflow wall 9 is 4 / 5 of the height of the first sedimentation tank 7. When the sedimentation plate 3 contacts the pressure sensor 5, the first valve 12 opens, and the sediment-laden water flows from the sedimentation pipe 6 into the first sedimentation tank 7. The height of the overflow wall 9 is 4 / 5 of the height of the first sedimentation tank 7, ensuring that mud-water separation can be achieved.

[0036] Example 4

[0037] The dredging device for long-distance pipelines includes a water conveyance pipeline 1, which is configured from left to right as a long straight horizontal section, a variable diameter sedimentation section, and an undulating section. The variable diameter sedimentation section of the water conveyance pipeline 1 is connected to a first sediment discharge mechanism. The bottom surface of the water conveyance pipeline 1 is connected to a sedimentation sensing mechanism, which is located close to the first sediment discharge mechanism. The undulating section of the water conveyance pipeline 1 is connected to a second sediment discharge mechanism. The top surface of the water conveyance pipeline 1 is connected to a third sediment sensor 2, which is located close to the second sediment discharge mechanism.

[0038] The sedimentation sensing mechanism includes a sedimentation plate 3, a spring 4 connected to the bottom surface of the sedimentation plate 3, and the end of the spring 4 away from the sedimentation plate 3 connected to the inner bottom surface of the water supply pipe 1. Several pressure sensors 5 are evenly connected to the inner bottom surface of the water supply pipe 1 along the extended length direction, and each pressure sensor 5 is located directly below the sedimentation plate 3.

[0039] Two springs 4 are set, with the two springs 4 positioned close to the two sides of the sedimentation plate 3, and each pressure sensor 5 is positioned between the two springs 4.

[0040] The first sand discharge mechanism includes a sand settling pipe 6, which is connected to a water supply pipe 1. The connection point between the sand settling pipe 6 and the water supply pipe 1 is located near the sand settling plate 3. The end of the sand settling pipe 6 away from the water supply pipe 1 is connected to a first sand settling tank 7. The inner top surface of the first sand settling tank 7 is connected to a first sediment sensor 8. The inner bottom surface of the first sand settling tank 7 is connected to an overflow wall 9. The bottom surface of the first sand settling tank 7 is connected to a first sand discharge pipe 10. The body of the first sand discharge pipe 10 is connected to a first sand discharge valve 11.

[0041] The sedimentation pipe 6 is connected to a first valve 12. A first sediment sensor 8 and an overflow wall 9 are respectively set on both sides of the sedimentation pipe 6. The height of the overflow wall 9 is 4 / 5 of the height of the first sedimentation tank 7.

[0042] like Figure 3-4As shown, the second sand discharge mechanism includes a connecting pipe 13, which is connected to the water supply pipe 1. The connection point between the connecting pipe 13 and the water supply pipe 1 is located near the third sediment sensor 2. The body of the connecting pipe 13 is connected to a second sedimentation tank 21. The inner bottom surface of the second sedimentation tank 21 is connected to a second overflow wall 14. The inner top surface of the second sedimentation tank 21 is connected to a second sediment sensor 15. The bottom of the second sedimentation tank 21 is connected to a second sand discharge pipe 16. The body of the second sand discharge pipe 16 is connected to a second sand discharge valve 17. The connection point between the connecting pipe 13 and the water conveyance pipe 1 is set at the starting position of the rising section of the undulating section of the water conveyance pipe 1. The sand-laden water flows through the undulating section and sediment is deposited at the starting position of the rising section. When the third sediment sensor 2 senses that the sediment has reached a certain height, the sand-laden water flows from the connecting pipe 13 into the second sedimentation tank 21, where sediment is deposited. The separated clear water enters the clear water pool formed between the second overflow wall 14 and the inner wall of the second sedimentation tank 21. The height of the second overflow wall 14 is 4 / 5 of the height of the second sedimentation tank 21. When the second sediment sensor 15 senses that the sediment has reached a certain height, the second sand discharge valve 17 is opened, and the sediment is discharged from the second sand discharge pipe 16.

[0043] Example 5

[0044] The dredging device for long-distance pipelines includes a water conveyance pipeline 1, which is configured from left to right as a long straight horizontal section, a variable diameter sedimentation section, and an undulating section. The variable diameter sedimentation section of the water conveyance pipeline 1 is connected to a first sediment discharge mechanism. The bottom surface of the water conveyance pipeline 1 is connected to a sedimentation sensing mechanism, which is located close to the first sediment discharge mechanism. The undulating section of the water conveyance pipeline 1 is connected to a second sediment discharge mechanism. The top surface of the water conveyance pipeline 1 is connected to a third sediment sensor 2, which is located close to the second sediment discharge mechanism.

