Overflow weir
By designing an overflow weir containing a diversion column and a cone, the problem of erosion and erosion of the downstream river channel after the water flow overflow is solved, multiple energy dissipation of the water flow is achieved, and the river ecology and water quality are protected.
Patent Information
- Application Number
- CN202421404832.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-06-19
AI Technical Summary
After the water overflows through the upper end of the overflow weir, high-energy water flow will cause erosion, erosion and interference to the downstream river channels, resulting in river morphology changes, riverbed erosion, vegetation damage and water quality deterioration.
An overflow weir was designed, including a trapezoidal weir, a diversion column, an energy dissipation column, a connecting component, a limit plate, a spring and a number of cones. The overflowing water flow is dissipated through the diversion column and cone to reduce the adverse effects of the water flow on the downstream river channel.
Effectively dissipate energy from overflowing water flows multiple times, reduce the erosion and erosion of the water flow on the downstream river channels, and protect the ecology and water quality of the river channels.
Smart Images
Figure CN222782026U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water conservancy, in particular to an overflow weir. Background Art
[0002] An overflow weir is an important structure in a water conservancy project. Its main function is to allow excess water to overflow when the water level reaches a certain height, so as to maintain the stability and safety of the water body. An overflow weir is usually located at the outlet of a dam, water tower or other water storage facility.
[0003] After the water overflows from the upper end of the overflow weir, especially the overflow weir with a higher height, the water flow velocity on the back water side of the overflow weir is greater than the water flow velocity on the front water side of the overflow weir. The high-speed water flow has a large kinetic energy. This high-energy water flow will cause scouring, erosion and interference to the downstream riverbed, riverbank and ecosystem, which may lead to changes in river channel morphology, erosion of the riverbed, destruction of vegetation and short-term deterioration of water quality. Summary of the invention
[0004] The utility model aims to solve the problem that after water overflows from the upper end of the overflow weir, the high-energy water flow will cause damage to the downstream river channel. An overflow weir is provided, which can dissipate the energy of the water overflowing from the overflow weir and reduce the adverse effects on the downstream river channel.
[0005] In order to solve the above problems, the technical solution of the utility model is:
[0006] An overflow weir comprises a weir body, wherein the longitudinal section of the weir body is a trapezoid, and the left and right side surfaces are inclined surfaces; the energy dissipation component 1 and the energy dissipation component 2 are also included, wherein the energy dissipation component 1 comprises a guide column and a connecting assembly, wherein the guide column is a right-angled triangular prism arranged on the right part of the top surface of the weir body, the top surface and the right side surface of the guide column are both straight surfaces, and the left side surface is an inclined surface facing the top surface of the weir body, and the energy dissipation columns are evenly distributed on the left side surface of the guide column, and a plurality of connecting assemblies are arranged on the guide column at intervals, wherein the connecting assembly comprises a sleeve and a connecting rod, wherein the open end of the sleeve is connected to the top surface of the guide column, one end of the connecting rod is fixedly connected to the top surface of the weir body, and the other end of the connecting rod penetrates the guide column and extends into the sleeve, and is connected to a limiting plate, and a spring is connected between the limiting plate and the closed end of the sleeve; and a plurality of energy dissipation cones are fixed on the right side surface of the weir body.
[0007] Furthermore, the left side surface of the guide column is an arc-shaped surface protruding toward the upper right, the front and rear ends of the left side of the guide column are arc-shaped edges, and the guide column is provided with a through hole for the connecting rod to pass through; when the spring on each of the connecting components is in a natural state, the lower end of the guide column contacts the right end of the top surface of the dam body.
[0008] Furthermore, when the limiting plate contacts the guide column, the guide column moves upward to an extreme state, and the circle where the left side surface of the guide column is located intersects with the right side surface of the weir body.
[0009] Furthermore, the energy dissipation cone includes cone one and cone two, both of which are regular tetrahedral pyramids of the same shape and size. A plurality of rows of cone one are fixed from top to bottom on the right side surface of the weir body, and a plurality of cone ones arranged at intervals along the length direction of the weir body form a row. A row of cone two is arranged between two adjacent rows of cone one, and the upper part of each cone two extends into the middle of the upper row of cone one and between the lower parts of two adjacent cones, and the lower part of each cone two extends into the middle of the lower row of cone one and between the upper parts of two adjacent cones.
