Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
On-way energy dissipation structure giving consideration to desilting and overhauling and design method
The invention belongs to the technical field of pumped storage engineering, and particularly relates to an on-way energy dissipation structure giving consideration to desilting and overhauling and a design method. The on-way energy dissipation structure comprises a bottom plate, a plurality of obtuse-angle nested stepping runner units are arranged above the bottom plate in the water flow direction, the longitudinal section of each obtuse-angle nested stepping runner unit is an obtuse-angle triangle, side walls are arranged on the two sides of the bottom plate, and a tooth groove is formed in the downstream end of the bottom plate in the water flow direction. Drop flow or sliding flow is generated in the obtuse-angle flow channels through water flow, the water flow rolls and dissipates energy among the flow channel units of the obtuse-angle nested steps and then is discharged, air-entrainment uniform flow is formed, a downstream energy dissipater can be replaced, or the scale of the downstream energy dissipater can be reduced, and the downstream protection difficulty can be reduced. Sediment can be smoothly discharged under various flows, energy dissipation and sediment discharging are both considered, the problem that discharged water flow carries sediment to be deposited at the corner of the step is solved, and meanwhile overhaul and maintenance in the later operation process of a project are facilitated.
本发明属于抽水蓄能工程技术领域，特别涉及一种兼顾排沙和检修的沿程消能结构及设计方法。一种兼顾排沙和检修的沿程消能结构，包括底板，底板上方沿着水流方向设有多个钝角嵌套踏步的流道单元，钝角嵌套踏步的流道单元的纵截面为钝角三角形，底板两侧设有边墙，底板在沿水流方向下游一端设有齿槽。本发明通过水流在钝角流道内产生跌流或滑行流，水流在多个钝角嵌套踏步的流道单元之间翻滚消能后下泄，形成掺气均匀流，可取代下游消能工或减小下游消能工的规模，减小下游防护难度，与现有的台阶式消能工相比，有利于泥沙在各种流量下顺利排出，兼顾消能与排沙，解决下泄水流携带泥沙在台阶隅角淤积问题，同时便于工程后期运行过程中的检修和维护。
On-way energy dissipation structure giving consideration to desilting and overhauling and design method
The invention belongs to the technical field of pumped storage engineering, and particularly relates to an on-way energy dissipation structure giving consideration to desilting and overhauling and a design method. The on-way energy dissipation structure comprises a bottom plate, a plurality of obtuse-angle nested stepping runner units are arranged above the bottom plate in the water flow direction, the longitudinal section of each obtuse-angle nested stepping runner unit is an obtuse-angle triangle, side walls are arranged on the two sides of the bottom plate, and a tooth groove is formed in the downstream end of the bottom plate in the water flow direction. Drop flow or sliding flow is generated in the obtuse-angle flow channels through water flow, the water flow rolls and dissipates energy among the flow channel units of the obtuse-angle nested steps and then is discharged, air-entrainment uniform flow is formed, a downstream energy dissipater can be replaced, or the scale of the downstream energy dissipater can be reduced, and the downstream protection difficulty can be reduced. Sediment can be smoothly discharged under various flows, energy dissipation and sediment discharging are both considered, the problem that discharged water flow carries sediment to be deposited at the corner of the step is solved, and meanwhile overhaul and maintenance in the later operation process of a project are facilitated.
本发明属于抽水蓄能工程技术领域，特别涉及一种兼顾排沙和检修的沿程消能结构及设计方法。一种兼顾排沙和检修的沿程消能结构，包括底板，底板上方沿着水流方向设有多个钝角嵌套踏步的流道单元，钝角嵌套踏步的流道单元的纵截面为钝角三角形，底板两侧设有边墙，底板在沿水流方向下游一端设有齿槽。本发明通过水流在钝角流道内产生跌流或滑行流，水流在多个钝角嵌套踏步的流道单元之间翻滚消能后下泄，形成掺气均匀流，可取代下游消能工或减小下游消能工的规模，减小下游防护难度，与现有的台阶式消能工相比，有利于泥沙在各种流量下顺利排出，兼顾消能与排沙，解决下泄水流携带泥沙在台阶隅角淤积问题，同时便于工程后期运行过程中的检修和维护。
On-way energy dissipation structure giving consideration to desilting and overhauling and design method
一种兼顾排沙和检修的沿程消能结构及设计方法
LIU JIEYU (Autor:in) / CAI XINHE (Autor:in) / FAN JIANPENG (Autor:in) / SHANG YUJUN (Autor:in) / LI HE (Autor:in) / WANG YA'E (Autor:in)
30.08.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
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