Side groove spillway sand blocking and rectifying chute device suitable for high-silt-content water flow

Abstract

The utility model discloses a side groove spillway sand blocking and rectifying chute device suitable for high-silt-content water flow, which comprises a sand blocking and rectifying chute device consisting of a spillway upstream bottom plate, an overflow weir, a drainage tank contraction section and a side groove spillway, a side groove component consisting of a side groove bottom plate and a side groove opposite side plate, and a plurality of rectifying chute components, the rectification chute assemblies are arranged above the side chute spillway at equal intervals, each rectification chute assembly comprises a first water baffle and a second water baffle, and the first water baffle and the second water baffle are fixedly connected to the two ends of a rectification chute upstream plate correspondingly; by means of the rectification chute assembly and the sand blocking and collecting chute assembly, high-sand-content water flow forms beneficial spiral flow when flowing through the rectification chute assembly, scouring of harmful spiral flow to the side chute side wall is counteracted, meanwhile, the sand blocking and collecting chute assembly intercepts sand in the water flow and guides the sand to a sand conveying path through a sand collecting chute bottom plate, structure abrasion is effectively reduced, and the sand blocking efficiency is improved; and the overflow capacity is prevented from being influenced by sediment deposition.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy projects, in particular to a sand intercepting and rectifying chute device of a side channel spillway suitable for high-sediment-content water flow. Background Art

[0002] The side channel spillway is suitable for scenarios where the terrain is steep and it is difficult to arrange the main channel spillway, and can significantly reduce the amount of earth and stone excavation.

[0003] However, the water flowing over the weir is likely to form a spiral flow in the existing side channel, which will increase the wear rate of the concrete side wall. In some rivers in Northwest my country and North China, the sediment content is very high. The annual sediment transport of the seven major rivers is as high as 2.3 billion tons. The high-sediment-content water flow will aggravate the negative impact of the spiral flow during the operation of the side channel spillway, accelerate the wear and damage of the structure, reduce the strength of the structure, and affect the service life of the discharge structure. In addition, under the condition of high-sediment-content water flow, sediment will accumulate at the bottom of the side channel spillway, seriously affecting the flow capacity of the discharge structure. In the event of a flood, the spillway may overflow, threatening the safety of the dam body. If it is manually cleaned regularly, it will consume a lot of manpower and material resources.

[0004] To this end, the utility model provides a side channel spillway sand interception and rectification chute device suitable for high-sediment-laden water flow to solve the above problems. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a side channel spillway sand retention and rectification chute device suitable for high-sand water flow, which solves the above-mentioned problem that the water flow passing through the weir easily forms a spiral flow in the existing side channel, which will aggravate the accelerated wear of the concrete side wall.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a side channel spillway sand interception and rectification chute device suitable for high-sediment-laden water flow, including a sand interception and rectification chute device consisting of a spillway upstream bottom plate, an overflow weir, a drain chute contraction section and a side channel spillway, and a side channel assembly consisting of a side channel bottom plate and a side channel opposite bank side plate, and further comprising:

[0007] A plurality of rectifying chute assemblies are equidistantly arranged above the side channel spillway, the rectifying chute assembly includes a first water baffle and a second water baffle, and the first water baffle and the second water baffle are respectively fixedly connected to the two ends of the rectifying chute water inlet plate to form a trough structure, and the bottom of the rectifying chute water inlet plate is fixedly connected to a sand transport chute bottom plate whose height gradually decreases from the rectifying chute water inlet plate to the side plate on the opposite bank of the side channel; so that after the water flows through the overflow weir, it enters the interior of the side channel spillway, and is dammed up near the water level to form a part of the dead water area. The dammed water body can be used to offset the impact of the incoming flow, thereby offsetting the negative impact of the harmful spiral flow. Part of the water flow in the space of the side channel spillway flows through the second water baffle to form a beneficial spiral flow in the rectifying chute assembly, so that the sediment is carried into the sand collecting box by the action of the spiral flow.

[0008] Preferably: a control component is provided at the end of the bottom plate of the sand conveying chute, and the control component includes a first photoelectric sensor, a first motor, a second motor and a control center, and the output shafts of the first motor and the second motor are respectively fixedly connected with a first rotating shaft and a second rotating shaft, and the first rotating shaft and the second rotating shaft are respectively fixedly connected with a first flat plate gate and a second flat plate gate.

