An irrigation and water conservancy structure for farmland

Abstract

The present invention discloses a farmland water conservancy structure, which includes an inlet bottom plate, an outlet bottom plate, a first inclined retaining wall and a second inclined retaining wall. The front end of the inlet bottom plate is set as an inlet; there are two outlet bottom plates, and the two outlet bottom plates are respectively arranged on the left and right sides of the inlet bottom plate; the height of the inlet bottom plate is greater than the height of the outlet bottom plate, forming a drop structure; both the first inclined retaining wall and the second inclined retaining wall are arranged on the inlet bottom plate; the first inclined retaining wall, the second inclined retaining wall and the inlet bottom plate form a triangular confluence area with the apex angle facing the rear side, and a sand washing port is arranged at the rear part of the triangular confluence area, and the sand washing port is connected to a sand washing pipeline; the first inclined retaining wall and the second inclined retaining wall form a water quantity measurement structure, and the triangular confluence area, the sand washing port and the sand washing pipeline form a sand washing structure; it simultaneously has the functions of sand washing and silt cleaning, drop energy dissipation to adjust the channel flow velocity and water quantity measurement in the channel, realizes the multi-functional integration of the farmland water conservancy structure, thereby simplifies the structure and reduces the input cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of farmland water conservancy, and particularly relates to a farmland water conservancy structure. Background Art

[0002] Most of the existing farmland water conservancy structures only have one of the functions of sand flushing and silt cleaning, hydraulic jump energy dissipation for adjusting the channel flow velocity, and water force measurement on the side of the channel water, resulting in the defect of single function.

[0003] For example, the commonly used hydraulic jump structure in the existing farmland water conservancy technology often only has the function of forming a hydraulic jump to adjust the channel drop, so it can only play the role of adjusting the flow velocity. In addition, the existing sand flushing and silt cleaning structures are usually relatively complex, but only have the function of sand flushing and silt cleaning. In addition, when water force measurement is to be carried out in the existing technology for the channel, it is generally only achieved by setting a water force measurement structure similar to a Marshall flume with a single function. Summary of the Invention

[0004] The purpose of the present invention is to provide a farmland water conservancy structure, which solves the problem of single function of the farmland water conservancy structure in the existing technology, enables it to simultaneously have the functions of sand flushing and silt cleaning, hydraulic jump energy dissipation for adjusting the channel flow velocity and water force measurement in the channel, so as to realize the multi-functional integration of the farmland water conservancy structure, and further simplifies the structure and reduces the input cost.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The present invention provides a farmland water conservancy structure, including an inlet bottom plate, an outlet bottom plate, a first inclined retaining wall and a second inclined retaining wall. The front end of the inlet bottom plate is set as an inlet; there are two outlet bottom plates, and the two outlet bottom plates are respectively arranged on the left and right sides of the inlet bottom plate; the height of the inlet bottom plate is greater than the height of the outlet bottom plate to form a hydraulic jump structure; the first inclined retaining wall and the second inclined retaining wall are both arranged on the inlet bottom plate; the first inclined retaining wall, the second inclined retaining wall and the inlet bottom plate form a triangular confluence area with the apex facing the rear side, a sand flushing port is arranged at the rear part of the triangular confluence area, and the sand flushing port is connected to a sand flushing pipeline; the first inclined retaining wall and the second inclined retaining wall form a water force measurement structure, and the triangular confluence area, the sand flushing port and the sand flushing pipeline form a sand flushing structure.

[0007] For the farmland water conservancy structure of the present invention, there is a height difference between the inlet bottom plate and the outlet bottom plate, forming a drop structure. The first inclined retaining wall, the second inclined retaining wall and the inlet bottom plate form a triangular confluence area. Within this area, due to the blockage of the first inclined retaining wall and the second inclined retaining wall, the water flow velocity decreases sharply and the carrying capacity drops linearly, thereby forming sediment deposition on the inlet bottom plate; the water with less sediment content after deposition overflows through the tops of the first inclined retaining wall and the second inclined retaining wall into the rear channel; the sediment deposited between the first inclined retaining wall and the second inclined retaining wall enters the sand washing pipeline through the sand washing opening and is discharged. The first inclined retaining wall and the second inclined retaining wall form a water force measurement structure, and the channel flow is calculated by observing the streamline state above the first inclined retaining wall and the second inclined retaining wall and the water level rise at the top of the first inclined retaining wall and the second inclined retaining wall.

