Reservoir tree type horizontal pipe hydraulic self-control low water level efficient sand discharge system

Abstract

The application discloses a reservoir tree type horizontal pipe hydraulic self-control low-water-level high-efficiency desilting system and relates to the technical field of reservoir desilting. The reservoir tree type horizontal pipe hydraulic self-control low-water-level high-efficiency desilting system comprises a sand-pulling component and a water pressure automatic opening and closing component, the water pressure automatic opening and closing component is arranged in the sand-pulling component, the sand-pulling component comprises high-density polyethylene pipes, the high-density polyethylene pipes are provided in multiple numbers, the multiple high-density polyethylene pipes are all provided with openings, and the openings are connected with the water pressure automatic opening and closing component. The reservoir tree type horizontal pipe hydraulic self-control low-water-level high-efficiency desilting system is used to utilize the characteristics of large flow rate and strong sand-carrying capacity of water flow under a low water head. When the water head is 50 cm, the water pressure automatic opening and closing device is automatically opened, when the water volume is gradually reduced from the tail of the reservoir to the head of the reservoir to no water, the water pressure automatic opening and closing device is closed or automatically closed when the water head is greater than 50 cm. Under the premise that manual operation is not needed, the water pressure is used to drive the cover plate and the telescopic rod to be linked, and the automatic opening and closing of the opening is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of reservoir dredging, in particular to a reservoir tree type horizontal pipe hydraulic self-control low water level efficient sand discharge system. BACKGROUND

[0002] Due to the influence of reservoir siltation, the average service life of the reservoir is affected, and the key factor determining the normal function of the reservoir is siltation. Siltation not only reduces the effective capacity of the reservoir and shortens the service life of the reservoir, but also causes a series of problems such as dam top risk, downstream river cutoff, water quality deterioration, and serious threat to water conservancy safety and regional ecological balance.

[0003] Current reservoir dredging and sand discharge mainly relies on mechanical dredging technology and hydraulic sand discharge dredging technology, but both have significant defects. Mechanical dredging not only has high cost, cannot be operated without manual operation, and has limited efficiency, and is limited by water depth and terrain. For remote and special terrain areas, equipment transportation is difficult and may damage the stability of the reservoir slope and cause ecological disturbance. Current hydraulic sand discharge dredging technology relies on large flow water sources, which is difficult to implement in arid areas or dry seasons, and has difficulty in controlling the concentration of silt, high energy consumption cost, and may also damage the original vegetation at the bottom of the reservoir. SUMMARY

[0004] The purpose of the present application is to provide a reservoir tree type horizontal pipe hydraulic self-control low water level efficient sand discharge system to solve the problems of large engineering disturbance, high cost, environmental unfriendliness and low efficiency in the current dredging and sand discharge technology.

[0005] To achieve the above purpose, the present application provides a reservoir tree type horizontal pipe hydraulic self-control low water level efficient sand discharge system, which comprises a sand discharge component and a water pressure automatic opening and closing component, the water pressure automatic opening and closing component is arranged inside the sand discharge component, the sand discharge component comprises a high-density polyethylene pipe, a plurality of high-density polyethylene pipes are arranged, an opening is arranged on each of the plurality of high-density polyethylene pipes, and the opening is connected with the water pressure automatic opening and closing component.

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

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

[0008] Preferably, the cover piece is provided as a hollow structure, the cover piece is matched with the opening, the opening diameter is smaller than the cover piece diameter, and the cover piece is made of waterproof and corrosion-resistant material.

[0009] Preferably, the end of the cover piece is provided with a sealing and water-stopping device, the backwater surface of the cover piece is connected with the telescopic rod, the lower part of the telescopic rod is connected with the air cylinder, and the air cylinder is connected with the telescopic rod fixing device.

[0010] Preferably, the high-density polyethylene pipe is provided in a tree shape, the high-density polyethylene pipe includes a main pipe and branch pipes, and the branch pipes are connected with the main pipe through elbow bends.

[0011] Preferably, the elastic claw includes a moving claw and a bottom claw, the bottom claw is connected with the moving claw, the moving claw is connected with the bottom of the metal frame, buckles are arranged on the metal frame, and the buckles are connected with the moving claw.

