Reservoir tree-shaped horizontal pipe hydraulic self-control low-water-level efficient desilting system

Abstract

The invention discloses a reservoir tree-shaped horizontal pipe hydraulic self-control low-water-level efficient desilting system, and relates to the technical field of reservoir desilting, the reservoir tree-shaped horizontal pipe hydraulic self-control low-water-level efficient desilting system comprises a sand pulling component and a hydraulic automatic opening and closing component, the hydraulic automatic opening and closing component is arranged in the sand pulling component, and the sand pulling component comprises a plurality of high-density polyethylene pipes; open holes are formed in the multiple high-density polyethylene pipes and connected with the water pressure automatic opening and closing component. By the adoption of the reservoir tree-shaped horizontal pipe hydraulic self-control low-water-level efficient desilting system, the characteristics that water flow is large in flow speed and high in desilting capacity under the low water head condition are utilized, the water pressure automatic opening and closing device is automatically opened when the water head is 50 cm, and the water pressure automatic opening and closing device is closed when the water amount is gradually reduced from the reservoir tail to the reservoir head till no water exists or is automatically closed when the water head is larger than 50 cm; on the premise that manual operation is not needed, the cover piece is driven to be linked with the telescopic rod through water pressure, and full-automatic hydraulic opening and closing of the opening are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of reservoir silt cleaning, and particularly to a reservoir tree-shaped horizontal pipe hydraulic self-control low water level high-efficiency sediment discharge system. Background Art

[0002] Due to the influence of reservoir sedimentation, the average service life of the reservoir is affected. The key factor determining the normal service life of the reservoir for its function is sediment deposition. Sediment deposition will not only reduce the effective storage capacity, shorten the reservoir life, and lead to a decline in the reservoir's regulation capacity, but also trigger a series of problems such as the risk of sediment overtopping in front of the dam, downstream river channel drying up, and water quality deterioration due to the extension and elevation of the backwater, seriously threatening the safety of water conservancy projects and the regional ecological balance.

[0003] Currently, reservoir silt cleaning and sand pulling mainly rely on mechanical silt cleaning technology and hydraulic sediment discharge silt cleaning technology, but both have significant defects. Mechanical silt cleaning not only has high costs, is inseparable from manual operation, has limited efficiency, and is restricted by water depth and terrain. For remote and special terrain areas, equipment transportation is difficult and it is easy to damage the stability of the reservoir slope and cause ecological disturbances; the current hydraulic sediment discharge silt cleaning technology relies on a large flow of water source, which is difficult to implement in arid areas or during dry seasons, and it is difficult to control the sediment concentration, has high energy consumption costs, and may also damage the original vegetation at the bottom of the reservoir. Summary of the Invention

[0004] The purpose of the present invention is to provide a reservoir tree-shaped horizontal pipe hydraulic self-control low water level high-efficiency sediment discharge system to solve the problems of large engineering disturbance, high cost, environmental unfriendliness and low efficiency in the existing silt cleaning and sand pulling technologies.

[0005] To achieve the above purpose, the present invention provides a reservoir tree-shaped horizontal pipe hydraulic self-control low water level high-efficiency sediment discharge system, including a sand pulling component and a water pressure automatic opening and closing component. The water pressure automatic opening and closing component is arranged inside the sand pulling component. The sand pulling component includes high-density polyethylene pipes. There are multiple high-density polyethylene pipes, and openings are arranged on each of the multiple high-density polyethylene pipes. The openings are connected to the water pressure automatic opening and closing component.

[0006] Preferably, the water pressure automatic opening and closing component includes a metal frame, a support shaft and a telescopic rod. The lower part of the telescopic rod is connected to a telescopic rod fixing device. There are two telescopic rod fixing devices, and the two telescopic rod fixing devices are respectively fixed inside the high-density polyethylene pipe. The outside of the high-density polyethylene pipe is connected to the metal frame through a pipe hoop.

[0007] Preferably, the metal frame is arranged in a U-shaped structure. An elastic claw is arranged at the lower part of the metal frame. The upper part of the metal frame is connected to the support shaft. The end of the support shaft is connected to a cover plate through a small bearing.

[0008] Preferably, the cover plate is arranged in a hollow structure, the cover plate is adapted to the opening, the diameter of the opening is smaller than the diameter of the cover plate, and the cover plate is made of a waterproof and corrosion-resistant material.

[0009] Preferably, a sealing and water-stopping device is arranged at the end of the cover plate. The back water surface of the cover plate is connected to the telescopic rod, the lower part of the telescopic rod is connected to the air cylinder, and the air cylinder is connected to the telescopic rod fixing device.

