Pneumatic Fluid-Stream Separator for Gas-Safe Automatic Drainage
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Solution Overview
Problem
Current liquid and gas separators in industrial processes face risks of human error and electrical system limitations, leading to hazardous conditions due to improper drainage, especially in environments where electrical controls are prohibited or unavailable.
Innovation Solution
A pneumatic operation system for valves in a separator device that ensures only one valve is open at a time, using liquid sensors and pneumatic control to automatically adjust between states based on liquid thresholds, preventing gas escape and ensuring safe drainage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual operation of drain valve is used, then device complexity is reduced, but reliability deteriorates due to human error and improper drainage
Solution Approach 1:
The separator system performs self-drainage through automatic valve operation controlled by liquid level sensors. The system monitors its own liquid levels and autonomously opens/closes valves to drain liquid, eliminating the need for manual operator intervention and ensuring consistent reliable operation.
Solution Approach 2:
Liquid level sensors provide continuous feedback on the liquid level in the separator vessels. This feedback signal controls the pneumatic valves to open when drainage is needed and close when the liquid level is sufficient, creating a closed-loop control system that ensures reliable automatic drainage.
2Extent of automation
If electrical control systems are used for valve operation, then automation level increases, but safety deteriorates due to spark risk in hazardous environments
Solution Approach 1:
The patent replaces electrical control systems with a pneumatic control system. Pneumatic actuators powered by compressed air or gas are used to open and close the drainage valves, eliminating electrical components and potential spark hazards in environments with flammable gases.
Solution Approach 2:
The control system uses pneumatic pressure to actuate the drainage valves. Compressed gas or air is used to move the valve mechanisms, providing a safe alternative to electrical actuation in hazardous atmospheres while maintaining automatic control capability.
3Device complexity
If single valve operation is used, then device complexity is reduced, but reliability deteriorates due to inability to prevent gas escape
Solution Approach 1:
The drainage control system is segmented into multiple independent valves (first drainage valve and second drainage valve) that can be controlled separately. This segmentation allows the system to open one valve for drainage while keeping another closed to contain gas, preventing gas escape during the drainage process.
Solution Approach 2:
The system uses liquid level sensors to detect when drainage is needed and proactively opens the appropriate valve before gas escape can occur. The sequential operation of valves is predetermined by the control logic, ensuring gas containment is maintained throughout the drainage cycle.
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 minimizes gas escape and ensures safe, automatic drainage without electrical components, suitable for environments where electrical controls are restricted or unavailable.
Implementation Method 1
A pneumatic operation system for valves in a separator device that ensures only one valve is open at a time, using liquid sensors and pneumatic control to automatically adjust between states
Implementation Method 2
Within many industrial processes, there is a need to separate liquids from gases. For example, such processes may include oil refineries, natural-gas processing plants, petrochemical and chemical plants, refrigeration systems, air conditioning systems, compressor systems, gas pipelines and the like. In such processes, gravity is utilized in a vessel to cause the liquid to settle to the bottom of the vessel, where it is withdrawn.
Data Source
AI summary
Disclose is a separator for separating liquid from a fluid stream including a mixture of gas and liquid. The separator comprises a first vessel including an outlet and an inlet for receiving the fluid stream, the first vessel in fluid communication with a second vessel via a first valve, the second vessel in fluid communication with a liquid outlet via a second valve, wherein the first vessel is arranged to enable the liquid to flow into the second vessel. The separator also has a second valve for controlling release of liquid from the second vessel, the first and second valves being pneumatically operated, the pneumatic operation of the first and second valves allowing only one of the first and second valves to be open during operation of the separator.