[0012] Therefore, the water reservoir tree-type horizontal pipe hydraulic self-control low-water high-efficiency sand discharge system has the following beneficial effects:

[0013] (1) By automatically opening and closing the opening and the hydraulic telescopic rod linkage, automatic dredging is realized by using the natural water flow power, manual frequent operation and large energy consumption are not required, the dredging efficiency and precision are greatly improved, secondary pollution is reduced, and the advantages of simple structure and low cost are used to adapt to complex terrain and different water flow conditions, and the disadvantages of traditional dredging equipment, such as being greatly restricted by the environment, high cost, and low efficiency, are effectively overcome.

[0014] (2) By using the characteristics that the water flow has a large flow rate and strong sand-carrying capacity under a low water head, the water pressure automatic opening and closing device is automatically opened when the water head is 50 cm, is closed when the water volume gradually decreases from the tail of the reservoir to the head of the reservoir to no water, or is automatically closed when the water head is greater than 50 cm, the cover piece and the telescopic rod are driven by using the water pressure force on the premise that manual operation is not required, the opening is automatically opened and closed by water power, the mud and sand is efficiently introduced into the branch, is finally collected into the trunk, and is discharged, cost is saved, efficiency is high, and the environment is friendly.

[0015] The technical solutions of the present application are further described in detail below by means of the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structural schematic diagram of a water reservoir tree-type horizontal pipe hydraulic self-control low-water high-efficiency sand discharge system of the present application;

[0017] Figure 2 FIG. 4 is a pipeline laying structure schematic diagram of the present application;

[0018] Figure 3 FIG. 5 is a pipeline installation plan view of the present application;

[0019] Figure 4 Structure diagram of telescopic rod of the present application;

[0020] Figure 5 Low and high water head cover opening and closing diagram of the present application;

[0021] Figure 6 Principle diagram of closing cover when tail of reservoir is without water of the present application;

[0022] Figure 7 Structure diagram of elastic claw of the present application;

[0023] Reference signs

[0024] 1, high-density polyethylene pipe; 2, opening; 3, metal frame; 4, support shaft; 5, telescopic rod; 6, telescopic rod fixing device; 7, pipe clamp; 8, cover; 9, sealing water stop device; 10, elbow; 11, air cylinder; 12, moving claw; 13, bottom claw; 14, buckle. DETAILED DESCRIPTION

[0025] The technical solutions of the present application are further described below through the drawings and examples.

[0026] Unless otherwise defined, technical terms or scientific terms used in the present application shall be understood as the common meaning understood by a person with ordinary skills in the art to which the present application belongs. The terms "first", "second" and similar words used in the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar words mean that the elements or objects before the words cover the elements or objects listed after the words and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "up", "down", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] EMBODIMENT

[0028] Please refer to Figures 1-7 The present application provides a reservoir tree type horizontal pipe hydraulic self-control low water level efficient sand discharge system, which comprises a sand drawing component and a water pressure automatic opening and closing component. The water pressure automatic opening and closing component is arranged in the interior of the sand drawing component. The sand drawing component comprises a plurality of high-density polyethylene pipes 1. Each of the plurality of high-density polyethylene pipes 1 is provided with an opening 2, and the opening 2 is connected with the water pressure automatic opening and closing component.

[0029] The lower half of the high-density polyethylene pipe 1 is buried in the riverbed for drawing silt, and the upper half has an opening 2. It is completely resistant to acid and alkali and chlorine ion corrosion, does not require additional corrosion protection treatment, and has a service life of more than 50 years; it is smooth and does not scale, can reduce silt adhesion, and has a friction coefficient of only 0.009, which is 60% lower than that of a concrete pipe, thereby reducing the risk of pipe blockage; the hot-melt butt joint / electric melting connection technology is mature and ensures reliable sealing. The high-density polyethylene pipe 1 is arranged in a tree-like manner on the riverbed, and when silt enters through the water pressure automatic opening and closing component, the silt is transported, the high-density polyethylene pipe 1 includes a main pipe and a branch pipe, the branch pipe and the main pipe are connected through an elbow pipe bend 10, so that they can be connected at a certain angle, and a tree-like silt drawing system is formed. As shown in Figure 2 the middle high-density polyethylene pipe 1 is the main trunk, the diameter is determined according to the reservoir capacity, and it plays a role in collecting and transporting silt, the rest is a branch, the diameter is relatively small, and it can transport silt to the main trunk, and finally draw silt out of the silt outlet, which is convenient for collection. Since the reservoir bottom is at a certain angle with the water level, the pipeline is laid horizontally on the reservoir bottom, so that each elevation has a water pressure automatic opening and closing component, which can be opened in turn at different water heads to ensure the efficiency of silt drawing.

