Hydraulic Fluid Contamination Sensor Flow Control
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Solution Overview
Problem
Current hydraulic and lubricating fluid contamination sensor systems face challenges in maintaining consistent fluid flow, leading to inaccurate particle contamination measurements and difficulty in interpreting results, especially for maintenance personnel unfamiliar with the output nuances.
Innovation Solution
The implementation of a method and apparatus that utilizes a variable speed pump and contamination monitor to maintain a consistent fluid flow through the sensor, coupled with a display system that presents particle information in an easily understandable format, including graphical and tabular data, and remote monitoring capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a contamination sensor is installed to monitor particle contamination in real-time, then the time delay between fluid withdrawal and testing is eliminated, but the system requires maintenance of constant fluid flow through the sensor which increases device complexity
Solution Approach 1:
The patent combines the contamination sensor with the existing hydraulic system's fluid flow path, integrating monitoring functionality into the operational circuit rather than requiring separate sampling and laboratory analysis systems. This merging eliminates time delays while avoiding proportionally increasing overall system complexity.
Solution Approach 2:
The system uses the hydraulic system's own operating fluid flow to pass through the contamination sensor, eliminating the need for separate sampling pumps or external testing equipment. The hydraulic system serves its own monitoring needs, reducing additional device complexity.
2Measurement precision
If fluid flow through the contamination sensor is not maintained constant, then device complexity is reduced, but the particle information provided by the sensor becomes inaccurate
Solution Approach 1:
The patent implements a feedback control system where the contamination sensor provides particle information that is used to adjust and maintain constant fluid flow through the sensor. This feedback loop ensures measurement accuracy while automating the flow control process.
Solution Approach 2:
The system dynamically adjusts fluid flow conditions to maintain constancy despite variations in system operation. The flow control mechanism adapts in real-time to ensure the sensor operates under optimal conditions for accurate particle measurement.
3Measurement precision
If contamination sensor output is presented in standard formats, then measurement precision is maintained, but maintenance personnel find it difficult to interpret results quickly and accurately
Solution Approach 1:
The patent employs color-coded indicators or visual displays that translate standard contamination levels into intuitive color representations (e.g., green for acceptable, yellow for caution, red for critical). This maintains measurement precision while dramatically improving ease of interpretation for maintenance personnel.
Solution Approach 2:
Instead of requiring personnel to interpret standard technical formats, the system inverts the approach by translating complex data into simple, intuitive visual indicators. The output is transformed from something requiring expert interpretation to something immediately understandable by all personnel.
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 solution ensures accurate and timely contamination monitoring, enabling prompt alerts and simplifying data interpretation for maintenance personnel, thereby improving system reliability and efficiency.
Implementation Method 1
The controller receives a flow rate signal from the flow sensor and controls the variable speed pump to maintain the fluid flow rate through the contamination sensor within a predetermined range
Implementation Method 2
a flow sensor that produces a flow rate signal representative of the fluid flow rate through the contamination sensor
Implementation Method 3
An example of a contamination sensor is the Hydac International CS 1000 Series Contamination Sensor... measure solid particle contamination, usually optically
Data Source
AI summary
A method and apparatus for maintaining the rate of flow of hydraulic or lubricating fluid through a particle contamination sensor or monitor at an acceptable level is disclosed. The rate of flow may be a specific value or lie within a desired range of values. Regardless, maintaining the rate of flow at an acceptable level improves the accuracy of information produced by the contamination sensor or monitor. A display for displaying the particle information created by a particle contamination sensor or monitor in a manner more easily understood by maintenance personnel and a method of creating such a display is also disclosed.