Gravity-Fed Pipeline Flow Control With Switchable Pump Assist
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Gravity fed irrigation pipeline systems face challenges in managing flow rates under limited pressure head conditions, requiring innovative solutions to avoid compounding interactions from head variations and meet additional pressure demands.
Innovation Solution
A method and system that incorporates a demand management system to monitor fluid flow rates and utilize a switchable pump, such as an Archimedes screw type, to increase flow rates when needed, along with fluid control gates and a combination of gravity and pressurized pipeline networks to manage flow effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a pump is used to increase pressure head in a gravity fed pipeline system, then additional pressure demands can be met, but energy consumption increases
Solution Approach 1:
The system dynamically switches between gravity-fed mode and pump-assisted mode based on real-time flow rate monitoring and demand conditions. The pump is activated only when additional pressure head is required to meet demand, rather than operating continuously, thereby reducing overall energy consumption while maintaining adequate pressure when needed.
Solution Approach 2:
The pipeline system primarily operates using gravity-fed flow, utilizing the natural potential energy of elevated water storage. This self-service approach eliminates the need for continuous pump operation, and the pump serves only as an auxiliary component activated when gravity alone is insufficient to meet demand.
2Productivity
If flow rate is increased to meet demand, then water distribution efficiency improves, but head variations cause compounding interactions that destabilize the system
Solution Approach 1:
The system incorporates real-time monitoring of flow rates and head conditions with a control system that adjusts pump operation and valve positioning based on feedback signals. This closed-loop control prevents compounding interactions from head variations by dynamically balancing flow distribution across the network, maintaining stability while meeting varying demand requirements.
Solution Approach 2:
The system changes operational parameters (pump speed, valve openings, flow distribution) in response to monitored head conditions and demand patterns. By dynamically adjusting these parameters rather than operating at fixed settings, the system can increase water distribution efficiency while preventing destabilizing compounding interactions from head variations.
3Stress or pressure
If a switchable pump is added to assist gravity fed flow, then pressure demands are met, but device complexity increases
Solution Approach 1:
The pipeline system is designed to serve dual purposes: gravity-fed operation for normal conditions and pump-assisted operation for peak demand or low-flow conditions. This multi-functionality allows a single system to handle varying pressure demands without requiring separate dedicated systems, thereby managing complexity while maintaining flexibility.
Solution Approach 2:
The control system acts as an intermediary that coordinates between the gravity-fed flow and pump operation. It monitors system conditions and determines when pump assistance is needed, managing the interaction between the two pressure sources to avoid complexity while ensuring adequate pressure head is maintained.
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
Enables efficient control of flow rates within limited head conditions, ensuring reliable operation under gravity and providing additional pressure when required, minimizing energy loss and optimizing water distribution.
Implementation Method 1
said pump is an Archimedes screw type pump in said pipeline network allowing fluid to flow therethrough when said pump is in the non-pumping mode
Implementation Method 2
gravity fed irrigation pipeline systems face challenges in managing flow rates under limited pressure head conditions
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention provides method and system of controlling flow rate in a pipeline network for fluids. The system includes a demand management system to monitor fluid flow rate in the pipeline network (10) and a pump (34) to increase the fluid flow rate when the demand management system determines an increase in fluid flow rate is required.