[0008] Preferably, the rear parts of the first inclined retaining wall and the second inclined retaining wall are respectively connected to the left and right sides of the middle structure, and the sand washing opening is arranged on the middle structure.

[0009] Preferably, the sand washing opening is arranged at the bottom of the middle structure and a gate is provided; a pedestrian bridge is arranged at the top of the middle structure, the pedestrian bridge is arranged above the gate, and the gate is set as a vertical lift gate.

[0010] Preferably, a pipeline interface is arranged at the rear of the inlet bottom plate, the sand washing pipeline is connected at the position of the pipeline interface, and the sand washing pipeline is arranged at the bottom of the inlet bottom plate.

[0011] Preferably, the sand washing opening is arranged in front of the pipeline interface; the left and right sides of the middle structure are respectively connected to the left and right ends of a U-shaped enclosure wall to form an enclosure structure, and the pipeline interface is arranged within the enclosure structure.

[0012] Preferably, the enclosure wall is set as a U-shaped wall with a right-angle bend, and the enclosure structure is set as a rectangle; the height of the enclosure wall is the same as that of the first inclined retaining wall and the second inclined retaining wall.

[0013] Preferably, the front ends of the first inclined retaining wall and the second inclined retaining wall are respectively connected to the left and right sides at the front end of the inlet bottom plate.

[0014] Preferably, side walls are respectively connected to the left and right sides of the inlet bottom plate, and the front ends of the first inclined retaining wall and the second inclined retaining wall are respectively connected to the front ends of the two side walls.

[0015] Preferably, the side wall is set as a U-shaped right-angle bend structure with the pipeline interface directions facing away from each other; the inlet bottom plate is set as an I-shaped structure with the web along the front-rear direction.

[0016] Preferably, the height of the side wall is greater than the heights of the first inclined retaining wall and the second inclined retaining wall.

[0017] The farmland water conservancy structure provided by the present invention has the following beneficial effects:

[0018] The farmland water conservancy structure provided by the present invention can solve the problem of the single function of the farmland water conservancy structure in the prior art, enabling it to simultaneously have the functions of sand flushing and silt cleaning, hydraulic jump energy dissipation to adjust the channel flow velocity and water volume measurement in the channel, thereby realizing the multi-functional integration of the farmland water conservancy structure, and further simplifying the structure and reducing the input cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural effect diagram of the farmland water conservancy structure from the first perspective provided by an embodiment of the present invention.

[0020] Figure 2 It is a structural effect diagram of the farmland water conservancy structure from the second perspective provided by an embodiment of the present invention.

[0021] Figure 3 It is a structural effect diagram of the farmland water conservancy structure from the third perspective provided by an embodiment of the present invention.

[0022] Figure 4 It is a top view of the farmland water conservancy structure provided by an embodiment of the present invention.

[0023] Figure 5 is Figure 4 Sectional view A - A in

[0024] Figure 6 is Figure 4 Sectional view B - B in

[0025] Figure 7 is Figure 4 Sectional view C - C in

[0026] Figure 8 is Figure 4 Sectional view D - D in

[0027] Reference numerals in the drawings:

[0028] 1. Inlet bottom plate, 2. Outlet bottom plate, 3. First inclined retaining wall, 4. Second inclined retaining wall, 5. Gate, 501. Sand flushing opening, 6. Side wall, 7. Middle structure, 8. Pedestrian bridge, 9. Sand flushing pipeline, 101. Pipeline interface, 102. Enclosure wall. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The present invention will be further described in detail below with reference to the drawings and specific embodiments. Embodiment

[0030] Please refer to Figures 1 to 8 , this embodiment provides a farmland water conservancy structure, including an inlet bottom plate 1, an outlet bottom plate 2, a first inclined retaining wall 3 and a second inclined retaining wall 4. The front end of the inlet bottom plate 1 is set as the inlet; there are two outlet bottom plates 2, and the two outlet bottom plates 2 are respectively arranged on the left and right sides of the inlet bottom plate 1; the height of the inlet bottom plate 1 is greater than the height of the outlet bottom plate 2, forming a drop structure; both the first inclined retaining wall 3 and the second inclined retaining wall 4 are arranged on the inlet bottom plate 1; the first inclined retaining wall 3, the second inclined retaining wall 4 and the inlet bottom plate 1 form a triangular confluence area with the apex facing the rear side, and a sand washing port 501 is arranged at the rear part of the triangular confluence area, and the sand washing port 501 is connected to a sand washing pipeline 9; the first inclined retaining wall 3 and the second inclined retaining wall 4 form a water force measurement structure, and the triangular confluence area, the sand washing port 501 and the sand washing pipeline 9 form a sand washing structure.

