Single Engine Flood Barrier Pumping System
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Solution Overview
Problem
Current engine-controlled winching and pumping systems for movable flood control barriers require multiple power sources, are complex, and often lack efficient operation under varying conditions, leading to issues like cavitation and the need for multiple skilled operators, especially in remote areas with limited power availability.
Innovation Solution
A single diesel engine powers both a centrifugal pump system for floating and sinking the barge and a hydraulic pump system for rotation, utilizing a speed reducer to prevent cavitation and an electro-magnetic clutch for independent operation, along with a priming system and solar charging for energy efficiency and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple power sources are used to operate the winching and pumping systems, then the system has sufficient power for all operations, but the device complexity increases and requires multiple skilled operators
Solution Approach 1:
The patent combines multiple power sources (engine and electric motor) into a single integrated power system that can operate independently or together. The engine drives the winch for positioning operations, while the electric motor (powered by batteries charged from solar panels) drives the centrifugal pump for water pumping. This merging allows the system to maintain sufficient power for all operations while reducing overall complexity compared to completely separate systems.
Solution Approach 2:
The engine serves multiple functions: it can directly drive the winch for rotation operations and also charge the batteries that power the electric motor for pumping operations. This multi-functionality ensures sufficient power availability across different operational modes while simplifying the overall power architecture by having one power source (the engine) support multiple critical functions.
2Productivity
If the centrifugal pump operates at high speed to quickly pump water, then productivity increases, but cavitation occurs reducing reliability
Solution Approach 1:
The patent uses a variable speed electric motor to dynamically adjust the centrifugal pump's operating speed based on real-time conditions. The motor can operate the pump at high speeds when needed for rapid water removal, and reduce speed when cavitation risk increases, maintaining both productivity and reliability through adaptive speed control rather than fixed operation.
Solution Approach 2:
The system incorporates monitoring that provides feedback on pump operation conditions, allowing the control system to adjust motor speed to prevent cavitation while maintaining efficient water pumping. This feedback mechanism ensures the pump operates within reliable parameters while still achieving high productivity when conditions permit.
3Device complexity
If a single engine powers both pumping and rotation systems, then device complexity reduces and ease of operation improves, but the engine must handle varying power demands efficiently
Solution Approach 1:
The single engine incorporates a variable speed drive system that dynamically adjusts its output based on the specific operational requirements. Whether driving the winch for rotation or the centrifugal pump for water removal, the engine can optimize its speed and power output to match the immediate demands, maintaining versatility while simplifying the power source architecture.
Solution Approach 2:
The engine system changes its operational parameters (speed, torque, power output) based on the specific task being performed. This allows a single engine to effectively replace multiple fixed-output power sources by adapting its characteristics to match the varying power demands of different operations, reducing complexity while maintaining adaptability.
4Loss of time
If the barge is rapidly deployed by pumping out water quickly, then response time to flooding events decreases, but the pumping system must operate under high stress conditions
Solution Approach 1:
The variable speed electric motor allows the pumping system to operate dynamically, starting at high speeds for rapid water removal to achieve quick deployment, then automatically reducing speed as the operation progresses or if stress thresholds are approached. This dynamic operation minimizes deployment time while preventing excessive stress on the pumping system.
Solution Approach 2:
The system is designed with capacity for rapid pumping operations from the outset, with the electric motor sized and controlled to handle high-stress rapid deployment scenarios. By preparing the system in advance with sufficient power capacity and appropriate control strategies, the patent enables quick response to flooding events without subjecting the pumping system to unsustainable stress levels during operation.
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
This solution simplifies the operation, reduces the need for multiple power sources, enhances efficiency, and ensures rapid deployment and reliable operation of the floodgate, even in remote areas with limited power, by using a single engine to manage both water pumping and rotation functions efficiently.
Implementation Method 1
the centrifugal pump is actuated by the engine, causing the on-board containers to empty of water
Implementation Method 2
an electro-magnetic clutch for independent operation
Implementation Method 3
utilizing a speed reducer to prevent cavitation
Implementation Method 4
solar charging for energy efficiency and reliability
Data Source
AI summary
A dual pumping system for use on a movable flood control barrier structure to allow the structure to be swung into the opening of a waterway and sunk to prevent flooding during storms and then floated and swung out of the waterway after the storm is disclosed. A buoyant generally rectangular barge may be employed as the movable flood control barrier. A centrifugal pumping system pumps water into compartments within the barrier structure so it sinks to the bottom of the waterway while the same pumping system pumps water back to the waterway to float the structure. A hydraulic pumping system operates hydraulic winches to move the structure into and out of the channel using cables. The two pumping systems are capable of operating both the water pumping system and hydraulic winch system simultaneously or independently with a single engine.