Safety Valve Assembly With Pressurized Zone for Milk Line Leak Detection
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Solution Overview
Problem
Dairy system safety valves require reduced maintenance, are compact, and can be readily monitored for leakage, as existing valves are prone to seal deterioration and leakage issues due to exposure to teat dips, and monitoring of block-bleed-block valve configurations is challenging.
Innovation Solution
A safety valve assembly with a pressurized zone between two closed valves, incorporating a pressure monitor to detect leaks and generate signals for timely maintenance, ensuring one-directional flow and preventing contamination, featuring a block-monitor-block configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If block-bleed-block valve configuration is used to protect milk lines from contamination, then safety is improved, but monitoring for leakage becomes difficult
Solution Approach 1:
A pressurized monitoring zone is introduced as an intermediary between the two block valves. This monitoring zone contains a pressure sensor that detects pressure changes indicating valve leakage. The monitoring zone acts as a mediator that translates internal valve seal conditions into detectable pressure signals, solving the monitoring difficulty while maintaining the protective function of the block-bleed-block configuration.
2Reliability
If automated teat dip applicators are used to protect teats from infection, then effectiveness is improved, but risk of milk line contamination increases
Solution Approach 1:
The harmful teat dip fluid is extracted from the milk line system by routing it through a separate path that includes safety valves. The teat dip applicator system is isolated from the milk handling system, allowing effective teat treatment while preventing dip fluid from entering the milk lines. The safety valves provide an additional extraction barrier to ensure complete separation.
Solution Approach 2:
The fluid handling system is segmented into separate zones: a teat dip zone with its own valves and pathways, and a milk zone with separate valves and pathways. This segmentation prevents cross-contamination by ensuring that teat dip fluids and milk never mix, allowing both functions to operate effectively independently.
3Reliability
If safety valves are exposed to teat dips to protect milk lines, then protection function is improved, but seal deterioration increases
Solution Approach 1:
A monitoring zone with a pressure sensor serves as an intermediary that allows the safety valves to maintain their protective function while enabling detection of seal deterioration. The pressure monitoring system provides early warning of seal issues, allowing maintenance before complete failure, thereby extending the effective service life of the valve seals.
Solution Approach 2:
A pressure sensor in the monitoring zone provides feedback about the condition of the safety valve seals. When pressure changes indicate seal deterioration or leakage, the system can trigger alerts or automatic responses. This feedback mechanism enables proactive maintenance, extending the operational lifespan of the valve seals by detecting issues before they cause complete valve failure.
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 solution reduces maintenance needs, enhances safety by actively monitoring for leaks, and ensures effective protection of milk lines from contamination, improving the reliability and efficiency of dairy system operations.
Implementation Method 1
a pressurized fluid source in fluid communication with the flow path when the first valve is closed and the second valve is closed; and a pressure monitor in communication with the flow path to determine fluid pressure in the flow path
Data Source
AI summary
A safety valve arrangement and method, having an upstream block valve, a downstream block valve, and a pressure monitored galley between the upstream valve and the downstream valve.