[0010] Preferably, the high-density polyethylene pipes are arranged in a tree shape. The high-density polyethylene pipes include a main pipe and branch pipes, and the branch pipes are connected to the main pipe through elbow bends.

[0011] Preferably, the elastic claw includes a moving claw and a bottom claw. The bottom claw is connected to the moving claw. The moving claw is connected to the bottom of the metal frame, and a buckle is arranged on the metal frame and is connected to the moving claw.

[0012] Therefore, by adopting the above-mentioned reservoir tree-shaped horizontal pipe hydraulic self-control low water level and high-efficiency sediment discharge system, the present invention has the following beneficial effects: (1) Through the linkage of the automatic opening and closing opening and the hydraulic telescopic rod, the natural water flow power is utilized to realize automatic silt cleaning, without frequent manual operation and large energy consumption. It not only greatly improves the silt cleaning efficiency and accuracy, reduces secondary pollution, but also can, by virtue of the advantages of simple structure and low cost, adapt to complex terrains and different water flow conditions, effectively overcoming the disadvantages of traditional silt cleaning equipment being greatly restricted by the environment, high cost and low efficiency.

[0013] (2) Utilizing the characteristics that the water flow has a large velocity and strong sediment-carrying capacity under low water head conditions, when the water head is 50 cm, the water pressure automatic opening and closing device automatically opens. When the water volume gradually decreases from the tail of the reservoir to the head of the reservoir until there is no water, it closes, or when the water head is greater than 50 cm, it automatically closes. Without the need for manual operation, it can utilize the water pressure to drive the linkage of the cover plate and the telescopic rod to realize the full-automatic hydraulic opening and closing of the opening, efficiently introduce the sediment into the branch channels, and finally collect and discharge it through the main channel. At the same time, it saves costs, has high efficiency and is environmentally friendly.

[0014] The technical solution of the present invention will be further described in detail below through the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the reservoir tree-shaped horizontal pipe hydraulic self-control low water level and high-efficiency sediment discharge system of the present invention; Figure 2 It is a schematic structural diagram of the pipeline laying of the present invention; Figure 3 It is a top view of the pipeline installation of the present invention; Figure 4 It is a schematic structural diagram of the telescopic rod of the present invention; Figure 5 This is the opening and closing diagram of the low and high head cover plates of the present invention; Figure 6 This is the schematic diagram of the cover plate closing when there is no water at the end of the reservoir of the present invention; Figure 7 This is the schematic diagram of the elastic claw structure of the present invention; Reference numerals 1. High-density polyethylene pipe; 2. Opening; 3. Metal frame; 4. Support shaft; 5. Telescopic rod; 6. Telescopic rod fixing device; 7. Pipe hoop; 8. Cover plate; 9. Sealing and water stop device; 10. Elbow; 11. Cylinder; 12. Moving claw; 13. Bottom claw; 14. Buckle. Detailed implementation manners

[0016] The technical solutions of the present invention will be further described below with reference to the drawings and embodiments.

[0017] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meanings understood by those of ordinary skill in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object to be described changes, the relative positional relationship may also change accordingly.

[0018] Embodiment Please refer to Figures 1 - 7 , the present invention provides a reservoir tree-shaped horizontal pipe hydraulic self-control low water level high-efficiency sediment discharge system, including a sand pulling component and a water pressure automatic opening and closing component. The water pressure automatic opening and closing component is arranged inside the sand pulling component. The sand pulling component includes a plurality of high-density polyethylene pipes 1, and a plurality of openings 2 are arranged on the high-density polyethylene pipes 1. The openings 2 are connected to the water pressure automatic opening and closing component.

[0019] The lower half of the high-density polyethylene pipe 1 is buried in the riverbed for pulling sand, and the upper half has an opening 2. It is completely resistant to acid and alkali, and chloride ion corrosion, does not require additional anti-corrosion treatment, and has a service life of more than 50 years; the surface is smooth and scale-free, which can reduce the adhesion of sediment, and the friction coefficient is only 0.009, which is 60% lower than that of concrete pipes, reducing the risk of pipeline blockage; the hot-melt butt / electric fusion connection technology is mature, ensuring reliable sealing. The high-density polyethylene pipe 1 is arranged in a tree-like manner on the riverbed. When sediment enters through the water pressure automatic opening and closing components, it is transported. The high-density polyethylene pipe 1 includes a main pipe and a branch pipe. The branch pipe is connected to the main pipe through a bend elbow 10, so that it can be connected at a certain angle to form a tree-like sand pulling system. Figure 2 As shown, the central high-density polyethylene pipe 1 is the main channel, with a diameter determined by the reservoir's capacity, and serves to aggregate and transport sediment. The remaining branches, with relatively smaller diameters, transport sediment to the main channel and ultimately pull it out of the sediment outlet for easy collection. Because the reservoir bottom is at a certain angle to the horizontal, the entire pipeline is laid flat at the bottom of the reservoir, allowing hydraulically activated opening and closing components at each elevation to open sequentially at different water heads to ensure efficient sediment extraction.

