An automatic dredging device for a reservoir area

Abstract

The application discloses a kind of automatic dredging device of reservoir area, including hull, several sand pumps, silt excavating device;Silt excavating device is connected below the bottom of hull by lifting mechanism;Sand pump is arranged in hull, and the inlet connecting end of sand pump extends into the sand suction pipe in water.This device can be used for the dredging of many sand-containing operating environment of hydropower station reservoir area, and the silt excavating device is used to excavate and lift the silt in the working area, so that the sand pump can work efficiently.The device is also provided with the corresponding device for automatically controlling dredging work, which has the operating characteristics of multifunctional information, and realizes automatic dredging of reservoir area.

Description

Technical Field

[0001] This invention relates to an automated dredging device for reservoir areas. Background Technology

[0002] With the rapid advancement of industrialization and urbanization, pumping stations and hydropower stations play a vital role in energy supply and water resource management. Typically, reservoirs are constructed within these stations to ensure their safe operation. However, rivers in most parts of my country have high sediment content, with pumping stations and hydropower stations in the Yellow River basin generally containing sediment levels exceeding 10 kg / m³. 3 As a result of long-term operation, the reservoir area often faces the problem of siltation. The silt will gradually settle at the bottom of the reservoir area, forming siltation. Siltation will bring a series of problems, mainly the following: (1) The water storage capacity of the reservoir area will decrease. After siltation, the effective water storage capacity of the reservoir area will be reduced; (2) It will affect the flow rate of the unit. Siltation will directly affect the flow capacity, change the upstream and downstream water levels, reduce the pumping capacity of the water pump, and reduce the power generation of the turbine; (3) It will affect the safe operation of the unit. After siltation in the intake pool, the intake structure will be changed, which will cause vortices in the reservoir area, affect the cavitation performance of the unit, and increase the silt content in the unit, causing the unit to wear out quickly; (4) Siltation will also change the shape and path of the water flow in the reservoir area, resulting in unstable water level fluctuations and affecting water quality.

[0003] To address the problem of siltation in reservoirs, common dredging measures include manual and mechanical dredging. Manual dredging primarily removes accumulated silt through manual dredging and excavation; mechanical dredging utilizes various equipment, such as excavators and cofferdams, to remove silt. However, these traditional dredging devices all have several drawbacks. First, because dredging operations typically need to be conducted underwater, operators face significant safety risks. Second, manual dredging is inefficient, requires substantial manpower and resources, and is time-consuming. Furthermore, while mechanical dredging improves efficiency, it also causes noise pollution and energy consumption, impacting the environment. Therefore, it is necessary to propose a new type of reservoir dredging device to achieve efficient, low-cost, and low-pollution automated siltation in reservoirs, providing more reliable and sustainable support for water resource management and energy supply. Summary of the Invention

[0004] Purpose of the invention: In view of the above-mentioned prior art, an automated dredging device for reservoir areas is proposed, which can effectively remove silt and sand.

[0005] Technical solution: An automated dredging device for reservoir areas includes a hull, several sand pumps, and a silt dredging device; the silt dredging device is connected to the bottom of the hull via a lifting mechanism; the sand pumps are installed inside the hull, and the inlet end of the sand pump is connected to a suction pipe that extends into the water.

[0006] Furthermore, the silt dredging device includes a dual-shaft motor, which is fixed inside a middle sleeve. The middle sleeve is fixed below the bottom of the hull by the first lifting bracket of the lifting mechanism. Digging sections are symmetrically arranged on both sides of the dual-shaft motor.

[0007] The excavating unit includes a cylindrical tube closed at one end. A rotating shaft is provided inside the cylindrical tube. The rotating shaft is rotatably connected to the inner wall of the cylindrical tube through a first bearing. A clutch structure is also provided between the rotating shaft and the inner wall of the cylindrical tube. The clutch structure consists of several arc-shaped plates evenly distributed along the circumference. Each arc-shaped plate is connected to the rotating shaft by a spring. When the rotating shaft is not rotating, there is a gap between the arc-shaped plate and the inner wall of the cylindrical tube. One end of the rotating shaft is connected to one output shaft of the dual-axis motor through a torque meter. One open end of the cylindrical tube is rotatably connected to one end of the intermediate sleeve through an end face sealing structure. Several buckets are fixed on the outer wall of the cylindrical tube.

[0008] Furthermore, the lifting mechanism also includes a vertically downward second lifting bracket, and a second bearing is provided on the outer side of the cylindrical tube of the silt excavation device. The silt excavation device is connected to the second lifting bracket through the second bearing.

[0009] Furthermore, several sets of buckets are arranged axially at intervals on the outer wall of the cylindrical tube, with several buckets in each set evenly distributed around the circumference, and an inlet of the sand suction pipe is distributed in the dust-generating area of ​​each set of buckets.

[0010] Furthermore, a sediment concentration detector is also installed below the bottom of the hull. The sediment concentration detector and the torque meter are both connected to a controller. After the dual-axis motor has been running for a period of time, when the torque meter detects that the torque has dropped to a preset threshold, the controller controls the dual-axis motor to stop working. When the sediment concentration detector detects that the sediment concentration in the area is less than a preset value, the controller controls the sand pump to stop working and controls the lifting mechanism to move the sediment dredging device upward.