[0045] The sedimentation sensing mechanism includes a sedimentation plate 3, a spring 4 connected to the bottom surface of the sedimentation plate 3, and the end of the spring 4 away from the sedimentation plate 3 connected to the inner bottom surface of the water supply pipe 1. Several pressure sensors 5 are evenly connected to the inner bottom surface of the water supply pipe 1 along the extended length direction, and each pressure sensor 5 is located directly below the sedimentation plate 3.

[0046] Two springs 4 are set, with the two springs 4 positioned close to the two sides of the sedimentation plate 3, and each pressure sensor 5 is positioned between the two springs 4.

[0047] The first sand discharge mechanism includes a sand settling pipe 6, which is connected to a water supply pipe 1. The connection point between the sand settling pipe 6 and the water supply pipe 1 is located near the sand settling plate 3. The end of the sand settling pipe 6 away from the water supply pipe 1 is connected to a first sand settling tank 7. The inner top surface of the first sand settling tank 7 is connected to a first sediment sensor 8. The inner bottom surface of the first sand settling tank 7 is connected to an overflow wall 9. The bottom surface of the first sand settling tank 7 is connected to a first sand discharge pipe 10. The body of the first sand discharge pipe 10 is connected to a first sand discharge valve 11.

[0048] The sedimentation pipe 6 is connected to a first valve 12. A first sediment sensor 8 and an overflow wall 9 are respectively set on both sides of the sedimentation pipe 6. The height of the overflow wall 9 is 4 / 5 of the height of the first sedimentation tank 7.

[0049] The second sand discharge mechanism includes a connecting pipe 13, which is connected to the water supply pipe 1. The connection point between the connecting pipe 13 and the water supply pipe 1 is located near the third sediment sensor 2. The body of the connecting pipe 13 is connected to the second sedimentation tank 21. The inner bottom surface of the second sedimentation tank 21 is connected to the second overflow wall 14. The inner top surface of the second sedimentation tank 21 is connected to the second sediment sensor 15. The bottom of the second sedimentation tank 21 is connected to the second sand discharge pipe 16. The body of the second sand discharge pipe 16 is connected to the second sand discharge valve 17.

[0050] A second valve 18 is connected to the body of the connecting pipe 13. A louvered sludge inlet 19 is provided in the body of the connecting pipe 13, and an inlet 20 is provided at the end of the connecting pipe 13 away from the water supply pipe 1. A second sludge sensor 15 is located between the louvered sludge inlet 19 and the inlet 20. When the third sludge sensor 2 detects that the sludge in the sandy water has settled to a certain height, the second valve 18 opens, and the water flows through the louvered sludge inlet 19 into the second sedimentation tank 21. The louvers of the louvered sludge inlet 19 intercept some of the sludge, and the filtered water flows directly into the clear water tank of the second sedimentation tank 21 from the inlet 20.

[0051] Example 6

[0052] The dredging device for long-distance pipelines includes a water conveyance pipeline 1, which is configured from left to right as a long straight horizontal section, a variable diameter sedimentation section, and an undulating section. The variable diameter sedimentation section of the water conveyance pipeline 1 is connected to a first sediment discharge mechanism. The bottom surface of the water conveyance pipeline 1 is connected to a sedimentation sensing mechanism, which is located close to the first sediment discharge mechanism. The undulating section of the water conveyance pipeline 1 is connected to a second sediment discharge mechanism. The top surface of the water conveyance pipeline 1 is connected to a third sediment sensor 2, which is located close to the second sediment discharge mechanism.

[0053] The sedimentation sensing mechanism includes a sedimentation plate 3, a spring 4 connected to the bottom surface of the sedimentation plate 3, and the end of the spring 4 away from the sedimentation plate 3 connected to the inner bottom surface of the water supply pipe 1. Several pressure sensors 5 are evenly connected to the inner bottom surface of the water supply pipe 1 along the extended length direction, and each pressure sensor 5 is located directly below the sedimentation plate 3.

[0054] Two springs 4 are set, with the two springs 4 positioned close to the two sides of the sedimentation plate 3, and each pressure sensor 5 is positioned between the two springs 4.

