Energy dissipation structure capable of controlling discharge quantity of pipeline and construction method of energy dissipation structure

Abstract

The structure comprises a drainage pipeline, an energy dissipation deep well, an overflow channel and a water supply pipe, one side of the drainage pipeline is connected with the water supply pipe, the water outlet end of the drainage pipeline is connected with a water inlet of the energy dissipation deep well, and the water outlet end of the energy dissipation deep well is connected with the overflow channel. The closing plate with the variable-caliber impedance hole pipe hole is arranged at the tail end of the drainage pipeline, the drainage capacity of the drainage pipeline is controlled, a part of water flow energy is killed, water flow enters the energy dissipation deep well, high-speed water flow is killed again, the water flow energy of the pipeline is reduced, and finally the water flow enters the overflow channel through the overflow port. And the water flow passes through the energy dissipation steps again for energy dissipation and finally stably enters the natural riverway, and energy dissipation is thoroughly conducted on high-speed water flow through first-stage control over the high-speed water flow and on-way energy dissipation.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy engineering, and in particular relates to an energy dissipation structure capable of controlling pipeline leakage and a construction method thereof. Background Art

[0002] During the construction of a reservoir project, water discharge measures need to be deployed for water supply and to lower the water level of the reservoir. Usually, a water supply pipeline is laid on the side of the reservoir to realize its water supply and discharge functions. Due to the high flow rate at the end of the pipeline, energy dissipation facilities are usually required at the end of the pipeline to dissipate the energy of the high-speed water flow.

[0003] At present, the energy dissipation at the end of the pipeline usually adopts conical valve or excavated energy dissipation pool for energy dissipation. The cost of conical valve is relatively high, especially for large-diameter conical energy dissipation valve. The energy dissipation pool needs to be excavated downward to form a deep foundation pit, which requires a large amount of civil engineering. Traditional water flow energy dissipation measures at the end of the pipeline often adopt valve or energy dissipation pool measures, and the project investment is relatively large.

[0004] Since water supply vent pipes are widely used in water conservancy projects, the traditional pipeline energy dissipation treatment measures are difficult to control the energy dissipation effect, the construction excavation and civil engineering work is large, the investment is high, and in the subsequent operation process, it is affected by scouring, erosion, corrosion, etc., and needs to be repaired regularly, which brings many inconveniences to the project operation. Therefore, a energy dissipation structure that can automatically control the energy dissipation effect according to the water flow and is simple to construct is needed.

[0005] The patent document with the announcement number CN112854151A discloses a rectifying energy dissipation drop well device. Through the integrated modular design of the drop sill, energy dissipation well, energy dissipation beam, tail sill, bend, rectifying section and energy dissipation tooth sill, the engineering workload can be significantly reduced. At the same time, through the combined action of the energy dissipation well, energy dissipation beam, bend and energy dissipation tooth sill, the mechanical energy of the water flow can be eliminated. The energy dissipation tooth sill cannot be adjusted according to the water flow, and the structure of the variable-caliber impedance hole pipe hole is not set. The initial energy dissipation effect for high-speed water flow is average.

[0006] The patent document with the announcement number CN217537251U discloses an energy dissipation well that combines bottom flow energy dissipation with diversion flow energy dissipation. The energy dissipation modes of the first concrete retaining wall, the arc diversion flow bank and the second concrete retaining wall are bottom flow energy dissipation, diversion flow energy dissipation and bottom flow energy dissipation respectively. The arc diversion flow bank arranged at the opening of the first concrete retaining wall of the energy dissipation well makes the water flow be lifted when it flows through the opening, and the water flow is then ejected obliquely upward, thereby increasing the flow path of the water flow and utilizing air resistance and friction inside the water flow to dissipate energy. Energy dissipation by energy dissipation well is generally effective for high-speed water flow. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides an energy dissipation structure capable of controlling pipeline leakage and a construction method thereof.

[0008] The present invention is achieved through the following technical solutions.

[0009] The present invention provides an energy dissipation structure capable of controlling the amount of pipeline discharge, comprising a drainage pipe, an energy dissipation deep well, an overflow channel and a water supply pipe, wherein one side of the drainage pipe is connected to the water supply pipe, the water outlet end of the drainage pipe is connected to the water inlet of the energy dissipation deep well, and the water outlet end of the energy dissipation deep well is connected to the overflow channel.

