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Arc-shaped division type stilling pool

A stilling pool and separated technology, applied in water conservancy projects, sea area engineering, coastline protection, etc., can solve the problems of downstream energy dissipation facilities not meeting the requirements of economy, high efficiency, safety, and low energy dissipation efficiency, and achieve excellent energy dissipation effect , Improve energy dissipation efficiency and reduce project cost

Active Publication Date: 2019-12-10
HOHAI UNIV
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Problems solved by technology

[0003] Aiming at the problem that the downstream energy dissipation facilities of existing water conservancy projects do not meet the needs of economy, high efficiency and safety, the purpose of this invention is based on the principle of hydraulic energy dissipation, and proposes an arc-shaped separation method to solve the problem of low energy dissipation efficiency. The high problem makes the new stilling basin better for flood discharge and energy dissipation

Method used

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  • Arc-shaped division type stilling pool
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  • Arc-shaped division type stilling pool

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Embodiment Construction

[0030] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0031] Such as Figure 1 to Figure 5 As shown, the following describes the composition and structure of each part in detail:

[0032] 1. Positive slope section

[0033] The positive slope section is the initial section of water discharge, and its descending height is H 1 , the horizontal length is L 1 , slope ratio is i 1 =H 1 / L 1 , i 1 ≈0.25~0.4, this slope ratio can ensure that the water discharge speed will not be too fast, and it will enter the stilling pool more stably.

[0034] Furthermore, the positive slope section is an inward arc expansion slope, that is, starting from the initial position, it expands to the end with an inward arc, and the radius of the inward arc is R 1 , the initial position width is B 1 , end width is D+2b 1 (D is the diameter of the bottom surface of the semicircular stilling column, b 1 is the distance...

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Abstract

The invention discloses an arc-shaped division type stilling pool. The arc-shaped division type stilling pool sequentially comprises an initial section in which current drainage is designed in an inwards-shrinking arc shape, a stilling pool middle section designed by wavy side walls and a semicircular prominent bottom face and a stilling pool tail section designed by a rectangular slope surface. The arc-shaped division type stilling pool is used for hydropower station downstream energy dissipation, drained current energy can be remarkably reduced, the energy dissipation efficiency is improved,the engineering safety is guaranteed, and economic benefits are increased.

Description

technical field [0001] The invention belongs to the field of energy dissipation of water conservancy projects, and in particular relates to an arc-shaped partition type stilling pool. Background technique [0002] Energy dissipation facilities are often built downstream of many large-scale water conservancy projects to reduce the energy of flood discharge and drainage and ensure the safety of downstream projects. At present, there are generally three energy dissipation methods, namely deflected flow energy dissipation, surface flow energy dissipation and underflow energy dissipation. Among them, deflected flow energy dissipation is more commonly used, but it often produces severe atomization, which affects The project is in normal operation; and the bottom flow energy dissipator is generally divided into three types: stilling pool, stilling wall and comprehensive stilling pool, which eliminate the energy of water flow by forming a submerged hydraulic jump, but these three ty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B8/06
CPCE02B8/06
Inventor 郑恺原
Owner HOHAI UNIV
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