[0055] The first sand discharge mechanism includes a sand settling pipe 6, which is connected to a water supply pipe 1. The connection point between the sand settling pipe 6 and the water supply pipe 1 is located near the sand settling plate 3. The end of the sand settling pipe 6 away from the water supply pipe 1 is connected to a first sand settling tank 7. The inner top surface of the first sand settling tank 7 is connected to a first sediment sensor 8. The inner bottom surface of the first sand settling tank 7 is connected to an overflow wall 9. The bottom surface of the first sand settling tank 7 is connected to a first sand discharge pipe 10. The body of the first sand discharge pipe 10 is connected to a first sand discharge valve 11.

[0056] The sedimentation pipe 6 is connected to a first valve 12. A first sediment sensor 8 and an overflow wall 9 are respectively set on both sides of the sedimentation pipe 6. The height of the overflow wall 9 is 4 / 5 of the height of the first sedimentation tank 7.

[0057] The second sand discharge mechanism includes a connecting pipe 13, which is connected to the water supply pipe 1. The connection point between the connecting pipe 13 and the water supply pipe 1 is located near the third sediment sensor 2. The body of the connecting pipe 13 is connected to the second sedimentation tank 21. The inner bottom surface of the second sedimentation tank 21 is connected to the second overflow wall 14. The inner top surface of the second sedimentation tank 21 is connected to the second sediment sensor 15. The bottom of the second sedimentation tank 21 is connected to the second sand discharge pipe 16. The body of the second sand discharge pipe 16 is connected to the second sand discharge valve 17.

[0058] The connecting pipe 13 is connected to a second valve 18. The connecting pipe 13 has a louvered sludge inlet 19. The end of the connecting pipe 13 away from the water supply pipe 1 has a water inlet 20. The second sludge sensor 15 is located between the louvered sludge inlet 19 and the water inlet 20.

[0059] The height of the louvered screen at the sediment inlet 19 is not lower than the inner bottom surface of the connecting pipe 13. The angle between the louvered screen at the sediment inlet 19 and the water flow direction is not greater than 90°, and the height of the louvered screen is higher than the inner bottom surface of the connecting pipe 13, ensuring that the louvered screen at the sediment inlet 19 plays a role in intercepting sediment. Furthermore, the portion connecting the connecting pipe 13 to the second sedimentation tank 21 is designed with a cuboid structure, such as... Figure 5 As shown, after the high sediment load water flows into the cuboid structure, the flow velocity decreases rapidly, which is conducive to the rapid settling of sediment into the second sedimentation tank 21.

[0060] The working principle of this utility model's long-distance pipeline dredging device is as follows:

[0061] The sand-laden water flows in from the left side of the long, straight horizontal section of the water conveyance pipe 1, and then enters the variable-diameter sedimentation section. The cross-sectional area increases, and the flow velocity of the sand-laden water decreases, providing more time for suspended sediment to settle. The sediment settles and falls onto the sedimentation plate 3. The sedimentation plate 3 compresses the spring 4 and touches the pressure sensor 5, indicating that too much sediment has been deposited. The first valve 12 is opened, and the sand-laden water flows into the first sedimentation tank 7 from the sedimentation pipe 6. The sediment settles, and the clear water enters the clear water pool formed between the overflow wall 9 and the inner wall of the first sedimentation tank 7, which can be directly used for farmland irrigation. When the sediment settles to the sediment sensing height of the first sediment sensor 8, the first sand discharge valve 11 is opened, and the sediment is discharged from the first sand discharge pipe 10. When the third sediment sensor 2 detects that the sediment has reached a certain height, the second valve 18 is opened. The sediment-laden water flows through the connecting pipe 13 and enters the second sedimentation tank 21 through the louvered sediment inlet 19. The angle between the louvered ...

[0062] This utility model relates to a dredging device for long-distance pipelines. It involves installing variable-diameter sedimentation sections and third sediment sensors at the starting points of both the straight horizontal section and the undulating section (areas prone to sediment accumulation) of the water pipeline 1. When sediment accumulates in the variable-diameter sedimentation section, and the accumulation reaches the maximum limit set by the pressure sensor, the first valve opens, allowing the sediment-laden water to flow into the first sedimentation tank. When the third sediment sensor detects sediment accumulation at the starting point of the undulating section, the second valve opens, allowing the sediment to pass through a louvered screen into the second sedimentation tank. The filtered water then flows into a clear water tank through the inlet. When the sediment in both sedimentation tanks reaches the sediment height sensor, the discharge valve opens to discharge the sediment, thus achieving dredging and sediment removal within the pipeline. The sediment discharged by the discharge valve can be reused as building material after simple treatment. The water in the clear water tank has a low sediment content and can be directly used for farmland irrigation. This device is flexible in design and simple to operate. It can be used not only for the treatment of silt in pipelines in water diversion projects, but also for solid-liquid separation in material transportation and in the field of oil extraction, and has broad and promising application prospects.

