Automatic Control Valve with Integrated Micro-Hydro Generator
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Solution Overview
Problem
Water utilities face significant energy costs and infrastructure challenges, with existing solutions for hydroelectric power generation in water systems being inefficient and not fully integrated with pressure control mechanisms.
Innovation Solution
An automatic control valve with an integrated micro-hydro electric generator that utilizes the pressure differential between an inlet and an outlet to generate electric power while maintaining downstream pressure, combining a pressure-reducing valve with a micro-hydroelectric turbine in a compact configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a traditional pressure reducing valve is used to control downstream pressure, then pressure control function is achieved, but energy is wasted without any power generation capability
Solution Approach 1:
The patent combines a pressure reducing valve with a micro-hydroelectric generator into a single integrated device. The valve body houses both the pressure control mechanism and the power generation components (impeller, generator), allowing simultaneous pressure reduction and electricity generation from the same water flow, thereby converting previously wasted hydraulic energy into useful electrical energy.
Solution Approach 2:
The patent converts the previously harmful energy waste in pressure reducing valves into a beneficial power generation source. By positioning an impeller and generator in the water flow path, the hydraulic energy that would have been dissipated is now captured and converted into electrical energy, transforming an energy loss into a useful resource.
2Loss of energy
If separate hydroelectric power generation equipment is installed in water systems, then power generation is achieved, but additional piping and physical space are required
Solution Approach 1:
The patent integrates the hydroelectric generator components directly within the pressure reducing valve housing. The impeller, generator, and associated mechanisms are contained inside the valve body, eliminating the need for separate power generation equipment and additional piping infrastructure. This compact integration reduces system complexity while maintaining power generation functionality.
Solution Approach 2:
The patent nests the micro-hydroelectric generator components (impeller, generator, shaft) within the existing pressure reducing valve structure. The generator components are positioned inside the valve body, utilizing the available internal space, thereby avoiding external installations and reducing overall system footprint.
3Adaptability or versatility
If flow conditions vary in the water system, then operational flexibility is maintained, but downstream pressure control becomes difficult
Solution Approach 1:
The patent incorporates a feedback mechanism where the downstream pressure sensor continuously monitors pressure conditions and adjusts the valve opening accordingly. This closed-loop control ensures that downstream pressure is maintained at the desired level regardless of variations in upstream pressure or flow conditions, providing reliable pressure control while adapting to changing system conditions.
Solution Approach 2:
The patent uses a dynamic valve opening mechanism that automatically adjusts the valve position based on real-time pressure and flow conditions. The valve stem and diaphragm assembly respond dynamically to pressure differential changes, maintaining stable downstream pressure control while adapting to varying flow rates and upstream pressure 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
This solution enables the efficient conversion of excess hydraulic energy into electricity, reducing energy costs and providing a sustainable energy source for water utilities by integrating hydroelectric power generation with pressure control, without the need for additional space or piping.
Implementation Method 1
An automatic control valve with an integrated micro-hydro electric generator... utilizes the pressure differential between an inlet and an outlet to generate electric power
Implementation Method 2
The second end of said the rotatable shaft is operably affixed to the generator in the open position
Implementation Method 3
designed to generate electric hydropower while controlling down-stream pressure regardless of flow conditions
Data Source
AI summary
An automatic control valve is provided for generating power based on fluid flow. In one example, the automatic control valve includes a primary passage including a valve seat disposed between an inlet and an outlet and a valve seat. A valve member is moveable between an open position and a closed position depending on the fluid flow. The automatic control valve includes a rotatable valve stem that is affixed at one end to an impeller and operably affixed to a drive shaft of a generator at the other end. As fluid flows to move the valve member to an open position, the impeller with the rotatable shaft and the drive shaft of the generator rotate to produce electric power.