Rotational flow sand discharging device and rotational flow sand discharging channel
A technology of flow and channel, applied in artificial waterways, water conservancy projects, marine engineering and other directions, can solve the problems of wear and tear of over-current components, reduction of pump efficiency, increase of water bulk density, etc., to achieve short processing time, low maintenance costs, structural simple effect
Active Publication Date: 2020-04-28
LANZHOU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
However, in the construction of cascade irrigation projects on rivers containing a large amount of sediment, after the forebay of the pump station is installed, some water flow containing sediment will still enter the pump, which will increase the bulk density of the water, reduce the flow rate, and reduce the efficiency of the pump. Abrasive damage to wetted parts
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[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0025] The first technical solution of the present invention is a cyclone sand discharge device, such as Figure 1-3 As shown, it includes a swirl swirl pipe 1, one end of the swirl swirl pipe 1 is connected to a sand discharge pipe 2, and the side wall of the swirl swirl pipe 1 is provided with a sand-laden water flow inlet 3, and the opening of the sand-laden water flow inlet 3 is upward The cross-section of the swirling pipe 1 is vortex-shaped, and the vortex-shaped swirling pipe is conducive to the generation of strong swirling flow with concentrated energy. After the strong swirling water entrains sediment, the sand-water mixture is discharged from the sand discharge pipe 2 ; The cross-section of the sandy water inlet 3 is trapezoidal, and the opening cross section changes from large to small. The small-sized inlet increases the flow velocity of ...
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The invention discloses a rotational flow sand discharging device. A rotational flow swirl starting pipe is included, and one end of the rotational flow swirl starting pipe is connected with a sand discharging pipe. A rotational flow sand discharging channel is further disclosed. A channel body is included, and a channel bottom plate is laid on the bottom surface of the channel body, and is provided with the rotational flow sand discharging device; the outer wall of a sand-containing water flow inlet is connected with the channel bottom plate; the rotational flow swirl starting pipe communicates with a cavity of the channel body, and is located below the channel bottom plate; and the rotational flow sand discharging device and the channel body achieve sand and water separation, it is effectively prevented that silt in a water diversion channel deposits and water flow containing lots of silt enters a fluid machine, the structure is simple, and achievement is easy.
Description
technical field [0001] The invention belongs to the technical field of canal sediment discharge reduction, and in particular relates to a swirl sand discharge device and a swirl sand discharge channel. Background technique [0002] In the diversion channel of the diversion hydropower station or the channel in front of the forebay of the pumping station, when the flow velocity of the water flow decreases, the suspended and transported sediment in the water flow will deposit on the bottom of the pool and channel, resulting in sediment deposition. However, in the construction of cascade irrigation projects on rivers containing a large amount of sediment, after the forebay of the pump station is installed, some water flow containing sediment will still enter the pump, which will increase the bulk density of the water, reduce the flow rate, and reduce the efficiency of the pump. Abrasive damage to wetted parts. How to effectively prevent the silt deposition in the water diversio...
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IPC IPC(8): E02B8/02E02B5/08
CPCE02B8/02E02B5/085
Inventor 南军虎罗涵袁福民杨霄张书峰高欢马保泰
Owner LANZHOU UNIVERSITY OF TECHNOLOGY