[0010] Furthermore, the bottom surface of cone one is fixedly connected to the right side surface of the weir body, one diagonal line of the bottom surface of cone one is perpendicular to the front side edge of the right side surface of the weir body, and another diagonal line of the bottom surface is perpendicular to the upper side edge of the right side surface of the weir body; the bottom surface of cone two is fixedly connected to the right side surface of the weir body, one diagonal line of the bottom surface of cone two is perpendicular to the front side edge of the right side surface of the weir body, and another diagonal line of the bottom surface is perpendicular to the upper side edge of the right side surface of the weir body.
[0011] Furthermore, each of the closed ends of the sleeves is provided with a first air hole, and a second air hole is provided at the lower portion of the peripheral wall of the sleeve.
[0012] Through the above technical solution, the beneficial effects of the utility model are:
[0013] When water flows over the upper end of the weir body, a part of it can be converted into potential energy of the spring, and the energy dissipation column on the guide column dissipates the energy of the water flow. The guide column guides the water flow to impact the right side of the weir body, and multiple cones 1 and 2 on the right side of the weir body dissipate the energy of the water flow flowing along the right side of the weir body. The utility model can dissipate the energy of the water flow overflowing from the upper end of the weir body for multiple times, thereby reducing the adverse effects of the water flow on the downstream river channel.
[0014] The guide column of the utility model can change the flow direction of the water flow, so that the water flow impacts the right side of the weir body, thereby preventing the high-speed moving water flow from directly impacting the river channel. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 (left view);
[0016] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 (right view);
[0017] Figure 3 It is a sectional front view of the connection between the guide column and the connecting assembly of the utility model.
[0018] The numbers in the attached drawings are: 1. weir body, 2. guide column, 3. energy dissipation column, 4. sleeve, 5. connecting rod, 6. limit plate, 7. spring, 8. through hole, 9. cone one, 10. cone two, 11. air hole one, 12. air hole two. DETAILED DESCRIPTION
[0019] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:
[0020] like Figure 1 to Figure 3 As shown, an overflow weir comprises a weir body 1, wherein the longitudinal section of the weir body 1 is a trapezoid, and the left and right side surfaces are inclined surfaces, and the weir body 1 is a structure made of concrete material; it also comprises an energy dissipation member 1 and an energy dissipation member 2, wherein the energy dissipation member 1 comprises a guide column 2 and a connecting assembly, wherein the guide column 2 is a right-angled triangular prism disposed on the right part of the top surface of the weir body 1, wherein the top surface and the right side surface of the guide column 2 are both straight surfaces, and the left side surface is an inclined surface facing the top surface of the weir body 1, and energy dissipation columns 3 are evenly distributed on the left side surface of the guide column 2, wherein the energy dissipation columns 3 are cylindrical, and the guide column 2 A plurality of connecting components are arranged from front to back at intervals, and the connecting components include a sleeve 4 and a connecting rod 5. The sleeve 4 is a cylindrical body with an open end and a closed end. The open end of the sleeve 4 is connected to the top surface of the guide column 2. The connecting rod 5 is a round rod body with a diameter smaller than the inner diameter of the sleeve 4. One end of the connecting rod 5 is fixedly connected to the top surface of the weir body 1, and the other end of the connecting rod 5 penetrates the guide column 2 and extends into the sleeve 4, and is connected to a limiting plate 6. A spring 7 is connected between the limiting plate 6 and the closed end of the sleeve 4. A plurality of energy dissipation cones are fixed to the right side surface of the weir body 1.
[0021] The slope of the left side slope of the weir body 1 is greater than the slope of the right side slope; one end of each energy dissipation column 3 is vertically connected to the left side of the guide column 2, and the other end faces the top surface of the weir body 1.