[0011] Furthermore, the hull is also equipped with a satellite positioning system connected to the controller, and the controller is also equipped with a dredging path setting system. After the sand pump stops working, the controller controls the hull to sail to the next working area according to the preset dredging path, and then controls the dual-shaft motor to start and controls the lifting mechanism to move the mud and sand excavation device downward.

[0012] Beneficial effects: The present invention provides an automated dredging device for reservoir areas, which is used for mobile dredging in pumping stations and hydropower station reservoir areas. It has multi-functional and information-based operation characteristics, realizing intelligent and automated dredging of reservoir areas. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an automated dredging device for reservoirs according to the present invention;

[0014] Figure 2 This is a schematic diagram of the clutch structure in the device of the present invention;

[0015] Figure 3 This is a schematic diagram of the drive unit structure of the mud and sand excavation device in the present invention. Implementation

[0016] The invention will now be further explained with reference to the accompanying drawings.

[0017] like Figure 1 As shown, an automated dredging device for a reservoir includes a hull 1, on which a propeller is mounted, and inside the hull are necessary devices such as an electrical system and a controller. Four sand-dredging pumps 2 are fixed inside the hull 1, and the inlet of each sand-dredging pump 2 is connected to a suction pipe 3 whose end extends into the water. A dredging device is connected to the bottom of the hull 1 via a lifting mechanism.

[0018] The silt dredging device includes a dual-shaft motor 4, such as Figure 3 As shown, the dual-axis motor 4 is fixed inside the intermediate sleeve 5 via the connector 16, and the intermediate sleeve 5 is fixed below the bottom of the hull 1 via the first lifting bracket 6 of the lifting mechanism. Excavation sections are symmetrically arranged on both sides of the dual-axis motor 4.

[0019] The excavation unit includes a cylindrical tube 7 closed at one end. A rotating shaft 8 is installed inside the cylindrical tube 7. The rotating shaft 8 is rotatably connected to the inner wall of the cylindrical tube 7 via two spaced-apart first bearings 9. A clutch structure is also provided between the rotating shaft 8 and the inner wall of the cylindrical tube 7. For example... Figure 2 As shown, the clutch structure consists of three arc-shaped plates 10 evenly distributed along the circumference. Each arc-shaped plate 10 is connected to the rotating shaft 8 by a spring 11. When the rotating shaft 8 is not rotating, there is a gap between the arc-shaped plate 10 and the inner wall of the cylindrical tube 7.

[0020] One end of the rotating shaft 8 is connected to the output shaft of the dual-shaft motor 4 via a torque meter 17. The open end of the cylindrical cylinder 7 is rotatably connected to one end of the intermediate sleeve 5 via an end-face sealing structure. The end-face seal provides both good sealing performance and relatively smooth rotation between the cylindrical cylinder 7 and the intermediate sleeve 5. As an example, a packing seal is used between the dynamic and static interfaces of the end-face seal. The packing seal mainly consists of packing, a packing box, and packing fixing components. Pre-tightening generates a clamping force between the packing and the rotating cylindrical cylinder 7 and intermediate sleeve 5. The packing material is flexible graphite, which is pre-formed into a ring shape. The packing box is used to house the packing. The packing fixing components include a gland, bolts, and springs, which are used to pre-tighten the packing. The springs provide compensation. After the packing is installed in the packing cavity, it is axially compressed by the gland screws. When there is relative movement between the outer shell and the packing, the plasticity of the packing causes it to generate a radial force and come into close contact with the outer shell. At the same time, the lubricant impregnated in the packing is squeezed out, forming an oil film between the contact surfaces, thereby achieving a seal.

[0021] Several buckets 12 are fixed on the outer wall of the cylindrical tube 7. In this embodiment, four sets of buckets 12 are arranged axially on the outer wall of the cylindrical tube 7. Five buckets 12 in each set are evenly distributed along the circumference. An inlet of a sand suction pipe 3 is distributed in the dust-generating area of ​​each set of buckets 12.

[0022] The lifting mechanism also includes second lifting supports 13 that are vertically downward at both ends of the hull 1. A second bearing 14 is provided on the outer side of the cylindrical tube 7 of the silt dredging device, and the silt dredging device is connected to the second lifting supports 13 through the second bearing 14. Through the coordinated work of the first lifting supports 6 and the second lifting supports 13, the silt dredging device can be moved up or down as a whole.

