Cable Gland Assembly with Segmented Packing Rings
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Solution Overview
Problem
Conventional cable and flexible conduit gland assemblies provide insufficient protection against external forces, water leakage, and lack high IP ratings for dynamic mechanical, outdoor, and deep-water applications, as they often rely on single packing layers and insufficient tensile strength.
Innovation Solution
A cable and flexible conduit gland assembly with multiple connection members and packing devices, including an auxiliary clamping sleeve, provides enhanced protection through multiple packing layers, increased tensile strength, and high IP ratings by compressing packing sleeves and auxiliary clamping sleeves around the cable and flexible conduit to ensure airtight, waterproof, and dustproof seals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single packing ring is used to wrap the cable, then the structure is simple, but the protection against water leakage and external forces is insufficient
Solution Approach 1:
The single packing ring is divided into multiple independent packing rings (first packing ring and second packing ring) that are sequentially compressed onto the cable. Each packing ring provides an independent sealing layer, ensuring that if one layer is compromised, other layers remain intact to prevent water leakage and maintain protection.
2Device complexity
If a single packing member with packing segments is used, then the device complexity is reduced, but the anti-tensile strength and sealing reliability are insufficient when cable is stretched
Solution Approach 1:
The single packing member is segmented into multiple independent packing rings, each capable of independently compressing and sealing the cable. This segmentation allows each ring to maintain its packing function even when the cable is stretched, preventing the entire sealing system from failing and maintaining anti-tensile strength.
Solution Approach 2:
Multiple packing rings are pre-installed in sequence before the cable is subjected to external forces or stretching. This beforehand cushioning ensures that the cable is already protected by multiple sealing layers, so when stretching occurs, the pre-positioned packing rings continue to provide sealing protection rather than being destroyed.
3Ease of operation
If conventional cable glands are used, then the installation is simple, but the IP rating is insufficient for dynamic mechanical, outdoor, and deep-water applications
Solution Approach 1:
The cable gland is designed with multiple independent packing rings instead of a single packing element. This segmentation creates multiple sealing zones along the cable entry point, significantly enhancing the IP rating by providing redundant sealing layers that can withstand dynamic mechanical stresses, outdoor conditions, and deep-water environments while maintaining installation simplicity.
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
The enhanced design effectively prevents water leakage and disconnection under external forces, achieving high IP ratings suitable for dynamic mechanical, outdoor, and deep-water environments, ensuring reliable protection and multiple packing effects.
Implementation Method 1
a packing device, and an auxiliary clamping sleeve. The connection member and packing device are set between the mounting member and the outer cap to compress the packing sleeve and clamping member around the cable
Implementation Method 2
The auxiliary clamping sleeve is set between the connection member and the outer cap to compress the auxiliary clamping sleeve around the flexible conduit
Data Source
AI summary
A cable and flexible conduit gland assembly includes a mounting member mounted in a predetermined object, one or multiple connection members, an outer cap, and one packing device and one or multiple auxiliary clamping sleeves mounted in the mounting member between the connection members and the outer cap and compressible by the outer cap and the connection members to wrap about the periphery of an inserted cable and to provide multiple packing effects. Thus, the cable and flexible conduit gland assembly has high IP rating, and is practical for dynamic mechanical application, or application in a deep-water environment or high explosive atmosphere.