Valve Apparatus Sequential Zone Activation for Flow Control
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Solution Overview
Problem
Irrigation systems face challenges in managing variance in liquid flow rates due to simultaneous activation of multiple valves, leading to increased operational costs and energy requirements, as they need to support larger flow rates during flushing cycles.
Innovation Solution
The implementation of a valve apparatus that transitions between states to control liquid flow in a 'leaping' manner, allowing each section of the irrigation system to open and close sequentially, reducing the overall system's flow rate increase during flushing by enabling each valve to operate at its second flow rate only when necessary, and using fluid pressure commands to trigger these transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple valves are activated simultaneously in an irrigation system, then flushing effectiveness is improved, but the variance in liquid flow rate increases requiring larger capacity pumps and more expensive system design
Solution Approach 1:
The irrigation system is divided into multiple zones with valves that operate sequentially rather than simultaneously. Each valve controls a specific zone and activates in sequence, segmenting the overall flushing operation into discrete temporal segments. This segmentation maintains flushing effectiveness for each zone while preventing peak flow rate accumulation that would occur with simultaneous activation of all valves.
2Adaptability or versatility
If multiple valves are activated simultaneously in an irrigation system, then comprehensive coverage is improved, but operational costs and energy consumption increase
Solution Approach 1:
The valve activation system employs periodic action by cycling through zones in a sequential manner rather than continuous simultaneous activation. Each valve operates during its designated time period, creating a periodic pattern of activation across the system. This periodic approach ensures comprehensive coverage of all zones while significantly reducing peak energy consumption and operational costs compared to simultaneous activation.
3Productivity
If larger capacity pumps are used to support simultaneous valve activation, then flow rate requirements are met, but system cost increases
Solution Approach 1:
The system transitions from a static configuration requiring large capacity pumps for peak simultaneous demand to a dynamic system where valve activation timing is adjusted sequentially. This dynamic approach allows the use of smaller, more cost-effective pumps that only need to handle the flow rate of individual zones at any given time, rather than the cumulative peak flow rate of all zones activated simultaneously.
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 approach significantly reduces the operational costs and energy consumption by limiting the maximum increase in overall flow rate to less than the sum of individual second flow rates, allowing the system to maintain efficient operation with smaller capacity pumps and reduced piping requirements.
Implementation Method 1
using fluid pressure commands to trigger these transitions
Implementation Method 2
an elastic membrane that divides an enclosed space in the valve into upstream and downstream compartments. 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
Data Source
AI summary
A valve assembly includes an inlet and an outlet, and has a first state where liquid is stopped from flowing from the inlet towards the outlet, a second state where liquid is released to flow from the inlet towards and out of the outlet, and a terminal state where after flowing out of the outlet, the liquid is stopped form flowing out of the outlet. An incoming command triggers the valve assembly from the first state towards the second state and, at or after reaching the terminal state, the valve assembly transmits an outgoing command.