[0031] In the farmland water conservancy structure of this embodiment, the inlet bottom plate 1 and the outlet bottom plate 2 can form a height difference during concrete pouring. The elevation of the inlet bottom plate 1 is greater than that of the outlet bottom plate 2, so the drop structure utilizes the height difference between the inlet bottom plate 1 and the outlet bottom plate 2 to form a water drop. After the water flow entering the structure from the inlet forms a water drop through the drop structure, the channel slope is reduced, thereby playing a role in dissipating the kinetic energy of the water flow and regulating the flow velocity.

[0032] The sand washing structure utilizes the first inclined retaining wall 3, the second inclined retaining wall 4 and the inlet bottom plate 1 to form a triangular confluence area. In this area, due to the blockage of the first inclined retaining wall 3 and the second inclined retaining wall 4, the water flow velocity decreases sharply and the carrying capacity drops linearly, and then sediment deposition forms on the inlet bottom plate 1; the water with less sediment content after deposition overflows through the tops of the first inclined retaining wall 3 and the second inclined retaining wall 4 into the rear channel; the sediment deposited between the first inclined retaining wall 3 and the second inclined retaining wall 4 enters the sand washing pipeline 9 through the sand washing port 501 and is discharged.

[0033] The water force measurement structure is used to calculate the channel flow rate by observing the streamline state above the first inclined retaining wall 3 and the second inclined retaining wall 4 and the water level rise at the top of the first inclined retaining wall 3 and the second inclined retaining wall 4.

[0034] Among them, Figures 1 to 3 in, the green arrow represents the water flow direction, and the red arrow represents the sediment flow direction. Figures 1 to 4 The lower part represents the front, and the upper part represents the rear.

[0035] Please refer to Figures 1 to 7 , in some embodiments, the rear parts of the first inclined retaining wall 3 and the second inclined retaining wall 4 are respectively connected to the left and right sides of the middle structure 7, and the sand washing port 501 is opened on the middle structure 7.

[0036] Among them, the middle structure 7 is arranged at the rear side of the inlet bottom plate 1. The parts of the outlet bottom plates 2 on both sides at the rear side of the middle structure 7 can be connected as a whole. The rear end of the outlet bottom plate 2 is set as the outlet for water to flow out.

[0037] Please refer to Figure 1 , Figures 3 to 8 Specifically, the sand flushing port 501 is opened at the bottom of the middle structure 7, and a gate 5 is arranged; a pedestrian bridge 8 is arranged at the top of the middle structure 7, the pedestrian bridge 8 is arranged above the gate 5, and the gate 5 is set as a vertical lift gate.

[0038] Among them, maintenance personnel can open and close the vertical lift gate 5 through the pedestrian bridge 8 arranged at the top of the middle structure 7. When the deposited sediment reaches the set amount, the gate 5 is opened so that the sediment is discharged through the sand flushing pipeline 9.

[0039] Please refer to Figure 2 and Figure 5 Specifically, a pipeline interface 101 is opened at the rear part of the inlet bottom plate 1, the sand flushing pipeline 9 is connected at the position of the pipeline interface 101, and the sand flushing pipeline 9 is arranged at the bottom of the inlet bottom plate 1.

[0040] Among them, the sand flushing pipeline 9 can be arranged under the inlet bottom plate 1.

[0041] Specifically, the sand flushing port 501 is arranged in front of the pipeline interface 101; the left and right sides of the middle structure 7 are respectively connected to the left and right ends of the U-shaped retaining wall 102 to form a retaining structure, and the pipeline interface 101 is arranged inside the retaining structure.

[0042] As Figure 2 shown, specifically, the retaining wall 102 is set as a U-shaped wall with a right-angle bend, and the retaining structure is set as a rectangle; the height of the retaining wall 102 is the same as the heights of the first inclined retaining wall 3 and the second inclined retaining wall 4.

[0043] Please refer to Figures 1 to 8 , in some embodiments, the front ends of the first inclined retaining wall 3 and the second inclined retaining wall 4 are respectively connected to the left and right sides of the front end of the inlet bottom plate 1.

