Flip bucket structure suitable for various levels of flow and energy dissipater

Abstract

The invention relates to the technical field of flip bucket energy dissipation, in particular to a flip bucket structure suitable for all levels of flow and an energy dissipater, the flip bucket structure suitable for all levels of flow comprises an energy dissipation flip bucket, the energy dissipation flip bucket comprises a plurality of bucket units, and the elevations of the bucket units are gradually reduced; an energy dissipation step is arranged between every two adjacent nose ridge units. According to the structure, the good flip flow energy dissipation effect can be guaranteed when large flow is discharged, the step face can be adopted for energy dissipation when small flow is discharged, discharged water flow smoothly enters a downstream river channel, and therefore scouring damage to a downstream slope protection and a bank slope is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of flow diversion and energy dissipation, and in particular to a diversion sill structure and energy dissipation device suitable for various levels of flow. Background Art

[0002] In water conservancy and hydropower projects, the commonly used energy dissipation methods downstream of the spillway include surface flow energy dissipation, scoop flow energy dissipation, bottom flow energy dissipation and diversion flow energy dissipation. Among them, diversion flow energy dissipation is achieved by setting a diversion flow nose sill at the end of the spillway, using the diversion flow nose sill to lift the water flow into the air, diffuse it, mix it with a large amount of air, and then fall into the downstream riverbed water cushion to form a swirl to achieve energy dissipation. It can adapt to different tailwater amplitudes and medium and high heads, large, medium and small flow types of buildings, and is more common in large and medium-sized water conservancy and hydropower projects. When the downstream flow is greater than the diversion flow, the downstream water flow is diverted into the downstream river channel through the diversion flow nose sill; but when the downstream flow is less than the diversion flow, the downstream water flow will continue to scour the downstream slope protection, which is easy to cause scouring and damage to the downstream slope protection and foundation, thereby further endangering the stability and safety of the diversion flow nose sill.

[0003] Therefore, it is very necessary to provide a sill structure and energy dissipation device suitable for various flow rates. Summary of the invention

[0004] The purpose of the present invention is to address the defects of the prior art and provide a cantilever structure and energy dissipation device suitable for various flow rates, which can not only ensure a good cantilever flow and energy dissipation effect when discharging a large flow, but also ensure that a step surface is used for energy dissipation when discharging a small flow, so that the discharged water flows smoothly into the downstream river channel, thereby avoiding scouring and damage to the downstream slope protection and bank slope.

[0005] In order to solve the above technical problems, in a first aspect, the present invention provides a ridge structure suitable for various levels of flow, including an energy dissipation ridge, wherein the energy dissipation ridge includes a plurality of nose ridge units, the elevations of the plurality of nose ridge units gradually decrease, and an energy dissipation step is arranged between two adjacent nose ridge units.

[0006] Furthermore, multiple energy dissipation steps are arranged between two adjacent nose sill units.

[0007] Furthermore, a platform is arranged between two adjacent energy dissipation steps.

[0008] Furthermore, two nose sill units are provided, and two energy dissipation steps are provided between the two nose sill units.

[0009] In a second aspect, the present invention provides an energy dissipator, comprising a flood discharge chute and a flow diversion structure, wherein the flow diversion structure is arranged at the end of the flood discharge chute, and the flow diversion structure comprises the energy dissipation diversion ridge.

[0010] Furthermore, a partition wall is arranged in the flood spillway, and the partition wall divides the flood spillway into a plurality of flow channels.

[0011] Furthermore, it includes a dam body, a plurality of flood discharge outlets are provided on the dam body, the plurality of flood discharge outlets correspond one-to-one to a plurality of flow channels, the diversion structure includes a conventional diversion nose sill, the energy dissipation diversion sill is arranged at the end of some of the flow channels, and the conventional diversion nose sill is arranged at the end of other flow channels.

[0012] Furthermore, the conventional flow nose sill includes a flow nose sill and a downstream slope protection.