[0010] Preferably, the drainage pipe is provided with an inspection valve, a switch valve, a stanchion, an emptying and sand discharge branch pipe and a blocking plate in sequence from the water inlet end to the water outlet end. The drainage pipe runs through the stanchion, the emptying and sand discharge branch pipe is arranged on one side of the drainage pipe, the blocking plate is arranged at the water outlet end of the emptying and sand discharge branch pipe, and an ecological flow pipe is arranged on the water supply pipe.

[0011] Preferably, a pipe hole is arranged on the stuffy plate, and an energy dissipation pipe is connected to the stuffy plate, and the energy dissipation pipe is communicated with the drainage pipe through the pipe hole.

[0012] Preferably, energy dissipation tooth piers and energy dissipation grids are arranged in the energy dissipation deep well, the energy dissipation tooth piers and energy dissipation grids are respectively arranged on the wall of the energy dissipation well, a first energy dissipation layer is arranged in the bottom of the energy dissipation deep well, and anti-floating reinforcement is arranged on the outer wall of the bottom of the energy dissipation deep well.

[0013] Preferably, a pressurizing device is arranged in the energy dissipation deep well, and the pressurizing device is connected to the energy dissipation tooth pier, and the energy dissipation tooth pier is a hollow structure.

[0014] Preferably, an energy dissipation grid is arranged in the elevation direction of the energy dissipation well wall, one end of the energy dissipation grid is connected to a propulsion device, the propulsion device is connected to the energy dissipation well wall, an elastic member is arranged on the energy dissipation grid, and the elastic member is connected to the energy dissipation grid through a fixing buckle.

[0015] Preferably, the overflow channel is arranged on the energy dissipation bottom plate, and an energy dissipation step is arranged in the overflow channel.

[0016] Preferably, an anti-lift anchor pile is arranged at the bottom of the energy dissipation base plate, and a second energy dissipation layer is arranged at one end of the energy dissipation base plate, and the second energy dissipation layer is prepared by laying blocks of stone.

[0017] Preferably, the water outlet of the energy dissipation deep well is connected to the overflow channel through an overflow port, a flow meter is provided on the overflow port, and a data acquisition controller is provided on the energy dissipation deep well.

[0018] A construction method of an energy dissipation structure capable of controlling pipeline discharge flow, comprising the following steps:

[0019] S1: Set up a drainage pipe on the reservoir;

[0020] S2: Inspection valves and switch valves are installed on the drainage pipe to control the water flow switch;

[0021] S3: Install a baffle at the end of the drainage pipe and set a pipe hole to connect the energy dissipation pipe to control the flow of water;

[0022] S4: Dig under the energy dissipation pipe and pour concrete to form an energy dissipation deep well, set anti-floating reinforcement at the foundation of the energy dissipation deep well, lay the first energy dissipation layer at the bottom of the energy dissipation deep well, and set energy dissipation tooth piers, energy dissipation grids, propulsion devices and pressure devices on the wall of the energy dissipation well;

[0023] S5: Set an overflow port on the energy dissipation deep well and install a flow meter to measure the outlet flow rate;

[0024] S6: Cast the energy dissipation bottom plate, overflow channel and energy dissipation steps at the water outlet of the overflow, install anti-lift anchor piles under the energy dissipation bottom plate, and lay the second energy dissipation layer at the end of the energy dissipation bottom plate.

[0025] The beneficial effects of the present invention are:

[0026] The present invention arranges a blocking plate with a variable-diameter impedance hole at the end of the drainage pipe to control the discharge capacity of the drainage pipe and eliminate a part of the water flow energy. The water flows into the energy dissipation deep well, and the high-speed water flow is disinfected again to reduce the water flow energy in the pipe. Finally, the water enters the overflow channel through the overflow port. The water flows again through the energy dissipation step to dissipate energy, and finally smoothly enters the natural river channel. By controlling the first stage of the high-flow water flow, the energy is eliminated along the way, and the high-speed water flow is completely dissipated. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 is a cross-sectional view of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the energy dissipation well wall of the present invention;

[0030] Figure 4 It is a structural schematic diagram of the overflow channel of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the energy dissipation deep well of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the dull plate of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the energy dissipation grid of the present invention;

