Turbulence chamber stilling pool

A vortex chamber and stilling pool technology, applied in water conservancy engineering, marine engineering, coastline protection, etc., to achieve the effects of strong turbulence, simple structure and stable water flow out of the pool

Active Publication Date: 2019-04-09
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the underflow energy dissipation of the large single wide flow spillway or the outlet of the spillway tunnel in the medium and high head hydropower station, the conventional structure design of the stilling basin is not enough to meet the actual engineering needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The vortex chamber stilling tank in this implementation case is used for underflow energy dissipation at the outlet of the spillway of the hydropower station with medium and high heads.

[0031] The maximum operating water head of a certain project is 80m, the spillway width B=8m, and the maximum single-width discharge is q=125m 3 / s.m; gradient i of gradually expanding reverse slope section 1 = h 1 / l 1 =1:10, the horizontal length of gradually expanding and reversed slope section l 1 = 30m, the vertical height h of the gradually expanding reverse slope section 1 = 3m, the bottom plate of the gradually expanding reverse slope section is a plane, and the radius R of the arc of the arc side wall 1 =102m, the left and right diffusion widths at the end of the gradually expanding reverse slope section are both b 1 =4.0m; the length of the vortex chamber L=57.75m, the widest point (B+2b 2 ) = 28m, b 2 =10.0m, arch height d=2.0m of curved bottom plate, arch length is (...

Embodiment example 2

[0034] The vortex chamber stilling tank in this implementation case is used for bottom flow energy dissipation at the outlet of the spillway tunnel of the middle and high head hydropower station.

[0035] The maximum operating water head of a certain project is 120m, the spillway width B=10m, and the maximum single-width discharge is q=100m 3 / s.m; gradient i of gradually expanding reverse slope section 1 = h 1 / l 1 =1:20, the horizontal length of the progressively expanding reverse slope section l 1 =100m, the vertical height h of the gradually expanding reverse slope section 1 = 5m, the bottom plate of the gradually expanding reverse slope section is a plane, and the radius R of the arc of the arc side wall 1=50.5m, the left and right diffusion widths at the end of the gradually expanding reverse slope section are both b 1 =10.0m; the length of the vortex chamber L=66.81m, the widest point (B+2b 2 ) = 40m, b 2 =15m, the arch height of the curved bottom plate of the vo...

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Abstract

The invention provides a turbulence chamber stilling pool which is arranged at a spillway or a tunnel spillway outlet, and is composed of a gradual expanded counter-slope section, a turbulence chamberand a tail ridge which are sequentially connected in a water flow direction, wherein the gradual expanded counter-slope section is connected with an upstream spillway or tunnel spillway outlet; the gradual expanded counter-slope section is composed of a slope surface bottom plate and side walls in symmetry on both sides of the bottom plate; a channel which is gradually expanded in the water flowdirection is formed; a falling ridge is arranged at the outlet of the tail end of the channel; the falling ridge is connected with the turbulence chamber downwards; the turbulence chamber is composedof a bottom plate and two arc-shaped side walls in symmetry on both sides of the bottom plate; the width of the turbulence chamber is gradually increased and gradually reduced from the outlet of the gradual expanded counter-slope section till the turbulence chamber is connected with tail ridge. The stilling pool is particularly applicable to energy dissipation by bottom flow in large single widthflow spillway or a tunnel spillway outlet of a medium / high water head hydropower station, and the problem of atomization caused by flip trajectory buckets can be avoided.

Description

technical field [0001] The invention belongs to the field of flood discharge and energy dissipation facilities used in water conservancy and hydropower projects, and in particular relates to a stilling pool. Background technique [0002] In water conservancy and hydropower projects, flood discharge and energy dissipation are very prominent key technical issues, and the energy dissipation and anti-scour downstream of the discharge structures are directly related to the safety of the project. According to a rough statistical analysis of a large number of actual engineering data, the cost of flood discharge and energy dissipation accounts for about 40% to 50% of the total project cost, and the cost of energy dissipation and anti-scour facilities accounts for 40% to 50% of the discharge structure. . Therefore, choosing a suitable flood discharge structure is an important way to make rational use of funds. For energy dissipation at the outlet of the large single wide flow spill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B8/06
CPCE02B8/06
Inventor 王磊刁明军
Owner SICHUAN UNIV
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