Cable Connection Sleeve Sealing with Dynamic Spring Compensation
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Solution Overview
Problem
Existing cable connecting sleeve devices are not suitable for reliable sealing at extreme temperature ranges (-60°C to 200°C) due to the aging of silicone sealants and loss of elasticity, leading to issues with tightness and longevity.
Innovation Solution
A cable connecting sleeve device with a clamping unit featuring a continuous stepped recess, longitudinally displaceable pressure piece, and compression springs that maintain constant pressure on sealing ring units, ensuring reliable sealing across a wide temperature range through the use of helical compression springs and Teflon locking ring units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If silicone sealants are used in conventional cable connecting sleeves, then the sealing function is provided at normal temperatures, but the sealant ages and loses elasticity at high temperatures above 200°C, compromising tightness
Solution Approach 1:
The patent changes the material parameter of the sealant from conventional silicone to a high-temperature resistant material that maintains its sealing properties at temperatures up to 200°C and above, directly resolving the temperature limitation of conventional sealants
Solution Approach 2:
The patent introduces a dynamic compensation mechanism using elastic means (springs) that automatically adjust to maintain constant sealing pressure on the sealant, compensating for thermal expansion and contraction across the temperature range from -60°C to 200°C
2Reliability
If silicone sealants are used in cable connecting sleeves, then sealing is achieved at normal conditions, but the sealant becomes softer and loses elasticity in the absence of air or at high temperatures, leading to aging problems
Solution Approach 1:
The patent changes the chemical composition parameter of the sealant material to be resistant to aging and oxidation, selecting materials that do not deteriorate in the absence of air or at elevated temperatures, thereby extending service life
Solution Approach 2:
The patent employs dynamic elastic compensation through springs that maintain constant sealing pressure, compensating for any gradual material degradation over time and ensuring long-term sealing reliability
3Reliability
If conventional sealing structures are used, then assembly is simple, but the sealing pressure is not maintained under temperature fluctuations, compromising tightness
Solution Approach 1:
The patent introduces dynamic elastic compensation mechanisms using compression springs that automatically adjust sealing pressure in response to temperature-induced dimensional changes, maintaining reliable sealing across the -60°C to 200°C range
Solution Approach 2:
The patent segments the sealing system into distinct functional components: the sealant material, the pressure application mechanism (springs), and the structural elements (sleeve, pressure piece), allowing each to be optimized independently while working together
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 device provides a permanently reliable sealing function across a broad temperature range, preventing deformation and maintaining tightness by ensuring the sealing ring units remain under constant pressure, thus compensating for temperature-induced changes in sealing properties.
Implementation Method 1
the sealing ring units are permanently under the pressing effect of pressure springs when the pressure nut is connected to the base body
Data Source
Figure 1~3
Figure 4~6
AI summary
The device (10) has a base body (26) with a continuous base body recess (25), where a clamping nut (30) is attached in end regions of the base body. Sealing agents (34, 36) protects a connection region of cables against outer influences. The sealing agents stand on the clamping nut permanently under pressing effect of resilient units (40, 42) i.e. helical compression springs. A longitudinally displaceable thrust piece (48) is arranged within each of the clamping nut and has a continuous recess for the cables.