Double-slideway rotational flow type side wall energy dissipation vertical shaft

A swirl-type, double-slide technology, which is applied in the field of drainage engineering, can solve the problems of affecting the flow capacity of the slideway, the energy dissipation effect of the shaft, the stability of the inflow of the water pipeline, and the safe and stable operation of the drainage system. Achieve the effects of alleviating the uneven distribution of water surface, inhibiting cavitation and cavitation erosion, and improving energy dissipation rate

CN108221884AActive Publication Date: 2018-06-29HOHAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2018-06-29

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Abstract

The invention discloses a double-slideway rotational flow type side wall energy dissipation vertical shaft. The vertical shaft comprises an overflowing well and an exhaust well which are arranged concentrically, and the overflowing well is connected between a water inlet channel and a water outlet channel; an annular rotational flow region is formed between the outer side wall of the exhaust welland the inner side wall of the overflow well, and the annular rotational flow region is divided into a rotational flow slideway through an isolation bottom plate which is spirally arranged from top tobottom; multiple flow distribution plates are arranged on the isolation bottom plate in the rotational flow slideway, and the flow distribution plates divide the rotational flow slideway into an inner slideway body and an outer slideway body; and energy dissipation vertical partition plates are arranged on the outer side wall of the inner slide way and the outer side wall of the outer slide way.According to the vertical shaft, the flow distribution plates are used for dividing the water flow into two parts, so that the flow passage capacity of a flow slideway is improved, the water amount isdistributed uniformly in the rotational flow slideway, so that the " water fin " phenomenon of the top layer of the rotational flow slide way is reduced, and the energy dissipation rate of the vertical shaft is improved.
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Description

technical field

[0001] The invention relates to the technical field of drainage engineering, in particular to a dual-slide swirling side wall energy dissipation shaft. Background technique

[0002] Energy dissipation shaft is a kind of vertical water conveyance fortification, and the upper layer of water flows through the energy dissipation structure in the shaft for energy dissipation and then output. It is often used in water conservancy projects such as hydropower stations and municipal drainage systems. At present, the main shaft structure forms are: drop type, folded plate type, slideway swirl type, ladder swirl type, etc. Among them, the slideway swirl type energy dissipation shaft has flexible layout, and the water inlet and outlet may not be on the same straight line, which is better adaptable to the terrain. However, in the traditional slideway swirling shaft, the water flow rotates along the slideway to discharge. Under the action of centrifugal force, the water s...

Examples

Embodiment

[0025] The double-slide swirl side wall energy dissipation shaft of this embodiment is as follows: figure 1 As shown, it includes flow well 1 and exhaust well 2 which are set inside and outside concentrically; the upper part of flow well 1 is connected with water inlet channel 3, and the lower end is connected with outlet channel 4; the outer wall of exhaust well 2 is connected with the inner side of flow well 1 A ring-shaped swirl area is formed between the walls; in the ring-shaped swirl area, a number of isolated bottom plates are spirally arranged from top to bottom to form a swirl slideway 5, and a number of equidistant splitter plates 6 are arranged upward along the midline of the bottom plate of the swirl slideway 5, and the The swirl slideway 5 is divided into an inner slideway and an outer slideway connected to the top and the side; several first vertical partitions 8 are arranged at equal intervals on the outer sidewall of the inner slideway, and several second vertic...