Device for a refrigeration system
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Solution Overview
Problem
Large or complex refrigeration systems require multiple relief lines, leading to high material and space requirements, and pressure surges in one discharge line can damage closed safety valves in others, especially with long blow-off lines.
Innovation Solution
The end sections of relief lines open into a collector pipe with a larger cross-section, acting as a diffuser to dissipate kinetic energy and reduce pressure surges, with uniform spacing and angled outlets to enhance fluid expansion and distribution, ensuring compact design and easy connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate relief lines are provided for each pressure section, then operational safety is ensured, but material and space requirements increase
Solution Approach 1:
Multiple separate relief lines are merged into a common collector pipe that receives discharges from all relief lines. This consolidation reduces the total quantity of piping material required while maintaining the safety function of individual relief lines, directly resolving the contradiction between operational safety and material requirements
2Quantity of substance
If multiple discharge lines are combined into a common discharge line, then material and space requirements are reduced, but pressure surges can damage closed safety valves
Solution Approach 1:
A collector pipe is introduced as an intermediary component between individual relief lines and the common discharge line. This collector pipe serves as a buffer zone that dissipates pressure surges through its larger cross-sectional area and transverse geometry, protecting closed safety valves from damage while enabling material consolidation
Solution Approach 2:
The collector pipe is designed with a larger cross-sectional area than individual relief lines, changing the flow parameters (reducing flow velocity and pressure surge intensity) before discharge. This parameter change allows multiple lines to be combined without compromising safety valve protection
3Adaptability or versatility
If discharge lines are made long to reach common discharge points, then system flexibility is improved, but pressure surges increase and material requirements rise
Solution Approach 1:
The collector pipe acts as an intermediary that intercepts high-velocity discharge from relief lines before it can travel long distances. By providing a local collection point with expanded cross-section, it dissipates pressure surges early in the discharge path, reducing the pressure stress that would otherwise propagate through long discharge lines
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 reduces material and space requirements while preventing damage to safety valves by dissipating kinetic energy and maintaining operational safety, adhering to safety standards like EN13136-6.2.1-2013, allowing for efficient and safe discharge of cooling fluid.
Implementation Method 1
the end sections of the relief lines spaced apart from the safety valves open into a collector pipe running transversely to the end sections, the flow cross section of which exceeds the flow cross section of each end section. Due to the higher flow cross-section of the collector tube compared to the discharge lines, the cooling fluid is expanded when it enters the collector tube.
Implementation Method 2
Together with the pressure loss when entering the collector tube, this leads to a dissipation of the kinetic energy of the fluid, which prevents damage to the closed safety valves of the other relief lines due to pressure surges.
Data Source
Figure 1
AI summary
A device for a refrigeration system with several discharge lines (1), each comprising at least one safety valve (2), is described. To design a device of the type described above in such a way that cooling fluid can be discharged from several discharge lines with reduced material and space requirements without compromising operational safety, it is proposed that the end sections (3) of the discharge lines (1), spaced apart from the safety valves (2), open into a collector pipe (4) running transversely to the end sections (3), the flow cross-section of which exceeds the flow cross-section of each end section (3).