Pneumatic Conveyor Coupling Station With Electrical Connection Verification
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Solution Overview
Problem
Existing coupling stations for pneumatic conveying systems require expensive RFID tags and readers to ensure accurate pipe connections, which are prone to errors due to external influences and precise positioning requirements, making them inefficient and costly.
Innovation Solution
A coupling station where inlet and suction pipes are connected to electrical lines, allowing a control device to apply alternating voltage pulses to verify connections without sensors, utilizing the metal reinforcement in pipes as conductors, and a display device to graphically show connections, ensuring reliable monitoring with minimal effort and independence from external influences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If RFID tags and readers are used to identify pipes and verify connections, then connection accuracy is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent extracts the identification function from complex RFID systems and implements it using simple electrical conductors already present in the pipe walls. By taking out only the essential identification capability and implementing it through basic electrical continuity testing, the system achieves accurate connection verification without the complexity of RFID tags, readers, and associated electronics.
Solution Approach 2:
The pipe walls themselves serve the dual function of structural support and electrical conduction. The metal reinforcement embedded in the pipe walls automatically provides the electrical pathway needed for identification, eliminating the need for separate identification components. The pipes essentially identify themselves through their inherent electrical properties.
2Reliability
If RFID tags and readers are deployed for each pipe pair, then connection monitoring reliability is improved, but manufacturing cost increases
Solution Approach 1:
The patent replaces expensive RFID tags and readers with inexpensive electrical continuity testing. The identification mechanism uses simple electrical signals and basic conductors that are already part of the pipe structure, dramatically reducing component costs while maintaining reliable connection verification through electrical circuit completion detection.
Solution Approach 2:
The metal reinforcement in pipe walls serves multiple functions simultaneously: structural strengthening, electrical conduction for identification, and electromagnetic shielding. This multi-functionality eliminates the need for separate identification components, reducing overall system cost while maintaining reliable connection monitoring.
3Measurement precision
If RFID tags are positioned precisely after coupling, then reading accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The patent removes the positioning requirement entirely by extracting the identification function from active RFID reading and implementing it through passive electrical continuity. The electrical conductor method does not require precise positioning or active reading operations, allowing operators to simply connect pipes without concern for tag alignment or reading accuracy.
Solution Approach 2:
The patent replaces the mechanical positioning and optical/electromagnetic reading system with an electrical continuity system. Instead of requiring precise mechanical alignment of RFID tags and readers, the electrical conductor method uses the natural electrical pathway through the connected pipes, eliminating positioning requirements and simplifying the coupling operation.
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 provides a cost-effective and reliable method to verify pipe connections, reducing errors and operational complexity, while ensuring accurate assignment of pipes and preventing incorrect loading of plastics processing machines.
Implementation Method 1
The conductors of the inlet pipes and the conductors of the suction pipes are alternately subjected to an electrical voltage pulse. The presence of the applied voltage pulse in the electrical conductors of the suction pipes and inlet pipes is checked
Data Source
Figure 1
AI summary
The invention relates to a coupling station (2) for a pneumatic conveying system for bulk materials, comprising an arrangement of inlet pipes (11) with coupling pieces (24) arranged at their ends and an arrangement of suction pipes (31) with counter-coupling pieces (32) arranged at their ends, wherein the coupling pieces (24) of the inlet pipes (11) are connectable to the counter-coupling pieces (32) of different suction pipes (31), wherein at least two inlet pipes (11) and at least two suction pipes (31) are each connected to an electrical line, which is connected to the coupling piece (24) or counter-coupling piece (32) of the associated pipe (1, 31) in such a way that the connection of a coupling piece (24) to a counter-coupling piece (32) results in an electrical connection of the electrical lines connected to the associated pipes (11, 31).A control device is arranged which is connected to the electrical lines of the inlet pipes (11) and the suction pipes (31) and is configured such that the lines of the inlet pipes (11) are alternately supplied with an electrical voltage pulse, whereby the lines of the suction pipes (31) are checked for the passage of the applied voltage pulse.