Movable water inlet with head positioned by adopting upright post and buoy

Abstract

The invention discloses a movable water inlet with a head positioned by adopting an upright post and a buoy. The movable water inlet comprises a pipeline system, a positioning system, a buoy system and a tunnel plugging section, wherein the pipeline system comprises a water taking head, a floating pipe and a flange joint, and is a main water delivery structure for extending the water inlet to a reservoir for taking water; the positioning system is positioned at the front end of the pipeline system, comprises the upright post, a cast-in-place pile, an upright post expansion foundation, an O-shaped steel buoy, a steel frame and a positioning wheel, and is used for fixing the water taking head at the front end of the pipeline system on a plane and at an elevation; the buoy system comprises the buoy, a steel wire rope and a balancing weight, and is used for fixing the floating pipe at a certain depth below the water surface; and the tunnel plugging section is positioned at the tail end ofthe pipeline system, is a water retaining structure, and is also an overflowing channel for water in the pipeline system to flow to a downstream water delivery tunnel along a built-in fixed pipeline of the tunnel plugging section. The movable water inlet has the advantages of flexible water taking point and water taking elevation, good wind wave resistance of a system structure, high automatic degree along with water level rise and fall, and suitability for water diversion and supply projects with high requirements on water quality.

Description

technical field [0001] The invention relates to a water inlet structure in water conservancy and hydropower projects, in particular to a movable water inlet structure in a water diversion and supply project, the head of which can be far away from the reservoir bank and can take water at a fixed height below the water surface as the water surface fluctuates, and is positioned by a column and a buoy . Background technique [0002] Large-scale reservoirs have large storage capacity and low water fluidity. Due to the influence of water temperature, the water quality often has stratification. The surface water near the water surface has high temperature and high dissolved oxygen content, which is an ideal point for irrigation, water supply and water intake; the deep water near the bottom of the reservoir has a relatively high content of minerals due to the decomposition of organic matter, but the concentration of dissolved oxygen is low. When it is necessary to use the low tempe...

AI Technical Summary

Problems solved by technology

[0005] Although the layered water intake structure can take the water body relatively close to the surface layer of the reservoir, the position of the water inlet is also fixed in height. When there is a large change, it is necessary to switch between the opening and closing of gates at different elevations, and the operation and management are also troublesome

In addition, the location of the water inlet is close to the bank of the reservoir, and the water intake point is not flexible enough on the plane

[0006] There are also projects in which a funnel-like shaft-type water inlet is set in the middle of the reservoir far away from the bank, and the downstream of the water inlet is connected to a water delivery tunnel through the bottom of the reservoir. However, this water inlet also has the disadvantage that the water intake elevation cannot change with the water surface.

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