Rod Section Insulating Sleeve for HDD Electrical Connection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rod section systems for earth boring, particularly in HDD methods, face challenges in establishing a reliable and insulated electrical connection between conductors due to conductive connections through drilling fluid, leading to potential short circuits and limited service life of probes.
Innovation Solution
A rod section system with a centrally arranged conductor that uses an insulating sleeve for forced guidance and sealing, allowing for a translatory movement and rotation, ensuring an automatic insulation of the connection region when rod sections are joined, and incorporating a pressure relief valve to manage excess pressure and maintain electrical insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If cables are connected to produce a conductive connection between rod sections, then higher voltages can be applied to prolong service life, but the risk of short circuits increases due to conductive connection through drilling fluid
Solution Approach 1:
An insulating sleeve is introduced as an intermediary element between the conductor segments and the drilling fluid. This sleeve acts as a mediator that prevents direct electrical contact between the conductor and the conductive drilling fluid, thereby eliminating the short circuit risk while allowing the conductive connection through the rod sections to remain functional for prolonging probe service life
Solution Approach 2:
The electrical connection system is segmented into distinct functional zones: insulated conductor segments within the rod section and a separate insulating sleeve at the connection interface. This segmentation allows the conductor to maintain its electrical function while the insulating sleeve provides isolation from the drilling fluid, resolving the contradiction between electrical conductivity and insulation reliability
2Ease of operation
If contact elements are pressed against each other to achieve electrical connection, then conductive connection is established, but insulation of contact faces is not provided leading to potential electrical connection issues
Solution Approach 1:
The insulating sleeve is pre-installed on the conductor before the rod sections are connected. This preliminary action ensures that when the contact elements are pressed together to establish electrical connection, the insulation is already in place to prevent short circuits, thereby maintaining both ease of connection and reliability
3Loss of information
If rod sections are connected to transmit signals, then transmission range is increased, but connection region requires manual insulation which causes time delays
Solution Approach 1:
The insulating sleeve is designed to automatically engage and provide insulation when the rod sections are connected through the threading mechanism. This self-service feature eliminates the need for manual insulation operations, allowing the connection region to be insulated automatically as part of the normal connection process, thereby increasing transmission range without causing time delays
Data Source
AI summary
A rod section having an electrical conductor which is arranged such that it is centered at the end and has an insulating sleeve and is fixed in the rod section such that when the rod section is joined to a further rod section having a fixed conductor, both conductors are joined together in a forcibly guided manner and the join is sealed by the sleeve in a forcibly guided manner.