CO2 Low-Pressure Shut-Off Valve for Pressure Drop Detection
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Solution Overview
Problem
Current low-pressure shut-off valves for pressurized fluid systems, such as those using CO2, fail to effectively monitor and manage pressure drops, leading to inefficiencies and equipment downtime when CO2 liquefies and solidifies, requiring frequent servicing or replacement.
Innovation Solution
A CO2 low-pressure shut-off system incorporating a low-pressure shut-off valve with a solenoid valve and a gas monitor that controls the flow based on pressure thresholds, ensuring the system shuts off CO2 supply when pressure falls below a predetermined level, preventing CO2 solidification and enabling timely maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a low-pressure shut-off valve is used to monitor and cut off fluid flow when pressure falls below a desired level, then equipment downtime is reduced and operational efficiency is improved, but the system complexity increases due to the need for additional monitoring components and control mechanisms
Solution Approach 1:
The system divides the monitoring and control function into separate components: a gas monitor detects pressure levels, a solenoid valve responds to electrical signals to control flow, and a low-pressure shut-off valve executes the actual shut-off action. This segmentation allows each component to be optimized independently while working together to resolve the contradiction between productivity improvement and system complexity.
Solution Approach 2:
The gas monitor continuously monitors pressure levels in advance, detecting when pressure falls below the desired level before it causes equipment downtime. The solenoid valve is pre-configured to receive signals from the gas monitor and activate the shut-off valve proactively, preventing the harmful effect of low pressure rather than reacting to it after occurrence.
2Reliability
If continuous monitoring of pressurized fluid pressure is implemented to prevent CO2 solidification, then reliability is improved by preventing equipment failure, but energy consumption increases due to continuous operation of monitoring and control systems
Solution Approach 1:
The gas monitor provides continuous feedback on pressure levels to the solenoid valve, which adjusts the flow accordingly. This closed-loop feedback system maintains reliability by ensuring pressure never falls to dangerous levels, while the automated nature of the feedback loop eliminates the need for continuous high-energy intervention, allowing the system to operate efficiently at normal conditions.
Solution Approach 2:
The system is designed to monitor and self-regulate pressure automatically without requiring external intervention or continuous high-energy input. The gas monitor and solenoid valve work together in an autonomous manner to maintain pressure within acceptable ranges, with the system essentially policing itself and only consuming significant energy when corrective action is needed.
3Measurement precision
If a solenoid valve is added to control the flow of pressurized gas based on gas monitor signals, then measurement precision and automated control are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The system replaces manual mechanical pressure regulation with an automated electromechanical system. The gas monitor provides precise electrical measurements of pressure, and the solenoid valve uses electromagnetic actuation instead of manual mechanical adjustment. This substitution improves measurement precision and control accuracy while the modular design keeps the added complexity manageable through standardized components.
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 effectively detects pressure drops, preventing CO2 solidification and reducing equipment downtime by automatically shutting off the CO2 flow, thus maintaining operational efficiency and extending the lifespan of CO2 cylinders.
Implementation Method 1
a solenoid valve including a valve inlet, a first valve outlet, and a second valve outlet, the second valve outlet connected to and in fluid communication with the first valve inlet of the low-pressure shut-off valve. The solenoid may be configured to direct a flow of a pressurized gas from the valve inlet into at least one of the first valve outlet and the second valve outlet.
Data Source
AI summary
A CO2 low-pressure shut-off system is described. The low-pressure shut-off system may include a low-pressure shut-off valve including a first valve inlet, a second valve inlet and at least one valve outlet, a solenoid valve including a valve inlet, a first valve outlet, and a second valve outlet. The solenoid may be configured to direct a flow of a pressurized gas from the valve inlet into at least one of the first valve outlet and the second valve outlet. The CO2 low-pressure shut-off system further includes a gas monitor electrically coupled to the solenoid valve. The gas monitor may be configured to transmit one of a first signal and a second signal to the solenoid valve to control the flow of the pressurized gas through the solenoid valve.