Reservoir Sediment Flushing Funnel With Gravity-Triggered Valve Control
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Solution Overview
Problem
Existing methods for reservoir sediment flushing, such as sediment discharge gates, mechanical dredging, and siphon sediment flushing, are inefficient, energy-intensive, and wasteful of water resources, leading to reservoir siltation and ecological damage.
Innovation Solution
A smooth automatic device and method utilizing a sediment flushing funnel and pipe system with a trigger-control mechanism, driven by pressure differences, to automatically discharge sediment under gravitational force, reducing clogging and energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sediment discharge gate is opened frequently to discharge sediment, then sediment discharge efficiency is improved, but water resources are wasted
Solution Approach 1:
The sediment discharge system is segmented into separate components: a sediment discharge tunnel for efficient sediment removal and a sediment discharge gate for controlled water release. This segmentation allows sediment to be discharged through the tunnel while minimizing water loss through the gate, resolving the contradiction between discharge efficiency and water conservation
Solution Approach 2:
A sediment discharge tunnel acts as an intermediary structure between the reservoir and downstream channel. It provides a dedicated pathway for sediment transport that operates independently from the main gate system, enabling efficient sediment removal without requiring frequent gate operations that waste water resources
2Productivity
If mechanical dredging is used to remove sediment, then sediment discharge efficiency is improved, but energy and manpower consumption increase
Solution Approach 1:
The sediment discharge tunnel utilizes the natural gravitational force and water flow to transport sediment automatically from the reservoir to the downstream channel. This self-service mechanism eliminates the need for mechanical dredging equipment, significantly reducing energy and manpower consumption while maintaining high sediment discharge efficiency
Solution Approach 2:
The mechanical dredging system is replaced with a gravity-based sediment discharge tunnel. The tunnel uses the natural potential energy of water and sediment to drive the discharge process, substituting mechanical energy input with gravitational force, thereby reducing energy consumption while improving discharge efficiency
3Productivity
If siphon sediment flushing is used, then sediment can be discharged from reservoir bottom, but the process is time-consuming and energy-consuming
Solution Approach 1:
The complex siphon mechanism is replaced with a simple gravity-driven sediment discharge tunnel. The tunnel allows sediment to flow continuously under gravitational force without the need for mechanical suction heads or complex siphon operations, significantly reducing both time and energy consumption while maintaining the capability to discharge sediment from the reservoir bottom
4Volume of stationary object
If clear-water-storage and muddy-water-discharge method is used, then reservoir capacity is maintained, but large amount of water is released during flood season
Solution Approach 1:
The water discharge system is segmented into two independent pathways: a sediment discharge tunnel for removing muddy water and sediment, and a clear-water gate for controlled release. This segmentation enables the reservoir to maintain its capacity by discharging sediment through the tunnel while minimizing water loss, resolving the contradiction between capacity maintenance and water conservation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances sediment discharge efficiency, conserves water and energy, and improves downstream ecological environments by effectively flushing sediment into rivers, maintaining reservoir capacity and generating hydropower.
Implementation Method 1
allowing sediment to be discharged gravitationally into downstream channels
Implementation Method 2
trigger-control mechanism and transmission gears to open a sediment flushing ball valve when sediment pressure reaches a threshold
Data Source
AI summary
This invention reveals a smooth automatic device and method for efficiently flushing sediment from a reservoir. It includes a sediment flushing funnel located at the reservoir dam's bottom, connected to a sediment flushing pipe. This pipe extends from the funnel's bottom through a smooth connecting pipe, horizontally through the dam, and then to the downstream river channel. Inside the funnel, a trigger-control mechanism is installed, linked to a sediment flushing ball valve within the sediment flushing pipe. The invention operates by automatically opening the ball valve when sediment accumulation in the funnel hits a preset threshold. The sediment is then released into the downstream river channel via the smooth connecting pipe and flushing pipe, driven by gravity. This system offers an effective solution for automatic reservoir sediment flushing, boasting high efficiency, energy conservation, and water resource savings.