Volatile Fluid Dispensing System with Phase Separation and Vapor Management
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Solution Overview
Problem
Current fluid application systems for agricultural fields, particularly those using anhydrous ammonia as fertilizer, face inefficiencies and safety issues due to particulates and vapor misapplication, which lead to operational problems and increased maintenance, as existing strainers are not designed for volatile fluids and sensors fail to detect vapor flow accurately.
Innovation Solution
A system that separates liquid and vapor within a container, using a sensor and controller to maintain the liquid level above a reference plane, with vapor valves to manage vapor release and a filtering system to collect and manage particulates, ensuring efficient fluid dispensing and reducing operator risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If strainers are used to remove particulates from fluid, then fluid purification is improved, but the strainers become plugged by particulates and additives, causing operating inefficiencies and increased maintenance time
Solution Approach 1:
The patent extracts the harmful particulates and loose materials from the fluid stream before they can reach and plug the strainers. The separation system removes these contaminants at the source (from the pressure vessel outlet), allowing the strainers to remain clear and functional, thus maintaining both purification quality and operating efficiency without increased maintenance time
Solution Approach 2:
The system performs preliminary separation of particulates from the fluid before the fluid enters the strainer system. By pre-removing contaminants through separation mechanisms (such as cyclonic separators or settling chambers), the strainers are protected from plugging in advance, ensuring continuous operation and eliminating the need for frequent maintenance interruptions
2Measurement precision
If sensors are used to detect fluid flow, then flow monitoring is improved, but the sensors fail to detect vapor flow accurately, resulting in misapplication of fluid
Solution Approach 1:
The patent implements different detection mechanisms for different phases of fluid. Instead of using a single sensor type that fails to distinguish vapor from liquid, the system employs phase-specific detection methods (such as thermal sensors for liquid and pressure/flow sensors for vapor), ensuring accurate monitoring of each phase separately and preventing misapplication due to undetected vapor flow
Solution Approach 2:
The system introduces an intermediary detection layer between the fluid source and the application point. This intermediary system includes multiple sensors that detect the presence and characteristics of both liquid and vapor phases, providing accurate information to the control system to prevent misapplication caused by undetected vapor flow
3Quantity of substance
If pressure vessels are used to contain anhydrous ammonia, then fluid storage is improved, but the vessels deteriorate over time due to pressure testing and rust, forming particulates that mix with the fluid
Solution Approach 1:
The patent extracts particulates and loose materials from the fluid stream using separation mechanisms (such as cyclonic separators, settling chambers, or filtration systems) positioned after the pressure vessel outlet. This continuous removal of contaminants prevents particulates from mixing with and contaminating the bulk fluid, maintaining fluid purity while preserving the pressure vessel's storage function
Solution Approach 2:
The system converts the harmful effect of pressure testing (which causes rust and particulate formation) into a manageable issue by implementing continuous separation and removal mechanisms. The pressure testing necessary for vessel integrity is maintained, but the resulting particulates are immediately separated from the fluid stream, turning a source of contamination into a controlled separation process that preserves fluid purity
4Ease of operation
If vapor is allowed to flow through the outlet with liquid, then fluid withdrawal is simplified, but vapor causes misapplication of fluid on the field and damages equipment
Solution Approach 1:
The patent segments the fluid withdrawal process into separate pathways for liquid and vapor phases. The outlet system is divided such that liquid flows through one path (optimized for application) while vapor is directed through a separate path (with separation and control mechanisms). This segmentation allows simple withdrawal operation while preventing vapor misapplication through phase-specific routing and control
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
The system enhances fluid application efficiency by preventing vapor misapplication, reducing maintenance needs, and ensuring safer operation by effectively separating and managing volatile fluids, thereby improving the accuracy and reliability of fertilizer distribution.
Implementation Method 1
The container is configured to separate the fluid into a liquid and a vapor such that at least a portion of the vapor is disposed above the liquid
Implementation Method 2
The sensor is configured to detect a level of the liquid in the container
Implementation Method 3
The at least one vapor valve is connected to the container and configured to exhaust vapor disposed above the liquid from the container
Data Source
AI summary
A system for dispensing a volatile fluid includes a container defining an interior space for holding the fluid. The container is configured to separate the fluid into a liquid and a vapor such that at least a portion of the vapor is disposed above the liquid. The system also includes a fluid inlet, a liquid outlet, a vapor valve, a sensor, and a controller. The liquid outlet is disposed above the fluid inlet and below a liquid reference plane defined through the container. The vapor valve is configured to exhaust vapor disposed above the liquid from the container. The sensor is configured to detect a level of the liquid in the container. The controller is configured to determine the level of the liquid and actuate the vapor valve to maintain the level of the liquid at or above the liquid reference plane.