Staggered Valve Control for Drip Irrigation Flow Variance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Irrigation systems with multiple valves experience significant variance in liquid flow rate due to simultaneous activation, requiring excessive design capacity to support peak flow rates during flushing and irrigation, leading to inefficiencies and increased costs.
Innovation Solution
A drip irrigation system with a distribution pipe and branching drip pipes, each equipped with flushing and inlet valves, and command valves that control the opening and closing of these valves to manage flow rates, allowing for staggered flushing and irrigation to maintain a consistent system flow rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple valves are activated simultaneously for flushing and irrigation, then flushing and irrigation functions are achieved, but the liquid flow rate variance increases significantly requiring excessive design capacity
Solution Approach 1:
The system divides the irrigation network into multiple sections, each controlled by a separate command valve. This segmentation allows independent control of valve activation in different sections, enabling staggered flushing operations that prevent simultaneous activation of all valves, thereby reducing peak flow rate variance.
Solution Approach 2:
The system implements periodic flushing cycles where command valves are activated in a sequential manner rather than simultaneously. Each command valve opens and closes in a timed sequence, creating periodic action patterns that distribute the flow rate demand over time and reduce overall variance.
2Productivity
If the system is designed to support peak flow rates during simultaneous valve activation, then flushing and irrigation can be performed, but system efficiency decreases and costs increase
Solution Approach 1:
The system dynamically adjusts the operation timing of different valve sections based on actual system conditions. Command valves can be programmed to activate at different times, and the system adapts the flushing schedule to match actual irrigation needs, avoiding the inefficiency of fixed simultaneous activation and reducing unnecessary peak flow demands.
3Quantity of substance
If more command valves are added to control flushing sequences, then flow rate variance is reduced, but system complexity increases
Solution Approach 1:
The command valves are designed with multi-functionality, serving both as control elements for staggering flushing operations and as monitoring points for system flow management. This universal design reduces the need for additional specialized components, controlling complexity while maintaining effective flow rate variance reduction.
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 configuration limits the increase in overall system flow rate during flushing, achieving a smaller variance and resulting in a more efficient and cost-effective system design by configuring the number of drip pipes in each section to balance irrigation and flushing flow rates.
Implementation Method 1
an elastic membrane that divides an enclosed space in the valve into upstream and downstream compartments. The valve has a passage between the compartments and a discharge opening in the upstream compartment. Flow of water from the upstream compartment flowing into the downstream compartment flexes the membrane in the upstream direction until it closes against the discharge opening
Implementation Method 2
Upon drop and cessation of the upstream pressure, the membrane will return to its un-flexed state and the valve will be ready for a subsequent flushing action
Data Source
AI summary
A drip irrigation system includes a distribution pipe and drip irrigation pipes that branch off in communication with the distribution pipe. Each drip pipe has a flushing valve coupled to a downstream end and at least some of the drip pipes each have an inlet valve coupled to an upstream end for communication with the distribution pipe. The system further has at least one command valve in communication with the distributing pipe and also with at least some of the inlet vales, wherein opening of the command valve is configured to close the at least some inlet valves.