Hydraulic Pump Gravity Powered Water Transfer
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Solution Overview
Problem
Conventional water pumping systems rely on electricity and are inefficient in converting high-pressure primary fluid into low-pressure secondary fluid with high flow, lacking a flow intensification mechanism and wasting energy by dumping high-pressure fluid externally.
Innovation Solution
A hydraulic pumping system utilizing a series of reservoirs and conduits powered by gravity, where high-pressure water from a higher reservoir drives a hydraulic pump to transfer water from a lower reservoir to a higher elevation, incorporating a water tower, sand trap, and control valves to regulate flow and pressure, and optionally generating electricity through a turbine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If conventional electric pumps are used to pump water, then water can be delivered to higher elevations, but electricity consumption and energy losses increase
Solution Approach 1:
The patent employs a hydraulic pump that utilizes water pressure from a first reservoir to directly drive the pumping mechanism, eliminating the need for electric motors. The hydraulic system converts the potential energy of water at elevation into mechanical work to pump water to higher elevations, achieving energy-efficient water delivery without electricity consumption.
Solution Approach 2:
The system uses the water from the first reservoir to power itself - the falling water provides the hydraulic pressure needed to operate the pump. This self-powered mechanism eliminates external energy inputs, as the water's own gravitational potential energy drives the entire pumping process.
2Stress or pressure
If direct-acting reciprocating pumps are used to intensify pressure, then output liquid pressure increases, but volumetric flow intensification is not achieved
Solution Approach 1:
The patent changes the operational parameters by using a variable stroke length mechanism that adjusts the piston displacement based on system needs. This allows the pump to optimize between pressure intensification and volumetric flow delivery, achieving both high pressure and high flow rates by dynamically adjusting the stroke parameters rather than being fixed in one mode.
3Ease of operation
If external mechanisms are used to trigger stroke reversal in pumps, then stroke reversal can be achieved, but fluid is wasted and efficiency decreases
Solution Approach 1:
The pump employs an automatic stroke reversal mechanism that uses the system's own hydraulic pressure and flow conditions to trigger reversal without external intervention. The spool valve automatically responds to pressure differential changes, enabling the piston to reverse direction without dumping fluid or requiring external control systems, thereby eliminating fluid waste and maintaining efficiency.
Solution Approach 2:
The stroke reversal system incorporates feedback from the hydraulic pressure conditions within the pump. When the piston reaches the end of its stroke or when pressure differentials indicate the need for reversal, the spool valve automatically responds to these feedback signals and adjusts the flow direction, enabling precise and efficient stroke reversal without fluid loss.
4Strength
If piston rods are subjected to compression in conventional pumps, then structural integrity is maintained, but stroke lengths are limited
Solution Approach 1:
The patent inverts the loading condition on the piston rod by designing the hydraulic actuation system to apply tensile forces rather than compressive forces during the power stroke. This inversion allows the piston rod to achieve much longer stroke lengths without compromising structural integrity, as tensile loading better suits the rod's mechanical properties and reduces buckling risks.
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
Efficiently pumps water from a lower elevation to a higher elevation without electricity, utilizing renewable energy and filtering water as it is pumped, while maintaining constant pressure and generating electricity, thus addressing inefficiencies in existing systems.
Implementation Method 1
the pump operatively arranged to be powered by the first liquid when the first liquid is permitted to fall due to gravity
Implementation Method 2
The pump uses the pressure forces in the first liquid to power to pump the second liquid
Data Source
AI summary
A system for pumping liquid having a first reservoir at a first elevation, which stores a first liquid, a second reservoir at a second elevation, where the second elevation is substantially lower than the first elevation, the second reservoir stores a second liquid, a third reservoir at a third elevation, where the third elevation is substantially lower than the first elevation, the second elevation is higher than the third elevation, the third reservoir arranged to store the second liquid, and, at least one hydraulic pump connected to the first reservoir via a first conduit, connected to the second reservoir via a second conduit, connected to the third reservoir via a third conduit, the pump arranged to be powered by the first liquid when the first liquid is permitted to fall due to gravity, the pump arranged to pump the second liquid from the third reservoir to the second reservoir.