[0020] The water pressure automatic opening and closing components include a metal frame 3, a support shaft 4 and a telescopic rod 5. The lower part of the telescopic rod 5 is connected by a telescopic rod fixing device 6. Two telescopic rod fixing devices 6 are provided, which are respectively installed on the lower left and lower right sides inside the high-density polyethylene pipe 1 to fix the two telescopic rods 5. The outside of the high-density polyethylene pipe 1 is connected to the metal frame 3 through a pipe clamp 7. The metal frame 3 is connected to the pipe clamp 7 to strengthen the fixation of the high-density polyethylene pipe 1 so that it can be firmly laid on the riverbed.

[0021] The metal frame 3 is constructed in a U-shaped configuration. Made of corrosion-resistant metal, it resembles a rectangle minus the bottom edge, consisting of three sides: an upper, a lower, and a lower. These sides are first threaded through pipe clamps 7 before being inserted beneath the riverbed to reinforce the HDPE pipe 1. The lower portions of the left and right sides of the metal frame 3 are designed as elastic "claws." When inserted into the riverbed, these claws contract, increasing pressure and embedding them deeper. When the frame moves upward, the elastic claws expand, preventing it from pulling out of the riverbed and further securing the pipe. The elastic claw includes a movable claw 12 and a bottom claw 13. The bottom claw 13 is connected to the movable claw 12, which is connected to the bottom of the metal frame 3. The metal frame 3 is provided with a buckle 14, which is connected to the movable claw 12. Its telescopic structure is like the frame of an umbrella. When the elastic claw is just inserted into the soil, the buckle 14 is at the uppermost end, tightening the elastic claw and facilitating its insertion. After the elastic claw is inserted into the soil, the buckle 14 is at the lowermost end, and the elastic claw opens, preventing it from being separated from the soil. The upper part of the metal frame 3 is connected to the support shaft 4, and the end of the support shaft 4 is connected to the cover plate 8 via a small bearing.

[0022] The cover plate 8 is made of waterproof and corrosion-resistant material, and its shape is similar to the opening 2 on the upper part of the high-density polyethylene pipe 1. The cross-section is "semi-elliptical". The cover plate 8 is integrally made into a hollow shape, and the size of the cover plate 8 is slightly larger than the opening 2. A sealing and water-stopping device 9 is assembled around the cover plate 8, which can ensure that water cannot enter the pipeline when the cover plate 8 is closed under high water pressure. The sealing and water-stopping device 9 is made of a rubber material that is water-resistant, wear-resistant and has good elasticity. One end of the cover plate 8 is connected to the support shaft 4 and can rotate around the support shaft 4 to achieve opening and closing.

[0023] The back water surface of the cover plate 8 is connected to the telescopic rod 5, and the lower part of the telescopic rod 5 is connected to the air cylinder 11. When it slides up and down, it can compress the gas in the air cylinder 11, and thus the gas will provide an upward thrust to the telescopic rod 5. The telescopic rod 5 has a certain flexibility, so that it can bend slightly when lifting the cover plate 8. The lower part of the air cylinder is connected to the telescopic rod fixing device 6.

[0024] When the water head is high, the pressure of water on the cover plate 8 is greater than the supporting force of the telescopic rod 5 on the cover plate 8, and the cover plate 8 is in the closed state; when the water head is low, the pressure of water on the cover plate 8 is less than the supporting force of the telescopic rod 5 on the cover plate 8, and the cover plate 8 opens. At this time, a large amount of sediment contained in the water enters the sand-dragging component through the opening after the cover plate 8 is opened. When the water level at the tail of the reservoir drops to zero, the cover plate 8 at the tail part of the reservoir closes due to the action of air flow to prevent sundries from entering.