[0030] The water pressure automatic opening and closing component includes a metal frame 3, a support shaft 4, and an extension rod 5, the lower part of the extension rod 5 is connected through an extension rod fixing device 6, the extension rod fixing device 6 is provided with two, which are respectively installed on the left lower and right lower sides inside the high-density polyethylene pipe 1, and are used for fixing the two extension rods 5, the outside of the high-density polyethylene pipe 1 is connected with the metal frame 3 through a pipe clamp 7, the metal frame 3 is connected with the pipe clamp 7 to strengthen and fix the high-density polyethylene pipe 1, so that it can be firmly laid on the riverbed.

[0031] The metal frame 3 is provided in a U-shaped structure, the metal frame 3 is made of corrosion-resistant metal, and the shape is similar to a rectangle except that the lower edge is removed, that is, there are upper and left and right three edges, the left and right two edges are first inserted through the pipe clamp 7 and then inserted into the riverbed, so as to strengthen and fix the high-density polyethylene pipe 1. The lower part of the left and right two edges of the metal frame 3 is made into an elastic "claw" shape, which is contracted when inserted into the riverbed, so as to increase the pressure and embed the riverbed deeper; when the frame has a tendency to go up, the elastic "claw" structure can be opened, which prevents the frame from being pulled out of the riverbed, so that the pipeline is fixed more firmly. The elastic claw includes a moving claw 12 and a bottom claw 13, the bottom claw 13 is connected with the moving claw 12, the moving claw 12 is connected with the bottom of the metal frame 3, the metal frame 3 is provided with a buckle 14, the buckle 14 is connected with the moving claw 12, and the extension structure is like an umbrella frame. When the elastic claw is just inserted into the soil, the buckle 14 is at the uppermost end, the elastic claw is tightened, and it is convenient to insert into the soil; after the elastic claw is inserted into the soil, the buckle 14 is at the lowermost end, the elastic claw is opened, and it is hindered from separating from the soil layer. The upper part of the metal frame 3 is connected with the support shaft 4, and the end part of the support shaft 4 is connected with a cover plate 8 through a small bearing.

[0032] Cover 8 is made of a waterproof and corrosion-resistant material. Its shape is similar to opening 2 in the upper portion of high-density polyethylene tube 1, with a semi-elliptical cross-section. Cover 8 is hollow and slightly larger than opening 2. A sealing device 9 is installed around cover 8 to prevent water from entering the pipe when cover 8 is closed under high water pressure. Sealing device 9 is made of a water-resistant, wear-resistant, and elastic rubber material. One end of cover 8 is connected to support shaft 4, allowing it to rotate around support shaft 4 to open and close.

[0033] The back surface of the cover 8 is connected to the telescopic rod 5, and the lower part of the telescopic rod 5 is connected to the cylinder 11. When it slides up and down, it can compress the gas in the cylinder 11, so that the gas provides an upward thrust to the telescopic rod 5. The telescopic rod 5 has a certain degree of flexibility, so that it can bend slightly when the cover 8 is lifted. The lower part of the cylinder is connected to the telescopic rod fixing device 6.

[0034] When the water head is high, the pressure of the water on the cover 8 is greater than the support force of the telescopic rod 5 on the cover 8, and the cover 8 is in the closed state. When the water head is low, the pressure of the water on the cover 8 is less than the support force of the telescopic rod 5 on the cover 8, and the cover 8 is open. At this time, a large amount of sediment contained in the water enters the sand pulling component through the opening of the cover 8. When the water level at the end of the reservoir drops to zero, the cover 8 at the end of the reservoir is closed due to the airflow, preventing debris from entering.