Claims

1. A device for dredging long distance pipelines, characterized in that, The utility model provides a water delivery pipeline (1), the water delivery pipeline (1) is arranged from left to right as long straight horizontal section, variable diameter sand setting section and undulating section, the variable diameter sand setting section of water delivery pipeline (1) is connected with first sand discharge mechanism, the inner bottom surface of water delivery pipeline (1) is connected with sand setting induction mechanism, sand setting induction mechanism is close to first sand discharge mechanism setting, the undulating section of water delivery pipeline (1) is connected with second sand discharge mechanism, the inner top surface of water delivery pipeline (1) is connected with third silt sensor (2), third silt sensor (2) is close to second sand discharge mechanism setting.

2. The long distance pipeline cleaning apparatus of claim 1, wherein, The sand setting induction mechanism includes a sand setting plate (3), the bottom surface of the sand setting plate (3) is connected with a spring (4), the end of the spring (4) away from the sand setting plate (3) is connected with the inner bottom surface of the water delivery pipeline (1), and the inner bottom surface of the water delivery pipeline (1) is uniformly connected with a plurality of pressure sensors (5) in the length direction, each pressure sensor (5) is arranged directly below the sand setting plate (3).

3. The long distance pipeline cleaning apparatus of claim 2, wherein, The number of springs (4) is two, and the two springs (4) are arranged close to the two sides of the sand setting plate (3) respectively, and each pressure sensor (5) is arranged between the two springs (4).

4. The long distance pipeline pigging apparatus of claim 1, wherein, The first sand discharge mechanism includes a sand setting pipe (6), the sand setting pipe (6) is connected with the water delivery pipeline (1), the connecting point of the sand setting pipe (6) and the water delivery pipeline (1) is arranged close to the sand setting plate (3), the end of the sand setting pipe (6) away from the water delivery pipeline (1) is connected with a first sand setting tank (7), the inner top surface of the first sand setting tank (7) is connected with a first silt sensor (8), the inner bottom surface of the first sand setting tank (7) is connected with an overflow wall (9), the bottom surface of the first sand setting tank (7) is connected with a first sand discharge pipe (10), and the pipe body of the first sand discharge pipe (10) is connected with a first sand discharge valve (11).

5. The long distance pipeline pigging apparatus of claim 4, wherein, The pipe body of the sand setting pipe (6) is connected with a first valve (12), the first silt sensor (8) and the overflow wall (9) are arranged on the two sides of the sand setting pipe (6) respectively, and the height of the overflow wall (9) is 4 / 5 of the height of the first sand setting tank (7).

6. The long distance pipeline pigging apparatus of claim 1, wherein, The second sand discharge mechanism includes a communication pipe (13), the communication pipe (13) is connected with the water delivery pipeline (1), the connecting point of the communication pipe (13) and the water delivery pipeline (1) is arranged close to the third silt sensor (2), the pipe body of the communication pipe (13) is connected with a second sand setting tank (21), the inner bottom surface of the second sand setting tank (21) is connected with a second overflow wall (14), the inner top surface of the second sand setting tank (21) is connected with a second silt sensor (15), the bottom of the second sand setting tank (21) is connected with a second sand discharge pipe (16), and the pipe body of the second sand discharge pipe (16) is connected with a second sand discharge valve (17).

7. The long distance pipeline pigging apparatus of claim 6, wherein, The pipe body of the communication pipe (13) is connected with a second valve (18), the pipe body of the communication pipe (13) is provided with a shutter sand inlet (19), the end of the communication pipe (13) away from the water conveying pipe (1) is provided with a water inlet (20), and the second sand sensor (15) is arranged between the shutter sand inlet (19) and the water inlet (20).

8. The long distance pipeline cleaning apparatus of claim 7, wherein, The height of the shutter at the shutter sand inlet (19) is not less than the inner bottom surface of the communication pipe (13).

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