[0025] As Figures 5 - 6 shown, the water pressure automatic opening and closing component automatically opens when the water head is 50 cm, and remains in the open state until there is no water and then closes; when the water volume gradually decreases from the tail to the head of the reservoir until there is no water, it closes step by step, and also automatically closes when it is greater than 50 cm. This process is achieved by setting the cover plate 8 in the shape of an airplane wing. When the water head is high (greater than 50 cm), the cover plate 8 is subject to the downward water pressure, its own downward gravity, and the upward supporting force of the telescopic rod 5. At this time, due to the large water pressure, the downward resultant force is greater than the upward resultant force, and the cover plate 8 closes; when the water head is low (0 < water head < 50), the water flow has a strong sand-carrying capacity. The cover plate 8 is subject to the downward water pressure, its own downward gravity, the upward buoyancy due to its hollow shape, and the upward supporting force of the telescopic rod 5. At this time, due to the small water pressure, the downward resultant force is less than the upward resultant force, and the cover plate 8 opens, and a large amount of sediment enters the pipeline; when there is no water at the tail of the reservoir, the cover plate 8 is subject to its own downward gravity and the upward supporting force of the telescopic rod 5. At this moment, due to the special shape of the cover plate 8, the air flow speed at the lower edge is greater than that at the upper edge, and the pressure at the lower edge is lower. Furthermore, the atmosphere will form a downward pressure on the cover plate 8, causing the cover plate 8 to close. When the reservoir is refilled to a water head of 50 cm, the cover plate 8 opens. When the water head is greater than 50 cm, the cover plate 8 closes.

[0026] Therefore, the present invention adopts the above-mentioned reservoir tree-shaped horizontal pipe hydraulic self-control low water level high-efficiency sediment removal system. Through the linkage of the automatic opening and closing opening and the hydraulic telescopic rod, it uses the power of natural water flow to achieve automatic silt cleaning, without frequent manual operation and a large amount of energy consumption. It not only greatly improves the silt cleaning efficiency and accuracy, reduces secondary pollution, but also can, by virtue of the advantages of simple structure and low cost, adapt to complex terrains and different water flow conditions, and effectively overcome the disadvantages of traditional silt cleaning equipment, such as being greatly restricted by the environment, high cost, and low efficiency.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present invention, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. The hydraulic self-control low water level high-efficiency sediment drainage system of the reservoir tree-shaped lying pipe is characterized in that: It includes a sand-hauling component and a water-pressure automatic opening and closing component. The water-pressure automatic opening and closing component is arranged inside the sand-hauling component. The sand-hauling component includes a plurality of high-density polyethylene pipes. A plurality of openings are provided on the high-density polyethylene pipes, and the openings are connected to the water-pressure automatic opening and closing component.

2. The hydraulic self-control low water level high-efficiency sediment drainage system of the reservoir tree-shaped horizontal pipe according to claim 1, characterized in that: The water-pressure automatic opening and closing component includes a metal frame, a support shaft and a telescopic rod. The lower part of the telescopic rod is connected to a telescopic rod fixing device. Two telescopic rod fixing devices are provided, and the two telescopic rod fixing devices are respectively fixed inside the high-density polyethylene pipe. The outside of the high-density polyethylene pipe is connected to the metal frame through a pipe hoop.

3. The hydraulic self-control low water level and high efficiency sediment flushing system of the reservoir tree-shaped horizontal pipe according to claim 2, wherein: The metal frame is arranged in a U-shaped structure. Elastic claws are provided at the lower part of the metal frame. The upper part of the metal frame is connected to the support shaft, and the end of the support shaft is connected to a cover plate through a small bearing.

4. The low water level efficient sediment flushing system with hydraulic automatic control for the reservoir tree-shaped horizontal pipe according to claim 3, characterized in that: The cover plate is arranged in a hollow structure. The cover plate is adapted to the opening. The diameter of the opening is smaller than the diameter of the cover plate. The cover plate is made of a waterproof and corrosion-resistant material.

5. The hydraulic self-control low water level high efficiency sediment drainage system of the reservoir tree-shaped horizontal pipe according to claim 4, characterized in that: A sealing and water-stopping device is provided at the end of the cover plate. The back water surface of the cover plate is connected to the telescopic rod. The lower part of the telescopic rod is connected to a cylinder, and the cylinder is connected to the telescopic rod fixing device.

6. The hydraulic self-control low water level and high efficiency sediment flushing system of the reservoir tree-shaped horizontal pipe according to claim 5, characterized in that: The high-density polyethylene pipes are arranged in a tree shape. The high-density polyethylene pipes include a main pipe and branch pipes. The branch pipes are connected to the main pipe through elbow bends.

7. The hydraulic self-control low water level high efficiency sediment drainage system of the reservoir tree-shaped horizontal pipe according to claim 6, characterized in that: The elastic claw includes a moving claw and a bottom claw. The bottom claw is connected to the moving claw. The moving claw is connected to the bottom of the metal frame. A buckle is provided on the metal frame, and the buckle is connected to the moving claw.

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