[0013] Furthermore, the downstream slope protection is arranged in multiple levels, and platforms are arranged between the multiple levels of downstream slope protection.

[0014] Furthermore, the distance between the energy dissipation sill and the flood discharge outlet is smaller than the distance between the conventional sill and the flood discharge outlet.

[0015] The beneficial effects of the present invention are:

[0016] 1. The energy dissipation sill of the present invention comprises a plurality of nose sill units, and an energy dissipation step is arranged between two adjacent nose sill units. By adopting the energy dissipation sill, when the flood discharge flow is large, the large flow can be directly diverted out, and when the flood discharge flow is small, the water flow can be diverted through a plurality of nose sill units, and energy is dissipated through the energy dissipation step during the diversion process, so that when the water flow is diverted by the last nose sill unit, the energy is small, thereby greatly reducing the scouring of the downstream slope.

[0017] 2. The energy dissipation device of the present invention combines the energy dissipation sill with the conventional flow nose sill, which can not only ensure a good flow dissipation effect when discharging a large flow, but also ensure that the step surface is used for energy dissipation when discharging a small flow, so that the discharged water flows smoothly into the downstream river channel, thereby avoiding scouring and damage to the downstream slope protection and bank slope. Avoid setting too many energy dissipation sills to increase the construction workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The schematic diagram of the structure of the energy dissipation sill of the present invention is shown in FIG. Figure 3 AA section view in );

[0019] Figure 2 It is a structural schematic diagram of the energy dissipator of the present invention;

[0020] Figure 3 It is a schematic structural plane diagram of the energy dissipator of the present invention;

[0021] Figure 4 For the present invention Figure 3 Middle BB cross-section.

[0022] Figure numerals: energy dissipation sill 1; nose sill unit 2; energy dissipation step 3; flood discharge chute 4; flow channel 5; conventional flow nose sill 6; downstream slope protection 7; partition wall 8. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] like Figure 1 As shown, the present invention provides a ridge structure suitable for various levels of flow, including an energy dissipation ridge 1, the energy dissipation ridge 1 includes a plurality of nose ridge units 2, the elevations of the plurality of nose ridge units 2 gradually decrease, and an energy dissipation step 3 is arranged between two adjacent nose ridge units 2.

[0025] It can be understood that, by adopting the energy dissipation sill 1, when the flood discharge flow is greater than the sill starting flow, the large flow can be directly diverted out; when the flood discharge flow is less than the sill starting flow, the water flow can be diverted through multiple nose sill units 2, and energy is dissipated through the energy dissipation steps 3 during the diversion process, so that when the water flow is diverted by the last nose sill unit 2, the energy is relatively small, thereby greatly reducing the scouring of the downstream slope.

[0026] Furthermore, a multi-level energy dissipation step 3 is arranged between two adjacent nose sill units 2 .

[0027] By providing a plurality of energy dissipation steps 3 , it is ensured that the water flow with a small flow rate can fully dissipate energy between two adjacent nose sill units 2 .

[0028] Furthermore, a platform is provided between two adjacent energy dissipation steps 3 .

[0029] Furthermore, two nose sill units 2 are provided, and two energy dissipation steps 3 are provided between the two nose sill units 2 .

[0030] It should be noted that generally, two nose sill units 2 are sufficient to meet the requirements. After the small flow of water is selected through the first large nose sill unit 2, it is energy-dissipated by the energy dissipation step 3 and then selected by the second smaller nose sill unit 2. At this time, the selected water flow has little impact on the downstream slope.

[0031] like Figure 2 , 3 As shown, the present invention provides an energy dissipation device, including a flood discharge chute 4 and a flow diversion structure. The flow diversion structure is arranged at the end of the flood discharge chute 4, and the flow diversion structure includes an energy dissipation diversion 1.

[0032] Furthermore, a partition wall 8 is provided in the flood spillway 4 , and the partition wall 8 divides the flood spillway 4 into a plurality of flow channels 5 .

