Hydraulic Connector Failure Detection Using Air Pressure Thresholds
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Solution Overview
Problem
Conventional methods for detecting connector failures in hydraulic systems, such as using shop air to test connection seating, are inadequate, leading to poor sensing and detection capabilities, resulting in oil leakages and system failures.
Innovation Solution
A system and method that involves supplying air at a first pressure and hydraulic fluid at a second pressure less than the first into a hydraulic fluid line, with a protection device that inhibits fluid flow when a pressure differential exceeds a threshold, and an electronic control unit that generates alerts for operator intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional shop air testing is used to detect connector failures, then the detection method is simple, but the sensing and detection capabilities are poor leading to oil leakages and system failures
Solution Approach 1:
The system segments the detection process into two distinct phases: a testing phase using compressed air at high pressure to detect connector failures, and an operating phase using hydraulic fluid at normal pressure for actual work. This segmentation allows each phase to use optimized pressure levels appropriate to its function, improving detection capability while maintaining system manageability.
Solution Approach 2:
The system performs preliminary detection using compressed air before introducing hydraulic fluid into the system. The air testing phase occurs first to identify any connector failures or leaks before the actual hydraulic operation begins, preventing oil leakages and system failures by catching issues in advance.
2Measurement precision
If high pressure air is used for testing connector connections, then detection sensitivity is improved, but risk of system damage increases
Solution Approach 1:
The system separates the high-pressure testing function from the normal-pressure operating function by using different fluids for each phase. Compressed air at high pressure is used only during the testing phase to detect connector failures, while hydraulic fluid at normal operating pressure is used during the operating phase, eliminating the risk of system damage from high pressure during normal operation.
Solution Approach 2:
The system uses compressed air as a temporary, disposable testing medium that is introduced only for the detection phase and then purged from the system before hydraulic operation begins. The air serves its detection purpose and is then discarded, preventing any potential damage from high-pressure air during normal hydraulic operation.
3Reliability
If pressure threshold monitoring is implemented, then connector failure detection is improved, but device complexity increases
Solution Approach 1:
The system implements feedback through pressure transducers that continuously monitor pressure in the hydraulic line and provide real-time data to the electronic control unit. When pressure exceeds the predetermined threshold indicating a connector failure, the system provides feedback by activating an alarm and shutting down the hydraulic pump, enabling timely detection and response to failures.
Solution Approach 2:
The monitoring system is designed to automatically detect and respond to connector failures without requiring constant operator intervention. The electronic control unit automatically processes pressure data, determines when thresholds are exceeded, activates alarms, and shuts down the pump, making the system self-monitoring and self-protecting.
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 approach effectively reduces oil leakage and system failures by accurately detecting connector failures and preventing further fluid flow in case of pressure differentials, ensuring reliable hydraulic system operation.
Implementation Method 1
A protection device is coupled to the hydraulic fluid line and is configured to inhibit flow of the hydraulic fluid supplied by the second supply source when a pressure differential across an inlet of the protection device exceeds a predetermined threshold
Data Source
AI summary
A system for detecting a connector failure associated with an agricultural apparatus is disclosed. The system comprises a first supply source that is configured to supply a quantity of air at a first pressure into the hydraulic fluid line arranged on the agricultural apparatus. A second supply source is configured to supply a quantity hydraulic fluid to the hydraulic fluid line at a second pressure that is less than the first pressure. A protection device is coupled to the hydraulic fluid line and is configured to inhibit flow of the hydraulic fluid supplied by the second supply source when a pressure differential across an inlet of the protection device exceeds a predetermined threshold.