Jet Transfer Assembly Using Negative Pressure for Tank Water Supply
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Solution Overview
Problem
Firefighting in rural areas without a pressurized water source faces challenges due to insufficient water transfer rates from portable holding tanks, limiting fire engine pump capacity to 1250-1500 GPM, necessitating multiple hoses and strainers, which still fall short of required flow rates.
Innovation Solution
A water jet transfer device with a jet transfer assembly, intake assembly, and output barrel, utilizing negative demand pressure and a check valve system to efficiently transfer water between tanks at 1250-1500 GPM, including flexible tubing, a jet tube, and a check valve assembly to maintain pressure and flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a six-inch diameter rigid suction hose with low-level strainer is used to transfer water, then the transfer rate is limited to 600-750 GPM, but the fire engine pump requires 1250-1500 GPM capacity
Solution Approach 1:
The system divides the water transfer function into multiple parallel pathways using two suction hoses with respective low-level strainers, allowing the system to achieve 1200-1500 GPM total transfer rate by combining the capacity of individual hoses, thereby meeting the fire engine pump's 1250-1500 GPM requirement
Solution Approach 2:
Multiple suction hoses and strainers are combined in parallel configuration to aggregate their individual flow capacities, creating a composite transfer system that delivers the required 1250-1500 GPM to maintain full fire engine pump capacity during water transfer operations
2Productivity
If multiple suction hoses and strainers are used to increase water transfer rate, then the flow rate increases to 1200-1500 GPM, but the device complexity increases
Solution Approach 1:
The low-level strainers are designed to perform multiple functions: filtering debris from water, maintaining suction capacity, and enabling parallel hose operation. This multi-functionality allows the system to achieve high transfer rates (1200-1500 GPM) while managing complexity through standardized, versatile components that can be deployed in parallel configurations
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 ensures consistent water transfer at 1250-1500 GPM, maintaining fire engine pump capacity by eliminating the need for multiple hoses and strainers, ensuring continuous operation and efficient water distribution.
Implementation Method 1
a jet tube that establishes a negative demand pressure within the body
Implementation Method 2
a check valve assembly having a valve support plate and a flexible valve seal member secured to the valve support plate
Data Source
AI summary
A water jet transfer device includes a jet transfer assembly, an intake assembly and an output barrel. The jet transfer assembly includes a body having a water-outlet end coupled to a first section of flexible tubing and a water-intake end coupled to a second section of flexible tubing. The jet transfer assembly also includes a jet tube that establishes a negative demand pressure within the body and a check valve assembly having a valve support plate and a flexible valve seal member secured to the valve support plate. The second section of flexible tubing is coupled to an intake assembly positioned in a water holding tank containing water. The first section of flexible tubing is coupled to an output barrel through which water drawn through the intake assembly and into the body responsive to the negative demand pressure is delivered to another water holding tank.