[0034] In the figure: 1-drainage pipe, 2-inspection valve, 3-switch valve, 4-anchor pier, 5-stifling plate, 5-1-pipe hole, 6-energy dissipation pipe, 7-energy dissipation deep well, 7-1-energy dissipation well wall, 7-2-energy dissipation tooth pier, 7-3-energy dissipation grid, 7-4-elastic member, 7-5-fixing buckle, 7-6-storage grid, 7-7-propulsion device, 7-8-first energy dissipation layer, 8-overflow, 9-overflow channel, 10-energy dissipation ladder, 11-energy dissipation bottom plate, 12-anti-lifting anchor pile, 13-second energy dissipation layer, 14-anti-floating reinforcement, 15-ground line, 16-excavation line, 17-river water surface line, 18-data acquisition controller, 19-velocity meter, 20-water supply pipe, 21-ecological flow pipe, 22-emptying and sand discharge branch pipe. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0036] Example:

[0037] like Figures 1 to 7 As shown, an energy dissipation structure capable of controlling the pipeline discharge volume comprises a drainage pipe 1, an energy dissipation deep well 7, an overflow channel 9 and a water supply pipe 20. One side of the drainage pipe 1 is connected to the water supply pipe 20, and the outlet end of the drainage pipe 1 is connected to the water inlet of the energy dissipation deep well 7. The drainage pipe 1 is a reservoir water supply and discharge pipe, and the outlet end of the energy dissipation deep well 7 is connected to the overflow channel 9.

[0038] The drainage pipe 1 is provided with a maintenance valve 2, a switch valve 3, a pier 4, an emptying and sand discharge branch pipe 22 and a blocking plate 5 in sequence from the water inlet end to the water outlet end. The drainage pipe 1 runs through the pier 4 to increase the stability of the drainage pipe 1. The emptying and sand discharge branch pipe 22 is provided on one side of the drainage pipe 1. The blocking plate 5 is provided at the water outlet end of the emptying and sand discharge branch pipe 22, and the blocking plate 5 is a steel plate.

[0039] The water supply pipe 20 is provided with an ecological flow pipe 21, which is used to discharge the downstream ecological flow during the flood discharge process to ensure that the downstream river channel does not dry up and does not stop flowing. When the ecological flow pipe 21 is opened, the emptied sand discharge branch pipe 22 is closed. The impurities such as silt inside the drainage pipe 1 can also be cleaned and discharged by opening the water supply pipe 20 and emptying the sand discharge branch pipe 22.

[0040] The blocking plate 5 is provided with a pipe hole 5 - 1 , to which an energy dissipation pipe 6 is connected. The energy dissipation pipe 6 is connected to the drainage pipe 1 through the pipe hole 5 - 1 . The diameters of the pipe hole 5 - 1 and the energy dissipation pipe 6 are both smaller than the inner diameter of the drainage pipe 1 .

[0041] The energy dissipation deep well 7 is provided with energy dissipation tooth pier 7-2 and energy dissipation grid 7-3, which are respectively arranged on the energy dissipation well wall 7-1. The first energy dissipation layer 7-8 is arranged at the bottom of the energy dissipation deep well 7, and the first energy dissipation layer 7-8 can be prepared by laying gravel. The outer wall at the bottom of the energy dissipation deep well 7 is provided with anti-floating reinforcement 14 to increase the stability of the energy dissipation deep well 7. The depth and plane size of the energy dissipation deep well 7 can be set according to the discharge capacity and flow rate of the discharge pipe 1.

[0042] A pressurizing device 7-9 is arranged in the energy dissipation deep well 7, and the pressurizing device 7-9 is connected to the energy dissipation tooth pier 7-2. The energy dissipation tooth pier 7-2 is a hollow structure, and the material of the energy dissipation tooth pier 7-2 can be rubber.

[0043] The size of the energy dissipation tooth pier 7-2 can be adjusted by pressurizing the pressure device 7-9 according to the flow velocity measured by the flow meter 19. The pressure device 7-9 can be a hydraulic pressure device, which changes the volume of the energy dissipation tooth pier 7-2 by pressing liquid into the energy dissipation tooth pier 7-2. The number of energy dissipation tooth piers 7-2 can be set according to the energy dissipation needs of the water body.