[0009] Preferably: the bottom of the side trough assembly is fixedly connected to a sand storage and transport assembly, and a hole is opened in the bottom area of ​​the side plate on the opposite bank of the side trough to facilitate the outflow of mud and sand, the sand storage and transport assembly includes a sand collecting box and a sand transport pipe, and the first rotating shaft is fixedly connected to the connection between the side plate on the opposite bank of the side trough and the sand collecting box, and is driven to rotate by a first motor, the first flat gate is fixedly connected to the first rotating shaft, a second photoelectric sensor is fixedly connected to the side wall of the sand collecting box, the sand transport pipe is fixedly connected to the sand collecting box, the second rotating shaft is fixedly connected to the connection between the sand transport pipe and the sand collecting box, and the second rotating shaft is driven by a second motor.

[0010] Preferably, the control center, the first photoelectric sensor, the first motor and the second motor are electrically connected, and the first photoelectric sensor is used to receive a signal from the second photoelectric sensor to control the start and stop of the first motor and the second motor to control the opening and closing of the second photoelectric sensor and the first flat gate.

[0011] Preferably: multiple sand-trapping and sand-collecting trough assemblies are respectively fixedly connected to one side of the rectifying chute assembly, including a sand-collecting trough bottom plate and a sand-collecting trough water-facing plate and a sand-collecting trough backwater plate fixed on both sides of the sand-collecting trough bottom plate, and the sand-collecting trough water-facing plate, the sand-collecting trough backwater plate and the sand-collecting trough bottom plate form a sand-collecting trough, the upper part of the sand-collecting trough backwater plate is fixedly connected to a sand-trapping net, a connecting plate is fixedly connected to one side of the sand-collecting trough, and connecting holes are provided on the opposite sides of the connecting plate.

[0012] Preferably, the sand collecting trough bottom plate is located at the bottom of the sand collecting trough, and the height of the sand collecting trough bottom plate gradually decreases along the connecting plate to the surface of the communicating hole.

[0013] The utility model provides a chute device for intercepting and rectifying sediment in a side channel spillway suitable for high-sediment-laden water flow. Compared with the existing technology, it has the following advantages:

[0014] (1) The side channel spillway sediment interception and rectification chute device is suitable for high-sediment-content water flow. Through the rectification chute assembly and the sediment interception and collection chute assembly, the high-sediment-content water flow forms a beneficial spiral flow when passing through the rectification chute assembly, which offsets the scouring of the side channel side wall by the harmful spiral flow. At the same time, the sediment interception and collection chute assembly intercepts the sediment in the water flow and guides it to the sediment transport path through the bottom plate of the sediment collection chute, effectively reducing the wear of the structure, improving the sediment interception efficiency, and preventing sediment accumulation from affecting the flow capacity.

[0015] (2) The side channel spillway sediment interception and rectification chute device, which is suitable for high-sediment-content water flow, uses a control component and a sand storage and conveying component. When the sediment in the sand collection box reaches the detection position of the second photoelectric sensor, the signal is triggered by the control center to trigger the motor to drive the first flat gate to close and the second flat gate to open, thereby realizing automatic sediment discharge. After the sediment is discharged, the gate resets and continues to collect sand, without the need for manual cleaning, thereby ensuring continuous and stable flow of the side channel spillway and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the sand-trapping and rectifying chute device arranged in the side channel spillway of the utility model;

[0017] Figure 2 Schematic diagram of the harmful spiral flow formed in the side trough by the water flow passing through the weir of this utility model

[0018] Figure 3 The layout orientation of the sand intercepting and rectifying chute device of the utility model in the side chute;

[0019] Figure 4 This is a schematic diagram of the main structure of the sand-trapping and rectifying chute device of the present invention;

[0020] Figure 5 This is a schematic structural diagram of the main part of the sand-trapping and rectifying chute device of the present invention;

[0021] Figure 6 This is a cross-sectional view of the main body of the sand-trapping and rectifying chute device of the present invention;

[0022] Figure 7 Schematic diagram of beneficial spiral flow in the rectifying chute of the present invention;

[0023] Figure 8 This is a schematic diagram of the beneficial spiral flow generation principle of the present utility model;

[0024] Figure 9 This is a schematic diagram of the structure of the rectifying chute and the sand storage and conveying components of the utility model;

[0025] Figure 10 For this utility model Figure 9 Enlarged view of point A in the middle.