[0023] When the silt dredging device is working, the dredging depth is controlled by lowering the lifting mechanism. When the dual-shaft motor 4 is working, both ends of the motor simultaneously drive the rotating shafts 8 of the two digging sections to rotate. The spring 11 in the clutch structure extends under the centrifugal force generated by the rotation, causing each of the circumferentially arranged arc-shaped plates 10 to contact the inner wall of the cylindrical cylinder 7. This achieves rotation of the cylindrical cylinder 7 through friction, allowing the outerly fixed bucket 12 to effectively dredge and lift the accumulated silt. The lifting direction is directly opposite the inlet of the sand suction pipe 3, facilitating the efficient operation of the sand pump 2. The outlet of the sand pump 2 can be connected to other sand transport vessels or sprayed to the target area using its long-distance dust-spraying capability. The bucket 12 is made of high-strength stainless steel. When the dual-shaft motor 4 stops working, the arc-shaped plates 10 separate from the inner wall of the cylindrical cylinder 7 under the action of the spring 11, and the cylindrical cylinder 7 loses its rotational power. In this invention, this design effectively avoids useless digging motion and protects the safety of the bucket 12 and the dual-shaft motor 4. The main body adopts a cylindrical structure, which results in relatively less resistance in water compared to other shapes such as cuboids or prisms. During maintenance and repair, the excavation sections on both sides can be disassembled as a single, independent component.

[0024] A sediment concentration detector 15 is also installed below the bottom of the hull 1. The sediment concentration detector 15 and the torque meter are both connected to the controller. After the dual-axis motor 4 has been running for a period of time, when the torque meter 17 detects that the torque has dropped to a preset threshold, it indicates that the excavation of the working area has been completed. The controller then controls the dual-axis motor 4 to stop working. At this time, the sand pump 2 continues to work, and when the sediment concentration detector 15 detects that the sediment concentration in the area is less than the preset value, the sand pump 2 is controlled to stop working. This indicates that the dredging work in the local area is completed, and the lifting mechanism is controlled to move the sediment excavation device upward.

[0025] The hull 1 is also equipped with a satellite positioning system connected to the controller, which is also equipped with a dredging path setting system. After the sand pump 2 stops working, the controller controls the hull 1 to move to the next working area according to the preset dredging path, then controls the dual-shaft motor 4 to start, and controls the lifting mechanism to move the dredging device downward, thereby starting the dredging work in that working area. During the process of the hull 1 moving to the next working area, due to the clutch structure designed in this invention, the cylindrical cylinder 7 and the bucket 12 can rotate freely under the action of water flow, reducing the resistance of the hull 1 during the movement.

[0026] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A device for automated dredging of a basin, characterized in that, The utility model relates to a sand dredging ship, including ship body (1), a plurality of sand pump (2), silt excavating device, silt excavating device is connected below the bottom of ship body (1) through elevating system, sand pump (2) is arranged in the ship body, sand pump (2) inlet connection end part is inserted into the sand suction pipe (3) of water, Silt excavating device includes double-shaft motor (4), double-shaft motor (4) is fixed in intermediate sleeve (5), intermediate sleeve (5) is fixed below the bottom of ship body (1) through the first elevating support (6) of elevating system, the both sides of double-shaft motor (4) symmetrically set up excavating part, The excavating part includes a closed cylindrical barrel (7), the cylindrical barrel (7) is provided with a rotating shaft (8), the rotating shaft (8) is rotatably connected with the inner wall of the cylindrical barrel (7) through the first bearing (9), and a clutch structure is further arranged between the rotating shaft (8) and the inner wall of the cylindrical barrel (7), the clutch structure is a plurality of arc plates (10) uniformly distributed along the circumference, each arc plate (10) is connected to the rotating shaft (8) by a spring (11), and a gap is left between the arc plate (10) and the inner wall of the cylindrical barrel (7) in the non-rotating state of the rotating shaft (8), one end of the rotating shaft (8) is connected to the output shaft of one end of the double-shaft motor (4) through a torque meter, and the open end of the cylindrical barrel (7) is rotatably connected to one end of the intermediate sleeve (5) through an end face sealing structure, and a plurality of excavators (12) are fixed on the outer wall of the cylindrical barrel (7).

2. The automatic library block dredging device according to claim 1, characterized in that, The elevating system further includes a second elevating support (13) vertically downward, the cylindrical barrel (7) of the silt excavating device is provided with a second bearing (14) on the outside, and the silt excavating device is connected with the second elevating support (13) through the second bearing (14).

3. The automatic yard dredging device according to claim 1, characterized in that, A plurality of groups of excavators (12) are arranged on the outer wall of the cylindrical barrel (7) in an axial direction, a plurality of excavators (12) in each group are uniformly and spacedly distributed along the circumference, and an inlet of the sand suction pipe (3) is distributed in the dust raising area of each group of excavators (12).

4. The automatic yard dredging device according to claim 1, characterized in that, A silt concentration detector (15) is further arranged below the bottom of the ship body (1), the silt concentration detector (15) and the torque meter are connected to a controller, after the double-shaft motor (4) is started for a certain period of time, when the torque detected by the torque meter drops to a preset threshold value, the controller controls the double-shaft motor (4) to stop working, and when the silt concentration detector (15) detects that the regional silt concentration is less than a preset value, the controller controls the sand pump (2) to stop working and controls the elevating system to move the silt excavating device upward.

5. The automatic yard dredging device according to claim 4, characterized in that, The ship body (1) is further provided with a satellite positioning system connected to the controller, and a dredging path setting system is further arranged on the controller, after the sand pump (2) stops working, the controller controls the ship body (1) to sail to the next working area according to the preset dredging path, then controls the double-shaft motor (4) to start, and controls the elevating system to move the silt excavating device downward.

Images