Differential trajectory jet energy dissipater in absorption basin

A differential type, stilling pool technology, applied in water conservancy projects, marine engineering, coastline protection and other directions, can solve the problems of hydraulic jump formation, cavitation damage, large space occupation, etc., to increase the single-wide flow range, The effect of strong anti-cavitation ability and project cost saving

Inactive Publication Date: 2009-09-23
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, conventional stilling basins of the traditional type either cannot meet the requirements of hydraulic jump formation and sufficient energy dissipation because the size of the stilling basin is too small; or because the size of the stilling basin is too large and occupies a large Moreover, its flow velocity near the bottom will also cause damage to the bottom plate

Method used

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  • Differential trajectory jet energy dissipater in absorption basin
  • Differential trajectory jet energy dissipater in absorption basin
  • Differential trajectory jet energy dissipater in absorption basin

Examples

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Embodiment

[0035] Figure 4 It is an example diagram of a combination of a stepped auxiliary energy dissipator and a differential triangular deflector sill energy dissipator in a conventional stilling basin in the optimization hydraulic model test of a certain engineering spillway exit stilling basin. The structure of the example is: the stilling basin 1 and the differential triangular ridge 2 are manufactured as a continuous whole. The differential triangular sill divides the stilling pool into two parts, the front pool 3 and the rear pool 4. The differential triangular sill is 25m in length along the water flow direction; The width is the same, 30m, and the lifting position is 25m away from the entrance of the stilling basin, which is about 1 / 3 of the length of the stilling basin; there are 4 deflecting troughs and 3 main deflecting sills in the differential triangular sill. Launders and main sills are symmetrically crossed left and right. The widths of the three main sills are all 5...

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Abstract

The invention relates to a differential trajectory jet energy dissipater in an absorption basin, belonging to the field of engineering hydraulics. The differential trajectory jet energy dissipater comprises the absorption basin and a differential triangular flip bucket energy dissipater arranged in the absorption basin, wherein the differential triangular flip bucket divides the absorption basin into a front basin and a rear basin; and the flip position thereof can be changed in the range of one fourth to two thirds of the length of the absorption basin. The up gradient of the upstream face of the differential triangular flip bucket is incontinuous, the part with higher gradient is a main flip bucket, the part with lower gradient is a trajectory jet groove, and the downstream gradient of the differential triangular flip bucket is continuous. The differential trajectory jet energy dissipater in the absorption basin not only shortens the length of the absorption basin and contributes to the saving of construction cost, but also increases the efficiency of energy dissipation, and has the extremely high ability of anti-cavitation. The differential trajectory jet energy dissipater can be used singly in any normal absorption basin and can also be combined with other assistant energy dissipaters in the normal absorption basin.

Description

technical field [0001] The invention relates to a deflector energy dissipator in a stilling pool, in particular to a differential deflector energy dissipator in a stilling tank, which belongs to the field of engineering hydraulics. Background technique [0002] In hydraulic engineering, in some low dam spillway, spillway and gate dam and other discharge structures, due to their large outlet energy, stilling basins need to be installed at their outlets to eliminate residual energy. The so-called "energy dissipation" in hydraulics does not refer to the "elimination" of energy, but refers to the conversion of energy. The conventional stilling tank mainly uses the hydraulic jump generated in the pool to dissipate the energy of the bottom flow, that is, the bottom flow energy dissipation is to use the stilling tank to make the discharged water flow generate a hydraulic jump within the limited range of the outlet of the discharge structure, and the hydraulic jump connects the upst...

Claims

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Application Information

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IPC IPC(8): E02B8/06
Inventor 李连侠沈焕荣易文敏
Owner SICHUAN UNIV
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