High-Pressure Fluid Mixing Pump Control System
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Solution Overview
Problem
Existing high-pressure fluid mixing pump control systems are complex, leading to low precision and reliability issues due to the need for compound commands and hydraulic systems that are susceptible to external interference, resulting in errors around 10% in formation fluid measurement.
Innovation Solution
A high-pressure fluid mixing pump control system utilizing a transmission threaded rod connected to a resolver sensor, which converts linear piston motion to rotary motion for precise measurement, combined with an accelerator and electric brake for control, simplifying the structure and enhancing precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a displacement sensor and complex hydraulic control system are used to control fluid suction volume, then measurement capability is provided, but device complexity increases and reliability decreases
Solution Approach 1:
The invention extracts and removes the complex hydraulic control system and displacement sensor from the pump structure, retaining only the essential piston-cylinder mechanism for fluid suction. This simplification eliminates the need for complex control loops while maintaining measurement capability through direct geometric relationships.
Solution Approach 2:
The invention replaces the electronic displacement sensor and hydraulic control system with a purely mechanical measurement approach. The piston displacement is measured directly through mechanical linkages and geometric relationships, substituting electronic sensing with mechanical indication methods.
2Adaptability or versatility
If multiple compound commands and sensors are used in the control system, then control functionality is enhanced, but operation complexity increases and control precision decreases due to data transmission delay
Solution Approach 1:
The simplified pump structure performs its own measurement function through inherent geometric relationships between piston displacement and fluid volume. The system is self-measuring, eliminating the need for external sensors and complex control commands, thereby reducing operational complexity while maintaining functionality.
3Reliability
If a hydraulic control system is used, then fluid suction control is achieved, but reliability decreases due to susceptibility to external interference and environmental factors
Solution Approach 1:
The invention extracts and removes the hydraulic control system from the pump structure, eliminating the source of reliability problems. By removing hydraulic components that are susceptible to contamination and external interference, the system achieves inherent reliability through its simplified mechanical design.
Solution Approach 2:
The invention replaces complex, fragile hydraulic and electronic components with simple, robust mechanical elements that are inherently more reliable. The simplified structure uses durable mechanical parts that are less susceptible to environmental degradation and external interference.
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 achieves high precision and stability in fluid suction control with a simplified mechanical design, reducing external influence and improving reliability by using a resolver sensor for precise rotation angle measurement and an electric brake for pump control.
Implementation Method 1
one end of said transmission threaded rod is connected to an oil cylinder piston of a mixing pump, while the other end of said transmission threaded rod is connected to said resolver sensor
Implementation Method 2
said resolver sensor metering the number of revolutions of said transmission threaded rod or said rotary element; obtaining a linear displacement amount of said piston on the basis of said number of revolutions
Data Source
AI summary
A high-pressure fluid mixing pump control system and a fluid suction control method, the system comprises a transmission threaded rod and a resolver sensor, wherein: one end of the transmission threaded rod is connected to an oil cylinder piston of a mixing pump, while the other end of the transmission threaded rod is connected to the resolver sensor either directly or via a rotary element that rotates coaxially with the transmission threaded rod. The high-pressure fluid mixing pump control system implements precision control via a mechanical means, converts a linear motion of the piston into a rotary motion, and utilizes the resolver sensor for precision measurement of a rotation angle, thus acquiring a piston displacement amount, and finally acquiring a suction volume. At the same time, an accelerator and an electric brake are also designed, for controlling starting and stopping of the mixing pump.