Hydraulic Gas Compressor Control for Fluid Contamination Prevention
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Solution Overview
Problem
Hydraulic gas compressors used in oil and gas field environments face issues of potential contamination of the hydraulic fluid due to components of the natural gas being compressed, leading to inefficient operation and increased costs.
Innovation Solution
Adaptive control of the hydraulic fluid supply to a piston in a hydraulic gas compressor, monitoring piston speed, temperature, and load pressure to optimize the reversal of the driving force, using proximity sensors and a controller to ensure smooth transitions and maximum compression efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hydraulic gas compressors are used in oil and gas field environments, then gas compression function is achieved, but hydraulic fluid contamination occurs
Solution Approach 1:
The system divides the compression process into distinct phases (compression stroke and expansion stroke) with separate valve control mechanisms. The suction valve and discharge valve are independently controlled to prevent gas leakage into the hydraulic fluid chamber during compression, while maintaining efficient gas compression during the expansion phase.
Solution Approach 2:
A check valve is introduced as an intermediary component between the gas compression chamber and the hydraulic fluid chamber. This check valve allows controlled communication between the two chambers during specific phases while preventing reverse flow of gas into the hydraulic fluid, thus protecting the hydraulic fluid from contamination.
2Productivity
If conventional gas compressor operation is used, then basic compression function is provided, but operational efficiency is reduced
Solution Approach 1:
The system employs dynamically controlled valves that adjust their opening and closing timing based on real-time pressure and flow conditions. The electronic control system monitors piston position, pressure differential, and flow rate to optimize valve timing, ensuring maximum compression efficiency while minimizing energy losses during the compression cycle.
Solution Approach 2:
Pressure sensors and flow meters provide continuous feedback to the electronic control system, which adjusts the valve timing and opening duration to maintain optimal compression efficiency. The system learns from operational patterns and continuously refines its control strategy to reduce energy waste.
3Ease of manufacture
If simple compressor design is used, then manufacturing cost is reduced, but wear and longevity are increased
Solution Approach 1:
The system replaces complex mechanical wear-prone components (such as mechanical linkages and friction-based control mechanisms) with electronic control systems that use sensors, actuators, and electronic logic to manage valve timing and compression cycles. This substitution reduces mechanical wear while maintaining or improving reliability and longevity.
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 adaptive control system enhances the efficiency and longevity of the compressor by preventing hydraulic fluid contamination and optimizing operation under varying conditions, reducing wear and improving overall performance.
Implementation Method 1
a hydraulic fluid supply system that supplies hydraulic fluid to a piston in a gas compressor
Implementation Method 2
a compression chamber that is adapted for holding a gas therein and a piston that is movable within the compression chamber between a first position and a second position for compressing the gas
Data Source
AI summary
Methods and systems are provided to adaptively control a hydraulic fluid supply to supply a driving fluid for applying a driving force on a piston in a gas compressor, the driving force being cyclically reversed between a first direction and a second direction to cause the piston to reciprocate in strokes. During a first stroke of the piston, a speed of the piston, a temperature of the driving fluid, and a load pressure applied to the piston is monitored. Reversal of the driving force after the first stroke is controlled based on the speed, load pressure, and temperature.