[0022] The guide column 2 is a columnar body made of polyurethane material, which has the characteristics of light weight and high strength. The left side surface of the guide column 2 is an arc-shaped surface convex toward the upper right, and the front and rear ends of the left side of the guide column 2 are arc-shaped edges. The guide column 2 is provided with a through hole 8 for the connecting rod 5 to pass through, and the through hole 8 slides in contact with the connecting rod 5. The limit plate 6 is a circular plate body with a diameter corresponding to the inner diameter of the sleeve 4; when the spring 7 on each of the connecting components is in a natural state, the lower end of the guide column 2 contacts the right end of the top surface of the dam body 1.
[0023] When the limiting plate 6 contacts the guide column 2 , the guide column 2 moves upward to the limit state, and the circle where the left side of the guide column 2 is located intersects with the right side of the weir body 1 .
[0024] The energy dissipation cone includes a cone 1 9 and a cone 2 10, both of which are regular tetrahedrons of the same shape and size. The intersection of the four edges of the regular tetrahedron is the tip of the tetrahedron, and the surface of the regular tetrahedron opposite to the tip is the bottom surface of the tetrahedron. Multiple rows of cones 9 are fixed from top to bottom on the right side surface of the weir body 1, and multiple cones 9 arranged at intervals along the length direction of the weir body 1 form a row. A row of cones 2 10 is provided between two adjacent rows of cones 9. The upper part of each cone 2 10 extends into the upper row of cones 9 and between the lower parts of two adjacent cones 9, and the lower part of each cone 2 10 extends into the lower row of cones 9 and between the upper parts of two adjacent cones 9; there is a spacing between adjacent cones 1 9 and cones 2 10.
[0025] The bottom surface of cone 1 9 is fixedly connected to the right side surface of the weir body 1, and one diagonal line of the bottom surface of cone 1 9 is perpendicular to the front side edge of the right side of the weir body 1, and the other diagonal line of the bottom surface is perpendicular to the upper side edge of the right side surface of the weir body 1; the bottom surface of cone 2 10 is fixedly connected to the right side surface of the weir body 1, and one diagonal line of the bottom surface of cone 2 10 is perpendicular to the front side edge of the right side of the weir body 1, and the other diagonal line of the bottom surface is perpendicular to the upper side edge of the right side surface of the weir body 1.
[0026] Each of the sleeves 4 is provided with an air hole 11 at the closed end, and an air hole 2 12 is provided at the lower part of the peripheral wall of the sleeve 4. The air holes 11 and 12 are conducive to the upward and downward movement of the sleeve 4.
[0027] When in use, the weir body 1 is located in the river channel, and the two sides of the weir body 1 are the dam body or river bank, the dam body or river bank is higher than the guide column 2, the two ends of the guide column 2 contact the dam body or river bank, and the left side of the weir body 1 is the water-facing side; when the water flow on the left side of the weir body 1 is higher than the weir body 1, the water flow will flow to the right through the top surface of the weir body 1 and impact the left side of the guide column 2. Since the left side of the guide column 2 is an inclined surface, when the water flow impacts the left side of the guide column, the guide column 2 can drive the sleeve 4 to move upward, the spring 7 is stretched, and a part of the energy of the water flow impact is converted into the potential energy of the spring 7 for energy dissipation. After the guide column 2 moves upward, there is a gap between the lower end of the guide column 2 and the upper end of the weir body 1. Under the guidance of the left side of the guide column 2, the water flow can impact the right side of the weir body 1. When the water flows through the left side of the guide column 2, the multiple energy dissipation columns 3 can dissipate the energy of the water flowing to the right. A plurality of cones 1 9 and cones 2 10 are arranged on the right side surface. Since one diagonal line of the bottom surface of cone 1 9 is perpendicular to the upper side edge of the right side face of the weir body 1, and another diagonal line of the bottom surface is perpendicular to the upper side edge of the right side face of the weir body 1, the upper edge of cone 1 can cut and dissipate energy of the water flowing along the right side face of the weir body. When the water flows between two cones 1 9, since the upper part of each cone 2 10 extends into between the lower parts of two adjacent cones 1 9 in the upper row of cones 1 9, and one diagonal line of the bottom surface of cone 2 10 is perpendicular to the upper side edge of the right side face of the weir body 1, and another diagonal line of the bottom surface is perpendicular to the upper side edge of the right side face of the weir body 1, the upper edge of cone 2 10 can cut and dissipate energy of the water flowing between the two cones 1 9; therefore, the utility model can dissipate energy of the water overflowing from the upper end of the weir body 1 for many times, thereby reducing the adverse effects of the water flow on the downstream river channel.
