Adjustable Inlet Water Drainage System for Green Roof Flooding
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Solution Overview
Problem
Current green roof drainage systems fail to meet stringent requirements for prolonged water retention during heavy rain events, leading to flooding issues, as they are designed to manage water for a short duration and then exceed permissible discharge limits, lacking flexibility in water balance management.
Innovation Solution
A water drainage system with a shaft and adjustable inlet opening controlled by an actuating device and control system, allowing real-time adjustment of water discharge based on weather data and environmental conditions, enabling flexible water retention and balance management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If conventional green roof drainage systems are used, then water discharge is managed for short duration, but water retention cannot be maintained during prolonged heavy rain events
Solution Approach 1:
The patent applies the dynamics principle by implementing an adjustable inlet opening that can dynamically change its opening size based on environmental conditions. The control device receives weather data and automatically adjusts the inlet opening degree to optimize water retention duration during prolonged heavy rain events while maintaining reliable discharge control. This dynamic adjustment mechanism allows the system to adapt to varying rainfall intensities and durations, resolving the contradiction between extended retention duration and discharge control reliability.
2Adaptability or versatility
If fixed runoff coefficient is used, then design simplicity is maintained, but flexibility in water balance management is lost
Solution Approach 1:
The patent implements feedback control by equipping the system with a control device that receives weather data (such as rainfall predictions) and automatically adjusts the inlet opening degree accordingly. This feedback mechanism provides flexibility in water balance management by enabling real-time adaptations to changing environmental conditions. The automated control reduces the need for complex manual interventions while maintaining adaptability, thus resolving the contradiction between management flexibility and system complexity.
3Productivity
If inlet opening size is fixed, then system simplicity is maintained, but real-time water discharge optimization is impossible
Solution Approach 1:
The patent applies dynamics by replacing the fixed inlet opening with an adjustable mechanism controlled by a control device. This allows real-time optimization of water discharge by dynamically adjusting the inlet opening degree based on received weather data and environmental conditions. The automated adjustment mechanism achieves productivity optimization without requiring complex manual operations, resolving the contradiction between discharge optimization and mechanism complexity.
Data Source
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AI summary
The invention relates to a water drainage system (1) comprising a shaft (2) that can be erected on a water surface (U) having a drain (A), in particular a roof surface, and which has a side wall (4) that surrounds a cavity (3) in a watertight manner and which has at least one inlet (5) with at least one inlet opening (50) through which water can enter the cavity (3), wherein at least one closure (6) for watertight sealing of the at least one inlet opening (50), an actuating device (7) for moving the at least one closure (6), and a control device (8) for controlling the actuating device (7) are provided. The invention further relates to a gravel or green roof comprising the water drainage system and to a method for regulating the water level on a gravel or green roof.