Manhole Cover Float Valve for Storm Sewer Flooding
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Solution Overview
Problem
Localized flooding occurs due to debris blocking storm sewer openings, which existing technologies fail to address effectively, leading to infrastructure damage and safety risks.
Innovation Solution
A device comprising a manhole cover with an attached float body and canister, where water accumulation causes the cover and float body to rise, opening a valve to drain water into the sewer system, and includes a transmitter to alert external systems of flooding, along with guides to maintain orientation and prevent debris entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional manhole cover is used, then the structure is simple and easy to manufacture, but it cannot detect or respond to flooding conditions
Solution Approach 1:
The patent combines multiple functions into a single integrated device: the manhole cover serves as both a closure and a mounting platform for the float body, valve mechanism, and transmitter. The float body is coupled to both the cover and valve, creating a unified system that detects flooding and automatically responds by opening the valve to drain water.
Solution Approach 2:
The manhole cover assembly performs multiple functions: it provides mechanical closure of the sewer opening, houses the flooding detection mechanism (float body), controls water flow (valve), and communicates flooding status (transmitter). This multi-functional design addresses the technical contradiction by adding reliability without excessive complexity.
2Productivity
If the cover and float body are made to rise with water accumulation, then flooding is alleviated by opening the valve, but the device complexity increases
Solution Approach 1:
The float body automatically rises with water accumulation and mechanically opens the valve without external intervention. The buoyant force of the float body directly actuates the valve mechanism, creating a self-regulating system that responds autonomously to flooding conditions.
Solution Approach 2:
The system uses hydraulic principles where water accumulation creates buoyant force on the float body, which then mechanically actuates the valve to control water flow. The float body's displacement in water provides the actuating force needed to open the valve and drain the sewer.
3Reliability
If guides are added to maintain cover orientation and prevent debris entry, then reliability improves, but manufacturing complexity increases
Solution Approach 1:
The guide structure is divided into multiple guide members that are distributed around the periphery of the manhole cover. This segmentation allows each guide member to be independently positioned and attached, simplifying the manufacturing and assembly process while collectively providing stable orientation and debris prevention.
4Object-affected harmful factors
If a transmitter is added to alert external systems, then safety is enhanced, but device complexity and cost increase
Solution Approach 1:
The transmitter provides real-time feedback about flooding conditions to external monitoring systems. When the float body rises indicating flooding, the transmitter activates to alert authorities, creating a feedback loop that enables timely response to hazardous conditions.
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 device reduces flooding duration, enhances safety by alerting emergency services and visually notifying individuals of the raised position, and prevents infrastructure damage by efficiently draining water and notifying relevant parties of flooding events.
Implementation Method 1
the canister accumulates water which, in turn, causes the cover and float body to rise
Data Source
AI summary
A device for detecting and alleviating flooding and blocked storm sewers includes a manhole cover coupled to a float body. The device also includes a canister having a drain hole and a valve. The device also includes multiple guides that can catch onto part of a sewer. The device is configured such that when water flows into the canister, the manhole cover, float body, and guides rise and the valve is opened.