[0028] The preferred implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings; however, the present invention is not limited to the above-mentioned embodiments. Without violating the spirit of the present invention, i.e., the disclosure scope, any equivalent or equivalent deformation or replacement of the technical solution of the present invention shall fall within the protection scope of the present invention.
Claims
1. An overflow weir, comprising a weir body (1), wherein the longitudinal section of the weir body (1) is a trapezoid, and the left and right side surfaces are inclined surfaces; characterized in that: It also comprises an energy dissipation component 1 and an energy dissipation component 2, wherein the energy dissipation component 1 comprises a guide column (2) and a connection assembly, wherein the guide column (2) is a right-angled triangular prism arranged on the right part of the top surface of the weir body (1), the top surface and the right side surface of the guide column (2) are both straight surfaces, and the left side surface is an inclined surface facing the top surface of the weir body (1), and energy dissipation columns (3) are evenly distributed on the left side surface of the guide column (2), and a plurality of connection assemblies are arranged on the guide column (2) at intervals, wherein the connection assembly comprises a sleeve (4) and a connecting rod (5), wherein the open end of the sleeve (4) is connected to the top surface of the guide column (2), one end of the connecting rod (5) is fixedly connected to the top surface of the weir body (1), and the other end of the connecting rod (5) passes through the guide column (2) and extends into the sleeve (4) and is connected to a limit plate (6), and a spring (7) is connected between the limit plate (6) and the closed end of the sleeve (4); and a plurality of energy dissipation cones are fixed on the right side surface of the weir body (1).
2. An overflow weir according to claim 1, characterized in that: The left side surface of the guide column (2) is an arc-shaped surface protruding toward the upper right, the front and rear ends of the left side of the guide column (2) are arc-shaped edges, and the guide column (2) is provided with a through hole (8) for the connecting rod (5) to pass through; when the spring (7) on each of the connecting components is in a natural state, the lower end of the guide column (2) contacts the right end of the top surface of the weir body (1).
3. An overflow weir according to claim 2, characterized in that: When the limiting plate (6) contacts the guide column (2), the guide column (2) moves upward to an extreme state, and the circle where the left side surface of the guide column (2) is located intersects with the right side surface of the weir body (1).
4. An overflow weir according to claim 1, characterized in that: The energy dissipation cone comprises a cone 1 (9) and a cone 2 (10), both of which are regular tetrahedral pyramids of the same shape and size. A plurality of rows of cones 1 (9) are fixed from top to bottom on the right side surface of the weir body (1). A plurality of cones 1 (9) arranged at intervals along the length direction of the weir body (1) form a row. A row of cones 2 (10) is arranged between two adjacent rows of cones 1 (9). The upper portion of each cone 2 (10) extends into the middle of the upper row of cones 1 (9) and between the lower portions of two adjacent cones 1 (9), and the lower portion of each cone 2 (10) extends into the middle of the lower row of cones 1 (9) and between the upper portions of two adjacent cones 1 (9).
5. An overflow weir according to claim 4, characterized in that: The bottom surface of the cone 1 (9) is fixedly connected to the right side surface of the weir body (1), one diagonal line of the bottom surface of the cone 1 (9) is perpendicular to the right side surface of the weir body (1), and the other diagonal line of the bottom surface is perpendicular to the right side surface of the weir body (1); the bottom surface of the cone 2 (10) is fixedly connected to the right side surface of the weir body (1), one diagonal line of the bottom surface of the cone 2 (10) is perpendicular to the right side surface of the weir body (1), and the other diagonal line of the bottom surface is perpendicular to the right side surface of the weir body (1).
6. An overflow weir according to claim 1, characterized in that: The closed end of each sleeve (4) is provided with a first air hole (11), and the lower part of the peripheral wall of the sleeve (4) is provided with a second air hole (12).