Siphonic Drainage Regulator Switching Gravity to Siphonic Flow
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Solution Overview
Problem
Traditional surface water drainage systems face limitations in capacity during heavy rainfalls, leading to potential accidents and backflow issues, and are costly and labor-intensive to install, especially when transitioning between gravity and siphonic drainage modes.
Innovation Solution
A drainage system that incorporates siphonic drainage regulators and air bleeder valves to manage water flow, allowing automatic switching between gravity and siphonic drainage, and includes check valves and multiple outlets to handle varying water levels and slopes, ensuring efficient water management and reducing maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional gravity drainage systems are used, then the system is simple to operate, but the drainage capacity is limited during heavy rainfalls
Solution Approach 1:
The drainage system dynamically switches between gravity flow mode and siphonic flow mode based on water volume. The siphonic regulators automatically adjust the drainage mechanism, transitioning from static gravity drainage to dynamic siphonic action when the water level reaches a certain threshold, thereby increasing drainage capacity during heavy rainfall without requiring complex manual control
Solution Approach 2:
The siphonic regulators are self-activating devices that automatically initiate siphonic flow when the water level in the tank reaches a predetermined height. No external control or manual intervention is needed - the system self-regulates by using the water itself to trigger the siphonic effect through the regulators, eliminating the need for complex control systems while maximizing drainage capacity
2Productivity
If siphonic drainage is implemented, then the drainage capacity increases, but the system requires more complex components and installation
Solution Approach 1:
The siphonic drainage functionality is segmented into modular siphonic regulators that can be independently installed in existing tanks. Rather than replacing the entire drainage system, the solution divides the function into discrete regulatory units that handle siphonic flow control, making installation more manageable and less costly while achieving enhanced drainage capacity
Solution Approach 2:
The siphonic regulators are designed to be universally applicable to existing drainage tanks and pipelines. The same regulator component can function in both new installations and retrofits of existing systems, serving multiple purposes: increasing drainage capacity, preventing backflow, and operating automatically without requiring system-specific customization, thereby simplifying manufacture and installation
3Productivity
If the system uses open manholes and pipelines, then air can be vented naturally, but the drainage capacity is limited and backflow risk increases
Solution Approach 1:
Siphonic regulators act as intermediary devices between the open drainage system and the requirement for backflow prevention. These regulators create a controlled water seal that prevents backflow while still allowing the system to vent air naturally through the tank opening, thus protecting the system without requiring complete sealing of all components
Solution Approach 2:
The system utilizes hydraulic principles through the siphonic effect to create negative pressure that prevents backflow. When water flows through the siphonic regulators, it creates a suction effect that actively resists backflow into the tank, while the open tank design maintains natural air venting, combining hydraulic action with passive atmospheric pressure management
4Productivity
If cascade systems with increasing diameter channels are used, then drainage capacity during heavy rainfalls is sufficient, but construction and planning costs increase significantly
Solution Approach 1:
Instead of statically increasing pipeline diameters along the cascade, the system dynamically enhances capacity by switching from gravity flow to siphonic flow through regulators. This dynamic mechanism allows existing pipelines to handle much larger volumes during heavy rainfall without requiring costly diameter increases or cascade construction
Solution Approach 2:
The system changes the flow regime parameter from gravity-driven flow to siphonic flow, fundamentally altering the drainage capacity characteristics. This parameter change enables existing infrastructure to achieve cascade-like drainage capacities without the physical construction of increased-diameter channels, significantly reducing construction and planning costs
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
The system enhances drainage capacity, reduces backflow and flood risks, and can be easily integrated into existing infrastructure, providing reliable and efficient water management with minimal maintenance, capable of handling both gravity and siphonic drainage modes seamlessly.
Implementation Method 1
In order to achieve sufficient drainage during heavy rainfalls, it is also known to use channels wherein the diameter increases in the downstream direction. The installation of these cascade systems is very laborious and costly... WO 2014/209133 it is described a system whereby the 'gravity flow' is replaced by a 'full current flow' wherein no gas is flowing together with the water. 'Full current flow' is also known as 'siphonic drainage' or 'siphonic flow'.
Implementation Method 2
In order to achieve sufficient drainage during heavy rainfalls, it is also known to use channels wherein the diameter increases in the downstream direction... In WO 2014/209133 it is described a system whereby the 'gravity flow' is replaced by a 'full current flow' wherein no gas is flowing together with the water.
Implementation Method 3
Another problem is related to backflow of water, as the water may flow back through the pipelines and out of another gutter, creating a flood. This is especially undesirable if drainage from buildings is connected to the same system, as large water damage may occur to the building.
Implementation Method 4
The flow is based upon water flowing by its own weight, and is called 'gravity flow' or 'gravity drainage'.
Data Source
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AI summary
System for drainage of surface water, the system comprises a number of tanks being connected to a main pipeline leading water to a recipient. Each tank has at least one outlet for leading water from the tank to the main pipeline, and a corresponding lid, the lid is limiting the outlet until the water is at a predetermined level in the tank. The system further comprises a check valve arranged downstream of the outlet of each tank, preventing water from entering the tank from the main pipeline, and at least one air bleeder valve and at least one siphonic drainage regulator arranged between a tank and the recipient.