Liquid level height detection in a gas-liquid separator of a liquid supply type gas compressor
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Solution Overview
Problem
Existing liquid supply type gas compressors face challenges in accurately monitoring the liquid level height in gas-liquid separators due to minimal pressure and temperature differences between gases and liquids, leading to inaccurate detection and potential oil level misreadings.
Innovation Solution
A liquid supply type gas compressor system with internal pipes having multiple hole portions at different heights, a pressure or temperature detector, and a control device that determines fluid identity based on set values, allowing for accurate monitoring of liquid levels by distinguishing between gas and liquid flow through the piping system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a pressure detector is provided at a predetermined height position in the oil separator to detect liquid level, then the liquid level can be monitored, but the detection becomes inaccurate when the pressure difference between air and oil is minimal
Solution Approach 1:
The internal pipe is divided into multiple sections with hole portions at different height positions, allowing the system to segment the detection into multiple pressure measurement points. This enables accurate liquid level detection even when pressure differences are minimal by comparing pressures at different heights.
Solution Approach 2:
The internal pipe acts as an intermediary element that transmits pressure information from different liquid levels to the detector. By using the pipe as a mediator with multiple opening positions, the system can indirectly detect liquid level through pressure comparisons without direct contact with the liquid surface.
2Measurement precision
If a temperature detector is provided at a predetermined height position in the oil separator to detect liquid level, then the liquid level can be monitored, but the detection becomes inaccurate when the temperature difference between air and oil is minimal
Solution Approach 1:
The internal pipe is divided into multiple sections with hole portions at different height positions, allowing the system to segment the detection into multiple temperature measurement points. This enables accurate liquid level detection even when temperature differences are minimal by comparing temperatures at different heights.
3Measurement precision
If an optical detector is installed at a predetermined height position to detect the presence and absence of oil, then the liquid level can be detected, but false readings occur when oil continuously passes by or adheres to the detector
Solution Approach 1:
The internal pipe serves as an intermediary that channels fluid flow away from the detector. By directing oil and gas through the pipe with multiple hole portions, the system prevents direct contact between the detector and flowing oil, eliminating false readings caused by oil adhesion or continuous passage.
Solution Approach 2:
The invention replaces the optical detection method with a pressure-based detection method. Instead of using light to detect oil presence, the system uses pressure differences transmitted through the internal pipe to determine liquid level, avoiding the harmful effects of oil interference with optical detectors.
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 configuration enables precise monitoring of liquid level heights by identifying pulsations in pressure or temperature, ensuring accurate detection of liquid levels and preventing false readings, thus maintaining compressor performance.
Implementation Method 1
a detector that detects a pressure or a temperature of a fluid flowing through the liquid piping system
Implementation Method 2
a detector that detects a pressure or a temperature of a fluid flowing through the liquid piping system
Implementation Method 3
a control device that performs at least one of a determination as to whether or not the pressure or the temperature detected by the detector is more than a first set value set in advance and a determination as to whether or not the pressure or the temperature detected by the detector is less than a second set value which is set in advance to be less than the first set value
Data Source
AI summary
The liquid level of a liquid supply compressor including a gas-liquid separator is dynamically monitored. A liquid supply gas compressor includes a compressor body; a gas-liquid separator separates liquid from compressed gas, to store the liquid; a liquid piping system supplies liquid stored to the compressor body; an internal pipe extends in an internal space of the gas-liquid separator, and includes at least two hole portions, with different disposition positions in a height direction, on an internal side to communicate with the piping system; and a sensor detecting pressure or temperature of fluid flowing through the piping system.