[0026] In the picture:

[0027] 1. Sediment interception and rectification chute device; 101. Upstream bottom plate of spillway; 102. Overflow weir; 103. Contraction section of spillway;

[0028] 2. Side trough assembly; 201. Side trough bottom plate; 202. Side trough opposite bank side plate;

[0029] 4. Rectifying chute assembly; 401. First water baffle; 402. Second water baffle; 403. Rectifying chute water-facing plate; 404. Sand transport chute bottom plate;

[0030] 5. Sand collecting trough assembly; 501. Sand collecting trough front plate; 502. Sand collecting trough; 503. Connecting hole; 504. Sand collecting trough back plate; 505. Connecting plate; 506. Sand collecting net; 507. Sand collecting trough bottom plate;

[0031] 6. Water surface; 601. Upstream water surface; 602. Harmful spiral flow; 603. Beneficial spiral flow;

[0032] 7. Control assembly; 701. First photoelectric sensor; 702. Second photoelectric sensor; 703. First flat gate; 704. Second flat gate; 705. First rotating shaft; 706. Second rotating shaft; 707. First motor; 708. Second motor; 709. Control center;

[0033] 8. Sand storage and transport components; 801. Sand collecting box; 802. Sand transport pipeline. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figures 1 to 10 A side channel spillway sediment retention and rectification chute device suitable for high-sediment-laden water flow, comprising a sediment retention and rectification chute device 1 consisting of a spillway upstream bottom plate 101, an overflow weir 102, a sluiceway contraction section 103, and a side channel spillway 104, and a side channel assembly 2 consisting of a side channel bottom plate 201 and a side channel opposite bank side plate 202, and further comprising:

[0036] Multiple rectifying chute assemblies 4 are equidistantly arranged above the side channel spillway 104. The rectifying chute assembly 4 includes a first water baffle 401 and a second water baffle 402. The first water baffle 401 and the second water baffle 402 are respectively fixedly connected to the two ends of the rectifying chute water baffle 403 to form a trough structure. The bottom of the rectifying chute water baffle 403 is fixedly connected to a sand transport chute bottom plate 404 whose height gradually decreases from the rectifying chute water baffle 403 to the side plate 202 on the opposite bank of the side channel. After the water flows through the overflow weir 102, it enters the side channel spillway 104, where it is backed up near the water level, forming a dead water area. The backed-up water body can be used to offset the impact of the incoming flow, thereby offsetting the negative impact of the harmful spiral flow 602. Part of the water that enters the space of the side channel spillway 104 flows through the second water retaining plate 402, forming a beneficial spiral flow 603 in the rectifying chute assembly 4, so that the silt is carried into the sand collecting box 801 by the action of the spiral flow.

[0037] During operation, high-sediment-content water flows through the upstream bottom plate 101 of the spillway to the overflow weir 102, and then enters the side channel spillway 104 after crossing the overflow weir 102. The water level in the area near the side plate 202 on the opposite bank of the side channel is blocked by the rectifying chute assembly 4, resulting in a high water level and forming a dead water area. The high water level can buffer the impact of the incoming flow and offset the scouring effect of the harmful spiral flow 602 on the side channel side wall. Part of the water flows into the trough structure of the rectifying chute assembly 4 (surrounded by the first water baffle 401, the second water baffle 402 and the rectifying chute water plate 403). Because the bottom plate 404 of the sand transport chute is inclined along the rectifying chute water plate 403 to the side plate 202 on the opposite bank of the side channel (height Gradually decreases), the water flow forms a beneficial clockwise spiral flow 603 in the trough, which uses centrifugal force to gather the sediment in the water to the bottom of the trough body, and transports it along the inclined sand conveying chute bottom plate 404 toward the side plate 202 on the opposite bank of the side trough, preparing for subsequent sediment collection. At the same time, part of the sediment in the water flow is intercepted by the sand intercepting and collecting trough assembly 5 on one side of the rectifying chute assembly 4. After the water flow hits the sand collecting trough water-facing plate 501, part of the sediment is blocked by the sand intercepting net 506 and falls into the sand collecting trough 502. Because the sand collecting trough bottom plate 507 is inclined along the connecting plate 505 to the connecting hole 503, the sediment flows into the sand conveying chute bottom plate 404 through the connecting hole 503 and merges into the main sand conveying flow.