[0033] Furthermore, it includes a dam body, a plurality of flood discharge outlets are arranged on the dam body, the plurality of flood discharge outlets correspond one to one with the plurality of flow channels 5, the diversion structure includes a conventional diversion nose sill 6, energy dissipation diversion sill 1 is arranged at the end of some flow channels 5, and conventional diversion nose sill 6 is arranged at the end of other flow channels 5.

[0034] Furthermore, the conventional flow nose sill 6 includes a flow nose sill and a downstream slope protection 7 .

[0035] Furthermore, the downstream slope protection 7 is provided in multiple levels, and platforms are provided between the multiple levels of downstream slope protection 7 .

[0036] Furthermore, the distance between the energy dissipation sill 1 and the flood discharge outlet is smaller than the distance between the conventional sill 6 and the flood discharge outlet.

[0037] It is understandable that the energy dissipation worker combines the energy dissipation sill 1 with the conventional flow nose sill 6. When the flood discharge is greater than the lifting flow, both the energy dissipation sill 1 and the conventional flow nose sill 6 can be used for energy dissipation. When the flood discharge is less than the lifting flow, the energy dissipation sill 1 is used alone for energy dissipation. The energy dissipation worker can ensure that when a large flow is discharged, a good flow dissipation effect is achieved, and when a small flow is discharged, a step surface is used for energy dissipation, so that the discharged water flows smoothly into the downstream river channel, thereby avoiding scouring and damage to the downstream slope protection 7 and the bank slope. Avoid setting too many energy dissipation sills 1 to increase the construction workload.

[0038] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A ridge structure suitable for various flow rates, characterized in that: The energy dissipation sill (1) comprises a plurality of nose sill units (2), the elevations of the plurality of nose sill units (2) gradually decrease, and an energy dissipation step (3) is arranged between two adjacent nose sill units (2).

2. The ridge structure applicable to various flow rates according to claim 1 is characterized in that: A plurality of energy dissipation steps (3) are arranged between two adjacent nose sill units (2).

3. The ridge structure applicable to various flow rates according to claim 2 is characterized in that: A platform is arranged between two adjacent energy dissipation steps (3).

4. The ridge structure applicable to various flow rates according to claim 1 is characterized in that: Two nose sill units (2) are provided, and two energy dissipation steps (3) are provided between the two nose sill units (2).

5. An energy dissipator according to any one of claims 1 to 4, suitable for a cantilever structure at various flow rates, characterized in that: It comprises a flood discharge chute (4) and a flow diversion structure, wherein the flow diversion structure is arranged at the end of the flood discharge chute (4), and the flow diversion structure comprises the energy dissipation diversion ridge (1).

6. The energy dissipator according to claim 5, characterized in that: A partition wall (8) is arranged in the flood discharge trough (4), and the partition wall (8) divides the flood discharge trough (4) into a plurality of flow channels (5).

7. The energy dissipator according to claim 6, characterized in that: The invention comprises a dam body, wherein a plurality of flood discharge openings are provided on the dam body, wherein the plurality of flood discharge openings correspond to a plurality of flow channels (5) one by one, wherein the diversion structure comprises a conventional diversion nose sill (6), wherein the energy dissipation diversion sill (1) is arranged at the end of some of the flow channels (5), and the conventional diversion nose sill (6) is arranged at the end of other flow channels (5).

8. The energy dissipator according to claim 7, characterized in that: The conventional flow nose sill (6) comprises a flow nose sill and a downstream slope protection (7).

9. The energy dissipator according to claim 8, characterized in that: The downstream slope protection (7) is arranged in multiple stages, and platforms are arranged between the multiple stages of downstream slope protection (7).

10. The energy dissipator according to claim 7, characterized in that: The distance between the energy dissipation sill (1) and the flood discharge outlet is smaller than the distance between the conventional flow nose sill (6) and the flood discharge outlet.

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