[0044] Specifically, side walls 6 are respectively connected to the left and right sides of the inlet bottom plate 1, and the front ends of the first inclined retaining wall 3 and the second inclined retaining wall 4 are respectively connected to the front ends of the two side walls 6.

[0045] Please refer to Figures 1 to 4 , specifically, the side wall 6 is set as a U-shaped right-angle bending structure with opposite opening directions; the inlet bottom plate 1 is set as an I-shaped structure with the web along the front and rear directions.

[0046] Please refer to Figures 1 to 3 , Figure 5 and Figure 7, specifically, the height of the side wall 6 is greater than the heights of the first inclined retaining wall 3 and the second inclined retaining wall 4.

[0047] Please refer to Figures 1 to 8 , wherein the inlet bottom plate 1 is set as a transverse plate in an isosceles triangle shape. The two outlet bottom plates 2 are set as transverse plates in right triangle shapes. The height of the inlet bottom plate 1 is greater than the heights of the two outlet bottom plates 2. The two inclined side edges of the inlet bottom plate 1 are respectively connected to the hypotenuses of the two outlet bottom plates 2, such that the top view projection of the connection structure of the inlet bottom plate 1 and the two outlet bottom plates 2 is a rectangle, and the vertical cross-section is a convex shape. The first inclined retaining wall 3 and the second inclined retaining wall 4 are set as vertical rectangular walls and are respectively connected to the connection positions of the inlet bottom plate 1 and the outlet bottom plate 2. The gate 5 is set as a rectangle. The sand washing port 501 is set as a rectangle. The middle structure 7 is set as a vertical rectangular structure. The pedestrian bridge 8 is set as a transverse rectangular structure. The retaining wall 102 is set as a vertical wall, and its cross-section is set as a U shape with a right-angle bend. The side wall 6 is set as a vertical wall, and its cross-section is set as a U shape with a right-angle bend.

[0048] The above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

[0049] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0050] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to has a specific orientation, is constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0051] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

Claims

1. A farmland water conservancy structure, characterized in that: include: An inlet bottom plate, the front end of which is arranged as an inlet; There are two outlet bottom plates, which are respectively arranged on the left and right sides of the inlet bottom plate; The height of the inlet bottom plate is greater than the height of the outlet bottom plate, forming a water drop structure; The first oblique baffle wall and the second oblique baffle wall are both arranged on the inlet bottom plate; the first oblique baffle wall, the second oblique baffle wall and the inlet bottom plate form a triangular confluence area with the vertex facing the rear side, and a sand flushing port is arranged at the rear of the triangular confluence area, and the sand flushing port is connected to a sand flushing pipeline; The first inclined retaining wall and the second inclined retaining wall form a hydraulic force measurement structure, and the triangular confluence area, the sand flushing port and the sand flushing pipeline form a sand flushing structure; The rear parts of the first inclined retaining wall and the second inclined retaining wall are connected to the left and right sides of the middle structure respectively, and the sand flushing port is opened at the bottom of the middle structure and is provided with a gate; A pipeline interface is provided at the rear of the inlet bottom plate, the sand flushing pipeline is connected to the pipeline interface, and the sand flushing pipeline is arranged below the inlet bottom plate; The sand flushing port is arranged in front of the pipeline interface; the left and right sides of the middle structure are respectively connected to the left and right ends of the U-shaped enclosure wall to form an enclosure structure, and the pipeline interface is arranged in the enclosure structure; The front ends of the first inclined retaining wall and the second inclined retaining wall are respectively connected to the left and right sides of the front end of the inlet bottom plate; The left and right sides of the inlet bottom plate are respectively connected with side walls, and the front ends of the first inclined retaining wall and the second inclined retaining wall are respectively connected with the front ends of the two side walls; The height of the side wall is greater than the height of the first inclined retaining wall and the second inclined retaining wall.

2. The farmland water conservancy structure according to claim 1, characterized in that: The enclosure wall is configured as a U-shaped wall bent at a right angle, and the enclosure structure is configured as a rectangle; the height of the enclosure wall is the same as the heights of the first inclined enclosure wall and the second inclined enclosure wall.

3. The farmland water conservancy structure according to claim 1, characterized in that: The side walls are configured as U-shaped right-angle bent structures with opening directions facing away from each other; the inlet bottom plate is configured as an I-shaped structure with the web along the front-to-back direction.

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