[0044] An energy dissipation grid 7-3 is arranged in the elevation direction of the energy dissipation well wall 7-1, one end of the energy dissipation grid 7-3 is connected to the propulsion device 7-7, the propulsion device 7-7 is connected to the energy dissipation well wall 7-1, an elastic member 7-4 is arranged on the energy dissipation grid 7-3, the elastic member 7-4 is connected to the energy dissipation grid 7-3 through a fixing buckle 7-5, the density of the unfolded grid of the energy dissipation grid 7-3 can be adjusted by the propulsion device 7-7, and the energy dissipation grid 7-3 is folded into a storage grid 7-6 on the side close to the propulsion device 7-7.

[0045] The size and mesh density of the energy dissipation grid 7-3 are adjusted by the propulsion device 7-7 according to the flow velocity measured by the flow meter 19.

[0046] The automatic data acquisition controller 18 automatically adjusts the grid density of the energy dissipation grid 7-3 and the size of the energy dissipation tooth pier 7-2 by controlling the propulsion device 7-7 and the pressure device 7-9.

[0047] The overflow channel 9 is arranged on the energy dissipation bottom plate 11 , and an energy dissipation step 10 formed by pouring concrete is arranged in the overflow channel 9 .

[0048] The bottom of the energy dissipation base plate 11 is provided with anti-lift anchor piles 12 for increasing the stability of the energy dissipation base plate 11 . A second energy dissipation layer 13 is provided at one end of the energy dissipation base plate 11 . The second energy dissipation layer 13 is prepared by laying large-diameter rock mass.

[0049] The water outlet of the energy dissipation deep well 7 is connected to the overflow channel 9 through the overflow port 8, a flow meter 19 is arranged on the overflow port 8, and an automatic data acquisition controller 18 is arranged above the energy dissipation well wall 7-1 of the energy dissipation deep well 7.

[0050] A construction method of an energy dissipation structure capable of controlling pipeline discharge flow, comprising the following steps:

[0051] S1: A drainage pipe 1 is installed on the reservoir, and the height of the drainage pipe 1 is higher than the water surface line 17 of the downstream river to prevent backflow;

[0052] S2: The inspection valve 2 and the switch valve 3 are installed on the drain pipe 1 to control the water flow switch;

[0053] S3: Install a blocking plate 5 at the end of the drainage pipe 1, and set a pipe hole 5-1 to connect the energy dissipation pipe 6 to control the flow of water;

[0054] S4: Dig under the energy dissipation pipe 6 and pour concrete to form an energy dissipation deep well 7. Anti-floating reinforcement 14 is set at the foundation of the energy dissipation deep well 7. The first energy dissipation layer 7-8 is laid at the bottom of the energy dissipation deep well 7. Energy dissipation tooth piers 7-2, energy dissipation grids 7-3, propulsion devices 7-7 and pressure devices 7-9 are set on the energy dissipation well wall 7-1. The height of the top of the energy dissipation deep well 7 is greater than the water surface line 17 of the downstream river channel to prevent backflow;

[0055] S5: an overflow port 8 is provided on the energy dissipation deep well 7, and a flow meter 19 is installed to measure the outlet flow rate;

[0056] S6: Set an excavation line 16 on the ground line 15 and excavate, cast an energy dissipation bottom plate 11, an overflow channel 9 and an energy dissipation ladder 10 on the side wall of the water outlet end of the overflow port 8, install anti-lift anchor piles 12 under the energy dissipation bottom plate 11, and lay a second energy dissipation layer 13 at the end of the energy dissipation bottom plate 11.

Claims

1. An energy dissipation structure capable of controlling pipeline leakage, characterized in that: The invention comprises a drainage pipe (1), an energy dissipation deep well (7), an overflow channel (9) and a water supply pipe (20); one side of the drainage pipe (1) is connected to the water supply pipe (20); the water outlet end of the drainage pipe (1) is connected to the water inlet of the energy dissipation deep well (7); and the water outlet end of the energy dissipation deep well (7) is connected to the overflow channel (9).

2. An energy dissipation structure capable of controlling pipeline leakage as claimed in claim 1, characterized in that: The drainage pipe (1) is provided with a check valve (2), a switch valve (3), a stanchion (4), an emptying and sand discharge branch pipe (22) and a blocking plate (5) in sequence from the water inlet end to the water outlet end. The drainage pipe (1) runs through the stanchion (4). The emptying and sand discharge branch pipe (22) is provided on one side of the drainage pipe (1). The blocking plate (5) is provided at the water outlet end of the emptying and sand discharge branch pipe (22). An ecological flow pipe (21) is provided on the water supply pipe (20).

