Liquid Degassing Nozzle and Float Valve System
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Solution Overview
Problem
Existing methods for degassing liquids in closed circulation systems are inefficient in removing gas, particularly as they require complex controls and do not effectively increase the surface area for degassing, limiting the amount of gas that can be removed per unit time.
Innovation Solution
The method involves passing a partial flow of liquid through a nozzle into a chamber with a degassing pressure higher than atmospheric but lower than the system's working pressure, creating a jet or mist, and using a rise pipe and float-operated valve to separate and remove gas, ensuring the chamber is only partially filled to maximize surface area and simplify control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the liquid is passed through a pressure relief valve into a degassing apparatus with pre-adjusted overpressure, then the degassing process is controlled, but the surface area for gas separation is insufficient and gas removal efficiency is low
Solution Approach 1:
The liquid stream is segmented into droplets by passing it through a nozzle at degassing pressure, creating a mist or spray pattern in the chamber. This segmentation dramatically increases the total surface area available for gas separation compared to a continuous liquid stream, thereby improving gas removal efficiency while maintaining simple pressure-based control
Solution Approach 2:
The invention transitions from a single-phase liquid flow to a multi-dimensional spray pattern by introducing the liquid through a nozzle into a chamber. This creates droplets distributed throughout a three-dimensional space, effectively increasing the surface area for gas separation without requiring a larger chamber volume
2Measurement precision
If complex control systems are used to manage degassing pressure and flow, then precise control is achieved, but the device complexity increases
Solution Approach 1:
The system uses a self-regulating float-operated valve that automatically maintains the degassing pressure without requiring external control systems. The float valve responds automatically to pressure changes, opening or closing based on the liquid level in the chamber, thereby achieving precise pressure control while keeping the device simple
Solution Approach 2:
The float-operated valve provides automatic feedback control by monitoring the liquid level in the chamber and adjusting the pressure relief accordingly. When the liquid level rises, the float opens the valve to release pressure; when it falls, the valve closes, maintaining stable degassing pressure without complex electronics or control systems
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 increases the surface area for degassing, allowing more efficient removal of gas from the liquid, while maintaining simple control over the degassing process without the need for complex controls, as the degassing pressure is the only parameter that needs to be managed.
Implementation Method 1
passing at least a partial flow of the liquid through a restriction into a chamber in which a degassing pressure is maintained, the degassing pressure being higher than atmospheric pressure and lower than the working pressure
Implementation Method 2
spraying at least the partial flow of the liquid through the nozzle into the chamber for obtaining a jet and/or mist of the liquid in the chamber
Implementation Method 3
the step of removing the gas from the chamber is effected via a rise pipe and a float operated valve, the rise pipe having an entry opening allowing escape of gas when the liquid level is below the entry opening
Implementation Method 4
the rise pipe having an entry opening allowing escape of gas when the liquid level is below the entry opening and allowing the gas to accumulate in the head when the liquid level is above the entry opening
Data Source
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AI summary
Method and device for degassing a liquid of a substantially closed liquid circulation system at a working pressure. The method comprises passing at least a partial flow of the liquid through a restriction into a chamber in which a degassing pressure is maintained, the degassing pressure being higher than atmospheric pressure and lower than the working pressure, separating gas withdrawn from the partial flow of liquid from the partial flow, removing the gas from the chamber, and pumping the degassed partial flow of the liquid back into the substantially closed circulation system. The restriction comprises a nozzle, and the step of passing at least the partial flow of the liquid through the restriction into the chamber comprises spraying at least the partial flow of the liquid through the nozzle into the chamber for obtaining a jet and/or mist of the liquid in the chamber.