Supply Cable Conduit for Airtight Drive Module Pressure Equalization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electromagnetic transport systems face challenges in pressure equalization between airtightly closed drive modules and their environment, leading to potential mechanical damage and reduced service life due to pressure fluctuations, which are often addressed with additional and costly pressure compensation elements that require maintenance and can be contaminated.
Innovation Solution
Integrating an empty tube within the supply cable and power cable to facilitate air exchange between the drive modules' airtight housings and the environment, allowing for pressure equalization without additional assembly or maintenance measures, thereby reducing contamination risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure equalization elements are added to compensate for pressure fluctuations in airtight drive modules, then the reliability of the drive modules is improved, but the device complexity and cost increase
Solution Approach 1:
The pressure equalization function is merged with the existing supply cable by integrating a conduit into the cable structure. This combines the electrical power supply function and the pressure equalization function into a single integrated component, eliminating the need for separate pressure equalization elements and reducing device complexity while maintaining reliability
Solution Approach 2:
The supply cable is given multiple functions: it serves both as an electrical power supply conduit and as a pressure equalization channel through its integrated conduit. This multi-functionality approach allows the same component to address both power delivery and pressure compensation needs, reducing overall system complexity
2Reliability
If additional pressure compensation elements are installed, then the protection against pressure fluctuations is improved, but the ease of operation and maintenance deteriorate due to required assembly and maintenance measures
Solution Approach 1:
The pressure equalization capability is merged into the supply cable structure itself. The conduit is integrated during cable manufacturing, eliminating separate assembly steps for installing pressure equalization elements and simplifying both initial assembly and ongoing maintenance operations
Solution Approach 2:
The integrated conduit provides automatic pressure equalization without requiring active control or maintenance. The system self-regulates pressure fluctuations passively through the conduit's inherent design, eliminating the need for powered actuators, sensors, or regular maintenance interventions
3Reliability
If traditional pressure equalization elements are used, then pressure compensation is achieved, but contamination risks increase due to additional components exposed to the environment
Solution Approach 1:
The conduit integrated into the supply cable acts as an intermediary channel for pressure equalization. It provides a controlled pathway that mediates between the internal drive module environment and the external pressure conditions, allowing pressure compensation while maintaining environmental protection through the cable's existing shielding and sealing
Solution Approach 2:
The supply cable's conduit serves dual purposes: electrical power transmission and protected pressure equalization. This multi-functionality leverages the cable's inherent protective features (shielding, sealing) to simultaneously protect both electrical components and the pressure equalization process from environmental contamination
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 cost-effective and maintenance-free pressure equalization, protecting the drive modules from contamination and mechanical stress, enhancing the reliability and longevity of the transport system.
Implementation Method 1
an exchange of a medium, in particular an air exchange, between an interior formed by the airtight housing of the at least one drive module and the environment of the transport system takes place only via the conduit
Implementation Method 2
a driving force is generated—as with the long-stator linear motor—by the interaction of a magnetic excitation field, generated, for example, by the drive magnets of the transport unit, with a magnetic field of the stator or at least one drive module
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to an electromagnetic transport system (1) with a stator (2) and at least one transport unit (3) movably arranged along the stator (2). The stator (2) has at least one drive module (4) with an airtight housing (6) in which a plurality of drive coils (5) are arranged. A supply cable (8) is also provided, which connects the stator (2) or the at least one drive module (4) to a supply voltage (V) for energizing the drive coils (5). A conduit (11) is integrated into the supply cable (8) and is arranged within an outer sheath (13) of the supply cable (8). The conduit (11) is provided with an opening at a supply-side end (9) of the supply cable (8).A drive module end (10) of the supply cable (8) is connected to the at least one drive module (4) in such a way that an exchange of a medium, in particular an air exchange, between an interior formed by the airtight housing (6) of the at least one drive module (4) and an environment (12) in the area of the supply voltage (V), such as a control cabinet, only takes place via the conduit (11).