3. An energy dissipation structure capable of controlling pipeline leakage as claimed in claim 2, characterized in that: The blocking plate (5) is provided with a pipe hole (5-1), the blocking plate (5) is connected with an energy dissipation pipe (6), and the energy dissipation pipe (6) is communicated with the drainage pipe (1) through the pipe hole (5-1).

4. The energy dissipation structure capable of controlling pipeline leakage as claimed in claim 1, characterized in that: An energy dissipation tooth pier (7-2) and an energy dissipation grid (7-3) are arranged in the energy dissipation deep well (7); the energy dissipation tooth pier (7-2) and the energy dissipation grid (7-3) are respectively arranged on the energy dissipation well wall (7-1); a first energy dissipation layer (7-8) is arranged in the bottom of the energy dissipation deep well (7); and anti-floating ribs (14) are arranged on the outer wall of the bottom of the energy dissipation deep well (7).

5. The energy dissipation structure capable of controlling pipeline leakage as claimed in claim 4, characterized in that: A pressurizing device (7-9) is arranged in the energy dissipation deep well (7), and the pressurizing device (7-9) is connected to the energy dissipation tooth pier (7-2), and the energy dissipation tooth pier (7-2) is a hollow structure.

6. The energy dissipation structure capable of controlling pipeline leakage as claimed in claim 4, characterized in that: An energy dissipation grid (7-3) is arranged in the elevation direction of the energy dissipation well wall (7-1), one end of the energy dissipation grid (7-3) is connected to a propulsion device (7-7), the propulsion device (7-7) is connected to the energy dissipation well wall (7-1), an elastic member (7-4) is arranged on the energy dissipation grid (7-3), and the elastic member (7-4) is connected to the energy dissipation grid (7-3) via a fixing buckle (7-5).

7. The energy dissipation structure capable of controlling pipeline leakage and the construction method thereof as claimed in claim 1, characterized in that: The overflow channel (9) is arranged on an energy dissipation bottom plate (11), and an energy dissipation step (10) is arranged in the overflow channel (9).

8. The energy dissipation structure capable of controlling pipeline leakage as claimed in claim 7, characterized in that: An anti-lift anchor pile (12) is arranged at the bottom of the energy dissipation base plate (11), and a second energy dissipation layer (13) is arranged at one end of the energy dissipation base plate (11), and the second energy dissipation layer (13) is prepared by laying blocks of stone.

9. The energy dissipation structure capable of controlling pipeline leakage as claimed in claim 1, characterized in that: The water outlet of the energy dissipation deep well (7) is connected to the overflow channel (9) through an overflow port (8), a flow meter (19) is arranged on the overflow port (8), and a data acquisition controller (18) is arranged on the energy dissipation deep well (7).

10. A construction method of an energy dissipation structure according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Install a drainage pipe on the reservoir (1); S2: A check valve (2) and a switch valve (3) are installed on the drain pipe (1) to control the water flow switch; S3: Install a blocking plate (5) at the end of the drainage pipe (1), and set a pipe hole (5-1) to connect the energy dissipation pipe (6) to control the flow rate of the water flow; S4: digging and pouring concrete below the energy dissipation pipe (6) to form an energy dissipation deep well (7), setting anti-floating reinforcement (14) at the foundation of the energy dissipation deep well (7), laying a first energy dissipation layer (7-8) at the bottom of the energy dissipation deep well (7), and setting energy dissipation tooth piers (7-2), energy dissipation grids (7-3), a propulsion device (7-7) and a pressure device (7-9) on the energy dissipation well wall (7-1); S5: an overflow port (8) is provided on the energy dissipation deep well (7), and a flow meter (19) is installed to measure the outlet flow rate; S6: pouring an energy dissipation base plate (11), an overflow channel (9) and an energy dissipation ladder (10) at the water outlet of the overflow port (8), installing anti-lift anchor piles (12) below the energy dissipation base plate (11), and laying a second energy dissipation layer (13) at the end of the energy dissipation base plate (11).

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