[0035] like Figures 5-6 As shown, the hydraulic automatic opening and closing component automatically opens when the water head reaches 50 cm and remains open until there is no water. It gradually closes as the water level decreases from the end of the reservoir to the beginning until there is no water, and automatically closes again when the water head exceeds 50 cm. This process is achieved by providing an aircraft wing-shaped cover 8. When the water head is high (greater than 50 cm), the flap 8 is subjected to downward water pressure, its own weight, and the upward support force of the telescopic rod 5. Due to the high water pressure, the combined downward force is greater than the combined upward force, causing the flap 8 to close. When the water head is low (0 < water head < 50 cm), the water flow has a strong sediment-carrying capacity. The flap 8 is subjected to downward water pressure, its own weight, the upward buoyancy due to its hollowness, and the upward support force of the telescopic rod 5. Due to the low water pressure, the combined downward force is less than the combined upward force, causing the flap 8 to open, allowing a large amount of sediment to enter the pipeline. When the reservoir tail is dry, the flap 8 is subjected to its own weight and the upward support force of the telescopic rod 5. At this time, due to the special shape of the flap 8, the air flow rate at the lower edge is greater than the upper edge, resulting in lower pressure at the lower edge. Consequently, the atmosphere exerts downward pressure on the flap 8, causing it to close. When the reservoir is filled again to a water head of 50 cm, the flap 8 opens. When the water head exceeds 50 cm, the flap 8 closes.

[0036] Therefore, the application adopts the above-mentioned low-water high-efficiency desilting system of the reservoir tree-type horizontal pipe hydraulic automatic control, realizes automatic dredging by automatic opening and closing of the opening and linkage of the hydraulic telescopic rod, and utilizes the natural water flow power, without frequent manual operation and large energy consumption, which not only greatly improves the dredging efficiency and precision, reduces secondary pollution, but also overcomes the defects of the traditional dredging equipment, such as large environmental restriction, high cost and low efficiency, by virtue of the advantages of simple structure and low cost, and is suitable for complex terrain and different water flow conditions.

[0037] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit them, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solutions of the present application can still be modified or replaced by equivalents, 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 application.

Claims

1. The reservoir tree-type horizontal pipe hydraulic automatic control low water level high efficiency sediment discharge system is characterized by: The sand pulling device comprises a sand pulling component and a water pressure automatic opening and closing component, wherein the water pressure automatic opening and closing component is arranged inside the sand pulling component, and the sand pulling component comprises a high-density polyethylene tube, wherein the high-density polyethylene tubes are provided in plurality, and each of the plurality of high-density polyethylene tubes is provided with an opening, and the opening is connected to the water pressure automatic opening and closing component; The hydraulic 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. The two telescopic rod fixing devices are respectively fixed inside the high-density polyethylene tube. The upper portion of the metal frame is connected to the support shaft, and the end of the support shaft is connected to the cover plate through a small bearing; The cover is configured as a hollow structure, the cover is adapted to the opening, the opening has a diameter smaller than the diameter of the cover, and the cover is made of a waterproof and corrosion-resistant material; A sealing water-stopping device is provided at the end of the cover plate, the back-of-water surface of the cover plate is connected to the telescopic rod, the lower part of the telescopic rod is connected to the cylinder, and the cylinder is connected to the telescopic rod fixing device; When the water head is high, the pressure of water on the cover is greater than the supporting force of the telescopic rod on the cover, and the cover is in a closed state; when the water head is low, the pressure of water on the cover is less than the supporting force of the telescopic rod on the cover, and the cover is opened. At this time, a large amount of mud and sand contained in the water enters the sand pulling component through the opening after the cover is opened.

2. The reservoir tree-shaped horizontal pipe hydraulic automatic control low water level high efficiency sediment removal system according to claim 1 is characterized by: The exterior of the high-density polyethylene pipe is connected to the metal frame via a pipe clamp.

3. The reservoir tree-shaped horizontal pipe hydraulic automatic control low water level high efficiency sediment removal system according to claim 2 is characterized by: The metal frame is configured as a U-shaped structure, and elastic claws are provided at the lower portion of the metal frame.

4. The reservoir tree-shaped horizontal pipe hydraulic automatic control low water level high efficiency sediment removal system according to claim 3 is characterized by: The high-density polyethylene pipes are arranged in a tree shape and include a main pipe and a branch pipe. The branch pipes are connected to the main pipe through a bend elbow.

5. The reservoir tree-shaped horizontal pipe hydraulic automatic control low water level high efficiency sediment removal system according to claim 4 is characterized by: The elastic claw includes a moving claw and a bottom claw, the bottom claw is connected to the moving claw, the bottom claw is connected to the bottom of the metal frame, and a buckle is provided on the metal frame, and the buckle is connected to the moving claw.

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