Turbo Chiller Leak Detection Layout With Fewer Sensors
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Solution Overview
Problem
Turbo chillers require a large number of expensive refrigerant leakage detection sensors to accurately detect refrigerant leaks, which is not economically rational and often results in significant refrigerant emission before detection.
Innovation Solution
A turbo chiller design with intensively placed pipe joint groups and refrigerant detection sensors positioned below to detect slight refrigerant leaks that flow downward, minimizing the number of sensors needed and enhancing early detection capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large number of refrigerant leakage detection sensors are set below the compressor, condenser, evaporator, and other components, then the detection accuracy of refrigerant leakage is improved, but the device complexity and cost increase significantly
Solution Approach 1:
The invention segments the detection task by focusing sensors only on pipe joint groups, which are identified as the primary leakage sources. Instead of placing sensors throughout the entire refrigeration system, the patent divides the monitoring focus to specific high-risk areas where multiple pipe joints converge, thereby reducing the total number of sensors needed while maintaining effective detection coverage
Solution Approach 2:
The invention applies local quality by concentrating detection resources at the pipe joint groups where refrigerant leakage is most likely to occur. The sensor placement is optimized for specific local conditions - positioned below the intensive placement region to detect refrigerant that flows downward due to gravity. This localized approach ensures high detection accuracy at critical points without requiring comprehensive sensor coverage throughout the entire system
2Reliability
If a large number of expensive refrigerant leakage detection sensors are set throughout the system, then the detection coverage is improved, but the economic rationality deteriorates
Solution Approach 1:
The invention applies partial action by implementing detection coverage that is sufficient for the critical leakage points without being excessive. By identifying pipe joint groups as the primary leakage sources and placing sensors specifically at these locations, the system achieves adequate detection coverage for the most problematic areas while avoiding the unnecessary cost of comprehensive sensor placement throughout the entire refrigeration system
Solution Approach 2:
The invention uses a simplified detection approach that copies the essential function of comprehensive sensor placement - detecting refrigerant leakage - but implements it only where most needed. Rather than installing sensors at every potential leakage point, the patent creates an effective detection system by placing sensors at the pipe joint groups, which represent the critical copying of the leakage detection function concentrated at high-risk locations
3Device complexity
If refrigerant leakage is detected only when it reaches a high concentration, then the simplicity of the detection system is maintained, but the loss of refrigerant increases significantly
Solution Approach 1:
The invention applies preliminary action by positioning sensors to detect refrigerant leakage at its earliest stage, before it disperses throughout the machine room. The sensors are placed below the pipe joint groups in the intensive placement region, where refrigerant that leaks from the joints flows downward and accumulates. This preliminary detection position allows the system to identify leakage immediately when it occurs at the source, enabling early intervention before significant refrigerant loss occurs
Solution Approach 2:
The invention uses the pipe joint groups and the space below them as an intermediary mechanism to concentrate and channel leaking refrigerant to the sensor location. The gravity-driven downward flow of refrigerant acts as a natural intermediary that delivers the leaked refrigerant directly to the detection zone below the pipe joints, amplifying the concentration at the sensor location and enabling detection of even small leakage amounts without requiring complex sensor arrays
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
Early detection of refrigerant leaks prevents large-scale emissions and reduces refilling needs, while minimizing sensor installation costs through focused sensor placement.
Implementation Method 1
The refrigerant normally used for the turbo chiller has a higher specific gravity than that of air, and hence the refrigerant that leaks from a pipe joint or the like flows vertically downward from its leakage site
Data Source
AI summary
In a turbo chiller, pipe joint groups (23 to 26) provided to refrigerant cooling pipe systems (13 to 16) and lubricant pipe systems connected to a turbo compressor (2) and a motor (3), as well as a joint group (28) of various replacement components (27) provided to the pipe systems, are intensively placed, and at least one refrigerant detection sensor (32) is arranged below the intensive placement region (30) of the joint groups (23 to 28) and at a pre-identified point at which a slight amount of refrigerant that leaks from each of the joint groups (23 to 28) and flows downward is distributed and pools at a high concentration, whereby the slight amount of refrigerant leakage can be detected by the refrigerant detection sensor (32).