[0038] Example 2: Please refer to Figures 1 to 10This embodiment provides a technical solution based on the first embodiment: a control component 7 is provided at the end of the sand conveying chute bottom plate 404, the control component 7 includes a first photoelectric sensor 701, a first motor 707, a second motor 708 and a control center 709, and the output shafts of the first motor 707 and the second motor 708 are respectively fixedly connected to the first rotating shaft 705 and the second rotating shaft 706, and the first rotating shaft 705 and the second rotating shaft 706 are respectively fixedly connected to the first flat gate 703 and the second flat gate 704, and the bottom of the side chute assembly 2 is fixedly connected to the sand storage The sand transport component 8 has a hole in the bottom area of ​​the side plate 202 on the opposite bank of the side trough to facilitate the outflow of sediment. The sand storage and transport component 8 includes a sand collecting box 801 and a sand transport pipe 802. The first rotating shaft 705 is fixedly connected to the connection between the side plate 202 on the opposite bank of the side trough and the sand collecting box 801, and is driven to rotate by the first motor 707. The first flat gate 703 is fixedly connected to the first rotating shaft 705. The side wall of the sand collecting box 801 is fixedly connected to the second photoelectric sensor 702. The sand transport pipe 802 is fixedly connected to the sand collecting box 801. The second rotating shaft 706 is fixedly connected to the sand transport pipe 80 2 and the sand collecting box 801, the second rotating shaft 706 is driven by the second motor 708, the control center 709, the first photoelectric sensor 701, the first motor 707 and the second motor 708 are electrically connected, and the first photoelectric sensor 701 is used to receive the signal of the second photoelectric sensor 702, control the start and stop of the first motor 707 and the second motor 708, so as to control the opening and closing of the second photoelectric sensor 702 and the first flat gate 703, and multiple sand intercepting and collecting trough components 5 are respectively fixedly connected to one side of the rectifying chute component 4, including the sand collecting trough bottom plate 507 and The sand collecting trough water-incoming plate 501 and the sand collecting trough water-backing plate 504 are fixed on both sides of the sand collecting trough bottom plate 507, and the sand collecting trough water-incoming plate 501, the sand collecting trough water-backing plate 504 and the sand collecting trough bottom plate 507 form a sand collecting trough 502. The upper part of the sand collecting trough water-backing plate 504 is fixedly connected to the sand intercepting net 506. A connecting plate 505 is fixedly connected to one side of the sand collecting trough 502, and a connecting hole 503 is provided on the opposite side of the connecting plate 505. The sand collecting trough bottom plate 507 is located at the bottom of the sand collecting trough 502, and the height of the sand collecting trough bottom plate 507 gradually decreases along the connecting plate 505 to the surface of the connecting hole 503.

[0039] During operation, the sediment entering the bottom plate 404 of the sand conveying chute moves to the end along with the beneficial spiral flow 603, and enters the sand collecting box 801 of the sand storage and conveying assembly 8 through the opening at the bottom of the side plate 202 on the opposite bank of the side trough. When the sediment in the sand collecting box 801 accumulates to the detection position of the second photoelectric sensor 702, the second photoelectric sensor 702 sends a signal to the first photoelectric sensor 701, and the first photoelectric sensor 701 transmits the signal to the control center 709. The control center 709 triggers the first motor 707 to start, drive the first rotating shaft 705 to rotate, and close the first flat gate 703 (blocking the passage between the side trough and the sand collecting box 801). At this time, the second motor 708 is started to drive the second rotating shaft 706 to rotate, so that the second flat gate 704 is opened (connecting the sand collecting box 801 and the sand conveying pipe 802), and the sediment is discharged along the sand conveying pipe 802. When the sediment in the sand collecting box 801 is drained and the second photoelectric sensor 702 detects that there is no sediment, it sends a signal to the control center 709 again. The control center 709 reversely drives the first motor 707 and the second motor 708 to open the first flat gate 703 and close the second flat gate 704, and restore the sediment collection state. This process realizes automatic sediment collection and discharge, avoids manual cleaning, and ensures the stability of the flow capacity of the side channel spillway.

[0040] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0041] Working principle: When working, first, high-sediment-content water flows through the upstream bottom plate 101 of the spillway to the overflow weir 102, and then enters the side channel spillway 104. The water level near the side plate 202 on the opposite bank of the side channel is blocked by the rectifying chute component 4, resulting in a high water level and forming a dead water area, which offsets the scouring of the harmful spiral flow 602. Part of the water flows into the rectifying chute component 4 (surrounded by the first water baffle 401, the second water baffle 402, and the rectifying chute water plate 403), and forms a beneficial spiral flow 603 along the inclined sand transport chute bottom plate 404, transporting the sediment to the sand collecting box 801; in the sand intercepting and collecting trough component 5, the water flow impacts the sand collecting trough water plate 501, and the sediment is blocked by the sand intercepting net 506 and falls into the sand collecting trough 502, along the sand collecting trough bottom plate 507 through the connecting hole 503 into the sand conveying chute bottom plate 404, the sediment enters the sand collecting box 801 through the bottom opening of the side plate 202 on the opposite bank of the side trough, after the second photoelectric sensor 702 detects the sediment, the signal is transmitted to the control center 709 through the first photoelectric sensor 701, the first motor 707 drives the first rotating shaft 705 to close the first flat gate 703, the second motor 708 drives the second rotating shaft 706 to open the second flat gate 704, and the sediment is discharged through the sand conveying pipe 802; after the sediment is discharged, the second photoelectric sensor 702 sends a signal, the control center 709 opens the first flat gate 703 and closes the second flat gate 704 to resume sand collection.

