Integrated Cable-Laying Housing to Contain Lubricant Leaks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cable-laying systems experience lubricant leaks and are complex to install due to multiple units, complicating the introduction of cables into ducts.
Innovation Solution
A device with a pressure housing containing distinct chambers for lubricant and driving fluid, where the lubricant chamber is upstream, ensuring no external leaks and simplifying installation by integrating all components into a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate units are used for lubrication and driving fluid delivery, then lubrication function is provided, but device complexity increases and installation becomes complicated
Solution Approach 1:
The patent combines multiple separate units (lubrication unit and driving fluid delivery unit) into a single integrated device. The housing contains both the lubricant chamber and driving fluid chamber, with the elongated element passing through both chambers sequentially. This merging eliminates the need for multiple separate installations while maintaining both lubrication and driving fluid delivery functions, directly resolving the contradiction between reliability and device complexity.
2Ease of operation
If lubricant is delivered separately before cable introduction, then lubrication is provided, but the system experiences lubricant leaks
Solution Approach 1:
The elongated element itself serves as an intermediary carrier that transports lubricant from the lubricant chamber through the driving fluid chamber to the duct. The lubricant is applied to the elongated element within the sealed housing, and the element carries this lubricant forward during its passage. This intermediary approach ensures lubricant is delivered precisely where needed without leaking into the environment, as the lubricant remains contained on or within the elongated element throughout the process.
Solution Approach 2:
The lubricant chamber is positioned upstream within the housing, and the elongated element passes through both the lubricant chamber and the downstream driving fluid chamber in sequence. This nested arrangement allows the lubricant to be introduced into the system first, then the elongated element carries it forward through the driving fluid chamber to the duct. The nested structure ensures lubricant remains contained within the housing boundaries, preventing leaks while maintaining operational efficiency.
3Quantity of substance
If lubricant chamber is positioned downstream, then driving fluid can flow freely, but lubricant may leak outside the housing
Solution Approach 1:
Instead of placing the lubricant chamber downstream after the driving fluid chamber, the patent inverts the sequence by positioning the lubricant chamber upstream before the driving fluid chamber. The elongated element passes through the lubricant chamber first, picking up lubricant, then proceeds through the driving fluid chamber to the duct. This inverted arrangement ensures that any lubricant that might escape does so into the driving fluid chamber where it can be contained or diluted, rather than leaking directly outside the housing. The driving fluid flow is maintained freely in the downstream chamber while lubricant is securely positioned upstream.
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 ensures reliable operation with minimal lubricant leaks and easy installation by maintaining lubricant within the housing, enhancing cable introduction efficiency.
Implementation Method 1
a lubricant chamber, arranged to receive a lubricant and to distribute the lubricant onto an outer surface of the elongated element
Implementation Method 2
a driving fluid chamber, arranged to receive the driving fluid supplied under pressure and to distribute the driving fluid into the duct with the elongated element
Data Source
AI summary
A Device for installing an elongated element into a duct, comprising a pressure housing having an entry port, an exit port arranged to be connected to the duct for introducing the elongated element into the duct with a driving fluid, a driving fluid chamber, arranged to receive the driving fluid supplied under pressure and to distribute the driving fluid into the duct with the elongated element, and a lubricant chamber, arranged to receive a lubricant and to distribute the lubricant onto an outer surface of the elongated element, the lubricant chamber being located upstream of the driving fluid chamber, characterized in that the pressure housing comprises an upstream chamber, arranged to receive the pressurized driving fluid and located upstream of the lubricant chamber.