A box-type two-way flow channel with a built-in special-shaped thin-plate type anti-backflow device
A backflow device and two-way flow technology, applied in water supply devices, waterway systems, buildings, etc., can solve the problems of less research and great influence of the unit, and achieve the effect of weakening the backflow intensity, reducing hydraulic loss, and preventing the formation of the backflow area
Active Publication Date: 2021-05-18
YANGZHOU UNIV
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Problems solved by technology
[0004] At present, researches at home and abroad generally find that the blind-end backflow of the box-type two-way runner has a greater impact on the unit, and there are few studies on how to reduce or eliminate the blind-end backflow area and improve the flow state in the runner
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[0031] The present invention will be further described below in conjunction with the drawings and descriptions of the drawings.
[0032] A box-type two-way flow channel with a built-in special-shaped thin plate type backflow elimination device, including a water inlet flow channel, a water outlet flow channel, and a water pump placed between the water inlet flow channel and the water outlet flow channel. The water outlet flow channel is placed on the upper part of the water inlet flow channel. The water pump is provided with an impeller 4, one end of the water pump facing the water inlet flow channel is provided with a water inlet flow channel bell mouth 3, and one end of the water pump facing the water outlet flow channel is provided with a water outlet flow channel bell mouth 6.
[0033] The bottom of the water inlet channel is provided with the water guide cone 5 of the water inlet channel. In the bell mouth 3 of the water inlet channel; the water guide cone 7 of the water ...
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The invention relates to a special-shaped thin plate type backflow elimination device in a box-type two-way flow channel, which includes a water inlet flow channel, a water outlet flow channel and a water pump placed between the water inlet flow channel and the water outlet flow channel. The water outlet flow channel is placed on the upper part of the water inlet flow channel. The water pump is equipped with an impeller, the end of the water pump facing the water inlet flow channel is provided with a water inlet flow channel bell mouth, and the end of the water pump facing the water outlet flow channel is provided with a water outlet flow channel bell mouth; both ends of the water inlet flow channel and both ends of the water outlet flow channel are equipped with Separation piers, both sides of the separation pier are equipped with special-shaped thin-plate type backflow elimination devices, and a number of permeable holes are provided on the special-shaped thin-plate type backflow elimination devices; through the present invention, special-shaped thin-plate type backflow elimination devices are added in the water inlet and outlet channels, and the water flow When the water flow in the channel enters the blind end of the water inlet channel, the formation of the backflow area will be hindered because the backflow elimination device breaks the original water structure. To a certain diversion and rectification effect.
Description
technical field [0001] The invention relates to a box-type two-way flow channel with a built-in special-shaped thin-plate type backflow elimination device, belonging to the technical field of water conservancy engineering design. Background technique [0002] In the area along the river, due to the influence of natural conditions, in order to resist disasters such as drought and flood, there are nearly a hundred fixed low-lift pumping stations for flood control and disaster reduction. Among them, in order to meet the needs of agricultural irrigation and urban drainage at the same time, low-lift pumping stations along the river often use box-type two-way flow channels. The box-type two-way flow channel has a special structure. When the machine is turned on and running, there is always a blind end in the water inlet and outlet channels. Under non-design conditions, the backflow at the blind end is more serious, and because the outlet channel is relatively short, the backflow ...
Claims
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IPC IPC(8): E03F5/22
CPCE03F5/22
Inventor 成立焦伟轩周艳霞束明方周春峰车晓红
Owner YANGZHOU UNIV