Cable Line Entry Latching Guide for Explosion Hazard Sealing
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Solution Overview
Problem
Existing cable/line entries fail to provide adequate protection in hazardous environments, such as areas at risk of explosion, and do not maintain the required degree of protection over time, especially in conditions involving temperature ranges, corrosive media, and moisture.
Innovation Solution
The cable/line entry is designed with guiding and/or positioning means that latch on opposite separating edges of individual elements, ensuring a secure connection and sealing, including the use of sealing rings, pressure rings, and clamping lamellae, which can be assembled without interrupting the electrical supply, and are secured with a lock nut, meeting IPx5 or IPx6 protection standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the cable/line entry is assembled from multiple individual elements with separating edges, then it enables replacement without detaching cables or lines, but it compromises the degree of protection and sealing in hazardous environments
Solution Approach 1:
The cable/line entry is divided into multiple individual elements (insertion sleeve and clamping part) that can be assembled separately on the cable or line. This segmentation enables replacement of the cable/line entry without detaching the cable or line from the electrical device, directly improving ease of repair while maintaining the required degree of protection through precise guiding and positioning means.
Solution Approach 2:
Guiding and/or positioning means are introduced as intermediary elements between the individual components (insertion sleeve and clamping part). These intermediaries ensure precise alignment and connection of the segmented elements, maintaining the required degree of protection and sealing in hazardous environments while enabling the benefits of modular assembly for ease of repair.
2Manufacturing precision
If guiding and/or positioning means are added to ensure precise assembly of individual elements, then assembly precision is improved, but device complexity increases
Solution Approach 1:
The guiding and/or positioning means are segmented into discrete elements that can be integrated with the individual components (insertion sleeve and clamping part). This segmentation allows for precise assembly guidance without creating a monolithic complex structure, as each guiding element can be independently manufactured and assembled.
Solution Approach 2:
The guiding and/or positioning means are designed to serve multiple functions: guiding the assembly of individual elements, positioning them precisely, and contributing to the overall sealing and degree of protection. This multi-functionality reduces the need for separate dedicated components, thereby limiting the increase in device complexity while achieving high assembly precision.
3Reliability
If sealing elements are added to maintain protection level in hazardous environments, then degree of protection is improved, but device complexity increases
Solution Approach 1:
Sealing elements are merged with the individual components (insertion sleeve and clamping part) rather than being separate add-on elements. This integration maintains the required degree of protection in hazardous environments while avoiding the complexity increase that would result from separate sealing components, as the sealing function is combined with the structural elements.
Solution Approach 2:
The sealing elements are designed to serve multiple functions: providing the required degree of protection, contributing to the overall sealing, and integrating with the guiding and positioning functions. This multi-functionality allows a single integrated design to achieve protection requirements without proportionally increasing device complexity.
Data Source
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AI summary
A cable/line lead-in has at least one insertion sleeve or one intermediate connector that has a bearing flange which, at least at certain locations, projects radially outward. Furthermore, the cable/line lead-in has a clamping part that can be releasably installed on a connection section of the insertion sleeve, in the direction of the bearing flange, wherein the insertion sleeve and the clamping parts can be assembled from at least two individual elements divided essentially in the axial direction, and guiding and/or positioning means are arranged along corresponding separation edges of the individual elements for the purpose of assembling same with the correct positioning. In order to improve a cable/line lead-in of this type such that it creates a corresponding degree of protection and permits a reliable and secure connection of the corresponding individual elements, in particular with regard to the degree of protection, the guiding and/or positioning means are formed on opposite separation edges as guiding and/or positioning means that latch together, and the cable/line lead-in can be used in areas at risk of explosion.