[0042] It should be noted that the standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A side channel spillway sediment retention and rectification chute device suitable for high-sediment-laden water flow, comprising a sediment retention and rectification chute device (1) consisting of a spillway upstream bottom plate (101), an overflow weir (102), a sluiceway contraction section (103), and a side channel spillway (104), and a side channel assembly (2) consisting of a side channel bottom plate (201) and a side channel opposite bank side plate (202), characterized in that: Also includes, A plurality of rectifying chute assemblies (4) are equidistantly arranged above a side channel spillway (104), wherein the rectifying chute assemblies (4) comprise a first water baffle (401) and a second water baffle (402), and the first water baffle (401) and the second water baffle (402) are respectively fixedly connected to two ends of a rectifying chute water inlet plate (403) to form a trough structure, and the bottom of the rectifying chute water inlet plate (403) is fixedly connected to a sand transport chute bottom plate (404) whose height gradually decreases from the rectifying chute water inlet plate (403) to the side plate (202) on the opposite bank of the side channel.

2. The side channel spillway sediment interception and rectification chute device suitable for high sediment load water flow according to claim 1, characterized in that: A control assembly (7) is provided at the end of the sand conveying chute bottom plate (404), and the control assembly (7) includes a first photoelectric sensor (701), a first motor (707), a second motor (708) and a control center (709), and the output shafts of the first motor (707) and the second motor (708) are respectively fixedly connected to a first rotating shaft (705) and a second rotating shaft (706), and the first rotating shaft (705) and the second rotating shaft (706) are respectively fixedly connected to a first flat plate gate (703) and a second flat plate gate (704).

3. The side channel spillway sediment interception and rectification chute device suitable for high sediment load water flow according to claim 2, characterized in that: The bottom of the side trough assembly (2) is fixedly connected to a sand storage and transport assembly (8), and a hole is opened in the bottom area of ​​the side plate (202) on the opposite bank of the side trough to facilitate the outflow of sediment. The sand storage and transport assembly (8) includes a sand collecting box (801) and a sand transport pipeline (802), and the first rotating shaft (705) is fixedly connected to the connection between the side plate (202) on the opposite bank of the side trough and the sand collecting box (801), and is driven to rotate by a first motor (707). The first flat gate (703) is fixedly connected to the first rotating shaft (705). A second photoelectric sensor (702) is fixedly connected to the side wall of the sand collecting box (801), the sand transport pipeline (802) is fixedly connected to the sand collecting box (801), and the second rotating shaft (706) is fixedly connected to the connection between the sand transport pipeline (802) and the sand collecting box (801). The second rotating shaft (706) is driven by a second motor (708).

4. The side channel spillway sediment interception and rectification chute device suitable for high sediment load water flow according to claim 3, characterized in that: The control center (709), the first photoelectric sensor (701), the first motor (707) and the second motor (708) are electrically connected, and the first photoelectric sensor (701) is used to receive a signal from the second photoelectric sensor (702) to control the start and stop of the first motor (707) and the second motor (708), thereby controlling the opening and closing of the second photoelectric sensor (702) and the first flat gate (703).

5. The sediment interception and rectification chute device for a side channel spillway suitable for high sediment content water flow according to claim 1, characterized in that: A plurality of sand intercepting and collecting trough assemblies (5) are respectively fixedly connected to one side of the rectifying chute assembly (4), and comprise a sand collecting trough bottom plate (507) and a sand collecting trough water-incoming plate (501) and a sand collecting trough backwater plate (504) fixed to both sides of the sand collecting trough bottom plate (507). The sand collecting trough water-incoming plate (501), the sand collecting trough backwater plate (504) and the sand collecting trough bottom plate (507) form a sand collecting trough (502). A sand intercepting net (506) is fixedly connected to the upper portion of the sand collecting trough backwater plate (504). A connecting plate (505) is fixedly connected to one side of the sand collecting trough (502), and a communicating hole (503) is provided on the opposite side of the connecting plate (505).

6. The sediment interception and rectification chute device for a side channel spillway suitable for high sediment load water flow according to claim 5, characterized in that: The sand collecting trough bottom plate (507) is located at the bottom of the sand collecting trough (502), and the height of the sand collecting trough bottom plate (507) gradually decreases along the connecting plate (505) to the surface of the communicating hole (503).

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